/*
 * svg-editor.js
 *
 * Licensed under the MIT License
 *
 * Copyright(c) 2010 Alexis Deveria
 * Copyright(c) 2010 Pavol Rusnak
 * Copyright(c) 2010 Jeff Schiller
 * Copyright(c) 2010 Narendra Sisodiya
 * Copyright(c)  2012 Mark MacKay
 *
 */

// Dependencies:
// 1) units.js
// 2) browser.js
// 3) svgcanvas.js

(function() {

  if(!window.methodDraw) window.methodDraw = function($) {
    var svgCanvas;
    var Editor = {};
    var is_ready = false;
    var curConfig = {
      canvas_expansion: 1,
      dimensions: [100, 100],
      initFill: {color: 'ffffff', opacity: 1},
      initStroke: {width: 3.5, color: '000000', opacity: 1},
      initOpacity: 1,
      imgPath: 'images/',
      extPath: 'extensions/',
      jGraduatePath: 'lib/jgraduate/images/',
      extensions: [],
      initTool: 'fhpath',
      wireframe: false,
      colorPickerCSS: false,
      gridSnapping: false,
      gridColor: "#000000",
      baseUnit: 'px',
      snappingStep: 10,
      showRulers: true,
      show_outside_canvas: false,
      no_save_warning: true,
      initFont: 'Helvetica, Arial, sans-serif',
      globalstrokecolor: '#000000',
      globalfillcolor: '#ffffff',
    };

    //alert("Is mainly Touch screen? " + svgedit.browser.isTouch());
    // showRulers: (svgedit.browser.isTouch()) ? false : true,
    var curPrefs = {}; //$.extend({}, defaultPrefs);
    var customHandlers = {};
    Editor.curConfig = curConfig;
    Editor.tool_scale = 1;
    Editor.numsaved = 0;
    Editor.eyedroppertitle = qtype_drawing_str_eyedroppertool;
    Editor.shapetitle = qtype_drawing_str_shapelibrary;
    Editor.viewgridtitle = qtype_drawing_str_viewgrid;
    Editor.savingready = 0;
    Editor.lastanswer = '';
    Editor.forcesaving = 0;

    Editor.setConfig = function(opts) {
      $.extend(true, curConfig, opts);
      if(opts.extensions) {
        curConfig.extensions = opts.extensions;
      }
    }

    // Extension mechanisms must call setCustomHandlers with two functions: opts.open and opts.save
    // opts.open's responsibilities are:
    //  - invoke a file chooser dialog in 'open' mode
    //  - let user pick a SVG file
    //  - calls setCanvas.setSvgString() with the string contents of that file
    // opts.save's responsibilities are:
    //  - accept the string contents of the current document
    //  - invoke a file chooser dialog in 'save' mode
    //  - save the file to location chosen by the user
    Editor.setCustomHandlers = function(opts) {
      Editor.ready(function() {
        if(opts.open) {
          $('#tool_open > input[type="file"]').remove();
          $('#tool_open').show();
          svgCanvas.open = opts.open;
        }
        if(opts.save) {
          Editor.show_save_warning = false;
          svgCanvas.bind("saved", opts.save);
        }
        if(opts.pngsave) {
          svgCanvas.bind("exported", opts.pngsave);
        }
        customHandlers = opts;
      });
    }

    Editor.randomizeIds = function() {
      svgCanvas.randomizeIds(arguments)
    }

    Editor.init = function() {
      // For external openers
      (function() {
        // let the opener know SVG Edit is ready
        var w = window.opener;
        if (w) {
              try {
            var methodDrawReadyEvent = w.document.createEvent("Event");
            methodDrawReadyEvent.initEvent("methodDrawReady", true, true);
            w.document.documentElement.dispatchEvent(methodDrawReadyEvent);
              }
          catch(e) {}
        }
      })();

      curConfig.dimensions =  [$('#fhd_width').val(), $('#fhd_height').val()];

/*
      questionID = $('#fhd_question_id').val();
      fhd_width = $('#fhd_width').val();
      fhd_height = $('#fhd_height').val();
      $("#canvas_width").val(fhd_width);
      $("#canvas_height").val(fhd_height);
      $("#canvas_width").trigger('change');
      $("#canvas_height").trigger('change');
      console.error(fhd_height);
      */
      $("body").toggleClass("touch", svgedit.browser.isTouch());
      $("#canvas_width").val(curConfig.dimensions[0]);
      $("#canvas_height").val(curConfig.dimensions[1]);

      var extFunc = function() {
        $.each(curConfig.extensions, function() {
          var extname = this;
          $.getScript(curConfig.extPath + extname, function(d) {
            // Fails locally in Chrome 5
            if(!d) {
              var s = document.createElement('script');
              s.src = curConfig.extPath + extname;
              document.querySelector('head').appendChild(s);
            }
          });
        });
      }

      // Load extensions
      // Bit of a hack to run extensions in local Opera/IE9
      if(document.location.protocol === 'file:') {
        setTimeout(extFunc, 100);
      } else {
        extFunc();
      }
      $.svgIcons(curConfig.imgPath + 'svg_edit_icons.svg', {
        w:27, h:27,
        id_match: false,
        no_img: true, // Opera & Firefox 4 gives odd behavior w/images
        fallback_path: curConfig.imgPath,
        fallback:{
          'logo':'logo.png',
          'select':'select.png',
          'select_node':'select_node.png',
          'pencil':'pencil.png',
          'pen':'line.png',
          'rect':'square.png',
          'ellipse':'ellipse.png',
          'path':'path.png',
          'text':'text.png',
          'image':'image.png',
          'zoom':'zoom.png',
          'delete':'delete.png',
          'spapelib':'shapelib.png',
          'node_delete':'node_delete.png',
          'align_left':'align-left.png',
          'align_center':'align-center.png',
          'align_right':'align-right.png',
          'align_top':'align-top.png',
          'align_middle':'align-middle.png',
          'align_bottom':'align-bottom.png',
          'arrow_right':'flyouth.png',
          'arrow_down':'dropdown.gif'
        },
        placement: {
          '#logo':'logo',
          '#tool_select':'select',
          '#tool_fhpath':'pencil',
          '#tool_line':'pen',
          '#tool_rect,#tools_rect_show':'rect',
          '#tool_ellipse,#tools_ellipse_show':'ellipse',
          '#tool_path':'path',
          '#tool_text,#layer_rename':'text',
          '#tool_image':'image',
          '#tool_zoom':'zoom',
          '#tool_node_clone':'node_clone',
          '#tool_node_delete':'node_delete',
          '#tool_add_subpath':'add_subpath',
          '#tool_openclose_path':'open_path',
          '#tool_alignleft, #tool_posleft':'align_left',
          '#tool_aligncenter, #tool_poscenter':'align_center',
          '#tool_alignright, #tool_posright':'align_right',
          '#tool_aligntop, #tool_postop':'align_top',
          '#tool_alignmiddle, #tool_posmiddle':'align_middle',
          '#tool_alignbottom, #tool_posbottom':'align_bottom',
          '#cur_position':'align',
          '#zoomLabel':'zoom'
        },
        resize: {
          '#logo .svg_icon': 15,
          '.flyout_arrow_horiz .svg_icon': 5,
          '#fill_bg .svg_icon, #stroke_bg .svg_icon': svgedit.browser.isTouch() ? 24 : 24,
          '.palette_item:first .svg_icon': svgedit.browser.isTouch() ? 30 : 16,
          '#zoomLabel .svg_icon': 16,
          '#zoom_dropdown .svg_icon': 7
        },
        callback: function(icons) {
          $('.toolbar_button button > svg, .toolbar_button button > img').each(function() {
            $(this).parent().prepend(this);
          });
          $('.tool_button, .tool_button_current').addClass("loaded")
          var tleft = $('#tools_left');
          if (tleft.length != 0) {
            var min_height = tleft.offset().top + tleft.outerHeight();
          }

          // Look for any missing flyout icons from plugins
          $('.tools_flyout').each(function() {
            var shower = $('#' + this.id + '_show');
            var sel = shower.attr('data-curopt');
            // Check if there's an icon here
            if(!shower.children('svg, img').length) {
              var clone = $(sel).children().clone();
              if(clone.length) {
                clone[0].removeAttribute('style'); //Needed for Opera
                shower.append(clone);
              }
            }
          });
         // Editor.ready(function() {
          /*
              questionID = svgCanvas.getHDQuestionID();
              Editor.lastanswer = window.parent.$('#qtype_drawing_textarea_id_'+questionID).val();
              console.error("saved from textarea");*/

          questionID = svgCanvas.getHDQuestionID();
          Editor.lastanswer = $('#qtype_drawing_textarea_id_'+attemptid+uniquefieldnameattemptid, window.parent.document).val();
         // console.error("saved from textarea", Editor.lastanswer);
       //   });
          methodDraw.runCallbacks();

        //  Editor.lastanswer = $('#qtype_drawing_textarea_id_'+questionID, window.parent.document).val();
        //  console.error("Second try:  from textarea",$('#qtype_drawing_textarea_id_'+questionID, window.parent.document).val());


          setTimeout(function() {
            $('.flyout_arrow_horiz:empty').each(function() {
              $(this).append($.getSvgIcon('arrow_right').width(5).height(5));
            });
          }, 1);
        }
      });

      $('#rulers').on("dblclick", function(e){
        $("#base_unit_container").css({
          top: e.pageY-10,
          left: e.pageX-50,
          display: 'block'
        })
      })
      $("#base_unit_container")
        .on("mouseleave mouseenter", function(e){
          t = setTimeout(function(){$("#base_unit_container").fadeOut(500)}, 200)
          if(event.type == "mouseover") clearTimeout(t)
        })
      $("#base_unit")
        .on("change", function(e) {
          savePreferences();
        });

      Editor.canvas = svgCanvas = new $.SvgCanvas(document.getElementById("svgcanvas"), curConfig);
      Editor.show_save_warning = false;
      Editor.paintBox = {fill: null, stroke:null, canvas:null};
      var palette = ["#444444", "#482816", "#422C10", "#3B2F0E", "#32320F",
                     "#293414", "#1F361B", "#153723", "#0C372C",
                     "#083734", "#0E353B", "#1A333F", "#273141",
                     "#332D40", "#3E2A3C", "#462735", "#4B252D",
                     "#4D2425", "#4C261D", "#666666", "#845335", "#7B572D",
                     "#6F5C2A", "#62612C", "#546433", "#46673D",
                     "#396849", "#306856", "#2D6862", "#33666C",
                     "#426373", "#535F75", "#645A73", "#74556D",
                     "#805064", "#884D58", "#8B4D4B", "#894F3F",
                     "#999999", "#C48157", "#B8874D", "#A98E49", "#97944B",
                     "#849854", "#729C62", "#619E73", "#559E84",
                     "#529D94", "#5B9BA2", "#6D97AB", "#8391AE",
                     "#9A8AAB", "#AF84A3", "#BF7E96", "#C97A86",
                     "#CE7975", "#CC7C65", "#BBBBBB", "#FFB27C", "#FABA6F",
                     "#E6C36A", "#CFCA6D", "#B8D078", "#A0D58A",
                     "#8CD79F", "#7DD8B5", "#7AD6CA", "#84D3DB",
                     "#9ACEE6", "#B6C7EA", "#D3BEE7", "#EDB6DC",
                     "#FFAFCC", "#FFAAB8", "#FFA9A2", "#FFAC8D",
                     "#DDDDDD", "#FFE7A2", "#FFF093", "#FFFA8D", "#FFFF91",
                     "#EEFF9F", "#D1FFB4", "#B9FFCE", "#A8FFE9",
                     "#A4FFFF", "#B1FFFF", "#CBFFFF", "#EDFFFF",
                     "#FFF5FF", "#FFEBFF", "#FFE2FF", "#FFDCEC",
                     "#FFDBD2", "#FFDFB8"
                 ],
        isMac = (navigator.platform.indexOf("Mac") >= 0),
        isWebkit = (navigator.userAgent.indexOf("AppleWebKit") >= 0),
        modKey = (isMac ? "meta+" : "ctrl+"), // ⌘
        path = svgCanvas.pathActions,
        undoMgr = svgCanvas.undoMgr,
        Utils = svgedit.utilities,
        default_img_url = curConfig.imgPath + "placeholder.svg",
        workarea = $("#workarea"),
        canv_menu = $("#cmenu_canvas"),
        exportWindow = null,
        tool_scale = 1,
        ui_context = 'toolbars',
        orig_source = '';


      // This puts the correct shortcuts in the menus
      if (!isMac) {
       $('.shortcut').each(function(){
         var text = $(this).text();
         $(this).text(text.split("⌘").join("Ctrl+"))
       });
      }

      // This sets up alternative dialog boxes. They mostly work the same way as
      // their UI counterparts, expect instead of returning the result, a callback
      // needs to be included that returns the result as its first parameter.
      // In the future we may want to add additional types of dialog boxes, since
      // they should be easy to handle this way.
      (function() {
        $('#dialog_container').draggable({cancel:'#dialog_content, #dialog_buttons *', containment: 'window'});
        var box = $('#dialog_box'), btn_holder = $('#dialog_buttons');

        var dbox = function(type, msg, callback, defText, removeallitems) {

            if(removeallitems !== 1){
                $('#dialog_content').html('<p>'+msg.replace(/\n/g,'</p><p>')+'</p>').toggleClass('prompt',(type=='prompt'));
            }
          btn_holder.empty();

          var ok = $('<input type="button" style="right:10px; left:initial" value="'+qtype_drawing_str_ok+'">').appendTo(btn_holder);

          if(removeallitems == 1){
              $('#dialog_container').css("position","absolute");
              $('#dialog_container').css("top","30px");
              $('#dialog_container').css("left","100px");
              $('#dialog_container').css("right","100px");
              $('#dialog_container').css("bottom","30px");
              $('#dialog_container').css("background-color","#fff");
              $('#dialog_container').css("border-radius","3px");
              $('#dialog_container').css("opacity","1");
              $('#dialog_container').css("z-index","6");
              $('#dialog_container').css("padding","15px 0");
              $('#dialog_container').css("width","initial");
              $('#dialog_container').css("height","initial");
              $('#dialog_container').css("margin-left","initial");
              $('#dialog_container').css("margin-top","initial");
              $('#dialog_content').css("height","100%");
              $('#dialog_content').css("overflow","auto");
              /*
              var originalbgimg = $('#qtype_drawing_original_bg_id_'+questionid, window.parent.document).val();
              var originalstdanswer = $('#qtype_drawing_original_stdanswer_id_'+questionid, window.parent.document).val();
              var imgelemtype = 'qtype_drawing_background_image_type_'+ questionid;
              var imgwidth = $('#qtype_drawing_background_image_width_'+questionid, window.parent.document).val();
              var imgheight = $('#qtype_drawing_background_image_height_'+questionid, window.parent.document).val();

              var backgroundtype = window.parent.document.getElementById(imgelemtype).value;
*/
            //  $('#dialog_content').html('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="baseSVGannotation" width="'+imgwidth+'" height="'+imgheight+'">' + originalbgimg + originalstdanswer + msg + '</svg>');
              $('#dialog_content').html(msg);

          } else {
              $('#dialog_container').removeAttr("style");
          }



          if(type != 'alert') {
            $('<input type="button" value="'+qtype_drawing_str_cancel+'">')
              .appendTo(btn_holder)
              .on("click touchstart", function() { box.hide();callback(false)});
          }

          if(type == 'prompt') {
            var input = $('<input type="text">').prependTo(btn_holder);
            input.val(defText || '');
            input.bind('keydown', 'return', function() {ok.trigger("click touchstart");});
          }

          if(type == 'process') {
            ok.hide();
          }

          box.show();

          ok.on("click touchstart", function() {
            box.hide();
            var resp = (type == 'prompt')?input.val():true;
            if(callback) callback(resp);
          }).focus();

          if(type == 'prompt') input.focus();
        }
        // is_ready=true; //NNANNA
        $.alert = function(msg, cb) { dbox('alert', msg, cb);};
        $.anottationalert = function(msg, cb) { dbox('alert', msg);};
        $.anottationdrawing = function(msg, cb) { dbox('alert', msg,null,null,1, questionid);};

        $.confirm = function(msg, cb) { dbox('confirm', msg, cb);};
        $.process_cancel = function(msg, cb) {  dbox('process', msg, cb);};
        $.prompt = function(msg, txt, cb) { dbox('prompt', msg, cb, txt);};
      }());

      var setSelectMode = function() {
        var curr = $('.tool_button_current');
        if(curr.length && curr[0].id !== 'tool_select') {
          curr.removeClass('tool_button_current').addClass('tool_button');
          $('#tool_select').addClass('tool_button_current').removeClass('tool_button');
        }
        svgCanvas.setMode('select');
      };

      var setEyedropperMode = function() {
        var curr = $('.tool_button_current');
        if(curr.length && curr[0].id !== 'tool_eyedropper') {
          curr.removeClass('tool_button_current').addClass('tool_button');
          $('#tool_eyedropper').addClass('tool_button_current').removeClass('tool_button');
        }
        svgCanvas.setMode('eyedropper');
      }

      var togglePathEditMode = function(editmode, elems) {
        $('#tools_bottom_2,#tools_bottom_3').toggle(!editmode);
        if(editmode) {
          // Change select icon
          $('.context_panel').hide();
          if( fhd_display_mode != 1){
              $('#path_node_panel').show();
            } else {
              $('#path_node_panel').hide();
            }

         // $('#path_node_panel').show();
          $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');
          $('#tool_select').addClass('tool_button_current').removeClass('tool_button');
          setIcon('#tool_select', 'select_node');
          multiselected = false;
        } else {
          if (elems[0]) {
            var selector = svgCanvas.selectorManager.requestSelector(elems[0])
            selector.reset(elems[0]);
            selector.selectorRect.setAttribute('display', 'inline');
          }

          setIcon('#tool_select', 'select');
        }
      }

      // used to make the flyouts stay on the screen longer the very first time
      var flyoutspeed = 1250;
      var textBeingEntered = false;
      var selectedElement = null;
      var multiselected = false;
      var editingsource = false;
      var docprops = false;
      var preferences = false;
      var cur_context = '';

      var saveHandler = function(window,svg) {

      };

      var exportHandler = function(window, data) {
        var issues = data.issues;

        if(!$('#export_canvas').length) {
          $('<canvas>', {id: 'export_canvas'}).hide().appendTo('body');
        }
        var c = $('#export_canvas')[0];

        c.width = svgCanvas.contentW;
        c.height = svgCanvas.contentH;
        canvg(c, data.svg, {renderCallback: function() {
          var datauri = c.toDataURL('image/png');
          exportWindow.location.href = datauri;
          var done = $.pref('export_notice_done');
          if(done !== "all") {
            var note ="Select \"Save As...\" in your browser to save this image as a PNG file.";
            // Check if there's issues
            if(issues.length) {
              var pre = "\n \u2022 ";
              note += ("\n\n" + "Also note the following issues: " + pre + issues.join(pre));
            }

            // Note that this will also prevent the notice even though new issues may appear later.
            // May want to find a way to deal with that without annoying the user
            $.pref('export_notice_done', 'all');
            exportWindow.alert(note);
          }
        }});
      };

      // called when we've selected a different element
      var selectedChanged = function(window,elems) {

        var mode = svgCanvas.getMode();
        var orgelems = elems;
        if(mode === "select"){
            setSelectMode();
        // In the event a gradient was flipped: MOREEE
         selectedElement = (elems.length == 1 || elems[1] == null ? elems[0] : null);
        if(selectedElement ) {
           // updateContextPanel();
          Editor.paintBox.fill.update();
          Editor.paintBox.stroke.update();

var strokecol = selectedElement.getAttribute("stroke");
var fillcol = selectedElement.getAttribute("fill");
var strokewid = selectedElement.getAttribute("stroke-width");
          function findrgb2hex(rgb) {
              rgb = rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
              function hex(x) {
                  return ("0" + parseInt(x).toString(16)).slice(-2);
              }
              return "#" + hex(rgb[1]) + hex(rgb[2]) + hex(rgb[3]);
          }


          $("#qtype_drawing_tool_color14 > img").css("outline", "1px solid "+strokecol);
          $("#qtype_drawing_tool_color15 > img").css("background-color",fillcol);

          $(".qtype_drawing_color_divsquare").removeClass("qtype_drawing_selectedcolor");
          $(".qtype_drawing_color_pallette").removeClass("qtype_drawing_selectedcolor");


          var rows = $('.qtype_drawing_color_divsquare').filter(function(){
              var color = $(this).css("background-color");
             // console.error(findrgb2hex(color));
              if(findrgb2hex(color) == strokecol){

                  $(this).addClass("qtype_drawing_selectedcolor");
              }
          });


          var sizes = $('.qtype_drawing_size_pen').filter(function(){
              var size = $(this).data("size");
              if(size == strokewid){

                  $(".qtype_drawing_size_pen div").removeClass("qtype_drawing_active_selection");
                  $("#"+this.id+" div").addClass("qtype_drawing_active_selection");
                //  $(this).addClass("qtype_drawing_active_selection");
              }
          });


        }


        }
        if (mode === "pathedit") return updateContextPanel();
        // if elems[1] is present, then we have more than one element
        selectedElement = (elems.length == 1 || elems[1] == null ? elems[0] : null);
        elems = elems.filter(Boolean)
        multiselected = (elems.length >= 2) ? elems : false;
        if (svgCanvas.elementsAreSame(multiselected)) selectedElement = multiselected[0]

        if(orgelems[0]){
            $("#canvas_panel").show();
        }

        if (selectedElement != null && multiselected.length < 2) {
            $('#multiselected_panel').hide();



        //

            /*
             *
             *     if (multiselected) {
        $('#multiselected_panel').show();

        $('.action_multi_selected').removeClass('disabled');
        $('#tool_ungroup').addClass('disabled');
        var menu_items = $('#cmenu_canvas li');
        menu_items.enableContextMenuItems('#delete,#cut,#copy,#move_front,#move_up,#move_down,#move_back');
        menu_items
          .enableContextMenuItems('#group')
          .disableContextMenuItems('#ungroup');


    }
             */

          updateToolbar();
          if (multiselected.length) {//multiselected elements are the same
            $('#tools_top').addClass('multiselected')
          }
          $('#selected_panel').show();


        }
        else if (multiselected.length) {
          $('.context_panel').hide()
          $('#tools_top').removeClass('multiselected')
         // $('#multiselected_panel').show();
          $('#tool_bucket').removeClass( 'disabled');
          $('#selected_panel').show();
          if(fhd_display_mode == 1){
            $('#multiselected_panel').hide();
          }

          $("#stroke_panel").show();
          $("#canvas_panel").show();
          $("#delete_panel").show();
          $("#strokewidth_div").show();

     //    console.error("what do yo uwant?");

          var menu_items = $('#cmenu_canvas li');

          $('.action_multi_selected').removeClass('disabled');
          $('.action_group_selected').addClass('disabled');
          menu_items
            .enableContextMenuItems('#group')
            .disableContextMenuItems('#ungroup');

        }
        else {
            $('.context_panel').hide()
          if(selectedElement != null){
              updateToolbar();
            //  $('.context_panel').show()
              $('#selected_panel').show();

              var menu_items = $('#cmenu_canvas li');
              menu_items.enableContextMenuItems('#delete,#cut,#copy,#move_front,#move_up,#move_down,#move_back');
              $('.action_selected').removeClass('disabled');
          }else{
              var menu_items = $('#cmenu_canvas li');
              menu_items.disableContextMenuItems('#delete,#cut,#copy,#move_front,#move_up,#move_down,#move_back');
              $('.action_selected').addClass('disabled');
          }

          $('#canvas_panel').show();
          $('#tool_bucket').addClass( 'disabled');
          $('#tools_top').removeClass('multiselected');


        }

        if(mode == 'textedit' || mode =='text' || (mode == 'select' && selectedElement && selectedElement.tagName == 'text' )){
            $("#preset_sizes_panel_id").hide();
        } else {
            $("#preset_sizes_panel_id").show();
        }


        svgCanvas.runExtensions("selectedChanged", {
          elems: elems,
          selectedElement: selectedElement,
          multiselected: multiselected
        });
      };

      // Call when part of element is in process of changing, generally
      // on mousemove actions like rotate, move, etc.
      var elementTransition = function(window,elems) {
        var mode = svgCanvas.getMode();
        var elem = elems[0];

        if(!elem) return;

        multiselected = (elems.length >= 2 && elems[1] != null) ? elems : null;
        // Only updating fields for single elements for now
        if(!multiselected) {
          switch ( mode ) {
            case "rotate":
              var ang = svgCanvas.getRotationAngle(elem);
              $('#angle').val(Math.round(ang));
              rotateCursor(ang);
              $('#tool_reorient').toggleClass('disabled', ang == 0);
              break;

            // TODO: Update values that change on move/resize, etc
//            case "select":
//            case "resize":
//              break;
          }
        }
        svgCanvas.runExtensions("elementTransition", {
          elems: elems
        });
      };

      // called when any element has changed
      var elementChanged = function(window,elems) {
        var mode = svgCanvas.getMode();
        if(mode === "select") {
          setSelectMode();
        }
        for (var i = 0; i < elems.length; ++i) {
          var elem = elems[i];

          // if the element changed was the svg, then it could be a resolution change
          if (elem && elem.tagName === "svg") {

            //populateLayers();
            updateCanvas();
          }
          // Update selectedElement if element is no longer part of the image.
          // This occurs for the text elements in Firefox
          else if(elem && selectedElement && selectedElement.parentNode == null) {
//            || elem && elem.tagName == "path" && !multiselected) { // This was added in r1430, but not sure why
            selectedElement = elem;
          }
        }

        Editor.show_save_warning = true;

        // we update the contextual panel with potentially new
        // positional/sizing information (we DON'T want to update the
        // toolbar here as that creates an infinite loop)
        // also this updates the history buttons

        // we tell it to skip focusing the text control if the
        // text element was previously in focus
        updateContextPanel();

        // In the event a gradient was flipped:
        if(selectedElement && mode === "select") {
          Editor.paintBox.fill.update();
          Editor.paintBox.stroke.update();
        }

        svgCanvas.runExtensions("elementChanged", {
          elems: elems
        });
      };

      var zoomChanged = function(window, bbox, autoCenter) {
        var scrbar = 15,
          res = svgCanvas.getResolution(),
          w_area = workarea,
          canvas_pos = $('#svgcanvas').position();
        var z_info = svgCanvas.setBBoxZoom(bbox, w_area.width()-scrbar, w_area.height()-scrbar);
        if(!z_info) return;
        var zoomlevel = z_info.zoom,
          bb = z_info.bbox;
        if(zoomlevel < .001) {
          changeZoom({value: .1});
          return;
        }
        if (typeof animatedZoom != 'undefined') window.cancelAnimationFrame(animatedZoom)
        // zoom duration 500ms
        var start = Date.now();
        var duration = 500;
        var diff = (zoomlevel) - (res.zoom)
        var zoom = $('#zoom')[0]
        var current_zoom = res.zoom;

        var animateZoom = function(timestamp) {
          var progress = Date.now() - start
          var tick = progress / duration
          tick = (Math.pow((tick-1), 3) +1);
          svgCanvas.setZoom(current_zoom + (diff*tick));
          updateCanvas();
          if (tick < 1 && tick > -.90) {
            window.animatedZoom = requestAnimationFrame(animateZoom)
          }
          else {
            $("#zoom").val(parseInt(zoomlevel*100))
            $("option", "#zoom_select").removeAttr("selected")
            $("option[value="+ parseInt(zoomlevel*100) +"]", "#zoom_select").attr("selected", "selected")
          }
        }
        animateZoom();



        //if(autoCenter) {
        //  updateCanvas();
        //} else {
       //  updateCanvas(false, {x: bb.x * zoomlevel + (bb.width * zoomlevel)/2, y: bb.y * zoomlevel + (bb.height * zoomlevel)/2});
        //}
      //  current_zoom = zoomlevel;
        svgCanvas.setZoom(zoomlevel);

        if(svgCanvas.getMode() == 'zoom' && bb.width) {
          // Go to select if a zoom box was drawn
          setSelectMode();
        }

        zoomDone();
      }

      $('#cur_context_panel').delegate('a', 'click', function() {
        var link = $(this);
        if(link.attr('data-root')) {
          svgCanvas.leaveContext();
        } else {
          svgCanvas.setContext(link.text());
        }
        svgCanvas.clearSelection();
        return false;
      });

      var contextChanged = function(win, context) {

        var link_str = '';
        if(context) {
          var str = '';
          link_str = '<a href="#" data-root="y">' + svgCanvas.getCurrentDrawing().getCurrentLayerName() + '</a>';

          $(context).parentsUntil('#svgcontent > g').andSelf().each(function() {
            if(this.id) {
              str += ' > ' + this.id;
              if(this !== context) {
                link_str += ' > <a href="#">' + this.id + '</a>';
              } else {
                link_str += ' > ' + this.id;
              }
            }
          });

          cur_context = str;
        } else {
          cur_context = null;
        }
        $('#cur_context_panel').toggle(!!context).html(link_str);

      }

      // Makes sure the current selected paint is available to work with
      var prepPaints = function() {
        Editor.paintBox.fill.prep();
        Editor.paintBox.stroke.prep();
      }

      var flyout_funcs = {};

      var setupFlyouts = function(holders) {
        $.each(holders, function(hold_sel, btn_opts) {
          var buttons = $(hold_sel).children();
          var show_sel = hold_sel + '_show';
          var shower = $(show_sel);
          var def = false;
          buttons.addClass('tool_button')
            .unbind('click mousedown mouseup') // may not be necessary
            .each(function(i) {
              // Get this buttons options
              var opts = btn_opts[i];

              // Remember the function that goes with this ID
              flyout_funcs[opts.sel] = opts.fn;

              if(opts.isDefault) def = i;

              // Clicking the icon in flyout should set this set's icon
              var func = function(event) {
                var options = opts;
                //find the currently selected tool if comes from keystroke
                if (event.type === "keydown") {
                  var flyoutIsSelected = $(options.parent + "_show").hasClass('tool_button_current');
                  var currentOperation = $(options.parent + "_show").attr("data-curopt");
                  $.each(holders[opts.parent], function(i, tool){
                    if (tool.sel == currentOperation) {
                      if(!event.shiftKey || !flyoutIsSelected) {
                        options = tool;
                      }
                      else {
                        options = holders[opts.parent][i+1] || holders[opts.parent][0];
                      }
                    }
                  });
                }
                if($(this).hasClass('disabled')) return false;
                if (toolButtonClick(show_sel)) {
                  options.fn();
                }
                if(options.icon) {
                  var icon = $.getSvgIcon(options.icon, true);
                } else {
                  var icon = $(options.sel).children().eq(0).clone();
                }

                icon[0].setAttribute('width',shower.width());
                icon[0].setAttribute('height',shower.height());
                shower.children(':not(.flyout_arrow_horiz)').remove();
                shower.append(icon).attr('data-curopt', options.sel); // This sets the current mode
              }

              $(this).mouseup(func);

              if(opts.key) {
                $(document).bind('keydown', opts.key[0] + " shift+" + opts.key[0], func);
              }
            });

          if(def) {
            shower.attr('data-curopt', btn_opts[def].sel);
          } else if(!shower.attr('data-curopt')) {
            // Set first as default
            shower.attr('data-curopt', btn_opts[0].sel);
          }

          var timer;

          var pos = $(show_sel).position();
          $(hold_sel).css({'left': pos.left+34, 'top': pos.top+77});

          // Clicking the "show" icon should set the current mode
          shower.mousedown(function(evt) {
            $('#workarea').one("mousedown", function(){$('#tools_shapelib').hide()})
            if ($('#tools_shapelib').is(":visible")) toolButtonClick(show_sel, false);
            if(shower.hasClass('disabled')) return false;
            var holder = $(hold_sel);
            var l = pos.left+34;
            var w = holder.width()*-1;
            var time = holder.data('shown_popop')?200:0;
            timer = setTimeout(function() {
              // Show corresponding menu
              if(!shower.data('isLibrary')) {
                holder.css('left', w).show().animate({
                  left: l
                },50);
              } else {
                holder.css('left', l).show();
              }
              holder.data('shown_popop',true);
            },time);
            evt.preventDefault();
          }).mouseup(function(evt) {
            clearTimeout(timer);
            var opt = $(this).attr('data-curopt');
            // Is library and popped up, so do nothing
            if(shower.data('isLibrary') && $(show_sel.replace('_show','')).is(':visible')) {
              toolButtonClick(show_sel, true);
              return;
            }
            if (toolButtonClick(show_sel) && (opt in flyout_funcs)) {
              flyout_funcs[opt]();
            }
          });

          //  $('#tools_rect').mouseleave(function(){$('#tools_rect').fadeOut();});
        });

        setFlyoutTitles();
      }

      var makeFlyoutHolder = function(id, child) {
        var div = $('<div>',{
          'class': 'tools_flyout',
          id: id
        }).appendTo('#svg_editor').append(child);

        return div;
      }

      var setFlyoutPositions = function() {
        $('.tools_flyout').each(function() {
          var shower = $('#' + this.id + '_show');
          var pos = shower.offset();
          var w = shower.outerWidth();
          $(this).css({left: (pos.left + w)*tool_scale, top: pos.top});
        });
      }

      var setFlyoutTitles = function() {
        $('.tools_flyout').each(function() {
          var shower = $('#' + this.id + '_show');
          if(shower.data('isLibrary')) return;

          var tooltips = [];
          $(this).children().each(function() {
            tooltips.push(this.title);
          });
          shower[0].title = tooltips.join(' / ');
        });
      }

      var resize_timer;

      var extAdded = function(window, ext) {

        var cb_called = false;
        var resize_done = false;
        var cb_ready = true; // Set to false to delay callback (e.g. wait for $.svgIcons)

        function prepResize() {
          if(resize_timer) {
            clearTimeout(resize_timer);
            resize_timer = null;
          }
          if(!resize_done) {
            resize_timer = setTimeout(function() {
              resize_done = true;
              setIconSize(curPrefs.iconsize);
            }, 50);
          }
        }


        var runCallback = function() {
          if(ext.callback && !cb_called && cb_ready) {
            cb_called = true;
            ext.callback();
          }
        }

        var btn_selects = [];

        if(ext.context_tools) {
          $.each(ext.context_tools, function(i, tool) {
            // Add select tool
            var cont_id = tool.container_id?(' id="' + tool.container_id + '"'):"";

            var panel = $('#' + tool.panel);

            // create the panel if it doesn't exist
            if(!panel.length)
              panel = $('<div>', {id: tool.panel}).appendTo("#tools_top").hide();

            // TODO: Allow support for other types, or adding to existing tool
            switch (tool.type) {
            case 'tool_button':
              var html = '<div class="tool_button">' + tool.id + '</div>';
              var div = $(html).appendTo(panel);
              if (tool.events) {
                $.each(tool.events, function(evt, func) {
                  $(div).bind(evt, func);
                });
              }
              break;
            case 'select':
              var html = '<label' + cont_id + '>'
                + '<select id="' + tool.id + '">';
              $.each(tool.options, function(val, text) {
                var sel = (val == tool.defval) ? " selected":"";
                html += '<option value="'+val+'"' + sel + '>' + text + '</option>';
              });
              html += "</select></label>";
              // Creates the tool, hides & adds it, returns the select element
              var sel = $(html).appendTo(panel).find('select');

              $.each(tool.events, function(evt, func) {
                $(sel).bind(evt, func);
              });
              break;
            case 'button-select':
              var html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">'
                + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';

              var list = $('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
              if(tool.colnum) {
                list.addClass('optcols' + tool.colnum);
              }

              // Creates the tool, hides & adds it, returns the select element
              var dropdown = $(html).appendTo(panel).children();

              btn_selects.push({
                elem: ('#' + tool.id),
                list: ('#' + tool.id + '_opts'),
                title: tool.title,
                callback: tool.events.change,
                cur: ('#cur_' + tool.id)
              });

              break;
            case 'input':
              var html = '<label' + cont_id + '>'
                + '<span id="' + tool.id + '_label">'
                + tool.label + ':</span>'
                + '<input id="' + tool.id + '" title="' + tool.title
                + '" size="' + (tool.size || "4") + '" value="' + (tool.defval || "") + '" type="text"/></label>'

              // Creates the tool, hides & adds it, returns the select element

              // Add to given tool.panel
              var inp = $(html).appendTo(panel).find('input');

              if(tool.spindata) {
                inp.SpinButton(tool.spindata);
              }

              if(tool.events) {
                $.each(tool.events, function(evt, func) {
                  inp.bind(evt, func);
                });
              }
              break;

            default:
              break;
            }
          });
        }

        if(ext.buttons) {
          var fallback_obj = {},
            placement_obj = {},
            svgicons = ext.svgicons;
          var holders = {};


          // Add buttons given by extension
          $.each(ext.buttons, function(i, btn) {
            var icon;
            var id = btn.id;
            var num = i;
            // Give button a unique ID
            while($('#'+id).length) {
              id = btn.id + '_' + (++num);
            }
            if(!svgicons) {
              icon = (btn.type == "menu") ? "" : $('<img src="' + btn.icon + '">');
            } else {
              fallback_obj[id] = btn.icon;
              var svgicon = btn.svgicon ? btn.svgicon : btn.id;
              if(btn.type == 'app_menu') {
                placement_obj['#' + id + ' > div'] = svgicon;
              } else {
                placement_obj['#' + id] = svgicon;
              }
            }

            var cls, parent;



            // Set button up according to its type
            switch ( btn.type ) {
            case 'mode_flyout':
            case 'mode':
              cls = 'tool_button';
              if(btn.cls) {
                cls += " " + btn.cls;
              }
              parent = "#tools_left";
              break;
            case 'context':
              cls = 'tool_button';
              parent = "#" + btn.panel;
              // create the panel if it doesn't exist
              if(!$(parent).length)
                $('<div>', {id: btn.panel}).appendTo("#tools_top");
              break;
            case 'menu':
              cls = 'menu_item tool_button';
              parent = "#" + (btn.after || btn.panel);
              break;
            case 'app_menu':
              cls = '';
              parent = btn.parent || '#main_menu ul';
              // create the panel if it doesn't exist
              if(!$(parent).length)
                $('<div>', {id: btn.panel}).appendTo("#tools_top");
              break;
            }

            var button = $((btn.list || btn.type == 'app_menu')?'<li/>':'<div/>')
              .attr("id", id)
              .attr("title", btn.title)
              .addClass(cls);
            if(!btn.includeWith && !btn.list) {
              if("position" in btn) {
                $(parent).children().eq(btn.position).before(button);
              } else {
                if (btn.type != "menu" || !btn.after) button.appendTo(parent);
                else $(parent).after(button);
              }

              if(btn.type =='mode_flyout') {
              // Add to flyout menu / make flyout menu
  //              var opts = btn.includeWith;
  //              // opts.button, default, position
                var ref_btn = $(button);

                var flyout_holder = ref_btn.parent();
                // Create a flyout menu if there isn't one already
                if(!ref_btn.parent().hasClass('tools_flyout')) {
                  // Create flyout placeholder
                  var tls_id = ref_btn[0].id.replace('tool_','tools_')
                  var show_btn = ref_btn.clone()
                    .attr('id',tls_id + '_show')
                    .append($('<div>',{'class':'flyout_arrow_horiz'}));

                  ref_btn.before(show_btn);

                  // Create a flyout div
                  flyout_holder = makeFlyoutHolder(tls_id, ref_btn);
                  flyout_holder.data('isLibrary', true);
                  show_btn.data('isLibrary', true);
                }



  //              var ref_data = Actions.getButtonData(opts.button);

                placement_obj['#' + tls_id + '_show'] = btn.id;
                // TODO: Find way to set the current icon using the iconloader if this is not default

                // Include data for extension button as well as ref button
                var cur_h = holders['#'+flyout_holder[0].id] = [{
                  sel: '#'+id,
                  fn: btn.events.click,
                  icon: btn.id,
                  //key: btn.key,
                  isDefault: true
                }, ref_data];

              } else if(btn.type == 'app_menu' || btn.type == 'menu') {
                button.append(btn.title);
              }

            } else if(btn.list) {
              // Add button to list
              button.addClass('push_button');
              $('#' + btn.list + '_opts').append(button);
              if(btn.isDefault) {
                $('#cur_' + btn.list).append(button.children().clone());
                var svgicon = btn.svgicon?btn.svgicon:btn.id;
                placement_obj['#cur_' + btn.list] = svgicon;
              }
            } else if(btn.includeWith) {
              // Add to flyout menu / make flyout menu
              var opts = btn.includeWith;
              // opts.button, default, position
              var ref_btn = $(opts.button);

              var flyout_holder = ref_btn.parent();
              // Create a flyout menu if there isn't one already
              if(!ref_btn.parent().hasClass('tools_flyout')) {
                // Create flyout placeholder
                var tls_id = ref_btn[0].id.replace('tool_','tools_')
                var show_btn = ref_btn.clone()
                  .attr('id',tls_id + '_show')
                  .append($('<div>',{'class':'flyout_arrow_horiz'}));

                ref_btn.before(show_btn);

                // Create a flyout div
                flyout_holder = makeFlyoutHolder(tls_id, ref_btn);
              }

              var ref_data = Actions.getButtonData(opts.button);

              if(opts.isDefault) {
                placement_obj['#' + tls_id + '_show'] = btn.id;
              }
              // TODO: Find way to set the current icon using the iconloader if this is not default

              // Include data for extension button as well as ref button
              var cur_h = holders['#'+flyout_holder[0].id] = [{
                sel: '#'+id,
                fn: btn.events.click,
                icon: btn.id,
                key: btn.key,
                isDefault: btn.includeWith?btn.includeWith.isDefault:0
              }, ref_data];

              // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}

              var pos  = ("position" in opts)?opts.position:'last';
              var len = flyout_holder.children().length;

              // Add at given position or end
              if(!isNaN(pos) && pos >= 0 && pos < len) {
                flyout_holder.children().eq(pos).before(button);
              } else {
                flyout_holder.append(button);
                cur_h.reverse();
              }
            }

            if(!svgicons) {
              button.append(icon);
            }

            if(!btn.list) {
              // Add given events to button
              $.each(btn.events, function(name, func) {
                if(name == "click") {
                  if(btn.type == 'mode') {
                    if(btn.includeWith) {
                      button.bind(name, func);
                    } else {
                      button.bind(name, function() {
                        if(toolButtonClick(button)) {
                          func();
                        }
                      });
                    }
                    if(btn.key) {
                      $(document).bind('keydown', btn.key, func);
                      if(btn.title) button.attr("title", btn.title + ' ['+btn.key+']');
                    }
                  } else {
                    button.bind(name, func);
                  }
                } else {
                  button.bind(name, func);
                }
              });
            }
            setupFlyouts(holders);
          });

          $.each(btn_selects, function() {
            addAltDropDown(this.elem, this.list, this.callback, {seticon: true});
          });

          if (svgicons)
            cb_ready = false; // Delay callback

          $.svgIcons(svgicons, {
            w:27, h:27,
            id_match: false,
            no_img: true,
            fallback: fallback_obj,
            placement: placement_obj,
            callback: function(icons) {
              // Non-ideal hack to make the icon match the current size
              if(curPrefs.iconsize && curPrefs.iconsize != 'm') {
                prepResize();
              }
              cb_ready = true; // Ready for callback
              runCallback();
            }

          });
        }

        runCallback();
      };

      var getPaint = function(color, opac, type) {
        // update the editor's fill paint
        var opts = null;
        if (color.indexOf("url(#") === 0) {
          var refElem = svgCanvas.getRefElem(color);
          if(refElem) {
            refElem = refElem.cloneNode(true);
          } else {
            refElem =  $("#" + type + "_color defs *")[0];
          }

          opts = { alpha: opac };
          opts[refElem.tagName] = refElem;
        }
        else if (color.indexOf("#") === 0) {
          opts = {
            alpha: opac,
            solidColor: color.substr(1)
          };
        }
        else {
          opts = {
            alpha: opac,
            solidColor: 'none'
          };
        }
        return new $.jGraduate.Paint(opts);
      };

      // set the canvas properties at init
      var res = svgCanvas.getResolution();
      if(curConfig.baseUnit !== "px") {
        res.w = svgedit.units.convertUnit(res.w) + curConfig.baseUnit;
        res.h = svgedit.units.convertUnit(res.h) + curConfig.baseUnit;
      }

      var changeZoom = function(ctl) {
        var zoomlevel = ctl.value / 100;
        if(zoomlevel < .001) {
          ctl.value = .1;
          return;
        }
        var zoom = svgCanvas.getZoom();
        var w_area = workarea;
        zoomChanged(window, {
          width: 0,
          height: 0,
          // center pt of scroll position
          x: (w_area[0].scrollLeft + w_area.width()/2)/zoom,
          y: (w_area[0].scrollTop + w_area.height()/2)/zoom,
          zoom: zoomlevel
        }, true);
      }

      var createBackground = function(fill) {
        svgCanvas.createLayer("background");
        cur_shape = svgCanvas.addSvgElementFromJson({
          "element": "rect",
          "attr": {
            "x": -1,
            "y": -1,
            "width": res.w+2,
            "height": res.h+2,
            "stroke": "none",
            "id": "canvas_background",
            "opacity": 1,
            "fill": fill || "#fff",
            "style": "pointer-events:none"
          }
        });
        svgCanvas.setCurrentLayer("Layer 1")
        svgCanvas.setCurrentLayerPosition("1")
      }

      // create a new layer background if it doesn't exist
      if (!document.getElementById('canvas_background')){

      //  $("#canvas_background").css('style','pointer-events:none;');
     //   svgCanvas.clear();
        //updateCanvas();
     //   createBackground();
     //   svgCanvas.setFHDBackground();
      //  svgCanvas.updateCanvas($('#canvas_width').val(), $('#canvas_height').val());
      //  svgCanvas.setBackground("fff","");
      //  createBackground('red');

      }
    //  var fill = document.getElementById('canvas_background').getAttribute("fill");

    //  $('#canvas_width').trigger('change');
    //  $('#canvas_height').trigger('change');
    //svgCanvas.setResolution($('#canvas_width').val(),$('#canvas_height').val());
    //svgCanvas.updateCanvas($('#canvas_width').val(), $('#canvas_height').val());
      // updates the toolbar (colors, opacity, etc) based on the selected element
      // This function also updates the opacity and id elements that are in the context panel
      var updateToolbar = function() {
        if (selectedElement != null) {
            $('#delete_panel').show();
            if( fhd_display_mode == 1 && selectedElement.tagName == 'line'){
                $('#force_remove_stroke_style').show();
                // Reset dash if any.
                var dash = selectedElement.getAttribute("stroke-dasharray") || "none";
                if(dash == "null") dash = 'none';
                $('option', '#stroke_style').removeAttr('selected');
                $('#stroke_style option[value="'+ dash +'"]').attr("selected", "selected");
                $('#stroke_style').val(dash);
                $("#stroke_style_label").html($( "#stroke_style option:selected" ).text());

            }
            if( fhd_display_mode == 1 && selectedElement.tagName == 'path'){
                $('#force_remove_stroke_style').hide();
            }
          switch ( selectedElement.tagName ) {
          case 'use':
            $(".context_panel").hide();
            $("#use_panel").show();
            break;
          case 'image':
            $(".context_panel").hide();
            $("#image_panel").show();
            break;
          case 'foreignObject':
            $(".context_panel").hide();
            break;
          case 'g':
          case 'a':
            // Look for common styles
            var gWidth = null;

            var childs = selectedElement.getElementsByTagName('*');
            for(var i = 0, len = childs.length; i < len; i++) {
              var swidth = childs[i].getAttribute("stroke-width");
              if(i === 0) {
                gWidth = swidth;
              } else if(gWidth !== swidth) {
                gWidth = null;
              }
            }

            $('#stroke_width').val(gWidth === null ? "0" : gWidth);
            updateContextPanel();
            break;
          default:
            //removed because multiselect shouldnt set color
            //Editor.paintBox.fill.update(false);
            //Editor.paintBox.stroke.update(false);
            $('#stroke_width').val(selectedElement.getAttribute("stroke-width") || 0);
            if(selectedElement.tagName != 'text'){
              var dash = selectedElement.getAttribute("stroke-dasharray") || "none";
              if(dash == 'null') dash = 'none';
              $('option', '#stroke_style').removeAttr('selected');
              $('#stroke_style option[value="'+ dash +'"]').attr("selected", "selected");
              $('#stroke_style').val(dash);
              $("#stroke_style_label").html($( "#stroke_style option:selected" ).text());
            } else {
            //  $('.context_panel').hide();
              $('#strokewidth_div').hide();
              $('#text_panel').css("display", "inline");
            }
            $.fn.dragInput.updateCursor($('#stroke_width')[0])
            $.fn.dragInput.updateCursor($('#blur')[0])
          }

        }else{
            $('#delete_panel').hide();
        }
        if(selectedElement != null){
            if(selectedElement.tagName !='text'){
                $('#text_panel').hide();
            } else {
                $('#text_panel').show();
            }

        }


        // All elements including image and group have opacity
        if(selectedElement != null) {
          var opac_perc = ((selectedElement.getAttribute("opacity")||1.0)*100);
          $('#group_opacity').val(opac_perc);
          $.fn.dragInput.updateCursor($('#group_opacity')[0])
        }
      };

      var setImageURL = Editor.setImageURL = function(url) {
        if(!url) url = default_img_url;

        svgCanvas.setImageURL(url);
        $('#image_url').val(url);
      }

      var setInputWidth = function(elem) {
        var w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);
        $(elem).width(w);
      }

      // updates the context panel tools based on the selected element
      var updateContextPanel = function(e) {
        var elem = selectedElement;
        // If element has just been deleted, consider it null
        if(elem != null && !elem.parentNode) elem = null;
        if (multiselected && multiselected[0] != null && !multiselected[0].parentNode) multiselected = false;

        var currentLayerName = svgCanvas.getCurrentDrawing().getCurrentLayerName();
        var currentMode = svgCanvas.getMode();
        var unit = curConfig.baseUnit !== 'px' ? curConfig.baseUnit : null;
        var is_node = currentMode == 'pathedit'; //elem ? (elem.id && elem.id.indexOf('pathpointgrip') == 0) : false;

        if(currentMode == 'select' && elem != null){
          if(elem.nodeName =='text'){
            $('#strokewidth_div').hide();
            $('#strokestyle_div').hide();

          }


        }

        if (is_node) {
          $('.context_panel').hide();
          if( fhd_display_mode != 1){
              $('#path_node_panel').show();
            } else {
              $('#path_node_panel').hide();
            }
         // $('#path_node_panel').show();
          $('#stroke_panel').show(); // was hide.
          var point = path.getNodePoint();
          $('#tool_add_subpath').removeClass('push_button_pressed').addClass('tool_button');
          $('#tool_node_delete').toggleClass('disabled', !path.canDeleteNodes);

          // Show open/close button based on selected point
          setIcon('#tool_openclose_path', path.closed_subpath ? 'open_path' : 'close_path');

          if(point) {
            var seg_type = $('#seg_type');
            if(unit) {
              point.x = svgedit.units.convertUnit(point.x);
              point.y = svgedit.units.convertUnit(point.y);
            }
            $('#path_node_x').val(Math.round(point.x));
            $('#path_node_y').val(Math.round(point.y));
            if(point.type) {
              seg_type.val(point.type).removeAttr('disabled');
              $("#seg_type_label").html(point.type == 4 ? "Straight" : "Curve")
            } else {
              seg_type.val(4).attr('disabled','disabled');
            }
          }
          $("#tools_top").removeClass("multiselected")
          $("#stroke_panel").show(); // was hide.
        //  $("#canvas_panel").hide();
         $("#canvas_panel").show();

          return;
        }

        var menu_items = $('#cmenu_canvas li');
        $('.context_panel').hide();
        $('.menu_item', '#edit_menu').addClass('disabled');
        $('.menu_item', '#object_menu').addClass('disabled');
        //hack to show the proper multialign box
        if (multiselected) {
          multiselected = multiselected.filter(Boolean);
          elem = (svgCanvas.elementsAreSame(multiselected)) ? multiselected[0] : multiselected[0]
          if (elem) $("#tools_top").addClass("multiselected");

        }

        if (!elem && !multiselected) {
          $("#tools_top").removeClass("multiselected")
          $("#stroke_panel").show(); // was hide.
          $("#canvas_panel").show();
        }

        if (elem != null) {
          $("#stroke_panel").show();
          var elname = elem.nodeName;
          var angle = svgCanvas.getRotationAngle(elem);
          $('#angle').val(Math.round(angle));

          var blurval = svgCanvas.getBlur(elem);
          $('#blur').val(blurval);
          if(!is_node && currentMode != 'pathedit') {
            $('#selected_panel').show();
            $('.action_selected').removeClass('disabled');
            // Elements in this array already have coord fields
            var x, y
            if(['g', 'polyline', 'path'].indexOf(elname) >= 0) {
              var bb = svgCanvas.getStrokedBBox([elem]);
              if(bb) {
                x = bb.x;
                y = bb.y;
              }
            }

            if(unit) {
              x = svgedit.units.convertUnit(x);
              y = svgedit.units.convertUnit(y);
            }

            $("#" + elname +"_x").val(Math.round(x))
            $("#" + elname +"_y").val(Math.round(y))
            if (elname === "polyline") {
              //we're acting as if polylines were paths
              $("#path_x").val(Math.round(x))
              $("#path_y").val(Math.round(y))
            }

            // Elements in this array cannot be converted to a path
            var no_path = ['image', 'text', 'path', 'g', 'use'].indexOf(elname) == -1;
            if (no_path) $('.action_path_convert_selected').removeClass('disabled');
            if (elname === "path") $('.action_path_selected').removeClass('disabled');

          }

          var link_href = null;
          if (el_name === 'a') {
            link_href = svgCanvas.getHref(elem);
            $('#g_panel').show();
          }

          if(elem.parentNode.tagName === 'a') {
            if(!$(elem).siblings().length) {
              $('#a_panel').show();
              link_href = svgCanvas.getHref(elem.parentNode);
            }
          }

          // Hide/show the make_link buttons
          $('#tool_make_link, #tool_make_link').toggle(!link_href);

          if(link_href) {
            $('#link_url').val(link_href);
          }
          // update contextual tools here
          var panels = {
            g: [],
            a: [],
            rect: ['rx','width','height', 'x', 'y'],
            image: ['width','height', 'x', 'y'],
            circle: ['cx','cy','r'],
            ellipse: ['cx','cy','rx','ry'],
            line: ['x1','y1','x2','y2'],
            text: ['x', 'y'],
            'use': [],
            path : []
          };

          var el_name = elem.tagName;

          if($(elem).data('gsvg')) {
            $('#g_panel').show();
          }



          if (el_name == "path" || el_name == "polyline") {
            if( fhd_display_mode != 1){
              $('#path_panel').show();
            } else {
              $('#path_panel').hide();
            }

          }

          if(panels[el_name]) {
            var cur_panel = panels[el_name];
            $('#canvas_panel').show();
          if( fhd_display_mode != 1){
            $('#' + el_name + '_panel').show();

            if(el_name == 'text'){
              $('#strokestyle_div').hide();
            }else {
              $('#strokestyle_div').show();
            }
          }
//console.error("fhd_display_mode",'#' + el_name + '_panel', fhd_display_mode);
            // corner radius has to live in a different panel
            // because otherwise it changes the position of the
            // of the elements
            if(el_name == "rect") $("#cornerRadiusLabel").show()
            else $("#cornerRadiusLabel").hide()

            $.each(cur_panel, function(i, item) {
              var attrVal = elem.getAttribute(item);
              if(curConfig.baseUnit !== 'px' && elem[item]) {
                var bv = elem[item].baseVal.value;
                attrVal = svgedit.units.convertUnit(bv);
              }

              //update the draginput cursors
              var name_item = document.getElementById(el_name + '_' + item);
              name_item.value = Math.round(attrVal) || 0;
              if (name_item.getAttribute("data-cursor") === "true") {
                $.fn.dragInput.updateCursor(name_item );
              }
            });

            if(el_name == 'text') {
              var font_family = elem.getAttribute("font-family");
              var select = document.getElementById("font_family_dropdown");
              select.selectedIndex = 3

              $('#text_panel').css("display", "inline");
              $('#tool_italic').toggleClass('active', svgCanvas.getItalic())
              $('#tool_bold').toggleClass('active', svgCanvas.getBold())
              $('#font_family').val(font_family);
              $('#font_size').val(elem.getAttribute("font-size"));
              $('#text').val(elem.innerHTML); //textContent
            //  $('#preview_font').text(font_family.split(",")[0].replace(/'/g, "")).css('font-family', font_family);
              if (svgCanvas.addedNew) {
                // Timeout needed for IE9
                setTimeout(function() {
                  $('#text').focus().select();
                },100);
              }
            } // text
            else if(el_name == 'image') {
              setImageURL(svgCanvas.getHref(elem));
            } // image
            else if(el_name === 'g' || el_name === 'use') {
              $('#container_panel').show();
              $('.action_group_selected').removeClass('disabled');
              var title = svgCanvas.getTitle();
            }
          }
          menu_items[(el_name === 'g' ? 'en':'dis') + 'ableContextMenuItems']('#ungroup');
          menu_items[((el_name === 'g' || !multiselected) ? 'dis':'en') + 'ableContextMenuItems']('#group');


          $('#delete_panel').show();
          $('#canvas_panel').show();
        }

        if (multiselected) {


          $('#tool_bucket').removeClass( 'disabled');


          $("#stroke_panel").show();
          $("#canvas_panel").show();
          $("#delete_panel").show();
          $("#strokewidth_div").show();


          $('.action_multi_selected').removeClass('disabled');
          $('.action_group_selected').addClass('disabled');
          menu_items
            .enableContextMenuItems('#group')
            .disableContextMenuItems('#ungroup');
        }
        if (!elem) {
          menu_items.disableContextMenuItems('#delete,#cut,#copy,#group,#ungroup,#move_front,#move_up,#move_down,#move_back');
        }else{
            $('#selected_panel').show();

        }

        // update history buttons
        if (undoMgr.getUndoStackSize() > 0) {
          $('#tool_undo').removeClass( 'disabled');
        }
        else {
          $('#tool_undo').addClass( 'disabled');
        }
        //added by amr for disabling undo first time.
        if(undoMgr.getNextUndoCommandText() == 'Create Layer' || undoMgr.getNextUndoCommandText() == ''){
          $('#tool_undo').addClass( 'disabled');
        }
        if (undoMgr.getRedoStackSize() > 0) {
          $('#tool_redo').removeClass( 'disabled');
        }
        else {
          $('#tool_redo').addClass( 'disabled');
        }
        //added by amr to disabled fillbucket when no object selected.

        if (elem  || multiselected) {
          $('#tool_bucket').removeClass( 'disabled');
        } else {
          $('#tool_bucket').addClass( 'disabled');
        }

        svgCanvas.addedNew = false;

        if ( (elem && !is_node) || multiselected) {
          // update the selected elements' layer
          $('#selLayerNames').removeAttr('disabled').val(currentLayerName);

          // Enable regular menu options
          canv_menu.enableContextMenuItems('#delete,#cut,#copy,#move_front,#move_up,#move_down,#move_back');

        }

        if(currentMode == 'select'  && elem == null){
            $("#canvas_panel").hide();
        }

      };

      $('#text').on("focus", function(e){ textBeingEntered = true; } );
      $('#text').on("blur", function(){ textBeingEntered = false; } );

      // bind the selected event to our function that handles updates to the UI
      svgCanvas.bind("selected", selectedChanged);
      svgCanvas.bind("transition", elementTransition);
      svgCanvas.bind("changed", elementChanged);
      svgCanvas.bind("exported", exportHandler);
      svgCanvas.bind("zoomed", zoomChanged);
      svgCanvas.bind("contextset", contextChanged);
      svgCanvas.bind("extension_added", extAdded);
      svgCanvas.textActions.setInputElem($("#text")[0]);

      var str = '<div class="palette_item transparent" data-rgb="none"></div>\
                <div class="palette_item black" data-rgb="#000000"></div>\
                <div class="palette_item white" data-rgb="#ffffff"></div>'
      palette.forEach(function(item, i){
        str += '<div class="palette_item" style="background-color: ' + item + ';" data-rgb="' + item + '"></div>';
      });
      $('#palette').append(str);

      var changeFontSize = function(ctl) {
        svgCanvas.setFontSize(ctl.value);
      }

      var changeStrokeWidth = function(ctl) {
        var val = ctl.value;
        if(val == 0 && selectedElement && ['line', 'polyline'].indexOf(selectedElement.nodeName) >= 0) {
          val = ctl.value = 1;
        }
        if(svgCanvas.getMode() == 'fhpath' || svgCanvas.getMode() == 'line'){ // dont allow stroke for drawing to go zero so it draws.
          if(val == 0){
            val = ctl.value = 3.5;
          }
        }
        svgCanvas.setStrokeWidth(val);
      }

      //cache
      var $indicator = $('#tool_angle_indicator')
      var $reorient = $('#tool_reorient')

      rotateCursor = function(angle){
        var rotate_string = 'rotate('+ angle + 'deg)'
        $indicator.css({
          '-webkit-transform': rotate_string,
          '-moz-transform': rotate_string,
          '-o-transform': rotate_string,
          '-ms-transform': rotate_string,
          'transform': rotate_string
        });
      }

      var changeRotationAngle = function(ctl) {
        var preventUndo = true;
        svgCanvas.setRotationAngle(ctl.value, preventUndo);
        rotateCursor(ctl.value)
        $('#tool_reorient').toggleClass('disabled', ctl.value == 0);
      }
/*
      var changeZoom = function(ctl) {
        var zoomlevel = ctl.value / 100;
        if(zoomlevel < .001) {
          ctl.value = .1;
          return;
        }
        var zoom = svgCanvas.getZoom();
        var w_area = workarea;
        zoomChanged(window, {
          width: 0,
          height: 0,
          // center pt of scroll position
          x: (w_area[0].scrollLeft + w_area.width()/2)/zoom,
          y: (w_area[0].scrollTop + w_area.height()/2)/zoom,
          zoom: zoomlevel
        }, true);
      }
*/
      var changeBlur = function(ctl, completed) {
        val = ctl.value;
        $('#blur').val(val);
        if (completed) {
          svgCanvas.setBlur(val, true);
        }
        else {
          svgCanvas.setBlurNoUndo(val);
        }
      }


      var operaRepaint = function() {
        // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change
        if(!window.opera) return;
        $('<p/>').hide().appendTo('body').remove();
      }

      $('#stroke_style').change(function(){
        svgCanvas.setStrokeAttr('stroke-dasharray', $(this).val());
        $("#stroke_style_label").html(this.options[this.selectedIndex].text);
        operaRepaint();
      });

      $('#seg_type').change(function() {
        svgCanvas.setSegType($(this).val());
        $("#seg_type_label").html(this.options[this.selectedIndex].text)
      });

      // Lose focus for select elements when changed (Allows keyboard shortcuts to work better)
      $('select').change(function(){$(this).blur();});

      $('#font_family').change(function() {
        svgCanvas.setFontFamily(this.value);
      });

      $('#text').keyup(function(e){
         var sel = svgCanvas.getSelectedElems();
         svgCanvas.undoMgr.beginUndoableChange("text", sel);

         $(this).val($(this).val().replace(/[~&]/g, '﹠'));
         $(this).val($(this).val().replace(/[~\'\"]/g, '`'));
         $(this).val($(this).val().replace(/[~<]/g, '〈'));
         $(this).val($(this).val().replace(/[~>]/g, '〉'));
         
        var txtval = this.value;
        txtval = txtval.replace(/<\/tspan>/ig,"\n");
        txtval = txtval.replace(/(<([^>]+)>)/ig, "");
        var newtextlines = txtval.split(/\n/);
         var updatedtxtval = '';
         var extrady ='';
         var textXlocation = sel[0].getAttribute('x');
         var textYlocation = sel[0].getAttribute('y');
         var textid = sel[0].getAttribute('id');
           for(var i=0;i<newtextlines.length;i++){
             if(i==0){
               extrady = '';
             } else {
                 extrady = 'dy="1em"';
             }
             if(newtextlines[i] == ''){newtextlines[i] = " ";}
              var cleanText = newtextlines[i].replace(/<\/?[^>]+(>|$)/g, "");

              updatedtxtval += '<tspan id="'+textid+'_tspan_'+i+'" x="'+textXlocation+'" '+extrady+'>' + cleanText + '</tspan>';
          
           }

            svgCanvas.selectorManager.requestSelector(sel[0]).resize();
            sel[0].innerHTML = updatedtxtval;
            svgCanvas.selectorManager.requestSelector(sel[0]).resize();

        //    svgCanvas.changeSelectedAttributeNoUndo("text", updatedtxtval, sel);
            var batchCmd = svgCanvas.undoMgr.finishUndoableChange();
            if (!batchCmd.isEmpty()) {
              svgCanvas.undoMgr.addCommandToHistory(batchCmd);
              // Save to Moodle!
              methodDraw.SaveDrawingToMoodle();
            }


      });

      changeAttribute = function(el, completed) {
        var attr = el.getAttribute("data-attr");
        var multiplier = el.getAttribute("data-multiplier") || 1;
        multiplier = parseFloat(multiplier);
        var val = el.value * multiplier;
        var valid = svgedit.units.isValidUnit(attr, val, selectedElement);
        if(!valid) {
          $.alert("Invalid value given");
          el.value = selectedElement.getAttribute(attr);
          return false;
        }
        //if (!noUndo) svgCanvas.changeSelectedAttribute(attr, val);
        svgCanvas.changeSelectedAttributeNoUndo(attr, val);
      };

      picking = false;
      $(document).on("mouseup", function(){picking = false;})

      $('#palette').on("mousemove mousedown touchstart touchmove", ".palette_item", function(evt){
        evt.preventDefault();

        if (evt.type == "mousedown") picking = true;
        if (picking) {
          var isStroke = $('#tool_stroke').hasClass('active');
          var picker = isStroke ? "stroke" : "fill";
          var color = $(this).attr('data-rgb');
          var paint = null;
          var noUndo = true;
          if (evt.type == "mousedown") noUndo = false
          // Webkit-based browsers returned 'initial' here for no stroke
          if (color === 'transparent' || color === 'initial' || color === '#none') {
            color = 'none';
            paint = new $.jGraduate.Paint();
          }
          else {
            paint = new $.jGraduate.Paint({alpha: 100, solidColor: color.substr(1)});
          }

          Editor.paintBox[picker].setPaint(paint);
          if (isStroke) {
            svgCanvas.setColor('stroke', color, noUndo);
            if (color != 'none' && svgCanvas.getStrokeOpacity() != 1) {
              svgCanvas.setPaintOpacity('stroke', 1.0);
            }
          } else {
            svgCanvas.setColor('fill', color, noUndo);
            if (color != 'none' && svgCanvas.getFillOpacity() != 1) {
              svgCanvas.setPaintOpacity('fill', 1.0);
            }
          }
        }
      }).bind('contextmenu', function(e) {e.preventDefault()});

      $("#toggle_stroke_tools").toggle(function() {
        $(".stroke_tool").css('display','table-cell');
        $(this).addClass('expanded');
        resetScrollPos();
      }, function() {
        $(".stroke_tool").css('display','none');
        $(this).removeClass('expanded');
        resetScrollPos();
      });

      // This is a common function used when a tool has been clicked (chosen)
      // It does several common things:
      // - removes the tool_button_current class from whatever tool currently has it
      // - hides any flyouts
      // - adds the tool_button_current class to the button passed in
      var toolButtonClick = function(button, noHiding) {
        $('#zoom_panel').show();
        if ($(button).hasClass('disabled')) return false;
        if($(button).parent().hasClass('tools_flyout')) return true;
        var fadeFlyouts = fadeFlyouts || 'normal';
        svgCanvas.clearSelection();
        if(!noHiding) {
          $('.tools_flyout').fadeOut(fadeFlyouts);
        }
        $('#styleoverrides').text('');
        $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');
        $(button).addClass('tool_button_current').removeClass('tool_button');
        return true;
      };

      (function() {
        var last_x = null, last_y = null, w_area = workarea[0],
          panning = false, keypan = false;

        var move_pan = function(evt) {
            if(panning === false) return;

            w_area.scrollLeft -= (evt.clientX - last_x);
            w_area.scrollTop -= (evt.clientY - last_y);
            last_x = evt.clientX;
            last_y = evt.clientY;
            if(evt.type === 'mouseup' || evt.type === 'touchend') panning = false;
            return false;
        }

        var start_pan = function(evt) {
          if(evt.button === 1 || keypan === true || (evt.originalEvent.touches && evt.originalEvent.touches.length >= 2)) {
            panning = true;
            last_x = evt.clientX;
            last_y = evt.clientY;
            return false;
          }
        }

        $('#svgcanvas')
          .on('mousemove mouseup touchend', move_pan)
          .on("mousedown touchmove", start_pan)

        $(window).mouseup(function() {
          panning = false;
        });

        $(document).bind('keydown', 'space', function(evt) {
          evt.preventDefault();
          svgCanvas.spaceKey = keypan = true;

        }).bind('keyup', 'space', function(evt) {
          evt.preventDefault();
          svgCanvas.spaceKey = keypan = false;
        }).bind('keydown', 'alt', function(evt) {
          if(svgCanvas.getMode() === 'zoom') {
            workarea.addClass('out');
          }
        }).bind('keyup', 'alt', function(evt) {
          if(svgCanvas.getMode() === 'zoom') {
            workarea.removeClass('out');
          }
        })
      }());


      function setStrokeOpt(opt, changeElem) {
        var id = opt.id;
        var bits = id.split('_');
        var pre = bits[0];
        var val = bits[1];

        if(changeElem) {
          svgCanvas.setStrokeAttr('stroke-' + pre, val);
        }
        operaRepaint();
        setIcon('#cur_' + pre , id, 20);
        $(opt).addClass('current').siblings().removeClass('current');
      }

      //menu handling
      var menus = $('.menu');
      var blinker = function(e) {
        e.target.style.background = "#fff";
        setTimeout(function(){e.target.style.background = "#ddd";}, 50);
        setTimeout(function(){e.target.style.background = "#fff";}, 150);
        setTimeout(function(){e.target.style.background = "#ddd";}, 200);
        setTimeout(function(){e.target.style.background = "";}, 200);
        setTimeout(function(){$('#menu_bar').removeClass('active')}, 220);
        return false;
      }
      var closer = function(e){
        if (e.target.nodeName && e.target.nodeName.toLowerCase() === "input") return false;
        if (!$(e.target).hasClass("menu_title") && !$(e.target).parent().hasClass("menu_title")) {
          if(!$(e.target).hasClass("disabled") && $(e.target).hasClass("menu_item")) blinker(e)
          else $('#menu_bar').removeClass('active')

        }
      }

      $('.menu_item').on('mousedown touchstart', function(e){blinker(e)});
      $("svg, body").on('mousedown  touchstart', function(e){closer(e)});

      var accumulatedDelta = 0
      $('#workarea').on('mousewheel', function(e, delta, deltaX, deltaY){
        if (e.altKey || e.ctrlKey) {
          e.preventDefault();
          zoom = parseInt($("#zoom").val())
          $("#zoom").val(parseInt(zoom + deltaY*(e.altKey ? 10 : 5))).change()
        }
      });

      $('.menu_title')
        .on('mousedown', function(e) {
          $("#tools_shapelib").hide();
          $("#menu_bar").toggleClass('active');
          menus.removeClass('open');
          $(this).parent().addClass('open');
          e.preventDefault();
          e.stopPropagation();
        })
        .on('mouseover', function(e) {
           menus.removeClass('open');
           $(this).parent().addClass('open');
           e.preventDefault();
           e.stopPropagation();
         });


      // Made public for UI customization.
      // TODO: Group UI functions into a public methodDraw.ui interface.
      Editor.addDropDown = function(elem, callback, dropUp) {
        if ($(elem).length == 0) return; // Quit if called on non-existant element
        var button = $(elem).find('button');

        var list = $(elem).find('ul').attr('id', $(elem)[0].id + '-list');

        if(!dropUp) {
          // Move list to place where it can overflow container
          $('#option_lists').append(list);
        }

        var on_button = false;
        if(dropUp) {
          $(elem).addClass('dropup');
        }

        list.find('li').bind('mouseup', callback);

        $(window).mouseup(function(evt) {
          if(!on_button) {
            button.removeClass('down');
            list.hide();
          }
          on_button = false;
        });

        button.bind('mousedown',function() {
          if (!button.hasClass('down')) {
            button.addClass('down');

            if(!dropUp) {
              var pos = $(elem).offset();
              // position slider
              list.css({
                top: pos.top,
                left: pos.left - 110
              });
            }
            list.show();

            on_button = true;
          } else {
            button.removeClass('down');
            list.hide();
          }
        }).hover(function() {
          on_button = true;
        }).mouseout(function() {
          on_button = false;
        });
      }

      // TODO: Combine this with addDropDown or find other way to optimize
      var addAltDropDown = function(elem, list, callback, opts) {
        var button = $(elem);
        var list = $(list);
        var on_button = false;
        var dropUp = opts.dropUp;
        if(dropUp) {
          $(elem).addClass('dropup');
        }
        list.find('li').bind('mouseup', function() {
          if(opts.seticon) {
            setIcon('#cur_' + button[0].id , $(this).children());
            $(this).addClass('current').siblings().removeClass('current');
          }
          callback.apply(this, arguments);

        });

        $(window).mouseup(function(evt) {
          if(!on_button) {
            button.removeClass('down');
            list.hide();
            list.css({top:0, left:0});
          }
          on_button = false;
        });

        var height = list.height();
        $(elem).bind('mousedown',function() {
          var off = $(elem).offset();
          if(dropUp) {
            off.top -= list.height();
            off.left += 8;
          } else {
            off.top += $(elem).height();
          }
          $(list).offset(off);

          if (!button.hasClass('down')) {
            button.addClass('down');
            list.show();
            on_button = true;
            return false;
          } else {
            button.removeClass('down');
            // CSS position must be reset for Webkit
            list.hide();
            list.css({top:0, left:0});
          }
        }).hover(function() {
          on_button = true;
        }).mouseout(function() {
          on_button = false;
        });

        if(opts.multiclick) {
          list.mousedown(function() {
            on_button = true;
          });
        }
      }

      $('#font_family_dropdown').change(function() {
        var fam = this.options[this.selectedIndex].value
        var fam_display = this.options[this.selectedIndex].text
        $('#preview_font').html(fam_display).css("font-family", fam);
        $('#font_family').val(fam).change();
      });

      $('div', '#position_opts').each(function(){
        this.addEventListener("mouseup", function(){
          var letter = this.id.replace('tool_pos','').charAt(0);
          svgCanvas.alignSelectedElements(letter, 'page');
        })
      });

      /*

      When a flyout icon is selected
        (if flyout) {
        - Change the icon
        - Make pressing the button run its stuff
        }
        - Run its stuff

      When its shortcut key is pressed
        - If not current in list, do as above
        , else:
        - Just run its stuff

      */

      // Unfocus text input when workarea is mousedowned.
      (function() {
        var inp;
        var unfocus = function() {
          $(inp).blur();
        }

        $('#svg_editor').find('button, select, input:not(#text)').focus(function() {
          inp = this;
          ui_context = 'toolbars';
          workarea.mousedown(unfocus);
        }).blur(function() {
          ui_context = 'canvas';
          workarea.unbind('mousedown', unfocus);
          // Go back to selecting text if in textedit mode
          if(svgCanvas.getMode() == 'textedit') {
            $('#text').focus();
          }
        });

      }());

      var clickSelect = function() {
        if (toolButtonClick('#tool_select')) {
          svgCanvas.setMode('select');
          $("#canvas_panel").hide();
        }
      };

      var clickFHPath = function() {
        if (toolButtonClick('#tool_fhpath')) {
          svgCanvas.setMode('fhpath');
          if(!$('#stroke_width').val() || $('#stroke_width').val() <= 0) {
            $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
            svgCanvas.setStrokeWidth(3.5);
          }
          $('#preset_sizes_panel_id').show();
          if( fhd_display_mode == 1){
              $('#force_remove_stroke_style').hide();
              // Reset dash if any.
              svgCanvas.setStrokeAttr('stroke-dasharray', 'none');
            /*  var dash = 'none';
              $('option', '#stroke_style').removeAttr('selected');
              $('#stroke_style option[value="'+ dash +'"]').attr("selected", "selected");
              $('#stroke_style').val(dash);
              $("#stroke_style_label").html($( "#stroke_style option:selected" ).text());*/
          }
        }
      };

      var clickLine = function() {
        if (toolButtonClick('#tool_line')) {
          svgCanvas.setMode('line');
          if(!$('#stroke_width').val() || $('#stroke_width').val() <= 0) {
              $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
              svgCanvas.setStrokeWidth(3.5);
            }
          $('#preset_sizes_panel_id').show();
          if( fhd_display_mode == 1){
              $('#force_remove_stroke_style').show();
          }

        }
      };

      var clickSquare = function(){
        if (toolButtonClick('#tool_square')) {
          svgCanvas.setMode('square');
          if(!$('#stroke_width').val() || $('#stroke_width').val() <= 0) {
              $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
              svgCanvas.setStrokeWidth(3.5);
            }
          $('#preset_sizes_panel_id').show();
        }
      };

      var clickRect = function(){
        if (toolButtonClick('#tool_rect')) {
          svgCanvas.setMode('rect');
          if(!$('#stroke_width').val() || $('#stroke_width').val() <= 0) {
              $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
              svgCanvas.setStrokeWidth(3.5);
            }
          $('#preset_sizes_panel_id').show();
        }
      };

      var clickFHRect = function(){
        if (toolButtonClick('#tool_fhrect')) {
          svgCanvas.setMode('fhrect');
          if(!$('#stroke_width').val() || $('#stroke_width').val() <= 0) {
              $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
              svgCanvas.setStrokeWidth(3.5);
            }
          $('#preset_sizes_panel_id').show();
        }
      };

      var clickCircle = function(){
        if (toolButtonClick('#tool_circle')) {
          svgCanvas.setMode('circle');
          if(!$('#stroke_width').val() || $('#stroke_width').val() <= 0) {
              $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
              svgCanvas.setStrokeWidth(3.5);
            }
          $('#preset_sizes_panel_id').show();
        }
      };

      var clickEllipse = function(){
        if (toolButtonClick('#tool_ellipse')) {
          svgCanvas.setMode('ellipse');
          if(!$('#stroke_width').val() || $('#stroke_width').val() <= 0) {
              $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
              svgCanvas.setStrokeWidth(3.5);
            }
          $('#preset_sizes_panel_id').show();
        }
      };

      var clickFHEllipse = function(){
        if (toolButtonClick('#tool_fhellipse')) {
          svgCanvas.setMode('fhellipse');
          if(!$('#stroke_width').val() || $('#stroke_width').val() <= 0) {
              $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
              svgCanvas.setStrokeWidth(3.5);
            }
          $('#preset_sizes_panel_id').show();
        }
      };

      var clickImage = function(){
        if (toolButtonClick('#tool_image')) {
          svgCanvas.setMode('image');
        }
      };

      var clickZoom = function(){
        if (toolButtonClick('#tool_zoom')) {
          svgCanvas.setMode('zoom');
        }
      };

      var dblclickZoom = function(){
        if (toolButtonClick('#tool_zoom')) {
          zoomImage();
          setSelectMode();
        }
      };

      var properlySourceSizeTextTextArea
       var clickText = function(){
        if (toolButtonClick('#tool_text')) {
          svgCanvas.setMode('text');
          $("#preset_sizes_panel_id").hide();

        }
      };

      var clickPath = function(){
        if (toolButtonClick('#tool_path')) {
          svgCanvas.setMode('path');
        }
      };

      var quicksizechange = function(e) {
          var size = $(this).data('size');
/*
          $('#stroke_width').val(size);
          svgCanvas.setStrokeWidth(size);
          $('#font_size').val(size);
          svgCanvas.setFontSize(size);
          svgCanvas.resetFontSize(size);
*/
        //  var penortext =  $(this).data('penortext');



          var currentMode = svgCanvas.getMode();
          var selectoelemtnto = svgCanvas.getSelectedElems();
          var tagnameselectedelem = '';
          if(selectoelemtnto[0]){
            tagnameselectedelem = selectoelemtnto[0].tagName;
          }

          $('#stroke_width').val(size);
          svgCanvas.setStrokeWidth(size);
/*
          if(currentMode == 'textedit' || tagnameselectedelem =='text') {
            $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
            svgCanvas.setStrokeWidth(3.5);
            $('#font_size').val(size);
            svgCanvas.setFontSize(size);
            svgCanvas.resetFontSize(size);
          } else {
            $('#stroke_width').val(size);
            svgCanvas.setStrokeWidth(size);
          }
*/
          // remove highlight from all others!
          $(".qtype_drawing_size_pen div").removeClass("qtype_drawing_active_selection");
          $("#"+this.id+" div").addClass("qtype_drawing_active_selection");
          //$('#qtype_drawing_tool_pensize1 div').addClass("qtype_drawing_active_selection");

      };

      //Function to convert rgb color to hex format
      var clickquickcolor = function(e) {
          var hexDigits = new Array
          ("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f");
          function rgb2hex(rgb) {
            rgb = rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
            return "#" + hex(rgb[1]) + hex(rgb[2]) + hex(rgb[3]);
           }
           function hex(x) {
             return isNaN(x) ? "00" : hexDigits[(x - x % 16) / 16] + hexDigits[x % 16];
           }
          // Stroke or fill? for pen or line it must be stroke!
          var picker = $(this).data('strokeorfill');
          var rgbcolor =  $(this).css('backgroundColor');
          var paint = null;
          var noUndo = true;
          var hexcolor =  rgb2hex(rgbcolor);
          paint = new $.jGraduate.Paint({alpha: 100, solidColor: hexcolor.substr(1)});

          //stroke
          Editor.paintBox['stroke'].setPaint(paint);
          svgCanvas.setColor('stroke', hexcolor, noUndo);

          //Text too!
          svgCanvas.setFontColor(hexcolor);

          var currentMode = svgCanvas.getMode();
          var selectoelemtnto = svgCanvas.getSelectedElems();
          var prgselected = selectoelemtnto;
          var tagnameselectedelem = '';
          if(selectoelemtnto[0]){
            tagnameselectedelem = selectoelemtnto[0].tagName;
          }

   //       Editor.paintBox['fill'].setPaint(paint);
    //      svgCanvas.setColor('fill', hexcolor, noUndo);

          /*
          if(currentMode == 'select' && tagnameselectedelem =='path') {
          xpaint = new $.jGraduate.Paint();
            Editor.paintBox['fill'].setPaint(xpaint);
            svgCanvas.setColor('fill', 'none', noUndo);
          } else {
            //fill
              if(prgselected.length != 0) {
                  Editor.paintBox['fill'].setPaint(paint);
                  svgCanvas.setColor('fill', hexcolor, noUndo);
              }

          }
*/
          if (hexcolor != 'none' && svgCanvas.getStrokeOpacity() != 1) {
            $('#group_opacity').val(100);
            svgCanvas.setPaintOpacity('stroke', 1.0);
          }
           // $("#tool_fhpath").css("background-color", rgbcolor);
          // remove highlight from all others!
          $(".qtype_drawing_color_divsquare").removeClass("qtype_drawing_selectedcolor");
          $(".qtype_drawing_color_pallette").removeClass("qtype_drawing_selectedcolor");
          $("#"+this.id).addClass("qtype_drawing_selectedcolor");

      };

      var quickcolorpallette = function(e){
        var picker = $(this).data('strokeorfill');
        var anticipateddiv = '#' + picker + '_color';
        //picker
        colorPicker($(anticipateddiv));
        $(".qtype_drawing_color_divsquare").removeClass("qtype_drawing_selectedcolor");
        $(".qtype_drawing_color_pallette").removeClass("qtype_drawing_selectedcolor");
      //  $("#"+this.id).addClass("qtype_drawing_selectedcolor");


        }
      // End Added by Amr.

      // Delete is a contextual tool that only appears in the ribbon if
      // an element has been selected
      var deleteSelected = function() {
        Editor.forcesaving = 1;
        if (selectedElement != null || multiselected) {
          svgCanvas.deleteSelectedElements();
        }
        if (path.getNodePoint()) {
          path.deletePathNode();
        }
        $("#canvas_panel").hide();
        setSelectMode();
      };

      var cutSelected = function() {
        if (selectedElement != null || multiselected) {
          flash($('#edit_menu'));
          svgCanvas.cutSelectedElements();
        }
      };

      var copySelected = function() {
        if (selectedElement != null || multiselected) {
          flash($('#edit_menu'));
          svgCanvas.copySelectedElements();
        }
      };

      var pasteSelected = function() {
        flash($('#edit_menu'));
        var zoom = svgCanvas.getZoom();
        var x = (workarea[0].scrollLeft + workarea.width()/2)/zoom  - svgCanvas.contentW;
        var y = (workarea[0].scrollTop + workarea.height()/2)/zoom  - svgCanvas.contentH;
        svgCanvas.pasteElements('point', x, y);
      }

      var moveToTopSelected = function() {
        if (selectedElement != null) {
          flash($('#object_menu'));
          svgCanvas.moveToTopSelectedElement();
        }
      };

      var moveToBottomSelected = function() {
        if (selectedElement != null) {
          flash($('#object_menu'));
          svgCanvas.moveToBottomSelectedElement();
        }
      };

      var moveUpSelected = function() {
        if (selectedElement != null) {
        flash($('#object_menu'));
          svgCanvas.moveUpDownSelected("Up");
        }
      };

      var moveDownSelected = function() {
        if (selectedElement != null) {
          flash($('#object_menu'));
          svgCanvas.moveUpDownSelected("Down");
        }
      };

      var moveUpDownSelected = function(dir) {
        if (selectedElement != null) {
          flash($('#object_menu'));
          svgCanvas.moveUpDownSelected(dir);
        }
      };

      var convertToPath = function() {
        if (selectedElement != null) {
          svgCanvas.convertToPath();
          var elems = svgCanvas.getSelectedElems()
          svgCanvas.selectorManager.requestSelector(elems[0]).reset(elems[0])
          svgCanvas.selectorManager.requestSelector(elems[0]).selectorRect.setAttribute("display", "none");
          svgCanvas.setMode("pathedit")
          path.toEditMode(elems[0]);
          svgCanvas.clearSelection();
          updateContextPanel();
        }
      }

      var reorientPath = function() {
        if (selectedElement != null) {
          path.reorient();
        }
      }

      var makeHyperlink = function() {
        if (selectedElement != null || multiselected) {
          $.prompt("Enter the new hyperlink URL", "http://", function(url) {
            if(url) svgCanvas.makeHyperlink(url);
          });
        }
      }

      var moveSelected = function(dx,dy) {
        if (selectedElement != null || multiselected) {
          if(curConfig.gridSnapping) {
            // Use grid snap value regardless of zoom level
            var multi = svgCanvas.getZoom() * curConfig.snappingStep;
            dx *= multi;
            dy *= multi;
          }
          $('input').blur()
          svgCanvas.moveSelectedElements(dx,dy);
        }
      };

      var linkControlPoints = function() {
      //  var linked = document.getElementById('tool_node_link').checked;
      //  path.linkControlPoints(linked);
      }

      var clonePathNode = function() {
        if (path.getNodePoint()) {
          path.clonePathNode();
        }
      };

      var deletePathNode = function() {
        if (path.getNodePoint()) {
          path.deletePathNode();
        }
      };

      var addSubPath = function() {
        var button = $('#tool_add_subpath');
        var sp = !button.hasClass('push_button_pressed');
        if (sp) {
          button.addClass('push_button_pressed').removeClass('tool_button');
        } else {
          button.removeClass('push_button_pressed').addClass('tool_button');
        }

        path.addSubPath(sp);

      };

      var opencloseSubPath = function() {
        path.opencloseSubPath();
      }

      var selectNext = function() {
        svgCanvas.cycleElement(1);
      };

      var selectPrev = function() {
        svgCanvas.cycleElement(0);
      };

      var rotateSelected = function(cw,step) {
        if (selectedElement == null || multiselected) return;
        if(!cw) step *= -1;
        var new_angle = $('#angle').val()*1 + step;
        svgCanvas.setRotationAngle(new_angle);
        updateContextPanel();
      };

      var clickClear = function(){
        var dims = curConfig.dimensions;
        $.confirm(qtype_drawing_str_newconfirmationmsg, function(ok) {
          if(!ok) return;
          setSelectMode();
          svgCanvas.deleteSelectedElements();
          svgCanvas.clear();
          svgCanvas.setResolution(dims[0], dims[1]);
          updateCanvas(true);
        //  createBackground();
          svgCanvas.setFHDBackground();
          zoomImage();
          updateContextPanel();
          prepPaints();
          svgCanvas.runExtensions('onNewDocument');
        });
      };

      var clickBold = function(){
        svgCanvas.setBold( !svgCanvas.getBold() );
        updateContextPanel();
      };

      var clickItalic = function(){
        svgCanvas.setItalic( !svgCanvas.getItalic() );
        updateContextPanel();
      };

      var clickExport = function() {
        // Open placeholder window (prevents popup)
        if(!customHandlers.pngsave)  {
          exportWindow = window.open("data:text/html;charset=utf-8,<title>Loading image, please wait...<\/title><h1>" + str + "<\/h1>");
        }

        if(window.canvg) {
          svgCanvas.rasterExport();
        } else {
          $.getScript('lib/canvg/rgbcolor.js', function() {
            $.getScript('lib/canvg/canvg.js', function() {
              svgCanvas.rasterExport();
            });
          });
        }
      }

      // by default, svgCanvas.open() is a no-op.
      // it is up to an extension mechanism (opera widget, etc)
      // to call setCustomHandlers() which will make it do something
      var clickOpen = function(){
        svgCanvas.open();
      };
      var clickImport = function(){
      };

      var flash = function($menu){
        var menu_title = $menu.prev();
        menu_title.css({
          "background": "white",
          "color": "black"
        });
        setTimeout(function(){menu_title.removeAttr("style")}, 200);
      }

      var clickUndo = function(){
        if (undoMgr.getUndoStackSize() > 0) {
          flash($('#edit_menu'));

          undoMgr.undo();
          d3.select("#erase").selectAll("*").remove();
          $('#canvas_panel').hide();
          methodDraw.SaveDrawingToMoodle();

          setSelectMode();
          $('#zoom_panel').show();

        }
      };
      var clickFill = function(){
        if(!$('#tool_bucket').hasClass('disabled')){
          colorPicker($('#fill_color'));
        }
      };
      var clickRedo = function(){
        if (undoMgr.getRedoStackSize() > 0) {
          flash($('#edit_menu'));
          undoMgr.redo();
          d3.select("#erase").selectAll("*").remove();
          $('#canvas_panel').hide();
          methodDraw.SaveDrawingToMoodle();
          setSelectMode();
          $('#zoom_panel').show();
        }
      };

      var clickGroup = function(){
        // group
        if (multiselected) {
          flash($('#object_menu'));
          svgCanvas.groupSelectedElements();
        }
        // ungroup
        else if(selectedElement){
          flash($('#object_menu'));
          svgCanvas.ungroupSelectedElement();
        }
      };

      var clickClone = function(){
        flash($('#edit_menu'));
        svgCanvas.cloneSelectedElements(20,20);
      };

      var clickAlign = function() {
        var letter = this.id.replace('tool_align','').charAt(0);
        svgCanvas.alignSelectedElements(letter, $('#align_relative_to').val());
      };

      var clickSwitch = function() {
        var stroke_rect = document.querySelector('#tool_stroke rect');
        $("#tool_stroke").toggleClass('active')
        $("#tool_fill").toggleClass('active')
        var fill_rect = document.querySelector('#tool_fill rect');
        var fill_color = fill_rect.getAttribute("fill");
        var stroke_color = stroke_rect.getAttribute("fill");
        var stroke_opacity = parseFloat(stroke_rect.getAttribute("stroke-opacity"));
        if (isNaN(stroke_opacity)) {stroke_opacity = 100;}
        var fill_opacity = parseFloat(fill_rect.getAttribute("fill-opacity"));
        if (isNaN(fill_opacity)) {fill_opacity = 100;}
        var stroke = getPaint(stroke_color, stroke_opacity, "stroke");
        var fill = getPaint(fill_color, fill_opacity, "fill");
        Editor.paintBox.fill.setPaint(stroke, true);
        Editor.paintBox.stroke.setPaint(fill, true);

      };

      var zoomImage = function(multiplier) {
        var res = svgCanvas.getResolution();
        multiplier = multiplier?res.zoom * multiplier:1;
    //    setResolution(res.w * multiplier, res.h * multiplier, true);
        $('#zoom').val(multiplier * 100);
        svgCanvas.setZoom(multiplier);
        zoomDone();
        updateCanvas(true);
      };
      var zoomDone = function() {
    //    updateBgImage();
        updateWireFrame();
        //updateCanvas(); // necessary?
      }

      var clickWireframe = function() {
        flash($('#view_menu'));
        var wf = !$('#tool_wireframe').hasClass('push_button_pressed');
        if (wf)
          $('#tool_wireframe').addClass('push_button_pressed');
        else
          $('#tool_wireframe').removeClass('push_button_pressed');
        workarea.toggleClass('wireframe');

        if(supportsNonSS) return;
        var wf_rules = $('#wireframe_rules');
        if(!wf_rules.length) {
          wf_rules = $('<style id="wireframe_rules"><\/style>').appendTo('head');
        } else {
          wf_rules.empty();
        }

        updateWireFrame();
      }

      var clickSnapGrid = function() {
        flash($('#view_menu'));
        var sg = !$('#tool_snap').hasClass('push_button_pressed');
        if (sg)
          $('#tool_snap').addClass('push_button_pressed');
        else
          $('#tool_snap').removeClass('push_button_pressed');
          curConfig.gridSnapping = sg;

        var eoptions = {gridSnapping: sg};
        svgCanvas.setConfig(eoptions);
      }

      var minimizeModal = function() {

        if (window.self != window.top) { //we're in an iframe
        //  top.exit_fullscreen();
        $("#text_dialog_jq").dialog("close");
    //  $( "#textedit_dialog" ).dialog().close();

        }
      }
      var clickRulers = function() {
        flash($('#view_menu'));
        var rulers = !$('#tool_rulers').hasClass('push_button_pressed');
        if (rulers) {
          $('#tool_rulers').addClass('push_button_pressed');
          $('#show_rulers').attr("checked", true);
          curConfig.showRulers = true;
        }
        else {
          $('#tool_rulers').removeClass('push_button_pressed');
          $('#show_rulers').attr("checked", false);
          curConfig.showRulers = false;
        }
        $('#rulers').toggle(!!curConfig.showRulers)
      }

      var updateWireFrame = function() {
        // Test support
        if(supportsNonSS) return;

        var rule = "#workarea.wireframe #svgcontent * { stroke-width: " + 1/svgCanvas.getZoom() + "px; }";
        $('#wireframe_rules').text(workarea.hasClass('wireframe') ? rule : "");
      }

      var showSourceEditor = function(e, forSaving){
        if (editingsource) return;
        flash($('#view_menu'));
        editingsource = true;

        $('#save_output_btns').toggle(!!forSaving);
        $('#tool_source_back').toggle(!forSaving);

        var str = orig_source = svgCanvas.getSvgString();
        $('#svg_source_textarea').val(str);
        $('#svg_source_editor').fadeIn();
        $('#svg_source_textarea').focus().select();
      };

      var clickSave = function(){
        flash($('#file_menu'));
        // In the future, more options can be provided here
        var saveOpts = {
          'images': curPrefs.img_save,
          'round_digits': 6
        }
        svgCanvas.save(saveOpts);
      };

      Editor.updateAnnotationDetails = function(){
          $.ajax({
              url: 'loadannotationdetails.php',
              method: "GET",
              data: { id: questionid, sesskey: sesskey, stid: stid, attemptid: attemptid, attemptcount: attemptcount},
              cache: false,
              success: function(array_annotations) {
                  if(array_annotations.works == 'OK'){
                     $('#teacherannotations').html(array_annotations.result);
                     $( ".tool_showannotation" ).on( "click", clickShowannotation );
                     $( "#showoriginalanswer" ).on( "click", clickShowannotation );
                  }
              }
            });
      }
      var clickSaveannotation = function(){

          $.ajax({
              url: 'saveannotation.php',
              method: "POST",
              data: { id: questionid, sesskey: sesskey, stid: stid, attemptid: attemptid, attemptcount: attemptcount, annotation: getCurrentDrawingSVG()},
              cache: false,
              success: function(str) {
                  if(str == 'OK'){
                      $.anottationalert(qtype_drawing_str_annotationsaved, str);
                      // Load last change.
                      methodDraw.updateAnnotationDetails();

                  } else {
                      $.anottationalert("ERROR: " + JSON.stringify(str), str);
                  }

              },
              error: function(xhr, stat, err) {
                if(xhr.status != 404 && xhr.responseText) {
                    $.anottationalert("Error: "+ xhr.responseText );
                } else {
                    $.anottationalert("Unable to save annotation" + ": \n"+err);
                }
              }
            });
        };


        var clickShowannotation = function(){
            var originalbgimg = $('#qtype_drawing_original_bg_id_'+attemptid+uniquefieldnameattemptid, window.parent.document).val();

            var originalstdanswer = $('#qtype_drawing_original_stdanswer_id_'+attemptid+uniquefieldnameattemptid, window.parent.document).val();
            var imgwidth = $('#qtype_drawing_background_image_width_'+attemptid+uniquefieldnameattemptid, window.parent.document).val();
            var imgheight = $('#qtype_drawing_background_image_height_'+attemptid+uniquefieldnameattemptid, window.parent.document).val();
            var backgroundtype = $('#qtype_drawing_real_org_bg_'+ attemptid+uniquefieldnameattemptid, window.parent.document).val();


            if($(this).data("type") == 1){
                if(backgroundtype == 'svg'){
                    var getresult = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="baseSVGannotationView1" width="'+imgwidth+'" height="'+imgheight+'">' + originalbgimg + originalstdanswer + '</svg>';
                }else{
                    var getresult = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="baseSVGannotationView2" width="'+imgwidth+'" height="'+imgheight+'">' + '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"  width="'+imgwidth+'" height="'+imgheight+'"><image xlink:href="'+originalbgimg+'" width="'+imgwidth+'" height="'+imgheight+'" preserveAspectRatio="none"></image></svg>' + originalstdanswer + '</svg>';
                }

                $.anottationdrawing(getresult, null,null, 1, questionid);
                return;
            }else if($(this).data("type") == 2){
                $.ajax({
                    url: 'getannotation.php',
                    method: "GET",
                    data: { id: questionid, sesskey: sesskey, stid: stid, attemptcount: attemptcount, attemptid: attemptid, annotationid: $(this).data("annotationid"), type: $(this).data("type")},
                    cache: false,
                    success: function(str) {
                        if(str.result == 'OK'){
                            if(backgroundtype == 'svg'){
                                var getresult = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="baseSVGannotationView3" width="'+imgwidth+'" height="'+imgheight+'">' + originalbgimg + originalstdanswer + str.drawing + '</svg>';
                            }else{
                                var getresult = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="baseSVGannotationView4" width="'+imgwidth+'" height="'+imgheight+'">' + '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"  width="'+imgwidth+'" height="'+imgheight+'"><image xlink:href="'+originalbgimg+'" width="'+imgwidth+'" height="'+imgheight+'" preserveAspectRatio="none"></image></svg>'  + originalstdanswer + str.drawing + '</svg>';

                            }
                            $.anottationdrawing(getresult, null,null, 1, questionid);

                        } else {
                            $.anottationdrawing("ERROR: " + JSON.stringify(str), str);
                        }

                    },
                    error: function(xhr, stat, err) {
                      if(xhr.status != 404 && xhr.responseText) {
                          $.anottationdrawing("Error: "+ xhr.responseText );
                      } else {
                          $.anottationdrawing("Unable to get annotation" + ": \n"+err);
                      }
                    }
                  });

                 return;
            }

            $.ajax({
                url: 'getannotation.php',
                method: "GET",
                data: { id: questionid, sesskey: sesskey, stid: stid, attemptcount: attemptcount, attemptid: attemptid, annotationid: $(this).data("annotationid"), type: $(this).data("type")},
                cache: false,
                success: function(str) {
                    if(str.result == 'OK'){
                        if(backgroundtype == 'svg'){
                            var getresult = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="baseSVGannotationView5" width="'+imgwidth+'" height="'+imgheight+'">' + originalbgimg + originalstdanswer + str.drawing + '</svg>';
                        }else{
                            var getresult = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="baseSVGannotationView6" width="'+imgwidth+'" height="'+imgheight+'">' + '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"  width="'+imgwidth+'" height="'+imgheight+'"><image xlink:href="'+originalbgimg+'" width="'+imgwidth+'" height="'+imgheight+'" preserveAspectRatio="none"></image></svg>' + originalstdanswer + str.drawing  + '</svg>';

                        }
                        $.anottationdrawing(getresult, str, null,null, 1, questionid);
                    } else {
                        $.anottationdrawing("ERROR: " + JSON.stringify(str), str);
                    }

                },
                error: function(xhr, stat, err) {
                  if(xhr.status != 404 && xhr.responseText) {
                      $.anottationdrawing("Error: "+ xhr.responseText );
                  } else {
                      $.anottationdrawing("Unable to get annotation" + ": \n"+err);
                  }
                }
              });
          };


      var saveSourceEditor = function(){
        if (!editingsource) return;

        var saveChanges = function() {
          svgCanvas.clearSelection();
          hideSourceEditor();
          zoomImage();
          prepPaints();
        }

        if (!svgCanvas.setSvgString($('#svg_source_textarea').val())) {
          $.confirm(qtype_drawing_str_parsingerror, function(ok) {
            if(!ok) return false;
            saveChanges();
          });
        } else {
          saveChanges();
        }
        setSelectMode();
      };

      function setBackground(color, url) {
//        if(color == curPrefs.bkgd_color && url == curPrefs.bkgd_url) return;
        $.pref('bkgd_color', color);
        $.pref('bkgd_url', url);

        // This should be done in svgcanvas.js for the borderRect fill
        svgCanvas.setBackground(color, url);
      }

      var setIcon = Editor.setIcon = function(elem, icon_id, forcedSize) {
        var icon = (typeof icon_id === 'string') ? $.getSvgIcon(icon_id, true) : icon_id.clone();
        if(!icon) {
          console.log('NOTE: Icon image missing: ' + icon_id);
          return;
        }

        $(elem).find("img").replaceWith(icon);
      }

      var ua_prefix;
      (ua_prefix = function() {
        var regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;
        var someScript = document.getElementsByTagName('script')[0];
        for(var prop in someScript.style) {
          if(regex.test(prop)) {
            // test is faster than match, so it's better to perform
            // that on the lot and match only when necessary
            return prop.match(regex)[0];
          }
        }

        // Nothing found so far?
        if('WebkitOpacity' in someScript.style) return 'Webkit';
        if('KhtmlOpacity' in someScript.style) return 'Khtml';

        return '';
      }());

      var scaleElements = function(elems, scale) {
        var prefix = '-' + ua_prefix.toLowerCase() + '-';

        var sides = ['top', 'left', 'bottom', 'right'];

        elems.each(function() {

          var el = $(this);

          var w = el.outerWidth() * (scale - 1);
          var h = el.outerHeight() * (scale - 1);
          var margins = {};

          for(var i = 0; i < 4; i++) {
            var s = sides[i];

            var cur = el.data('orig_margin-' + s);
            if(cur == null) {
              cur = parseInt(el.css('margin-' + s));
              // Cache the original margin
              el.data('orig_margin-' + s, cur);
            }
            var val = cur * scale;
            if(s === 'right') {
              val += w;
            } else if(s === 'bottom') {
              val += h;
            }

            el.css('margin-' + s, val);
//            el.css('outline', '1px solid red');
          }
        });
      }

      var setIconSize = Editor.setIconSize = function(size, force) {
        if(size == curPrefs.size && !force) return;
//        return;
//        var elems = $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open');

        var sel_toscale = '#tools_top .toolset, #editor_panel > *, #history_panel > *,\
        #main_button, #tools_left > *, #path_node_panel > *, #multiselected_panel > *,\
        #g_panel > *, #tool_font_size > *, .tools_flyout';

        var elems = $(sel_toscale);

        var scale = 1;

        if(typeof size == 'number') {
          scale = size;
        } else {
          var icon_sizes = { s:.75, m:1, l:1.25, xl:1.5 };
          scale = icon_sizes[size];
        }

        Editor.tool_scale = tool_scale = scale;

        setFlyoutPositions();
        var hidden_ps = elems.parents(':hidden');
        hidden_ps.css('visibility', 'hidden').show();
        scaleElements(elems, scale);
        hidden_ps.css('visibility', 'visible').hide();

        var rule_elem = $('#tool_size_rules');
        if(!rule_elem.length) {
          rule_elem = $('<style id="tool_size_rules"><\/style>').appendTo('head');
        } else {
          rule_elem.empty();
        }

        if(size != 'm') {
          var style_str = '';
          $.each(cssResizeRules, function(selector, rules) {
            selector = '#svg_editor ' + selector.replace(/,/g,', #svg_editor');
            style_str += selector + '{';
            $.each(rules, function(prop, values) {
              if(typeof values === 'number') {
                var val = (values * scale) + 'px';
              } else if(values[size] || values.all) {
                var val = (values[size] || values.all);
              }
              style_str += (prop + ':' + val + ';');
            });
            style_str += '}';
          });
          //this.style[ua_prefix + 'Transform'] = 'scale(' + scale + ')';
          var prefix = '-' + ua_prefix.toLowerCase() + '-';
          style_str += (sel_toscale + '{' + prefix + 'transform: scale(' + scale + ');}'
          + ' #svg_editor div.toolset .toolset {' + prefix + 'transform: scale(1); margin: 1px !important;}' // Hack for markers
          + ' #svg_editor .ui-slider {' + prefix + 'transform: scale(' + (1/scale) + ');}' // Hack for sliders
          );
          rule_elem.text(style_str);
        }

        setFlyoutPositions();
      }

      var cancelOverlays = function() {
        $('#dialog_box').hide();
        if (!editingsource && !docprops && !preferences) {
          if(cur_context) {
            svgCanvas.leaveContext();
          }
          return;
        };

        if (editingsource) {
          if (orig_source !== $('#svg_source_textarea').val()) {
            $.confirm(qtype_drawing_str_ignorechanges, function(ok) {
              if(ok) hideSourceEditor();
            });
          } else {
            hideSourceEditor();
          }
        }
        else if (docprops) {
          hideDocProperties();
        } else if (preferences) {
          hidePreferences();
        }
        resetScrollPos();
      };

      var hideSourceEditor = function(){
        $('#svg_source_editor').hide();
        editingsource = false;
        $('#svg_source_textarea').blur();
      };

      var win_wh = {width:$(window).width(), height:$(window).height()};

      var resetScrollPos = $.noop, curScrollPos;

      /* Fix for Issue 781: Drawing area jumps to top-left corner on window resize (IE9)
      if(svgedit.browser.isIE()) {
        (function() {
          resetScrollPos = function() {
            if(workarea[0].scrollLeft === 0
            && workarea[0].scrollTop === 0) {
              workarea[0].scrollLeft = curScrollPos.left;
              workarea[0].scrollTop = curScrollPos.top;
            }
          }

          curScrollPos = {
            left: workarea[0].scrollLeft,
            top: workarea[0].scrollTop
          };

          $(window).resize(resetScrollPos);
          methodDraw.ready(function() {
            // TODO: Find better way to detect when to do this to minimize
            // flickering effect
            setTimeout(function() {
              resetScrollPos();
            }, 500);
          });

          workarea.scroll(function() {
            curScrollPos = {
              left: workarea[0].scrollLeft,
              top: workarea[0].scrollTop
            };
          });
        }());
      }*/

      $(window).resize(function(evt) {
          updateCanvas();
      });

      (function() {
        workarea.scroll(function() {
          // TODO:  jQuery's scrollLeft/Top() wouldn't require a null check
          if ($('#ruler_x').length != 0) {
            $('#ruler_x')[0].scrollLeft = workarea[0].scrollLeft;
          }
          if ($('#ruler_y').length != 0) {
            $('#ruler_y')[0].scrollTop = workarea[0].scrollTop;
          }
        });

      }());

      $('#url_notice').click(function() {
        $.alert(this.title);
      });

      $('#change_image_url').click(promptImgURL);

      function promptImgURL() {
        var curhref = svgCanvas.getHref(selectedElement);
        curhref = curhref.indexOf("data:") === 0?"":curhref;
        $.prompt("Enter the new image URL", curhref, function(url) {
          if(url) setImageURL(url);
        });
      }

      // TODO: go back to the color boxes having white background-color and then setting
      //       background-image to none.png (otherwise partially transparent gradients look weird)
      var colorPicker = function(elem) {
        var picker = elem[0].id == 'stroke_color' ? 'stroke' : 'fill';
        var is_background = elem[0].id == "canvas_color"
        if (is_background) picker = 'canvas'
//        var opacity = (picker == 'stroke' ? $('#stroke_opacity') : $('#fill_opacity'));
        var paint = Editor.paintBox[picker].paint;

        if(!paint.type || paint.type == 'none'){
          paint.type = 'solidColor';
          paint.solidColor = 'none';
        }
        var title = (picker == 'stroke' ? 'Pick a Stroke Paint and Opacity' : 'Pick a Fill Paint and Opacity');
        var was_none = false;
       // var pos = is_background ? {'right': 175, 'top': 50} : {'left': 50, 'bottom': 50}
        var h =  $("#workarea").height();//res.h;
        var w = $("#workarea").width();//res.w,
        var top = Math.max(h / 2 - $("#color_picker").height()  / 2, 0);
        var left = Math.max(w / 2 - $("#color_picker").width() / 2, 0);
        var pos = {'left': left, 'top': top};

        $("#color_picker")
          .draggable({cancel:'.jGraduate_tabs, .jGraduate_colPick, .jGraduate_gradPick, .jPicker', containment: 'window'})
          .removeAttr("style")
          .css(pos)
          .jGraduate(
          {
            paint: paint,
            window: { pickerTitle: title },
            images: { clientPath: curConfig.jGraduatePath },
            newstop: 'inverse'
          },
          function(p) {
            paint = new $.jGraduate.Paint(p);

            Editor.paintBox[picker].setPaint(paint);
            svgCanvas.setPaint(picker, paint);

            $('#color_picker').hide();
          },
          function(p) {
            $('#color_picker').hide();
          });
      };

      var PaintBox = function(container, type) {
        var background = document.getElementById("canvas_background");
        var cur = {color: "fff", opacity: 1}
        if (type == "stroke") cur = curConfig['initStroke'];
        if (type == "fill") cur = curConfig['initFill'];
        if (type == "canvas" && background) {
              var rgb = background.getAttribute("fill").match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
              if (rgb) {
                var hex =   ("0" + parseInt(rgb[1],10).toString(16)).slice(-2) +
                              ("0" + parseInt(rgb[2],10).toString(16)).slice(-2) +
                              ("0" + parseInt(rgb[3],10).toString(16)).slice(-2);
                cur = {color: hex, opacity: 1}
              }
        }

        // set up gradients to be used for the buttons
        var svgdocbox = new DOMParser().parseFromString(
          '<svg xmlns="http://www.w3.org/2000/svg"><rect width="100%" height="100%"\
          fill="#' + cur.color + '" opacity="' + cur.opacity + '"/>\
          <defs><linearGradient id="gradbox_"/></defs></svg>', 'text/xml');
        var docElem = svgdocbox.documentElement;

        docElem = $(container)[0].appendChild(document.importNode(docElem, true));
        if (type === 'canvas') docElem.setAttribute('width',60.5);
        else docElem.setAttribute('width',"100%");

        this.rect = docElem.firstChild;
        this.defs = docElem.getElementsByTagName('defs')[0];
        this.grad = this.defs.firstChild;
        this.paint = new $.jGraduate.Paint({solidColor: cur.color});
        this.type = type;

        this.setPaint = function(paint, apply, noUndo) {
          this.paint = paint;
          var fillAttr = "none";
          var ptype = paint.type;
          var opac = paint.alpha / 100;
          switch ( ptype ) {
            case 'solidColor':
              fillAttr = (paint[ptype] == 'none' || paint[ptype] == 'one') ? 'none' : "#" + paint[ptype];
              break;
            case 'linearGradient':
            case 'radialGradient':
              this.defs.removeChild(this.grad);
              this.grad = this.defs.appendChild(paint[ptype]);
              var id = this.grad.id = 'gradbox_' + this.type;
              fillAttr = "url(#" + id + ')';
          }
          this.rect.setAttribute('fill', fillAttr);
          this.rect.setAttribute('opacity', opac);
/*
          if(this.type == 'stroke'){
            curConfig.globalstrokecolor = fillAttr;
          } else {
              curConfig.globalfillcolor = fillAttr;
          }*/
      //    var whichcolortypepaint = 'global' + this.type + 'color';
        //  curConfig.whichcolortypepaint = fillAttr;
      //    curConfig.globalstrokecolor = fillAttr;


      var stroke_rect = document.querySelector('#tool_stroke rect');
      var fill_rect = document.querySelector('#tool_fill rect');
      var fill_color = fill_rect.getAttribute("fill");
      var stroke_color = stroke_rect.getAttribute("fill");

      if(this.type == 'stroke'){
        $("#qtype_drawing_tool_color14 > img").css("outline", "1px solid "+stroke_color);//.css("outline", "1px "+curConfig.globalstrokecolor+" solid!important");


      } else {
        $("#qtype_drawing_tool_color15 > img").css("background-color", fill_color);//.css("outline", "1px "+curConfig.globalstrokecolor+" solid!important");

      }


          if (this.type == "canvas") {
            //recache background in case it changed
            var background = document.getElementById("canvas_background");
            if (background) {
              res = svgCanvas.getResolution()
              background.setAttribute("x", -1);
              background.setAttribute("y", -1);
              background.setAttribute("width", res.w + 2); //res.w+2
              background.setAttribute("height", res.h + 2); //res.h+2
              if (fillAttr.indexOf("url") == -1) background.setAttribute('fill', fillAttr)
            }
            else {
             //   createBackground(fillAttr);
                }
          }

          if(apply) {
            svgCanvas.setColor(this.type, fillAttr, true);
            svgCanvas.setPaintOpacity(this.type, opac, true);
          }



        }

        this.update = function(apply) {
          if(!selectedElement) return;
          var type = this.type;
          switch ( selectedElement.tagName ) {
          case 'use':
          case 'image':
          case 'foreignObject':
            // These elements don't have fill or stroke, so don't change
            // the current value
            return;
          case 'g':
          case 'a':
            var gPaint = null;

            var childs = selectedElement.getElementsByTagName('*');
            for(var i = 0, len = childs.length; i < len; i++) {
              var elem = childs[i];
              var p = elem.getAttribute(type);
              if(i === 0) {
                gPaint = p;
              } else if(gPaint !== p) {
                gPaint = null;
                break;
              }
            }
            if(gPaint === null) {
              // No common color, don't update anything
              var paintColor = null;
              return;
            }
            var paintColor = gPaint;

            var paintOpacity = 1;
            break;
          default:
            var paintOpacity = parseFloat(selectedElement.getAttribute(type + "-opacity"));
            if (isNaN(paintOpacity)) {
              paintOpacity = 1.0;
            }

            var defColor = type === "fill" ? "black" : "none";
            var paintColor = selectedElement.getAttribute(type) || defColor;
          }
          if(apply) {
            svgCanvas.setColor(type, paintColor, true);
            svgCanvas.setPaintOpacity(type, paintOpacity, true);
          }

          paintOpacity *= 100;

          var paint = getPaint(paintColor, paintOpacity, type);
          // update the rect inside #fill_color/#stroke_color
          this.setPaint(paint);
        }

        this.prep = function() {
          var ptype = this.paint.type;

          switch ( ptype ) {
            case 'linearGradient':
            case 'radialGradient':
              var paint = new $.jGraduate.Paint({copy: this.paint});
              svgCanvas.setPaint(type, paint);
          }
        }
      };

      Editor.paintBox.fill = new PaintBox('#fill_color', 'fill');
      Editor.paintBox.stroke = new PaintBox('#stroke_color', 'stroke');
      Editor.paintBox.canvas = new PaintBox('#canvas_color', 'canvas');

      $('#stroke_width').val(curConfig.initStroke.width);
      $('#group_opacity').val(curConfig.initOpacity * 100);

      // Use this SVG elem to test vectorEffect support
      var test_el = Editor.paintBox.fill.rect.cloneNode(false);
      test_el.setAttribute('style','vector-effect:non-scaling-stroke');
      var supportsNonSS = (test_el.style.vectorEffect === 'non-scaling-stroke');
      test_el.removeAttribute('style');
      var svgdocbox = Editor.paintBox.fill.rect.ownerDocument;
      // Use this to test support for blur element. Seems to work to test support in Webkit
      var blur_test = svgdocbox.createElementNS('http://www.w3.org/2000/svg', 'feGaussianBlur');
      if(typeof blur_test.stdDeviationX === "undefined") {
        $('#tool_blur').hide();
      }
      $(blur_test).remove();



      // Test for embedImage support (use timeout to not interfere with page load)
      setTimeout(function() {
        svgCanvas.embedImage('images/placeholder.svg', function(datauri) {
          if(!datauri) {
            // Disable option
            $('#image_save_opts [value=embed]').attr('disabled','disabled');
            $('#image_save_opts input').val(['ref']);
            curPrefs.img_save = 'ref';
            $('#image_opt_embed').css('color','#666').attr('title', "Feature not supported");
          }
        });
      },1000);

      $('#tool_fill').click(function(){
        if ($('#tool_fill').hasClass('active')) {
          colorPicker($('#fill_color'));
        }
        else {
          $('#tool_fill').addClass('active');
          $("#tool_stroke").removeClass('active');
        }
      });

      $('#tool_stroke').on("click", function(){
        if ($('#tool_stroke').hasClass('active')) {
          colorPicker($('#stroke_color'));
        }
        else {
          $('#tool_stroke').addClass('active');
          $("#tool_fill").removeClass('active');
        }
      });

      $('#tool_canvas').on("click touchstart", function(){
          colorPicker($('#canvas_color'));
      });

      $('#tool_stroke').on("touchstart", function(){
          $('#tool_stroke').addClass('active');
          $("#tool_fill").removeClass('active');
          colorPicker($('#stroke_color'));
      });

      $('#tool_fill').on("touchstart", function(){
          $('#tool_fill').addClass('active');
          $("#tool_stroke").removeClass('active');
          colorPicker($('#fill_color'));
      });

      $('#zoom_select').change(function() {
        var val = this.options[this.selectedIndex].text;
        val = val.split("%")[0];
        $("#zoom").val(val).trigger("change");
      });

      $('.push_button').mousedown(function() {
        if (!$(this).hasClass('disabled')) {
          $(this).addClass('push_button_pressed').removeClass('push_button');
        }
      }).mouseout(function() {
        $(this).removeClass('push_button_pressed').addClass('push_button');
      }).mouseup(function() {
        $(this).removeClass('push_button_pressed').addClass('push_button');
      });




      $("#paths").hover(
              function () {
                   curtitle = $(this).children(".grouptitle").text();
                   $(this).children(".grouptitle").text('');
              },
              function () {
                  $(this).children(".grouptitle").text(curtitle);
              });


    //  function changeResolution(x,y) {
    //    var zoom = svgCanvas.getResolution().zoom;
    //    setResolution(x * zoom, y * zoom);
    //  }

      var centerCanvas = function() {
        // this centers the canvas vertically in the workarea (horizontal handled in CSS)
        workarea.css('line-height', workarea.height() + 'px');
      };

      $(window).bind('load resize', centerCanvas);

      function stepFontSize(elem, step) {
        var orig_val = elem.value-0;
        var sug_val = orig_val + step;
        var increasing = sug_val >= orig_val;
        if(step === 0) return orig_val;

        if(orig_val >= 24) {
          if(increasing) {
            return Math.round(orig_val * 1.1);
          } else {
            return Math.round(orig_val / 1.1);
          }
        } else if(orig_val <= 1) {
          if(increasing) {
            return orig_val * 2;
          } else {
            return orig_val / 2;
          }
        } else {
          return sug_val;
        }
      }

      function stepZoom(elem, step) {
        var orig_val = elem.value-0;
        if(orig_val === 0) return 100;
        var sug_val = orig_val + step;
        if(step === 0) return orig_val;

        if(orig_val >= 100) {
          return sug_val;
        } else {
          if(sug_val >= orig_val) {
            return orig_val * 2;
          } else {
            return orig_val / 2;
          }
        }
      }

    var changeCanvasSize = function(ctl){
      var width = $("#canvas_width");
      var height = $("#canvas_height");
      var w = width.val();
      var h = height.val()

      if(w != "fit" && !svgedit.units.isValidUnit('width', w)) {
        $.alert("Invalid value given");
        width.parent().addClass('error');
        return false;
      }

      width.parent().removeClass('error');

      if(h != "fit" && !svgedit.units.isValidUnit('height', h)) {
        $.alert("Invalid value given");
        height.parent().addClass('error');
        return false;
      }
      height.parent().removeClass('error');
      if(!svgCanvas.setResolution(w, h)) {
        $.alert("No content to fit to");
        var dims = svgCanvas.getResolution()
        width.val(dims.w)
        height.val(dims.h)
        return false;
      }
       updateCanvas();
    }


      $('#resolution').change(function(){
        var w = $('#canvas_width')[0];
        var h = $('#canvas_height')[0];
        if(!this.selectedIndex) {
          $('#resolution_label').html("Custom");
          w.removeAttribute("readonly");
          w.focus();
          w.select();
          if(w.value == 'fit') {
            w.value = 100
            h.value = 100
          }
        } else if(this.value == 'content') {
          w.value = 'fit'
          h.value = 'fit'
          changeCanvasSize();
          var res = svgCanvas.getResolution()
          w.value = res.w
          h.value = res.h

        } else {
          var dims = this.value.split('x');
          dims[0] = parseInt(dims[0]);
          dims[1] = parseInt(dims[1]);
          var diff_w = dims[0] - w.value;
          var diff_h = dims[1] - h.value;
          //animate
          var start = Date.now();
          var duration = 1000;
          var animateCanvasSize = function(timestamp) {
            var progress = Date.now() - start;
            var tick = progress / duration;
            tick = (Math.pow((tick-1), 3) +1);
            w.value = (dims[0] - diff_w + (tick*diff_w)).toFixed(0);
            h.value = (dims[1] - diff_h + (tick*diff_h)).toFixed(0);
            changeCanvasSize();
            if (tick >= 1) {
              var res = svgCanvas.getResolution()
              $('#canvas_width').val(res.w.toFixed())
              $('#canvas_height').val(res.h.toFixed())
              $('#resolution_label').html("<div class='pull'>" + res.w + "<span>×</span></br>" + res.h + "</div>");
            }
            else {
              requestAnimationFrame(animateCanvasSize)
            }
          }
          animateCanvasSize()

        }
      });

      $('#zoom').change(function(){
        changeZoom(this)
      })

      //Prevent browser from erroneously repopulating fields
      $('input,select').attr("autocomplete","off");
      // Associate all button actions as well as non-button keyboard shortcuts
      var Actions = function() {
        // sel:'selector', fn:function, evt:'event', key:[key, preventDefault, NoDisableInInput]
        var tool_buttons = [
          {sel:'#tool_select', fn: clickSelect, evt: 'click', key: ['V', true]},
          {sel:'#tool_fhpath', fn: clickFHPath, evt: 'click', key: ['Q', true]},
          {sel:'#tool_line', fn: clickLine, evt: 'click', key: ['L', true]},
          {sel:'#tool_rect', fn: clickRect, evt: 'click', key: ['R', true], icon: 'rect'},
          {sel:'#tool_ellipse', fn: clickEllipse, evt: 'mouseup', key: ['C', true], icon: 'ellipse'},
          // Preset Sizes - Amr
          {sel:'.qtype_drawing_size_pen', fn: quicksizechange, evt: 'click'},
          // Preset Colors - Amr
          {sel:'.qtype_drawing_color_divsquare', fn: clickquickcolor, evt: 'click'},
          {sel:'.qtype_drawing_color_pallette', fn: quickcolorpallette, evt: 'click'},
          //{sel:'#tool_circle', fn: clickCircle, evt: 'mouseup', icon: 'circle'},
          //{sel:'#tool_fhellipse', fn: clickFHEllipse, evt: 'mouseup', parent: '#tools_ellipse', icon: 'fh_ellipse'},
          {sel:'#tool_path', fn: clickPath, evt: 'click', key: ['P', true]},
          {sel:'#tool_text', fn: clickText, evt: 'click', key: ['T', true]},
          {sel:'#tool_image', fn: clickImage, evt: 'mouseup'},
          {sel:'#tool_zoom', fn: clickZoom, evt: 'mouseup', key: ['Z', true]},
          {sel:'#tool_clear', fn: clickClear, evt: 'mouseup', key: [modKey + 'N', true]},
          {sel:'#tool_save', fn: function() { editingsource ? saveSourceEditor(): clickSave() }, evt: 'mouseup', key: [modKey + 'S', true]},
          {sel:'#tool_saveannotation', fn: clickSaveannotation, evt: 'click'},
          {sel:'.tool_showannotation', fn: clickShowannotation, evt: 'click'},
          {sel:'#showoriginalanswer', fn: clickShowannotation, evt: 'click'},
          {sel:'#tool_export', fn: clickExport, evt: 'mouseup'},
          {sel:'#tool_open', fn: clickOpen, evt: 'mouseup'},
          {sel:'#tool_import', fn: clickImport, evt: 'mouseup'},
          {sel:'#tool_source', fn: showSourceEditor, evt: 'click', key: [modKey + 'U', true]},
          {sel:'#tool_wireframe', fn: clickWireframe, evt: 'click'},
          {sel:'#tool_snap', fn: clickSnapGrid, evt: 'click'},
          {sel:'#tool_rulers', fn: clickRulers, evt: 'click'},
          {sel:'#tool_source_cancel,#svg_source_overlay,#tool_docprops_cancel,#tool_prefs_cancel', fn: cancelOverlays, evt: 'click', key: ['esc', false, false], hidekey: true},
          {sel:'#tool_source_save', fn: saveSourceEditor, evt: 'click'},
          {sel:'#tool_delete,#tool_delete_multi', fn: deleteSelected, evt: 'click', key: ['del/backspace', true]},
          {sel:'#tool_reorient', fn: reorientPath, evt: 'click'},
          {sel:'#tool_node_link', fn: linkControlPoints, evt: 'change'},
          {sel:'#tool_node_clone', fn: clonePathNode, evt: 'click'},
          {sel:'#tool_node_delete', fn: deletePathNode, evt: 'click'},
          {sel:'#tool_openclose_path', fn: opencloseSubPath, evt: 'click'},
          {sel:'#tool_add_subpath', fn: addSubPath, evt: 'click'},
          {sel:'#tool_move_top', fn: moveToTopSelected, evt: 'click', key: modKey + 'shift+up'},
          {sel:'#tool_move_bottom', fn: moveToBottomSelected, evt: 'click', key: modKey + 'shift+down'},
          {sel:'#tool_move_up', fn: moveUpSelected, evt:'click', key: [modKey+'up', true]},
          {sel:'#tool_move_down', fn: moveDownSelected, evt:'click', key: [modKey+'down', true]},
          {sel:'#tool_topath', fn: convertToPath, evt: 'click'},
          {sel:'#tool_make_link,#tool_make_link_multi', fn: makeHyperlink, evt: 'click'},
          {sel:'#tool_clone,#tool_clone_multi', fn: clickClone, evt: 'click', key: [modKey + 'D', true]},
          {sel:'#tool_group', fn: clickGroup, evt: 'click', key: [modKey + 'G', true]},
          {sel:'#tool_ungroup', fn: clickGroup, evt: 'click', key: modKey + 'shift+G'},
          {sel:'#tool_unlink_use', fn: clickGroup, evt: 'click'},
          {sel:'[id^=tool_align]', fn: clickAlign, evt: 'click'},
          {sel:'#tool_undo', fn: clickUndo, evt: 'click', key: modKey + 'z'},
          {sel:'#tool_redo', fn: clickRedo, evt: 'click', key: ['y', true]},
          {sel:'#tool_bucket', fn: clickFill, evt: 'click'},
          {sel:'#tool_cut', fn: cutSelected, evt: 'click', key: [modKey+'x', true]},
          {sel:'#tool_copy', fn: copySelected, evt: 'click', key: modKey+'c'},
          {sel:'#tool_paste', fn: pasteSelected, evt: 'click', key: modKey+'v'},
          {sel:'#tool_switch', fn: clickSwitch, evt: 'click', key: ['x', true]},
          {sel:'#tool_bold', fn: clickBold, evt: 'click', key: [modKey + 'B', true]},
          {sel:'#tool_italic', fn: clickItalic, evt: 'click',  key: [modKey + 'I', true]},
          //{sel:'#sidepanel_handle', fn: toggleSidePanel, key: ['X']},
          {sel:'#copy_save_done', fn: cancelOverlays, evt: 'click'},

          // Shortcuts not associated with buttons

          {key: 'ctrl+left', fn: function(){rotateSelected(0,1)}},
          {key: 'ctrl+right', fn: function(){rotateSelected(1,1)}},
          {key: 'ctrl+shift+left', fn: function(){rotateSelected(0,5)}},
          {key: 'ctrl+shift+right', fn: function(){rotateSelected(1,5)}},
          {key: 'shift+O', fn: selectPrev},
          {key: 'shift+P', fn: selectNext},
          {key: [modKey+'+', true], fn: function(){zoomImage(2);}},
          {key: [modKey+'-', true], fn: function(){zoomImage(.5);}},
          {key: ['up', true], fn: function(){moveSelected(0,-1);}},
          {key: ['down', true], fn: function(){moveSelected(0,1);}},
          {key: ['left', true], fn: function(){moveSelected(-1,0);}},
          {key: ['right', true], fn: function(){moveSelected(1,0);}},
          {key: 'shift+up', fn: function(){moveSelected(0,-10)}},
          {key: 'shift+down', fn: function(){moveSelected(0,10)}},
          {key: 'shift+left', fn: function(){moveSelected(-10,0)}},
          {key: 'shift+right', fn: function(){moveSelected(10,0)}},
          {key: ['alt+up', true], fn: function(){svgCanvas.cloneSelectedElements(0,-1)}},
          {key: ['alt+down', true], fn: function(){svgCanvas.cloneSelectedElements(0,1)}},
          {key: ['alt+left', true], fn: function(){svgCanvas.cloneSelectedElements(-1,0)}},
          {key: ['alt+right', true], fn: function(){svgCanvas.cloneSelectedElements(1,0)}},
          {key: ['alt+shift+up', true], fn: function(){svgCanvas.cloneSelectedElements(0,-10)}},
          {key: ['alt+shift+down', true], fn: function(){svgCanvas.cloneSelectedElements(0,10)}},
          {key: ['alt+shift+left', true], fn: function(){svgCanvas.cloneSelectedElements(-10,0)}},
          {key: ['alt+shift+right', true], fn: function(){svgCanvas.cloneSelectedElements(10,0)}},
          {key: modKey + 'A', fn: function(){svgCanvas.selectAllInCurrentLayer();}},
          {key: 'I', fn: function(){setEyedropperMode()}},

          // Standard shortcuts
          {key: modKey + 'shift+z', fn: clickRedo},
          {key: 'esc', fn: minimizeModal}
        ];

        // Tooltips not directly associated with a single function
        var key_assocs = {
          '4/Shift+4': '#tools_rect_show',
          '5/Shift+5': '#tools_ellipse_show'
        };

        return {
          setAll: function() {
            var flyouts = {};

            $.each(tool_buttons, function(i, opts)  {
              // Bind function to button
              if(opts.sel) {
                var btn = $(opts.sel);
                if (btn.length == 0) return true; // Skip if markup does not exist
                if(opts.evt) {
                  if (svgedit.browser.isTouch() && opts.evt === "click") opts.evt = "mousedown"
                  btn[opts.evt](opts.fn);
                }

                // Add to parent flyout menu, if able to be displayed
                if(opts.parent && $(opts.parent + '_show').length != 0) {
                  var f_h = $(opts.parent);
                  if(!f_h.length) {
                    f_h = makeFlyoutHolder(opts.parent.substr(1));
                  }

                  f_h.append(btn);

                  if(!$.isArray(flyouts[opts.parent])) {
                    flyouts[opts.parent] = [];
                  }
                  flyouts[opts.parent].push(opts);
                }
              }


              // Bind function to shortcut key
              if(opts.key) {
                // Set shortcut based on options
                var keyval, shortcut = '', disInInp = true, fn = opts.fn, pd = false;
                if($.isArray(opts.key)) {
                  keyval = opts.key[0];
                  if(opts.key.length > 1) pd = opts.key[1];
                  if(opts.key.length > 2) disInInp = opts.key[2];
                } else {
                  keyval = opts.key;
                }
                keyval += '';
                if (svgedit.browser.isMac && keyval.indexOf("+") != -1) {
                  var modifier_key =  keyval.split("+")[0];
                  if (modifier_key == "ctrl") keyval.replace("ctrl", "cmd")
                }

                $.each(keyval.split('/'), function(i, key) {
                  $(document).bind('keydown', key, function(e) {
                    fn();
                    if(pd) {
                      e.preventDefault();
                    }
                    // Prevent default on ALL keys?
                    return false;
                  });
                });

                // Put shortcut in title
                if(opts.sel && !opts.hidekey && btn.attr('title')) {
                  var new_title = btn.attr('title').split('[')[0] + ' (' + keyval + ')';
                  key_assocs[keyval] = opts.sel;
                  // Disregard for menu items
                  if(!btn.parents('#main_menu').length) {
                    btn.attr('title', new_title);
                  }
                }
              }
            });

            // Setup flyouts
            setupFlyouts(flyouts);

            $(window).bind('keydown', 'tab', function(e) {
              if(ui_context === 'canvas') {
                e.preventDefault();
                selectNext();
              }
            }).bind('keydown', 'shift+tab', function(e) {
              if(ui_context === 'canvas') {
                e.preventDefault();
                selectPrev();
              }
            });

            $('#tool_zoom').dblclick(dblclickZoom);
          },
          setTitles: function() {
            $.each(key_assocs, function(keyval, sel)  {
              var menu = ($(sel).parents('#main_menu').length);

              $(sel).each(function() {
                if(menu) {
                  var t = $(this).text().split(' [')[0];
                } else {
                  var t = this.title.split(' [')[0];
                }
                var key_str = '';
                // Shift+Up
                $.each(keyval.split('/'), function(i, key) {
                  var mod_bits = key.split('+'), mod = '';
                  if(mod_bits.length > 1) {
                    mod = mod_bits[0] + '+';
                    key = mod_bits[1];
                  }
                  key_str += (i?'/':'') + mod + (key);
                });
                if(menu) {
                  this.lastChild.textContent = t +' ['+key_str+']';
                } else {
                  this.title = t +' ['+key_str+']';
                }
              });
            });
          },
          getButtonData: function(sel) {
            var b;
            $.each(tool_buttons, function(i, btn) {
              if(btn.sel === sel) b = btn;
            });
            return b;
          }
        };
      }();

      Actions.setAll();

      // Select given tool
      Editor.ready(function() {
        var tool,
          itool = curConfig.initTool,
          container = $("#tools_left, #svg_editor .tools_flyout"),
          pre_tool = container.find("#tool_" + itool),
          reg_tool = container.find("#" + itool);
        if(pre_tool.length) {
          tool = pre_tool;
        } else if(reg_tool.length){
          tool = reg_tool;
        } else {
          tool = $("#tool_select");
        }
        tool.click().mouseup();
        // Trigger temp for SEB 3 to initiate first tool. Remove later.
        if (toolButtonClick('#tool_fhpath')) {

            toolButtonClick('#tool_fhpath');
            svgCanvas.setMode('fhpath');
            if(!$('#stroke_width').val() || $('#stroke_width').val() <= 0) {
              $('#stroke_width').val(3.5); // Stroke should not have an inital effect.
              svgCanvas.setStrokeWidth(3.5);
            }
          }


        if(curConfig.wireframe) {
          $('#tool_wireframe').click();
        }

        if(curConfig.showlayers) {
          toggleSidePanel();
        }

        $('#rulers').toggle(!!curConfig.showRulers);
        console.log("FHD Ready..");
        Editor.savingready = 1;


      });

      $('#canvas_height').dragInput({ min: 10,   max: null,  step: 10,  callback: changeCanvasSize,    cursor: false, dragAdjust: .1         });
      $('#canvas_width') .dragInput({ min: 10,   max: null,  step: 10,  callback: changeCanvasSize,    cursor: false, dragAdjust: .1         });
      $('#rect_width')   .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#rect_height')  .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#ellipse_cx')   .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#ellipse_cy')   .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#ellipse_rx')   .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#ellipse_ry')   .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $("#image_height") .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#circle_cx')    .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#circle_cy')    .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#circle_r')     .dragInput({ min: 1,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $("#image_height") .dragInput({ min: 0,    max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#selected_x')   .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#selected_y')   .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $("#path_node_x")  .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $("#path_node_y")  .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $("#image_width")  .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#line_x1')      .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#line_x2')      .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#line_y1')      .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#line_y2')      .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#path_x')       .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#path_y')       .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#rect_x')       .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#rect_y')       .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#g_x')      .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#g_y')      .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#image_x')      .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#text_y')       .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#text_x')       .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#image_y')      .dragInput({ min: null, max: null,  step:  1,  callback: changeAttribute,     cursor: false                         });
      $('#rect_rx')      .dragInput({ min: 0,    max: 100,   step:  1,  callback: changeAttribute,    cursor: true                          });
      $('#stroke_width') .dragInput({ min: 0,    max: 99,    step:  1,  callback: changeStrokeWidth,   cursor: true, smallStep: 0.1, start: 3.5          });
      $('#angle')        .dragInput({ min: -180, max: 180,   step:  1,  callback: changeRotationAngle, cursor: false, dragAdjust: 0.5      });
      $('#font_size')    .dragInput({ min: 1, max: 250, step: 1, callback: changeFontSize, cursor: true, stepfunc: stepFontSize, dragAdjust: .15 });
      $('#group_opacity').dragInput({ min: 0,    max: 100,   step:  5,  callback: changeAttribute,       cursor: true,  start: 100             });
      $('#blur')         .dragInput({ min: 0,    max: 10,    step: .1,  callback: changeBlur,          cursor: true,  start: 0               });
        // Set default zoom
      $('#zoom').val(svgCanvas.getZoom() * 100);

      $("#workarea").contextMenu({
          menu: 'cmenu_canvas',
          inSpeed: 0
        },
        function(action, el, pos) {
          switch ( action ) {
            case 'delete':
              deleteSelected();
              break;
            case 'cut':
              cutSelected();
              break;
            case 'copy':
              copySelected();
              break;
            case 'paste':
              svgCanvas.pasteElements();
              break;
            case 'paste_in_place':
              svgCanvas.pasteElements('in_place');
              break;
            case 'group':
              svgCanvas.groupSelectedElements();
              break;
            case 'ungroup':
              svgCanvas.ungroupSelectedElement();
              break;
            case 'move_front':
              moveToTopSelected();
              break;
            case 'move_up':
              moveUpDownSelected('Up');
              break;
            case 'move_down':
              moveUpDownSelected('Down');
              break;
            case 'move_back':
              moveToBottomSelected();
              break;
              default:
              if(svgedit.contextmenu && svgedit.contextmenu.hasCustomHandler(action)){
                svgedit.contextmenu.getCustomHandler(action).call();
                }
                break;
          }

      });

      $('.contextMenu li').mousedown(function(ev) {
        ev.preventDefault();
      })

      $('#menu_bar').contextmenu(function(ev) { // Prevent right click!
        ev.preventDefault();
      })

      $('#cmenu_canvas li').disableContextMenu();
      canv_menu.enableContextMenuItems('#delete,#cut,#copy');

      window.onbeforeunload = function() {
        // Suppress warning if page is empty
        if(undoMgr.getUndoStackSize() === 0) {
          Editor.show_save_warning = false;
        }

        // show_save_warning is set to "false" when the page is saved.
        if(!curConfig.no_save_warning && Editor.show_save_warning) {
          // Browser already asks question about closing the page
          return "There are unsaved changes.";
        }
      };

      Editor.openPrep = function(func) {
        $('#main_menu').hide();
        if(undoMgr.getUndoStackSize() === 0) {
          func(true);
        } else {
          $.confirm(qtype_drawing_str_newconfirmationmsg, func);
        }
      }

      if (window.FileReader) {

        var import_image = function(e) {
          e.stopPropagation();
          e.preventDefault();
          $("#workarea").removeAttr("style");
          $('#main_menu').hide();
          var file = null;
          if (e.type == "drop") file = e.dataTransfer.files[0]
          else file = this.files[0];
          if (file) {
            if(file.type.indexOf("image") != -1) {
              //detected an image

              //svg handing
              if(file.type.indexOf("svg") != -1) {
                var reader = new FileReader();
                reader.onloadend = function(e) {
                  svgCanvas.importSvgString(e.target.result, true);
                  svgCanvas.ungroupSelectedElement()
                  svgCanvas.ungroupSelectedElement()
                  svgCanvas.groupSelectedElements()
                  svgCanvas.alignSelectedElements("m", "page")
                  svgCanvas.alignSelectedElements("c", "page")
                };
                reader.readAsText(file);
              }

              //image handling
              else {
                var reader = new FileReader();
                reader.onloadend = function(e) {
                  // lets insert the new image until we know its dimensions
                  insertNewImage = function(img_width, img_height){
                      var newImage = svgCanvas.addSvgElementFromJson({
                      "element": "image",
                      "attr": {
                        "x": 0,
                        "y": 0,
                        "width": img_width,
                        "height": img_height,
                        "id": svgCanvas.getNextId(),
                        "style": "pointer-events:inherit"
                      }
                    });
                    svgCanvas.setHref(newImage, e.target.result);
                    svgCanvas.selectOnly([newImage])
                    svgCanvas.alignSelectedElements("m", "page")
                    svgCanvas.alignSelectedElements("c", "page")
                    updateContextPanel();
                  }
                  // put a placeholder img so we know the default dimensions
                  var img_width = 100;
                  var img_height = 100;
                  var img = new Image()
                  img.src = e.target.result
                  document.body.appendChild(img);
                  img.onload = function() {
                    img_width = img.offsetWidth
                    img_height = img.offsetHeight
                    insertNewImage(img_width, img_height);
                    document.body.removeChild(img);
                  }
                };
                reader.readAsDataURL(file)
              }
            }
          }
        }

        var workarea = $("#workarea")

        function onDragEnter(e) {
          e.stopPropagation();
          e.preventDefault();
          workarea.css({
            "-webkit-transform": "scale3d(1.1,1.1,1)",
            "-moz-transform": "scale3d(1.1,1.1,1)",
            "-o-transform": "scale(1.1)",
            "-ms-transform": "scale3d(1.1,1.1,1)",
            "transform": "scale3d(1.1,1.1,1)"
          })

        }

        function onDragOver(e) {
          e.stopPropagation();
          e.preventDefault();
        }

        function onDragLeave(e) {
          workarea.removeAttr("style")
          e.stopPropagation();
          e.preventDefault();
        }

      workarea[0].addEventListener('dragenter', onDragEnter, false);
        workarea[0].addEventListener('dragover', onDragOver, false);
        workarea[0].addEventListener('dragleave', onDragLeave, false);
        workarea[0].addEventListener('drop', import_image, false);

        var open = $('<input type="file">').change(function() {
          var f = this;
          Editor.openPrep(function(ok) {
            if(!ok) return;
            svgCanvas.clear();
            if(f.files.length==1) {
              var reader = new FileReader();
              reader.onloadend = function(e) {
                loadSvgString(e.target.result);
                updateCanvas();
              };
              reader.readAsText(f.files[0]);
            }
          });
        });
        $("#tool_open").show().prepend(open);

        var img_import = $('<input type="file">').change(import_image);
        $("#tool_import").show().prepend(img_import);
      }


      var updateCanvas = Editor.updateCanvas = function(center, new_ctr) {
        var w = workarea.width(), h = workarea.height();
        var w_orig = w, h_orig = h;
        var zoom = svgCanvas.getZoom();
        var w_area = workarea;
        var cnvs = $("#svgcanvas");

        var old_ctr = {
          x: w_area[0].scrollLeft + w_orig/2,
          y: w_area[0].scrollTop + h_orig/2
        };

        var multi = curConfig.canvas_expansion;
        w = Math.max(w_orig, svgCanvas.contentW * zoom * multi);
        h = Math.max(h_orig, svgCanvas.contentH * zoom * multi);
        if(w == w_orig && h == h_orig) {
          workarea.css('overflow','hidden');
        } else {
          workarea.css('overflow','scroll');
        }

        var old_can_y = cnvs.height()/2;
        var old_can_x = cnvs.width()/2;
        cnvs.width(w).height(h);
        var new_can_y = h/2;
        var new_can_x = w/2;
        var offset = svgCanvas.updateCanvas(w, h);

        var ratio = new_can_x / old_can_x;

        var scroll_x = w/2 - w_orig/2;
        var scroll_y = h/2 - h_orig/2;
        if(!new_ctr) {

          var old_dist_x = old_ctr.x - old_can_x;
          var new_x = new_can_x + old_dist_x * ratio;

          var old_dist_y = old_ctr.y - old_can_y;
          var new_y = new_can_y + old_dist_y * ratio;

          new_ctr = {
            x: new_x,
            y: new_y
          };

        } else {
          new_ctr.x += offset.x,
          new_ctr.y += offset.y;
        }

        //width.val(offset.x)
        //height.val(offset.y)

        if(center) {
          // Go to top-left for larger documents
          if(svgCanvas.contentW > w_area.width()) {
            // Top-left
            workarea[0].scrollLeft = offset.x - 10;
            workarea[0].scrollTop = offset.y - 10;
          } else {
            // Center
            w_area[0].scrollLeft = scroll_x;
            w_area[0].scrollTop = scroll_y;
          }
        } else {
          w_area[0].scrollLeft = new_ctr.x - w_orig/2;
          w_area[0].scrollTop = new_ctr.y - h_orig/2;

        }
        if(curConfig.showRulers) {
          updateRulers(cnvs, zoom);
          workarea.scroll();
        }
      }

      // Make [1,2,5] array
      var r_intervals = [];
      for(var i = .1; i < 1E5; i *= 10) {
        r_intervals.push(1 * i);
        r_intervals.push(2 * i);
        r_intervals.push(5 * i);
      }

      function updateRulers(scanvas, zoom) {
        if(fhd_display_mode == 1) return;
        var workarea = document.getElementById("workarea");
        var title_show = document.getElementById("title_show");
        var offset_x = 66;
        var offset_y = 48;
        if(!zoom) zoom = svgCanvas.getZoom();
        if(!scanvas) scanvas = $("#svgcanvas");

        var limit = 30000;

        var c_elem = svgCanvas.getContentElem();

        var units = svgedit.units.getTypeMap();
        var unit = units[curConfig.baseUnit]; // 1 = 1px

        for(var d = 0; d < 2; d++) {
          var is_x = (d === 0);
          var dim = is_x ? 'x' : 'y';
          var lentype = is_x?'width':'height';
          var content_d = c_elem.getAttribute(dim)-0;

          var $hcanv_orig = $('#ruler_' + dim + ' canvas:first');

          // Bit of a hack to fully clear the canvas in Safari & IE9
          $hcanv = $hcanv_orig.clone();
          $hcanv_orig.replaceWith($hcanv);

          var hcanv = $hcanv[0];

          // Set the canvas size to the width of the container
          var ruler_len = scanvas[lentype]()*2;
          var total_len = ruler_len;
          hcanv.parentNode.style[lentype] = total_len + 'px';

          var canv_count = 1;
          var ctx_num = 0;
          var ctx_arr;
          var ctx = hcanv.getContext("2d");

          ctx.fillStyle = "rgb(200,0,0)";
          ctx.fillRect(0,0,hcanv.width,hcanv.height);

          // Remove any existing canvasses
          $hcanv.siblings().remove();

          // Create multiple canvases when necessary (due to browser limits)
          if(ruler_len >= limit) {
            var num = parseInt(ruler_len / limit) + 1;
            ctx_arr = Array(num);
            ctx_arr[0] = ctx;
            for(var i = 1; i < num; i++) {
              hcanv[lentype] = limit;
              var copy = hcanv.cloneNode(true);
              hcanv.parentNode.appendChild(copy);
              ctx_arr[i] = copy.getContext('2d');
            }

            copy[lentype] = ruler_len % limit;

            // set copy width to last
            ruler_len = limit;
          }

          hcanv[lentype] = ruler_len;

          var u_multi = unit * zoom;

          // Calculate the main number interval
          var raw_m = 50 / u_multi;
          var multi = 1;
          for(var i = 0; i < r_intervals.length; i++) {
            var num = r_intervals[i];
            multi = num;
            if(raw_m <= num) {
              break;
            }
          }

          var big_int = multi * u_multi;
          ctx.font = "normal 9px 'Lucida Grande', sans-serif";
          ctx.fillStyle = "#777";

          var ruler_d = ((content_d / u_multi) % multi) * u_multi;
          var label_pos = ruler_d - big_int;
          for (; ruler_d < total_len; ruler_d += big_int) {
            label_pos += big_int;
            var real_d = ruler_d - content_d;

            var cur_d = Math.round(ruler_d) + .5;
            if(is_x) {
              ctx.moveTo(cur_d, 15);
              ctx.lineTo(cur_d, 0);
            } else {
              ctx.moveTo(15, cur_d);
              ctx.lineTo(0, cur_d);
            }

            var num = (label_pos - content_d) / u_multi;
            var label;
            if(multi >= 1) {
              label = Math.round(num);
            } else {
              var decs = (multi+'').split('.')[1].length;
              label = num.toFixed(decs)-0;
            }

            // Do anything special for negative numbers?
//            var is_neg = label < 0;
//            real_d2 = Math.abs(real_d2);

            // Change 1000s to Ks
            if(label !== 0 && label !== 1000 && label % 1000 === 0) {
              label = (label / 1000) + 'K';
            }

            if(is_x) {
              ctx.fillText(label, ruler_d+2, 8);
              ctx.fillStyle = "#777";
            } else {
              var str = (label+'').split('');
              for(var i = 0; i < str.length; i++) {
                ctx.fillText(str[i], 1, (ruler_d+9) + i*9);
                ctx.fillStyle = "#777";
              }
            }

            var part = big_int / 10;
            for(var i = 1; i < 10; i++) {
              var sub_d = Math.round(ruler_d + part * i) + .5;
              if(ctx_arr && sub_d > ruler_len) {
                ctx_num++;
                ctx.stroke();
                if(ctx_num >= ctx_arr.length) {
                  i = 10;
                  ruler_d = total_len;
                  continue;
                }
                ctx = ctx_arr[ctx_num];
                ruler_d -= limit;
                sub_d = Math.round(ruler_d + part * i) + .5;
              }

              var line_num = (i % 2)?12:10;
              if(is_x) {
                ctx.moveTo(sub_d, 15);
                ctx.lineTo(sub_d, line_num);
              } else {
                ctx.moveTo(15, sub_d);
                ctx.lineTo(line_num ,sub_d);
              }
            }
          }
          ctx.strokeStyle = "#666";
          ctx.stroke();
        }
      }

//      $(function() {
        updateCanvas(true);
        // added by amr for initial state.
//      });

    //  var revnums = "svg-editor.js ($Rev: 2083 $) ";
    //  revnums += svgCanvas.getVersion();
    //  $('#copyright')[0].setAttribute("title", revnums);

      // Callback handler for embedapi.js
      try{
        var json_encode = function(obj){
        //simple partial JSON encoder implementation
        if(window.JSON && JSON.stringify) return JSON.stringify(obj);
        var enc = arguments.callee; //for purposes of recursion
        if(typeof obj == "boolean" || typeof obj == "number"){
          return obj+'' //should work...
        }else if(typeof obj == "string"){
        //a large portion of this is stolen from Douglas Crockford's json2.js
        return '"'+
            obj.replace(
            /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g
            , function (a) {
            return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
            })
            +'"'; //note that this isn't quite as purtyful as the usualness
        }else if(obj.length){ //simple hackish test for arrayish-ness
        for(var i = 0; i < obj.length; i++){
          obj[i] = enc(obj[i]); //encode every sub-thingy on top
        }
        return "["+obj.join(",")+"]";
        }else{
        var pairs = []; //pairs will be stored here
        for(var k in obj){ //loop through thingys
          pairs.push(enc(k)+":"+enc(obj[k])); //key: value
        }
        return "{"+pairs.join(",")+"}" //wrap in the braces
        }
      }
        window.addEventListener("message", function(e){
        var cbid = parseInt(e.data.substr(0, e.data.indexOf(";")));
        try{
          e.source.postMessage("SVGe"+cbid+";"+json_encode(eval(e.data)), "*");
        }catch(err){
          e.source.postMessage("SVGe"+cbid+";error:"+err.message, "*");
        }
      }, false)
      }catch(err){
        window.embed_error = err;
      }



      // For Compatibility with older extensions
      $(function() {
        window.svgCanvas = svgCanvas;
        svgCanvas.ready = methodDraw.ready;
      });


      Editor.setLang = function(lang, allStrings) {
        $.pref('lang', lang);
        $('#lang_select').val(lang);
        if(allStrings) {

          var notif = allStrings.notification;

          svgCanvas.runExtensions("langChanged", lang);

          // Update flyout tooltips
          setFlyoutTitles();

          // Copy title for certain tool elements
          var elems = {
            '#stroke_color': '#tool_stroke .icon_label, #tool_stroke .color_block',
            '#fill_color': '#tool_fill label, #tool_fill .color_block',
            '#linejoin_miter': '#cur_linejoin',
            '#linecap_butt': '#cur_linecap'
          }

          $.each(elems, function(source, dest) {
            $(dest).attr('title', $(source)[0].title);
          });

          // Copy alignment titles
          $('#multiselected_panel div[id^=tool_align]').each(function() {
            $('#tool_pos' + this.id.substr(10))[0].title = this.title;
          });

        }
      };

    };

    var callbacks = [];

    function loadSvgString(str, callback) {
      var success = svgCanvas.setSvgString(str) !== false;
      callback = callback || $.noop;
      if(success) {
        callback(true);
      } else {
        $.alert("Error: Unable to load SVG data", function() {
          callback(false);
        });
      }
    }
    function getCurrentDrawingSVG() {
      var current_svg_drawing = svgCanvas.getSvgString();
        return current_svg_drawing;
    }
    function getCurrentMoodleQuestionID() {
      var current_qid_drawing = svgCanvas.getHDQuestionID();
      if(current_qid_drawing == 'undefined') { // try again, maybe loading didnt work?
          var current_qid_drawing = svgCanvas.getHDQuestionID();
          console.error("We lost QuestionID - tried again and result came: "+current_qid_drawing);
      }
      return current_qid_drawing;
    }
    Editor.ready = function(cb) {
      if(!is_ready) {
        callbacks.push(cb);
      } else {
        cb();
      }
    };

    Editor.runCallbacks = function() {
      $.each(callbacks, function() {
        this();
      });
      is_ready = true;
    };

    Editor.loadFromString = function(str) {
    //  Editor.ready(function() {
        loadSvgString(str);
    //  });
    };

    Editor.loadFromURL = function(url, opts) {
      if(!opts) opts = {};

      var cache = opts.cache;
      var cb = opts.callback;

      Editor.ready(function() {
        $.ajax({
          'url': url,
          'dataType': 'text',
          cache: !!cache,
          success: function(str) {
            loadSvgString(str, cb);
          },
          error: function(xhr, stat, err) {
            if(xhr.status != 404 && xhr.responseText) {
              loadSvgString(xhr.responseText, cb);
            } else {
              $.alert("Unable to load from URL" + ": \n"+err+'', cb);
            }
          }
        });
      });
    };
    Editor.loadFromDataURI = function(str) {
      Editor.ready(function() {
        var pre = 'data:image/svg+xml;base64,';
        var src = str.substring(pre.length);
        loadSvgString(svgedit.utilities.decode64(src));
      });
    };

    Editor.switchToTxt = function() {
       clickText();
    };

    Editor.SaveDrawingToMoodle = function() {
      Editor.ready(function() {Editor.numsaved++;

  //    if(Editor.numsaved > 2){
            // save for moodle
            questionID = svgCanvas.getHDQuestionID();
            CanvdrawingValue = getCurrentDrawingSVG();

           var svg = d3.select("#svgcontent");
           var gpaths = svg.select('#paths');
           var path =  gpaths.selectAll("path").node();
           var line =  gpaths.selectAll("line").node();
           var polygon =  gpaths.selectAll("polygon").node();
           var rect =  gpaths.selectAll("rect").node();
           var text =  gpaths.selectAll("text").node();
           var ellipse = gpaths.selectAll("ellipse").node();
           var polyline = gpaths.selectAll("polyline").node();

           if(Editor.forcesaving == 1 || (polyline && polyline != null) || (path && path != null) || (line && line != null) || (polygon && polygon != null) || (rect && rect != null) || (text && text != null) || (ellipse && ellipse != null)){

                    $('#qtype_drawing_textarea_id_'+attemptid+uniquefieldnameattemptid, window.parent.document).text(CanvdrawingValue);
                    $('#qtype_drawing_drawingevent_'+attemptid+uniquefieldnameattemptid, window.parent.document).val(Math.random().toString(36).substring(7));
           }





 //      }
      });

  };

    Editor.addExtension = function() {
      var args = arguments;

      // Note that we don't want this on Editor.ready since some extensions
      // may want to run before then (like server_opensave).
      $(function() {
        if(svgCanvas) svgCanvas.addExtension.apply(this, args);
      });
    };
    return Editor;
  }(jQuery);

  // Run init once DOM is loaded
  $(methodDraw.init);

})();
