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   1  // This file is part of Moodle - http://moodle.org/
   2  //
   3  // Moodle is free software: you can redistribute it and/or modify
   4  // it under the terms of the GNU General Public License as published by
   5  // the Free Software Foundation, either version 3 of the License, or
   6  // (at your option) any later version.
   7  //
   8  // Moodle is distributed in the hope that it will be useful,
   9  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  // GNU General Public License for more details.
  12  //
  13  // You should have received a copy of the GNU General Public License
  14  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  15  /* global ANNOTATIONCOLOUR */
  16  
  17  /**
  18   * Provides an in browser PDF editor.
  19   *
  20   * @module moodle-assignfeedback_editpdf-editor
  21   */
  22  
  23  /**
  24   * Class representing a highlight.
  25   *
  26   * @namespace M.assignfeedback_editpdf
  27   * @class annotationhighlight
  28   * @extends M.assignfeedback_editpdf.annotation
  29   * @module moodle-assignfeedback_editpdf-editor
  30   */
  31  var ANNOTATIONHIGHLIGHT = function(config) {
  32      ANNOTATIONHIGHLIGHT.superclass.constructor.apply(this, [config]);
  33  };
  34  
  35  ANNOTATIONHIGHLIGHT.NAME = "annotationhighlight";
  36  ANNOTATIONHIGHLIGHT.ATTRS = {};
  37  
  38  Y.extend(ANNOTATIONHIGHLIGHT, M.assignfeedback_editpdf.annotation, {
  39      /**
  40       * Draw a highlight annotation
  41       * @protected
  42       * @method draw
  43       * @return M.assignfeedback_editpdf.drawable
  44       */
  45      draw: function() {
  46          var drawable,
  47              shape,
  48              bounds,
  49              highlightcolour;
  50  
  51          drawable = new M.assignfeedback_editpdf.drawable(this.editor);
  52          bounds = new M.assignfeedback_editpdf.rect();
  53          bounds.bound([new M.assignfeedback_editpdf.point(this.x, this.y),
  54                        new M.assignfeedback_editpdf.point(this.endx, this.endy)]);
  55  
  56          highlightcolour = ANNOTATIONCOLOUR[this.colour];
  57  
  58          // Add an alpha channel to the rgb colour.
  59  
  60          highlightcolour = highlightcolour.replace('rgb', 'rgba');
  61          highlightcolour = highlightcolour.replace(')', ',0.5)');
  62  
  63          shape = this.editor.graphic.addShape({
  64              type: Y.Rect,
  65              width: bounds.width,
  66              height: bounds.height,
  67              stroke: false,
  68              fill: {
  69                  color: highlightcolour
  70              },
  71              x: bounds.x,
  72              y: bounds.y
  73          });
  74  
  75          drawable.shapes.push(shape);
  76          this.drawable = drawable;
  77  
  78          return ANNOTATIONHIGHLIGHT.superclass.draw.apply(this);
  79      },
  80  
  81      /**
  82       * Draw the in progress edit.
  83       *
  84       * @public
  85       * @method draw_current_edit
  86       * @param M.assignfeedback_editpdf.edit edit
  87       */
  88      draw_current_edit: function(edit) {
  89          var drawable = new M.assignfeedback_editpdf.drawable(this.editor),
  90              shape,
  91              bounds,
  92              highlightcolour;
  93  
  94          bounds = new M.assignfeedback_editpdf.rect();
  95          bounds.bound([new M.assignfeedback_editpdf.point(edit.start.x, edit.start.y),
  96                        new M.assignfeedback_editpdf.point(edit.end.x, edit.end.y)]);
  97  
  98          // Set min. width of highlight.
  99          if (!bounds.has_min_width()) {
 100              bounds.set_min_width();
 101          }
 102  
 103          highlightcolour = ANNOTATIONCOLOUR[edit.annotationcolour];
 104          // Add an alpha channel to the rgb colour.
 105  
 106          highlightcolour = highlightcolour.replace('rgb', 'rgba');
 107          highlightcolour = highlightcolour.replace(')', ',0.5)');
 108  
 109          // We will draw a box with the current background colour.
 110          shape = this.editor.graphic.addShape({
 111              type: Y.Rect,
 112              width: bounds.width,
 113              height: 16,
 114              stroke: false,
 115              fill: {
 116                 color: highlightcolour
 117              },
 118              x: bounds.x,
 119              y: edit.start.y
 120          });
 121  
 122          drawable.shapes.push(shape);
 123  
 124          return drawable;
 125      },
 126  
 127      /**
 128       * Promote the current edit to a real annotation.
 129       *
 130       * @public
 131       * @method init_from_edit
 132       * @param M.assignfeedback_editpdf.edit edit
 133       * @return bool true if highlight bound is more than min width/height, else false.
 134       */
 135      init_from_edit: function(edit) {
 136          var bounds = new M.assignfeedback_editpdf.rect();
 137          bounds.bound([edit.start, edit.end]);
 138  
 139          this.gradeid = this.editor.get('gradeid');
 140          this.pageno = this.editor.currentpage;
 141          this.x = bounds.x;
 142          this.y = edit.start.y;
 143          this.endx = bounds.x + bounds.width;
 144          this.endy = edit.start.y + 16;
 145          this.colour = edit.annotationcolour;
 146          this.page = '';
 147  
 148          return (bounds.has_min_width());
 149      }
 150  
 151  });
 152  
 153  M.assignfeedback_editpdf = M.assignfeedback_editpdf || {};
 154  M.assignfeedback_editpdf.annotationhighlight = ANNOTATIONHIGHLIGHT;