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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  
  16  /**
  17   * Provides an in browser PDF editor.
  18   *
  19   * @module moodle-assignfeedback_editpdf-editor
  20   */
  21  
  22  /**
  23   * Class representing a highlight.
  24   *
  25   * @namespace M.assignfeedback_editpdf
  26   * @class annotationhighlight
  27   * @extends M.assignfeedback_editpdf.annotation
  28   * @module moodle-assignfeedback_editpdf-editor
  29   */
  30  ANNOTATIONHIGHLIGHT = function(config) {
  31      ANNOTATIONHIGHLIGHT.superclass.constructor.apply(this, [config]);
  32  };
  33  
  34  ANNOTATIONHIGHLIGHT.NAME = "annotationhighlight";
  35  ANNOTATIONHIGHLIGHT.ATTRS = {};
  36  
  37  Y.extend(ANNOTATIONHIGHLIGHT, M.assignfeedback_editpdf.annotation, {
  38      /**
  39       * Draw a highlight annotation
  40       * @protected
  41       * @method draw
  42       * @return M.assignfeedback_editpdf.drawable
  43       */
  44      draw : function() {
  45          var drawable,
  46              shape,
  47              bounds,
  48              highlightcolour;
  49  
  50          drawable = new M.assignfeedback_editpdf.drawable(this.editor);
  51          bounds = new M.assignfeedback_editpdf.rect();
  52          bounds.bound([new M.assignfeedback_editpdf.point(this.x, this.y),
  53                        new M.assignfeedback_editpdf.point(this.endx, this.endy)]);
  54  
  55          highlightcolour = ANNOTATIONCOLOUR[this.colour];
  56  
  57          // Add an alpha channel to the rgb colour.
  58  
  59          highlightcolour = highlightcolour.replace('rgb', 'rgba');
  60          highlightcolour = highlightcolour.replace(')', ',0.5)');
  61  
  62          shape = this.editor.graphic.addShape({
  63              type: Y.Rect,
  64              width: bounds.width,
  65              height: bounds.height,
  66              stroke: false,
  67              fill: {
  68                  color: highlightcolour
  69              },
  70              x: bounds.x,
  71              y: bounds.y
  72          });
  73  
  74          drawable.shapes.push(shape);
  75          this.drawable = drawable;
  76  
  77          return ANNOTATIONHIGHLIGHT.superclass.draw.apply(this);
  78      },
  79  
  80      /**
  81       * Draw the in progress edit.
  82       *
  83       * @public
  84       * @method draw_current_edit
  85       * @param M.assignfeedback_editpdf.edit edit
  86       */
  87      draw_current_edit : function(edit) {
  88          var drawable = new M.assignfeedback_editpdf.drawable(this.editor),
  89              shape,
  90              bounds,
  91              highlightcolour;
  92  
  93          bounds = new M.assignfeedback_editpdf.rect();
  94          bounds.bound([new M.assignfeedback_editpdf.point(edit.start.x, edit.start.y),
  95                        new M.assignfeedback_editpdf.point(edit.end.x, edit.end.y)]);
  96  
  97          // Set min. width of highlight.
  98          if (!bounds.has_min_width()) {
  99              bounds.set_min_width();
 100          }
 101  
 102          highlightcolour = ANNOTATIONCOLOUR[edit.annotationcolour];
 103          // Add an alpha channel to the rgb colour.
 104  
 105          highlightcolour = highlightcolour.replace('rgb', 'rgba');
 106          highlightcolour = highlightcolour.replace(')', ',0.5)');
 107  
 108          // We will draw a box with the current background colour.
 109          shape = this.editor.graphic.addShape({
 110              type: Y.Rect,
 111              width: bounds.width,
 112              height: 16,
 113              stroke: false,
 114              fill: {
 115                 color: highlightcolour
 116              },
 117              x: bounds.x,
 118              y: edit.start.y
 119          });
 120  
 121          drawable.shapes.push(shape);
 122  
 123          return drawable;
 124      },
 125  
 126      /**
 127       * Promote the current edit to a real annotation.
 128       *
 129       * @public
 130       * @method init_from_edit
 131       * @param M.assignfeedback_editpdf.edit edit
 132       * @return bool true if highlight bound is more than min width/height, else false.
 133       */
 134      init_from_edit : function(edit) {
 135          var bounds = new M.assignfeedback_editpdf.rect();
 136          bounds.bound([edit.start, edit.end]);
 137  
 138          this.gradeid = this.editor.get('gradeid');
 139          this.pageno = this.editor.currentpage;
 140          this.x = bounds.x;
 141          this.y = edit.start.y;
 142          this.endx = bounds.x + bounds.width;
 143          this.endy = edit.start.y + 16;
 144          this.colour = edit.annotationcolour;
 145          this.page = '';
 146  
 147          return (bounds.has_min_width());
 148      }
 149  
 150  });
 151  
 152  M.assignfeedback_editpdf = M.assignfeedback_editpdf || {};
 153  M.assignfeedback_editpdf.annotationhighlight = ANNOTATIONHIGHLIGHT;