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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 2d rect.
  24   *
  25   * @namespace M.assignfeedback_editpdf
  26   * @param int x
  27   * @param int y
  28   * @param int width
  29   * @param int height
  30   * @class rect
  31   */
  32  var RECT = function(x, y, width, height) {
  33  
  34      /**
  35       * X coordinate.
  36       * @property x
  37       * @type int
  38       * @public
  39       */
  40      this.x = x;
  41  
  42      /**
  43       * Y coordinate.
  44       * @property y
  45       * @type int
  46       * @public
  47       */
  48      this.y = y;
  49  
  50      /**
  51       * Width
  52       * @property width
  53       * @type int
  54       * @public
  55       */
  56      this.width = width;
  57  
  58      /**
  59       * Height
  60       * @property height
  61       * @type int
  62       * @public
  63       */
  64      this.height = height;
  65  
  66      /**
  67       * Set this rect to represent the smallest possible rectangle containing this list of points.
  68       * @method bounds
  69       * @param M.assignfeedback_editpdf.point[]
  70       * @public
  71       */
  72      this.bound = function(points) {
  73          var minx = 0,
  74              maxx = 0,
  75              miny = 0,
  76              maxy = 0,
  77              i = 0,
  78              point;
  79  
  80          for (i = 0; i < points.length; i++) {
  81              point = points[i];
  82              if (point.x < minx || i === 0) {
  83                  minx = point.x;
  84              }
  85              if (point.x > maxx || i === 0) {
  86                  maxx = point.x;
  87              }
  88              if (point.y < miny || i === 0) {
  89                  miny = point.y;
  90              }
  91              if (point.y > maxy || i === 0) {
  92                  maxy = point.y;
  93              }
  94          }
  95          this.x = minx;
  96          this.y = miny;
  97          this.width = maxx - minx;
  98          this.height = maxy - miny;
  99          // Allow chaining.
 100          return this;
 101      };
 102  
 103      /**
 104       * Checks if rect has min width.
 105       * @method has_min_width
 106       * @return bool true if width is more than 5px.
 107       * @public
 108       */
 109      this.has_min_width = function() {
 110          return (this.width >= 5);
 111      };
 112  
 113      /**
 114       * Checks if rect has min height.
 115       * @method has_min_height
 116       * @return bool true if height is more than 5px.
 117       * @public
 118       */
 119      this.has_min_height = function() {
 120          return (this.height >= 5);
 121      };
 122  
 123      /**
 124       * Set min. width of annotation bound.
 125       * @method set_min_width
 126       * @public
 127       */
 128      this.set_min_width = function() {
 129          this.width = 5;
 130      };
 131  
 132      /**
 133       * Set min. height of annotation bound.
 134       * @method set_min_height
 135       * @public
 136       */
 137      this.set_min_height = function() {
 138          this.height = 5;
 139      };
 140  };
 141  
 142  M.assignfeedback_editpdf = M.assignfeedback_editpdf || {};
 143  M.assignfeedback_editpdf.rect = RECT;