WEB-INF/lib/libchart/classes/view/color/ColorSet.php

   1 <?php
   2         /* Libchart - PHP chart library
   3          * Copyright (C) 2005-2008 Jean-Marc Trémeaux (jm.tremeaux at gmail.com)
   4          *
   5          * This program is free software: you can redistribute it and/or modify
   6          * it under the terms of the GNU General Public License as published by
   7          * the Free Software Foundation, either version 3 of the License, or
   8          * (at your option) any later version.
   9          *
  10          * This program is distributed in the hope that it will be useful,
  11          * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12          * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13          * GNU General Public License for more details.
  14          *
  15          * You should have received a copy of the GNU General Public License
  16          * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17          *
  18          */
  19
  20         /**
  21          * A set of colors, used for drawing series of data.
  22          *
  23          * @author Jean-Marc Trémeaux (jm.tremeaux at gmail.com)
  24          * Created on 26 july 2007
  25          */
  26         class ColorSet {
  27                 public $colorList;
  28                 public $shadowColorList;
  29
  30                 /**
  31                  * ColorSet constructor.
  32                  *
  33                  * @param $shadowFactor Shadow factor
  34                  * @param $colorArray Colors as an array
  35                  */
  36                 public function ColorSet($colorList, $shadowFactor) {
  37                         $this->colorList = $colorList;
  38                         $this->shadowColorList = array();
  39
  40                         // Generate the shadow color set
  41                         foreach ($colorList as $color) {
  42                                 $shadowColor = $color->getShadowColor($shadowFactor);
  43
  44                                 array_push($this->shadowColorList, $shadowColor);
  45                         }
  46                 }
  47
  48                 /**
  49                  * Reset the iterator over the collections of colors.
  50                  */
  51                 public function reset() {
  52                         reset($this->colorList);
  53                         reset($this->shadowColorList);
  54                 }
  55
  56                 /**
  57                  * Iterate over the colors and shadow colors. When we go after the last one, loop over.
  58                  *
  59                  */
  60                 public function next() {
  61                         $value = next($this->colorList);
  62                         next($this->shadowColorList);
  63
  64                         // When we go after the last value, loop over.
  65                         if ($value == FALSE) {
  66                                 $this->reset();
  67                         }
  68                 }
  69
  70                 /**
  71                  * Returns the current color.
  72                  *
  73                  * @return Current color
  74                  */
  75                 public function currentColor() {
  76                         return current($this->colorList);
  77                 }
  78
  79                 /**
  80                  * Returns the current shadow color.
  81                  *
  82                  * @return Current shadow color
  83                  */
  84                 public function currentShadowColor() {
  85                         return current($this->shadowColorList);
  86                 }
  87         }
  88 ?>