application/vendor/mfchart/StackedBarChart.php

   1 <?php
   2
   3 class StackedBarChart extends BarChart {
   4
   5         public function __construct($width=NULL, $height=NULL)
   6         {
   7                 parent::__construct($width, $height);
   8
   9                 $this->type = 'stacked';
  10
  11                 $this->colors['bar_color'] = array(
  12                                 array('#e0d62e', NULL, NULL),
  13                                 array('#bdb51c', NULL, NULL),
  14                                 array('#9f9917', NULL, NULL),
  15                                 array('#807a13', NULL, NULL),
  16                                 array('#68640f', NULL, NULL),
  17                                 array('#e6de51', NULL, NULL),
  18                                 array('#eee988', NULL, NULL)
  19                         );
  20                 $this->colors['bar_border_color'] = array(
  21                                 array('#747014', 25,     NULL),
  22                                 array('#9d971c', 25,     NULL)
  23                         );
  24         }
  25
  26
  27         protected function draw_values($zeroline, $ratio)
  28         {
  29                 $plot_sizes = $this->get_plot_area();
  30                 $font_bar_legend = $this->font_size < 1 ? $this->font_size : $this->font_size-1;
  31
  32                 $total_bars = count($this->values);     // count of all bars
  33                 $gap = ($plot_sizes[0] - $total_bars*$this->bar_width ) / ($total_bars+1);      // gap between bars
  34
  35
  36                 $i=0;
  37                 foreach ($this->values AS $key => $value)
  38                 {
  39                         $x1 = $this->margin_left + $gap + $i*($gap+$this->bar_width);
  40                         $x2 = $x1 + $this->bar_width;
  41                         $y2 = $this->height - $this->margin_bottom - $zeroline;
  42                         $y1 = array();
  43                         foreach ($value as $v)
  44                                 $y1[] = $y2 - $v*$ratio;
  45
  46                         if ($this->vertical_bar_lines)
  47                                 imageline($this->image, $x1+$this->bar_width/2, $this->margin_top-1, $x1+$this->bar_width/2, $this->height-$this->margin_bottom-1, IMG_COLOR_STYLED);
  48
  49                         $sum = array_sum($value);       // sum of all values in a stack bar
  50                         $bar_border = $y2 - $sum*$ratio;        // border of the sum in pixels from the top of the graph
  51
  52                         $j = 0;
  53                         $base = 0;
  54                         foreach ($y1 as $v)
  55                         {
  56                                 $y1i = $v-$base;
  57                                 $y2i = $y2-$base;
  58
  59                                 $to_draw = array($y1i, $y2i);
  60                                 $borders = array($bar_border, $y2);
  61                                 sort($to_draw);
  62                                 sort($borders);
  63                                 if ($to_draw[0] > $borders[1] OR $to_draw[1] < $borders[0])
  64                                         continue;
  65                                 if ($to_draw[1] > $borders[1])
  66                                         $to_draw[1] = $borders[1];
  67                                 if ($to_draw[0] < $borders[0])
  68                                         $to_draw[0] = $borders[0];
  69
  70                                 imagefilledrectangle($this->image, $x1, $to_draw[0], $x2, $to_draw[1], $this->get_color('bar_color', $j)); // draw bar
  71
  72                                 if ($this->get_color('bar_border_color'))
  73                                 {       // draw bar border
  74                                         imageline($this->image, $x1, $to_draw[0], $x1, $to_draw[1], $this->get_color('bar_border_color', $j)); // left
  75                                         if ($to_draw[1] > $y2)
  76                                                 imageline($this->image, $x1, $to_draw[1], $x2, $to_draw[1], $this->get_color('bar_border_color', $j)); // bottom
  77                                         else
  78                                                 imageline($this->image, $x1, $to_draw[0], $x2, $to_draw[0], $this->get_color('bar_border_color', $j)); // top
  79                                         imageline($this->image, $x2, $to_draw[0], $x2, $to_draw[1], $this->get_color('bar_border_color', $j)); // right
  80                                 }
  81
  82                                 $base += $y2-$v + 1;
  83                                 $j++;
  84                         }
  85
  86                         if ($sum != 0)
  87                                 imagefilledrectangle($this->image, $x2, $bar_border+($sum > 0 ? 1 : -1), $x2+1, $y2, $this->get_color('shade_color')); // draw shade of bar
  88
  89                         $this->add_occupied($x1, $bar_border, $x2, $y2);
  90
  91                         $box_points = imagettfbbox($this->font_size, 0, $this->font, $sum);
  92                         $bar_middle = $x1 + $this->bar_width/2;
  93                         $bar_legend_hwidth = ($box_points[4]-$box_points[6]) / 2;
  94                         $fheight = $box_points[3]-$box_points[5];
  95
  96                         // bar legend
  97                         if ($this->bar_legend)
  98                         {
  99                                 if ($sum >= 0)
 100                                 {
 101                                         utilities::imagestringbox($this->image, $this->font, $font_bar_legend, $bar_middle-$bar_legend_hwidth, $bar_border-$fheight-5, $bar_middle+$bar_legend_hwidth, $bar_border, ALIGN_CENTER, VALIGN_MIDDLE, 0, $sum, $this->get_color('font_color3'));
 102                                         $this->add_occupied($bar_middle-$bar_legend_hwidth, $bar_border-$fheight-5, $bar_middle+$bar_legend_hwidth, $bar_border);
 103                                 }
 104                                 else
 105                                 {
 106                                         utilities::imagestringbox($this->image, $this->font, $font_bar_legend, $bar_middle-$bar_legend_hwidth, $bar_border+5, $bar_middle+$bar_legend_hwidth, $bar_border+$fheight+5, ALIGN_CENTER, VALIGN_MIDDLE, 0, $sum, $this->get_color('font_color3'));
 107                                         $this->add_occupied($bar_middle-$bar_legend_hwidth, $bar_border+5, $bar_middle+$bar_legend_hwidth, $bar_border+$fheight+5);
 108                                 }
 109                         }
 110
 111
 112                         $box_points = imagettfbbox($this->font_size, 0, $this->font, $key);
 113                         $y_legend_hwidth = ($box_points[4]-$box_points[6]) / 2;
 114
 115                         // x axis legend
 116                         utilities::imagestringbox($this->image, $this->font, $this->font_size, $bar_middle-$y_legend_hwidth, $this->margin_top+$plot_sizes[1]+5, $bar_middle+$y_legend_hwidth, $this->margin_top+$plot_sizes[1]+5+$fheight, ALIGN_CENTER, VALIGN_MIDDLE, 0, $key, $this->get_color('font_color'));
 117
 118                         $i++;
 119                 }
 120         }
 121
 122 }