protected function renderImage($image)
{
$w = $this->getWidth();
$h = $this->getHeight();
$background = $this->getColor('background', $image);
$foreground = $this->getColor('foreground', $image);
$halftone = $this->getColor('halftone', $image);
$colors = array();
$shadows = array();
for ($i = 0; $i < count($this->data['values']); ++$i) {
$r = rand(64, 192);
$g = rand(64, 192);
$b = rand(64, 192);
$shadows[$i] = Graph::htmlColorToColor(sprintf('#%02x%02x%02x', $r, $g, $b), $image);
$colors[$i] = Graph::htmlColorToColor(sprintf('#%02x%02x%02x', $r + 63, $g + 63, $b + 63), $image);
}
// background
imagefill($image, 0, 0, $background);
// border
imagerectangle($image, 0, 0, $w - 1, $h - 1, $foreground);
// draw bars
$bar_height = $this->getBarHeight($image);
$titles_width = 0;
$y = $this->padding;
foreach ($this->data['titles'] as $title) {
imagettftext($image, $this->font_size, 0, $this->padding, $y + $bar_height - 4, $foreground, $this->font, $title);
$box = imagettfbbox($this->font_size, 0, $this->font, $title);
$tw = $box[2] - $box[0];
if ($tw > $titles_width) {
$titles_width = $tw;
}
$y += $bar_height + $this->bar_spacing;
}
$titles_width += $this->padding + $this->titles_values_spacing;
$values_width = 0;
$y = $this->padding;
foreach ($this->data['values'] as $value) {
imagettftext($image, $this->font_size, 0, $titles_width, $y + $bar_height - 4, $halftone, $this->font, $value . $this->suffix);
$box = imagettfbbox($this->font_size, 0, $this->font, $value . $this->suffix);
$tw = $box[2] - $box[0];
if ($tw > $values_width) {
$values_width = $tw;
}
$y += $bar_height + $this->bar_spacing;
}
$values_width += $this->values_bars_spacing;
$y = $this->padding;
$i = 0;
foreach ($this->data['values'] as $value) {
$x1 = $titles_width + $values_width;
$y1 = $y;
$x2 = round($value * ($w - $this->padding - $titles_width - $values_width) / $this->max_value) + $titles_width + $values_width;
$y2 = $y + $bar_height;
imagefilledrectangle($image, $x1, $y1, $x2, $y2, $shadows[$i]);
if ($x2 - $x1 > 2) {
imagefilledrectangle($image, $x1 + 1, $y1 + 1, $x2 - 1, $y2 - 3, $colors[$i]);
}
$y += $bar_height + $this->bar_spacing;
++$i;
}
imagepng($image, dirname(__FILE__) . '/../../../../../web/images/occupancycache.png');
}
