public function transform(CGImageBase $src)
{
$width = $src['width'];
$height = $src['height'];
$radius = $this->_radius;
$type = $src['type'];
$color = null;
$r = $g = $b = 255;
if ($src->supports_transparency() && !$this->_color) {
$this->_color = 'transparent';
}
if ($this->_color == 'transparent') {
$type = 'image/png';
}
$_dest = new CGImageBase(array($type, $width, $height));
imagecopy($_dest['rsrc'], $src['rsrc'], 0, 0, 0, 0, $width, $height);
if ($this->_color) {
if ($this->_color == 'transparent') {
// get the dest imagages transparent color.
$color = $_dest['transparent'];
if (!$color) {
list($r, $g, $b) = cgsi_utils::find_unused_color($_dest);
}
} else {
// use the specified rgb.
list($r, $g, $b) = cgsi_utils::color_to_rgb($this->_color);
}
}
if (!$color) {
if ($this->_color == 'transparent') {
$color = imagecolorallocatealpha($_dest['rsrc'], $r, $g, $b, 127);
} else {
$color = imagecolorallocate($_dest['rsrc'], $r, $g, $b);
}
}
if ($this->_color == 'transparent') {
$_dest['transparent'] = $color;
imagecolortransparent($_dest['rsrc'], $color);
imagealphablending($_dest['rsrc'], FALSE);
}
// round the corners.
imagearc($_dest['rsrc'], $radius - 1, $radius - 1, $radius * 2, $radius * 2, 180, 270, $color);
imagefilltoborder($_dest['rsrc'], 0, 0, $color, $color);
imagearc($_dest['rsrc'], $width - $radius, $radius - 1, $radius * 2, $radius * 2, 270, 0, $color);
imagefilltoborder($_dest['rsrc'], $width - 1, 0, $color, $color);
imagearc($_dest['rsrc'], $radius - 1, $height - $radius, $radius * 2, $radius * 2, 90, 180, $color);
imagefilltoborder($_dest['rsrc'], 0, $height - 1, $color, $color);
imagearc($_dest['rsrc'], $width - $radius, $height - $radius, $radius * 2, $radius * 2, 0, 90, $color);
imagefilltoborder($_dest['rsrc'], $width - 1, $height - 1, $color, $color);
return $_dest;
}
