/**
* Returns a copy of the image
*
* @param $trueColor True if the new image should be truecolor
* @return GDImage_Image
*/
protected function copyAsNew($trueColor = false)
{
$width = $this->getWidth();
$height = $this->getHeight();
if ($trueColor) {
$new = GDImage_TrueColorImage::create($width, $height);
} else {
$new = GDImage_PaletteImage::create($width, $height);
}
// copy transparency of source to target
if ($this->isTransparent()) {
$rgb = $this->getTransparentColorRGB();
if (is_array($rgb)) {
$tci = $new->allocateColor($rgb['red'], $rgb['green'], $rgb['blue']);
$new->fill(0, 0, $tci);
$new->setTransparentColor($tci);
}
}
imageCopy($new->getHandle(), $this->handle, 0, 0, 0, 0, $width, $height);
return $new;
}
/**
* Returns a resized image
*
* @param GDImage_Image $img
* @param smart_coordinate $width
* @param smart_coordinate $height
* @param string $fit
* @param string $scale
* @return GDImage_Image
*/
function execute($img, $width, $height, $fit, $scale = 'any')
{
$dim = $this->prepareDimensions($img, $width, $height, $fit);
if ($scale === 'down' && ($dim['width'] >= $img->getWidth() && $dim['height'] >= $img->getHeight()) || $scale === 'up' && ($dim['width'] <= $img->getWidth() && $dim['height'] <= $img->getHeight())) {
$dim = array('width' => $img->getWidth(), 'height' => $img->getHeight());
}
if ($dim['width'] <= 0 || $dim['height'] <= 0) {
JError::raiseError(500, JText::_('JLIB_GDIMAGE_ERROR_DIMENSIONS_ZERO'));
return false;
}
if ($img->isTransparent()) {
$new = GDImage_PaletteImage::create($dim['width'], $dim['height']);
$new->copyTransparencyFrom($img);
imagecopyresized($new->getHandle(), $img->getHandle(), 0, 0, 0, 0, $new->getWidth(), $new->getHeight(), $img->getWidth(), $img->getHeight());
} else {
$new = GDImage_TrueColorImage::create($dim['width'], $dim['height']);
$new->alphaBlending(false);
$new->saveAlpha(true);
imagecopyresampled($new->getHandle(), $img->getHandle(), 0, 0, 0, 0, $new->getWidth(), $new->getHeight(), $img->getWidth(), $img->getHeight());
$new->alphaBlending(true);
}
return $new;
}
/**
* Factory method for creating a palette image
*
* @param int $width
* @param int $height
*/
static function createPaletteImage($width, $height)
{
return GDImage_PaletteImage::create($width, $height);
}