/**
* Create a cropped version of a picture.
*
* Note that cropped images are *always* created as jpeg image files!
* @param string $source_path The source image file path
* @param string $target_path The target image file path
* @param integer $x1 The left border of the cropped image
* @param integer $y1 The top border of the cropped image
* @param integer $x2 The right border of the cropped image
* @param integer $y2 The bottom border of the cropped image
* @param boolean $force If true, the target image is forced
* to be overwritten
* @param integer $quality The desired jpeg thumbnail quality
* @return bool True on success, false otherwise.
* @static
*/
static function crop($source_path, $target_path, $x1, $y1, $x2, $y2, $force = false, $quality = 90)
{
//DBG::log("crop($source_path, $target_path, $x1, $y1, $x2, $y2, $force, $quality): Entered");
File::path_relative_to_root($source_path);
$xs = $ys = null;
list($xs, $ys) = getimagesize(ASCMS_DOCUMENT_ROOT . '/' . $source_path);
// Fix coordinates that are out of range:
// - Reset negative and too large values to the original size
if ($x1 < 0) {
$x1 = 0;
}
if ($y1 < 0) {
$y1 = 0;
}
if ($x2 < 0) {
$x2 = $xs - 1;
}
if ($y2 < 0) {
$y2 = $ys - 1;
}
if ($x1 >= $xs) {
$x1 = 0;
}
if ($y1 >= $ys) {
$y1 = 0;
}
if ($x2 >= $xs) {
$x2 = $xs - 1;
}
if ($y2 >= $ys) {
$y2 = $ys - 1;
}
// - Flip left and right or top and bottom if the former are greater
if ($x1 > $x2) {
$tmp = $x1;
$x1 = $x2;
$x2 = $tmp;
}
if ($y1 > $y2) {
$tmp = $y1;
$y1 = $y2;
$y2 = $tmp;
}
// Target size is now at most the original size.
// Calculate target size
$xs = $x2 - $x1;
$ys = $y2 - $y1;
$source_image = self::load($source_path);
if (!$source_image) {
return false;
}
$target_image = false;
if (function_exists('imagecreatetruecolor')) {
$target_image = @imagecreatetruecolor($xs, $ys);
}
if (!$target_image) {
$target_image = ImageCreate($xs, $ys);
}
imagecopy($target_image, $source_image, 0, 0, $x1, $y1, $xs, $ys);
return self::saveJpeg($target_image, $target_path, $quality, $force);
}
