/**
* Stores an image on the disk and in the database
*
- * @param object $file the uploaded file
- * @param boolean $ajax If the image cames from an ajax call (dnd)
+ * @param object $file The uploaded file
+ * @param boolean $ajax If the image cames from an ajax call (dnd)
+ * @param array $cropping Cropping properties
*
* @return bool|int
*/
- public function store($file, $ajax = false)
+ public function store($file, $ajax = false, $cropping = null)
{
/** TODO: fix max size (by preferences ?) */
global $zdb;
);
}
+ // Source image must have minimum dimensions to match the cropping process requirements
+ // and ensure the final picture will fit the maximum allowed resizing dimensions.
+ if (isset($cropping['ratio']) && isset($cropping['focus'])) {
+ if ($current[0] < $this->mincropsize || $current[1] < $this->mincropsize) {
+ $min_current = min($current[0], $current[1]);
+ Analog::log(
+ '[' . $class . '] Image is too small. The minimum image side size allowed is ' .
+ $this->mincropsize . 'px, but current is ' . $min_current . 'px.',
+ Analog::ERROR
+ );
+ return self::IMAGE_TOO_SMALL;
+ } else {
+ Analog::log('[' . $class . '] Image dimensions are OK, proceed', Analog::DEBUG);
+ }
+ }
+
$this->delete();
$new_file = $this->store_path .
if ($current[0] > $this->max_width || $current[1] > $this->max_height) {
/** FIXME: what if image cannot be resized?
Should'nt we want to stop the process here? */
- $this->resizeImage($new_file, $extension);
+ $this->resizeImage($new_file, $extension, null, $cropping);
}
return $this->storeInDb($zdb, $this->db_id, $new_file, $extension);
}
/**
- * Resize the image if it exceeds max allowed sizes
+ * Resize and eventually crop the image if it exceeds max allowed sizes
*
- * @param string $source the source image
- * @param string $ext file's extension
- * @param string $dest the destination image.
- * If null, we'll use the source image. Defaults to null
+ * @param string $source The source image
+ * @param string $ext File's extension
+ * @param string $dest The destination image.
+ * If null, we'll use the source image. Defaults to null
+ * @param array $cropping Cropping properties
*
* @return void|false
*/
- private function resizeImage($source, $ext, $dest = null)
+ private function resizeImage($source, $ext, $dest = null, $cropping = null)
{
$class = get_class($this);
$ratio = $cur_width / $cur_height;
- // calculate image size according to ratio
- if ($cur_width > $cur_height) {
- $h = round($w / $ratio);
+ // Define cropping variables if necessary.
+ $thumb_cropped = false;
+ // Cropping is based on the smallest side of the source in order to
+ // provide as less focusing options as possible if the source doesn't
+ // fit the final ratio (center, top, bottom, left, right).
+ $min_size = min($cur_width, $cur_height);
+ // Cropping dimensions.
+ $crop_width = $min_size;
+ $crop_height = $min_size;
+ // Cropping focus.
+ $crop_x = 0;
+ $crop_y = 0;
+ if (isset($cropping['ratio']) && isset($cropping['focus'])) {
+ // Calculate cropping dimensions
+ switch ($cropping['ratio']) {
+ case 'portrait_ratio':
+ // Calculate cropping dimensions
+ if ($ratio < 1) {
+ $crop_height = ceil($crop_width * 4 / 3);
+ } else {
+ $crop_width = ceil($crop_height * 3 / 4);
+ }
+ // Calculate resizing dimensions
+ $w = ceil($h * 3 / 4);
+ break;
+ case 'landscape_ratio':
+ // Calculate cropping dimensions
+ if ($ratio > 1) {
+ $crop_width = ceil($crop_height * 4 / 3);
+ } else {
+ $crop_height = ceil($crop_width * 3 / 4);
+ }
+ // Calculate resizing dimensions
+ $h = ceil($w * 3 / 4);
+ break;
+ }
+ // Calculate focus coordinates
+ switch ($cropping['focus']) {
+ case 'center':
+ if ($ratio > 1) {
+ $crop_x = ceil(($cur_width - $crop_width) / 2);
+ } elseif ($ratio == 1) {
+ $crop_x = ceil(($cur_width - $crop_width) / 2);
+ $crop_y = ceil(($cur_height - $crop_height) / 2);
+ } else {
+ $crop_y = ceil(($cur_height - $crop_height) / 2);
+ }
+ break;
+ case 'top':
+ $crop_x = ceil(($cur_width - $crop_width) / 2);
+ break;
+ case 'bottom':
+ $crop_y = $cur_height - $crop_height;
+ break;
+ case 'right':
+ $crop_x = $cur_width - $crop_width;
+ break;
+ }
+ // Cropped image.
+ $thumb_cropped = imagecreatetruecolor($crop_width, $crop_height);
+ // Cropped ratio.
+ $ratio = $crop_width / $crop_height;
+ // Otherwise, calculate image size according to the source's ratio.
} else {
- $w = round($h * $ratio);
+ if ($cur_width > $cur_height) {
+ $h = round($w / $ratio);
+ } else {
+ $w = round($h * $ratio);
+ }
}
+ // Resized image.
$thumb = imagecreatetruecolor($w, $h);
+
+ $image = false;
switch ($ext) {
case 'jpg':
$image = imagecreatefromjpeg($source);
- imagecopyresampled($thumb, $image, 0, 0, 0, 0, $w, $h, $cur_width, $cur_height);
+ // Crop
+ if ($thumb_cropped !== false) {
+ // First, crop.
+ imagecopyresampled($thumb_cropped, $image, 0, 0, $crop_x, $crop_y, $cur_width, $cur_height, $cur_width, $cur_height);
+ // Then, resize.
+ imagecopyresampled($thumb, $thumb_cropped, 0, 0, 0, 0, $w, $h, $crop_width, $crop_height);
+ // Resize
+ } else {
+ imagecopyresampled($thumb, $image, 0, 0, 0, 0, $w, $h, $cur_width, $cur_height);
+ }
imagejpeg($thumb, $dest);
break;
case 'png':
$image = imagecreatefrompng($source);
// Turn off alpha blending and set alpha flag. That prevent alpha
// transparency to be saved as an arbitrary color (black in my tests)
- imagealphablending($thumb, false);
imagealphablending($image, false);
- imagesavealpha($thumb, true);
imagesavealpha($image, true);
- imagecopyresampled($thumb, $image, 0, 0, 0, 0, $w, $h, $cur_width, $cur_height);
+ imagealphablending($thumb, false);
+ imagesavealpha($thumb, true);
+ // Crop
+ if ($thumb_cropped !== false) {
+ imagealphablending($thumb_cropped, false);
+ imagesavealpha($thumb_cropped, true);
+ // First, crop.
+ imagecopyresampled($thumb_cropped, $image, 0, 0, $crop_x, $crop_y, $cur_width, $cur_height, $cur_width, $cur_height);
+ // Then, resize.
+ imagecopyresampled($thumb, $thumb_cropped, 0, 0, 0, 0, $w, $h, $crop_width, $crop_height);
+ // Resize
+ } else {
+ imagecopyresampled($thumb, $image, 0, 0, 0, 0, $w, $h, $cur_width, $cur_height);
+ }
imagepng($thumb, $dest);
break;
case 'gif':
$image = imagecreatefromgif($source);
- imagecopyresampled($thumb, $image, 0, 0, 0, 0, $w, $h, $cur_width, $cur_height);
+ // Crop
+ if ($thumb_cropped !== false) {
+ // First, crop.
+ imagecopyresampled($thumb_cropped, $image, 0, 0, $crop_x, $crop_y, $cur_width, $cur_height, $cur_width, $cur_height);
+ // Then, resize.
+ imagecopyresampled($thumb, $thumb_cropped, 0, 0, 0, 0, $w, $h, $crop_width, $crop_height);
+ // Resize
+ } else {
+ imagecopyresampled($thumb, $image, 0, 0, 0, 0, $w, $h, $cur_width, $cur_height);
+ }
imagegif($thumb, $dest);
break;
case 'webp':
$image = imagecreatefromwebp($source);
- imagecopyresampled($thumb, $image, 0, 0, 0, 0, $w, $h, $cur_width, $cur_height);
+ // Crop
+ if ($thumb_cropped !== false) {
+ // First, crop.
+ imagecopyresampled($thumb_cropped, $image, 0, 0, $crop_x, $crop_y, $cur_width, $cur_height, $cur_width, $cur_height);
+ // Then, resize.
+ imagecopyresampled($thumb, $thumb_cropped, 0, 0, 0, 0, $w, $h, $crop_width, $crop_height);
+ // Resize
+ } else {
+ imagecopyresampled($thumb, $image, 0, 0, 0, 0, $w, $h, $cur_width, $cur_height);
+ }
imagewebp($thumb, $dest);
break;
}
Projects / galette.git / blobdiff