+ // else constrain both dimensions
+
+ elseif($width > $height) {
+ $dest_width = $max;
+ $dest_height = intval(( $height * $max ) / $width);
+ }
+ else {
+ $dest_width = intval(( $width * $max ) / $height);
+ $dest_height = $max;
+ }
+ }
+ else {
+ if( $width > $max ) {
+ $dest_width = $max;
+ $dest_height = intval(( $height * $max ) / $width);
+ }
+ else {
+ if( $height > $max ) {
+
+ // very tall image (greater than 16:9)
+ // but width is OK - don't do anything
+
+ if((($height * 9) / 16) > $width) {
+ $dest_width = $width;
+ $dest_height = $height;
+ }
+ else {
+ $dest_width = intval(( $width * $max ) / $height);
+ $dest_height = $max;
+ }
+ }
+ else {
+ $dest_width = $width;
+ $dest_height = $height;
+ }
+ }
+ }
+
+
+ if($this->is_imagick()) {
+ /**
+ * If it is not animated, there will be only one iteration here,
+ * so don't bother checking
+ */
+ // Don't forget to go back to the first frame
+ $this->image->setFirstIterator();
+ do {
+
+ // FIXME - implement horizantal bias for scaling as in followin GD functions
+ // to allow very tall images to be constrained only horizontally.
+
+ $this->image->scaleImage($dest_width, $dest_height);
+ } while ($this->image->nextImage());
+
+ // These may not be necessary any more
+ $this->width = $this->image->getImageWidth();
+ $this->height = $this->image->getImageHeight();
+
+ return;
+ }
+
+
+ $dest = imagecreatetruecolor( $dest_width, $dest_height );
+ imagealphablending($dest, false);
+ imagesavealpha($dest, true);
+ if ($this->type=='image/png') imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
+ imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
+ if($this->image)
+ imagedestroy($this->image);
+ $this->image = $dest;
+ $this->width = imagesx($this->image);
+ $this->height = imagesy($this->image);
+ }
+
+ public function rotate($degrees) {
+ if(!$this->is_valid())
+ return FALSE;
+
+ if($this->is_imagick()) {
+ $this->image->setFirstIterator();
+ do {
+ $this->image->rotateImage(new ImagickPixel(), -$degrees); // ImageMagick rotates in the opposite direction of imagerotate()
+ } while ($this->image->nextImage());
+ return;
+ }
+
+ $this->image = imagerotate($this->image,$degrees,0);
+ $this->width = imagesx($this->image);
+ $this->height = imagesy($this->image);
+ }
+
+ public function flip($horiz = true, $vert = false) {
+ if(!$this->is_valid())
+ return FALSE;
+
+ if($this->is_imagick()) {
+ $this->image->setFirstIterator();
+ do {
+ if($horiz) $this->image->flipImage();
+ if($vert) $this->image->flopImage();
+ } while ($this->image->nextImage());
+ return;
+ }
+
+ $w = imagesx($this->image);
+ $h = imagesy($this->image);
+ $flipped = imagecreate($w, $h);
+ if($horiz) {
+ for ($x = 0; $x < $w; $x++) {
+ imagecopy($flipped, $this->image, $x, 0, $w - $x - 1, 0, 1, $h);
+ }
+ }
+ if($vert) {
+ for ($y = 0; $y < $h; $y++) {
+ imagecopy($flipped, $this->image, 0, $y, 0, $h - $y - 1, $w, 1);
+ }
+ }
+ $this->image = $flipped;
+ }
+
+ public function orient($filename) {
+ // based off comment on http://php.net/manual/en/function.imagerotate.php
+
+ if(!$this->is_valid())
+ return FALSE;
+
+ if( (! function_exists('exif_read_data')) || ($this->getType() !== 'image/jpeg') )
+ return;
+
+ $exif = @exif_read_data($filename);
+
+ if(! $exif)
+ return;
+
+ $ort = $exif['Orientation'];
+
+ switch($ort)
+ {
+ case 1: // nothing
+ break;
+
+ case 2: // horizontal flip
+ $this->flip();
+ break;
+
+ case 3: // 180 rotate left
+ $this->rotate(180);
+ break;
+
+ case 4: // vertical flip
+ $this->flip(false, true);
+ break;
+
+ case 5: // vertical flip + 90 rotate right
+ $this->flip(false, true);
+ $this->rotate(-90);
+ break;
+
+ case 6: // 90 rotate right
+ $this->rotate(-90);
+ break;
+
+ case 7: // horizontal flip + 90 rotate right
+ $this->flip();
+ $this->rotate(-90);
+ break;
+
+ case 8: // 90 rotate left
+ $this->rotate(90);
+ break;
+ }
+ }
+
+
+
+ public function scaleImageUp($min) {
+ if(!$this->is_valid())
+ return FALSE;
+
+
+ $width = $this->getWidth();
+ $height = $this->getHeight();
+
+ $dest_width = $dest_height = 0;
+
+ if((! $width)|| (! $height))
+ return FALSE;
+
+ if($width < $min && $height < $min) {
+ if($width > $height) {
+ $dest_width = $min;
+ $dest_height = intval(( $height * $min ) / $width);
+ }
+ else {
+ $dest_width = intval(( $width * $min ) / $height);
+ $dest_height = $min;
+ }
+ }
+ else {
+ if( $width < $min ) {
+ $dest_width = $min;
+ $dest_height = intval(( $height * $min ) / $width);
+ }
+ else {
+ if( $height < $min ) {
+ $dest_width = intval(( $width * $min ) / $height);
+ $dest_height = $min;
+ }
+ else {
+ $dest_width = $width;
+ $dest_height = $height;
+ }
+ }
+ }
+
+ if($this->is_imagick())
+ return $this->scaleImage($dest_width,$dest_height);
+
+ $dest = imagecreatetruecolor( $dest_width, $dest_height );
+ imagealphablending($dest, false);
+ imagesavealpha($dest, true);
+ if ($this->type=='image/png') imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
+ imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
+ if($this->image)
+ imagedestroy($this->image);
+ $this->image = $dest;
+ $this->width = imagesx($this->image);
+ $this->height = imagesy($this->image);
+ }
+
+
+
+ public function scaleImageSquare($dim) {
+ if(!$this->is_valid())
+ return FALSE;
+
+ if($this->is_imagick()) {
+ $this->image->setFirstIterator();
+ do {
+ $this->image->scaleImage($dim, $dim);
+ } while ($this->image->nextImage());
+ return;
+ }
+
+ $dest = imagecreatetruecolor( $dim, $dim );
+ imagealphablending($dest, false);
+ imagesavealpha($dest, true);
+ if ($this->type=='image/png') imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
+ imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dim, $dim, $this->width, $this->height);
+ if($this->image)
+ imagedestroy($this->image);
+ $this->image = $dest;
+ $this->width = imagesx($this->image);
+ $this->height = imagesy($this->image);
+ }
+
+
+ public function cropImage($max,$x,$y,$w,$h) {
+ if(!$this->is_valid())
+ return FALSE;
+
+ if($this->is_imagick()) {
+ $this->image->setFirstIterator();
+ do {
+ $this->image->cropImage($w, $h, $x, $y);
+ /**
+ * We need to remove the canva,
+ * or the image is not resized to the crop:
+ * http://php.net/manual/en/imagick.cropimage.php#97232
+ */
+ $this->image->setImagePage(0, 0, 0, 0);
+ } while ($this->image->nextImage());
+ return $this->scaleImage($max);