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Diffstat (limited to 'include/photo/photo_imagick.php')
| -rw-r--r-- | include/photo/photo_imagick.php | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/include/photo/photo_imagick.php b/include/photo/photo_imagick.php new file mode 100644 index 000000000..7282898b4 --- /dev/null +++ b/include/photo/photo_imagick.php @@ -0,0 +1,173 @@ +<?php /** @file */ + + +require_once('include/photo/photo_driver.php'); + + +class photo_imagick extends photo_driver { + + + function supportedTypes() { + return array( + 'image/jpeg' => 'jpg', + 'image/png' => 'png', + 'image/gif' => 'gif' + ); + } + + public function get_FormatsMap() { + return array( + 'image/jpeg' => 'JPG', + 'image/png' => 'PNG', + 'image/gif' => 'GIF' + ); + } + + + function load($data, $type) { + $this->valid = false; + $this->image = new Imagick(); + $this->image->readImageBlob($data); + + + /** + * Setup the image to the format it will be saved to + */ + + $map = $this->get_FormatsMap(); + $format = $map[$type]; + + if($this->image) { + $this->image->setFormat($format); + + // Always coalesce, if it is not a multi-frame image it won't hurt anyway + $this->image = $this->image->coalesceImages(); + + + $this->valid = true; + $this->setDimensions(); + + /** + * setup the compression here, so we'll do it only once + */ + switch($this->getType()) { + case "image/png": + $quality = get_config('system','png_quality'); + if((! $quality) || ($quality > 9)) + $quality = PNG_QUALITY; + /** + * From http://www.imagemagick.org/script/command-line-options.php#quality: + * + * 'For the MNG and PNG image formats, the quality value sets + * the zlib compression level (quality / 10) and filter-type (quality % 10). + * The default PNG "quality" is 75, which means compression level 7 with adaptive PNG filtering, + * unless the image has a color map, in which case it means compression level 7 with no PNG filtering' + */ + $quality = $quality * 10; + $this->image->setCompressionQuality($quality); + break; + case "image/jpeg": + $quality = get_config('system','jpeg_quality'); + if((! $quality) || ($quality > 100)) + $quality = JPEG_QUALITY; + $this->image->setCompressionQuality($quality); + + default: + break; + } + } + } + + public function destroy() { + if($this->is_valid()) { + $this->image->clear(); + $this->image->destroy(); + } + } + + + public function setDimensions() { + $this->width = $this->image->getImageWidth(); + $this->height = $this->image->getImageHeight(); + } + + + public function getImage() { + if(!$this->is_valid()) + return FALSE; + + $this->image = $this->image->deconstructImages(); + return $this->image; + } + + public function doScaleImage($dest_width,$dest_height) { + + /** + * 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 { + $this->image->scaleImage($dest_width, $dest_height); + } while ($this->image->nextImage()); + + $this->setDimensions(); + } + + public function rotate($degrees) { + if(!$this->is_valid()) + return FALSE; + + $this->image->setFirstIterator(); + do { + // ImageMagick rotates in the opposite direction of imagerotate() + $this->image->rotateImage(new ImagickPixel(), -$degrees); + } while ($this->image->nextImage()); + + $this->setDimensions(); + } + + public function flip($horiz = true, $vert = false) { + if(!$this->is_valid()) + return FALSE; + + $this->image->setFirstIterator(); + do { + if($horiz) $this->image->flipImage(); + if($vert) $this->image->flopImage(); + } while ($this->image->nextImage()); + + $this->setDimensions(); // Shouldn't really be necessary + } + + public function cropImage($max,$x,$y,$w,$h) { + if(!$this->is_valid()) + return FALSE; + + $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()); + + $this->doScaleImage($max); + } + + public function imageString() { + if(!$this->is_valid()) + return FALSE; + + /* Clean it */ + $this->image = $this->image->deconstructImages(); + return $this->image->getImagesBlob(); + } + + + +}
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