Refactor photo_driver to use namespaces.

Add simple UnitTest, but it is not yet very meaningful.

1 files changed, 218 insertions, 0 deletions

diff --git a/Zotlabs/Photo/PhotoImagick.php b/Zotlabs/Photo/PhotoImagick.php
new file mode 100644
index 000000000..373bac40f
--- /dev/null
+++ b/Zotlabs/Photo/PhotoImagick.php
@@ -0,0 +1,218 @@
+<?php
+
+namespace Zotlabs\Photo;
+
+/**
+ * @brief ImageMagick photo driver.
+ */
+class PhotoImagick extends PhotoDriver {
+
+	public function supportedTypes() {
+		return [
+			'image/jpeg' => 'jpg',
+			'image/png' => 'png',
+			'image/gif' => 'gif',
+		];
+	}
+
+	private function get_FormatsMap() {
+		return [
+			'image/jpeg' => 'JPG',
+			'image/png' => 'PNG',
+			'image/gif' => 'GIF',
+		];
+	}
+
+
+	protected function load($data, $type) {
+		$this->valid = false;
+		$this->image = new \Imagick();
+
+		if(! $data)
+			return;
+
+		try {
+			$this->image->readImageBlob($data);
+		} catch(\Exception $e) {
+			logger('Imagick readImageBlob() exception:' . print_r($e, true));
+			return;
+		}
+
+		/*
+		 * 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;
+			}
+		}
+	}
+
+	protected function destroy() {
+		if($this->is_valid()) {
+			$this->image->clear();
+			$this->image->destroy();
+		}
+	}
+
+	protected function setDimensions() {
+		$this->width = $this->image->getImageWidth();
+		$this->height = $this->image->getImageHeight();
+	}
+
+	/**
+	 * @brief Strips the image of all profiles and comments.
+	 *
+	 * Keep ICC profile for better colors.
+	 *
+	 * @see \Zotlabs\Photo\PhotoDriver::clearexif()
+	 */
+	public function clearexif() {
+		$profiles = $this->image->getImageProfiles('icc', true);
+
+		$this->image->stripImage();
+
+		if(! empty($profiles)) {
+			$this->image->profileImage('icc', $profiles['icc']);
+		}
+	}
+
+
+	/**
+	 * @brief Return a \Imagick object of the current image.
+	 *
+	 * @see \Zotlabs\Photo\PhotoDriver::getImage()
+	 *
+	 * @return boolean|\Imagick
+	 */
+	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 canvas,
+			 * 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, $max);
+	}
+
+	public function cropImageRect($maxx, $maxy, $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 canvas,
+			 * 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());
+
+		$this->doScaleImage($maxx, $maxy);
+	}
+
+	public function imageString() {
+		if(! $this->is_valid())
+			return false;
+
+		/* Clean it */
+		$this->image = $this->image->deconstructImages();
+
+		return $this->image->getImagesBlob();
+	}
+
+}