From e6dadb215e9e08491ae57ab851960a0973d3f704 Mon Sep 17 00:00:00 2001
From: Klaus Weidenbach <Klaus.Weidenbach@gmx.net>
Date: Tue, 5 Feb 2019 23:03:03 +0100
Subject: Refactor photo_driver to use namespaces.

Add simple UnitTest, but it is not yet very meaningful.
---
 Zotlabs/Photo/PhotoGd.php | 194 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 194 insertions(+)
 create mode 100644 Zotlabs/Photo/PhotoGd.php

(limited to 'Zotlabs/Photo/PhotoGd.php')

diff --git a/Zotlabs/Photo/PhotoGd.php b/Zotlabs/Photo/PhotoGd.php
new file mode 100644
index 000000000..1143c565c
--- /dev/null
+++ b/Zotlabs/Photo/PhotoGd.php
@@ -0,0 +1,194 @@
+<?php
+
+namespace Zotlabs\Photo;
+
+/**
+ * @brief GD photo driver.
+ *
+ */
+class PhotoGd extends PhotoDriver {
+
+	/**
+	 * {@inheritDoc}
+	 * @see \Zotlabs\Photo\PhotoDriver::supportedTypes()
+	 */
+	public function supportedTypes() {
+		$t = [];
+		$t['image/jpeg'] = 'jpg';
+		if(imagetypes() & IMG_PNG)
+			$t['image/png'] = 'png';
+		if(imagetypes() & IMG_GIF)
+			$t['image/gif'] = 'gif';
+
+		return $t;
+	}
+
+	protected function load($data, $type) {
+		$this->valid = false;
+		if(! $data)
+			return;
+
+		$this->image = @imagecreatefromstring($data);
+		if($this->image !== false) {
+			$this->valid  = true;
+			$this->setDimensions();
+			imagealphablending($this->image, false);
+			imagesavealpha($this->image, true);
+		}
+	}
+
+	protected function setDimensions() {
+		$this->width  = imagesx($this->image);
+		$this->height = imagesy($this->image);
+	}
+
+	/**
+	 * @brief GD driver does not preserve EXIF, so not need to clear it.
+	 *
+	 * @return void
+	 */
+	public function clearexif() {
+		return;
+	}
+
+	protected function destroy() {
+		if($this->is_valid()) {
+			imagedestroy($this->image);
+		}
+	}
+
+	/**
+	 * @brief Return a PHP image resource of the current image.
+	 *
+	 * @see \Zotlabs\Photo\PhotoDriver::getImage()
+	 *
+	 * @return boolean|resource
+	 */
+	public function getImage() {
+		if(! $this->is_valid())
+			return false;
+
+		return $this->image;
+	}
+
+	public function doScaleImage($dest_width, $dest_height) {
+
+		$dest = imagecreatetruecolor($dest_width, $dest_height);
+		$width = imagesx($this->image);
+		$height = imagesy($this->image);
+
+		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;
+		$this->setDimensions();
+	}
+
+	public function rotate($degrees) {
+		if(! $this->is_valid())
+			return false;
+
+		$this->image = imagerotate($this->image, $degrees, 0);
+		$this->setDimensions();
+	}
+
+	public function flip($horiz = true, $vert = false) {
+		if(! $this->is_valid())
+			return false;
+
+		$w = imagesx($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;
+		$this->setDimensions(); // Shouldn't really be necessary
+	}
+
+	public function cropImage($max, $x, $y, $w, $h) {
+		if(!$this->is_valid())
+			return false;
+
+		$dest = imagecreatetruecolor($max, $max);
+		imagealphablending($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, $x, $y, $max, $max, $w, $h);
+		if($this->image)
+			imagedestroy($this->image);
+
+		$this->image = $dest;
+		$this->setDimensions();
+	}
+
+	public function cropImageRect($maxx, $maxy, $x, $y, $w, $h) {
+		if(! $this->is_valid())
+			return false;
+
+		$dest = imagecreatetruecolor($maxx, $maxy);
+		imagealphablending($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, $x, $y, $maxx, $maxy, $w, $h);
+		if($this->image)
+			imagedestroy($this->image);
+
+		$this->image = $dest;
+		$this->setDimensions();
+	}
+
+	/**
+	 * {@inheritDoc}
+	 * @see \Zotlabs\Photo\PhotoDriver::imageString()
+	 */
+	public function imageString() {
+		if(! $this->is_valid())
+			return false;
+
+		$quality = false;
+
+		ob_start();
+
+		switch($this->getType()){
+			case 'image/png':
+				$quality = get_config('system', 'png_quality');
+				if((! $quality) || ($quality > 9))
+					$quality = PNG_QUALITY;
+
+				\imagepng($this->image, NULL, $quality);
+				break;
+			case 'image/jpeg':
+			// gd can lack imagejpeg(), but we verify during installation it is available
+			default:
+				$quality = get_config('system', 'jpeg_quality');
+				if((! $quality) || ($quality > 100))
+					$quality = JPEG_QUALITY;
+
+				\imagejpeg($this->image, NULL, $quality);
+				break;
+		}
+		$string = ob_get_contents();
+		ob_end_clean();
+
+		return $string;
+	}
+
+}
-- 
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