Added: Incorrect image orientation

rainloop/v/0.0.0/app/libraries/Imagine/Gmagick/Layers.php

@@ -0,0 +1,272 @@
+<?php
+
+/*
+ * This file is part of the Imagine package.
+ *
+ * (c) Bulat Shakirzyanov <mallluhuct@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Imagine\Gmagick;
+
+use Imagine\Image\AbstractLayers;
+use Imagine\Exception\RuntimeException;
+use Imagine\Exception\NotSupportedException;
+use Imagine\Exception\OutOfBoundsException;
+use Imagine\Exception\InvalidArgumentException;
+use Imagine\Image\Metadata\MetadataBag;
+use Imagine\Image\Palette\PaletteInterface;
+
+class Layers extends AbstractLayers
+{
+    /**
+     * @var Image
+     */
+    private $image;
+
+    /**
+     * @var \Gmagick
+     */
+    private $resource;
+
+    /**
+     * @var integer
+     */
+    private $offset = 0;
+
+    /**
+     * @var array
+     */
+    private $layers = array();
+
+    /**
+     * @var PaletteInterface
+     */
+    private $palette;
+
+    public function __construct(Image $image, PaletteInterface $palette, \Gmagick $resource)
+    {
+        $this->image = $image;
+        $this->resource = $resource;
+        $this->palette = $palette;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function merge()
+    {
+        foreach ($this->layers as $offset => $image) {
+            try {
+                $this->resource->setimageindex($offset);
+                $this->resource->setimage($image->getGmagick());
+            } catch (\GmagickException $e) {
+                throw new RuntimeException('Failed to substitute layer', $e->getCode(), $e);
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function coalesce()
+    {
+        throw new NotSupportedException('Gmagick does not support coalescing');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function animate($format, $delay, $loops)
+    {
+        if ('gif' !== strtolower($format)) {
+            throw new NotSupportedException('Animated picture is currently only supported on gif');
+        }
+
+        if (!is_int($loops) || $loops < 0) {
+            throw new InvalidArgumentException('Loops must be a positive integer.');
+        }
+
+        if (null !== $delay && (!is_int($delay) || $delay < 0)) {
+            throw new InvalidArgumentException('Delay must be either null or a positive integer.');
+        }
+
+        try {
+            foreach ($this as $offset => $layer) {
+                $this->resource->setimageindex($offset);
+                $this->resource->setimageformat($format);
+
+                if (null !== $delay) {
+                    $this->resource->setimagedelay($delay / 10);
+                }
+
+                $this->resource->setimageiterations($loops);
+            }
+        } catch (\GmagickException $e) {
+            throw new RuntimeException('Failed to animate layers', $e->getCode(), $e);
+        }
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function current()
+    {
+        return $this->extractAt($this->offset);
+    }
+
+    /**
+     * Tries to extract layer at given offset
+     *
+     * @param  integer          $offset
+     * @return Image
+     * @throws RuntimeException
+     */
+    private function extractAt($offset)
+    {
+        if (!isset($this->layers[$offset])) {
+            try {
+                $this->resource->setimageindex($offset);
+                $this->layers[$offset] = new Image($this->resource->getimage(), $this->palette, new MetadataBag());
+            } catch (\GmagickException $e) {
+                throw new RuntimeException(sprintf('Failed to extract layer %d', $offset), $e->getCode(), $e);
+            }
+        }
+
+        return $this->layers[$offset];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function key()
+    {
+        return $this->offset;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function next()
+    {
+        ++$this->offset;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function rewind()
+    {
+        $this->offset = 0;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function valid()
+    {
+        return $this->offset < count($this);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function count()
+    {
+        try {
+            return $this->resource->getnumberimages();
+        } catch (\GmagickException $e) {
+            throw new RuntimeException('Failed to count the number of layers', $e->getCode(), $e);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function offsetExists($offset)
+    {
+        return is_int($offset) && $offset >= 0 && $offset < count($this);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function offsetGet($offset)
+    {
+        return $this->extractAt($offset);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function offsetSet($offset, $image)
+    {
+        if (!$image instanceof Image) {
+            throw new InvalidArgumentException('Only a Gmagick Image can be used as layer');
+        }
+
+        if (null === $offset) {
+            $offset = count($this) - 1;
+        } else {
+            if (!is_int($offset)) {
+                throw new InvalidArgumentException('Invalid offset for layer, it must be an integer');
+            }
+
+            if (count($this) < $offset || 0 > $offset) {
+                throw new OutOfBoundsException(sprintf('Invalid offset for layer, it must be a value between 0 and %d, %d given', count($this), $offset));
+            }
+
+            if (isset($this[$offset])) {
+                unset($this[$offset]);
+                $offset = $offset - 1;
+            }
+        }
+
+        $frame = $image->getGmagick();
+
+        try {
+            if (count($this) > 0) {
+                $this->resource->setimageindex($offset);
+                $this->resource->nextimage();
+            }
+            $this->resource->addimage($frame);
+
+            /**
+             * ugly hack to bypass issue https://bugs.php.net/bug.php?id=64623
+             */
+            if (count($this) == 2) {
+                $this->resource->setimageindex($offset+1);
+                $this->resource->nextimage();
+                $this->resource->addimage($frame);
+                unset($this[0]);
+            }
+        } catch (\GmagickException $e) {
+            throw new RuntimeException('Unable to set the layer', $e->getCode(), $e);
+        }
+
+        $this->layers = array();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function offsetUnset($offset)
+    {
+        try {
+            $this->extractAt($offset);
+        } catch (RuntimeException $e) {
+            return;
+        }
+
+        try {
+            $this->resource->setimageindex($offset);
+            $this->resource->removeimage();
+        } catch (\GmagickException $e) {
+            throw new RuntimeException('Unable to remove layer', $e->getCode(), $e);
+        }
+    }
+}