From 3413fe6bfd423d45d083ff4ed62c0f72c2cc272f Mon Sep 17 00:00:00 2001 From: Bharat Mediratta Date: Thu, 28 May 2009 06:11:53 +0800 Subject: Rename 'kohana' to 'system' to conform to the Kohana filesystem layout. I'm comfortable with us not clearly drawing the distinction about the fact that it's Kohana. Signed-off-by: Gallery Role Account --- system/libraries/drivers/Image/ImageMagick.php | 222 +++++++++++++++++++++++++ 1 file changed, 222 insertions(+) create mode 100644 system/libraries/drivers/Image/ImageMagick.php (limited to 'system/libraries/drivers/Image/ImageMagick.php') diff --git a/system/libraries/drivers/Image/ImageMagick.php b/system/libraries/drivers/Image/ImageMagick.php new file mode 100644 index 00000000..4b381fd6 --- /dev/null +++ b/system/libraries/drivers/Image/ImageMagick.php @@ -0,0 +1,222 @@ +ext = (PHP_SHLIB_SUFFIX === 'dll') ? '.exe' : ''; + + // Check to make sure the provided path is correct + if ( ! is_file(realpath($config['directory']).'/convert'.$this->ext)) + throw new Kohana_Exception('image.imagemagick.not_found', 'convert'.$this->ext); + + // Set the installation directory + $this->dir = str_replace('\\', '/', realpath($config['directory'])).'/'; + } + + /** + * Creates a temporary image and executes the given actions. By creating a + * temporary copy of the image before manipulating it, this process is atomic. + */ + public function process($image, $actions, $dir, $file, $render = FALSE) + { + // We only need the filename + $image = $image['file']; + + // Unique temporary filename + $this->tmp_image = $dir.'k2img--'.sha1(time().$dir.$file).substr($file, strrpos($file, '.')); + + // Copy the image to the temporary file + copy($image, $this->tmp_image); + + // Quality change is done last + $quality = (int) arr::remove('quality', $actions); + + // Use 95 for the default quality + empty($quality) and $quality = 95; + + // All calls to these will need to be escaped, so do it now + $this->cmd_image = escapeshellarg($this->tmp_image); + $this->new_image = ($render)? $this->cmd_image : escapeshellarg($dir.$file); + + if ($status = $this->execute($actions)) + { + // Use convert to change the image into its final version. This is + // done to allow the file type to change correctly, and to handle + // the quality conversion in the most effective way possible. + if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -quality '.$quality.'% '.$this->cmd_image.' '.$this->new_image)) + { + $this->errors[] = $error; + } + else + { + // Output the image directly to the browser + if ($render !== FALSE) + { + $contents = file_get_contents($this->tmp_image); + switch (substr($file, strrpos($file, '.') + 1)) + { + case 'jpg': + case 'jpeg': + header('Content-Type: image/jpeg'); + break; + case 'gif': + header('Content-Type: image/gif'); + break; + case 'png': + header('Content-Type: image/png'); + break; + } + echo $contents; + } + } + } + + // Remove the temporary image + unlink($this->tmp_image); + $this->tmp_image = ''; + + return $status; + } + + public function crop($prop) + { + // Sanitize and normalize the properties into geometry + $this->sanitize_geometry($prop); + + // Set the IM geometry based on the properties + $geometry = escapeshellarg($prop['width'].'x'.$prop['height'].'+'.$prop['left'].'+'.$prop['top']); + + if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -crop '.$geometry.' '.$this->cmd_image.' '.$this->cmd_image)) + { + $this->errors[] = $error; + return FALSE; + } + + return TRUE; + } + + public function flip($dir) + { + // Convert the direction into a IM command + $dir = ($dir === Image::HORIZONTAL) ? '-flop' : '-flip'; + + if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' '.$dir.' '.$this->cmd_image.' '.$this->cmd_image)) + { + $this->errors[] = $error; + return FALSE; + } + + return TRUE; + } + + public function resize($prop) + { + switch ($prop['master']) + { + case Image::WIDTH: // Wx + $dim = escapeshellarg($prop['width'].'x'); + break; + case Image::HEIGHT: // xH + $dim = escapeshellarg('x'.$prop['height']); + break; + case Image::AUTO: // WxH + $dim = escapeshellarg($prop['width'].'x'.$prop['height']); + break; + case Image::NONE: // WxH! + $dim = escapeshellarg($prop['width'].'x'.$prop['height'].'!'); + break; + } + + // Use "convert" to change the width and height + if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -resize '.$dim.' '.$this->cmd_image.' '.$this->cmd_image)) + { + $this->errors[] = $error; + return FALSE; + } + + return TRUE; + } + + public function rotate($amt) + { + if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -rotate '.escapeshellarg($amt).' -background transparent '.$this->cmd_image.' '.$this->cmd_image)) + { + $this->errors[] = $error; + return FALSE; + } + + return TRUE; + } + + public function sharpen($amount) + { + // Set the sigma, radius, and amount. The amount formula allows a nice + // spread between 1 and 100 without pixelizing the image badly. + $sigma = 0.5; + $radius = $sigma * 2; + $amount = round(($amount / 80) * 3.14, 2); + + // Convert the amount to an IM command + $sharpen = escapeshellarg($radius.'x'.$sigma.'+'.$amount.'+0'); + + if ($error = exec(escapeshellcmd($this->dir.'convert'.$this->ext).' -unsharp '.$sharpen.' '.$this->cmd_image.' '.$this->cmd_image)) + { + $this->errors[] = $error; + return FALSE; + } + + return TRUE; + } + + public function composite($properties) + { + if ($error = exec(escapeshellcmd($this->dir.'composite'.$this->ext).' -geometry ' . escapeshellarg('+'.$properties['x'].'+'.$properties['y']).' -dissolve '.escapeshellarg($properties['transparency']).' '.escapeshellarg($properties['overlay_file']).' '.$this->cmd_image.' '.$this->cmd_image)) + { + $this->errors[] = $error; + return FALSE; + } + return TRUE; + } + + protected function properties() + { + return array_slice(getimagesize($this->tmp_image), 0, 2, FALSE); + } + +} // End Image ImageMagick Driver \ No newline at end of file -- cgit v1.2.3