class_PngImage.php

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<?php
class PngImage extends BaseImage {
        protected function __construct () {
                // Call parent constructor
                parent::__construct(__CLASS__);
        }

        public final static function createPngImage(CompileableTemplate $templateInstance) {
                // Get a new instance
                $imageInstance = new PngImage();

                // Set template instance
                $imageInstance->setTemplateInstance($templateInstance);

                // Set image type
                $imageInstance->setImageType('png');

                // Return the instance
                return $imageInstance;
        }

        public function finishImage () {
                // Call parent method
                parent::finishImage();

                // Get a file name for our image
                $cacheFile = $this->getTemplateInstance()->getImageCacheFqfn();

                // Does it exist?
                if (file_exists($cacheFile)) {
                        // Remove it
                        @unlink($cacheFile);
                } // END - if

                // Finish the image and send it to a cache file
                imagepng($this->getImageResource(), $cacheFile, 9, PNG_ALL_FILTERS);
        }
}

// [EOF]
?>