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<?php
/**
* Represents an Image
*
* @package sapphire
* @subpackage filesystem
*/
class Image extends File {
const ORIENTATION_SQUARE = 0;
const ORIENTATION_PORTRAIT = 1;
const ORIENTATION_LANDSCAPE = 2;
static $casting = array(
'Tag' => 'HTMLText',
);
/**
* The width of an image thumbnail in a strip.
* @var int
*/
public static $strip_thumbnail_width = 50;
/**
* The height of an image thumbnail in a strip.
* @var int
*/
public static $strip_thumbnail_height = 50;
/**
* The width of an image thumbnail in the CMS.
* @var int
*/
public static $cms_thumbnail_width = 100;
/**
* The height of an image thumbnail in the CMS.
*/
public static $cms_thumbnail_height = 100;
/**
* The width of an image thumbnail in the Asset section.
*/
public static $asset_thumbnail_width = 100;
/**
* The height of an image thumbnail in the Asset section.
*/
public static $asset_thumbnail_height = 100;
/**
* The width of an image preview in the Asset section.
*/
public static $asset_preview_width = 400;
/**
* The height of an image preview in the Asset section.
*/
public static $asset_preview_height = 200;
/**
* Set up template methods to access the transformations generated by 'generate' methods.
*/
public function defineMethods() {
$methodNames = $this->allMethodNames();
foreach($methodNames as $methodName) {
if(substr($methodName,0,8) == 'generate') {
$this->addWrapperMethod(substr($methodName,8), 'getFormattedImage');
}
}
parent::defineMethods();
}
/**
* An image exists if it has a filename.
* Does not do any filesystem checks.
*
* @return boolean
*/
public function exists() {
if(isset($this->record["Filename"])) {
return true;
}
}
/**
* Return an XHTML img tag for this Image,
* or NULL if the image file doesn't exist on the filesystem.
*
* @return string
*/
function getTag() {
if(file_exists(Director::baseFolder() . '/' . $this->Filename)) {
$url = $this->getURL();
$title = ($this->Title) ? $this->Title : $this->Filename;
if($this->Title) {
$title = Convert::raw2att($this->Title);
} else {
if(preg_match("/([^\/]*)\.[a-zA-Z0-9]{1,6}$/", $title, $matches)) $title = Convert::raw2att($matches[1]);
}
return "<img src=\"$url\" alt=\"$title\" />";
}
}
/**
* Return an XHTML img tag for this Image.
*
* @return string
*/
function forTemplate() {
return $this->getTag();
}
function loadUploadedImage($tmpFile) {
if(!is_array($tmpFile)) {
user_error("Image::loadUploadedImage() Not passed an array. Most likely, the form hasn't got the right enctype", E_USER_ERROR);
}
if(!$tmpFile['size']) {
return;
}
$class = $this->class;
// Create a folder
if(!file_exists(ASSETS_PATH)) {
mkdir(ASSETS_PATH, Filesystem::$folder_create_mask);
}
if(!file_exists(ASSETS_PATH . "/$class")) {
mkdir(ASSETS_PATH . "/$class", Filesystem::$folder_create_mask);
}
// Generate default filename
$file = str_replace(' ', '-',$tmpFile['name']);
$file = ereg_replace('[^A-Za-z0-9+.-]+','',$file);
$file = ereg_replace('-+', '-',$file);
if(!$file) {
$file = "file.jpg";
}
$file = ASSETS_PATH . "/$class/$file";
while(file_exists(BASE_PATH . "/$file")) {
$i = $i ? ($i+1) : 2;
$oldFile = $file;
$file = ereg_replace('[0-9]*(\.[^.]+$)',$i . '\\1', $file);
if($oldFile == $file && $i > 2) user_error("Couldn't fix $file with $i", E_USER_ERROR);
}
if(file_exists($tmpFile['tmp_name']) && copy($tmpFile['tmp_name'], BASE_PATH . "/$file")) {
// Remove the old images
$this->deleteFormattedImages();
return true;
}
}
public function SetWidth($width) {
return $this->getWidth() == $width ? $this : $this->getFormattedImage('SetWidth', $width);
}
public function SetHeight($height) {
return $this->getHeight() == $height ? $this : $this->getFormattedImage('SetHeight', $height);
}
public function SetSize($width, $height) {
return (($this->getWidth() == $width) && ($this->getHeight() == $height)) ? $this : $this->getFormattedImage('SetSize', $width, $height);
}
public function SetRatioSize($width, $height) {
return $this->getFormattedImage('SetRatioSize', $width, $height);
}
public function generateSetRatioSize(GD $gd, $width, $height) {
return $gd->resizeRatio($width, $height);
}
/**
* Resize this Image by width, keeping aspect ratio. Use in templates with $SetWidth.
* @return GD
*/
public function generateSetWidth(GD $gd, $width) {
return $gd->resizeByWidth($width);
}
/**
* Resize this Image by height, keeping aspect ratio. Use in templates with $SetHeight.
* @return GD
*/
public function generateSetHeight(GD $gd, $height){
return $gd->resizeByHeight($height);
}
/**
* Resize this Image by both width and height, using padded resize. Use in templates with $SetSize.
* @return GD
*/
public function generateSetSize(GD $gd, $width, $height) {
return $gd->paddedResize($width, $height);
}
public function CMSThumbnail() {
return $this->getFormattedImage('CMSThumbnail');
}
/**
* Resize this image for the CMS. Use in templates with $CMSThumbnail.
* @return GD
*/
function generateCMSThumbnail(GD $gd) {
return $gd->paddedResize($this->stat('cms_thumbnail_width'),$this->stat('cms_thumbnail_height'));
}
/**
* Resize this image for preview in the Asset section. Use in templates with $AssetLibraryPreview.
* @return GD
*/
function generateAssetLibraryPreview(GD $gd) {
return $gd->paddedResize($this->stat('asset_preview_width'),$this->stat('asset_preview_height'));
}
/**
* Resize this image for thumbnail in the Asset section. Use in templates with $AssetLibraryThumbnail.
* @return GD
*/
function generateAssetLibraryThumbnail(GD $gd) {
return $gd->paddedResize($this->stat('asset_thumbnail_width'),$this->stat('asset_thumbnail_height'));
}
/**
* Resize this image for use as a thumbnail in a strip. Use in templates with $StripThumbnail.
* @return GD
*/
function generateStripThumbnail(GD $gd) {
return $gd->croppedResize($this->stat('strip_thumbnail_width'),$this->stat('strip_thumbnail_height'));
}
function generatePaddedImage(GD $gd, $width, $height) {
return $gd->paddedResize($width, $height);
}
/**
* Return an image object representing the image in the given format.
* This image will be generated using generateFormattedImage().
* The generated image is cached, to flush the cache append ?flush=1 to your URL.
* @param string $format The name of the format.
* @param string $arg1 An argument to pass to the generate function.
* @param string $arg2 A second argument to pass to the generate function.
* @return Image_Cached
*/
function getFormattedImage($format, $arg1 = null, $arg2 = null) {
if($this->ID && $this->Filename && Director::fileExists($this->Filename)) {
$cacheFile = $this->cacheFilename($format, $arg1, $arg2);
if(!file_exists(Director::baseFolder()."/".$cacheFile) || isset($_GET['flush'])) {
$this->generateFormattedImage($format, $arg1, $arg2);
}
$cached = new Image_Cached($cacheFile);
// Pass through the title so the templates can use it
$cached->Title = $this->Title;
return $cached;
}
}
/**
* Return the filename for the cached image, given it's format name and arguments.
* @param string $format The format name.
* @param string $arg1 The first argument passed to the generate function.
* @param string $arg2 The second argument passed to the generate function.
* @return string
*/
function cacheFilename($format, $arg1 = null, $arg2 = null) {
$folder = $this->ParentID ? $this->Parent()->Filename : ASSETS_DIR . "/";
$format = $format.$arg1.$arg2;
return $folder . "_resampled/$format-" . $this->Name;
}
/**
* Generate an image on the specified format. It will save the image
* at the location specified by cacheFilename(). The image will be generated
* using the specific 'generate' method for the specified format.
* @param string $format Name of the format to generate.
* @param string $arg1 Argument to pass to the generate method.
* @param string $arg2 A second argument to pass to the generate method.
*/
function generateFormattedImage($format, $arg1 = null, $arg2 = null) {
$cacheFile = $this->cacheFilename($format, $arg1, $arg2);
$gd = new GD(Director::baseFolder()."/" . $this->Filename);
if($gd->hasGD()){
$generateFunc = "generate$format";
if($this->hasMethod($generateFunc)){
$gd = $this->$generateFunc($gd, $arg1, $arg2);
if($gd){
$gd->writeTo(Director::baseFolder()."/" . $cacheFile);
}
} else {
user_error("Image::generateFormattedImage - Image $format function not found.",E_USER_WARNING);
}
}
}
/**
* Generate a resized copy of this image with the given width & height.
* Use in templates with $ResizedImage.
*/
function generateResizedImage($gd, $width, $height) {
if(is_numeric($gd) || !$gd){
user_error("Image::generateFormattedImage - generateResizedImage is being called by legacy code or gd is not set.",E_USER_WARNING);
}else{
return $gd->resize($width, $height);
}
}
/**
* Generate a resized copy of this image with the given width & height, cropping to maintain aspect ratio.
* Use in templates with $CroppedImage
*/
function generateCroppedImage($gd, $width, $height) {
return $gd->croppedResize($width, $height);
}
/**
* Remove all of the formatted cached images for this image.
*
* @return int The number of formatted images deleted
*/
public function deleteFormattedImages() {
if(!$this->Filename) return 0;
$numDeleted = 0;
$methodNames = $this->allMethodNames();
$cachedFiles = array();
$folder = $this->ParentID ? $this->Parent()->Filename : ASSETS_DIR . '/';
$cacheDir = Director::getAbsFile($folder . '_resampled/');
if(is_dir($cacheDir)) {
if($handle = opendir($cacheDir)) {
while(($file = readdir($handle)) !== false) {
// ignore all entries starting with a dot
if(substr($file, 0, 1) != '.' && is_file($cacheDir . $file)) {
$cachedFiles[] = $file;
}
}
closedir($handle);
}
}
$generateFuncs = array();
foreach($methodNames as $methodName) {
if(substr($methodName, 0, 8) == 'generate') {
$format = substr($methodName, 8);
$generateFuncs[] = $format;
}
}
// All generate functions may appear any number of times in the image cache name.
$generateFuncs = implode('|', $generateFuncs);
$pattern = "/^(({$generateFuncs})\d+\-)+{$this->Name}$/i";
foreach($cachedFiles as $cfile) {
if(preg_match($pattern, $cfile)) {
if(Director::fileExists($cacheDir . $cfile)) {
unlink($cacheDir . $cfile);
$numDeleted++;
}
}
}
return $numDeleted;
}
/**
* Get the dimensions of this Image.
* @param string $dim If this is equal to "string", return the dimensions in string form,
* if it is 0 return the height, if it is 1 return the width.
* @return string|int
*/
function getDimensions($dim = "string") {
if($this->getField('Filename')) {
$imagefile = Director::baseFolder() . '/' . $this->getField('Filename');
if(file_exists($imagefile)) {
$size = getimagesize($imagefile);
return ($dim === "string") ? "$size[0]x$size[1]" : $size[$dim];
} else {
return ($dim === "string") ? "file '$imagefile' not found" : null;
}
}
}
/**
* Get the width of this image.
* @return int
*/
function getWidth() {
return $this->getDimensions(0);
}
/**
* Get the height of this image.
* @return int
*/
function getHeight() {
return $this->getDimensions(1);
}
/**
* Get the orientation of this image.
* @return ORIENTATION_SQUARE | ORIENTATION_PORTRAIT | ORIENTATION_LANDSCAPE
*/
function getOrientation() {
$width = $this->getWidth();
$height = $this->getHeight();
if($width > $height) {
return self::ORIENTATION_LANDSCAPE;
} elseif($height > $width) {
return self::ORIENTATION_PORTRAIT;
} else {
return self::ORIENTATION_SQUARE;
}
}
protected function onBeforeDelete() {
parent::onBeforeDelete();
$this->deleteFormattedImages();
}
}
/**
* A resized / processed {@link Image} object.
* When Image object are processed or resized, a suitable Image_Cached object is returned, pointing to the
* cached copy of the processed image.
*
* @package sapphire
* @subpackage filesystem
*/
class Image_Cached extends Image {
/**
* Create a new cached image.
* @param string $filename The filename of the image.
* @param boolean $isSingleton This this to true if this is a singleton() object, a stub for calling methods. Singletons
* don't have their defaults set.
*/
public function __construct($filename = null, $isSingleton = false) {
parent::__construct(array(), $isSingleton);
$this->ID = -1;
$this->Filename = $filename;
}
public function getRelativePath() {
return $this->getField('Filename');
}
/**
* Prevent creating new tables for the cached record
*
* @return false
*/
public function requireTable() {
return false;
}
/**
* Prevent writing the cached image to the database
*
* @throws Exception
*/
public function write($showDebug = false, $forceInsert = false, $forceWrite = false, $writeComponents = false) {
throw new Exception("{$this->ClassName} can not be written back to the database.");
}
}
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