Файл: framework/model/Image.php
Строк: 1215
<?php
/**
* Represents an Image
*
* @package framework
* @subpackage filesystem
*/
class Image extends File implements Flushable {
const ORIENTATION_SQUARE = 0;
const ORIENTATION_PORTRAIT = 1;
const ORIENTATION_LANDSCAPE = 2;
private static $backend = "GDBackend";
private static $casting = array(
'Tag' => 'HTMLText',
);
/**
* @config
* @var int The width of an image thumbnail in a strip.
*/
private static $strip_thumbnail_width = 50;
/**
* @config
* @var int The height of an image thumbnail in a strip.
*/
private static $strip_thumbnail_height = 50;
/**
* @config
* @var int The width of an image thumbnail in the CMS.
*/
private static $cms_thumbnail_width = 100;
/**
* @config
* @var int The height of an image thumbnail in the CMS.
*/
private static $cms_thumbnail_height = 100;
/**
* @config
* @var int The width of an image thumbnail in the Asset section.
*/
private static $asset_thumbnail_width = 100;
/**
* @config
* @var int The height of an image thumbnail in the Asset section.
*/
private static $asset_thumbnail_height = 100;
/**
* @config
* @var int The width of an image preview in the Asset section.
*/
private static $asset_preview_width = 400;
/**
* @config
* @var int The height of an image preview in the Asset section.
*/
private static $asset_preview_height = 200;
/**
* @config
* @var bool Force all images to resample in all cases
*/
private static $force_resample = false;
/**
* @config
* @var bool Regenerates images if set to true. This is set by {@link flush()}
*/
private static $flush = false;
/**
* Triggered early in the request when someone requests a flush.
*/
public static function flush() {
self::$flush = true;
}
public static function set_backend($backend) {
self::config()->backend = $backend;
}
public static function get_backend() {
return self::config()->backend;
}
/**
* Retrieve the original filename from the path of a transformed image.
* Any other filenames pass through unchanged.
*
* @param string $path
* @return string
*/
public static function strip_resampled_prefix($path) {
return preg_replace('/_resampled/(.+/|[^-]+-)/', '', $path);
}
/**
* 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();
}
public function getCMSFields() {
$fields = parent::getCMSFields();
$urlLink = "<div class='field readonly'>";
$urlLink .= "<label class='left'>"._t('AssetTableField.URL','URL')."</label>";
$urlLink .= "<span class='readonly'><a href='{$this->Link()}'>{$this->RelativeLink()}</a></span>";
$urlLink .= "</div>";
// todo: check why the above code is here, since $urlLink is not used?
//attach the addition file information for an image to the existing FieldGroup create in the parent class
$fileAttributes = $fields->fieldByName('Root.Main.FilePreview')->fieldByName('FilePreviewData');
$fileAttributes->push(new ReadonlyField("Dimensions", _t('AssetTableField.DIM','Dimensions') . ':'));
return $fields;
}
/**
* Return an XHTML img tag for this Image,
* or NULL if the image file doesn't exist on the filesystem.
*
* @return string
*/
public function getTag() {
if($this->exists()) {
$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
*/
public function forTemplate() {
return $this->getTag();
}
/**
* File names are filtered through {@link FileNameFilter}, see class documentation
* on how to influence this behaviour.
*
* @deprecated 4.0
*/
public function loadUploadedImage($tmpFile) {
Deprecation::notice('4.0', 'Use the Upload::loadIntoFile()');
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 = $this->class;
// Create a folder
if(!file_exists(ASSETS_PATH)) {
mkdir(ASSETS_PATH, Config::inst()->get('Filesystem', 'folder_create_mask'));
}
if(!file_exists(ASSETS_PATH . "/$class")) {
mkdir(ASSETS_PATH . "/$class", Config::inst()->get('Filesystem', 'folder_create_mask'));
}
// Generate default filename
$nameFilter = FileNameFilter::create();
$file = $nameFilter->filter($tmpFile['name']);
if(!$file) $file = "file.jpg";
$file = ASSETS_PATH . "/$class/$file";
while(file_exists(BASE_PATH . "/$file")) {
$i = $i ? ($i+1) : 2;
$oldFile = $file;
$file = preg_replace('/[0-9]*(.[^.]+$)/', $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;
}
}
/**
* Scale image proportionally to fit within the specified bounds
*
* @param integer $width The width to size within
* @param integer $height The height to size within
* @return Image|null
*/
public function Fit($width, $height) {
// Prevent divide by zero on missing/blank file
if(!$this->getWidth() || !$this->getHeight()) return null;
// Check if image is already sized to the correct dimension
$widthRatio = $width / $this->getWidth();
$heightRatio = $height / $this->getHeight();
if( $widthRatio < $heightRatio ) {
// Target is higher aspect ratio than image, so check width
if($this->isWidth($width) && !Config::inst()->get('Image', 'force_resample')) return $this;
} else {
// Target is wider or same aspect ratio as image, so check height
if($this->isHeight($height) && !Config::inst()->get('Image', 'force_resample')) return $this;
}
// Item must be regenerated
return $this->getFormattedImage('Fit', $width, $height);
}
/**
* Scale image proportionally to fit within the specified bounds
*
* @param Image_Backend $backend
* @param integer $width The width to size within
* @param integer $height The height to size within
* @return Image_Backend
*/
public function generateFit(Image_Backend $backend, $width, $height) {
return $backend->resizeRatio($width, $height);
}
/**
* Proportionally scale down this image if it is wider or taller than the specified dimensions.
* Similar to Fit but without up-sampling. Use in templates with $FitMax.
*
* @uses Image::Fit()
* @param integer $width The maximum width of the output image
* @param integer $height The maximum height of the output image
* @return Image
*/
public function FitMax($width, $height) {
// Temporary $force_resample support for 3.x, to be removed in 4.0
if (Config::inst()->get('Image', 'force_resample') && $this->getWidth() <= $width && $this->getHeight() <= $height) return $this->Fit($this->getWidth(),$this->getHeight());
return $this->getWidth() > $width || $this->getHeight() > $height
? $this->Fit($width,$height)
: $this;
}
/**
* Resize and crop image to fill specified dimensions.
* Use in templates with $Fill
*
* @param integer $width Width to crop to
* @param integer $height Height to crop to
* @return Image|null
*/
public function Fill($width, $height) {
return $this->isSize($width, $height) && !Config::inst()->get('Image', 'force_resample')
? $this
: $this->getFormattedImage('Fill', $width, $height);
}
/**
* Resize and crop image to fill specified dimensions.
* Use in templates with $Fill
*
* @param Image_Backend $backend
* @param integer $width Width to crop to
* @param integer $height Height to crop to
* @return Image_Backend
*/
public function generateFill(Image_Backend $backend, $width, $height) {
return $backend->croppedResize($width, $height);
}
/**
* Crop this image to the aspect ratio defined by the specified width and height,
* then scale down the image to those dimensions if it exceeds them.
* Similar to Fill but without up-sampling. Use in templates with $FillMax.
*
* @uses Image::Fill()
* @param integer $width The relative (used to determine aspect ratio) and maximum width of the output image
* @param integer $height The relative (used to determine aspect ratio) and maximum height of the output image
* @return Image
*/
public function FillMax($width, $height) {
// Prevent divide by zero on missing/blank file
if(!$this->getWidth() || !$this->getHeight()) return null;
// Temporary $force_resample support for 3.x, to be removed in 4.0
if (Config::inst()->get('Image', 'force_resample') && $this->isSize($width, $height)) return $this->Fill($width, $height);
// Is the image already the correct size?
if ($this->isSize($width, $height)) return $this;
// If not, make sure the image isn't upsampled
$imageRatio = $this->getWidth() / $this->getHeight();
$cropRatio = $width / $height;
// If cropping on the x axis compare heights
if ($cropRatio < $imageRatio && $this->getHeight() < $height) return $this->Fill($this->getHeight()*$cropRatio, $this->getHeight());
// Otherwise we're cropping on the y axis (or not cropping at all) so compare widths
if ($this->getWidth() < $width) return $this->Fill($this->getWidth(), $this->getWidth()/$cropRatio);
return $this->Fill($width, $height);
}
/**
* Fit image to specified dimensions and fill leftover space with a solid colour (default white). Use in templates with $Pad.
*
* @param integer $width The width to size to
* @param integer $height The height to size to
* @return Image|null
*/
public function Pad($width, $height, $backgroundColor='FFFFFF') {
return $this->isSize($width, $height) && !Config::inst()->get('Image', 'force_resample')
? $this
: $this->getFormattedImage('Pad', $width, $height, $backgroundColor);
}
/**
* Fit image to specified dimensions and fill leftover space with a solid colour (default white). Use in templates with $Pad.
*
* @param Image_Backend $backend
* @param integer $width The width to size to
* @param integer $height The height to size to
* @return Image_Backend
*/
public function generatePad(Image_Backend $backend, $width, $height, $backgroundColor='FFFFFF') {
return $backend->paddedResize($width, $height, $backgroundColor);
}
/**
* Scale image proportionally by width. Use in templates with $ScaleWidth.
*
* @param integer $width The width to set
* @return Image|null
*/
public function ScaleWidth($width) {
return $this->isWidth($width) && !Config::inst()->get('Image', 'force_resample')
? $this
: $this->getFormattedImage('ScaleWidth', $width);
}
/**
* Scale image proportionally by width. Use in templates with $ScaleWidth.
*
* @param Image_Backend $backend
* @param int $width The width to set
* @return Image_Backend
*/
public function generateScaleWidth(Image_Backend $backend, $width) {
return $backend->resizeByWidth($width);
}
/**
* Proportionally scale down this image if it is wider than the specified width.
* Similar to ScaleWidth but without up-sampling. Use in templates with $ScaleMaxWidth.
*
* @uses Image::ScaleWidth()
* @param integer $width The maximum width of the output image
* @return Image
*/
public function ScaleMaxWidth($width) {
// Temporary $force_resample support for 3.x, to be removed in 4.0
if (Config::inst()->get('Image', 'force_resample') && $this->getWidth() <= $width) return $this->ScaleWidth($this->getWidth());
return $this->getWidth() > $width
? $this->ScaleWidth($width)
: $this;
}
/**
* Scale image proportionally by height. Use in templates with $ScaleHeight.
*
* @param integer $height The height to set
* @return Image|null
*/
public function ScaleHeight($height) {
return $this->isHeight($height) && !Config::inst()->get('Image', 'force_resample')
? $this
: $this->getFormattedImage('ScaleHeight', $height);
}
/**
* Scale image proportionally by height. Use in templates with $ScaleHeight.
*
* @param Image_Backend $backend
* @param integer $height The height to set
* @return Image_Backend
*/
public function generateScaleHeight(Image_Backend $backend, $height){
return $backend->resizeByHeight($height);
}
/**
* Proportionally scale down this image if it is taller than the specified height.
* Similar to ScaleHeight but without up-sampling. Use in templates with $ScaleMaxHeight.
*
* @uses Image::ScaleHeight()
* @param integer $height The maximum height of the output image
* @return Image
*/
public function ScaleMaxHeight($height) {
// Temporary $force_resample support for 3.x, to be removed in 4.0
if (Config::inst()->get('Image', 'force_resample') && $this->getHeight() <= $height) return $this->ScaleHeight($this->getHeight());
return $this->getHeight() > $height
? $this->ScaleHeight($height)
: $this;
}
/**
* Crop image on X axis if it exceeds specified width. Retain height.
* Use in templates with $CropWidth. Example: $Image.ScaleHeight(100).$CropWidth(100)
*
* @uses Image::Fill()
* @param integer $width The maximum width of the output image
* @return Image
*/
public function CropWidth($width) {
// Temporary $force_resample support for 3.x, to be removed in 4.0
if (Config::inst()->get('Image', 'force_resample') && $this->getWidth() <= $width) return $this->Fill($this->getWidth(), $this->getHeight());
return $this->getWidth() > $width
? $this->Fill($width, $this->getHeight())
: $this;
}
/**
* Crop image on Y axis if it exceeds specified height. Retain width.
* Use in templates with $CropHeight. Example: $Image.ScaleWidth(100).CropHeight(100)
*
* @uses Image::Fill()
* @param integer $height The maximum height of the output image
* @return Image
*/
public function CropHeight($height) {
// Temporary $force_resample support for 3.x, to be removed in 4.0
if (Config::inst()->get('Image', 'force_resample') && $this->getHeight() <= $height) return $this->Fill($this->getWidth(), $this->getHeight());
return $this->getHeight() > $height
? $this->Fill($this->getWidth(), $height)
: $this;
}
/**
* Resize the image by preserving aspect ratio, keeping the image inside the
* $width and $height
*
* @param integer $width The width to size within
* @param integer $height The height to size within
* @return Image
* @deprecated 4.0 Use Fit instead
*/
public function SetRatioSize($width, $height) {
Deprecation::notice('4.0', 'Use Fit instead');
return $this->Fit($width, $height);
}
/**
* Resize the image by preserving aspect ratio, keeping the image inside the
* $width and $height
*
* @param Image_Backend $backend
* @param integer $width The width to size within
* @param integer $height The height to size within
* @return Image_Backend
* @deprecated 4.0 Use generateFit instead
*/
public function generateSetRatioSize(Image_Backend $backend, $width, $height) {
Deprecation::notice('4.0', 'Use generateFit instead');
return $backend->resizeRatio($width, $height);
}
/**
* Resize this Image by width, keeping aspect ratio. Use in templates with $SetWidth.
*
* @param integer $width The width to set
* @return Image
* @deprecated 4.0 Use ScaleWidth instead
*/
public function SetWidth($width) {
Deprecation::notice('4.0', 'Use ScaleWidth instead');
return $this->ScaleWidth($width);
}
/**
* Resize this Image by width, keeping aspect ratio. Use in templates with $SetWidth.
*
* @param Image_Backend $backend
* @param int $width The width to set
* @return Image_Backend
* @deprecated 4.0 Use generateScaleWidth instead
*/
public function generateSetWidth(Image_Backend $backend, $width) {
Deprecation::notice('4.0', 'Use generateScaleWidth instead');
return $backend->resizeByWidth($width);
}
/**
* Resize this Image by height, keeping aspect ratio. Use in templates with $SetHeight.
*
* @param integer $height The height to set
* @return Image
* @deprecated 4.0 Use ScaleHeight instead
*/
public function SetHeight($height) {
Deprecation::notice('4.0', 'Use ScaleHeight instead');
return $this->ScaleHeight($height);
}
/**
* Resize this Image by height, keeping aspect ratio. Use in templates with $SetHeight.
*
* @param Image_Backend $backend
* @param integer $height The height to set
* @return Image_Backend
* @deprecated 4.0 Use generateScaleHeight instead
*/
public function generateSetHeight(Image_Backend $backend, $height){
Deprecation::notice('4.0', 'Use generateScaleHeight instead');
return $backend->resizeByHeight($height);
}
/**
* Resize this Image by both width and height, using padded resize. Use in templates with $SetSize.
* @see Image::PaddedImage()
*
* @param integer $width The width to size to
* @param integer $height The height to size to
* @return Image
* @deprecated 4.0 Use Pad instead
*/
public function SetSize($width, $height) {
Deprecation::notice('4.0', 'Use Pad instead');
return $this->Pad($width, $height);
}
/**
* Resize this Image by both width and height, using padded resize. Use in templates with $SetSize.
*
* @param Image_Backend $backend
* @param integer $width The width to size to
* @param integer $height The height to size to
* @return Image_Backend
* @deprecated 4.0 Use generatePad instead
*/
public function generateSetSize(Image_Backend $backend, $width, $height) {
Deprecation::notice('4.0', 'Use generatePad instead');
return $backend->paddedResize($width, $height);
}
/**
* Resize this image for the CMS. Use in templates with $CMSThumbnail
*
* @return Image_Cached|null
*/
public function CMSThumbnail() {
return $this->getFormattedImage('CMSThumbnail');
}
/**
* Resize this image for the CMS. Use in templates with $CMSThumbnail.
* @return Image_Backend
*/
public function generateCMSThumbnail(Image_Backend $backend) {
return $backend->paddedResize($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 Image_Backend
*/
public function generateAssetLibraryPreview(Image_Backend $backend) {
return $backend->paddedResize($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 Image_Backend
*/
public function generateAssetLibraryThumbnail(Image_Backend $backend) {
return $backend->paddedResize($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 Image_Backend
*/
public function generateStripThumbnail(Image_Backend $backend) {
return $backend->croppedResize($this->stat('strip_thumbnail_width'),$this->stat('strip_thumbnail_height'));
}
/**
* Resize this Image by both width and height, using padded resize. Use in templates with $PaddedImage.
* @see Image::SetSize()
*
* @param integer $width The width to size to
* @param integer $height The height to size to
* @return Image
* @deprecated 4.0 Use Pad instead
*/
public function PaddedImage($width, $height, $backgroundColor='FFFFFF') {
Deprecation::notice('4.0', 'Use Pad instead');
return $this->Pad($width, $height, $backgroundColor);
}
/**
* Resize this Image by both width and height, using padded resize. Use in templates with $PaddedImage.
*
* @param Image_Backend $backend
* @param integer $width The width to size to
* @param integer $height The height to size to
* @return Image_Backend
* @deprecated 4.0 Use generatePad instead
*/
public function generatePaddedImage(Image_Backend $backend, $width, $height, $backgroundColor='FFFFFF') {
Deprecation::notice('4.0', 'Use generatePad instead');
return $backend->paddedResize($width, $height, $backgroundColor);
}
/**
* Determine if this image is of the specified size
*
* @param integer $width Width to check
* @param integer $height Height to check
* @return boolean
*/
public function isSize($width, $height) {
return $this->isWidth($width) && $this->isHeight($height);
}
/**
* Determine if this image is of the specified width
*
* @param integer $width Width to check
* @return boolean
*/
public function isWidth($width) {
return !empty($width) && $this->getWidth() == $width;
}
/**
* Determine if this image is of the specified width
*
* @param integer $height Height to check
* @return boolean
*/
public function isHeight($height) {
return !empty($height) && $this->getHeight() == $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.
*
* Just pass the correct number of parameters expected by the working function
*
* @param string $format The name of the format.
* @return Image_Cached|null
*/
public function getFormattedImage($format) {
$args = func_get_args();
if($this->exists()) {
$cacheFile = call_user_func_array(array($this, "cacheFilename"), $args);
if(!file_exists(Director::baseFolder()."/".$cacheFile) || self::$flush) {
call_user_func_array(array($this, "generateFormattedImage"), $args);
}
$cached = new Image_Cached($cacheFile, false, $this);
return $cached;
}
}
/**
* Return the filename for the cached image, given its format name and arguments.
* @param string $format The format name.
* @return string
* @throws InvalidArgumentException
*/
public function cacheFilename($format) {
$args = func_get_args();
array_shift($args);
// Note: $folder holds the *original* file, while the Image we're working with
// may be a formatted image in a child directory (this happens when we're chaining formats)
$folder = $this->ParentID ? $this->Parent()->Filename : ASSETS_DIR . "/";
$format = $format . Convert::base64url_encode($args);
$filename = $format . "/" . $this->Name;
$pattern = $this->getFilenamePatterns($this->Name);
// Any previous formats need to be derived from this Image's directory, and prepended to the new filename
$prepend = array();
preg_match_all($pattern['GeneratorPattern'], $this->Filename, $matches, PREG_SET_ORDER);
foreach($matches as $formatdir) {
$prepend[] = $formatdir[0];
}
$filename = implode($prepend) . $filename;
if (!preg_match($pattern['FullPattern'], $filename)) {
throw new InvalidArgumentException('Filename ' . $filename
. ' that should be used to cache a resized image is invalid');
}
return $folder . "_resampled/" . $filename;
}
/**
* 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 $format Name of the format to generate.
*/
public function generateFormattedImage($format) {
$args = func_get_args();
$cacheFile = call_user_func_array(array($this, "cacheFilename"), $args);
$backend = Injector::inst()->createWithArgs(self::config()->backend, array(
Director::baseFolder()."/" . $this->Filename,
$args
));
if($backend->hasImageResource()) {
$generateFunc = "generate$format";
if($this->hasMethod($generateFunc)){
array_shift($args);
array_unshift($args, $backend);
$backend = call_user_func_array(array($this, $generateFunc), $args);
if($backend){
$backend->writeTo(Director::baseFolder()."/" . $cacheFile);
}
} else {
user_error("Image::generateFormattedImage - Image $format public function not found.",E_USER_WARNING);
}
}
}
/**
* Generate a resized copy of this image with the given width & height.
* This can be used in templates with $ResizedImage but should be avoided,
* as it's the only image manipulation function which can skew an image.
*
* @param integer $width Width to resize to
* @param integer $height Height to resize to
* @return Image
*/
public function ResizedImage($width, $height) {
return $this->isSize($width, $height) && !Config::inst()->get('Image', 'force_resample')
? $this
: $this->getFormattedImage('ResizedImage', $width, $height);
}
/**
* Generate a resized copy of this image with the given width & height.
* Use in templates with $ResizedImage.
*
* @param Image_Backend $backend
* @param integer $width Width to resize to
* @param integer $height Height to resize to
* @return Image_Backend|null
*/
public function generateResizedImage(Image_Backend $backend, $width, $height) {
if(!$backend){
user_error("Image::generateFormattedImage - generateResizedImage is being called by legacy code"
. " or Image::$backend is not set.",E_USER_WARNING);
}else{
return $backend->resize($width, $height);
}
}
/**
* Generate a resized copy of this image with the given width & height, cropping to maintain aspect ratio.
* Use in templates with $CroppedImage
*
* @param integer $width Width to crop to
* @param integer $height Height to crop to
* @return Image
* @deprecated 4.0 Use Fill instead
*/
public function CroppedImage($width, $height) {
Deprecation::notice('4.0', 'Use Fill instead');
return $this->Fill($width, $height);
}
/**
* Generate a resized copy of this image with the given width & height, cropping to maintain aspect ratio.
* Use in templates with $CroppedImage
*
* @param Image_Backend $backend
* @param integer $width Width to crop to
* @param integer $height Height to crop to
* @return Image_Backend
* @deprecated 4.0 Use generateFill instead
*/
public function generateCroppedImage(Image_Backend $backend, $width, $height) {
Deprecation::notice('4.0', 'Use generateFill instead');
return $backend->croppedResize($width, $height);
}
/**
* Generate patterns that will help to match filenames of cached images
* @param string $filename Filename of source image
* @return array
*/
private function getFilenamePatterns($filename) {
$methodNames = $this->allMethodNames(true);
$generateFuncs = array();
foreach($methodNames as $methodName) {
if(substr($methodName, 0, 8) == 'generate') {
$format = substr($methodName, 8);
$generateFuncs[] = preg_quote($format);
}
}
// All generate functions may appear any number of times in the image cache name.
$generateFuncs = implode('|', $generateFuncs);
$base64url_match = "[a-zA-Z0-9_~]*={0,2}";
return array(
'FullPattern' => "/^((?P<Generator>{$generateFuncs})(?P<Args>" . $base64url_match . ")/)+"
. preg_quote($filename) . "$/i",
'GeneratorPattern' => "/(?P<Generator>{$generateFuncs})(?P<Args>" . $base64url_match . ")//i"
);
}
/**
* Generate a list of images that were generated from this image
*/
private function getGeneratedImages() {
$generatedImages = array();
$cachedFiles = array();
$folder = $this->ParentID ? $this->Parent()->Filename : ASSETS_DIR . '/';
$cacheDir = Director::getAbsFile($folder . '_resampled/');
// Find all paths with the same filename as this Image (the path contains the transformation info)
if(is_dir($cacheDir)) {
$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($cacheDir));
foreach($files as $path => $file){
if ($file->getFilename() == $this->Name) {
$cachedFiles[] = $path;
}
}
}
$pattern = $this->getFilenamePatterns($this->Name);
// Reconstruct the image transformation(s) from the format-folder(s) in the path
// (if chained, they contain the transformations in the correct order)
foreach($cachedFiles as $cf_path) {
preg_match_all($pattern['GeneratorPattern'], $cf_path, $matches, PREG_SET_ORDER);
$generatorArray = array();
foreach ($matches as $singleMatch) {
$generatorArray[] = array(
'Generator' => $singleMatch['Generator'],
'Args' => Convert::base64url_decode($singleMatch['Args'])
);
}
$generatedImages[] = array(
'FileName' => $cf_path,
'Generators' => $generatorArray
);
}
return $generatedImages;
}
/**
* Regenerate all of the formatted cached images for this image.
*
* @return int The number of formatted images regenerated
*/
public function regenerateFormattedImages() {
if(!$this->Filename) return 0;
// Without this, not a single file would be written
// caused by a check in getFormattedImage()
$this->flush();
$numGenerated = 0;
$generatedImages = $this->getGeneratedImages();
$doneList = array();
foreach($generatedImages as $singleImage) {
$cachedImage = $this;
if (in_array($singleImage['FileName'], $doneList) ) continue;
foreach($singleImage['Generators'] as $singleGenerator) {
$args = array_merge(array($singleGenerator['Generator']), $singleGenerator['Args']);
$cachedImage = call_user_func_array(array($cachedImage, "getFormattedImage"), $args);
}
$doneList[] = $singleImage['FileName'];
$numGenerated++;
}
return $numGenerated;
}
/**
* Remove all of the formatted cached images for this image.
*
* @return int The number of formatted images deleted
*/
public function deleteFormattedImages() {
if(!$this->Filename) return 0;
$numDeleted = 0;
$generatedImages = $this->getGeneratedImages();
foreach($generatedImages as $singleImage) {
$path = $singleImage['FileName'];
unlink($path);
$numDeleted++;
do {
$path = dirname($path);
}
// remove the folder if it's empty (and it's not the assets folder)
while(!preg_match('/assets$/', $path) && Filesystem::remove_folder_if_empty($path));
}
return $numDeleted;
}
/**
* Get the dimensions of this Image.
* @param string $dim If this is equal to "string", return the dimensions in string form,
* if it is 0 return the height, if it is 1 return the width.
* @return string|int|null
*/
public function getDimensions($dim = "string") {
if($this->getField('Filename')) {
$imagefile = $this->getFullPath();
if($this->exists()) {
$size = getimagesize($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
*/
public function getWidth() {
return $this->getDimensions(0);
}
/**
* Get the height of this image.
* @return int
*/
public function getHeight() {
return $this->getDimensions(1);
}
/**
* Get the orientation of this image.
* @return ORIENTATION_SQUARE | ORIENTATION_PORTRAIT | ORIENTATION_LANDSCAPE
*/
public 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;
}
}
public function onAfterUpload() {
$this->deleteFormattedImages();
parent::onAfterUpload();
}
protected function onBeforeDelete() {
$backend = Injector::inst()->create(self::get_backend());
$backend->onBeforeDelete($this);
$this->deleteFormattedImages();
parent::onBeforeDelete();
}
}
/**
* 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 framework
* @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, Image $sourceImage = null) {
parent::__construct(array(), $isSingleton);
if ($sourceImage) {
// Copy properties from source image, except unsafe ones
$properties = $sourceImage->toMap();
unset($properties['RecordClassName'], $properties['ClassName']);
$this->update($properties);
}
$this->ID = -1;
$this->Filename = $filename;
}
/**
* Override the parent's exists method becuase the ID is explicitly set to -1 on a cached image we can't use the
* default check
*
* @return bool Whether the cached image exists
*/
public function exists() {
return file_exists($this->getFullPath());
}
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.");
}
}