mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-07-12 14:33:56 +02:00
b3409a2ea3
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@105533 467b73ca-7a2a-4603-9d3b-597d59a354a9
467 lines
13 KiB
PHP
Executable File
467 lines
13 KiB
PHP
Executable File
<?php
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/**
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* Represents an image attached to a page.
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* @package sapphire
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* @subpackage filesystem
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*/
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class Image extends File {
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const ORIENTATION_SQUARE = 0;
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const ORIENTATION_PORTRAIT = 1;
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const ORIENTATION_LANDSCAPE = 2;
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static $casting = array(
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'Tag' => 'HTMLText',
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);
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/**
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* The width of an image thumbnail in a strip.
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* @var int
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*/
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public static $strip_thumbnail_width = 50;
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/**
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* The height of an image thumbnail in a strip.
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* @var int
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*/
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public static $strip_thumbnail_height = 50;
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/**
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* The width of an image thumbnail in the CMS.
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* @var int
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*/
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public static $cms_thumbnail_width = 100;
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/**
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* The height of an image thumbnail in the CMS.
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*/
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public static $cms_thumbnail_height = 100;
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/**
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* The width of an image thumbnail in the Asset section.
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*/
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public static $asset_thumbnail_width = 100;
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/**
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* The height of an image thumbnail in the Asset section.
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*/
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public static $asset_thumbnail_height = 100;
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/**
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* The width of an image preview in the Asset section.
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*/
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public static $asset_preview_width = 400;
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/**
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* The height of an image preview in the Asset section.
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*/
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public static $asset_preview_height = 200;
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/**
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* Set up template methods to access the transformations generated by 'generate' methods.
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*/
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public function defineMethods() {
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$methodNames = $this->allMethodNames();
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foreach($methodNames as $methodName) {
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if(substr($methodName,0,8) == 'generate') {
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$this->addWrapperMethod(substr($methodName,8), 'getFormattedImage');
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}
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}
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parent::defineMethods();
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}
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/**
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* An image exists if it has a filename.
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* @return boolean
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*/
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public function exists() {
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if(isset($this->record["Filename"])) {
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return true;
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}
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}
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/**
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* Return an XHTML img tag for this Image.
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* @return string
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*/
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function getTag() {
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if(file_exists(Director::baseFolder()."/".$this->Filename)) {
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$url = $this->getURL();
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$title = ($this->Title) ? $this->Title : $this->Filename;
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if ($this->Title) {
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$title = $this->Title;
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}
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else {
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// use the file name (without path and extension) for alt atttribute when the title is not defined
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$title = $this->Filename;
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if (preg_match("/([^\/]*)\.[a-zA-Z0-9]{1,6}$/", $title, $matches)) $title = $matches[1];
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}
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return "<img src=\"$url\" alt=\"$title\" />";
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}
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}
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/**
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* Return an XHTML img tag for this Image.
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* @return string
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*/
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function forTemplate() {
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return $this->getTag();
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}
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/**
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* Load a recently uploaded image into this image field.
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* @param array $tmpFile The array entry from $_FILES
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* @return boolean Returns true if successful
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*/
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function loadUploaded($tmpFile) {
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if(parent::loadUploaded($tmpFile) === true) {
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$this->deleteFormattedImages();
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return true;
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}
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}
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function loadUploadedImage($tmpFile) {
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if(!is_array($tmpFile)) {
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user_error("Image::loadUploadedImage() Not passed an array. Most likely, the form hasn't got the right enctype", E_USER_ERROR);
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}
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if(!$tmpFile['size']) {
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return;
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}
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$class = $this->class;
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// Create a folder
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if(!file_exists(ASSETS_PATH)) {
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mkdir(ASSETS_PATH, Filesystem::$folder_create_mask);
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}
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if(!file_exists(ASSETS_PATH . "/$class")) {
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mkdir(ASSETS_PATH . "/$class", Filesystem::$folder_create_mask);
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}
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// Generate default filename
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$file = str_replace(' ', '-',$tmpFile['name']);
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$file = ereg_replace('[^A-Za-z0-9+.-]+','',$file);
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$file = ereg_replace('-+', '-',$file);
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if(!$file) {
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$file = "file.jpg";
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}
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$file = ASSETS_PATH . "/$class/$file";
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while(file_exists(BASE_PATH . "/$file")) {
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$i = $i ? ($i+1) : 2;
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$oldFile = $file;
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$file = ereg_replace('[0-9]*(\.[^.]+$)',$i . '\\1', $file);
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if($oldFile == $file && $i > 2) user_error("Couldn't fix $file with $i", E_USER_ERROR);
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}
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if(file_exists($tmpFile['tmp_name']) && copy($tmpFile['tmp_name'], BASE_PATH . "/$file")) {
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// Remove the old images
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$this->deleteFormattedImages();
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return true;
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}
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}
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public function SetWidth($width) {
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return $this->getFormattedImage('SetWidth', $width);
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}
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public function SetHeight($height) {
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return $this->getFormattedImage('SetHeight', $height);
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}
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public function SetSize($width, $height) {
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return $this->getFormattedImage('SetSize', $width, $height);
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}
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public function SetRatioSize($width, $height) {
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return $this->getFormattedImage('SetRatioSize', $width, $height);
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}
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public function generateSetRatioSize(GD $gd, $width, $height) {
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return $gd->resizeRatio($width, $height);
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}
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/**
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* Resize this Image by width, keeping aspect ratio. Use in templates with $SetWidth.
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* @return GD
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*/
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public function generateSetWidth(GD $gd, $width) {
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return $gd->resizeByWidth($width);
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}
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/**
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* Resize this Image by height, keeping aspect ratio. Use in templates with $SetHeight.
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* @return GD
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*/
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public function generateSetHeight(GD $gd, $height){
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return $gd->resizeByHeight($height);
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}
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/**
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* Resize this Image by both width and height, using padded resize. Use in templates with $SetSize.
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* @return GD
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*/
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public function generateSetSize(GD $gd, $width, $height) {
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return $gd->paddedResize($width, $height);
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}
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public function CMSThumbnail() {
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return $this->getFormattedImage('CMSThumbnail');
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}
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/**
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* Resize this image for the CMS. Use in templates with $CMSThumbnail.
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* @return GD
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*/
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function generateCMSThumbnail(GD $gd) {
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return $gd->paddedResize($this->stat('cms_thumbnail_width'),$this->stat('cms_thumbnail_height'));
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}
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/**
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* Resize this image for preview in the Asset section. Use in templates with $AssetLibraryPreview.
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* @return GD
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*/
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function generateAssetLibraryPreview(GD $gd) {
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return $gd->paddedResize($this->stat('asset_preview_width'),$this->stat('asset_preview_height'));
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}
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/**
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* Resize this image for thumbnail in the Asset section. Use in templates with $AssetLibraryThumbnail.
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* @return GD
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*/
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function generateAssetLibraryThumbnail(GD $gd) {
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return $gd->paddedResize($this->stat('asset_thumbnail_width'),$this->stat('asset_thumbnail_height'));
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}
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/**
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* Resize this image for use as a thumbnail in a strip. Use in templates with $StripThumbnail.
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* @return GD
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*/
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function generateStripThumbnail(GD $gd) {
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return $gd->croppedResize($this->stat('strip_thumbnail_width'),$this->stat('strip_thumbnail_height'));
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}
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function generatePaddedImage(GD $gd, $width, $height) {
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return $gd->paddedResize($width, $height);
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}
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/**
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* Return an image object representing the image in the given format.
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* This image will be generated using generateFormattedImage().
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* The generated image is cached, to flush the cache append ?flush=1 to your URL.
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* @param string $format The name of the format.
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* @param string $arg1 An argument to pass to the generate function.
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* @param string $arg2 A second argument to pass to the generate function.
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* @return Image_Cached
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*/
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function getFormattedImage($format, $arg1 = null, $arg2 = null) {
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if($this->ID && $this->Filename && Director::fileExists($this->Filename)) {
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$cacheFile = $this->cacheFilename($format, $arg1, $arg2);
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if(!file_exists(Director::baseFolder()."/".$cacheFile) || isset($_GET['flush'])) {
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$this->generateFormattedImage($format, $arg1, $arg2);
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}
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return new Image_Cached($cacheFile);
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}
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}
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/**
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* Return the filename for the cached image, given it's format name and arguments.
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* @param string $format The format name.
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* @param string $arg1 The first argument passed to the generate function.
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* @param string $arg2 The second argument passed to the generate function.
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* @return string
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*/
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function cacheFilename($format, $arg1 = null, $arg2 = null) {
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$folder = $this->ParentID ? $this->Parent()->Filename : ASSETS_DIR . "/";
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$format = $format.$arg1.$arg2;
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return $folder . "_resampled/$format-" . $this->Name;
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}
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/**
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* Generate an image on the specified format. It will save the image
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* at the location specified by cacheFilename(). The image will be generated
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* using the specific 'generate' method for the specified format.
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* @param string $format Name of the format to generate.
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* @param string $arg1 Argument to pass to the generate method.
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* @param string $arg2 A second argument to pass to the generate method.
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*/
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function generateFormattedImage($format, $arg1 = null, $arg2 = null) {
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$cacheFile = $this->cacheFilename($format, $arg1, $arg2);
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$gd = new GD(Director::baseFolder()."/" . $this->Filename);
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if($gd->hasGD()){
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$generateFunc = "generate$format";
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if($this->hasMethod($generateFunc)){
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$gd = $this->$generateFunc($gd, $arg1, $arg2);
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if($gd){
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$gd->writeTo(Director::baseFolder()."/" . $cacheFile);
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}
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} else {
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USER_ERROR("Image::generateFormattedImage - Image $format function not found.",E_USER_WARNING);
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}
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}
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}
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/**
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* Generate a resized copy of this image with the given width & height.
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* Use in templates with $ResizedImage.
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*/
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function generateResizedImage($gd, $width, $height) {
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if(is_numeric($gd) || !$gd){
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USER_ERROR("Image::generateFormattedImage - generateResizedImage is being called by legacy code or gd is not set.",E_USER_WARNING);
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}else{
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return $gd->resize($width, $height);
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}
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}
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/**
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* Generate a resized copy of this image with the given width & height, cropping to maintain aspect ratio.
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* Use in templates with $CroppedImage
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*/
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function generateCroppedImage($gd, $width, $height) {
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return $gd->croppedResize($width, $height);
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}
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/**
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* Remove all of the formatted cached images for this image.
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* @return int The number of formatted images deleted
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*/
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public function deleteFormattedImages() {
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if(!$this->Filename) return 0;
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$numDeleted = 0;
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$methodNames = $this->allMethodNames();
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$cachedFiles = array();
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$folder = $this->ParentID ? $this->Parent()->Filename : 'assets/';
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$cacheDir = Director::getAbsFile($folder . '_resampled/');
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if(is_dir($cacheDir)) {
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if($handle = opendir($cacheDir)) {
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while(($file = readdir($handle)) !== false) {
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// ignore all entries starting with a dot
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if(substr($file, 0, 1) != '.' && is_file($cacheDir . $file)) {
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$cachedFiles[] = $file;
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}
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}
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closedir($handle);
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}
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}
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foreach($methodNames as $methodName) {
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if(substr($methodName, 0, 8) == 'generate') {
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$format = substr($methodName, 8);
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$pattern = '/^' . $format . '[^\-]*\-' . $this->Name . '$/i';
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foreach($cachedFiles as $cfile) {
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if(preg_match($pattern, $cfile)) {
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if(Director::fileExists($cacheDir . $cfile)) {
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unlink($cacheDir . $cfile);
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$numDeleted++;
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}
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}
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}
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}
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}
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return $numDeleted;
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}
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/**
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* Get the dimensions of this Image.
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* @param string $dim If this is equal to "string", return the dimensions in string form,
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* if it is 0 return the height, if it is 1 return the width.
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* @return string|int
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*/
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function getDimensions($dim = "string") {
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if($this->getField('Filename')) {
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$imagefile = Director::baseFolder() . '/' . $this->getField('Filename');
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if(file_exists($imagefile)) {
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$size = getimagesize($imagefile);
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return ($dim === "string") ? "$size[0]x$size[1]" : $size[$dim];
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} else {
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return ($dim === "string") ? "file '$imagefile' not found" : null;
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}
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}
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}
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/**
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* Get the width of this image.
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* @return int
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*/
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function getWidth() {
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return $this->getDimensions(0);
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}
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/**
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* Get the height of this image.
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* @return int
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*/
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function getHeight() {
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return $this->getDimensions(1);
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}
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/**
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* Get the orientation of this image.
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* @return ORIENTATION_SQUARE | ORIENTATION_PORTRAIT | ORIENTATION_LANDSCAPE
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*/
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function getOrientation() {
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$width = $this->getWidth();
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$height = $this->getHeight();
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if($width > $height) {
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return self::ORIENTATION_LANDSCAPE;
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} elseif($height > $width) {
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return self::ORIENTATION_PORTRAIT;
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} else {
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return self::ORIENTATION_SQUARE;
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}
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}
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}
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/**
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* A resized / processed {@link Image} object.
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* When Image object are processed or resized, a suitable Image_Cached object is returned, pointing to the
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* cached copy of the processed image.
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* @package sapphire
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* @subpackage filesystem
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*/
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class Image_Cached extends Image {
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/**
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* Create a new cached image.
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* @param string $filename The filename of the image.
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* @param boolean $isSingleton This this to true if this is a singleton() object, a stub for calling methods. Singletons
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* don't have their defaults set.
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*/
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public function __construct($filename = null, $isSingleton = false) {
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parent::__construct(array(), $isSingleton);
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$this->Filename = $filename;
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}
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public function getRelativePath() {
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return $this->getField('Filename');
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}
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// Prevent this from doing anything
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public function requireTable() {
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}
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public function debug() {
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return "Image_Cached object for $this->Filename";
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}
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}
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