mirror/php-cimage
1
0
Fork 0
mirror of https://github.com/mosbth/cimage.git synced 2025-08-13 03:24:16 +02:00
Code Issues Releases Wiki Activity

preparing to tag latest changes

Browse Source
This commit is contained in:
Mikael Roos
2012-10-02 22:49:43 +02:00
parent e4ff269a60
commit 12109803cc
4 changed files with 202 additions and 84 deletions
Download Patch File Download Diff File Expand all files Collapse all files

189
CImage.php
View File

@@ -12,7 +12,9 @@ class CImage {
* Properties
*/
private $image = null; // Object for open image
public $pathToImage;
public $imageFolder; // root folder of images
public $imageName; // image filename, may include subdirectory, relative from $imageFolder
public $pathToImage; // $imageFolder . '/' . $imageName;
private $fileExtension;
public $newWidth;
public $newHeight;
@@ -39,12 +41,15 @@ class CImage {
/**
* Constructor, can take arguments to init the object.
*
* @param $pathToImage string the filepath to the image.
* @param $saveFolder string path to folder where to save the new file or null to skip saving.
* @param $newName string new filename or leave to null to autogenerate filename.
* @param string $imageName filename which may contain subdirectory.
* @param string $imageFolder path to root folder for images.
* @param string $saveFolder path to folder where to save the new file or null to skip saving.
* @param string $newName new filename or leave to null to autogenerate filename.
*/
public function __construct($pathToImage=null, $saveFolder=null, $newName=null) {
$this->pathToImage = $pathToImage;
public function __construct($imageName=null, $imageFolder=null, $saveFolder=null, $newName=null) {
$this->imageName = ltrim($imageName, '/');
$this->imageFolder = rtrim($imageFolder, '/');
$this->pathToImage = $this->imageFolder . '/' . $this->imageName;
$this->fileExtension = pathinfo($this->pathToImage, PATHINFO_EXTENSION);
$this->saveFolder = $saveFolder;
$this->newName = $newName;
@@ -66,20 +71,24 @@ class CImage {
*/
public function CreateFilename() {
$parts = pathinfo($this->pathToImage);
$crop = $this->cropToFit ? '_cf' : null;
$cropToFit = $this->cropToFit ? '_cf' : null;
$crop_x = $this->crop_x ? "_x{$this->crop_x}" : null;
$crop_y = $this->crop_y ? "_y{$this->crop_y}" : null;
$quality = $this->quality == 100 ? null : "_q{$this->quality}";
$crop = $this->crop ? '_c' . $this->crop['width'] . '-' . $this->crop['height'] . '-' . $this->crop['start_x'] . '-' . $this->crop['start_y'] : null;
$filters = null;
foreach($this->filters as $filter) {
if(is_array($filter)) {
$filters .= "_f{$filter['id']}";
for($i=1;$i<=$filter['argc'];$i++) {
$filters .= ":".$filter["arg{$i}"];
if(isset($this->filters)) {
foreach($this->filters as $filter) {
if(is_array($filter)) {
$filters .= "_f{$filter['id']}";
for($i=1;$i<=$filter['argc'];$i++) {
$filters .= ":".$filter["arg{$i}"];
}
}
}
}
return $this->saveFolder . '/' . $parts['filename'] . '_' . round($this->newWidth) . '_' . round($this->newHeight) . $crop . $crop_x . $crop_y . $quality . $filters . '.' . $parts['extension'];
$subdir = str_replace('/', '-', dirname($this->imageName));
return $this->saveFolder . '/' . $subdir . '_' . $parts['filename'] . '_' . round($this->newWidth) . '_' . round($this->newHeight) . $crop . $cropToFit . $crop_x . $crop_y . $quality . $filters . '.' . $parts['extension'];
}
@@ -111,7 +120,7 @@ class CImage {
*/
protected function Output($file) {
$time = filemtime($file);
if(isset($_SERVER['If-Modified-Since']) && strtotime($_SERVER['If-Modified-Since']) >= $time){
if(isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $time){
header("HTTP/1.0 304 Not Modified");
} else {
header('Content-type: ' . $this->mime);
@@ -120,7 +129,7 @@ class CImage {
}
exit;
}
/**
* Open image.
@@ -170,49 +179,65 @@ class CImage {
* Calculate new width and height of image.
*/
protected function CalculateNewWidthAndHeight() {
// Only calculate new width and height if keeping aspect-ratio.
// Crop, use cropped width and height as base for calulations
$width = $this->width;
$height = $this->height;
if($this->crop) {
if(empty($this->crop['width'])) {
$this->crop['width'] = $this->width - $this->crop['start_x'];
}
if(empty($this->crop['height'])) {
$this->crop['height'] = $this->height - $this->crop['start_y'];
}
$width = $this->crop['width'];
$height = $this->crop['height'];
}
// Calculate new width and height if keeping aspect-ratio.
if($this->keepRatio) {
// Both new width and height are set.
if(isset($this->newWidth) && isset($this->newHeight)) {
// Use newWidth and newHeigh as min width/height, image should fit the area.
if($this->cropToFit) {
$ratioWidth = $this->width/$this->newWidth;
$ratioHeight = $this->height/$this->newHeight;
$ratio = ($ratioWidth < $ratioHeight) ? $ratioWidth : $ratioHeight;
$this->cropWidth = $this->width / $ratio;
$this->cropHeight = $this->height / $ratio;
}
// Use newWidth and newHeigh as max width/height, image should not be larger.
else {
$ratioWidth = $this->width/$this->newWidth;
$ratioHeight = $this->height/$this->newHeight;
$ratio = ($ratioWidth > $ratioHeight) ? $ratioWidth : $ratioHeight;
$this->newWidth = $this->width / $ratio;
$this->newHeight = $this->height / $ratio;
}
$ratioWidth = $width / $this->newWidth;
$ratioHeight = $height / $this->newHeight;
$ratio = ($ratioWidth > $ratioHeight) ? $ratioWidth : $ratioHeight;
$this->newWidth = $width / $ratio;
$this->newHeight = $height / $ratio;
}
// Use new width as max-width
elseif(isset($this->newWidth)) {
$factor = (float)$this->newWidth / (float)$this->width;
$this->newHeight = $factor * $this->height;
$factor = (float)$this->newWidth / (float)$width;
$this->newHeight = $factor * $height;
}
// Use new height as max-hight
elseif(isset($this->newHeight)) {
$factor = (float)$this->newHeight / (float)$this->height;
$this->newWidth = $factor * $this->width;
}
$factor = (float)$this->newHeight / (float)$height;
$this->newWidth = $factor * $width;
}
// Use newWidth and newHeigh as min width/height, image should fit the area.
if($this->cropToFit) {
$ratioWidth = $width / $this->newWidth;
$ratioHeight = $height / $this->newHeight;
$ratio = ($ratioWidth < $ratioHeight) ? $ratioWidth : $ratioHeight;
$this->cropWidth = $width / $ratio;
$this->cropHeight = $height / $ratio;
}
}
// Do not keep aspect ratio, but both newWidth and newHeight must be set
else {
$this->newWidth = isset($this->newWidth) ? $this->newWidth : $this->width;
$this->newHeight = isset($this->newHeight) ? $this->newHeight : $this->height;
}
// Crop, ensure to set new width and height
if($this->crop) {
$this->newWidth = isset($this->newWidth) ? $this->newWidth : $this->crop['width'];
$this->newHeight = isset($this->newHeight) ? $this->newHeight : $this->crop['height'];
}
// No new height or width is set, use existing measures.
$this->newWidth = round(isset($this->newWidth) ? $this->newWidth : $this->width);
$this->newHeight = round(isset($this->newHeight) ? $this->newHeight : $this->height);
return $this;
}
@@ -225,7 +250,7 @@ class CImage {
* @param boolean $keepRatio true to keep aspect ratio else false. Default is true.
* @param boolean $cropToFit true to crop image to fit in box specified by $newWidth and $newHeight. Default is false.
* @param integer $quality the quality to use when saving the file, range 0-100, default is full quality which is 100.
* @param array $crop.
* @param array/string $crop converts string of 1,2,3,4 to array 'width'=>1, 'height'=>2, 'start_x'=>3, 'start_y'=>4.
* @param array $filter.
*/
public function ResizeAndOutput($args) {
@@ -235,12 +260,19 @@ class CImage {
'keepRatio'=>true,
'cropToFit'=>false,
'quality'=>100,
'crop'=>array('w'=>null, 'h'=>null, 'x'=>0, 'y'=>0),
'crop'=>null, //array('width'=>null, 'height'=>null, 'start_x'=>0, 'start_y'=>0),
'filters'=>null,
);
// Convert crop settins from string to array
if(isset($args['crop']) && !is_array($args['crop'])) {
$args['crop'] = array();
$pices = explode(',', $args['crop']);
$args['crop'] = array(
'width' => $pices[0],
'height' => $pices[1],
'start_x' => $pices[2],
'start_y' => $pices[3],
);
}
// Convert filter settins from array of string to array of array
@@ -262,13 +294,16 @@ class CImage {
//echo "<pre>" . print_r($args['filters'], true) . "</pre>";
// Merge default arguments with incoming and set properties.
//$args = array_merge_recursive($defaults, $args);
$args = array_merge($defaults, $args);
foreach($defaults as $key=>$val) {
$this->{$key} = $args[$key];
}
//echo "<pre>" . print_r($this, true) . "</pre>";
// Init the object and do sanity checks on arguments
$this->Init()->CalculateNewWidthAndHeight();
//echo "<pre>" . print_r($this, true) . "</pre>";
// Use original image?
if(is_null($this->newWidth) && is_null($this->newHeight)) {
@@ -278,35 +313,75 @@ class CImage {
// Check cache before resizing.
$this->newFileName = $this->CreateFilename();
if(is_readable($this->newFileName)) {
$fileTime = filemtime($this->pathToImage);
$cacheTime = filemtime($this->newFileName);
$fileTime = filemtime($this->pathToImage);
$cacheTime = filemtime($this->newFileName);
if($fileTime <= $cacheTime) {
$this->Output($this->newFileName);
}
}
// Resize and output
// Resize and output and save new to cache
$this->Open()->ResizeAndSave();
}
/**
* Create a image and keep transparency for png and gifs.
*
* $param int $width of the new image.
* @param int $height of the new image.
* @returns image resource.
*/
public function CreateImageKeepTransparency($width, $height) {
//echo $width . "x" . $height . "<br>";
$img = imagecreatetruecolor($width, $height);
/*
if($this->fileExtension == 'png' || ($this->fileExtension == 'gif')) {
imagealphablending($img, false);
imagesavealpha($img, true);
$transparent = imagecolorallocatealpha($img, 255, 255, 255, 127);
imagefilledrectangle($img, 0, 0, $width, $height, $transparent);
}
*/
return $img;
}
/**
* Resize, crop and output the image.
*
*/
public function ResizeAndSave() {
// Do as crop, take only part of image
if($this->crop) {
//echo "Cropping";
$img = $this->CreateImageKeepTransparency($this->crop['width'], $this->crop['height']);
imagecopyresampled($img, $this->image, 0, 0, $this->crop['start_x'], $this->crop['start_y'], $this->crop['width'], $this->crop['height'], $this->crop['width'], $this->crop['height']);
$this->image = $img;
$this->width = $this->crop['width'];
$this->height = $this->crop['height'];
}
// Resize by crop to fit
if($this->cropToFit) {
//echo "Crop to fit";
$cropX = ($this->cropWidth/2) - ($this->newWidth/2);
$cropY = ($this->cropHeight/2) - ($this->newHeight/2);
$imgPreCrop = imagecreatetruecolor($this->cropWidth, $this->cropHeight);
$imageResized = imagecreatetruecolor($this->newWidth, $this->newHeight);
$imgPreCrop = $this->CreateImageKeepTransparency($this->cropWidth, $this->cropHeight);
$imageResized = $this->CreateImageKeepTransparency($this->newWidth, $this->newHeight);
imagecopyresampled($imgPreCrop, $this->image, 0, 0, 0, 0, $this->cropWidth, $this->cropHeight, $this->width, $this->height);
imagecopyresampled($imageResized, $imgPreCrop, 0, 0, $cropX, $cropY, $this->newWidth, $this->newHeight, $this->newWidth, $this->newHeight);
} else {
$imageResized = imagecreatetruecolor($this->newWidth, $this->newHeight);
}
// as is
else {
$imageResized = $this->CreateImageKeepTransparency($this->newWidth, $this->newHeight);
imagecopyresampled($imageResized, $this->image, 0, 0, 0, 0, $this->newWidth, $this->newHeight, $this->width, $this->height);
}
// Apply filters
if(isset($this->filters) && is_array($this->filters)) {
foreach($this->filters as $filter) {
switch($filter['argc']) {
@@ -342,10 +417,10 @@ class CImage {
case 'png':
// Scale quality from 0-100 to 0-9 and invert setting as 0 is best, not 9
$quality = 9 - round(($imageQuality/100) * 9);
$quality = 9 - round(($this->quality/100) * 9);
if (imagetypes() & IMG_PNG) {
if($this->saveFolder) {
imagepng($imageResized, $this->newFileName, $this->quality);
imagepng($imageResized, $this->newFileName, $quality);
}
$imgFunction = 'imagepng';
}
@@ -355,7 +430,7 @@ class CImage {
break;
}
header('Content-type: ' . $this->mime);
header('Last-Modified: ' . gmdate("D, d M Y H:i:s",time()) . " GMT");
header('Last-Modified: ' . gmdate("D, d M Y H:i:s", time()) . " GMT");
$imgFunction($imageResized);
exit;
}