mirror of
https://github.com/vichan-devel/vichan.git
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439 lines
12 KiB
PHP
439 lines
12 KiB
PHP
<?php
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/*
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* Copyright (c) 2010-2013 Tinyboard Development Group
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*/
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defined('TINYBOARD') or exit;
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class Image {
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public $src, $format, $image, $size;
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public function __construct($src, $format = false, $size = false) {
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global $config;
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$this->src = $src;
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$this->format = $format;
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if ($config['thumb_method'] == 'imagick') {
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$classname = 'ImageImagick';
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} elseif (in_array($config['thumb_method'], array('convert', 'convert+gifsicle', 'gm', 'gm+gifsicle'))) {
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$classname = 'ImageConvert';
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} else {
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$classname = 'Image' . strtoupper($this->format);
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if (!class_exists($classname)) {
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error(_('Unsupported file format: ') . $this->format);
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}
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}
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$this->image = new $classname($this, $size);
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if (!$this->image->valid()) {
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$this->delete();
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error($config['error']['invalidimg']);
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}
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$this->size = (object)array('width' => $this->image->_width(), 'height' => $this->image->_height());
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if ($this->size->width < 1 || $this->size->height < 1) {
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$this->delete();
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error($config['error']['invalidimg']);
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}
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}
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public function resize($extension, $max_width, $max_height) {
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global $config;
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if ($config['thumb_method'] == 'imagick') {
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$classname = 'ImageImagick';
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} elseif ($config['thumb_method'] == 'convert') {
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$classname = 'ImageConvert';
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} elseif ($config['thumb_method'] == 'convert+gifsicle') {
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$classname = 'ImageConvert';
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$gifsicle = true;
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} elseif ($config['thumb_method'] == 'gm') {
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$classname = 'ImageConvert';
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$gm = true;
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} elseif ($config['thumb_method'] == 'gm+gifsicle') {
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$classname = 'ImageConvert';
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$gm = true;
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$gifsicle = true;
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} else {
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$classname = 'Image' . strtoupper($extension);
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if (!class_exists($classname)) {
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error(_('Unsupported file format: ') . $extension);
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}
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}
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$thumb = new $classname(false);
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$thumb->src = $this->src;
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$thumb->format = $this->format;
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$thumb->original_width = $this->size->width;
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$thumb->original_height = $this->size->height;
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$x_ratio = $max_width / $this->size->width;
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$y_ratio = $max_height / $this->size->height;
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if (($this->size->width <= $max_width) && ($this->size->height <= $max_height)) {
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$width = $this->size->width;
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$height = $this->size->height;
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} elseif (($x_ratio * $this->size->height) < $max_height) {
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$height = ceil($x_ratio * $this->size->height);
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$width = $max_width;
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} else {
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$width = ceil($y_ratio * $this->size->width);
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$height = $max_height;
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}
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$thumb->_resize($this->image->image, $width, $height);
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return $thumb;
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}
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public function to($dst) {
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$this->image->to($dst);
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}
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public function delete() {
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file_unlink($this->src);
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}
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public function destroy() {
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$this->image->_destroy();
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}
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}
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class ImageGD {
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public function GD_create() {
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$this->image = imagecreatetruecolor($this->width, $this->height);
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}
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public function GD_copyresampled() {
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imagecopyresampled($this->image, $this->original, 0, 0, 0, 0, $this->width, $this->height, $this->original_width, $this->original_height);
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}
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public function GD_resize() {
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$this->GD_create();
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$this->GD_copyresampled();
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}
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}
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class ImageBase extends ImageGD {
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public $image, $src, $original, $original_width, $original_height, $width, $height;
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public function valid() {
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return (bool)$this->image;
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}
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public function __construct($img, $size = false) {
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if (method_exists($this, 'init'))
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$this->init();
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if ($size && $size[0] > 0 && $size[1] > 0) {
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$this->width = $size[0];
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$this->height = $size[1];
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}
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if ($img !== false) {
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$this->src = $img->src;
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$this->from();
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}
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}
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public function _width() {
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if (method_exists($this, 'width'))
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return $this->width();
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// use default GD functions
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return imagesx($this->image);
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}
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public function _height() {
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if (method_exists($this, 'height'))
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return $this->height();
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// use default GD functions
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return imagesy($this->image);
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}
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public function _destroy() {
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if (method_exists($this, 'destroy'))
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return $this->destroy();
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// use default GD functions
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return imagedestroy($this->image);
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}
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public function _resize($original, $width, $height) {
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$this->original = &$original;
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$this->width = $width;
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$this->height = $height;
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if (method_exists($this, 'resize'))
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$this->resize();
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else
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// use default GD functions
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$this->GD_resize();
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}
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}
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class ImageImagick extends ImageBase {
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public function init() {
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$this->image = new Imagick();
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$this->image->setBackgroundColor(new ImagickPixel('transparent'));
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}
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public function from() {
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try {
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$this->image->readImage($this->src);
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} catch(ImagickException $e) {
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// invalid image
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$this->image = false;
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}
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}
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public function to($src) {
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global $config;
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if ($config['strip_exif']) {
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$this->image->stripImage();
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}
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if (preg_match('/\.gif$/i', $src))
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$this->image->writeImages($src, true);
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else
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$this->image->writeImage($src);
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}
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public function width() {
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return $this->image->getImageWidth();
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}
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public function height() {
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return $this->image->getImageHeight();
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}
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public function destroy() {
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return $this->image->destroy();
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}
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public function resize() {
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global $config;
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if ($this->format == 'gif' && ($config['thumb_ext'] == 'gif' || $config['thumb_ext'] == '')) {
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$this->image = new Imagick();
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$this->image->setFormat('gif');
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$keep_frames = array();
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for ($i = 0; $i < $this->original->getNumberImages(); $i += floor($this->original->getNumberImages() / $config['thumb_keep_animation_frames']))
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$keep_frames[] = $i;
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$i = 0;
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$delay = 0;
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foreach ($this->original as $frame) {
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$delay += $frame->getImageDelay();
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if (in_array($i, $keep_frames)) {
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// $frame->scaleImage($this->width, $this->height, false);
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$frame->sampleImage($this->width, $this->height);
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$frame->setImagePage($this->width, $this->height, 0, 0);
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$frame->setImageDelay($delay);
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$delay = 0;
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$this->image->addImage($frame->getImage());
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}
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$i++;
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}
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} else {
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$this->image = clone $this->original;
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$this->image->scaleImage($this->width, $this->height, false);
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}
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}
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}
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class ImageConvert extends ImageBase {
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public $width, $height, $temp, $gm = false, $gifsicle = false;
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public function init() {
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global $config;
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if ($config['thumb_method'] == 'gm' || $config['thumb_method'] == 'gm+gifsicle')
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$this->gm = true;
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if ($config['thumb_method'] == 'convert+gifsicle' || $config['thumb_method'] == 'gm+gifsicle')
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$this->gifsicle = true;
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$this->temp = false;
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}
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public function get_size($src, $try_gd_first = true) {
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if ($try_gd_first) {
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if ($size = @getimagesize($src))
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return $size;
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}
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$size = shell_exec_error(($this->gm ? 'gm ' : '') . 'identify -format "%w %h" ' . escapeshellarg($src . '[0]'));
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if (preg_match('/^(\d+) (\d+)$/', $size, $m))
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return array($m[1], $m[2]);
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return false;
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}
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public function from() {
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if ($this->width > 0 && $this->height > 0) {
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$this->image = true;
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return;
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}
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$size = $this->get_size($this->src, false);
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if ($size) {
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$this->width = $size[0];
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$this->height = $size[1];
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$this->image = true;
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} else {
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// mark as invalid
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$this->image = false;
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}
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}
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public function to($src) {
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global $config;
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if (!$this->temp) {
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if ($config['strip_exif']) {
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if($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
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escapeshellarg($this->src) . ' -auto-orient -strip ' . escapeshellarg($src))) {
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$this->destroy();
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error(_('Failed to redraw image!'), null, $error);
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}
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} else {
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if($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
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escapeshellarg($this->src) . ' -auto-orient ' . escapeshellarg($src))) {
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$this->destroy();
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error(_('Failed to redraw image!'), null, $error);
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}
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}
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} else {
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rename($this->temp, $src);
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chmod($src, 0664);
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$this->temp = false;
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}
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}
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public function width() {
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return $this->width;
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}
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public function height() {
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return $this->height;
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}
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public function destroy() {
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if ($this->temp !== false) {
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@unlink($this->temp);
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$this->temp = false;
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}
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}
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public function resize() {
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global $config;
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if ($this->temp) {
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// remove old
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$this->destroy();
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}
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$this->temp = tempnam($config['tmp'], 'convert') . ($config['thumb_ext'] == '' ? '' : '.' . $config['thumb_ext']);
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$config['thumb_keep_animation_frames'] = (int)$config['thumb_keep_animation_frames'];
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if ($this->format == 'gif' && ($config['thumb_ext'] == 'gif' || $config['thumb_ext'] == '') && $config['thumb_keep_animation_frames'] > 1) {
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if ($this->gifsicle) {
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if (($error = shell_exec("gifsicle -w --unoptimize -O2 --resize {$this->width}x{$this->height} < " .
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escapeshellarg($this->src . '') . " \"#0-{$config['thumb_keep_animation_frames']}\" -o " .
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escapeshellarg($this->temp))) || !file_exists($this->temp)) {
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$this->destroy();
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error(_('Failed to resize image!'), null, $error);
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}
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} else {
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$convert_args = &$config['convert_args'];
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if (($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
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sprintf($convert_args,
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$this->width,
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$this->height,
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escapeshellarg($this->src),
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$this->width,
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$this->height,
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escapeshellarg($this->temp)))) || !file_exists($this->temp)) {
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$this->destroy();
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error(_('Failed to resize image!'), null, $error);
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}
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if ($size = $this->get_size($this->temp)) {
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$this->width = $size[0];
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$this->height = $size[1];
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}
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}
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} else {
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$convert_args = &$config['convert_args'];
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if (($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
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sprintf($convert_args,
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$this->width,
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$this->height,
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escapeshellarg($this->src . '[0]'),
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$this->width,
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$this->height,
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escapeshellarg($this->temp)))) || !file_exists($this->temp)) {
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if (strpos($error, "known incorrect sRGB profile") === false &&
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strpos($error, "iCCP: Not recognizing known sRGB profile that has been edited") === false &&
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strpos($error, "cHRM chunk does not match sRGB") === false) {
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$this->destroy();
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error(_('Failed to resize image!')." "._('Details: ').nl2br(htmlspecialchars($error)), null, array('convert_error' => $error));
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}
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if (!file_exists($this->temp)) {
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$this->destroy();
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error(_('Failed to resize image!'), null, $error);
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}
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}
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if ($size = $this->get_size($this->temp)) {
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$this->width = $size[0];
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$this->height = $size[1];
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}
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}
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}
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}
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class ImagePNG extends ImageBase {
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public function from() {
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$this->image = @imagecreatefrompng($this->src);
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}
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public function to($src) {
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global $config;
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imagepng($this->image, $src);
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}
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public function resize() {
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$this->GD_create();
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imagecolortransparent($this->image, imagecolorallocatealpha($this->image, 0, 0, 0, 0));
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imagesavealpha($this->image, true);
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imagealphablending($this->image, false);
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$this->GD_copyresampled();
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}
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}
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class ImageGIF extends ImageBase {
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public function from() {
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$this->image = @imagecreatefromgif($this->src);
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}
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public function to($src) {
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imagegif ($this->image, $src);
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}
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public function resize() {
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$this->GD_create();
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imagecolortransparent($this->image, imagecolorallocatealpha($this->image, 0, 0, 0, 0));
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imagesavealpha($this->image, true);
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$this->GD_copyresampled();
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}
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}
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class ImageJPG extends ImageBase {
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public function from() {
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$this->image = @imagecreatefromjpeg($this->src);
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}
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public function to($src) {
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imagejpeg($this->image, $src);
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}
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}
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class ImageJPEG extends ImageJPG {
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}
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class ImageBMP extends ImageBase {
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public function from() {
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$this->image = @imagecreatefrombmp($this->src);
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}
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public function to($src) {
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imagebmp($this->image, $src);
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}
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}
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class ImageWEBP extends ImageBase {
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public function from() {
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$this->image = @imagecreatefromwebp($this->src);
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}
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public function to($src) {
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imagewebp($this->image, $src);
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}
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}
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