/**
* Convert an image. Returns TRUE when successfull, FALSE if image is
* not a truecolor image.
*
* @param img.Image image
* @return bool
* @throws img.ImagingException
*/
public function convert($image)
{
if (!imageistruecolor($image->handle)) {
return false;
}
$tmp = Image::create($image->getWidth(), $image->getHeight(), IMG_TRUECOLOR);
$tmp->copyFrom($image);
imagetruecolortopalette($image->handle, $this->dither, $this->ncolors);
imagecolormatch($tmp->handle, $image->handle);
unset($tmp);
return true;
}
function asPalette($nColors = 255, $dither = null, $matchPalette = true)
{
$nColors = intval($nColors);
if ($nColors < 1) {
$nColors = 1;
} elseif ($nColors > 255) {
$nColors = 255;
}
if ($dither === null) {
$dither = $this->isTransparent();
}
$temp = $this->copy();
imagetruecolortopalette($temp->handle, $dither, $nColors);
if ($matchPalette == true) {
imagecolormatch($this->handle, $temp->handle);
}
if ($this->isTransparent()) {
$trgb = $this->getTransparentColorRGB();
$tci = $temp->getClosestColor($trgb);
$temp->setTransparentColor($tci);
}
$temp->releaseHandle();
return new wiPaletteImage($temp->handle);
}
<?php $ima = imagecreatetruecolor(110, 20); $background_color = imagecolorallocate($ima, 0, 0, 0); $imb = imagecreatetruecolor(110, 20); $background_color = imagecolorallocate($imb, 0, 0, 100); var_dump(imagecolormatch($ima, $imb));
function image_aplatir($im, $format = 'jpg', $coul = '000000', $qualite = null, $transparence = false)
{
if ($qualite === null) {
if ($format == 'jpg') {
$qualite = _IMG_GD_QUALITE;
} elseif ($format == 'png') {
$qualite = 0;
} else {
$qualite = 128;
}
}
$fonction = array('image_aplatir', func_get_args());
$image = _image_valeurs_trans($im, "aplatir-{$format}-{$coul}-{$qualite}-{$transparence}", $format, $fonction);
if (!$image) {
return "";
}
include_spip('inc/filtres');
$couleurs = _couleur_hex_to_dec($coul);
$dr = $couleurs["red"];
$dv = $couleurs["green"];
$db = $couleurs["blue"];
$x_i = $image["largeur"];
$y_i = $image["hauteur"];
$im = $image["fichier"];
$dest = $image["fichier_dest"];
$creer = $image["creer"];
if ($creer) {
$im = @$image["fonction_imagecreatefrom"]($im);
imagepalettetotruecolor($im);
$im_ = imagecreatetruecolor($x_i, $y_i);
if ($image["format_source"] == "gif" and function_exists('ImageCopyResampled')) {
// Si un GIF est transparent,
// fabriquer un PNG transparent
// Conserver la transparence
@imagealphablending($im_, false);
@imagesavealpha($im_, true);
if (function_exists("imageAntiAlias")) {
imageAntiAlias($im_, true);
}
@ImageCopyResampled($im_, $im, 0, 0, 0, 0, $x_i, $y_i, $x_i, $y_i);
imagedestroy($im);
$im = $im_;
}
// allouer la couleur de fond
if ($transparence) {
@imagealphablending($im_, false);
@imagesavealpha($im_, true);
$color_t = imagecolorallocatealpha($im_, $dr, $dv, $db, 127);
} else {
$color_t = ImageColorAllocate($im_, $dr, $dv, $db);
}
imagefill($im_, 0, 0, $color_t);
//??
//$dist = abs($trait);
$transp_x = false;
if ($image["format_source"] == "jpg") {
$im_ =& $im;
} else {
for ($x = 0; $x < $x_i; $x++) {
for ($y = 0; $y < $y_i; $y++) {
$rgb = ImageColorAt($im, $x, $y);
$a = $rgb >> 24 & 0xff;
$r = $rgb >> 16 & 0xff;
$g = $rgb >> 8 & 0xff;
$b = $rgb & 0xff;
$a = (127 - $a) / 127;
if ($a == 1) {
// Limiter calculs
$r = $r;
$g = $g;
$b = $b;
} else {
if ($a == 0) {
// Limiter calculs
$r = $dr;
$g = $dv;
$b = $db;
$transp_x = $x;
// Memoriser un point transparent
$transp_y = $y;
} else {
$r = round($a * $r + $dr * (1 - $a));
$g = round($a * $g + $dv * (1 - $a));
$b = round($a * $b + $db * (1 - $a));
}
}
$a = (1 - $a) * 127;
$color = ImageColorAllocateAlpha($im_, $r, $g, $b, $a);
imagesetpixel($im_, $x, $y, $color);
}
}
}
// passer en palette si besoin
if ($format == 'gif' or $format == 'png' and $qualite !== 0) {
// creer l'image finale a palette
// (on recycle l'image initiale si possible, sinon on en recree une)
if ($im === $im_) {
$im = imagecreatetruecolor($x_i, $y_i);
}
@imagetruecolortopalette($im, true, $qualite);
//$im = imagecreate($x_i, $y_i);
// copier l'image true color vers la palette
imagecopy($im, $im_, 0, 0, 0, 0, $x_i, $y_i);
// matcher les couleurs au mieux par rapport a l'image initiale
// si la fonction est disponible (php>=4.3)
if (function_exists('imagecolormatch')) {
@imagecolormatch($im_, $im);
}
if ($format == 'gif' && $transparence && $transp_x) {
$color_t = ImagecolorAt($im, $transp_x, $transp_y);
if ($format == "gif" && $transparence) {
@imagecolortransparent($im, $color_t);
}
}
// produire le resultat
_image_gd_output($im, $image, $qualite);
} else {
_image_gd_output($im_, $image, $qualite);
}
if ($im !== $im_) {
imagedestroy($im);
}
imagedestroy($im_);
}
return _image_ecrire_tag($image, array('src' => $dest));
}
<?php $im = imagecreatetruecolor(5, 5); $im2 = imagecreate(5, 5); imagecolormatch($im, $im2); echo "ok\n"; imagedestroy($im);
public function get($type = 'png', $interlace = false, $quality = NULL, $filter = PNG_ALL_FILTERS)
{
$type = strtolower($type);
if ($interlace === true) {
imageinterlace($this->image, 1);
}
ob_start();
switch ($type) {
case 'png':
$quality = $quality === NULL ? 9 : max(0, min(9, (int) $quality));
imagepng($this->image, NULL, $quality, $filter);
break;
case 'jpeg':
$quality = $quality === NULL ? 100 : max(0, min(100, (int) $quality));
imagejpeg($this->image, NULL, $quality);
break;
case 'gif':
$quality = $quality === NULL ? 255 : max(0, min(255, (int) $quality));
$temp = imagecreatetruecolor($this->width, $this->height);
imagecopy($temp, $this->image, 0, 0, 0, 0, $this->width, $this->height);
imagetruecolortopalette($temp, false, $quality);
imagecolormatch($this->image, $temp);
imagegif($temp);
break;
}
return trim(ob_get_clean());
}
public function match($sourceImage = '')
{
if (!is_resource($sourceImage)) {
return Error::set(lang('Error', 'resourceParameter', '1.(sourceImage)'));
}
imagecolormatch($this->canvas, $sourceImage);
return $this;
}
/**
* @see WideImage_Image#asPalette($nColors, $dither, $matchPalette)
*/
function asPalette($nColors = 255, $dither = null, $matchPalette = true)
{
$nColors = intval($nColors);
if ($nColors < 1) {
$nColors = 1;
} elseif ($nColors > 255) {
$nColors = 255;
}
if ($dither === null) {
$dither = $this->isTransparent();
}
$temp = $this->copy();
imagetruecolortopalette($temp->handle, $dither, $nColors);
if ($matchPalette == true && function_exists('imagecolormatch')) {
imagecolormatch($this->handle, $temp->handle);
}
// The code below isn't working properly; it corrupts transparency on some palette->tc->palette conversions.
// Why is this code here?
/*
if ($this->isTransparent())
{
$trgb = $this->getTransparentColorRGB();
$tci = $temp->getClosestColor($trgb);
$temp->setTransparentColor($tci);
}
/**/
$temp->releaseHandle();
return new WideImage_PaletteImage($temp->handle);
}
public function ImageTrueColorToPalette2(&$image, $dither, $ncolors)
{
// http://www.php.net/manual/en/function.imagetruecolortopalette.php
// zmorris at zsculpt dot com (17-Aug-2004 06:58)
$width = imagesx($image);
$height = imagesy($image);
$image_copy = imagecreatetruecolor($width, $height);
//imagecopymerge($image_copy, $image, 0, 0, 0, 0, $width, $height, 100);
imagecopy($image_copy, $image, 0, 0, 0, 0, $width, $height);
imagetruecolortopalette($image, $dither, $ncolors);
imagecolormatch($image_copy, $image);
imagedestroy($image_copy);
return true;
}
function generate_thumbnails($source, $targets_and_constraints, $target_format, $thumbnail_quality)
{
$files_created_in_operation = array();
list($width, $height) = getimagesize($source);
$ok = false;
if ($width > 0) {
$pixel_size_buffer = 1.25;
$max_bytes = $comicpress_manager->convert_short_size_string_to_bytes(ini_get('memory_limit'));
if ($max_bytes > 0) {
$max_thumb_size = 0;
foreach ($targets_and_constraints as $target_and_constraint) {
list($target, $constraint) = $target_and_constraint;
$width_to_use = $constraint['width'];
$archive_comic_height = (int) ($width_to_use * $height / $width);
$max_thumb_size = max($width_to_use * $archive_comic_height * 4, $max_thumb_size);
}
$input_image_size = $width * $height * 4;
if (strtolower(pathinfo($input, PATHINFO_EXTENSION)) == "gif") {
$input_image_size *= 2;
}
$recommended_size = ($input_image_size + $max_thumb_size) * $pixel_size_buffer;
if (function_exists('memory_get_usage')) {
$recommended_size += memory_get_usage();
}
if ($recommended_size > $max_bytes) {
$comicpress_manager->warnings[] = sprintf(__("<strong>You don't have enough memory available to PHP and GD to process this file.</strong> You should <strong>set your PHP <tt>memory_size</tt></strong> to at least <strong><tt>%sM</tt></strong> and try again. For more information, read the ComicPress Manager FAQ.", 'comicpress-manager'), (int) ($recommended_size / (1024 * 1024)));
return false;
}
}
foreach ($targets_and_constraints as $target_and_constraint) {
list($target, $constraint) = $target_and_constraint;
$width_to_use = $constraint['width'];
$archive_comic_height = (int) ($width_to_use * $height / $width);
$pathinfo = pathinfo($source);
$thumb_image = imagecreatetruecolor($width_to_use, $archive_comic_height);
imagealphablending($thumb_image, true);
switch (strtolower($pathinfo['extension'])) {
case "jpg":
case "jpeg":
$comic_image = imagecreatefromjpeg($source);
break;
case "gif":
$is_gif = true;
$temp_comic_image = imagecreatefromgif($source);
list($width, $height) = getimagesize($input);
$comic_image = imagecreatetruecolor($width, $height);
imagecopy($comic_image, $temp_comic_image, 0, 0, 0, 0, $width, $height);
imagedestroy($temp_comic_image);
break;
case "png":
$comic_image = imagecreatefrompng($source);
break;
default:
return false;
}
imagealphablending($comic_image, true);
if ($is_palette = !imageistruecolor($comic_image)) {
$number_of_colors = imagecolorstotal($comic_image);
}
imagecopyresampled($thumb_image, $comic_image, 0, 0, 0, 0, $width_to_use, $archive_comic_height, $width, $height);
$ok = true;
@touch($target);
if (file_exists($target)) {
@unlink($target);
switch (strtolower($target_format)) {
case "jpg":
case "jpeg":
if (imagetypes() & IMG_JPG) {
@imagejpeg($thumb_image, $target, $comicpress_manager->get_cpm_option("cpm-thumbnail-quality"));
} else {
return false;
}
break;
case "gif":
if (imagetypes() & IMG_GIF) {
if (function_exists('imagecolormatch')) {
$temp_comic_image = imagecreate($width_to_use, $archive_comic_height);
imagecopymerge($temp_comic_image, $thumb_image, 0, 0, 0, 0, $width_to_use, $archive_comic_height, 100);
imagecolormatch($thumb_image, $temp_comic_image);
@imagegif($temp_comic_image, $target);
imagedestroy($temp_comic_image);
} else {
@imagegif($thumb_image, $target);
}
} else {
return false;
}
break;
case "png":
if (imagetypes() & IMG_PNG) {
if ($is_palette) {
imagetruecolortopalette($thumb_image, true, $number_of_colors);
}
@imagepng($thumb_image, $target, 9);
} else {
return false;
}
break;
default:
return false;
}
}
if (!file_exists($target)) {
$ok = false;
} else {
@chmod($target, CPM_FILE_UPLOAD_CHMOD);
$files_created_in_operation[] = $target;
}
imagedestroy($comic_image);
imagedestroy($thumb_image);
}
}
return $ok ? $files_created_in_operation : false;
}
public function match($sourceImage) : InternalGD
{
if (!is_resource($sourceImage)) {
throw new InvalidArgumentException('Error', 'resourceParameter', '1.($sourceImage)');
}
imagecolormatch($this->canvas, $sourceImage);
return $this;
}
/**
* @see GDImage_Image#asPalette($nColors, $dither, $matchPalette)
*/
function asPalette($nColors = 255, $dither = null, $matchPalette = true)
{
$nColors = intval($nColors);
if ($nColors < 1) {
$nColors = 1;
} elseif ($nColors > 255) {
$nColors = 255;
}
if ($dither === null) {
$dither = $this->isTransparent();
}
$temp = $this->copy();
imagetruecolortopalette($temp->handle, $dither, $nColors);
if ($matchPalette == true && function_exists('imagecolormatch')) {
imagecolormatch($this->handle, $temp->handle);
}
$temp->releaseHandle();
return new GDImage_PaletteImage($temp->handle);
}
<?php $ima = imagecreatetruecolor(110, 20); $background_color = imagecolorallocate($ima, 0, 0, 0); var_dump(imagecolormatch($ima));
/**
* Write a thumbnail image to the thumbnail folders.
* @param string $input The input image filename.
* @param string $target_filename The filename for the thumbnails.
* @param boolean $do_rebuild If true, force rebuilding thumbnails.
* @return mixed True if successful, false if not, null if unable to write.
*/
function cpm_write_thumbnail($input, $target_filename, $do_rebuild = false)
{
global $cpm_config;
$target_format = pathinfo($target_filename, PATHINFO_EXTENSION);
$files_created_in_operation = array();
$write_targets = array();
foreach ($cpm_config->separate_thumbs_folder_defined as $type => $value) {
if ($value) {
if ($cpm_config->thumbs_folder_writable[$type]) {
if (cpm_option("cpm-{$type}-generate-thumbnails") == 1) {
$converted_target_filename = preg_replace('#\\.[^\\.]+$#', '', $target_filename) . '.' . $target_format;
$target = CPM_DOCUMENT_ROOT . '/' . $cpm_config->properties[$type . "_comic_folder"];
if (($subdir = cpm_get_subcomic_directory()) !== false) {
$target .= '/' . $subdir;
}
$target .= '/' . $converted_target_filename;
if (!in_array($target, $write_targets)) {
$write_targets[$type] = $target;
}
}
}
}
}
if (count($write_targets) > 0) {
if (!$do_rebuild) {
if (file_exists($input)) {
if (file_exists($target)) {
if (filemtime($input) > filemtime($target)) {
$do_rebuild = true;
}
} else {
$do_rebuild = true;
}
}
}
if ($do_rebuild) {
switch ($cpm_config->get_scale_method()) {
case CPM_SCALE_NONE:
return null;
case CPM_SCALE_IMAGEMAGICK:
$original_size = getimagesize($input);
$unique_colors = exec("identify -format '%k' '{$input}'");
if (empty($unique_colors)) {
$unique_colors = 256;
}
$ok = true;
foreach ($write_targets as $type => $target) {
$width_to_use = isset($cpm_config->properties["{$type}_comic_width"]) ? $cpm_config->properties["{$type}_comic_width"] : $cpm_config->properties['archive_comic_width'];
if ($width_to_use < $original_size[0]) {
$command = array("convert", "\"{$input}\"", "-filter Lanczos", "-resize " . $width_to_use . "x");
$im_target = $target;
switch (strtolower($target_format)) {
case "jpg":
case "jpeg":
$command[] = "-quality " . cpm_option("cpm-thumbnail-quality");
break;
case "gif":
$command[] = "-colors {$unique_colors}";
break;
case "png":
if ($unique_colors <= 256) {
$im_target = "png8:{$im_target}";
$command[] = "-colors {$unique_colors}";
}
$command[] = "-quality 100";
break;
default:
}
$command[] = "\"{$im_target}\"";
$convert_to_thumb = escapeshellcmd(implode(" ", $command));
exec($convert_to_thumb);
if (!file_exists($target)) {
$ok = false;
} else {
@chmod($target, CPM_FILE_UPLOAD_CHMOD);
$files_created_in_operation[] = $target;
}
} else {
copy($input, $target);
}
}
return $ok ? $files_created_in_operation : false;
case CPM_SCALE_GD:
list($width, $height) = getimagesize($input);
if ($width > 0) {
$pixel_size_buffer = 1.25;
$max_bytes = cpm_short_size_string_to_bytes(ini_get('memory_limit'));
if ($max_bytes > 0) {
$max_thumb_size = 0;
foreach ($write_targets as $type => $target) {
$width_to_use = isset($cpm_config->properties["{$type}_comic_width"]) ? $cpm_config->properties["{$type}_comic_width"] : $cpm_config->properties['archive_comic_width'];
$archive_comic_height = (int) ($width_to_use * $height / $width);
$max_thumb_size = max($width_to_use * $archive_comic_height * 4, $max_thumb_size);
}
$input_image_size = $width * $height * 4;
if (strtolower(pathinfo($input, PATHINFO_EXTENSION)) == "gif") {
$input_image_size *= 2;
}
$recommended_size = ($input_image_size + $max_thumb_size) * $pixel_size_buffer;
if (function_exists('memory_get_usage')) {
$recommended_size += memory_get_usage();
}
if ($recommended_size > $max_bytes) {
$cpm_config->warnings[] = sprintf(__("<strong>You don't have enough memory available to PHP and GD to process this file.</strong> You should <strong>set your PHP <tt>memory_size</tt></strong> to at least <strong><tt>%sM</tt></strong> and try again. For more information, read the ComicPress Manager FAQ.", 'comicpress-manager'), (int) ($recommended_size / (1024 * 1024)));
return false;
}
}
foreach ($write_targets as $type => $target) {
$width_to_use = isset($cpm_config->properties["{$type}_comic_width"]) ? $cpm_config->properties["{$type}_comic_width"] : $cpm_config->properties['archive_comic_width'];
if ($width_to_use < $width) {
$archive_comic_height = (int) ($width_to_use * $height / $width);
$pathinfo = pathinfo($input);
$thumb_image = imagecreatetruecolor($width_to_use, $archive_comic_height);
imagealphablending($thumb_image, true);
switch (strtolower($pathinfo['extension'])) {
case "jpg":
case "jpeg":
$comic_image = imagecreatefromjpeg($input);
break;
case "gif":
$is_gif = true;
$temp_comic_image = imagecreatefromgif($input);
list($width, $height) = getimagesize($input);
$comic_image = imagecreatetruecolor($width, $height);
imagecopy($comic_image, $temp_comic_image, 0, 0, 0, 0, $width, $height);
imagedestroy($temp_comic_image);
break;
case "png":
$comic_image = imagecreatefrompng($input);
break;
default:
return false;
}
imagealphablending($comic_image, true);
if ($is_palette = !imageistruecolor($comic_image)) {
$number_of_colors = imagecolorstotal($comic_image);
}
imagecopyresampled($thumb_image, $comic_image, 0, 0, 0, 0, $width_to_use, $archive_comic_height, $width, $height);
$ok = true;
@touch($target);
if (file_exists($target)) {
@unlink($target);
switch (strtolower($target_format)) {
case "jpg":
case "jpeg":
if (imagetypes() & IMG_JPG) {
@imagejpeg($thumb_image, $target, cpm_option("cpm-thumbnail-quality"));
} else {
return false;
}
break;
case "gif":
if (imagetypes() & IMG_GIF) {
if (function_exists('imagecolormatch')) {
$temp_comic_image = imagecreate($width_to_use, $archive_comic_height);
imagecopymerge($temp_comic_image, $thumb_image, 0, 0, 0, 0, $width_to_use, $archive_comic_height, 100);
imagecolormatch($thumb_image, $temp_comic_image);
@imagegif($temp_comic_image, $target);
imagedestroy($temp_comic_image);
} else {
@imagegif($thumb_image, $target);
}
} else {
return false;
}
break;
case "png":
if (imagetypes() & IMG_PNG) {
if ($is_palette) {
imagetruecolortopalette($thumb_image, true, $number_of_colors);
}
@imagepng($thumb_image, $target, 9);
} else {
return false;
}
break;
default:
return false;
}
}
} else {
copy($input, $target);
}
if (!file_exists($target)) {
$ok = false;
} else {
@chmod($target, CPM_FILE_UPLOAD_CHMOD);
$files_created_in_operation[] = $target;
}
imagedestroy($comic_image);
imagedestroy($thumb_image);
}
} else {
$ok = false;
}
return $ok ? $files_created_in_operation : false;
}
}
}
return null;
}
/**
* Resize an image
* @param string
* @param integer
* @param integer
* @param string
* @param string
* @return string
*/
protected function getImage($image, $width, $height, $mode = '', $target = null)
{
if (!strlen($image)) {
return null;
}
$image = urldecode($image);
// Check whether the file exists
if (!file_exists(TL_ROOT . '/' . $image)) {
$this->log('Image "' . $image . '" could not be found', 'Controller getImage()', TL_ERROR);
return null;
}
$objFile = new File($image);
$arrAllowedTypes = trimsplit(',', strtolower($GLOBALS['TL_CONFIG']['validImageTypes']));
// Check the file type
if (!in_array($objFile->extension, $arrAllowedTypes)) {
$this->log('Image type "' . $objFile->extension . '" was not allowed to be processed', 'Controller getImage()', TL_ERROR);
return null;
}
// No resizing required
if ($objFile->width == $width && $objFile->height == $height) {
return $image;
}
$strCacheName = 'system/html/' . $objFile->filename . '-' . substr(md5('-w' . $width . '-h' . $height . '-' . $image . '-' . $mode . '-' . $objFile->mtime), 0, 8) . '.' . $objFile->extension;
// Return the path of the new image if it exists already
if (file_exists(TL_ROOT . '/' . $strCacheName)) {
return $strCacheName;
}
// HOOK: add custom logic
if (isset($GLOBALS['TL_HOOKS']['getImage']) && is_array($GLOBALS['TL_HOOKS']['getImage'])) {
foreach ($GLOBALS['TL_HOOKS']['getImage'] as $callback) {
$this->import($callback[0]);
$return = $this->{$callback}[0]->{$callback}[1]($image, $width, $height, $mode, $strCacheName, $objFile, $target);
if (is_string($return)) {
return $return;
}
}
}
// Return the path to the original image if the GDlib cannot handle it
if (!extension_loaded('gd') || !$objFile->isGdImage || $objFile->width > $GLOBALS['TL_CONFIG']['gdMaxImgWidth'] || $objFile->height > $GLOBALS['TL_CONFIG']['gdMaxImgHeight'] || !$width && !$height || $width > 1200 || $height > 1200) {
return $image;
}
$intPositionX = 0;
$intPositionY = 0;
$intWidth = $width;
$intHeight = $height;
// Mode-specific changes
if ($intWidth && $intHeight) {
switch ($mode) {
case 'proportional':
if ($objFile->width >= $objFile->height) {
unset($height, $intHeight);
} else {
unset($width, $intWidth);
}
break;
case 'box':
if (ceil($objFile->height * $width / $objFile->width) <= $intHeight) {
unset($height, $intHeight);
} else {
unset($width, $intWidth);
}
break;
}
}
// Resize width and height and crop the image if necessary
if ($intWidth && $intHeight) {
if ($intWidth * $objFile->height != $intHeight * $objFile->width) {
$intWidth = ceil($objFile->width * $height / $objFile->height);
$intPositionX = -intval(($intWidth - $width) / 2);
if ($intWidth < $width) {
$intWidth = $width;
$intHeight = ceil($objFile->height * $width / $objFile->width);
$intPositionX = 0;
$intPositionY = -intval(($intHeight - $height) / 2);
}
}
$strNewImage = imagecreatetruecolor($width, $height);
} elseif ($intWidth) {
$intHeight = ceil($objFile->height * $width / $objFile->width);
$strNewImage = imagecreatetruecolor($intWidth, $intHeight);
} elseif ($intHeight) {
$intWidth = ceil($objFile->width * $height / $objFile->height);
$strNewImage = imagecreatetruecolor($intWidth, $intHeight);
}
$arrGdinfo = gd_info();
$strGdVersion = preg_replace('/[^0-9\\.]+/', '', $arrGdinfo['GD Version']);
switch ($objFile->extension) {
case 'gif':
if ($arrGdinfo['GIF Read Support']) {
$strSourceImage = imagecreatefromgif(TL_ROOT . '/' . $image);
$intTranspIndex = imagecolortransparent($strSourceImage);
// Handle transparency
if ($intTranspIndex >= 0 && $intTranspIndex < imagecolorstotal($strSourceImage)) {
$arrColor = imagecolorsforindex($strSourceImage, $intTranspIndex);
$intTranspIndex = imagecolorallocate($strNewImage, $arrColor['red'], $arrColor['green'], $arrColor['blue']);
imagefill($strNewImage, 0, 0, $intTranspIndex);
imagecolortransparent($strNewImage, $intTranspIndex);
}
}
break;
case 'jpg':
case 'jpeg':
if ($arrGdinfo['JPG Support'] || $arrGdinfo['JPEG Support']) {
$strSourceImage = imagecreatefromjpeg(TL_ROOT . '/' . $image);
}
break;
case 'png':
if ($arrGdinfo['PNG Support']) {
$strSourceImage = imagecreatefrompng(TL_ROOT . '/' . $image);
// Handle transparency (GDlib >= 2.0 required)
if (version_compare($strGdVersion, '2.0', '>=')) {
imagealphablending($strNewImage, false);
$intTranspIndex = imagecolorallocatealpha($strNewImage, 0, 0, 0, 127);
imagefill($strNewImage, 0, 0, $intTranspIndex);
imagesavealpha($strNewImage, true);
}
}
break;
}
// The new image could not be created
if (!$strSourceImage) {
$this->log('Image "' . $image . '" could not be processed', 'Controller getImage()', TL_ERROR);
return null;
}
imagecopyresampled($strNewImage, $strSourceImage, $intPositionX, $intPositionY, 0, 0, $intWidth, $intHeight, $objFile->width, $objFile->height);
// Fallback to PNG if GIF ist not supported
if ($objFile->extension == 'gif' && !$arrGdinfo['GIF Create Support']) {
$objFile->extension = 'png';
}
// Create the new image
switch ($objFile->extension) {
case 'gif':
imagegif($strNewImage, TL_ROOT . '/' . $strCacheName);
break;
case 'jpg':
case 'jpeg':
imagejpeg($strNewImage, TL_ROOT . '/' . $strCacheName, !$GLOBALS['TL_CONFIG']['jpgQuality'] ? 80 : $GLOBALS['TL_CONFIG']['jpgQuality']);
break;
case 'png':
// Optimize non-truecolor images (see #2426)
if (version_compare($strGdVersion, '2.0', '>=') && function_exists('imagecolormatch') && !imageistruecolor($strSourceImage)) {
// TODO: make it work with transparent images, too
if (imagecolortransparent($strSourceImage) == -1) {
$intColors = imagecolorstotal($strSourceImage);
// Convert to a palette image
// @see http://www.php.net/manual/de/function.imagetruecolortopalette.php#44803
if ($intColors > 0 && $intColors < 256) {
$wi = imagesx($strNewImage);
$he = imagesy($strNewImage);
$ch = imagecreatetruecolor($wi, $he);
imagecopymerge($ch, $strNewImage, 0, 0, 0, 0, $wi, $he, 100);
imagetruecolortopalette($strNewImage, false, $intColors);
imagecolormatch($ch, $strNewImage);
imagedestroy($ch);
}
}
}
imagepng($strNewImage, TL_ROOT . '/' . $strCacheName);
break;
}
// Destroy the temporary images
imagedestroy($strSourceImage);
imagedestroy($strNewImage);
// Resize the original image
if ($target) {
$this->import('Files');
$this->Files->rename($strCacheName, $target);
return $target;
}
// Set the file permissions when the Safe Mode Hack is used
if ($GLOBALS['TL_CONFIG']['useFTP']) {
$this->import('Files');
$this->Files->chmod($strCacheName, 0644);
}
// Return the path to new image
return $strCacheName;
}
/**
* Resize an image and store the resized version in the assets/images folder
*
* @param string $image The image path
* @param integer $width The target width
* @param integer $height The target height
* @param string $mode The resize mode
* @param string $target An optional target path
* @param boolean $force Override existing target images
*
* @return string|null The path of the resized image or null
*/
public static function get($image, $width, $height, $mode = '', $target = null, $force = false)
{
if ($image == '') {
return null;
}
$image = rawurldecode($image);
// Check whether the file exists
if (!is_file(TL_ROOT . '/' . $image)) {
\System::log('Image "' . $image . '" could not be found', __METHOD__, TL_ERROR);
return null;
}
$objFile = new \File($image, true);
$arrAllowedTypes = trimsplit(',', strtolower(\Config::get('validImageTypes')));
// Check the file type
if (!in_array($objFile->extension, $arrAllowedTypes)) {
\System::log('Image type "' . $objFile->extension . '" was not allowed to be processed', __METHOD__, TL_ERROR);
return null;
}
// No resizing required
if (($objFile->width == $width || !$width) && ($objFile->height == $height || !$height)) {
// Return the target image (thanks to Tristan Lins) (see #4166)
if ($target) {
// Copy the source image if the target image does not exist or is older than the source image
if (!file_exists(TL_ROOT . '/' . $target) || $objFile->mtime > filemtime(TL_ROOT . '/' . $target)) {
\Files::getInstance()->copy($image, $target);
}
return \System::urlEncode($target);
}
return \System::urlEncode($image);
}
// No mode given
if ($mode == '') {
// Backwards compatibility
if ($width && $height) {
$mode = 'center_top';
} else {
$mode = 'proportional';
}
}
// Backwards compatibility
if ($mode == 'crop') {
$mode = 'center_center';
}
$strCacheKey = substr(md5('-w' . $width . '-h' . $height . '-' . $image . '-' . $mode . '-' . $objFile->mtime), 0, 8);
$strCacheName = 'assets/images/' . substr($strCacheKey, -1) . '/' . $objFile->filename . '-' . $strCacheKey . '.' . $objFile->extension;
// Check whether the image exists already
if (!\Config::get('debugMode')) {
// Custom target (thanks to Tristan Lins) (see #4166)
if ($target && !$force) {
if (file_exists(TL_ROOT . '/' . $target) && $objFile->mtime <= filemtime(TL_ROOT . '/' . $target)) {
return \System::urlEncode($target);
}
}
// Regular cache file
if (file_exists(TL_ROOT . '/' . $strCacheName)) {
// Copy the cached file if it exists
if ($target) {
\Files::getInstance()->copy($strCacheName, $target);
return \System::urlEncode($target);
}
return \System::urlEncode($strCacheName);
}
}
// HOOK: add custom logic
if (isset($GLOBALS['TL_HOOKS']['getImage']) && is_array($GLOBALS['TL_HOOKS']['getImage'])) {
foreach ($GLOBALS['TL_HOOKS']['getImage'] as $callback) {
$return = \System::importStatic($callback[0])->{$callback}[1]($image, $width, $height, $mode, $strCacheName, $objFile, $target);
if (is_string($return)) {
return \System::urlEncode($return);
}
}
}
// Return the path to the original image if the GDlib cannot handle it
if (!extension_loaded('gd') || !$objFile->isGdImage || $objFile->width > \Config::get('gdMaxImgWidth') || $objFile->height > \Config::get('gdMaxImgHeight') || !$width && !$height || $width > \Config::get('gdMaxImgWidth') || $height > \Config::get('gdMaxImgHeight')) {
return \System::urlEncode($image);
}
$intPositionX = 0;
$intPositionY = 0;
$intWidth = $width;
$intHeight = $height;
// Mode-specific changes
if ($intWidth && $intHeight) {
switch ($mode) {
case 'proportional':
if ($objFile->width >= $objFile->height) {
unset($height, $intHeight);
} else {
unset($width, $intWidth);
}
break;
case 'box':
if (round($objFile->height * $width / $objFile->width) <= $intHeight) {
unset($height, $intHeight);
} else {
unset($width, $intWidth);
}
break;
}
}
$strNewImage = null;
$strSourceImage = null;
// Resize width and height and crop the image if necessary
if ($intWidth && $intHeight) {
if ($intWidth * $objFile->height != $intHeight * $objFile->width) {
$intWidth = max(round($objFile->width * $height / $objFile->height), 1);
$intPositionX = -intval(($intWidth - $width) / 2);
if ($intWidth < $width) {
$intWidth = $width;
$intHeight = max(round($objFile->height * $width / $objFile->width), 1);
$intPositionX = 0;
$intPositionY = -intval(($intHeight - $height) / 2);
}
}
// Advanced crop modes
switch ($mode) {
case 'left_top':
$intPositionX = 0;
$intPositionY = 0;
break;
case 'center_top':
$intPositionX = -intval(($intWidth - $width) / 2);
$intPositionY = 0;
break;
case 'right_top':
$intPositionX = -intval($intWidth - $width);
$intPositionY = 0;
break;
case 'left_center':
$intPositionX = 0;
$intPositionY = -intval(($intHeight - $height) / 2);
break;
case 'center_center':
$intPositionX = -intval(($intWidth - $width) / 2);
$intPositionY = -intval(($intHeight - $height) / 2);
break;
case 'right_center':
$intPositionX = -intval($intWidth - $width);
$intPositionY = -intval(($intHeight - $height) / 2);
break;
case 'left_bottom':
$intPositionX = 0;
$intPositionY = -intval($intHeight - $height);
break;
case 'center_bottom':
$intPositionX = -intval(($intWidth - $width) / 2);
$intPositionY = -intval($intHeight - $height);
break;
case 'right_bottom':
$intPositionX = -intval($intWidth - $width);
$intPositionY = -intval($intHeight - $height);
break;
}
$strNewImage = imagecreatetruecolor($width, $height);
} elseif ($intWidth) {
$intHeight = max(round($objFile->height * $width / $objFile->width), 1);
$strNewImage = imagecreatetruecolor($intWidth, $intHeight);
} elseif ($intHeight) {
$intWidth = max(round($objFile->width * $height / $objFile->height), 1);
$strNewImage = imagecreatetruecolor($intWidth, $intHeight);
}
$arrGdinfo = gd_info();
$strGdVersion = preg_replace('/[^0-9\\.]+/', '', $arrGdinfo['GD Version']);
switch ($objFile->extension) {
case 'gif':
if ($arrGdinfo['GIF Read Support']) {
$strSourceImage = imagecreatefromgif(TL_ROOT . '/' . $image);
$intTranspIndex = imagecolortransparent($strSourceImage);
// Handle transparency
if ($intTranspIndex >= 0 && $intTranspIndex < imagecolorstotal($strSourceImage)) {
$arrColor = imagecolorsforindex($strSourceImage, $intTranspIndex);
$intTranspIndex = imagecolorallocate($strNewImage, $arrColor['red'], $arrColor['green'], $arrColor['blue']);
imagefill($strNewImage, 0, 0, $intTranspIndex);
imagecolortransparent($strNewImage, $intTranspIndex);
}
}
break;
case 'jpg':
case 'jpeg':
if ($arrGdinfo['JPG Support'] || $arrGdinfo['JPEG Support']) {
$strSourceImage = imagecreatefromjpeg(TL_ROOT . '/' . $image);
}
break;
case 'png':
if ($arrGdinfo['PNG Support']) {
$strSourceImage = imagecreatefrompng(TL_ROOT . '/' . $image);
// Handle transparency (GDlib >= 2.0 required)
if (version_compare($strGdVersion, '2.0', '>=')) {
imagealphablending($strNewImage, false);
$intTranspIndex = imagecolorallocatealpha($strNewImage, 0, 0, 0, 127);
imagefill($strNewImage, 0, 0, $intTranspIndex);
imagesavealpha($strNewImage, true);
}
}
break;
}
// The new image could not be created
if (!$strSourceImage) {
imagedestroy($strNewImage);
\System::log('Image "' . $image . '" could not be processed', __METHOD__, TL_ERROR);
return null;
}
imageinterlace($strNewImage, 1);
// see #6529
imagecopyresampled($strNewImage, $strSourceImage, $intPositionX, $intPositionY, 0, 0, $intWidth, $intHeight, $objFile->width, $objFile->height);
// Fallback to PNG if GIF ist not supported
if ($objFile->extension == 'gif' && !$arrGdinfo['GIF Create Support']) {
$objFile->extension = 'png';
}
// Create the new image
switch ($objFile->extension) {
case 'gif':
imagegif($strNewImage, TL_ROOT . '/' . $strCacheName);
break;
case 'jpg':
case 'jpeg':
imagejpeg($strNewImage, TL_ROOT . '/' . $strCacheName, \Config::get('jpgQuality') ?: 80);
break;
case 'png':
// Optimize non-truecolor images (see #2426)
if (version_compare($strGdVersion, '2.0', '>=') && function_exists('imagecolormatch') && !imageistruecolor($strSourceImage)) {
// TODO: make it work with transparent images, too
if (imagecolortransparent($strSourceImage) == -1) {
$intColors = imagecolorstotal($strSourceImage);
// Convert to a palette image
// @see http://www.php.net/manual/de/function.imagetruecolortopalette.php#44803
if ($intColors > 0 && $intColors < 256) {
$wi = imagesx($strNewImage);
$he = imagesy($strNewImage);
$ch = imagecreatetruecolor($wi, $he);
imagecopymerge($ch, $strNewImage, 0, 0, 0, 0, $wi, $he, 100);
imagetruecolortopalette($strNewImage, false, $intColors);
imagecolormatch($ch, $strNewImage);
imagedestroy($ch);
}
}
}
imagepng($strNewImage, TL_ROOT . '/' . $strCacheName);
break;
}
// Destroy the temporary images
imagedestroy($strSourceImage);
imagedestroy($strNewImage);
// Resize the original image
if ($target) {
\Files::getInstance()->copy($strCacheName, $target);
return \System::urlEncode($target);
}
// Set the file permissions when the Safe Mode Hack is used
if (\Config::get('useFTP')) {
\Files::getInstance()->chmod($strCacheName, \Config::get('defaultFileChmod'));
}
// Return the path to new image
return \System::urlEncode($strCacheName);
}
/**
* Crop the image and return the file path
* @param string
* @param integer
* @param integer
* @return string
*/
protected function cropImage($strFile, $intPositionX, $intPositionY)
{
$strThumbnail = $this->getThumbnailPath($strFile);
list($intWidth, $intHeight) = $this->getThumbnailDimensions($strFile);
// Resize to thumbnail size first
\Image::resize($strFile, $intWidth, $intHeight, 'proportional');
$arrGdinfo = gd_info();
$strGdVersion = preg_replace('/[^0-9\\.]+/', '', $arrGdinfo['GD Version']);
$strNewImage = imagecreatetruecolor($this->arrAvatarSize[0], $this->arrAvatarSize[1]);
$strExtension = strtolower(pathinfo($strFile, PATHINFO_EXTENSION));
switch ($strExtension) {
case 'gif':
if ($arrGdinfo['GIF Read Support']) {
$strSourceImage = imagecreatefromgif(TL_ROOT . '/' . $strFile);
$intTranspIndex = imagecolortransparent($strSourceImage);
// Handle transparency
if ($intTranspIndex >= 0 && $intTranspIndex < imagecolorstotal($strSourceImage)) {
$arrColor = imagecolorsforindex($strSourceImage, $intTranspIndex);
$intTranspIndex = imagecolorallocate($strNewImage, $arrColor['red'], $arrColor['green'], $arrColor['blue']);
imagefill($strNewImage, 0, 0, $intTranspIndex);
imagecolortransparent($strNewImage, $intTranspIndex);
}
}
break;
case 'jpg':
case 'jpeg':
if ($arrGdinfo['JPG Support'] || $arrGdinfo['JPEG Support']) {
$strSourceImage = imagecreatefromjpeg(TL_ROOT . '/' . $strFile);
}
break;
case 'png':
if ($arrGdinfo['PNG Support']) {
$strSourceImage = imagecreatefrompng(TL_ROOT . '/' . $strFile);
// Handle transparency (GDlib >= 2.0 required)
if (version_compare($strGdVersion, '2.0', '>=')) {
imagealphablending($strNewImage, false);
$intTranspIndex = imagecolorallocatealpha($strNewImage, 0, 0, 0, 127);
imagefill($strNewImage, 0, 0, $intTranspIndex);
imagesavealpha($strNewImage, true);
}
}
break;
}
// The new image could not be created
if (!$strSourceImage) {
imagedestroy($strNewImage);
\System::log('Image "' . $strFile . '" could not be processed', __METHOD__, TL_ERROR);
return null;
}
imagecopyresampled($strNewImage, $strSourceImage, 0, 0, intval($intPositionX), intval($intPositionY), $this->arrAvatarSize[0], $this->arrAvatarSize[1], $this->arrAvatarSize[0], $this->arrAvatarSize[1]);
// Create the new image
switch ($strExtension) {
case 'gif':
imagegif($strNewImage, TL_ROOT . '/' . $strThumbnail);
break;
case 'jpg':
case 'jpeg':
imagejpeg($strNewImage, TL_ROOT . '/' . $strThumbnail, !$GLOBALS['TL_CONFIG']['jpgQuality'] ? 80 : $GLOBALS['TL_CONFIG']['jpgQuality']);
break;
case 'png':
// Optimize non-truecolor images (see #2426)
if (version_compare($strGdVersion, '2.0', '>=') && function_exists('imagecolormatch') && !imageistruecolor($strSourceImage)) {
// TODO: make it work with transparent images, too
if (imagecolortransparent($strSourceImage) == -1) {
$intColors = imagecolorstotal($strSourceImage);
// Convert to a palette image
// @see http://www.php.net/manual/de/function.imagetruecolortopalette.php#44803
if ($intColors > 0 && $intColors < 256) {
$wi = imagesx($strNewImage);
$he = imagesy($strNewImage);
$ch = imagecreatetruecolor($wi, $he);
imagecopymerge($ch, $strNewImage, 0, 0, 0, 0, $wi, $he, 100);
imagetruecolortopalette($strNewImage, false, $intColors);
imagecolormatch($ch, $strNewImage);
imagedestroy($ch);
}
}
}
imagepng($strNewImage, TL_ROOT . '/' . $strThumbnail);
break;
}
// Destroy the temporary images
imagedestroy($strSourceImage);
imagedestroy($strNewImage);
return $strThumbnail;
}
public function trueColorToPalette()
{
$img = imagecreatetruecolor($this->width, $this->height);
$bga = imagecolorallocatealpha($img, 0, 0, 0, 127);
imagecolortransparent($img, $bga);
imagefill($img, 0, 0, $bga);
imagecopy($img, $this->image, 0, 0, 0, 0, $this->width, $this->height);
imagetruecolortopalette($img, false, 255);
imagesavealpha($img, true);
if (imageistruecolor($this->image)) {
$this->log("Matching colors with true color image.");
imagecolormatch($this->image, $img);
}
$this->image = $img;
}
private function _getFilePath($file = null)
{
// If this is not an image just return path in Database
if ($file['is_image'] != 1) {
return $file['server_path'];
}
$file_path = $file['server_path'];
$_get = !empty($_GET) ? $_GET : array();
$this->_setFileProps($file);
if (count($_get)) {
$file_path_params = '';
$request_w = $this->input->get('w');
// Width
$request_h = $this->input->get('h');
// Height
$request_m = $this->input->get('m');
// Mode
$request_p = $this->input->get('p');
// Preview (black/white, 8 bit)
$request_bw = $this->input->get('bw');
// Grayscale
$request_c = $this->input->get('c');
// Crop
$request_s = $this->input->get('s');
// Sharpen
if ($request_w && !empty($this->MODULE_CONF['max_width']) && $request_w > $this->MODULE_CONF['max_width']) {
show_error('Invalid request. Resize width above allowed size.');
}
if ($request_h && !empty($this->MODULE_CONF['max_height']) && $request_h > $this->MODULE_CONF['max_height']) {
show_error('Invalid request. Resize height above allowed size.');
}
if ($request_w) {
$file_path_params .= '_w' . $request_w;
}
if ($request_h) {
$file_path_params .= '_h' . $request_h;
}
if ($request_m) {
$file_path_params .= '_m' . $request_m;
}
if ($request_p) {
$file_path_params .= '_p' . $request_p;
}
if ($request_c) {
$file_path_params .= '_c' . $request_c;
}
if ($request_s) {
$file_path_params .= '_s' . $request_s;
}
if ($request_bw) {
$file_path_params .= '_bw';
}
$new_file_path = $file['base_path'] . $file_path_params . $file['ext'];
// Does the file exist and make sure the original has not been updated since
if ($this->show_cached && file_exists($new_file_path) && filemtime($new_file_path) > filemtime($file_path)) {
// Loading existing file from disk
return $new_file_path;
} else {
// Create a new file
if (!is_writable(dirname($new_file_path))) {
exit('ERROR: Can not write to path: ' . $new_file_path);
}
// Create image resource
switch ($this->image_type) {
case 1:
$src_img = imagecreatefromgif($file_path);
break;
case 2:
$src_img = imagecreatefromjpeg($file_path);
break;
case 3:
$src_img = imagecreatefrompng($file_path);
break;
default:
show_error('Invalid image type. (' . $file['mime'] . ')');
break;
}
$crop = false;
$mode = $this->input->get('m');
$output_w = $this->input->get('w');
$output_h = $this->input->get('h');
$scale_w = $output_w;
$scale_h = $output_h;
$file_w = $file['options']['image_width'];
$file_h = $file['options']['image_height'];
if ($output_w && $output_h) {
if ($mode == 'p') {
// p = Fit to size, padded
$color = 'ff00ff';
$color = $this->_rgb2array($color);
$scale = min($output_w / $file_w, $output_h / $file_h);
$crop_w = floor($scale * $file_w);
$crop_h = floor($scale * $file_h);
$crop_x = $file_w - $scale * $output_w;
$crop_y = $file_h - $scale * $output_h;
$crop = ImageCreateTrueColor($output_w, $output_h);
$fill = ImageColorAllocate($crop, $color[0], $color[1], $color[2]);
ImageFill($crop, 0, 0, $fill);
ImageCopy($crop, $src_img, 0, 0, $crop_x / 2, $crop_y / 2, $crop_w, $crop_h);
header('Content-Type: image/jpeg');
imagejpeg($crop, NULL, $this->jpg_quality);
exit;
/*
pr($scale, 'scale');
pr($crop_x, 'crop_x');
pr($crop_y, 'crop_y');
pr($crop_w, 'crop_w');
pr($crop_h, 'crop_h');
// crop the middle part of the image to fit proportions
ImageCopy($crop, $src_img, 0, 0, ($crop_x/2), ($crop_y/2), $crop_w, $crop_h);
exit();
*/
} else {
if ($mode == 'e') {
// e = Exact Fit / Crop
$scale = min($file_w / $output_w, $file_h / $output_h);
$crop_x = $file_w - $scale * $output_w;
$crop_y = $file_h - $scale * $output_h;
$crop_w = $file_w - $crop_x;
$crop_h = $file_h - $crop_y;
$crop = ImageCreateTrueColor($crop_w, $crop_h);
if ($request_c == 't') {
// crop the top center part of the image to fit proportions
ImageCopy($crop, $src_img, 0, 0, 0, $crop_y / 2, $crop_w, $crop_h);
} else {
if ($request_c == 'tl') {
// crop the top left part of the image to fit proportions
ImageCopy($crop, $src_img, 0, 0, 0, 0, $crop_w, $crop_h);
} else {
// crop the middle part of the image to fit proportions
ImageCopy($crop, $src_img, 0, 0, $crop_x / 2, $crop_y / 2, $crop_w, $crop_h);
}
}
} else {
// w = Fit within
$scale = min($output_w / $file_w, $output_h / $file_h);
$output_w = floor($scale * $file_w);
$output_h = floor($scale * $file_h);
}
}
} else {
if ($output_h) {
$output_w = $output_h * 100 / $file_h * $file_w / 100;
} else {
if ($output_w) {
$output_h = $output_w * 100 / $file_w * $file_h / 100;
}
}
}
// Make scaled image
$dest_img = ImageCreateTrueColor($output_w, $output_h);
if ($crop) {
// Create new image from cropped source
ImageCopyResampled($dest_img, $crop, 0, 0, 0, 0, $output_w, $output_h, $crop_w, $crop_h);
ImageDestroy($crop);
} else {
// Create new image from original source
ImageCopyResampled($dest_img, $src_img, 0, 0, 0, 0, $output_w, $output_h, $file_w, $file_h);
}
// Adjust image quality
if ($request_bw) {
// Greyscale and adjust contrast
imagefilter($dest_img, IMG_FILTER_CONTRAST, 5);
imagefilter($dest_img, IMG_FILTER_GRAYSCALE);
$dest_copy = imagecreatetruecolor($output_w, $output_h);
imagecopy($dest_copy, $dest_img, 0, 0, 0, 0, $output_w, $output_h);
imagetruecolortopalette($dest_img, $dither, $colors);
imagecolormatch($dest_copy, $dest_img);
imagedestroy($dest_copy);
}
// Adjust image quality
if ($request_p) {
// Force serving as GIF
$this->image_type = 1;
// Greyscale and adjust contrast
imagefilter($dest_img, IMG_FILTER_CONTRAST, -30);
imagefilter($dest_img, IMG_FILTER_GRAYSCALE);
// Reduce color palette
// http://www.php.net/manual/en/function.imagetruecolortopalette.php
// zmorris at zsculpt dot com (17-Aug-2004 06:58)
$colors = 5;
$colors = max(min($colors, 256), 2);
$dither = TRUE;
$dest_copy = imagecreatetruecolor($output_w, $output_h);
imagecopy($dest_copy, $dest_img, 0, 0, 0, 0, $output_w, $output_h);
imagetruecolortopalette($dest_img, $dither, $colors);
imagecolormatch($dest_copy, $dest_img);
imagedestroy($dest_copy);
}
// Sharpen Image
if ($request_s) {
$matrix = array(array(-1.2, -1, -1.2), array(-1, $request_s, -1), array(-1.2, -1, -1.2));
$divisor = array_sum(array_map('array_sum', $matrix));
$offset = 0;
imageconvolution($dest_img, $matrix, $divisor, $offset);
}
switch ($this->image_type) {
case 1:
imagegif($dest_img, $new_file_path);
break;
case 2:
imagejpeg($dest_img, $new_file_path, $this->jpg_quality);
break;
case 3:
imagepng($dest_img, $new_file_path);
break;
default:
break;
}
ImageDestroy($dest_img);
ImageDestroy($src_img);
}
// Return the newly created file path
return $new_file_path;
}
return $file_path;
}
function ImageTrueColorToPalette2($image, $dither, $ncolors)
{
$width = imagesx($image);
$height = imagesy($image);
$colors_handle = ImageCreateTrueColor($width, $height);
@imagecopymerge($colors_handle, $image, 0, 0, 0, 0, $width, $height, 100);
@imagetruecolortopalette($image, $dither, $ncolors);
if (function_exists('imagecolormatch')) {
@imagecolormatch($colors_handle, $image);
}
//@imagedestroy($colors_handle);
return $image;
}
private function _getFilePath($file = null)
{
// If this is not an image just return path in Database
if ($file['is_image'] != 1) {
return $file['server_path'];
}
$file_path = $file['server_path'];
$this->_setFileProps($file);
if ($this->input->get('w') || $this->input->get('h')) {
$file_path_params = '';
$request_w = $this->input->get('w');
$request_h = $this->input->get('h');
$request_m = $this->input->get('m');
$request_p = $this->input->get('p');
if ($request_w && !empty($this->MODULE_CONF['max_width']) && $request_w > $this->MODULE_CONF['max_width']) {
show_error('Invalid request. Resize width above allowed size.');
}
if ($request_h && !empty($this->MODULE_CONF['max_height']) && $request_h > $this->MODULE_CONF['max_height']) {
show_error('Invalid request. Resize height above allowed size.');
}
if ($request_w) {
$file_path_params .= '_w' . $request_w;
}
if ($request_h) {
$file_path_params .= '_h' . $request_h;
}
if ($request_m) {
$file_path_params .= '_m' . $request_m;
}
if ($request_p) {
$file_path_params .= '_p' . $request_p;
}
$quality = 90;
$new_file_path = $file['base_path'] . $file_path_params . $file['ext'];
// Does the file exist and make sure the original has not been updated since
if (file_exists($new_file_path) && filemtime($new_file_path) > filemtime($file_path)) {
// Loading existing file from disk
log_message('debug', 'Loading file from disk (' . $new_file_path . ')');
return $new_file_path;
} else {
// Create a new file
log_message('debug', 'Crating new file (' . $new_file_path . ')');
if (!is_writable(dirname($new_file_path))) {
log_message('debug', 'Can not write to path: ' . $new_file_path);
exit('ERROR: Can not write to path: ' . $new_file_path);
}
// Create image resource
switch ($this->image_type) {
case 1:
$src_img = imagecreatefromgif($file_path);
break;
case 2:
$src_img = imagecreatefromjpeg($file_path);
break;
case 3:
$src_img = imagecreatefrompng($file_path);
break;
default:
show_error('Invalid image type. (' . $file['mime'] . ')');
break;
}
$props = $this->_getResizeProps($file);
$dest_img = imagecreatetruecolor($props['w'], $props['h']);
// Resize image
if ($this->input->get('w') || $this->input->get('h')) {
imagecopyresampled($dest_img, $src_img, 0, 0, $props['x'], $props['y'], $props['w'], $props['h'], $this->image_w, $this->image_h);
}
// Adjust image quality
if ($request_p) {
// Force serving as GIF
$this->image_type = 1;
// Greyscale
imagefilter($dest_img, IMG_FILTER_CONTRAST, -30);
imagefilter($dest_img, IMG_FILTER_GRAYSCALE);
// Reduce color palette
// http://www.php.net/manual/en/function.imagetruecolortopalette.php
// zmorris at zsculpt dot com (17-Aug-2004 06:58)
$colors = 5;
$colors = max(min($colors, 256), 2);
$dither = TRUE;
$dest_copy = imagecreatetruecolor($props['w'], $props['h']);
imagecopy($dest_copy, $dest_img, 0, 0, 0, 0, $props['w'], $props['h']);
imagetruecolortopalette($dest_img, $dither, $colors);
imagecolormatch($dest_copy, $dest_img);
imagedestroy($dest_copy);
}
switch ($this->image_type) {
case 1:
imagegif($dest_img, $new_file_path);
break;
case 2:
imagejpeg($dest_img, $new_file_path, $quality);
break;
case 3:
imagepng($dest_img, $new_file_path);
break;
default:
break;
}
imagedestroy($dest_img);
imagedestroy($src_img);
// TODO: chmod
}
// Return the newly created file path
return $new_file_path;
}
return $file_path;
}
