<?php
+/**
+ * @file
+ * @ingroup Media
+ */
/**
- * @addtogroup Media
+ * @ingroup Media
*/
class BitmapHandler extends ImageHandler {
function normaliseParams( $image, &$params ) {
# Don't make an image bigger than the source
$params['physicalWidth'] = $params['width'];
$params['physicalHeight'] = $params['height'];
-
+
if ( $params['physicalWidth'] >= $srcWidth ) {
$params['physicalWidth'] = $srcWidth;
$params['physicalHeight'] = $srcHeight;
return true;
}
-
+
function doTransform( $image, $dstPath, $dstUrl, $params, $flags = 0 ) {
- global $wgUseImageMagick, $wgImageMagickConvertCommand;
+ global $wgUseImageMagick, $wgImageMagickConvertCommand, $wgImageMagickTempDir;
global $wgCustomConvertCommand;
global $wgSharpenParameter, $wgSharpenReductionThreshold;
+ global $wgMaxAnimatedGifArea;
if ( !$this->normaliseParams( $image, $params ) ) {
return new TransformParameterError( $params );
$retval = 0;
wfDebug( __METHOD__.": creating {$physicalWidth}x{$physicalHeight} thumbnail at $dstPath\n" );
- if ( $physicalWidth == $srcWidth && $physicalHeight == $srcHeight ) {
+ if ( !$image->mustRender() && $physicalWidth == $srcWidth && $physicalHeight == $srcHeight ) {
# normaliseParams (or the user) wants us to return the unscaled image
wfDebug( __METHOD__.": returning unscaled image\n" );
return new ThumbnailImage( $image, $image->getURL(), $clientWidth, $clientHeight, $srcPath );
} else {
$scaler = 'client';
}
+ wfDebug( __METHOD__.": scaler $scaler\n" );
if ( $scaler == 'client' ) {
# Client-side image scaling, use the source URL
}
if ( $flags & self::TRANSFORM_LATER ) {
+ wfDebug( __METHOD__.": Transforming later per flags.\n" );
return new ThumbnailImage( $image, $dstUrl, $clientWidth, $clientHeight, $dstPath );
}
if ( !wfMkdirParents( dirname( $dstPath ) ) ) {
- return new MediaTransformError( 'thumbnail_error', $clientWidth, $clientHeight,
- wfMsg( 'thumbnail_dest_directory' ) );
+ wfDebug( __METHOD__.": Unable to create thumbnail destination directory, falling back to client scaling\n" );
+ return new ThumbnailImage( $image, $image->getURL(), $clientWidth, $clientHeight, $srcPath );
}
if ( $scaler == 'im' ) {
# use ImageMagick
+ $quality = '';
$sharpen = '';
+ $frame = '';
+ $animation = '';
if ( $mimeType == 'image/jpeg' ) {
$quality = "-quality 80"; // 80%
# Sharpening, see bug 6193
}
} elseif ( $mimeType == 'image/png' ) {
$quality = "-quality 95"; // zlib 9, adaptive filtering
+ } elseif( $mimeType == 'image/gif' ) {
+ if( $srcWidth * $srcHeight > $wgMaxAnimatedGifArea ) {
+ // Extract initial frame only; we're so big it'll
+ // be a total drag. :P
+ $frame = '[0]';
+ } else {
+ // Coalesce is needed to scale animated GIFs properly (bug 1017).
+ $animation = ' -coalesce ';
+ }
+ }
+
+ if ( strval( $wgImageMagickTempDir ) !== '' ) {
+ $tempEnv = 'MAGICK_TMPDIR=' . wfEscapeShellArg( $wgImageMagickTempDir ) . ' ';
} else {
- $quality = ''; // default
+ $tempEnv = '';
}
# Specify white background color, will be used for transparent images
# It seems that ImageMagick has a bug wherein it produces thumbnails of
# the wrong size in the second case.
- $cmd = wfEscapeShellArg($wgImageMagickConvertCommand) .
+ $cmd =
+ $tempEnv .
+ wfEscapeShellArg($wgImageMagickConvertCommand) .
" {$quality} -background white -size {$physicalWidth} ".
- wfEscapeShellArg($srcPath) .
- // Coalesce is needed to scale animated GIFs properly (bug 1017).
- ' -coalesce ' .
+ wfEscapeShellArg($srcPath . $frame) .
+ $animation .
// For the -resize option a "!" is needed to force exact size,
// or ImageMagick may decide your ratio is wrong and slice off
// a pixel.
$src_image = call_user_func( $loader, $srcPath );
$dst_image = imagecreatetruecolor( $physicalWidth, $physicalHeight );
-
+
// Initialise the destination image to transparent instead of
// the default solid black, to support PNG and GIF transparency nicely
$background = imagecolorallocate( $dst_image, 0, 0, 0 );
imagecolortransparent( $dst_image, $background );
- imagealphablending( $dst_image, false );
+ imagealphablending( $dst_image, false );
if( $colorStyle == 'palette' ) {
// Don't resample for paletted GIF images.
}
imagesavealpha( $dst_image, true );
-
+
call_user_func( $saveType, $dst_image, $dstPath );
imagedestroy( $dst_image );
imagedestroy( $src_image );
return $result;
}
}
-
-