/**
* Create a thumbnail of the image having the specified width.
* The thumbnail will not be created if the width is larger than the
* image's width. Let the browser do the scaling in this case.
* The thumbnail is stored on disk and is only computed if the thumbnail
* file does not exist OR if it is older than the image.
* Returns an object which can return the pathname, URL, and physical
* pixel size of the thumbnail -- or null on failure.
*
* @return ThumbnailImage or null on failure
* @private
*/
function renderThumb($width, $useScript = true, $makeMapIcon = false)
{
// WERELATE: makeMapIcon
global $wgUseSquid, $wgThumbnailEpoch;
wfProfileIn(__METHOD__);
$this->load();
$height = -1;
if (!$this->validateThumbParams($width, $height)) {
# Validation error
wfProfileOut(__METHOD__);
return null;
}
// WERELATE: makeMapIcon
if (!$this->mustRender() && $width == $this->width && $height == $this->height && !$makeMapIcon) {
# validateThumbParams (or the user) wants us to return the unscaled image
$thumb = new ThumbnailImage($this->getURL(), $width, $height);
wfProfileOut(__METHOD__);
return $thumb;
}
// WERELATE: makeMapIcon
list($isScriptUrl, $url) = $this->thumbUrl($width, 'thumb', $makeMapIcon);
if ($isScriptUrl && $useScript) {
// Use thumb.php to render the image
$thumb = new ThumbnailImage($url, $width, $height);
wfProfileOut(__METHOD__);
return $thumb;
}
// WERELATE: makeMapIcon
$thumbName = $this->thumbName($width, $makeMapIcon);
$thumbDir = wfImageThumbDir($this->name, $this->fromSharedDirectory);
$thumbPath = $thumbDir . '/' . $thumbName;
if (is_dir($thumbPath)) {
// Directory where file should be
// This happened occasionally due to broken migration code in 1.5
// Rename to broken-*
global $wgUploadDirectory;
for ($i = 0; $i < 100; $i++) {
$broken = "{$wgUploadDirectory}/broken-{$i}-{$thumbName}";
if (!file_exists($broken)) {
rename($thumbPath, $broken);
break;
}
}
// Code below will ask if it exists, and the answer is now no
clearstatcache();
}
$done = true;
if (!file_exists($thumbPath) || filemtime($thumbPath) < wfTimestamp(TS_UNIX, $wgThumbnailEpoch)) {
// Create the directory if it doesn't exist
if (is_file($thumbDir)) {
// File where thumb directory should be, destroy if possible
@unlink($thumbDir);
}
wfMkdirParents($thumbDir);
$oldThumbPath = wfDeprecatedThumbDir($thumbName, 'thumb', $this->fromSharedDirectory) . '/' . $thumbName;
$done = false;
// Migration from old directory structure
if (is_file($oldThumbPath)) {
if (filemtime($oldThumbPath) >= filemtime($this->imagePath)) {
if (file_exists($thumbPath)) {
if (!is_dir($thumbPath)) {
// Old image in the way of rename
unlink($thumbPath);
} else {
// This should have been dealt with already
throw new MWException("Directory where image should be: {$thumbPath}");
}
}
// Rename the old image into the new location
rename($oldThumbPath, $thumbPath);
$done = true;
} else {
unlink($oldThumbPath);
}
}
if (!$done) {
// WERELATE: makeMapIcon
$this->lastError = $this->reallyRenderThumb($thumbPath, $width, $height, $makeMapIcon);
if ($this->lastError === true) {
$done = true;
} elseif ($GLOBALS['wgIgnoreImageErrors']) {
// Log the error but output anyway.
// With luck it's a transitory error...
$done = true;
}
# Purge squid
# This has to be done after the image is updated and present for all machines on NFS,
# or else the old version might be stored into the squid again
if ($wgUseSquid) {
$urlArr = array($url);
wfPurgeSquidServers($urlArr);
}
}
}
if ($done) {
$thumb = new ThumbnailImage($url, $width, $height, $thumbPath);
} else {
$thumb = null;
}
wfProfileOut(__METHOD__);
return $thumb;
}
/**
* Create a thumbnail of the image having the specified width.
* The thumbnail will not be created if the width is larger than the
* image's width. Let the browser do the scaling in this case.
* The thumbnail is stored on disk and is only computed if the thumbnail
* file does not exist OR if it is older than the image.
* Returns an object which can return the pathname, URL, and physical
* pixel size of the thumbnail -- or null on failure.
*
* @return ThumbnailImage
* @access private
*/
function renderThumb($width, $useScript = true)
{
global $wgUseSquid, $wgInternalServer;
global $wgThumbnailScriptPath, $wgSharedThumbnailScriptPath;
$fname = 'Image::renderThumb';
wfProfileIn($fname);
$width = IntVal($width);
$this->load();
if (!$this->exists()) {
# If there is no image, there will be no thumbnail
wfProfileOut($fname);
return null;
}
# Sanity check $width
if ($width <= 0 || $this->width <= 0) {
# BZZZT
wfProfileOut($fname);
return null;
}
global $wgSVGMaxSize;
$maxsize = $this->mustRender() ? max($this->width, $wgSVGMaxSize) : $this->width - 1;
if ($width > $maxsize) {
# Don't make an image bigger than the source
$thumb = new ThumbnailImage($this->getViewURL(), $this->getWidth(), $this->getHeight());
wfProfileOut($fname);
return $thumb;
}
$height = floor($this->height * ($width / $this->width));
list($isScriptUrl, $url) = $this->thumbUrl($width);
if ($isScriptUrl && $useScript) {
// Use thumb.php to render the image
$thumb = new ThumbnailImage($url, $width, $height);
wfProfileOut($fname);
return $thumb;
}
$thumbName = $this->thumbName($width, $this->fromSharedDirectory);
$thumbPath = wfImageThumbDir($this->name, $this->fromSharedDirectory) . '/' . $thumbName;
if (is_dir($thumbPath)) {
// Directory where file should be
// This happened occasionally due to broken migration code in 1.5
// Rename to broken-*
global $wgUploadDirectory;
for ($i = 0; $i < 100; $i++) {
$broken = "{$wgUploadDirectory}/broken-{$i}-{$thumbName}";
if (!file_exists($broken)) {
rename($thumbPath, $broken);
break;
}
}
// Code below will ask if it exists, and the answer is now no
clearstatcache();
}
if (!file_exists($thumbPath)) {
$oldThumbPath = wfDeprecatedThumbDir($thumbName, 'thumb', $this->fromSharedDirectory) . '/' . $thumbName;
$done = false;
// Migration from old directory structure
if (is_file($oldThumbPath)) {
if (filemtime($oldThumbPath) >= filemtime($this->imagePath)) {
if (file_exists($thumbPath)) {
if (!is_dir($thumbPath)) {
// Old image in the way of rename
unlink($thumbPath);
} else {
// This should have been dealt with already
wfDebugDieBacktrace("Directory where image should be: {$thumbPath}");
}
}
// Rename the old image into the new location
rename($oldThumbPath, $thumbPath);
$done = true;
} else {
unlink($oldThumbPath);
}
}
if (!$done) {
$this->reallyRenderThumb($thumbPath, $width, $height);
# Purge squid
# This has to be done after the image is updated and present for all machines on NFS,
# or else the old version might be stored into the squid again
if ($wgUseSquid) {
if (substr($url, 0, 4) == 'http') {
$urlArr = array($url);
} else {
$urlArr = array($wgInternalServer . $url);
}
wfPurgeSquidServers($urlArr);
}
}
}
$thumb = new ThumbnailImage($url, $width, $height, $thumbPath);
wfProfileOut($fname);
return $thumb;
}
/**
* Create a thumbnail of the image having the specified width.
* The thumbnail will not be created if the width is larger than the
* image's width. Let the browser do the scaling in this case.
* The thumbnail is stored on disk and is only computed if the thumbnail
* file does not exist OR if it is older than the image.
* Returns an object which can return the pathname, URL, and physical
* pixel size of the thumbnail -- or null on failure.
*
* @return ThumbnailImage
* @access private
*/
function renderThumb($width, $useScript = true)
{
global $wgUseSquid, $wgInternalServer;
global $wgThumbnailScriptPath, $wgSharedThumbnailScriptPath;
$fname = 'Image::renderThumb';
wfProfileIn($fname);
$width = IntVal($width);
$this->load();
if (!$this->exists()) {
# If there is no image, there will be no thumbnail
wfProfileOut($fname);
return null;
}
# Sanity check $width
if ($width <= 0 || $this->width <= 0) {
# BZZZT
wfProfileOut($fname);
return null;
}
if ($width >= $this->width && !$this->mustRender()) {
# Don't make an image bigger than the source
$thumb = new ThumbnailImage($this->getViewURL(), $this->getWidth(), $this->getHeight());
wfProfileOut($fname);
return $thumb;
}
$height = floor($this->height * ($width / $this->width));
list($isScriptUrl, $url) = $this->thumbUrl($width);
if ($isScriptUrl && $useScript) {
// Use thumb.php to render the image
$thumb = new ThumbnailImage($url, $width, $height);
wfProfileOut($fname);
return $thumb;
}
$thumbName = $this->thumbName($width, $this->fromSharedDirectory);
$thumbPath = wfImageThumbDir($this->name, $this->fromSharedDirectory) . '/' . $thumbName;
if (!file_exists($thumbPath)) {
$oldThumbPath = wfDeprecatedThumbDir($thumbName, 'thumb', $this->fromSharedDirectory) . '/' . $thumbName;
$done = false;
if (file_exists($oldThumbPath)) {
if (filemtime($oldThumbPath) >= filemtime($this->imagePath)) {
rename($oldThumbPath, $thumbPath);
$done = true;
} else {
unlink($oldThumbPath);
}
}
if (!$done) {
$this->reallyRenderThumb($thumbPath, $width, $height);
# Purge squid
# This has to be done after the image is updated and present for all machines on NFS,
# or else the old version might be stored into the squid again
if ($wgUseSquid) {
if (substr($url, 0, 4) == 'http') {
$urlArr = array($url);
} else {
$urlArr = array($wgInternalServer . $url);
}
wfPurgeSquidServers($urlArr);
}
}
}
$thumb = new ThumbnailImage($url, $width, $height, $thumbPath);
wfProfileOut($fname);
return $thumb;
}
