function addWatermark($srcPath, $dstPath, $width, $height)
{
global $IP, $wgImageMagickConvertCommand, $wgImageMagickCompositeCommand;
// do not add a watermark if the image is too small
if (WatermarkSupport::validImageSize($width, $height) == false) {
return;
}
$wm = $IP . '/skins/WikiHow/images/watermark.svg';
$watermarkWidth = 1074.447;
$targetWidth = $width / 8;
$density = 72 * $targetWidth / $watermarkWidth;
// we have a lower limit on density so the watermark is readable
if ($density < 4.0) {
$density = 4.0;
}
$cmd = "";
// make sure image is rgb format so the watermark applies correctly
if (WatermarkSupport::isCMYK($srcPath)) {
$cmd = wfEscapeShellArg($wgImageMagickConvertCommand) . " " . wfEscapeShellArg($srcPath) . " " . "-colorspace RGB " . wfEscapeShellArg($dstPath) . ";";
$srcPath = $dstPath;
}
$cmd = $cmd . wfEscapeShellArg($wgImageMagickConvertCommand) . " -density {$density} -background none " . wfEscapeShellArg($wm) . " miff:- | " . wfEscapeShellArg($wgImageMagickCompositeCommand) . " -gravity southeast -quality 100 -geometry +8+10 - " . wfEscapeShellArg($srcPath) . " " . wfEscapeShellArg($dstPath) . " 2>&1";
$beforeExists = file_exists($dstPath);
wfDebug(__METHOD__ . ": running ImageMagick: {$cmd}\n");
$err = wfShellExec($cmd, $retval);
$afterExists = file_exists($dstPath);
$currentDate = `date`;
wfErrorLog(trim($currentDate) . " {$cmd} b:" . ($beforeExists ? 't' : 'f') . " a:" . ($afterExists ? 't' : 'f') . "\n", '/tmp/watermark.log');
wfProfileOut('watermark');
}
static function onImageConvertNoScale($image, $params)
{
// edge case...if the image will not actually get watermarked because it's too small, just return true
if (WatermarkSupport::validImageSize($params['physicalWidth'], $params['physicalHeight']) == false) {
return true;
}
// return false here..we want to create the watermarked file!
// AG - TODO trying to figure out why we check if the file exists here..doesn't
// seem necessary or should be inverted
if (isset($params[WatermarkSupport::ADD_WATERMARK]) && $params[WatermarkSupport::ADD_WATERMARK] || $image->getRepo()->fileExists($params['dstPath'])) {
return false;
}
return true;
}
function wfImageConvertNoScale($dstPath, $params)
{
// edge case...if the image will not actually get watermarked because it's too small, just return true
if (WatermarkSupport::validImageSize($params['physicalWidth'], $params['physicalHeight']) == false) {
return true;
}
// return false here..we want to create the watemarked file!
if ($params[WatermarkSupport::ADD_WATERMARK] || file_exists($dstPath)) {
return false;
}
return true;
}
