[TYPO3-english] GifBuilder call w. FAL Assets

[Thomas Skierlo]

I'm currently writing a hook for css_styled_content image rendering. The hook renders everything in Twitter Bootstrap 3 styles, and it is working as expected for the standard case, images with or without a width specified. To get it working for images with equalHeight setting too, I need to read width and height settings from the original images.

The original part from CssStyledContent\Controller looks like:

		if ($equalHeight) {
			// Initiate gifbuilder object in order to get dimensions AND calculate the imageWidth's
			$gifCreator = GeneralUtility::makeInstance('TYPO3\\CMS\\Frontend\\Imaging\\GifBuilder');
			$gifCreator->init();
			$relations_cols = array();
			// contains the individual width of all images after scaling to $equalHeight
			$imgWidths = array();
			for ($a = 0; $a < $imgCount; $a++) {
				$imgKey = $a + $imgStart;
				$imgInfo = $gifCreator->getImageDimensions($imgPath . $imgs[$imgKey]);
				// relationship between the original height and the wished height
				$rel = $imgInfo[1] / $equalHeight;
				// if relations is zero, then the addition of this value is omitted as the image is not expected to display because of some error.
				if ($rel) {
					$imgWidths[$a] = $imgInfo[0] / $rel;
					// counts the total width of the row with the new height taken into consideration.
					$relations_cols[(int)floor($a / $colCount)] += $imgWidths[$a];
				}
			}
		}

AND - this part is NOT working. Try to debug $rel or $imgInfo. It's always empty. The reason seams obvious. For a FAL image the $imgInfo call translates to something like "uploads/pics/915".

The propper way to check the pass seems to be:

			if (\TYPO3\CMS\Core\Utility\MathUtility::canBeInterpretedAsInteger($imgs[$imgKey])) {
				$totalImagePath = intval($imgs[$imgKey]);
			} else {
				$totalImagePath = $imgPath . $imgs[$imgKey];
			}

But this is not working for the gifBuilder part.

What is the current propper way to read image dimensions from a given FAL image?

Thanks for any help,

Thomas