TYPO3 Core

The GIFBUILDER cObject does not have the ability to render PNGs with an alpha channel - 32-bit PNGs. This is my proposal to enable this:

• Introduce the "backColor" value "transparent". If this is set, the created blank image is not filled with a default or given color, but with a fully transparent background. All other properties are mapped on to of that.
• The "[GFX][png_truecolor]" must be set to true for this. Setting "mapReduce" and / or "format" to "jpg" or "gif", disables this behaviour. In both cases the default white background is used.
• If "backColor" is used with another value, the new property has no effect.
• If "transparent" is set as "backColor", the GIFBUILDER properties "transparentBackground" and "transparentColor" have no effect.

I'm currently working on a patch for this.