Image_Canvas: How to correct font-size with bc-breakage in mind

Hi, it turns out that during creation of the Image_Canvas-package one thing was overlooked: Since GD2 (which I suspect most people use nowadays) the TTF-functions use a font-size with points instead of pixels. And yes, that makes quite some difference :-) In the API (phpdoc) it's documented that the font-size is given in pixels. So actually according to the API-doc a correction-factor is needed for TTF-functions for everything using Image_Canvas with GD2. However on the other hand one might possibly assume that quite a number of people used it with GD as their canvas-type. So the other way of "getting it right" might also be to correct the API-docs to say "points" instead of "pixels" and fix the other output-drivers (e.g. SVG). Either way BC needs to be broken to get it (some sort of) correct and consistent, allowing to switch from GD-output to e.g. SVG-output without too much difference. (Note that anyhow there will be some difference in calculation of a font-size etc.). Please let me know what you think. I'll do my best to take them into account and make a "wise" decision for the BC-breakage. *sigh* Kind regards, Stefan