Hi all, I'm pleased to announce that thanks to the help here, I've now managed to get some pictures animating.
The Fl_Pixmap::uncache() tip was the crucial hint for the backend side of things. Although (for now) the GIF images cannot force a redraw of themselves, once their containers do a redraw, the actual animation is visible. In other words, by telling Fl_Help_View to redraw ten times a second, the animation shows fine. (If the animation runs at 25 frames per second, some frames will obviously not be visible- the GIF animation is independent from the refresh rate of its container). The main issue to address now is that in a static GIF image, typically the image size is identical to the size of its canvas. In animated GIF files, any frame may be much smaller than the dimensions of the animation (to save space). All good and well, but our original GIF decoder did not take this distinction into account, so the variables "Width" and "Height" in the code can take on the meaning of either "Canvas Width/height" or "Frame width/height" interchangeably, which can get a bit confusing if it's not made explicit. So now I'm off to figure out which is which. Best, Marc _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
