Re: [fltk.general] R: Re: R: Bargraph object with Fl_Group
On 03/15/13 08:02, memoryl...@tin.it wrote: I need a bit of thinking. I am writing an app for creating supervision screens on an embedded platform. All is ruled by a configuration text file : it is parsed from my program which then creates all the pages, the buttons for page jumps, the graphics objects and so on. In general I do not know what there will be under my bargraph : maybe a picture, maybe a filled background. The situation is more similar to the desktop you mentioned. For now the simplest solution I can imagine is to redraw the whole parent of my object. Thanks a lot for your observations, If the image is assigned to the bargraph's group, then just telling the bargraph widget to redraw() will do it. But if the image is assigned to the parent window, then you'll have to tell the parent window to redraw. Be sure to use an Fl_Double_Window to prevent flickering during redraws. ___ fltk mailing list fltk@easysw.com http://lists.easysw.com/mailman/listinfo/fltk
Re: [fltk.general] R: Re: R: Bargraph object with Fl_Group
On 15 Mar 2013, at 15:02, memoryl...@tin.it wrote: In general I do not know what there will be under my bargraph : maybe a picture, maybe a filled background. The situation is more similar to the desktop you mentioned. So long as the background is drawn by your app, then it is feasible to composite the bar graphs and etc on top of it. But: If the background is drawn by some other app, or is otherwise outside the control of your app windows, then compositing the graphs and so forth on top becomes Very Tricky. For now the simplest solution I can imagine is to redraw the whole parent of my object. Quite possibly: I think we need to understand more about the nature of the backgrounds, how they are drawn etc, and from there we can figure out how to render the graphs on top of them... ___ fltk mailing list fltk@easysw.com http://lists.easysw.com/mailman/listinfo/fltk
