Thank you. On Mon, Jun 15, 2020, 7:19 AM Antonio Scuri <antonio.sc...@gmail.com> wrote:
> > What will be the difference here? > > How the control expand inside the dialog. The attribute CANVASBOX can > revert that behavior if necessary. > > > I want to have a canvas where I want to also add controls inside like > iupplot. I assume IupBackgroundbox would be perfect for it. What things > should I watch out for differences with iupcanvas? > > Notice that there is no transparency between controls. The children that > have a visual representation will actually be inside their rectangles. It > is different than IupGLControls were the controls are drawn inside the > IupGLCanvasBox, but not all controls have equivalent controls implemented > in OpenGL. > > You can also use the OpenGL canvas and non OpenGL children in the same > way. But recently we have a weird behavior with this configuration, because > OpenGL does not handle the clipping of child windows very well when using a > scrollbox. > > Anyway, you have to test what's the best configuration for you. And be > aware that the more complex the mix is, the more weird things can happen. > > I think that starting with a IupBackgroundBox and using regular controls > (not OpenGL) can be a good start. > > Best, > Scuri > > > Em sáb., 13 de jun. de 2020 às 18:43, Milind Gupta <milind.gu...@gmail.com> > escreveu: > >> Got it. >> >> The behavior of a container inside a layout is not the same as a pure >>> canvas. >>> >> >> What will be the difference here? >> >> I want to have a canvas where I want to also add controls inside like >> iupplot. I assume IupBackgroundbox would be perfect for it. What things >> should I watch out for differences with iupcanvas? >> >> >> Thanks, >> Milind >> >> >> >> >> >> >> >> Also you are adding an overhead to your application that will never be >>> used if it is just drawing in the canvas. >>> >>> > Continuing it seems that all functionality of IupCanvas, >>> IupBackgroundBox, IupGLCanvas can be provided by IupGLBackground. >>> >>> Sort of, now you are increasing the overhead by adding OpenGL. Even if >>> you don't use OpenGL, there will be calls to OpenGL functions so the >>> IupGLCanvas can be initialized. >>> >>> > So if I always use IupGLCanvasBox I should never need to use the >>> others. >>> >>> The IupGLCanvasBox container is not implemented in the same way as the >>> IupGLBackgroundBox. The overhead of other libraries and dependencies is >>> increased. IupGLCanvasBox is inside IupGLControls that is dependent from >>> FTGL and Freetype. >>> >>> I would never recommend such simplification. >>> >>> Best, >>> Scuri >>> >>> >>> >>> >>> Em sáb., 13 de jun. de 2020 às 17:47, Milind Gupta < >>> milind.gu...@gmail.com> escreveu: >>> >>>> Thanks for the summary. I had read their documentation and what I >>>> understood and still seem to think from your summary is that: >>>> >>>> All functionality of IupCanvas can also be provided by >>>> IupBackgroundBox. It provides additional functionality of serving as a >>>> container. So in theory I can choose to always use IupBackgroundBox over >>>> IupCanvas. >>>> >>>> Continuing it seems that all functionality of IupCanvas, >>>> IupBackgroundBox, IupGLCanvas can be provided by IupGLBackground. >>>> >>>> Also it seems that IupGLCanvasBox can provide all functionality of all >>>> the above combined and add functionality to display the OpenGL based >>>> controls. >>>> >>>> So if I always use IupGLCanvasBox I should never need to use the >>>> others. This is what I understood from the documentation and from your >>>> summary as well. I think I am missing cases where say IupCanvas would be a >>>> better choice than IupGLCanvasBox. What are those cases? >>>> >>>> Thanks, >>>> Milind >>>> >>>> On Sat, Jun 13, 2020 at 11:39 AM Antonio Scuri <antonio.sc...@gmail.com> >>>> wrote: >>>> >>>>> Hi, >>>>> >>>>> You got to take a look at their documentation. But here is a quick >>>>> glimpse: >>>>> >>>>> * IupCanvas - the main control, where you can draw, all others inherit >>>>> from this one >>>>> * IupBackgroundBox - inherits from IupCanvas, but it is a container. >>>>> So it is a container where you can draw or simply control the background >>>>> color below other controls. >>>>> * IupGLCanvas - inherits from IupCanvas, but adds OpenGL support. >>>>> * IupGLBackground - inherits from IupGLCanvas, but it is a container >>>>> like IupBackgroundBox. Same purpose but with OpenGL support. >>>>> * IupGLCanvasBox - same as IupGLBackground, but it is designed for >>>>> being the parent of a set of OpenGL based controls in the >>>>> IupGLControls library. It has a more complex implementation >>>>> than IupGLBackground so we decided to leave it as a separate control >>>>> * IupGLSubCanvas - a virtual canvas used for the OpenGL based >>>>> controls. It is not actually a canvas, it is a region inside the >>>>> IupGLCanvasBox used as base for the IupGLControls library elements. >>>>> >>>>> Best, >>>>> Scuri >>>>> >>>>> >>>>> >>>>> >>>>> Em sáb., 13 de jun. de 2020 às 01:09, Milind Gupta < >>>>> milind.gu...@gmail.com> escreveu: >>>>> >>>>>> Hi Antonio, >>>>>> I am a little confused about all the canvas options in IUP. I >>>>>> found these: >>>>>> >>>>>> * iupcanvas >>>>>> * IupBackgroundBox >>>>>> * IupGLCanvas >>>>>> * IupGLBackground >>>>>> * IupGLCanvasBox >>>>>> * IupGLSubCanvas >>>>>> >>>>>> All of them can act like a canvas I believe. What are the specific >>>>>> instances when each of them should be used? >>>>>> >>>>>> Regards, >>>>>> Milind >>>>>> _______________________________________________ >>>>>> Iup-users mailing list >>>>>> Iup-users@lists.sourceforge.net >>>>>> https://lists.sourceforge.net/lists/listinfo/iup-users >>>>>> >>>>> _______________________________________________ >>>>> Iup-users mailing list >>>>> Iup-users@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/iup-users >>>>> >>>> _______________________________________________ >>>> Iup-users mailing list >>>> Iup-users@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/iup-users >>>> >>> _______________________________________________ >>> Iup-users mailing list >>> Iup-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/iup-users >>> >> _______________________________________________ >> Iup-users mailing list >> Iup-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/iup-users >> > _______________________________________________ > Iup-users mailing list > Iup-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/iup-users >
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