The effect you observe is caused by the paint call at the bottom. Remove that and it should work fine. But you also have to insert ctx.set_operator(Cairo.Operator.CLEAR); ctx.paint(); ctx.set_operator(Cairo.Operator.OVER); at the very bottom of the draw method which clears the canvas. Clutter doesn't do that for you. On Apr 15, 2013 6:05 AM, "Craig" <webe...@gmail.com> wrote:
> I posted this question on StackOverflow, but I'm hoping you guys can help > answer it as well: > > I'm playing around with Clutter/cairo and I'm trying to draw a rectangle; > however, it appears that theset_source_rgb is automatically painting the > whole canvas with its source, regardless of whether or not I tell it to > draw a rectangle (that is, even when I remove the ctx.rectangle() and > ctx.fill()lines, the rectangle is still drawn). Why is this? And what do > I need to do to have the rectangle do the painting rather than the > set_source_rgb? > > The source can be found in the original SO question here: > http://stackoverflow.com/questions/16007420/why-does-cairo-set-source-rgb-paint-the-whole-canvas > > Please advise, because I'm stumped! > > Thanks List! > - Craig > > -- > Mailing list: https://launchpad.net/~elementary-dev-community > Post to : elementary-dev-community@lists.launchpad.net > Unsubscribe : https://launchpad.net/~elementary-dev-community > More help : https://help.launchpad.net/ListHelp > >
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