Have you looked at Cairo? Instead of using GDK you can use Cairo.
Unfortunately I don't know anything about ROP2, ROP3, Porter and
Duff, I don't know what they are, but using Cairo is easy and seems more
powerful than GDK to me, I use a GtkDrawingArea too (but drawing with
Cairo of course).
Hope this helps.
Bye.
El 10/07/06 23:45, Asela Leelaratne escribió:
>Hello List members,
>
>I am Asela this is my first email to the list. I just started developing
>a small application in C language uisng the Gtk+2.0 library. I need some
>information on the Gtk+ (of GDK) api's. I will be very greatefull if
>someone can help me. ( Since I am a newbie an explanation in the most
>simplest way is much appreciated).
>
>I am currentrly developing a program to render a vector image to screen.
>(The image is in XML data) The method I use is; first create a Gtk draw
>widget then draw polygons and lines in to a Gdk pixmap usind Gdk drawing
>api's and draw the Gdk pixmap on the Gtk draw widget. Then show it on a
>window.
>
>The problem is I need to do some raster operations like ROP2, ROP3,
>Porter and Duff etc... Are there any api's in Gtk(or Gdk) to achive it?
>If not is there a library or something that I can use(C language)?
>If both the above is not possible is there a standard method to do the
>above operations(C language, GDK and Gtk widgets)?
>
>Thank you for your time.
>Asela.
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>
>
>
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