Hi,
I think over how to implement canvas for Carbon interface.
There are two possibilities to use: QuickDraw or Quartz 2D. I want to
consult it with you.
Here is the list of disadvantages, I have found:
QuickDraw
- DC of Carbon controls must use Window Port
- deprecated in Mac OS X v10.4
Quartz 2D
- unable to implement GetPixel, FloodFill, SetPixel must be simulated
via line drawing
- different coordination system (change Current Transformation Matrix)
- bledning instead of ROP
- bitmap canvas implementation (needs Mac OS X v10.4 because of
CGBitmapContextCreateImage, but we can get round it)
Feel free to point out anything I have omitted.
From my point of view the Quartz 2D appears to be more suitable,
although it doesn't provide per-pixel operations.
Regards,
Tom Gregorovic
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