[cairo] new pattern interface bug
c99drn at cs.umu.se
Tue Apr 6 03:33:23 PDT 2004
On Mon, 2004-04-05 at 23:16 -0700, Vladimir Vukicevic wrote:
> I have some code that creates a surface from data (image data), and then
> renders the image like so:
> cairo_t *ct = ...;
> cairo_set_pattern (ct, image_surface);
> cairo_move_to (ct, x, y);
> cairo_rectangle (ct, x, y, width, height);
> cairo_fill (ct);
> With the pattern patch, I changed this to:
> cairo_pattern_t *image_pattern = cairo_pattern_create_for_surface
> cairo_set_pattern (ct, image_pattern);
> ... /* as above */
> cairo_pattern_destroy (image_pattern);
> However, in the second case, the surface is always rendered at 0,0; or
> rather, it tries to be rendered there, but is clipped to the rect.
> (Note: I just noticed that the move_to is redundant, but I can't easily
> re-test this without the move_to atm :) So, if the image is 100 pixels
> wide, and I render at x = 50, in the first case, the image is rendered
> from 50 to 150; in the second case, I only see the second "half" of the
> image, at x=50 to 100.
> Am I doing something wrong with the (propsed) pattern interface?
No, this is a bug, but I've now fixed it and the latest patches (dated:
040406) should work fine.
David Reveman <c99drn at cs.umu.se>
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