[Webkit-unassigned] [Bug 16610] <canvas> restore() removes path segments created before it

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=16610


oliver at apple.com changed:

           What    |Removed                     |Added
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                 CC|                            |ian at hixie.ch




------- Comment #3 from oliver at apple.com  2008-03-06 04:26 PDT -------
Erk, it would appear that firefox attempts to maintain the screen position and
size of a path across save/restore boundaries.  In effect, firefox appears to
be trying to make:
save();
translate(100,100);
rect(0,0,10,10);
restore()

produce the same thing as
translate(100,100);
rect(0,0,10,10);
translate(-100,-100);

In practice this means that we have to maintain the transform for each level of
the state stack -- this makes me unhappy, and i feel is not spec behaviour.  My
reading of the spec would indicate that the opera behaviour is correct -- after
restore() drawing the path should result in a circle, whereas firefox produces
an ellipse.


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