Bug 26256 – [Qt] Canvas has wrong image-transformation

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: Layout and Rendering

[Dirk Schulze]

Transformations of images in HTML Canvas are wrong. As you can see in following examples:

* http://www.nihilogic.dk/labs/canvas3dtexture_0.2/
* http://www.netzgesta.de/reflex/ (shares another bug with Qt and clipping, delete complete clipping code to see the problem)
* http://www.nihilogic.dk/labs/mariokart/

This bug is maybe located at BitmapImage::draw() in WebCore/platform/graphics/qt/ImageQt.cpp

[Dirk Schulze]

*** Bug 29470 has been marked as a duplicate of this bug. ***

[Chang Shu]

additional test cases for transformation:
http://waplabdc.nokia-boston.com/browser/users/ligman/canvas%20tests/transformations/rotate_rotate_clockwise.html
http://waplabdc.nokia-boston.com/browser/users/ligman/canvas%20tests/transformations/rotate_rotate_counterclockwise.html
http://waplabdc.nokia-boston.com/browser/users/ligman/canvas%20tests/transformations/scale_scale_2_units.html
http://waplabdc.nokia-boston.com/browser/users/ligman/canvas%20tests/transformations/set_transformation-50_units.html
http://waplabdc.nokia-boston.com/browser/users/ligman/canvas%20tests/transformations/transformation_50_units_x.html
http://waplabdc.nokia-boston.com/browser/users/ligman/canvas%20tests/transformations/transformation_50_units_y.html
http://waplabdc.nokia-boston.com/browser/users/ligman/canvas%20tests/transformations/transformation_reflect_x.html
http://waplabdc.nokia-boston.com/browser/users/ligman/canvas%20tests/transformations/transformation_reflect_y.html

[qi]

All the test case from Chang works fine now. I think because the "translate" issue was fixed couple weeks ago.