Review Request: Fix bug with zero scale of the brush in krita

[Dmitry Kazakov]

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http://git.reviewboard.kde.org/r/103445/
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Review request for Calligra.


Description
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When using tablet, the last events coming from it are almost zero, so the resulting scale is zero as well. Default mask generator will get crazy if it gets zero scale due to division by zero. So we need to check in most of the tools whether the scale is zero.


This addresses bug 289145.
    http://bugs.kde.org/show_bug.cgi?id=289145


Diffs
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  krita/plugins/paintops/complexop/kis_complexop.cpp b0742ea 
  krita/plugins/paintops/defaultpaintops/duplicate/kis_duplicateop.cpp 9a2d75a 
  krita/plugins/paintops/deform/kis_deform_paintop.cpp e8c1f51 
  krita/plugins/paintops/hairy/kis_hairy_paintop.cpp b6c2773 
  krita/plugins/paintops/sketch/kis_sketch_paintop.cpp 0a86895 
  krita/plugins/paintops/spray/kis_spray_paintop.cpp 4d8a6f2 

Diff: http://git.reviewboard.kde.org/r/103445/diff/diff


Testing
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Thanks,

Dmitry Kazakov

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