diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gui/graphicsview/qgraphicsitem_p.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/gui/graphicsview/qgraphicsitem_p.h b/src/gui/graphicsview/qgraphicsitem_p.h index 49361cf..55ed62e 100644 --- a/src/gui/graphicsview/qgraphicsitem_p.h +++ b/src/gui/graphicsview/qgraphicsitem_p.h @@ -517,6 +517,19 @@ struct QGraphicsItemPrivate::TransformData return transform * *postmultiplyTransform; } + if (graphicsTransforms.isEmpty()) { + // Faster, and higher precision if there are no graphics + // transforms. + QTransform x(transform); + x.translate(xOrigin, yOrigin); + x.rotate(rotation); + x.scale(scale, scale); + x.translate(-xOrigin, -yOrigin); + if (postmultiplyTransform) + x *= *postmultiplyTransform; + return x; + } + QMatrix4x4 x(transform); for (int i = 0; i < graphicsTransforms.size(); ++i) graphicsTransforms.at(i)->applyTo(&x); |