diff options
Diffstat (limited to 'chromium/cc/animation/transform_operations.h')
| -rw-r--r-- | chromium/cc/animation/transform_operations.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/chromium/cc/animation/transform_operations.h b/chromium/cc/animation/transform_operations.h index 7c509349092..f086eb1baac 100644 --- a/chromium/cc/animation/transform_operations.h +++ b/chromium/cc/animation/transform_operations.h @@ -57,6 +57,20 @@ class CC_EXPORT TransformOperations { SkMScalar max_progress, gfx::BoxF* bounds) const; + // Returns true if these operations affect scale. + bool AffectsScale() const; + + // Returns true if these operations are only translations. + bool IsTranslation() const; + + // Sets |max_scale| to be the maximum scale in any dimension when calling + // Blend on |from| with progress in the range [min_progress, max_progress]. If + // this maximum scale cannot be computed, returns false. + bool MaximumScale(const TransformOperations& from, + SkMScalar min_progress, + SkMScalar max_progress, + float* max_scale) const; + // Returns true if this operation and its descendants have the same types // as other and its descendants. bool MatchesTypes(const TransformOperations& other) const; @@ -84,6 +98,11 @@ class CC_EXPORT TransformOperations { bool ComputeDecomposedTransform() const; + // If these operations have no more than one scale operation, and if the only + // other operations are translations, sets |scale| to the scale component + // of these operations. Otherwise, returns false. + bool ScaleComponent(gfx::Vector3dF* scale) const; + // For efficiency, we cache the decomposed transform. mutable scoped_ptr<gfx::DecomposedTransform> decomposed_transform_; mutable bool decomposed_transform_dirty_; |