CSS Independent Transform Properties

Source/core/style/ComputedStyle.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 24 matching lines @@
 #include "core/style/QuotesData.h"
 #include "core/style/ShadowList.h"
 #include "core/style/StyleImage.h"
 #include "core/style/StyleInheritedData.h"
 #include "platform/LengthFunctions.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/fonts/Font.h"
 #include "platform/fonts/FontSelector.h"
 #include "platform/geometry/FloatRoundedRect.h"
 #include "platform/graphics/GraphicsContext.h"
+#include "platform/transforms/RotateTransformOperation.h"
+#include "platform/transforms/ScaleTransformOperation.h"
+#include "platform/transforms/TranslateTransformOperation.h"
 #include "wtf/MathExtras.h"
 
 #include <algorithm>
 
 namespace blink {
 
 struct SameSizeAsBorderValue {
     RGBA32 m_color;
     unsigned m_width;
 };
@@ skipping 821 matching lines @@
         case CSSPropertyBottom:
         case CSSPropertyRight:
             return true;
         default:
             break;
         }
     }
     return false;
 }
 
-inline bool requireTransformOrigin(const Vector<RefPtr<TransformOperation>>& transformOperations, ComputedStyle::ApplyTransformOrigin applyOrigin, ComputedStyle::ApplyMotionPath applyMotionPath)
+bool ComputedStyle::requireTransformOrigin(ApplyTransformOrigin applyOrigin, ApplyMotionPath applyMotionPath) const
 {
+    const Vector<RefPtr<TransformOperation>>& transformOperations = transform().operations();
+
     // transform-origin brackets the transform with translate operations.
     // Optimize for the case where the only transform is a translation, since the transform-origin is irrelevant
     // in that case.
-    if (applyOrigin != ComputedStyle::IncludeTransformOrigin)
+    if (applyOrigin != IncludeTransformOrigin)
         return false;
 
-    if (applyMotionPath == ComputedStyle::IncludeMotionPath)
+    if (applyMotionPath == IncludeMotionPath)
         return true;
 
     unsigned size = transformOperations.size();
     for (unsigned i = 0; i < size; ++i) {
         TransformOperation::OperationType type = transformOperations[i]->type();
         if (type != TransformOperation::TranslateX
             && type != TransformOperation::TranslateY
             && type != TransformOperation::Translate
             && type != TransformOperation::TranslateZ
             && type != TransformOperation::Translate3D)
             return true;
     }
 
-    return false;
+    return scale() || rotate();
 }
 
-void ComputedStyle::applyTransform(TransformationMatrix& transform, const LayoutSize& borderBoxSize, ApplyTransformOrigin applyOrigin, ApplyMotionPath applyMotionPath) const
+void ComputedStyle::applyTransform(TransformationMatrix& result, const LayoutSize& borderBoxSize, ApplyTransformOrigin applyOrigin, ApplyMotionPath applyMotionPath, ApplyIndependentTransformProperties applyIndependentTransformProperties) const
 {
-    applyTransform(transform, FloatRect(FloatPoint(), FloatSize(borderBoxSize)), applyOrigin, applyMotionPath);
+    applyTransform(result, FloatRect(FloatPoint(), FloatSize(borderBoxSize)), applyOrigin, applyMotionPath, applyIndependentTransformProperties);
 }
 
-void ComputedStyle::applyTransform(TransformationMatrix& transform, const FloatRect& boundingBox, ApplyTransformOrigin applyOrigin, ApplyMotionPath applyMotionPath) const
+void ComputedStyle::applyTransform(TransformationMatrix& result, const FloatRect& boundingBox, ApplyTransformOrigin applyOrigin, ApplyMotionPath applyMotionPath, ApplyIndependentTransformProperties applyIndependentTransformProperties) const
 {
     if (!hasMotionPath())
         applyMotionPath = ExcludeMotionPath;
-    const Vector<RefPtr<TransformOperation>>& transformOperations = rareNonInheritedData->m_transform->m_operations.operations();
-    bool applyTransformOrigin = requireTransformOrigin(transformOperations, applyOrigin, applyMotionPath);
+    bool applyTransformOrigin = requireTransformOrigin(applyOrigin, applyMotionPath);
 
     float offsetX = transformOriginX().type() == Percent ? boundingBox.x() : 0;
     float offsetY = transformOriginY().type() == Percent ? boundingBox.y() : 0;
 
     if (applyTransformOrigin) {
-        transform.translate3d(floatValueForLength(transformOriginX(), boundingBox.width()) + offsetX,
+        result.translate3d(floatValueForLength(transformOriginX(), boundingBox.width()) + offsetX,
             floatValueForLength(transformOriginY(), boundingBox.height()) + offsetY,
             transformOriginZ());
     }
 
+    if (applyIndependentTransformProperties == IncludeIndependentTransformProperties) {
+        if (translate())
+            translate()->apply(result, boundingBox.size());
+
+        if (rotate())
+            rotate()->apply(result, boundingBox.size());
+
+        if (scale())
+            scale()->apply(result, boundingBox.size());
+    }
+
     if (applyMotionPath == ComputedStyle::IncludeMotionPath)
-        applyMotionPathTransform(transform);
+        applyMotionPathTransform(result);
 
+    const Vector<RefPtr<TransformOperation>>& transformOperations = transform().operations();
     unsigned size = transformOperations.size();
     for (unsigned i = 0; i < size; ++i)
-        transformOperations[i]->apply(transform, boundingBox.size());
+        transformOperations[i]->apply(result, boundingBox.size());
 
     if (applyTransformOrigin) {
-        transform.translate3d(-floatValueForLength(transformOriginX(), boundingBox.width()) - offsetX,
+        result.translate3d(-floatValueForLength(transformOriginX(), boundingBox.width()) - offsetX,
             -floatValueForLength(transformOriginY(), boundingBox.height()) - offsetY,
             -transformOriginZ());
     }
 }
 
 void ComputedStyle::applyMotionPathTransform(TransformationMatrix& transform) const
 {
     const StyleMotionData& motionData = rareNonInheritedData->m_transform->m_motion;
     ASSERT(motionData.m_path && motionData.m_path->isPathStyleMotionPath());
     const PathStyleMotionPath& motionPath = toPathStyleMotionPath(*motionData.m_path);
@@ skipping 793 matching lines @@
 }
 
 void ComputedStyle::copyChildDependentFlagsFrom(const ComputedStyle& other)
 {
     setEmptyState(other.emptyState());
     if (other.hasExplicitlyInheritedProperties())
         setHasExplicitlyInheritedProperties();
 }
 
 } // namespace blink