Merge SVGFilter into Filter

Source/platform/graphics/filters/Filter.cpp

Index: Source/platform/graphics/filters/Filter.cpp
diff --git a/Source/platform/graphics/filters/Filter.cpp b/Source/platform/graphics/filters/Filter.cpp
index 6aa814174cf3c2b485dbfd493fbab4b508f8ace4..22ba718e5ef557466470ce0ddee8ac86ff241189 100644
--- a/Source/platform/graphics/filters/Filter.cpp
+++ b/Source/platform/graphics/filters/Filter.cpp
@@ -36,10 +36,11 @@
 
 namespace blink {
 
-Filter::Filter(const FloatRect& referenceBox, const FloatRect& filterRegion, float scale)
+Filter::Filter(const FloatRect& referenceBox, const FloatRect& filterRegion, float scale, UnitScaling unitScaling)
     : m_referenceBox(referenceBox)
     , m_filterRegion(filterRegion)
     , m_scale(scale)
+    , m_unitScaling(unitScaling)
     , m_sourceGraphic(SourceGraphic::create(this))
 {
 }
@@ -48,6 +49,16 @@ Filter::~Filter()
 {
 }
 
+PassRefPtrWillBeRawPtr<Filter> Filter::create(const FloatRect& referenceBox, const FloatRect& filterRegion, float scale, UnitScaling unitScaling)
+{
+    return adoptRefWillBeNoop(new Filter(referenceBox, filterRegion, scale, unitScaling));
+}
+
+PassRefPtrWillBeRawPtr<Filter> Filter::create(float scale)
+{
+    return adoptRefWillBeNoop(new Filter(FloatRect(), FloatRect(), scale, UserSpace));
+}
+
 DEFINE_TRACE(Filter)
 {
     visitor->trace(m_sourceGraphic);
@@ -68,6 +79,29 @@ FloatRect Filter::mapAbsoluteRectToLocalRect(const FloatRect& rect) const
     return result;
 }
 
+float Filter::applyHorizontalScale(float value) const
+{
+    if (m_unitScaling == BoundingBox)
+        value *= referenceBox().width();
+    return m_scale * value;
+}
+
+float Filter::applyVerticalScale(float value) const
+{
+    if (m_unitScaling == BoundingBox)
+        value *= referenceBox().height();
+    return m_scale * value;
+}
+
+FloatPoint3D Filter::resolve3dPoint(const FloatPoint3D& point) const
+{
+    if (m_unitScaling != BoundingBox)
+        return point;
+    return FloatPoint3D(point.x() * referenceBox().width() + referenceBox().x(),
+        point.y() * referenceBox().height() + referenceBox().y(),
+        point.z() * sqrtf(referenceBox().size().diagonalLengthSquared() / 2));
+}
+
 void Filter::setLastEffect(PassRefPtrWillBeRawPtr<FilterEffect> effect)
 {
     m_lastEffect = effect;