Merge ReferenceFilter into Filter

Source/platform/graphics/filters/Filter.cpp

 /*
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
@@ skipping 11 matching lines @@
  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #include "config.h"
-
-#include "platform/graphics/filters/ReferenceFilter.h"
+#include "platform/graphics/filters/Filter.h"
 
 #include "platform/graphics/filters/FilterEffect.h"
 #include "platform/graphics/filters/SourceGraphic.h"
 
 namespace blink {
 
-ReferenceFilter::ReferenceFilter(const FloatRect& targetBoundingBox, const FloatRect& filterRegion, float scale)
-    : Filter(targetBoundingBox, filterRegion, scale)
+Filter::Filter(const FloatRect& referenceBox, const FloatRect& filterRegion, float scale)
+    : m_referenceBox(referenceBox)
+    , m_filterRegion(filterRegion)
+    , m_scale(scale)
     , m_sourceGraphic(SourceGraphic::create(this))
 {
 }
 
-ReferenceFilter::~ReferenceFilter()
+Filter::~Filter()
 {
 }
 
-DEFINE_TRACE(ReferenceFilter)
+DEFINE_TRACE(Filter)
 {
     visitor->trace(m_sourceGraphic);
     visitor->trace(m_lastEffect);
-    Filter::trace(visitor);
 }
 
-void ReferenceFilter::setLastEffect(PassRefPtrWillBeRawPtr<FilterEffect> effect)
+FloatRect Filter::mapLocalRectToAbsoluteRect(const FloatRect& rect) const
+{
+    FloatRect result(rect);
+    result.scale(m_scale);
+    return result;
+}
+
+FloatRect Filter::mapAbsoluteRectToLocalRect(const FloatRect& rect) const
+{
+    FloatRect result(rect);
+    result.scale(1.0f / m_scale);
+    return result;
+}
+
+void Filter::setLastEffect(PassRefPtrWillBeRawPtr<FilterEffect> effect)
 {
     m_lastEffect = effect;
 }
 
 } // namespace blink