Web Animations CSS: Support Animation of StyleImage and LengthBox

Source/core/animation/AnimatableLengthBox.cpp

Index: Source/core/animation/AnimatableLengthBox.cpp
diff --git a/Source/core/animation/AnimatableLengthBox.cpp b/Source/core/animation/AnimatableLengthBox.cpp
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index 0000000000000000000000000000000000000000..489882605c3234d1d176d9e8dadc68788b02d7b8
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+++ b/Source/core/animation/AnimatableLengthBox.cpp
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+/*
+ * 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, 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 "core/animation/AnimatableLengthBox.h"
+
+namespace WebCore {
+
+PassRefPtr<AnimatableValue> AnimatableLengthBox::interpolateTo(const AnimatableValue* value, double fraction) const
+{
+    const AnimatableLengthBox* lengthBox = toAnimatableLengthBox(value);
+    return AnimatableLengthBox::create(
+        AnimatableValue::interpolate(this->left(), lengthBox->left(), fraction),
+        AnimatableValue::interpolate(this->right(), lengthBox->right(), fraction),
+        AnimatableValue::interpolate(this->top(), lengthBox->top(), fraction),
+        AnimatableValue::interpolate(this->bottom(), lengthBox->bottom(), fraction));
+}
+
+PassRefPtr<AnimatableValue> AnimatableLengthBox::addWith(const AnimatableValue* value) const
+{
+    const AnimatableLengthBox* lengthBox = toAnimatableLengthBox(value);
+    return AnimatableLengthBox::create(
+        AnimatableValue::add(this->left(), lengthBox->left()),
+        AnimatableValue::add(this->right(), lengthBox->right()),
+        AnimatableValue::add(this->top(), lengthBox->top()),
+        AnimatableValue::add(this->bottom(), lengthBox->bottom()));
+}
+
+}