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
new file mode 100644
index 0000000000000000000000000000000000000000..eeca907c29f2d843c7e67d87c977fb5cc58c36fb
--- /dev/null
+++ b/Source/core/animation/AnimatableLengthBox.cpp
@@ -0,0 +1,56 @@
+/*
+ * 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* other, double fraction) const

[Timothy Loh, 2013/08/27 04:26:06]

tiny nit: I think we were using value as the name for this in the other
AnimatableValues?

[dstockwell, 2013/08/27 05:02:02]

Done.

+{
+    const AnimatableLengthBox* otherAnimatableLengthBox = toAnimatableLengthBox(other);

[Timothy Loh, 2013/08/27 04:26:06]

tiny nit continued: And this would be named lengthBox

[dstockwell, 2013/08/27 05:02:02]

Done.

+    return AnimatableLengthBox::create(
+        AnimatableValue::interpolate(this->left(), otherAnimatableLengthBox->left(), fraction),
+        AnimatableValue::interpolate(this->right(), otherAnimatableLengthBox->right(), fraction),
+        AnimatableValue::interpolate(this->top(), otherAnimatableLengthBox->top(), fraction),
+        AnimatableValue::interpolate(this->bottom(), otherAnimatableLengthBox->bottom(), fraction));
+}
+
+PassRefPtr<AnimatableValue> AnimatableLengthBox::addWith(const AnimatableValue* other) const
+{
+    const AnimatableLengthBox* otherAnimatableLengthBox = toAnimatableLengthBox(other);
+    return AnimatableLengthBox::create(
+        AnimatableValue::add(this->left(), otherAnimatableLengthBox->left()),
+        AnimatableValue::add(this->right(), otherAnimatableLengthBox->right()),
+        AnimatableValue::add(this->top(), otherAnimatableLengthBox->top()),
+        AnimatableValue::add(this->bottom(), otherAnimatableLengthBox->bottom()));
+}
+
+}