1 files changed, 221 insertions, 0 deletions
diff --git a/cc/CCKeyframedAnimationCurve.cpp b/cc/CCKeyframedAnimationCurve.cpp
new file mode 100644
index 0000000..d056b64
--- /dev/null
+++ b/cc/CCKeyframedAnimationCurve.cpp
@@ -0,0 +1,221 @@
+// Copyright 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+
+#include "CCKeyframedAnimationCurve.h"
+
+#include <wtf/OwnPtr.h>
+
+using WebKit::WebTransformationMatrix;
+
+namespace WebCore {
+
+namespace {
+
+template <class Keyframe>
+void insertKeyframe(PassOwnPtr<Keyframe> popKeyframe, Vector<OwnPtr<Keyframe> >& keyframes)
+{
+    OwnPtr<Keyframe> keyframe = popKeyframe;
+
+    // Usually, the keyframes will be added in order, so this loop would be unnecessary and
+    // we should skip it if possible.
+    if (!keyframes.isEmpty() && keyframe->time() < keyframes.last()->time()) {
+        for (size_t i = 0; i < keyframes.size(); ++i) {
+            if (keyframe->time() < keyframes[i]->time()) {
+                keyframes.insert(i, keyframe.release());
+                return;
+            }
+        }
+    }
+
+    keyframes.append(keyframe.release());
+}
+
+PassOwnPtr<CCTimingFunction> cloneTimingFunction(const CCTimingFunction* timingFunction)
+{
+    ASSERT(timingFunction);
+    OwnPtr<CCAnimationCurve> curve(timingFunction->clone());
+    return adoptPtr(static_cast<CCTimingFunction*>(curve.leakPtr()));
+}
+
+} // namespace
+
+CCKeyframe::CCKeyframe(double time, PassOwnPtr<CCTimingFunction> timingFunction)
+    : m_time(time)
+    , m_timingFunction(timingFunction)
+{
+}
+
+CCKeyframe::~CCKeyframe()
+{
+}
+
+double CCKeyframe::time() const
+{
+    return m_time;
+}
+
+const CCTimingFunction* CCKeyframe::timingFunction() const
+{
+    return m_timingFunction.get();
+}
+
+PassOwnPtr<CCFloatKeyframe> CCFloatKeyframe::create(double time, float value, PassOwnPtr<CCTimingFunction> timingFunction)
+{
+    return adoptPtr(new CCFloatKeyframe(time, value, timingFunction));
+}
+
+CCFloatKeyframe::CCFloatKeyframe(double time, float value, PassOwnPtr<CCTimingFunction> timingFunction)
+    : CCKeyframe(time, timingFunction)
+    , m_value(value)
+{
+}
+
+CCFloatKeyframe::~CCFloatKeyframe()
+{
+}
+
+float CCFloatKeyframe::value() const
+{
+    return m_value;
+}
+
+PassOwnPtr<CCFloatKeyframe> CCFloatKeyframe::clone() const
+{
+    return CCFloatKeyframe::create(time(), value(), timingFunction() ? cloneTimingFunction(timingFunction()) : nullptr);
+}
+
+PassOwnPtr<CCTransformKeyframe> CCTransformKeyframe::create(double time, const WebKit::WebTransformOperations& value, PassOwnPtr<CCTimingFunction> timingFunction)
+{
+    return adoptPtr(new CCTransformKeyframe(time, value, timingFunction));
+}
+
+CCTransformKeyframe::CCTransformKeyframe(double time, const WebKit::WebTransformOperations& value, PassOwnPtr<CCTimingFunction> timingFunction)
+    : CCKeyframe(time, timingFunction)
+    , m_value(value)
+{
+}
+
+CCTransformKeyframe::~CCTransformKeyframe()
+{
+}
+
+const WebKit::WebTransformOperations& CCTransformKeyframe::value() const
+{
+    return m_value;
+}
+
+PassOwnPtr<CCTransformKeyframe> CCTransformKeyframe::clone() const
+{
+    return CCTransformKeyframe::create(time(), value(), timingFunction() ? cloneTimingFunction(timingFunction()) : nullptr);
+}
+
+PassOwnPtr<CCKeyframedFloatAnimationCurve> CCKeyframedFloatAnimationCurve::create()
+{
+    return adoptPtr(new CCKeyframedFloatAnimationCurve);
+}
+
+CCKeyframedFloatAnimationCurve::CCKeyframedFloatAnimationCurve()
+{
+}
+
+CCKeyframedFloatAnimationCurve::~CCKeyframedFloatAnimationCurve()
+{
+}
+
+void CCKeyframedFloatAnimationCurve::addKeyframe(PassOwnPtr<CCFloatKeyframe> keyframe)
+{
+    insertKeyframe(keyframe, m_keyframes);
+}
+
+double CCKeyframedFloatAnimationCurve::duration() const
+{
+    return m_keyframes.last()->time() - m_keyframes.first()->time();
+}
+
+PassOwnPtr<CCAnimationCurve> CCKeyframedFloatAnimationCurve::clone() const
+{
+    OwnPtr<CCKeyframedFloatAnimationCurve> toReturn(CCKeyframedFloatAnimationCurve::create());
+    for (size_t i = 0; i < m_keyframes.size(); ++i)
+        toReturn->addKeyframe(m_keyframes[i]->clone());
+    return toReturn.release();
+}
+
+float CCKeyframedFloatAnimationCurve::getValue(double t) const
+{
+    if (t <= m_keyframes.first()->time())
+        return m_keyframes.first()->value();
+
+    if (t >= m_keyframes.last()->time())
+        return m_keyframes.last()->value();
+
+    size_t i = 0;
+    for (; i < m_keyframes.size() - 1; ++i) {
+        if (t < m_keyframes[i+1]->time())
+            break;
+    }
+
+    float progress = static_cast<float>((t - m_keyframes[i]->time()) / (m_keyframes[i+1]->time() - m_keyframes[i]->time()));
+
+    if (m_keyframes[i]->timingFunction())
+        progress = m_keyframes[i]->timingFunction()->getValue(progress);
+
+    return m_keyframes[i]->value() + (m_keyframes[i+1]->value() - m_keyframes[i]->value()) * progress;
+}
+
+PassOwnPtr<CCKeyframedTransformAnimationCurve> CCKeyframedTransformAnimationCurve::create()
+{
+    return adoptPtr(new CCKeyframedTransformAnimationCurve);
+}
+
+CCKeyframedTransformAnimationCurve::CCKeyframedTransformAnimationCurve()
+{
+}
+
+CCKeyframedTransformAnimationCurve::~CCKeyframedTransformAnimationCurve()
+{
+}
+
+void CCKeyframedTransformAnimationCurve::addKeyframe(PassOwnPtr<CCTransformKeyframe> keyframe)
+{
+    insertKeyframe(keyframe, m_keyframes);
+}
+
+double CCKeyframedTransformAnimationCurve::duration() const
+{
+    return m_keyframes.last()->time() - m_keyframes.first()->time();
+}
+
+PassOwnPtr<CCAnimationCurve> CCKeyframedTransformAnimationCurve::clone() const
+{
+    OwnPtr<CCKeyframedTransformAnimationCurve> toReturn(CCKeyframedTransformAnimationCurve::create());
+    for (size_t i = 0; i < m_keyframes.size(); ++i)
+        toReturn->addKeyframe(m_keyframes[i]->clone());
+    return toReturn.release();
+}
+
+WebTransformationMatrix CCKeyframedTransformAnimationCurve::getValue(double t) const
+{
+    if (t <= m_keyframes.first()->time())
+        return m_keyframes.first()->value().apply();
+
+    if (t >= m_keyframes.last()->time())
+        return m_keyframes.last()->value().apply();
+
+    size_t i = 0;
+    for (; i < m_keyframes.size() - 1; ++i) {
+        if (t < m_keyframes[i+1]->time())
+            break;
+    }
+
+    double progress = (t - m_keyframes[i]->time()) / (m_keyframes[i+1]->time() - m_keyframes[i]->time());
+
+    if (m_keyframes[i]->timingFunction())
+        progress = m_keyframes[i]->timingFunction()->getValue(progress);
+
+    return m_keyframes[i+1]->value().blend(m_keyframes[i]->value(), progress);
+}
+
+} // namespace WebCore