[cc] Rename all cc/ filenames to Chromium style

cc/input_handler.h

-// Copyright 2012 The Chromium Authors. All rights reserved.
+// Copyright 2011 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.
+
+#ifndef CCInputHandler_h
+#define CCInputHandler_h
+
+#include "base/basictypes.h"
+#include <wtf/PassOwnPtr.h>
+
+namespace cc {
+
+class IntPoint;
+class IntSize;
+
+// The CCInputHandler is a way for the embedders to interact with
+// the impl thread side of the compositor implementation.
+//
+// There is one CCInputHandler for every CCLayerTreeHost. It is
+// created on the main thread and used only on the impl thread.
+//
+// The CCInputHandler is constructed with a CCInputHandlerClient, which is the
+// interface by which the handler can manipulate the LayerTree.
+class CCInputHandlerClient {
+public:
+    enum ScrollStatus { ScrollOnMainThread, ScrollStarted, ScrollIgnored };
+    enum ScrollInputType { Gesture, Wheel };
+
+    // Selects a layer to be scrolled at a given point in window coordinates.
+    // Returns ScrollStarted if the layer at the coordinates can be scrolled,
+    // ScrollOnMainThread if the scroll event should instead be delegated to the
+    // main thread, or ScrollIgnored if there is nothing to be scrolled at the
+    // given coordinates.
+    virtual ScrollStatus scrollBegin(const IntPoint&, ScrollInputType) = 0;
+
+    // Scroll the selected layer starting at the given window coordinate. If
+    // there is no room to move the layer in the requested direction, its first
+    // ancestor layer that can be scrolled will be moved instead. Should only be
+    // called if scrollBegin() returned ScrollStarted.
+    virtual void scrollBy(const IntPoint&, const IntSize&) = 0;
+
+    // Stop scrolling the selected layer. Should only be called if scrollBegin()
+    // returned ScrollStarted.
+    virtual void scrollEnd() = 0;
+
+    virtual void pinchGestureBegin() = 0;
+    virtual void pinchGestureUpdate(float magnifyDelta, const IntPoint& anchor) = 0;
+    virtual void pinchGestureEnd() = 0;
+
+    virtual void startPageScaleAnimation(const IntSize& targetPosition,
+                                         bool anchorPoint,
+                                         float pageScale,
+                                         double startTime,
+                                         double duration) = 0;
+
+    // Request another callback to CCInputHandler::animate().
+    virtual void scheduleAnimation() = 0;
+
+protected:
+    CCInputHandlerClient() { }
+    virtual ~CCInputHandlerClient() { }
+
+private:
+    DISALLOW_COPY_AND_ASSIGN(CCInputHandlerClient);
+};
+
+class CCInputHandler {
+public:
+    virtual ~CCInputHandler() { }
+
+    virtual void bindToClient(CCInputHandlerClient*) = 0;
+    virtual void animate(double monotonicTime) = 0;
+
+protected:
+    CCInputHandler() { }
+
+private:
+    DISALLOW_COPY_AND_ASSIGN(CCInputHandler);
+};
+
+}
+
+#endif