cc: Chromify the LayerTreeHostImpl class.

cc/input_handler.h

 // 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 CC_INPUT_HANDLER_H_
 #define CC_INPUT_HANDLER_H_
 
 #include "base/basictypes.h"
 #include "base/time.h"
 #include "cc/cc_export.h"
 
 namespace gfx {
 class Point;
 class PointF;
 class Vector2d;
 class Vector2dF;
 }
 
 namespace cc {
 
 // The InputHandler is a way for the embedders to interact with
 // the impl thread side of the compositor implementation.
 //
 // There is one InputHandler for every LayerTreeHost. It is
 // created on the main thread and used only on the impl thread.
 //
 // The InputHandler is constructed with a InputHandlerClient, which is the
 // interface by which the handler can manipulate the LayerTree.
 class CC_EXPORT InputHandlerClient {
-public:
-    enum ScrollStatus { ScrollOnMainThread, ScrollStarted, ScrollIgnored };
-    enum ScrollInputType { Gesture, Wheel, NonBubblingGesture };
+ public:
+  enum ScrollStatus { ScrollOnMainThread, ScrollStarted, ScrollIgnored };
+  enum ScrollInputType { Gesture, Wheel, NonBubblingGesture };
 
-    // Selects a layer to be scrolled at a given point in viewport (logical
-    // pixel) 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(gfx::Point, ScrollInputType) = 0;
+  // Selects a layer to be scrolled at a given point in viewport (logical
+  // pixel) 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(gfx::Point viewport_point,
+                                   ScrollInputType type) = 0;
 
-    // Scroll the selected layer starting at the given position. If the scroll
-    // type given to scrollBegin was a gesture, then the scroll point and delta
-    // should be in viewport (logical pixel) coordinates. Otherwise they are in
-    // scrolling layer's (logical pixel) space. 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. If no layer can be moved in the requested
-    // direction at all, then false is returned. If any layer is moved, then
-    // true is returned.
-    // Should only be called if scrollBegin() returned ScrollStarted.
-    virtual bool scrollBy(const gfx::Point&, const gfx::Vector2dF&) = 0;
+  // Scroll the selected layer starting at the given position. If the scroll
+  // type given to scrollBegin was a gesture, then the scroll point and delta
+  // should be in viewport (logical pixel) coordinates. Otherwise they are in
+  // scrolling layer's (logical pixel) space. 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. If no layer can be moved in the requested
+  // direction at all, then false is returned. If any layer is moved, then
+  // true is returned.
+  // Should only be called if ScrollBegin() returned ScrollStarted.
+  virtual bool ScrollBy(gfx::Point viewport_point,
+                        gfx::Vector2dF scroll_delta) = 0;
 
-    // Stop scrolling the selected layer. Should only be called if scrollBegin()
-    // returned ScrollStarted.
-    virtual void scrollEnd() = 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, gfx::Point anchor) = 0;
-    virtual void pinchGestureEnd() = 0;
+  virtual void PinchGestureBegin() = 0;
+  virtual void PinchGestureUpdate(float magnify_delta, gfx::Point anchor) = 0;
+  virtual void PinchGestureEnd() = 0;
 
-    virtual void startPageScaleAnimation(gfx::Vector2d targetOffset,
-                                         bool anchorPoint,
-                                         float pageScale,
-                                         base::TimeTicks startTime,
-                                         base::TimeDelta duration) = 0;
+  virtual void StartPageScaleAnimation(gfx::Vector2d target_offset,
+                                       bool anchor_point,
+                                       float page_scale,
+                                       base::TimeTicks start_time,
+                                       base::TimeDelta duration) = 0;
 
-    // Request another callback to InputHandler::animate().
-    virtual void scheduleAnimation() = 0;
+  // Request another callback to InputHandler::Animate().
+  virtual void ScheduleAnimation() = 0;
 
-    virtual bool haveTouchEventHandlersAt(const gfx::Point&) = 0;
+  virtual bool HaveTouchEventHandlersAt(gfx::Point viewport_point) = 0;
 
-protected:
-    InputHandlerClient() { }
-    virtual ~InputHandlerClient() { }
+ protected:
+  InputHandlerClient() {}
+  virtual ~InputHandlerClient() {}
 
-private:
-    DISALLOW_COPY_AND_ASSIGN(InputHandlerClient);
+ private:
+  DISALLOW_COPY_AND_ASSIGN(InputHandlerClient);
 };
 
 class CC_EXPORT InputHandler {
-public:
-    virtual ~InputHandler() { }
+ public:
+  virtual ~InputHandler() {}
 
-    virtual void bindToClient(InputHandlerClient*) = 0;
-    virtual void animate(base::TimeTicks time) = 0;
-    virtual void mainThreadHasStoppedFlinging() = 0;
+  virtual void BindToClient(InputHandlerClient* client) = 0;
+  virtual void Animate(base::TimeTicks time) = 0;
+  virtual void MainThreadHasStoppedFlinging() = 0;
 
-protected:
-    InputHandler() { }
+ protected:
+  InputHandler() {}
 
-private:
-    DISALLOW_COPY_AND_ASSIGN(InputHandler);
+ private:
+  DISALLOW_COPY_AND_ASSIGN(InputHandler);
 };
 
-}
+}  // namespace cc
 
 #endif  // CC_INPUT_HANDLER_H_