Support for Adaptive Handle Orientation

ui/touch_selection/touch_selection_controller.h

 // Copyright 2014 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 UI_TOUCH_SELECTION_TOUCH_SELECTION_CONTROLLER_H_
 #define UI_TOUCH_SELECTION_TOUCH_SELECTION_CONTROLLER_H_
 
 #include "ui/base/touch/selection_bound.h"
 #include "ui/gfx/geometry/point_f.h"
 #include "ui/gfx/geometry/rect_f.h"
@@ skipping 31 matching lines @@
                            float tap_slop,
                            bool show_on_tap_for_empty_editable);
   ~TouchSelectionController() override;
 
   // To be called when the selection bounds have changed.
   // Note that such updates will trigger handle updates only if preceded
   // by an appropriate call to allow automatic showing.
   void OnSelectionBoundsChanged(const SelectionBound& start,
                                 const SelectionBound& end);
 
+  // To be called when the viewport size has been changed. This is used for
+  // setting the state of the handles.
+  void OnViewportChanged(const gfx::RectF viewport_rect);
+
   // Allows touch-dragging of the handle.
   // Returns true iff the event was consumed, in which case the caller should
   // cease further handling of the event.
   bool WillHandleTouchEvent(const MotionEvent& event);
 
   // To be called before forwarding a tap event. This allows automatically
   // showing the insertion handle from subsequent bounds changes.
   void OnTapEvent();
 
   // To be called before forwarding a longpress event. This allows automatically
@@ skipping 79 matching lines @@
   scoped_ptr<TouchHandle> start_selection_handle_;
   scoped_ptr<TouchHandle> end_selection_handle_;
   bool is_selection_active_;
   bool activate_selection_automatically_;
 
   bool selection_empty_;
   bool selection_editable_;
 
   bool temporarily_hidden_;
 
+  gfx::RectF viewport_rect_;
+  bool viewport_size_changed_;
+
   base::TimeTicks selection_start_time_;
   // Whether a selection handle was dragged during the current 'selection
   // session' - i.e. since the current selection has been activated.
   bool selection_handle_dragged_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchSelectionController);
 };
 
 }  // namespace ui
 
 #endif  // UI_TOUCH_SELECTION_TOUCH_SELECTION_CONTROLLER_H_