src/ui/wm/core/easy_resize_window_targeter.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_WM_CORE_EASY_RESIZE_WINDOW_TARGETER_H_
   6 #define UI_WM_CORE_EASY_RESIZE_WINDOW_TARGETER_H_
   7
   8 #include "ui/aura/window_targeter.h"
   9 #include "ui/gfx/geometry/insets.h"
  10 #include "ui/wm/core/wm_core_export.h"
  11
  12 namespace wm {
  13
  14 // An EventTargeter for a container window that uses a slightly larger
  15 // hit-target region for easier resize.
  16 class WM_CORE_EXPORT EasyResizeWindowTargeter : public aura::WindowTargeter {
  17  public:
  18   // |container| window is the owner of this targeter.
  19   EasyResizeWindowTargeter(aura::Window* container,
  20                            const gfx::Insets& mouse_extend,
  21                            const gfx::Insets& touch_extend);
  22
  23   virtual ~EasyResizeWindowTargeter();
  24
  25  protected:
  26   void set_mouse_extend(const gfx::Insets& mouse_extend) {
  27     mouse_extend_ = mouse_extend;
  28   }
  29
  30   void set_touch_extend(const gfx::Insets& touch_extend) {
  31     touch_extend_ = touch_extend;
  32   }
  33
  34   // aura::WindowTargeter:
  35   virtual bool EventLocationInsideBounds(
  36       aura::Window* window,
  37       const ui::LocatedEvent& event) const OVERRIDE;
  38
  39  private:
  40   // Returns true if the hit testing (EventLocationInsideBounds()) should use
  41   // the extended bounds.
  42   bool ShouldUseExtendedBounds(const aura::Window* window) const;
  43
  44   aura::Window* container_;
  45   gfx::Insets mouse_extend_;
  46   gfx::Insets touch_extend_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(EasyResizeWindowTargeter);
  49 };
  50
  51 }  // namespace wm
  52
  53 #endif  // UI_WM_CORE_EASY_RESIZE_WINDOW_TARGETER_H_