ui/views/controls/scrollbar/base_scroll_bar_button.h

   1 // Copyright (c) 2011 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_VIEWS_CONTROLS_SCROLLBAR_BASE_SCROLL_BAR_BUTTON_H_
   6 #define UI_VIEWS_CONTROLS_SCROLLBAR_BASE_SCROLL_BAR_BUTTON_H_
   7
   8 #include "ui/views/controls/button/custom_button.h"
   9
  10 #include "ui/views/repeat_controller.h"
  11
  12 #if defined(OS_LINUX)
  13 #include "ui/gfx/screen.h"
  14 #endif
  15
  16 namespace views {
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //
  20 // ScrollBarButton
  21 //
  22 //  A button that activates on mouse pressed rather than released, and that
  23 //  continues to fire the clicked action as the mouse button remains pressed
  24 //  down on the button.
  25 //
  26 ///////////////////////////////////////////////////////////////////////////////
  27 class VIEWS_EXPORT BaseScrollBarButton : public CustomButton {
  28  public:
  29   explicit BaseScrollBarButton(ButtonListener* listener);
  30   virtual ~BaseScrollBarButton();
  31
  32  protected:
  33   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
  34   virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
  35   virtual void OnMouseCaptureLost() OVERRIDE;
  36
  37  private:
  38   void RepeaterNotifyClick();
  39
  40   // The repeat controller that we use to repeatedly click the button when the
  41   // mouse button is down.
  42   RepeatController repeater_;
  43
  44   DISALLOW_COPY_AND_ASSIGN(BaseScrollBarButton);
  45 };
  46
  47 }  // namespace views
  48
  49 #endif  // UI_VIEWS_CONTROLS_SCROLLBAR_BASE_SCROLL_BAR_BUTTON_H_