ppapi/cpp/dev/widget_client_dev.h

   1 // Copyright (c) 2010 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 PPAPI_CPP_DEV_WIDGET_CLIENT_DEV_H_
   6 #define PPAPI_CPP_DEV_WIDGET_CLIENT_DEV_H_
   7
   8 #include "ppapi/c/pp_stdint.h"
   9 #include "ppapi/cpp/instance_handle.h"
  10
  11 namespace pp {
  12
  13 class Instance;
  14 class Rect;
  15 class Scrollbar_Dev;
  16 class Widget_Dev;
  17
  18 // This class provides a C++ interface for callbacks related to widgets. You
  19 // would normally use multiple inheritance to derive from this class in your
  20 // instance.
  21 class WidgetClient_Dev {
  22  public:
  23   explicit WidgetClient_Dev(Instance* instance);
  24   virtual ~WidgetClient_Dev();
  25
  26   /**
  27    * Notification that the given widget should be repainted. This is the
  28    * implementation for PPP_Widget_Dev.
  29    */
  30   virtual void InvalidateWidget(Widget_Dev widget, const Rect& dirty_rect) = 0;
  31
  32   /**
  33    * Notification that the given scrollbar should change value. This is the
  34    * implementation for PPP_Scrollbar_Dev.
  35    */
  36   virtual void ScrollbarValueChanged(Scrollbar_Dev scrollbar,
  37                                      uint32_t value) = 0;
  38
  39   /**
  40    * Notification that the given scrollbar's overlay type has changed. This is
  41    * the implementation for PPP_Scrollbar_Dev.
  42    */
  43   virtual void ScrollbarOverlayChanged(Scrollbar_Dev scrollbar,
  44                                        bool type) = 0;
  45
  46  private:
  47   InstanceHandle associated_instance_;
  48 };
  49
  50 }  // namespace pp
  51
  52 #endif  // PPAPI_CPP_DEV_WIDGET_CLIENT_DEV_H_