pdf/button.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 PDF_BUTTON_H_
   6 #define PDF_BUTTON_H_
   7
   8 #include "pdf/control.h"
   9 #include "ppapi/cpp/image_data.h"
  10 #include "ppapi/cpp/rect.h"
  11
  12 namespace chrome_pdf {
  13
  14 class Button : public Control {
  15  public:
  16   enum ButtonEventIds {
  17     EVENT_ID_BUTTON_CLICKED,
  18     EVENT_ID_BUTTON_STATE_CHANGED,
  19   };
  20
  21   enum ButtonStyle {
  22     BUTTON_CLICKABLE,
  23     BUTTON_STATE
  24   };
  25
  26   enum ButtonState {
  27     BUTTON_NORMAL,
  28     BUTTON_HIGHLIGHTED,
  29     BUTTON_PRESSED,
  30     BUTTON_PRESSED_STICKY,
  31   };
  32
  33   Button();
  34   virtual ~Button();
  35   virtual bool CreateButton(uint32 id,
  36                             const pp::Point& origin,
  37                             bool visible,
  38                             Control::Owner* delegate,
  39                             ButtonStyle style,
  40                             const pp::ImageData& face_normal,
  41                             const pp::ImageData& face_highlighted,
  42                             const pp::ImageData& face_pressed);
  43
  44   virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc);
  45   virtual bool HandleEvent(const pp::InputEvent& event);
  46   virtual void OnEventCaptureReleased();
  47   virtual void Show(bool visible, bool invalidate);
  48   virtual void AdjustTransparency(uint8 transparency, bool invalidate);
  49
  50   ButtonState state() const { return state_; }
  51   bool IsPressed() const { return state() == BUTTON_PRESSED_STICKY; }
  52   void SetPressedState(bool pressed);
  53
  54  private:
  55   void OnButtonClicked();
  56
  57   const pp::ImageData& GetCurrentImage();
  58   void ChangeState(ButtonState new_state, bool force);
  59
  60   ButtonStyle style_;
  61   ButtonState state_;
  62   bool is_pressed_;
  63
  64   pp::ImageData normal_;
  65   pp::ImageData highlighted_;
  66   pp::ImageData pressed_;
  67 };
  68
  69 }  // namespace chrome_pdf
  70
  71 #endif  // PDF_BUTTON_H_