pdf/control.h

   1 // Copyright (c) 2012 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_CONTROL_H_
   6 #define PDF_CONTROL_H_
   7
   8 #include <list>
   9
  10 #include "base/basictypes.h"
  11 #include "ppapi/c/dev/pp_cursor_type_dev.h"
  12 #include "ppapi/cpp/rect.h"
  13
  14 namespace pp {
  15 class ImageData;
  16 class InputEvent;
  17 class Instance;
  18 }
  19
  20 namespace chrome_pdf {
  21
  22 const uint32 kInvalidControlId = 0;
  23
  24 class Control {
  25  public:
  26   class Owner {
  27    public:
  28     virtual ~Owner() {}
  29     virtual void OnEvent(uint32 control_id, uint32 event_id, void* data) = 0;
  30     virtual void Invalidate(uint32 control_id, const pp::Rect& rc) = 0;
  31     virtual uint32 ScheduleTimer(uint32 control_id, uint32 timeout_ms) = 0;
  32     virtual void SetEventCapture(uint32 control_id, bool set_capture) = 0;
  33     virtual void SetCursor(uint32 control_id,
  34                            PP_CursorType_Dev cursor_type) = 0;
  35     virtual pp::Instance* GetInstance() = 0;
  36   };
  37
  38   Control();
  39   virtual ~Control();
  40   virtual bool Create(uint32 id, const pp::Rect& rc,
  41                       bool visible, Owner* owner);
  42
  43   virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc) {}
  44   virtual bool HandleEvent(const pp::InputEvent& event);
  45   virtual void OnTimerFired(uint32 timer_id) {}
  46   virtual void EventCaptureReleased() {}
  47
  48   // Paint control into multiple destination rects.
  49   virtual void PaintMultipleRects(pp::ImageData* image_data,
  50                                   const std::list<pp::Rect>& rects);
  51
  52   virtual void Show(bool visible, bool invalidate);
  53   virtual void AdjustTransparency(uint8 transparency, bool invalidate);
  54   virtual void MoveBy(const pp::Point& offset, bool invalidate);
  55   virtual void SetRect(const pp::Rect& rc, bool invalidate);
  56
  57   void MoveTo(const pp::Point& origin, bool invalidate);
  58
  59   uint32 id() const { return id_; }
  60   const pp::Rect& rect() const { return rc_; }
  61   bool visible() const { return visible_; }
  62   Owner* owner() { return owner_; }
  63   uint8 transparency() const { return transparency_; }
  64
  65  private:
  66   uint32 id_;
  67   pp::Rect rc_;
  68   bool visible_;
  69   Owner* owner_;
  70   uint8 transparency_;
  71 };
  72
  73 typedef Control::Owner ControlOwner;
  74
  75 }  // namespace chrome_pdf
  76
  77 #endif  // PDF_CONTROL_H_