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| 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_FADING_CONTROLS_H_ | |
| 6 #define PDF_FADING_CONTROLS_H_ | |
| 7 | |
| 8 #include <list> | |
| 9 | |
| 10 #include "pdf/control.h" | |
| 11 | |
| 12 namespace chrome_pdf { | |
| 13 | |
| 14 class FadingControls : public Control, | |
| 15 public ControlOwner { | |
| 16 public: | |
| 17 enum FadingState { | |
| 18 NONE, | |
| 19 FADING_IN, | |
| 20 FADING_OUT | |
| 21 }; | |
| 22 | |
| 23 FadingControls(); | |
| 24 virtual ~FadingControls(); | |
| 25 virtual bool CreateFadingControls( | |
| 26 uint32 id, const pp::Rect& rc, bool visible, | |
| 27 Control::Owner* delegate, uint8 transparency); | |
| 28 | |
| 29 // Control interface. | |
| 30 virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc); | |
| 31 virtual bool HandleEvent(const pp::InputEvent& event); | |
| 32 virtual void OnTimerFired(uint32 timer_id); | |
| 33 virtual void EventCaptureReleased(); | |
| 34 virtual void MoveBy(const pp::Point& offset, bool invalidate); | |
| 35 | |
| 36 // ControlOwner interface. | |
| 37 virtual void OnEvent(uint32 control_id, uint32 event_id, void* data); | |
| 38 virtual void Invalidate(uint32 control_id, const pp::Rect& rc); | |
| 39 virtual uint32 ScheduleTimer(uint32 control_id, uint32 timeout_ms); | |
| 40 virtual void SetEventCapture(uint32 control_id, bool set_capture); | |
| 41 virtual void SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type); | |
| 42 virtual pp::Instance* GetInstance(); | |
| 43 | |
| 44 // FadingControls interface | |
| 45 // This function takes ownership of the control, and will destoy it | |
| 46 // when control is destroyed. | |
| 47 // Input control MUST be located inside FadingControls boundaries, and has | |
| 48 // this instance of FadingControls as a delegate. | |
| 49 virtual bool AddControl(Control* control); | |
| 50 virtual void RemoveControl(uint32 control_id); | |
| 51 virtual Control* GetControl(uint32 id); | |
| 52 virtual pp::Rect GetControlsRect(); | |
| 53 | |
| 54 // Expand/Shrink area which triggers inner control appearance to the left. | |
| 55 virtual bool ExpandLeft(int offset); | |
| 56 | |
| 57 // Fade-in, then show controls for time_ms, and then fade-out. Any mouse | |
| 58 // event in this control area will interrupt splash mode. | |
| 59 virtual void Splash(uint32 time_ms); | |
| 60 | |
| 61 uint8 current_transparency() const { return current_transparency_; } | |
| 62 | |
| 63 private: | |
| 64 bool NotifyControls(const pp::InputEvent& event); | |
| 65 void FadeIn(); | |
| 66 void FadeOut(); | |
| 67 void OnFadingComplete(); | |
| 68 void CancelSplashMode(); | |
| 69 | |
| 70 std::list<Control*> controls_; | |
| 71 FadingState state_; | |
| 72 uint8 current_transparency_; | |
| 73 uint32 fading_timer_id_; | |
| 74 uint32 current_capture_control_; | |
| 75 uint32 fading_timeout_; | |
| 76 uint32 alpha_shift_; | |
| 77 bool splash_; | |
| 78 uint32 splash_timeout_; | |
| 79 }; | |
| 80 | |
| 81 } // namespace chrome_pdf | |
| 82 | |
| 83 #endif // PDF_FADING_CONTROLS_H_ | |
| 84 | |
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