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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PDF_FADING_CONTROLS_H_
#define PDF_FADING_CONTROLS_H_
#include <list>
#include "pdf/control.h"
namespace chrome_pdf {
class FadingControls : public Control,
public ControlOwner {
public:
enum FadingState {
NONE,
FADING_IN,
FADING_OUT
};
FadingControls();
virtual ~FadingControls();
virtual bool CreateFadingControls(
uint32 id, const pp::Rect& rc, bool visible,
Control::Owner* delegate, uint8 transparency);
// Control interface.
virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc);
virtual bool HandleEvent(const pp::InputEvent& event);
virtual void OnTimerFired(uint32 timer_id);
virtual void EventCaptureReleased();
virtual void MoveBy(const pp::Point& offset, bool invalidate);
// ControlOwner interface.
virtual void OnEvent(uint32 control_id, uint32 event_id, void* data);
virtual void Invalidate(uint32 control_id, const pp::Rect& rc);
virtual uint32 ScheduleTimer(uint32 control_id, uint32 timeout_ms);
virtual void SetEventCapture(uint32 control_id, bool set_capture);
virtual void SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type);
virtual pp::Instance* GetInstance();
// FadingControls interface
// This function takes ownership of the control, and will destoy it
// when control is destroyed.
// Input control MUST be located inside FadingControls boundaries, and has
// this instance of FadingControls as a delegate.
virtual bool AddControl(Control* control);
virtual void RemoveControl(uint32 control_id);
virtual Control* GetControl(uint32 id);
virtual pp::Rect GetControlsRect();
// Expand/Shrink area which triggers inner control appearance to the left.
virtual bool ExpandLeft(int offset);
// Fade-in, then show controls for time_ms, and then fade-out. Any mouse
// event in this control area will interrupt splash mode.
virtual void Splash(uint32 time_ms);
uint8 current_transparency() const { return current_transparency_; }
private:
bool NotifyControls(const pp::InputEvent& event);
void FadeIn();
void FadeOut();
void OnFadingComplete();
void CancelSplashMode();
std::list<Control*> controls_;
FadingState state_;
uint8 current_transparency_;
uint32 fading_timer_id_;
uint32 current_capture_control_;
uint32 fading_timeout_;
uint32 alpha_shift_;
bool splash_;
uint32 splash_timeout_;
};
} // namespace chrome_pdf
#endif // PDF_FADING_CONTROLS_H_
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