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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* Additional copyright for this file:
* Copyright (C) 1995-1997 Presto Studios, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef PEGASUS_FADER_H
#define PEGASUS_FADER_H
#include "pegasus/elements.h"
#include "pegasus/timers.h"
namespace Pegasus {
class Fader;
class FaderMoveSpec {
friend class Fader;
public:
FaderMoveSpec() {
_faderScale = kDefaultTimeScale;
_numKnots = 0;
}
FaderMoveSpec(const TimeScale scale) {
_faderScale = scale;
_numKnots = 0;
}
void setFaderScale(const TimeScale scale) { _faderScale = scale; }
TimeScale getFaderScale() const { return _faderScale; }
void makeOneKnotFaderSpec(const int32);
void makeTwoKnotFaderSpec(const TimeScale, const TimeValue, const int32, const TimeValue, const int32);
void insertFaderKnot(const TimeValue, const int32);
uint32 getNumKnots() const { return _numKnots; }
TimeValue getNthKnotTime(const uint32 index) const { return _knots[index].knotTime; }
int32 getNthKnotValue(const uint32 index) const { return _knots[index].knotValue; }
protected:
struct FaderKnot {
TimeValue knotTime;
int32 knotValue;
};
TimeScale _faderScale;
uint32 _numKnots;
static const uint32 kMaxFaderKnots = 20;
FaderKnot _knots[kMaxFaderKnots];
};
class Fader : public IdlerTimeBase {
public:
Fader();
virtual ~Fader() {}
virtual void setFaderValue(const int32);
int32 getFaderValue() const { return _currentValue; }
virtual void startFader(const FaderMoveSpec &);
virtual void startFaderSync(const FaderMoveSpec &);
virtual void loopFader(const FaderMoveSpec &);
virtual void stopFader();
virtual bool isFading() { return isRunning(); }
void pauseFader();
void continueFader();
void getCurrentFaderMove(FaderMoveSpec &spec) { spec = _currentFaderMove; }
protected:
bool initFaderMove(const FaderMoveSpec &);
virtual void timeChanged(const TimeValue);
int32 _currentValue;
FaderMoveSpec _currentFaderMove;
};
class FaderAnimation : public DisplayElement, public Fader {
public:
FaderAnimation(const tDisplayElementID id) : DisplayElement(id) {}
virtual ~FaderAnimation() {}
void setFaderValue(const int32);
};
class Sound;
class SoundFader : public Fader {
friend class Sound;
public:
SoundFader();
virtual ~SoundFader() {}
void setFaderValue(const int32);
void setMasterVolume(const uint16);
uint16 getMasterVolume() const { return _masterVolume; }
protected:
void attachSound(Sound *);
Sound *_sound;
uint16 _masterVolume;
};
} // End of namespace Pegasus
#endif
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