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