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be_base.h

/* 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.
 *
 * 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.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-13-0/backends/platform/PalmOS/Src/be_base.h $
 * $Id: be_base.h 34912 2008-11-06 15:02:50Z fingolfin $
 *
 */

#ifndef BE_BASE_H
#define BE_BASE_H

#include <time.h>

#include "PalmVersion.h"
#include "globals.h"

#include "common/scummsys.h"
#include "common/system.h"
#include "common/events.h"
#include "graphics/surface.h"

namespace Audio {
      class Mixer;
}

namespace Common {
      class SaveFileManager;
      class TimerManager;
}

enum {
      GFX_NORMAL = 0,
      GFX_WIDE,
};

// OSD key state
enum {
      kModifierNone = 0,
      kModifierCommand,
      kModifierAlt,
      kModifierCtrl,
      kModifierCount
};

// Mouse button event
enum {
      vchrMouseLeft = vchrHardKeyMax - 2,
      vchrMouseRight = vchrHardKeyMax - 1
};

// OSD resource id
#define kDrawKeyState   3000
#define kDrawNumPad           3010
#define kDrawBatLow           3020
#define kDrawFight            3030

#define computeMsecs(x) ((SysTicksPerSecond() * x) / 1000)


typedef void (*SoundProc)(void *param, byte *buf, int len);
typedef int (*TimerProc)(int interval);

typedef struct {
      UInt32 duration, nextExpiry;
      Boolean active;
      TimerProc callback;
} TimerType, *TimerPtr;

typedef struct {
      Boolean     active;
      void *proc;
      void *param;
} SoundType, *SoundPtr;

class OSystem_PalmBase : public OSystem {
private:
      virtual void int_initBackend() { }

      virtual const GraphicsMode *int_getSupportedGraphicsModes() const;
      virtual void int_updateScreen() = 0;
      virtual void int_initSize(uint w, uint h) = 0;
      virtual void int_setShakePos(int shakeOffset) { }

      virtual void extras_palette(uint8 index, uint8 r, uint8 g, uint8 b) { }
      virtual void int_quit() { }

      virtual void unload_gfx_mode() = 0;
      virtual void load_gfx_mode() = 0;

      virtual void draw_mouse() = 0;
      virtual void undraw_mouse() = 0;

      virtual bool check_event(Common::Event &event, EventPtr ev) = 0;

      virtual void timer_handler();
      void battery_handler();
      virtual void get_coordinates(EventPtr ev, Coord &x, Coord &y) = 0;
      void simulate_mouse(Common::Event &event, Int8 iHoriz, Int8 iVert, Coord *xr, Coord *yr);

      virtual void sound_handler() = 0;
      virtual bool setSoundCallback(SoundProc proc, void *param) = 0;
      virtual void clearSoundCallback() = 0;

protected:
      OSystem_PalmBase();

      virtual void draw_osd(UInt16 id, Int32 x, Int32 y, Boolean show, UInt8 color = 0);

      struct MousePos {
            int16 x,y,w,h;
      };

      TimerType _timer;
      SoundType _sound;

      Common::SaveFileManager *_saveMgr;
      Audio::Mixer *_mixerMgr;
      Common::TimerManager *_timerMgr;

      RGBColorType _currentPalette[256];
      uint _paletteDirtyStart, _paletteDirtyEnd;

      int _mode, _setMode;
      int16 _screenWidth, _screenHeight;
      Boolean _modeChanged, _gfxLoaded;
      UInt32 _screenPitch;

      PointType _screenOffset;
      struct {
            Coord w, h;
      } _screenDest;
      byte *_screenP, *_offScreenP;
      WinHandle _screenH, _offScreenH;

      int _current_shake_pos;
      int _new_shake_pos;

      Boolean _overlayVisible;
      Boolean _redawOSD, _setPalette;

      UInt32 _keyExtraMask, _keyExtraPressed, _keyExtraRepeat, _keyExtraDelay;
      struct {
            UInt32 bitUp;
            UInt32 bitDown;
            UInt32 bitLeft;
            UInt32 bitRight;
            UInt32 bitActionA;      // left mouse button
            UInt32 bitActionB;      // right mouse button
      } _keyExtra;

      bool _mouseVisible;
      bool _mouseDrawn;
      MousePos _mouseCurState;
      MousePos _mouseOldState;
      int16 _mouseHotspotX;
      int16 _mouseHotspotY;
      byte _mouseKeyColor;
      byte *_mouseDataP, *_mouseBackupP;


      bool _wasKey;
      UInt8 _lastKeyModifier;
      UInt32 _lastKeyRepeat;
      Boolean _useNumPad, _showBatLow;
      UInt32 _batCheckTicks, _batCheckLast;

      int _samplesPerSec;

public:
      void initBackend();

/*
      virtual void setFeatureState(Feature f, bool enable) {};


      bool hasFeature(Feature f);
      bool getFeatureState(Feature f);

      virtual void beginGFXTransaction();
      virtual void endGFXTransaction();

      virtual int16 getOverlayHeight();
      virtual int16 getOverlayWidth();

      virtual void setCursorPalette(const byte *colors, uint start, uint num);
      virtual void disableCursorPalette(bool disable);

      virtual void displayMessageOnOSD(const char *msg);
*/
      const GraphicsMode *getSupportedGraphicsModes() const;
      int getGraphicsMode() const;
      virtual int getDefaultGraphicsMode() const;
      virtual bool setGraphicsMode(int mode);

      void initSize(uint w, uint h);
      int16 getWidth() { return _screenWidth; }
      int16 getHeight() { return _screenHeight; }

      void setShakePos(int shakeOffset);
      virtual void copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h) = 0;
      virtual void updateScreen();
      virtual void clearScreen();

      bool showMouse(bool visible);
      void warpMouse(int x, int y);
      void setMouseCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor, int cursorTargetScale);

      virtual void showOverlay() = 0;
      virtual void hideOverlay() = 0;
      virtual void clearOverlay() = 0;
      virtual void grabOverlay(OverlayColor *buf, int pitch) = 0;
      virtual void copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h) = 0;

      void setPalette(const byte *colors, uint start, uint num);
      void grabPalette(byte *colors, uint start, uint num);
      virtual Graphics::PixelFormat getOverlayFormat() const { return Graphics::createPixelFormat<565>(); }

      bool pollEvent(Common::Event &event);

      void getTimeAndDate(struct tm &t) const;
      virtual uint32 getMillis();
      virtual void delayMillis(uint msecs);

      virtual void setTimerCallback(TimerProc callback, int interval);

      virtual MutexRef createMutex() { return NULL; }
      virtual void lockMutex(MutexRef mutex) {}
      virtual void unlockMutex(MutexRef mutex) {}
      virtual void deleteMutex(MutexRef mutex) {}

      int getOutputSampleRate() const { return _samplesPerSec; }
      virtual Audio::Mixer *getMixer();

      void quit();
      virtual void setWindowCaption(const char *caption) = 0;

      Common::SaveFileManager *getSavefileManager();
      Common::TimerManager *getTimerManager();

      virtual Common::SeekableReadStream *openConfigFileForReading();
      virtual Common::WriteStream *openConfigFileForWriting();
};

#endif

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