device.h

ecos下的gui开发源代码

/* note: don't use palette indices if the palette may
 * be reloaded.  Use the RGB values instead.
 */
#define BLACK		PALINDEX(0)		/*   0,   0,   0*/
#define BLUE		PALINDEX(1)
#define GREEN		PALINDEX(2)
#define CYAN		PALINDEX(3)
#define RED		PALINDEX(4)
#define MAGENTA		PALINDEX(5)
#define BROWN		PALINDEX(6)
#define LTGRAY		PALINDEX(7)		/* 192, 192, 192*/
#define GRAY		PALINDEX(8)		/* 128, 128, 128*/
#define LTBLUE		PALINDEX(9)
#define LTGREEN		PALINDEX(10)
#define LTCYAN		PALINDEX(11)
#define LTRED		PALINDEX(12)
#define LTMAGENTA	PALINDEX(13)
#define YELLOW		PALINDEX(14)
#define WHITE		PALINDEX(15)		/* 255, 255, 255*/
#endif

/* GdMakePaletteConversionTable bLoadType types*/
#define LOADPALETTE	1	/* load image palette into system palette*/
#define MERGEPALETTE	2	/* merge image palette into system palette*/

/* entry points*/

/* devdraw.c*/
PSD	GdOpenScreen(void);
void	GdCloseScreen(PSD psd);
int	GdSetPortraitMode(PSD psd, int portraitmode);
int	GdSetMode(int mode);
MWBOOL	GdSetUseBackground(MWBOOL flag);
MWPIXELVAL GdSetForegroundPixelVal(PSD psd, MWPIXELVAL fg);
MWPIXELVAL GdSetBackgroundPixelVal(PSD psd, MWPIXELVAL bg);
MWPIXELVAL GdSetForegroundColor(PSD psd, MWCOLORVAL fg);
MWPIXELVAL GdSetBackgroundColor(PSD psd, MWCOLORVAL bg);

void	GdResetPalette(void);
void	GdSetPalette(PSD psd,int first, int count, MWPALENTRY *palette);
int	GdGetPalette(PSD psd,int first, int count, MWPALENTRY *palette);
MWCOLORVAL GdGetColorRGB(PSD psd, MWPIXELVAL pixel);
MWPIXELVAL GdFindColor(PSD psd, MWCOLORVAL c);
MWPIXELVAL GdFindNearestColor(MWPALENTRY *pal, int size, MWCOLORVAL cr);
int	GdCaptureScreen(char *path);
void	GdGetScreenInfo(PSD psd,PMWSCREENINFO psi);
void	GdPoint(PSD psd,MWCOORD x, MWCOORD y);
void	GdLine(PSD psd,MWCOORD x1,MWCOORD y1,MWCOORD x2,MWCOORD y2,
		MWBOOL bDrawLastPoint);
void	GdRect(PSD psd,MWCOORD x, MWCOORD y, MWCOORD width, MWCOORD height);
void	GdFillRect(PSD psd,MWCOORD x, MWCOORD y, MWCOORD width, MWCOORD height);
void	GdBitmap(PSD psd,MWCOORD x,MWCOORD y,MWCOORD width,MWCOORD height,
		const MWIMAGEBITS *imagebits);
MWBOOL	GdColorInPalette(MWCOLORVAL cr,MWPALENTRY *palette,int palsize);
void	GdMakePaletteConversionTable(PSD psd,MWPALENTRY *palette,int palsize,
		MWPIXELVAL *convtable,int fLoadType);
void	GdDrawImage(PSD psd,MWCOORD x, MWCOORD y, PMWIMAGEHDR pimage);
void	GdPoly(PSD psd,int count, MWPOINT *points);
void	GdFillPoly(PSD psd,int count, MWPOINT *points);
void	GdReadArea(PSD psd,MWCOORD x,MWCOORD y,MWCOORD width,MWCOORD height,
		MWPIXELVAL *pixels);
void	GdArea(PSD psd,MWCOORD x,MWCOORD y,MWCOORD width,MWCOORD height,
		void *pixels, int pixtype);
void	GdDrawAreaInternal(PSD psd, driver_gc_t * gc, int op);
void	GdTranslateArea(MWCOORD width, MWCOORD height, void *in, int inpixtype,
		MWCOORD inpitch, void *out, int outpixtype, int outpitch);
void	GdCopyArea(PSD psd,MWCOORD srcx,MWCOORD srcy,MWCOORD width,
		MWCOORD height, MWCOORD destx, MWCOORD desty);
void	GdBlit(PSD dstpsd, MWCOORD dstx, MWCOORD dsty, MWCOORD width,
		MWCOORD height,PSD srcpsd,MWCOORD srcx,MWCOORD srcy,long rop);
void	GdStretchBlit(PSD dstpsd, MWCOORD dstx, MWCOORD dsty, MWCOORD dstw,
		MWCOORD dsth, PSD srcpsd, MWCOORD srcx, MWCOORD srcy,
		MWCOORD srcw, MWCOORD srch, long rop);
void	GdStretchBlitEx(PSD dstpsd, MWCOORD d1_x, MWCOORD d1_y, MWCOORD d2_x,
		MWCOORD d2_y, PSD srcpsd, MWCOORD s1_x, MWCOORD s1_y,
		MWCOORD s2_x, MWCOORD s2_y, long rop);
int	GdCalcMemGCAlloc(PSD psd, unsigned int width, unsigned int height,
		int planes, int bpp, int *size, int *linelen);
void	drawbitmap(PSD psd, MWCOORD x, MWCOORD y, MWCOORD width, MWCOORD height,
		const MWIMAGEBITS *imagebits);
void	drawpoint(PSD psd, MWCOORD x, MWCOORD y);
void	drawrow(PSD psd, MWCOORD x1, MWCOORD x2, MWCOORD y);
extern SCREENDEVICE scrdev;


/* devarc.c*/
/* requires float*/
void	GdArcAngle(PSD psd, MWCOORD x0, MWCOORD y0, MWCOORD rx, MWCOORD ry,
		MWCOORD angle1, MWCOORD angle2, int type);
/* integer only*/
void	GdArc(PSD psd, MWCOORD x0, MWCOORD y0, MWCOORD rx, MWCOORD ry,
		MWCOORD ax, MWCOORD ay, MWCOORD bx, MWCOORD by, int type);
void	GdEllipse(PSD psd,MWCOORD x, MWCOORD y, MWCOORD rx, MWCOORD ry,
		MWBOOL fill);

/* devfont.c*/
void	GdClearFontList(void);
int	GdAddFont(char *fndry, char *family, char *fontname, PMWLOGFONT lf,
		  unsigned int flags);
PMWFONT	GdSetFont(PMWFONT pfont);
PMWFONT GdCreateFont(PSD psd, const char *name, MWCOORD height,
		const PMWLOGFONT plogfont);
MWCOORD	GdSetFontSize(PMWFONT pfont, MWCOORD fontsize);
void GdGetFontList(MWFONTLIST ***list, int *num);
void GdFreeFontList(MWFONTLIST ***list, int num);
int	GdSetFontRotation(PMWFONT pfont, int tenthdegrees);
int	GdSetFontAttr(PMWFONT pfont, int setflags, int clrflags);
void	GdDestroyFont(PMWFONT pfont);
MWBOOL	GdGetFontInfo(PMWFONT pfont, PMWFONTINFO pfontinfo);
int	GdConvertEncoding(const void *istr, MWTEXTFLAGS iflags, int cc, void *ostr,
		MWTEXTFLAGS oflags);
void	GdGetTextSize(PMWFONT pfont, const void *str, int cc, MWCOORD *pwidth,
		MWCOORD *pheight, MWCOORD *pbase, MWTEXTFLAGS flags);
int	GdGetTextSizeEx(PMWFONT pfont, const void *str, int cc,
		int nMaxExtent, int *lpnFit, int *alpDx, MWCOORD *pwidth,
		MWCOORD *pheight, MWCOORD *pbase, MWTEXTFLAGS flags);	
void	GdText(PSD psd,MWCOORD x,MWCOORD y,const void *str,int count,
		MWTEXTFLAGS flags);
PMWFONT	GdCreateFontFromBuffer(PSD psd, const unsigned char *buffer,
		unsigned length, const char *format, MWCOORD height);
PMWFONT	GdDuplicateFont(PSD psd, PMWFONT psrcfont, MWCOORD fontsize);

/* devclip1.c*/
void 	GdSetClipRects(PSD psd,int count,MWCLIPRECT *table);
MWBOOL	GdClipPoint(PSD psd,MWCOORD x,MWCOORD y);
int	GdClipArea(PSD psd,MWCOORD x1, MWCOORD y1, MWCOORD x2, MWCOORD y2);
extern MWCOORD clipminx, clipminy, clipmaxx, clipmaxy;

/* devclip2.c*/
void	GdSetClipRegion(PSD psd, MWCLIPREGION *reg);

/* devrgn.c - multi-rectangle region entry points*/
MWBOOL GdPtInRegion(MWCLIPREGION *rgn, MWCOORD x, MWCOORD y);
int    GdRectInRegion(MWCLIPREGION *rgn, const MWRECT *rect);
MWBOOL GdEqualRegion(MWCLIPREGION *r1, MWCLIPREGION *r2);
MWBOOL GdEmptyRegion(MWCLIPREGION *rgn);
MWCLIPREGION *GdAllocRegion(void);
MWCLIPREGION *GdAllocRectRegion(MWCOORD left,MWCOORD top,MWCOORD right,MWCOORD bottom);
MWCLIPREGION *GdAllocRectRegionIndirect(MWRECT *prc);
void GdSetRectRegion(MWCLIPREGION *rgn, MWCOORD left, MWCOORD top,
		MWCOORD right, MWCOORD bottom);
void GdSetRectRegionIndirect(MWCLIPREGION *rgn, MWRECT *prc);
void GdDestroyRegion(MWCLIPREGION *rgn);
void GdOffsetRegion(MWCLIPREGION *rgn, MWCOORD x, MWCOORD y);
int  GdGetRegionBox(MWCLIPREGION *rgn, MWRECT *prc);
void GdUnionRectWithRegion(const MWRECT *rect, MWCLIPREGION *rgn);
void GdSubtractRectFromRegion(const MWRECT *rect, MWCLIPREGION *rgn);
void GdCopyRegion(MWCLIPREGION *d, MWCLIPREGION *s);
void GdIntersectRegion(MWCLIPREGION *d, MWCLIPREGION *s1, MWCLIPREGION *s2);
void GdUnionRegion(MWCLIPREGION *d, MWCLIPREGION *s1, MWCLIPREGION *s2);
void GdSubtractRegion(MWCLIPREGION *d, MWCLIPREGION *s1, MWCLIPREGION *s2);
void GdXorRegion(MWCLIPREGION *d, MWCLIPREGION *s1, MWCLIPREGION *s2);
MWCLIPREGION *GdAllocBitmapRegion(MWIMAGEBITS *bitmap, MWCOORD width, MWCOORD height);

/* devrgn2.c*/
MWCLIPREGION *GdAllocPolygonRegion(MWPOINT *points, int count, int mode);
MWCLIPREGION *GdAllocPolyPolygonRegion(MWPOINT *points, int *count,
		int nbpolygons, int mode);

/* devmouse.c*/
int	GdOpenMouse(void);
void	GdCloseMouse(void);
void	GdGetButtonInfo(int *buttons);
void	GdRestrictMouse(MWCOORD newminx,MWCOORD newminy,MWCOORD newmaxx,
		MWCOORD newmaxy);
void	GdSetAccelMouse(int newthresh, int newscale);
void	GdMoveMouse(MWCOORD newx, MWCOORD newy);
int	GdReadMouse(MWCOORD *px, MWCOORD *py, int *pb);
void	GdMoveCursor(MWCOORD x, MWCOORD y);
MWBOOL	GdGetCursorPos(MWCOORD *px, MWCOORD *py);
void	GdSetCursor(PMWCURSOR pcursor);
int 	GdShowCursor(PSD psd);
int 	GdHideCursor(PSD psd);
void	GdCheckCursor(PSD psd,MWCOORD x1,MWCOORD y1,MWCOORD x2,MWCOORD y2);
void 	GdFixCursor(PSD psd);
void    GdSetTransform(MWTRANSFORM *);

extern MOUSEDEVICE mousedev;

/* devkbd.c*/
int  	GdOpenKeyboard(void);
void 	GdCloseKeyboard(void);
void 	GdGetModifierInfo(MWKEYMOD *modifiers, MWKEYMOD *curmodifiers);
int  	GdReadKeyboard(MWKEY *buf, MWKEYMOD *modifiers, MWSCANCODE *scancode);
extern KBDDEVICE kbddev;

#ifdef MW_FEATURE_TWO_KEYBOARDS
int  	GdOpenKeyboard2(void);
extern KBDDEVICE kbddev2;
#endif

/* devimage.c */
#if MW_FEATURE_IMAGES
int	GdLoadImageFromBuffer(PSD psd, void *buffer, int size, int flags);
void	GdDrawImageFromBuffer(PSD psd, MWCOORD x, MWCOORD y, MWCOORD width,
		 MWCOORD height, void *buffer, int size, int flags);
void	GdDrawImageFromFile(PSD psd, MWCOORD x, MWCOORD y, MWCOORD width,
		MWCOORD height, char *path, int flags);
int	GdLoadImageFromFile(PSD psd, char *path, int flags);
void	GdDrawImageToFit(PSD psd, MWCOORD x, MWCOORD y, MWCOORD width,
		MWCOORD height, int id);
void	GdFreeImage(int id);
MWBOOL	GdGetImageInfo(int id, PMWIMAGEINFO pii);
void	GdStretchImage(PMWIMAGEHDR src, MWCLIPRECT *srcrect, PMWIMAGEHDR dst,
		MWCLIPRECT *dstrect);
void	GdComputeImagePitch(int bpp, int width, int *pitch, int *bytesperpixel);

/* Buffered input functions to replace stdio functions*/
typedef struct {  /* structure for reading images from buffer   */
	unsigned char *start;	/* The pointer to the beginning of the buffer */
	unsigned long offset;	/* The current offset within the buffer       */
	unsigned long size;	/* The total size of the buffer               */
} buffer_t;
void	GdImageBufferInit(buffer_t *buffer, void *startdata, int size);
void	GdImageBufferSeekTo(buffer_t *buffer, unsigned long offset);
int	GdImageBufferRead(buffer_t *buffer, void *dest, unsigned long size);
int	GdImageBufferGetChar(buffer_t *buffer);
char *	GdImageBufferGetString(buffer_t *buffer, char *dest, unsigned int size);
int	GdImageBufferEOF(buffer_t *buffer);

/* individual decoders*/
#ifdef HAVE_BMP_SUPPORT
int	GdDecodeBMP(buffer_t *src, PMWIMAGEHDR pimage);
#endif
#ifdef HAVE_JPEG_SUPPORT
int	GdDecodeJPEG(buffer_t *src, PMWIMAGEHDR pimage, PSD psd, MWBOOL fast_grayscale);
#endif
#ifdef HAVE_PNG_SUPPORT
int	GdDecodePNG(buffer_t *src, PMWIMAGEHDR pimage);
#endif
#ifdef HAVE_GIF_SUPPORT
int	GdDecodeGIF(buffer_t *src, PMWIMAGEHDR pimage);
#endif
#ifdef HAVE_PNM_SUPPORT
int	GdDecodePNM(buffer_t *src, PMWIMAGEHDR pimage);
#endif
#ifdef HAVE_XPM_SUPPORT
int	GdDecodeXPM(buffer_t *src, PMWIMAGEHDR pimage, PSD psd);
#endif
#ifdef HAVE_TIFF_SUPPORT
int	GdDecodeTIFF(char *path, PMWIMAGEHDR pimage);
#endif
#endif /* MW_FEATURE_IMAGES */

/* devlist.c*/
/* field offset*/
#define MWITEM_OFFSET(type, field)    ((long)&(((type *)0)->field))

void * 	GdItemAlloc(unsigned int size);
void	GdListAdd(PMWLISTHEAD pHead,PMWLIST pItem);
void	GdListInsert(PMWLISTHEAD pHead,PMWLIST pItem);
void	GdListRemove(PMWLISTHEAD pHead,PMWLIST pItem);
#define GdItemNew(type)	((type *)GdItemAlloc(sizeof(type)))
#define GdItemFree(ptr)	free((void *)ptr)

/* devstipple.c */
void	GdSetDash(unsigned long *mask, int *count);
void	GdSetStippleBitmap(MWIMAGEBITS *stipple, MWCOORD width, MWCOORD height);
void	GdSetTSOffset(int xoff, int yoff);
int	GdSetFillMode(int mode);
void	GdSetTilePixmap(PSD src, MWCOORD width, MWCOORD height);
void	ts_drawpoint(PSD psd, MWCOORD x, MWCOORD y);
void	ts_drawrow(PSD psd, MWCOORD x1, MWCOORD x2,  MWCOORD y);
void	ts_fillrect(PSD psd, MWCOORD x, MWCOORD y, MWCOORD w, MWCOORD h);
void	set_ts_origin(int x, int y);

/* return base item address from list ptr*/
#define GdItemAddr(p,type,list)	((type *)((long)p - MWITEM_OFFSET(type,list)))

#if MW_FEATURE_TIMERS
#include <sys/time.h>

typedef void (*MWTIMERCB)(void *);

#define  MWTIMER_ONESHOT         0 
#define  MWTIMER_PERIODIC        1

typedef struct mw_timer MWTIMER;
struct mw_timer {
	struct timeval	timeout;
	MWTIMERCB	callback;
	void		*arg;
	MWTIMER		*next;
	MWTIMER		*prev;
    int         type;     /* MWTIMER_ONESHOT or MWTIMER_PERIODIC */
    MWTIMEOUT   period;
};

MWTIMER		*GdAddTimer(MWTIMEOUT timeout, MWTIMERCB callback, void *arg);
MWTIMER         *GdAddPeriodicTimer(MWTIMEOUT timeout, MWTIMERCB callback, void *arg);
void		GdDestroyTimer(MWTIMER *timer);
MWTIMER		*GdFindTimer(void *arg);
MWBOOL		GdGetNextTimeout(struct timeval *tv, MWTIMEOUT timeout);
MWBOOL		GdTimeout(void);

#endif /* MW_FEATURE_TIMERS */

/* error.c*/
int	GdError(const char *format, ...);
int	GdErrorNull(const char *format, ...);  /* doesn't print msgs */

#if USE_ALLOCA
/* alloca() is available, so use it for better performance */
#define ALLOCA(size)	alloca(size)
#define FREEA(pmem)
#else
/* no alloca(), so use malloc()/free() instead */
#define ALLOCA(size)	malloc(size)
#define FREEA(pmem)	free(pmem)
#endif

/* no assert() in MSDOS or ELKS...*/
#if MSDOS | ELKS
#undef assert
#define assert(x)
#endif

/* RTEMS requires rtems_main()*/
#if __rtems__
#define main	rtems_main
#endif

#if !_MINIX
#ifndef __rtems__
#define HAVESELECT	1	/* has select system call*/
#endif
#endif

#endif /*_DEVICE_H*/