#pragma src "/sys/src/libdraw" #pragma lib "libdraw.a" typedef struct Cachefont Cachefont; typedef struct Cacheinfo Cacheinfo; typedef struct Cachesubf Cachesubf; typedef struct Display Display; typedef struct Font Font; typedef struct Fontchar Fontchar; typedef struct Image Image; typedef struct Mouse Mouse; typedef struct Point Point; typedef struct Rectangle Rectangle; typedef struct RGB RGB; typedef struct Screen Screen; typedef struct Subfont Subfont; #pragma varargck type "R" Rectangle #pragma varargck type "P" Point extern int Rfmt(Fmt*); extern int Pfmt(Fmt*); enum { DOpaque = 0xFFFFFFFF, DTransparent = 0x00000000, /* only useful for allocimage, memfillcolor */ DBlack = 0x000000FF, DWhite = 0xFFFFFFFF, DRed = 0xFF0000FF, DGreen = 0x00FF00FF, DBlue = 0x0000FFFF, DCyan = 0x00FFFFFF, DMagenta = 0xFF00FFFF, DYellow = 0xFFFF00FF, DPaleyellow = 0xFFFFAAFF, DDarkyellow = 0xEEEE9EFF, DDarkgreen = 0x448844FF, DPalegreen = 0xAAFFAAFF, DMedgreen = 0x88CC88FF, DDarkblue = 0x000055FF, DPalebluegreen= 0xAAFFFFFF, DPaleblue = 0x0000BBFF, DBluegreen = 0x008888FF, DGreygreen = 0x55AAAAFF, DPalegreygreen = 0x9EEEEEFF, DYellowgreen = 0x99994CFF, DMedblue = 0x000099FF, DGreyblue = 0x005DBBFF, DPalegreyblue = 0x4993DDFF, DPurpleblue = 0x8888CCFF, DNotacolor = 0xFFFFFF00, DNofill = DNotacolor, }; enum { Displaybufsize = 8000, ICOSSCALE = 1024, Borderwidth = 4, }; enum { /* refresh methods */ Refbackup = 0, Refnone = 1, Refmesg = 2 }; #define NOREFRESH ((void*)-1) enum { /* line ends */ Endsquare = 0, Enddisc = 1, Endarrow = 2, Endmask = 0x1F }; #define ARROW(a, b, c) (Endarrow|((a)<<5)|((b)<<14)|((c)<<23)) typedef enum { /* Porter-Duff compositing operators */ Clear = 0, SinD = 8, DinS = 4, SoutD = 2, DoutS = 1, S = SinD|SoutD, SoverD = SinD|SoutD|DoutS, SatopD = SinD|DoutS, SxorD = SoutD|DoutS, D = DinS|DoutS, DoverS = DinS|DoutS|SoutD, DatopS = DinS|SoutD, DxorS = DoutS|SoutD, /* == SxorD */ Ncomp = 12, } Drawop; /* * image channel descriptors */ enum { CRed = 0, CGreen, CBlue, CGrey, CAlpha, CMap, CIgnore, NChan, }; #define __DC(type, nbits) ((((type)&15)<<4)|((nbits)&15)) #define CHAN1(a,b) __DC(a,b) #define CHAN2(a,b,c,d) (CHAN1((a),(b))<<8|__DC((c),(d))) #define CHAN3(a,b,c,d,e,f) (CHAN2((a),(b),(c),(d))<<8|__DC((e),(f))) #define CHAN4(a,b,c,d,e,f,g,h) (CHAN3((a),(b),(c),(d),(e),(f))<<8|__DC((g),(h))) #define NBITS(c) ((c)&15) #define TYPE(c) (((c)>>4)&15) enum { GREY1 = CHAN1(CGrey, 1), GREY2 = CHAN1(CGrey, 2), GREY4 = CHAN1(CGrey, 4), GREY8 = CHAN1(CGrey, 8), CMAP8 = CHAN1(CMap, 8), RGB15 = CHAN4(CIgnore, 1, CRed, 5, CGreen, 5, CBlue, 5), RGB16 = CHAN3(CRed, 5, CGreen, 6, CBlue, 5), RGB24 = CHAN3(CRed, 8, CGreen, 8, CBlue, 8), RGBA32 = CHAN4(CRed, 8, CGreen, 8, CBlue, 8, CAlpha, 8), ARGB32 = CHAN4(CAlpha, 8, CRed, 8, CGreen, 8, CBlue, 8), /* stupid VGAs */ XRGB32 = CHAN4(CIgnore, 8, CRed, 8, CGreen, 8, CBlue, 8), }; extern char* chantostr(char*, ulong); extern ulong strtochan(char*); extern int chantodepth(ulong); struct Point { int x; int y; }; struct Rectangle { Point min; Point max; }; typedef void (*Reffn)(Image*, Rectangle, void*); struct Screen { Display *display; /* display holding data */ int id; /* id of system-held Screen */ Image *image; /* unused; for reference only */ Image *fill; /* color to paint behind windows */ }; struct Display { QLock qlock; int locking; /*program is using lockdisplay */ int dirno; int fd; int reffd; int ctlfd; int imageid; int local; void (*error)(Display*, char*); char *devdir; char *windir; char oldlabel[64]; ulong dataqid; Image *white; Image *black; Image *opaque; Image *transparent; Image *image; uchar *buf; int bufsize; uchar *bufp; Font *defaultfont; Subfont *defaultsubfont; Image *windows; Image *screenimage; int _isnewdisplay; }; struct Image { Display *display; /* display holding data */ int id; /* id of system-held Image */ Rectangle r; /* rectangle in data area, local coords */ Rectangle clipr; /* clipping region */ int depth; /* number of bits per pixel */ ulong chan; int repl; /* flag: data replicates to tile clipr */ Screen *screen; /* 0 if not a window */ Image *next; /* next in list of windows */ }; struct RGB { ulong red; ulong green; ulong blue; }; /* * Subfonts * * given char c, Subfont *f, Fontchar *i, and Point p, one says * i = f->info+c; * draw(b, Rect(p.x+i->left, p.y+i->top, * p.x+i->left+((i+1)->x-i->x), p.y+i->bottom), * color, f->bits, Pt(i->x, i->top)); * p.x += i->width; * to draw characters in the specified color (itself an Image) in Image b. */ struct Fontchar { int x; /* left edge of bits */ uchar top; /* first non-zero scan-line */ uchar bottom; /* last non-zero scan-line + 1 */ char left; /* offset of baseline */ uchar width; /* width of baseline */ }; struct Subfont { char *name; short n; /* number of chars in font */ uchar height; /* height of image */ char ascent; /* top of image to baseline */ Fontchar *info; /* n+1 character descriptors */ Image *bits; /* of font */ int ref; }; enum { /* starting values */ LOG2NFCACHE = 6, NFCACHE = (1<>8)) #define BPLONG(p, v) (BPSHORT(p, (v)), BPSHORT(p+2, (v)>>16)) /* * Compressed image file parameters and helper routines */ #define NMATCH 3 /* shortest match possible */ #define NRUN (NMATCH+31) /* longest match possible */ #define NMEM 1024 /* window size */ #define NDUMP 128 /* maximum length of dump */ #define NCBLOCK 6000 /* size of compressed blocks */ extern void _twiddlecompressed(uchar*, int); extern int _compblocksize(Rectangle, int); /* XXX backwards helps; should go */ extern int log2[]; extern ulong drawld2chan[]; extern void drawsetdebug(int);