ref: 1af2546e96fa96ec5341026dd509c9e4ed54c6db
dir: /sys/include/draw.h/
#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 incomplete Mouse #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), BGR24 = CHAN3(CBlue, 8, CGreen, 8, CRed, 8), ABGR32 = CHAN4(CAlpha, 8, CBlue, 8, CGreen, 8, CRed, 8), XBGR32 = CHAN4(CIgnore, 8, CBlue, 8, CGreen, 8, CRed, 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<<LOG2NFCACHE), /* #chars cached */ NFLOOK = 5, /* #chars to scan in cache */ NFSUBF = 2, /* #subfonts to cache */ /* max value */ MAXFCACHE = 1024+NFLOOK, /* upper limit */ MAXSUBF = 50, /* generous upper limit */ /* deltas */ DSUBF = 4, /* expiry ages */ SUBFAGE = 10000, CACHEAGE = 10000 }; struct Cachefont { Rune min; /* lowest rune value to be taken from subfont */ Rune max; /* highest rune value+1 to be taken from subfont */ int offset; /* position in subfont of character at min */ char *name; /* stored in font */ char *subfontname; /* to access subfont */ }; struct Cacheinfo { ushort x; /* left edge of bits */ uchar width; /* width of baseline */ schar left; /* offset of baseline */ Rune value; /* value of character at this slot in cache */ ushort age; }; struct Cachesubf { ulong age; /* for replacement */ Cachefont *cf; /* font info that owns us */ Subfont *f; /* attached subfont */ }; struct Font { char *name; Display *display; short height; /* max height of image, interline spacing */ short ascent; /* top of image to baseline */ short width; /* widest so far; used in caching only */ short nsub; /* number of subfonts */ ulong age; /* increasing counter; used for LRU */ int maxdepth; /* maximum depth of all loaded subfonts */ int ncache; /* size of cache */ int nsubf; /* size of subfont list */ Cacheinfo *cache; Cachesubf *subf; Cachefont **sub; /* as read from file */ Image *cacheimage; }; #define Dx(r) ((r).max.x-(r).min.x) #define Dy(r) ((r).max.y-(r).min.y) /* * One of a kind */ extern int mousescrollsize(int); /* * Image management */ extern Image* _allocimage(Image*, Display*, Rectangle, ulong, int, ulong, int, int); extern Image* allocimage(Display*, Rectangle, ulong, int, ulong); extern uchar* bufimage(Display*, int); extern int bytesperline(Rectangle, int); extern void closedisplay(Display*); extern void drawerror(Display*, char*); extern int flushimage(Display*, int); extern int freeimage(Image*); extern int _freeimage1(Image*); extern int geninitdraw(char*, void(*)(Display*, char*), char*, char*, char*, int); extern int initdraw(void(*)(Display*, char*), char*, char*); extern int newwindow(char*); extern Display* initdisplay(char*, char*, void(*)(Display*, char*)); extern int loadimage(Image*, Rectangle, uchar*, int); extern int cloadimage(Image*, Rectangle, uchar*, int); extern int getwindow(Display*, int); extern int gengetwindow(Display*, char*, Image**, Screen**, int); extern Image* readimage(Display*, int, int); extern Image* creadimage(Display*, int, int); extern int unloadimage(Image*, Rectangle, uchar*, int); extern int wordsperline(Rectangle, int); extern int writeimage(int, Image*, int); extern Image* namedimage(Display*, char*); extern int nameimage(Image*, char*, int); extern Image* allocimagemix(Display*, ulong, ulong); /* * Colors */ extern void readcolmap(Display*, RGB*); extern void writecolmap(Display*, RGB*); extern ulong setalpha(ulong, uchar); /* * Windows */ extern Screen* allocscreen(Image*, Image*, int); extern Image* _allocwindow(Image*, Screen*, Rectangle, int, ulong); extern Image* allocwindow(Screen*, Rectangle, int, ulong); extern void bottomnwindows(Image**, int); extern void bottomwindow(Image*); extern int freescreen(Screen*); extern Screen* publicscreen(Display*, int, ulong); extern void topnwindows(Image**, int); extern void topwindow(Image*); extern int originwindow(Image*, Point, Point); /* * Geometry */ extern Point Pt(int, int); extern Rectangle Rect(int, int, int, int); extern Rectangle Rpt(Point, Point); extern Point addpt(Point, Point); extern Point subpt(Point, Point); extern Point divpt(Point, int); extern Point mulpt(Point, int); extern int eqpt(Point, Point); extern int eqrect(Rectangle, Rectangle); extern Rectangle insetrect(Rectangle, int); extern Rectangle rectaddpt(Rectangle, Point); extern Rectangle rectsubpt(Rectangle, Point); extern Rectangle canonrect(Rectangle); extern int rectXrect(Rectangle, Rectangle); extern int rectinrect(Rectangle, Rectangle); extern void combinerect(Rectangle*, Rectangle); extern int rectclip(Rectangle*, Rectangle); extern int ptinrect(Point, Rectangle); extern void replclipr(Image*, int, Rectangle); extern int drawreplxy(int, int, int); /* used to be drawsetxy */ extern Point drawrepl(Rectangle, Point); extern int rgb2cmap(int, int, int); extern int cmap2rgb(int); extern int cmap2rgba(int); extern void icossin(int, int*, int*); extern void icossin2(int, int, int*, int*); extern int badrect(Rectangle); /* * Graphics */ extern void draw(Image*, Rectangle, Image*, Image*, Point); extern void drawop(Image*, Rectangle, Image*, Image*, Point, Drawop); extern void gendraw(Image*, Rectangle, Image*, Point, Image*, Point); extern void gendrawop(Image*, Rectangle, Image*, Point, Image*, Point, Drawop); extern void line(Image*, Point, Point, int, int, int, Image*, Point); extern void lineop(Image*, Point, Point, int, int, int, Image*, Point, Drawop); extern void poly(Image*, Point*, int, int, int, int, Image*, Point); extern void polyop(Image*, Point*, int, int, int, int, Image*, Point, Drawop); extern void fillpoly(Image*, Point*, int, int, Image*, Point); extern void fillpolyop(Image*, Point*, int, int, Image*, Point, Drawop); extern Point string(Image*, Point, Image*, Point, Font*, char*); extern Point stringop(Image*, Point, Image*, Point, Font*, char*, Drawop); extern Point stringn(Image*, Point, Image*, Point, Font*, char*, int); extern Point stringnop(Image*, Point, Image*, Point, Font*, char*, int, Drawop); extern Point runestring(Image*, Point, Image*, Point, Font*, Rune*); extern Point runestringop(Image*, Point, Image*, Point, Font*, Rune*, Drawop); extern Point runestringn(Image*, Point, Image*, Point, Font*, Rune*, int); extern Point runestringnop(Image*, Point, Image*, Point, Font*, Rune*, int, Drawop); extern Point stringbg(Image*, Point, Image*, Point, Font*, char*, Image*, Point); extern Point stringbgop(Image*, Point, Image*, Point, Font*, char*, Image*, Point, Drawop); extern Point stringnbg(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point); extern Point stringnbgop(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point, Drawop); extern Point runestringbg(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point); extern Point runestringbgop(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point, Drawop); extern Point runestringnbg(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point); extern Point runestringnbgop(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point, Drawop); extern Point _string(Image*, Point, Image*, Point, Font*, char*, Rune*, int, Rectangle, Image*, Point, Drawop); extern Point stringsubfont(Image*, Point, Image*, Subfont*, char*); extern int bezier(Image*, Point, Point, Point, Point, int, int, int, Image*, Point); extern int bezierop(Image*, Point, Point, Point, Point, int, int, int, Image*, Point, Drawop); extern int bezierpts(Point, Point, Point, Point, Point**); extern int bezspline(Image*, Point*, int, int, int, int, Image*, Point); extern int bezsplineop(Image*, Point*, int, int, int, int, Image*, Point, Drawop); extern int bezsplinepts(Point*, int, Point**); extern int fillbezier(Image*, Point, Point, Point, Point, int, Image*, Point); extern int fillbezierop(Image*, Point, Point, Point, Point, int, Image*, Point, Drawop); extern int fillbezspline(Image*, Point*, int, int, Image*, Point); extern int fillbezsplineop(Image*, Point*, int, int, Image*, Point, Drawop); extern void ellipse(Image*, Point, int, int, int, Image*, Point); extern void ellipseop(Image*, Point, int, int, int, Image*, Point, Drawop); extern void fillellipse(Image*, Point, int, int, Image*, Point); extern void fillellipseop(Image*, Point, int, int, Image*, Point, Drawop); extern void arc(Image*, Point, int, int, int, Image*, Point, int, int); extern void arcop(Image*, Point, int, int, int, Image*, Point, int, int, Drawop); extern void fillarc(Image*, Point, int, int, Image*, Point, int, int); extern void fillarcop(Image*, Point, int, int, Image*, Point, int, int, Drawop); extern void border(Image*, Rectangle, int, Image*, Point); extern void borderop(Image*, Rectangle, int, Image*, Point, Drawop); /* * Font management */ extern Font* openfont(Display*, char*); extern Font* buildfont(Display*, char*, char*); extern void freefont(Font*); extern Font* mkfont(Subfont*, Rune); extern int cachechars(Font*, char**, Rune**, ushort*, int, int*, char**); extern void agefont(Font*); extern Subfont* allocsubfont(char*, int, int, int, Fontchar*, Image*); extern Subfont* lookupsubfont(Display*, char*); extern void installsubfont(char*, Subfont*); extern void uninstallsubfont(Subfont*); extern void freesubfont(Subfont*); extern Subfont* readsubfont(Display*, char*, int, int); extern Subfont* readsubfonti(Display*, char*, int, Image*, int); extern int writesubfont(int, Subfont*); extern void _unpackinfo(Fontchar*, uchar*, int); extern Point stringsize(Font*, char*); extern int stringwidth(Font*, char*); extern int stringnwidth(Font*, char*, int); extern Point runestringsize(Font*, Rune*); extern int runestringwidth(Font*, Rune*); extern int runestringnwidth(Font*, Rune*, int); extern Point strsubfontwidth(Subfont*, char*); extern int loadchar(Font*, Rune, Cacheinfo*, int, int, char**); extern char* subfontname(char*, char*, int); extern Subfont* _getsubfont(Display*, char*); extern Subfont* getdefont(Display*); extern void lockdisplay(Display*); extern void unlockdisplay(Display*); /* * Predefined */ extern uchar defontdata[]; extern int sizeofdefont; extern Point ZP; extern Rectangle ZR; /* * Set up by initdraw() */ extern Display *display; extern Font *font; extern Image *screen; extern Screen *_screen; extern int _cursorfd; extern void _setdrawop(Display*, Drawop); #define BGSHORT(p) ((p)[0]|((p)[1]<<8)) #define BGLONG(p) ((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) #define BPSHORT(p,v) do{ushort _v_=(v);(p)[0]=_v_;(p)[1]=_v_>>8;}while(0) #define BPLONG(p,v) do{ulong _v_=(v);(p)[0]=_v_;(p)[1]=_v_>>8;(p)[2]=_v_>>16;(p)[3]=_v_>>24;}while(0) /* * 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); extern ulong drawld2chan[]; extern void drawsetdebug(int);