diff options
Diffstat (limited to 'include/draw.h')
-rw-r--r-- | include/draw.h | 520 |
1 files changed, 520 insertions, 0 deletions
diff --git a/include/draw.h b/include/draw.h new file mode 100644 index 00000000..0f9ba63a --- /dev/null +++ b/include/draw.h @@ -0,0 +1,520 @@ +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; + +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), + BGR24 = CHAN3(CBlue, 8, CGreen, 8, CRed, 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), + XBGR32 = CHAN4(CIgnore, 8, CBlue, 8, CGreen, 8, CRed, 8), +}; + +extern char* chantostr(char*, u32int); +extern u32int strtochan(char*); +extern int chantodepth(u32int); + +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 imageid; + int local; + void (*error)(Display*, char*); + char *devdir; + char *windir; + char oldlabel[64]; + u32int dataqid; + Image *image; + Image *white; + Image *black; + Image *opaque; + Image *transparent; + uchar *buf; + int bufsize; + uchar *bufp; + uchar *obuf; + int obufsize; + uchar *obufp; + 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 */ + u32int 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 +{ + u32int red; + u32int green; + u32int 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 +{ + u32int 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 */ + u32int 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) + +/* + * Image management + */ +extern Image* _allocimage(Image*, Display*, Rectangle, u32int, int, u32int, int, int); +extern Image* allocimage(Display*, Rectangle, u32int, int, u32int); +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 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*, u32int, u32int); + +/* + * Colors + */ +extern void readcolmap(Display*, RGB*); +extern void writecolmap(Display*, RGB*); +extern u32int setalpha(u32int, uchar); + +/* + * Windows + */ +extern Screen* allocscreen(Image*, Image*, int); +extern Image* _allocwindow(Image*, Screen*, Rectangle, int, u32int); +extern Image* allocwindow(Screen*, Rectangle, int, u32int); +extern void bottomnwindows(Image**, int); +extern void bottomwindow(Image*); +extern int freescreen(Screen*); +extern Screen* publicscreen(Display*, int, u32int); +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*); + +/* + * 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 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*); +extern int drawlsetrefresh(u32int, int, void*, void*); + +/* + * 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 int _drawdebug; /* set to 1 to see errors from flushimage */ +extern void _setdrawop(Display*, Drawop); +extern Display *_initdisplay(void(*)(Display*,char*), char*); + +#define BGSHORT(p) (((p)[0]<<0) | ((p)[1]<<8)) +#define BGLONG(p) ((BGSHORT(p)<<0) | (BGSHORT(p+2)<<16)) +#define BPSHORT(p, v) ((p)[0]=(v), (p)[1]=((v)>>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 u32int drawld2chan[]; +extern void drawsetdebug(int); + +/* + * Port magic. + */ +int _drawmsgread(Display*, void*, int); +int _drawmsgwrite(Display*, void*, int); 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