1 #pragma src "/usr/inferno/libdraw" 2 3 #pragma varargck argpos _drawprint 2 4 5 typedef struct Cachefont Cachefont; 6 typedef struct Cacheinfo Cacheinfo; 7 typedef struct Cachesubf Cachesubf; 8 typedef struct Display Display; 9 typedef struct Font Font; 10 typedef struct Fontchar Fontchar; 11 typedef struct Image Image; 12 typedef struct Mouse Mouse; 13 typedef struct Point Point; 14 typedef struct Rectangle Rectangle; 15 typedef struct RGB RGB; 16 typedef struct Refreshq Refreshq; 17 typedef struct Screen Screen; 18 typedef struct Subfont Subfont; 19 20 #pragma varargck type "R" Rectangle 21 #pragma varargck type "P" Point 22 extern int Rfmt(Fmt*); 23 extern int Pfmt(Fmt*); 24 25 enum 26 { 27 DOpaque = 0xFFFFFFFF, 28 DTransparent = 0x00000000, /* only useful for allocimage, memfillcolor */ 29 DBlack = 0x000000FF, 30 DWhite = 0xFFFFFFFF, 31 DRed = 0xFF0000FF, 32 DGreen = 0x00FF00FF, 33 DBlue = 0x0000FFFF, 34 DCyan = 0x00FFFFFF, 35 DMagenta = 0xFF00FFFF, 36 DYellow = 0xFFFF00FF, 37 DPaleyellow = 0xFFFFAAFF, 38 DDarkyellow = 0xEEEE9EFF, 39 DDarkgreen = 0x448844FF, 40 DPalegreen = 0xAAFFAAFF, 41 DMedgreen = 0x88CC88FF, 42 DDarkblue = 0x000055FF, 43 DPalebluegreen= 0xAAFFFFFF, 44 DPaleblue = 0x0000BBFF, 45 DBluegreen = 0x008888FF, 46 DGreygreen = 0x55AAAAFF, 47 DPalegreygreen = 0x9EEEEEFF, 48 DYellowgreen = 0x99994CFF, 49 DMedblue = 0x000099FF, 50 DGreyblue = 0x005DBBFF, 51 DPalegreyblue = 0x4993DDFF, 52 DPurpleblue = 0x8888CCFF, 53 54 DNotacolor = 0xFFFFFF00, 55 DNofill = DNotacolor, 56 57 }; 58 59 enum 60 { 61 Displaybufsize = 8000, 62 ICOSSCALE = 1024, 63 Borderwidth = 4, 64 }; 65 66 enum 67 { 68 /* refresh methods */ 69 Refbackup = 0, 70 Refnone = 1, 71 Refmesg = 2 72 }; 73 #define NOREFRESH ((void*)-1) 74 75 enum 76 { 77 /* line ends */ 78 Endsquare = 0, 79 Enddisc = 1, 80 Endarrow = 2, 81 Endmask = 0x1F 82 }; 83 84 #define ARROW(a, b, c) (Endarrow|((a)<<5)|((b)<<14)|((c)<<23)) 85 86 /* 87 * image channel descriptors 88 */ 89 enum { 90 CRed = 0, 91 CGreen, 92 CBlue, 93 CGrey, 94 CAlpha, 95 CMap, 96 CIgnore, 97 NChan, 98 }; 99 100 #define __DC(type, nbits) ((((type)&15)<<4)|((nbits)&15)) 101 #define CHAN1(a,b) __DC(a,b) 102 #define CHAN2(a,b,c,d) (CHAN1((a),(b))<<8|__DC((c),(d))) 103 #define CHAN3(a,b,c,d,e,f) (CHAN2((a),(b),(c),(d))<<8|__DC((e),(f))) 104 #define CHAN4(a,b,c,d,e,f,g,h) (CHAN3((a),(b),(c),(d),(e),(f))<<8|__DC((g),(h))) 105 106 #define NBITS(c) ((c)&15) 107 #define TYPE(c) (((c)>>4)&15) 108 109 enum { 110 GREY1 = CHAN1(CGrey, 1), 111 GREY2 = CHAN1(CGrey, 2), 112 GREY4 = CHAN1(CGrey, 4), 113 GREY8 = CHAN1(CGrey, 8), 114 CMAP8 = CHAN1(CMap, 8), 115 RGB15 = CHAN4(CIgnore, 1, CRed, 5, CGreen, 5, CBlue, 5), 116 RGB16 = CHAN3(CRed, 5, CGreen, 6, CBlue, 5), 117 RGB24 = CHAN3(CRed, 8, CGreen, 8, CBlue, 8), 118 RGBA32 = CHAN4(CRed, 8, CGreen, 8, CBlue, 8, CAlpha, 8), 119 ARGB32 = CHAN4(CAlpha, 8, CRed, 8, CGreen, 8, CBlue, 8), /* stupid VGAs */ 120 XRGB32 = CHAN4(CIgnore, 8, CRed, 8, CGreen, 8, CBlue, 8), 121 BGR24 = CHAN3(CBlue, 8, CGreen, 8, CRed, 8), 122 ABGR32 = CHAN4(CAlpha, 8, CBlue, 8, CGreen, 8, CRed, 8), 123 XBGR32 = CHAN4(CIgnore, 8, CBlue, 8, CGreen, 8, CRed, 8), 124 }; 125 126 /* compositing operators */ 127 128 typedef enum 129 { 130 SinD = 1<<3, 131 DinS = 1<<2, 132 SoutD = 1<<1, 133 DoutS = 1 <<0, 134 135 S = SinD|SoutD, 136 SoverD = SinD|SoutD|DoutS, 137 SatopD = SinD|DoutS, 138 SxorD = SoutD|DoutS, 139 140 D = DinS|DoutS, 141 DoverS = DinS|DoutS|SoutD, 142 DatopS = DinS|SoutD, 143 DxorS = DoutS|SoutD, 144 145 Clear = 0, 146 147 Ncomp = 12, 148 } Drawop; 149 150 extern char* chantostr(char*, ulong); 151 extern ulong strtochan(char*); 152 extern int chantodepth(ulong); 153 154 struct Point 155 { 156 int x; 157 int y; 158 }; 159 160 struct Rectangle 161 { 162 Point min; 163 Point max; 164 }; 165 166 typedef void (*Reffn)(Image*, Rectangle, void*); 167 168 struct Screen 169 { 170 Display *display; /* display holding data */ 171 int id; /* id of system-held Screen */ 172 Image *image; /* unused; for reference only */ 173 Image *fill; /* color to paint behind windows */ 174 }; 175 176 struct Refreshq 177 { 178 Reffn reffn; 179 void *refptr; 180 Rectangle r; 181 Refreshq *next; 182 }; 183 184 struct Display 185 { 186 void* qlock; 187 int locking; /*program is using lockdisplay */ 188 int dirno; 189 void *datachan; 190 void *refchan; 191 void *ctlchan; 192 int imageid; 193 int local; 194 int depth; 195 ulong chan; 196 void (*error)(Display*, char*); 197 char *devdir; 198 char *windir; 199 char oldlabel[64]; 200 ulong dataqid; 201 Image *white; 202 Image *black; 203 Image *image; 204 Image *opaque; 205 Image *transparent; 206 uchar buf[Displaybufsize+1]; /* +1 for flush message */ 207 int bufsize; 208 uchar *bufp; 209 Font *defaultfont; 210 Subfont *defaultsubfont; 211 Image *windows; 212 void *limbo; 213 Refreshq *refhead; 214 Refreshq *reftail; 215 }; 216 217 struct Image 218 { 219 Display *display; /* display holding data */ 220 int id; /* id of system-held Image */ 221 Rectangle r; /* rectangle in data area, local coords */ 222 Rectangle clipr; /* clipping region */ 223 int depth; /* number of bits per pixel */ 224 ulong chan; 225 int repl; /* flag: data replicates to tile clipr */ 226 Screen *screen; /* 0 if not a window */ 227 Image *next; /* next in list of windows */ 228 Reffn reffn; 229 void *refptr; 230 }; 231 232 struct RGB 233 { 234 ulong red; 235 ulong green; 236 ulong blue; 237 }; 238 239 /* 240 * Subfonts 241 * 242 * given char c, Subfont *f, Fontchar *i, and Point p, one says 243 * i = f->info+c; 244 * draw(b, Rect(p.x+i->left, p.y+i->top, 245 * p.x+i->left+((i+1)->x-i->x), p.y+i->bottom), 246 * color, f->bits, Pt(i->x, i->top)); 247 * p.x += i->width; 248 * to draw characters in the specified color (itself an Image) in Image b. 249 */ 250 251 struct Fontchar 252 { 253 int x; /* left edge of bits */ 254 uchar top; /* first non-zero scan-line */ 255 uchar bottom; /* last non-zero scan-line + 1 */ 256 char left; /* offset of baseline */ 257 uchar width; /* width of baseline */ 258 }; 259 260 struct Subfont 261 { 262 char *name; 263 short n; /* number of chars in font */ 264 uchar height; /* height of image */ 265 char ascent; /* top of image to baseline */ 266 Fontchar *info; /* n+1 character descriptors */ 267 Image *bits; /* of font */ 268 int ref; 269 }; 270 271 enum 272 { 273 /* starting values */ 274 LOG2NFCACHE = 6, 275 NFCACHE = (1<<LOG2NFCACHE), /* #chars cached */ 276 NFLOOK = 5, /* #chars to scan in cache */ 277 NFSUBF = 2, /* #subfonts to cache */ 278 /* max value */ 279 MAXFCACHE = 1024+NFLOOK, /* upper limit */ 280 MAXSUBF = 50, /* generous upper limit */ 281 /* deltas */ 282 DSUBF = 4, 283 /* expiry ages */ 284 SUBFAGE = 10000, 285 CACHEAGE = 10000 286 }; 287 288 struct Cachefont 289 { 290 Rune min; /* lowest rune value to be taken from subfont */ 291 Rune max; /* highest rune value+1 to be taken from subfont */ 292 int offset; /* position in subfont of character at min */ 293 char *name; /* stored in font */ 294 char *subfontname; /* to access subfont */ 295 }; 296 297 struct Cacheinfo 298 { 299 ushort x; /* left edge of bits */ 300 uchar width; /* width of baseline */ 301 schar left; /* offset of baseline */ 302 Rune value; /* value of character at this slot in cache */ 303 ushort age; 304 }; 305 306 struct Cachesubf 307 { 308 ulong age; /* for replacement */ 309 Cachefont *cf; /* font info that owns us */ 310 Subfont *f; /* attached subfont */ 311 }; 312 313 struct Font 314 { 315 char *name; 316 Display *display; 317 short height; /* max height of image, interline spacing */ 318 short ascent; /* top of image to baseline */ 319 short width; /* widest so far; used in caching only */ 320 short nsub; /* number of subfonts */ 321 ulong age; /* increasing counter; used for LRU */ 322 int maxdepth; /* maximum depth of all loaded subfonts */ 323 int ncache; /* size of cache */ 324 int nsubf; /* size of subfont list */ 325 Cacheinfo *cache; 326 Cachesubf *subf; 327 Cachefont **sub; /* as read from file */ 328 Image *cacheimage; 329 }; 330 331 #define Dx(r) ((r).max.x-(r).min.x) 332 #define Dy(r) ((r).max.y-(r).min.y) 333 334 /* 335 * Image management 336 */ 337 extern Image* _allocimage(Image*, Display*, Rectangle, ulong, int, ulong, int, int); 338 extern Image* allocimage(Display*, Rectangle, ulong, int, ulong); 339 extern uchar* bufimage(Display*, int); 340 extern int bytesperline(Rectangle, int); 341 extern void closedisplay(Display*); 342 extern void drawerror(Display*, char*); 343 extern int _drawprint(int, char*, ...); 344 extern int flushimage(Display*, int); 345 extern int freeimage(Image*); 346 extern int _freeimage1(Image*); 347 extern int geninitdraw(char*, void(*)(Display*, char*), char*, char*, char*, int); 348 extern int initdraw(void(*)(Display*, char*), char*, char*); 349 extern Display* initdisplay(char*, char*, void(*)(Display*, char*)); 350 extern int loadimage(Image*, Rectangle, uchar*, int); 351 extern int cloadimage(Image*, Rectangle, uchar*, int); 352 extern int getwindow(Display*, int); 353 extern int gengetwindow(Display*, char*, Image**, Screen**, int); 354 extern Image* readimage(Display*, int, int); 355 extern Image* creadimage(Display*, int, int); 356 extern int unloadimage(Image*, Rectangle, uchar*, int); 357 extern int wordsperline(Rectangle, int); 358 extern int writeimage(int, Image*, int); 359 extern Image* namedimage(Display*, char*); 360 extern int nameimage(Image*, char*, int); 361 extern Image* allocimagemix(Display*, ulong, ulong); 362 363 /* 364 * Colors 365 */ 366 extern void readcolmap(Display*, RGB*); 367 extern void writecolmap(Display*, RGB*); 368 extern ulong setalpha(ulong, uchar); 369 370 /* 371 * Windows 372 */ 373 extern Screen* allocscreen(Image*, Image*, int); 374 extern Image* _allocwindow(Image*, Screen*, Rectangle, int, ulong); 375 extern Image* allocwindow(Screen*, Rectangle, int, ulong); 376 extern void bottomnwindows(Image**, int); 377 extern void bottomwindow(Image*); 378 extern int freescreen(Screen*); 379 extern Screen* publicscreen(Display*, int, ulong); 380 extern void topnwindows(Image**, int); 381 extern void topwindow(Image*); 382 extern int originwindow(Image*, Point, Point); 383 384 /* 385 * Geometry 386 */ 387 extern Point Pt(int, int); 388 extern Rectangle Rect(int, int, int, int); 389 extern Rectangle Rpt(Point, Point); 390 extern Point addpt(Point, Point); 391 extern Point subpt(Point, Point); 392 extern Point divpt(Point, int); 393 extern Point mulpt(Point, int); 394 extern int eqpt(Point, Point); 395 extern int eqrect(Rectangle, Rectangle); 396 extern Rectangle insetrect(Rectangle, int); 397 extern Rectangle rectaddpt(Rectangle, Point); 398 extern Rectangle rectsubpt(Rectangle, Point); 399 extern Rectangle canonrect(Rectangle); 400 extern int rectXrect(Rectangle, Rectangle); 401 extern int rectinrect(Rectangle, Rectangle); 402 extern void combinerect(Rectangle*, Rectangle); 403 extern int rectclip(Rectangle*, Rectangle); 404 extern int ptinrect(Point, Rectangle); 405 extern void replclipr(Image*, int, Rectangle); 406 extern int drawreplxy(int, int, int); /* used to be drawsetxy */ 407 extern Point drawrepl(Rectangle, Point); 408 extern int rgb2cmap(int, int, int); 409 extern int cmap2rgb(int); 410 extern int cmap2rgba(int); 411 extern void icossin(int, int*, int*); 412 extern void icossin2(int, int, int*, int*); 413 414 /* 415 * Graphics 416 */ 417 extern void draw(Image*, Rectangle, Image*, Image*, Point); 418 extern void drawop(Image*, Rectangle, Image*, Image*, Point, Drawop); 419 extern void gendraw(Image*, Rectangle, Image*, Point, Image*, Point); 420 extern void gendrawop(Image*, Rectangle, Image*, Point, Image*, Point, Drawop); 421 extern void line(Image*, Point, Point, int, int, int, Image*, Point); 422 extern void lineop(Image*, Point, Point, int, int, int, Image*, Point, Drawop); 423 extern void poly(Image*, Point*, int, int, int, int, Image*, Point); 424 extern void polyop(Image*, Point*, int, int, int, int, Image*, Point, Drawop); 425 extern void fillpoly(Image*, Point*, int, int, Image*, Point); 426 extern void fillpolyop(Image*, Point*, int, int, Image*, Point, Drawop); 427 extern Point string(Image*, Point, Image*, Point, Font*, char*); 428 extern Point stringop(Image*, Point, Image*, Point, Font*, char*, Drawop); 429 extern Point stringn(Image*, Point, Image*, Point, Font*, char*, int); 430 extern Point stringnop(Image*, Point, Image*, Point, Font*, char*, int, Drawop); 431 extern Point runestring(Image*, Point, Image*, Point, Font*, Rune*); 432 extern Point runestringop(Image*, Point, Image*, Point, Font*, Rune*, Drawop); 433 extern Point runestringn(Image*, Point, Image*, Point, Font*, Rune*, int); 434 extern Point runestringnop(Image*, Point, Image*, Point, Font*, Rune*, int, Drawop); 435 extern Point stringbg(Image*, Point, Image*, Point, Font*, char*, Image*, Point); 436 extern Point stringbgop(Image*, Point, Image*, Point, Font*, char*, Image*, Point, Drawop); 437 extern Point stringnbg(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point); 438 extern Point stringnbgop(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point, Drawop); 439 extern Point runestringbg(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point); 440 extern Point runestringbgop(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point, Drawop); 441 extern Point runestringnbg(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point); 442 extern Point runestringnbgop(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point, Drawop); 443 extern Point _string(Image*, Point, Image*, Point, Font*, char*, Rune*, int, Rectangle, Image*, Point, Drawop); 444 extern Point stringsubfont(Image*, Point, Image*, Subfont*, char*); 445 extern int bezier(Image*, Point, Point, Point, Point, int, int, int, Image*, Point); 446 extern int bezierop(Image*, Point, Point, Point, Point, int, int, int, Image*, Point, Drawop); 447 extern int bezspline(Image*, Point*, int, int, int, int, Image*, Point); 448 extern int bezsplineop(Image*, Point*, int, int, int, int, Image*, Point, Drawop); 449 extern int getbezsplinepts(Point*, int, Point**); 450 extern int fillbezier(Image*, Point, Point, Point, Point, int, Image*, Point); 451 extern int fillbezierop(Image*, Point, Point, Point, Point, int, Image*, Point, Drawop); 452 extern int fillbezspline(Image*, Point*, int, int, Image*, Point); 453 extern int fillbezsplineop(Image*, Point*, int, int, Image*, Point, Drawop); 454 extern void ellipse(Image*, Point, int, int, int, Image*, Point); 455 extern void ellipseop(Image*, Point, int, int, int, Image*, Point, Drawop); 456 extern void fillellipse(Image*, Point, int, int, Image*, Point); 457 extern void fillellipseop(Image*, Point, int, int, Image*, Point, Drawop); 458 extern void arc(Image*, Point, int, int, int, Image*, Point, int, int); 459 extern void arcop(Image*, Point, int, int, int, Image*, Point, int, int, Drawop); 460 extern void fillarc(Image*, Point, int, int, Image*, Point, int, int); 461 extern void fillarcop(Image*, Point, int, int, Image*, Point, int, int, Drawop); 462 extern void border(Image*, Rectangle, int, Image*, Point); 463 extern void borderop(Image*, Rectangle, int, Image*, Point, Drawop); 464 465 /* 466 * Font management 467 */ 468 extern Font* openfont(Display*, char*); 469 extern Font* buildfont(Display*, char*, char*); 470 extern void freefont(Font*); 471 extern Font* mkfont(Subfont*, Rune); 472 extern int cachechars(Font*, char**, Rune**, ushort*, int, int*, char**); 473 extern void agefont(Font*); 474 extern Subfont* allocsubfont(char*, int, int, int, Fontchar*, Image*); 475 extern Subfont* lookupsubfont(Display*, char*); 476 extern void installsubfont(char*, Subfont*); 477 extern void uninstallsubfont(Subfont*); 478 extern void freesubfont(Subfont*); 479 extern Subfont* readsubfont(Display*, char*, int, int); 480 extern Subfont* readsubfonti(Display*, char*, int, Image*, int); 481 extern int writesubfont(int, Subfont*); 482 extern void _unpackinfo(Fontchar*, uchar*, int); 483 extern Point stringsize(Font*, char*); 484 extern int stringwidth(Font*, char*); 485 extern int stringnwidth(Font*, char*, int); 486 extern Point runestringsize(Font*, Rune*); 487 extern int runestringwidth(Font*, Rune*); 488 extern int runestringnwidth(Font*, Rune*, int); 489 extern Point strsubfontwidth(Subfont*, char*); 490 extern int loadchar(Font*, Rune, Cacheinfo*, int, int, char**); 491 extern char* subfontname(char*, char*, int); 492 extern Subfont* _getsubfont(Display*, char*); 493 extern Subfont* getdefont(Display*); 494 extern int lockdisplay(Display*); 495 extern void unlockdisplay(Display*); 496 extern int drawlsetrefresh(ulong, int, void*, void*); 497 498 /* Compositing operator utility */ 499 extern void _setdrawop(Display*, Drawop); 500 501 /* 502 * Predefined 503 */ 504 extern uchar defontdata[]; 505 extern int sizeofdefont; 506 extern Point ZP; 507 extern Rectangle ZR; 508 509 /* 510 * Set up by initdraw() 511 */ 512 extern int _cursorfd; 513 extern int _drawdebug; /* set to 1 to see errors from flushimage */ 514 515 #define BGSHORT(p) (((p)[0]<<0) | ((p)[1]<<8)) 516 #define BGLONG(p) ((BGSHORT(p)<<0) | (BGSHORT(p+2)<<16)) 517 #define BPSHORT(p, v) ((p)[0]=(v), (p)[1]=((v)>>8)) 518 #define BPLONG(p, v) (BPSHORT(p, (v)), BPSHORT(p+2, (v)>>16)) 519 520 /* 521 * Compressed image file parameters 522 */ 523 #define NMATCH 3 /* shortest match possible */ 524 #define NRUN (NMATCH+31) /* longest match possible */ 525 #define NMEM 1024 /* window size */ 526 #define NDUMP 128 /* maximum length of dump */ 527 #define NCBLOCK 6000 /* size of compressed blocks */ 528 extern void _twiddlecompressed(uchar*, int); 529 extern int _compblocksize(Rectangle, int); 530 531 /* XXX backwards helps; should go */ 532 extern ulong drawld2chan[]; 533 extern void drawsetdebug(int); 534 535 /* 536 * Inferno interface 537 */ 538 extern Font* font_open(Display*, char*); 539 extern void font_close(Font*); 540 541 /* 542 * Macros to convert between C and Limbo types 543 */ 544 #define IRECT(r) (*(Rectangle*)&(r)) 545 #define DRECT(r) (*(Draw_Rect*)&(r)) 546 #define IPOINT(p) (*(Point*)&(p)) 547 #define DPOINT(p) (*(Draw_Point*)&(p)) 548 549 #define P2P(p1, p2) (p1).x = (p2).x, (p1).y = (p2).y 550 #define R2R(r1, r2) (r1).min.x = (r2).min.x, (r1).min.y = (r2).min.y,\ 551 (r1).max.x = (r2).max.x, (r1).max.y = (r2).max.y 552 extern Image* display_open(Display*, char*); 553