draw.h - vx32 - Local 9vx git repository for patches.
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draw.h (15844B)
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1
2 typedef struct Cachefont Cachefont;
3 typedef struct Cacheinfo Cacheinfo;
4 typedef struct Cachesubf Cachesubf;
5 typedef struct Display Display;
6 typedef struct Font Font;
7 typedef struct Fontchar Fontchar;
8 typedef struct Image Image;
9 typedef struct Mouse Mouse;
10 typedef struct Point Point;
11 typedef struct Rectangle Rectangle;
12 typedef struct RGB RGB;
13 typedef struct Screen Screen;
14 typedef struct Subfont Subfont;
15
16
17 extern int Rfmt(Fmt*);
18 extern int Pfmt(Fmt*);
19
20 enum
21 {
22 DOpaque = 0xFFFFFFFF,
23 DTransparent = 0x00000000, /* only useful for allocimage, memfillcolor */
24 DBlack = 0x000000FF,
25 DWhite = 0xFFFFFFFF,
26 DRed = 0xFF0000FF,
27 DGreen = 0x00FF00FF,
28 DBlue = 0x0000FFFF,
29 DCyan = 0x00FFFFFF,
30 DMagenta = 0xFF00FFFF,
31 DYellow = 0xFFFF00FF,
32 DPaleyellow = 0xFFFFAAFF,
33 DDarkyellow = 0xEEEE9EFF,
34 DDarkgreen = 0x448844FF,
35 DPalegreen = 0xAAFFAAFF,
36 DMedgreen = 0x88CC88FF,
37 DDarkblue = 0x000055FF,
38 DPalebluegreen= 0xAAFFFFFF,
39 DPaleblue = 0x0000BBFF,
40 DBluegreen = 0x008888FF,
41 DGreygreen = 0x55AAAAFF,
42 DPalegreygreen = 0x9EEEEEFF,
43 DYellowgreen = 0x99994CFF,
44 DMedblue = 0x000099FF,
45 DGreyblue = 0x005DBBFF,
46 DPalegreyblue = 0x4993DDFF,
47 DPurpleblue = 0x8888CCFF,
48
49 DNotacolor = 0xFFFFFF00,
50 DNofill = DNotacolor,
51
52 };
53
54 enum
55 {
56 Displaybufsize = 8000,
57 ICOSSCALE = 1024,
58 Borderwidth = 4,
59 };
60
61 enum
62 {
63 /* refresh methods */
64 Refbackup = 0,
65 Refnone = 1,
66 Refmesg = 2
67 };
68 #define NOREFRESH ((void*)-1)
69
70 enum
71 {
72 /* line ends */
73 Endsquare = 0,
74 Enddisc = 1,
75 Endarrow = 2,
76 Endmask = 0x1F
77 };
78
79 #define ARROW(a, b, c) (Endarrow|((a)<<5)|((b)<<14)|((c)<<23))
80
81 typedef enum
82 {
83 /* Porter-Duff compositing operators */
84 Clear = 0,
85
86 SinD = 8,
87 DinS = 4,
88 SoutD = 2,
89 DoutS = 1,
90
91 S = SinD|SoutD,
92 SoverD = SinD|SoutD|DoutS,
93 SatopD = SinD|DoutS,
94 SxorD = SoutD|DoutS,
95
96 D = DinS|DoutS,
97 DoverS = DinS|DoutS|SoutD,
98 DatopS = DinS|SoutD,
99 DxorS = DoutS|SoutD, /* == SxorD */
100
101 Ncomp = 12,
102 } Drawop;
103
104 /*
105 * image channel descriptors
106 */
107 enum {
108 CRed = 0,
109 CGreen,
110 CBlue,
111 CGrey,
112 CAlpha,
113 CMap,
114 CIgnore,
115 NChan,
116 };
117
118 #define __DC(type, nbits) ((((type)&15)<<4)|((nbits)&15))
119 #define CHAN1(a,b) __DC(a,b)
120 #define CHAN2(a,b,c,d) (CHAN1((a),(b))<<8|__DC((c),(d)))
121 #define CHAN3(a,b,c,d,e,f) (CHAN2((a),(b),(c),(d))<<8|__DC((e),(f)))
122 #define CHAN4(a,b,c,d,e,f,g,h) (CHAN3((a),(b),(c),(d),(e),(f))<<8|__DC((g),(h)))
123
124 #define NBITS(c) ((c)&15)
125 #define TYPE(c) (((c)>>4)&15)
126
127 enum {
128 GREY1 = CHAN1(CGrey, 1),
129 GREY2 = CHAN1(CGrey, 2),
130 GREY4 = CHAN1(CGrey, 4),
131 GREY8 = CHAN1(CGrey, 8),
132 CMAP8 = CHAN1(CMap, 8),
133 RGB15 = CHAN4(CIgnore, 1, CRed, 5, CGreen, 5, CBlue, 5),
134 RGB16 = CHAN3(CRed, 5, CGreen, 6, CBlue, 5),
135 RGB24 = CHAN3(CRed, 8, CGreen, 8, CBlue, 8),
136 RGBA32 = CHAN4(CRed, 8, CGreen, 8, CBlue, 8, CAlpha, 8),
137 ARGB32 = CHAN4(CAlpha, 8, CRed, 8, CGreen, 8, CBlue, 8), /* stupid VGAs */
138 XRGB32 = CHAN4(CIgnore, 8, CRed, 8, CGreen, 8, CBlue, 8),
139 BGR24 = CHAN3(CBlue, 8, CGreen, 8, CRed, 8),
140 ABGR32 = CHAN4(CAlpha, 8, CBlue, 8, CGreen, 8, CRed, 8),
141 XBGR32 = CHAN4(CIgnore, 8, CBlue, 8, CGreen, 8, CRed, 8),
142 };
143
144 extern char* chantostr(char*, ulong);
145 extern ulong strtochan(char*);
146 extern int chantodepth(ulong);
147
148 struct Point
149 {
150 int x;
151 int y;
152 };
153
154 struct Rectangle
155 {
156 Point min;
157 Point max;
158 };
159
160 typedef void (*Reffn)(Image*, Rectangle, void*);
161
162 struct Screen
163 {
164 int id; /* id of system-held Screen */
165 Image *image; /* unused; for reference only */
166 Image *fill; /* color to paint behind windows */
167 };
168
169 struct Display
170 {
171 int locking; /*program is using lockdisplay */
172 int dirno;
173 int fd;
174 int reffd;
175 int ctlfd;
176 int imageid;
177 int local;
178 void (*error)(Display*, char*);
179 char *devdir;
180 char *windir;
181 char oldlabel[64];
182 ulong dataqid;
183 Image *white;
184 Image *black;
185 Image *opaque;
186 Image *transparent;
187 Image *image;
188 uchar *buf;
189 int bufsize;
190 uchar *bufp;
191 Font *defaultfont;
192 Subfont *defaultsubfont;
193 Image *windows;
194 Image *screenimage;
195 int _isnewdisplay;
196 };
197
198 struct Image
199 {
200 Display *display; /* display holding data */
201 int id; /* id of system-held Image */
202 Rectangle r; /* rectangle in data area, local coords */
203 Rectangle clipr; /* clipping region */
204 int depth; /* number of bits per pixel */
205 ulong chan;
206 int repl; /* flag: data replicates to tile clipr */
207 Screen *screen; /* 0 if not a window */
208 Image *next; /* next in list of windows */
209 };
210
211 struct RGB
212 {
213 ulong red;
214 ulong green;
215 ulong blue;
216 };
217
218 /*
219 * Subfonts
220 *
221 * given char c, Subfont *f, Fontchar *i, and Point p, one says
222 * i = f->info+c;
223 * draw(b, Rect(p.x+i->left, p.y+i->top,
224 * p.x+i->left+((i+1)->x-i->x), p.y+i->bottom),
225 * color, f->bits, Pt(i->x, i->top));
226 * p.x += i->width;
227 * to draw characters in the specified color (itself an Image) in Image b.
228 */
229
230 struct Fontchar
231 {
232 int x; /* left edge of bits */
233 uchar top; /* first non-zero scan-line */
234 uchar bottom; /* last non-zero scan-line + 1 */
235 char left; /* offset of baseline */
236 uchar width; /* width of baseline */
237 };
238
239 struct Subfont
240 {
241 char *name;
242 short n; /* number of chars in font */
243 uchar height; /* height of image */
244 char ascent; /* top of image to baseline */
245 Fontchar *info; /* n+1 character descriptors */
246 Image *bits; /* of font */
247 int ref;
248 };
249
250 enum
251 {
252 /* starting values */
253 LOG2NFCACHE = 6,
254 NFCACHE = (1<<LOG2NFCACHE), /* #chars cached */
255 NFLOOK = 5, /* #chars to scan in cache */
256 NFSUBF = 2, /* #subfonts to cache */
257 /* max value */
258 MAXFCACHE = 1024+NFLOOK, /* upper limit */
259 MAXSUBF = 50, /* generous upper limit */
260 /* deltas */
261 DSUBF = 4,
262 /* expiry ages */
263 SUBFAGE = 10000,
264 CACHEAGE = 10000
265 };
266
267 struct Cachefont
268 {
269 Rune min; /* lowest rune value to be taken from subfont */
270 Rune max; /* highest rune value+1 to be taken from subfont */
271 int offset; /* position in subfont of character at min */
272 char *name; /* stored in font */
273 char *subfontname; /* to access subfont */
274 };
275
276 struct Cacheinfo
277 {
278 ushort x; /* left edge of bits */
279 uchar width; /* width of baseline */
280 schar left; /* offset of baseline */
281 Rune value; /* value of character at this slot in cache */
282 ushort age;
283 };
284
285 struct Cachesubf
286 {
287 ulong age; /* for replacement */
288 Cachefont *cf; /* font info that owns us */
289 Subfont *f; /* attached subfont */
290 };
291
292 struct Font
293 {
294 char *name;
295 Display *display;
296 short height; /* max height of image, interline spacing */
297 short ascent; /* top of image to baseline */
298 short width; /* widest so far; used in caching only */
299 short nsub; /* number of subfonts */
300 ulong age; /* increasing counter; used for LRU */
301 int maxdepth; /* maximum depth of all loaded subfonts */
302 int ncache; /* size of cache */
303 int nsubf; /* size of subfont list */
304 Cacheinfo *cache;
305 Cachesubf *subf;
306 Cachefont **sub; /* as read from file */
307 Image *cacheimage;
308 };
309
310 #define Dx(r) ((r).max.x-(r).min.x)
311 #define Dy(r) ((r).max.y-(r).min.y)
312
313 /*
314 * One of a kind
315 */
316 extern int mousescrollsize(int);
317
318 /*
319 * Image management
320 */
321 extern Image* _allocimage(Image*, Display*, Rectangle, ulong, int, ulong, int, int);
322 extern Image* allocimage(Display*, Rectangle, ulong, int, ulong);
323 extern uchar* bufimage(Display*, int);
324 extern int bytesperline(Rectangle, int);
325 extern void closedisplay(Display*);
326 extern void drawerror(Display*, char*);
327 extern int flushimage(Display*, int);
328 extern int freeimage(Image*);
329 extern int _freeimage1(Image*);
330 extern int geninitdraw(char*, void(*)(Display*, char*), char*, char*, char*, int);
331 extern int initdraw(void(*)(Display*, char*), char*, char*);
332 extern int newwindow(char*);
333 extern Display* initdisplay(char*, char*, void(*)(Display*, char*));
334 extern int loadimage(Image*, Rectangle, uchar*, int);
335 extern int cloadimage(Image*, Rectangle, uchar*, int);
336 extern int getwindow(Display*, int);
337 extern int gengetwindow(Display*, char*, Image**, Screen**, int);
338 extern Image* readimage(Display*, int, int);
339 extern Image* creadimage(Display*, int, int);
340 extern int unloadimage(Image*, Rectangle, uchar*, int);
341 extern int wordsperline(Rectangle, int);
342 extern int writeimage(int, Image*, int);
343 extern Image* namedimage(Display*, char*);
344 extern int nameimage(Image*, char*, int);
345 extern Image* allocimagemix(Display*, ulong, ulong);
346
347 /*
348 * Colors
349 */
350 extern void readcolmap(Display*, RGB*);
351 extern void writecolmap(Display*, RGB*);
352 extern ulong setalpha(ulong, uchar);
353
354 /*
355 * Windows
356 */
357 extern Screen* allocscreen(Image*, Image*, int);
358 extern Image* _allocwindow(Image*, Screen*, Rectangle, int, ulong);
359 extern Image* allocwindow(Screen*, Rectangle, int, ulong);
360 extern void bottomnwindows(Image**, int);
361 extern void bottomwindow(Image*);
362 extern int freescreen(Screen*);
363 extern Screen* publicscreen(Display*, int, ulong);
364 extern void topnwindows(Image**, int);
365 extern void topwindow(Image*);
366 extern int originwindow(Image*, Point, Point);
367
368 /*
369 * Geometry
370 */
371 extern Point Pt(int, int);
372 extern Rectangle Rect(int, int, int, int);
373 extern Rectangle Rpt(Point, Point);
374 extern Point addpt(Point, Point);
375 extern Point subpt(Point, Point);
376 extern Point divpt(Point, int);
377 extern Point mulpt(Point, int);
378 extern int eqpt(Point, Point);
379 extern int eqrect(Rectangle, Rectangle);
380 extern Rectangle insetrect(Rectangle, int);
381 extern Rectangle rectaddpt(Rectangle, Point);
382 extern Rectangle rectsubpt(Rectangle, Point);
383 extern Rectangle canonrect(Rectangle);
384 extern int rectXrect(Rectangle, Rectangle);
385 extern int rectinrect(Rectangle, Rectangle);
386 extern void combinerect(Rectangle*, Rectangle);
387 extern int rectclip(Rectangle*, Rectangle);
388 extern int ptinrect(Point, Rectangle);
389 extern void replclipr(Image*, int, Rectangle);
390 extern int drawreplxy(int, int, int); /* used to be drawsetxy */
391 extern Point drawrepl(Rectangle, Point);
392 extern int rgb2cmap(int, int, int);
393 extern int cmap2rgb(int);
394 extern int cmap2rgba(int);
395 extern void icossin(int, int*, int*);
396 extern void icossin2(int, int, int*, int*);
397
398 /*
399 * Graphics
400 */
401 extern void draw(Image*, Rectangle, Image*, Image*, Point);
402 extern void drawop(Image*, Rectangle, Image*, Image*, Point, Drawop);
403 extern void gendraw(Image*, Rectangle, Image*, Point, Image*, Point);
404 extern void gendrawop(Image*, Rectangle, Image*, Point, Image*, Point, Drawop);
405 extern void line(Image*, Point, Point, int, int, int, Image*, Point);
406 extern void lineop(Image*, Point, Point, int, int, int, Image*, Point, Drawop);
407 extern void poly(Image*, Point*, int, int, int, int, Image*, Point);
408 extern void polyop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
409 extern void fillpoly(Image*, Point*, int, int, Image*, Point);
410 extern void fillpolyop(Image*, Point*, int, int, Image*, Point, Drawop);
411 extern Point string(Image*, Point, Image*, Point, Font*, char*);
412 extern Point stringop(Image*, Point, Image*, Point, Font*, char*, Drawop);
413 extern Point stringn(Image*, Point, Image*, Point, Font*, char*, int);
414 extern Point stringnop(Image*, Point, Image*, Point, Font*, char*, int, Drawop);
415 extern Point runestring(Image*, Point, Image*, Point, Font*, Rune*);
416 extern Point runestringop(Image*, Point, Image*, Point, Font*, Rune*, Drawop);
417 extern Point runestringn(Image*, Point, Image*, Point, Font*, Rune*, int);
418 extern Point runestringnop(Image*, Point, Image*, Point, Font*, Rune*, int, Drawop);
419 extern Point stringbg(Image*, Point, Image*, Point, Font*, char*, Image*, Point);
420 extern Point stringbgop(Image*, Point, Image*, Point, Font*, char*, Image*, Point, Drawop);
421 extern Point stringnbg(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point);
422 extern Point stringnbgop(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point, Drawop);
423 extern Point runestringbg(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point);
424 extern Point runestringbgop(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point, Drawop);
425 extern Point runestringnbg(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point);
426 extern Point runestringnbgop(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point, Drawop);
427 extern Point _string(Image*, Point, Image*, Point, Font*, char*, Rune*, int, Rectangle, Image*, Point, Drawop);
428 extern Point stringsubfont(Image*, Point, Image*, Subfont*, char*);
429 extern int bezier(Image*, Point, Point, Point, Point, int, int, int, Image*, Point);
430 extern int bezierop(Image*, Point, Point, Point, Point, int, int, int, Image*, Point, Drawop);
431 extern int bezspline(Image*, Point*, int, int, int, int, Image*, Point);
432 extern int bezsplineop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
433 extern int bezsplinepts(Point*, int, Point**);
434 extern int fillbezier(Image*, Point, Point, Point, Point, int, Image*, Point);
435 extern int fillbezierop(Image*, Point, Point, Point, Point, int, Image*, Point, Drawop);
436 extern int fillbezspline(Image*, Point*, int, int, Image*, Point);
437 extern int fillbezsplineop(Image*, Point*, int, int, Image*, Point, Drawop);
438 extern void ellipse(Image*, Point, int, int, int, Image*, Point);
439 extern void ellipseop(Image*, Point, int, int, int, Image*, Point, Drawop);
440 extern void fillellipse(Image*, Point, int, int, Image*, Point);
441 extern void fillellipseop(Image*, Point, int, int, Image*, Point, Drawop);
442 extern void arc(Image*, Point, int, int, int, Image*, Point, int, int);
443 extern void arcop(Image*, Point, int, int, int, Image*, Point, int, int, Drawop);
444 extern void fillarc(Image*, Point, int, int, Image*, Point, int, int);
445 extern void fillarcop(Image*, Point, int, int, Image*, Point, int, int, Drawop);
446 extern void border(Image*, Rectangle, int, Image*, Point);
447 extern void borderop(Image*, Rectangle, int, Image*, Point, Drawop);
448
449 /*
450 * Font management
451 */
452 extern Font* openfont(Display*, char*);
453 extern Font* buildfont(Display*, char*, char*);
454 extern void freefont(Font*);
455 extern Font* mkfont(Subfont*, Rune);
456 extern int cachechars(Font*, char**, Rune**, ushort*, int, int*, char**);
457 extern void agefont(Font*);
458 extern Subfont* allocsubfont(char*, int, int, int, Fontchar*, Image*);
459 extern Subfont* lookupsubfont(Display*, char*);
460 extern void installsubfont(char*, Subfont*);
461 extern void uninstallsubfont(Subfont*);
462 extern void freesubfont(Subfont*);
463 extern Subfont* readsubfont(Display*, char*, int, int);
464 extern Subfont* readsubfonti(Display*, char*, int, Image*, int);
465 extern int writesubfont(int, Subfont*);
466 extern void _unpackinfo(Fontchar*, uchar*, int);
467 extern Point stringsize(Font*, char*);
468 extern int stringwidth(Font*, char*);
469 extern int stringnwidth(Font*, char*, int);
470 extern Point runestringsize(Font*, Rune*);
471 extern int runestringwidth(Font*, Rune*);
472 extern int runestringnwidth(Font*, Rune*, int);
473 extern Point strsubfontwidth(Subfont*, char*);
474 extern int loadchar(Font*, Rune, Cacheinfo*, int, int, char**);
475 extern char* subfontname(char*, char*, int);
476 extern Subfont* _getsubfont(Display*, char*);
477 extern Subfont* getdefont(Display*);
478 extern void lockdisplay(Display*);
479 extern void unlockdisplay(Display*);
480 extern int drawlsetrefresh(ulong, int, void*, void*);
481
482 /*
483 * Predefined
484 */
485 extern uchar defontdata[];
486 extern int sizeofdefont;
487 extern Point ZP;
488 extern Rectangle ZR;
489
490 /*
491 * Set up by initdraw()
492 */
493 extern Font *font;
494 extern int _cursorfd;
495 extern int _drawdebug; /* set to 1 to see errors from flushimage */
496 extern void _setdrawop(Display*, Drawop);
497
498 #define BGSHORT(p) (((p)[0]<<0) | ((p)[1]<<8))
499 #define BGLONG(p) ((BGSHORT(p)<<0) | (BGSHORT(p+2)<<16))
500 #define BPSHORT(p, v) ((p)[0]=(v), (p)[1]=((v)>>8))
501 #define BPLONG(p, v) (BPSHORT(p, (v)), BPSHORT(p+2, (v)>>16))
502
503 /*
504 * Compressed image file parameters and helper routines
505 */
506 #define NMATCH 3 /* shortest match possible */
507 #define NRUN (NMATCH+31) /* longest match possible */
508 #define NMEM 1024 /* window size */
509 #define NDUMP 128 /* maximum length of dump */
510 #define NCBLOCK 6000 /* size of compressed blocks */
511 extern void _twiddlecompressed(uchar*, int);
512 extern int _compblocksize(Rectangle, int);
513
514 /* XXX backwards helps; should go */
515 extern ulong drawld2chan[];
516 extern void drawsetdebug(int);