1 84b1cb73 2003-09-30 devnull #include <u.h>
2 84b1cb73 2003-09-30 devnull #include <libc.h>
3 84b1cb73 2003-09-30 devnull #include <draw.h>
4 84b1cb73 2003-09-30 devnull #include <thread.h>
5 84b1cb73 2003-09-30 devnull #include <mouse.h>
6 84b1cb73 2003-09-30 devnull #include <cursor.h>
7 84b1cb73 2003-09-30 devnull #include <keyboard.h>
8 84b1cb73 2003-09-30 devnull #include <frame.h>
9 84b1cb73 2003-09-30 devnull #include "flayer.h"
10 84b1cb73 2003-09-30 devnull #include "samterm.h"
12 84b1cb73 2003-09-30 devnull #define DELTA 10
14 84b1cb73 2003-09-30 devnull static Flayer **llist; /* front to back */
15 84b1cb73 2003-09-30 devnull static int nllist;
16 84b1cb73 2003-09-30 devnull static int nlalloc;
17 84b1cb73 2003-09-30 devnull static Rectangle lDrect;
19 84b1cb73 2003-09-30 devnull Vis visibility(Flayer *);
20 84b1cb73 2003-09-30 devnull void newvisibilities(int);
21 84b1cb73 2003-09-30 devnull void llinsert(Flayer*);
22 84b1cb73 2003-09-30 devnull void lldelete(Flayer*);
24 84b1cb73 2003-09-30 devnull Image *maincols[NCOL];
25 84b1cb73 2003-09-30 devnull Image *cmdcols[NCOL];
28 84b1cb73 2003-09-30 devnull flstart(Rectangle r)
30 84b1cb73 2003-09-30 devnull lDrect = r;
32 84b1cb73 2003-09-30 devnull /* Main text is yellowish */
33 84b1cb73 2003-09-30 devnull maincols[BACK] = allocimagemix(display, DPaleyellow, DWhite);
34 84b1cb73 2003-09-30 devnull maincols[HIGH] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DDarkyellow);
35 84b1cb73 2003-09-30 devnull maincols[BORD] = allocimage(display, Rect(0,0,2,2), screen->chan, 1, DYellowgreen);
36 84b1cb73 2003-09-30 devnull maincols[TEXT] = display->black;
37 84b1cb73 2003-09-30 devnull maincols[HTEXT] = display->black;
39 84b1cb73 2003-09-30 devnull /* Command text is blueish */
40 84b1cb73 2003-09-30 devnull cmdcols[BACK] = allocimagemix(display, DPalebluegreen, DWhite);
41 84b1cb73 2003-09-30 devnull cmdcols[HIGH] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DPalegreygreen);
42 84b1cb73 2003-09-30 devnull cmdcols[BORD] = allocimage(display, Rect(0,0,2,2), screen->chan, 1, DPurpleblue);
43 84b1cb73 2003-09-30 devnull cmdcols[TEXT] = display->black;
44 84b1cb73 2003-09-30 devnull cmdcols[HTEXT] = display->black;
48 84b1cb73 2003-09-30 devnull flnew(Flayer *l, Rune *(*fn)(Flayer*, long, ulong*), int u0, void *u1)
50 84b1cb73 2003-09-30 devnull if(nllist == nlalloc){
51 84b1cb73 2003-09-30 devnull nlalloc += DELTA;
52 84b1cb73 2003-09-30 devnull llist = realloc(llist, nlalloc*sizeof(Flayer**));
53 84b1cb73 2003-09-30 devnull if(llist == 0)
54 84b1cb73 2003-09-30 devnull panic("flnew");
56 84b1cb73 2003-09-30 devnull l->textfn = fn;
57 84b1cb73 2003-09-30 devnull l->user0 = u0;
58 84b1cb73 2003-09-30 devnull l->user1 = u1;
59 84b1cb73 2003-09-30 devnull l->lastsr = ZR;
60 84b1cb73 2003-09-30 devnull llinsert(l);
63 84b1cb73 2003-09-30 devnull Rectangle
64 84b1cb73 2003-09-30 devnull flrect(Flayer *l, Rectangle r)
66 84b1cb73 2003-09-30 devnull rectclip(&r, lDrect);
67 84b1cb73 2003-09-30 devnull l->entire = r;
68 84b1cb73 2003-09-30 devnull l->scroll = insetrect(r, FLMARGIN);
69 84b1cb73 2003-09-30 devnull r.min.x =
70 84b1cb73 2003-09-30 devnull l->scroll.max.x = r.min.x+FLMARGIN+FLSCROLLWID+(FLGAP-FLMARGIN);
71 84b1cb73 2003-09-30 devnull return r;
75 84b1cb73 2003-09-30 devnull flinit(Flayer *l, Rectangle r, Font *ft, Image **cols)
77 84b1cb73 2003-09-30 devnull lldelete(l);
78 84b1cb73 2003-09-30 devnull llinsert(l);
79 84b1cb73 2003-09-30 devnull l->visible = All;
80 84b1cb73 2003-09-30 devnull l->origin = l->p0 = l->p1 = 0;
81 84b1cb73 2003-09-30 devnull frinit(&l->f, insetrect(flrect(l, r), FLMARGIN), ft, screen, cols);
82 84b1cb73 2003-09-30 devnull l->f.maxtab = maxtab*stringwidth(ft, "0");
83 84b1cb73 2003-09-30 devnull newvisibilities(1);
84 84b1cb73 2003-09-30 devnull draw(screen, l->entire, l->f.cols[BACK], nil, ZP);
85 84b1cb73 2003-09-30 devnull scrdraw(l, 0L);
86 84b1cb73 2003-09-30 devnull flborder(l, 0);
90 84b1cb73 2003-09-30 devnull flclose(Flayer *l)
92 84b1cb73 2003-09-30 devnull if(l->visible == All)
93 84b1cb73 2003-09-30 devnull draw(screen, l->entire, display->white, nil, ZP);
94 84b1cb73 2003-09-30 devnull else if(l->visible == Some){
95 84b1cb73 2003-09-30 devnull if(l->f.b == 0)
96 84b1cb73 2003-09-30 devnull l->f.b = allocimage(display, l->entire, screen->chan, 0, DNofill);
97 84b1cb73 2003-09-30 devnull if(l->f.b){
98 84b1cb73 2003-09-30 devnull draw(l->f.b, l->entire, display->white, nil, ZP);
99 84b1cb73 2003-09-30 devnull flrefresh(l, l->entire, 0);
102 84b1cb73 2003-09-30 devnull frclear(&l->f, 1);
103 84b1cb73 2003-09-30 devnull lldelete(l);
104 84b1cb73 2003-09-30 devnull if(l->f.b && l->visible!=All)
105 84b1cb73 2003-09-30 devnull freeimage(l->f.b);
106 84b1cb73 2003-09-30 devnull l->textfn = 0;
107 84b1cb73 2003-09-30 devnull newvisibilities(1);
111 84b1cb73 2003-09-30 devnull flborder(Flayer *l, int wide)
113 84b1cb73 2003-09-30 devnull if(flprepare(l)){
114 84b1cb73 2003-09-30 devnull border(l->f.b, l->entire, FLMARGIN, l->f.cols[BACK], ZP);
115 84b1cb73 2003-09-30 devnull border(l->f.b, l->entire, wide? FLMARGIN : 1, l->f.cols[BORD], ZP);
116 84b1cb73 2003-09-30 devnull if(l->visible==Some)
117 84b1cb73 2003-09-30 devnull flrefresh(l, l->entire, 0);
121 84b1cb73 2003-09-30 devnull Flayer *
122 84b1cb73 2003-09-30 devnull flwhich(Point p)
126 84b1cb73 2003-09-30 devnull if(p.x==0 && p.y==0)
127 84b1cb73 2003-09-30 devnull return nllist? llist[0] : 0;
128 84b1cb73 2003-09-30 devnull for(i=0; i<nllist; i++)
129 84b1cb73 2003-09-30 devnull if(ptinrect(p, llist[i]->entire))
130 84b1cb73 2003-09-30 devnull return llist[i];
131 84b1cb73 2003-09-30 devnull return 0;
135 84b1cb73 2003-09-30 devnull flupfront(Flayer *l)
137 84b1cb73 2003-09-30 devnull int v = l->visible;
139 84b1cb73 2003-09-30 devnull lldelete(l);
140 84b1cb73 2003-09-30 devnull llinsert(l);
141 84b1cb73 2003-09-30 devnull if(v!=All)
142 84b1cb73 2003-09-30 devnull newvisibilities(0);
146 84b1cb73 2003-09-30 devnull newvisibilities(int redraw)
147 84b1cb73 2003-09-30 devnull /* if redraw false, we know it's a flupfront, and needn't
148 84b1cb73 2003-09-30 devnull * redraw anyone becoming partially covered */
152 84b1cb73 2003-09-30 devnull Flayer *l;
154 84b1cb73 2003-09-30 devnull for(i = 0; i<nllist; i++){
155 84b1cb73 2003-09-30 devnull l = llist[i];
156 84b1cb73 2003-09-30 devnull l->lastsr = ZR; /* make sure scroll bar gets redrawn */
157 84b1cb73 2003-09-30 devnull ov = l->visible;
158 84b1cb73 2003-09-30 devnull l->visible = visibility(l);
159 84b1cb73 2003-09-30 devnull #define V(a, b) (((a)<<2)|((b)))
160 84b1cb73 2003-09-30 devnull switch(V(ov, l->visible)){
161 84b1cb73 2003-09-30 devnull case V(Some, None):
162 84b1cb73 2003-09-30 devnull if(l->f.b)
163 84b1cb73 2003-09-30 devnull freeimage(l->f.b);
164 84b1cb73 2003-09-30 devnull case V(All, None):
165 84b1cb73 2003-09-30 devnull case V(All, Some):
166 84b1cb73 2003-09-30 devnull l->f.b = 0;
167 84b1cb73 2003-09-30 devnull frclear(&l->f, 0);
170 84b1cb73 2003-09-30 devnull case V(Some, Some):
171 84b1cb73 2003-09-30 devnull if(l->f.b==0 && redraw)
172 84b1cb73 2003-09-30 devnull case V(None, Some):
173 84b1cb73 2003-09-30 devnull flprepare(l);
174 84b1cb73 2003-09-30 devnull if(l->f.b && redraw){
175 84b1cb73 2003-09-30 devnull flrefresh(l, l->entire, 0);
176 84b1cb73 2003-09-30 devnull freeimage(l->f.b);
177 84b1cb73 2003-09-30 devnull l->f.b = 0;
178 84b1cb73 2003-09-30 devnull frclear(&l->f, 0);
180 84b1cb73 2003-09-30 devnull case V(None, None):
181 84b1cb73 2003-09-30 devnull case V(All, All):
184 84b1cb73 2003-09-30 devnull case V(Some, All):
185 84b1cb73 2003-09-30 devnull if(l->f.b){
186 84b1cb73 2003-09-30 devnull draw(screen, l->entire, l->f.b, nil, l->entire.min);
187 84b1cb73 2003-09-30 devnull freeimage(l->f.b);
188 84b1cb73 2003-09-30 devnull l->f.b = screen;
191 84b1cb73 2003-09-30 devnull case V(None, All):
192 84b1cb73 2003-09-30 devnull flprepare(l);
195 84b1cb73 2003-09-30 devnull if(ov==None && l->visible!=None)
196 84b1cb73 2003-09-30 devnull flnewlyvisible(l);
201 84b1cb73 2003-09-30 devnull llinsert(Flayer *l)
204 84b1cb73 2003-09-30 devnull for(i=nllist; i>0; --i)
205 84b1cb73 2003-09-30 devnull llist[i]=llist[i-1];
206 84b1cb73 2003-09-30 devnull llist[0]=l;
207 84b1cb73 2003-09-30 devnull nllist++;
211 84b1cb73 2003-09-30 devnull lldelete(Flayer *l)
215 84b1cb73 2003-09-30 devnull for(i=0; i<nllist; i++)
216 84b1cb73 2003-09-30 devnull if(llist[i]==l){
217 84b1cb73 2003-09-30 devnull --nllist;
218 84b1cb73 2003-09-30 devnull for(; i<nllist; i++)
219 84b1cb73 2003-09-30 devnull llist[i] = llist[i+1];
222 84b1cb73 2003-09-30 devnull panic("lldelete");
226 84b1cb73 2003-09-30 devnull flinsert(Flayer *l, Rune *sp, Rune *ep, long p0)
228 84b1cb73 2003-09-30 devnull if(flprepare(l)){
229 84b1cb73 2003-09-30 devnull frinsert(&l->f, sp, ep, p0-l->origin);
230 84b1cb73 2003-09-30 devnull scrdraw(l, scrtotal(l));
231 84b1cb73 2003-09-30 devnull if(l->visible==Some)
232 84b1cb73 2003-09-30 devnull flrefresh(l, l->entire, 0);
237 84b1cb73 2003-09-30 devnull fldelete(Flayer *l, long p0, long p1)
239 84b1cb73 2003-09-30 devnull if(flprepare(l)){
240 84b1cb73 2003-09-30 devnull p0 -= l->origin;
241 84b1cb73 2003-09-30 devnull if(p0 < 0)
243 84b1cb73 2003-09-30 devnull p1 -= l->origin;
244 84b1cb73 2003-09-30 devnull if(p1<0)
246 84b1cb73 2003-09-30 devnull frdelete(&l->f, p0, p1);
247 84b1cb73 2003-09-30 devnull scrdraw(l, scrtotal(l));
248 84b1cb73 2003-09-30 devnull if(l->visible==Some)
249 84b1cb73 2003-09-30 devnull flrefresh(l, l->entire, 0);
254 84b1cb73 2003-09-30 devnull flselect(Flayer *l)
256 84b1cb73 2003-09-30 devnull int ret = 0;
257 84b1cb73 2003-09-30 devnull if(l->visible!=All)
258 84b1cb73 2003-09-30 devnull flupfront(l);
259 84b1cb73 2003-09-30 devnull frselect(&l->f, mousectl);
260 84b1cb73 2003-09-30 devnull if(l->f.p0==l->f.p1){
261 84b1cb73 2003-09-30 devnull if(mousep->msec-l->click<Clicktime && l->f.p0+l->origin==l->p0){
262 84b1cb73 2003-09-30 devnull ret = 1;
263 84b1cb73 2003-09-30 devnull l->click = 0;
265 84b1cb73 2003-09-30 devnull l->click = mousep->msec;
267 84b1cb73 2003-09-30 devnull l->click = 0;
268 84b1cb73 2003-09-30 devnull l->p0 = l->f.p0+l->origin, l->p1 = l->f.p1+l->origin;
269 84b1cb73 2003-09-30 devnull return ret;
273 84b1cb73 2003-09-30 devnull flsetselect(Flayer *l, long p0, long p1)
275 84b1cb73 2003-09-30 devnull ulong fp0, fp1;
277 84b1cb73 2003-09-30 devnull l->click = 0;
278 84b1cb73 2003-09-30 devnull if(l->visible==None || !flprepare(l)){
279 84b1cb73 2003-09-30 devnull l->p0 = p0, l->p1 = p1;
282 84b1cb73 2003-09-30 devnull l->p0 = p0, l->p1 = p1;
283 84b1cb73 2003-09-30 devnull flfp0p1(l, &fp0, &fp1);
284 84b1cb73 2003-09-30 devnull if(fp0==l->f.p0 && fp1==l->f.p1)
287 84b1cb73 2003-09-30 devnull if(fp1<=l->f.p0 || fp0>=l->f.p1 || l->f.p0==l->f.p1 || fp0==fp1){
288 84b1cb73 2003-09-30 devnull /* no overlap or trivial repainting */
289 84b1cb73 2003-09-30 devnull frdrawsel(&l->f, frptofchar(&l->f, l->f.p0), l->f.p0, l->f.p1, 0);
290 84b1cb73 2003-09-30 devnull frdrawsel(&l->f, frptofchar(&l->f, fp0), fp0, fp1, 1);
291 84b1cb73 2003-09-30 devnull goto Refresh;
293 84b1cb73 2003-09-30 devnull /* the current selection and the desired selection overlap and are both non-empty */
294 84b1cb73 2003-09-30 devnull if(fp0 < l->f.p0){
295 84b1cb73 2003-09-30 devnull /* extend selection backwards */
296 84b1cb73 2003-09-30 devnull frdrawsel(&l->f, frptofchar(&l->f, fp0), fp0, l->f.p0, 1);
297 84b1cb73 2003-09-30 devnull }else if(fp0 > l->f.p0){
298 84b1cb73 2003-09-30 devnull /* trim first part of selection */
299 84b1cb73 2003-09-30 devnull frdrawsel(&l->f, frptofchar(&l->f, l->f.p0), l->f.p0, fp0, 0);
301 84b1cb73 2003-09-30 devnull if(fp1 > l->f.p1){
302 84b1cb73 2003-09-30 devnull /* extend selection forwards */
303 84b1cb73 2003-09-30 devnull frdrawsel(&l->f, frptofchar(&l->f, l->f.p1), l->f.p1, fp1, 1);
304 84b1cb73 2003-09-30 devnull }else if(fp1 < l->f.p1){
305 84b1cb73 2003-09-30 devnull /* trim last part of selection */
306 84b1cb73 2003-09-30 devnull frdrawsel(&l->f, frptofchar(&l->f, fp1), fp1, l->f.p1, 0);
309 84b1cb73 2003-09-30 devnull Refresh:
310 84b1cb73 2003-09-30 devnull l->f.p0 = fp0;
311 84b1cb73 2003-09-30 devnull l->f.p1 = fp1;
312 84b1cb73 2003-09-30 devnull if(l->visible==Some)
313 84b1cb73 2003-09-30 devnull flrefresh(l, l->entire, 0);
317 84b1cb73 2003-09-30 devnull flfp0p1(Flayer *l, ulong *pp0, ulong *pp1)
319 84b1cb73 2003-09-30 devnull long p0 = l->p0-l->origin, p1 = l->p1-l->origin;
321 84b1cb73 2003-09-30 devnull if(p0 < 0)
323 84b1cb73 2003-09-30 devnull if(p1 < 0)
325 84b1cb73 2003-09-30 devnull if(p0 > l->f.nchars)
326 84b1cb73 2003-09-30 devnull p0 = l->f.nchars;
327 84b1cb73 2003-09-30 devnull if(p1 > l->f.nchars)
328 84b1cb73 2003-09-30 devnull p1 = l->f.nchars;
329 84b1cb73 2003-09-30 devnull *pp0 = p0;
330 84b1cb73 2003-09-30 devnull *pp1 = p1;
333 84b1cb73 2003-09-30 devnull Rectangle
334 84b1cb73 2003-09-30 devnull rscale(Rectangle r, Point old, Point new)
336 84b1cb73 2003-09-30 devnull r.min.x = r.min.x*new.x/old.x;
337 84b1cb73 2003-09-30 devnull r.min.y = r.min.y*new.y/old.y;
338 84b1cb73 2003-09-30 devnull r.max.x = r.max.x*new.x/old.x;
339 84b1cb73 2003-09-30 devnull r.max.y = r.max.y*new.y/old.y;
340 84b1cb73 2003-09-30 devnull return r;
344 84b1cb73 2003-09-30 devnull flresize(Rectangle dr)
347 84b1cb73 2003-09-30 devnull Flayer *l;
348 84b1cb73 2003-09-30 devnull Frame *f;
349 84b1cb73 2003-09-30 devnull Rectangle r, olDrect;
350 84b1cb73 2003-09-30 devnull int move;
352 84b1cb73 2003-09-30 devnull olDrect = lDrect;
353 84b1cb73 2003-09-30 devnull lDrect = dr;
354 84b1cb73 2003-09-30 devnull move = 0;
355 84b1cb73 2003-09-30 devnull /* no moving on rio; must repaint */
356 84b1cb73 2003-09-30 devnull if(0 && Dx(dr)==Dx(olDrect) && Dy(dr)==Dy(olDrect))
357 84b1cb73 2003-09-30 devnull move = 1;
359 84b1cb73 2003-09-30 devnull draw(screen, lDrect, display->white, nil, ZP);
360 84b1cb73 2003-09-30 devnull for(i=0; i<nllist; i++){
361 84b1cb73 2003-09-30 devnull l = llist[i];
362 84b1cb73 2003-09-30 devnull l->lastsr = ZR;
363 84b1cb73 2003-09-30 devnull f = &l->f;
364 84b1cb73 2003-09-30 devnull if(move)
365 84b1cb73 2003-09-30 devnull r = rectaddpt(rectsubpt(l->entire, olDrect.min), dr.min);
367 84b1cb73 2003-09-30 devnull r = rectaddpt(rscale(rectsubpt(l->entire, olDrect.min),
368 84b1cb73 2003-09-30 devnull subpt(olDrect.max, olDrect.min),
369 84b1cb73 2003-09-30 devnull subpt(dr.max, dr.min)), dr.min);
370 84b1cb73 2003-09-30 devnull if(l->visible==Some && f->b){
371 84b1cb73 2003-09-30 devnull freeimage(f->b);
372 84b1cb73 2003-09-30 devnull frclear(f, 0);
374 84b1cb73 2003-09-30 devnull f->b = 0;
375 84b1cb73 2003-09-30 devnull if(l->visible!=None)
376 84b1cb73 2003-09-30 devnull frclear(f, 0);
378 84b1cb73 2003-09-30 devnull if(!rectclip(&r, dr))
379 84b1cb73 2003-09-30 devnull panic("flresize");
380 84b1cb73 2003-09-30 devnull if(r.max.x-r.min.x<100)
381 84b1cb73 2003-09-30 devnull r.min.x = dr.min.x;
382 84b1cb73 2003-09-30 devnull if(r.max.x-r.min.x<100)
383 84b1cb73 2003-09-30 devnull r.max.x = dr.max.x;
384 84b1cb73 2003-09-30 devnull if(r.max.y-r.min.y<2*FLMARGIN+f->font->height)
385 84b1cb73 2003-09-30 devnull r.min.y = dr.min.y;
386 84b1cb73 2003-09-30 devnull if(r.max.y-r.min.y<2*FLMARGIN+f->font->height)
387 84b1cb73 2003-09-30 devnull r.max.y = dr.max.y;
388 84b1cb73 2003-09-30 devnull if(!move)
389 84b1cb73 2003-09-30 devnull l->visible = None;
390 84b1cb73 2003-09-30 devnull frsetrects(f, insetrect(flrect(l, r), FLMARGIN), f->b);
391 84b1cb73 2003-09-30 devnull if(!move && f->b)
392 84b1cb73 2003-09-30 devnull scrdraw(l, scrtotal(l));
394 84b1cb73 2003-09-30 devnull newvisibilities(1);
398 84b1cb73 2003-09-30 devnull flprepare(Flayer *l)
400 84b1cb73 2003-09-30 devnull Frame *f;
401 84b1cb73 2003-09-30 devnull ulong n;
402 84b1cb73 2003-09-30 devnull Rune *r;
404 84b1cb73 2003-09-30 devnull if(l->visible == None)
405 84b1cb73 2003-09-30 devnull return 0;
406 84b1cb73 2003-09-30 devnull f = &l->f;
407 84b1cb73 2003-09-30 devnull if(f->b == 0){
408 84b1cb73 2003-09-30 devnull if(l->visible == All)
409 84b1cb73 2003-09-30 devnull f->b = screen;
410 84b1cb73 2003-09-30 devnull else if((f->b = allocimage(display, l->entire, screen->chan, 0, 0))==0)
411 84b1cb73 2003-09-30 devnull return 0;
412 84b1cb73 2003-09-30 devnull draw(f->b, l->entire, f->cols[BACK], nil, ZP);
413 84b1cb73 2003-09-30 devnull border(f->b, l->entire, l==llist[0]? FLMARGIN : 1, f->cols[BORD], ZP);
414 84b1cb73 2003-09-30 devnull n = f->nchars;
415 84b1cb73 2003-09-30 devnull frinit(f, f->entire, f->font, f->b, 0);
416 84b1cb73 2003-09-30 devnull f->maxtab = maxtab*stringwidth(f->font, "0");
417 84b1cb73 2003-09-30 devnull r = (*l->textfn)(l, n, &n);
418 84b1cb73 2003-09-30 devnull frinsert(f, r, r+n, (ulong)0);
419 84b1cb73 2003-09-30 devnull frdrawsel(f, frptofchar(f, f->p0), f->p0, f->p1, 0);
420 84b1cb73 2003-09-30 devnull flfp0p1(l, &f->p0, &f->p1);
421 84b1cb73 2003-09-30 devnull frdrawsel(f, frptofchar(f, f->p0), f->p0, f->p1, 1);
422 84b1cb73 2003-09-30 devnull l->lastsr = ZR;
423 84b1cb73 2003-09-30 devnull scrdraw(l, scrtotal(l));
425 84b1cb73 2003-09-30 devnull return 1;
428 84b1cb73 2003-09-30 devnull static int somevis, someinvis, justvis;
431 84b1cb73 2003-09-30 devnull visibility(Flayer *l)
433 84b1cb73 2003-09-30 devnull somevis = someinvis = 0;
434 84b1cb73 2003-09-30 devnull justvis = 1;
435 84b1cb73 2003-09-30 devnull flrefresh(l, l->entire, 0);
436 84b1cb73 2003-09-30 devnull justvis = 0;
437 84b1cb73 2003-09-30 devnull if(somevis==0)
438 84b1cb73 2003-09-30 devnull return None;
439 84b1cb73 2003-09-30 devnull if(someinvis==0)
440 84b1cb73 2003-09-30 devnull return All;
441 84b1cb73 2003-09-30 devnull return Some;
445 84b1cb73 2003-09-30 devnull flrefresh(Flayer *l, Rectangle r, int i)
447 84b1cb73 2003-09-30 devnull Flayer *t;
448 84b1cb73 2003-09-30 devnull Rectangle s;
451 84b1cb73 2003-09-30 devnull if((t=llist[i++]) == l){
452 84b1cb73 2003-09-30 devnull if(!justvis)
453 84b1cb73 2003-09-30 devnull draw(screen, r, l->f.b, nil, r.min);
454 84b1cb73 2003-09-30 devnull somevis = 1;
456 84b1cb73 2003-09-30 devnull if(!rectXrect(t->entire, r))
457 84b1cb73 2003-09-30 devnull goto Top; /* avoid stacking unnecessarily */
458 84b1cb73 2003-09-30 devnull if(t->entire.min.x>r.min.x){
460 84b1cb73 2003-09-30 devnull s.max.x = t->entire.min.x;
461 84b1cb73 2003-09-30 devnull flrefresh(l, s, i);
462 84b1cb73 2003-09-30 devnull r.min.x = t->entire.min.x;
464 84b1cb73 2003-09-30 devnull if(t->entire.min.y>r.min.y){
466 84b1cb73 2003-09-30 devnull s.max.y = t->entire.min.y;
467 84b1cb73 2003-09-30 devnull flrefresh(l, s, i);
468 84b1cb73 2003-09-30 devnull r.min.y = t->entire.min.y;
470 84b1cb73 2003-09-30 devnull if(t->entire.max.x<r.max.x){
472 84b1cb73 2003-09-30 devnull s.min.x = t->entire.max.x;
473 84b1cb73 2003-09-30 devnull flrefresh(l, s, i);
474 84b1cb73 2003-09-30 devnull r.max.x = t->entire.max.x;
476 84b1cb73 2003-09-30 devnull if(t->entire.max.y<r.max.y){
478 84b1cb73 2003-09-30 devnull s.min.y = t->entire.max.y;
479 84b1cb73 2003-09-30 devnull flrefresh(l, s, i);
480 84b1cb73 2003-09-30 devnull r.max.y = t->entire.max.y;
482 84b1cb73 2003-09-30 devnull /* remaining piece of r is blocked by t; forget about it */
483 84b1cb73 2003-09-30 devnull someinvis = 1;
