2.5
[blender.git] / source / blender / editors / screen / screen_edit.c
1 /**
2  * $Id:
3  *
4  * ***** BEGIN GPL LICENSE BLOCK *****
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version. 
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software Foundation,
18  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19  *
20  * The Original Code is Copyright (C) 2008 Blender Foundation.
21  * All rights reserved.
22  *
23  *
24  * ***** END GPL LICENSE BLOCK *****
25  */
26
27 #include <string.h>
28
29 #include "MEM_guardedalloc.h"
30
31 #include "DNA_vec_types.h"
32 #include "DNA_scene_types.h"
33 #include "DNA_screen_types.h"
34 #include "DNA_texture_types.h"
35 #include "DNA_userdef_types.h"
36
37 #include "BLI_blenlib.h"
38
39 #include "BKE_context.h"
40 #include "BKE_global.h"
41 #include "BKE_library.h"
42 #include "BKE_main.h"
43 #include "BKE_node.h"
44 #include "BKE_screen.h"
45 #include "BKE_scene.h"
46 #include "BKE_utildefines.h"
47
48 #include "BIF_gl.h"
49 #include "BIF_glutil.h"
50
51 #include "WM_api.h"
52 #include "WM_types.h"
53
54 #include "ED_screen.h"
55 #include "ED_screen_types.h"
56
57 #include "wm_subwindow.h"
58
59 #include "screen_intern.h"      /* own module include */
60
61
62 /* ******************* screen vert, edge, area managing *********************** */
63
64 static ScrVert *screen_addvert(bScreen *sc, short x, short y)
65 {
66         ScrVert *sv= MEM_callocN(sizeof(ScrVert), "addscrvert");
67         sv->vec.x= x;
68         sv->vec.y= y;
69         
70         BLI_addtail(&sc->vertbase, sv);
71         return sv;
72 }
73
74 static void sortscrvert(ScrVert **v1, ScrVert **v2)
75 {
76         ScrVert *tmp;
77         
78         if (*v1 > *v2) {
79                 tmp= *v1;
80                 *v1= *v2;
81                 *v2= tmp;       
82         }
83 }
84
85 static ScrEdge *screen_addedge(bScreen *sc, ScrVert *v1, ScrVert *v2)
86 {
87         ScrEdge *se= MEM_callocN(sizeof(ScrEdge), "addscredge");
88         
89         sortscrvert(&v1, &v2);
90         se->v1= v1;
91         se->v2= v2;
92         
93         BLI_addtail(&sc->edgebase, se);
94         return se;
95 }
96
97
98 ScrEdge *screen_findedge(bScreen *sc, ScrVert *v1, ScrVert *v2)
99 {
100         ScrEdge *se;
101         
102         sortscrvert(&v1, &v2);
103         for (se= sc->edgebase.first; se; se= se->next)
104                 if(se->v1==v1 && se->v2==v2)
105                         return se;
106         
107         return NULL;
108 }
109
110 void removedouble_scrverts(bScreen *sc)
111 {
112         ScrVert *v1, *verg;
113         ScrEdge *se;
114         ScrArea *sa;
115         
116         verg= sc->vertbase.first;
117         while(verg) {
118                 if(verg->newv==NULL) {  /* !!! */
119                         v1= verg->next;
120                         while(v1) {
121                                 if(v1->newv==NULL) {    /* !?! */
122                                         if(v1->vec.x==verg->vec.x && v1->vec.y==verg->vec.y) {
123                                                 /* printf("doublevert\n"); */
124                                                 v1->newv= verg;
125                                         }
126                                 }
127                                 v1= v1->next;
128                         }
129                 }
130                 verg= verg->next;
131         }
132
133         /* replace pointers in edges and faces */
134         se= sc->edgebase.first;
135         while(se) {
136                 if(se->v1->newv) se->v1= se->v1->newv;
137                 if(se->v2->newv) se->v2= se->v2->newv;
138                 /* edges changed: so.... */
139                 sortscrvert(&(se->v1), &(se->v2));
140                 se= se->next;
141         }
142         sa= sc->areabase.first;
143         while(sa) {
144                 if(sa->v1->newv) sa->v1= sa->v1->newv;
145                 if(sa->v2->newv) sa->v2= sa->v2->newv;
146                 if(sa->v3->newv) sa->v3= sa->v3->newv;
147                 if(sa->v4->newv) sa->v4= sa->v4->newv;
148                 sa= sa->next;
149         }
150
151         /* remove */
152         verg= sc->vertbase.first;
153         while(verg) {
154                 v1= verg->next;
155                 if(verg->newv) {
156                         BLI_remlink(&sc->vertbase, verg);
157                         MEM_freeN(verg);
158                 }
159                 verg= v1;
160         }
161
162 }
163
164 void removenotused_scrverts(bScreen *sc)
165 {
166         ScrVert *sv, *svn;
167         ScrEdge *se;
168         
169         /* we assume edges are ok */
170         
171         se= sc->edgebase.first;
172         while(se) {
173                 se->v1->flag= 1;
174                 se->v2->flag= 1;
175                 se= se->next;
176         }
177         
178         sv= sc->vertbase.first;
179         while(sv) {
180                 svn= sv->next;
181                 if(sv->flag==0) {
182                         BLI_remlink(&sc->vertbase, sv);
183                         MEM_freeN(sv);
184                 }
185                 else sv->flag= 0;
186                 sv= svn;
187         }
188 }
189
190 void removedouble_scredges(bScreen *sc)
191 {
192         ScrEdge *verg, *se, *sn;
193         
194         /* compare */
195         verg= sc->edgebase.first;
196         while(verg) {
197                 se= verg->next;
198                 while(se) {
199                         sn= se->next;
200                         if(verg->v1==se->v1 && verg->v2==se->v2) {
201                                 BLI_remlink(&sc->edgebase, se);
202                                 MEM_freeN(se);
203                         }
204                         se= sn;
205                 }
206                 verg= verg->next;
207         }
208 }
209
210 void removenotused_scredges(bScreen *sc)
211 {
212         ScrEdge *se, *sen;
213         ScrArea *sa;
214         int a=0;
215         
216         /* sets flags when edge is used in area */
217         sa= sc->areabase.first;
218         while(sa) {
219                 se= screen_findedge(sc, sa->v1, sa->v2);
220                 if(se==0) printf("error: area %d edge 1 doesn't exist\n", a);
221                 else se->flag= 1;
222                 se= screen_findedge(sc, sa->v2, sa->v3);
223                 if(se==0) printf("error: area %d edge 2 doesn't exist\n", a);
224                 else se->flag= 1;
225                 se= screen_findedge(sc, sa->v3, sa->v4);
226                 if(se==0) printf("error: area %d edge 3 doesn't exist\n", a);
227                 else se->flag= 1;
228                 se= screen_findedge(sc, sa->v4, sa->v1);
229                 if(se==0) printf("error: area %d edge 4 doesn't exist\n", a);
230                 else se->flag= 1;
231                 sa= sa->next;
232                 a++;
233         }
234         se= sc->edgebase.first;
235         while(se) {
236                 sen= se->next;
237                 if(se->flag==0) {
238                         BLI_remlink(&sc->edgebase, se);
239                         MEM_freeN(se);
240                 }
241                 else se->flag= 0;
242                 se= sen;
243         }
244 }
245
246 int scredge_is_horizontal(ScrEdge *se)
247 {
248         return (se->v1->vec.y == se->v2->vec.y);
249 }
250
251 ScrEdge *screen_find_active_scredge(bScreen *sc, int mx, int my)
252 {
253         ScrEdge *se;
254         
255         for (se= sc->edgebase.first; se; se= se->next) {
256                 if (scredge_is_horizontal(se)) {
257                         short min, max;
258                         min= MIN2(se->v1->vec.x, se->v2->vec.x);
259                         max= MAX2(se->v1->vec.x, se->v2->vec.x);
260                         
261                         if (abs(my-se->v1->vec.y)<=2 && mx>=min && mx<=max)
262                                 return se;
263                 } 
264                 else {
265                         short min, max;
266                         min= MIN2(se->v1->vec.y, se->v2->vec.y);
267                         max= MAX2(se->v1->vec.y, se->v2->vec.y);
268                         
269                         if (abs(mx-se->v1->vec.x)<=2 && my>=min && my<=max)
270                                 return se;
271                 }
272         }
273         
274         return NULL;
275 }
276
277
278
279 /* adds no space data */
280 static ScrArea *screen_addarea(bScreen *sc, ScrVert *v1, ScrVert *v2, ScrVert *v3, ScrVert *v4, short headertype, short spacetype)
281 {
282         ScrArea *sa= MEM_callocN(sizeof(ScrArea), "addscrarea");
283         sa->v1= v1;
284         sa->v2= v2;
285         sa->v3= v3;
286         sa->v4= v4;
287         sa->headertype= headertype;
288         sa->spacetype= sa->butspacetype= spacetype;
289         
290         BLI_addtail(&sc->areabase, sa);
291         
292         return sa;
293 }
294
295 static void screen_delarea(bContext *C, bScreen *sc, ScrArea *sa)
296 {
297         
298         ED_area_exit(C, sa);
299         
300         BKE_screen_area_free(sa);
301         
302         BLI_remlink(&sc->areabase, sa);
303         MEM_freeN(sa);
304 }
305
306 /* return 0: no split possible */
307 /* else return (integer) screencoordinate split point */
308 static short testsplitpoint(wmWindow *win, ScrArea *sa, char dir, float fac)
309 {
310         short x, y;
311         
312         // area big enough?
313         if(dir=='v' && (sa->v4->vec.x- sa->v1->vec.x <= 2*AREAMINX)) return 0;
314         if(dir=='h' && (sa->v2->vec.y- sa->v1->vec.y <= 2*AREAMINY)) return 0;
315         
316         // to be sure
317         if(fac<0.0) fac= 0.0;
318         if(fac>1.0) fac= 1.0;
319         
320         if(dir=='h') {
321                 y= sa->v1->vec.y+ fac*(sa->v2->vec.y- sa->v1->vec.y);
322                 
323                 if(y- sa->v1->vec.y < AREAMINY) 
324                         y= sa->v1->vec.y+ AREAMINY;
325                 else if(sa->v2->vec.y- y < AREAMINY) 
326                         y= sa->v2->vec.y- AREAMINY;
327                 else y-= (y % AREAGRID);
328                 
329                 return y;
330         }
331         else {
332                 x= sa->v1->vec.x+ fac*(sa->v4->vec.x- sa->v1->vec.x);
333                 
334                 if(x- sa->v1->vec.x < AREAMINX) 
335                         x= sa->v1->vec.x+ AREAMINX;
336                 else if(sa->v4->vec.x- x < AREAMINX) 
337                         x= sa->v4->vec.x- AREAMINX;
338                 else x-= (x % AREAGRID);
339                 
340                 return x;
341         }
342 }
343
344 ScrArea *area_split(wmWindow *win, bScreen *sc, ScrArea *sa, char dir, float fac)
345 {
346         ScrArea *newa=NULL;
347         ScrVert *sv1, *sv2;
348         short split;
349         
350         if(sa==NULL) return NULL;
351         
352         split= testsplitpoint(win, sa, dir, fac);
353         if(split==0) return NULL;
354         
355         if(dir=='h') {
356                 /* new vertices */
357                 sv1= screen_addvert(sc, sa->v1->vec.x, split);
358                 sv2= screen_addvert(sc, sa->v4->vec.x, split);
359                 
360                 /* new edges */
361                 screen_addedge(sc, sa->v1, sv1);
362                 screen_addedge(sc, sv1, sa->v2);
363                 screen_addedge(sc, sa->v3, sv2);
364                 screen_addedge(sc, sv2, sa->v4);
365                 screen_addedge(sc, sv1, sv2);
366                 
367                 /* new areas: top */
368                 newa= screen_addarea(sc, sv1, sa->v2, sa->v3, sv2, sa->headertype, sa->spacetype);
369                 area_copy_data(newa, sa, 0);
370                 
371                 /* area below */
372                 sa->v2= sv1;
373                 sa->v3= sv2;
374                 
375         }
376         else {
377                 /* new vertices */
378                 sv1= screen_addvert(sc, split, sa->v1->vec.y);
379                 sv2= screen_addvert(sc, split, sa->v2->vec.y);
380                 
381                 /* new edges */
382                 screen_addedge(sc, sa->v1, sv1);
383                 screen_addedge(sc, sv1, sa->v4);
384                 screen_addedge(sc, sa->v2, sv2);
385                 screen_addedge(sc, sv2, sa->v3);
386                 screen_addedge(sc, sv1, sv2);
387                 
388                 /* new areas: left */
389                 newa= screen_addarea(sc, sa->v1, sa->v2, sv2, sv1, sa->headertype, sa->spacetype);
390                 area_copy_data(newa, sa, 0);
391                 
392                 /* area right */
393                 sa->v1= sv1;
394                 sa->v2= sv2;
395         }
396         
397         /* remove double vertices en edges */
398         removedouble_scrverts(sc);
399         removedouble_scredges(sc);
400         removenotused_scredges(sc);
401         
402         return newa;
403 }
404
405 /* empty screen, with 1 dummy area without spacedata */
406 /* uses window size */
407 bScreen *screen_add(wmWindow *win, Scene *scene, char *name)
408 {
409         bScreen *sc;
410         ScrVert *sv1, *sv2, *sv3, *sv4;
411         
412         sc= alloc_libblock(&G.main->screen, ID_SCR, name);
413         sc->scene= scene;
414         sc->do_refresh= 1;
415         sc->winid= win->winid;
416         
417         sv1= screen_addvert(sc, 0, 0);
418         sv2= screen_addvert(sc, 0, win->sizey-1);
419         sv3= screen_addvert(sc, win->sizex-1, win->sizey-1);
420         sv4= screen_addvert(sc, win->sizex-1, 0);
421         
422         screen_addedge(sc, sv1, sv2);
423         screen_addedge(sc, sv2, sv3);
424         screen_addedge(sc, sv3, sv4);
425         screen_addedge(sc, sv4, sv1);
426         
427         /* dummy type, no spacedata */
428         screen_addarea(sc, sv1, sv2, sv3, sv4, HEADERDOWN, SPACE_EMPTY);
429                 
430         return sc;
431 }
432
433 static void screen_copy(bScreen *to, bScreen *from)
434 {
435         ScrVert *s1, *s2;
436         ScrEdge *se;
437         ScrArea *sa, *saf;
438         
439         /* free contents of 'to', is from blenkernel screen.c */
440         free_screen(to);
441         
442         BLI_duplicatelist(&to->vertbase, &from->vertbase);
443         BLI_duplicatelist(&to->edgebase, &from->edgebase);
444         BLI_duplicatelist(&to->areabase, &from->areabase);
445         to->regionbase.first= to->regionbase.last= NULL;
446         
447         s2= to->vertbase.first;
448         for(s1= from->vertbase.first; s1; s1= s1->next, s2= s2->next) {
449                 s1->newv= s2;
450         }
451         
452         for(se= to->edgebase.first; se; se= se->next) {
453                 se->v1= se->v1->newv;
454                 se->v2= se->v2->newv;
455                 sortscrvert(&(se->v1), &(se->v2));
456         }
457         
458         saf= from->areabase.first;
459         for(sa= to->areabase.first; sa; sa= sa->next, saf= saf->next) {
460                 sa->v1= sa->v1->newv;
461                 sa->v2= sa->v2->newv;
462                 sa->v3= sa->v3->newv;
463                 sa->v4= sa->v4->newv;
464                 
465                 sa->spacedata.first= sa->spacedata.last= NULL;
466                 sa->regionbase.first= sa->regionbase.last= NULL;
467                 sa->actionzones.first= sa->actionzones.last= NULL;
468                 sa->scriptlink.totscript= 0;
469                 
470                 area_copy_data(sa, saf, 0);
471         }
472         
473         /* put at zero (needed?) */
474         for(s1= from->vertbase.first; s1; s1= s1->next)
475                 s1->newv= NULL;
476
477 }
478
479
480 /* with sa as center, sb is located at: 0=W, 1=N, 2=E, 3=S */
481 /* -1 = not valid check */
482 /* used with join operator */
483 int area_getorientation(bScreen *screen, ScrArea *sa, ScrArea *sb)
484 {
485         ScrVert *sav1, *sav2, *sav3, *sav4;
486         ScrVert *sbv1, *sbv2, *sbv3, *sbv4;
487
488         if(sa==NULL || sb==NULL) return -1;
489
490         sav1= sa->v1;
491         sav2= sa->v2;
492         sav3= sa->v3;
493         sav4= sa->v4;
494         sbv1= sb->v1;
495         sbv2= sb->v2;
496         sbv3= sb->v3;
497         sbv4= sb->v4;
498         
499         if(sav1==sbv4 && sav2==sbv3) { /* sa to right of sb = W */
500                 return 0;
501         }
502         else if(sav2==sbv1 && sav3==sbv4) { /* sa to bottom of sb = N */
503                 return 1;
504         }
505         else if(sav3==sbv2 && sav4==sbv1) { /* sa to left of sb = E */
506                 return 2;
507         }
508         else if(sav1==sbv2 && sav4==sbv3) { /* sa on top of sb = S*/
509                 return 3;
510         }
511         
512         return -1;
513 }
514
515 /* Helper function to join 2 areas, it has a return value, 0=failed 1=success
516 *       used by the split, join operators
517 */
518 int screen_area_join(bContext *C, bScreen* scr, ScrArea *sa1, ScrArea *sa2) 
519 {
520         int dir;
521         
522         dir = area_getorientation(scr, sa1, sa2);
523         /*printf("dir is : %i \n", dir);*/
524         
525         if (dir < 0)
526         {
527                 if (sa1 ) sa1->flag &= ~AREA_FLAG_DRAWJOINFROM;
528                 if (sa2 ) sa2->flag &= ~AREA_FLAG_DRAWJOINTO;
529                 return 0;
530         }
531         
532         if(dir == 0) {
533                 sa1->v1= sa2->v1;
534                 sa1->v2= sa2->v2;
535                 screen_addedge(scr, sa1->v2, sa1->v3);
536                 screen_addedge(scr, sa1->v1, sa1->v4);
537         }
538         else if(dir == 1) {
539                 sa1->v2= sa2->v2;
540                 sa1->v3= sa2->v3;
541                 screen_addedge(scr, sa1->v1, sa1->v2);
542                 screen_addedge(scr, sa1->v3, sa1->v4);
543         }
544         else if(dir == 2) {
545                 sa1->v3= sa2->v3;
546                 sa1->v4= sa2->v4;
547                 screen_addedge(scr, sa1->v2, sa1->v3);
548                 screen_addedge(scr, sa1->v1, sa1->v4);
549         }
550         else if(dir == 3) {
551                 sa1->v1= sa2->v1;
552                 sa1->v4= sa2->v4;
553                 screen_addedge(scr, sa1->v1, sa1->v2);
554                 screen_addedge(scr, sa1->v3, sa1->v4);
555         }
556         
557         screen_delarea(C, scr, sa2);
558         removedouble_scrverts(scr);
559         sa1->flag &= ~AREA_FLAG_DRAWJOINFROM;
560         
561         return 1;
562 }
563
564 void select_connected_scredge(bScreen *sc, ScrEdge *edge)
565 {
566         ScrEdge *se;
567         ScrVert *sv;
568         int oneselected;
569         char dir;
570         
571         /* select connected, only in the right direction */
572         /* 'dir' is the direction of EDGE */
573         
574         if(edge->v1->vec.x==edge->v2->vec.x) dir= 'v';
575         else dir= 'h';
576         
577         sv= sc->vertbase.first;
578         while(sv) {
579                 sv->flag = 0;
580                 sv= sv->next;
581         }
582         
583         edge->v1->flag= 1;
584         edge->v2->flag= 1;
585         
586         oneselected= 1;
587         while(oneselected) {
588                 se= sc->edgebase.first;
589                 oneselected= 0;
590                 while(se) {
591                         if(se->v1->flag + se->v2->flag==1) {
592                                 if(dir=='h') if(se->v1->vec.y==se->v2->vec.y) {
593                                         se->v1->flag= se->v2->flag= 1;
594                                         oneselected= 1;
595                                 }
596                                         if(dir=='v') if(se->v1->vec.x==se->v2->vec.x) {
597                                                 se->v1->flag= se->v2->flag= 1;
598                                                 oneselected= 1;
599                                         }
600                         }
601                                 se= se->next;
602                 }
603         }
604 }
605
606 /* helper call for below, correct buttons view */
607 static void screen_test_scale_region(ListBase *regionbase, float facx, float facy)
608 {
609         ARegion *ar;
610         
611         for(ar= regionbase->first; ar; ar= ar->next) {
612                 if(ar->regiontype==RGN_TYPE_WINDOW) {
613                         ar->v2d.cur.xmin *= facx;
614                         ar->v2d.cur.xmax *= facx;
615                         ar->v2d.cur.ymin *= facy;
616                         ar->v2d.cur.ymax *= facy;
617                 }
618         }
619 }
620
621 /* test if screen vertices should be scaled */
622 static void screen_test_scale(bScreen *sc, int winsizex, int winsizey)
623 {
624         ScrVert *sv=NULL;
625         ScrArea *sa;
626         int sizex, sizey;
627         float facx, facy, tempf, min[2], max[2];
628         
629         /* calculate size */
630         min[0]= min[1]= 10000.0f;
631         max[0]= max[1]= 0.0f;
632         
633         for(sv= sc->vertbase.first; sv; sv= sv->next) {
634                 min[0]= MIN2(min[0], sv->vec.x);
635                 min[1]= MIN2(min[1], sv->vec.y);
636                 max[0]= MAX2(max[0], sv->vec.x);
637                 max[1]= MAX2(max[1], sv->vec.y);
638         }
639         
640         /* always make 0.0 left under */
641         for(sv= sc->vertbase.first; sv; sv= sv->next) {
642                 sv->vec.x -= min[0];
643                 sv->vec.y -= min[1];
644         }
645         
646         sizex= max[0]-min[0];
647         sizey= max[1]-min[1];
648         
649         if(sizex!= winsizex || sizey!= winsizey) {
650                 facx= winsizex;
651                 facx/= (float)sizex;
652                 facy= winsizey;
653                 facy/= (float)sizey;
654                 
655                 /* make sure it fits! */
656                 for(sv= sc->vertbase.first; sv; sv= sv->next) {
657                         tempf= ((float)sv->vec.x)*facx;
658                         sv->vec.x= (short)(tempf+0.5);
659                         sv->vec.x+= AREAGRID-1;
660                         sv->vec.x-=  (sv->vec.x % AREAGRID); 
661                         
662                         CLAMP(sv->vec.x, 0, winsizex);
663                         
664                         tempf= ((float)sv->vec.y )*facy;
665                         sv->vec.y= (short)(tempf+0.5);
666                         sv->vec.y+= AREAGRID-1;
667                         sv->vec.y-=  (sv->vec.y % AREAGRID); 
668                         
669                         CLAMP(sv->vec.y, 0, winsizey);
670                 }
671                 
672                 /* keep buttons view2d same size */
673                 for(sa= sc->areabase.first; sa; sa= sa->next) {
674                         SpaceLink *sl;
675                         
676                         if(sa->spacetype==SPACE_BUTS)
677                                 screen_test_scale_region(&sa->regionbase, facx, facy);
678                         
679                         for(sl= sa->spacedata.first; sl; sl= sl->next)
680                                 if(sl->spacetype==SPACE_BUTS)
681                                         screen_test_scale_region(&sl->regionbase, facx, facy);
682                 }
683                 
684         }
685         
686         /* test for collapsed areas. This could happen in some blender version... */
687         /* ton: removed option now, it needs Context... */
688         
689         /* make each window at least HEADERY high */
690         for(sa= sc->areabase.first; sa; sa= sa->next) {
691                 int headery= HEADERY+1;
692                 
693                 if(sa->v1->vec.y+headery > sa->v2->vec.y) {
694                         /* lower edge */
695                         ScrEdge *se= screen_findedge(sc, sa->v4, sa->v1);
696                         if(se && sa->v1!=sa->v2 ) {
697                                 int yval;
698                                 
699                                 select_connected_scredge(sc, se);
700                                 
701                                 /* all selected vertices get the right offset */
702                                 yval= sa->v2->vec.y-headery;
703                                 sv= sc->vertbase.first;
704                                 while(sv) {
705                                         /* if is a collapsed area */
706                                         if(sv!=sa->v2 && sv!=sa->v3) {
707                                                 if(sv->flag) sv->vec.y= yval;
708                                         }
709                                         sv= sv->next;
710                                 }
711                         }
712                 }
713         }
714         
715 }
716
717 /* *********************** DRAWING **************************************** */
718
719
720 #define SCR_BACK 0.55
721 #define SCR_ROUND 12
722
723 /* draw vertical shape visualising future joining (left as well
724  * right direction of future joining) */
725 static void draw_horizontal_join_shape(ScrArea *sa, char dir)
726 {
727         vec2f points[10];
728         short i;
729         float w, h;
730         float width = sa->v3->vec.x - sa->v1->vec.x;
731         float height = sa->v3->vec.y - sa->v1->vec.y;
732
733         if(height<width) {
734                 h = height/8;
735                 w = height/4;
736         }
737         else {
738                 h = width/8;
739                 w = width/4;
740         }
741
742         points[0].x = sa->v1->vec.x;
743         points[0].y = sa->v1->vec.y + height/2;
744
745         points[1].x = sa->v1->vec.x;
746         points[1].y = sa->v1->vec.y;
747
748         points[2].x = sa->v4->vec.x - w;
749         points[2].y = sa->v4->vec.y;
750
751         points[3].x = sa->v4->vec.x - w;
752         points[3].y = sa->v4->vec.y + height/2 - 2*h;
753
754         points[4].x = sa->v4->vec.x - 2*w;
755         points[4].y = sa->v4->vec.y + height/2;
756
757         points[5].x = sa->v4->vec.x - w;
758         points[5].y = sa->v4->vec.y + height/2 + 2*h;
759
760         points[6].x = sa->v3->vec.x - w;
761         points[6].y = sa->v3->vec.y;
762
763         points[7].x = sa->v2->vec.x;
764         points[7].y = sa->v2->vec.y;
765
766         points[8].x = sa->v4->vec.x;
767         points[8].y = sa->v4->vec.y + height/2 - h;
768
769         points[9].x = sa->v4->vec.x;
770         points[9].y = sa->v4->vec.y + height/2 + h;
771
772         if(dir=='l') {
773                 /* when direction is left, then we flip direction of arrow */
774                 float cx = sa->v1->vec.x + width;
775                 for(i=0;i<10;i++) {
776                         points[i].x -= cx;
777                         points[i].x = -points[i].x;
778                         points[i].x += sa->v1->vec.x;
779                 }
780         }
781
782         glBegin(GL_POLYGON);
783         for(i=0;i<5;i++)
784                 glVertex2f(points[i].x, points[i].y);
785         glEnd();
786         glBegin(GL_POLYGON);
787         for(i=4;i<8;i++)
788                 glVertex2f(points[i].x, points[i].y);
789         glVertex2f(points[0].x, points[0].y);
790         glEnd();
791
792         glRectf(points[2].x, points[2].y, points[8].x, points[8].y);
793         glRectf(points[6].x, points[6].y, points[9].x, points[9].y);
794 }
795
796 /* draw vertical shape visualising future joining (up/down direction) */
797 static void draw_vertical_join_shape(ScrArea *sa, char dir)
798 {
799         vec2f points[10];
800         short i;
801         float w, h;
802         float width = sa->v3->vec.x - sa->v1->vec.x;
803         float height = sa->v3->vec.y - sa->v1->vec.y;
804
805         if(height<width) {
806                 h = height/4;
807                 w = height/8;
808         }
809         else {
810                 h = width/4;
811                 w = width/8;
812         }
813
814         points[0].x = sa->v1->vec.x + width/2;
815         points[0].y = sa->v3->vec.y;
816
817         points[1].x = sa->v2->vec.x;
818         points[1].y = sa->v2->vec.y;
819
820         points[2].x = sa->v1->vec.x;
821         points[2].y = sa->v1->vec.y + h;
822
823         points[3].x = sa->v1->vec.x + width/2 - 2*w;
824         points[3].y = sa->v1->vec.y + h;
825
826         points[4].x = sa->v1->vec.x + width/2;
827         points[4].y = sa->v1->vec.y + 2*h;
828
829         points[5].x = sa->v1->vec.x + width/2 + 2*w;
830         points[5].y = sa->v1->vec.y + h;
831
832         points[6].x = sa->v4->vec.x;
833         points[6].y = sa->v4->vec.y + h;
834         
835         points[7].x = sa->v3->vec.x;
836         points[7].y = sa->v3->vec.y;
837
838         points[8].x = sa->v1->vec.x + width/2 - w;
839         points[8].y = sa->v1->vec.y;
840
841         points[9].x = sa->v1->vec.x + width/2 + w;
842         points[9].y = sa->v1->vec.y;
843
844         if(dir=='u') {
845                 /* when direction is up, then we flip direction of arrow */
846                 float cy = sa->v1->vec.y + height;
847                 for(i=0;i<10;i++) {
848                         points[i].y -= cy;
849                         points[i].y = -points[i].y;
850                         points[i].y += sa->v1->vec.y;
851                 }
852         }
853
854         glBegin(GL_POLYGON);
855         for(i=0;i<5;i++)
856                 glVertex2f(points[i].x, points[i].y);
857         glEnd();
858         glBegin(GL_POLYGON);
859         for(i=4;i<8;i++)
860                 glVertex2f(points[i].x, points[i].y);
861         glVertex2f(points[0].x, points[0].y);
862         glEnd();
863
864         glRectf(points[2].x, points[2].y, points[8].x, points[8].y);
865         glRectf(points[6].x, points[6].y, points[9].x, points[9].y);
866 }
867
868 /* draw join shape due to direction of joining */
869 static void draw_join_shape(ScrArea *sa, char dir)
870 {
871         if(dir=='u' || dir=='d')
872                 draw_vertical_join_shape(sa, dir);
873         else
874                 draw_horizontal_join_shape(sa, dir);
875 }
876
877 /* draw screen area darker with arrow (visualisation of future joining) */
878 static void scrarea_draw_shape_dark(ScrArea *sa, char dir)
879 {
880         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
881         glEnable(GL_BLEND);
882         glColor4ub(0, 0, 0, 50);
883         draw_join_shape(sa, dir);
884         glDisable(GL_BLEND);
885 }
886
887 /* draw screen area ligher with arrow shape ("eraser" of previous dark shape) */
888 static void scrarea_draw_shape_light(ScrArea *sa, char dir)
889 {
890         glBlendFunc(GL_DST_COLOR, GL_SRC_ALPHA);
891         glEnable(GL_BLEND);
892         /* value 181 was hardly computed: 181~105 */
893         glColor4ub(255, 255, 255, 50);          
894         /* draw_join_shape(sa, dir); */
895         glRecti(sa->v1->vec.x, sa->v1->vec.y, sa->v3->vec.x, sa->v3->vec.y);
896         glDisable(GL_BLEND);
897 }
898
899 static void drawscredge_area_draw(int sizex, int sizey, short x1, short y1, short x2, short y2, short a) 
900 {
901         /* right border area */
902         if(x2<sizex-1)
903                 sdrawline(x2+a, y1, x2+a, y2);
904         
905         /* left border area */
906         if(x1>0)  /* otherwise it draws the emboss of window over */
907                 sdrawline(x1+a, y1, x1+a, y2);
908         
909         /* top border area */
910         if(y2<sizey-1)
911                 sdrawline(x1, y2+a, x2, y2+a);
912         
913         /* bottom border area */
914         if(y1>0)
915                 sdrawline(x1, y1+a, x2, y1+a);
916         
917 }
918
919 /** screen edges drawing **/
920 static void drawscredge_area(ScrArea *sa, int sizex, int sizey, int center)
921 {
922         short x1= sa->v1->vec.x;
923         short y1= sa->v1->vec.y;
924         short x2= sa->v3->vec.x;
925         short y2= sa->v3->vec.y;
926         short a, rt;
927         
928         rt= CLAMPIS(G.rt, 0, 16);
929         
930         if(center==0) {
931                 cpack(0x505050);
932                 for(a=-rt; a<=rt; a++)
933                         if(a!=0)
934                                 drawscredge_area_draw(sizex, sizey, x1, y1, x2, y2, a);
935         }
936         else {
937                 cpack(0x0);
938                 drawscredge_area_draw(sizex, sizey, x1, y1, x2, y2, 0);
939         }
940 }
941
942 /* ****************** EXPORTED API TO OTHER MODULES *************************** */
943
944 bScreen *ED_screen_duplicate(wmWindow *win, bScreen *sc)
945 {
946         bScreen *newsc;
947         
948         if(sc->full != SCREENNORMAL) return NULL; /* XXX handle this case! */
949         
950         /* make new empty screen: */
951         newsc= screen_add(win, sc->scene, sc->id.name+2);
952         /* copy all data */
953         screen_copy(newsc, sc);
954         /* set in window */
955         win->screen= newsc;
956         
957         /* store identifier */
958         win->screen->winid= win->winid;
959         BLI_strncpy(win->screenname, win->screen->id.name+2, 21);
960
961         return newsc;
962 }
963
964 /* screen sets cursor based on swinid */
965 static void region_cursor_set(wmWindow *win, int swinid)
966 {
967         ScrArea *sa= win->screen->areabase.first;
968         
969         for(;sa; sa= sa->next) {
970                 ARegion *ar= sa->regionbase.first;
971                 for(;ar; ar= ar->next) {
972                         if(ar->swinid == swinid) {
973                                 if(ar->type && ar->type->cursor)
974                                         ar->type->cursor(win, sa, ar);
975                                 else
976                                         WM_cursor_set(win, CURSOR_STD);
977                                 return;
978                         }
979                 }
980         }
981 }
982
983 void ED_screen_do_listen(wmWindow *win, wmNotifier *note)
984 {
985         
986         /* generic notes */
987         switch(note->category) {
988                 case NC_WM:
989                         if(note->data==ND_FILEREAD)
990                                 win->screen->do_draw= 1;
991                         break;
992                 case NC_WINDOW:
993                         win->screen->do_draw= 1;
994                         break;
995                 case NC_SCREEN:
996                         if(note->action==NA_EDITED)
997                                 win->screen->do_draw= win->screen->do_refresh= 1;
998                 case NC_SCENE:
999                         if(note->data==ND_MODE)
1000                                 region_cursor_set(win, note->swinid);                           
1001                         break;
1002         }
1003 }
1004
1005 /* only for edge lines between areas, and the blended join arrows */
1006 void ED_screen_draw(wmWindow *win)
1007 {
1008         ScrArea *sa;
1009         ScrArea *sa1=NULL;
1010         ScrArea *sa2=NULL;
1011         int dir = -1;
1012         int dira = -1;
1013
1014         wmSubWindowSet(win, win->screen->mainwin);
1015         
1016         for(sa= win->screen->areabase.first; sa; sa= sa->next) {
1017                 if (sa->flag & AREA_FLAG_DRAWJOINFROM) sa1 = sa;
1018                 if (sa->flag & AREA_FLAG_DRAWJOINTO) sa2 = sa;
1019                 drawscredge_area(sa, win->sizex, win->sizey, 0);
1020         }
1021         for(sa= win->screen->areabase.first; sa; sa= sa->next)
1022                 drawscredge_area(sa, win->sizex, win->sizey, 1);
1023         
1024         /* blended join arrow */
1025         if (sa1 && sa2) {
1026                 dir = area_getorientation(win->screen, sa1, sa2);
1027                 if (dir >= 0) {
1028                         switch(dir) {
1029                                 case 0: /* W */
1030                                         dir = 'r';
1031                                         dira = 'l';
1032                                         break;
1033                                 case 1: /* N */
1034                                         dir = 'd';
1035                                         dira = 'u';
1036                                         break;
1037                                 case 2: /* E */
1038                                         dir = 'l';
1039                                         dira = 'r';
1040                                         break;
1041                                 case 3: /* S */
1042                                         dir = 'u';
1043                                         dira = 'd';
1044                                         break;
1045                         }
1046                 }
1047                 scrarea_draw_shape_dark(sa2, dir);
1048                 scrarea_draw_shape_light(sa1, dira);
1049         }
1050         
1051 //      if(G.f & G_DEBUG) printf("draw screen\n");
1052         win->screen->do_draw= 0;
1053 }
1054
1055 /* make this screen usable */
1056 /* for file read and first use, for scaling window, area moves */
1057 void ED_screen_refresh(wmWindowManager *wm, wmWindow *win)
1058 {
1059         ScrArea *sa;
1060         rcti winrct= {0, win->sizex-1, 0, win->sizey-1};
1061         
1062         screen_test_scale(win->screen, win->sizex, win->sizey);
1063         
1064         if(win->screen->mainwin==0)
1065                 win->screen->mainwin= wm_subwindow_open(win, &winrct);
1066         else
1067                 wm_subwindow_position(win, win->screen->mainwin, &winrct);
1068         
1069         for(sa= win->screen->areabase.first; sa; sa= sa->next) {
1070                 /* set spacetype and region callbacks, calls init() */
1071                 /* sets subwindows for regions, adds handlers */
1072                 ED_area_initialize(wm, win, sa);
1073         }
1074
1075         /* wake up animtimer */
1076         if(win->screen->animtimer)
1077                 WM_event_window_timer_sleep(win, win->screen->animtimer, 0);
1078         
1079         if(G.f & G_DEBUG) printf("set screen\n");
1080         win->screen->do_refresh= 0;
1081
1082         win->screen->context= ed_screen_context;
1083 }
1084
1085 /* file read, set all screens, ... */
1086 void ED_screens_initialize(wmWindowManager *wm)
1087 {
1088         wmWindow *win;
1089         
1090         for(win= wm->windows.first; win; win= win->next) {
1091                 
1092                 if(win->screen==NULL)
1093                         win->screen= G.main->screen.first;
1094                 
1095                 ED_screen_refresh(wm, win);
1096         }
1097 }
1098
1099
1100 /* *********** exit calls are for closing running stuff ******** */
1101
1102 void ED_region_exit(bContext *C, ARegion *ar)
1103 {
1104         ARegion *prevar= CTX_wm_region(C);
1105
1106         CTX_wm_region_set(C, ar);
1107         WM_event_remove_handlers(C, &ar->handlers);
1108         if(ar->swinid)
1109                 wm_subwindow_close(CTX_wm_window(C), ar->swinid);
1110         ar->swinid= 0;
1111         
1112         if(ar->headerstr)
1113                 MEM_freeN(ar->headerstr);
1114         ar->headerstr= NULL;
1115         
1116         CTX_wm_region_set(C, prevar);
1117 }
1118
1119 void ED_area_exit(bContext *C, ScrArea *sa)
1120 {
1121         ScrArea *prevsa= CTX_wm_area(C);
1122         ARegion *ar;
1123
1124         CTX_wm_area_set(C, sa);
1125         for(ar= sa->regionbase.first; ar; ar= ar->next)
1126                 ED_region_exit(C, ar);
1127
1128         WM_event_remove_handlers(C, &sa->handlers);
1129         CTX_wm_area_set(C, prevsa);
1130 }
1131
1132 void ED_screen_exit(bContext *C, wmWindow *window, bScreen *screen)
1133 {
1134         wmWindow *prevwin= CTX_wm_window(C);
1135         ScrArea *sa;
1136         ARegion *ar;
1137
1138         CTX_wm_window_set(C, window);
1139         
1140         if(screen->animtimer)
1141                 WM_event_remove_window_timer(window, screen->animtimer);
1142         screen->animtimer= NULL;
1143         
1144         if(screen->mainwin)
1145                 wm_subwindow_close(window, screen->mainwin);
1146         screen->mainwin= 0;
1147         screen->subwinactive= 0;
1148         
1149         for(ar= screen->regionbase.first; ar; ar= ar->next)
1150                 ED_region_exit(C, ar);
1151
1152         for(sa= screen->areabase.first; sa; sa= sa->next)
1153                 ED_area_exit(C, sa);
1154
1155         /* mark it available for use for other windows */
1156         screen->winid= 0;
1157         
1158         CTX_wm_window_set(C, prevwin);
1159 }
1160
1161 /* *********************************** */
1162
1163 /* case when on area-edge or in azones, or outside window */
1164 static void screen_cursor_set(wmWindow *win, wmEvent *event)
1165 {
1166         AZone *az= NULL;
1167         ScrArea *sa;
1168         
1169         for(sa= win->screen->areabase.first; sa; sa= sa->next)
1170                 if((az=is_in_area_actionzone(sa, event->x, event->y)))
1171                         break;
1172         
1173         if(sa) {
1174                 if(az->type==AZONE_AREA)
1175                         WM_cursor_set(win, CURSOR_EDIT);
1176                 else if(az->type==AZONE_REGION) {
1177                         if(az->x1==az->x2)
1178                                 WM_cursor_set(win, CURSOR_X_MOVE);
1179                         else
1180                                 WM_cursor_set(win, CURSOR_Y_MOVE);
1181                 }
1182         }
1183         else {
1184                 ScrEdge *actedge= screen_find_active_scredge(win->screen, event->x, event->y);
1185                 
1186                 if (actedge) {
1187                         if(scredge_is_horizontal(actedge))
1188                                 WM_cursor_set(win, CURSOR_Y_MOVE);
1189                         else
1190                                 WM_cursor_set(win, CURSOR_X_MOVE);
1191                 }
1192                 else
1193                         WM_cursor_set(win, CURSOR_STD);
1194         } 
1195 }
1196
1197
1198 /* called in wm_event_system.c. sets state vars in screen, cursors */
1199 /* event type is mouse move */
1200 void ED_screen_set_subwinactive(wmWindow *win, wmEvent *event)
1201 {
1202         if(win->screen) {
1203                 bScreen *scr= win->screen;
1204                 ScrArea *sa;
1205                 ARegion *ar;
1206                 int oldswin= scr->subwinactive;
1207
1208                 for(sa= scr->areabase.first; sa; sa= sa->next) {
1209                         if(event->x > sa->totrct.xmin && event->x < sa->totrct.xmax)
1210                                 if(event->y > sa->totrct.ymin && event->y < sa->totrct.ymax)
1211                                         if(NULL==is_in_area_actionzone(sa, event->x, event->y))
1212                                                 break;
1213                 }
1214                 if(sa) {
1215                         for(ar= sa->regionbase.first; ar; ar= ar->next) {
1216                                 if(BLI_in_rcti(&ar->winrct, event->x, event->y))
1217                                         scr->subwinactive= ar->swinid;
1218                         }
1219                 }
1220                 else
1221                         scr->subwinactive= scr->mainwin;
1222                 
1223                 /* check for redraw headers */
1224                 if(oldswin!=scr->subwinactive) {
1225
1226                         for(sa= scr->areabase.first; sa; sa= sa->next) {
1227                                 int do_draw= 0;
1228                                 
1229                                 for(ar= sa->regionbase.first; ar; ar= ar->next)
1230                                         if(ar->swinid==oldswin || ar->swinid==scr->subwinactive)
1231                                                 do_draw= 1;
1232                                 
1233                                 if(do_draw) {
1234                                         for(ar= sa->regionbase.first; ar; ar= ar->next)
1235                                                 if(ar->regiontype==RGN_TYPE_HEADER)
1236                                                         ED_region_tag_redraw(ar);
1237                                 }
1238                         }
1239                 }
1240                 
1241                 /* cursors, for time being set always on edges, otherwise aregion doesnt switch */
1242                 if(scr->subwinactive==scr->mainwin) {
1243                         screen_cursor_set(win, event);
1244                 }
1245                 else if(oldswin!=scr->subwinactive) {
1246                         region_cursor_set(win, scr->subwinactive);
1247                 }
1248         }
1249 }
1250
1251 int ED_screen_area_active(const bContext *C)
1252 {
1253         bScreen *sc= CTX_wm_screen(C);
1254         ScrArea *sa= CTX_wm_area(C);
1255
1256         if(sc && sa) {
1257                 ARegion *ar;
1258                 for(ar= sa->regionbase.first; ar; ar= ar->next)
1259                         if(ar->swinid == sc->subwinactive)
1260                                 return 1;
1261         }       
1262         return 0;
1263 }
1264
1265 /* operator call, WM + Window + screen already existed before */
1266 /* Do NOT call in area/region queues! */
1267 void ED_screen_set(bContext *C, bScreen *sc)
1268 {
1269         wmWindow *win= CTX_wm_window(C);
1270         bScreen *oldscreen= CTX_wm_screen(C);
1271         ID *id;
1272         
1273         /* validate screen, it's called with notifier reference */
1274         for(id= CTX_data_main(C)->screen.first; id; id= id->next)
1275                 if(sc == (bScreen *)id)
1276                         break;
1277         if(id==NULL) 
1278                 return;
1279         
1280         /* check for valid winid */
1281         if(sc->winid!=0 && sc->winid!=win->winid)
1282                 return;
1283         
1284         if(sc->full) {                          /* find associated full */
1285                 bScreen *sc1;
1286                 for(sc1= CTX_data_main(C)->screen.first; sc1; sc1= sc1->id.next) {
1287                         ScrArea *sa= sc1->areabase.first;
1288                         if(sa->full==sc) {
1289                                 sc= sc1;
1290                                 break;
1291                         }
1292                 }
1293         }
1294         
1295         if (oldscreen != sc) {
1296                 wmTimer *wt= oldscreen->animtimer;
1297                 
1298                 /* we put timer to sleep, so screen_exit has to think there's no timer */
1299                 oldscreen->animtimer= NULL;
1300                 if(wt)
1301                         WM_event_window_timer_sleep(win, wt, 1);
1302                 
1303                 ED_screen_exit(C, win, oldscreen);
1304                 oldscreen->animtimer= wt;
1305                 
1306                 win->screen= sc;
1307                 CTX_wm_window_set(C, win);      // stores C->wm.screen... hrmf
1308                 
1309                 /* prevent multiwin errors */
1310                 sc->winid= win->winid;
1311                 
1312                 ED_screen_refresh(CTX_wm_manager(C), CTX_wm_window(C));
1313                 WM_event_add_notifier(C, NC_WINDOW, NULL);
1314                 
1315                 /* makes button hilites work */
1316                 WM_event_add_mousemove(C);
1317         }
1318 }
1319
1320 /* only call outside of area/region loops */
1321 void ED_screen_set_scene(bContext *C, Scene *scene)
1322 {
1323         bScreen *sc;
1324         bScreen *curscreen= CTX_wm_screen(C);
1325         
1326         for(sc= CTX_data_main(C)->screen.first; sc; sc= sc->id.next) {
1327                 if((U.flag & USER_SCENEGLOBAL) || sc==curscreen) {
1328                         
1329                         if(scene != sc->scene) {
1330                                 /* all areas endlocalview */
1331                         // XXX  ScrArea *sa= sc->areabase.first;
1332                         //      while(sa) {
1333                         //              endlocalview(sa);
1334                         //              sa= sa->next;
1335                         //      }               
1336                                 sc->scene= scene;
1337                         }
1338                         
1339                 }
1340         }
1341         
1342         //  copy_view3d_lock(0);        /* space.c */
1343         
1344         /* are there cameras in the views that are not in the scene? */
1345         for(sc= CTX_data_main(C)->screen.first; sc; sc= sc->id.next) {
1346                 if( (U.flag & USER_SCENEGLOBAL) || sc==curscreen) {
1347                         ScrArea *sa= sc->areabase.first;
1348                         while(sa) {
1349                                 SpaceLink *sl= sa->spacedata.first;
1350                                 while(sl) {
1351                                         if(sl->spacetype==SPACE_VIEW3D) {
1352                                                 View3D *v3d= (View3D*) sl;
1353                                                 if (!v3d->camera || !object_in_scene(v3d->camera, scene)) {
1354                                                         v3d->camera= scene_find_camera(sc->scene);
1355                                                         // XXX if (sc==curscreen) handle_view3d_lock();
1356                                                         if (!v3d->camera && v3d->persp==V3D_CAMOB) 
1357                                                                 v3d->persp= V3D_PERSP;
1358                                                 }
1359                                         }
1360                                         sl= sl->next;
1361                                 }
1362                                 sa= sa->next;
1363                         }
1364                 }
1365         }
1366         
1367         CTX_data_scene_set(C, scene);
1368         set_scene_bg(scene);
1369         
1370         ED_update_for_newframe(C, 1);
1371         
1372 //      set_radglobal();
1373         
1374         /* complete redraw */
1375         WM_event_add_notifier(C, NC_WINDOW, NULL);
1376         
1377 }
1378
1379 /* this function toggles: if area is full then the parent will be restored */
1380 void ed_screen_fullarea(bContext *C, ScrArea *sa)
1381 {
1382         bScreen *sc, *oldscreen;
1383         
1384         if(sa==NULL) {
1385                 return;
1386         }
1387         else if(sa->full) {
1388                 short fulltype;
1389                 
1390                 sc= sa->full;           /* the old screen to restore */
1391                 oldscreen= CTX_wm_screen(C);    /* the one disappearing */
1392                 
1393                 fulltype = sc->full;
1394                 
1395                 /* refuse to go out of SCREENAUTOPLAY as long as G_FLAGS_AUTOPLAY
1396                    is set */
1397                 
1398                 if (fulltype != SCREENAUTOPLAY || (G.flags & G_FILE_AUTOPLAY) == 0) {
1399                         ScrArea *old;
1400                         
1401                         sc->full= 0;
1402                         
1403                         /* find old area */
1404                         for(old= sc->areabase.first; old; old= old->next) 
1405                                 if(old->full) break;
1406                         if(old==NULL) {
1407                                 printf("something wrong in areafullscreen\n"); 
1408                                 return;
1409                         }
1410                             // old feature described below (ton)
1411                                 // in autoplay screens the headers are disabled by 
1412                                 // default. So use the old headertype instead
1413                         
1414                         area_copy_data(old, sa, 1);     /*  1 = swap spacelist */
1415                         
1416                         old->full= NULL;
1417                         
1418                         /* animtimer back */
1419                         sc->animtimer= oldscreen->animtimer;
1420                         oldscreen->animtimer= NULL;
1421                         
1422                         ED_screen_set(C, sc);
1423                         
1424                         free_screen(oldscreen);
1425                         free_libblock(&CTX_data_main(C)->screen, oldscreen);
1426                 }
1427         }
1428         else {
1429                 ScrArea *newa;
1430                 
1431                 oldscreen= CTX_wm_screen(C);
1432
1433                 /* is there only 1 area? */
1434                 if(oldscreen->areabase.first==oldscreen->areabase.last) return;
1435                 
1436                 oldscreen->full = SCREENFULL;
1437                 
1438                 sc= screen_add(CTX_wm_window(C), CTX_data_scene(C), "temp");
1439                 sc->full = SCREENFULL; // XXX
1440                 
1441                 /* timer */
1442                 sc->animtimer= oldscreen->animtimer;
1443                 oldscreen->animtimer= NULL;
1444                 
1445                 /* returns the top small area */
1446                 newa= area_split(CTX_wm_window(C), sc, (ScrArea *)sc->areabase.first, 'h', 0.99f);
1447                 ED_area_newspace(C, newa, SPACE_INFO);
1448
1449                 /* copy area */
1450                 newa= newa->prev;
1451                 area_copy_data(newa, sa, 1);    /* 1 = swap spacelist */
1452
1453                 sa->full= oldscreen;
1454                 newa->full= oldscreen;
1455                 newa->next->full= oldscreen; // XXX
1456
1457                 ED_screen_set(C, sc);
1458         }
1459
1460         /* XXX bad code: setscreen() ends with first area active. fullscreen render assumes this too */
1461         CTX_wm_area_set(C, sc->areabase.first);
1462
1463         /* XXX retopo_force_update(); */
1464
1465 }
1466
1467 int ED_screen_full_newspace(bContext *C, ScrArea *sa, int type)
1468 {
1469         if(sa==NULL)
1470                 return 0;
1471         
1472         if(sa->full==0)
1473                 ed_screen_fullarea(C, sa);
1474
1475         /* CTX_wm_area(C) is new area */
1476         ED_area_newspace(C, CTX_wm_area(C), type);
1477         
1478         return 1;
1479 }
1480
1481 void ED_screen_full_prevspace(bContext *C)
1482 {
1483         ScrArea *sa= CTX_wm_area(C);
1484         
1485         ED_area_prevspace(C);
1486         
1487         if(sa->full)
1488                 ed_screen_fullarea(C, sa);
1489 }
1490
1491 /* redraws: uses defines from stime->redraws 
1492  * enable: 1 - forward on, -1 - backwards on, 0 - off
1493  */
1494 void ED_screen_animation_timer(bContext *C, int redraws, int enable)
1495 {
1496         bScreen *screen= CTX_wm_screen(C);
1497         wmWindow *win= CTX_wm_window(C);
1498         Scene *scene= CTX_data_scene(C);
1499         
1500         if(screen->animtimer)
1501                 WM_event_remove_window_timer(win, screen->animtimer);
1502         screen->animtimer= NULL;
1503         
1504         if(enable) {
1505                 struct ScreenAnimData *sad= MEM_mallocN(sizeof(ScreenAnimData), "ScreenAnimData");
1506                 
1507                 screen->animtimer= WM_event_add_window_timer(win, TIMER0, (1.0/FPS));
1508                 sad->ar= CTX_wm_region(C);
1509                 sad->redraws= redraws;
1510                 sad->reverse= (enable < 0);
1511                 screen->animtimer->customdata= sad;
1512                 
1513         }
1514         /* notifier catched by top header, for button */
1515         WM_event_add_notifier(C, NC_SCREEN|ND_ANIMPLAY, screen);
1516 }
1517
1518 unsigned int ED_screen_view3d_layers(bScreen *screen)
1519 {
1520         if(screen) {
1521                 unsigned int layer= screen->scene->lay; /* as minimum this */
1522                 ScrArea *sa;
1523                 
1524                 /* get all used view3d layers */
1525                 for(sa= screen->areabase.first; sa; sa= sa->next) {
1526                         if(sa->spacetype==SPACE_VIEW3D)
1527                                 layer |= ((View3D *)sa->spacedata.first)->lay;
1528                 }
1529                 return layer;
1530         }
1531         return 0;
1532 }
1533
1534
1535 /* results in fully updated anim system */
1536 /* in future sound should be on WM level, only 1 sound can play! */
1537 void ED_update_for_newframe(const bContext *C, int mute)
1538 {
1539         bScreen *screen= CTX_wm_screen(C);
1540         Scene *scene= screen->scene;
1541         
1542         //extern void audiostream_scrub(unsigned int frame);    /* seqaudio.c */
1543         
1544         /* this function applies the changes too */
1545         /* XXX future: do all windows */
1546         scene_update_for_newframe(scene, ED_screen_view3d_layers(screen)); /* BKE_scene.h */
1547         
1548         //if ( (CFRA>1) && (!mute) && (scene->audio.flag & AUDIO_SCRUB)) 
1549         //      audiostream_scrub( CFRA );
1550         
1551         /* 3d window, preview */
1552         //BIF_view3d_previewrender_signal(curarea, PR_DBASE|PR_DISPRECT);
1553         
1554         /* all movie/sequence images */
1555         //BIF_image_update_frame();
1556         
1557         /* composite */
1558         if(scene->use_nodes && scene->nodetree)
1559                 ntreeCompositTagAnimated(scene->nodetree);
1560         
1561         /* update animated texture nodes */
1562         {
1563                 Tex *tex;
1564                 for(tex= CTX_data_main(C)->tex.first; tex; tex= tex->id.next)
1565                         if( tex->use_nodes && tex->nodetree ) {
1566                                 ntreeTexTagAnimated( tex->nodetree );
1567                         }
1568         }
1569 }
1570
1571