Holiday coding log :)
[blender.git] / source / blender / editors / screen / area.c
1 /*
2  * ***** BEGIN GPL LICENSE BLOCK *****
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version. 
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  *
18  * The Original Code is Copyright (C) 2008 Blender Foundation.
19  * All rights reserved.
20  *
21  * 
22  * Contributor(s): Blender Foundation
23  *
24  * ***** END GPL LICENSE BLOCK *****
25  */
26
27 /** \file blender/editors/screen/area.c
28  *  \ingroup edscr
29  */
30
31
32 #include <string.h>
33 #include <stdio.h>
34
35 #include "MEM_guardedalloc.h"
36
37 #include "DNA_userdef_types.h"
38
39 #include "BLI_blenlib.h"
40 #include "BLI_math.h"
41 #include "BLI_rand.h"
42 #include "BLI_utildefines.h"
43
44 #include "BLF_translation.h"
45
46 #include "BKE_context.h"
47 #include "BKE_global.h"
48 #include "BKE_screen.h"
49
50 #include "WM_api.h"
51 #include "WM_types.h"
52 #include "wm_subwindow.h"
53
54 #include "ED_screen.h"
55 #include "ED_screen_types.h"
56 #include "ED_space_api.h"
57 #include "ED_types.h"
58 #include "ED_fileselect.h" 
59
60 #include "BIF_gl.h"
61 #include "BIF_glutil.h"
62 #include "BLF_api.h"
63
64 #include "UI_interface.h"
65 #include "UI_resources.h"
66 #include "UI_view2d.h"
67
68 #include "screen_intern.h"
69
70 /* general area and region code */
71
72 static void region_draw_emboss(ARegion *ar, rcti *scirct)
73 {
74         rcti rect;
75         
76         /* translate scissor rect to region space */
77         rect.xmin = scirct->xmin - ar->winrct.xmin;
78         rect.ymin = scirct->ymin - ar->winrct.ymin;
79         rect.xmax = scirct->xmax - ar->winrct.xmin;
80         rect.ymax = scirct->ymax - ar->winrct.ymin;
81         
82         /* set transp line */
83         glEnable(GL_BLEND);
84         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
85         
86         /* right  */
87         glColor4ub(0, 0, 0, 30);
88         sdrawline(rect.xmax, rect.ymin, rect.xmax, rect.ymax);
89         
90         /* bottom  */
91         glColor4ub(0, 0, 0, 30);
92         sdrawline(rect.xmin, rect.ymin, rect.xmax, rect.ymin);
93         
94         /* top  */
95         glColor4ub(255, 255, 255, 30);
96         sdrawline(rect.xmin, rect.ymax, rect.xmax, rect.ymax);
97
98         /* left  */
99         glColor4ub(255, 255, 255, 30);
100         sdrawline(rect.xmin, rect.ymin, rect.xmin, rect.ymax);
101         
102         glDisable(GL_BLEND);
103 }
104
105 void ED_region_pixelspace(ARegion *ar)
106 {
107         int width  = BLI_rcti_size_x(&ar->winrct) + 1;
108         int height = BLI_rcti_size_y(&ar->winrct) + 1;
109         
110         wmOrtho2(-GLA_PIXEL_OFS, (float)width - GLA_PIXEL_OFS, -GLA_PIXEL_OFS, (float)height - GLA_PIXEL_OFS);
111         glLoadIdentity();
112 }
113
114 /* only exported for WM */
115 void ED_region_do_listen(ARegion *ar, wmNotifier *note)
116 {
117         /* generic notes first */
118         switch (note->category) {
119                 case NC_WM:
120                         if (note->data == ND_FILEREAD)
121                                 ED_region_tag_redraw(ar);
122                         break;
123                 case NC_WINDOW:
124                         ED_region_tag_redraw(ar);
125                         break;
126         }
127
128         if (ar->type && ar->type->listener)
129                 ar->type->listener(ar, note);
130 }
131
132 /* only exported for WM */
133 void ED_area_do_listen(ScrArea *sa, wmNotifier *note)
134 {
135         /* no generic notes? */
136         if (sa->type && sa->type->listener) {
137                 sa->type->listener(sa, note);
138         }
139 }
140
141 /* only exported for WM */
142 void ED_area_do_refresh(bContext *C, ScrArea *sa)
143 {
144         /* no generic notes? */
145         if (sa->type && sa->type->refresh) {
146                 sa->type->refresh(C, sa);
147         }
148         sa->do_refresh = FALSE;
149 }
150
151 /* based on screen region draw tags, set draw tags in azones, and future region tabs etc */
152 /* only exported for WM */
153 void ED_area_overdraw_flush(ScrArea *sa, ARegion *ar)
154 {
155         AZone *az;
156         
157         for (az = sa->actionzones.first; az; az = az->next) {
158                 int xs, ys;
159                 
160                 xs = (az->x1 + az->x2) / 2;
161                 ys = (az->y1 + az->y2) / 2;
162
163                 /* test if inside */
164                 if (BLI_rcti_isect_pt(&ar->winrct, xs, ys)) {
165                         az->do_draw = TRUE;
166                 }
167         }
168 }
169
170 /**
171  * \brief Corner widgets use for dragging and splitting the view.
172  */
173 static void area_draw_azone(short x1, short y1, short x2, short y2)
174 {
175         int dx = x2 - x1;
176         int dy = y2 - y1;
177
178         dx = copysign(ceilf(0.3f * fabsf(dx)), dx);
179         dy = copysign(ceilf(0.3f * fabsf(dy)), dy);
180
181         glEnable(GL_BLEND);
182         glEnable(GL_LINE_SMOOTH);
183         
184         glColor4ub(255, 255, 255, 180);
185         fdrawline(x1, y2, x2, y1);
186         glColor4ub(255, 255, 255, 130);
187         fdrawline(x1, y2 - dy, x2 - dx, y1);
188         glColor4ub(255, 255, 255, 80);
189         fdrawline(x1, y2 - 2 * dy, x2 - 2 * dx, y1);
190         
191         glColor4ub(0, 0, 0, 210);
192         fdrawline(x1, y2 + 1, x2 + 1, y1);
193         glColor4ub(0, 0, 0, 180);
194         fdrawline(x1, y2 - dy + 1, x2 - dx + 1, y1);
195         glColor4ub(0, 0, 0, 150);
196         fdrawline(x1, y2 - 2 * dy + 1, x2 - 2 * dx + 1, y1);
197
198         glDisable(GL_LINE_SMOOTH);
199         glDisable(GL_BLEND);
200 }
201
202 static void region_draw_azone_icon(AZone *az)
203 {
204         GLUquadricObj *qobj = NULL; 
205         short midx = az->x1 + (az->x2 - az->x1) / 2;
206         short midy = az->y1 + (az->y2 - az->y1) / 2;
207                 
208         qobj = gluNewQuadric();
209         
210         glPushMatrix();
211         glTranslatef(midx, midy, 0.0);
212         
213         /* outlined circle */
214         glEnable(GL_LINE_SMOOTH);
215
216         glColor4f(1.f, 1.f, 1.f, 0.8f);
217
218         gluQuadricDrawStyle(qobj, GLU_FILL); 
219         gluDisk(qobj, 0.0,  4.25f, 16, 1);
220
221         glColor4f(0.2f, 0.2f, 0.2f, 0.9f);
222         
223         gluQuadricDrawStyle(qobj, GLU_SILHOUETTE); 
224         gluDisk(qobj, 0.0,  4.25f, 16, 1);
225         
226         glDisable(GL_LINE_SMOOTH);
227         
228         glPopMatrix();
229         gluDeleteQuadric(qobj);
230         
231         /* + */
232         sdrawline(midx, midy - 2, midx, midy + 3);
233         sdrawline(midx - 2, midy, midx + 3, midy);
234 }
235
236 static void draw_azone_plus(float x1, float y1, float x2, float y2)
237 {
238         float width = 0.05f * U.widget_unit;
239         float pad = 0.2f * U.widget_unit;
240         
241         glRectf((x1 + x2 - width) * 0.5f, y1 + pad, (x1 + x2 + width) * 0.5f, y2 - pad);
242         glRectf(x1 + pad, (y1 + y2 - width) * 0.5f, (x1 + x2 - width) * 0.5f, (y1 + y2 + width) * 0.5f);
243         glRectf((x1 + x2 + width) * 0.5f, (y1 + y2 - width) * 0.5f, x2 - pad, (y1 + y2 + width) * 0.5f);
244 }
245
246 static void region_draw_azone_tab_plus(AZone *az)
247 {
248         extern void ui_draw_anti_tria(float x1, float y1, float x2, float y2, float x3, float y3); /* xxx temp */
249         
250         glEnable(GL_BLEND);
251         
252         /* add code to draw region hidden as 'too small' */
253         switch (az->edge) {
254                 case AE_TOP_TO_BOTTOMRIGHT:
255                         uiSetRoundBox(UI_CNR_TOP_LEFT | UI_CNR_TOP_RIGHT);
256                         break;
257                 case AE_BOTTOM_TO_TOPLEFT:
258                         uiSetRoundBox(UI_CNR_BOTTOM_RIGHT | UI_CNR_BOTTOM_LEFT);
259                         break;
260                 case AE_LEFT_TO_TOPRIGHT:
261                         uiSetRoundBox(UI_CNR_TOP_LEFT | UI_CNR_BOTTOM_LEFT);
262                         break;
263                 case AE_RIGHT_TO_TOPLEFT:
264                         uiSetRoundBox(UI_CNR_TOP_RIGHT | UI_CNR_BOTTOM_RIGHT);
265                         break;
266         }
267
268         glColor4f(0.05f, 0.05f, 0.05f, 0.4f);
269         uiRoundBox((float)az->x1, (float)az->y1, (float)az->x2, (float)az->y2, 4.0f);
270
271         glEnable(GL_BLEND);
272
273         glColor4f(0.8f, 0.8f, 0.8f, 0.4f);
274         draw_azone_plus((float)az->x1, (float)az->y1, (float)az->x2, (float)az->y2);
275
276         glDisable(GL_BLEND);
277 }
278
279 static void region_draw_azone_tab(AZone *az)
280 {
281         float col[3];
282         
283         glEnable(GL_BLEND);
284         UI_GetThemeColor3fv(TH_HEADER, col);
285         glColor4f(col[0], col[1], col[2], 0.5f);
286         
287         /* add code to draw region hidden as 'too small' */
288         switch (az->edge) {
289                 case AE_TOP_TO_BOTTOMRIGHT:
290                         uiSetRoundBox(UI_CNR_TOP_LEFT | UI_CNR_TOP_RIGHT | UI_RB_ALPHA);
291                         
292                         uiDrawBoxShade(GL_POLYGON, (float)az->x1, (float)az->y1, (float)az->x2, (float)az->y2, 4.0f, -0.3f, 0.05f);
293                         glColor4ub(0, 0, 0, 255);
294                         uiRoundRect((float)az->x1, 0.3f + (float)az->y1, (float)az->x2, 0.3f + (float)az->y2, 4.0f);
295                         break;
296                 case AE_BOTTOM_TO_TOPLEFT:
297                         uiSetRoundBox(UI_CNR_BOTTOM_RIGHT | UI_CNR_BOTTOM_LEFT | UI_RB_ALPHA);
298                         
299                         uiDrawBoxShade(GL_POLYGON, (float)az->x1, (float)az->y1, (float)az->x2, (float)az->y2, 4.0f, -0.3f, 0.05f);
300                         glColor4ub(0, 0, 0, 255);
301                         uiRoundRect((float)az->x1, 0.3f + (float)az->y1, (float)az->x2, 0.3f + (float)az->y2, 4.0f);
302                         break;
303                 case AE_LEFT_TO_TOPRIGHT:
304                         uiSetRoundBox(UI_CNR_TOP_LEFT | UI_CNR_BOTTOM_LEFT | UI_RB_ALPHA);
305                         
306                         uiDrawBoxShade(GL_POLYGON, (float)az->x1, (float)az->y1, (float)az->x2, (float)az->y2, 4.0f, -0.3f, 0.05f);
307                         glColor4ub(0, 0, 0, 255);
308                         uiRoundRect((float)az->x1, (float)az->y1, (float)az->x2, (float)az->y2, 4.0f);
309                         break;
310                 case AE_RIGHT_TO_TOPLEFT:
311                         uiSetRoundBox(UI_CNR_TOP_RIGHT | UI_CNR_BOTTOM_RIGHT | UI_RB_ALPHA);
312                         
313                         uiDrawBoxShade(GL_POLYGON, (float)az->x1, (float)az->y1, (float)az->x2, (float)az->y2, 4.0f, -0.3f, 0.05f);
314                         glColor4ub(0, 0, 0, 255);
315                         uiRoundRect((float)az->x1, (float)az->y1, (float)az->x2, (float)az->y2, 4.0f);
316                         break;
317         }
318         
319         glDisable(GL_BLEND);
320 }
321
322 static void region_draw_azone_tria(AZone *az)
323 {
324         extern void ui_draw_anti_tria(float x1, float y1, float x2, float y2, float x3, float y3); /* xxx temp */
325         
326         glEnable(GL_BLEND);
327         //UI_GetThemeColor3fv(TH_HEADER, col);
328         glColor4f(0.0f, 0.0f, 0.0f, 0.35f);
329         
330         /* add code to draw region hidden as 'too small' */
331         switch (az->edge) {
332                 case AE_TOP_TO_BOTTOMRIGHT:
333                         ui_draw_anti_tria((float)az->x1, (float)az->y1, (float)az->x2, (float)az->y1, (float)(az->x1 + az->x2) / 2, (float)az->y2);
334                         break;
335                         
336                 case AE_BOTTOM_TO_TOPLEFT:
337                         ui_draw_anti_tria((float)az->x1, (float)az->y2, (float)az->x2, (float)az->y2, (float)(az->x1 + az->x2) / 2, (float)az->y1);
338                         break;
339
340                 case AE_LEFT_TO_TOPRIGHT:
341                         ui_draw_anti_tria((float)az->x2, (float)az->y1, (float)az->x2, (float)az->y2, (float)az->x1, (float)(az->y1 + az->y2) / 2);
342                         break;
343                         
344                 case AE_RIGHT_TO_TOPLEFT:
345                         ui_draw_anti_tria((float)az->x1, (float)az->y1, (float)az->x1, (float)az->y2, (float)az->x2, (float)(az->y1 + az->y2) / 2);
346                         break;
347                         
348         }
349         
350         glDisable(GL_BLEND);
351 }
352
353 /* only exported for WM */
354 void ED_area_overdraw(bContext *C)
355 {
356         wmWindow *win = CTX_wm_window(C);
357         bScreen *screen = CTX_wm_screen(C);
358         ScrArea *sa;
359         
360         /* Draw AZones, in screenspace */
361         wmSubWindowSet(win, screen->mainwin);
362
363         glEnable(GL_BLEND);
364         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
365         
366         for (sa = screen->areabase.first; sa; sa = sa->next) {
367                 AZone *az;
368                 for (az = sa->actionzones.first; az; az = az->next) {
369                         if (az->do_draw) {
370                                 if (az->type == AZONE_AREA) {
371                                         area_draw_azone(az->x1, az->y1, az->x2, az->y2);
372                                 }
373                                 else if (az->type == AZONE_REGION) {
374                                         
375                                         if (az->ar) {
376                                                 /* only display tab or icons when the region is hidden */
377                                                 if (az->ar->flag & (RGN_FLAG_HIDDEN | RGN_FLAG_TOO_SMALL)) {
378                                                         if (G.debug_value == 3)
379                                                                 region_draw_azone_icon(az);
380                                                         else if (G.debug_value == 2)
381                                                                 region_draw_azone_tria(az);
382                                                         else if (G.debug_value == 1)
383                                                                 region_draw_azone_tab(az);
384                                                         else
385                                                                 region_draw_azone_tab_plus(az);
386                                                 }
387                                         }
388                                 }
389                                 
390                                 az->do_draw = FALSE;
391                         }
392                 }
393         }
394         glDisable(GL_BLEND);
395         
396 }
397
398 /* only exported for WM */
399 /* makes region ready for drawing, sets pixelspace */
400 void ED_region_set(const bContext *C, ARegion *ar)
401 {
402         wmWindow *win = CTX_wm_window(C);
403         ScrArea *sa = CTX_wm_area(C);
404         
405         ar->drawrct = ar->winrct;
406         
407         /* note; this sets state, so we can use wmOrtho and friends */
408         wmSubWindowScissorSet(win, ar->swinid, &ar->drawrct);
409         
410         UI_SetTheme(sa ? sa->spacetype : 0, ar->type ? ar->type->regionid : 0);
411         
412         ED_region_pixelspace(ar);
413 }
414
415
416 /* only exported for WM */
417 void ED_region_do_draw(bContext *C, ARegion *ar)
418 {
419         wmWindow *win = CTX_wm_window(C);
420         ScrArea *sa = CTX_wm_area(C);
421         ARegionType *at = ar->type;
422         
423         /* see BKE_spacedata_draw_locks() */
424         if (at->do_lock)
425                 return;
426         
427         /* if no partial draw rect set, full rect */
428         if (ar->drawrct.xmin == ar->drawrct.xmax)
429                 ar->drawrct = ar->winrct;
430         else {
431                 /* extra clip for safety (intersect the rects, could use API func) */
432                 ar->drawrct.xmin = max_ii(ar->winrct.xmin, ar->drawrct.xmin);
433                 ar->drawrct.ymin = max_ii(ar->winrct.ymin, ar->drawrct.ymin);
434                 ar->drawrct.xmax = min_ii(ar->winrct.xmax, ar->drawrct.xmax);
435                 ar->drawrct.ymax = min_ii(ar->winrct.ymax, ar->drawrct.ymax);
436         }
437         
438         /* note; this sets state, so we can use wmOrtho and friends */
439         wmSubWindowScissorSet(win, ar->swinid, &ar->drawrct);
440         
441         UI_SetTheme(sa ? sa->spacetype : 0, ar->type ? ar->type->regionid : 0);
442         
443         /* optional header info instead? */
444         if (ar->headerstr) {
445                 UI_ThemeClearColor(TH_HEADER);
446                 glClear(GL_COLOR_BUFFER_BIT);
447                 
448                 UI_ThemeColor(TH_TEXT);
449                 BLF_draw_default(20, 8, 0.0f, ar->headerstr, BLF_DRAW_STR_DUMMY_MAX);
450         }
451         else if (at->draw) {
452                 at->draw(C, ar);
453         }
454
455         /* XXX test: add convention to end regions always in pixel space, for drawing of borders/gestures etc */
456         ED_region_pixelspace(ar);
457
458         ED_region_draw_cb_draw(C, ar, REGION_DRAW_POST_PIXEL);
459
460         ar->do_draw = FALSE;
461         memset(&ar->drawrct, 0, sizeof(ar->drawrct));
462         
463         uiFreeInactiveBlocks(C, &ar->uiblocks);
464
465         if (sa)
466                 region_draw_emboss(ar, &ar->winrct);
467 }
468
469 /* **********************************
470  * maybe silly, but let's try for now
471  * to keep these tags protected
472  * ********************************** */
473
474 void ED_region_tag_redraw(ARegion *ar)
475 {
476         if (ar) {
477                 /* zero region means full region redraw */
478                 ar->do_draw = RGN_DRAW;
479                 memset(&ar->drawrct, 0, sizeof(ar->drawrct));
480         }
481 }
482
483 void ED_region_tag_redraw_overlay(ARegion *ar)
484 {
485         if (ar)
486                 ar->do_draw_overlay = RGN_DRAW;
487 }
488
489 void ED_region_tag_redraw_partial(ARegion *ar, rcti *rct)
490 {
491         if (ar) {
492                 if (!ar->do_draw) {
493                         /* no redraw set yet, set partial region */
494                         ar->do_draw = RGN_DRAW_PARTIAL;
495                         ar->drawrct = *rct;
496                 }
497                 else if (ar->drawrct.xmin != ar->drawrct.xmax) {
498                         /* partial redraw already set, expand region */
499                         BLI_rcti_union(&ar->drawrct, rct);
500                 }
501         }
502 }
503
504 void ED_area_tag_redraw(ScrArea *sa)
505 {
506         ARegion *ar;
507         
508         if (sa)
509                 for (ar = sa->regionbase.first; ar; ar = ar->next)
510                         ED_region_tag_redraw(ar);
511 }
512
513 void ED_area_tag_redraw_regiontype(ScrArea *sa, int regiontype)
514 {
515         ARegion *ar;
516         
517         if (sa) {
518                 for (ar = sa->regionbase.first; ar; ar = ar->next) {
519                         if (ar->regiontype == regiontype) {
520                                 ED_region_tag_redraw(ar);
521                         }
522                 }
523         }
524 }
525
526 void ED_area_tag_refresh(ScrArea *sa)
527 {
528         if (sa)
529                 sa->do_refresh = TRUE;
530 }
531
532 /* *************************************************************** */
533
534 /* use NULL to disable it */
535 void ED_area_headerprint(ScrArea *sa, const char *str)
536 {
537         ARegion *ar;
538
539         /* happens when running transform operators in backround mode */
540         if (sa == NULL)
541                 return;
542
543         for (ar = sa->regionbase.first; ar; ar = ar->next) {
544                 if (ar->regiontype == RGN_TYPE_HEADER) {
545                         if (str) {
546                                 if (ar->headerstr == NULL)
547                                         ar->headerstr = MEM_mallocN(256, "headerprint");
548                                 BLI_strncpy(ar->headerstr, str, 256);
549                         }
550                         else if (ar->headerstr) {
551                                 MEM_freeN(ar->headerstr);
552                                 ar->headerstr = NULL;
553                         }
554                         ED_region_tag_redraw(ar);
555                 }
556         }
557 }
558
559 /* ************************************************************ */
560
561
562 static void area_azone_initialize(bScreen *screen, ScrArea *sa)
563 {
564         AZone *az;
565         
566         /* reinitalize entirely, regions add azones too */
567         BLI_freelistN(&sa->actionzones);
568
569         if (screen->full != SCREENNORMAL) {
570                 return;
571         }
572
573         /* set area action zones */
574         az = (AZone *)MEM_callocN(sizeof(AZone), "actionzone");
575         BLI_addtail(&(sa->actionzones), az);
576         az->type = AZONE_AREA;
577         az->x1 = sa->totrct.xmin - 1;
578         az->y1 = sa->totrct.ymin - 1;
579         az->x2 = sa->totrct.xmin + (AZONESPOT - 1);
580         az->y2 = sa->totrct.ymin + (AZONESPOT - 1);
581         BLI_rcti_init(&az->rect, az->x1, az->x2, az->y1, az->y2);
582         
583         az = (AZone *)MEM_callocN(sizeof(AZone), "actionzone");
584         BLI_addtail(&(sa->actionzones), az);
585         az->type = AZONE_AREA;
586         az->x1 = sa->totrct.xmax + 1;
587         az->y1 = sa->totrct.ymax + 1;
588         az->x2 = sa->totrct.xmax - (AZONESPOT - 1);
589         az->y2 = sa->totrct.ymax - (AZONESPOT - 1);
590         BLI_rcti_init(&az->rect, az->x1, az->x2, az->y1, az->y2);
591 }
592
593 #define AZONEPAD_EDGE   (0.2f * U.widget_unit)
594 #define AZONEPAD_ICON   (0.45f * U.widget_unit)
595 static void region_azone_edge(AZone *az, ARegion *ar)
596 {
597         switch (az->edge) {
598                 case AE_TOP_TO_BOTTOMRIGHT:
599                         az->x1 = ar->winrct.xmin;
600                         az->y1 = ar->winrct.ymax - AZONEPAD_EDGE;
601                         az->x2 = ar->winrct.xmax;
602                         az->y2 = ar->winrct.ymax;
603                         break;
604                 case AE_BOTTOM_TO_TOPLEFT:
605                         az->x1 = ar->winrct.xmin;
606                         az->y1 = ar->winrct.ymin + AZONEPAD_EDGE;
607                         az->x2 = ar->winrct.xmax;
608                         az->y2 = ar->winrct.ymin;
609                         break;
610                 case AE_LEFT_TO_TOPRIGHT:
611                         az->x1 = ar->winrct.xmin;
612                         az->y1 = ar->winrct.ymin;
613                         az->x2 = ar->winrct.xmin + AZONEPAD_EDGE;
614                         az->y2 = ar->winrct.ymax;
615                         break;
616                 case AE_RIGHT_TO_TOPLEFT:
617                         az->x1 = ar->winrct.xmax;
618                         az->y1 = ar->winrct.ymin;
619                         az->x2 = ar->winrct.xmax - AZONEPAD_EDGE;
620                         az->y2 = ar->winrct.ymax;
621                         break;
622         }
623
624         BLI_rcti_init(&az->rect, az->x1, az->x2, az->y1, az->y2);
625 }
626
627 static void region_azone_icon(ScrArea *sa, AZone *az, ARegion *ar)
628 {
629         AZone *azt;
630         int tot = 0;
631         
632         /* count how many actionzones with along same edge are available.
633          * This allows for adding more action zones in the future without
634          * having to worry about correct offset */
635         for (azt = sa->actionzones.first; azt; azt = azt->next) {
636                 if (azt->edge == az->edge) tot++;
637         }
638         
639         switch (az->edge) {
640                 case AE_TOP_TO_BOTTOMRIGHT:
641                         az->x1 = ar->winrct.xmax - tot * 2 * AZONEPAD_ICON;
642                         az->y1 = ar->winrct.ymax + AZONEPAD_ICON;
643                         az->x2 = ar->winrct.xmax - tot * AZONEPAD_ICON;
644                         az->y2 = ar->winrct.ymax + 2 * AZONEPAD_ICON;
645                         break;
646                 case AE_BOTTOM_TO_TOPLEFT:
647                         az->x1 = ar->winrct.xmin + AZONEPAD_ICON;
648                         az->y1 = ar->winrct.ymin - 2 * AZONEPAD_ICON;
649                         az->x2 = ar->winrct.xmin + 2 * AZONEPAD_ICON;
650                         az->y2 = ar->winrct.ymin - AZONEPAD_ICON;
651                         break;
652                 case AE_LEFT_TO_TOPRIGHT:
653                         az->x1 = ar->winrct.xmin - 2 * AZONEPAD_ICON;
654                         az->y1 = ar->winrct.ymax - tot * 2 * AZONEPAD_ICON;
655                         az->x2 = ar->winrct.xmin - AZONEPAD_ICON;
656                         az->y2 = ar->winrct.ymax - tot * AZONEPAD_ICON;
657                         break;
658                 case AE_RIGHT_TO_TOPLEFT:
659                         az->x1 = ar->winrct.xmax + AZONEPAD_ICON;
660                         az->y1 = ar->winrct.ymax - tot * 2 * AZONEPAD_ICON;
661                         az->x2 = ar->winrct.xmax + 2 * AZONEPAD_ICON;
662                         az->y2 = ar->winrct.ymax - tot * AZONEPAD_ICON;
663                         break;
664         }
665
666         BLI_rcti_init(&az->rect, az->x1, az->x2, az->y1, az->y2);
667         
668         /* if more azones on 1 spot, set offset */
669         for (azt = sa->actionzones.first; azt; azt = azt->next) {
670                 if (az != azt) {
671                         if (ABS(az->x1 - azt->x1) < 2 && ABS(az->y1 - azt->y1) < 2) {
672                                 if (az->edge == AE_TOP_TO_BOTTOMRIGHT || az->edge == AE_BOTTOM_TO_TOPLEFT) {
673                                         az->x1 += AZONESPOT;
674                                         az->x2 += AZONESPOT;
675                                 }
676                                 else {
677                                         az->y1 -= AZONESPOT;
678                                         az->y2 -= AZONESPOT;
679                                 }
680                                 BLI_rcti_init(&az->rect, az->x1, az->x2, az->y1, az->y2);
681                         }
682                 }
683         }
684 }
685
686 #define AZONEPAD_TAB_PLUSW  (0.7f * U.widget_unit)
687 #define AZONEPAD_TAB_PLUSH  (0.7f * U.widget_unit)
688
689 /* region already made zero sized, in shape of edge */
690 static void region_azone_tab_plus(ScrArea *sa, AZone *az, ARegion *ar)
691 {
692         AZone *azt;
693         int tot = 0, add;
694         
695         for (azt = sa->actionzones.first; azt; azt = azt->next) {
696                 if (azt->edge == az->edge) tot++;
697         }
698         
699         switch (az->edge) {
700                 case AE_TOP_TO_BOTTOMRIGHT:
701                         if (ar->winrct.ymax == sa->totrct.ymin) add = 1; else add = 0;
702                         az->x1 = ar->winrct.xmax - 2.5 * AZONEPAD_TAB_PLUSW;
703                         az->y1 = ar->winrct.ymax - add;
704                         az->x2 = ar->winrct.xmax - 1.5 * AZONEPAD_TAB_PLUSW;
705                         az->y2 = ar->winrct.ymax - add + AZONEPAD_TAB_PLUSH;
706                         break;
707                 case AE_BOTTOM_TO_TOPLEFT:
708                         az->x1 = ar->winrct.xmax - 2.5 * AZONEPAD_TAB_PLUSW;
709                         az->y1 = ar->winrct.ymin - AZONEPAD_TAB_PLUSH;
710                         az->x2 = ar->winrct.xmax - 1.5 * AZONEPAD_TAB_PLUSW;
711                         az->y2 = ar->winrct.ymin;
712                         break;
713                 case AE_LEFT_TO_TOPRIGHT:
714                         az->x1 = ar->winrct.xmin - AZONEPAD_TAB_PLUSH;
715                         az->y1 = ar->winrct.ymax - 2.5 * AZONEPAD_TAB_PLUSW;
716                         az->x2 = ar->winrct.xmin;
717                         az->y2 = ar->winrct.ymax - 1.5 * AZONEPAD_TAB_PLUSW;
718                         break;
719                 case AE_RIGHT_TO_TOPLEFT:
720                         az->x1 = ar->winrct.xmax - 1;
721                         az->y1 = ar->winrct.ymax - 2.5 * AZONEPAD_TAB_PLUSW;
722                         az->x2 = ar->winrct.xmax - 1 + AZONEPAD_TAB_PLUSH;
723                         az->y2 = ar->winrct.ymax - 1.5 * AZONEPAD_TAB_PLUSW;
724                         break;
725         }
726         /* rect needed for mouse pointer test */
727         BLI_rcti_init(&az->rect, az->x1, az->x2, az->y1, az->y2);
728 }       
729
730
731 #define AZONEPAD_TABW   (0.9f * U.widget_unit)
732 #define AZONEPAD_TABH   (0.35f * U.widget_unit)
733
734 /* region already made zero sized, in shape of edge */
735 static void region_azone_tab(ScrArea *sa, AZone *az, ARegion *ar)
736 {
737         AZone *azt;
738         int tot = 0, add;
739         
740         for (azt = sa->actionzones.first; azt; azt = azt->next) {
741                 if (azt->edge == az->edge) tot++;
742         }
743         
744         switch (az->edge) {
745                 case AE_TOP_TO_BOTTOMRIGHT:
746                         if (ar->winrct.ymax == sa->totrct.ymin) add = 1; else add = 0;
747                         az->x1 = ar->winrct.xmax - 2 * AZONEPAD_TABW;
748                         az->y1 = ar->winrct.ymax - add;
749                         az->x2 = ar->winrct.xmax - AZONEPAD_TABW;
750                         az->y2 = ar->winrct.ymax - add + AZONEPAD_TABH;
751                         break;
752                 case AE_BOTTOM_TO_TOPLEFT:
753                         az->x1 = ar->winrct.xmin + AZONEPAD_TABW;
754                         az->y1 = ar->winrct.ymin - AZONEPAD_TABH;
755                         az->x2 = ar->winrct.xmin + 2 * AZONEPAD_TABW;
756                         az->y2 = ar->winrct.ymin;
757                         break;
758                 case AE_LEFT_TO_TOPRIGHT:
759                         az->x1 = ar->winrct.xmin + 1 - AZONEPAD_TABH;
760                         az->y1 = ar->winrct.ymax - 2 * AZONEPAD_TABW;
761                         az->x2 = ar->winrct.xmin + 1;
762                         az->y2 = ar->winrct.ymax - AZONEPAD_TABW;
763                         break;
764                 case AE_RIGHT_TO_TOPLEFT:
765                         az->x1 = ar->winrct.xmax - 1;
766                         az->y1 = ar->winrct.ymax - 2 * AZONEPAD_TABW;
767                         az->x2 = ar->winrct.xmax - 1 + AZONEPAD_TABH;
768                         az->y2 = ar->winrct.ymax - AZONEPAD_TABW;
769                         break;
770         }
771         /* rect needed for mouse pointer test */
772         BLI_rcti_init(&az->rect, az->x1, az->x2, az->y1, az->y2);
773 }       
774
775 #define AZONEPAD_TRIAW  (0.8f * U.widget_unit)
776 #define AZONEPAD_TRIAH  (0.45f * U.widget_unit)
777
778
779 /* region already made zero sized, in shape of edge */
780 static void region_azone_tria(ScrArea *sa, AZone *az, ARegion *ar)
781 {
782         AZone *azt;
783         int tot = 0, add;
784         
785         for (azt = sa->actionzones.first; azt; azt = azt->next) {
786                 if (azt->edge == az->edge) tot++;
787         }
788         
789         switch (az->edge) {
790                 case AE_TOP_TO_BOTTOMRIGHT:
791                         if (ar->winrct.ymax == sa->totrct.ymin) add = 1; else add = 0;
792                         az->x1 = ar->winrct.xmax - 2 * AZONEPAD_TRIAW;
793                         az->y1 = ar->winrct.ymax - add;
794                         az->x2 = ar->winrct.xmax - AZONEPAD_TRIAW;
795                         az->y2 = ar->winrct.ymax - add + AZONEPAD_TRIAH;
796                         break;
797                 case AE_BOTTOM_TO_TOPLEFT:
798                         az->x1 = ar->winrct.xmin + AZONEPAD_TRIAW;
799                         az->y1 = ar->winrct.ymin - AZONEPAD_TRIAH;
800                         az->x2 = ar->winrct.xmin + 2 * AZONEPAD_TRIAW;
801                         az->y2 = ar->winrct.ymin;
802                         break;
803                 case AE_LEFT_TO_TOPRIGHT:
804                         az->x1 = ar->winrct.xmin + 1 - AZONEPAD_TRIAH;
805                         az->y1 = ar->winrct.ymax - 2 * AZONEPAD_TRIAW;
806                         az->x2 = ar->winrct.xmin + 1;
807                         az->y2 = ar->winrct.ymax - AZONEPAD_TRIAW;
808                         break;
809                 case AE_RIGHT_TO_TOPLEFT:
810                         az->x1 = ar->winrct.xmax - 1;
811                         az->y1 = ar->winrct.ymax - 2 * AZONEPAD_TRIAW;
812                         az->x2 = ar->winrct.xmax - 1 + AZONEPAD_TRIAH;
813                         az->y2 = ar->winrct.ymax - AZONEPAD_TRIAW;
814                         break;
815         }
816         /* rect needed for mouse pointer test */
817         BLI_rcti_init(&az->rect, az->x1, az->x2, az->y1, az->y2);
818 }       
819
820
821 static void region_azone_initialize(ScrArea *sa, ARegion *ar, AZEdge edge) 
822 {
823         AZone *az;
824         
825         az = (AZone *)MEM_callocN(sizeof(AZone), "actionzone");
826         BLI_addtail(&(sa->actionzones), az);
827         az->type = AZONE_REGION;
828         az->ar = ar;
829         az->edge = edge;
830         
831         if (ar->flag & (RGN_FLAG_HIDDEN | RGN_FLAG_TOO_SMALL)) {
832                 if (G.debug_value == 3)
833                         region_azone_icon(sa, az, ar);
834                 else if (G.debug_value == 2)
835                         region_azone_tria(sa, az, ar);
836                 else if (G.debug_value == 1)
837                         region_azone_tab(sa, az, ar);
838                 else
839                         region_azone_tab_plus(sa, az, ar);
840         }
841         else {
842                 region_azone_edge(az, ar);
843         }
844         
845 }
846
847
848 /* *************************************************************** */
849
850 static void region_azone_add(ScrArea *sa, ARegion *ar, int alignment)
851 {
852         /* edge code (t b l r) is along which area edge azone will be drawn */
853         
854         if (alignment == RGN_ALIGN_TOP)
855                 region_azone_initialize(sa, ar, AE_BOTTOM_TO_TOPLEFT);
856         else if (alignment == RGN_ALIGN_BOTTOM)
857                 region_azone_initialize(sa, ar, AE_TOP_TO_BOTTOMRIGHT);
858         else if (alignment == RGN_ALIGN_RIGHT)
859                 region_azone_initialize(sa, ar, AE_LEFT_TO_TOPRIGHT);
860         else if (alignment == RGN_ALIGN_LEFT)
861                 region_azone_initialize(sa, ar, AE_RIGHT_TO_TOPLEFT);
862 }
863
864 /* dir is direction to check, not the splitting edge direction! */
865 static int rct_fits(rcti *rect, char dir, int size)
866 {
867         if (dir == 'h') {
868                 return BLI_rcti_size_x(rect) - size;
869         }
870         else {  /* 'v' */
871                 return BLI_rcti_size_y(rect) - size;
872         }
873 }
874
875 /* *************************************************************** */
876
877 /* overlapping regions only in the following restricted cases */
878 static int region_is_overlap(wmWindow *win, ScrArea *sa, ARegion *ar)
879 {
880         if (U.uiflag2 & USER_REGION_OVERLAP)
881                 if (WM_is_draw_triple(win))
882                         if (ELEM5(sa->spacetype, SPACE_VIEW3D, SPACE_IMAGE, SPACE_SEQ, SPACE_CLIP, SPACE_NODE))
883                                 if (ELEM3(ar->regiontype, RGN_TYPE_TOOLS, RGN_TYPE_UI, RGN_TYPE_TOOL_PROPS))
884                                         return 1;
885         return 0;
886 }
887
888 static void region_rect_recursive(wmWindow *win, ScrArea *sa, ARegion *ar, rcti *remainder, int quad)
889 {
890         rcti *remainder_prev = remainder;
891         int prefsizex, prefsizey;
892         int alignment;
893         
894         if (ar == NULL)
895                 return;
896         
897         /* no returns in function, winrct gets set in the end again */
898         BLI_rcti_init(&ar->winrct, 0, 0, 0, 0);
899         
900         /* for test; allow split of previously defined region */
901         if (ar->alignment & RGN_SPLIT_PREV)
902                 if (ar->prev)
903                         remainder = &ar->prev->winrct;
904         
905         alignment = ar->alignment & ~RGN_SPLIT_PREV;
906         
907         /* set here, assuming userpref switching forces to call this again */
908         ar->overlap = region_is_overlap(win, sa, ar);
909
910         /* clear state flags first */
911         ar->flag &= ~RGN_FLAG_TOO_SMALL;
912         /* user errors */
913         if (ar->next == NULL && alignment != RGN_ALIGN_QSPLIT)
914                 alignment = RGN_ALIGN_NONE;
915         
916         /* prefsize, for header we stick to exception */
917         prefsizex = ar->sizex ? ar->sizex : UI_DPI_FAC * ar->type->prefsizex;
918         if (ar->regiontype == RGN_TYPE_HEADER) {
919                 prefsizey = ED_area_headersize();
920         }
921         else if (ar->regiontype == RGN_TYPE_UI && sa->spacetype == SPACE_FILE) {
922                 prefsizey = UI_UNIT_Y * 2 + (UI_UNIT_Y / 2);
923         }
924         else {
925                 prefsizey = ar->sizey ? ar->sizey : UI_DPI_FAC * ar->type->prefsizey;
926         }
927
928
929         if (ar->flag & RGN_FLAG_HIDDEN) {
930                 /* hidden is user flag */
931         }
932         else if (alignment == RGN_ALIGN_FLOAT) {
933                 /* XXX floating area region, not handled yet here */
934         }
935         else if (rct_fits(remainder, 'v', 1) < 0 || rct_fits(remainder, 'h', 1) < 0) {
936                 /* remainder is too small for any usage */
937                 ar->flag |= RGN_FLAG_TOO_SMALL;
938         }
939         else if (alignment == RGN_ALIGN_NONE) {
940                 /* typically last region */
941                 ar->winrct = *remainder;
942                 BLI_rcti_init(remainder, 0, 0, 0, 0);
943         }
944         else if (alignment == RGN_ALIGN_TOP || alignment == RGN_ALIGN_BOTTOM) {
945                 
946                 if (rct_fits(remainder, 'v', prefsizey) < 0) {
947                         ar->flag |= RGN_FLAG_TOO_SMALL;
948                 }
949                 else {
950                         int fac = rct_fits(remainder, 'v', prefsizey);
951
952                         if (fac < 0)
953                                 prefsizey += fac;
954                         
955                         ar->winrct = *remainder;
956                         
957                         if (alignment == RGN_ALIGN_TOP) {
958                                 ar->winrct.ymin = ar->winrct.ymax - prefsizey + 1;
959                                 remainder->ymax = ar->winrct.ymin - 1;
960                         }
961                         else {
962                                 ar->winrct.ymax = ar->winrct.ymin + prefsizey - 1;
963                                 remainder->ymin = ar->winrct.ymax + 1;
964                         }
965                 }
966         }
967         else if (ELEM(alignment, RGN_ALIGN_LEFT, RGN_ALIGN_RIGHT)) {
968                 
969                 if (rct_fits(remainder, 'h', prefsizex) < 0) {
970                         ar->flag |= RGN_FLAG_TOO_SMALL;
971                 }
972                 else {
973                         int fac = rct_fits(remainder, 'h', prefsizex);
974                         
975                         if (fac < 0)
976                                 prefsizex += fac;
977                         
978                         ar->winrct = *remainder;
979                         
980                         if (alignment == RGN_ALIGN_RIGHT) {
981                                 ar->winrct.xmin = ar->winrct.xmax - prefsizex + 1;
982                                 if (ar->overlap == 0)
983                                         remainder->xmax = ar->winrct.xmin - 1;
984                         }
985                         else {
986                                 ar->winrct.xmax = ar->winrct.xmin + prefsizex - 1;
987                                 if (ar->overlap == 0)
988                                         remainder->xmin = ar->winrct.xmax + 1;
989                         }
990                 }
991         }
992         else if (alignment == RGN_ALIGN_VSPLIT || alignment == RGN_ALIGN_HSPLIT) {
993                 /* percentage subdiv*/
994                 ar->winrct = *remainder;
995                 
996                 if (alignment == RGN_ALIGN_HSPLIT) {
997                         if (rct_fits(remainder, 'h', prefsizex) > 4) {
998                                 ar->winrct.xmax = BLI_rcti_cent_x(remainder);
999                                 remainder->xmin = ar->winrct.xmax + 1;
1000                         }
1001                         else {
1002                                 BLI_rcti_init(remainder, 0, 0, 0, 0);
1003                         }
1004                 }
1005                 else {
1006                         if (rct_fits(remainder, 'v', prefsizey) > 4) {
1007                                 ar->winrct.ymax = BLI_rcti_cent_y(remainder);
1008                                 remainder->ymin = ar->winrct.ymax + 1;
1009                         }
1010                         else {
1011                                 BLI_rcti_init(remainder, 0, 0, 0, 0);
1012                         }
1013                 }
1014         }
1015         else if (alignment == RGN_ALIGN_QSPLIT) {
1016                 ar->winrct = *remainder;
1017                 
1018                 /* test if there's still 4 regions left */
1019                 if (quad == 0) {
1020                         ARegion *artest = ar->next;
1021                         int count = 1;
1022                         
1023                         while (artest) {
1024                                 artest->alignment = RGN_ALIGN_QSPLIT;
1025                                 artest = artest->next;
1026                                 count++;
1027                         }
1028                         
1029                         if (count != 4) {
1030                                 /* let's stop adding regions */
1031                                 BLI_rcti_init(remainder, 0, 0, 0, 0);
1032                                 if (G.debug & G_DEBUG)
1033                                         printf("region quadsplit failed\n");
1034                         }
1035                         else quad = 1;
1036                 }
1037                 if (quad) {
1038                         if (quad == 1) { /* left bottom */
1039                                 ar->winrct.xmax = BLI_rcti_cent_x(remainder);
1040                                 ar->winrct.ymax = BLI_rcti_cent_y(remainder);
1041                         }
1042                         else if (quad == 2) { /* left top */
1043                                 ar->winrct.xmax = BLI_rcti_cent_x(remainder);
1044                                 ar->winrct.ymin = BLI_rcti_cent_y(remainder) + 1;
1045                         }
1046                         else if (quad == 3) { /* right bottom */
1047                                 ar->winrct.xmin = BLI_rcti_cent_x(remainder) + 1;
1048                                 ar->winrct.ymax = BLI_rcti_cent_y(remainder);
1049                         }
1050                         else {  /* right top */
1051                                 ar->winrct.xmin = BLI_rcti_cent_x(remainder) + 1;
1052                                 ar->winrct.ymin = BLI_rcti_cent_y(remainder) + 1;
1053                                 BLI_rcti_init(remainder, 0, 0, 0, 0);
1054                         }
1055
1056                         quad++;
1057                 }
1058         }
1059         
1060         /* for speedup */
1061         ar->winx = BLI_rcti_size_x(&ar->winrct) + 1;
1062         ar->winy = BLI_rcti_size_y(&ar->winrct) + 1;
1063         
1064         /* set winrect for azones */
1065         if (ar->flag & (RGN_FLAG_HIDDEN | RGN_FLAG_TOO_SMALL)) {
1066                 ar->winrct = *remainder;
1067                 
1068                 if (alignment == RGN_ALIGN_TOP)
1069                         ar->winrct.ymin = ar->winrct.ymax;
1070                 else if (alignment == RGN_ALIGN_BOTTOM)
1071                         ar->winrct.ymax = ar->winrct.ymin;
1072                 else if (alignment == RGN_ALIGN_RIGHT)
1073                         ar->winrct.xmin = ar->winrct.xmax;
1074                 else if (alignment == RGN_ALIGN_LEFT)
1075                         ar->winrct.xmax = ar->winrct.xmin;
1076                 else /* prevent winrct to be valid */
1077                         ar->winrct.xmax = ar->winrct.xmin;
1078         }
1079
1080         /* restore prev-split exception */
1081         if (ar->alignment & RGN_SPLIT_PREV) {
1082                 if (ar->prev) {
1083                         remainder = remainder_prev;
1084                         ar->prev->winx = BLI_rcti_size_x(&ar->prev->winrct) + 1;
1085                         ar->prev->winy = BLI_rcti_size_y(&ar->prev->winrct) + 1;
1086                 }
1087         }
1088         
1089         /* in end, add azones, where appropriate */
1090         if (ar->regiontype == RGN_TYPE_HEADER && ar->winy + 6 > sa->winy) {
1091                 /* The logic for this is: when the header takes up the full area,
1092                  * disallow hiding it to view the main window.
1093                  *
1094                  * Without this, you can drag down the file selectors header and hide it
1095                  * by accident very easily (highly annoying!), the value 6 is arbitrary
1096                  * but accounts for small common rounding problems when scaling the UI,
1097                  * must be minimum '4' */
1098         }
1099         else {
1100                 region_azone_add(sa, ar, alignment);
1101         }
1102
1103         region_rect_recursive(win, sa, ar->next, remainder, quad);
1104 }
1105
1106 static void area_calc_totrct(ScrArea *sa, int sizex, int sizey)
1107 {
1108         short rt = U.pixelsize > 1 ? 1 : 0;
1109
1110         if (sa->v1->vec.x > 0) sa->totrct.xmin = sa->v1->vec.x + 1 + rt;
1111         else sa->totrct.xmin = sa->v1->vec.x;
1112         if (sa->v4->vec.x < sizex - 1) sa->totrct.xmax = sa->v4->vec.x - 1 - rt;
1113         else sa->totrct.xmax = sa->v4->vec.x;
1114         
1115         if (sa->v1->vec.y > 0) sa->totrct.ymin = sa->v1->vec.y + 1 + rt;
1116         else sa->totrct.ymin = sa->v1->vec.y;
1117         if (sa->v2->vec.y < sizey - 1) sa->totrct.ymax = sa->v2->vec.y - 1 - rt;
1118         else sa->totrct.ymax = sa->v2->vec.y;
1119         
1120         /* for speedup */
1121         sa->winx = BLI_rcti_size_x(&sa->totrct) + 1;
1122         sa->winy = BLI_rcti_size_y(&sa->totrct) + 1;
1123 }
1124
1125
1126 /* used for area initialize below */
1127 static void region_subwindow(wmWindow *win, ARegion *ar)
1128 {
1129         if (ar->flag & (RGN_FLAG_HIDDEN | RGN_FLAG_TOO_SMALL)) {
1130                 if (ar->swinid)
1131                         wm_subwindow_close(win, ar->swinid);
1132                 ar->swinid = 0;
1133         }
1134         else if (ar->swinid == 0)
1135                 ar->swinid = wm_subwindow_open(win, &ar->winrct);
1136         else 
1137                 wm_subwindow_position(win, ar->swinid, &ar->winrct);
1138 }
1139
1140 static void ed_default_handlers(wmWindowManager *wm, ScrArea *sa, ListBase *handlers, int flag)
1141 {
1142         /* note, add-handler checks if it already exists */
1143         
1144         /* XXX it would be good to have boundbox checks for some of these... */
1145         if (flag & ED_KEYMAP_UI) {
1146                 /* user interface widgets */
1147                 UI_add_region_handlers(handlers);
1148         }
1149         if (flag & ED_KEYMAP_VIEW2D) {
1150                 /* 2d-viewport handling+manipulation */
1151                 wmKeyMap *keymap = WM_keymap_find(wm->defaultconf, "View2D", 0, 0);
1152                 WM_event_add_keymap_handler(handlers, keymap);
1153         }
1154         if (flag & ED_KEYMAP_MARKERS) {
1155                 /* time-markers */
1156                 wmKeyMap *keymap = WM_keymap_find(wm->defaultconf, "Markers", 0, 0);
1157                 
1158                 /* time space only has this keymap, the others get a boundbox restricted map */
1159                 if (sa->spacetype != SPACE_TIME) {
1160                         ARegion *ar;
1161                         static rcti rect = {0, 10000, 0, 30};    /* same local check for all areas */
1162                         ar = BKE_area_find_region_type(sa, RGN_TYPE_WINDOW);
1163                         if (ar) {
1164                                 WM_event_add_keymap_handler_bb(handlers, keymap, &rect, &ar->winrct);
1165                         }
1166                 }
1167                 else
1168                         WM_event_add_keymap_handler(handlers, keymap);
1169         }
1170         if (flag & ED_KEYMAP_ANIMATION) {
1171                 /* frame changing and timeline operators (for time spaces) */
1172                 wmKeyMap *keymap = WM_keymap_find(wm->defaultconf, "Animation", 0, 0);
1173                 WM_event_add_keymap_handler(handlers, keymap);
1174         }
1175         if (flag & ED_KEYMAP_FRAMES) {
1176                 /* frame changing/jumping (for all spaces) */
1177                 wmKeyMap *keymap = WM_keymap_find(wm->defaultconf, "Frames", 0, 0);
1178                 WM_event_add_keymap_handler(handlers, keymap);
1179         }
1180         if (flag & ED_KEYMAP_GPENCIL) {
1181                 /* grease pencil */
1182                 wmKeyMap *keymap = WM_keymap_find(wm->defaultconf, "Grease Pencil", 0, 0);
1183                 WM_event_add_keymap_handler(handlers, keymap);
1184         }
1185         if (flag & ED_KEYMAP_HEADER) {
1186                 /* standard keymap for headers regions */
1187                 wmKeyMap *keymap = WM_keymap_find(wm->defaultconf, "Header", 0, 0);
1188                 WM_event_add_keymap_handler(handlers, keymap);
1189         }
1190 }
1191
1192
1193 /* called in screen_refresh, or screens_init, also area size changes */
1194 void ED_area_initialize(wmWindowManager *wm, wmWindow *win, ScrArea *sa)
1195 {
1196         ARegion *ar;
1197         rcti rect;
1198         
1199         /* set typedefinitions */
1200         sa->type = BKE_spacetype_from_id(sa->spacetype);
1201         
1202         if (sa->type == NULL) {
1203                 sa->butspacetype = sa->spacetype = SPACE_VIEW3D;
1204                 sa->type = BKE_spacetype_from_id(sa->spacetype);
1205         }
1206         
1207         for (ar = sa->regionbase.first; ar; ar = ar->next)
1208                 ar->type = BKE_regiontype_from_id(sa->type, ar->regiontype);
1209         
1210         /* area sizes */
1211         area_calc_totrct(sa, WM_window_pixels_x(win), WM_window_pixels_y(win));
1212         
1213         /* clear all azones, add the area triange widgets */
1214         area_azone_initialize(win->screen, sa);
1215
1216         /* region rect sizes */
1217         rect = sa->totrct;
1218         region_rect_recursive(win, sa, sa->regionbase.first, &rect, 0);
1219         
1220         /* default area handlers */
1221         ed_default_handlers(wm, sa, &sa->handlers, sa->type->keymapflag);
1222         /* checks spacedata, adds own handlers */
1223         if (sa->type->init)
1224                 sa->type->init(wm, sa);
1225         
1226         /* region windows, default and own handlers */
1227         for (ar = sa->regionbase.first; ar; ar = ar->next) {
1228                 region_subwindow(win, ar);
1229                 
1230                 if (ar->swinid) {
1231                         /* default region handlers */
1232                         ed_default_handlers(wm, sa, &ar->handlers, ar->type->keymapflag);
1233                         /* own handlers */
1234                         if (ar->type->init)
1235                                 ar->type->init(wm, ar);
1236                 }
1237                 else {
1238                         /* prevent uiblocks to run */
1239                         uiFreeBlocks(NULL, &ar->uiblocks);
1240                 }
1241         }
1242 }
1243
1244 /* externally called for floating regions like menus */
1245 void ED_region_init(bContext *C, ARegion *ar)
1246 {
1247 //      ARegionType *at = ar->type;
1248         
1249         /* refresh can be called before window opened */
1250         region_subwindow(CTX_wm_window(C), ar);
1251         
1252         ar->winx = BLI_rcti_size_x(&ar->winrct) + 1;
1253         ar->winy = BLI_rcti_size_y(&ar->winrct) + 1;
1254         
1255         /* UI convention */
1256         wmOrtho2(-0.01f, ar->winx - 0.01f, -0.01f, ar->winy - 0.01f);
1257         glLoadIdentity();
1258 }
1259
1260 void ED_region_toggle_hidden(bContext *C, ARegion *ar)
1261 {
1262         ScrArea *sa = CTX_wm_area(C);
1263
1264         ar->flag ^= RGN_FLAG_HIDDEN;
1265
1266         if (ar->overlap) {
1267                 /* starts a timer, and in end calls the stuff below itself (region_sblend_invoke()) */
1268                 region_blend_start(C, sa, ar);
1269         }
1270         else {
1271                 if (ar->flag & RGN_FLAG_HIDDEN)
1272                         WM_event_remove_handlers(C, &ar->handlers);
1273
1274                 ED_area_initialize(CTX_wm_manager(C), CTX_wm_window(C), sa);
1275                 ED_area_tag_redraw(sa);
1276         }
1277 }
1278
1279 /* sa2 to sa1, we swap spaces for fullscreen to keep all allocated data */
1280 /* area vertices were set */
1281 void area_copy_data(ScrArea *sa1, ScrArea *sa2, int swap_space)
1282 {
1283         SpaceType *st;
1284         ARegion *ar;
1285         int spacetype = sa1->spacetype;
1286         
1287         sa1->headertype = sa2->headertype;
1288         sa1->spacetype = sa2->spacetype;
1289         sa1->butspacetype = sa2->butspacetype;
1290         
1291         if (swap_space == 1) {
1292                 SWAP(ListBase, sa1->spacedata, sa2->spacedata);
1293                 /* exception: ensure preview is reset */
1294 //              if (sa1->spacetype == SPACE_VIEW3D)
1295 // XXX                  BIF_view3d_previewrender_free(sa1->spacedata.first);
1296         }
1297         else if (swap_space == 2) {
1298                 BKE_spacedata_copylist(&sa1->spacedata, &sa2->spacedata);
1299         }
1300         else {
1301                 BKE_spacedata_freelist(&sa1->spacedata);
1302                 BKE_spacedata_copylist(&sa1->spacedata, &sa2->spacedata);
1303         }
1304         
1305         /* Note; SPACE_EMPTY is possible on new screens */
1306         
1307         /* regions */
1308         if (swap_space == 1) {
1309                 SWAP(ListBase, sa1->regionbase, sa2->regionbase);
1310         }
1311         else {
1312                 if (swap_space < 2) {
1313                         st = BKE_spacetype_from_id(spacetype);
1314                         for (ar = sa1->regionbase.first; ar; ar = ar->next)
1315                                 BKE_area_region_free(st, ar);
1316                         BLI_freelistN(&sa1->regionbase);
1317                 }
1318                 
1319                 st = BKE_spacetype_from_id(sa2->spacetype);
1320                 for (ar = sa2->regionbase.first; ar; ar = ar->next) {
1321                         ARegion *newar = BKE_area_region_copy(st, ar);
1322                         BLI_addtail(&sa1->regionbase, newar);
1323                 }
1324         }
1325 }
1326
1327 /* *********** Space switching code *********** */
1328
1329 void ED_area_swapspace(bContext *C, ScrArea *sa1, ScrArea *sa2)
1330 {
1331         ScrArea *tmp = MEM_callocN(sizeof(ScrArea), "addscrarea");
1332
1333         ED_area_exit(C, sa1);
1334         ED_area_exit(C, sa2);
1335
1336         area_copy_data(tmp, sa1, 2);
1337         area_copy_data(sa1, sa2, 0);
1338         area_copy_data(sa2, tmp, 0);
1339         ED_area_initialize(CTX_wm_manager(C), CTX_wm_window(C), sa1);
1340         ED_area_initialize(CTX_wm_manager(C), CTX_wm_window(C), sa2);
1341
1342         BKE_screen_area_free(tmp);
1343         MEM_freeN(tmp);
1344
1345         /* tell WM to refresh, cursor types etc */
1346         WM_event_add_mousemove(C);
1347         
1348         ED_area_tag_redraw(sa1);
1349         ED_area_tag_refresh(sa1);
1350         ED_area_tag_redraw(sa2);
1351         ED_area_tag_refresh(sa2);
1352 }
1353
1354 void ED_area_newspace(bContext *C, ScrArea *sa, int type)
1355 {
1356         if (sa->spacetype != type) {
1357                 SpaceType *st;
1358                 SpaceLink *slold;
1359                 SpaceLink *sl;
1360
1361                 ED_area_exit(C, sa);
1362
1363                 st = BKE_spacetype_from_id(type);
1364                 slold = sa->spacedata.first;
1365
1366                 sa->spacetype = type;
1367                 sa->butspacetype = type;
1368                 sa->type = st;
1369                 
1370                 /* check previously stored space */
1371                 for (sl = sa->spacedata.first; sl; sl = sl->next)
1372                         if (sl->spacetype == type)
1373                                 break;
1374                 
1375                 /* old spacedata... happened during work on 2.50, remove */
1376                 if (sl && sl->regionbase.first == NULL) {
1377                         st->free(sl);
1378                         BLI_freelinkN(&sa->spacedata, sl);
1379                         if (slold == sl) {
1380                                 slold = NULL;
1381                         }
1382                         sl = NULL;
1383                 }
1384                 
1385                 if (sl) {
1386                         
1387                         /* swap regions */
1388                         slold->regionbase = sa->regionbase;
1389                         sa->regionbase = sl->regionbase;
1390                         sl->regionbase.first = sl->regionbase.last = NULL;
1391                         
1392                         /* put in front of list */
1393                         BLI_remlink(&sa->spacedata, sl);
1394                         BLI_addhead(&sa->spacedata, sl);
1395                 }
1396                 else {
1397                         /* new space */
1398                         if (st) {
1399                                 sl = st->new(C);
1400                                 BLI_addhead(&sa->spacedata, sl);
1401                                 
1402                                 /* swap regions */
1403                                 if (slold)
1404                                         slold->regionbase = sa->regionbase;
1405                                 sa->regionbase = sl->regionbase;
1406                                 sl->regionbase.first = sl->regionbase.last = NULL;
1407                         }
1408                 }
1409                 
1410                 ED_area_initialize(CTX_wm_manager(C), CTX_wm_window(C), sa);
1411                 
1412                 /* tell WM to refresh, cursor types etc */
1413                 WM_event_add_mousemove(C);
1414                                 
1415                 /* send space change notifier */
1416                 WM_event_add_notifier(C, NC_SPACE | ND_SPACE_CHANGED, sa);
1417                 
1418                 ED_area_tag_refresh(sa);
1419         }
1420         
1421         /* also redraw when re-used */
1422         ED_area_tag_redraw(sa);
1423 }
1424
1425 void ED_area_prevspace(bContext *C, ScrArea *sa)
1426 {
1427         SpaceLink *sl = (sa) ? sa->spacedata.first : CTX_wm_space_data(C);
1428
1429         if (sl && sl->next) {
1430                 /* workaround for case of double prevspace, render window
1431                  * with a file browser on top of it */
1432                 if (sl->next->spacetype == SPACE_FILE && sl->next->next)
1433                         ED_area_newspace(C, sa, sl->next->next->spacetype);
1434                 else
1435                         ED_area_newspace(C, sa, sl->next->spacetype);
1436         }
1437         else {
1438                 /* no change */
1439                 return;
1440         }
1441         ED_area_tag_redraw(sa);
1442
1443         /* send space change notifier */
1444         WM_event_add_notifier(C, NC_SPACE | ND_SPACE_CHANGED, sa);
1445 }
1446
1447 static const char *editortype_pup(void)
1448 {
1449         const char *types = N_(
1450             "Editor type: %t"
1451             "|3D View %x1"
1452
1453             "|%l"
1454
1455             "|Timeline %x15"
1456             "|Graph Editor %x2"
1457             "|DopeSheet %x12"
1458             "|NLA Editor %x13"
1459
1460             "|%l"
1461
1462             "|UV/Image Editor %x6"
1463
1464             "|Video Sequence Editor %x8"
1465             "|Movie Clip Editor %x20"
1466             "|Text Editor %x9"
1467             "|Node Editor %x16"
1468             "|Logic Editor %x17"
1469
1470             "|%l"
1471
1472             "|Properties %x4"
1473             "|Outliner %x3"
1474             "|User Preferences %x19"
1475             "|Info %x7"
1476
1477             "|%l"
1478
1479             "|File Browser %x5"
1480
1481             "|%l"
1482
1483             "|Python Console %x18"
1484             );
1485
1486         return IFACE_(types);
1487 }
1488
1489 static void spacefunc(struct bContext *C, void *UNUSED(arg1), void *UNUSED(arg2))
1490 {
1491         ED_area_newspace(C, CTX_wm_area(C), CTX_wm_area(C)->butspacetype);
1492         ED_area_tag_redraw(CTX_wm_area(C));
1493
1494         /* send space change notifier */
1495         WM_event_add_notifier(C, NC_SPACE | ND_SPACE_CHANGED, CTX_wm_area(C));
1496 }
1497
1498 /* returns offset for next button in header */
1499 int ED_area_header_switchbutton(const bContext *C, uiBlock *block, int yco)
1500 {
1501         ScrArea *sa = CTX_wm_area(C);
1502         uiBut *but;
1503         int xco = 8;
1504         
1505         but = uiDefIconTextButC(block, ICONTEXTROW, 0, ICON_VIEW3D, 
1506                                 editortype_pup(), xco, yco, UI_UNIT_X + 10, UI_UNIT_Y,
1507                                 &(sa->butspacetype), 1.0, SPACEICONMAX, 0, 0,
1508                                 TIP_("Display current editor type (click for a menu of available types)"));
1509         uiButSetFunc(but, spacefunc, NULL, NULL);
1510         uiButClearFlag(but, UI_BUT_UNDO); /* skip undo on screen buttons */
1511         
1512         return xco + UI_UNIT_X + 14;
1513 }
1514
1515 int ED_area_header_standardbuttons(const bContext *C, uiBlock *block, int yco)
1516 {
1517         ScrArea *sa = CTX_wm_area(C);
1518         int xco = 8;
1519         uiBut *but;
1520         
1521         if (!sa->full)
1522                 xco = ED_area_header_switchbutton(C, block, yco);
1523
1524         uiBlockSetEmboss(block, UI_EMBOSSN);
1525
1526         if (sa->flag & HEADER_NO_PULLDOWN) {
1527                 but = uiDefIconButBitS(block, TOG, HEADER_NO_PULLDOWN, 0,
1528                                        ICON_DISCLOSURE_TRI_RIGHT,
1529                                        xco, yco, UI_UNIT_X, UI_UNIT_Y - 2,
1530                                        &(sa->flag), 0, 0, 0, 0,
1531                                        "Show pulldown menus");
1532         }
1533         else {
1534                 but = uiDefIconButBitS(block, TOG, HEADER_NO_PULLDOWN, 0,
1535                                        ICON_DISCLOSURE_TRI_DOWN,
1536                                        xco, yco, UI_UNIT_X, UI_UNIT_Y - 2,
1537                                        &(sa->flag), 0, 0, 0, 0,
1538                                        "Hide pulldown menus");
1539         }
1540
1541         uiButClearFlag(but, UI_BUT_UNDO); /* skip undo on screen buttons */
1542
1543         uiBlockSetEmboss(block, UI_EMBOSS);
1544         
1545         return xco + UI_UNIT_X;
1546 }
1547
1548 /************************ standard UI regions ************************/
1549
1550 void ED_region_panels(const bContext *C, ARegion *ar, int vertical, const char *context, int contextnr)
1551 {
1552         ScrArea *sa = CTX_wm_area(C);
1553         uiStyle *style = UI_GetStyleDraw();
1554         uiBlock *block;
1555         PanelType *pt;
1556         Panel *panel;
1557         View2D *v2d = &ar->v2d;
1558         View2DScrollers *scrollers;
1559         int x, y, xco, yco, w, em, triangle, open, newcontext = 0;
1560         
1561         if (contextnr >= 0)
1562                 newcontext = UI_view2d_tab_set(v2d, contextnr);
1563
1564         if (vertical) {
1565                 w = BLI_rctf_size_x(&v2d->cur);
1566                 em = (ar->type->prefsizex) ? UI_UNIT_Y / 2 : UI_UNIT_Y;
1567         }
1568         else {
1569                 w = UI_PANEL_WIDTH;
1570                 em = (ar->type->prefsizex) ? UI_UNIT_Y / 2 : UI_UNIT_Y;
1571         }
1572
1573         /* create panels */
1574         uiBeginPanels(C, ar);
1575
1576         /* set view2d view matrix for scrolling (without scrollers) */
1577         UI_view2d_view_ortho(v2d);
1578
1579         for (pt = ar->type->paneltypes.first; pt; pt = pt->next) {
1580                 /* verify context */
1581                 if (context)
1582                         if (pt->context[0] && strcmp(context, pt->context) != 0)
1583                                 continue;
1584
1585                 /* draw panel */
1586                 if (pt->draw && (!pt->poll || pt->poll(C, pt))) {
1587                         block = uiBeginBlock(C, ar, pt->idname, UI_EMBOSS);
1588                         panel = uiBeginPanel(sa, ar, block, pt, &open);
1589
1590                         /* bad fixed values */
1591                         triangle = (int)(UI_UNIT_Y * 1.1f);
1592
1593                         if (pt->draw_header && !(pt->flag & PNL_NO_HEADER) && (open || vertical)) {
1594                                 /* for enabled buttons */
1595                                 panel->layout = uiBlockLayout(block, UI_LAYOUT_HORIZONTAL, UI_LAYOUT_HEADER,
1596                                                               triangle, UI_UNIT_Y + style->panelspace + 2, UI_UNIT_Y, 1, style);
1597
1598                                 pt->draw_header(C, panel);
1599
1600                                 uiBlockLayoutResolve(block, &xco, &yco);
1601                                 panel->labelofs = xco - triangle;
1602                                 panel->layout = NULL;
1603                         }
1604                         else {
1605                                 panel->labelofs = 0;
1606                         }
1607
1608                         if (open) {
1609                                 short panelContext;
1610                                 
1611                                 /* panel context can either be toolbar region or normal panels region */
1612                                 if (ar->regiontype == RGN_TYPE_TOOLS)
1613                                         panelContext = UI_LAYOUT_TOOLBAR;
1614                                 else
1615                                         panelContext = UI_LAYOUT_PANEL;
1616                                 
1617                                 panel->layout = uiBlockLayout(block, UI_LAYOUT_VERTICAL, panelContext,
1618                                                               style->panelspace, 0, w - 2 * style->panelspace, em, style);
1619
1620                                 pt->draw(C, panel);
1621
1622                                 uiBlockLayoutResolve(block, &xco, &yco);
1623                                 panel->layout = NULL;
1624
1625                                 yco -= 2 * style->panelspace;
1626                                 uiEndPanel(block, w, -yco);
1627                         }
1628                         else {
1629                                 yco = 0;
1630                                 uiEndPanel(block, w, 0);
1631                         }
1632
1633                         uiEndBlock(C, block);
1634                 }
1635         }
1636
1637         /* align panels and return size */
1638         uiEndPanels(C, ar, &x, &y);
1639
1640         /* clear */
1641         if (ar->overlap) {
1642                 /* view should be in pixelspace */
1643                 UI_view2d_view_restore(C);
1644                 glEnable(GL_BLEND);
1645                 UI_ThemeColor4((ar->type->regionid == RGN_TYPE_PREVIEW) ? TH_PREVIEW_BACK : TH_BACK);
1646                 glRecti(0, 0, BLI_rcti_size_x(&ar->winrct), BLI_rcti_size_y(&ar->winrct));
1647                 glDisable(GL_BLEND);
1648         }
1649         else {
1650                 UI_ThemeClearColor((ar->type->regionid == RGN_TYPE_PREVIEW) ? TH_PREVIEW_BACK : TH_BACK);
1651                 glClear(GL_COLOR_BUFFER_BIT);
1652         }
1653         
1654         /* before setting the view */
1655         if (vertical) {
1656                 /* only allow scrolling in vertical direction */
1657                 v2d->keepofs |= V2D_LOCKOFS_X | V2D_KEEPOFS_Y;
1658                 v2d->keepofs &= ~(V2D_LOCKOFS_Y | V2D_KEEPOFS_X);
1659                 v2d->scroll |= V2D_SCROLL_HORIZONTAL_HIDE;
1660                 v2d->scroll &= ~V2D_SCROLL_VERTICAL_HIDE;
1661                 
1662                 /* ensure tot is set correctly, to keep views on bottons, with sliders */
1663                 y = min_ii(y, v2d->cur.ymin);
1664                 y = -y;
1665         }
1666         else {
1667                 /* for now, allow scrolling in both directions (since layouts are optimized for vertical,
1668                  * they often don't fit in horizontal layout)
1669                  */
1670                 v2d->keepofs &= ~(V2D_LOCKOFS_X | V2D_LOCKOFS_Y | V2D_KEEPOFS_X | V2D_KEEPOFS_Y);
1671                 //v2d->keepofs |= V2D_LOCKOFS_Y|V2D_KEEPOFS_X;
1672                 //v2d->keepofs &= ~(V2D_LOCKOFS_X|V2D_KEEPOFS_Y);
1673                 v2d->scroll |= V2D_SCROLL_VERTICAL_HIDE;
1674                 v2d->scroll &= ~V2D_SCROLL_HORIZONTAL_HIDE;
1675
1676                 /* don't jump back when panels close or hide */
1677                 if (!newcontext)
1678                         x = max_ii(x, v2d->cur.xmax);
1679                 y = -y;
1680         }
1681
1682         /* +V2D_SCROLL_HEIGHT is workaround to set the actual height */
1683         UI_view2d_totRect_set(v2d, x + V2D_SCROLL_WIDTH, y + V2D_SCROLL_HEIGHT);
1684
1685         /* set the view */
1686         UI_view2d_view_ortho(v2d);
1687
1688         /* draw panels */
1689         uiDrawPanels(C, ar);
1690
1691         /* restore view matrix */
1692         UI_view2d_view_restore(C);
1693         
1694         /* scrollers */
1695         scrollers = UI_view2d_scrollers_calc(C, v2d, V2D_ARG_DUMMY, V2D_ARG_DUMMY, V2D_ARG_DUMMY, V2D_ARG_DUMMY);
1696         UI_view2d_scrollers_draw(C, v2d, scrollers);
1697         UI_view2d_scrollers_free(scrollers);
1698 }
1699
1700 void ED_region_panels_init(wmWindowManager *wm, ARegion *ar)
1701 {
1702         wmKeyMap *keymap;
1703         
1704         /* XXX quick hacks for files saved with 2.5 already (i.e. the builtin defaults file)
1705          * scrollbars for button regions */
1706         ar->v2d.scroll |= (V2D_SCROLL_RIGHT | V2D_SCROLL_BOTTOM);
1707         ar->v2d.scroll |= V2D_SCROLL_HORIZONTAL_HIDE;
1708         ar->v2d.scroll &= ~V2D_SCROLL_VERTICAL_HIDE;
1709         ar->v2d.keepzoom |= V2D_KEEPZOOM;
1710
1711         /* correctly initialized User-Prefs? */
1712         if (!(ar->v2d.align & V2D_ALIGN_NO_POS_Y))
1713                 ar->v2d.flag &= ~V2D_IS_INITIALISED;
1714
1715         UI_view2d_region_reinit(&ar->v2d, V2D_COMMONVIEW_PANELS_UI, ar->winx, ar->winy);
1716
1717         keymap = WM_keymap_find(wm->defaultconf, "View2D Buttons List", 0, 0);
1718         WM_event_add_keymap_handler(&ar->handlers, keymap);
1719 }
1720
1721 void ED_region_header(const bContext *C, ARegion *ar)
1722 {
1723         uiStyle *style = UI_GetStyleDraw();
1724         uiBlock *block;
1725         uiLayout *layout;
1726         HeaderType *ht;
1727         Header header = {NULL};
1728         int maxco, xco, yco;
1729         int headery = ED_area_headersize();
1730
1731         /* clear */
1732         UI_ThemeClearColor((ED_screen_area_active(C)) ? TH_HEADER : TH_HEADERDESEL);
1733         glClear(GL_COLOR_BUFFER_BIT);
1734         
1735         /* set view2d view matrix for scrolling (without scrollers) */
1736         UI_view2d_view_ortho(&ar->v2d);
1737
1738         xco = maxco = 0.4f * UI_UNIT_X;
1739         yco = headery - floor(0.2f * UI_UNIT_Y);
1740
1741         /* draw all headers types */
1742         for (ht = ar->type->headertypes.first; ht; ht = ht->next) {
1743                 block = uiBeginBlock(C, ar, ht->idname, UI_EMBOSS);
1744                 layout = uiBlockLayout(block, UI_LAYOUT_HORIZONTAL, UI_LAYOUT_HEADER, xco, yco, UI_UNIT_Y, 1, style);
1745
1746                 if (ht->draw) {
1747                         header.type = ht;
1748                         header.layout = layout;
1749                         ht->draw(C, &header);
1750                         
1751                         /* for view2d */
1752                         xco = uiLayoutGetWidth(layout);
1753                         if (xco > maxco)
1754                                 maxco = xco;
1755                 }
1756
1757                 uiBlockLayoutResolve(block, &xco, &yco);
1758                 
1759                 /* for view2d */
1760                 if (xco > maxco)
1761                         maxco = xco;
1762                 
1763                 uiEndBlock(C, block);
1764                 uiDrawBlock(C, block);
1765         }
1766
1767         /* always as last  */
1768         UI_view2d_totRect_set(&ar->v2d, maxco + UI_UNIT_X + 80, headery);
1769
1770         /* restore view matrix? */
1771         UI_view2d_view_restore(C);
1772 }
1773
1774 void ED_region_header_init(ARegion *ar)
1775 {
1776         UI_view2d_region_reinit(&ar->v2d, V2D_COMMONVIEW_HEADER, ar->winx, ar->winy);
1777 }
1778
1779 /* UI_UNIT_Y is defined as U variable now, depending dpi */
1780 int ED_area_headersize(void)
1781 {
1782         return (int)(1.3f * UI_UNIT_Y);
1783 }
1784
1785 void ED_region_info_draw(ARegion *ar, const char *text, int block, float alpha)
1786 {
1787         const int header_height = UI_UNIT_Y;
1788         uiStyle *style = UI_GetStyleDraw();
1789         int fontid = style->widget.uifont_id;
1790         rcti rect;
1791
1792         /* background box */
1793         rect = ar->winrct;
1794         rect.xmin = 0;
1795         rect.ymin = BLI_rcti_size_y(&ar->winrct) - header_height;
1796
1797         if (block) {
1798                 rect.xmax = BLI_rcti_size_x(&ar->winrct);
1799         }
1800         else {
1801                 rect.xmax = rect.xmin + BLF_width(fontid, text) + 24;
1802         }
1803
1804         rect.ymax = BLI_rcti_size_y(&ar->winrct);
1805
1806         glEnable(GL_BLEND);
1807         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1808         glColor4f(0.0f, 0.0f, 0.0f, alpha);
1809         glRecti(rect.xmin, rect.ymin, rect.xmax + 1, rect.ymax + 1);
1810         glDisable(GL_BLEND);
1811
1812         /* text */
1813         UI_ThemeColor(TH_TEXT_HI);
1814         BLF_position(fontid, 12, rect.ymin + 5, 0.0f);
1815         BLF_draw(fontid, text, BLF_DRAW_STR_DUMMY_MAX);
1816 }
1817
1818 void ED_region_grid_draw(ARegion *ar, float zoomx, float zoomy)
1819 {
1820         float gridsize, gridstep = 1.0f / 32.0f;
1821         float fac, blendfac;
1822         int x1, y1, x2, y2;
1823
1824         /* the image is located inside (0, 0), (1, 1) as set by view2d */
1825         UI_ThemeColorShade(TH_BACK, 20);
1826
1827         UI_view2d_to_region_no_clip(&ar->v2d, 0.0f, 0.0f, &x1, &y1);
1828         UI_view2d_to_region_no_clip(&ar->v2d, 1.0f, 1.0f, &x2, &y2);
1829         glRectf(x1, y1, x2, y2);
1830
1831         /* gridsize adapted to zoom level */
1832         gridsize = 0.5f * (zoomx + zoomy);
1833         if (gridsize <= 0.0f)
1834                 return;
1835
1836         if (gridsize < 1.0f) {
1837                 while (gridsize < 1.0f) {
1838                         gridsize *= 4.0f;
1839                         gridstep *= 4.0f;
1840                 }
1841         }
1842         else {
1843                 while (gridsize >= 4.0f) {
1844                         gridsize /= 4.0f;
1845                         gridstep /= 4.0f;
1846                 }
1847         }
1848
1849         /* the fine resolution level */
1850         blendfac = 0.25f * gridsize - floorf(0.25f * gridsize);
1851         CLAMP(blendfac, 0.0f, 1.0f);
1852         UI_ThemeColorShade(TH_BACK, (int)(20.0f * (1.0f - blendfac)));
1853
1854         fac = 0.0f;
1855         glBegin(GL_LINES);
1856         while (fac < 1.0f) {
1857                 glVertex2f(x1, y1 * (1.0f - fac) + y2 * fac);
1858                 glVertex2f(x2, y1 * (1.0f - fac) + y2 * fac);
1859                 glVertex2f(x1 * (1.0f - fac) + x2 * fac, y1);
1860                 glVertex2f(x1 * (1.0f - fac) + x2 * fac, y2);
1861                 fac += gridstep;
1862         }
1863
1864         /* the large resolution level */
1865         UI_ThemeColor(TH_BACK);
1866
1867         fac = 0.0f;
1868         while (fac < 1.0f) {
1869                 glVertex2f(x1, y1 * (1.0f - fac) + y2 * fac);
1870                 glVertex2f(x2, y1 * (1.0f - fac) + y2 * fac);
1871                 glVertex2f(x1 * (1.0f - fac) + x2 * fac, y1);
1872                 glVertex2f(x1 * (1.0f - fac) + x2 * fac, y2);
1873                 fac += 4.0f * gridstep;
1874         }
1875         glEnd();
1876 }