2.5: Image Editor
[blender-staging.git] / source / blender / editors / space_image / space_image.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  * Contributor(s): Blender Foundation
25  *
26  * ***** END GPL LICENSE BLOCK *****
27  */
28
29 #include <string.h>
30 #include <stdio.h>
31
32 #include "DNA_image_types.h"
33 #include "DNA_mesh_types.h"
34 #include "DNA_meshdata_types.h"
35 #include "DNA_object_types.h"
36 #include "DNA_space_types.h"
37 #include "DNA_scene_types.h"
38 #include "DNA_screen_types.h"
39
40 #include "MEM_guardedalloc.h"
41
42 #include "BLI_blenlib.h"
43 #include "BLI_arithb.h"
44 #include "BLI_editVert.h"
45 #include "BLI_rand.h"
46
47 #include "BKE_colortools.h"
48 #include "BKE_context.h"
49 #include "BKE_image.h"
50 #include "BKE_mesh.h"
51 #include "BKE_screen.h"
52 #include "BKE_utildefines.h"
53
54 #include "IMB_imbuf.h"
55 #include "IMB_imbuf_types.h"
56
57 #include "ED_image.h"
58 #include "ED_mesh.h"
59 #include "ED_space_api.h"
60 #include "ED_screen.h"
61 #include "ED_uvedit.h"
62
63 #include "BIF_gl.h"
64 #include "BIF_glutil.h"
65
66 #include "RNA_access.h"
67
68 #include "WM_api.h"
69 #include "WM_types.h"
70
71 #include "UI_interface.h"
72 #include "UI_resources.h"
73 #include "UI_view2d.h"
74
75 #include "image_intern.h"
76
77 /* ******************** manage regions ********************* */
78
79 ARegion *image_has_buttons_region(ScrArea *sa)
80 {
81         ARegion *ar, *arnew;
82         
83         for(ar= sa->regionbase.first; ar; ar= ar->next)
84                 if(ar->regiontype==RGN_TYPE_UI)
85                         return ar;
86         
87         /* add subdiv level; after header */
88         for(ar= sa->regionbase.first; ar; ar= ar->next)
89                 if(ar->regiontype==RGN_TYPE_HEADER)
90                         break;
91         
92         /* is error! */
93         if(ar==NULL) return NULL;
94         
95         arnew= MEM_callocN(sizeof(ARegion), "buttons for image");
96         
97         BLI_insertlinkafter(&sa->regionbase, ar, arnew);
98         arnew->regiontype= RGN_TYPE_UI;
99         arnew->alignment= RGN_ALIGN_LEFT;
100         
101         arnew->flag = RGN_FLAG_HIDDEN;
102         
103         return arnew;
104 }
105
106 /* ******************** default callbacks for image space ***************** */
107
108 static SpaceLink *image_new(const bContext *C)
109 {
110         ARegion *ar;
111         SpaceImage *simage;
112         
113         simage= MEM_callocN(sizeof(SpaceImage), "initimage");
114         simage->spacetype= SPACE_IMAGE;
115         simage->zoom= 1;
116         
117         simage->iuser.ok= 1;
118         simage->iuser.fie_ima= 2;
119         simage->iuser.frames= 100;
120         
121         /* header */
122         ar= MEM_callocN(sizeof(ARegion), "header for image");
123         
124         BLI_addtail(&simage->regionbase, ar);
125         ar->regiontype= RGN_TYPE_HEADER;
126         ar->alignment= RGN_ALIGN_BOTTOM;
127         
128         /* buttons/list view */
129         ar= MEM_callocN(sizeof(ARegion), "buttons for image");
130         
131         BLI_addtail(&simage->regionbase, ar);
132         ar->regiontype= RGN_TYPE_UI;
133         ar->alignment= RGN_ALIGN_LEFT;
134         ar->flag = RGN_FLAG_HIDDEN;
135         
136         /* main area */
137         ar= MEM_callocN(sizeof(ARegion), "main area for image");
138         
139         BLI_addtail(&simage->regionbase, ar);
140         ar->regiontype= RGN_TYPE_WINDOW;
141         
142         return (SpaceLink *)simage;
143 }
144
145 /* not spacelink itself */
146 static void image_free(SpaceLink *sl)
147 {       
148         SpaceImage *simage= (SpaceImage*) sl;
149         
150         if(simage->cumap)
151                 curvemapping_free(simage->cumap);
152 //      if(simage->gpd)
153 // XXX          free_gpencil_data(simage->gpd);
154         
155 }
156
157
158 /* spacetype; init callback */
159 static void image_init(struct wmWindowManager *wm, ScrArea *sa)
160 {
161
162 }
163
164 static SpaceLink *image_duplicate(SpaceLink *sl)
165 {
166         SpaceImage *simagen= MEM_dupallocN(sl);
167         
168         /* clear or remove stuff from old */
169         if(simagen->cumap)
170                 simagen->cumap= curvemapping_copy(simagen->cumap);
171         
172         return (SpaceLink *)simagen;
173 }
174
175 void image_operatortypes(void)
176 {
177         WM_operatortype_append(IMAGE_OT_view_all);
178         WM_operatortype_append(IMAGE_OT_view_pan);
179         WM_operatortype_append(IMAGE_OT_view_selected);
180         WM_operatortype_append(IMAGE_OT_view_zoom);
181         WM_operatortype_append(IMAGE_OT_view_zoom_in);
182         WM_operatortype_append(IMAGE_OT_view_zoom_out);
183         WM_operatortype_append(IMAGE_OT_view_zoom_ratio);
184
185         WM_operatortype_append(IMAGE_OT_new);
186         WM_operatortype_append(IMAGE_OT_open);
187         WM_operatortype_append(IMAGE_OT_replace);
188         WM_operatortype_append(IMAGE_OT_reload);
189         WM_operatortype_append(IMAGE_OT_save);
190         WM_operatortype_append(IMAGE_OT_save_as);
191         WM_operatortype_append(IMAGE_OT_save_sequence);
192         WM_operatortype_append(IMAGE_OT_pack);
193         WM_operatortype_append(IMAGE_OT_unpack);
194
195         WM_operatortype_append(IMAGE_OT_sample);
196         WM_operatortype_append(IMAGE_OT_curves_point_set);
197
198         WM_operatortype_append(IMAGE_OT_record_composite);
199
200         WM_operatortype_append(IMAGE_OT_toolbox);
201         WM_operatortype_append(IMAGE_OT_properties);
202 }
203
204 void image_keymap(struct wmWindowManager *wm)
205 {
206         ListBase *keymap= WM_keymap_listbase(wm, "Image Generic", SPACE_IMAGE, 0);
207         
208         WM_keymap_add_item(keymap, "IMAGE_OT_new", NKEY, KM_PRESS, KM_ALT, 0);
209         WM_keymap_add_item(keymap, "IMAGE_OT_open", OKEY, KM_PRESS, KM_ALT, 0);
210         WM_keymap_add_item(keymap, "IMAGE_OT_reload", RKEY, KM_PRESS, KM_ALT, 0);
211         WM_keymap_add_item(keymap, "IMAGE_OT_save", SKEY, KM_PRESS, KM_ALT, 0);
212         WM_keymap_add_item(keymap, "IMAGE_OT_properties", NKEY, KM_PRESS, 0, 0);
213         
214         keymap= WM_keymap_listbase(wm, "Image", SPACE_IMAGE, 0);
215         
216         WM_keymap_add_item(keymap, "IMAGE_OT_view_all", HOMEKEY, KM_PRESS, 0, 0);
217         WM_keymap_add_item(keymap, "IMAGE_OT_view_selected", PADPERIOD, KM_PRESS, 0, 0);
218         WM_keymap_add_item(keymap, "IMAGE_OT_view_pan", MIDDLEMOUSE, KM_PRESS, 0, 0);
219
220         WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_in", WHEELINMOUSE, KM_PRESS, 0, 0);
221         WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_out", WHEELOUTMOUSE, KM_PRESS, 0, 0);
222         WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_in", PADPLUSKEY, KM_PRESS, 0, 0);
223         WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_out", PADMINUS, KM_PRESS, 0, 0);
224         WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom", MIDDLEMOUSE, KM_PRESS, KM_CTRL, 0);
225
226         RNA_float_set(WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_ratio", PAD8, KM_PRESS, KM_SHIFT, 0)->ptr, "ratio", 8.0f);
227         RNA_float_set(WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_ratio", PAD4, KM_PRESS, KM_SHIFT, 0)->ptr, "ratio", 4.0f);
228         RNA_float_set(WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_ratio", PAD2, KM_PRESS, KM_SHIFT, 0)->ptr, "ratio", 2.0f);
229         RNA_float_set(WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_ratio", PAD1, KM_PRESS, 0, 0)->ptr, "ratio", 1.0f);
230         RNA_float_set(WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_ratio", PAD2, KM_PRESS, 0, 0)->ptr, "ratio", 0.5f);
231         RNA_float_set(WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_ratio", PAD4, KM_PRESS, 0, 0)->ptr, "ratio", 0.25f);
232         RNA_float_set(WM_keymap_add_item(keymap, "IMAGE_OT_view_zoom_ratio", PAD8, KM_PRESS, 0, 0)->ptr, "ratio", 0.125f);
233
234         WM_keymap_add_item(keymap, "PAINT_OT_image_paint", ACTIONMOUSE, KM_PRESS, 0, 0);
235         WM_keymap_add_item(keymap, "PAINT_OT_grab_clone", SELECTMOUSE, KM_PRESS, 0, 0);
236         WM_keymap_add_item(keymap, "PAINT_OT_sample_color", SELECTMOUSE, KM_PRESS, 0, 0);
237         RNA_enum_set(WM_keymap_add_item(keymap, "PAINT_OT_image_paint_radial_control", FKEY, KM_PRESS, 0, 0)->ptr, "mode", WM_RADIALCONTROL_SIZE);
238         RNA_enum_set(WM_keymap_add_item(keymap, "PAINT_OT_image_paint_radial_control", FKEY, KM_PRESS, KM_SHIFT, 0)->ptr, "mode", WM_RADIALCONTROL_STRENGTH);
239
240         WM_keymap_add_item(keymap, "IMAGE_OT_sample", ACTIONMOUSE, KM_PRESS, 0, 0);
241         RNA_enum_set(WM_keymap_add_item(keymap, "IMAGE_OT_curves_point_set", ACTIONMOUSE, KM_PRESS, KM_CTRL, 0)->ptr, "point", 0);
242         RNA_enum_set(WM_keymap_add_item(keymap, "IMAGE_OT_curves_point_set", ACTIONMOUSE, KM_PRESS, KM_SHIFT, 0)->ptr, "point", 1);
243
244         WM_keymap_add_item(keymap, "IMAGE_OT_toolbox", SPACEKEY, KM_PRESS, 0, 0);
245 }
246
247 static void image_refresh(const bContext *C, ScrArea *sa)
248 {
249         SpaceImage *sima= (SpaceImage*)CTX_wm_space_data(C);
250         Object *obedit= CTX_data_edit_object(C);
251         Image *ima;
252
253         ima= ED_space_image(sima);
254
255         /* check if we have to set the image from the editmesh */
256         if(ima && (ima->source==IMA_SRC_VIEWER || sima->pin));
257         else if(obedit && obedit->type == OB_MESH) {
258                 Mesh *me= (Mesh*)obedit->data;
259                 EditMesh *em= BKE_mesh_get_editmesh(me);
260                 MTFace *tf;
261                 
262                 if(em && EM_texFaceCheck(em)) {
263                         sima->image= ima= NULL;
264                         
265                         tf = EM_get_active_mtface(em, NULL, NULL, 1); /* partially selected face is ok */
266                         
267                         if(tf && (tf->mode & TF_TEX)) {
268                                 /* don't need to check for pin here, see above */
269                                 sima->image= ima= tf->tpage;
270                                 
271                                 if(sima->flag & SI_EDITTILE);
272                                 else sima->curtile= tf->tile;
273                         }
274                 }
275
276                 BKE_mesh_end_editmesh(obedit->data, em);
277         }
278 }
279
280 static void image_listener(ScrArea *sa, wmNotifier *wmn)
281 {
282         /* context changes */
283         switch(wmn->category) {
284                 case NC_SCENE:
285                         switch(wmn->data) {
286                                 case ND_MODE:
287                                 case ND_RENDER_RESULT:
288                                 case ND_COMPO_RESULT:
289                                         ED_area_tag_refresh(sa);
290                                         ED_area_tag_redraw(sa);
291                                         break;
292                         }
293                         break;
294                 case NC_IMAGE:  
295                         ED_area_tag_redraw(sa);
296                         break;
297         }
298 }
299
300 static int image_context(const bContext *C, const char *member, bContextDataResult *result)
301 {
302         SpaceImage *sima= (SpaceImage*)CTX_wm_space_data(C);
303
304         if(CTX_data_dir(member)) {
305                 static const char *dir[] = {"edit_image", NULL};
306                 CTX_data_dir_set(result, dir);
307         }
308         else if(CTX_data_equals(member, "edit_image")) {
309                 CTX_data_id_pointer_set(result, (ID*)ED_space_image(sima));
310                 return 1;
311         }
312
313         return 0;
314 }
315
316 /************************** main region ***************************/
317
318 /* sets up the fields of the View2D from zoom and offset */
319 static void image_main_area_set_view2d(SpaceImage *sima, ARegion *ar, Scene *scene)
320 {
321         Image *ima= ED_space_image(sima);
322         float x1, y1, w, h;
323         int width, height, winx, winy;
324         
325 #if 0
326         if(image_preview_active(curarea, &width, &height));
327 #endif
328         if(sima->image) {
329                 ImBuf *ibuf= ED_space_image_buffer(sima);
330                 
331                 if(ibuf) {
332                         width= ibuf->x;
333                         height= ibuf->y;
334                 }
335                 else if(sima->image->type==IMA_TYPE_R_RESULT) {
336                         /* not very important, just nice */
337                         width= (scene->r.xsch*scene->r.size)/100;
338                         height= (scene->r.ysch*scene->r.size)/100;
339                 }
340                 else
341                         ED_space_image_size(sima, &width, &height);
342         }
343         else
344                 ED_space_image_size(sima, &width, &height);
345
346         w= width;
347         h= height;
348         
349         if(ima)
350                 h *= ima->aspy/ima->aspx;
351
352         winx= ar->winrct.xmax - ar->winrct.xmin + 1;
353         winy= ar->winrct.ymax - ar->winrct.ymin + 1;
354                 
355         ar->v2d.tot.xmin= 0;
356         ar->v2d.tot.ymin= 0;
357         ar->v2d.tot.xmax= w;
358         ar->v2d.tot.ymax= h;
359         
360         ar->v2d.mask.xmin= ar->v2d.mask.ymin= 0;
361         ar->v2d.mask.xmax= winx;
362         ar->v2d.mask.ymax= winy;
363
364         /* which part of the image space do we see? */
365         /* same calculation as in lrectwrite: area left and down*/
366         x1= ar->winrct.xmin+(winx-sima->zoom*w)/2;
367         y1= ar->winrct.ymin+(winy-sima->zoom*h)/2;
368
369         x1-= sima->zoom*sima->xof;
370         y1-= sima->zoom*sima->yof;
371         
372         /* relative display right */
373         ar->v2d.cur.xmin= ((ar->winrct.xmin - (float)x1)/sima->zoom);
374         ar->v2d.cur.xmax= ar->v2d.cur.xmin + ((float)winx/sima->zoom);
375         
376         /* relative display left */
377         ar->v2d.cur.ymin= ((ar->winrct.ymin-(float)y1)/sima->zoom);
378         ar->v2d.cur.ymax= ar->v2d.cur.ymin + ((float)winy/sima->zoom);
379         
380         /* normalize 0.0..1.0 */
381         ar->v2d.cur.xmin /= w;
382         ar->v2d.cur.xmax /= w;
383         ar->v2d.cur.ymin /= h;
384         ar->v2d.cur.ymax /= h;
385 }
386
387 /* add handlers, stuff you only do once or on area/region changes */
388 static void image_main_area_init(wmWindowManager *wm, ARegion *ar)
389 {
390         ListBase *keymap;
391         
392         // image space manages own v2d
393         // UI_view2d_region_reinit(&ar->v2d, V2D_COMMONVIEW_STANDARD, ar->winx, ar->winy);
394
395         /* image paint polls for mode */
396         keymap= WM_keymap_listbase(wm, "ImagePaint", SPACE_IMAGE, 0);
397         WM_event_add_keymap_handler_bb(&ar->handlers, keymap, &ar->v2d.mask, &ar->winrct);
398         
399         /* own keymaps */
400         keymap= WM_keymap_listbase(wm, "Image Generic", SPACE_IMAGE, 0);
401         WM_event_add_keymap_handler(&ar->handlers, keymap);
402         keymap= WM_keymap_listbase(wm, "Image", SPACE_IMAGE, 0);
403         WM_event_add_keymap_handler_bb(&ar->handlers, keymap, &ar->v2d.mask, &ar->winrct);
404 }
405
406 static void image_main_area_draw(const bContext *C, ARegion *ar)
407 {
408         /* draw entirely, view changes should be handled here */
409         SpaceImage *sima= (SpaceImage*)CTX_wm_space_data(C);
410         Object *obedit= CTX_data_edit_object(C);
411         Scene *scene= CTX_data_scene(C);
412         View2D *v2d= &ar->v2d;
413         //View2DScrollers *scrollers;
414         float col[3];
415         
416         /* clear and setup matrix */
417         UI_GetThemeColor3fv(TH_BACK, col);
418         glClearColor(col[0], col[1], col[2], 0.0);
419         glClear(GL_COLOR_BUFFER_BIT);
420         
421         /* we set view2d from own zoom and offset each time */
422         image_main_area_set_view2d(sima, ar, scene);
423                 
424         /* we draw image in pixelspace */
425         draw_image_main(sima, ar, scene);
426
427         /* and uvs in 0.0-1.0 space */
428         UI_view2d_view_ortho(C, v2d);
429         draw_uvedit_main(sima, ar, scene, obedit);
430         ED_region_draw_cb_draw(C, ar, REGION_DRAW_POST);
431         UI_view2d_view_restore(C);
432         
433         /* scrollers? */
434         /*scrollers= UI_view2d_scrollers_calc(C, v2d, V2D_UNIT_VALUES, V2D_GRID_CLAMP, V2D_ARG_DUMMY, V2D_ARG_DUMMY);
435         UI_view2d_scrollers_draw(C, v2d, scrollers);
436         UI_view2d_scrollers_free(scrollers);*/
437 }
438
439 static void image_modal_keymaps(wmWindowManager *wm, ARegion *ar, int stype)
440 {
441         ListBase *keymap;
442         
443         keymap= WM_keymap_listbase(wm, "UVEdit", 0, 0);
444
445         if(stype==NS_EDITMODE_MESH)
446                 WM_event_add_keymap_handler(&ar->handlers, keymap);
447         else
448                 WM_event_remove_keymap_handler(&ar->handlers, keymap);
449 }
450
451 static void image_main_area_listener(ARegion *ar, wmNotifier *wmn)
452 {
453         /* context changes */
454         switch(wmn->category) {
455                 case NC_SCENE:
456                         switch(wmn->data) {
457                                 case ND_MODE:
458                                         image_modal_keymaps(wmn->wm, ar, wmn->subtype);
459                                         break;
460                         }
461                         break;
462                 case NC_OBJECT:
463                         switch(wmn->data) {
464                                 case ND_GEOM_SELECT:
465                                 case ND_GEOM_DATA:
466                                         ED_region_tag_redraw(ar);
467                                         break;
468                         }
469         }
470 }
471
472 /* *********************** buttons region ************************ */
473
474 /* add handlers, stuff you only do once or on area/region changes */
475 static void image_buttons_area_init(wmWindowManager *wm, ARegion *ar)
476 {
477         ListBase *keymap;
478
479         ED_region_panels_init(wm, ar);
480         
481         keymap= WM_keymap_listbase(wm, "Image Generic", SPACE_IMAGE, 0);
482         WM_event_add_keymap_handler(&ar->handlers, keymap);
483 }
484
485 static void image_buttons_area_draw(const bContext *C, ARegion *ar)
486 {
487         ED_region_panels(C, ar, 1, NULL);
488 }
489
490 static void image_buttons_area_listener(ARegion *ar, wmNotifier *wmn)
491 {
492         /* context changes */
493         switch(wmn->category) {
494                 
495         }
496 }
497
498 /************************* header region **************************/
499
500 /* add handlers, stuff you only do once or on area/region changes */
501 static void image_header_area_init(wmWindowManager *wm, ARegion *ar)
502 {
503 #if 0
504         UI_view2d_region_reinit(&ar->v2d, V2D_COMMONVIEW_HEADER, ar->winx, ar->winy);
505 #else
506         ED_region_header_init(ar);
507 #endif
508 }
509
510 static void image_header_area_draw(const bContext *C, ARegion *ar)
511 {
512         ED_region_header(C, ar);
513 #if 0
514         float col[3];
515         
516         /* clear */
517         if(ED_screen_area_active(C))
518                 UI_GetThemeColor3fv(TH_HEADER, col);
519         else
520                 UI_GetThemeColor3fv(TH_HEADERDESEL, col);
521         
522         glClearColor(col[0], col[1], col[2], 0.0);
523         glClear(GL_COLOR_BUFFER_BIT);
524         
525         /* set view2d view matrix for scrolling (without scrollers) */
526         UI_view2d_view_ortho(C, &ar->v2d);
527         
528         image_header_buttons(C, ar);
529         
530         /* restore view matrix? */
531         UI_view2d_view_restore(C);
532 #endif
533 }
534
535 /**************************** spacetype *****************************/
536
537 /* only called once, from space/spacetypes.c */
538 void ED_spacetype_image(void)
539 {
540         SpaceType *st= MEM_callocN(sizeof(SpaceType), "spacetype image");
541         ARegionType *art;
542         
543         st->spaceid= SPACE_IMAGE;
544         
545         st->new= image_new;
546         st->free= image_free;
547         st->init= image_init;
548         st->duplicate= image_duplicate;
549         st->operatortypes= image_operatortypes;
550         st->keymap= image_keymap;
551         st->refresh= image_refresh;
552         st->listener= image_listener;
553         st->context= image_context;
554         
555         /* regions: main window */
556         art= MEM_callocN(sizeof(ARegionType), "spacetype image region");
557         art->regionid = RGN_TYPE_WINDOW;
558         art->keymapflag= ED_KEYMAP_FRAMES;
559         art->init= image_main_area_init;
560         art->draw= image_main_area_draw;
561         art->listener= image_main_area_listener;
562         art->keymapflag= 0;
563
564         BLI_addhead(&st->regiontypes, art);
565         
566         /* regions: listview/buttons */
567         art= MEM_callocN(sizeof(ARegionType), "spacetype image region");
568         art->regionid = RGN_TYPE_UI;
569         art->minsizex= 220; // XXX
570         art->keymapflag= ED_KEYMAP_UI|ED_KEYMAP_FRAMES;
571         art->listener= image_buttons_area_listener;
572         art->init= image_buttons_area_init;
573         art->draw= image_buttons_area_draw;
574         BLI_addhead(&st->regiontypes, art);
575
576         image_buttons_register(art);
577
578         /* regions: header */
579         art= MEM_callocN(sizeof(ARegionType), "spacetype image region");
580         art->regionid = RGN_TYPE_HEADER;
581         art->minsizey= HEADERY;
582         art->keymapflag= ED_KEYMAP_UI|ED_KEYMAP_VIEW2D|ED_KEYMAP_FRAMES;
583         art->init= image_header_area_init;
584         art->draw= image_header_area_draw;
585         
586         BLI_addhead(&st->regiontypes, art);
587         
588         
589         BKE_spacetype_register(st);
590 }
591
592 /**************************** common state *****************************/
593
594 /* note; image_panel_properties() uses pointer to sima->image directly */
595 Image *ED_space_image(SpaceImage *sima)
596 {
597         return sima->image;
598 }
599
600 /* called to assign images to UV faces */
601 void ED_space_image_set(bContext *C, SpaceImage *sima, Scene *scene, Object *obedit, Image *ima)
602 {
603         ED_uvedit_assign_image(scene, obedit, ima, sima->image);
604
605         /* change the space ima after because uvedit_face_visible uses the space ima
606          * to check if the face is displayed in UV-localview */
607         sima->image= ima;
608
609         if(ima == NULL || ima->type==IMA_TYPE_R_RESULT || ima->type==IMA_TYPE_COMPOSITE)
610                 sima->flag &= ~SI_DRAWTOOL;
611
612         if(sima->image)
613                 BKE_image_signal(sima->image, &sima->iuser, IMA_SIGNAL_USER_NEW_IMAGE);
614
615         if(sima->image && sima->image->id.us==0)
616                 sima->image->id.us= 1;
617
618         if(C) {
619                 if(obedit)
620                         WM_event_add_notifier(C, NC_OBJECT|ND_GEOM_DATA, obedit);
621
622                 ED_area_tag_redraw(CTX_wm_area(C));
623         }
624 }
625
626 ImBuf *ED_space_image_buffer(SpaceImage *sima)
627 {
628         ImBuf *ibuf;
629
630         if(sima->image) {
631 #if 0
632                 if(sima->image->type==IMA_TYPE_R_RESULT && BIF_show_render_spare())
633                         return BIF_render_spare_imbuf();
634                 else
635 #endif
636                         ibuf= BKE_image_get_ibuf(sima->image, &sima->iuser);
637
638                 if(ibuf && (ibuf->rect || ibuf->rect_float))
639                         return ibuf;
640         }
641
642         return NULL;
643 }
644
645 void ED_image_size(Image *ima, int *width, int *height)
646 {
647         ImBuf *ibuf;
648
649         ibuf= (ima)? BKE_image_get_ibuf(ima, NULL): NULL;
650
651         if(ibuf && ibuf->x > 0 && ibuf->y > 0) {
652                 *width= ibuf->x;
653                 *height= ibuf->y;
654         }
655         else {
656                 *width= 256;
657                 *height= 256;
658         }
659 }
660
661 void ED_space_image_size(SpaceImage *sima, int *width, int *height)
662 {
663         ImBuf *ibuf;
664
665         ibuf= ED_space_image_buffer(sima);
666
667         if(ibuf && ibuf->x > 0 && ibuf->y > 0) {
668                 *width= ibuf->x;
669                 *height= ibuf->y;
670         }
671         /* I know a bit weak... but preview uses not actual image size */
672         // XXX else if(image_preview_active(sima, width, height));
673         else {
674                 *width= 256;
675                 *height= 256;
676         }
677 }
678
679 void ED_image_aspect(Image *ima, float *aspx, float *aspy)
680 {
681         *aspx= *aspy= 1.0;
682
683         if((ima == NULL) || (ima->type == IMA_TYPE_R_RESULT) || (ima->type == IMA_TYPE_COMPOSITE) ||
684            (ima->aspx==0.0 || ima->aspy==0.0))
685                 return;
686
687         /* x is always 1 */
688         *aspy = ima->aspy/ima->aspx;
689 }
690
691 void ED_space_image_aspect(SpaceImage *sima, float *aspx, float *aspy)
692 {
693         ED_image_aspect(ED_space_image(sima), aspx, aspy);
694 }
695
696 void ED_space_image_zoom(SpaceImage *sima, ARegion *ar, float *zoomx, float *zoomy)
697 {
698         int width, height;
699
700         ED_space_image_size(sima, &width, &height);
701
702         *zoomx= (float)(ar->winrct.xmax - ar->winrct.xmin)/(float)((ar->v2d.cur.xmax - ar->v2d.cur.xmin)*width);
703         *zoomy= (float)(ar->winrct.ymax - ar->winrct.ymin)/(float)((ar->v2d.cur.ymax - ar->v2d.cur.ymin)*height);
704 }
705
706 void ED_space_image_uv_aspect(SpaceImage *sima, float *aspx, float *aspy)
707 {
708         int w, h;
709
710         ED_space_image_aspect(sima, aspx, aspy);
711         ED_space_image_size(sima, &w, &h);
712
713         *aspx *= (float)w/256.0f;
714         *aspy *= (float)h/256.0f;
715 }
716
717 void ED_image_uv_aspect(Image *ima, float *aspx, float *aspy)
718 {
719         int w, h;
720
721         ED_image_aspect(ima, aspx, aspy);
722         ED_image_size(ima, &w, &h);
723
724         *aspx *= (float)w;
725         *aspy *= (float)h;
726 }
727
728 int ED_space_image_show_render(SpaceImage *sima)
729 {
730         return (sima->image && ELEM(sima->image->type, IMA_TYPE_R_RESULT, IMA_TYPE_COMPOSITE));
731 }
732
733 int ED_space_image_show_paint(SpaceImage *sima)
734 {
735         if(ED_space_image_show_render(sima))
736                 return 0;
737
738         return (sima->flag & SI_DRAWTOOL);
739 }
740
741 int ED_space_image_show_uvedit(SpaceImage *sima, Object *obedit)
742 {
743         if(ED_space_image_show_render(sima))
744                 return 0;
745         if(ED_space_image_show_paint(sima))
746                 return 0;
747
748         if(obedit && obedit->type == OB_MESH) {
749                 EditMesh *em = BKE_mesh_get_editmesh(obedit->data);
750                 int ret;
751         
752                 ret = EM_texFaceCheck(em);
753
754                 BKE_mesh_end_editmesh(obedit->data, em);
755                 return ret;
756         }
757
758         return 0;
759 }
760
761 int ED_space_image_show_uvshadow(SpaceImage *sima, Object *obedit)
762 {
763         if(ED_space_image_show_render(sima))
764                 return 0;
765
766         if(ED_space_image_show_paint(sima))
767                 if(obedit && obedit->type == OB_MESH) {
768                         EditMesh *em = BKE_mesh_get_editmesh(obedit->data);
769                         int ret;
770
771                         ret = EM_texFaceCheck(em);
772
773                         BKE_mesh_end_editmesh(obedit->data, em);
774                         return ret;
775                 }
776
777         return 0;
778 }
779