2.5: Various Fixes
[blender.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                 case NC_OBJECT:
298                         switch(wmn->data) {
299                                 case ND_GEOM_SELECT:
300                                 case ND_GEOM_DATA:
301                                         ED_area_tag_redraw(sa);
302                                         break;
303                         }
304         }
305 }
306
307 static int image_context(const bContext *C, const char *member, bContextDataResult *result)
308 {
309         SpaceImage *sima= (SpaceImage*)CTX_wm_space_data(C);
310
311         if(CTX_data_dir(member)) {
312                 static const char *dir[] = {"edit_image", NULL};
313                 CTX_data_dir_set(result, dir);
314         }
315         else if(CTX_data_equals(member, "edit_image")) {
316                 CTX_data_id_pointer_set(result, (ID*)ED_space_image(sima));
317                 return 1;
318         }
319
320         return 0;
321 }
322
323 /************************** main region ***************************/
324
325 /* sets up the fields of the View2D from zoom and offset */
326 static void image_main_area_set_view2d(SpaceImage *sima, ARegion *ar, Scene *scene)
327 {
328         Image *ima= ED_space_image(sima);
329         float x1, y1, w, h;
330         int width, height, winx, winy;
331         
332 #if 0
333         if(image_preview_active(curarea, &width, &height));
334 #endif
335         if(sima->image) {
336                 ImBuf *ibuf= ED_space_image_buffer(sima);
337                 
338                 if(ibuf) {
339                         width= ibuf->x;
340                         height= ibuf->y;
341                 }
342                 else if(sima->image->type==IMA_TYPE_R_RESULT) {
343                         /* not very important, just nice */
344                         width= (scene->r.xsch*scene->r.size)/100;
345                         height= (scene->r.ysch*scene->r.size)/100;
346                 }
347                 else
348                         ED_space_image_size(sima, &width, &height);
349         }
350         else
351                 ED_space_image_size(sima, &width, &height);
352
353         w= width;
354         h= height;
355         
356         if(ima)
357                 h *= ima->aspy/ima->aspx;
358
359         winx= ar->winrct.xmax - ar->winrct.xmin + 1;
360         winy= ar->winrct.ymax - ar->winrct.ymin + 1;
361                 
362         ar->v2d.tot.xmin= 0;
363         ar->v2d.tot.ymin= 0;
364         ar->v2d.tot.xmax= w;
365         ar->v2d.tot.ymax= h;
366         
367         ar->v2d.mask.xmin= ar->v2d.mask.ymin= 0;
368         ar->v2d.mask.xmax= winx;
369         ar->v2d.mask.ymax= winy;
370
371         /* which part of the image space do we see? */
372         /* same calculation as in lrectwrite: area left and down*/
373         x1= ar->winrct.xmin+(winx-sima->zoom*w)/2;
374         y1= ar->winrct.ymin+(winy-sima->zoom*h)/2;
375
376         x1-= sima->zoom*sima->xof;
377         y1-= sima->zoom*sima->yof;
378         
379         /* relative display right */
380         ar->v2d.cur.xmin= ((ar->winrct.xmin - (float)x1)/sima->zoom);
381         ar->v2d.cur.xmax= ar->v2d.cur.xmin + ((float)winx/sima->zoom);
382         
383         /* relative display left */
384         ar->v2d.cur.ymin= ((ar->winrct.ymin-(float)y1)/sima->zoom);
385         ar->v2d.cur.ymax= ar->v2d.cur.ymin + ((float)winy/sima->zoom);
386         
387         /* normalize 0.0..1.0 */
388         ar->v2d.cur.xmin /= w;
389         ar->v2d.cur.xmax /= w;
390         ar->v2d.cur.ymin /= h;
391         ar->v2d.cur.ymax /= h;
392 }
393
394 /* add handlers, stuff you only do once or on area/region changes */
395 static void image_main_area_init(wmWindowManager *wm, ARegion *ar)
396 {
397         ListBase *keymap;
398         
399         // image space manages own v2d
400         // UI_view2d_region_reinit(&ar->v2d, V2D_COMMONVIEW_STANDARD, ar->winx, ar->winy);
401
402         /* image paint polls for mode */
403         keymap= WM_keymap_listbase(wm, "ImagePaint", SPACE_IMAGE, 0);
404         WM_event_add_keymap_handler_bb(&ar->handlers, keymap, &ar->v2d.mask, &ar->winrct);
405
406         /* XXX need context here?
407         keymap= WM_keymap_listbase(wm, "UVEdit", 0, 0);
408         WM_event_add_keymap_handler(&ar->handlers, keymap);*/
409         
410         /* own keymaps */
411         keymap= WM_keymap_listbase(wm, "Image Generic", SPACE_IMAGE, 0);
412         WM_event_add_keymap_handler(&ar->handlers, keymap);
413         keymap= WM_keymap_listbase(wm, "Image", SPACE_IMAGE, 0);
414         WM_event_add_keymap_handler_bb(&ar->handlers, keymap, &ar->v2d.mask, &ar->winrct);
415 }
416
417 static void image_main_area_draw(const bContext *C, ARegion *ar)
418 {
419         /* draw entirely, view changes should be handled here */
420         SpaceImage *sima= (SpaceImage*)CTX_wm_space_data(C);
421         Object *obedit= CTX_data_edit_object(C);
422         Scene *scene= CTX_data_scene(C);
423         View2D *v2d= &ar->v2d;
424         //View2DScrollers *scrollers;
425         float col[3];
426         
427         /* clear and setup matrix */
428         UI_GetThemeColor3fv(TH_BACK, col);
429         glClearColor(col[0], col[1], col[2], 0.0);
430         glClear(GL_COLOR_BUFFER_BIT);
431         
432         /* we set view2d from own zoom and offset each time */
433         image_main_area_set_view2d(sima, ar, scene);
434                 
435         /* we draw image in pixelspace */
436         draw_image_main(sima, ar, scene);
437
438         /* and uvs in 0.0-1.0 space */
439         UI_view2d_view_ortho(C, v2d);
440         draw_uvedit_main(sima, ar, scene, obedit);
441         ED_region_draw_cb_draw(C, ar, REGION_DRAW_POST);
442         UI_view2d_view_restore(C);
443         
444         /* scrollers? */
445         /*scrollers= UI_view2d_scrollers_calc(C, v2d, V2D_UNIT_VALUES, V2D_GRID_CLAMP, V2D_ARG_DUMMY, V2D_ARG_DUMMY);
446         UI_view2d_scrollers_draw(C, v2d, scrollers);
447         UI_view2d_scrollers_free(scrollers);*/
448 }
449
450 static void image_modal_keymaps(wmWindowManager *wm, ARegion *ar, int stype)
451 {
452         ListBase *keymap;
453         
454         keymap= WM_keymap_listbase(wm, "UVEdit", 0, 0);
455
456         if(stype==NS_EDITMODE_MESH)
457                 WM_event_add_keymap_handler(&ar->handlers, keymap);
458         else
459                 WM_event_remove_keymap_handler(&ar->handlers, keymap);
460 }
461
462 static void image_main_area_listener(ARegion *ar, wmNotifier *wmn)
463 {
464         /* context changes */
465         switch(wmn->category) {
466                 case NC_SCENE:
467                         switch(wmn->data) {
468                                 case ND_MODE:
469                                         image_modal_keymaps(wmn->wm, ar, wmn->subtype);
470                                         break;
471                         }
472                         break;
473         }
474 }
475
476 /* *********************** buttons region ************************ */
477
478 /* add handlers, stuff you only do once or on area/region changes */
479 static void image_buttons_area_init(wmWindowManager *wm, ARegion *ar)
480 {
481         ListBase *keymap;
482
483         ED_region_panels_init(wm, ar);
484         
485         keymap= WM_keymap_listbase(wm, "Image Generic", SPACE_IMAGE, 0);
486         WM_event_add_keymap_handler(&ar->handlers, keymap);
487 }
488
489 static void image_buttons_area_draw(const bContext *C, ARegion *ar)
490 {
491         ED_region_panels(C, ar, 1, NULL);
492 }
493
494 static void image_buttons_area_listener(ARegion *ar, wmNotifier *wmn)
495 {
496         /* context changes */
497         switch(wmn->category) {
498                 
499         }
500 }
501
502 /************************* header region **************************/
503
504 /* add handlers, stuff you only do once or on area/region changes */
505 static void image_header_area_init(wmWindowManager *wm, ARegion *ar)
506 {
507 #if 0
508         UI_view2d_region_reinit(&ar->v2d, V2D_COMMONVIEW_HEADER, ar->winx, ar->winy);
509 #else
510         ED_region_header_init(ar);
511 #endif
512 }
513
514 static void image_header_area_draw(const bContext *C, ARegion *ar)
515 {
516         ED_region_header(C, ar);
517 #if 0
518         float col[3];
519         
520         /* clear */
521         if(ED_screen_area_active(C))
522                 UI_GetThemeColor3fv(TH_HEADER, col);
523         else
524                 UI_GetThemeColor3fv(TH_HEADERDESEL, col);
525         
526         glClearColor(col[0], col[1], col[2], 0.0);
527         glClear(GL_COLOR_BUFFER_BIT);
528         
529         /* set view2d view matrix for scrolling (without scrollers) */
530         UI_view2d_view_ortho(C, &ar->v2d);
531         
532         image_header_buttons(C, ar);
533         
534         /* restore view matrix? */
535         UI_view2d_view_restore(C);
536 #endif
537 }
538
539 /**************************** spacetype *****************************/
540
541 /* only called once, from space/spacetypes.c */
542 void ED_spacetype_image(void)
543 {
544         SpaceType *st= MEM_callocN(sizeof(SpaceType), "spacetype image");
545         ARegionType *art;
546         
547         st->spaceid= SPACE_IMAGE;
548         
549         st->new= image_new;
550         st->free= image_free;
551         st->init= image_init;
552         st->duplicate= image_duplicate;
553         st->operatortypes= image_operatortypes;
554         st->keymap= image_keymap;
555         st->refresh= image_refresh;
556         st->listener= image_listener;
557         st->context= image_context;
558         
559         /* regions: main window */
560         art= MEM_callocN(sizeof(ARegionType), "spacetype image region");
561         art->regionid = RGN_TYPE_WINDOW;
562         art->keymapflag= ED_KEYMAP_FRAMES;
563         art->init= image_main_area_init;
564         art->draw= image_main_area_draw;
565         art->listener= image_main_area_listener;
566         art->keymapflag= 0;
567
568         BLI_addhead(&st->regiontypes, art);
569         
570         /* regions: listview/buttons */
571         art= MEM_callocN(sizeof(ARegionType), "spacetype image region");
572         art->regionid = RGN_TYPE_UI;
573         art->minsizex= 220; // XXX
574         art->keymapflag= ED_KEYMAP_UI|ED_KEYMAP_FRAMES;
575         art->listener= image_buttons_area_listener;
576         art->init= image_buttons_area_init;
577         art->draw= image_buttons_area_draw;
578         BLI_addhead(&st->regiontypes, art);
579
580         image_buttons_register(art);
581
582         /* regions: header */
583         art= MEM_callocN(sizeof(ARegionType), "spacetype image region");
584         art->regionid = RGN_TYPE_HEADER;
585         art->minsizey= HEADERY;
586         art->keymapflag= ED_KEYMAP_UI|ED_KEYMAP_VIEW2D|ED_KEYMAP_FRAMES;
587         art->init= image_header_area_init;
588         art->draw= image_header_area_draw;
589         
590         BLI_addhead(&st->regiontypes, art);
591         
592         
593         BKE_spacetype_register(st);
594 }
595
596 /**************************** common state *****************************/
597
598 /* note; image_panel_properties() uses pointer to sima->image directly */
599 Image *ED_space_image(SpaceImage *sima)
600 {
601         return sima->image;
602 }
603
604 /* called to assign images to UV faces */
605 void ED_space_image_set(bContext *C, SpaceImage *sima, Scene *scene, Object *obedit, Image *ima)
606 {
607         ED_uvedit_assign_image(scene, obedit, ima, sima->image);
608
609         /* change the space ima after because uvedit_face_visible uses the space ima
610          * to check if the face is displayed in UV-localview */
611         sima->image= ima;
612
613         if(ima == NULL || ima->type==IMA_TYPE_R_RESULT || ima->type==IMA_TYPE_COMPOSITE)
614                 sima->flag &= ~SI_DRAWTOOL;
615
616         if(sima->image)
617                 BKE_image_signal(sima->image, &sima->iuser, IMA_SIGNAL_USER_NEW_IMAGE);
618
619         if(sima->image && sima->image->id.us==0)
620                 sima->image->id.us= 1;
621
622         if(C) {
623                 if(obedit)
624                         WM_event_add_notifier(C, NC_OBJECT|ND_GEOM_DATA, obedit);
625
626                 ED_area_tag_redraw(CTX_wm_area(C));
627         }
628 }
629
630 ImBuf *ED_space_image_buffer(SpaceImage *sima)
631 {
632         ImBuf *ibuf;
633
634         if(sima->image) {
635 #if 0
636                 if(sima->image->type==IMA_TYPE_R_RESULT && BIF_show_render_spare())
637                         return BIF_render_spare_imbuf();
638                 else
639 #endif
640                         ibuf= BKE_image_get_ibuf(sima->image, &sima->iuser);
641
642                 if(ibuf && (ibuf->rect || ibuf->rect_float))
643                         return ibuf;
644         }
645
646         return NULL;
647 }
648
649 void ED_image_size(Image *ima, int *width, int *height)
650 {
651         ImBuf *ibuf;
652
653         ibuf= (ima)? BKE_image_get_ibuf(ima, NULL): NULL;
654
655         if(ibuf && ibuf->x > 0 && ibuf->y > 0) {
656                 *width= ibuf->x;
657                 *height= ibuf->y;
658         }
659         else {
660                 *width= 256;
661                 *height= 256;
662         }
663 }
664
665 void ED_space_image_size(SpaceImage *sima, int *width, int *height)
666 {
667         ImBuf *ibuf;
668
669         ibuf= ED_space_image_buffer(sima);
670
671         if(ibuf && ibuf->x > 0 && ibuf->y > 0) {
672                 *width= ibuf->x;
673                 *height= ibuf->y;
674         }
675         /* I know a bit weak... but preview uses not actual image size */
676         // XXX else if(image_preview_active(sima, width, height));
677         else {
678                 *width= 256;
679                 *height= 256;
680         }
681 }
682
683 void ED_image_aspect(Image *ima, float *aspx, float *aspy)
684 {
685         *aspx= *aspy= 1.0;
686
687         if((ima == NULL) || (ima->type == IMA_TYPE_R_RESULT) || (ima->type == IMA_TYPE_COMPOSITE) ||
688            (ima->aspx==0.0 || ima->aspy==0.0))
689                 return;
690
691         /* x is always 1 */
692         *aspy = ima->aspy/ima->aspx;
693 }
694
695 void ED_space_image_aspect(SpaceImage *sima, float *aspx, float *aspy)
696 {
697         ED_image_aspect(ED_space_image(sima), aspx, aspy);
698 }
699
700 void ED_space_image_zoom(SpaceImage *sima, ARegion *ar, float *zoomx, float *zoomy)
701 {
702         int width, height;
703
704         ED_space_image_size(sima, &width, &height);
705
706         *zoomx= (float)(ar->winrct.xmax - ar->winrct.xmin)/(float)((ar->v2d.cur.xmax - ar->v2d.cur.xmin)*width);
707         *zoomy= (float)(ar->winrct.ymax - ar->winrct.ymin)/(float)((ar->v2d.cur.ymax - ar->v2d.cur.ymin)*height);
708 }
709
710 void ED_space_image_uv_aspect(SpaceImage *sima, float *aspx, float *aspy)
711 {
712         int w, h;
713
714         ED_space_image_aspect(sima, aspx, aspy);
715         ED_space_image_size(sima, &w, &h);
716
717         *aspx *= (float)w/256.0f;
718         *aspy *= (float)h/256.0f;
719 }
720
721 void ED_image_uv_aspect(Image *ima, float *aspx, float *aspy)
722 {
723         int w, h;
724
725         ED_image_aspect(ima, aspx, aspy);
726         ED_image_size(ima, &w, &h);
727
728         *aspx *= (float)w;
729         *aspy *= (float)h;
730 }
731
732 int ED_space_image_show_render(SpaceImage *sima)
733 {
734         return (sima->image && ELEM(sima->image->type, IMA_TYPE_R_RESULT, IMA_TYPE_COMPOSITE));
735 }
736
737 int ED_space_image_show_paint(SpaceImage *sima)
738 {
739         if(ED_space_image_show_render(sima))
740                 return 0;
741
742         return (sima->flag & SI_DRAWTOOL);
743 }
744
745 int ED_space_image_show_uvedit(SpaceImage *sima, Object *obedit)
746 {
747         if(ED_space_image_show_render(sima))
748                 return 0;
749         if(ED_space_image_show_paint(sima))
750                 return 0;
751
752         if(obedit && obedit->type == OB_MESH) {
753                 EditMesh *em = BKE_mesh_get_editmesh(obedit->data);
754                 int ret;
755         
756                 ret = EM_texFaceCheck(em);
757
758                 BKE_mesh_end_editmesh(obedit->data, em);
759                 return ret;
760         }
761
762         return 0;
763 }
764
765 int ED_space_image_show_uvshadow(SpaceImage *sima, Object *obedit)
766 {
767         if(ED_space_image_show_render(sima))
768                 return 0;
769
770         if(ED_space_image_show_paint(sima))
771                 if(obedit && obedit->type == OB_MESH) {
772                         EditMesh *em = BKE_mesh_get_editmesh(obedit->data);
773                         int ret;
774
775                         ret = EM_texFaceCheck(em);
776
777                         BKE_mesh_end_editmesh(obedit->data, em);
778                         return ret;
779                 }
780
781         return 0;
782 }
783