accident when merge. revert to r37405
[blender.git] / source / blender / editors / space_node / space_node.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 /** \file blender/editors/space_node/space_node.c
30  *  \ingroup spnode
31  */
32
33
34 #include <string.h>
35 #include <stdio.h>
36
37 #include "DNA_node_types.h"
38 #include "DNA_object_types.h"
39 #include "DNA_material_types.h"
40 #include "DNA_scene_types.h"
41
42 #include "MEM_guardedalloc.h"
43
44 #include "BLI_blenlib.h"
45 #include "BLI_math.h"
46 #include "BLI_rand.h"
47 #include "BLI_utildefines.h"
48
49 #include "BKE_context.h"
50 #include "BKE_screen.h"
51 #include "BKE_node.h"
52
53 #include "ED_space_api.h"
54 #include "ED_render.h"
55 #include "ED_screen.h"
56
57
58 #include "WM_api.h"
59 #include "WM_types.h"
60
61 #include "UI_resources.h"
62 #include "UI_view2d.h"
63
64 #include "RNA_access.h"
65
66 #include "node_intern.h"        // own include
67
68 /* ******************** manage regions ********************* */
69
70 ARegion *node_has_buttons_region(ScrArea *sa)
71 {
72         ARegion *ar, *arnew;
73
74         ar= BKE_area_find_region_type(sa, RGN_TYPE_UI);
75         if(ar) return ar;
76         
77         /* add subdiv level; after header */
78         ar= BKE_area_find_region_type(sa, RGN_TYPE_HEADER);
79
80         /* is error! */
81         if(ar==NULL) return NULL;
82         
83         arnew= MEM_callocN(sizeof(ARegion), "buttons for node");
84         
85         BLI_insertlinkafter(&sa->regionbase, ar, arnew);
86         arnew->regiontype= RGN_TYPE_UI;
87         arnew->alignment= RGN_ALIGN_RIGHT;
88         
89         arnew->flag = RGN_FLAG_HIDDEN;
90         
91         return arnew;
92 }
93
94 /* ******************** default callbacks for node space ***************** */
95
96 static SpaceLink *node_new(const bContext *UNUSED(C))
97 {
98         ARegion *ar;
99         SpaceNode *snode;
100         
101         snode= MEM_callocN(sizeof(SpaceNode), "initnode");
102         snode->spacetype= SPACE_NODE;   
103         
104         /* backdrop */
105         snode->zoom = 1.0f;
106         
107         /* header */
108         ar= MEM_callocN(sizeof(ARegion), "header for node");
109         
110         BLI_addtail(&snode->regionbase, ar);
111         ar->regiontype= RGN_TYPE_HEADER;
112         ar->alignment= RGN_ALIGN_BOTTOM;
113         
114         /* buttons/list view */
115         ar= MEM_callocN(sizeof(ARegion), "buttons for node");
116         
117         BLI_addtail(&snode->regionbase, ar);
118         ar->regiontype= RGN_TYPE_UI;
119         ar->alignment= RGN_ALIGN_RIGHT;
120         ar->flag = RGN_FLAG_HIDDEN;
121         
122         /* main area */
123         ar= MEM_callocN(sizeof(ARegion), "main area for node");
124         
125         BLI_addtail(&snode->regionbase, ar);
126         ar->regiontype= RGN_TYPE_WINDOW;
127         
128         ar->v2d.tot.xmin=  -256.0f;
129         ar->v2d.tot.ymin=  -256.0f;
130         ar->v2d.tot.xmax= 768.0f;
131         ar->v2d.tot.ymax= 768.0f;
132         
133         ar->v2d.cur.xmin=  -256.0f;
134         ar->v2d.cur.ymin=  -256.0f;
135         ar->v2d.cur.xmax= 768.0f;
136         ar->v2d.cur.ymax= 768.0f;
137         
138         ar->v2d.min[0]= 1.0f;
139         ar->v2d.min[1]= 1.0f;
140         
141         ar->v2d.max[0]= 32000.0f;
142         ar->v2d.max[1]= 32000.0f;
143         
144         ar->v2d.minzoom= 0.09f;
145         ar->v2d.maxzoom= 2.31f;
146         
147         ar->v2d.scroll= (V2D_SCROLL_RIGHT|V2D_SCROLL_BOTTOM);
148         ar->v2d.keepzoom= V2D_LIMITZOOM|V2D_KEEPASPECT;
149         ar->v2d.keeptot= 0;
150         
151         return (SpaceLink *)snode;
152 }
153
154 /* not spacelink itself */
155 static void node_free(SpaceLink *UNUSED(sl))
156 {       
157         
158 }
159
160
161 /* spacetype; init callback */
162 static void node_init(struct wmWindowManager *UNUSED(wm), ScrArea *UNUSED(sa))
163 {
164
165 }
166
167 static void node_area_listener(ScrArea *sa, wmNotifier *wmn)
168 {
169         /* note, ED_area_tag_refresh will re-execute compositor */
170         SpaceNode *snode= sa->spacedata.first;
171         int type= snode->treetype;
172         
173         /* preview renders */
174         switch(wmn->category) {
175                 case NC_SCENE:
176                         switch (wmn->data) {
177                                 case ND_NODES:
178                                 case ND_FRAME:
179                                         ED_area_tag_refresh(sa);
180                                         break;
181                                 case ND_TRANSFORM_DONE:
182                                         if(type==NTREE_COMPOSIT) {
183                                                 if(snode->flag & SNODE_AUTO_RENDER) {
184                                                         snode->recalc= 1;
185                                                         ED_area_tag_refresh(sa);
186                                                 }
187                                         }
188                                         break;
189                         }
190                         break;
191                 case NC_WM:
192                         if(wmn->data==ND_FILEREAD)
193                                 ED_area_tag_refresh(sa);
194                         break;
195                 
196                 /* future: add ID checks? */
197                 case NC_MATERIAL:
198                         if(type==NTREE_SHADER) {
199                                 if(wmn->data==ND_SHADING)
200                                         ED_area_tag_refresh(sa);
201                                 else if(wmn->data==ND_SHADING_DRAW)
202                                         ED_area_tag_refresh(sa);
203                         }
204                         break;
205                 case NC_TEXTURE:
206                         if(type==NTREE_SHADER || type==NTREE_TEXTURE) {
207                                 if(wmn->data==ND_NODES)
208                                         ED_area_tag_refresh(sa);
209                         }
210                         break;
211                 case NC_TEXT:
212                         /* pynodes */
213                         if(wmn->data==ND_SHADING)
214                                 ED_area_tag_refresh(sa);
215                         break;
216                 case NC_SPACE:
217                         if(wmn->data==ND_SPACE_NODE)
218                                 ED_area_tag_refresh(sa);
219                         else if(wmn->data==ND_SPACE_NODE_VIEW)
220                                 ED_area_tag_redraw(sa);
221                         break;
222                 case NC_NODE:
223                         if (wmn->action == NA_EDITED)
224                                 ED_area_tag_refresh(sa);
225                         break;
226
227                 case NC_IMAGE:
228                         if (wmn->action == NA_EDITED) {
229                                 if(type==NTREE_COMPOSIT) {
230                                         Scene *scene= wmn->window->screen->scene;
231                                         
232                                         /* note that NodeTagIDChanged is already called by BKE_image_signal() on all
233                                          * scenes so really this is just to know if the images is used in the compo else
234                                          * painting on images could become very slow when the compositor is open. */
235                                         if(NodeTagIDChanged(scene->nodetree, wmn->reference))
236                                                 ED_area_tag_refresh(sa);
237                                 }
238                         }
239                         break;
240         }
241 }
242
243 static void node_area_refresh(const struct bContext *C, struct ScrArea *sa)
244 {
245         /* default now: refresh node is starting preview */
246         SpaceNode *snode= sa->spacedata.first;
247
248         snode_set_context(snode, CTX_data_scene(C));
249         
250         if(snode->nodetree) {
251                 if(snode->treetype==NTREE_SHADER) {
252                         Material *ma= (Material *)snode->id;
253                         if(ma->use_nodes)
254                                 ED_preview_shader_job(C, sa, snode->id, NULL, NULL, 100, 100, PR_NODE_RENDER);
255                 }
256                 else if(snode->treetype==NTREE_COMPOSIT) {
257                         Scene *scene= (Scene *)snode->id;
258                         if(scene->use_nodes) {
259                                 /* recalc is set on 3d view changes for auto compo */
260                                 if(snode->recalc) {
261                                         snode->recalc= 0;
262                                         node_render_changed_exec((struct bContext*)C, NULL);
263                                 }
264                                 else 
265                                         snode_composite_job(C, sa);
266                         }
267                 }
268                 else if(snode->treetype==NTREE_TEXTURE) {
269                         Tex *tex= (Tex *)snode->id;
270                         if(tex->use_nodes) {
271                                 ED_preview_shader_job(C, sa, snode->id, NULL, NULL, 100, 100, PR_NODE_RENDER);
272                         }
273                 }
274         }
275 }
276
277 static SpaceLink *node_duplicate(SpaceLink *sl)
278 {
279         SpaceNode *snoden= MEM_dupallocN(sl);
280         
281         /* clear or remove stuff from old */
282         snoden->nodetree= NULL;
283         snoden->linkdrag.first= snoden->linkdrag.last= NULL;
284         
285         return (SpaceLink *)snoden;
286 }
287
288
289 /* add handlers, stuff you only do once or on area/region changes */
290 static void node_buttons_area_init(wmWindowManager *wm, ARegion *ar)
291 {
292         wmKeyMap *keymap;
293
294         ED_region_panels_init(wm, ar);
295         
296         keymap= WM_keymap_find(wm->defaultconf, "Node Generic", SPACE_NODE, 0);
297         WM_event_add_keymap_handler(&ar->handlers, keymap);
298 }
299
300 static void node_buttons_area_draw(const bContext *C, ARegion *ar)
301 {
302         ED_region_panels(C, ar, 1, NULL, -1);
303 }
304
305 /* Initialise main area, setting handlers. */
306 static void node_main_area_init(wmWindowManager *wm, ARegion *ar)
307 {
308         wmKeyMap *keymap;
309         ListBase *lb;
310         
311         UI_view2d_region_reinit(&ar->v2d, V2D_COMMONVIEW_CUSTOM, ar->winx, ar->winy);
312         
313         /* own keymaps */
314         keymap= WM_keymap_find(wm->defaultconf, "Node Generic", SPACE_NODE, 0);
315         WM_event_add_keymap_handler(&ar->handlers, keymap);
316         
317         keymap= WM_keymap_find(wm->defaultconf, "Node Editor", SPACE_NODE, 0);
318         WM_event_add_keymap_handler_bb(&ar->handlers, keymap, &ar->v2d.mask, &ar->winrct);
319         
320         /* add drop boxes */
321         lb = WM_dropboxmap_find("Node Editor", SPACE_NODE, RGN_TYPE_WINDOW);
322         
323         WM_event_add_dropbox_handler(&ar->handlers, lb);
324 }
325
326 static void node_main_area_draw(const bContext *C, ARegion *ar)
327 {
328         View2D *v2d= &ar->v2d;
329         
330         drawnodespace(C, ar, v2d);
331 }
332
333
334 /* ************* dropboxes ************* */
335
336 static int node_drop_poll(bContext *UNUSED(C), wmDrag *drag, wmEvent *UNUSED(event))
337 {
338         if(drag->type==WM_DRAG_ID) {
339                 ID *id= (ID *)drag->poin;
340                 if( GS(id->name)==ID_IM )
341                         return 1;
342         }
343         else if(drag->type==WM_DRAG_PATH){
344                 if(ELEM(drag->icon, 0, ICON_FILE_IMAGE))        /* rule might not work? */
345                         return 1;
346         }
347         return 0;
348 }
349
350 static void node_id_path_drop_copy(wmDrag *drag, wmDropBox *drop)
351 {
352         ID *id= (ID *)drag->poin;
353         
354         if(id) {
355                 RNA_string_set(drop->ptr, "name", id->name+2);
356         }
357         if (drag->path[0]) {
358                 RNA_string_set(drop->ptr, "filepath", drag->path);
359         }
360 }
361
362 /* this region dropbox definition */
363 static void node_dropboxes(void)
364 {
365         ListBase *lb= WM_dropboxmap_find("Node Editor", SPACE_NODE, RGN_TYPE_WINDOW);
366         
367         WM_dropbox_add(lb, "NODE_OT_add_file", node_drop_poll, node_id_path_drop_copy);
368         
369 }
370
371 /* ************* end drop *********** */
372
373
374 /* add handlers, stuff you only do once or on area/region changes */
375 static void node_header_area_init(wmWindowManager *UNUSED(wm), ARegion *ar)
376 {
377         ED_region_header_init(ar);
378 }
379
380 static void node_header_area_draw(const bContext *C, ARegion *ar)
381 {
382         SpaceNode *snode= CTX_wm_space_node(C);
383         Scene *scene= CTX_data_scene(C);
384
385         /* find and set the context */
386         snode_set_context(snode, scene);
387
388         ED_region_header(C, ar);
389 }
390
391 /* used for header + main area */
392 static void node_region_listener(ARegion *ar, wmNotifier *wmn)
393 {
394         /* context changes */
395         switch(wmn->category) {
396                 case NC_SPACE:
397                         if(wmn->data==ND_SPACE_NODE)
398                                 ED_region_tag_redraw(ar);
399                         break;
400                 case NC_SCREEN:
401                         if(wmn->data == ND_GPENCIL)     
402                                 ED_region_tag_redraw(ar);
403                         break;
404                 case NC_SCENE:
405                 case NC_MATERIAL:
406                 case NC_TEXTURE:
407                 case NC_NODE:
408                         ED_region_tag_redraw(ar);
409                         break;
410                 case NC_ID:
411                         if(wmn->action == NA_RENAME)
412                                 ED_region_tag_redraw(ar);
413                         break;
414         }
415 }
416
417 const char *node_context_dir[] = {"selected_nodes", NULL};
418
419 static int node_context(const bContext *C, const char *member, bContextDataResult *result)
420 {
421         SpaceNode *snode= CTX_wm_space_node(C);
422         
423         if(CTX_data_dir(member)) {
424                 CTX_data_dir_set(result, node_context_dir);
425                 return 1;
426         }
427         else if(CTX_data_equals(member, "selected_nodes")) {
428                 bNode *node;
429                 
430                 for(next_node(snode->edittree); (node=next_node(NULL));) {
431                         if(node->flag & NODE_SELECT) {
432                                 CTX_data_list_add(result, &snode->edittree->id, &RNA_Node, node);
433                         }
434                 }
435                 CTX_data_type_set(result, CTX_DATA_TYPE_COLLECTION);
436                 return 1;
437         }
438         
439         return 0;
440 }
441
442 /* only called once, from space/spacetypes.c */
443 void ED_spacetype_node(void)
444 {
445         SpaceType *st= MEM_callocN(sizeof(SpaceType), "spacetype node");
446         ARegionType *art;
447         
448         st->spaceid= SPACE_NODE;
449         strncpy(st->name, "Node", BKE_ST_MAXNAME);
450         
451         st->new= node_new;
452         st->free= node_free;
453         st->init= node_init;
454         st->duplicate= node_duplicate;
455         st->operatortypes= node_operatortypes;
456         st->keymap= node_keymap;
457         st->listener= node_area_listener;
458         st->refresh= node_area_refresh;
459         st->context= node_context;
460         st->dropboxes = node_dropboxes;
461         
462         /* regions: main window */
463         art= MEM_callocN(sizeof(ARegionType), "spacetype node region");
464         art->regionid = RGN_TYPE_WINDOW;
465         art->init= node_main_area_init;
466         art->draw= node_main_area_draw;
467         art->listener= node_region_listener;
468         art->keymapflag= ED_KEYMAP_UI|ED_KEYMAP_VIEW2D|ED_KEYMAP_FRAMES|ED_KEYMAP_GPENCIL;
469
470         BLI_addhead(&st->regiontypes, art);
471         
472         /* regions: header */
473         art= MEM_callocN(sizeof(ARegionType), "spacetype node region");
474         art->regionid = RGN_TYPE_HEADER;
475         art->prefsizey= HEADERY;
476         art->keymapflag= ED_KEYMAP_UI|ED_KEYMAP_VIEW2D|ED_KEYMAP_FRAMES|ED_KEYMAP_HEADER;
477         art->listener= node_region_listener;
478         art->init= node_header_area_init;
479         art->draw= node_header_area_draw;
480         
481         BLI_addhead(&st->regiontypes, art);
482
483         node_menus_register();
484         
485         /* regions: listview/buttons */
486         art= MEM_callocN(sizeof(ARegionType), "spacetype node region");
487         art->regionid = RGN_TYPE_UI;
488         art->prefsizex= 180; // XXX
489         art->keymapflag= ED_KEYMAP_UI|ED_KEYMAP_FRAMES;
490         art->listener= node_region_listener;
491         art->init= node_buttons_area_init;
492         art->draw= node_buttons_area_draw;
493         BLI_addhead(&st->regiontypes, art);
494         
495         node_buttons_register(art);
496         
497         BKE_spacetype_register(st);
498 }
499