6429730c4298d4341d8166304aa7a4e8a3dc46f6
[blender.git] / source / blender / editors / space_view3d / view3d_header.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) 2004-2008 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_view3d/view3d_header.c
30  *  \ingroup spview3d
31  */
32
33
34 #include <string.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37
38 #include "DNA_scene_types.h"
39 #include "DNA_object_types.h"
40
41 #include "RNA_access.h"
42
43 #include "MEM_guardedalloc.h"
44
45 #include "BLI_math.h"
46 #include "BLI_blenlib.h"
47 #include "BLI_editVert.h"
48 #include "BLI_utildefines.h"
49
50 #include "BKE_context.h"
51 #include "BKE_depsgraph.h"
52 #include "BKE_effect.h"
53 #include "BKE_main.h"
54 #include "BKE_mesh.h"
55 #include "BKE_modifier.h"
56 #include "BKE_paint.h"
57 #include "BKE_screen.h"
58
59 #include "ED_mesh.h"
60 #include "ED_util.h"
61 #include "ED_screen.h"
62 #include "ED_transform.h"
63 #include "ED_types.h"
64
65 #include "WM_api.h"
66 #include "WM_types.h"
67
68 #include "RNA_define.h"
69 #include "RNA_enum_types.h"
70
71 #include "UI_interface.h"
72 #include "UI_resources.h"
73
74 #include "view3d_intern.h"
75
76
77 /* View3d->modeselect 
78  * This is a bit of a dodgy hack to enable a 'mode' menu with icons+labels
79  * rather than those buttons.
80  * I know the implementation's not good - it's an experiment to see if this
81  * approach would work well
82  *
83  * This can be cleaned when I make some new 'mode' icons.
84  */
85
86 #define TEST_EDITMESH   if(obedit==0) return; \
87                                                 if( (v3d->lay & obedit->lay)==0 ) return;
88
89 /* view3d handler codes */
90 #define VIEW3D_HANDLER_BACKGROUND       1
91 #define VIEW3D_HANDLER_PROPERTIES       2
92 #define VIEW3D_HANDLER_OBJECT           3
93 #define VIEW3D_HANDLER_PREVIEW          4
94 #define VIEW3D_HANDLER_MULTIRES         5
95 #define VIEW3D_HANDLER_TRANSFORM        6
96 #define VIEW3D_HANDLER_GREASEPENCIL 7
97 #define VIEW3D_HANDLER_BONESKETCH       8
98
99 /* end XXX ************* */
100
101 static void do_view3d_header_buttons(bContext *C, void *arg, int event);
102
103 #define B_SCENELOCK 101
104 #define B_FULL          102
105 #define B_HOME          103
106 #define B_VIEWBUT       104
107 #define B_PERSP         105
108 #define B_MODESELECT 108
109 #define B_SEL_VERT      110
110 #define B_SEL_EDGE      111
111 #define B_SEL_FACE      112
112 #define B_MAN_TRANS     116
113 #define B_MAN_ROT       117
114 #define B_MAN_SCALE     118
115 #define B_NDOF          119     
116 #define B_MAN_MODE      120
117 #define B_REDR          122
118 #define B_NOP           123
119
120 // XXX quickly ported across
121 static void handle_view3d_lock(bContext *C) 
122 {
123         Main *bmain= CTX_data_main(C);
124         Scene *scene= CTX_data_scene(C);
125         ScrArea *sa= CTX_wm_area(C);
126         View3D *v3d= CTX_wm_view3d(C);
127         
128         if (v3d != NULL && sa != NULL) {
129                 if(v3d->localvd==NULL && v3d->scenelock && sa->spacetype==SPACE_VIEW3D) {
130                         /* copy to scene */
131                         scene->lay= v3d->lay;
132                         scene->layact= v3d->layact;
133                         scene->camera= v3d->camera;
134
135                         /* not through notifiery, listener don't have context
136                            and non-open screens or spaces need to be updated too */
137                         BKE_screen_view3d_main_sync(&bmain->screen, scene);
138                         
139                         /* notifiers for scene update */
140                         WM_event_add_notifier(C, NC_SCENE|ND_LAYER, scene);
141                 }
142         }
143 }
144
145 /* layer code is on three levels actually:
146 - here for operator
147 - uiTemplateLayers in interface/ code for buttons
148 - ED_view3d_scene_layer_set for RNA
149  */
150 static void view3d_layers_editmode_ensure(Scene *scene, View3D *v3d)
151 {
152         /* sanity check - when in editmode disallow switching the editmode layer off since its confusing
153          * an alternative would be to always draw the editmode object. */
154         if(scene->obedit && (scene->obedit->lay & v3d->lay)==0) {
155                 int bit;
156                 for(bit=0; bit<32; bit++) {
157                         if(scene->obedit->lay & (1<<bit)) {
158                                 v3d->lay |= 1<<bit;
159                                 break;
160                         }
161                 }
162         }
163 }
164
165 static int view3d_layers_exec(bContext *C, wmOperator *op)
166 {
167         Scene *scene= CTX_data_scene(C);
168         ScrArea *sa= CTX_wm_area(C);
169         View3D *v3d= sa->spacedata.first;
170         int nr= RNA_int_get(op->ptr, "nr");
171         int toggle= RNA_boolean_get(op->ptr, "toggle");
172         
173         if(nr < 0)
174                 return OPERATOR_CANCELLED;
175
176         if(nr == 0) {
177                 /* all layers */
178                 if(!v3d->layact)
179                         v3d->layact= 1;
180
181                 if (toggle && v3d->lay == ((1<<20)-1)) {
182                         /* return to active layer only */
183                         v3d->lay = v3d->layact;
184
185                         view3d_layers_editmode_ensure(scene, v3d);
186                 }
187                 else {
188                         v3d->lay |= (1<<20)-1;
189                 }               
190         }
191         else {
192                 int bit;
193                 nr--;
194
195                 if(RNA_boolean_get(op->ptr, "extend")) {
196                         if(toggle && v3d->lay & (1<<nr) && (v3d->lay & ~(1<<nr)))
197                                 v3d->lay &= ~(1<<nr);
198                         else
199                                 v3d->lay |= (1<<nr);
200                 } else {
201                         v3d->lay = (1<<nr);
202                 }
203
204                 view3d_layers_editmode_ensure(scene, v3d);
205
206                 /* set active layer, ensure to always have one */
207                 if(v3d->lay & (1<<nr))
208                    v3d->layact= 1<<nr;
209                 else if((v3d->lay & v3d->layact)==0) {
210                         for(bit=0; bit<32; bit++) {
211                                 if(v3d->lay & (1<<bit)) {
212                                         v3d->layact= 1<<bit;
213                                         break;
214                                 }
215                         }
216                 }
217         }
218         
219         if(v3d->scenelock) handle_view3d_lock(C);
220         
221         DAG_on_visible_update(CTX_data_main(C), FALSE);
222
223         ED_area_tag_redraw(sa);
224         
225         return OPERATOR_FINISHED;
226 }
227
228 /* applies shift and alt, lazy coding or ok? :) */
229 /* the local per-keymap-entry keymap will solve it */
230 static int view3d_layers_invoke(bContext *C, wmOperator *op, wmEvent *event)
231 {
232         if(event->ctrl || event->oskey)
233                 return OPERATOR_PASS_THROUGH;
234         
235         if(event->shift)
236                 RNA_boolean_set(op->ptr, "extend", 1);
237         
238         if(event->alt) {
239                 int nr= RNA_int_get(op->ptr, "nr") + 10;
240                 RNA_int_set(op->ptr, "nr", nr);
241         }
242         view3d_layers_exec(C, op);
243         
244         return OPERATOR_FINISHED;
245 }
246
247 static int view3d_layers_poll(bContext *C)
248 {
249         return (ED_operator_view3d_active(C) && CTX_wm_view3d(C)->localvd==NULL);
250 }
251
252 void VIEW3D_OT_layers(wmOperatorType *ot)
253 {
254         /* identifiers */
255         ot->name= "Layers";
256         ot->description= "Toggle layer(s) visibility";
257         ot->idname= "VIEW3D_OT_layers";
258         
259         /* api callbacks */
260         ot->invoke= view3d_layers_invoke;
261         ot->exec= view3d_layers_exec;
262         ot->poll= view3d_layers_poll;
263         
264         /* flags */
265         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
266         
267         RNA_def_int(ot->srna, "nr", 1, 0, 20, "Number", "The layer number to set, zero for all layers", 0, 20);
268         RNA_def_boolean(ot->srna, "extend", 0, "Extend", "Add this layer to the current view layers");
269         RNA_def_boolean(ot->srna, "toggle", 1, "Toggle", "Toggle the layer");
270 }
271
272 static char *view3d_modeselect_pup(Scene *scene)
273 {
274         Object *ob= OBACT;
275         static char string[256];
276         static char formatstr[] = "|%s %%x%d %%i%d";
277         char *str = string;
278
279         str += sprintf(str, "Mode: %%t");
280         
281         str += sprintf(str, formatstr, "Object Mode", OB_MODE_OBJECT, ICON_OBJECT_DATA);
282         
283         if(ob==NULL || ob->data==NULL) return string;
284         if(ob->id.lib) return string;
285         
286         if(!((ID *)ob->data)->lib) {
287                 /* if active object is editable */
288                 if ( ((ob->type == OB_MESH)
289                         || (ob->type == OB_CURVE) || (ob->type == OB_SURF) || (ob->type == OB_FONT)
290                         || (ob->type == OB_MBALL) || (ob->type == OB_LATTICE))) {
291                         
292                         str += sprintf(str, formatstr, "Edit Mode", OB_MODE_EDIT, ICON_EDITMODE_HLT);
293                 }
294                 else if (ob->type == OB_ARMATURE) {
295                         if (ob->mode & OB_MODE_POSE)
296                                 str += sprintf(str, formatstr, "Edit Mode", OB_MODE_EDIT|OB_MODE_POSE, ICON_EDITMODE_HLT);
297                         else
298                                 str += sprintf(str, formatstr, "Edit Mode", OB_MODE_EDIT, ICON_EDITMODE_HLT);
299                 }
300
301                 if (ob->type == OB_MESH) {
302
303                         str += sprintf(str, formatstr, "Sculpt Mode", OB_MODE_SCULPT, ICON_SCULPTMODE_HLT);
304                         str += sprintf(str, formatstr, "Vertex Paint", OB_MODE_VERTEX_PAINT, ICON_VPAINT_HLT);
305                         str += sprintf(str, formatstr, "Texture Paint", OB_MODE_TEXTURE_PAINT, ICON_TPAINT_HLT);
306                         str += sprintf(str, formatstr, "Weight Paint", OB_MODE_WEIGHT_PAINT, ICON_WPAINT_HLT);
307                 }
308         }
309                 
310         /* if active object is an armature */
311         if (ob->type==OB_ARMATURE) {
312                 str += sprintf(str, formatstr, "Pose Mode", OB_MODE_POSE, ICON_POSE_HLT);
313         }
314
315         if (ob->particlesystem.first || modifiers_findByType(ob, eModifierType_Cloth) || modifiers_findByType(ob, eModifierType_Softbody)) {
316                 str += sprintf(str, formatstr, "Particle Mode", OB_MODE_PARTICLE_EDIT, ICON_PARTICLEMODE);
317         }
318         (void)str;
319         return (string);
320 }
321
322
323 static void do_view3d_header_buttons(bContext *C, void *UNUSED(arg), int event)
324 {
325         wmWindow *win= CTX_wm_window(C);
326         ToolSettings *ts= CTX_data_tool_settings(C);
327         ScrArea *sa= CTX_wm_area(C);
328         View3D *v3d= sa->spacedata.first;
329         Object *obedit = CTX_data_edit_object(C);
330         EditMesh *em= NULL;
331         int ctrl= win->eventstate->ctrl, shift= win->eventstate->shift;
332         PointerRNA props_ptr;
333         
334         if(obedit && obedit->type==OB_MESH) {
335                 em= BKE_mesh_get_editmesh((Mesh *)obedit->data);
336         }
337         /* watch it: if sa->win does not exist, check that when calling direct drawing routines */
338
339         switch(event) {
340         case B_REDR:
341                 ED_area_tag_redraw(sa);
342                 break;
343                 
344         case B_MODESELECT:
345                 WM_operator_properties_create(&props_ptr, "OBJECT_OT_mode_set");
346                 RNA_enum_set(&props_ptr, "mode", v3d->modeselect);
347                 WM_operator_name_call(C, "OBJECT_OT_mode_set", WM_OP_EXEC_REGION_WIN, &props_ptr);
348                 WM_operator_properties_free(&props_ptr);
349                 break;          
350                 
351         case B_SEL_VERT:
352                 if(em) {
353                         if(shift==0 || em->selectmode==0)
354                                 em->selectmode= SCE_SELECT_VERTEX;
355                         ts->selectmode= em->selectmode;
356                         EM_selectmode_set(em);
357                         WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);
358                         ED_undo_push(C, "Selectmode Set: Vertex");
359                 }
360                 break;
361         case B_SEL_EDGE:
362                 if(em) {
363                         if(shift==0 || em->selectmode==0){
364                                 if( (em->selectmode ^ SCE_SELECT_EDGE) == SCE_SELECT_VERTEX){
365                                         if(ctrl) EM_convertsel(em, SCE_SELECT_VERTEX,SCE_SELECT_EDGE); 
366                                 }
367                                 em->selectmode = SCE_SELECT_EDGE;
368                         }
369                         ts->selectmode= em->selectmode;
370                         EM_selectmode_set(em);
371                         WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);
372                         ED_undo_push(C, "Selectmode Set: Edge");
373                 }
374                 break;
375         case B_SEL_FACE:
376                 if(em) {
377                         if( shift==0 || em->selectmode==0){
378                                 if( ((em->selectmode ^ SCE_SELECT_FACE) == SCE_SELECT_VERTEX) || ((em->selectmode ^ SCE_SELECT_FACE) == SCE_SELECT_EDGE)){
379                                         if(ctrl)
380                                                 EM_convertsel(em, (em->selectmode ^ SCE_SELECT_FACE),SCE_SELECT_FACE);
381                                 }
382                                 em->selectmode = SCE_SELECT_FACE;
383                         }
384                         ts->selectmode= em->selectmode;
385                         EM_selectmode_set(em);
386                         WM_event_add_notifier(C, NC_GEOM|ND_SELECT, obedit->data);
387                         ED_undo_push(C, "Selectmode Set: Face");
388                 }
389                 break;  
390
391         case B_MAN_TRANS:
392                 if( shift==0 || v3d->twtype==0) {
393                         v3d->twtype= V3D_MANIP_TRANSLATE;
394                 }
395                 ED_area_tag_redraw(sa);
396                 break;
397         case B_MAN_ROT:
398                 if( shift==0 || v3d->twtype==0) {
399                         v3d->twtype= V3D_MANIP_ROTATE;
400                 }
401                 ED_area_tag_redraw(sa);
402                 break;
403         case B_MAN_SCALE:
404                 if( shift==0 || v3d->twtype==0) {
405                         v3d->twtype= V3D_MANIP_SCALE;
406                 }
407                 ED_area_tag_redraw(sa);
408                 break;
409         case B_NDOF:
410                 ED_area_tag_redraw(sa);
411                 break;
412         case B_MAN_MODE:
413                 ED_area_tag_redraw(sa);
414                 break;
415         default:
416                 break;
417         }
418
419         if(obedit && obedit->type==OB_MESH)
420                 BKE_mesh_end_editmesh(obedit->data, em);
421 }
422
423 /* Returns the icon associated with an object mode */
424 static int object_mode_icon(int mode)
425 {
426         EnumPropertyItem *item = object_mode_items;
427         
428         while(item->name != NULL) {
429                 if(item->value == mode)
430                         return item->icon;
431                 ++item;
432         }
433
434         return ICON_OBJECT_DATAMODE;
435 }
436
437 void uiTemplateEditModeSelection(uiLayout *layout, struct bContext *C)
438 {
439         Object *obedit = CTX_data_edit_object(C);
440         uiBlock *block= uiLayoutGetBlock(layout);
441
442         uiBlockSetHandleFunc(block, do_view3d_header_buttons, NULL);
443
444         if(obedit && (obedit->type == OB_MESH)) {
445                 EditMesh *em= BKE_mesh_get_editmesh((Mesh *)obedit->data);
446                 uiLayout *row;
447
448                 row= uiLayoutRow(layout, 1);
449                 block= uiLayoutGetBlock(row);
450                 uiDefIconButBitS(block, TOG, SCE_SELECT_VERTEX, B_SEL_VERT, ICON_VERTEXSEL, 0,0,UI_UNIT_X,UI_UNIT_Y, &em->selectmode, 1.0, 0.0, 0, 0, "Vertex select mode");
451                 uiDefIconButBitS(block, TOG, SCE_SELECT_EDGE, B_SEL_EDGE, ICON_EDGESEL, 0,0,UI_UNIT_X,UI_UNIT_Y, &em->selectmode, 1.0, 0.0, 0, 0, "Edge select mode");
452                 uiDefIconButBitS(block, TOG, SCE_SELECT_FACE, B_SEL_FACE, ICON_FACESEL, 0,0,UI_UNIT_X,UI_UNIT_Y, &em->selectmode, 1.0, 0.0, 0, 0, "Face select mode");
453
454                 BKE_mesh_end_editmesh(obedit->data, em);
455         }
456 }
457
458 void uiTemplateHeader3D(uiLayout *layout, struct bContext *C)
459 {
460         bScreen *screen= CTX_wm_screen(C);
461         ScrArea *sa= CTX_wm_area(C);
462         View3D *v3d= sa->spacedata.first;
463         Scene *scene= CTX_data_scene(C);
464         ToolSettings *ts= CTX_data_tool_settings(C);
465         PointerRNA v3dptr, toolsptr, sceneptr;
466         Object *ob= OBACT;
467         Object *obedit = CTX_data_edit_object(C);
468         uiBlock *block;
469         uiBut *but;
470         uiLayout *row;
471         const float dpi_fac= UI_DPI_FAC;
472         
473         RNA_pointer_create(&screen->id, &RNA_SpaceView3D, v3d, &v3dptr);        
474         RNA_pointer_create(&scene->id, &RNA_ToolSettings, ts, &toolsptr);
475         RNA_pointer_create(&scene->id, &RNA_Scene, scene, &sceneptr);
476
477         block= uiLayoutGetBlock(layout);
478         uiBlockSetHandleFunc(block, do_view3d_header_buttons, NULL);
479
480         /* other buttons: */
481         uiBlockSetEmboss(block, UI_EMBOSS);
482         
483         /* mode */
484         if(ob)
485                 v3d->modeselect = ob->mode;
486         else
487                 v3d->modeselect = OB_MODE_OBJECT;
488
489         uiBlockBeginAlign(block);
490         uiDefIconTextButS(block, MENU, B_MODESELECT, object_mode_icon(v3d->modeselect), view3d_modeselect_pup(scene) , 
491                           0,0,126 * dpi_fac, UI_UNIT_Y, &(v3d->modeselect), 0, 0, 0, 0, "Mode");
492         uiBlockEndAlign(block);
493         
494         /* Draw type */
495         uiItemR(layout, &v3dptr, "viewport_shade", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
496
497         if (obedit==NULL && ((ob && ob->mode & (OB_MODE_VERTEX_PAINT|OB_MODE_WEIGHT_PAINT|OB_MODE_TEXTURE_PAINT)))) {
498                 /* Manipulators aren't used in weight paint mode */
499                 
500                 PointerRNA meshptr;
501
502                 RNA_pointer_create(&ob->id, &RNA_Mesh, ob->data, &meshptr);
503                 if(ob->mode & (OB_MODE_TEXTURE_PAINT|OB_MODE_VERTEX_PAINT)) {
504                         uiItemR(layout, &meshptr, "use_paint_mask", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
505                 } else {
506                         /* Radish */
507                         row= uiLayoutRow(layout, 1);
508                         uiItemR(row, &meshptr, "use_paint_mask", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
509                         uiItemR(row, &meshptr, "use_paint_mask_vertex", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
510                 }
511         } else {
512                 const char *str_menu;
513
514                 row= uiLayoutRow(layout, 1);
515                 uiItemR(row, &v3dptr, "pivot_point", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
516                 uiItemR(row, &v3dptr, "use_pivot_point_align", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
517
518                 /* Transform widget / manipulators */
519                 row= uiLayoutRow(layout, 1);
520                 uiItemR(row, &v3dptr, "show_manipulator", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
521                 block= uiLayoutGetBlock(row);
522                 
523                 if(v3d->twflag & V3D_USE_MANIPULATOR) {
524                         but= uiDefIconButBitC(block, TOG, V3D_MANIP_TRANSLATE, B_MAN_TRANS, ICON_MAN_TRANS, 0,0,UI_UNIT_X,UI_UNIT_Y, &v3d->twtype, 1.0, 0.0, 0, 0, "Translate manipulator mode");
525                         uiButClearFlag(but, UI_BUT_UNDO); /* skip undo on screen buttons */
526                         but= uiDefIconButBitC(block, TOG, V3D_MANIP_ROTATE, B_MAN_ROT, ICON_MAN_ROT, 0,0,UI_UNIT_X,UI_UNIT_Y, &v3d->twtype, 1.0, 0.0, 0, 0, "Rotate manipulator mode");
527                         uiButClearFlag(but, UI_BUT_UNDO); /* skip undo on screen buttons */
528                         but= uiDefIconButBitC(block, TOG, V3D_MANIP_SCALE, B_MAN_SCALE, ICON_MAN_SCALE, 0,0,UI_UNIT_X,UI_UNIT_Y, &v3d->twtype, 1.0, 0.0, 0, 0, "Scale manipulator mode");
529                         uiButClearFlag(but, UI_BUT_UNDO); /* skip undo on screen buttons */
530                 }
531                         
532                 if (v3d->twmode > (BIF_countTransformOrientation(C) - 1) + V3D_MANIP_CUSTOM) {
533                         v3d->twmode = 0;
534                 }
535                         
536                 str_menu = BIF_menustringTransformOrientation(C, "Orientation");
537                 but= uiDefButC(block, MENU, B_MAN_MODE, str_menu,0,0,70 * dpi_fac, UI_UNIT_Y, &v3d->twmode, 0, 0, 0, 0, "Transform Orientation");
538                 uiButClearFlag(but, UI_BUT_UNDO); /* skip undo on screen buttons */
539                 MEM_freeN((void *)str_menu);
540         }
541
542         if(obedit==NULL && v3d->localvd==NULL) {
543                 unsigned int ob_lay = ob ? ob->lay : 0;
544                 
545                 /* Layers */
546                 if (v3d->scenelock)
547                         uiTemplateLayers(layout, &sceneptr, "layers", &v3dptr, "layers_used", ob_lay);
548                 else
549                         uiTemplateLayers(layout, &v3dptr, "layers", &v3dptr, "layers_used", ob_lay);
550
551                 /* Scene lock */
552                 uiItemR(layout, &v3dptr, "lock_camera_and_layers", UI_ITEM_R_ICON_ONLY, "", ICON_NONE);
553         }
554         
555         uiTemplateEditModeSelection(layout, C);
556 }
557