85103b4224448790d1305d05fe37ce554d98d5da
[blender.git] / source / blender / editors / interface / interface_handlers.c
1 /*
2  * ***** BEGIN GPL LICENSE BLOCK *****
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version. 
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  *
18  * The Original Code is Copyright (C) 2008 Blender Foundation.
19  * All rights reserved.
20  * 
21  * Contributor(s): Blender Foundation
22  *
23  * ***** END GPL LICENSE BLOCK *****
24  */
25
26 /** \file blender/editors/interface/interface_handlers.c
27  *  \ingroup edinterface
28  */
29
30
31 #include <float.h>
32 #include <limits.h>
33 #include <math.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <ctype.h>
37 #include <assert.h>
38
39 #include "MEM_guardedalloc.h"
40
41 #include "DNA_sensor_types.h"
42 #include "DNA_controller_types.h"
43 #include "DNA_actuator_types.h"
44
45 #include "DNA_object_types.h"
46 #include "DNA_scene_types.h"
47
48 #include "BLI_math.h"
49 #include "BLI_blenlib.h"
50 #include "BLI_utildefines.h"
51
52 #include "PIL_time.h"
53
54 #include "BKE_colortools.h"
55 #include "BKE_context.h"
56 #include "BKE_idprop.h"
57 #include "BKE_report.h"
58 #include "BKE_texture.h"
59 #include "BKE_unit.h"
60
61 #include "ED_screen.h"
62 #include "ED_util.h"
63 #include "ED_keyframing.h"
64
65 #include "UI_interface.h"
66
67 #include "BLF_api.h"
68
69 #include "interface_intern.h"
70
71 #include "RNA_access.h"
72
73 #include "WM_api.h"
74 #include "WM_types.h"
75
76 /* proto */
77 static void ui_add_smart_controller(bContext *C, uiBut *from, uiBut *to);
78 static void ui_add_link(bContext *C, uiBut *from, uiBut *to);
79
80 /***************** structs and defines ****************/
81
82 #define BUTTON_TOOLTIP_DELAY            0.500
83 #define BUTTON_FLASH_DELAY                      0.020
84 #define MENU_SCROLL_INTERVAL            0.1
85 #define BUTTON_AUTO_OPEN_THRESH         0.3
86 #define BUTTON_MOUSE_TOWARDS_THRESH     1.0
87
88 typedef enum uiButtonActivateType {
89         BUTTON_ACTIVATE_OVER,
90         BUTTON_ACTIVATE,
91         BUTTON_ACTIVATE_APPLY,
92         BUTTON_ACTIVATE_TEXT_EDITING,
93         BUTTON_ACTIVATE_OPEN
94 } uiButtonActivateType;
95
96 typedef enum uiHandleButtonState {
97         BUTTON_STATE_INIT,
98         BUTTON_STATE_HIGHLIGHT,
99         BUTTON_STATE_WAIT_FLASH,
100         BUTTON_STATE_WAIT_RELEASE,
101         BUTTON_STATE_WAIT_KEY_EVENT,
102         BUTTON_STATE_NUM_EDITING,
103         BUTTON_STATE_TEXT_EDITING,
104         BUTTON_STATE_TEXT_SELECTING,
105         BUTTON_STATE_MENU_OPEN,
106         BUTTON_STATE_WAIT_DRAG,
107         BUTTON_STATE_EXIT
108 } uiHandleButtonState;
109
110 typedef struct uiHandleButtonData {
111         wmWindowManager *wm;
112         wmWindow *window;
113         ARegion *region;
114
115         int interactive;
116
117         /* overall state */
118         uiHandleButtonState state;
119         int cancel, escapecancel, retval;
120         int applied, appliedinteractive;
121         wmTimer *flashtimer;
122
123         /* edited value */
124         char *str, *origstr;
125         double value, origvalue, startvalue;
126         float vec[3], origvec[3];
127         int togdual, togonly;
128         ColorBand *coba;
129
130         /* tooltip */
131         ARegion *tooltip;
132         wmTimer *tooltiptimer;
133         
134         /* auto open */
135         int used_mouse;
136         wmTimer *autoopentimer;
137
138         /* text selection/editing */
139         int maxlen, selextend, selstartx;
140
141         /* number editing / dragging */
142         int draglastx, draglasty;
143         int dragstartx, dragstarty;
144         int dragchange, draglock, dragsel;
145         float dragf, dragfstart;
146         CBData *dragcbd;
147
148         /* menu open (watch uiFreeActiveButtons) */
149         uiPopupBlockHandle *menu;
150         int menuretval;
151         
152         /* search box (watch uiFreeActiveButtons) */
153         ARegion *searchbox;
154
155         /* post activate */
156         uiButtonActivateType posttype;
157         uiBut *postbut;
158 } uiHandleButtonData;
159
160 typedef struct uiAfterFunc {
161         struct uiAfterFunc *next, *prev;
162
163         uiButHandleFunc func;
164         void *func_arg1;
165         void *func_arg2;
166         void *func_arg3;
167         
168         uiButHandleNFunc funcN;
169         void *func_argN;
170
171         uiButHandleRenameFunc rename_func;
172         void *rename_arg1;
173         void *rename_orig;
174         
175         uiBlockHandleFunc handle_func;
176         void *handle_func_arg;
177         int retval;
178
179         uiMenuHandleFunc butm_func;
180         void *butm_func_arg;
181         int a2;
182
183         wmOperatorType *optype;
184         int opcontext;
185         PointerRNA *opptr;
186
187         PointerRNA rnapoin;
188         PropertyRNA *rnaprop;
189
190         bContextStore *context;
191
192         char undostr[512];
193
194         int autokey;
195 } uiAfterFunc;
196
197 static int ui_but_contains_pt(uiBut *but, int mx, int my);
198 static int ui_mouse_inside_button(ARegion *ar, uiBut *but, int x, int y);
199 static void button_activate_state(bContext *C, uiBut *but, uiHandleButtonState state);
200 static int ui_handler_region_menu(bContext *C, wmEvent *event, void *userdata);
201 static void ui_handle_button_activate(bContext *C, ARegion *ar, uiBut *but, uiButtonActivateType type);
202 static void button_timers_tooltip_remove(bContext *C, uiBut *but);
203
204 /* ******************** menu navigation helpers ************** */
205
206 static int ui_but_editable(uiBut *but)
207 {
208         return ELEM5(but->type, LABEL, SEPR, ROUNDBOX, LISTBOX, PROGRESSBAR);
209 }
210
211 static uiBut *ui_but_prev(uiBut *but)
212 {
213         while(but->prev) {
214                 but= but->prev;
215                 if(!ui_but_editable(but)) return but;
216         }
217         return NULL;
218 }
219
220 static uiBut *ui_but_next(uiBut *but)
221 {
222         while(but->next) {
223                 but= but->next;
224                 if(!ui_but_editable(but)) return but;
225         }
226         return NULL;
227 }
228
229 static uiBut *ui_but_first(uiBlock *block)
230 {
231         uiBut *but;
232         
233         but= block->buttons.first;
234         while(but) {
235                 if(!ui_but_editable(but)) return but;
236                 but= but->next;
237         }
238         return NULL;
239 }
240
241 static uiBut *ui_but_last(uiBlock *block)
242 {
243         uiBut *but;
244         
245         but= block->buttons.last;
246         while(but) {
247                 if(!ui_but_editable(but)) return but;
248                 but= but->prev;
249         }
250         return NULL;
251 }
252
253 static int ui_is_a_warp_but(uiBut *but)
254 {
255         if(U.uiflag & USER_CONTINUOUS_MOUSE)
256                 if(ELEM3(but->type, NUM, NUMABS, HSVCIRCLE))
257                         return TRUE;
258
259         return FALSE;
260 }
261
262 /* file selectors are exempt from utf-8 checks */
263 static int ui_is_utf8_but(uiBut *but)
264 {
265         if (but->rnaprop) {
266                 const int subtype= RNA_property_subtype(but->rnaprop);
267                 return !(ELEM3(subtype, PROP_FILEPATH, PROP_DIRPATH, PROP_FILENAME));
268         }
269         else {
270                 return !(but->flag & UI_BUT_NO_UTF8);
271         }
272 }
273
274 /* ********************** button apply/revert ************************/
275
276 static ListBase UIAfterFuncs = {NULL, NULL};
277
278 static void ui_apply_but_func(bContext *C, uiBut *but)
279 {
280         uiAfterFunc *after;
281         uiBlock *block= but->block;
282
283         /* these functions are postponed and only executed after all other
284          * handling is done, i.e. menus are closed, in order to avoid conflicts
285          * with these functions removing the buttons we are working with */
286
287         if(but->func || but->funcN || block->handle_func || but->rename_func || (but->type == BUTM && block->butm_func) || but->optype || but->rnaprop) {
288                 after= MEM_callocN(sizeof(uiAfterFunc), "uiAfterFunc");
289
290                 if(but->func && ELEM(but, but->func_arg1, but->func_arg2)) {
291                         /* exception, this will crash due to removed button otherwise */
292                         but->func(C, but->func_arg1, but->func_arg2);
293                 }
294                 else
295                         after->func= but->func;
296
297                 after->func_arg1= but->func_arg1;
298                 after->func_arg2= but->func_arg2;
299                 after->func_arg3= but->func_arg3;
300
301                 after->funcN= but->funcN;
302                 after->func_argN= MEM_dupallocN(but->func_argN);
303
304                 after->rename_func= but->rename_func;
305                 after->rename_arg1= but->rename_arg1;
306                 after->rename_orig= but->rename_orig; /* needs free! */
307                 
308                 after->handle_func= block->handle_func;
309                 after->handle_func_arg= block->handle_func_arg;
310                 after->retval= but->retval;
311
312                 if(but->type == BUTM) {
313                         after->butm_func= block->butm_func;
314                         after->butm_func_arg= block->butm_func_arg;
315                         after->a2= but->a2;
316                 }
317
318                 after->optype= but->optype;
319                 after->opcontext= but->opcontext;
320                 after->opptr= but->opptr;
321
322                 after->rnapoin= but->rnapoin;
323                 after->rnaprop= but->rnaprop;
324
325                 if(but->context)
326                         after->context= CTX_store_copy(but->context);
327
328                 but->optype= NULL;
329                 but->opcontext= 0;
330                 but->opptr= NULL;
331
332                 BLI_addtail(&UIAfterFuncs, after);
333         }
334 }
335
336 static void ui_apply_autokey_undo(bContext *C, uiBut *but)
337 {
338         Scene *scene= CTX_data_scene(C);
339         uiAfterFunc *after;
340
341         if(but->flag & UI_BUT_UNDO) {
342                 const char *str= NULL;
343
344                 /* define which string to use for undo */
345                 if ELEM(but->type, LINK, INLINK) str= "Add button link";
346                 else if ELEM(but->type, MENU, ICONTEXTROW) str= but->drawstr;
347                 else if(but->drawstr[0]) str= but->drawstr;
348                 else str= but->tip;
349
350                 /* fallback, else we dont get an undo! */
351                 if(str == NULL || str[0] == '\0') {
352                         str= "Unknown Action";
353                 }
354
355                 /* delayed, after all other funcs run, popups are closed, etc */
356                 after= MEM_callocN(sizeof(uiAfterFunc), "uiAfterFunc");
357                 BLI_strncpy(after->undostr, str, sizeof(after->undostr));
358                 BLI_addtail(&UIAfterFuncs, after);
359         }
360
361         /* try autokey */
362         ui_but_anim_autokey(C, but, scene, scene->r.cfra);
363 }
364
365 static void ui_apply_but_funcs_after(bContext *C)
366 {
367         uiAfterFunc *afterf, after;
368         PointerRNA opptr;
369         ListBase funcs;
370
371         /* copy to avoid recursive calls */
372         funcs= UIAfterFuncs;
373         UIAfterFuncs.first= UIAfterFuncs.last= NULL;
374
375         for(afterf=funcs.first; afterf; afterf=after.next) {
376                 after= *afterf; /* copy to avoid memleak on exit() */
377                 BLI_freelinkN(&funcs, afterf);
378
379                 if(after.context)
380                         CTX_store_set(C, after.context);
381
382                 if(after.opptr) {
383                         /* free in advance to avoid leak on exit */
384                         opptr= *after.opptr,
385                         MEM_freeN(after.opptr);
386                 }
387
388                 if(after.optype)
389                         WM_operator_name_call(C, after.optype->idname, after.opcontext, (after.opptr)? &opptr: NULL);
390
391                 if(after.opptr)
392                         WM_operator_properties_free(&opptr);
393
394                 if(after.rnapoin.data)
395                         RNA_property_update(C, &after.rnapoin, after.rnaprop);
396
397                 if(after.context) {
398                         CTX_store_set(C, NULL);
399                         CTX_store_free(after.context);
400                 }
401
402                 if(after.func)
403                         after.func(C, after.func_arg1, after.func_arg2);
404                 if(after.funcN)
405                         after.funcN(C, after.func_argN, after.func_arg2);
406                 if(after.func_argN)
407                         MEM_freeN(after.func_argN);
408                 
409                 if(after.handle_func)
410                         after.handle_func(C, after.handle_func_arg, after.retval);
411                 if(after.butm_func)
412                         after.butm_func(C, after.butm_func_arg, after.a2);
413                 
414                 if(after.rename_func)
415                         after.rename_func(C, after.rename_arg1, after.rename_orig);
416                 if(after.rename_orig)
417                         MEM_freeN(after.rename_orig);
418                 
419                 if(after.undostr[0])
420                         ED_undo_push(C, after.undostr);
421         }
422 }
423
424 static void ui_apply_but_BUT(bContext *C, uiBut *but, uiHandleButtonData *data)
425 {
426         ui_apply_but_func(C, but);
427
428         data->retval= but->retval;
429         data->applied= 1;
430 }
431
432 static void ui_apply_but_BUTM(bContext *C, uiBut *but, uiHandleButtonData *data)
433 {
434         ui_set_but_val(but, but->hardmin);
435         ui_apply_but_func(C, but);
436
437         data->retval= but->retval;
438         data->applied= 1;
439 }
440
441 static void ui_apply_but_BLOCK(bContext *C, uiBut *but, uiHandleButtonData *data)
442 {
443         if(ELEM3(but->type, MENU, ICONROW, ICONTEXTROW))
444                 ui_set_but_val(but, data->value);
445
446         ui_check_but(but);
447         ui_apply_but_func(C, but);
448         data->retval= but->retval;
449         data->applied= 1;
450 }
451
452 static void ui_apply_but_TOG(bContext *C, uiBut *but, uiHandleButtonData *data)
453 {
454         double value;
455         int w, lvalue, push;
456         
457         /* local hack... */
458         if(but->type==BUT_TOGDUAL && data->togdual) {
459                 if(but->pointype==SHO)
460                         but->poin += 2;
461                 else if(but->pointype==INT)
462                         but->poin += 4;
463         }
464         
465         value= ui_get_but_val(but);
466         lvalue= (int)value;
467         
468         if(but->bit) {
469                 w= BTST(lvalue, but->bitnr);
470                 if(w) lvalue = BCLR(lvalue, but->bitnr);
471                 else lvalue = BSET(lvalue, but->bitnr);
472                 
473                 if(but->type==TOGR) {
474                         if(!data->togonly) {
475                                 lvalue= 1<<(but->bitnr);
476         
477                                 ui_set_but_val(but, (double)lvalue);
478                         }
479                         else {
480                                 if(lvalue==0) lvalue= 1<<(but->bitnr);
481                         }
482                 }
483                 
484                 ui_set_but_val(but, (double)lvalue);
485                 if(but->type==ICONTOG || but->type==ICONTOGN) ui_check_but(but);
486         }
487         else {
488                 
489                 if(value==0.0) push= 1; 
490                 else push= 0;
491                 
492                 if(ELEM3(but->type, TOGN, ICONTOGN, OPTIONN)) push= !push;
493                 ui_set_but_val(but, (double)push);
494                 if(but->type==ICONTOG || but->type==ICONTOGN) ui_check_but(but);                
495         }
496         
497         /* end local hack... */
498         if(but->type==BUT_TOGDUAL && data->togdual) {
499                 if(but->pointype==SHO)
500                         but->poin -= 2;
501                 else if(but->pointype==INT)
502                         but->poin -= 4;
503         }
504         
505         ui_apply_but_func(C, but);
506
507         data->retval= but->retval;
508         data->applied= 1;
509 }
510
511 static void ui_apply_but_ROW(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data)
512 {
513         uiBut *bt;
514         
515         ui_set_but_val(but, but->hardmax);
516         
517         /* states of other row buttons */
518         for(bt= block->buttons.first; bt; bt= bt->next)
519                 if(bt!=but && bt->poin==but->poin && ELEM(bt->type, ROW, LISTROW))
520                         ui_check_but(bt);
521         
522         ui_apply_but_func(C, but);
523
524         data->retval= but->retval;
525         data->applied= 1;
526 }
527
528 static void ui_apply_but_TEX(bContext *C, uiBut *but, uiHandleButtonData *data)
529 {
530         if(!data->str)
531                 return;
532
533         ui_set_but_string(C, but, data->str);
534         ui_check_but(but);
535
536         /* give butfunc the original text too */
537         /* feature used for bone renaming, channels, etc */
538         /* afterfunc frees origstr */
539         but->rename_orig= data->origstr;
540         data->origstr= NULL;
541         ui_apply_but_func(C, but);
542
543         data->retval= but->retval;
544         data->applied= 1;
545 }
546
547 static void ui_apply_but_NUM(bContext *C, uiBut *but, uiHandleButtonData *data)
548 {
549         if(data->str) {
550                 if(ui_set_but_string(C, but, data->str)) {
551                         data->value= ui_get_but_val(but);
552                 }
553                 else {
554                         data->cancel= 1;
555                         return;
556                 }
557         }
558         else
559                 ui_set_but_val(but, data->value);
560
561         ui_check_but(but);
562         ui_apply_but_func(C, but);
563
564         data->retval= but->retval;
565         data->applied= 1;
566 }
567
568 static void ui_apply_but_TOG3(bContext *C, uiBut *but, uiHandleButtonData *data)
569
570         if(but->pointype==SHO ) {
571                 short *sp= (short *)but->poin;
572                 
573                 if( BTST(sp[1], but->bitnr)) {
574                         sp[1]= BCLR(sp[1], but->bitnr);
575                         sp[0]= BCLR(sp[0], but->bitnr);
576                 }
577                 else if( BTST(sp[0], but->bitnr)) {
578                         sp[1]= BSET(sp[1], but->bitnr);
579                 } else {
580                         sp[0]= BSET(sp[0], but->bitnr);
581                 }
582         }
583         else {
584                 if( BTST(*(but->poin+2), but->bitnr)) {
585                         *(but->poin+2)= BCLR(*(but->poin+2), but->bitnr);
586                         *(but->poin)= BCLR(*(but->poin), but->bitnr);
587                 }
588                 else if( BTST(*(but->poin), but->bitnr)) {
589                         *(but->poin+2)= BSET(*(but->poin+2), but->bitnr);
590                 } else {
591                         *(but->poin)= BSET(*(but->poin), but->bitnr);
592                 }
593         }
594         
595         ui_check_but(but);
596         ui_apply_but_func(C, but);
597         data->retval= but->retval;
598         data->applied= 1;
599 }
600
601 static void ui_apply_but_VEC(bContext *C, uiBut *but, uiHandleButtonData *data)
602 {
603         ui_set_but_vectorf(but, data->vec);
604         ui_check_but(but);
605         ui_apply_but_func(C, but);
606
607         data->retval= but->retval;
608         data->applied= 1;
609 }
610
611 static void ui_apply_but_COLORBAND(bContext *C, uiBut *but, uiHandleButtonData *data)
612 {
613         ui_apply_but_func(C, but);
614         data->retval= but->retval;
615         data->applied= 1;
616 }
617
618 static void ui_apply_but_CURVE(bContext *C, uiBut *but, uiHandleButtonData *data)
619 {
620         ui_apply_but_func(C, but);
621         data->retval= but->retval;
622         data->applied= 1;
623 }
624
625 static void ui_apply_but_IDPOIN(bContext *C, uiBut *but, uiHandleButtonData *data)
626 {
627         ui_set_but_string(C, but, data->str);
628         ui_check_but(but);
629         ui_apply_but_func(C, but);
630         data->retval= but->retval;
631         data->applied= 1;
632 }
633
634 #ifdef WITH_INTERNATIONAL
635 static void ui_apply_but_CHARTAB(bContext *C, uiBut *but, uiHandleButtonData *data)
636 {
637         ui_apply_but_func(C, but);
638         data->retval= but->retval;
639         data->applied= 1;
640 }
641 #endif
642
643 /* ****************** drag drop code *********************** */
644
645 static int ui_but_mouse_inside_icon(uiBut *but, ARegion *ar, wmEvent *event)
646 {
647         rcti rect;
648         int x= event->x, y= event->y; 
649         
650         ui_window_to_block(ar, but->block, &x, &y);
651         
652         rect.xmin= but->x1; rect.xmax= but->x2;
653         rect.ymin= but->y1; rect.ymax= but->y2;
654         
655         if(but->imb); /* use button size itself */
656         else if(but->flag & UI_ICON_LEFT) {
657                 rect.xmax= rect.xmin + (rect.ymax-rect.ymin);
658         }
659         else {
660                 int delta= (rect.xmax-rect.xmin) - (rect.ymax-rect.ymin);
661                 rect.xmin += delta/2;
662                 rect.xmax -= delta/2;
663         }
664         
665         return BLI_in_rcti(&rect, x, y);
666 }
667
668 static int ui_but_start_drag(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
669 {
670         /* prevent other WM gestures to start while we try to drag */
671         WM_gestures_remove(C);
672
673         if( ABS(data->dragstartx - event->x) + ABS(data->dragstarty - event->y) > U.dragthreshold ) {
674                 wmDrag *drag;
675                 
676                 button_activate_state(C, but, BUTTON_STATE_EXIT);
677                 data->cancel= 1;
678                 
679                 drag= WM_event_start_drag(C, but->icon, but->dragtype, but->dragpoin, ui_get_but_val(but));
680                 if(but->imb)
681                         WM_event_drag_image(drag, but->imb, but->imb_scale, but->x2-but->x1, but->y2-but->y1);
682                 return 1;
683         }
684         
685         return 0;
686 }
687
688 /* ********************** linklines *********************** */
689
690 static void ui_delete_active_linkline(uiBlock *block)
691 {
692         uiBut *but;
693         uiLink *link;
694         uiLinkLine *line, *nline;
695         int a, b;
696         
697         but= block->buttons.first;
698         while(but) {
699                 if(but->type==LINK && but->link) {
700                         line= but->link->lines.first;
701                         while(line) {
702                                 
703                                 nline= line->next;
704                                 
705                                 if(line->flag & UI_SELECT) {
706                                         BLI_remlink(&but->link->lines, line);
707                                         
708                                         link= line->from->link;
709                                         
710                                         /* are there more pointers allowed? */
711                                         if(link->ppoin) {
712                                                 
713                                                 if(*(link->totlink)==1) {
714                                                         *(link->totlink)= 0;
715                                                         MEM_freeN(*(link->ppoin));
716                                                         *(link->ppoin)= NULL;
717                                                 }
718                                                 else {
719                                                         b= 0;
720                                                         for(a=0; a< (*(link->totlink)); a++) {
721                                                                 
722                                                                 if( (*(link->ppoin))[a] != line->to->poin ) {
723                                                                         (*(link->ppoin))[b]= (*(link->ppoin))[a];
724                                                                         b++;
725                                                                 }
726                                                         }       
727                                                         (*(link->totlink))--;
728                                                 }
729                                         }
730                                         else {
731                                                 *(link->poin)= NULL;
732                                         }
733                                         
734                                         MEM_freeN(line);
735                                 }
736                                 line= nline;
737                         }
738                 }
739                 but= but->next;
740         }
741 }
742
743
744 static uiLinkLine *ui_is_a_link(uiBut *from, uiBut *to)
745 {
746         uiLinkLine *line;
747         uiLink *link;
748         
749         link= from->link;
750         if(link) {
751                 line= link->lines.first;
752                 while(line) {
753                         if(line->from==from && line->to==to) return line;
754                         line= line->next;
755                 }
756         }
757         return NULL;
758 }
759
760 /* XXX BAD BAD HACK, fixme later **************** */
761 /* Try to add an AND Controller between the sensor and the actuator logic bricks and to connect them all */
762 static void ui_add_smart_controller(bContext *C, uiBut *from, uiBut *to)
763 {
764         Object *ob= NULL;
765         bSensor *sens_iter;
766         bActuator *act_to, *act_iter;
767         bController *cont;
768         bController ***sens_from_links;
769         uiBut *tmp_but;
770
771         uiLink *link= from->link;
772
773         if(link->ppoin)
774                 sens_from_links= (bController ***)(link->ppoin);
775         else return;
776
777         act_to = (bActuator *)(to->poin);
778
779         /* (1) get the object */
780         CTX_DATA_BEGIN(C, Object*, ob_iter, selected_editable_objects) {
781                 for (sens_iter= ob_iter->sensors.first; sens_iter; sens_iter= sens_iter->next)
782                 {
783                         if (&(sens_iter->links) == sens_from_links) {
784                                 ob= ob_iter;
785                                 break;
786                         }
787                 }
788                 if (ob) break;
789         } CTX_DATA_END;
790
791         if(!ob) return;
792
793         /* (2) check if the sensor and the actuator are from the same object */
794         for (act_iter= ob->actuators.first; act_iter; act_iter= (bActuator *)act_iter->next) {
795                 if (act_iter == act_to)
796                         break;
797         }
798
799         // only works if the sensor and the actuator are from the same object
800         if(!act_iter) return;
801
802         /* (3) add a new controller */
803         if (WM_operator_name_call(C, "LOGIC_OT_controller_add", WM_OP_EXEC_DEFAULT, NULL) & OPERATOR_FINISHED) {
804                 cont = (bController *)ob->controllers.last;
805
806                 /* (4) link the sensor->controller->actuator */
807                 tmp_but = MEM_callocN(sizeof(uiBut), "uiBut");
808                 uiSetButLink(tmp_but, (void **)&cont, (void ***)&(cont->links), &(cont->totlinks), from->link->tocode, (int)to->hardmin);
809                 tmp_but->hardmin= from->link->tocode;
810                 tmp_but->poin= (char *)cont;
811
812                 tmp_but->type= INLINK;
813                 ui_add_link(C, from, tmp_but);
814
815                 tmp_but->type= LINK;
816                 ui_add_link(C, tmp_but, to);
817
818                 /* (5) garbage collection */
819                 MEM_freeN(tmp_but->link);
820                 MEM_freeN(tmp_but);
821         }
822 }
823
824 static void ui_add_link(bContext *C, uiBut *from, uiBut *to)
825 {
826         /* in 'from' we have to add a link to 'to' */
827         uiLink *link;
828         uiLinkLine *line;
829         void **oldppoin;
830         int a;
831         
832         if( (line= ui_is_a_link(from, to)) ) {
833                 line->flag |= UI_SELECT;
834                 ui_delete_active_linkline(from->block);
835                 return;
836         }
837
838         if (from->type==INLINK && to->type==INLINK) {
839                 return;
840         }
841         else if (from->type==LINK && to->type==INLINK) {
842                 if( from->link->tocode != (int)to->hardmin ) {
843                         ui_add_smart_controller(C, from, to);
844                         return;
845                 }
846         }
847         else if(from->type==INLINK && to->type==LINK) {
848                 if( to->link->tocode == (int)from->hardmin ) {
849                         return;
850                 }
851         }
852         
853         link= from->link;
854         
855         /* are there more pointers allowed? */
856         if(link->ppoin) {
857                 oldppoin= *(link->ppoin);
858                 
859                 (*(link->totlink))++;
860                 *(link->ppoin)= MEM_callocN( *(link->totlink)*sizeof(void *), "new link");
861                 
862                 for(a=0; a< (*(link->totlink))-1; a++) {
863                         (*(link->ppoin))[a]= oldppoin[a];
864                 }
865                 (*(link->ppoin))[a]= to->poin;
866                 
867                 if(oldppoin) MEM_freeN(oldppoin);
868         }
869         else {
870                 *(link->poin)= to->poin;
871         }
872         
873 }
874
875
876 static void ui_apply_but_LINK(bContext *C, uiBut *but, uiHandleButtonData *data)
877 {
878         ARegion *ar= CTX_wm_region(C);
879         uiBut *bt;
880         
881         for(bt= but->block->buttons.first; bt; bt= bt->next) {
882                 if( ui_mouse_inside_button(ar, bt, but->linkto[0]+ar->winrct.xmin, but->linkto[1]+ar->winrct.ymin) )
883                         break;
884         }
885         if(bt && bt!=but) {
886                 if (!ELEM(bt->type, LINK, INLINK) || !ELEM(but->type, LINK, INLINK))
887                         return;
888                 
889                 if(but->type==LINK) ui_add_link(C, but, bt);
890                 else ui_add_link(C, bt, but);
891
892                 ui_apply_but_func(C, but);
893                 data->retval= but->retval;
894         }
895         data->applied= 1;
896 }
897
898 static void ui_apply_but_IMAGE(bContext *C, uiBut *but, uiHandleButtonData *data)
899 {
900         ui_apply_but_func(C, but);
901         data->retval= but->retval;
902         data->applied= 1;
903 }
904
905 static void ui_apply_but_HISTOGRAM(bContext *C, uiBut *but, uiHandleButtonData *data)
906 {
907         ui_apply_but_func(C, but);
908         data->retval= but->retval;
909         data->applied= 1;
910 }
911
912 static void ui_apply_but_WAVEFORM(bContext *C, uiBut *but, uiHandleButtonData *data)
913 {
914         ui_apply_but_func(C, but);
915         data->retval= but->retval;
916         data->applied= 1;
917 }
918
919
920 static void ui_apply_button(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, int interactive)
921 {
922         char *editstr;
923         double *editval;
924         float *editvec;
925         ColorBand *editcoba;
926         CurveMapping *editcumap;
927
928         data->retval= 0;
929
930         /* if we cancel and have not applied yet, there is nothing to do,
931          * otherwise we have to restore the original value again */
932         if(data->cancel) {
933                 if(!data->applied)
934                         return;
935
936                 if(data->str) MEM_freeN(data->str);
937                 data->str= data->origstr;
938                 data->origstr= NULL;
939                 data->value= data->origvalue;
940                 data->origvalue= 0.0;
941                 VECCOPY(data->vec, data->origvec);
942                 data->origvec[0]= data->origvec[1]= data->origvec[2]= 0.0f;
943         }
944         else {
945                 /* we avoid applying interactive edits a second time
946                  * at the end with the appliedinteractive flag */
947                 if(interactive)
948                         data->appliedinteractive= 1;
949                 else if(data->appliedinteractive)
950                         return;
951         }
952
953         /* ensures we are writing actual values */
954         editstr= but->editstr;
955         editval= but->editval;
956         editvec= but->editvec;
957         editcoba= but->editcoba;
958         editcumap= but->editcumap;
959         but->editstr= NULL;
960         but->editval= NULL;
961         but->editvec= NULL;
962         but->editcoba= NULL;
963         but->editcumap= NULL;
964
965         /* handle different types */
966         switch(but->type) {
967                 case BUT:
968                         ui_apply_but_BUT(C, but, data);
969                         break;
970                 case TEX:
971                 case SEARCH_MENU:
972                         ui_apply_but_TEX(C, but, data);
973                         break;
974                 case TOGBUT: 
975                 case TOG: 
976                 case TOGR: 
977                 case ICONTOG:
978                 case ICONTOGN:
979                 case TOGN:
980                 case BUT_TOGDUAL:
981                 case OPTION:
982                 case OPTIONN:
983                         ui_apply_but_TOG(C, but, data);
984                         break;
985                 case ROW:
986                 case LISTROW:
987                         ui_apply_but_ROW(C, block, but, data);
988                         break;
989                 case SCROLL:
990                 case NUM:
991                 case NUMABS:
992                 case SLI:
993                 case NUMSLI:
994                         ui_apply_but_NUM(C, but, data);
995                         break;
996                 case HSVSLI:
997                         break;
998                 case TOG3:      
999                         ui_apply_but_TOG3(C, but, data);
1000                         break;
1001                 case MENU:
1002                 case ICONROW:
1003                 case ICONTEXTROW:
1004                 case BLOCK:
1005                 case PULLDOWN:
1006                 case COL:
1007                         ui_apply_but_BLOCK(C, but, data);
1008                         break;
1009                 case BUTM:
1010                         ui_apply_but_BUTM(C, but, data);
1011                         break;
1012                 case BUT_NORMAL:
1013                 case HSVCUBE:
1014                 case HSVCIRCLE:
1015                         ui_apply_but_VEC(C, but, data);
1016                         break;
1017                 case BUT_COLORBAND:
1018                         ui_apply_but_COLORBAND(C, but, data);
1019                         break;
1020                 case BUT_CURVE:
1021                         ui_apply_but_CURVE(C, but, data);
1022                         break;
1023                 case IDPOIN:
1024                         ui_apply_but_IDPOIN(C, but, data);
1025                         break;
1026 #ifdef WITH_INTERNATIONAL
1027                 case CHARTAB:
1028                         ui_apply_but_CHARTAB(C, but, data);
1029                         break;
1030 #endif
1031                 case KEYEVT:
1032                 case HOTKEYEVT:
1033                         ui_apply_but_BUT(C, but, data);
1034                         break;
1035                 case LINK:
1036                 case INLINK:
1037                         ui_apply_but_LINK(C, but, data);
1038                         break;
1039                 case BUT_IMAGE: 
1040                         ui_apply_but_IMAGE(C, but, data);
1041                         break;
1042                 case HISTOGRAM: 
1043                         ui_apply_but_HISTOGRAM(C, but, data);
1044                         break;
1045                 case WAVEFORM:
1046                         ui_apply_but_WAVEFORM(C, but, data);
1047                         break;
1048                 default:
1049                         break;
1050         }
1051
1052         but->editstr= editstr;
1053         but->editval= editval;
1054         but->editvec= editvec;
1055         but->editcoba= editcoba;
1056         but->editcumap= editcumap;
1057 }
1058
1059 /* ******************* drop event ********************  */
1060
1061 /* only call if event type is EVT_DROP */
1062 static void ui_but_drop(bContext *C, wmEvent *event, uiBut *but, uiHandleButtonData *data)
1063 {
1064         wmDrag *wmd;
1065         ListBase *drags= event->customdata; /* drop event type has listbase customdata by default */
1066         
1067         for(wmd= drags->first; wmd; wmd= wmd->next) {
1068                 if(wmd->type==WM_DRAG_ID) {
1069                         /* align these types with UI_but_active_drop_name */
1070                         if(ELEM3(but->type, TEX, IDPOIN, SEARCH_MENU)) {
1071                                 ID *id= (ID *)wmd->poin;
1072                                 
1073                                 if(but->poin==NULL && but->rnapoin.data==NULL) {}
1074                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
1075                                 BLI_strncpy(data->str, id->name+2, data->maxlen);
1076                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1077                         }
1078                 }
1079         }
1080         
1081 }
1082
1083 /* ******************* copy and paste ********************  */
1084
1085 /* c = copy, v = paste */
1086 static void ui_but_copy_paste(bContext *C, uiBut *but, uiHandleButtonData *data, char mode)
1087 {
1088         static ColorBand but_copypaste_coba = {0};
1089         char buf[UI_MAX_DRAW_STR+1]= {0};
1090         double val;
1091         
1092         if(mode=='v' && but->lock)
1093                 return;
1094
1095         if(mode=='v') {
1096                 /* extract first line from clipboard in case of multi-line copies */
1097                 char *p, *pbuf= WM_clipboard_text_get(0);
1098                 p= pbuf;
1099                 if(p) {
1100                         int i = 0;
1101                         while (*p && *p!='\r' && *p!='\n' && i<UI_MAX_DRAW_STR) {
1102                                 buf[i++]=*p;
1103                                 p++;
1104                         }
1105                         buf[i]= 0;
1106                         MEM_freeN(pbuf);
1107                 }
1108         }
1109         
1110         /* numeric value */
1111         if ELEM4(but->type, NUM, NUMABS, NUMSLI, HSVSLI) {
1112                 
1113                 if(but->poin==NULL && but->rnapoin.data==NULL);
1114                 else if(mode=='c') {
1115                         if(ui_is_but_float(but))
1116                                 BLI_snprintf(buf, sizeof(buf), "%f", ui_get_but_val(but));
1117                         else
1118                                 BLI_snprintf(buf, sizeof(buf), "%d", (int)ui_get_but_val(but));
1119
1120                         WM_clipboard_text_set(buf, 0);
1121                 }
1122                 else {
1123                         if (sscanf(buf, " %lf ", &val) == 1) {
1124                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
1125                                 data->value= val;
1126                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1127                         }
1128                 }
1129         }
1130
1131         /* RGB triple */
1132         else if(but->type==COL) {
1133                 float rgb[3];
1134                 
1135                 if(but->poin==NULL && but->rnapoin.data==NULL);
1136                 else if(mode=='c') {
1137
1138                         ui_get_but_vectorf(but, rgb);
1139                         BLI_snprintf(buf, sizeof(buf), "[%f, %f, %f]", rgb[0], rgb[1], rgb[2]);
1140                         WM_clipboard_text_set(buf, 0);
1141                         
1142                 }
1143                 else {
1144                         if (sscanf(buf, "[%f, %f, %f]", &rgb[0], &rgb[1], &rgb[2]) == 3) {
1145                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
1146                                 ui_set_but_vectorf(but, rgb);
1147                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1148                         }
1149                 }
1150         }
1151
1152         /* text/string and ID data */
1153         else if(ELEM3(but->type, TEX, IDPOIN, SEARCH_MENU)) {
1154                 uiHandleButtonData *active_data= but->active;
1155
1156                 if(but->poin==NULL && but->rnapoin.data==NULL);
1157                 else if(mode=='c') {
1158                         button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
1159                         BLI_strncpy(buf, active_data->str, UI_MAX_DRAW_STR);
1160                         WM_clipboard_text_set(active_data->str, 0);
1161                         active_data->cancel= 1;
1162                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1163                 }
1164                 else {
1165                         button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
1166                         BLI_strncpy(active_data->str, buf, active_data->maxlen);
1167                         if(but->type == SEARCH_MENU) {
1168                                 /* else uiSearchboxData.active member is not updated [#26856] */
1169                                 ui_searchbox_update(C, data->searchbox, but, 1);
1170                         }
1171                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1172                 }
1173         }
1174         /* colorband (not supported by system clipboard) */
1175         else if(but->type==BUT_COLORBAND) {
1176                 if(mode=='c') {
1177                         if(but->poin==NULL)
1178                                 return;
1179
1180                         memcpy(&but_copypaste_coba, but->poin, sizeof(ColorBand));
1181                 }
1182                 else {
1183                         if(but_copypaste_coba.tot==0)
1184                                 return;
1185
1186                         if(!but->poin)
1187                                 but->poin= MEM_callocN(sizeof(ColorBand), "colorband");
1188
1189                         button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
1190                         memcpy(data->coba, &but_copypaste_coba, sizeof(ColorBand) );
1191                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1192                 }
1193         }
1194         /* operator button (any type) */
1195         else if (but->optype) {
1196                 if(mode=='c') {
1197                         PointerRNA *opptr;
1198                         char *str;
1199                         opptr= uiButGetOperatorPtrRNA(but); /* allocated when needed, the button owns it */
1200
1201                         str= WM_operator_pystring(C, but->optype, opptr, 0);
1202
1203                         WM_clipboard_text_set(str, 0);
1204
1205                         MEM_freeN(str);
1206                 }
1207         }
1208 }
1209
1210 /* ************* in-button text selection/editing ************* */
1211
1212 /* return 1 if char ch is special character, otherwise return 0 */
1213 static short test_special_char(char ch)
1214 {
1215         switch(ch) {
1216                 case '\\':
1217                 case '/':
1218                 case '~':
1219                 case '!':
1220                 case '@':
1221                 case '#':
1222                 case '$':
1223                 case '%':
1224                 case '^':
1225                 case '&':
1226                 case '*':
1227                 case '(':
1228                 case ')':
1229                 case '+':
1230                 case '=':
1231                 case '{':
1232                 case '}':
1233                 case '[':
1234                 case ']':
1235                 case ':':
1236                 case ';':
1237                 case '\'':
1238                 case '\"': // " - an extra closing one for Aligorith's text editor
1239                 case '<':
1240                 case '>':
1241                 case ',':
1242                 case '.':
1243                 case '?':
1244                 case '_':
1245                 case '-':
1246                 case ' ':
1247                         return 1;
1248                         break;
1249                 default:
1250                         break;
1251         }
1252         return 0;
1253 }
1254
1255 static int ui_textedit_step_next_utf8(const char *str, size_t maxlen, short *pos)
1256 {
1257         const char *str_end= str + (maxlen + 1);
1258         const char *str_pos= str + (*pos);
1259         const char *str_next= BLI_str_find_next_char_utf8(str_pos, str_end);
1260         if (str_next) {
1261                 (*pos) += (str_next - str_pos);
1262                 if((*pos) > maxlen) (*pos)= maxlen;
1263                 return TRUE;
1264         }
1265
1266         return FALSE;
1267 }
1268
1269 static int ui_textedit_step_prev_utf8(const char *str, size_t UNUSED(maxlen), short *pos)
1270 {
1271         if((*pos) > 0) {
1272                 const char *str_pos= str + (*pos);
1273                 const char *str_prev= BLI_str_find_prev_char_utf8(str, str_pos);
1274                 if (str_prev) {
1275                         (*pos) -= (str_pos - str_prev);
1276                         return TRUE;
1277                 }
1278         }
1279
1280         return FALSE;
1281 }
1282
1283 static void ui_textedit_step_utf8(const char *str, size_t maxlen,
1284                                   short *pos, const char direction,
1285                                   const short do_jump, const short do_all)
1286 {
1287         const short pos_prev= *pos;
1288
1289         if(direction) { /* right*/
1290                 if(do_jump) {
1291                         /* jump between special characters (/,\,_,-, etc.),
1292                          * look at function test_special_char() for complete
1293                          * list of special character, ctr -> */
1294                         while((*pos) < maxlen) {
1295                                 if (ui_textedit_step_next_utf8(str, maxlen, pos)) {
1296                                         if(!do_all && test_special_char(str[(*pos)])) break;
1297                                 }
1298                                 else {
1299                                         break; /* unlikely but just incase */
1300                                 }
1301                         }
1302                 }
1303                 else {
1304                         ui_textedit_step_next_utf8(str, maxlen, pos);
1305                 }
1306         }
1307         else { /* left */
1308                 if(do_jump) {
1309                         /* left only: compensate for index/change in direction */
1310                         ui_textedit_step_prev_utf8(str, maxlen, pos);
1311
1312                         /* jump between special characters (/,\,_,-, etc.),
1313                          * look at function test_special_char() for complete
1314                          * list of special character, ctr -> */
1315                         while ((*pos) > 0) {
1316                                 if (ui_textedit_step_prev_utf8(str, maxlen, pos)) {
1317                                         if(!do_all && test_special_char(str[(*pos)])) break;
1318                                 }
1319                                 else {
1320                                         break;
1321                                 }
1322                         }
1323
1324                         /* left only: compensate for index/change in direction */
1325                         if(((*pos) != 0) && ABS(pos_prev - (*pos)) > 1) {
1326                                 ui_textedit_step_next_utf8(str, maxlen, pos);
1327                         }
1328                 }
1329                 else {
1330                         ui_textedit_step_prev_utf8(str, maxlen, pos);
1331                 }
1332         }
1333 }
1334
1335 static int ui_textedit_delete_selection(uiBut *but, uiHandleButtonData *data)
1336 {
1337         char *str= data->str;
1338         int len= strlen(str);
1339         int change= 0;
1340         if(but->selsta != but->selend && len) {
1341                 memmove( str+but->selsta, str+but->selend, (len - but->selend) + 1 );
1342                 change= 1;
1343         }
1344         
1345         but->pos = but->selend = but->selsta;
1346         return change;
1347 }
1348
1349 /* note, but->block->aspect is used here, when drawing button style is getting scaled too */
1350 static void ui_textedit_set_cursor_pos(uiBut *but, uiHandleButtonData *data, short x)
1351 {
1352         uiStyle *style= UI_GetStyle();  // XXX pass on as arg
1353         uiFontStyle *fstyle = &style->widget;
1354         int startx= but->x1;
1355         char *origstr;
1356
1357         uiStyleFontSet(fstyle);
1358
1359         if (fstyle->kerning==1) /* for BLF_width */
1360                 BLF_enable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
1361         
1362         origstr= MEM_callocN(sizeof(char)*data->maxlen, "ui_textedit origstr");
1363         
1364         BLI_strncpy(origstr, but->drawstr, data->maxlen);
1365         
1366         /* XXX solve generic */
1367         if(but->type==NUM || but->type==NUMSLI)
1368                 startx += (int)(0.5f*(but->y2 - but->y1));
1369         else if(ELEM(but->type, TEX, SEARCH_MENU)) {
1370                 startx += 5;
1371                 if (but->flag & UI_HAS_ICON)
1372                         startx += UI_DPI_ICON_SIZE;
1373         }
1374         
1375         /* mouse dragged outside the widget to the left */
1376         if (x < startx && but->ofs > 0) {       
1377                 short i= but->ofs;
1378
1379                 origstr[but->ofs] = 0;
1380                 
1381                 while (i > 0) {
1382                         if (ui_textedit_step_prev_utf8(origstr, but->ofs, &i)) {
1383                                 if (BLF_width(fstyle->uifont_id, origstr+i) > (startx - x)*0.25f) break;        // 0.25 == scale factor for less sensitivity
1384                         }
1385                         else {
1386                                 break; /* unlikely but possible */
1387                         }
1388                 }
1389                 but->ofs = i;
1390                 but->pos = but->ofs;
1391         }
1392         /* mouse inside the widget */
1393         else if (x >= startx) {
1394                 const float aspect_sqrt= sqrtf(but->block->aspect);
1395                 
1396                 but->pos= strlen(origstr)-but->ofs;
1397                 
1398                 /* XXX does not take zoom level into account */
1399                 while (startx + aspect_sqrt * BLF_width(fstyle->uifont_id, origstr+but->ofs) > x) {
1400                         if (but->pos <= 0) break;
1401                         if (ui_textedit_step_prev_utf8(origstr, but->ofs, &but->pos)) {
1402                                 origstr[but->pos+but->ofs] = 0;
1403                         }
1404                         else {
1405                                 break; /* unlikely but possible */
1406                         }
1407                 }
1408                 but->pos += but->ofs;
1409                 if(but->pos<0) but->pos= 0;
1410         }
1411         
1412         if (fstyle->kerning == 1)
1413                 BLF_disable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
1414         
1415         MEM_freeN(origstr);
1416 }
1417
1418 static void ui_textedit_set_cursor_select(uiBut *but, uiHandleButtonData *data, short x)
1419 {
1420         if (x > data->selstartx) data->selextend = EXTEND_RIGHT;
1421         else if (x < data->selstartx) data->selextend = EXTEND_LEFT;
1422
1423         ui_textedit_set_cursor_pos(but, data, x);
1424                                                 
1425         if (data->selextend == EXTEND_RIGHT) but->selend = but->pos;
1426         if (data->selextend == EXTEND_LEFT) but->selsta = but->pos;
1427
1428         ui_check_but(but);
1429 }
1430
1431 /* note: utf8 & ascii funcs should be merged */
1432 static int ui_textedit_type_utf8(uiBut *but, uiHandleButtonData *data, const char utf8_buf[6])
1433 {
1434         char *str;
1435         int len, x, changed= 0;
1436         size_t step= BLI_strnlen(utf8_buf, sizeof(utf8_buf));
1437
1438         str= data->str;
1439         len= strlen(str);
1440
1441         if(len-(but->selend - but->selsta)+1 <= data->maxlen) {
1442                 /* type over the current selection */
1443                 if ((but->selend - but->selsta) > 0)
1444                         changed= ui_textedit_delete_selection(but, data);
1445
1446                 len= strlen(str);
1447                 if(len+step < data->maxlen) {
1448                         for(x= data->maxlen; x>but->pos; x--)
1449                                 str[x]= str[x-step];
1450                         memcpy(&str[but->pos], utf8_buf, step * sizeof(char));
1451                         str[len+step]= '\0';
1452
1453                         but->pos += step;
1454                         changed= 1;
1455                 }
1456         }
1457
1458         return changed;
1459 }
1460
1461 static int ui_textedit_type_ascii(uiBut *but, uiHandleButtonData *data, char ascii)
1462 {
1463         char *str;
1464         int len, x, changed= 0;
1465
1466         str= data->str;
1467         len= strlen(str);
1468
1469         if(len-(but->selend - but->selsta)+1 <= data->maxlen) {
1470                 /* type over the current selection */
1471                 if ((but->selend - but->selsta) > 0)
1472                         changed= ui_textedit_delete_selection(but, data);
1473
1474                 len= strlen(str);
1475                 if(len+1 < data->maxlen) {
1476                         for(x= data->maxlen; x>but->pos; x--)
1477                                 str[x]= str[x-1];
1478                         str[but->pos]= ascii;
1479                         str[len+1]= '\0';
1480
1481                         but->pos++; 
1482                         changed= 1;
1483                 }
1484         }
1485
1486         return changed;
1487 }
1488
1489 static void ui_textedit_move(uiBut *but, uiHandleButtonData *data, int direction, int select, int jump, int jump_all)
1490 {
1491         const char *str= data->str;
1492         const int len= strlen(str);
1493         const int pos_prev= but->pos;
1494         const int has_sel= (but->selend - but->selsta) > 0;
1495
1496         /* special case, quit selection and set cursor */
1497         if (has_sel && !select) {
1498                 if (jump_all) {
1499                         but->selsta = but->selend= but->pos = direction ? len : 0;
1500                 }
1501                 else {
1502                         if (direction) {
1503                                 but->selsta = but->pos = but->selend;
1504                         }
1505                         else {
1506                                 but->pos = but->selend = but->selsta;
1507                         }
1508                 }
1509                 data->selextend = 0;
1510         }
1511         else {
1512                 ui_textedit_step_utf8(str, len, &but->pos, direction, jump, jump_all);
1513
1514                 if(select) {
1515                         /* existing selection */
1516                         if (has_sel) {
1517
1518                                 if(data->selextend == 0) {
1519                                         data->selextend= EXTEND_RIGHT;
1520                                 }
1521
1522                                 if (direction) {
1523                                         if (data->selextend == EXTEND_RIGHT) {
1524                                                 but->selend= but->pos;
1525                                         }
1526                                         else {
1527                                                 but->selsta= but->pos;
1528                                         }
1529                                 }
1530                                 else {
1531                                         if (data->selextend == EXTEND_LEFT) {
1532                                                 but->selsta= but->pos;
1533                                         }
1534                                         else {
1535                                                 but->selend= but->pos;
1536                                         }
1537                                 }
1538
1539                                 if (but->selend < but->selsta) {
1540                                         SWAP(short, but->selsta, but->selend);
1541                                         data->selextend= (data->selextend == EXTEND_RIGHT) ? EXTEND_LEFT : EXTEND_RIGHT;
1542                                 }
1543
1544                         } /* new selection */
1545                         else {
1546                                 if (direction) {
1547                                         data->selextend= EXTEND_RIGHT;
1548                                         but->selend= but->pos;
1549                                         but->selsta= pos_prev;
1550                                 }
1551                                 else {
1552                                         data->selextend= EXTEND_LEFT;
1553                                         but->selend= pos_prev;
1554                                         but->selsta= but->pos;
1555                                 }
1556                         }
1557                 }
1558         }
1559 }
1560
1561 static int ui_textedit_delete(uiBut *but, uiHandleButtonData *data, int direction, const int all, const int jump)
1562 {
1563         char *str= data->str;
1564         const int len= strlen(str);
1565
1566         int x, changed= 0;
1567
1568         if(all) {
1569                 if(len) changed=1;
1570                 str[0]= 0;
1571                 but->pos= 0;
1572         }
1573         else if(direction) { /* delete */
1574                 if ((but->selend - but->selsta) > 0) {
1575                         changed= ui_textedit_delete_selection(but, data);
1576                 }
1577                 else if(but->pos>=0 && but->pos<len) {
1578                         short pos= but->pos;
1579                         int step;
1580                         ui_textedit_step_utf8(str, len, &pos, direction, jump, all);
1581                         step= pos - but->pos;
1582                         for(x=but->pos; x<len; x++)
1583                                 str[x]= str[x+step];
1584                         str[len-step]='\0';
1585                         changed= 1;
1586                 }
1587         }
1588         else { /* backspace */
1589                 if(len!=0) {
1590                         if ((but->selend - but->selsta) > 0) {
1591                                 changed= ui_textedit_delete_selection(but, data);
1592                         }
1593                         else if(but->pos>0) {
1594                                 short pos= but->pos;
1595                                 int step;
1596
1597                                 ui_textedit_step_utf8(str, len, &pos, direction, jump, all);
1598                                 step= but->pos - pos;
1599
1600                                 for(x=but->pos; x<len; x++)
1601                                         str[x-step]= str[x];
1602                                 str[len-step]='\0';
1603
1604                                 but->pos -= step;
1605                                 changed= 1;
1606                         }
1607                 } 
1608         }
1609
1610         return changed;
1611 }
1612
1613 static int ui_textedit_autocomplete(bContext *C, uiBut *but, uiHandleButtonData *data)
1614 {
1615         char *str;
1616         int changed= 1;
1617
1618         str= data->str;
1619
1620         if(data->searchbox)
1621                 ui_searchbox_autocomplete(C, data->searchbox, but, data->str);
1622         else
1623                 but->autocomplete_func(C, str, but->autofunc_arg);
1624
1625         but->pos= strlen(str);
1626         but->selsta= but->selend= but->pos;
1627
1628         return changed;
1629 }
1630
1631 static int ui_textedit_copypaste(uiBut *but, uiHandleButtonData *data, int paste, int copy, int cut)
1632 {
1633         char buf[UI_MAX_DRAW_STR]={0};
1634         char *str, *p, *pbuf;
1635         int len, x, i, changed= 0;
1636
1637         str= data->str;
1638         len= strlen(str);
1639         
1640         /* paste */
1641         if (paste) {
1642                 /* extract the first line from the clipboard */
1643                 p = pbuf= WM_clipboard_text_get(0);
1644
1645                 if(p && p[0]) {
1646                         unsigned int y;
1647                         i= 0;
1648                         while (*p && *p!='\r' && *p!='\n' && i<UI_MAX_DRAW_STR-1) {
1649                                 buf[i++]=*p;
1650                                 p++;
1651                         }
1652                         buf[i]= 0;
1653
1654                         /* paste over the current selection */
1655                         if ((but->selend - but->selsta) > 0) {
1656                                 ui_textedit_delete_selection(but, data);
1657                                 len= strlen(str);
1658                         }
1659                         
1660                         for (y=0; y<strlen(buf); y++)
1661                         {
1662                                 /* add contents of buffer */
1663                                 if(len+1 < data->maxlen) {
1664                                         for(x= data->maxlen; x>but->pos; x--)
1665                                                 str[x]= str[x-1];
1666                                         str[but->pos]= buf[y];
1667                                         but->pos++; 
1668                                         len++;
1669                                         str[len]= '\0';
1670                                 }
1671                         }
1672
1673                         changed= 1;
1674                 }
1675
1676                 if(pbuf)
1677                         MEM_freeN(pbuf);
1678         }
1679         /* cut & copy */
1680         else if (copy || cut) {
1681                 /* copy the contents to the copypaste buffer */
1682                 for(x= but->selsta; x <= but->selend; x++) {
1683                         if (x==but->selend)
1684                                 buf[x] = '\0';
1685                         else
1686                                 buf[(x - but->selsta)] = str[x];
1687                 }
1688
1689                 WM_clipboard_text_set(buf, 0);
1690                 
1691                 /* for cut only, delete the selection afterwards */
1692                 if(cut)
1693                         if((but->selend - but->selsta) > 0)
1694                                 changed= ui_textedit_delete_selection(but, data);
1695         } 
1696
1697         return changed;
1698 }
1699
1700 static void ui_textedit_begin(bContext *C, uiBut *but, uiHandleButtonData *data)
1701 {
1702         if(data->str) {
1703                 MEM_freeN(data->str);
1704                 data->str= NULL;
1705         }
1706
1707         /* retrieve string */
1708         data->maxlen= ui_get_but_string_max_length(but);
1709         data->str= MEM_callocN(sizeof(char)*data->maxlen + 1, "textedit str");
1710         ui_get_but_string(but, data->str, data->maxlen);
1711
1712         if(ELEM3(but->type, NUM, NUMABS, NUMSLI)) {
1713                 /* XXX: we dont have utf editing yet so for numbers its best to strip out utf chars 
1714                  * this is so the deg' synbol isnt included in number editing fields: bug 22274 */
1715                 int i;
1716                 for(i=0; data->str[i]; i++) {
1717                         if(!isascii(data->str[i])) {
1718                                 /* no stripping actually: just convert to alt name */
1719                                 ui_convert_to_unit_alt_name(but, data->str, data->maxlen);
1720                                 break;
1721                         }
1722                 }
1723         }
1724         
1725         
1726         data->origstr= BLI_strdup(data->str);
1727         data->selextend= 0;
1728         data->selstartx= 0;
1729
1730         /* set cursor pos to the end of the text */
1731         but->editstr= data->str;
1732         but->pos= strlen(data->str);
1733         but->selsta= 0;
1734         but->selend= strlen(data->str);
1735
1736         /* optional searchbox */
1737         if(but->type==SEARCH_MENU) {
1738                 data->searchbox= ui_searchbox_create(C, data->region, but);
1739                 ui_searchbox_update(C, data->searchbox, but, 1); /* 1= reset */
1740         }
1741         
1742         ui_check_but(but);
1743         
1744         WM_cursor_modal(CTX_wm_window(C), BC_TEXTEDITCURSOR);
1745 }
1746
1747 static void ui_textedit_end(bContext *C, uiBut *but, uiHandleButtonData *data)
1748 {
1749         if(but) {
1750                 if(ui_is_utf8_but(but)) {
1751                         int strip= BLI_utf8_invalid_strip(but->editstr, strlen(but->editstr));
1752                         /* not a file?, strip non utf-8 chars */
1753                         if(strip) {
1754                                 /* wont happen often so isnt that annoying to keep it here for a while */
1755                                 printf("%s: invalid utf8 - stripped chars %d\n", __func__, strip);
1756                         }
1757                 }
1758                 
1759                 if(data->searchbox) {
1760                         if(data->cancel==0)
1761                                 ui_searchbox_apply(but, data->searchbox);
1762
1763                         ui_searchbox_free(C, data->searchbox);
1764                         data->searchbox= NULL;
1765                 }
1766                 
1767                 but->editstr= NULL;
1768                 but->pos= -1;
1769         }
1770         
1771         WM_cursor_restore(CTX_wm_window(C));
1772 }
1773
1774 static void ui_textedit_next_but(uiBlock *block, uiBut *actbut, uiHandleButtonData *data)
1775 {
1776         uiBut *but;
1777
1778         /* label and roundbox can overlap real buttons (backdrops...) */
1779         if(ELEM4(actbut->type, LABEL, SEPR, ROUNDBOX, LISTBOX))
1780                 return;
1781
1782         for(but= actbut->next; but; but= but->next) {
1783                 if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
1784                         if(!(but->flag & UI_BUT_DISABLED)) {
1785                                 data->postbut= but;
1786                                 data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
1787                                 return;
1788                         }
1789                 }
1790         }
1791         for(but= block->buttons.first; but!=actbut; but= but->next) {
1792                 if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
1793                         if(!(but->flag & UI_BUT_DISABLED)) {
1794                                 data->postbut= but;
1795                                 data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
1796                                 return;
1797                         }
1798                 }
1799         }
1800 }
1801
1802 static void ui_textedit_prev_but(uiBlock *block, uiBut *actbut, uiHandleButtonData *data)
1803 {
1804         uiBut *but;
1805
1806         /* label and roundbox can overlap real buttons (backdrops...) */
1807         if(ELEM4(actbut->type, LABEL, SEPR, ROUNDBOX, LISTBOX))
1808                 return;
1809
1810         for(but= actbut->prev; but; but= but->prev) {
1811                 if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
1812                         if(!(but->flag & UI_BUT_DISABLED)) {
1813                                 data->postbut= but;
1814                                 data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
1815                                 return;
1816                         }
1817                 }
1818         }
1819         for(but= block->buttons.last; but!=actbut; but= but->prev) {
1820                 if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
1821                         if(!(but->flag & UI_BUT_DISABLED)) {
1822                                 data->postbut= but;
1823                                 data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
1824                                 return;
1825                         }
1826                 }
1827         }
1828 }
1829
1830
1831 static void ui_do_but_textedit(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
1832 {
1833         int mx, my, changed= 0, inbox=0, update= 0, retval= WM_UI_HANDLER_CONTINUE;
1834
1835         switch(event->type) {
1836                 case WHEELUPMOUSE:
1837                 case WHEELDOWNMOUSE:
1838                 case MOUSEMOVE:
1839                         if(data->searchbox)
1840                                 ui_searchbox_event(C, data->searchbox, but, event);
1841                         
1842                         break;
1843                 case RIGHTMOUSE:
1844                 case ESCKEY:
1845                         data->cancel= 1;
1846                         data->escapecancel= 1;
1847                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1848                         retval= WM_UI_HANDLER_BREAK;
1849                         break;
1850                 case LEFTMOUSE: {
1851                         
1852                         /* exit on LMB only on RELEASE for searchbox, to mimic other popups, and allow multiple menu levels */
1853                         if(data->searchbox)
1854                                 inbox= ui_searchbox_inside(data->searchbox, event->x, event->y);
1855
1856                         if(event->val==KM_PRESS) {
1857                                 mx= event->x;
1858                                 my= event->y;
1859                                 ui_window_to_block(data->region, block, &mx, &my);
1860
1861                                 if (ui_but_contains_pt(but, mx, my)) {
1862                                         ui_textedit_set_cursor_pos(but, data, mx);
1863                                         but->selsta = but->selend = but->pos;
1864                                         data->selstartx= mx;
1865
1866                                         button_activate_state(C, but, BUTTON_STATE_TEXT_SELECTING);
1867                                         retval= WM_UI_HANDLER_BREAK;
1868                                 }
1869                                 else if(inbox==0) {
1870                                         /* if searchbox, click outside will cancel */
1871                                         if(data->searchbox)
1872                                                 data->cancel= data->escapecancel= 1;
1873                                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1874                                         retval= WM_UI_HANDLER_BREAK;
1875                                 }
1876                         }
1877                         else if(inbox) {
1878                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1879                                 retval= WM_UI_HANDLER_BREAK;
1880                         }
1881                         break;
1882                 }
1883         }
1884
1885         if(event->val==KM_PRESS) {
1886                 switch (event->type) {
1887                         case VKEY:
1888                         case XKEY:
1889                         case CKEY:
1890                                 if(event->ctrl || event->oskey) {
1891                                         if(event->type == VKEY)
1892                                                 changed= ui_textedit_copypaste(but, data, 1, 0, 0);
1893                                         else if(event->type == CKEY)
1894                                                 changed= ui_textedit_copypaste(but, data, 0, 1, 0);
1895                                         else if(event->type == XKEY)
1896                                                 changed= ui_textedit_copypaste(but, data, 0, 0, 1);
1897
1898                                         retval= WM_UI_HANDLER_BREAK;
1899                                 }
1900                                 break;
1901                         case RIGHTARROWKEY:
1902                                 ui_textedit_move(but, data, 1, event->shift, event->ctrl, FALSE);
1903                                 retval= WM_UI_HANDLER_BREAK;
1904                                 break;
1905                         case LEFTARROWKEY:
1906                                 ui_textedit_move(but, data, 0, event->shift, event->ctrl, FALSE);
1907                                 retval= WM_UI_HANDLER_BREAK;
1908                                 break;
1909                         case DOWNARROWKEY:
1910                                 if(data->searchbox) {
1911                                         ui_searchbox_event(C, data->searchbox, but, event);
1912                                         break;
1913                                 }
1914                                 /* pass on purposedly */
1915                         case ENDKEY:
1916                                 ui_textedit_move(but, data, 1, event->shift, TRUE, TRUE);
1917                                 retval= WM_UI_HANDLER_BREAK;
1918                                 break;
1919                         case UPARROWKEY:
1920                                 if(data->searchbox) {
1921                                         ui_searchbox_event(C, data->searchbox, but, event);
1922                                         break;
1923                                 }
1924                                 /* pass on purposedly */
1925                         case HOMEKEY:
1926                                 ui_textedit_move(but, data, 0, event->shift, TRUE, TRUE);
1927                                 retval= WM_UI_HANDLER_BREAK;
1928                                 break;
1929                         case PADENTER:
1930                         case RETKEY:
1931                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1932                                 retval= WM_UI_HANDLER_BREAK;
1933                                 break;
1934                         case DELKEY:
1935                                 changed= ui_textedit_delete(but, data, 1, 0, event->ctrl);
1936                                 retval= WM_UI_HANDLER_BREAK;
1937                                 break;
1938
1939                         case BACKSPACEKEY:
1940                                 changed= ui_textedit_delete(but, data, 0, event->shift, event->ctrl);
1941                                 retval= WM_UI_HANDLER_BREAK;
1942                                 break;
1943                                 
1944                         case TABKEY:
1945                                 /* there is a key conflict here, we can't tab with autocomplete */
1946                                 if(but->autocomplete_func || data->searchbox) {
1947                                         changed= ui_textedit_autocomplete(C, but, data);
1948                                         update= 1; /* do live update for tab key */
1949                                 }
1950                                 /* the hotkey here is not well defined, was G.qual so we check all */
1951                                 else if(event->shift || event->ctrl || event->alt || event->oskey) {
1952                                         ui_textedit_prev_but(block, but, data);
1953                                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1954                                 }
1955                                 else {
1956                                         ui_textedit_next_but(block, but, data);
1957                                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1958                                 }
1959                                 retval= WM_UI_HANDLER_BREAK;
1960                                 break;
1961                 }
1962
1963                 if(event->ascii && (retval == WM_UI_HANDLER_CONTINUE)) {
1964                         char ascii = event->ascii;
1965
1966                         /* exception that's useful for number buttons, some keyboard
1967                            numpads have a comma instead of a period */
1968                         if(ELEM3(but->type, NUM, NUMABS, NUMSLI))
1969                                 if(event->type == PADPERIOD && ascii == ',')
1970                                         ascii = '.';
1971
1972                         if(event->utf8_buf[0]) {
1973                                 /* keep this printf until utf8 is well tested */
1974                                 printf("%s: utf8 char '%s'\n", __func__, event->utf8_buf);
1975                                 changed= ui_textedit_type_utf8(but, data, event->utf8_buf);
1976                         }
1977                         else {
1978                                 changed= ui_textedit_type_ascii(but, data, ascii);
1979                         }
1980
1981                         retval= WM_UI_HANDLER_BREAK;
1982                         
1983                 }
1984                 /* textbutton with magnifier icon: do live update for search button */
1985                 if(but->icon==ICON_VIEWZOOM)
1986                         update= 1;
1987         }
1988
1989         if(changed) {
1990                 /* only update when typing for TAB key */
1991                 if(update && data->interactive) ui_apply_button(C, block, but, data, 1);
1992                 else ui_check_but(but);
1993                 but->changed= TRUE;
1994                 
1995                 if(data->searchbox)
1996                         ui_searchbox_update(C, data->searchbox, but, 1); /* 1 = reset */
1997         }
1998
1999         if(changed || (retval == WM_UI_HANDLER_BREAK))
2000                 ED_region_tag_redraw(data->region);
2001 }
2002
2003 static void ui_do_but_textedit_select(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2004 {
2005         int mx, my, retval= WM_UI_HANDLER_CONTINUE;
2006
2007         switch(event->type) {
2008                 case MOUSEMOVE: {
2009                         mx= event->x;
2010                         my= event->y;
2011                         ui_window_to_block(data->region, block, &mx, &my);
2012
2013                         ui_textedit_set_cursor_select(but, data, mx);
2014                         retval= WM_UI_HANDLER_BREAK;
2015                         break;
2016                 }
2017                 case LEFTMOUSE:
2018                         if(event->val == KM_RELEASE)
2019                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2020                         retval= WM_UI_HANDLER_BREAK;
2021                         break;
2022         }
2023
2024         if(retval == WM_UI_HANDLER_BREAK) {
2025                 ui_check_but(but);
2026                 ED_region_tag_redraw(data->region);
2027         }
2028 }
2029
2030 /* ************* number editing for various types ************* */
2031
2032 static void ui_numedit_begin(uiBut *but, uiHandleButtonData *data)
2033 {
2034         if(but->type == BUT_CURVE) {
2035                 but->editcumap= (CurveMapping*)but->poin;
2036         }
2037         else if(but->type == BUT_COLORBAND) {
2038                 data->coba= (ColorBand*)but->poin;
2039                 but->editcoba= data->coba;
2040         }
2041         else if(ELEM3(but->type, BUT_NORMAL, HSVCUBE, HSVCIRCLE)) {
2042                 ui_get_but_vectorf(but, data->origvec);
2043                 copy_v3_v3(data->vec, data->origvec);
2044                 but->editvec= data->vec;
2045         }
2046         else {
2047                 float softrange, softmin, softmax;
2048
2049                 data->startvalue= ui_get_but_val(but);
2050                 data->origvalue= data->startvalue;
2051                 data->value= data->origvalue;
2052                 but->editval= &data->value;
2053
2054                 softmin= but->softmin;
2055                 softmax= but->softmax;
2056                 softrange= softmax - softmin;
2057
2058                 data->dragfstart= (softrange == 0.0f)? 0.0f: ((float)data->value - softmin)/softrange;
2059                 data->dragf= data->dragfstart;
2060         }
2061
2062         data->dragchange= 0;
2063         data->draglock= 1;
2064 }
2065
2066 static void ui_numedit_end(uiBut *but, uiHandleButtonData *data)
2067 {
2068         but->editval= NULL;
2069         but->editvec= NULL;
2070         but->editcoba= NULL;
2071         but->editcumap= NULL;
2072
2073         data->dragstartx= 0;
2074         data->draglastx= 0;
2075         data->dragchange= 0;
2076         data->dragcbd= NULL;
2077         data->dragsel= 0;
2078 }
2079
2080 static void ui_numedit_apply(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data)
2081 {
2082         if(data->interactive) ui_apply_button(C, block, but, data, 1);
2083         else ui_check_but(but);
2084
2085         ED_region_tag_redraw(data->region);
2086 }
2087
2088 /* ****************** menu opening for various types **************** */
2089
2090 static void ui_blockopen_begin(bContext *C, uiBut *but, uiHandleButtonData *data)
2091 {
2092         uiBlockCreateFunc func= NULL;
2093         uiBlockHandleCreateFunc handlefunc= NULL;
2094         uiMenuCreateFunc menufunc= NULL;
2095         char *menustr= NULL;
2096         void *arg= NULL;
2097
2098         switch(but->type) {
2099                 case BLOCK:
2100                 case PULLDOWN:
2101                         if(but->menu_create_func) {
2102                                 menufunc= but->menu_create_func;
2103                                 arg= but->poin;
2104                         }
2105                         else {
2106                                 func= but->block_create_func;
2107                                 arg= but->poin?but->poin:but->func_argN;
2108                         }
2109                         break;
2110                 case MENU:
2111                         if(but->menu_create_func) {
2112                                 menufunc= but->menu_create_func;
2113                                 arg= but->poin;
2114                         }
2115                         else {
2116                                 data->origvalue= ui_get_but_val(but);
2117                                 data->value= data->origvalue;
2118                                 but->editval= &data->value;
2119
2120                                 menustr= but->str;
2121                         }
2122                         break;
2123                 case ICONROW:
2124                         menufunc= ui_block_func_ICONROW;
2125                         arg= but;
2126                         break;
2127                 case ICONTEXTROW:
2128                         menufunc= ui_block_func_ICONTEXTROW;
2129                         arg= but;
2130                         break;
2131                 case COL:
2132                         ui_get_but_vectorf(but, data->origvec);
2133                         VECCOPY(data->vec, data->origvec);
2134                         but->editvec= data->vec;
2135
2136                         handlefunc= ui_block_func_COL;
2137                         arg= but;
2138                         break;
2139         }
2140
2141         if(func || handlefunc) {
2142                 data->menu= ui_popup_block_create(C, data->region, but, func, handlefunc, arg);
2143                 if(but->block->handle)
2144                         data->menu->popup= but->block->handle->popup;
2145         }
2146         else if(menufunc || menustr) {
2147                 data->menu= ui_popup_menu_create(C, data->region, but, menufunc, arg, menustr);
2148                 if(but->block->handle)
2149                         data->menu->popup= but->block->handle->popup;
2150         }
2151
2152         /* this makes adjacent blocks auto open from now on */
2153         //if(but->block->auto_open==0) but->block->auto_open= 1;
2154 }
2155
2156 static void ui_blockopen_end(bContext *C, uiBut *but, uiHandleButtonData *data)
2157 {
2158         if(but) {
2159                 but->editval= NULL;
2160                 but->editvec= NULL;
2161
2162                 but->block->auto_open_last= PIL_check_seconds_timer();
2163         }
2164
2165         if(data->menu) {
2166                 ui_popup_block_free(C, data->menu);
2167                 data->menu= NULL;
2168         }
2169 }
2170
2171 /* ***************** events for different button types *************** */
2172
2173 static int ui_do_but_BUT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2174 {
2175         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2176                 if(event->type == LEFTMOUSE && event->val==KM_PRESS) {
2177                         button_activate_state(C, but, BUTTON_STATE_WAIT_RELEASE);
2178                         return WM_UI_HANDLER_BREAK;
2179                 }
2180                 else if(event->type == LEFTMOUSE && but->block->handle) {
2181                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2182                         return WM_UI_HANDLER_BREAK;
2183                 }
2184                 else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS) {
2185                         button_activate_state(C, but, BUTTON_STATE_WAIT_FLASH);
2186                         return WM_UI_HANDLER_BREAK;
2187                 }
2188         }
2189         else if(data->state == BUTTON_STATE_WAIT_RELEASE) {
2190                 if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
2191                         if(!(but->flag & UI_SELECT))
2192                                 data->cancel= 1;
2193                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2194                         return WM_UI_HANDLER_BREAK;
2195                 }
2196         }
2197
2198         return WM_UI_HANDLER_CONTINUE;
2199 }
2200
2201 static int ui_do_but_HOTKEYEVT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2202 {
2203         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2204                 if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
2205                         but->drawstr[0]= 0;
2206                         but->modifier_key= 0;
2207                         button_activate_state(C, but, BUTTON_STATE_WAIT_KEY_EVENT);
2208                         return WM_UI_HANDLER_BREAK;
2209                 }
2210         }
2211         else if(data->state == BUTTON_STATE_WAIT_KEY_EVENT) {
2212                 
2213                 if(event->type == MOUSEMOVE)
2214                         return WM_UI_HANDLER_CONTINUE;
2215                 
2216                 if(event->type == LEFTMOUSE && event->val==KM_PRESS) {
2217                         /* only cancel if click outside the button */
2218                         if(ui_mouse_inside_button(but->active->region, but, event->x, event->y) == 0) {
2219                                 /* data->cancel doesnt work, this button opens immediate */
2220                                 if(but->flag & UI_BUT_IMMEDIATE)
2221                                         ui_set_but_val(but, 0);
2222                                 else
2223                                         data->cancel= 1;
2224                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2225                                 return WM_UI_HANDLER_BREAK;
2226                         }
2227                 }
2228                 
2229                 /* always set */
2230                 but->modifier_key = 0;
2231                 if(event->shift)
2232                         but->modifier_key |= KM_SHIFT;
2233                 if(event->alt)
2234                         but->modifier_key |= KM_ALT;
2235                 if(event->ctrl)
2236                         but->modifier_key |= KM_CTRL;
2237                 if(event->oskey)
2238                         but->modifier_key |= KM_OSKEY;
2239                 
2240                 ui_check_but(but);
2241                 ED_region_tag_redraw(data->region);
2242                         
2243                 if(event->val==KM_PRESS) {
2244                         if(ISHOTKEY(event->type)) { 
2245                                 
2246                                 if(WM_key_event_string(event->type)[0])
2247                                         ui_set_but_val(but, event->type);
2248                                 else
2249                                         data->cancel= 1;
2250                                 
2251                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2252                                 return WM_UI_HANDLER_BREAK;
2253                         }
2254                         else if(event->type == ESCKEY) {
2255                                 data->cancel= 1;
2256                                 data->escapecancel= 1;
2257                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2258                         }
2259                         
2260                 }
2261         }
2262         
2263         return WM_UI_HANDLER_CONTINUE;
2264 }
2265
2266 static int ui_do_but_KEYEVT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2267 {
2268         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2269                 if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
2270                         button_activate_state(C, but, BUTTON_STATE_WAIT_KEY_EVENT);
2271                         return WM_UI_HANDLER_BREAK;
2272                 }
2273         }
2274         else if(data->state == BUTTON_STATE_WAIT_KEY_EVENT) {
2275                 if(event->type == MOUSEMOVE)
2276                         return WM_UI_HANDLER_CONTINUE;
2277
2278                 if(event->val==KM_PRESS) {
2279                         if(WM_key_event_string(event->type)[0])
2280                                 ui_set_but_val(but, event->type);
2281                         else
2282                                 data->cancel= 1;
2283
2284                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2285                 }
2286         }
2287
2288         return WM_UI_HANDLER_CONTINUE;
2289 }
2290
2291 static int ui_do_but_TEX(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2292 {
2293         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2294                 if(ELEM(event->type, LEFTMOUSE, EVT_BUT_OPEN) && event->val==KM_PRESS) {
2295                         if(but->dt == UI_EMBOSSN && !event->ctrl);
2296                         else {
2297                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2298                                 return WM_UI_HANDLER_BREAK;
2299                         }
2300                 }
2301         }
2302         else if(data->state == BUTTON_STATE_TEXT_EDITING) {
2303                 ui_do_but_textedit(C, block, but, data, event);
2304                 return WM_UI_HANDLER_BREAK;
2305         }
2306         else if(data->state == BUTTON_STATE_TEXT_SELECTING) {
2307                 ui_do_but_textedit_select(C, block, but, data, event);
2308                 return WM_UI_HANDLER_BREAK;
2309         }
2310
2311         return WM_UI_HANDLER_CONTINUE;
2312 }
2313
2314 static int ui_do_but_TOG(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2315 {
2316         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2317                 if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
2318                         data->togdual= event->ctrl;
2319                         data->togonly= !event->shift;
2320                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2321                         return WM_UI_HANDLER_BREAK;
2322                 }
2323         }
2324         return WM_UI_HANDLER_CONTINUE;
2325 }
2326
2327 static int ui_do_but_EXIT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2328 {
2329         
2330         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2331
2332                 /* first handle click on icondrag type button */
2333                 if(event->type==LEFTMOUSE && but->dragpoin) {
2334                         if(ui_but_mouse_inside_icon(but, data->region, event)) {
2335                                 
2336                                 /* tell the button to wait and keep checking further events to
2337                                  * see if it should start dragging */
2338                                 button_activate_state(C, but, BUTTON_STATE_WAIT_DRAG);
2339                                 data->dragstartx= event->x;
2340                                 data->dragstarty= event->y;
2341                                 return WM_UI_HANDLER_CONTINUE;
2342                         }
2343                 }
2344                 
2345                 if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
2346                         int ret = WM_UI_HANDLER_BREAK;
2347                         /* XXX (a bit ugly) Special case handling for filebrowser drag button */
2348                         if(but->dragpoin && but->imb && ui_but_mouse_inside_icon(but, data->region, event)) {
2349                                 ret = WM_UI_HANDLER_CONTINUE;
2350                         }
2351                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2352                         return ret;
2353                 }
2354         }
2355         else if(data->state == BUTTON_STATE_WAIT_DRAG) {
2356                 
2357                 /* this function also ends state */
2358                 if(ui_but_start_drag(C, but, data, event)) {
2359                         return WM_UI_HANDLER_BREAK;
2360                 }
2361                 
2362                 /* If the mouse has been pressed and released, getting to 
2363                  * this point without triggering a drag, then clear the 
2364                  * drag state for this button and continue to pass on the event */
2365                 if(event->type==LEFTMOUSE && event->val==KM_RELEASE) {
2366                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2367                         return WM_UI_HANDLER_CONTINUE;
2368                 }
2369                 
2370                 /* while waiting for a drag to be triggered, always block 
2371                  * other events from getting handled */
2372                 return WM_UI_HANDLER_BREAK;
2373         }
2374         
2375         return WM_UI_HANDLER_CONTINUE;
2376 }
2377
2378 /* var names match ui_numedit_but_NUM */
2379 static float ui_numedit_apply_snapf(uiBut *but, float tempf, float softmin, float softmax, float softrange, int snap)
2380 {
2381         if(tempf==softmin || tempf==softmax || snap==0) {
2382                 /* pass */
2383         }
2384         else {
2385                 float fac= 1.0f;
2386                 
2387                 if(ui_is_but_unit(but)) {
2388                         UnitSettings *unit= but->block->unit;
2389                         int unit_type= uiButGetUnitType(but)>>16;
2390
2391                         if(bUnit_IsValid(unit->system, unit_type)) {
2392                                 fac= (float)bUnit_BaseScalar(unit->system, unit_type);
2393                                 if(ELEM3(unit_type, B_UNIT_LENGTH, B_UNIT_AREA, B_UNIT_VOLUME)) {
2394                                         fac /= unit->scale_length;
2395                                 }
2396                         }
2397                 }
2398
2399                 if(fac != 1.0f) {
2400                         /* snap in unit-space */
2401                         tempf /= fac;
2402                         /* softmin /= fac; */ /* UNUSED */
2403                         /* softmax /= fac; */ /* UNUSED */
2404                         softrange /= fac;
2405                 }
2406
2407                 if(snap==1) {
2408                         if(softrange < 2.10f) tempf= 0.1f*floorf(10.0f*tempf);
2409                         else if(softrange < 21.0f) tempf= floorf(tempf);
2410                         else tempf= 10.0f*floorf(tempf/10.0f);
2411                 }
2412                 else if(snap==2) {
2413                         if(softrange < 2.10f) tempf= 0.01f*floorf(100.0f*tempf);
2414                         else if(softrange < 21.0f) tempf= 0.1f*floorf(10.0f*tempf);
2415                         else tempf= floor(tempf);
2416                 }
2417                 
2418                 if(fac != 1.0f)
2419                         tempf *= fac;
2420         }
2421
2422         return tempf;
2423 }
2424
2425 static float ui_numedit_apply_snap(int temp, float softmin, float softmax, int snap)
2426 {
2427         if(temp==softmin || temp==softmax)
2428                 return temp;
2429
2430         switch(snap) {
2431         case 0:
2432                 break;
2433         case 1:
2434                 temp= 10*(temp/10);
2435                 break;
2436         case 2:
2437                 temp= 100*(temp/100);
2438                 break;
2439         }
2440
2441         return temp;
2442 }
2443
2444 static int ui_numedit_but_NUM(uiBut *but, uiHandleButtonData *data, float fac, int snap, int mx)
2445 {
2446         float deler, tempf, softmin, softmax, softrange;
2447         int lvalue, temp, changed= 0;
2448         
2449         if(mx == data->draglastx)
2450                 return changed;
2451         
2452         /* drag-lock - prevent unwanted scroll adjustments */
2453         /* change value (now 3) to adjust threshold in pixels */
2454         if(data->draglock) {
2455                 if(abs(mx-data->dragstartx) <= 3)
2456                         return changed;
2457
2458                 data->draglock= 0;
2459                 data->dragstartx= mx;  /* ignore mouse movement within drag-lock */
2460         }
2461
2462         softmin= but->softmin;
2463         softmax= but->softmax;
2464         softrange= softmax - softmin;
2465
2466         if(ui_is_a_warp_but(but)) {
2467                 /* Mouse location isn't screen clamped to the screen so use a linear mapping
2468                  * 2px == 1-int, or 1px == 1-ClickStep */
2469                 if(ui_is_but_float(but)) {
2470                         fac *= 0.01f*but->a1;
2471                         tempf = (float)data->startvalue + ((float)(mx - data->dragstartx) * fac);
2472                         tempf= ui_numedit_apply_snapf(but, tempf, softmin, softmax, softrange, snap);
2473
2474 #if 1           /* fake moving the click start, nicer for dragging back after passing the limit */
2475                         if(tempf < softmin) {
2476                                 data->dragstartx -= (softmin-tempf) / fac;
2477                                 tempf= softmin;
2478                         } else if (tempf > softmax) {
2479                                 data->dragstartx += (tempf-softmax) / fac;
2480                                 tempf= softmax;
2481                         }
2482 #else
2483                         CLAMP(tempf, softmin, softmax);
2484 #endif
2485
2486                         if(tempf != (float)data->value) {
2487                                 data->dragchange= 1;
2488                                 data->value= tempf;
2489                                 changed= 1;
2490                         }
2491                 }
2492                 else {
2493                         if(softrange > 256)             fac= 1.0;               /* 1px == 1 */
2494                         else if(softrange > 32) fac= 1.0/2.0;   /* 2px == 1 */
2495                         else                                    fac= 1.0/16.0;  /* 16px == 1? */
2496
2497                         temp= data->startvalue + (((double)mx - data->dragstartx) * (double)fac);
2498                         temp= ui_numedit_apply_snap(temp, softmin, softmax, snap);
2499
2500 #if 1           /* fake moving the click start, nicer for dragging back after passing the limit */
2501                         if(temp < softmin) {
2502                                 data->dragstartx -= (softmin-temp) / fac;
2503                                 temp= softmin;
2504                         } else if (temp > softmax) {
2505                                 data->dragstartx += (temp-softmax) / fac;
2506                                 temp= softmax;
2507                         }
2508 #else
2509                         CLAMP(temp, softmin, softmax);
2510 #endif
2511
2512                         if(temp != data->value) {
2513                                 data->dragchange= 1;
2514                                 data->value= temp;
2515                                 changed= 1;
2516                         }
2517                 }
2518
2519                 data->draglastx= mx;
2520         }
2521         else {
2522                 /* Use a non-linear mapping of the mouse drag especially for large floats (normal behavior) */
2523                 deler= 500;
2524                 if(!ui_is_but_float(but)) {
2525                         /* prevent large ranges from getting too out of control */
2526                         if (softrange > 600) deler = powf(softrange, 0.75);
2527                         
2528                         if (softrange < 100) deler= 200.0;
2529                         if (softrange < 25) deler= 50.0;
2530                 }
2531                 deler /= fac;
2532
2533                 if(softrange > 11) {
2534                         /* non linear change in mouse input- good for high precicsion */
2535                         data->dragf+= (((float)(mx-data->draglastx))/deler) * (fabsf(data->dragstartx-mx)*0.002f);
2536                 } else if (softrange > 129) { /* only scale large int buttons */
2537                         /* non linear change in mouse input- good for high precicsionm ints need less fine tuning */
2538                         data->dragf+= (((float)(mx-data->draglastx))/deler) * (fabsf(data->dragstartx-mx)*0.004f);
2539                 } else {
2540                         /*no scaling */
2541                         data->dragf+= ((float)(mx-data->draglastx))/deler ;
2542                 }
2543         
2544                 CLAMP(data->dragf, 0.0f, 1.0f);
2545                 data->draglastx= mx;
2546                 tempf= (softmin + data->dragf*softrange);
2547
2548
2549                 if(!ui_is_but_float(but)) {
2550                         temp= floorf(tempf + 0.5f);
2551
2552                         temp= ui_numedit_apply_snap(temp, softmin, softmax, snap);
2553
2554                         CLAMP(temp, softmin, softmax);
2555                         lvalue= (int)data->value;
2556                         
2557                         if(temp != lvalue) {
2558                                 data->dragchange= 1;
2559                                 data->value= (double)temp;
2560                                 changed= 1;
2561                         }
2562                 }
2563                 else {
2564                         temp= 0;
2565                         tempf= ui_numedit_apply_snapf(but, tempf, softmin, softmax, softrange, snap);
2566
2567                         CLAMP(tempf, softmin, softmax);
2568
2569                         if(tempf != (float)data->value) {
2570                                 data->dragchange= 1;
2571                                 data->value= tempf;
2572                                 changed= 1;
2573                         }
2574                 }
2575         }
2576
2577
2578         return changed;
2579 }
2580
2581 static int ui_do_but_NUM(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2582 {
2583         int mx, my;     /* mouse location scaled to fit the UI */
2584         int screen_mx, screen_my; /* mouse location kept at screen pixel coords */
2585         int click= 0;
2586         int retval= WM_UI_HANDLER_CONTINUE;
2587         
2588         mx= screen_mx= event->x;
2589         my= screen_my= event->y;
2590
2591         ui_window_to_block(data->region, block, &mx, &my);
2592
2593         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2594                 /* XXX hardcoded keymap check.... */
2595                 if(event->type == WHEELDOWNMOUSE && event->alt) {
2596                         mx= but->x1;
2597                         click= 1;
2598                 }
2599                 else if(event->type == WHEELUPMOUSE && event->alt) {
2600                         mx= but->x2;
2601                         click= 1;
2602                 }
2603                 else if(event->val==KM_PRESS) {
2604                         if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->ctrl) {
2605                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2606                                 retval= WM_UI_HANDLER_BREAK;
2607                         }
2608                         else if(event->type == LEFTMOUSE) {
2609                                 data->dragstartx= data->draglastx= ui_is_a_warp_but(but) ? screen_mx:mx;
2610                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2611                                 retval= WM_UI_HANDLER_BREAK;
2612                         }
2613                         else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS)
2614                                 click= 1;
2615                         else if (event->type == MINUSKEY && event->val==KM_PRESS) {
2616                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2617                                 data->value = -data->value;
2618                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2619                                 retval= WM_UI_HANDLER_BREAK;
2620                         }
2621                 }
2622                 
2623         }
2624         else if(data->state == BUTTON_STATE_NUM_EDITING) {
2625                 if(event->type == ESCKEY) {
2626                         data->cancel= 1;
2627                         data->escapecancel= 1;
2628                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2629                 }
2630                 else if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
2631                         if(data->dragchange)
2632                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2633                         else
2634                                 click= 1;
2635                 }
2636                 else if(event->type == MOUSEMOVE) {
2637                         float fac;
2638                         int snap;
2639
2640                         fac= 1.0f;
2641                         if(event->shift) fac /= 10.0f;
2642                         if(event->alt) fac /= 20.0f;
2643                         
2644                         snap= (event->ctrl)? (event->shift)? 2: 1: 0;
2645
2646                         if(ui_numedit_but_NUM(but, data, fac, snap, (ui_is_a_warp_but(but) ? screen_mx:mx)))
2647                                 ui_numedit_apply(C, block, but, data);
2648                 }
2649                 retval= WM_UI_HANDLER_BREAK;
2650         }
2651         else if(data->state == BUTTON_STATE_TEXT_EDITING) {
2652                 ui_do_but_textedit(C, block, but, data, event);
2653                 retval= WM_UI_HANDLER_BREAK;
2654         }
2655         else if(data->state == BUTTON_STATE_TEXT_SELECTING) {
2656                 ui_do_but_textedit_select(C, block, but, data, event);
2657                 retval= WM_UI_HANDLER_BREAK;
2658         }
2659         
2660         if(click) {
2661                 /* we can click on the side arrows to increment/decrement,
2662                  * or click inside to edit the value directly */
2663                 float tempf, softmin, softmax;
2664                 int temp;
2665
2666                 softmin= but->softmin;
2667                 softmax= but->softmax;
2668
2669                 if(!ui_is_but_float(but)) {
2670                         if(mx < (but->x1 + (but->x2 - but->x1)/3 - 3)) {
2671                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2672
2673                                 temp= (int)data->value - 1;
2674                                 if(temp>=softmin && temp<=softmax)
2675                                         data->value= (double)temp;
2676                                 else
2677                                         data->cancel= 1;
2678
2679                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2680                         }
2681                         else if(mx > (but->x1 + (2*(but->x2 - but->x1)/3) + 3)) {
2682                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2683
2684                                 temp= (int)data->value + 1;
2685                                 if(temp>=softmin && temp<=softmax)
2686                                         data->value= (double)temp;
2687                                 else
2688                                         data->cancel= 1;
2689
2690                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2691                         }
2692                         else
2693                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2694                 }
2695                 else {
2696                         if(mx < (but->x1 + (but->x2 - but->x1)/3 - 3)) {
2697                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2698
2699                                 tempf= (float)data->value - 0.01f * but->a1;
2700                                 if (tempf < softmin) tempf = softmin;
2701                                 data->value= tempf;
2702
2703                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2704                         }
2705                         else if(mx > but->x1 + (2*((but->x2 - but->x1)/3) + 3)) {
2706                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2707
2708                                 tempf= (float)data->value + 0.01f * but->a1;
2709                                 if (tempf > softmax) tempf = softmax;
2710                                 data->value= tempf;
2711
2712                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2713                         }
2714                         else
2715                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2716                 }
2717
2718                 retval= WM_UI_HANDLER_BREAK;
2719         }
2720         
2721         return retval;
2722 }
2723
2724 static int ui_numedit_but_SLI(uiBut *but, uiHandleButtonData *data, int shift, int ctrl, int mx)
2725 {
2726         float deler, f, tempf, softmin, softmax, softrange;
2727         int temp, lvalue, changed= 0;
2728
2729         softmin= but->softmin;
2730         softmax= but->softmax;
2731         softrange= softmax - softmin;
2732
2733         if(but->type==NUMSLI) deler= ((but->x2-but->x1) - 5.0f*but->aspect);
2734         else if(but->type==HSVSLI) deler= ((but->x2-but->x1)/2.0f - 5.0f*but->aspect);
2735         else if(but->type==SCROLL) {
2736                 int horizontal= (but->x2 - but->x1 > but->y2 - but->y1);
2737                 float size= (horizontal)? (but->x2-but->x1): -(but->y2-but->y1);
2738                 deler= size*(but->softmax - but->softmin)/(but->softmax - but->softmin + but->a1);
2739         }
2740         else deler= (but->x2-but->x1- 5.0f*but->aspect);
2741
2742         f= (float)(mx-data->dragstartx)/deler + data->dragfstart;
2743         
2744         if(shift)
2745                 f= (f-data->dragfstart)/10.0f + data->dragfstart;
2746
2747         CLAMP(f, 0.0f, 1.0f);
2748         tempf= softmin + f*softrange;
2749         temp= floorf(tempf+0.5f);
2750
2751         if(ctrl) {
2752                 if(tempf==softmin || tempf==softmax);
2753                 else if(ui_is_but_float(but)) {
2754
2755                         if(shift) {
2756                                 if(tempf==softmin || tempf==softmax);
2757                                 else if(softmax-softmin < 2.10f) tempf= 0.01f * floorf(100.0f*tempf);
2758                                 else if(softmax-softmin < 21.0f) tempf= 0.1f * floorf(10.0f*tempf);
2759                                 else tempf= floorf(tempf);
2760                         }
2761                         else {
2762                                 if(softmax-softmin < 2.10f) tempf= 0.1f * floorf(10.0f*tempf);
2763                                 else if(softmax-softmin < 21.0f) tempf= floorf(tempf);
2764                                 else tempf= 10.0f*floorf(tempf/10.0f);
2765                         }
2766                 }
2767                 else {
2768                         temp= 10*(temp/10);
2769                         tempf= temp;
2770                 }
2771         }
2772
2773         if(!ui_is_but_float(but)) {
2774                 lvalue= floor(data->value+0.5);
2775
2776                 CLAMP(temp, softmin, softmax);
2777
2778                 if(temp != lvalue) {
2779                         data->value= temp;
2780                         data->dragchange= 1;
2781                         changed= 1;
2782                 }
2783         }
2784         else {
2785                 CLAMP(tempf, softmin, softmax);
2786
2787                 if(tempf != (float)data->value) {
2788                         data->value= tempf;
2789                         data->dragchange= 1;
2790                         changed= 1;
2791                 }
2792         }
2793
2794         return changed;
2795 }
2796
2797 static int ui_do_but_SLI(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2798 {
2799         int mx, my, click= 0;
2800         int retval= WM_UI_HANDLER_CONTINUE;
2801
2802         mx= event->x;
2803         my= event->y;
2804         ui_window_to_block(data->region, block, &mx, &my);
2805
2806         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2807                 /* XXX hardcoded keymap check.... */
2808                 if(event->type == WHEELDOWNMOUSE && event->alt) {
2809                         mx= but->x1;
2810                         click= 2;
2811                 }
2812                 else if(event->type == WHEELUPMOUSE && event->alt) {
2813                         mx= but->x2;
2814                         click= 2;
2815                 }
2816                 else if(event->val==KM_PRESS) {
2817                         if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->ctrl) {
2818                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2819                                 retval= WM_UI_HANDLER_BREAK;
2820                         }
2821                         /* alt-click on sides to get "arrows" like in NUM buttons, and match wheel usage above */
2822                         else if(event->type == LEFTMOUSE && event->alt) {
2823                                 int halfpos = (but->x1 + but->x2) / 2;
2824                                 click = 2;
2825                                 if (mx < halfpos)
2826                                         mx = but->x1;
2827                                 else
2828                                         mx = but->x2;
2829                         }
2830                         else if(event->type == LEFTMOUSE) {
2831                                 data->dragstartx= mx;
2832                                 data->draglastx= mx;
2833                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2834                                 retval= WM_UI_HANDLER_BREAK;
2835                         }
2836                         else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS)
2837                                 click= 1;
2838                         else if (event->type == MINUSKEY && event->val==KM_PRESS) {
2839                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2840                                 data->value = -data->value;
2841                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2842                                 retval= WM_UI_HANDLER_BREAK;
2843                         }
2844                 }
2845         }
2846         else if(data->state == BUTTON_STATE_NUM_EDITING) {
2847                 if(event->type == ESCKEY) {
2848                         data->cancel= 1;
2849                         data->escapecancel= 1;
2850                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2851                 }
2852                 else if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
2853                         if(data->dragchange)
2854                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2855                         else
2856                                 click= 1;
2857                 }
2858                 else if(event->type == MOUSEMOVE) {
2859                         if(ui_numedit_but_SLI(but, data, event->shift, event->ctrl, mx))
2860                                 ui_numedit_apply(C, block, but, data);
2861                 }
2862                 retval= WM_UI_HANDLER_BREAK;
2863         }
2864         else if(data->state == BUTTON_STATE_TEXT_EDITING) {
2865                 ui_do_but_textedit(C, block, but, data, event);
2866                 retval= WM_UI_HANDLER_BREAK;
2867         }
2868         else if(data->state == BUTTON_STATE_TEXT_SELECTING) {
2869                 ui_do_but_textedit_select(C, block, but, data, event);
2870                 retval= WM_UI_HANDLER_BREAK;
2871         }
2872
2873         if(click) {
2874                 if (click==2) {
2875                         /* nudge slider to the left or right */
2876                         float f, tempf, softmin, softmax, softrange;
2877                         int temp;
2878                         
2879                         button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2880                         
2881                         softmin= but->softmin;
2882                         softmax= but->softmax;
2883                         softrange= softmax - softmin;
2884                         
2885                         tempf= data->value;
2886                         temp= (int)data->value;
2887
2888 #if 0
2889                         if(but->type==SLI) {
2890                                 f= (float)(mx-but->x1)/(but->x2-but->x1); /* same as below */
2891                         }
2892                         else
2893 #endif
2894                         {
2895                                 f= (float)(mx- but->x1)/(but->x2-but->x1);
2896                         }
2897                         
2898                         f= softmin + f*softrange;
2899                         
2900                         if(!ui_is_but_float(but)) {
2901                                 if(f<temp) temp--;
2902                                 else temp++;
2903                                 
2904                                 if(temp>=softmin && temp<=softmax)
2905                                         data->value= temp;
2906                                 else
2907                                         data->cancel= 1;
2908                         } 
2909                         else {
2910                                 if(f<tempf) tempf -= 0.01f;
2911                                 else tempf += 0.01f;
2912                                 
2913                                 if(tempf>=softmin && tempf<=softmax)
2914                                         data->value= tempf;
2915                                 else
2916                                         data->cancel= 1;
2917                         }
2918                         
2919                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2920                         retval= WM_UI_HANDLER_BREAK;
2921                 }
2922                 else {
2923                         /* edit the value directly */
2924                         button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2925                         retval= WM_UI_HANDLER_BREAK;
2926                 }
2927         }
2928         
2929         return retval;
2930 }
2931
2932 static int ui_do_but_SCROLL(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2933 {
2934         int mx, my /*, click= 0 */;
2935         int retval= WM_UI_HANDLER_CONTINUE;
2936         int horizontal= (but->x2 - but->x1 > but->y2 - but->y1);
2937         
2938         mx= event->x;
2939         my= event->y;
2940         ui_window_to_block(data->region, block, &mx, &my);
2941
2942         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2943                 if(event->val==KM_PRESS) {
2944                         if(event->type == LEFTMOUSE) {
2945                                 if(horizontal) {
2946                                         data->dragstartx= mx;
2947                                         data->draglastx= mx;
2948                                 }
2949                                 else {
2950                                         data->dragstartx= my;
2951                                         data->draglastx= my;
2952                                 }
2953                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2954                                 retval= WM_UI_HANDLER_BREAK;
2955                         }
2956                         /* UNUSED - otherwise code is ok, add back if needed */
2957                         /* else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS)
2958                                 click= 1;
2959                         */
2960                 }
2961         }
2962         else if(data->state == BUTTON_STATE_NUM_EDITING) {
2963                 if(event->type == ESCKEY) {
2964                         data->cancel= 1;
2965                         data->escapecancel= 1;
2966                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2967                 }
2968                 else if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
2969                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2970                 }
2971                 else if(event->type == MOUSEMOVE) {
2972                         if(ui_numedit_but_SLI(but, data, 0, 0, (horizontal)? mx: my))
2973                                 ui_numedit_apply(C, block, but, data);
2974                 }
2975
2976                 retval= WM_UI_HANDLER_BREAK;
2977         }
2978         
2979         return retval;
2980 }