utf8 editing for UI text input, this means backspace, delete, arrow keys properly...
[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 static int ui_textedit_type_ascii(uiBut *but, uiHandleButtonData *data, char ascii)
1432 {
1433         char *str;
1434         int len, x, changed= 0;
1435
1436         str= data->str;
1437         len= strlen(str);
1438
1439         if(len-(but->selend - but->selsta)+1 <= data->maxlen) {
1440                 /* type over the current selection */
1441                 if ((but->selend - but->selsta) > 0)
1442                         changed= ui_textedit_delete_selection(but, data);
1443
1444                 len= strlen(str);
1445                 if(len+1 < data->maxlen) {
1446                         for(x= data->maxlen; x>but->pos; x--)
1447                                 str[x]= str[x-1];
1448                         str[but->pos]= ascii;
1449                         str[len+1]= '\0';
1450
1451                         but->pos++; 
1452                         changed= 1;
1453                 }
1454         }
1455
1456         return changed;
1457 }
1458
1459 static void ui_textedit_move(uiBut *but, uiHandleButtonData *data, int direction, int select, int jump, int jump_all)
1460 {
1461         const char *str= data->str;
1462         const int len= strlen(str);
1463         const int pos_prev= but->pos;
1464         const int has_sel= (but->selend - but->selsta) > 0;
1465
1466         /* special case, quit selection and set cursor */
1467         if (has_sel && !select) {
1468                 if (jump_all) {
1469                         but->selsta = but->selend= but->pos = direction ? len : 0;
1470                 }
1471                 else {
1472                         if (direction) {
1473                                 but->selsta = but->pos = but->selend;
1474                         }
1475                         else {
1476                                 but->pos = but->selend = but->selsta;
1477                         }
1478                 }
1479                 data->selextend = 0;
1480         }
1481         else {
1482                 ui_textedit_step_utf8(str, len, &but->pos, direction, jump, jump_all);
1483
1484                 if(select) {
1485                         /* existing selection */
1486                         if (has_sel) {
1487
1488                                 if(data->selextend == 0) {
1489                                         data->selextend= EXTEND_RIGHT;
1490                                 }
1491
1492                                 if (direction) {
1493                                         if (data->selextend == EXTEND_RIGHT) {
1494                                                 but->selend= but->pos;
1495                                         }
1496                                         else {
1497                                                 but->selsta= but->pos;
1498                                         }
1499                                 }
1500                                 else {
1501                                         if (data->selextend == EXTEND_LEFT) {
1502                                                 but->selsta= but->pos;
1503                                         }
1504                                         else {
1505                                                 but->selend= but->pos;
1506                                         }
1507                                 }
1508
1509                                 if (but->selend < but->selsta) {
1510                                         SWAP(short, but->selsta, but->selend);
1511                                         data->selextend= (data->selextend == EXTEND_RIGHT) ? EXTEND_LEFT : EXTEND_RIGHT;
1512                                 }
1513
1514                         } /* new selection */
1515                         else {
1516                                 if (direction) {
1517                                         data->selextend= EXTEND_RIGHT;
1518                                         but->selend= but->pos;
1519                                         but->selsta= pos_prev;
1520                                 }
1521                                 else {
1522                                         data->selextend= EXTEND_LEFT;
1523                                         but->selend= pos_prev;
1524                                         but->selsta= but->pos;
1525                                 }
1526                         }
1527                 }
1528         }
1529 }
1530
1531 static int ui_textedit_delete(uiBut *but, uiHandleButtonData *data, int direction, const int all, const int jump)
1532 {
1533         char *str= data->str;
1534         const int len= strlen(str);
1535
1536         int x, changed= 0;
1537
1538         if(all) {
1539                 if(len) changed=1;
1540                 str[0]= 0;
1541                 but->pos= 0;
1542         }
1543         else if(direction) { /* delete */
1544                 if ((but->selend - but->selsta) > 0) {
1545                         changed= ui_textedit_delete_selection(but, data);
1546                 }
1547                 else if(but->pos>=0 && but->pos<len) {
1548                         short pos= but->pos;
1549                         int step;
1550                         ui_textedit_step_utf8(str, len, &pos, direction, jump, all);
1551                         step= pos - but->pos;
1552                         for(x=but->pos; x<len; x++)
1553                                 str[x]= str[x+step];
1554                         str[len-step]='\0';
1555                         changed= 1;
1556                 }
1557         }
1558         else { /* backspace */
1559                 if(len!=0) {
1560                         if ((but->selend - but->selsta) > 0) {
1561                                 changed= ui_textedit_delete_selection(but, data);
1562                         }
1563                         else if(but->pos>0) {
1564                                 short pos= but->pos;
1565                                 int step;
1566
1567                                 ui_textedit_step_utf8(str, len, &pos, direction, jump, all);
1568                                 step= but->pos - pos;
1569
1570                                 for(x=but->pos; x<len; x++)
1571                                         str[x-step]= str[x];
1572                                 str[len-step]='\0';
1573
1574                                 but->pos -= step;
1575                                 changed= 1;
1576                         }
1577                 } 
1578         }
1579
1580         return changed;
1581 }
1582
1583 static int ui_textedit_autocomplete(bContext *C, uiBut *but, uiHandleButtonData *data)
1584 {
1585         char *str;
1586         int changed= 1;
1587
1588         str= data->str;
1589
1590         if(data->searchbox)
1591                 ui_searchbox_autocomplete(C, data->searchbox, but, data->str);
1592         else
1593                 but->autocomplete_func(C, str, but->autofunc_arg);
1594
1595         but->pos= strlen(str);
1596         but->selsta= but->selend= but->pos;
1597
1598         return changed;
1599 }
1600
1601 static int ui_textedit_copypaste(uiBut *but, uiHandleButtonData *data, int paste, int copy, int cut)
1602 {
1603         char buf[UI_MAX_DRAW_STR]={0};
1604         char *str, *p, *pbuf;
1605         int len, x, i, changed= 0;
1606
1607         str= data->str;
1608         len= strlen(str);
1609         
1610         /* paste */
1611         if (paste) {
1612                 /* extract the first line from the clipboard */
1613                 p = pbuf= WM_clipboard_text_get(0);
1614
1615                 if(p && p[0]) {
1616                         unsigned int y;
1617                         i= 0;
1618                         while (*p && *p!='\r' && *p!='\n' && i<UI_MAX_DRAW_STR-1) {
1619                                 buf[i++]=*p;
1620                                 p++;
1621                         }
1622                         buf[i]= 0;
1623
1624                         /* paste over the current selection */
1625                         if ((but->selend - but->selsta) > 0) {
1626                                 ui_textedit_delete_selection(but, data);
1627                                 len= strlen(str);
1628                         }
1629                         
1630                         for (y=0; y<strlen(buf); y++)
1631                         {
1632                                 /* add contents of buffer */
1633                                 if(len+1 < data->maxlen) {
1634                                         for(x= data->maxlen; x>but->pos; x--)
1635                                                 str[x]= str[x-1];
1636                                         str[but->pos]= buf[y];
1637                                         but->pos++; 
1638                                         len++;
1639                                         str[len]= '\0';
1640                                 }
1641                         }
1642
1643                         changed= 1;
1644                 }
1645
1646                 if(pbuf)
1647                         MEM_freeN(pbuf);
1648         }
1649         /* cut & copy */
1650         else if (copy || cut) {
1651                 /* copy the contents to the copypaste buffer */
1652                 for(x= but->selsta; x <= but->selend; x++) {
1653                         if (x==but->selend)
1654                                 buf[x] = '\0';
1655                         else
1656                                 buf[(x - but->selsta)] = str[x];
1657                 }
1658
1659                 WM_clipboard_text_set(buf, 0);
1660                 
1661                 /* for cut only, delete the selection afterwards */
1662                 if(cut)
1663                         if((but->selend - but->selsta) > 0)
1664                                 changed= ui_textedit_delete_selection(but, data);
1665         } 
1666
1667         return changed;
1668 }
1669
1670 static void ui_textedit_begin(bContext *C, uiBut *but, uiHandleButtonData *data)
1671 {
1672         if(data->str) {
1673                 MEM_freeN(data->str);
1674                 data->str= NULL;
1675         }
1676
1677         /* retrieve string */
1678         data->maxlen= ui_get_but_string_max_length(but);
1679         data->str= MEM_callocN(sizeof(char)*data->maxlen + 1, "textedit str");
1680         ui_get_but_string(but, data->str, data->maxlen);
1681
1682         if(ELEM3(but->type, NUM, NUMABS, NUMSLI)) {
1683                 /* XXX: we dont have utf editing yet so for numbers its best to strip out utf chars 
1684                  * this is so the deg' synbol isnt included in number editing fields: bug 22274 */
1685                 int i;
1686                 for(i=0; data->str[i]; i++) {
1687                         if(!isascii(data->str[i])) {
1688                                 /* no stripping actually: just convert to alt name */
1689                                 ui_convert_to_unit_alt_name(but, data->str, data->maxlen);
1690                                 break;
1691                         }
1692                 }
1693         }
1694         
1695         
1696         data->origstr= BLI_strdup(data->str);
1697         data->selextend= 0;
1698         data->selstartx= 0;
1699
1700         /* set cursor pos to the end of the text */
1701         but->editstr= data->str;
1702         but->pos= strlen(data->str);
1703         but->selsta= 0;
1704         but->selend= strlen(data->str);
1705
1706         /* optional searchbox */
1707         if(but->type==SEARCH_MENU) {
1708                 data->searchbox= ui_searchbox_create(C, data->region, but);
1709                 ui_searchbox_update(C, data->searchbox, but, 1); /* 1= reset */
1710         }
1711         
1712         ui_check_but(but);
1713         
1714         WM_cursor_modal(CTX_wm_window(C), BC_TEXTEDITCURSOR);
1715 }
1716
1717 static void ui_textedit_end(bContext *C, uiBut *but, uiHandleButtonData *data)
1718 {
1719         if(but) {
1720                 if(ui_is_utf8_but(but)) {
1721                         int strip= BLI_utf8_invalid_strip(but->editstr, strlen(but->editstr));
1722                         /* not a file?, strip non utf-8 chars */
1723                         if(strip) {
1724                                 /* wont happen often so isnt that annoying to keep it here for a while */
1725                                 printf("%s: invalid utf8 - stripped chars %d\n", __func__, strip);
1726                         }
1727                 }
1728                 
1729                 if(data->searchbox) {
1730                         if(data->cancel==0)
1731                                 ui_searchbox_apply(but, data->searchbox);
1732
1733                         ui_searchbox_free(C, data->searchbox);
1734                         data->searchbox= NULL;
1735                 }
1736                 
1737                 but->editstr= NULL;
1738                 but->pos= -1;
1739         }
1740         
1741         WM_cursor_restore(CTX_wm_window(C));
1742 }
1743
1744 static void ui_textedit_next_but(uiBlock *block, uiBut *actbut, uiHandleButtonData *data)
1745 {
1746         uiBut *but;
1747
1748         /* label and roundbox can overlap real buttons (backdrops...) */
1749         if(ELEM4(actbut->type, LABEL, SEPR, ROUNDBOX, LISTBOX))
1750                 return;
1751
1752         for(but= actbut->next; but; but= but->next) {
1753                 if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
1754                         if(!(but->flag & UI_BUT_DISABLED)) {
1755                                 data->postbut= but;
1756                                 data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
1757                                 return;
1758                         }
1759                 }
1760         }
1761         for(but= block->buttons.first; but!=actbut; but= but->next) {
1762                 if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
1763                         if(!(but->flag & UI_BUT_DISABLED)) {
1764                                 data->postbut= but;
1765                                 data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
1766                                 return;
1767                         }
1768                 }
1769         }
1770 }
1771
1772 static void ui_textedit_prev_but(uiBlock *block, uiBut *actbut, uiHandleButtonData *data)
1773 {
1774         uiBut *but;
1775
1776         /* label and roundbox can overlap real buttons (backdrops...) */
1777         if(ELEM4(actbut->type, LABEL, SEPR, ROUNDBOX, LISTBOX))
1778                 return;
1779
1780         for(but= actbut->prev; but; but= but->prev) {
1781                 if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
1782                         if(!(but->flag & UI_BUT_DISABLED)) {
1783                                 data->postbut= but;
1784                                 data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
1785                                 return;
1786                         }
1787                 }
1788         }
1789         for(but= block->buttons.last; but!=actbut; but= but->prev) {
1790                 if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
1791                         if(!(but->flag & UI_BUT_DISABLED)) {
1792                                 data->postbut= but;
1793                                 data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
1794                                 return;
1795                         }
1796                 }
1797         }
1798 }
1799
1800
1801 static void ui_do_but_textedit(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
1802 {
1803         int mx, my, changed= 0, inbox=0, update= 0, retval= WM_UI_HANDLER_CONTINUE;
1804
1805         switch(event->type) {
1806                 case WHEELUPMOUSE:
1807                 case WHEELDOWNMOUSE:
1808                 case MOUSEMOVE:
1809                         if(data->searchbox)
1810                                 ui_searchbox_event(C, data->searchbox, but, event);
1811                         
1812                         break;
1813                 case RIGHTMOUSE:
1814                 case ESCKEY:
1815                         data->cancel= 1;
1816                         data->escapecancel= 1;
1817                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1818                         retval= WM_UI_HANDLER_BREAK;
1819                         break;
1820                 case LEFTMOUSE: {
1821                         
1822                         /* exit on LMB only on RELEASE for searchbox, to mimic other popups, and allow multiple menu levels */
1823                         if(data->searchbox)
1824                                 inbox= ui_searchbox_inside(data->searchbox, event->x, event->y);
1825
1826                         if(event->val==KM_PRESS) {
1827                                 mx= event->x;
1828                                 my= event->y;
1829                                 ui_window_to_block(data->region, block, &mx, &my);
1830
1831                                 if (ui_but_contains_pt(but, mx, my)) {
1832                                         ui_textedit_set_cursor_pos(but, data, mx);
1833                                         but->selsta = but->selend = but->pos;
1834                                         data->selstartx= mx;
1835
1836                                         button_activate_state(C, but, BUTTON_STATE_TEXT_SELECTING);
1837                                         retval= WM_UI_HANDLER_BREAK;
1838                                 }
1839                                 else if(inbox==0) {
1840                                         /* if searchbox, click outside will cancel */
1841                                         if(data->searchbox)
1842                                                 data->cancel= data->escapecancel= 1;
1843                                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1844                                         retval= WM_UI_HANDLER_BREAK;
1845                                 }
1846                         }
1847                         else if(inbox) {
1848                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1849                                 retval= WM_UI_HANDLER_BREAK;
1850                         }
1851                         break;
1852                 }
1853         }
1854
1855         if(event->val==KM_PRESS) {
1856                 switch (event->type) {
1857                         case VKEY:
1858                         case XKEY:
1859                         case CKEY:
1860                                 if(event->ctrl || event->oskey) {
1861                                         if(event->type == VKEY)
1862                                                 changed= ui_textedit_copypaste(but, data, 1, 0, 0);
1863                                         else if(event->type == CKEY)
1864                                                 changed= ui_textedit_copypaste(but, data, 0, 1, 0);
1865                                         else if(event->type == XKEY)
1866                                                 changed= ui_textedit_copypaste(but, data, 0, 0, 1);
1867
1868                                         retval= WM_UI_HANDLER_BREAK;
1869                                 }
1870                                 break;
1871                         case RIGHTARROWKEY:
1872                                 ui_textedit_move(but, data, 1, event->shift, event->ctrl, FALSE);
1873                                 retval= WM_UI_HANDLER_BREAK;
1874                                 break;
1875                         case LEFTARROWKEY:
1876                                 ui_textedit_move(but, data, 0, event->shift, event->ctrl, FALSE);
1877                                 retval= WM_UI_HANDLER_BREAK;
1878                                 break;
1879                         case DOWNARROWKEY:
1880                                 if(data->searchbox) {
1881                                         ui_searchbox_event(C, data->searchbox, but, event);
1882                                         break;
1883                                 }
1884                                 /* pass on purposedly */
1885                         case ENDKEY:
1886                                 ui_textedit_move(but, data, 1, event->shift, TRUE, TRUE);
1887                                 retval= WM_UI_HANDLER_BREAK;
1888                                 break;
1889                         case UPARROWKEY:
1890                                 if(data->searchbox) {
1891                                         ui_searchbox_event(C, data->searchbox, but, event);
1892                                         break;
1893                                 }
1894                                 /* pass on purposedly */
1895                         case HOMEKEY:
1896                                 ui_textedit_move(but, data, 0, event->shift, TRUE, TRUE);
1897                                 retval= WM_UI_HANDLER_BREAK;
1898                                 break;
1899                         case PADENTER:
1900                         case RETKEY:
1901                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1902                                 retval= WM_UI_HANDLER_BREAK;
1903                                 break;
1904                         case DELKEY:
1905                                 changed= ui_textedit_delete(but, data, 1, 0, event->ctrl);
1906                                 retval= WM_UI_HANDLER_BREAK;
1907                                 break;
1908
1909                         case BACKSPACEKEY:
1910                                 changed= ui_textedit_delete(but, data, 0, event->shift, event->ctrl);
1911                                 retval= WM_UI_HANDLER_BREAK;
1912                                 break;
1913                                 
1914                         case TABKEY:
1915                                 /* there is a key conflict here, we can't tab with autocomplete */
1916                                 if(but->autocomplete_func || data->searchbox) {
1917                                         changed= ui_textedit_autocomplete(C, but, data);
1918                                         update= 1; /* do live update for tab key */
1919                                 }
1920                                 /* the hotkey here is not well defined, was G.qual so we check all */
1921                                 else if(event->shift || event->ctrl || event->alt || event->oskey) {
1922                                         ui_textedit_prev_but(block, but, data);
1923                                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1924                                 }
1925                                 else {
1926                                         ui_textedit_next_but(block, but, data);
1927                                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1928                                 }
1929                                 retval= WM_UI_HANDLER_BREAK;
1930                                 break;
1931                 }
1932
1933                 if(event->ascii && (retval == WM_UI_HANDLER_CONTINUE)) {
1934                         char ascii = event->ascii;
1935
1936                         /* exception that's useful for number buttons, some keyboard
1937                            numpads have a comma instead of a period */
1938                         if(ELEM3(but->type, NUM, NUMABS, NUMSLI))
1939                                 if(event->type == PADPERIOD && ascii == ',')
1940                                         ascii = '.';
1941
1942                         changed= ui_textedit_type_ascii(but, data, ascii);
1943                         retval= WM_UI_HANDLER_BREAK;
1944                         
1945                 }
1946                 /* textbutton with magnifier icon: do live update for search button */
1947                 if(but->icon==ICON_VIEWZOOM)
1948                         update= 1;
1949         }
1950
1951         if(changed) {
1952                 /* only update when typing for TAB key */
1953                 if(update && data->interactive) ui_apply_button(C, block, but, data, 1);
1954                 else ui_check_but(but);
1955                 but->changed= TRUE;
1956                 
1957                 if(data->searchbox)
1958                         ui_searchbox_update(C, data->searchbox, but, 1); /* 1 = reset */
1959         }
1960
1961         if(changed || (retval == WM_UI_HANDLER_BREAK))
1962                 ED_region_tag_redraw(data->region);
1963 }
1964
1965 static void ui_do_but_textedit_select(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
1966 {
1967         int mx, my, retval= WM_UI_HANDLER_CONTINUE;
1968
1969         switch(event->type) {
1970                 case MOUSEMOVE: {
1971                         mx= event->x;
1972                         my= event->y;
1973                         ui_window_to_block(data->region, block, &mx, &my);
1974
1975                         ui_textedit_set_cursor_select(but, data, mx);
1976                         retval= WM_UI_HANDLER_BREAK;
1977                         break;
1978                 }
1979                 case LEFTMOUSE:
1980                         if(event->val == KM_RELEASE)
1981                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
1982                         retval= WM_UI_HANDLER_BREAK;
1983                         break;
1984         }
1985
1986         if(retval == WM_UI_HANDLER_BREAK) {
1987                 ui_check_but(but);
1988                 ED_region_tag_redraw(data->region);
1989         }
1990 }
1991
1992 /* ************* number editing for various types ************* */
1993
1994 static void ui_numedit_begin(uiBut *but, uiHandleButtonData *data)
1995 {
1996         if(but->type == BUT_CURVE) {
1997                 but->editcumap= (CurveMapping*)but->poin;
1998         }
1999         else if(but->type == BUT_COLORBAND) {
2000                 data->coba= (ColorBand*)but->poin;
2001                 but->editcoba= data->coba;
2002         }
2003         else if(ELEM3(but->type, BUT_NORMAL, HSVCUBE, HSVCIRCLE)) {
2004                 ui_get_but_vectorf(but, data->origvec);
2005                 copy_v3_v3(data->vec, data->origvec);
2006                 but->editvec= data->vec;
2007         }
2008         else {
2009                 float softrange, softmin, softmax;
2010
2011                 data->startvalue= ui_get_but_val(but);
2012                 data->origvalue= data->startvalue;
2013                 data->value= data->origvalue;
2014                 but->editval= &data->value;
2015
2016                 softmin= but->softmin;
2017                 softmax= but->softmax;
2018                 softrange= softmax - softmin;
2019
2020                 data->dragfstart= (softrange == 0.0f)? 0.0f: ((float)data->value - softmin)/softrange;
2021                 data->dragf= data->dragfstart;
2022         }
2023
2024         data->dragchange= 0;
2025         data->draglock= 1;
2026 }
2027
2028 static void ui_numedit_end(uiBut *but, uiHandleButtonData *data)
2029 {
2030         but->editval= NULL;
2031         but->editvec= NULL;
2032         but->editcoba= NULL;
2033         but->editcumap= NULL;
2034
2035         data->dragstartx= 0;
2036         data->draglastx= 0;
2037         data->dragchange= 0;
2038         data->dragcbd= NULL;
2039         data->dragsel= 0;
2040 }
2041
2042 static void ui_numedit_apply(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data)
2043 {
2044         if(data->interactive) ui_apply_button(C, block, but, data, 1);
2045         else ui_check_but(but);
2046
2047         ED_region_tag_redraw(data->region);
2048 }
2049
2050 /* ****************** menu opening for various types **************** */
2051
2052 static void ui_blockopen_begin(bContext *C, uiBut *but, uiHandleButtonData *data)
2053 {
2054         uiBlockCreateFunc func= NULL;
2055         uiBlockHandleCreateFunc handlefunc= NULL;
2056         uiMenuCreateFunc menufunc= NULL;
2057         char *menustr= NULL;
2058         void *arg= NULL;
2059
2060         switch(but->type) {
2061                 case BLOCK:
2062                 case PULLDOWN:
2063                         if(but->menu_create_func) {
2064                                 menufunc= but->menu_create_func;
2065                                 arg= but->poin;
2066                         }
2067                         else {
2068                                 func= but->block_create_func;
2069                                 arg= but->poin?but->poin:but->func_argN;
2070                         }
2071                         break;
2072                 case MENU:
2073                         if(but->menu_create_func) {
2074                                 menufunc= but->menu_create_func;
2075                                 arg= but->poin;
2076                         }
2077                         else {
2078                                 data->origvalue= ui_get_but_val(but);
2079                                 data->value= data->origvalue;
2080                                 but->editval= &data->value;
2081
2082                                 menustr= but->str;
2083                         }
2084                         break;
2085                 case ICONROW:
2086                         menufunc= ui_block_func_ICONROW;
2087                         arg= but;
2088                         break;
2089                 case ICONTEXTROW:
2090                         menufunc= ui_block_func_ICONTEXTROW;
2091                         arg= but;
2092                         break;
2093                 case COL:
2094                         ui_get_but_vectorf(but, data->origvec);
2095                         VECCOPY(data->vec, data->origvec);
2096                         but->editvec= data->vec;
2097
2098                         handlefunc= ui_block_func_COL;
2099                         arg= but;
2100                         break;
2101         }
2102
2103         if(func || handlefunc) {
2104                 data->menu= ui_popup_block_create(C, data->region, but, func, handlefunc, arg);
2105                 if(but->block->handle)
2106                         data->menu->popup= but->block->handle->popup;
2107         }
2108         else if(menufunc || menustr) {
2109                 data->menu= ui_popup_menu_create(C, data->region, but, menufunc, arg, menustr);
2110                 if(but->block->handle)
2111                         data->menu->popup= but->block->handle->popup;
2112         }
2113
2114         /* this makes adjacent blocks auto open from now on */
2115         //if(but->block->auto_open==0) but->block->auto_open= 1;
2116 }
2117
2118 static void ui_blockopen_end(bContext *C, uiBut *but, uiHandleButtonData *data)
2119 {
2120         if(but) {
2121                 but->editval= NULL;
2122                 but->editvec= NULL;
2123
2124                 but->block->auto_open_last= PIL_check_seconds_timer();
2125         }
2126
2127         if(data->menu) {
2128                 ui_popup_block_free(C, data->menu);
2129                 data->menu= NULL;
2130         }
2131 }
2132
2133 /* ***************** events for different button types *************** */
2134
2135 static int ui_do_but_BUT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2136 {
2137         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2138                 if(event->type == LEFTMOUSE && event->val==KM_PRESS) {
2139                         button_activate_state(C, but, BUTTON_STATE_WAIT_RELEASE);
2140                         return WM_UI_HANDLER_BREAK;
2141                 }
2142                 else if(event->type == LEFTMOUSE && but->block->handle) {
2143                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2144                         return WM_UI_HANDLER_BREAK;
2145                 }
2146                 else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS) {
2147                         button_activate_state(C, but, BUTTON_STATE_WAIT_FLASH);
2148                         return WM_UI_HANDLER_BREAK;
2149                 }
2150         }
2151         else if(data->state == BUTTON_STATE_WAIT_RELEASE) {
2152                 if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
2153                         if(!(but->flag & UI_SELECT))
2154                                 data->cancel= 1;
2155                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2156                         return WM_UI_HANDLER_BREAK;
2157                 }
2158         }
2159
2160         return WM_UI_HANDLER_CONTINUE;
2161 }
2162
2163 static int ui_do_but_HOTKEYEVT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2164 {
2165         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2166                 if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
2167                         but->drawstr[0]= 0;
2168                         but->modifier_key= 0;
2169                         button_activate_state(C, but, BUTTON_STATE_WAIT_KEY_EVENT);
2170                         return WM_UI_HANDLER_BREAK;
2171                 }
2172         }
2173         else if(data->state == BUTTON_STATE_WAIT_KEY_EVENT) {
2174                 
2175                 if(event->type == MOUSEMOVE)
2176                         return WM_UI_HANDLER_CONTINUE;
2177                 
2178                 if(event->type == LEFTMOUSE && event->val==KM_PRESS) {
2179                         /* only cancel if click outside the button */
2180                         if(ui_mouse_inside_button(but->active->region, but, event->x, event->y) == 0) {
2181                                 /* data->cancel doesnt work, this button opens immediate */
2182                                 if(but->flag & UI_BUT_IMMEDIATE)
2183                                         ui_set_but_val(but, 0);
2184                                 else
2185                                         data->cancel= 1;
2186                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2187                                 return WM_UI_HANDLER_BREAK;
2188                         }
2189                 }
2190                 
2191                 /* always set */
2192                 but->modifier_key = 0;
2193                 if(event->shift)
2194                         but->modifier_key |= KM_SHIFT;
2195                 if(event->alt)
2196                         but->modifier_key |= KM_ALT;
2197                 if(event->ctrl)
2198                         but->modifier_key |= KM_CTRL;
2199                 if(event->oskey)
2200                         but->modifier_key |= KM_OSKEY;
2201                 
2202                 ui_check_but(but);
2203                 ED_region_tag_redraw(data->region);
2204                         
2205                 if(event->val==KM_PRESS) {
2206                         if(ISHOTKEY(event->type)) { 
2207                                 
2208                                 if(WM_key_event_string(event->type)[0])
2209                                         ui_set_but_val(but, event->type);
2210                                 else
2211                                         data->cancel= 1;
2212                                 
2213                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2214                                 return WM_UI_HANDLER_BREAK;
2215                         }
2216                         else if(event->type == ESCKEY) {
2217                                 data->cancel= 1;
2218                                 data->escapecancel= 1;
2219                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2220                         }
2221                         
2222                 }
2223         }
2224         
2225         return WM_UI_HANDLER_CONTINUE;
2226 }
2227
2228 static int ui_do_but_KEYEVT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2229 {
2230         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2231                 if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
2232                         button_activate_state(C, but, BUTTON_STATE_WAIT_KEY_EVENT);
2233                         return WM_UI_HANDLER_BREAK;
2234                 }
2235         }
2236         else if(data->state == BUTTON_STATE_WAIT_KEY_EVENT) {
2237                 if(event->type == MOUSEMOVE)
2238                         return WM_UI_HANDLER_CONTINUE;
2239
2240                 if(event->val==KM_PRESS) {
2241                         if(WM_key_event_string(event->type)[0])
2242                                 ui_set_but_val(but, event->type);
2243                         else
2244                                 data->cancel= 1;
2245
2246                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2247                 }
2248         }
2249
2250         return WM_UI_HANDLER_CONTINUE;
2251 }
2252
2253 static int ui_do_but_TEX(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2254 {
2255         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2256                 if(ELEM(event->type, LEFTMOUSE, EVT_BUT_OPEN) && event->val==KM_PRESS) {
2257                         if(but->dt == UI_EMBOSSN && !event->ctrl);
2258                         else {
2259                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2260                                 return WM_UI_HANDLER_BREAK;
2261                         }
2262                 }
2263         }
2264         else if(data->state == BUTTON_STATE_TEXT_EDITING) {
2265                 ui_do_but_textedit(C, block, but, data, event);
2266                 return WM_UI_HANDLER_BREAK;
2267         }
2268         else if(data->state == BUTTON_STATE_TEXT_SELECTING) {
2269                 ui_do_but_textedit_select(C, block, but, data, event);
2270                 return WM_UI_HANDLER_BREAK;
2271         }
2272
2273         return WM_UI_HANDLER_CONTINUE;
2274 }
2275
2276 static int ui_do_but_TOG(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2277 {
2278         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2279                 if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
2280                         data->togdual= event->ctrl;
2281                         data->togonly= !event->shift;
2282                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2283                         return WM_UI_HANDLER_BREAK;
2284                 }
2285         }
2286         return WM_UI_HANDLER_CONTINUE;
2287 }
2288
2289 static int ui_do_but_EXIT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2290 {
2291         
2292         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2293
2294                 /* first handle click on icondrag type button */
2295                 if(event->type==LEFTMOUSE && but->dragpoin) {
2296                         if(ui_but_mouse_inside_icon(but, data->region, event)) {
2297                                 
2298                                 /* tell the button to wait and keep checking further events to
2299                                  * see if it should start dragging */
2300                                 button_activate_state(C, but, BUTTON_STATE_WAIT_DRAG);
2301                                 data->dragstartx= event->x;
2302                                 data->dragstarty= event->y;
2303                                 return WM_UI_HANDLER_CONTINUE;
2304                         }
2305                 }
2306                 
2307                 if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
2308                         int ret = WM_UI_HANDLER_BREAK;
2309                         /* XXX (a bit ugly) Special case handling for filebrowser drag button */
2310                         if(but->dragpoin && but->imb && ui_but_mouse_inside_icon(but, data->region, event)) {
2311                                 ret = WM_UI_HANDLER_CONTINUE;
2312                         }
2313                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2314                         return ret;
2315                 }
2316         }
2317         else if(data->state == BUTTON_STATE_WAIT_DRAG) {
2318                 
2319                 /* this function also ends state */
2320                 if(ui_but_start_drag(C, but, data, event)) {
2321                         return WM_UI_HANDLER_BREAK;
2322                 }
2323                 
2324                 /* If the mouse has been pressed and released, getting to 
2325                  * this point without triggering a drag, then clear the 
2326                  * drag state for this button and continue to pass on the event */
2327                 if(event->type==LEFTMOUSE && event->val==KM_RELEASE) {
2328                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2329                         return WM_UI_HANDLER_CONTINUE;
2330                 }
2331                 
2332                 /* while waiting for a drag to be triggered, always block 
2333                  * other events from getting handled */
2334                 return WM_UI_HANDLER_BREAK;
2335         }
2336         
2337         return WM_UI_HANDLER_CONTINUE;
2338 }
2339
2340 /* var names match ui_numedit_but_NUM */
2341 static float ui_numedit_apply_snapf(uiBut *but, float tempf, float softmin, float softmax, float softrange, int snap)
2342 {
2343         if(tempf==softmin || tempf==softmax || snap==0) {
2344                 /* pass */
2345         }
2346         else {
2347                 float fac= 1.0f;
2348                 
2349                 if(ui_is_but_unit(but)) {
2350                         UnitSettings *unit= but->block->unit;
2351                         int unit_type= uiButGetUnitType(but)>>16;
2352
2353                         if(bUnit_IsValid(unit->system, unit_type)) {
2354                                 fac= (float)bUnit_BaseScalar(unit->system, unit_type);
2355                                 if(ELEM3(unit_type, B_UNIT_LENGTH, B_UNIT_AREA, B_UNIT_VOLUME)) {
2356                                         fac /= unit->scale_length;
2357                                 }
2358                         }
2359                 }
2360
2361                 if(fac != 1.0f) {
2362                         /* snap in unit-space */
2363                         tempf /= fac;
2364                         /* softmin /= fac; */ /* UNUSED */
2365                         /* softmax /= fac; */ /* UNUSED */
2366                         softrange /= fac;
2367                 }
2368
2369                 if(snap==1) {
2370                         if(softrange < 2.10f) tempf= 0.1f*floorf(10.0f*tempf);
2371                         else if(softrange < 21.0f) tempf= floorf(tempf);
2372                         else tempf= 10.0f*floorf(tempf/10.0f);
2373                 }
2374                 else if(snap==2) {
2375                         if(softrange < 2.10f) tempf= 0.01f*floorf(100.0f*tempf);
2376                         else if(softrange < 21.0f) tempf= 0.1f*floorf(10.0f*tempf);
2377                         else tempf= floor(tempf);
2378                 }
2379                 
2380                 if(fac != 1.0f)
2381                         tempf *= fac;
2382         }
2383
2384         return tempf;
2385 }
2386
2387 static float ui_numedit_apply_snap(int temp, float softmin, float softmax, int snap)
2388 {
2389         if(temp==softmin || temp==softmax)
2390                 return temp;
2391
2392         switch(snap) {
2393         case 0:
2394                 break;
2395         case 1:
2396                 temp= 10*(temp/10);
2397                 break;
2398         case 2:
2399                 temp= 100*(temp/100);
2400                 break;
2401         }
2402
2403         return temp;
2404 }
2405
2406 static int ui_numedit_but_NUM(uiBut *but, uiHandleButtonData *data, float fac, int snap, int mx)
2407 {
2408         float deler, tempf, softmin, softmax, softrange;
2409         int lvalue, temp, changed= 0;
2410         
2411         if(mx == data->draglastx)
2412                 return changed;
2413         
2414         /* drag-lock - prevent unwanted scroll adjustments */
2415         /* change value (now 3) to adjust threshold in pixels */
2416         if(data->draglock) {
2417                 if(abs(mx-data->dragstartx) <= 3)
2418                         return changed;
2419
2420                 data->draglock= 0;
2421                 data->dragstartx= mx;  /* ignore mouse movement within drag-lock */
2422         }
2423
2424         softmin= but->softmin;
2425         softmax= but->softmax;
2426         softrange= softmax - softmin;
2427
2428         if(ui_is_a_warp_but(but)) {
2429                 /* Mouse location isn't screen clamped to the screen so use a linear mapping
2430                  * 2px == 1-int, or 1px == 1-ClickStep */
2431                 if(ui_is_but_float(but)) {
2432                         fac *= 0.01f*but->a1;
2433                         tempf = (float)data->startvalue + ((float)(mx - data->dragstartx) * fac);
2434                         tempf= ui_numedit_apply_snapf(but, tempf, softmin, softmax, softrange, snap);
2435
2436 #if 1           /* fake moving the click start, nicer for dragging back after passing the limit */
2437                         if(tempf < softmin) {
2438                                 data->dragstartx -= (softmin-tempf) / fac;
2439                                 tempf= softmin;
2440                         } else if (tempf > softmax) {
2441                                 data->dragstartx += (tempf-softmax) / fac;
2442                                 tempf= softmax;
2443                         }
2444 #else
2445                         CLAMP(tempf, softmin, softmax);
2446 #endif
2447
2448                         if(tempf != (float)data->value) {
2449                                 data->dragchange= 1;
2450                                 data->value= tempf;
2451                                 changed= 1;
2452                         }
2453                 }
2454                 else {
2455                         if(softrange > 256)             fac= 1.0;               /* 1px == 1 */
2456                         else if(softrange > 32) fac= 1.0/2.0;   /* 2px == 1 */
2457                         else                                    fac= 1.0/16.0;  /* 16px == 1? */
2458
2459                         temp= data->startvalue + (((double)mx - data->dragstartx) * (double)fac);
2460                         temp= ui_numedit_apply_snap(temp, softmin, softmax, snap);
2461
2462 #if 1           /* fake moving the click start, nicer for dragging back after passing the limit */
2463                         if(temp < softmin) {
2464                                 data->dragstartx -= (softmin-temp) / fac;
2465                                 temp= softmin;
2466                         } else if (temp > softmax) {
2467                                 data->dragstartx += (temp-softmax) / fac;
2468                                 temp= softmax;
2469                         }
2470 #else
2471                         CLAMP(temp, softmin, softmax);
2472 #endif
2473
2474                         if(temp != data->value) {
2475                                 data->dragchange= 1;
2476                                 data->value= temp;
2477                                 changed= 1;
2478                         }
2479                 }
2480
2481                 data->draglastx= mx;
2482         }
2483         else {
2484                 /* Use a non-linear mapping of the mouse drag especially for large floats (normal behavior) */
2485                 deler= 500;
2486                 if(!ui_is_but_float(but)) {
2487                         /* prevent large ranges from getting too out of control */
2488                         if (softrange > 600) deler = powf(softrange, 0.75);
2489                         
2490                         if (softrange < 100) deler= 200.0;
2491                         if (softrange < 25) deler= 50.0;
2492                 }
2493                 deler /= fac;
2494
2495                 if(softrange > 11) {
2496                         /* non linear change in mouse input- good for high precicsion */
2497                         data->dragf+= (((float)(mx-data->draglastx))/deler) * (fabsf(data->dragstartx-mx)*0.002f);
2498                 } else if (softrange > 129) { /* only scale large int buttons */
2499                         /* non linear change in mouse input- good for high precicsionm ints need less fine tuning */
2500                         data->dragf+= (((float)(mx-data->draglastx))/deler) * (fabsf(data->dragstartx-mx)*0.004f);
2501                 } else {
2502                         /*no scaling */
2503                         data->dragf+= ((float)(mx-data->draglastx))/deler ;
2504                 }
2505         
2506                 CLAMP(data->dragf, 0.0f, 1.0f);
2507                 data->draglastx= mx;
2508                 tempf= (softmin + data->dragf*softrange);
2509
2510
2511                 if(!ui_is_but_float(but)) {
2512                         temp= floorf(tempf + 0.5f);
2513
2514                         temp= ui_numedit_apply_snap(temp, softmin, softmax, snap);
2515
2516                         CLAMP(temp, softmin, softmax);
2517                         lvalue= (int)data->value;
2518                         
2519                         if(temp != lvalue) {
2520                                 data->dragchange= 1;
2521                                 data->value= (double)temp;
2522                                 changed= 1;
2523                         }
2524                 }
2525                 else {
2526                         temp= 0;
2527                         tempf= ui_numedit_apply_snapf(but, tempf, softmin, softmax, softrange, snap);
2528
2529                         CLAMP(tempf, softmin, softmax);
2530
2531                         if(tempf != (float)data->value) {
2532                                 data->dragchange= 1;
2533                                 data->value= tempf;
2534                                 changed= 1;
2535                         }
2536                 }
2537         }
2538
2539
2540         return changed;
2541 }
2542
2543 static int ui_do_but_NUM(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2544 {
2545         int mx, my;     /* mouse location scaled to fit the UI */
2546         int screen_mx, screen_my; /* mouse location kept at screen pixel coords */
2547         int click= 0;
2548         int retval= WM_UI_HANDLER_CONTINUE;
2549         
2550         mx= screen_mx= event->x;
2551         my= screen_my= event->y;
2552
2553         ui_window_to_block(data->region, block, &mx, &my);
2554
2555         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2556                 /* XXX hardcoded keymap check.... */
2557                 if(event->type == WHEELDOWNMOUSE && event->alt) {
2558                         mx= but->x1;
2559                         click= 1;
2560                 }
2561                 else if(event->type == WHEELUPMOUSE && event->alt) {
2562                         mx= but->x2;
2563                         click= 1;
2564                 }
2565                 else if(event->val==KM_PRESS) {
2566                         if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->ctrl) {
2567                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2568                                 retval= WM_UI_HANDLER_BREAK;
2569                         }
2570                         else if(event->type == LEFTMOUSE) {
2571                                 data->dragstartx= data->draglastx= ui_is_a_warp_but(but) ? screen_mx:mx;
2572                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2573                                 retval= WM_UI_HANDLER_BREAK;
2574                         }
2575                         else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS)
2576                                 click= 1;
2577                         else if (event->type == MINUSKEY && event->val==KM_PRESS) {
2578                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2579                                 data->value = -data->value;
2580                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2581                                 retval= WM_UI_HANDLER_BREAK;
2582                         }
2583                 }
2584                 
2585         }
2586         else if(data->state == BUTTON_STATE_NUM_EDITING) {
2587                 if(event->type == ESCKEY) {
2588                         data->cancel= 1;
2589                         data->escapecancel= 1;
2590                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2591                 }
2592                 else if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
2593                         if(data->dragchange)
2594                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2595                         else
2596                                 click= 1;
2597                 }
2598                 else if(event->type == MOUSEMOVE) {
2599                         float fac;
2600                         int snap;
2601
2602                         fac= 1.0f;
2603                         if(event->shift) fac /= 10.0f;
2604                         if(event->alt) fac /= 20.0f;
2605                         
2606                         snap= (event->ctrl)? (event->shift)? 2: 1: 0;
2607
2608                         if(ui_numedit_but_NUM(but, data, fac, snap, (ui_is_a_warp_but(but) ? screen_mx:mx)))
2609                                 ui_numedit_apply(C, block, but, data);
2610                 }
2611                 retval= WM_UI_HANDLER_BREAK;
2612         }
2613         else if(data->state == BUTTON_STATE_TEXT_EDITING) {
2614                 ui_do_but_textedit(C, block, but, data, event);
2615                 retval= WM_UI_HANDLER_BREAK;
2616         }
2617         else if(data->state == BUTTON_STATE_TEXT_SELECTING) {
2618                 ui_do_but_textedit_select(C, block, but, data, event);
2619                 retval= WM_UI_HANDLER_BREAK;
2620         }
2621         
2622         if(click) {
2623                 /* we can click on the side arrows to increment/decrement,
2624                  * or click inside to edit the value directly */
2625                 float tempf, softmin, softmax;
2626                 int temp;
2627
2628                 softmin= but->softmin;
2629                 softmax= but->softmax;
2630
2631                 if(!ui_is_but_float(but)) {
2632                         if(mx < (but->x1 + (but->x2 - but->x1)/3 - 3)) {
2633                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2634
2635                                 temp= (int)data->value - 1;
2636                                 if(temp>=softmin && temp<=softmax)
2637                                         data->value= (double)temp;
2638                                 else
2639                                         data->cancel= 1;
2640
2641                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2642                         }
2643                         else if(mx > (but->x1 + (2*(but->x2 - but->x1)/3) + 3)) {
2644                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2645
2646                                 temp= (int)data->value + 1;
2647                                 if(temp>=softmin && temp<=softmax)
2648                                         data->value= (double)temp;
2649                                 else
2650                                         data->cancel= 1;
2651
2652                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2653                         }
2654                         else
2655                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2656                 }
2657                 else {
2658                         if(mx < (but->x1 + (but->x2 - but->x1)/3 - 3)) {
2659                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2660
2661                                 tempf= (float)data->value - 0.01f * but->a1;
2662                                 if (tempf < softmin) tempf = softmin;
2663                                 data->value= tempf;
2664
2665                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2666                         }
2667                         else if(mx > but->x1 + (2*((but->x2 - but->x1)/3) + 3)) {
2668                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2669
2670                                 tempf= (float)data->value + 0.01f * but->a1;
2671                                 if (tempf > softmax) tempf = softmax;
2672                                 data->value= tempf;
2673
2674                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2675                         }
2676                         else
2677                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2678                 }
2679
2680                 retval= WM_UI_HANDLER_BREAK;
2681         }
2682         
2683         return retval;
2684 }
2685
2686 static int ui_numedit_but_SLI(uiBut *but, uiHandleButtonData *data, int shift, int ctrl, int mx)
2687 {
2688         float deler, f, tempf, softmin, softmax, softrange;
2689         int temp, lvalue, changed= 0;
2690
2691         softmin= but->softmin;
2692         softmax= but->softmax;
2693         softrange= softmax - softmin;
2694
2695         if(but->type==NUMSLI) deler= ((but->x2-but->x1) - 5.0f*but->aspect);
2696         else if(but->type==HSVSLI) deler= ((but->x2-but->x1)/2.0f - 5.0f*but->aspect);
2697         else if(but->type==SCROLL) {
2698                 int horizontal= (but->x2 - but->x1 > but->y2 - but->y1);
2699                 float size= (horizontal)? (but->x2-but->x1): -(but->y2-but->y1);
2700                 deler= size*(but->softmax - but->softmin)/(but->softmax - but->softmin + but->a1);
2701         }
2702         else deler= (but->x2-but->x1- 5.0f*but->aspect);
2703
2704         f= (float)(mx-data->dragstartx)/deler + data->dragfstart;
2705         
2706         if(shift)
2707                 f= (f-data->dragfstart)/10.0f + data->dragfstart;
2708
2709         CLAMP(f, 0.0f, 1.0f);
2710         tempf= softmin + f*softrange;
2711         temp= floorf(tempf+0.5f);
2712
2713         if(ctrl) {
2714                 if(tempf==softmin || tempf==softmax);
2715                 else if(ui_is_but_float(but)) {
2716
2717                         if(shift) {
2718                                 if(tempf==softmin || tempf==softmax);
2719                                 else if(softmax-softmin < 2.10f) tempf= 0.01f * floorf(100.0f*tempf);
2720                                 else if(softmax-softmin < 21.0f) tempf= 0.1f * floorf(10.0f*tempf);
2721                                 else tempf= floorf(tempf);
2722                         }
2723                         else {
2724                                 if(softmax-softmin < 2.10f) tempf= 0.1f * floorf(10.0f*tempf);
2725                                 else if(softmax-softmin < 21.0f) tempf= floorf(tempf);
2726                                 else tempf= 10.0f*floorf(tempf/10.0f);
2727                         }
2728                 }
2729                 else {
2730                         temp= 10*(temp/10);
2731                         tempf= temp;
2732                 }
2733         }
2734
2735         if(!ui_is_but_float(but)) {
2736                 lvalue= floor(data->value+0.5);
2737
2738                 CLAMP(temp, softmin, softmax);
2739
2740                 if(temp != lvalue) {
2741                         data->value= temp;
2742                         data->dragchange= 1;
2743                         changed= 1;
2744                 }
2745         }
2746         else {
2747                 CLAMP(tempf, softmin, softmax);
2748
2749                 if(tempf != (float)data->value) {
2750                         data->value= tempf;
2751                         data->dragchange= 1;
2752                         changed= 1;
2753                 }
2754         }
2755
2756         return changed;
2757 }
2758
2759 static int ui_do_but_SLI(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2760 {
2761         int mx, my, click= 0;
2762         int retval= WM_UI_HANDLER_CONTINUE;
2763
2764         mx= event->x;
2765         my= event->y;
2766         ui_window_to_block(data->region, block, &mx, &my);
2767
2768         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2769                 /* XXX hardcoded keymap check.... */
2770                 if(event->type == WHEELDOWNMOUSE && event->alt) {
2771                         mx= but->x1;
2772                         click= 2;
2773                 }
2774                 else if(event->type == WHEELUPMOUSE && event->alt) {
2775                         mx= but->x2;
2776                         click= 2;
2777                 }
2778                 else if(event->val==KM_PRESS) {
2779                         if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->ctrl) {
2780                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2781                                 retval= WM_UI_HANDLER_BREAK;
2782                         }
2783                         /* alt-click on sides to get "arrows" like in NUM buttons, and match wheel usage above */
2784                         else if(event->type == LEFTMOUSE && event->alt) {
2785                                 int halfpos = (but->x1 + but->x2) / 2;
2786                                 click = 2;
2787                                 if (mx < halfpos)
2788                                         mx = but->x1;
2789                                 else
2790                                         mx = but->x2;
2791                         }
2792                         else if(event->type == LEFTMOUSE) {
2793                                 data->dragstartx= mx;
2794                                 data->draglastx= mx;
2795                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2796                                 retval= WM_UI_HANDLER_BREAK;
2797                         }
2798                         else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS)
2799                                 click= 1;
2800                         else if (event->type == MINUSKEY && event->val==KM_PRESS) {
2801                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2802                                 data->value = -data->value;
2803                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2804                                 retval= WM_UI_HANDLER_BREAK;
2805                         }
2806                 }
2807         }
2808         else if(data->state == BUTTON_STATE_NUM_EDITING) {
2809                 if(event->type == ESCKEY) {
2810                         data->cancel= 1;
2811                         data->escapecancel= 1;
2812                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2813                 }
2814                 else if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
2815                         if(data->dragchange)
2816                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2817                         else
2818                                 click= 1;
2819                 }
2820                 else if(event->type == MOUSEMOVE) {
2821                         if(ui_numedit_but_SLI(but, data, event->shift, event->ctrl, mx))
2822                                 ui_numedit_apply(C, block, but, data);
2823                 }
2824                 retval= WM_UI_HANDLER_BREAK;
2825         }
2826         else if(data->state == BUTTON_STATE_TEXT_EDITING) {
2827                 ui_do_but_textedit(C, block, but, data, event);
2828                 retval= WM_UI_HANDLER_BREAK;
2829         }
2830         else if(data->state == BUTTON_STATE_TEXT_SELECTING) {
2831                 ui_do_but_textedit_select(C, block, but, data, event);
2832                 retval= WM_UI_HANDLER_BREAK;
2833         }
2834
2835         if(click) {
2836                 if (click==2) {
2837                         /* nudge slider to the left or right */
2838                         float f, tempf, softmin, softmax, softrange;
2839                         int temp;
2840                         
2841                         button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2842                         
2843                         softmin= but->softmin;
2844                         softmax= but->softmax;
2845                         softrange= softmax - softmin;
2846                         
2847                         tempf= data->value;
2848                         temp= (int)data->value;
2849
2850 #if 0
2851                         if(but->type==SLI) {
2852                                 f= (float)(mx-but->x1)/(but->x2-but->x1); /* same as below */
2853                         }
2854                         else
2855 #endif
2856                         {
2857                                 f= (float)(mx- but->x1)/(but->x2-but->x1);
2858                         }
2859                         
2860                         f= softmin + f*softrange;
2861                         
2862                         if(!ui_is_but_float(but)) {
2863                                 if(f<temp) temp--;
2864                                 else temp++;
2865                                 
2866                                 if(temp>=softmin && temp<=softmax)
2867                                         data->value= temp;
2868                                 else
2869                                         data->cancel= 1;
2870                         } 
2871                         else {
2872                                 if(f<tempf) tempf -= 0.01f;
2873                                 else tempf += 0.01f;
2874                                 
2875                                 if(tempf>=softmin && tempf<=softmax)
2876                                         data->value= tempf;
2877                                 else
2878                                         data->cancel= 1;
2879                         }
2880                         
2881                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2882                         retval= WM_UI_HANDLER_BREAK;
2883                 }
2884                 else {
2885                         /* edit the value directly */
2886                         button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2887                         retval= WM_UI_HANDLER_BREAK;
2888                 }
2889         }
2890         
2891         return retval;
2892 }
2893
2894 static int ui_do_but_SCROLL(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2895 {
2896         int mx, my /*, click= 0 */;
2897         int retval= WM_UI_HANDLER_CONTINUE;
2898         int horizontal= (but->x2 - but->x1 > but->y2 - but->y1);
2899         
2900         mx= event->x;
2901         my= event->y;
2902         ui_window_to_block(data->region, block, &mx, &my);
2903
2904         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2905                 if(event->val==KM_PRESS) {
2906                         if(event->type == LEFTMOUSE) {
2907                                 if(horizontal) {
2908                                         data->dragstartx= mx;
2909                                         data->draglastx= mx;
2910                                 }
2911                                 else {
2912                                         data->dragstartx= my;
2913                                         data->draglastx= my;
2914                                 }
2915                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2916                                 retval= WM_UI_HANDLER_BREAK;
2917                         }
2918                         /* UNUSED - otherwise code is ok, add back if needed */
2919                         /* else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS)
2920                                 click= 1;
2921                         */
2922                 }
2923         }
2924         else if(data->state == BUTTON_STATE_NUM_EDITING) {
2925                 if(event->type == ESCKEY) {
2926                         data->cancel= 1;
2927                         data->escapecancel= 1;
2928                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2929                 }
2930                 else if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
2931                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2932                 }
2933                 else if(event->type == MOUSEMOVE) {
2934                         if(ui_numedit_but_SLI(but, data, 0, 0, (horizontal)? mx: my))
2935                                 ui_numedit_apply(C, block, but, data);
2936                 }
2937
2938                 retval= WM_UI_HANDLER_BREAK;
2939         }
2940         
2941         return retval;
2942 }
2943
2944
2945 static int ui_do_but_BLOCK(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
2946 {
2947         
2948         if(data->state == BUTTON_STATE_HIGHLIGHT) {
2949                 
2950                 /* first handle click on icondrag type button */
2951                 if(event->type==LEFTMOUSE && but->dragpoin && event->val==KM_PRESS) {
2952                         if(ui_but_mouse_inside_icon(but, data->region, event)) {
2953                                 button_activate_state(C, but, BUTTON_STATE_WAIT_DRAG);
2954                                 data->dragstartx= event->x;
2955                                 data->dragstarty= event->y;
2956                                 return WM_UI_HANDLER_BREAK;
2957                         }
2958                 }
2959                 
2960                 /* regular open menu */
2961                 if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
2962                         button_activate_state(C, but, BUTTON_STATE_MENU_OPEN);
2963                         return WM_UI_HANDLER_BREAK;
2964                 }
2965                 else if(ELEM3(but->type, MENU, ICONROW, ICONTEXTROW)) {
2966                         
2967                         if(event->type == WHEELDOWNMOUSE && event->alt) {
2968                                 data->value= ui_step_name_menu(but, -1);
2969                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2970                                 ui_apply_button(C, but->block, but, data, 1);
2971                                 return WM_UI_HANDLER_BREAK;
2972                         }
2973                         else if(event->type == WHEELUPMOUSE && event->alt) {
2974                                 data->value= ui_step_name_menu(but, 1);
2975                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2976                                 ui_apply_button(C, but->block, but, data, 1);
2977                                 return WM_UI_HANDLER_BREAK;
2978                         }
2979         &nb