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 #include "DNA_screen_types.h"
  48
  49 #include "BLI_math.h"
  50 #include "BLI_blenlib.h"
  51 #include "BLI_utildefines.h"
  52 #include "BLI_string_cursor_utf8.h"
  53
  54 #include "BLF_translation.h"
  55
  56 #include "PIL_time.h"
  57
  58 #include "BKE_blender.h"
  59 #include "BKE_colortools.h"
  60 #include "BKE_context.h"
  61 #include "BKE_idprop.h"
  62 #include "BKE_report.h"
  63 #include "BKE_texture.h"
  64 #include "BKE_tracking.h"
  65 #include "BKE_unit.h"
  66
  67 #include "ED_screen.h"
  68 #include "ED_util.h"
  69 #include "ED_keyframing.h"
  70
  71 #include "UI_interface.h"
  72
  73 #include "BLF_api.h"
  74
  75 #include "interface_intern.h"
  76
  77 #include "RNA_access.h"
  78
  79 #include "WM_api.h"
  80 #include "WM_types.h"
  81
  82 /* place the mouse at the scaled down location when un-grabbing */
  83 #define USE_CONT_MOUSE_CORRECT
  84
  85 /* proto */
  86 static void ui_add_smart_controller(bContext *C, uiBut *from, uiBut *to);
  87 static void ui_add_link(bContext *C, uiBut *from, uiBut *to);
  88 static int ui_do_but_EXIT(bContext *C, uiBut *but, struct uiHandleButtonData *data, const wmEvent *event);
  89
  90 /***************** structs and defines ****************/
  91
  92 #define BUTTON_TOOLTIP_DELAY        0.500
  93 #define BUTTON_FLASH_DELAY          0.020
  94 #define MENU_SCROLL_INTERVAL        0.1
  95 #define BUTTON_AUTO_OPEN_THRESH     0.3
  96 #define BUTTON_MOUSE_TOWARDS_THRESH 1.0
  97
  98 typedef enum uiButtonActivateType {
  99         BUTTON_ACTIVATE_OVER,
 100         BUTTON_ACTIVATE,
 101         BUTTON_ACTIVATE_APPLY,
 102         BUTTON_ACTIVATE_TEXT_EDITING,
 103         BUTTON_ACTIVATE_OPEN
 104 } uiButtonActivateType;
 105
 106 typedef enum uiHandleButtonState {
 107         BUTTON_STATE_INIT,
 108         BUTTON_STATE_HIGHLIGHT,
 109         BUTTON_STATE_WAIT_FLASH,
 110         BUTTON_STATE_WAIT_RELEASE,
 111         BUTTON_STATE_WAIT_KEY_EVENT,
 112         BUTTON_STATE_NUM_EDITING,
 113         BUTTON_STATE_TEXT_EDITING,
 114         BUTTON_STATE_TEXT_SELECTING,
 115         BUTTON_STATE_MENU_OPEN,
 116         BUTTON_STATE_WAIT_DRAG,
 117         BUTTON_STATE_EXIT
 118 } uiHandleButtonState;
 119
 120 typedef struct uiHandleButtonData {
 121         wmWindowManager *wm;
 122         wmWindow *window;
 123         ARegion *region;
 124
 125         int interactive;
 126
 127         /* overall state */
 128         uiHandleButtonState state;
 129         int retval;
 130         /* booleans (could be made into flags) */
 131         char cancel, escapecancel;
 132         char applied, appliedinteractive;
 133         wmTimer *flashtimer;
 134
 135         /* edited value */
 136         char *str, *origstr;
 137         double value, origvalue, startvalue;
 138         float vec[3], origvec[3];
 139         int togdual, togonly;
 140         ColorBand *coba;
 141
 142         /* tooltip */
 143         ARegion *tooltip;
 144         wmTimer *tooltiptimer;
 145
 146         /* auto open */
 147         int used_mouse;
 148         wmTimer *autoopentimer;
 149
 150         /* text selection/editing */
 151         int maxlen, selextend, selstartx;
 152
 153         /* number editing / dragging */
 154         int draglastx, draglasty;
 155         int dragstartx, dragstarty;
 156         int dragchange, draglock, dragsel;
 157         float dragf, dragfstart;
 158         CBData *dragcbd;
 159
 160 #ifdef USE_CONT_MOUSE_CORRECT
 161         /* when ungrabbing buttons which are #ui_is_a_warp_but(), we may want to position them
 162          * FLT_MAX signifies do-nothing, use #ui_block_to_window_fl() to get this into a usable space  */
 163         float ungrab_mval[2];
 164 #endif
 165
 166         /* menu open (watch uiFreeActiveButtons) */
 167         uiPopupBlockHandle *menu;
 168         int menuretval;
 169
 170         /* search box (watch uiFreeActiveButtons) */
 171         ARegion *searchbox;
 172
 173         /* post activate */
 174         uiButtonActivateType posttype;
 175         uiBut *postbut;
 176 } uiHandleButtonData;
 177
 178 typedef struct uiAfterFunc {
 179         struct uiAfterFunc *next, *prev;
 180
 181         uiButHandleFunc func;
 182         void *func_arg1;
 183         void *func_arg2;
 184         void *func_arg3;
 185
 186         uiButHandleNFunc funcN;
 187         void *func_argN;
 188
 189         uiButHandleRenameFunc rename_func;
 190         void *rename_arg1;
 191         void *rename_orig;
 192
 193         uiBlockHandleFunc handle_func;
 194         void *handle_func_arg;
 195         int retval;
 196
 197         uiMenuHandleFunc butm_func;
 198         void *butm_func_arg;
 199         int a2;
 200
 201         wmOperatorType *optype;
 202         int opcontext;
 203         PointerRNA *opptr;
 204
 205         PointerRNA rnapoin;
 206         PropertyRNA *rnaprop;
 207
 208         bContextStore *context;
 209
 210         char undostr[BKE_UNDO_STR_MAX];
 211
 212         int autokey;
 213 } uiAfterFunc;
 214
 215 static int ui_but_contains_pt(uiBut *but, int mx, int my);
 216 static int ui_mouse_inside_button(ARegion *ar, uiBut *but, int x, int y);
 217 static void button_activate_state(bContext *C, uiBut *but, uiHandleButtonState state);
 218 static int ui_handler_region_menu(bContext *C, const wmEvent *event, void *userdata);
 219 static void ui_handle_button_activate(bContext *C, ARegion *ar, uiBut *but, uiButtonActivateType type);
 220 static void button_timers_tooltip_remove(bContext *C, uiBut *but);
 221
 222 /* ******************** menu navigation helpers ************** */
 223
 224 /* assumes event type is MOUSEPAN */
 225 void ui_pan_to_scroll(const wmEvent *event, int *type, int *val)
 226 {
 227         static int lastdy = 0;
 228         int dy = event->prevy - event->y;
 229
 230         /* This event should be originally from event->type,
 231          * converting wrong event into wheel is bad, see [#33803] */
 232         BLI_assert(*type == MOUSEPAN);
 233
 234         /* sign differs, reset */
 235         if ((dy > 0 && lastdy < 0) || (dy < 0 && lastdy > 0))
 236                 lastdy = dy;
 237         else {
 238                 lastdy += dy;
 239
 240                 if (ABS(lastdy) > (int)UI_UNIT_Y) {
 241                         int dy = event->prevy - event->y;
 242
 243                         if (U.uiflag2 & USER_TRACKPAD_NATURAL)
 244                                 dy = -dy;
 245
 246                         *val = KM_PRESS;
 247
 248                         if (dy > 0)
 249                                 *type = WHEELUPMOUSE;
 250                         else
 251                                 *type = WHEELDOWNMOUSE;
 252
 253                         lastdy = 0;
 254                 }
 255         }
 256 }
 257
 258 static int ui_but_editable(uiBut *but)
 259 {
 260         return ELEM5(but->type, LABEL, SEPR, ROUNDBOX, LISTBOX, PROGRESSBAR);
 261 }
 262
 263 static uiBut *ui_but_prev(uiBut *but)
 264 {
 265         while (but->prev) {
 266                 but = but->prev;
 267                 if (!ui_but_editable(but)) return but;
 268         }
 269         return NULL;
 270 }
 271
 272 static uiBut *ui_but_next(uiBut *but)
 273 {
 274         while (but->next) {
 275                 but = but->next;
 276                 if (!ui_but_editable(but)) return but;
 277         }
 278         return NULL;
 279 }
 280
 281 static uiBut *ui_but_first(uiBlock *block)
 282 {
 283         uiBut *but;
 284
 285         but = block->buttons.first;
 286         while (but) {
 287                 if (!ui_but_editable(but)) return but;
 288                 but = but->next;
 289         }
 290         return NULL;
 291 }
 292
 293 static uiBut *ui_but_last(uiBlock *block)
 294 {
 295         uiBut *but;
 296
 297         but = block->buttons.last;
 298         while (but) {
 299                 if (!ui_but_editable(but)) return but;
 300                 but = but->prev;
 301         }
 302         return NULL;
 303 }
 304
 305 static bool ui_is_a_warp_but(uiBut *but)
 306 {
 307         if (U.uiflag & USER_CONTINUOUS_MOUSE) {
 308                 if (ELEM7(but->type, NUM, NUMSLI, NUMABS, HSVCIRCLE, TRACKPREVIEW, HSVCUBE, BUT_CURVE)) {
 309                         return true;
 310                 }
 311         }
 312
 313         return false;
 314 }
 315
 316 static float ui_mouse_scale_warp_factor(const short shift)
 317 {
 318         return shift ? 0.05f : 1.0f;
 319 }
 320
 321 static void ui_mouse_scale_warp(uiHandleButtonData *data,
 322                                 const float mx, const float my,
 323                                 float *r_mx, float *r_my,
 324                                 const short shift)
 325 {
 326         const float fac = ui_mouse_scale_warp_factor(shift);
 327
 328         /* slow down the mouse, this is fairly picky */
 329         *r_mx = (data->dragstartx * (1.0f - fac) + mx * fac);
 330         *r_my = (data->dragstarty * (1.0f - fac) + my * fac);
 331 }
 332
 333 /* file selectors are exempt from utf-8 checks */
 334 int ui_is_but_utf8(uiBut *but)
 335 {
 336         if (but->rnaprop) {
 337                 const int subtype = RNA_property_subtype(but->rnaprop);
 338                 return !(ELEM4(subtype, PROP_FILEPATH, PROP_DIRPATH, PROP_FILENAME, PROP_BYTESTRING));
 339         }
 340         else {
 341                 return !(but->flag & UI_BUT_NO_UTF8);
 342         }
 343 }
 344
 345 /* ********************** button apply/revert ************************/
 346
 347 static ListBase UIAfterFuncs = {NULL, NULL};
 348
 349 static void ui_apply_but_func(bContext *C, uiBut *but)
 350 {
 351         uiAfterFunc *after;
 352         uiBlock *block = but->block;
 353
 354         /* these functions are postponed and only executed after all other
 355          * handling is done, i.e. menus are closed, in order to avoid conflicts
 356          * with these functions removing the buttons we are working with */
 357
 358         if (but->func || but->funcN || block->handle_func || but->rename_func ||
 359             (but->type == BUTM && block->butm_func) || but->optype || but->rnaprop)
 360         {
 361                 after = MEM_callocN(sizeof(uiAfterFunc), "uiAfterFunc");
 362
 363                 if (but->func && ELEM(but, but->func_arg1, but->func_arg2)) {
 364                         /* exception, this will crash due to removed button otherwise */
 365                         but->func(C, but->func_arg1, but->func_arg2);
 366                 }
 367                 else
 368                         after->func = but->func;
 369
 370                 after->func_arg1 = but->func_arg1;
 371                 after->func_arg2 = but->func_arg2;
 372                 after->func_arg3 = but->func_arg3;
 373
 374                 after->funcN = but->funcN;
 375                 after->func_argN = MEM_dupallocN(but->func_argN);
 376
 377                 after->rename_func = but->rename_func;
 378                 after->rename_arg1 = but->rename_arg1;
 379                 after->rename_orig = but->rename_orig; /* needs free! */
 380
 381                 after->handle_func = block->handle_func;
 382                 after->handle_func_arg = block->handle_func_arg;
 383                 after->retval = but->retval;
 384
 385                 if (but->type == BUTM) {
 386                         after->butm_func = block->butm_func;
 387                         after->butm_func_arg = block->butm_func_arg;
 388                         after->a2 = but->a2;
 389                 }
 390
 391                 after->optype = but->optype;
 392                 after->opcontext = but->opcontext;
 393                 after->opptr = but->opptr;
 394
 395                 after->rnapoin = but->rnapoin;
 396                 after->rnaprop = but->rnaprop;
 397
 398                 if (but->context)
 399                         after->context = CTX_store_copy(but->context);
 400
 401                 but->optype = NULL;
 402                 but->opcontext = 0;
 403                 but->opptr = NULL;
 404
 405                 BLI_addtail(&UIAfterFuncs, after);
 406         }
 407 }
 408
 409 static void ui_apply_autokey_undo(bContext *C, uiBut *but)
 410 {
 411         Scene *scene = CTX_data_scene(C);
 412         uiAfterFunc *after;
 413
 414         if (but->flag & UI_BUT_UNDO) {
 415                 const char *str = NULL;
 416
 417                 /* define which string to use for undo */
 418                 if (ELEM(but->type, LINK, INLINK)) str = "Add button link";
 419                 else if (ELEM(but->type, MENU, ICONTEXTROW)) str = but->drawstr;
 420                 else if (but->drawstr[0]) str = but->drawstr;
 421                 else str = but->tip;
 422
 423                 /* fallback, else we don't get an undo! */
 424                 if (str == NULL || str[0] == '\0') {
 425                         str = "Unknown Action";
 426                 }
 427
 428                 /* delayed, after all other funcs run, popups are closed, etc */
 429                 after = MEM_callocN(sizeof(uiAfterFunc), "uiAfterFunc");
 430                 BLI_strncpy(after->undostr, str, sizeof(after->undostr));
 431                 BLI_addtail(&UIAfterFuncs, after);
 432         }
 433
 434         /* try autokey */
 435         ui_but_anim_autokey(C, but, scene, scene->r.cfra);
 436
 437         /* make a little report about what we've done! */
 438         if (but->rnaprop) {
 439                 char *buf = WM_prop_pystring_assign(C, &but->rnapoin, but->rnaprop, but->rnaindex);
 440                 if (buf) {
 441                         BKE_report(CTX_wm_reports(C), RPT_PROPERTY, buf);
 442                         MEM_freeN(buf);
 443
 444                         WM_event_add_notifier(C, NC_SPACE | ND_SPACE_INFO_REPORT, NULL);
 445                 }
 446         }
 447 }
 448
 449 static void ui_apply_but_funcs_after(bContext *C)
 450 {
 451         uiAfterFunc *afterf, after;
 452         PointerRNA opptr;
 453         ListBase funcs;
 454
 455         /* copy to avoid recursive calls */
 456         funcs = UIAfterFuncs;
 457         UIAfterFuncs.first = UIAfterFuncs.last = NULL;
 458
 459         for (afterf = funcs.first; afterf; afterf = after.next) {
 460                 after = *afterf; /* copy to avoid memleak on exit() */
 461                 BLI_freelinkN(&funcs, afterf);
 462
 463                 if (after.context)
 464                         CTX_store_set(C, after.context);
 465
 466                 if (after.opptr) {
 467                         /* free in advance to avoid leak on exit */
 468                         opptr = *after.opptr,
 469                         MEM_freeN(after.opptr);
 470                 }
 471
 472                 if (after.optype)
 473                         WM_operator_name_call(C, after.optype->idname, after.opcontext, (after.opptr) ? &opptr : NULL);
 474
 475                 if (after.opptr)
 476                         WM_operator_properties_free(&opptr);
 477
 478                 if (after.rnapoin.data)
 479                         RNA_property_update(C, &after.rnapoin, after.rnaprop);
 480
 481                 if (after.context) {
 482                         CTX_store_set(C, NULL);
 483                         CTX_store_free(after.context);
 484                 }
 485
 486                 if (after.func)
 487                         after.func(C, after.func_arg1, after.func_arg2);
 488                 if (after.funcN)
 489                         after.funcN(C, after.func_argN, after.func_arg2);
 490                 if (after.func_argN)
 491                         MEM_freeN(after.func_argN);
 492
 493                 if (after.handle_func)
 494                         after.handle_func(C, after.handle_func_arg, after.retval);
 495                 if (after.butm_func)
 496                         after.butm_func(C, after.butm_func_arg, after.a2);
 497
 498                 if (after.rename_func)
 499                         after.rename_func(C, after.rename_arg1, after.rename_orig);
 500                 if (after.rename_orig)
 501                         MEM_freeN(after.rename_orig);
 502
 503                 if (after.undostr[0])
 504                         ED_undo_push(C, after.undostr);
 505         }
 506 }
 507
 508 static void ui_apply_but_BUT(bContext *C, uiBut *but, uiHandleButtonData *data)
 509 {
 510         ui_apply_but_func(C, but);
 511
 512         data->retval = but->retval;
 513         data->applied = TRUE;
 514 }
 515
 516 static void ui_apply_but_BUTM(bContext *C, uiBut *but, uiHandleButtonData *data)
 517 {
 518         ui_set_but_val(but, but->hardmin);
 519         ui_apply_but_func(C, but);
 520
 521         data->retval = but->retval;
 522         data->applied = TRUE;
 523 }
 524
 525 static void ui_apply_but_BLOCK(bContext *C, uiBut *but, uiHandleButtonData *data)
 526 {
 527         if (ELEM3(but->type, MENU, ICONROW, ICONTEXTROW))
 528                 ui_set_but_val(but, data->value);
 529
 530         ui_check_but(but);
 531         ui_apply_but_func(C, but);
 532         data->retval = but->retval;
 533         data->applied = TRUE;
 534 }
 535
 536 static void ui_apply_but_TOG(bContext *C, uiBut *but, uiHandleButtonData *data)
 537 {
 538         double value;
 539         int w, lvalue, push;
 540
 541         /* local hack... */
 542         if (but->type == BUT_TOGDUAL && data->togdual) {
 543                 if (but->pointype == UI_BUT_POIN_SHORT) {
 544                         but->poin += 2;
 545                 }
 546                 else if (but->pointype == UI_BUT_POIN_INT) {
 547                         but->poin += 4;
 548                 }
 549         }
 550
 551         value = ui_get_but_val(but);
 552         lvalue = (int)value;
 553
 554         if (but->bit) {
 555                 w = UI_BITBUT_TEST(lvalue, but->bitnr);
 556                 if (w) lvalue = UI_BITBUT_CLR(lvalue, but->bitnr);
 557                 else   lvalue = UI_BITBUT_SET(lvalue, but->bitnr);
 558
 559                 if (but->type == TOGR) {
 560                         if (!data->togonly) {
 561                                 lvalue = 1 << (but->bitnr);
 562
 563                                 ui_set_but_val(but, (double)lvalue);
 564                         }
 565                         else {
 566                                 if (lvalue == 0) lvalue = 1 << (but->bitnr);
 567                         }
 568                 }
 569
 570                 ui_set_but_val(but, (double)lvalue);
 571                 if (but->type == ICONTOG || but->type == ICONTOGN) ui_check_but(but);
 572         }
 573         else {
 574
 575                 if (value == 0.0) push = 1;
 576                 else push = 0;
 577
 578                 if (ELEM3(but->type, TOGN, ICONTOGN, OPTIONN)) push = !push;
 579                 ui_set_but_val(but, (double)push);
 580                 if (but->type == ICONTOG || but->type == ICONTOGN) ui_check_but(but);
 581         }
 582
 583         /* end local hack... */
 584         if (but->type == BUT_TOGDUAL && data->togdual) {
 585                 if (but->pointype == UI_BUT_POIN_SHORT) {
 586                         but->poin -= 2;
 587                 }
 588                 else if (but->pointype == UI_BUT_POIN_INT) {
 589                         but->poin -= 4;
 590                 }
 591         }
 592
 593         ui_apply_but_func(C, but);
 594
 595         data->retval = but->retval;
 596         data->applied = TRUE;
 597 }
 598
 599 static void ui_apply_but_ROW(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data)
 600 {
 601         uiBut *bt;
 602
 603         ui_set_but_val(but, but->hardmax);
 604
 605         /* states of other row buttons */
 606         for (bt = block->buttons.first; bt; bt = bt->next)
 607                 if (bt != but && bt->poin == but->poin && ELEM(bt->type, ROW, LISTROW))
 608                         ui_check_but(bt);
 609
 610         ui_apply_but_func(C, but);
 611
 612         data->retval = but->retval;
 613         data->applied = TRUE;
 614 }
 615
 616 static void ui_apply_but_TEX(bContext *C, uiBut *but, uiHandleButtonData *data)
 617 {
 618         if (!data->str)
 619                 return;
 620
 621         ui_set_but_string(C, but, data->str);
 622         ui_check_but(but);
 623
 624         /* give butfunc the original text too */
 625         /* feature used for bone renaming, channels, etc */
 626         /* afterfunc frees origstr */
 627         but->rename_orig = data->origstr;
 628         data->origstr = NULL;
 629         ui_apply_but_func(C, but);
 630
 631         data->retval = but->retval;
 632         data->applied = TRUE;
 633 }
 634
 635 static void ui_apply_but_NUM(bContext *C, uiBut *but, uiHandleButtonData *data)
 636 {
 637         if (data->str) {
 638                 if (ui_set_but_string(C, but, data->str)) {
 639                         data->value = ui_get_but_val(but);
 640                 }
 641                 else {
 642                         data->cancel = TRUE;
 643                         return;
 644                 }
 645         }
 646         else
 647                 ui_set_but_val(but, data->value);
 648
 649         ui_check_but(but);
 650         ui_apply_but_func(C, but);
 651
 652         data->retval = but->retval;
 653         data->applied = TRUE;
 654 }
 655
 656 static void ui_apply_but_TOG3(bContext *C, uiBut *but, uiHandleButtonData *data)
 657 {
 658         if (but->pointype == UI_BUT_POIN_SHORT) {
 659                 short *sp = (short *)but->poin;
 660
 661                 if (UI_BITBUT_TEST(sp[1], but->bitnr)) {
 662                         sp[1] = UI_BITBUT_CLR(sp[1], but->bitnr);
 663                         sp[0] = UI_BITBUT_CLR(sp[0], but->bitnr);
 664                 }
 665                 else if (UI_BITBUT_TEST(sp[0], but->bitnr)) {
 666                         sp[1] = UI_BITBUT_SET(sp[1], but->bitnr);
 667                 }
 668                 else {
 669                         sp[0] = UI_BITBUT_SET(sp[0], but->bitnr);
 670                 }
 671         }
 672         else {
 673                 if (UI_BITBUT_TEST(*(but->poin + 2), but->bitnr)) {
 674                         *(but->poin + 2) = UI_BITBUT_CLR(*(but->poin + 2), but->bitnr);
 675                         *(but->poin)     = UI_BITBUT_CLR(*(but->poin),     but->bitnr);
 676                 }
 677                 else if (UI_BITBUT_TEST(*(but->poin), but->bitnr)) {
 678                         *(but->poin + 2) = UI_BITBUT_SET(*(but->poin + 2), but->bitnr);
 679                 }
 680                 else {
 681                         *(but->poin) = UI_BITBUT_SET(*(but->poin), but->bitnr);
 682                 }
 683         }
 684
 685         ui_check_but(but);
 686         ui_apply_but_func(C, but);
 687         data->retval = but->retval;
 688         data->applied = TRUE;
 689 }
 690
 691 static void ui_apply_but_VEC(bContext *C, uiBut *but, uiHandleButtonData *data)
 692 {
 693         ui_set_but_vectorf(but, data->vec);
 694         ui_check_but(but);
 695         ui_apply_but_func(C, but);
 696
 697         data->retval = but->retval;
 698         data->applied = TRUE;
 699 }
 700
 701 static void ui_apply_but_COLORBAND(bContext *C, uiBut *but, uiHandleButtonData *data)
 702 {
 703         ui_apply_but_func(C, but);
 704         data->retval = but->retval;
 705         data->applied = TRUE;
 706 }
 707
 708 static void ui_apply_but_CURVE(bContext *C, uiBut *but, uiHandleButtonData *data)
 709 {
 710         ui_apply_but_func(C, but);
 711         data->retval = but->retval;
 712         data->applied = TRUE;
 713 }
 714
 715 static void ui_apply_but_IDPOIN(bContext *C, uiBut *but, uiHandleButtonData *data)
 716 {
 717         ui_set_but_string(C, but, data->str);
 718         ui_check_but(but);
 719         ui_apply_but_func(C, but);
 720         data->retval = but->retval;
 721         data->applied = TRUE;
 722 }
 723
 724 #ifdef WITH_INTERNATIONAL
 725 static void ui_apply_but_CHARTAB(bContext *C, uiBut *but, uiHandleButtonData *data)
 726 {
 727         ui_apply_but_func(C, but);
 728         data->retval = but->retval;
 729         data->applied = TRUE;
 730 }
 731 #endif
 732
 733 /* ****************** drag drop code *********************** */
 734
 735 static int ui_but_mouse_inside_icon(uiBut *but, ARegion *ar, const wmEvent *event)
 736 {
 737         rcti rect;
 738         int x = event->x, y = event->y;
 739
 740         ui_window_to_block(ar, but->block, &x, &y);
 741
 742         BLI_rcti_rctf_copy(&rect, &but->rect);
 743
 744         if (but->imb) {
 745                 /* use button size itself */
 746         }
 747         else if (but->flag & UI_ICON_LEFT) {
 748                 rect.xmax = rect.xmin + (BLI_rcti_size_y(&rect));
 749         }
 750         else {
 751                 int delta = BLI_rcti_size_x(&rect) - BLI_rcti_size_y(&rect);
 752                 rect.xmin += delta / 2;
 753                 rect.xmax -= delta / 2;
 754         }
 755
 756         return BLI_rcti_isect_pt(&rect, x, y);
 757 }
 758
 759 static int ui_but_start_drag(bContext *C, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
 760 {
 761         /* prevent other WM gestures to start while we try to drag */
 762         WM_gestures_remove(C);
 763
 764         if (ABS(data->dragstartx - event->x) + ABS(data->dragstarty - event->y) > U.dragthreshold) {
 765
 766                 button_activate_state(C, but, BUTTON_STATE_EXIT);
 767                 data->cancel = TRUE;
 768
 769                 if (ui_is_but_bool(but)) {
 770                         const bool is_set = (ui_get_but_val(but) != 0.0);
 771                         PointerRNA ptr;
 772                         WM_operator_properties_create(&ptr, "UI_OT_drag_toggle");
 773                         RNA_boolean_set(&ptr, "state", !is_set);
 774                         RNA_int_set(&ptr, "last_x", data->dragstartx);
 775                         RNA_int_set(&ptr, "last_y", data->dragstarty);
 776                         WM_operator_name_call(C, "UI_OT_drag_toggle", WM_OP_INVOKE_DEFAULT, &ptr);
 777                         WM_operator_properties_free(&ptr);
 778                 }
 779                 else {
 780                         wmDrag *drag;
 781
 782                         drag = WM_event_start_drag(C, but->icon, but->dragtype, but->dragpoin, ui_get_but_val(but));
 783                         if (but->imb)
 784                                 WM_event_drag_image(drag, but->imb, but->imb_scale, BLI_rctf_size_x(&but->rect), BLI_rctf_size_y(&but->rect));
 785                 }
 786                 return 1;
 787         }
 788
 789         return 0;
 790 }
 791
 792 /* ********************** linklines *********************** */
 793
 794 static void ui_delete_active_linkline(uiBlock *block)
 795 {
 796         uiBut *but;
 797         uiLink *link;
 798         uiLinkLine *line, *nline;
 799         int a, b;
 800
 801         for (but = block->buttons.first; but; but = but->next) {
 802                 if (but->type == LINK && but->link) {
 803                         for (line = but->link->lines.first; line; line = nline) {
 804                                 nline = line->next;
 805
 806                                 if (line->flag & UI_SELECT) {
 807                                         BLI_remlink(&but->link->lines, line);
 808
 809                                         link = line->from->link;
 810
 811                                         /* are there more pointers allowed? */
 812                                         if (link->ppoin) {
 813
 814                                                 if (*(link->totlink) == 1) {
 815                                                         *(link->totlink) = 0;
 816                                                         MEM_freeN(*(link->ppoin));
 817                                                         *(link->ppoin) = NULL;
 818                                                 }
 819                                                 else {
 820                                                         b = 0;
 821                                                         for (a = 0; a < (*(link->totlink)); a++) {
 822
 823                                                                 if ((*(link->ppoin))[a] != line->to->poin) {
 824                                                                         (*(link->ppoin))[b] = (*(link->ppoin))[a];
 825                                                                         b++;
 826                                                                 }
 827                                                         }
 828                                                         (*(link->totlink))--;
 829                                                 }
 830                                         }
 831                                         else {
 832                                                 *(link->poin) = NULL;
 833                                         }
 834
 835                                         MEM_freeN(line);
 836                                 }
 837                         }
 838                 }
 839         }
 840 }
 841
 842
 843 static uiLinkLine *ui_is_a_link(uiBut *from, uiBut *to)
 844 {
 845         uiLinkLine *line;
 846         uiLink *link;
 847
 848         link = from->link;
 849         if (link) {
 850                 for (line = link->lines.first; line; line = line->next) {
 851                         if (line->from == from && line->to == to) {
 852                                 return line;
 853                         }
 854                 }
 855         }
 856         return NULL;
 857 }
 858
 859 /* XXX BAD BAD HACK, fixme later **************** */
 860 /* Try to add an AND Controller between the sensor and the actuator logic bricks and to connect them all */
 861 static void ui_add_smart_controller(bContext *C, uiBut *from, uiBut *to)
 862 {
 863         Object *ob = NULL;
 864         bSensor *sens_iter;
 865         bActuator *act_to, *act_iter;
 866         bController *cont;
 867         bController ***sens_from_links;
 868         uiBut *tmp_but;
 869
 870         uiLink *link = from->link;
 871
 872         PointerRNA props_ptr, object_ptr;
 873
 874         if (link->ppoin)
 875                 sens_from_links = (bController ***)(link->ppoin);
 876         else return;
 877
 878         act_to = (bActuator *)(to->poin);
 879
 880         /* (1) get the object */
 881         CTX_DATA_BEGIN (C, Object *, ob_iter, selected_editable_objects)
 882         {
 883                 for (sens_iter = ob_iter->sensors.first; sens_iter; sens_iter = sens_iter->next) {
 884                         if (&(sens_iter->links) == sens_from_links) {
 885                                 ob = ob_iter;
 886                                 break;
 887                         }
 888                 }
 889                 if (ob) break;
 890         } CTX_DATA_END;
 891
 892         if (!ob) return;
 893
 894         /* (2) check if the sensor and the actuator are from the same object */
 895         for (act_iter = ob->actuators.first; act_iter; act_iter = (bActuator *)act_iter->next) {
 896                 if (act_iter == act_to)
 897                         break;
 898         }
 899
 900         /* only works if the sensor and the actuator are from the same object */
 901         if (!act_iter) return;
 902
 903         /* in case the linked controller is not the active one */
 904         RNA_pointer_create((ID *)ob, &RNA_Object, ob, &object_ptr);
 905
 906         WM_operator_properties_create(&props_ptr, "LOGIC_OT_controller_add");
 907         RNA_string_set(&props_ptr, "object", ob->id.name + 2);
 908
 909         /* (3) add a new controller */
 910         if (WM_operator_name_call(C, "LOGIC_OT_controller_add", WM_OP_EXEC_DEFAULT, &props_ptr) & OPERATOR_FINISHED) {
 911                 cont = (bController *)ob->controllers.last;
 912                 cont->type = CONT_LOGIC_AND; /* Quick fix to make sure we always have an AND controller. It might be nicer to make sure the operator gives us the right one though... */
 913
 914                 /* (4) link the sensor->controller->actuator */
 915                 tmp_but = MEM_callocN(sizeof(uiBut), "uiBut");
 916                 uiSetButLink(tmp_but, (void **)&cont, (void ***)&(cont->links), &(cont->totlinks), from->link->tocode, (int)to->hardmin);
 917                 tmp_but->hardmin = from->link->tocode;
 918                 tmp_but->poin = (char *)cont;
 919
 920                 tmp_but->type = INLINK;
 921                 ui_add_link(C, from, tmp_but);
 922
 923                 tmp_but->type = LINK;
 924                 ui_add_link(C, tmp_but, to);
 925
 926                 /* (5) garbage collection */
 927                 MEM_freeN(tmp_but->link);
 928                 MEM_freeN(tmp_but);
 929         }
 930         WM_operator_properties_free(&props_ptr);
 931 }
 932
 933 static void ui_add_link(bContext *C, uiBut *from, uiBut *to)
 934 {
 935         /* in 'from' we have to add a link to 'to' */
 936         uiLink *link;
 937         uiLinkLine *line;
 938         void **oldppoin;
 939         int a;
 940
 941         if ((line = ui_is_a_link(from, to))) {
 942                 line->flag |= UI_SELECT;
 943                 ui_delete_active_linkline(from->block);
 944                 return;
 945         }
 946
 947         if (from->type == INLINK && to->type == INLINK) {
 948                 return;
 949         }
 950         else if (from->type == LINK && to->type == INLINK) {
 951                 if (from->link->tocode != (int)to->hardmin) {
 952                         ui_add_smart_controller(C, from, to);
 953                         return;
 954                 }
 955         }
 956         else if (from->type == INLINK && to->type == LINK) {
 957                 if (to->link->tocode == (int)from->hardmin) {
 958                         return;
 959                 }
 960         }
 961
 962         link = from->link;
 963
 964         /* are there more pointers allowed? */
 965         if (link->ppoin) {
 966                 oldppoin = *(link->ppoin);
 967
 968                 (*(link->totlink))++;
 969                 *(link->ppoin) = MEM_callocN(*(link->totlink) * sizeof(void *), "new link");
 970
 971                 for (a = 0; a < (*(link->totlink)) - 1; a++) {
 972                         (*(link->ppoin))[a] = oldppoin[a];
 973                 }
 974                 (*(link->ppoin))[a] = to->poin;
 975
 976                 if (oldppoin) MEM_freeN(oldppoin);
 977         }
 978         else {
 979                 *(link->poin) = to->poin;
 980         }
 981
 982 }
 983
 984
 985 static void ui_apply_but_LINK(bContext *C, uiBut *but, uiHandleButtonData *data)
 986 {
 987         ARegion *ar = CTX_wm_region(C);
 988         uiBut *bt;
 989
 990         for (bt = but->block->buttons.first; bt; bt = bt->next) {
 991                 if (ui_mouse_inside_button(ar, bt, but->linkto[0] + ar->winrct.xmin, but->linkto[1] + ar->winrct.ymin) )
 992                         break;
 993         }
 994         if (bt && bt != but) {
 995                 if (!ELEM(bt->type, LINK, INLINK) || !ELEM(but->type, LINK, INLINK))
 996                         return;
 997
 998                 if (but->type == LINK) ui_add_link(C, but, bt);
 999                 else ui_add_link(C, bt, but);
1000
1001                 ui_apply_but_func(C, but);
1002                 data->retval = but->retval;
1003         }
1004         data->applied = TRUE;
1005 }
1006
1007 static void ui_apply_but_IMAGE(bContext *C, uiBut *but, uiHandleButtonData *data)
1008 {
1009         ui_apply_but_func(C, but);
1010         data->retval = but->retval;
1011         data->applied = TRUE;
1012 }
1013
1014 static void ui_apply_but_HISTOGRAM(bContext *C, uiBut *but, uiHandleButtonData *data)
1015 {
1016         ui_apply_but_func(C, but);
1017         data->retval = but->retval;
1018         data->applied = TRUE;
1019 }
1020
1021 static void ui_apply_but_WAVEFORM(bContext *C, uiBut *but, uiHandleButtonData *data)
1022 {
1023         ui_apply_but_func(C, but);
1024         data->retval = but->retval;
1025         data->applied = TRUE;
1026 }
1027
1028 static void ui_apply_but_TRACKPREVIEW(bContext *C, uiBut *but, uiHandleButtonData *data)
1029 {
1030         ui_apply_but_func(C, but);
1031         data->retval = but->retval;
1032         data->applied = TRUE;
1033 }
1034
1035
1036 static void ui_apply_button(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, int interactive)
1037 {
1038         char *editstr;
1039         double *editval;
1040         float *editvec;
1041         ColorBand *editcoba;
1042         CurveMapping *editcumap;
1043
1044         data->retval = 0;
1045
1046         /* if we cancel and have not applied yet, there is nothing to do,
1047          * otherwise we have to restore the original value again */
1048         if (data->cancel) {
1049                 if (!data->applied)
1050                         return;
1051
1052                 if (data->str) MEM_freeN(data->str);
1053                 data->str = data->origstr;
1054                 data->origstr = NULL;
1055                 data->value = data->origvalue;
1056                 data->origvalue = 0.0;
1057                 copy_v3_v3(data->vec, data->origvec);
1058                 data->origvec[0] = data->origvec[1] = data->origvec[2] = 0.0f;
1059         }
1060         else {
1061                 /* we avoid applying interactive edits a second time
1062                  * at the end with the appliedinteractive flag */
1063                 if (interactive) {
1064                         data->appliedinteractive = TRUE;
1065                 }
1066                 else if (data->appliedinteractive) {
1067                         return;
1068                 }
1069         }
1070
1071         /* ensures we are writing actual values */
1072         editstr = but->editstr;
1073         editval = but->editval;
1074         editvec = but->editvec;
1075         editcoba = but->editcoba;
1076         editcumap = but->editcumap;
1077         but->editstr = NULL;
1078         but->editval = NULL;
1079         but->editvec = NULL;
1080         but->editcoba = NULL;
1081         but->editcumap = NULL;
1082
1083         /* handle different types */
1084         switch (but->type) {
1085                 case BUT:
1086                         ui_apply_but_BUT(C, but, data);
1087                         break;
1088                 case TEX:
1089                 case SEARCH_MENU_UNLINK:
1090                 case SEARCH_MENU:
1091                         ui_apply_but_TEX(C, but, data);
1092                         break;
1093                 case TOGBUT:
1094                 case TOG:
1095                 case TOGR:
1096                 case ICONTOG:
1097                 case ICONTOGN:
1098                 case TOGN:
1099                 case BUT_TOGDUAL:
1100                 case OPTION:
1101                 case OPTIONN:
1102                         ui_apply_but_TOG(C, but, data);
1103                         break;
1104                 case ROW:
1105                 case LISTROW:
1106                         ui_apply_but_ROW(C, block, but, data);
1107                         break;
1108                 case SCROLL:
1109                 case NUM:
1110                 case NUMABS:
1111                 case SLI:
1112                 case NUMSLI:
1113                         ui_apply_but_NUM(C, but, data);
1114                         break;
1115                 case HSVSLI:
1116                         break;
1117                 case TOG3:
1118                         ui_apply_but_TOG3(C, but, data);
1119                         break;
1120                 case MENU:
1121                 case ICONROW:
1122                 case ICONTEXTROW:
1123                 case BLOCK:
1124                 case PULLDOWN:
1125                         ui_apply_but_BLOCK(C, but, data);
1126                         break;
1127                 case COLOR:
1128                         if (data->cancel)
1129                                 ui_apply_but_VEC(C, but, data);
1130                         else
1131                                 ui_apply_but_BLOCK(C, but, data);
1132                         break;
1133                 case BUTM:
1134                         ui_apply_but_BUTM(C, but, data);
1135                         break;
1136                 case BUT_NORMAL:
1137                 case HSVCUBE:
1138                 case HSVCIRCLE:
1139                         ui_apply_but_VEC(C, but, data);
1140                         break;
1141                 case BUT_COLORBAND:
1142                         ui_apply_but_COLORBAND(C, but, data);
1143                         break;
1144                 case BUT_CURVE:
1145                         ui_apply_but_CURVE(C, but, data);
1146                         break;
1147                 case IDPOIN:
1148                         ui_apply_but_IDPOIN(C, but, data);
1149                         break;
1150 #ifdef WITH_INTERNATIONAL
1151                 case CHARTAB:
1152                         ui_apply_but_CHARTAB(C, but, data);
1153                         break;
1154 #endif
1155                 case KEYEVT:
1156                 case HOTKEYEVT:
1157                         ui_apply_but_BUT(C, but, data);
1158                         break;
1159                 case LINK:
1160                 case INLINK:
1161                         ui_apply_but_LINK(C, but, data);
1162                         break;
1163                 case BUT_IMAGE:
1164                         ui_apply_but_IMAGE(C, but, data);
1165                         break;
1166                 case HISTOGRAM:
1167                         ui_apply_but_HISTOGRAM(C, but, data);
1168                         break;
1169                 case WAVEFORM:
1170                         ui_apply_but_WAVEFORM(C, but, data);
1171                         break;
1172                 case TRACKPREVIEW:
1173                         ui_apply_but_TRACKPREVIEW(C, but, data);
1174                         break;
1175                 default:
1176                         break;
1177         }
1178
1179         but->editstr = editstr;
1180         but->editval = editval;
1181         but->editvec = editvec;
1182         but->editcoba = editcoba;
1183         but->editcumap = editcumap;
1184 }
1185
1186 /* ******************* drop event ********************  */
1187
1188 /* only call if event type is EVT_DROP */
1189 static void ui_but_drop(bContext *C, const wmEvent *event, uiBut *but, uiHandleButtonData *data)
1190 {
1191         wmDrag *wmd;
1192         ListBase *drags = event->customdata; /* drop event type has listbase customdata by default */
1193
1194         for (wmd = drags->first; wmd; wmd = wmd->next) {
1195                 if (wmd->type == WM_DRAG_ID) {
1196                         /* align these types with UI_but_active_drop_name */
1197                         if (ELEM4(but->type, TEX, IDPOIN, SEARCH_MENU, SEARCH_MENU_UNLINK)) {
1198                                 ID *id = (ID *)wmd->poin;
1199
1200                                 if (but->poin == NULL && but->rnapoin.data == NULL) {}
1201                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
1202                                 BLI_strncpy(data->str, id->name + 2, data->maxlen);
1203                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1204                         }
1205                 }
1206         }
1207
1208 }
1209
1210 /* ******************* copy and paste ********************  */
1211
1212 /* c = copy, v = paste */
1213 static void ui_but_copy_paste(bContext *C, uiBut *but, uiHandleButtonData *data, char mode)
1214 {
1215         static ColorBand but_copypaste_coba = {0};
1216         char buf[UI_MAX_DRAW_STR + 1] = {0};
1217
1218         if (mode == 'v' && but->lock  == TRUE) {
1219                 return;
1220         }
1221
1222         if (mode == 'v') {
1223                 /* extract first line from clipboard in case of multi-line copies */
1224                 char *p, *pbuf = WM_clipboard_text_get(0);
1225                 p = pbuf;
1226                 if (p) {
1227                         int i = 0;
1228                         while (*p && *p != '\r' && *p != '\n' && i < UI_MAX_DRAW_STR) {
1229                                 buf[i++] = *p;
1230                                 p++;
1231                         }
1232                         buf[i] = 0;
1233                         MEM_freeN(pbuf);
1234                 }
1235         }
1236
1237         /* numeric value */
1238         if (ELEM4(but->type, NUM, NUMABS, NUMSLI, HSVSLI)) {
1239
1240                 if (but->poin == NULL && but->rnapoin.data == NULL) {
1241                         /* pass */
1242                 }
1243                 else if (mode == 'c') {
1244                         ui_get_but_string(but, buf, sizeof(buf));
1245                         WM_clipboard_text_set(buf, 0);
1246                 }
1247                 else {
1248                         double val;
1249
1250                         if (ui_set_but_string_eval_num(C, but, buf, &val)) {
1251                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
1252                                 data->value = val;
1253                                 ui_set_but_string(C, but, buf);
1254                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1255                         }
1256                 }
1257         }
1258
1259         /* RGB triple */
1260         else if (but->type == COLOR) {
1261                 float rgba[4];
1262
1263                 if (but->poin == NULL && but->rnapoin.data == NULL) {
1264                         /* pass */
1265                 }
1266                 else if (mode == 'c') {
1267                         if (RNA_property_array_length(&but->rnapoin, but->rnaprop) == 4)
1268                                 rgba[3] = RNA_property_float_get_index(&but->rnapoin, but->rnaprop, 3);
1269                         else
1270                                 rgba[3] = 1.0f;
1271
1272                         ui_get_but_vectorf(but, rgba);
1273                         /* convert to linear color to do compatible copy between gamma and non-gamma */
1274                         if (but->rnaprop && RNA_property_subtype(but->rnaprop) == PROP_COLOR_GAMMA)
1275                                 srgb_to_linearrgb_v3_v3(rgba, rgba);
1276
1277                         BLI_snprintf(buf, sizeof(buf), "[%f, %f, %f, %f]", rgba[0], rgba[1], rgba[2], rgba[3]);
1278                         WM_clipboard_text_set(buf, 0);
1279
1280                 }
1281                 else {
1282                         if (sscanf(buf, "[%f, %f, %f, %f]", &rgba[0], &rgba[1], &rgba[2], &rgba[3]) == 4) {
1283                                 /* assume linear colors in buffer */
1284                                 if (but->rnaprop && RNA_property_subtype(but->rnaprop) == PROP_COLOR_GAMMA)
1285                                         linearrgb_to_srgb_v3_v3(rgba, rgba);
1286
1287                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
1288                                 ui_set_but_vectorf(but, rgba);
1289                                 if (RNA_property_array_length(&but->rnapoin, but->rnaprop) == 4)
1290                                         RNA_property_float_set_index(&but->rnapoin, but->rnaprop, 3, rgba[3]);
1291
1292                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1293                         }
1294                 }
1295         }
1296
1297         /* text/string and ID data */
1298         else if (ELEM4(but->type, TEX, IDPOIN, SEARCH_MENU, SEARCH_MENU_UNLINK)) {
1299                 uiHandleButtonData *active_data = but->active;
1300
1301                 if (but->poin == NULL && but->rnapoin.data == NULL) {
1302                         /* pass */
1303                 }
1304                 else if (mode == 'c') {
1305                         button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
1306                         BLI_strncpy(buf, active_data->str, UI_MAX_DRAW_STR);
1307                         WM_clipboard_text_set(active_data->str, 0);
1308                         active_data->cancel = TRUE;
1309                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1310                 }
1311                 else {
1312                         button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
1313
1314                         if (ui_is_but_utf8(but)) BLI_strncpy_utf8(active_data->str, buf, active_data->maxlen);
1315                         else BLI_strncpy(active_data->str, buf, active_data->maxlen);
1316
1317                         if (ELEM(but->type, SEARCH_MENU, SEARCH_MENU_UNLINK)) {
1318                                 /* else uiSearchboxData.active member is not updated [#26856] */
1319                                 ui_searchbox_update(C, data->searchbox, but, 1);
1320                         }
1321                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1322                 }
1323         }
1324         /* colorband (not supported by system clipboard) */
1325         else if (but->type == BUT_COLORBAND) {
1326                 if (mode == 'c') {
1327                         if (but->poin == NULL)
1328                                 return;
1329
1330                         memcpy(&but_copypaste_coba, but->poin, sizeof(ColorBand));
1331                 }
1332                 else {
1333                         if (but_copypaste_coba.tot == 0)
1334                                 return;
1335
1336                         if (!but->poin)
1337                                 but->poin = MEM_callocN(sizeof(ColorBand), "colorband");
1338
1339                         button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
1340                         memcpy(data->coba, &but_copypaste_coba, sizeof(ColorBand));
1341                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1342                 }
1343         }
1344         /* operator button (any type) */
1345         else if (but->optype) {
1346                 if (mode == 'c') {
1347                         PointerRNA *opptr;
1348                         char *str;
1349                         opptr = uiButGetOperatorPtrRNA(but); /* allocated when needed, the button owns it */
1350
1351                         str = WM_operator_pystring(C, but->optype, opptr, 0);
1352
1353                         WM_clipboard_text_set(str, 0);
1354
1355                         MEM_freeN(str);
1356                 }
1357         }
1358 }
1359
1360 /* ************************ password text ******************************
1361  *
1362  * Functions to convert password strings that should not be displayed
1363  * to asterisk representation (e.g. mysecretpasswd -> *************)
1364  *
1365  * It converts every UTF-8 character to an asterisk, and also remaps
1366  * the cursor position and selection start/end.
1367  *
1368  * Note: remaping is used, because password could contain UTF-8 characters.
1369  *
1370  */
1371
1372 static int ui_text_position_from_hidden(uiBut *but, int pos)
1373 {
1374         const char *strpos;
1375         int i;
1376
1377         for (i = 0, strpos = but->drawstr; i < pos; i++)
1378                 strpos = BLI_str_find_next_char_utf8(strpos, NULL);
1379
1380         return (strpos - but->drawstr);
1381 }
1382
1383 static int ui_text_position_to_hidden(uiBut *but, int pos)
1384 {
1385         return BLI_strnlen_utf8(but->drawstr, pos);
1386 }
1387
1388 void ui_button_text_password_hide(char password_str[UI_MAX_DRAW_STR], uiBut *but, int restore)
1389 {
1390         if (!(but->rnaprop && RNA_property_subtype(but->rnaprop) == PROP_PASSWORD))
1391                 return;
1392
1393         if (restore) {
1394                 /* restore original string */
1395                 BLI_strncpy(but->drawstr, password_str, UI_MAX_DRAW_STR);
1396
1397                 /* remap cursor positions */
1398                 if (but->pos >= 0) {
1399                         but->pos = ui_text_position_from_hidden(but, but->pos);
1400                         but->selsta = ui_text_position_from_hidden(but, but->selsta);
1401                         but->selend = ui_text_position_from_hidden(but, but->selend);
1402                 }
1403         }
1404         else {
1405                 /* convert text to hidden test using asterisks (e.g. pass -> ****) */
1406                 int i, len = BLI_strlen_utf8(but->drawstr);
1407
1408                 /* remap cursor positions */
1409                 if (but->pos >= 0) {
1410                         but->pos = ui_text_position_to_hidden(but, but->pos);
1411                         but->selsta = ui_text_position_to_hidden(but, but->selsta);
1412                         but->selend = ui_text_position_to_hidden(but, but->selend);
1413                 }
1414
1415                 /* save original string */
1416                 BLI_strncpy(password_str, but->drawstr, UI_MAX_DRAW_STR);
1417
1418                 for (i = 0; i < len; i++)
1419                         but->drawstr[i] = '*';
1420                 but->drawstr[i] = '\0';
1421         }
1422 }
1423
1424
1425 /* ************* in-button text selection/editing ************* */
1426
1427
1428 static int ui_textedit_delete_selection(uiBut *but, uiHandleButtonData *data)
1429 {
1430         char *str = data->str;
1431         int len = strlen(str);
1432         int change = 0;
1433         if (but->selsta != but->selend && len) {
1434                 memmove(str + but->selsta, str + but->selend, (len - but->selend) + 1);
1435                 change = 1;
1436         }
1437
1438         but->pos = but->selend = but->selsta;
1439         return change;
1440 }
1441
1442 /* note, but->block->aspect is used here, when drawing button style is getting scaled too */
1443 static void ui_textedit_set_cursor_pos(uiBut *but, uiHandleButtonData *data, const float x)
1444 {
1445         uiStyle *style = UI_GetStyle();  // XXX pass on as arg
1446         uiFontStyle *fstyle = &style->widget;
1447         float startx = but->rect.xmin;
1448         char *origstr, password_str[UI_MAX_DRAW_STR];
1449
1450         uiStyleFontSet(fstyle);
1451
1452         if (fstyle->kerning == 1) /* for BLF_width */
1453                 BLF_enable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
1454
1455         ui_button_text_password_hide(password_str, but, FALSE);
1456
1457         origstr = MEM_mallocN(sizeof(char) * data->maxlen, "ui_textedit origstr");
1458
1459         BLI_strncpy(origstr, but->drawstr, data->maxlen);
1460
1461         /* XXX solve generic, see: #widget_draw_text_icon */
1462         if (but->type == NUM || but->type == NUMSLI) {
1463                 startx += (int)(0.5f * (BLI_rctf_size_y(&but->rect)));
1464         }
1465         else if (ELEM3(but->type, TEX, SEARCH_MENU, SEARCH_MENU_UNLINK)) {
1466                 if (but->flag & UI_HAS_ICON) {
1467                         startx += UI_DPI_ICON_SIZE;
1468                 }
1469                 /* but this extra .05 makes clicks inbetween characters feel nicer */
1470                 startx += ((UI_TEXT_MARGIN_X + 0.05f) * U.widget_unit);
1471         }
1472
1473         /* mouse dragged outside the widget to the left */
1474         if (x < startx) {
1475                 int i = but->ofs;
1476
1477                 origstr[but->ofs] = '\0';
1478
1479                 while (i > 0) {
1480                         if (BLI_str_cursor_step_prev_utf8(origstr, but->ofs, &i)) {
1481                                 /* 0.25 == scale factor for less sensitivity */
1482                                 if (BLF_width(fstyle->uifont_id, origstr + i) > (startx - x) * 0.25f) {
1483                                         break;
1484                                 }
1485                         }
1486                         else {
1487                                 break; /* unlikely but possible */
1488                         }
1489                 }
1490                 but->ofs = i;
1491                 but->pos = but->ofs;
1492         }
1493         /* mouse inside the widget, mouse coords mapped in widget space */
1494         else {  /* (x >= startx) */
1495                 int pos_i;
1496
1497                 /* keep track of previous distance from the cursor to the char */
1498                 float cdist, cdist_prev = 0.0f;
1499                 short pos_prev;
1500
1501                 but->pos = pos_prev = strlen(origstr) - but->ofs;
1502
1503                 while (true) {
1504                         cdist = startx + BLF_width(fstyle->uifont_id, origstr + but->ofs);
1505
1506                         /* check if position is found */
1507                         if (cdist < x) {
1508                                 /* check is previous location was in fact closer */
1509                                 if (((float)x - cdist) > (cdist_prev - (float)x)) {
1510                                         but->pos = pos_prev;
1511                                 }
1512                                 break;
1513                         }
1514                         cdist_prev = cdist;
1515                         pos_prev   = but->pos;
1516                         /* done with tricky distance checks */
1517
1518                         pos_i = but->pos;
1519                         if (but->pos <= 0) break;
1520                         if (BLI_str_cursor_step_prev_utf8(origstr, but->ofs, &pos_i)) {
1521                                 but->pos = pos_i;
1522                                 origstr[but->pos + but->ofs] = 0;
1523                         }
1524                         else {
1525                                 break; /* unlikely but possible */
1526                         }
1527                 }
1528                 but->pos += but->ofs;
1529                 if (but->pos < 0) but->pos = 0;
1530         }
1531
1532         if (fstyle->kerning == 1)
1533                 BLF_disable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
1534
1535         ui_button_text_password_hide(password_str, but, TRUE);
1536
1537         MEM_freeN(origstr);
1538 }
1539
1540 static void ui_textedit_set_cursor_select(uiBut *but, uiHandleButtonData *data, const float x)
1541 {
1542         if      (x > data->selstartx) data->selextend = EXTEND_RIGHT;
1543         else if (x < data->selstartx) data->selextend = EXTEND_LEFT;
1544
1545         ui_textedit_set_cursor_pos(but, data, x);
1546
1547         if      (data->selextend == EXTEND_RIGHT) but->selend = but->pos;
1548         else if (data->selextend == EXTEND_LEFT)  but->selsta = but->pos;
1549
1550         ui_check_but(but);
1551 }
1552
1553 /* this is used for both utf8 and ascii, its meant to be used for single keys,
1554  * notice the buffer is either copied or not, so its not suitable for pasting in
1555  * - campbell */
1556 static int ui_textedit_type_buf(uiBut *but, uiHandleButtonData *data,
1557                                 const char *utf8_buf, int utf8_buf_len)
1558 {
1559         char *str;
1560         int len, changed = 0;
1561
1562         str = data->str;
1563         len = strlen(str);
1564
1565         if (len - (but->selend - but->selsta) + 1 <= data->maxlen) {
1566                 int step = utf8_buf_len;
1567
1568                 /* type over the current selection */
1569                 if ((but->selend - but->selsta) > 0) {
1570                         changed = ui_textedit_delete_selection(but, data);
1571                         len = strlen(str);
1572                 }
1573
1574                 if (len + step < data->maxlen) {
1575                         memmove(&str[but->pos + step], &str[but->pos], (len + 1) - but->pos);
1576                         memcpy(&str[but->pos], utf8_buf, step * sizeof(char));
1577                         but->pos += step;
1578                         changed = 1;
1579                 }
1580         }
1581
1582         return changed;
1583 }
1584
1585 static int ui_textedit_type_ascii(uiBut *but, uiHandleButtonData *data, char ascii)
1586 {
1587         char buf[2] = {ascii, '\0'};
1588
1589         if (ui_is_but_utf8(but) && (BLI_str_utf8_size(buf) == -1)) {
1590                 printf("%s: entering invalid ascii char into an ascii key (%d)\n",
1591                        __func__, (int)(unsigned char)ascii);
1592
1593                 return 0;
1594         }
1595
1596         /* in some cases we want to allow invalid utf8 chars */
1597         return ui_textedit_type_buf(but, data, buf, 1);
1598 }
1599
1600 static void ui_textedit_move(uiBut *but, uiHandleButtonData *data, strCursorJumpDirection direction,
1601                              int select, strCursorJumpType jump)
1602 {
1603         const char *str = data->str;
1604         const int len = strlen(str);
1605         const int pos_prev = but->pos;
1606         const int has_sel = (but->selend - but->selsta) > 0;
1607
1608         ui_check_but(but);
1609
1610         /* special case, quit selection and set cursor */
1611         if (has_sel && !select) {
1612                 if (jump == STRCUR_JUMP_ALL) {
1613                         but->selsta = but->selend = but->pos = direction ? len : 0;
1614                 }
1615                 else {
1616                         if (direction) {
1617                                 but->selsta = but->pos = but->selend;
1618                         }
1619                         else {
1620                                 but->pos = but->selend = but->selsta;
1621                         }
1622                 }
1623                 data->selextend = 0;
1624         }
1625         else {
1626                 int pos_i = but->pos;
1627                 BLI_str_cursor_step_utf8(str, len, &pos_i, direction, jump, true);
1628                 but->pos = pos_i;
1629
1630                 if (select) {
1631                         /* existing selection */
1632                         if (has_sel) {
1633
1634                                 if (data->selextend == 0) {
1635                                         data->selextend = EXTEND_RIGHT;
1636                                 }
1637
1638                                 if (direction) {
1639                                         if (data->selextend == EXTEND_RIGHT) {
1640                                                 but->selend = but->pos;
1641                                         }
1642                                         else {
1643                                                 but->selsta = but->pos;
1644                                         }
1645                                 }
1646                                 else {
1647                                         if (data->selextend == EXTEND_LEFT) {
1648                                                 but->selsta = but->pos;
1649                                         }
1650                                         else {
1651                                                 but->selend = but->pos;
1652                                         }
1653                                 }
1654
1655                                 if (but->selend < but->selsta) {
1656                                         SWAP(short, but->selsta, but->selend);
1657                                         data->selextend = (data->selextend == EXTEND_RIGHT) ? EXTEND_LEFT : EXTEND_RIGHT;
1658                                 }
1659
1660                         } /* new selection */
1661                         else {
1662                                 if (direction) {
1663                                         data->selextend = EXTEND_RIGHT;
1664                                         but->selend = but->pos;
1665                                         but->selsta = pos_prev;
1666                                 }
1667                                 else {
1668                                         data->selextend = EXTEND_LEFT;
1669                                         but->selend = pos_prev;
1670                                         but->selsta = but->pos;
1671                                 }
1672                         }
1673                 }
1674         }
1675 }
1676
1677 static int ui_textedit_delete(uiBut *but, uiHandleButtonData *data, int direction, strCursorJumpType jump)
1678 {
1679         char *str = data->str;
1680         const int len = strlen(str);
1681
1682         int changed = 0;
1683
1684         if (jump == STRCUR_JUMP_ALL) {
1685                 if (len) changed = 1;
1686                 str[0] = '\0';
1687                 but->pos = 0;
1688         }
1689         else if (direction) { /* delete */
1690                 if ((but->selend - but->selsta) > 0) {
1691                         changed = ui_textedit_delete_selection(but, data);
1692                 }
1693                 else if (but->pos >= 0 && but->pos < len) {
1694                         int pos = but->pos;
1695                         int step;
1696                         BLI_str_cursor_step_utf8(str, len, &pos, direction, jump, true);
1697                         step = pos - but->pos;
1698                         memmove(&str[but->pos], &str[but->pos + step], (len + 1) - but->pos);
1699                         changed = 1;
1700                 }
1701         }
1702         else { /* backspace */
1703                 if (len != 0) {
1704                         if ((but->selend - but->selsta) > 0) {
1705                                 changed = ui_textedit_delete_selection(but, data);
1706                         }
1707                         else if (but->pos > 0) {
1708                                 int pos = but->pos;
1709                                 int step;
1710
1711                                 BLI_str_cursor_step_utf8(str, len, &pos, direction, jump, true);
1712                                 step = but->pos - pos;
1713                                 memmove(&str[but->pos - step], &str[but->pos], (len + 1) - but->pos);
1714                                 but->pos -= step;
1715                                 changed = 1;
1716                         }
1717                 }
1718         }
1719
1720         return changed;
1721 }
1722
1723 static int ui_textedit_autocomplete(bContext *C, uiBut *but, uiHandleButtonData *data)
1724 {
1725         char *str;
1726         int changed = 1;
1727
1728         str = data->str;
1729
1730         if (data->searchbox)
1731                 ui_searchbox_autocomplete(C, data->searchbox, but, data->str);
1732         else
1733                 but->autocomplete_func(C, str, but->autofunc_arg);
1734
1735         but->pos = strlen(str);
1736         but->selsta = but->selend = but->pos;
1737
1738         return changed;
1739 }
1740
1741 static int ui_textedit_copypaste(uiBut *but, uiHandleButtonData *data, int paste, int copy, int cut)
1742 {
1743         char buf[UI_MAX_DRAW_STR] = {0};
1744         char *str, *p, *pbuf;
1745         int x, changed = 0;
1746         int str_len, buf_len;
1747
1748         str = data->str;
1749         str_len = strlen(str);
1750
1751         /* paste */
1752         if (paste) {
1753                 /* TODO, ensure UTF8 ui_is_but_utf8() - campbell */
1754                 /* extract the first line from the clipboard */
1755                 p = pbuf = WM_clipboard_text_get(0);
1756
1757                 if (p && p[0]) {
1758                         unsigned int y;
1759                         buf_len = 0;
1760                         while (*p && *p != '\r' && *p != '\n' && buf_len < UI_MAX_DRAW_STR - 1) {
1761                                 buf[buf_len++] = *p;
1762                                 p++;
1763                         }
1764                         buf[buf_len] = 0;
1765
1766                         /* paste over the current selection */
1767                         if ((but->selend - but->selsta) > 0) {
1768                                 ui_textedit_delete_selection(but, data);
1769                                 str_len = strlen(str);
1770                         }
1771
1772                         for (y = 0; y < buf_len; y++) {
1773                                 /* add contents of buffer */
1774                                 if (str_len + 1 < data->maxlen) {
1775                                         for (x = data->maxlen; x > but->pos; x--)
1776                                                 str[x] = str[x - 1];
1777                                         str[but->pos] = buf[y];
1778                                         but->pos++;
1779                                         str_len++;
1780                                         str[str_len] = '\0';
1781                                 }
1782                         }
1783
1784                         changed = 1;
1785                 }
1786
1787                 if (pbuf) {
1788                         MEM_freeN(pbuf);
1789                 }
1790         }
1791         /* cut & copy */
1792         else if (copy || cut) {
1793                 /* copy the contents to the copypaste buffer */
1794                 for (x = but->selsta; x <= but->selend; x++) {
1795                         if (x == but->selend)
1796                                 buf[x] = '\0';
1797                         else
1798                                 buf[(x - but->selsta)] = str[x];
1799                 }
1800
1801                 WM_clipboard_text_set(buf, 0);
1802
1803                 /* for cut only, delete the selection afterwards */
1804                 if (cut)
1805                         if ((but->selend - but->selsta) > 0)
1806                                 changed = ui_textedit_delete_selection(but, data);
1807         }
1808
1809         return changed;
1810 }
1811
1812 static void ui_textedit_begin(bContext *C, uiBut *but, uiHandleButtonData *data)
1813 {
1814         int len;
1815
1816         if (data->str) {
1817                 MEM_freeN(data->str);
1818                 data->str = NULL;
1819         }
1820
1821         /* retrieve string */
1822         data->maxlen = ui_get_but_string_max_length(but);
1823         data->str = MEM_callocN(sizeof(char) * data->maxlen + 1, "textedit str");
1824         ui_get_but_string(but, data->str, data->maxlen);
1825
1826         if (ELEM3(but->type, NUM, NUMABS, NUMSLI)) {
1827                 ui_convert_to_unit_alt_name(but, data->str, data->maxlen);
1828         }
1829
1830         /* won't change from now on */
1831         len = strlen(data->str);
1832
1833         data->origstr = BLI_strdupn(data->str, len);
1834         data->selextend = 0;
1835         data->selstartx = 0;
1836
1837         /* set cursor pos to the end of the text */
1838         but->editstr = data->str;
1839         but->pos = len;
1840         but->selsta = 0;
1841         but->selend = len;
1842
1843         /* optional searchbox */
1844         if (ELEM(but->type, SEARCH_MENU, SEARCH_MENU_UNLINK)) {
1845                 data->searchbox = ui_searchbox_create(C, data->region, but);
1846                 ui_searchbox_update(C, data->searchbox, but, 1); /* 1 = reset */
1847         }
1848
1849         ui_check_but(but);
1850
1851         WM_cursor_modal(CTX_wm_window(C), BC_TEXTEDITCURSOR);
1852 }
1853
1854 static void ui_textedit_end(bContext *C, uiBut *but, uiHandleButtonData *data)
1855 {
1856         if (but) {
1857                 if (ui_is_but_utf8(but)) {
1858                         int strip = BLI_utf8_invalid_strip(but->editstr, strlen(but->editstr));
1859                         /* not a file?, strip non utf-8 chars */
1860                         if (strip) {
1861                                 /* wont happen often so isn't that annoying to keep it here for a while */
1862                                 printf("%s: invalid utf8 - stripped chars %d\n", __func__, strip);
1863                         }
1864                 }
1865
1866                 if (data->searchbox) {
1867                         if (data->cancel == 0)
1868                                 ui_searchbox_apply(but, data->searchbox);
1869
1870                         ui_searchbox_free(C, data->searchbox);
1871                         data->searchbox = NULL;
1872                 }
1873
1874                 but->editstr = NULL;
1875                 but->pos = -1;
1876         }
1877
1878         WM_cursor_restore(CTX_wm_window(C));
1879 }
1880
1881 static void ui_textedit_next_but(uiBlock *block, uiBut *actbut, uiHandleButtonData *data)
1882 {
1883         uiBut *but;
1884
1885         /* label and roundbox can overlap real buttons (backdrops...) */
1886         if (ELEM4(actbut->type, LABEL, SEPR, ROUNDBOX, LISTBOX))
1887                 return;
1888
1889         for (but = actbut->next; but; but = but->next) {
1890                 if (ELEM8(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU, SEARCH_MENU_UNLINK)) {
1891                         if (!(but->flag & UI_BUT_DISABLED)) {
1892                                 data->postbut = but;
1893                                 data->posttype = BUTTON_ACTIVATE_TEXT_EDITING;
1894                                 return;
1895                         }
1896                 }
1897         }
1898         for (but = block->buttons.first; but != actbut; but = but->next) {
1899                 if (ELEM8(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU, SEARCH_MENU_UNLINK)) {
1900                         if (!(but->flag & UI_BUT_DISABLED)) {
1901                                 data->postbut = but;
1902                                 data->posttype = BUTTON_ACTIVATE_TEXT_EDITING;
1903                                 return;
1904                         }
1905                 }
1906         }
1907 }
1908
1909 static void ui_textedit_prev_but(uiBlock *block, uiBut *actbut, uiHandleButtonData *data)
1910 {
1911         uiBut *but;
1912
1913         /* label and roundbox can overlap real buttons (backdrops...) */
1914         if (ELEM4(actbut->type, LABEL, SEPR, ROUNDBOX, LISTBOX))
1915                 return;
1916
1917         for (but = actbut->prev; but; but = but->prev) {
1918                 if (ELEM8(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU, SEARCH_MENU_UNLINK)) {
1919                         if (!(but->flag & UI_BUT_DISABLED)) {
1920                                 data->postbut = but;
1921                                 data->posttype = BUTTON_ACTIVATE_TEXT_EDITING;
1922                                 return;
1923                         }
1924                 }
1925         }
1926         for (but = block->buttons.last; but != actbut; but = but->prev) {
1927                 if (ELEM8(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU, SEARCH_MENU_UNLINK)) {
1928                         if (!(but->flag & UI_BUT_DISABLED)) {
1929                                 data->postbut = but;
1930                                 data->posttype = BUTTON_ACTIVATE_TEXT_EDITING;
1931                                 return;
1932                         }
1933                 }
1934         }
1935 }
1936
1937
1938 static void ui_do_but_textedit(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
1939 {
1940         int mx, my, changed = 0, inbox = 0, update = 0, retval = WM_UI_HANDLER_CONTINUE;
1941
1942         switch (event->type) {
1943                 case WHEELUPMOUSE:
1944                 case WHEELDOWNMOUSE:
1945                 case MOUSEMOVE:
1946                 case MOUSEPAN:
1947                         if (data->searchbox)
1948                                 ui_searchbox_event(C, data->searchbox, but, event);
1949
1950                         break;
1951                 case RIGHTMOUSE:
1952                 case ESCKEY:
1953                         data->cancel = TRUE;
1954                         data->escapecancel = TRUE;
1955                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1956                         retval = WM_UI_HANDLER_BREAK;
1957                         break;
1958                 case LEFTMOUSE:
1959                 {
1960                         /* exit on LMB only on RELEASE for searchbox, to mimic other popups, and allow multiple menu levels */
1961                         if (data->searchbox)
1962                                 inbox = ui_searchbox_inside(data->searchbox, event->x, event->y);
1963
1964                         if (event->val == KM_PRESS) {
1965                                 mx = event->x;
1966                                 my = event->y;
1967                                 ui_window_to_block(data->region, block, &mx, &my);
1968
1969                                 if (ui_but_contains_pt(but, mx, my)) {
1970                                         ui_textedit_set_cursor_pos(but, data, mx);
1971                                         but->selsta = but->selend = but->pos;
1972                                         data->selstartx = mx;
1973
1974                                         button_activate_state(C, but, BUTTON_STATE_TEXT_SELECTING);
1975                                         retval = WM_UI_HANDLER_BREAK;
1976                                 }
1977                                 else if (inbox == 0) {
1978                                         /* if searchbox, click outside will cancel */
1979                                         if (data->searchbox)
1980                                                 data->cancel = data->escapecancel = TRUE;
1981                                         button_activate_state(C, but, BUTTON_STATE_EXIT);
1982                                         retval = WM_UI_HANDLER_BREAK;
1983                                 }
1984                         }
1985                         else if (inbox) {
1986                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
1987                                 retval = WM_UI_HANDLER_BREAK;
1988                         }
1989                         break;
1990                 }
1991         }
1992
1993         if (event->val == KM_PRESS) {
1994                 switch (event->type) {
1995                         case VKEY:
1996                         case XKEY:
1997                         case CKEY:
1998                                 if (event->ctrl || event->oskey) {
1999                                         if (event->type == VKEY)
2000                                                 changed = ui_textedit_copypaste(but, data, 1, 0, 0);
2001                                         else if (event->type == CKEY)
2002                                                 changed = ui_textedit_copypaste(but, data, 0, 1, 0);
2003                                         else if (event->type == XKEY)
2004                                                 changed = ui_textedit_copypaste(but, data, 0, 0, 1);
2005
2006                                         retval = WM_UI_HANDLER_BREAK;
2007                                 }
2008                                 break;
2009                         case RIGHTARROWKEY:
2010                                 ui_textedit_move(but, data, STRCUR_DIR_NEXT,
2011                                                  event->shift, event->ctrl ? STRCUR_JUMP_DELIM : STRCUR_JUMP_NONE);
2012                                 retval = WM_UI_HANDLER_BREAK;
2013                                 break;
2014                         case LEFTARROWKEY:
2015                                 ui_textedit_move(but, data, STRCUR_DIR_PREV,
2016                                                  event->shift, event->ctrl ? STRCUR_JUMP_DELIM : STRCUR_JUMP_NONE);
2017                                 retval = WM_UI_HANDLER_BREAK;
2018                                 break;
2019                         case DOWNARROWKEY:
2020                                 if (data->searchbox) {
2021                                         ui_searchbox_event(C, data->searchbox, but, event);
2022                                         break;
2023                                 }
2024                         /* pass on purposedly */
2025                         case ENDKEY:
2026                                 ui_textedit_move(but, data, STRCUR_DIR_NEXT,
2027                                                  event->shift, STRCUR_JUMP_ALL);
2028                                 retval = WM_UI_HANDLER_BREAK;
2029                                 break;
2030                         case UPARROWKEY:
2031                                 if (data->searchbox) {
2032                                         ui_searchbox_event(C, data->searchbox, but, event);
2033                                         break;
2034                                 }
2035                         /* pass on purposedly */
2036                         case HOMEKEY:
2037                                 ui_textedit_move(but, data, STRCUR_DIR_PREV,
2038                                                  event->shift, STRCUR_JUMP_ALL);
2039                                 retval = WM_UI_HANDLER_BREAK;
2040                                 break;
2041                         case PADENTER:
2042                         case RETKEY:
2043                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2044                                 retval = WM_UI_HANDLER_BREAK;
2045                                 break;
2046                         case DELKEY:
2047                                 changed = ui_textedit_delete(but, data, 1,
2048                                                              event->ctrl ? STRCUR_JUMP_DELIM : STRCUR_JUMP_NONE);
2049                                 retval = WM_UI_HANDLER_BREAK;
2050                                 break;
2051
2052                         case BACKSPACEKEY:
2053                                 changed = ui_textedit_delete(but, data, 0,
2054                                                              event->shift ? STRCUR_JUMP_ALL : (event->ctrl ? STRCUR_JUMP_DELIM : STRCUR_JUMP_NONE));
2055                                 retval = WM_UI_HANDLER_BREAK;
2056                                 break;
2057
2058                         case TABKEY:
2059                                 /* there is a key conflict here, we can't tab with autocomplete */
2060                                 if (but->autocomplete_func || data->searchbox) {
2061                                         changed = ui_textedit_autocomplete(C, but, data);
2062                                         update = 1; /* do live update for tab key */
2063                                 }
2064                                 /* the hotkey here is not well defined, was G.qual so we check all */
2065                                 else if (event->shift || event->ctrl || event->alt || event->oskey) {
2066                                         ui_textedit_prev_but(block, but, data);
2067                                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2068                                 }
2069                                 else {
2070                                         ui_textedit_next_but(block, but, data);
2071                                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2072                                 }
2073                                 retval = WM_UI_HANDLER_BREAK;
2074                                 break;
2075                 }
2076
2077                 if ((event->ascii || event->utf8_buf[0]) && (retval == WM_UI_HANDLER_CONTINUE)) {
2078                         char ascii = event->ascii;
2079                         const char *utf8_buf = event->utf8_buf;
2080
2081                         /* exception that's useful for number buttons, some keyboard
2082                          * numpads have a comma instead of a period */
2083                         if (ELEM3(but->type, NUM, NUMABS, NUMSLI)) { /* could use data->min*/
2084                                 if (event->type == PADPERIOD && ascii == ',') {
2085                                         ascii = '.';
2086                                         utf8_buf = NULL; /* force ascii fallback */
2087                                 }
2088                         }
2089
2090                         if (utf8_buf && utf8_buf[0]) {
2091                                 int utf8_buf_len = BLI_str_utf8_size(utf8_buf);
2092                                 /* keep this printf until utf8 is well tested */
2093                                 if (utf8_buf_len != 1) {
2094                                         printf("%s: utf8 char '%.*s'\n", __func__, utf8_buf_len, utf8_buf);
2095                                 }
2096
2097                                 // strcpy(utf8_buf, "12345");
2098                                 changed = ui_textedit_type_buf(but, data, event->utf8_buf, utf8_buf_len);
2099                         }
2100                         else {
2101                                 changed = ui_textedit_type_ascii(but, data, ascii);
2102                         }
2103
2104                         retval = WM_UI_HANDLER_BREAK;
2105
2106                 }
2107                 /* textbutton with magnifier icon: do live update for search button */
2108                 if (but->icon == ICON_VIEWZOOM)
2109                         update = 1;
2110         }
2111
2112         if (changed) {
2113                 /* only update when typing for TAB key */
2114                 if (update && data->interactive) {
2115                         ui_apply_button(C, block, but, data, 1);
2116                 }
2117                 else {
2118                         ui_check_but(but);
2119                 }
2120                 but->changed = TRUE;
2121
2122                 if (data->searchbox)
2123                         ui_searchbox_update(C, data->searchbox, but, 1);  /* 1 = reset */
2124         }
2125
2126         if (changed || (retval == WM_UI_HANDLER_BREAK))
2127                 ED_region_tag_redraw(data->region);
2128 }
2129
2130 static void ui_do_but_textedit_select(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
2131 {
2132         int mx, my, retval = WM_UI_HANDLER_CONTINUE;
2133
2134         switch (event->type) {
2135                 case MOUSEMOVE:
2136                 {
2137                         mx = event->x;
2138                         my = event->y;
2139                         ui_window_to_block(data->region, block, &mx, &my);
2140
2141                         ui_textedit_set_cursor_select(but, data, mx);
2142                         retval = WM_UI_HANDLER_BREAK;
2143                         break;
2144                 }
2145                 case LEFTMOUSE:
2146                         if (event->val == KM_RELEASE)
2147                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2148                         retval = WM_UI_HANDLER_BREAK;
2149                         break;
2150         }
2151
2152         if (retval == WM_UI_HANDLER_BREAK) {
2153                 ui_check_but(but);
2154                 ED_region_tag_redraw(data->region);
2155         }
2156 }
2157
2158 /* ************* number editing for various types ************* */
2159
2160 static void ui_numedit_begin(uiBut *but, uiHandleButtonData *data)
2161 {
2162         if (but->type == BUT_CURVE) {
2163                 but->editcumap = (CurveMapping *)but->poin;
2164         }
2165         else if (but->type == BUT_COLORBAND) {
2166                 data->coba = (ColorBand *)but->poin;
2167                 but->editcoba = data->coba;
2168         }
2169         else if (ELEM3(but->type, BUT_NORMAL, HSVCUBE, HSVCIRCLE)) {
2170                 ui_get_but_vectorf(but, data->origvec);
2171                 copy_v3_v3(data->vec, data->origvec);
2172                 but->editvec = data->vec;
2173         }
2174         else {
2175                 float softrange, softmin, softmax;
2176
2177                 data->startvalue = ui_get_but_val(but);
2178                 data->origvalue = data->startvalue;
2179                 data->value = data->origvalue;
2180                 but->editval = &data->value;
2181
2182                 softmin = but->softmin;
2183                 softmax = but->softmax;
2184                 softrange = softmax - softmin;
2185
2186                 data->dragfstart = (softrange == 0.0f) ? 0.0f : ((float)data->value - softmin) / softrange;
2187                 data->dragf = data->dragfstart;
2188         }
2189
2190         data->dragchange = 0;
2191         data->draglock = 1;
2192 }
2193
2194 static void ui_numedit_end(uiBut *but, uiHandleButtonData *data)
2195 {
2196         but->editval = NULL;
2197         but->editvec = NULL;
2198         but->editcoba = NULL;
2199         but->editcumap = NULL;
2200
2201         data->dragstartx = 0;
2202         data->draglastx = 0;
2203         data->dragchange = 0;
2204         data->dragcbd = NULL;
2205         data->dragsel = 0;
2206 }
2207
2208 static void ui_numedit_apply(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data)
2209 {
2210         if (data->interactive) {
2211                 ui_apply_button(C, block, but, data, 1);
2212         }
2213         else {
2214                 ui_check_but(but);
2215         }
2216
2217         ED_region_tag_redraw(data->region);
2218 }
2219
2220 /* ****************** menu opening for various types **************** */
2221
2222 static void ui_blockopen_begin(bContext *C, uiBut *but, uiHandleButtonData *data)
2223 {
2224         uiBlockCreateFunc func = NULL;
2225         uiBlockHandleCreateFunc handlefunc = NULL;
2226         uiMenuCreateFunc menufunc = NULL;
2227         char *menustr = NULL;
2228         void *arg = NULL;
2229
2230         switch (but->type) {
2231                 case BLOCK:
2232                 case PULLDOWN:
2233                         if (but->menu_create_func) {
2234                                 menufunc = but->menu_create_func;
2235                                 arg = but->poin;
2236                         }
2237                         else {
2238                                 func = but->block_create_func;
2239                                 arg = but->poin ? but->poin : but->func_argN;
2240                         }
2241                         break;
2242                 case MENU:
2243                         if (but->menu_create_func) {
2244                                 menufunc = but->menu_create_func;
2245                                 arg = but->poin;
2246                         }
2247                         else {
2248                                 data->origvalue = ui_get_but_val(but);
2249                                 data->value = data->origvalue;
2250                                 but->editval = &data->value;
2251
2252                                 menustr = but->str;
2253                         }
2254                         break;
2255                 case ICONROW:
2256                         menufunc = ui_block_func_ICONROW;
2257                         arg = but;
2258                         break;
2259                 case ICONTEXTROW:
2260                         menufunc = ui_block_func_ICONTEXTROW;
2261                         arg = but;
2262                         break;
2263                 case COLOR:
2264                         ui_get_but_vectorf(but, data->origvec);
2265                         copy_v3_v3(data->vec, data->origvec);
2266                         but->editvec = data->vec;
2267
2268                         handlefunc = ui_block_func_COLOR;
2269                         arg = but;
2270                         break;
2271
2272                         /* quiet warnings for unhandled types */
2273                 default:
2274                         break;
2275         }
2276
2277         if (func || handlefunc) {
2278                 data->menu = ui_popup_block_create(C, data->region, but, func, handlefunc, arg);
2279                 if (but->block->handle)
2280                         data->menu->popup = but->block->handle->popup;
2281         }
2282         else if (menufunc || menustr) {
2283                 data->menu = ui_popup_menu_create(C, data->region, but, menufunc, arg, menustr);
2284                 if (but->block->handle)
2285                         data->menu->popup = but->block->handle->popup;
2286         }
2287
2288         /* this makes adjacent blocks auto open from now on */
2289         //if (but->block->auto_open == 0) but->block->auto_open = 1;
2290 }
2291
2292 static void ui_blockopen_end(bContext *C, uiBut *but, uiHandleButtonData *data)
2293 {
2294         if (but) {
2295                 but->editval = NULL;
2296                 but->editvec = NULL;
2297
2298                 but->block->auto_open_last = PIL_check_seconds_timer();
2299         }
2300
2301         if (data->menu) {
2302                 ui_popup_block_free(C, data->menu);
2303                 data->menu = NULL;
2304         }
2305 }
2306
2307 int ui_button_open_menu_direction(uiBut *but)
2308 {
2309         uiHandleButtonData *data = but->active;
2310
2311         if (data && data->menu)
2312                 return data->menu->direction;
2313
2314         return 0;
2315 }
2316
2317 /* ***************** events for different button types *************** */
2318
2319 static int ui_do_but_BUT(bContext *C, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
2320 {
2321         if (data->state == BUTTON_STATE_HIGHLIGHT) {
2322                 if (event->type == LEFTMOUSE && event->val == KM_PRESS) {
2323                         button_activate_state(C, but, BUTTON_STATE_WAIT_RELEASE);
2324                         return WM_UI_HANDLER_BREAK;
2325                 }
2326                 else if (event->type == LEFTMOUSE && but->block->handle) {
2327                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2328                         return WM_UI_HANDLER_BREAK;
2329                 }
2330                 else if (ELEM(event->type, PADENTER, RETKEY) && event->val == KM_PRESS) {
2331                         button_activate_state(C, but, BUTTON_STATE_WAIT_FLASH);
2332                         return WM_UI_HANDLER_BREAK;
2333                 }
2334         }
2335         else if (data->state == BUTTON_STATE_WAIT_RELEASE) {
2336                 if (event->type == LEFTMOUSE && event->val != KM_PRESS) {
2337                         if (!(but->flag & UI_SELECT))
2338                                 data->cancel = TRUE;
2339                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2340                         return WM_UI_HANDLER_BREAK;
2341                 }
2342         }
2343
2344         return WM_UI_HANDLER_CONTINUE;
2345 }
2346
2347 static int ui_do_but_HOTKEYEVT(bContext *C, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
2348 {
2349         if (data->state == BUTTON_STATE_HIGHLIGHT) {
2350                 if (ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val == KM_PRESS) {
2351                         but->drawstr[0] = 0;
2352                         but->modifier_key = 0;
2353                         button_activate_state(C, but, BUTTON_STATE_WAIT_KEY_EVENT);
2354                         return WM_UI_HANDLER_BREAK;
2355                 }
2356         }
2357         else if (data->state == BUTTON_STATE_WAIT_KEY_EVENT) {
2358
2359                 if (event->type == MOUSEMOVE)
2360                         return WM_UI_HANDLER_CONTINUE;
2361
2362                 if (event->type == LEFTMOUSE && event->val == KM_PRESS) {
2363                         /* only cancel if click outside the button */
2364                         if (ui_mouse_inside_button(but->active->region, but, event->x, event->y) == 0) {
2365                                 /* data->cancel doesnt work, this button opens immediate */
2366                                 if (but->flag & UI_BUT_IMMEDIATE)
2367                                         ui_set_but_val(but, 0);
2368                                 else
2369                                         data->cancel = TRUE;
2370                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2371                                 return WM_UI_HANDLER_BREAK;
2372                         }
2373                 }
2374
2375                 /* always set */
2376                 but->modifier_key = 0;
2377                 if (event->shift) but->modifier_key |= KM_SHIFT;
2378                 if (event->alt) but->modifier_key |= KM_ALT;
2379                 if (event->ctrl) but->modifier_key |= KM_CTRL;
2380                 if (event->oskey) but->modifier_key |= KM_OSKEY;
2381
2382                 ui_check_but(but);
2383                 ED_region_tag_redraw(data->region);
2384
2385                 if (event->val == KM_PRESS) {
2386                         if (ISHOTKEY(event->type)) {
2387
2388                                 if (WM_key_event_string(event->type)[0])
2389                                         ui_set_but_val(but, event->type);
2390                                 else
2391                                         data->cancel = TRUE;
2392
2393                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2394                                 return WM_UI_HANDLER_BREAK;
2395                         }
2396                         else if (event->type == ESCKEY) {
2397                                 data->cancel = TRUE;
2398                                 data->escapecancel = TRUE;
2399                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2400                         }
2401
2402                 }
2403         }
2404
2405         return WM_UI_HANDLER_CONTINUE;
2406 }
2407
2408 static int ui_do_but_KEYEVT(bContext *C, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
2409 {
2410         if (data->state == BUTTON_STATE_HIGHLIGHT) {
2411                 if (ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val == KM_PRESS) {
2412                         button_activate_state(C, but, BUTTON_STATE_WAIT_KEY_EVENT);
2413                         return WM_UI_HANDLER_BREAK;
2414                 }
2415         }
2416         else if (data->state == BUTTON_STATE_WAIT_KEY_EVENT) {
2417                 if (event->type == MOUSEMOVE)
2418                         return WM_UI_HANDLER_CONTINUE;
2419
2420                 if (event->val == KM_PRESS) {
2421                         if (WM_key_event_string(event->type)[0])
2422                                 ui_set_but_val(but, event->type);
2423                         else
2424                                 data->cancel = TRUE;
2425
2426                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2427                 }
2428         }
2429
2430         return WM_UI_HANDLER_CONTINUE;
2431 }
2432
2433 static int ui_do_but_TEX(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
2434 {
2435         if (data->state == BUTTON_STATE_HIGHLIGHT) {
2436                 if (ELEM(event->type, LEFTMOUSE, EVT_BUT_OPEN) && event->val == KM_PRESS) {
2437                         if (but->dt == UI_EMBOSSN && !event->ctrl) {
2438                                 /* pass */
2439                         }
2440                         else {
2441                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2442                                 return WM_UI_HANDLER_BREAK;
2443                         }
2444                 }
2445         }
2446         else if (data->state == BUTTON_STATE_TEXT_EDITING) {
2447                 ui_do_but_textedit(C, block, but, data, event);
2448                 return WM_UI_HANDLER_BREAK;
2449         }
2450         else if (data->state == BUTTON_STATE_TEXT_SELECTING) {
2451                 ui_do_but_textedit_select(C, block, but, data, event);
2452                 return WM_UI_HANDLER_BREAK;
2453         }
2454
2455         return WM_UI_HANDLER_CONTINUE;
2456 }
2457
2458 static int ui_do_but_SEARCH_UNLINK(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
2459 {
2460         /* unlink icon is on right */
2461         if (ELEM(event->type, LEFTMOUSE, EVT_BUT_OPEN) && event->val == KM_PRESS) {
2462                 ARegion *ar = CTX_wm_region(C);
2463                 rcti rect;
2464                 int x = event->x, y = event->y;
2465
2466                 ui_window_to_block(ar, but->block, &x, &y);
2467
2468                 BLI_rcti_rctf_copy(&rect, &but->rect);
2469
2470                 rect.xmin = rect.xmax - (BLI_rcti_size_y(&rect));
2471                 if ( BLI_rcti_isect_pt(&rect, x, y) ) {
2472                         /* most likely NULL, but let's check, and give it temp zero string */
2473                         if (data->str == NULL)
2474                                 data->str = MEM_callocN(16, "temp str");
2475                         data->str[0] = 0;
2476
2477                         ui_apply_but_TEX(C, but, data);
2478                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2479
2480                         return WM_UI_HANDLER_BREAK;
2481                 }
2482         }
2483         return ui_do_but_TEX(C, block, but, data, event);
2484 }
2485
2486 static int ui_do_but_TOG(bContext *C, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
2487 {
2488         if (data->state == BUTTON_STATE_HIGHLIGHT) {
2489                 if (event->type == LEFTMOUSE && event->val == KM_PRESS && ui_is_but_bool(but)) {
2490                         button_activate_state(C, but, BUTTON_STATE_WAIT_DRAG);
2491                         data->dragstartx = event->x;
2492                         data->dragstarty = event->y;
2493                         return WM_UI_HANDLER_CONTINUE;
2494                 }
2495
2496                 if (ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val == KM_PRESS) {
2497                         data->togdual = event->ctrl;
2498                         data->togonly = !event->shift;
2499                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2500                         return WM_UI_HANDLER_CONTINUE;
2501                 }
2502         }
2503         else if (data->state == BUTTON_STATE_WAIT_DRAG) {
2504                 /* note: the 'BUTTON_STATE_WAIT_DRAG' part of 'ui_do_but_EXIT' could be refactored into its own function */
2505                 return ui_do_but_EXIT(C, but, data, event);
2506         }
2507         return WM_UI_HANDLER_CONTINUE;
2508 }
2509
2510 static int ui_do_but_EXIT(bContext *C, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
2511 {
2512
2513         if (data->state == BUTTON_STATE_HIGHLIGHT) {
2514
2515                 /* first handle click on icondrag type button */
2516                 if (event->type == LEFTMOUSE && but->dragpoin) {
2517                         if (ui_but_mouse_inside_icon(but, data->region, event)) {
2518
2519                                 /* tell the button to wait and keep checking further events to
2520                                  * see if it should start dragging */
2521                                 button_activate_state(C, but, BUTTON_STATE_WAIT_DRAG);
2522                                 data->dragstartx = event->x;
2523                                 data->dragstarty = event->y;
2524                                 return WM_UI_HANDLER_CONTINUE;
2525                         }
2526                 }
2527                 if (event->type == LEFTMOUSE && ui_is_but_bool(but)) {
2528                         button_activate_state(C, but, BUTTON_STATE_WAIT_DRAG);
2529                         data->dragstartx = event->x;
2530                         data->dragstarty = event->y;
2531                         return WM_UI_HANDLER_CONTINUE;
2532                 }
2533
2534                 if (ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val == KM_PRESS) {
2535                         int ret = WM_UI_HANDLER_BREAK;
2536                         /* XXX (a bit ugly) Special case handling for filebrowser drag button */
2537                         if (but->dragpoin && but->imb && ui_but_mouse_inside_icon(but, data->region, event)) {
2538                                 ret = WM_UI_HANDLER_CONTINUE;
2539                         }
2540                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2541                         return ret;
2542                 }
2543         }
2544         else if (data->state == BUTTON_STATE_WAIT_DRAG) {
2545
2546                 /* this function also ends state */
2547                 if (ui_but_start_drag(C, but, data, event)) {
2548                         return WM_UI_HANDLER_BREAK;
2549                 }
2550
2551                 /* If the mouse has been pressed and released, getting to
2552                  * this point without triggering a drag, then clear the
2553                  * drag state for this button and continue to pass on the event */
2554                 if (event->type == LEFTMOUSE && event->val == KM_RELEASE) {
2555                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2556                         return WM_UI_HANDLER_CONTINUE;
2557                 }
2558
2559                 /* while waiting for a drag to be triggered, always block
2560                  * other events from getting handled */
2561                 return WM_UI_HANDLER_BREAK;
2562         }
2563
2564         return WM_UI_HANDLER_CONTINUE;
2565 }
2566
2567 /* var names match ui_numedit_but_NUM */
2568 static float ui_numedit_apply_snapf(uiBut *but, float tempf, float softmin, float softmax, float softrange, int snap)
2569 {
2570         if (tempf == softmin || tempf == softmax || snap == 0) {
2571                 /* pass */
2572         }
2573         else {
2574                 float fac = 1.0f;
2575
2576                 if (ui_is_but_unit(but)) {
2577                         UnitSettings *unit = but->block->unit;
2578                         int unit_type = RNA_SUBTYPE_UNIT_VALUE(uiButGetUnitType(but));
2579
2580                         if (bUnit_IsValid(unit->system, unit_type)) {
2581                                 fac = (float)bUnit_BaseScalar(unit->system, unit_type);
2582                                 if (ELEM3(unit_type, B_UNIT_LENGTH, B_UNIT_AREA, B_UNIT_VOLUME)) {
2583                                         fac /= unit->scale_length;
2584                                 }
2585                         }
2586                 }
2587
2588                 if (fac != 1.0f) {
2589                         /* snap in unit-space */
2590                         tempf /= fac;
2591                         /* softmin /= fac; */ /* UNUSED */
2592                         /* softmax /= fac; */ /* UNUSED */
2593                         softrange /= fac;
2594                 }
2595
2596                 if (snap == 1) {
2597                         if      (softrange < 2.10f) tempf = 0.1f  * floorf(10.0f * tempf);
2598                         else if (softrange < 21.0f) tempf = floorf(tempf);
2599                         else                        tempf = 10.0f * floorf(tempf / 10.0f);
2600                 }
2601                 else if (snap == 2) {
2602                         if      (softrange < 2.10f) tempf = 0.01f * floorf(100.0f * tempf);
2603                         else if (softrange < 21.0f) tempf = 0.1f  * floorf(10.0f * tempf);
2604                         else                        tempf = floor(tempf);
2605                 }
2606
2607                 if (fac != 1.0f)
2608                         tempf *= fac;
2609         }
2610
2611         return tempf;
2612 }
2613
2614 static float ui_numedit_apply_snap(int temp, float softmin, float softmax, int snap)
2615 {
2616         if (temp == softmin || temp == softmax)
2617                 return temp;
2618
2619         switch (snap) {
2620                 case 0:
2621                         break;
2622                 case 1:
2623                         temp = 10 * (temp / 10);
2624                         break;
2625                 case 2:
2626                         temp = 100 * (temp / 100);
2627                         break;
2628         }
2629
2630         return temp;
2631 }
2632
2633 static int ui_numedit_but_NUM(uiBut *but, uiHandleButtonData *data, float fac, int snap, int mx)
2634 {
2635         float deler, tempf, softmin, softmax, softrange;
2636         int lvalue, temp, changed = 0;
2637         const bool is_float = ui_is_but_float(but);
2638
2639         if (mx == data->draglastx)
2640                 return changed;
2641
2642         /* drag-lock - prevent unwanted scroll adjustments */
2643         /* change value (now 3) to adjust threshold in pixels */
2644         if (data->draglock) {
2645                 if (abs(mx - data->dragstartx) <= 3)
2646                         return changed;
2647
2648                 data->draglock = 0;
2649                 data->dragstartx = mx;  /* ignore mouse movement within drag-lock */
2650         }
2651
2652         softmin = but->softmin;
2653         softmax = but->softmax;
2654         softrange = softmax - softmin;
2655
2656         if (ui_is_a_warp_but(but)) {
2657                 /* Mouse location isn't screen clamped to the screen so use a linear mapping
2658                  * 2px == 1-int, or 1px == 1-ClickStep */
2659                 if (is_float) {
2660                         fac *= 0.01f * but->a1;
2661                         tempf = (float)data->startvalue + ((float)(mx - data->dragstartx) * fac);
2662                         tempf = ui_numedit_apply_snapf(but, tempf, softmin, softmax, softrange, snap);
2663
2664 #if 1       /* fake moving the click start, nicer for dragging back after passing the limit */
2665                         if (tempf < softmin) {
2666                                 data->dragstartx -= (softmin - tempf) / fac;
2667                                 tempf = softmin;
2668                         }
2669                         else if (tempf > softmax) {
2670                                 data->dragstartx += (tempf - softmax) / fac;
2671                                 tempf = softmax;
2672                         }
2673 #else
2674                         CLAMP(tempf, softmin, softmax);
2675 #endif
2676
2677                         if (tempf != (float)data->value) {
2678                                 data->dragchange = 1;
2679                                 data->value = tempf;
2680                                 changed = 1;
2681                         }
2682                 }
2683                 else {
2684                         if      (softrange > 256) fac = 1.0;        /* 1px == 1 */
2685                         else if (softrange >  32) fac = 1.0 / 2.0;  /* 2px == 1 */
2686                         else                      fac = 1.0 / 16.0; /* 16px == 1? */
2687
2688                         temp = data->startvalue + (((double)mx - data->dragstartx) * (double)fac);
2689                         temp = ui_numedit_apply_snap(temp, softmin, softmax, snap);
2690
2691 #if 1       /* fake moving the click start, nicer for dragging back after passing the limit */
2692                         if (temp < softmin) {
2693                                 data->dragstartx -= (softmin - temp) / fac;
2694                                 temp = softmin;
2695                         }
2696                         else if (temp > softmax) {
2697                                 data->dragstartx += (temp - softmax) / fac;
2698                                 temp = softmax;
2699                         }
2700 #else
2701                         CLAMP(temp, softmin, softmax);
2702 #endif
2703
2704                         if (temp != data->value) {
2705                                 data->dragchange = 1;
2706                                 data->value = temp;
2707                                 changed = 1;
2708                         }
2709                 }
2710
2711                 data->draglastx = mx;
2712         }
2713         else {
2714                 /* Use a non-linear mapping of the mouse drag especially for large floats (normal behavior) */
2715                 deler = 500;
2716                 if (!is_float) {
2717                         /* prevent large ranges from getting too out of control */
2718                         if      (softrange > 600) deler = powf(softrange, 0.75f);
2719                         else if (softrange <  25) deler = 50.0;
2720                         else if (softrange < 100) deler = 100.0;
2721                 }
2722                 deler /= fac;
2723
2724                 if ((is_float == true) && (softrange > 11)) {
2725                         /* non linear change in mouse input- good for high precicsion */
2726                         data->dragf += (((float)(mx - data->draglastx)) / deler) * (fabsf(mx - data->dragstartx) / 500.0f);
2727                 }
2728                 else if ((is_float == false) && (softrange > 129)) { /* only scale large int buttons */
2729                         /* non linear change in mouse input- good for high precicsionm ints need less fine tuning */
2730                         data->dragf += (((float)(mx - data->draglastx)) / deler) * (fabsf(mx - data->dragstartx) / 250.0f);
2731                 }
2732                 else {
2733                         /*no scaling */
2734                         data->dragf += ((float)(mx - data->draglastx)) / deler;
2735                 }
2736
2737                 CLAMP(data->dragf, 0.0f, 1.0f);
2738                 data->draglastx = mx;
2739                 tempf = (softmin + data->dragf * softrange);
2740
2741
2742                 if (!is_float) {
2743                         temp = floorf(tempf + 0.5f);
2744
2745                         temp = ui_numedit_apply_snap(temp, softmin, softmax, snap);
2746
2747                         CLAMP(temp, softmin, softmax);
2748                         lvalue = (int)data->value;
2749
2750                         if (temp != lvalue) {
2751                                 data->dragchange = 1;
2752                                 data->value = (double)temp;
2753                                 changed = 1;
2754                         }
2755                 }
2756                 else {
2757                         temp = 0;
2758                         tempf = ui_numedit_apply_snapf(but, tempf, softmin, softmax, softrange, snap);
2759
2760                         CLAMP(tempf, softmin, softmax);
2761
2762                         if (tempf != (float)data->value) {
2763                                 data->dragchange = 1;
2764                                 data->value = tempf;
2765                                 changed = 1;
2766                         }
2767                 }
2768         }
2769
2770
2771         return changed;
2772 }
2773
2774 static int ui_do_but_NUM(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, const wmEvent *event)
2775 {
2776         int mx, my; /* mouse location scaled to fit the UI */
2777         int screen_mx, screen_my; /* mouse location kept at screen pixel coords */
2778         int click = 0;
2779         int retval = WM_UI_HANDLER_CONTINUE;
2780
2781         mx = screen_mx = event->x;
2782         my = screen_my = event->y;
2783
2784         ui_window_to_block(data->region, block, &mx, &my);
2785
2786         if (data->state == BUTTON_STATE_HIGHLIGHT) {
2787                 int type = event->type, val = event->val;
2788
2789                 if (type == MOUSEPAN) {
2790                         ui_pan_to_scroll(event, &type, &val);
2791                 }
2792
2793                 /* XXX hardcoded keymap check.... */
2794                 if (type == MOUSEPAN && event->alt)
2795                         retval = WM_UI_HANDLER_BREAK; /* allow accumulating values, otherwise scrolling gets preference */
2796                 else if (type == WHEELDOWNMOUSE && event->alt) {
2797                         mx = but->rect.xmin;
2798                         click = 1;
2799                 }
2800                 else if (type == WHEELUPMOUSE && event->alt) {
2801                         mx = but->rect.xmax;
2802                         click = 1;
2803                 }
2804                 else if (event->val == KM_PRESS) {
2805                         if (ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->ctrl) {
2806                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2807                                 retval = WM_UI_HANDLER_BREAK;
2808                         }
2809                         else if (event->type == LEFTMOUSE) {
2810                                 data->dragstartx = data->draglastx = ui_is_a_warp_but(but) ? screen_mx : mx;
2811                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2812                                 retval = WM_UI_HANDLER_BREAK;
2813                         }
2814                         else if (ELEM(event->type, PADENTER, RETKEY) && event->val == KM_PRESS) {
2815                                 click = 1;
2816                         }
2817                         else if (event->type == MINUSKEY && event->val == KM_PRESS) {
2818                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2819                                 data->value = -data->value;
2820                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2821                                 retval = WM_UI_HANDLER_BREAK;
2822                         }
2823                 }
2824
2825         }
2826         else if (data->state == BUTTON_STATE_NUM_EDITING) {
2827                 if (event->type == ESCKEY) {
2828                         data->cancel = TRUE;
2829                         data->escapecancel = TRUE;
2830                         button_activate_state(C, but, BUTTON_STATE_EXIT);
2831                 }
2832                 else if (event->type == LEFTMOUSE && event->val != KM_PRESS) {
2833                         if (data->dragchange)
2834                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2835                         else
2836                                 click = 1;
2837                 }
2838                 else if (event->type == MOUSEMOVE) {
2839                         float fac;
2840                         int snap;
2841
2842                         fac = 1.0f;
2843                         if (event->shift) fac /= 10.0f;
2844                         if (event->alt)   fac /= 20.0f;
2845
2846                         snap = (event->ctrl) ? (event->shift) ? 2 : 1 : 0;
2847
2848                         if (ui_numedit_but_NUM(but, data, fac, snap, (ui_is_a_warp_but(but) ? screen_mx : mx)))
2849                                 ui_numedit_apply(C, block, but, data);
2850                 }
2851                 retval = WM_UI_HANDLER_BREAK;
2852         }
2853         else if (data->state == BUTTON_STATE_TEXT_EDITING) {
2854                 ui_do_but_textedit(C, block, but, data, event);
2855                 retval = WM_UI_HANDLER_BREAK;
2856         }
2857         else if (data->state == BUTTON_STATE_TEXT_SELECTING) {
2858                 ui_do_but_textedit_select(C, block, but, data, event);
2859                 retval = WM_UI_HANDLER_BREAK;
2860         }
2861
2862         if (click) {
2863                 /* we can click on the side arrows to increment/decrement,
2864                  * or click inside to edit the value directly */
2865                 float tempf, softmin, softmax;
2866                 int temp;
2867
2868                 softmin = but->softmin;
2869                 softmax = but->softmax;
2870
2871                 if (!ui_is_but_float(but)) {
2872                         if (mx < (but->rect.xmin + BLI_rctf_size_x(&but->rect) / 3 - 3)) {
2873                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2874
2875                                 temp = (int)data->value - 1;
2876                                 if (temp >= softmin && temp <= softmax)
2877                                         data->value = (double)temp;
2878                                 else
2879                                         data->cancel = TRUE;
2880
2881                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2882                         }
2883                         else if (mx > (but->rect.xmin + (2 * BLI_rctf_size_x(&but->rect) / 3) + 3)) {
2884                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2885
2886                                 temp = (int)data->value + 1;
2887                                 if (temp >= softmin && temp <= softmax)
2888                                         data->value = (double)temp;
2889                                 else
2890                                         data->cancel = TRUE;
2891
2892                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2893                         }
2894                         else {
2895                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2896                         }
2897                 }
2898                 else {
2899                         if (mx < (but->rect.xmin + BLI_rctf_size_x(&but->rect) / 3 - 3)) {
2900                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2901
2902                                 tempf = (float)data->value - 0.01f * but->a1;
2903                                 if (tempf < softmin) tempf = softmin;
2904                                 data->value = tempf;
2905
2906                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2907                         }
2908                         else if (mx > but->rect.xmin + (2 * (BLI_rctf_size_x(&but->rect) / 3) + 3)) {
2909                                 button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
2910
2911                                 tempf = (float)data->value + 0.01f * but->a1;
2912                                 if (tempf > softmax) tempf = softmax;
2913                                 data->value = tempf;
2914
2915                                 button_activate_state(C, but, BUTTON_STATE_EXIT);
2916                         }
2917                         else {
2918                                 button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
2919                         }
2920                 }
2921
2922                 retval = WM_UI_HANDLER_BREAK;
2923         }
2924
2925         return retval;
2926 }
2927
2928 static bool ui_numedit_but_SLI(uiBut *but, uiHandleButtonData *data,
2929                                const bool is_horizontal, const bool shift, const bool ctrl, int mx)
2930 {
2931         float deler, f, tempf, softmin, softmax, softrange;
2932         int temp, lvalue;
2933         bool changed = false;
2934         float mx_fl, my_fl;
2935         /* note, 'offs' is really from the widget drawing rounded corners see 'widget_numslider' */
2936         float offs;
2937
2938         softmin = but->softmin;
2939         softmax = but->softmax;
2940         softrange = softmax - softmin;
2941
2942         /* yes, 'mx' as both x/y is intentional */
2943         ui_mouse_scale_warp(data, mx, mx, &mx_fl, &my_fl, shift);
2944
2945         if (but->type == NUMSLI) {
2946                 offs = (BLI_rctf_size_y(&but->rect) / 2.0f) * but->aspect;
2947                 deler = BLI_rctf_size_x(&but->rect) - offs;
2948         }
2949         else if (but->type == HSVSLI) {
2950                 offs = (BLI_rctf_size_y(&but->rect) / 2.0f) * but->aspect;
2951                 deler = (BLI_rctf_size_x(&but->rect) / 2.0f) - offs;
2952         }
2953         else if (but->type == SCROLL) {
2954                 const float size = (is_horizontal) ? BLI_rctf_size_x(&but->rect) : -BLI_rctf_size_y(&but->rect);
2955                 deler = size * (but->softmax - but->softmin) / (but->softmax - but->softmin + but->a1);
2956                 offs = 0.0;
2957         }
2958         else {
2959                 offs = (BLI_rctf_size_y(&but->rect) / 2.0f) * but->aspect;
2960                 deler = (BLI_rctf_size_x(&but->rect) - offs);
2961         }
2962
2963         f = (mx_fl - data->dragstartx) / deler + data->dragfstart;
2964         CLAMP(f, 0.0f, 1.0f);
2965
2966
2967         /* deal with mouse correction */
2968 #ifdef USE_CONT_MOUSE_CORRECT
2969         if (ui_is_a_warp_but(but)) {
2970                 /* OK but can go outside bounds */
2971                 if (is_horizontal) {
2972                         data->ungrab_mval[0] = (but->rect.xmin + offs / but->aspect) + (f * deler);
2973                         data->ungrab_mval[1] = BLI_rctf_cent_y(&but->rect);
2974                 }
2975                 else {
2976                         data->ungrab_mval[1] = (but->rect.ymin + offs / but->aspect) + (f * deler);
2977                         data->ungrab_mval[0] = BLI_rctf_cent_x(&but->rect);
2978                 }
2979                 BLI_rctf_clamp_pt_v(&but->rect, data->ungrab_mval);
2980         }
2981 #endif