irr/src/CGUIEditBox.cpp

   1 // Copyright (C) 2002-2012 Nikolaus Gebhardt
   2 // This file is part of the "Irrlicht Engine".
   3 // For conditions of distribution and use, see copyright notice in irrlicht.h
   4
   5 #include "CGUIEditBox.h"
   6
   7 #include "IGUISkin.h"
   8 #include "IGUIEnvironment.h"
   9 #include "IGUIFont.h"
  10 #include "IVideoDriver.h"
  11 #include "rect.h"
  12 #include "os.h"
  13 #include "Keycodes.h"
  14
  15 /*
  16         todo:
  17         optional scrollbars
  18         ctrl+left/right to select word
  19         double click/ctrl click: word select + drag to select whole words, triple click to select line
  20         optional? dragging selected text
  21         numerical
  22 */
  23
  24 namespace irr
  25 {
  26 namespace gui
  27 {
  28
  29 //! constructor
  30 CGUIEditBox::CGUIEditBox(const wchar_t *text, bool border,
  31                 IGUIEnvironment *environment, IGUIElement *parent, s32 id,
  32                 const core::rect<s32> &rectangle) :
  33                 IGUIEditBox(environment, parent, id, rectangle),
  34                 OverwriteMode(false), MouseMarking(false),
  35                 Border(border), Background(true), OverrideColorEnabled(false), MarkBegin(0), MarkEnd(0),
  36                 OverrideColor(video::SColor(101, 255, 255, 255)), OverrideFont(0), LastBreakFont(0),
  37                 Operator(0), BlinkStartTime(0), CursorBlinkTime(350), CursorChar(L"_"), CursorPos(0), HScrollPos(0), VScrollPos(0), Max(0),
  38                 WordWrap(false), MultiLine(false), AutoScroll(true), PasswordBox(false),
  39                 PasswordChar(L'*'), HAlign(EGUIA_UPPERLEFT), VAlign(EGUIA_CENTER),
  40                 CurrentTextRect(0, 0, 1, 1), FrameRect(rectangle)
  41 {
  42 #ifdef _DEBUG
  43         setDebugName("CGUIEditBox");
  44 #endif
  45
  46         Text = text;
  47
  48         if (Environment)
  49                 Operator = Environment->getOSOperator();
  50
  51         if (Operator)
  52                 Operator->grab();
  53
  54         // this element can be tabbed to
  55         setTabStop(true);
  56         setTabOrder(-1);
  57
  58         calculateFrameRect();
  59         breakText();
  60
  61         calculateScrollPos();
  62 }
  63
  64 //! destructor
  65 CGUIEditBox::~CGUIEditBox()
  66 {
  67         if (OverrideFont)
  68                 OverrideFont->drop();
  69
  70         if (Operator)
  71                 Operator->drop();
  72 }
  73
  74 //! Sets another skin independent font.
  75 void CGUIEditBox::setOverrideFont(IGUIFont *font)
  76 {
  77         if (OverrideFont == font)
  78                 return;
  79
  80         if (OverrideFont)
  81                 OverrideFont->drop();
  82
  83         OverrideFont = font;
  84
  85         if (OverrideFont)
  86                 OverrideFont->grab();
  87
  88         breakText();
  89 }
  90
  91 //! Gets the override font (if any)
  92 IGUIFont *CGUIEditBox::getOverrideFont() const
  93 {
  94         return OverrideFont;
  95 }
  96
  97 //! Get the font which is used right now for drawing
  98 IGUIFont *CGUIEditBox::getActiveFont() const
  99 {
 100         if (OverrideFont)
 101                 return OverrideFont;
 102         IGUISkin *skin = Environment->getSkin();
 103         if (skin)
 104                 return skin->getFont();
 105         return 0;
 106 }
 107
 108 //! Sets another color for the text.
 109 void CGUIEditBox::setOverrideColor(video::SColor color)
 110 {
 111         OverrideColor = color;
 112         OverrideColorEnabled = true;
 113 }
 114
 115 video::SColor CGUIEditBox::getOverrideColor() const
 116 {
 117         return OverrideColor;
 118 }
 119
 120 //! Turns the border on or off
 121 void CGUIEditBox::setDrawBorder(bool border)
 122 {
 123         Border = border;
 124 }
 125
 126 //! Checks if border drawing is enabled
 127 bool CGUIEditBox::isDrawBorderEnabled() const
 128 {
 129         return Border;
 130 }
 131
 132 //! Sets whether to draw the background
 133 void CGUIEditBox::setDrawBackground(bool draw)
 134 {
 135         Background = draw;
 136 }
 137
 138 //! Checks if background drawing is enabled
 139 bool CGUIEditBox::isDrawBackgroundEnabled() const
 140 {
 141         return Background;
 142 }
 143
 144 //! Sets if the text should use the override color or the color in the gui skin.
 145 void CGUIEditBox::enableOverrideColor(bool enable)
 146 {
 147         OverrideColorEnabled = enable;
 148 }
 149
 150 bool CGUIEditBox::isOverrideColorEnabled() const
 151 {
 152         return OverrideColorEnabled;
 153 }
 154
 155 //! Enables or disables word wrap
 156 void CGUIEditBox::setWordWrap(bool enable)
 157 {
 158         WordWrap = enable;
 159         breakText();
 160 }
 161
 162 void CGUIEditBox::updateAbsolutePosition()
 163 {
 164         core::rect<s32> oldAbsoluteRect(AbsoluteRect);
 165         IGUIElement::updateAbsolutePosition();
 166         if (oldAbsoluteRect != AbsoluteRect) {
 167                 calculateFrameRect();
 168                 breakText();
 169                 calculateScrollPos();
 170         }
 171 }
 172
 173 //! Checks if word wrap is enabled
 174 bool CGUIEditBox::isWordWrapEnabled() const
 175 {
 176         return WordWrap;
 177 }
 178
 179 //! Enables or disables newlines.
 180 void CGUIEditBox::setMultiLine(bool enable)
 181 {
 182         MultiLine = enable;
 183         breakText();
 184 }
 185
 186 //! Checks if multi line editing is enabled
 187 bool CGUIEditBox::isMultiLineEnabled() const
 188 {
 189         return MultiLine;
 190 }
 191
 192 void CGUIEditBox::setPasswordBox(bool passwordBox, wchar_t passwordChar)
 193 {
 194         PasswordBox = passwordBox;
 195         if (PasswordBox) {
 196                 PasswordChar = passwordChar;
 197                 setMultiLine(false);
 198                 setWordWrap(false);
 199                 BrokenText.clear();
 200         }
 201 }
 202
 203 bool CGUIEditBox::isPasswordBox() const
 204 {
 205         return PasswordBox;
 206 }
 207
 208 //! Sets text justification
 209 void CGUIEditBox::setTextAlignment(EGUI_ALIGNMENT horizontal, EGUI_ALIGNMENT vertical)
 210 {
 211         HAlign = horizontal;
 212         VAlign = vertical;
 213 }
 214
 215 //! called if an event happened.
 216 bool CGUIEditBox::OnEvent(const SEvent &event)
 217 {
 218         if (isEnabled()) {
 219
 220                 switch (event.EventType) {
 221                 case EET_GUI_EVENT:
 222                         if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST) {
 223                                 if (event.GUIEvent.Caller == this) {
 224                                         MouseMarking = false;
 225                                         setTextMarkers(0, 0);
 226                                 }
 227                         }
 228                         break;
 229                 case EET_KEY_INPUT_EVENT:
 230                         if (processKey(event))
 231                                 return true;
 232                         break;
 233                 case EET_MOUSE_INPUT_EVENT:
 234                         if (processMouse(event))
 235                                 return true;
 236                         break;
 237                 case EET_STRING_INPUT_EVENT:
 238                         inputString(*event.StringInput.Str);
 239                         return true;
 240                         break;
 241                 default:
 242                         break;
 243                 }
 244         }
 245
 246         return IGUIElement::OnEvent(event);
 247 }
 248
 249 bool CGUIEditBox::processKey(const SEvent &event)
 250 {
 251         if (!event.KeyInput.PressedDown)
 252                 return false;
 253
 254         bool textChanged = false;
 255         s32 newMarkBegin = MarkBegin;
 256         s32 newMarkEnd = MarkEnd;
 257
 258         // control shortcut handling
 259
 260         if (event.KeyInput.Control) {
 261                 // german backlash '\' entered with control + '?'
 262                 if (event.KeyInput.Char == '\\') {
 263                         inputChar(event.KeyInput.Char);
 264                         return true;
 265                 }
 266
 267                 switch (event.KeyInput.Key) {
 268                 case KEY_KEY_A:
 269                         // select all
 270                         newMarkBegin = 0;
 271                         newMarkEnd = Text.size();
 272                         break;
 273                 case KEY_KEY_C:
 274                         // copy to clipboard
 275                         if (!PasswordBox && Operator && MarkBegin != MarkEnd) {
 276                                 const s32 realmbgn = MarkBegin < MarkEnd ? MarkBegin : MarkEnd;
 277                                 const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
 278
 279                                 core::stringc s;
 280                                 wStringToUTF8(s, Text.subString(realmbgn, realmend - realmbgn));
 281                                 Operator->copyToClipboard(s.c_str());
 282                         }
 283                         break;
 284                 case KEY_KEY_X:
 285                         // cut to the clipboard
 286                         if (!PasswordBox && Operator && MarkBegin != MarkEnd) {
 287                                 const s32 realmbgn = MarkBegin < MarkEnd ? MarkBegin : MarkEnd;
 288                                 const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
 289
 290                                 // copy
 291                                 core::stringc sc;
 292                                 wStringToUTF8(sc, Text.subString(realmbgn, realmend - realmbgn));
 293                                 Operator->copyToClipboard(sc.c_str());
 294
 295                                 if (isEnabled()) {
 296                                         // delete
 297                                         core::stringw s;
 298                                         s = Text.subString(0, realmbgn);
 299                                         s.append(Text.subString(realmend, Text.size() - realmend));
 300                                         Text = s;
 301
 302                                         CursorPos = realmbgn;
 303                                         newMarkBegin = 0;
 304                                         newMarkEnd = 0;
 305                                         textChanged = true;
 306                                 }
 307                         }
 308                         break;
 309                 case KEY_KEY_V:
 310                         if (!isEnabled())
 311                                 break;
 312
 313                         // paste from the clipboard
 314                         if (Operator) {
 315                                 const s32 realmbgn = MarkBegin < MarkEnd ? MarkBegin : MarkEnd;
 316                                 const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
 317
 318                                 // add the string
 319                                 const c8 *p = Operator->getTextFromClipboard();
 320                                 if (p) {
 321                                         irr::core::stringw widep;
 322                                         core::utf8ToWString(widep, p);
 323
 324                                         if (MarkBegin == MarkEnd) {
 325                                                 // insert text
 326                                                 core::stringw s = Text.subString(0, CursorPos);
 327                                                 s.append(widep);
 328                                                 s.append(Text.subString(CursorPos, Text.size() - CursorPos));
 329
 330                                                 if (!Max || s.size() <= Max) { // thx to Fish FH for fix
 331                                                         Text = s;
 332                                                         s = widep;
 333                                                         CursorPos += s.size();
 334                                                 }
 335                                         } else {
 336                                                 // replace text
 337
 338                                                 core::stringw s = Text.subString(0, realmbgn);
 339                                                 s.append(widep);
 340                                                 s.append(Text.subString(realmend, Text.size() - realmend));
 341
 342                                                 if (!Max || s.size() <= Max) { // thx to Fish FH for fix
 343                                                         Text = s;
 344                                                         s = widep;
 345                                                         CursorPos = realmbgn + s.size();
 346                                                 }
 347                                         }
 348                                 }
 349
 350                                 newMarkBegin = 0;
 351                                 newMarkEnd = 0;
 352                                 textChanged = true;
 353                         }
 354                         break;
 355                 case KEY_HOME:
 356                         // move/highlight to start of text
 357                         if (event.KeyInput.Shift) {
 358                                 newMarkEnd = CursorPos;
 359                                 newMarkBegin = 0;
 360                                 CursorPos = 0;
 361                         } else {
 362                                 CursorPos = 0;
 363                                 newMarkBegin = 0;
 364                                 newMarkEnd = 0;
 365                         }
 366                         break;
 367                 case KEY_END:
 368                         // move/highlight to end of text
 369                         if (event.KeyInput.Shift) {
 370                                 newMarkBegin = CursorPos;
 371                                 newMarkEnd = Text.size();
 372                                 CursorPos = 0;
 373                         } else {
 374                                 CursorPos = Text.size();
 375                                 newMarkBegin = 0;
 376                                 newMarkEnd = 0;
 377                         }
 378                         break;
 379                 default:
 380                         return false;
 381                 }
 382         }
 383         // Some special keys - but only handle them if KeyInput.Char is null as on some systems (X11) they might have same key-code as ansi-keys otherwise
 384         else if (event.KeyInput.Char == 0) {
 385                 switch (event.KeyInput.Key) {
 386                 case KEY_END: {
 387                         s32 p = Text.size();
 388                         if (WordWrap || MultiLine) {
 389                                 p = getLineFromPos(CursorPos);
 390                                 p = BrokenTextPositions[p] + (s32)BrokenText[p].size();
 391                                 if (p > 0 && (Text[p - 1] == L'\r' || Text[p - 1] == L'\n'))
 392                                         p -= 1;
 393                         }
 394
 395                         if (event.KeyInput.Shift) {
 396                                 if (MarkBegin == MarkEnd)
 397                                         newMarkBegin = CursorPos;
 398
 399                                 newMarkEnd = p;
 400                         } else {
 401                                 newMarkBegin = 0;
 402                                 newMarkEnd = 0;
 403                         }
 404                         CursorPos = p;
 405                         BlinkStartTime = os::Timer::getTime();
 406                 } break;
 407                 case KEY_HOME: {
 408
 409                         s32 p = 0;
 410                         if (WordWrap || MultiLine) {
 411                                 p = getLineFromPos(CursorPos);
 412                                 p = BrokenTextPositions[p];
 413                         }
 414
 415                         if (event.KeyInput.Shift) {
 416                                 if (MarkBegin == MarkEnd)
 417                                         newMarkBegin = CursorPos;
 418                                 newMarkEnd = p;
 419                         } else {
 420                                 newMarkBegin = 0;
 421                                 newMarkEnd = 0;
 422                         }
 423                         CursorPos = p;
 424                         BlinkStartTime = os::Timer::getTime();
 425                 } break;
 426                 case KEY_LEFT:
 427
 428                         if (event.KeyInput.Shift) {
 429                                 if (CursorPos > 0) {
 430                                         if (MarkBegin == MarkEnd)
 431                                                 newMarkBegin = CursorPos;
 432
 433                                         newMarkEnd = CursorPos - 1;
 434                                 }
 435                         } else {
 436                                 newMarkBegin = 0;
 437                                 newMarkEnd = 0;
 438                         }
 439
 440                         if (CursorPos > 0)
 441                                 CursorPos--;
 442                         BlinkStartTime = os::Timer::getTime();
 443                         break;
 444
 445                 case KEY_RIGHT:
 446                         if (event.KeyInput.Shift) {
 447                                 if (Text.size() > (u32)CursorPos) {
 448                                         if (MarkBegin == MarkEnd)
 449                                                 newMarkBegin = CursorPos;
 450
 451                                         newMarkEnd = CursorPos + 1;
 452                                 }
 453                         } else {
 454                                 newMarkBegin = 0;
 455                                 newMarkEnd = 0;
 456                         }
 457
 458                         if (Text.size() > (u32)CursorPos)
 459                                 CursorPos++;
 460                         BlinkStartTime = os::Timer::getTime();
 461                         break;
 462                 case KEY_UP:
 463                         if (MultiLine || (WordWrap && BrokenText.size() > 1)) {
 464                                 s32 lineNo = getLineFromPos(CursorPos);
 465                                 s32 mb = (MarkBegin == MarkEnd) ? CursorPos : (MarkBegin > MarkEnd ? MarkBegin : MarkEnd);
 466                                 if (lineNo > 0) {
 467                                         s32 cp = CursorPos - BrokenTextPositions[lineNo];
 468                                         if ((s32)BrokenText[lineNo - 1].size() < cp)
 469                                                 CursorPos = BrokenTextPositions[lineNo - 1] + core::max_((u32)1, BrokenText[lineNo - 1].size()) - 1;
 470                                         else
 471                                                 CursorPos = BrokenTextPositions[lineNo - 1] + cp;
 472                                 }
 473
 474                                 if (event.KeyInput.Shift) {
 475                                         newMarkBegin = mb;
 476                                         newMarkEnd = CursorPos;
 477                                 } else {
 478                                         newMarkBegin = 0;
 479                                         newMarkEnd = 0;
 480                                 }
 481
 482                         } else {
 483                                 return false;
 484                         }
 485                         break;
 486                 case KEY_DOWN:
 487                         if (MultiLine || (WordWrap && BrokenText.size() > 1)) {
 488                                 s32 lineNo = getLineFromPos(CursorPos);
 489                                 s32 mb = (MarkBegin == MarkEnd) ? CursorPos : (MarkBegin < MarkEnd ? MarkBegin : MarkEnd);
 490                                 if (lineNo < (s32)BrokenText.size() - 1) {
 491                                         s32 cp = CursorPos - BrokenTextPositions[lineNo];
 492                                         if ((s32)BrokenText[lineNo + 1].size() < cp)
 493                                                 CursorPos = BrokenTextPositions[lineNo + 1] + core::max_((u32)1, BrokenText[lineNo + 1].size()) - 1;
 494                                         else
 495                                                 CursorPos = BrokenTextPositions[lineNo + 1] + cp;
 496                                 }
 497
 498                                 if (event.KeyInput.Shift) {
 499                                         newMarkBegin = mb;
 500                                         newMarkEnd = CursorPos;
 501                                 } else {
 502                                         newMarkBegin = 0;
 503                                         newMarkEnd = 0;
 504                                 }
 505
 506                         } else {
 507                                 return false;
 508                         }
 509                         break;
 510                 case KEY_INSERT:
 511                         if (!isEnabled())
 512                                 break;
 513
 514                         OverwriteMode = !OverwriteMode;
 515                         break;
 516                 case KEY_DELETE:
 517                         if (!isEnabled())
 518                                 break;
 519
 520                         if (keyDelete()) {
 521                                 BlinkStartTime = os::Timer::getTime();
 522                                 newMarkBegin = 0;
 523                                 newMarkEnd = 0;
 524                                 textChanged = true;
 525                         }
 526                         break;
 527                 default:
 528                         return false;
 529                 }
 530         } else {
 531                 // default keyboard handling
 532                 switch (event.KeyInput.Key) {
 533                 case KEY_RETURN:
 534                         if (MultiLine) {
 535                                 inputChar(L'\n');
 536                         } else {
 537                                 calculateScrollPos();
 538                                 sendGuiEvent(EGET_EDITBOX_ENTER);
 539                         }
 540                         return true;
 541
 542                 case KEY_BACK:
 543                         if (!isEnabled())
 544                                 break;
 545
 546                         if (Text.size()) {
 547                                 core::stringw s;
 548
 549                                 if (MarkBegin != MarkEnd) {
 550                                         // delete marked text
 551                                         const s32 realmbgn = MarkBegin < MarkEnd ? MarkBegin : MarkEnd;
 552                                         const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
 553
 554                                         s = Text.subString(0, realmbgn);
 555                                         s.append(Text.subString(realmend, Text.size() - realmend));
 556                                         Text = s;
 557
 558                                         CursorPos = realmbgn;
 559                                 } else {
 560                                         // delete text behind cursor
 561                                         if (CursorPos > 0)
 562                                                 s = Text.subString(0, CursorPos - 1);
 563                                         else
 564                                                 s = L"";
 565                                         s.append(Text.subString(CursorPos, Text.size() - CursorPos));
 566                                         Text = s;
 567                                         --CursorPos;
 568                                 }
 569
 570                                 if (CursorPos < 0)
 571                                         CursorPos = 0;
 572                                 BlinkStartTime = os::Timer::getTime();
 573                                 newMarkBegin = 0;
 574                                 newMarkEnd = 0;
 575                                 textChanged = true;
 576                         }
 577                         break;
 578
 579                 case KEY_DELETE:
 580
 581                         // At least on X11 we get a char with 127 when the delete key is pressed.
 582                         // We get no char when the delete key on numkeys is pressed with numlock off (handled in the other case calling keyDelete as Char is then 0).
 583                         // We get a keykode != 127 when delete key on numlock is pressed with numlock on.
 584                         if (event.KeyInput.Char == 127) {
 585                                 if (!isEnabled())
 586                                         break;
 587
 588                                 if (keyDelete()) {
 589                                         BlinkStartTime = os::Timer::getTime();
 590                                         newMarkBegin = 0;
 591                                         newMarkEnd = 0;
 592                                         textChanged = true;
 593                                 }
 594                                 break;
 595                         } else {
 596                                 inputChar(event.KeyInput.Char);
 597                                 return true;
 598                         }
 599
 600                 case KEY_ESCAPE:
 601                 case KEY_TAB:
 602                 case KEY_SHIFT:
 603                 case KEY_F1:
 604                 case KEY_F2:
 605                 case KEY_F3:
 606                 case KEY_F4:
 607                 case KEY_F5:
 608                 case KEY_F6:
 609                 case KEY_F7:
 610                 case KEY_F8:
 611                 case KEY_F9:
 612                 case KEY_F10:
 613                 case KEY_F11:
 614                 case KEY_F12:
 615                 case KEY_F13:
 616                 case KEY_F14:
 617                 case KEY_F15:
 618                 case KEY_F16:
 619                 case KEY_F17:
 620                 case KEY_F18:
 621                 case KEY_F19:
 622                 case KEY_F20:
 623                 case KEY_F21:
 624                 case KEY_F22:
 625                 case KEY_F23:
 626                 case KEY_F24:
 627                         // ignore these keys
 628                         return false;
 629
 630                 default:
 631                         inputChar(event.KeyInput.Char);
 632                         return true;
 633                 }
 634         }
 635
 636         // Set new text markers
 637         setTextMarkers(newMarkBegin, newMarkEnd);
 638
 639         // break the text if it has changed
 640         if (textChanged) {
 641                 breakText();
 642                 calculateScrollPos();
 643                 sendGuiEvent(EGET_EDITBOX_CHANGED);
 644         } else {
 645                 calculateScrollPos();
 646         }
 647
 648         return true;
 649 }
 650
 651 bool CGUIEditBox::keyDelete()
 652 {
 653         if (Text.size() != 0) {
 654                 core::stringw s;
 655
 656                 if (MarkBegin != MarkEnd) {
 657                         // delete marked text
 658                         const s32 realmbgn = MarkBegin < MarkEnd ? MarkBegin : MarkEnd;
 659                         const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
 660
 661                         s = Text.subString(0, realmbgn);
 662                         s.append(Text.subString(realmend, Text.size() - realmend));
 663                         Text = s;
 664
 665                         CursorPos = realmbgn;
 666                 } else {
 667                         // delete text before cursor
 668                         s = Text.subString(0, CursorPos);
 669                         s.append(Text.subString(CursorPos + 1, Text.size() - CursorPos - 1));
 670                         Text = s;
 671                 }
 672
 673                 if (CursorPos > (s32)Text.size())
 674                         CursorPos = (s32)Text.size();
 675
 676                 return true;
 677         }
 678
 679         return false;
 680 }
 681
 682 //! draws the element and its children
 683 void CGUIEditBox::draw()
 684 {
 685         if (!IsVisible)
 686                 return;
 687
 688         const bool focus = Environment->hasFocus(this);
 689
 690         IGUISkin *skin = Environment->getSkin();
 691         if (!skin)
 692                 return;
 693
 694         EGUI_DEFAULT_COLOR bgCol = EGDC_GRAY_EDITABLE;
 695         if (isEnabled())
 696                 bgCol = focus ? EGDC_FOCUSED_EDITABLE : EGDC_EDITABLE;
 697
 698         if (!Border && Background) {
 699                 skin->draw2DRectangle(this, skin->getColor(bgCol), AbsoluteRect, &AbsoluteClippingRect);
 700         }
 701
 702         if (Border) {
 703                 // draw the border
 704                 skin->draw3DSunkenPane(this, skin->getColor(bgCol), false, Background, AbsoluteRect, &AbsoluteClippingRect);
 705
 706                 calculateFrameRect();
 707         }
 708
 709         core::rect<s32> localClipRect = FrameRect;
 710         localClipRect.clipAgainst(AbsoluteClippingRect);
 711
 712         // draw the text
 713
 714         IGUIFont *font = getActiveFont();
 715
 716         s32 cursorLine = 0;
 717         s32 charcursorpos = 0;
 718
 719         if (font) {
 720                 if (LastBreakFont != font) {
 721                         breakText();
 722                 }
 723
 724                 // calculate cursor pos
 725
 726                 core::stringw *txtLine = &Text;
 727                 s32 startPos = 0;
 728
 729                 core::stringw s, s2;
 730
 731                 // get mark position
 732                 const bool ml = (!PasswordBox && (WordWrap || MultiLine));
 733                 const s32 realmbgn = MarkBegin < MarkEnd ? MarkBegin : MarkEnd;
 734                 const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
 735                 const s32 hlineStart = ml ? getLineFromPos(realmbgn) : 0;
 736                 const s32 hlineCount = ml ? getLineFromPos(realmend) - hlineStart + 1 : 1;
 737                 const s32 lineCount = ml ? BrokenText.size() : 1;
 738
 739                 // Save the override color information.
 740                 // Then, alter it if the edit box is disabled.
 741                 const bool prevOver = OverrideColorEnabled;
 742                 const video::SColor prevColor = OverrideColor;
 743
 744                 if (Text.size()) {
 745                         if (!isEnabled() && !OverrideColorEnabled) {
 746                                 OverrideColorEnabled = true;
 747                                 OverrideColor = skin->getColor(EGDC_GRAY_TEXT);
 748                         }
 749
 750                         for (s32 i = 0; i < lineCount; ++i) {
 751                                 setTextRect(i);
 752
 753                                 // clipping test - don't draw anything outside the visible area
 754                                 core::rect<s32> c = localClipRect;
 755                                 c.clipAgainst(CurrentTextRect);
 756                                 if (!c.isValid())
 757                                         continue;
 758
 759                                 // get current line
 760                                 if (PasswordBox) {
 761                                         if (BrokenText.size() != 1) {
 762                                                 BrokenText.clear();
 763                                                 BrokenText.push_back(core::stringw());
 764                                         }
 765                                         if (BrokenText[0].size() != Text.size()) {
 766                                                 BrokenText[0] = Text;
 767                                                 for (u32 q = 0; q < Text.size(); ++q) {
 768                                                         BrokenText[0][q] = PasswordChar;
 769                                                 }
 770                                         }
 771                                         txtLine = &BrokenText[0];
 772                                         startPos = 0;
 773                                 } else {
 774                                         txtLine = ml ? &BrokenText[i] : &Text;
 775                                         startPos = ml ? BrokenTextPositions[i] : 0;
 776                                 }
 777
 778                                 // draw normal text
 779                                 font->draw(txtLine->c_str(), CurrentTextRect,
 780                                                 OverrideColorEnabled ? OverrideColor : skin->getColor(EGDC_BUTTON_TEXT),
 781                                                 false, true, &localClipRect);
 782
 783                                 // draw mark and marked text
 784                                 if (focus && MarkBegin != MarkEnd && i >= hlineStart && i < hlineStart + hlineCount) {
 785
 786                                         s32 mbegin = 0, mend = 0;
 787                                         s32 lineStartPos = 0, lineEndPos = txtLine->size();
 788
 789                                         if (i == hlineStart) {
 790                                                 // highlight start is on this line
 791                                                 s = txtLine->subString(0, realmbgn - startPos);
 792                                                 mbegin = font->getDimension(s.c_str()).Width;
 793
 794                                                 // deal with kerning
 795                                                 mbegin += font->getKerningWidth(
 796                                                                 &((*txtLine)[realmbgn - startPos]),
 797                                                                 realmbgn - startPos > 0 ? &((*txtLine)[realmbgn - startPos - 1]) : 0);
 798
 799                                                 lineStartPos = realmbgn - startPos;
 800                                         }
 801                                         if (i == hlineStart + hlineCount - 1) {
 802                                                 // highlight end is on this line
 803                                                 s2 = txtLine->subString(0, realmend - startPos);
 804                                                 mend = font->getDimension(s2.c_str()).Width;
 805                                                 lineEndPos = (s32)s2.size();
 806                                         } else
 807                                                 mend = font->getDimension(txtLine->c_str()).Width;
 808
 809                                         CurrentTextRect.UpperLeftCorner.X += mbegin;
 810                                         CurrentTextRect.LowerRightCorner.X = CurrentTextRect.UpperLeftCorner.X + mend - mbegin;
 811
 812                                         // draw mark
 813                                         skin->draw2DRectangle(this, skin->getColor(EGDC_HIGH_LIGHT), CurrentTextRect, &localClipRect);
 814
 815                                         // draw marked text
 816                                         s = txtLine->subString(lineStartPos, lineEndPos - lineStartPos);
 817
 818                                         if (s.size())
 819                                                 font->draw(s.c_str(), CurrentTextRect,
 820                                                                 OverrideColorEnabled ? OverrideColor : skin->getColor(EGDC_HIGH_LIGHT_TEXT),
 821                                                                 false, true, &localClipRect);
 822                                 }
 823                         }
 824
 825                         // Return the override color information to its previous settings.
 826                         OverrideColorEnabled = prevOver;
 827                         OverrideColor = prevColor;
 828                 }
 829
 830                 // draw cursor
 831                 if (isEnabled()) {
 832                         if (WordWrap || MultiLine) {
 833                                 cursorLine = getLineFromPos(CursorPos);
 834                                 txtLine = &BrokenText[cursorLine];
 835                                 startPos = BrokenTextPositions[cursorLine];
 836                         }
 837                         s = txtLine->subString(0, CursorPos - startPos);
 838                         charcursorpos = font->getDimension(s.c_str()).Width +
 839                                                         font->getKerningWidth(CursorChar.c_str(), CursorPos - startPos > 0 ? &((*txtLine)[CursorPos - startPos - 1]) : 0);
 840
 841                         if (focus && (CursorBlinkTime == 0 || (os::Timer::getTime() - BlinkStartTime) % (2 * CursorBlinkTime) < CursorBlinkTime)) {
 842                                 setTextRect(cursorLine);
 843                                 CurrentTextRect.UpperLeftCorner.X += charcursorpos;
 844
 845                                 if (OverwriteMode) {
 846                                         core::stringw character = Text.subString(CursorPos, 1);
 847                                         s32 mend = font->getDimension(character.c_str()).Width;
 848                                         // Make sure the cursor box has at least some width to it
 849                                         if (mend <= 0)
 850                                                 mend = font->getDimension(CursorChar.c_str()).Width;
 851                                         CurrentTextRect.LowerRightCorner.X = CurrentTextRect.UpperLeftCorner.X + mend;
 852                                         skin->draw2DRectangle(this, skin->getColor(EGDC_HIGH_LIGHT), CurrentTextRect, &localClipRect);
 853                                         font->draw(character.c_str(), CurrentTextRect,
 854                                                         OverrideColorEnabled ? OverrideColor : skin->getColor(EGDC_HIGH_LIGHT_TEXT),
 855                                                         false, true, &localClipRect);
 856                                 } else {
 857                                         font->draw(CursorChar, CurrentTextRect,
 858                                                         OverrideColorEnabled ? OverrideColor : skin->getColor(EGDC_BUTTON_TEXT),
 859                                                         false, true, &localClipRect);
 860                                 }
 861                         }
 862                 }
 863         }
 864
 865         // draw children
 866         IGUIElement::draw();
 867 }
 868
 869 //! Sets the new caption of this element.
 870 void CGUIEditBox::setText(const wchar_t *text)
 871 {
 872         Text = text;
 873         if (u32(CursorPos) > Text.size())
 874                 CursorPos = Text.size();
 875         HScrollPos = 0;
 876         breakText();
 877 }
 878
 879 //! Enables or disables automatic scrolling with cursor position
 880 //! \param enable: If set to true, the text will move around with the cursor position
 881 void CGUIEditBox::setAutoScroll(bool enable)
 882 {
 883         AutoScroll = enable;
 884 }
 885
 886 //! Checks to see if automatic scrolling is enabled
 887 //! \return true if automatic scrolling is enabled, false if not
 888 bool CGUIEditBox::isAutoScrollEnabled() const
 889 {
 890         return AutoScroll;
 891 }
 892
 893 //! Gets the area of the text in the edit box
 894 //! \return Returns the size in pixels of the text
 895 core::dimension2du CGUIEditBox::getTextDimension()
 896 {
 897         core::rect<s32> ret;
 898
 899         setTextRect(0);
 900         ret = CurrentTextRect;
 901
 902         for (u32 i = 1; i < BrokenText.size(); ++i) {
 903                 setTextRect(i);
 904                 ret.addInternalPoint(CurrentTextRect.UpperLeftCorner);
 905                 ret.addInternalPoint(CurrentTextRect.LowerRightCorner);
 906         }
 907
 908         return core::dimension2du(ret.getSize());
 909 }
 910
 911 //! Sets the maximum amount of characters which may be entered in the box.
 912 //! \param max: Maximum amount of characters. If 0, the character amount is
 913 //! infinity.
 914 void CGUIEditBox::setMax(u32 max)
 915 {
 916         Max = max;
 917
 918         if (Text.size() > Max && Max != 0)
 919                 Text = Text.subString(0, Max);
 920 }
 921
 922 //! Returns maximum amount of characters, previously set by setMax();
 923 u32 CGUIEditBox::getMax() const
 924 {
 925         return Max;
 926 }
 927
 928 //! Set the character used for the cursor.
 929 /** By default it's "_" */
 930 void CGUIEditBox::setCursorChar(const wchar_t cursorChar)
 931 {
 932         CursorChar[0] = cursorChar;
 933 }
 934
 935 //! Get the character used for the cursor.
 936 wchar_t CGUIEditBox::getCursorChar() const
 937 {
 938         return CursorChar[0];
 939 }
 940
 941 //! Set the blinktime for the cursor. 2x blinktime is one full cycle.
 942 void CGUIEditBox::setCursorBlinkTime(irr::u32 timeMs)
 943 {
 944         CursorBlinkTime = timeMs;
 945 }
 946
 947 //! Get the cursor blinktime
 948 irr::u32 CGUIEditBox::getCursorBlinkTime() const
 949 {
 950         return CursorBlinkTime;
 951 }
 952
 953 bool CGUIEditBox::processMouse(const SEvent &event)
 954 {
 955         switch (event.MouseInput.Event) {
 956         case irr::EMIE_LMOUSE_LEFT_UP:
 957                 if (Environment->hasFocus(this)) {
 958                         CursorPos = getCursorPos(event.MouseInput.X, event.MouseInput.Y);
 959                         if (MouseMarking) {
 960                                 setTextMarkers(MarkBegin, CursorPos);
 961                         }
 962                         MouseMarking = false;
 963                         calculateScrollPos();
 964                         return true;
 965                 }
 966                 break;
 967         case irr::EMIE_MOUSE_MOVED: {
 968                 if (MouseMarking) {
 969                         CursorPos = getCursorPos(event.MouseInput.X, event.MouseInput.Y);
 970                         setTextMarkers(MarkBegin, CursorPos);
 971                         calculateScrollPos();
 972                         return true;
 973                 }
 974         } break;
 975         case EMIE_LMOUSE_PRESSED_DOWN:
 976                 if (!Environment->hasFocus(this)) { // can happen when events are manually send to the element
 977                         BlinkStartTime = os::Timer::getTime();
 978                         MouseMarking = true;
 979                         CursorPos = getCursorPos(event.MouseInput.X, event.MouseInput.Y);
 980                         setTextMarkers(CursorPos, CursorPos);
 981                         calculateScrollPos();
 982                         return true;
 983                 } else {
 984                         if (!AbsoluteClippingRect.isPointInside(
 985                                                 core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y))) {
 986                                 return false;
 987                         } else {
 988                                 // move cursor
 989                                 CursorPos = getCursorPos(event.MouseInput.X, event.MouseInput.Y);
 990
 991                                 s32 newMarkBegin = MarkBegin;
 992                                 if (!MouseMarking)
 993                                         newMarkBegin = CursorPos;
 994
 995                                 MouseMarking = true;
 996                                 setTextMarkers(newMarkBegin, CursorPos);
 997                                 calculateScrollPos();
 998                                 return true;
 999                         }
1000                 }
1001         case EMIE_MMOUSE_PRESSED_DOWN: {
1002                 if (!AbsoluteClippingRect.isPointInside(core::position2d<s32>(
1003                                         event.MouseInput.X, event.MouseInput.Y)))
1004                         return false;
1005
1006                 if (!Environment->hasFocus(this)) {
1007                         BlinkStartTime = os::Timer::getTime();
1008                 }
1009
1010                 // move cursor and disable marking
1011                 CursorPos = getCursorPos(event.MouseInput.X, event.MouseInput.Y);
1012                 MouseMarking = false;
1013                 setTextMarkers(CursorPos, CursorPos);
1014
1015                 // paste from the primary selection
1016                 inputString([&] {
1017                         irr::core::stringw inserted_text;
1018                         if (!Operator)
1019                                 return inserted_text;
1020                         const c8 *inserted_text_utf8 = Operator->getTextFromPrimarySelection();
1021                         if (!inserted_text_utf8)
1022                                 return inserted_text;
1023                         core::utf8ToWString(inserted_text, inserted_text_utf8);
1024                         return inserted_text;
1025                 }());
1026
1027                 return true;
1028         }
1029         default:
1030                 break;
1031         }
1032
1033         return false;
1034 }
1035
1036 s32 CGUIEditBox::getCursorPos(s32 x, s32 y)
1037 {
1038         IGUIFont *font = getActiveFont();
1039
1040         const u32 lineCount = (WordWrap || MultiLine) ? BrokenText.size() : 1;
1041
1042         core::stringw *txtLine = 0;
1043         s32 startPos = 0;
1044         x += 3;
1045
1046         for (u32 i = 0; i < lineCount; ++i) {
1047                 setTextRect(i);
1048                 if (i == 0 && y < CurrentTextRect.UpperLeftCorner.Y)
1049                         y = CurrentTextRect.UpperLeftCorner.Y;
1050                 if (i == lineCount - 1 && y > CurrentTextRect.LowerRightCorner.Y)
1051                         y = CurrentTextRect.LowerRightCorner.Y;
1052
1053                 // is it inside this region?
1054                 if (y >= CurrentTextRect.UpperLeftCorner.Y && y <= CurrentTextRect.LowerRightCorner.Y) {
1055                         // we've found the clicked line
1056                         txtLine = (WordWrap || MultiLine) ? &BrokenText[i] : &Text;
1057                         startPos = (WordWrap || MultiLine) ? BrokenTextPositions[i] : 0;
1058                         break;
1059                 }
1060         }
1061
1062         if (x < CurrentTextRect.UpperLeftCorner.X)
1063                 x = CurrentTextRect.UpperLeftCorner.X;
1064
1065         if (!txtLine)
1066                 return 0;
1067
1068         s32 idx = font->getCharacterFromPos(txtLine->c_str(), x - CurrentTextRect.UpperLeftCorner.X);
1069
1070         // click was on or left of the line
1071         if (idx != -1)
1072                 return idx + startPos;
1073
1074         // click was off the right edge of the line, go to end.
1075         return txtLine->size() + startPos;
1076 }
1077
1078 //! Breaks the single text line.
1079 void CGUIEditBox::breakText()
1080 {
1081         if ((!WordWrap && !MultiLine))
1082                 return;
1083
1084         BrokenText.clear(); // need to reallocate :/
1085         BrokenTextPositions.set_used(0);
1086
1087         IGUIFont *font = getActiveFont();
1088         if (!font)
1089                 return;
1090
1091         LastBreakFont = font;
1092
1093         core::stringw line;
1094         core::stringw word;
1095         core::stringw whitespace;
1096         s32 lastLineStart = 0;
1097         s32 size = Text.size();
1098         s32 length = 0;
1099         s32 elWidth = RelativeRect.getWidth() - 6;
1100         wchar_t c;
1101
1102         for (s32 i = 0; i < size; ++i) {
1103                 c = Text[i];
1104                 bool lineBreak = false;
1105
1106                 if (c == L'\r') { // Mac or Windows breaks
1107                         lineBreak = true;
1108                         c = 0;
1109                         if (Text[i + 1] == L'\n') { // Windows breaks
1110                                 // TODO: I (Michael) think that we shouldn't change the text given by the user for whatever reason.
1111                                 // Instead rework the cursor positioning to be able to handle this (but not in stable release
1112                                 // branch as users might already expect this behavior).
1113                                 Text.erase(i + 1);
1114                                 --size;
1115                                 if (CursorPos > i)
1116                                         --CursorPos;
1117                         }
1118                 } else if (c == L'\n') { // Unix breaks
1119                         lineBreak = true;
1120                         c = 0;
1121                 }
1122
1123                 // don't break if we're not a multi-line edit box
1124                 if (!MultiLine)
1125                         lineBreak = false;
1126
1127                 if (c == L' ' || c == 0 || i == (size - 1)) {
1128                         // here comes the next whitespace, look if
1129                         // we can break the last word to the next line
1130                         // We also break whitespace, otherwise cursor would vanish beside the right border.
1131                         s32 whitelgth = font->getDimension(whitespace.c_str()).Width;
1132                         s32 worldlgth = font->getDimension(word.c_str()).Width;
1133
1134                         if (WordWrap && length + worldlgth + whitelgth > elWidth && line.size() > 0) {
1135                                 // break to next line
1136                                 length = worldlgth;
1137                                 BrokenText.push_back(line);
1138                                 BrokenTextPositions.push_back(lastLineStart);
1139                                 lastLineStart = i - (s32)word.size();
1140                                 line = word;
1141                         } else {
1142                                 // add word to line
1143                                 line += whitespace;
1144                                 line += word;
1145                                 length += whitelgth + worldlgth;
1146                         }
1147
1148                         word = L"";
1149                         whitespace = L"";
1150
1151                         if (c)
1152                                 whitespace += c;
1153
1154                         // compute line break
1155                         if (lineBreak) {
1156                                 line += whitespace;
1157                                 line += word;
1158                                 BrokenText.push_back(line);
1159                                 BrokenTextPositions.push_back(lastLineStart);
1160                                 lastLineStart = i + 1;
1161                                 line = L"";
1162                                 word = L"";
1163                                 whitespace = L"";
1164                                 length = 0;
1165                         }
1166                 } else {
1167                         // yippee this is a word..
1168                         word += c;
1169                 }
1170         }
1171
1172         line += whitespace;
1173         line += word;
1174         BrokenText.push_back(line);
1175         BrokenTextPositions.push_back(lastLineStart);
1176 }
1177
1178 // TODO: that function does interpret VAlign according to line-index (indexed line is placed on top-center-bottom)
1179 // but HAlign according to line-width (pixels) and not by row.
1180 // Intuitively I suppose HAlign handling is better as VScrollPos should handle the line-scrolling.
1181 // But please no one change this without also rewriting (and this time fucking testing!!!) autoscrolling (I noticed this when fixing the old autoscrolling).
1182 void CGUIEditBox::setTextRect(s32 line)
1183 {
1184         if (line < 0)
1185                 return;
1186
1187         IGUIFont *font = getActiveFont();
1188         if (!font)
1189                 return;
1190
1191         core::dimension2du d;
1192
1193         // get text dimension
1194         const u32 lineCount = (WordWrap || MultiLine) ? BrokenText.size() : 1;
1195         if (WordWrap || MultiLine) {
1196                 d = font->getDimension(BrokenText[line].c_str());
1197         } else {
1198                 d = font->getDimension(Text.c_str());
1199                 d.Height = AbsoluteRect.getHeight();
1200         }
1201         d.Height += font->getKerningHeight();
1202
1203         // justification
1204         switch (HAlign) {
1205         case EGUIA_CENTER:
1206                 // align to h centre
1207                 CurrentTextRect.UpperLeftCorner.X = (FrameRect.getWidth() / 2) - (d.Width / 2);
1208                 CurrentTextRect.LowerRightCorner.X = (FrameRect.getWidth() / 2) + (d.Width / 2);
1209                 break;
1210         case EGUIA_LOWERRIGHT:
1211                 // align to right edge
1212                 CurrentTextRect.UpperLeftCorner.X = FrameRect.getWidth() - d.Width;
1213                 CurrentTextRect.LowerRightCorner.X = FrameRect.getWidth();
1214                 break;
1215         default:
1216                 // align to left edge
1217                 CurrentTextRect.UpperLeftCorner.X = 0;
1218                 CurrentTextRect.LowerRightCorner.X = d.Width;
1219         }
1220
1221         switch (VAlign) {
1222         case EGUIA_CENTER:
1223                 // align to v centre
1224                 CurrentTextRect.UpperLeftCorner.Y =
1225                                 (FrameRect.getHeight() / 2) - (lineCount * d.Height) / 2 + d.Height * line;
1226                 break;
1227         case EGUIA_LOWERRIGHT:
1228                 // align to bottom edge
1229                 CurrentTextRect.UpperLeftCorner.Y =
1230                                 FrameRect.getHeight() - lineCount * d.Height + d.Height * line;
1231                 break;
1232         default:
1233                 // align to top edge
1234                 CurrentTextRect.UpperLeftCorner.Y = d.Height * line;
1235                 break;
1236         }
1237
1238         CurrentTextRect.UpperLeftCorner.X -= HScrollPos;
1239         CurrentTextRect.LowerRightCorner.X -= HScrollPos;
1240         CurrentTextRect.UpperLeftCorner.Y -= VScrollPos;
1241         CurrentTextRect.LowerRightCorner.Y = CurrentTextRect.UpperLeftCorner.Y + d.Height;
1242
1243         CurrentTextRect += FrameRect.UpperLeftCorner;
1244 }
1245
1246 s32 CGUIEditBox::getLineFromPos(s32 pos)
1247 {
1248         if (!WordWrap && !MultiLine)
1249                 return 0;
1250
1251         s32 i = 0;
1252         while (i < (s32)BrokenTextPositions.size()) {
1253                 if (BrokenTextPositions[i] > pos)
1254                         return i - 1;
1255                 ++i;
1256         }
1257         return (s32)BrokenTextPositions.size() - 1;
1258 }
1259
1260 void CGUIEditBox::inputChar(wchar_t c)
1261 {
1262         if (c == 0)
1263                 return;
1264         core::stringw s(&c, 1);
1265         inputString(s);
1266 }
1267
1268 void CGUIEditBox::inputString(const core::stringw &str)
1269 {
1270         if (!isEnabled())
1271                 return;
1272
1273         core::stringw s;
1274         u32 len = str.size();
1275
1276         if (MarkBegin != MarkEnd) {
1277                 // replace marked text
1278                 const s32 realmbgn = MarkBegin < MarkEnd ? MarkBegin : MarkEnd;
1279                 const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
1280
1281                 s = Text.subString(0, realmbgn);
1282                 s.append(str);
1283                 s.append(Text.subString(realmend, Text.size() - realmend));
1284                 Text = s;
1285                 CursorPos = realmbgn + len;
1286         } else if (OverwriteMode) {
1287                 // check to see if we are at the end of the text
1288                 if ((u32)CursorPos + len < Text.size()) {
1289                         bool isEOL = false;
1290                         s32 EOLPos;
1291                         for (u32 i = CursorPos; i < CursorPos + len && i < Max; i++) {
1292                                 if (Text[i] == L'\n' || Text[i] == L'\r') {
1293                                         isEOL = true;
1294                                         EOLPos = i;
1295                                         break;
1296                                 }
1297                         }
1298                         if (!isEOL || Text.size() + len <= Max || Max == 0) {
1299                                 s = Text.subString(0, CursorPos);
1300                                 s.append(str);
1301                                 if (isEOL) {
1302                                         // just keep appending to the current line
1303                                         // This follows the behavior of other gui libraries behaviors
1304                                         s.append(Text.subString(EOLPos, Text.size() - EOLPos));
1305                                 } else {
1306                                         // replace the next character
1307                                         s.append(Text.subString(CursorPos + len, Text.size() - CursorPos - len));
1308                                 }
1309                                 Text = s;
1310                                 CursorPos += len;
1311                         }
1312                 } else if (Text.size() + len <= Max || Max == 0) {
1313                         // add new character because we are at the end of the string
1314                         s = Text.subString(0, CursorPos);
1315                         s.append(str);
1316                         s.append(Text.subString(CursorPos + len, Text.size() - CursorPos - len));
1317                         Text = s;
1318                         CursorPos += len;
1319                 }
1320         } else if (Text.size() + len <= Max || Max == 0) {
1321                 // add new character
1322                 s = Text.subString(0, CursorPos);
1323                 s.append(str);
1324                 s.append(Text.subString(CursorPos, Text.size() - CursorPos));
1325                 Text = s;
1326                 CursorPos += len;
1327         }
1328
1329         BlinkStartTime = os::Timer::getTime();
1330         setTextMarkers(0, 0);
1331
1332         breakText();
1333         calculateScrollPos();
1334         sendGuiEvent(EGET_EDITBOX_CHANGED);
1335 }
1336
1337 // calculate autoscroll
1338 void CGUIEditBox::calculateScrollPos()
1339 {
1340         if (!AutoScroll)
1341                 return;
1342
1343         IGUIFont *font = getActiveFont();
1344         if (!font)
1345                 return;
1346
1347         s32 cursLine = getLineFromPos(CursorPos);
1348         if (cursLine < 0)
1349                 return;
1350         setTextRect(cursLine);
1351         const bool hasBrokenText = MultiLine || WordWrap;
1352
1353         // Check horizonal scrolling
1354         // NOTE: Calculations different to vertical scrolling because setTextRect interprets VAlign relative to line but HAlign not relative to row
1355         {
1356                 // get cursor position
1357                 // get cursor area
1358                 irr::u32 cursorWidth = font->getDimension(CursorChar.c_str()).Width;
1359                 core::stringw *txtLine = hasBrokenText ? &BrokenText[cursLine] : &Text;
1360                 s32 cPos = hasBrokenText ? CursorPos - BrokenTextPositions[cursLine] : CursorPos; // column
1361                 s32 cStart = font->getDimension(txtLine->subString(0, cPos).c_str()).Width;       // pixels from text-start
1362                 s32 cEnd = cStart + cursorWidth;
1363                 s32 txtWidth = font->getDimension(txtLine->c_str()).Width;
1364
1365                 if (txtWidth < FrameRect.getWidth()) {
1366                         // TODO: Needs a clean left and right gap removal depending on HAlign, similar to vertical scrolling tests for top/bottom.
1367                         // This check just fixes the case where it was most noticable (text smaller than clipping area).
1368
1369                         HScrollPos = 0;
1370                         setTextRect(cursLine);
1371                 }
1372
1373                 if (CurrentTextRect.UpperLeftCorner.X + cStart < FrameRect.UpperLeftCorner.X) {
1374                         // cursor to the left of the clipping area
1375                         HScrollPos -= FrameRect.UpperLeftCorner.X - (CurrentTextRect.UpperLeftCorner.X + cStart);
1376                         setTextRect(cursLine);
1377
1378                         // TODO: should show more characters to the left when we're scrolling left
1379                         //      and the cursor reaches the border.
1380                 } else if (CurrentTextRect.UpperLeftCorner.X + cEnd > FrameRect.LowerRightCorner.X) {
1381                         // cursor to the right of the clipping area
1382                         HScrollPos += (CurrentTextRect.UpperLeftCorner.X + cEnd) - FrameRect.LowerRightCorner.X;
1383                         setTextRect(cursLine);
1384                 }
1385         }
1386
1387         // calculate vertical scrolling
1388         if (hasBrokenText) {
1389                 irr::u32 lineHeight = font->getDimension(L"A").Height + font->getKerningHeight();
1390                 // only up to 1 line fits?
1391                 if (lineHeight >= (irr::u32)FrameRect.getHeight()) {
1392                         VScrollPos = 0;
1393                         setTextRect(cursLine);
1394                         s32 unscrolledPos = CurrentTextRect.UpperLeftCorner.Y;
1395                         s32 pivot = FrameRect.UpperLeftCorner.Y;
1396                         switch (VAlign) {
1397                         case EGUIA_CENTER:
1398                                 pivot += FrameRect.getHeight() / 2;
1399                                 unscrolledPos += lineHeight / 2;
1400                                 break;
1401                         case EGUIA_LOWERRIGHT:
1402                                 pivot += FrameRect.getHeight();
1403                                 unscrolledPos += lineHeight;
1404                                 break;
1405                         default:
1406                                 break;
1407                         }
1408                         VScrollPos = unscrolledPos - pivot;
1409                         setTextRect(cursLine);
1410                 } else {
1411                         // First 2 checks are necessary when people delete lines
1412                         setTextRect(0);
1413                         if (CurrentTextRect.UpperLeftCorner.Y > FrameRect.UpperLeftCorner.Y && VAlign != EGUIA_LOWERRIGHT) {
1414                                 // first line is leaving a gap on top
1415                                 VScrollPos = 0;
1416                         } else if (VAlign != EGUIA_UPPERLEFT) {
1417                                 u32 lastLine = BrokenTextPositions.empty() ? 0 : BrokenTextPositions.size() - 1;
1418                                 setTextRect(lastLine);
1419                                 if (CurrentTextRect.LowerRightCorner.Y < FrameRect.LowerRightCorner.Y) {
1420                                         // last line is leaving a gap on bottom
1421                                         VScrollPos -= FrameRect.LowerRightCorner.Y - CurrentTextRect.LowerRightCorner.Y;
1422                                 }
1423                         }
1424
1425                         setTextRect(cursLine);
1426                         if (CurrentTextRect.UpperLeftCorner.Y < FrameRect.UpperLeftCorner.Y) {
1427                                 // text above valid area
1428                                 VScrollPos -= FrameRect.UpperLeftCorner.Y - CurrentTextRect.UpperLeftCorner.Y;
1429                                 setTextRect(cursLine);
1430                         } else if (CurrentTextRect.LowerRightCorner.Y > FrameRect.LowerRightCorner.Y) {
1431                                 // text below valid area
1432                                 VScrollPos += CurrentTextRect.LowerRightCorner.Y - FrameRect.LowerRightCorner.Y;
1433                                 setTextRect(cursLine);
1434                         }
1435                 }
1436         }
1437 }
1438
1439 void CGUIEditBox::calculateFrameRect()
1440 {
1441         FrameRect = AbsoluteRect;
1442         IGUISkin *skin = 0;
1443         if (Environment)
1444                 skin = Environment->getSkin();
1445         if (Border && skin) {
1446                 FrameRect.UpperLeftCorner.X += skin->getSize(EGDS_TEXT_DISTANCE_X) + 1;
1447                 FrameRect.UpperLeftCorner.Y += skin->getSize(EGDS_TEXT_DISTANCE_Y) + 1;
1448                 FrameRect.LowerRightCorner.X -= skin->getSize(EGDS_TEXT_DISTANCE_X) + 1;
1449                 FrameRect.LowerRightCorner.Y -= skin->getSize(EGDS_TEXT_DISTANCE_Y) + 1;
1450         }
1451 }
1452
1453 //! set text markers
1454 void CGUIEditBox::setTextMarkers(s32 begin, s32 end)
1455 {
1456         if (begin != MarkBegin || end != MarkEnd) {
1457                 MarkBegin = begin;
1458                 MarkEnd = end;
1459
1460                 if (!PasswordBox && Operator && MarkBegin != MarkEnd) {
1461                         // copy to primary selection
1462                         const s32 realmbgn = MarkBegin < MarkEnd ? MarkBegin : MarkEnd;
1463                         const s32 realmend = MarkBegin < MarkEnd ? MarkEnd : MarkBegin;
1464
1465                         core::stringc s;
1466                         wStringToUTF8(s, Text.subString(realmbgn, realmend - realmbgn));
1467                         Operator->copyToPrimarySelection(s.c_str());
1468                 }
1469
1470                 sendGuiEvent(EGET_EDITBOX_MARKING_CHANGED);
1471         }
1472 }
1473
1474 //! send some gui event to parent
1475 void CGUIEditBox::sendGuiEvent(EGUI_EVENT_TYPE type)
1476 {
1477         if (Parent) {
1478                 SEvent e;
1479                 e.EventType = EET_GUI_EVENT;
1480                 e.GUIEvent.Caller = this;
1481                 e.GUIEvent.Element = 0;
1482                 e.GUIEvent.EventType = type;
1483
1484                 Parent->OnEvent(e);
1485         }
1486 }
1487
1488 //! Returns whether the element takes input from the IME
1489 bool CGUIEditBox::acceptsIME()
1490 {
1491         return isEnabled();
1492 }
1493
1494 } // end namespace gui
1495 } // end namespace irr