samples/richedit/wxlwindow.cpp

   1 /*-*- c++ -*-********************************************************
   2  * wxLwindow.h : a scrolled Window for displaying/entering rich text*
   3  *                                                                  *
   4  * (C) 1998-2000 by Karsten Ballüder (ballueder@gmx.net)            *
   5  *                                                                  *
   6  * $Id$
   7  *******************************************************************/
   8
   9 // ============================================================================
  10 // declarations
  11 // ============================================================================
  12
  13 // ----------------------------------------------------------------------------
  14 // headers
  15 // ----------------------------------------------------------------------------
  16
  17 #ifdef __GNUG__
  18 #   pragma implementation "wxlwindow.h"
  19 #endif
  20
  21 #include <wx/wxprec.h>
  22
  23 #ifdef __BORLANDC__
  24 #  pragma hdrstop
  25 #endif
  26
  27 #include "Mpch.h"
  28
  29 #ifdef M_BASEDIR
  30 #   ifndef USE_PCH
  31 #     include "Mcommon.h"
  32 #     include "gui/wxMenuDefs.h"
  33 #     include "gui/wxMApp.h"
  34 #   endif // USE_PCH
  35 #   include "gui/wxlwindow.h"
  36 #   include "gui/wxlparser.h"
  37
  38 #   include "MDialogs.h"
  39 #   include "strutil.h"
  40 #else
  41 #   ifdef   __WXMSW__
  42 #       include <wx/msw/private.h>
  43 #   endif
  44
  45 #   include "wxlwindow.h"
  46 #   include "wxlparser.h"
  47 #endif
  48
  49 #include <wx/clipbrd.h>
  50 #include <wx/textctrl.h>
  51 #include <wx/dataobj.h>
  52
  53 #ifdef WXLAYOUT_USE_CARET
  54 #   include <wx/caret.h>
  55 #endif // WXLAYOUT_USE_CARET
  56
  57 #include <ctype.h>
  58
  59
  60 // ----------------------------------------------------------------------------
  61 // macros
  62 // ----------------------------------------------------------------------------
  63
  64 #ifdef DEBUG
  65 #  define   WXLO_DEBUG(x)      wxLogDebug x
  66 #else
  67 #  define WXLO_DEBUG(x)
  68 #endif
  69
  70 // for profiling in debug mode:
  71 WXLO_TIMER_DEFINE(UpdateTimer);
  72 WXLO_TIMER_DEFINE(BlitTimer);
  73 WXLO_TIMER_DEFINE(LayoutTimer);
  74 WXLO_TIMER_DEFINE(TmpTimer);
  75 WXLO_TIMER_DEFINE(DrawTimer);
  76
  77 // ----------------------------------------------------------------------------
  78 // constants
  79 // ----------------------------------------------------------------------------
  80
  81 /// offsets to put a nice frame around text
  82 #define WXLO_XOFFSET   4
  83 #define WXLO_YOFFSET   4
  84
  85 /// offset to the right and bottom for when to redraw scrollbars
  86 #define   WXLO_ROFFSET   20
  87 #define   WXLO_BOFFSET   20
  88
  89 /// scroll margins when selecting with the mouse
  90 #define WXLO_SCROLLMARGIN_X   10
  91 #define WXLO_SCROLLMARGIN_Y   10
  92
  93 /// the size of one scrollbar page in pixels
  94 static const int X_SCROLL_PAGE = 10;
  95 static const int Y_SCROLL_PAGE = 20;
  96
  97
  98
  99 // ----------------------------------------------------------------------------
 100 // event tables
 101 // ----------------------------------------------------------------------------
 102
 103 BEGIN_EVENT_TABLE(wxLayoutWindow,wxScrolledWindow)
 104    EVT_SIZE    (wxLayoutWindow::OnSize)
 105
 106    EVT_PAINT    (wxLayoutWindow::OnPaint)
 107
 108    EVT_CHAR     (wxLayoutWindow::OnChar)
 109    EVT_KEY_UP   (wxLayoutWindow::OnKeyUp)
 110
 111    EVT_LEFT_DOWN(wxLayoutWindow::OnLeftMouseDown)
 112    EVT_LEFT_UP(wxLayoutWindow::OnLeftMouseUp)
 113    EVT_RIGHT_DOWN(wxLayoutWindow::OnRightMouseClick)
 114    EVT_LEFT_DCLICK(wxLayoutWindow::OnMouseDblClick)
 115    EVT_MIDDLE_DOWN(wxLayoutWindow::OnMiddleMouseDown)
 116    EVT_MOTION    (wxLayoutWindow::OnMouseMove)
 117
 118    EVT_UPDATE_UI(WXLOWIN_MENU_UNDERLINE, wxLayoutWindow::OnUpdateMenuUnderline)
 119    EVT_UPDATE_UI(WXLOWIN_MENU_BOLD, wxLayoutWindow::OnUpdateMenuBold)
 120    EVT_UPDATE_UI(WXLOWIN_MENU_ITALICS, wxLayoutWindow::OnUpdateMenuItalic)
 121    EVT_MENU_RANGE(WXLOWIN_MENU_FIRST, WXLOWIN_MENU_LAST, wxLayoutWindow::OnMenu)
 122
 123    EVT_SET_FOCUS(wxLayoutWindow::OnSetFocus)
 124    EVT_KILL_FOCUS(wxLayoutWindow::OnKillFocus)
 125
 126 //   EVT_IDLE(wxLayoutWindow::ResizeScrollbars)
 127 END_EVENT_TABLE()
 128
 129 // ----------------------------------------------------------------------------
 130 // function prototypes
 131 // ----------------------------------------------------------------------------
 132
 133 /// returns TRUE if keyCode is one of arrows/home/end/page{up|down} keys
 134 static bool IsDirectionKey(long keyCode);
 135
 136 // ============================================================================
 137 // implementation
 138 // ============================================================================
 139
 140 #ifndef wxWANTS_CHARS
 141 #   define wxWANTS_CHARS 0
 142 #endif
 143
 144 // ----------------------------------------------------------------------------
 145 // wxLayoutWindow
 146 // ----------------------------------------------------------------------------
 147
 148 wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
 149               : wxScrolledWindow(parent, -1,
 150                                  wxDefaultPosition, wxDefaultSize,
 151                                  wxHSCROLL | wxVSCROLL |
 152                                  wxBORDER |
 153                                  wxWANTS_CHARS),
 154                 m_llist(NULL)
 155 {
 156    SetStatusBar(NULL); // don't use statusbar
 157    m_Editable = false;
 158    m_doSendEvents = false;
 159    m_ViewStartX = 0; m_ViewStartY = 0;
 160    m_DoPopupMenu = true;
 161    m_PopupMenu = MakeFormatMenu();
 162    m_memDC = new wxMemoryDC;
 163    m_bitmap = new wxBitmap(4,4);
 164    m_bitmapSize = wxPoint(4,4);
 165    m_llist = new wxLayoutList();
 166    m_BGbitmap = NULL;
 167    m_ScrollToCursor = false;
 168 #ifndef __WXMSW__
 169    m_FocusFollowMode = false;
 170 #endif
 171    SetWordWrap(false);
 172    SetWrapMargin(0);
 173
 174    // no scrollbars initially
 175    m_hasHScrollbar =
 176    m_hasVScrollbar = false;
 177
 178    m_Selecting = false;
 179
 180 #ifdef WXLAYOUT_USE_CARET
 181    // FIXME cursor size shouldn't be hardcoded
 182    wxCaret *caret = new wxCaret(this, 2, 20);
 183    SetCaret(caret);
 184    m_llist->SetCaret(caret);
 185 #endif // WXLAYOUT_USE_CARET
 186
 187    m_HaveFocus = FALSE;
 188    m_HandCursor = FALSE;
 189    m_CursorVisibility = -1;
 190    SetCursor(wxCURSOR_IBEAM);
 191    SetDirty();
 192
 193    // at least under Windows, this should be the default behaviour
 194    m_AutoDeleteSelection = TRUE;
 195 }
 196
 197 wxLayoutWindow::~wxLayoutWindow()
 198 {
 199    delete m_memDC; // deletes bitmap automatically (?)
 200    delete m_bitmap;
 201    delete m_llist;
 202    delete m_PopupMenu;
 203    SetBackgroundBitmap(NULL);
 204 }
 205
 206 void
 207 wxLayoutWindow::Clear(int family,
 208                       int size,
 209                       int style,
 210                       int weight,
 211                       int underline,
 212                       wxColour *fg,
 213                       wxColour *bg)
 214 {
 215    GetLayoutList()->Clear(family,size,style,weight,underline,fg,bg);
 216    SetBackgroundColour(GetLayoutList()->GetDefaultStyleInfo().GetBGColour());
 217    wxScrolledWindow::Clear();
 218    ResizeScrollbars(true);
 219    SetDirty();
 220    SetModified(FALSE);
 221    if ( m_Editable )
 222       m_CursorVisibility = 1;
 223
 224 #ifdef WXLAYOUT_USE_CARET
 225    if ( m_CursorVisibility == 1 )
 226       GetCaret()->Show();
 227 #endif // WXLAYOUT_USE_CARET
 228
 229    RequestUpdate((wxRect *)NULL);
 230 }
 231
 232 void wxLayoutWindow::Refresh(bool eraseBackground, const wxRect *rect)
 233 {
 234    wxScrolledWindow::Refresh(eraseBackground, rect);
 235 }
 236
 237 void
 238 wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
 239 {
 240    wxClientDC dc( this );
 241    PrepareDC( dc );
 242    if ( (eventId != WXLOWIN_MENU_MOUSEMOVE
 243 #ifndef __WXMSW__
 244         || m_FocusFollowMode
 245 #endif
 246         ) && (wxWindow::FindFocus() != this)
 247       )
 248       SetFocus();
 249
 250    wxPoint findPos;
 251    findPos.x = dc.DeviceToLogicalX(event.GetX());
 252    findPos.y = dc.DeviceToLogicalY(event.GetY());
 253
 254    findPos.x -= WXLO_XOFFSET;
 255    findPos.y -= WXLO_YOFFSET;
 256
 257    if(findPos.x < 0)
 258       findPos.x = 0;
 259    if(findPos.y < 0)
 260       findPos.y = 0;
 261
 262    m_ClickPosition = wxPoint(event.GetX(), event.GetY());
 263
 264    // Scroll the window if the mouse is at the end of it:
 265    if(m_Selecting && eventId == WXLOWIN_MENU_MOUSEMOVE)
 266    {
 267       //WXLO_DEBUG(("selecting at : %d/%d", (int) event.GetX(), (int)event.GetY()));
 268       int left, top;
 269       GetViewStart(&left, &top);
 270       wxSize size = GetClientSize();
 271       int xdelta, ydelta;
 272
 273       if(event.GetX() < WXLO_SCROLLMARGIN_X)
 274          xdelta = -(WXLO_SCROLLMARGIN_X-event.GetX());
 275       else if(event.GetX() > size.x-WXLO_SCROLLMARGIN_X)
 276          xdelta = event.GetX()-size.x+WXLO_SCROLLMARGIN_X;
 277       else
 278          xdelta = 0;
 279       if(event.GetY() < WXLO_SCROLLMARGIN_Y)
 280          ydelta = -(WXLO_SCROLLMARGIN_Y-event.GetY());
 281       else if(event.GetY() > size.y-WXLO_SCROLLMARGIN_Y)
 282          ydelta = event.GetY()-size.y+WXLO_SCROLLMARGIN_Y;
 283       else
 284          ydelta = 0;
 285
 286       //WXLO_DEBUG(("xdelta: %d", (int) xdelta));
 287       if(xdelta != 0 || ydelta != 0)
 288       {
 289          top  += ydelta; if(top < 0) top = 0;
 290          left += xdelta; if(left < 0) left = 0;
 291          Scroll(left, top);
 292       }
 293    }
 294
 295    wxPoint cursorPos;
 296    bool found;
 297    wxLayoutObject *obj = m_llist->FindObjectScreen(dc, findPos,
 298                                                    &cursorPos, &found);
 299    wxLayoutObject::UserData *u = obj ? obj->GetUserData() : NULL;
 300
 301    // has the mouse only been moved?
 302    switch ( eventId )
 303    {
 304    case WXLOWIN_MENU_MOUSEMOVE:
 305    {
 306       // this variables is used to only erase the message in the status
 307       // bar if we had put it there previously - otherwise empting status
 308       // bar might be undesirable
 309       static bool s_hasPutMessageInStatusBar = false;
 310
 311       // found is only true if we are really over an object, not just
 312       // behind it
 313       if(found && u && ! m_Selecting)
 314       {
 315          if(!m_HandCursor)
 316             SetCursor(wxCURSOR_HAND);
 317          m_HandCursor = TRUE;
 318          if(m_StatusBar && m_StatusFieldLabel != -1)
 319          {
 320             const wxString &label = u->GetLabel();
 321             if(label.Length())
 322             {
 323                m_StatusBar->SetStatusText(label,
 324                                           m_StatusFieldLabel);
 325                s_hasPutMessageInStatusBar = true;
 326             }
 327          }
 328       }
 329       else
 330       {
 331          if(m_HandCursor)
 332             SetCursor(wxCURSOR_IBEAM);
 333          m_HandCursor = FALSE;
 334          if( m_StatusBar && m_StatusFieldLabel != -1 &&
 335              s_hasPutMessageInStatusBar )
 336          {
 337             m_StatusBar->SetStatusText("", m_StatusFieldLabel);
 338          }
 339       }
 340    }
 341
 342    // selecting?
 343    if ( event.LeftIsDown() )
 344    {
 345       // m_Selecting might not be set if the button got pressed
 346       // outside this window, so check for it:
 347       if( m_Selecting )
 348       {
 349          m_llist->ContinueSelection(cursorPos, m_ClickPosition);
 350          RequestUpdate();  // TODO: we don't have to redraw everything!
 351       }
 352    }
 353
 354    if ( u )
 355    {
 356       u->DecRef();
 357       u = NULL;
 358    }
 359    break;
 360
 361    case WXLOWIN_MENU_LDOWN:
 362    {
 363       // always move cursor to mouse click:
 364       m_llist->MoveCursorTo(cursorPos);
 365
 366       // clicking a mouse removes the selection
 367       if ( m_llist->HasSelection() )
 368       {
 369          m_llist->DiscardSelection();
 370          m_Selecting = false;
 371          RequestUpdate();     // TODO: we don't have to redraw everything!
 372       }
 373
 374       // Calculate where the top of the visible area is:
 375       int x0, y0;
 376       GetViewStart(&x0,&y0);
 377       int dx, dy;
 378       GetScrollPixelsPerUnit(&dx, &dy);
 379       x0 *= dx; y0 *= dy;
 380
 381       wxPoint offset(-x0+WXLO_XOFFSET, -y0+WXLO_YOFFSET);
 382
 383       if(m_CursorVisibility == -1)
 384          m_CursorVisibility = 1;
 385 #ifdef WXLAYOUT_USE_CARET
 386       if ( m_CursorVisibility == 1 )
 387          GetCaret()->Show();
 388 #endif // WXLAYOUT_USE_CARET
 389
 390       if(m_CursorVisibility)
 391       {
 392          // draw a thick cursor for editable windows with focus
 393          m_llist->DrawCursor(dc, m_HaveFocus && IsEditable(), offset);
 394       }
 395
 396 #ifdef __WXGTK__
 397       RequestUpdate(); // RequestUpdate suppresses flicker under GTK
 398 #endif // wxGTK
 399
 400       // start selection
 401       m_llist->StartSelection(wxPoint(-1, -1), m_ClickPosition);
 402       m_Selecting = true;
 403    }
 404    break;
 405
 406    case WXLOWIN_MENU_LUP:
 407       if ( m_Selecting )
 408       {
 409          // end selection at the cursor position corresponding to the
 410          // current mouse position, but don´t move cursor there.
 411          m_llist->EndSelection(cursorPos,m_ClickPosition);
 412          m_Selecting = false;
 413
 414          RequestUpdate();     // TODO: we don't have to redraw everything!
 415       }
 416       break;
 417
 418    case WXLOWIN_MENU_MDOWN:
 419       Paste(TRUE);
 420       break;
 421
 422    case WXLOWIN_MENU_DBLCLICK:
 423       // select a word under cursor
 424       m_llist->MoveCursorTo(cursorPos);
 425       m_llist->MoveCursorWord(-1);
 426       m_llist->StartSelection();
 427       m_llist->MoveCursorWord(1, false);
 428       m_llist->EndSelection();
 429       m_Selecting = false;
 430       RequestUpdate();     // TODO: we don't have to redraw everything!
 431       break;
 432    }
 433
 434    // notify about mouse events?
 435    if( m_doSendEvents )
 436    {
 437       // only do the menu if activated, editable and not on a clickable object
 438       if(eventId == WXLOWIN_MENU_RCLICK
 439          && IsEditable()
 440          && (! obj || u == NULL))
 441       {
 442          PopupMenu(m_PopupMenu, m_ClickPosition.x, m_ClickPosition.y);
 443          if(u) u->DecRef();
 444          return;
 445       }
 446
 447       // find the object at this position
 448       if(obj)
 449       {
 450          wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, eventId);
 451          commandEvent.SetEventObject( this );
 452          commandEvent.SetClientData((char *)obj);
 453          GetEventHandler()->ProcessEvent(commandEvent);
 454       }
 455    }
 456
 457    if( u ) u->DecRef();
 458 }
 459
 460 // ----------------------------------------------------------------------------
 461 // keyboard handling.
 462 // ----------------------------------------------------------------------------
 463
 464 void
 465 wxLayoutWindow::OnChar(wxKeyEvent& event)
 466 {
 467    int keyCode = event.KeyCode();
 468    bool ctrlDown = event.ControlDown();
 469
 470 #ifdef WXLAYOUT_DEBUG
 471    if(keyCode == WXK_F1)
 472    {
 473       m_llist->Debug();
 474       return;
 475    }
 476 #endif
 477
 478    // Force m_Selecting to be false if shift is no longer
 479    // pressed. OnKeyUp() cannot catch all Shift-Up events.
 480    if(m_Selecting && !event.ShiftDown())
 481    {
 482       m_Selecting = false;
 483       m_llist->EndSelection();
 484       m_llist->DiscardSelection(); //FIXME: correct?
 485    }
 486
 487    // If we deleted the selection here, we must not execute the
 488    // deletion in Delete/Backspace handling.
 489    bool deletedSelection = false;
 490    // pressing any non-arrow key optionally replaces the selection:
 491    if(m_AutoDeleteSelection
 492       && IsEditable()
 493       && !m_Selecting
 494       && m_llist->HasSelection()
 495       && ! IsDirectionKey(keyCode)
 496       && ! (event.AltDown() || ctrlDown)
 497       )
 498    {
 499       m_llist->DeleteSelection();
 500       deletedSelection = true;
 501       SetDirty();
 502    }
 503
 504    // <Shift>+<arrow> starts selection
 505    if ( IsDirectionKey(keyCode) )
 506    {
 507       // just continue the old selection
 508       if ( m_Selecting && event.ShiftDown() )
 509             m_llist->ContinueSelection();
 510       else
 511       {
 512          m_llist->DiscardSelection();
 513          m_Selecting = false;
 514          if( event.ShiftDown() )
 515          {
 516             m_Selecting = true;
 517             m_llist->StartSelection();
 518          }
 519       }
 520    }
 521
 522    // If needed, make cursor visible:
 523    if(m_CursorVisibility == -1)
 524       m_CursorVisibility = 1;
 525
 526    /* These two nested switches work like this:
 527       The first one processes all non-editing keycodes, to move the
 528       cursor, etc. It's default will process all keycodes causing
 529       modifications to the buffer, but only if editing is allowed.
 530    */
 531    switch(keyCode)
 532    {
 533    case WXK_RIGHT:
 534       if ( ctrlDown )
 535          m_llist->MoveCursorWord(1);
 536       else
 537          m_llist->MoveCursorHorizontally(1);
 538       break;
 539    case WXK_LEFT:
 540       if ( ctrlDown )
 541          m_llist->MoveCursorWord(-1);
 542       else
 543          m_llist->MoveCursorHorizontally(-1);
 544       break;
 545    case WXK_UP:
 546       m_llist->MoveCursorVertically(-1);
 547       break;
 548    case WXK_DOWN:
 549       m_llist->MoveCursorVertically(1);
 550       break;
 551    case WXK_PRIOR:
 552       m_llist->MoveCursorVertically(-Y_SCROLL_PAGE);
 553       break;
 554    case WXK_NEXT:
 555       m_llist->MoveCursorVertically(Y_SCROLL_PAGE);
 556       break;
 557    case WXK_HOME:
 558       if ( ctrlDown )
 559          m_llist->MoveCursorTo(wxPoint(0, 0));
 560       else
 561          m_llist->MoveCursorToBeginOfLine();
 562       break;
 563    case WXK_END:
 564       if ( ctrlDown )
 565          m_llist->MoveCursorToEnd();
 566       else
 567          m_llist->MoveCursorToEndOfLine();
 568       break;
 569    default:
 570
 571       if(ctrlDown && ! IsEditable())
 572          switch(keyCode)
 573          {
 574          case 'c':
 575             // this should work even in read-only mode
 576             Copy(TRUE, TRUE);
 577             break;
 578          case 's': // search
 579             Find("");
 580             break;
 581          case 't': // search again
 582             FindAgain();
 583             break;
 584          default:
 585             // we don't handle it, maybe an accelerator?
 586             event.Skip();
 587             ;
 588          }
 589       else if( IsEditable() )
 590       {
 591          /* First, handle control keys */
 592          if(ctrlDown && ! event.AltDown())
 593          {
 594             if(keyCode >= 'A' && keyCode <= 'Z')
 595                keyCode = tolower(keyCode);
 596             switch(keyCode)
 597             {
 598             case WXK_INSERT:
 599                Copy();
 600                break;
 601             case WXK_DELETE :
 602                if(! deletedSelection)
 603                {
 604                   m_llist->DeleteWord();
 605                   SetDirty();
 606                }
 607                break;
 608             case 'd':
 609                if(! deletedSelection) // already done
 610                {
 611                   m_llist->Delete(1);
 612                   SetDirty();
 613                }
 614                break;
 615             case 'y':
 616                m_llist->DeleteLines(1);
 617                SetDirty();
 618                break;
 619             case 'h': // like backspace
 620                if(m_llist->MoveCursorHorizontally(-1))
 621                {
 622                   m_llist->Delete(1);
 623                   SetDirty();
 624                }
 625                break;
 626             case 's': // search
 627                Find("");
 628                break;
 629             case 't': // search again
 630                FindAgain();
 631                break;
 632             case 'u':
 633                m_llist->DeleteToBeginOfLine();
 634                SetDirty();
 635                break;
 636             case 'k':
 637                m_llist->DeleteToEndOfLine();
 638                SetDirty();
 639                break;
 640             case 'c':
 641                Copy(TRUE, TRUE);
 642                break;
 643             case 'v':
 644                Paste( TRUE );
 645                break;
 646             case 'x':
 647                Cut();
 648                break;
 649             case 'w':
 650                if(m_WrapMargin > 0)
 651                   m_llist->WrapLine(m_WrapMargin);
 652                break;
 653             case 'q':
 654                if(m_WrapMargin > 0)
 655                   m_llist->WrapAll(m_WrapMargin);
 656                break;
 657 #ifdef WXLAYOUT_DEBUG
 658             case WXK_F1:
 659                m_llist->SetFont(-1,-1,-1,-1,true);  // underlined
 660                break;
 661             case 'l':
 662                Refresh(TRUE);
 663                break;
 664 #endif
 665             default:
 666             // we don't handle it, maybe an accelerator?
 667             event.Skip();
 668             }
 669          }
 670          // ALT only:
 671          else if( event.AltDown() && ! event.ControlDown() )
 672          {
 673             switch(keyCode)
 674             {
 675             case WXK_DELETE:
 676             case 'd':
 677                m_llist->DeleteWord();
 678                SetDirty();
 679                break;
 680             default:
 681                // we don't handle it, maybe an accelerator?
 682                event.Skip();
 683             }
 684          }
 685          // no control keys:
 686          else if ( ! event.AltDown() && ! event.ControlDown())
 687          {
 688             switch(keyCode)
 689             {
 690             case WXK_INSERT:
 691                if(event.ShiftDown())
 692                   Paste();
 693                break;
 694             case WXK_DELETE :
 695                if(event.ShiftDown())
 696                   Cut();
 697                else
 698                   if(! deletedSelection)
 699                   {
 700                      m_llist->Delete(1);
 701                      SetDirty();
 702                   }
 703                break;
 704             case WXK_BACK: // backspace
 705                if(! deletedSelection)
 706                   if(m_llist->MoveCursorHorizontally(-1))
 707                   {
 708                      m_llist->Delete(1);
 709                      SetDirty();
 710                   }
 711                break;
 712             case WXK_RETURN:
 713                if(m_DoWordWrap &&
 714                   m_WrapMargin > 0
 715                   && m_llist->GetCursorPos().x > m_WrapMargin)
 716                   m_llist->WrapLine(m_WrapMargin);
 717                m_llist->LineBreak();
 718                SetDirty();
 719                break;
 720
 721             case WXK_TAB:
 722                if ( !event.ShiftDown() )
 723                {
 724                   // TODO should be configurable
 725                   static const int tabSize = 8;
 726
 727                   CoordType x = m_llist->GetCursorPos().x;
 728                   size_t numSpaces = tabSize - x % tabSize;
 729                   m_llist->Insert(wxString(' ', numSpaces));
 730                   SetDirty();
 731                }
 732                break;
 733
 734             default:
 735                if((!(event.ControlDown() || event.AltDown()
 736                   ))
 737                   && (keyCode < 256 && keyCode >= 32)
 738                   )
 739                {
 740                   if(m_DoWordWrap
 741                      && m_WrapMargin > 0
 742                      && m_llist->GetCursorPos().x > m_WrapMargin
 743                      && isspace(keyCode))
 744                      m_llist->WrapLine(m_WrapMargin);
 745                   m_llist->Insert((char)keyCode);
 746                   SetDirty();
 747                }
 748                else
 749                   // we don't handle it, maybe an accelerator?
 750                   event.Skip();
 751                break;
 752             }
 753          }
 754       }// if(IsEditable())
 755       else
 756          // we don't handle it, maybe an accelerator?
 757          event.Skip();
 758    }// first switch()
 759
 760    if ( m_Selecting )
 761    {
 762       // continue selection to the current (new) cursor position
 763       m_llist->ContinueSelection();
 764    }
 765    ScrollToCursor();
 766    // refresh the screen
 767    RequestUpdate(m_llist->GetUpdateRect());
 768 }
 769
 770 void
 771 wxLayoutWindow::OnKeyUp(wxKeyEvent& event)
 772 {
 773    if ( event.KeyCode() == WXK_SHIFT && m_Selecting )
 774    {
 775       m_llist->EndSelection();
 776       m_Selecting = false;
 777    }
 778
 779    event.Skip();
 780 }
 781
 782
 783 void
 784 wxLayoutWindow::ScrollToCursor(void)
 785 {
 786    //is always needed to make sure we know where the cursor is
 787    //if(IsDirty())
 788    //RequestUpdate(m_llist->GetUpdateRect());
 789
 790
 791    ResizeScrollbars();
 792
 793    int x0,y0,x1,y1, dx, dy;
 794
 795    // Calculate where the top of the visible area is:
 796    GetViewStart(&x0,&y0);
 797    GetScrollPixelsPerUnit(&dx, &dy);
 798    x0 *= dx; y0 *= dy;
 799
 800    WXLO_DEBUG(("ScrollToCursor: GetViewStart is %d/%d", x0, y0));
 801
 802    // Get the size of the visible window:
 803    GetClientSize(&x1, &y1);
 804
 805    // Make sure that the scrollbars are at a position so that the cursor is
 806    // visible if we are editing
 807    WXLO_DEBUG(("m_ScrollToCursor = %d", (int) m_ScrollToCursor));
 808    wxPoint cc = m_llist->GetCursorScreenPos();
 809
 810    // the cursor should be completely visible in both directions
 811    wxPoint cs(m_llist->GetCursorSize());
 812    int nx = -1,
 813        ny = -1;
 814    if ( cc.x < x0 || cc.x >= x0 + x1 - cs.x )
 815    {
 816       nx = cc.x - x1/2;
 817       if ( nx < 0 )
 818          nx = 0;
 819    }
 820
 821    if ( cc.y < y0 || cc.y >= y0 + y1 - cs.y )
 822    {
 823       ny = cc.y - y1/2;
 824       if ( ny < 0)
 825          ny = 0;
 826    }
 827
 828    if( nx != -1 || ny != -1 )
 829    {
 830       // set new view start
 831       Scroll(nx == -1 ? -1 : (nx+dx-1)/dx, ny == -1 ? -1 : (ny+dy-1)/dy);
 832       // avoid recursion
 833       m_ScrollToCursor = false;
 834       RequestUpdate();
 835    }
 836 }
 837
 838 void
 839 wxLayoutWindow::OnPaint( wxPaintEvent &WXUNUSED(event))
 840 {
 841    wxRect region = GetUpdateRegion().GetBox();
 842    InternalPaint(&region);
 843 }
 844
 845 void
 846 wxLayoutWindow::RequestUpdate(const wxRect *updateRect)
 847 {
 848 #ifdef __WXGTK__
 849    // Calling Refresh() causes bad flicker under wxGTK!!!
 850    InternalPaint(updateRect);
 851 #else
 852    // shouldn't specify the update rectangle if it doesn't include all the
 853    // changed locations - otherwise, they won't be repainted at all because
 854    // the system clips the display to the update rect
 855    Refresh(FALSE); //, updateRect);
 856 #endif
 857 }
 858
 859 void
 860 wxLayoutWindow::InternalPaint(const wxRect *updateRect)
 861 {
 862
 863    wxPaintDC dc( this );
 864    PrepareDC( dc );
 865
 866 #ifdef WXLAYOUT_USE_CARET
 867    // hide the caret before drawing anything
 868    GetCaret()->Hide();
 869 #endif // WXLAYOUT_USE_CARET
 870
 871    int x0,y0,x1,y1, dx, dy;
 872
 873    // Calculate where the top of the visible area is:
 874    GetViewStart(&x0,&y0);
 875    GetScrollPixelsPerUnit(&dx, &dy);
 876    x0 *= dx; y0 *= dy;
 877
 878    // Get the size of the visible window:
 879    GetClientSize(&x1,&y1);
 880    wxASSERT(x1 >= 0);
 881    wxASSERT(y1 >= 0);
 882
 883    if(updateRect)
 884    {
 885       WXLO_DEBUG(("Update rect: %ld,%ld / %ld,%ld",
 886                   updateRect->x, updateRect->y,
 887                   updateRect->x+updateRect->width,
 888                   updateRect->y+updateRect->height));
 889    }
 890
 891    ResizeScrollbars(true);
 892
 893    WXLO_TIMER_START(TmpTimer);
 894    /* Check whether the window has grown, if so, we need to reallocate
 895       the bitmap to be larger. */
 896    if(x1 > m_bitmapSize.x || y1 > m_bitmapSize.y)
 897    {
 898       wxASSERT(m_bitmapSize.x > 0);
 899       wxASSERT(m_bitmapSize.y > 0);
 900
 901       m_memDC->SelectObject(wxNullBitmap);
 902       delete m_bitmap;
 903       m_bitmapSize = wxPoint(x1,y1);
 904       m_bitmap = new wxBitmap(x1,y1);
 905       m_memDC->SelectObject(*m_bitmap);
 906    }
 907
 908    m_memDC->SetDeviceOrigin(0,0);
 909    m_memDC->SetBackground(wxBrush(m_llist->GetDefaultStyleInfo().GetBGColour(),wxSOLID));
 910    m_memDC->SetPen(wxPen(m_llist->GetDefaultStyleInfo().GetBGColour(),
 911                          0,wxTRANSPARENT));
 912    m_memDC->SetLogicalFunction(wxCOPY);
 913    m_memDC->Clear();
 914    WXLO_TIMER_STOP(TmpTimer);
 915
 916    // fill the background with the background bitmap
 917    if(m_BGbitmap)
 918    {
 919       CoordType
 920          y, x,
 921          w = m_BGbitmap->GetWidth(),
 922          h = m_BGbitmap->GetHeight();
 923       for(y = 0; y < y1; y+=h)
 924          for(x = 0; x < x1; x+=w)
 925             m_memDC->DrawBitmap(*m_BGbitmap, x, y);
 926       m_memDC->SetBackgroundMode(wxTRANSPARENT);
 927    }
 928
 929    // This is the important bit: we tell the list to draw itself
 930 #if WXLO_DEBUG_URECT
 931    if(updateRect)
 932    {
 933       WXLO_DEBUG(("Update rect: %ld,%ld / %ld,%ld",
 934                   updateRect->x, updateRect->y,
 935                   updateRect->x+updateRect->width,
 936                   updateRect->y+updateRect->height));
 937    }
 938 #endif
 939
 940    // Device origins on the memDC are suspect, we translate manually
 941    // with the translate parameter of Draw().
 942    wxPoint offset(-x0+WXLO_XOFFSET,-y0+WXLO_YOFFSET);
 943    m_llist->Draw(*m_memDC,offset, y0, y0+y1);
 944
 945    // We start calculating a new update rect before drawing the
 946    // cursor, so that the cursor coordinates get included in the next
 947    // update rectangle (although they are drawn on the memDC, this is
 948    // needed to erase it):
 949    m_llist->InvalidateUpdateRect();
 950    if(m_CursorVisibility == 1)
 951    {
 952       // draw a thick cursor for editable windows with focus
 953       m_llist->DrawCursor(*m_memDC,
 954                           m_HaveFocus && IsEditable(),
 955                           offset);
 956    }
 957
 958    WXLO_TIMER_START(BlitTimer);
 959 // Now copy everything to the screen:
 960 #if 0
 961    // This somehow doesn't work, but even the following bit with the
 962    // whole rect at once is still a bit broken I think.
 963    wxRegionIterator ri ( GetUpdateRegion() );
 964    if(ri)
 965       while(ri)
 966       {
 967          WXLO_DEBUG(("UpdateRegion: %ld,%ld, %ld,%ld",
 968                      ri.GetX(),ri.GetY(),ri.GetW(),ri.GetH()));
 969          dc.Blit(x0+ri.GetX(),y0+ri.GetY(),ri.GetW(),ri.GetH(),
 970                  m_memDC,ri.GetX(),ri.GetY(),wxCOPY,FALSE);
 971          ri++;
 972       }
 973    else
 974 #endif
 975    {
 976       // FIXME: Trying to copy only the changed parts, but it does not seem
 977       // to work:
 978 //      x0 = updateRect->x; y0 = updateRect->y;
 979 //      if(updateRect->height < y1)
 980 //         y1 = updateRect->height;
 981 //      y1 += WXLO_YOFFSET; //FIXME might not be needed
 982       dc.Blit(x0,y0,x1,y1,m_memDC,0,0,wxCOPY,FALSE);
 983    }
 984    WXLO_TIMER_STOP(BlitTimer);
 985
 986
 987 #ifdef WXLAYOUT_USE_CARET
 988    // show the caret back after everything is redrawn
 989    GetCaret()->Show();
 990 #endif // WXLAYOUT_USE_CARET
 991
 992    ResetDirty();
 993
 994    if ( m_StatusBar && m_StatusFieldCursor != -1 )
 995    {
 996       static wxPoint s_oldCursorPos(-1, -1);
 997
 998       wxPoint pos(m_llist->GetCursorPos());
 999
1000       // avoid unnecessary status bar refreshes
1001       if ( pos != s_oldCursorPos )
1002       {
1003          s_oldCursorPos = pos;
1004
1005          wxString label;
1006          label.Printf(_("Ln:%d Col:%d"), pos.y + 1, pos.x + 1);
1007          m_StatusBar->SetStatusText(label, m_StatusFieldCursor);
1008       }
1009    }
1010
1011    WXLO_TIMER_PRINT(LayoutTimer);
1012    WXLO_TIMER_PRINT(BlitTimer);
1013    WXLO_TIMER_PRINT(TmpTimer);
1014 }
1015
1016 void
1017 wxLayoutWindow::OnSize(wxSizeEvent &event)
1018 {
1019    if ( m_llist )
1020       ResizeScrollbars();
1021
1022    event.Skip();
1023 }
1024
1025 /*
1026 Change the range and position of scrollbars. Has evolved into a
1027 generic Update function which will at some time later cause a repaint
1028 as needed.
1029 */
1030
1031 void
1032 wxLayoutWindow::ResizeScrollbars(bool exact)
1033 {
1034    wxClientDC dc( this );
1035    PrepareDC( dc );
1036 //   m_llist->ForceTotalLayout();
1037
1038    if(! IsDirty())
1039    {
1040       // we are laying out just the minimum, but always up to the
1041       // cursor line, so the cursor position is updated.
1042       m_llist->Layout(dc, 0);
1043       return;
1044    }
1045    WXLO_TIMER_START(LayoutTimer);
1046    m_llist->Layout(dc, -1);
1047    WXLO_TIMER_STOP(LayoutTimer);
1048    ResetDirty();
1049
1050    wxPoint max = m_llist->GetSize();
1051    wxSize size = GetClientSize();
1052
1053    WXLO_DEBUG(("ResizeScrollbars: max size = (%ld, %ld)",
1054                (long int)max.x, (long int) max.y));
1055
1056    // in the absence of scrollbars we should compare with the client size
1057    if ( !m_hasHScrollbar )
1058       m_maxx = size.x;// - WXLO_ROFFSET;
1059    if ( !m_hasVScrollbar )
1060       m_maxy = size.y;// - WXLO_BOFFSET;
1061
1062    // check if the text hasn't become too big
1063    // TODO why do we set both at once? they're independent...
1064    if( max.x > m_maxx - WXLO_ROFFSET
1065        || max.y > m_maxy - WXLO_BOFFSET
1066        || (max.x < m_maxx - X_SCROLL_PAGE)
1067        || (max.y < m_maxy - Y_SCROLL_PAGE)
1068        || exact )
1069    {
1070       // text became too large
1071       if ( !exact )
1072       {
1073          // add an extra bit to the sizes to avoid future updates
1074          max.x += WXLO_ROFFSET;
1075          max.y += WXLO_BOFFSET;
1076       }
1077
1078       bool done = FALSE;
1079       if(max.x < X_SCROLL_PAGE && m_hasHScrollbar)
1080       {
1081          SetScrollbars(0,-1,0,-1,0,-1,true);
1082          m_hasHScrollbar = FALSE;
1083          done = TRUE;
1084       }
1085       if(max.y < Y_SCROLL_PAGE && m_hasVScrollbar)
1086       {
1087          SetScrollbars(-1,0,-1,0,-1,0,true);
1088          m_hasVScrollbar = FALSE;
1089          done = TRUE;
1090       }
1091       if(! done &&
1092 //         (max.x > X_SCROLL_PAGE || max.y > Y_SCROLL_PAGE)
1093          (max.x > size.x - X_SCROLL_PAGE|| max.y > size.y - Y_SCROLL_PAGE)
1094          )
1095       {
1096          GetViewStart(&m_ViewStartX, &m_ViewStartY);
1097          SetScrollbars(X_SCROLL_PAGE,
1098                        Y_SCROLL_PAGE,
1099                        max.x / X_SCROLL_PAGE + 2,
1100                        max.y / Y_SCROLL_PAGE + 2,
1101                        m_ViewStartX,
1102                        m_ViewStartY,
1103                        true);
1104          m_hasHScrollbar =
1105             m_hasVScrollbar = true;
1106 //         ScrollToCursor();
1107       }
1108
1109       m_maxx = max.x + X_SCROLL_PAGE;
1110       m_maxy = max.y + Y_SCROLL_PAGE;
1111    }
1112 }
1113
1114 // ----------------------------------------------------------------------------
1115 //
1116 // clipboard operations
1117 //
1118 // ----------------------------------------------------------------------------
1119
1120 void
1121 wxLayoutWindow::Paste(bool usePrivate, bool primary)
1122 {
1123    // this only has an effect under X11:
1124    wxTheClipboard->UsePrimarySelection(primary);
1125    // Read some text
1126    if (wxTheClipboard->Open())
1127    {
1128       if(usePrivate)
1129       {
1130          wxLayoutDataObject wxldo;
1131          if (wxTheClipboard->IsSupported( wxldo.GetFormat() ))
1132          {
1133             if(wxTheClipboard->GetData(wxldo))
1134             {
1135                wxTheClipboard->Close();
1136                wxString str = wxldo.GetLayoutData();
1137                m_llist->Read(str);
1138                SetDirty();
1139                RequestUpdate();
1140                return;
1141             }
1142          }
1143       }
1144       wxTextDataObject data;
1145       if (wxTheClipboard->IsSupported( data.GetFormat() )
1146           && wxTheClipboard->GetData(data) )
1147       {
1148          wxTheClipboard->Close();
1149          wxString text = data.GetText();
1150          wxLayoutImportText( m_llist, text);
1151          SetDirty();
1152          RequestUpdate();
1153          return;
1154       }
1155    }
1156    // if everything failed we can still try the primary:
1157    wxTheClipboard->Close();
1158    if(! primary) // not tried before
1159    {
1160       wxTheClipboard->UsePrimarySelection();
1161       if (wxTheClipboard->Open())
1162       {
1163          wxTextDataObject data;
1164          if (wxTheClipboard->IsSupported( data.GetFormat() )
1165              && wxTheClipboard->GetData(data) )
1166          {
1167             wxString text = data.GetText();
1168             wxLayoutImportText( m_llist, text);
1169             SetDirty();
1170             RequestUpdate();
1171          }
1172          wxTheClipboard->Close();
1173       }
1174    }
1175 }
1176
1177 bool
1178 wxLayoutWindow::Copy(bool invalidate, bool privateFormat, bool primary)
1179 {
1180    // Calling GetSelection() will automatically do an EndSelection()
1181    // on the list, but we need to take a note of it, too:
1182    if(m_Selecting)
1183    {
1184       m_Selecting = false;
1185       m_llist->EndSelection();
1186    }
1187
1188    wxLayoutDataObject *wldo = new wxLayoutDataObject;
1189    wxLayoutList *llist = m_llist->GetSelection(wldo, invalidate);
1190    if(! llist)
1191       return FALSE;
1192    // Export selection as text:
1193    wxString text;
1194    wxLayoutExportObject *exp;
1195    wxLayoutExportStatus status(llist);
1196    while((exp = wxLayoutExport( &status, WXLO_EXPORT_AS_TEXT)) != NULL)
1197    {
1198       if(exp->type == WXLO_EXPORT_TEXT)
1199          text << *(exp->content.text);
1200       delete exp;
1201    }
1202    delete llist;
1203
1204    // The exporter always appends a newline, so we chop it off if it
1205    // is there:
1206    {
1207       size_t len = text.Length();
1208       if(len > 2 && text[len-2] ==  '\r') // Windows
1209          text = text.Mid(0,len-2);
1210       else if(len > 1 && text[len-1] == '\n')
1211          text = text.Mid(0,len-1);
1212    }
1213
1214 #if 0
1215 if(! primary) // always copy as text-only to primary selection
1216    {
1217       wxTheClipboard->UsePrimarySelection();
1218       if (wxTheClipboard->Open())
1219       {
1220          wxTextDataObject *data = new wxTextDataObject( text );
1221          wxTheClipboard->SetData( data );
1222          wxTheClipboard->Close();
1223       }
1224    }
1225 #endif
1226
1227    wxTheClipboard->UsePrimarySelection(primary);
1228    if (wxTheClipboard->Open())
1229    {
1230       wxTextDataObject *data = new wxTextDataObject( text );
1231       bool rc;
1232
1233          rc = wxTheClipboard->SetData( data );
1234       if(privateFormat)
1235          rc |= wxTheClipboard->SetData( wldo );
1236       wxTheClipboard->Close();
1237       return rc;
1238    }
1239    else
1240       delete wldo;
1241
1242    return FALSE;
1243 }
1244
1245 bool
1246 wxLayoutWindow::Cut(bool privateFormat, bool usePrimary)
1247 {
1248    if(Copy(false, privateFormat, usePrimary)) // do not invalidate selection after copy
1249    {
1250       m_llist->DeleteSelection();
1251       SetDirty();
1252       return TRUE;
1253    }
1254    else
1255       return FALSE;
1256 }
1257
1258 // ----------------------------------------------------------------------------
1259 // searching
1260 // ----------------------------------------------------------------------------
1261
1262 bool
1263 wxLayoutWindow::Find(const wxString &needle,
1264                      wxPoint * fromWhere,
1265                      const wxString &configPath)
1266 {
1267 #ifdef M_BASEDIR
1268    wxPoint found;
1269
1270    if(needle.Length() == 0)
1271    {
1272       if( ! MInputBox(&m_FindString,
1273                       _("Find text"),
1274                       _("   Find:"),
1275                       this,
1276                       configPath, "")
1277           || strutil_isempty(m_FindString))
1278          return true;
1279    }
1280    else
1281       m_FindString = needle;
1282
1283    if(fromWhere == NULL)
1284       found = m_llist->FindText(m_FindString, m_llist->GetCursorPos());
1285    else
1286       found = m_llist->FindText(m_FindString, *fromWhere);
1287    if(found.x != -1)
1288    {
1289       if(fromWhere)
1290       {
1291          *fromWhere = found;
1292          fromWhere->x ++;
1293       }
1294       m_llist->MoveCursorTo(found);
1295       ScrollToCursor();
1296       RequestUpdate();
1297       return true;
1298    }
1299 #endif
1300    return false;
1301 }
1302
1303
1304 bool
1305 wxLayoutWindow::FindAgain(void)
1306 {
1307    bool rc = Find(m_FindString);
1308    return rc;
1309 }
1310
1311 // ----------------------------------------------------------------------------
1312 // popup menu stuff
1313 // ----------------------------------------------------------------------------
1314
1315 wxMenu *
1316 wxLayoutWindow::MakeFormatMenu()
1317 {
1318    wxMenu *m = new wxMenu(_("Layout Menu"));
1319
1320    m->Append(WXLOWIN_MENU_LARGER   ,_("&Larger"),_("Switch to larger font."), false);
1321    m->Append(WXLOWIN_MENU_SMALLER  ,_("&Smaller"),_("Switch to smaller font."), false);
1322    m->AppendSeparator();
1323    m->Append(WXLOWIN_MENU_UNDERLINE, _("&Underline"),_("Underline mode."), true);
1324    m->Append(WXLOWIN_MENU_BOLD, _("&Bold"),_("Bold mode."), true);
1325    m->Append(WXLOWIN_MENU_ITALICS, _("&Italics"),_("Italics mode."), true);
1326    m->AppendSeparator();
1327    m->Append(WXLOWIN_MENU_ROMAN     ,_("&Roman"),_("Switch to roman font."), false);
1328    m->Append(WXLOWIN_MENU_TYPEWRITER,_("&Typewriter"),_("Switch to typewriter font."), false);
1329    m->Append(WXLOWIN_MENU_SANSSERIF ,_("&Sans Serif"),_("Switch to sans serif font."), false);
1330
1331    return m;
1332 }
1333
1334 void wxLayoutWindow::OnUpdateMenuUnderline(wxUpdateUIEvent& event)
1335 {
1336    event.Check(m_llist->IsFontUnderlined());
1337 }
1338
1339 void wxLayoutWindow::OnUpdateMenuBold(wxUpdateUIEvent& event)
1340 {
1341    event.Check(m_llist->IsFontBold());
1342 }
1343
1344 void wxLayoutWindow::OnUpdateMenuItalic(wxUpdateUIEvent& event)
1345 {
1346    event.Check(m_llist->IsFontItalic());
1347 }
1348
1349 void wxLayoutWindow::OnMenu(wxCommandEvent& event)
1350 {
1351    switch (event.GetId())
1352    {
1353    case WXLOWIN_MENU_LARGER:
1354       m_llist->SetFontLarger(); RequestUpdate(); break;
1355    case WXLOWIN_MENU_SMALLER:
1356       m_llist->SetFontSmaller(); RequestUpdate(); break;
1357    case WXLOWIN_MENU_UNDERLINE:
1358       m_llist->ToggleFontUnderline(); RequestUpdate(); break;
1359    case WXLOWIN_MENU_BOLD:
1360       m_llist->ToggleFontWeight(); RequestUpdate(); break;
1361    case WXLOWIN_MENU_ITALICS:
1362       m_llist->ToggleFontItalics(); RequestUpdate(); break;
1363    case WXLOWIN_MENU_ROMAN:
1364       m_llist->SetFontFamily(wxROMAN); RequestUpdate(); break;
1365    case WXLOWIN_MENU_TYPEWRITER:
1366       m_llist->SetFontFamily(wxFIXED); RequestUpdate(); break;
1367    case WXLOWIN_MENU_SANSSERIF:
1368       m_llist->SetFontFamily(wxSWISS); RequestUpdate(); break;
1369    }
1370 }
1371
1372 // ----------------------------------------------------------------------------
1373 // focus
1374 // ----------------------------------------------------------------------------
1375
1376 void
1377 wxLayoutWindow::OnSetFocus(wxFocusEvent &ev)
1378 {
1379    m_HaveFocus = true;
1380    ev.Skip();
1381    RequestUpdate(); // cursor must change
1382 }
1383
1384 void
1385 wxLayoutWindow::OnKillFocus(wxFocusEvent &ev)
1386 {
1387    m_HaveFocus = false;
1388    ev.Skip();
1389    RequestUpdate();// cursor must change
1390 }
1391
1392 // ----------------------------------------------------------------------------
1393 // private functions
1394 // ----------------------------------------------------------------------------
1395
1396 static bool IsDirectionKey(long keyCode)
1397 {
1398    switch(keyCode)
1399    {
1400       case WXK_UP:
1401       case WXK_DOWN:
1402       case WXK_RIGHT:
1403       case WXK_LEFT:
1404       case WXK_PRIOR:
1405       case WXK_NEXT:
1406       case WXK_HOME:
1407       case WXK_END:
1408          return true;
1409
1410       default:
1411          return false;
1412    }
1413 }