samples/richedit/wxlwindow.cpp

   1 /*-*- c++ -*-********************************************************
   2  * wxLwindow.h : a scrolled Window for displaying/entering rich text*
   3  *                                                                  *
   4  * (C) 1998, 1999 by Karsten Ballüder (karsten@phy.hw.ac.uk)        *
   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 // macros
  61 // ----------------------------------------------------------------------------
  62
  63 #ifdef DEBUG
  64 #  define   WXLO_DEBUG(x)      wxLogDebug x
  65 #else
  66 #  define WXLO_DEBUG(x)
  67 #endif
  68
  69 // ----------------------------------------------------------------------------
  70 // constants
  71 // ----------------------------------------------------------------------------
  72
  73 /// offsets to put a nice frame around text
  74 #define WXLO_XOFFSET   4
  75 #define WXLO_YOFFSET   4
  76
  77 /// offset to the right and bottom for when to redraw scrollbars
  78 #define   WXLO_ROFFSET   20
  79 #define   WXLO_BOFFSET   20
  80
  81 /// scroll margins when selecting with the mouse
  82 #define WXLO_SCROLLMARGIN_X   10
  83 #define WXLO_SCROLLMARGIN_Y   10
  84
  85 /// the size of one scrollbar page in pixels
  86 static const int X_SCROLL_PAGE = 10;
  87 static const int Y_SCROLL_PAGE = 20;
  88
  89
  90
  91 #define wxUSE_PRIVATE_CLIPBOARD_FORMAT 0
  92
  93 // ----------------------------------------------------------------------------
  94 // event tables
  95 // ----------------------------------------------------------------------------
  96
  97 BEGIN_EVENT_TABLE(wxLayoutWindow,wxScrolledWindow)
  98    EVT_SIZE    (wxLayoutWindow::OnSize)
  99
 100    EVT_PAINT    (wxLayoutWindow::OnPaint)
 101
 102    EVT_CHAR     (wxLayoutWindow::OnChar)
 103    EVT_KEY_UP   (wxLayoutWindow::OnKeyUp)
 104
 105    EVT_LEFT_DOWN(wxLayoutWindow::OnLeftMouseDown)
 106    EVT_LEFT_UP(wxLayoutWindow::OnLeftMouseUp)
 107    EVT_RIGHT_DOWN(wxLayoutWindow::OnRightMouseClick)
 108    EVT_LEFT_DCLICK(wxLayoutWindow::OnMouseDblClick)
 109    EVT_MIDDLE_DOWN(wxLayoutWindow::OnMiddleMouseDown)
 110    EVT_MOTION    (wxLayoutWindow::OnMouseMove)
 111
 112    EVT_UPDATE_UI(WXLOWIN_MENU_UNDERLINE, wxLayoutWindow::OnUpdateMenuUnderline)
 113    EVT_UPDATE_UI(WXLOWIN_MENU_BOLD, wxLayoutWindow::OnUpdateMenuBold)
 114    EVT_UPDATE_UI(WXLOWIN_MENU_ITALICS, wxLayoutWindow::OnUpdateMenuItalic)
 115    EVT_MENU_RANGE(WXLOWIN_MENU_FIRST, WXLOWIN_MENU_LAST, wxLayoutWindow::OnMenu)
 116
 117    EVT_SET_FOCUS(wxLayoutWindow::OnSetFocus)
 118    EVT_KILL_FOCUS(wxLayoutWindow::OnKillFocus)
 119
 120 //   EVT_IDLE(wxLayoutWindow::ResizeScrollbars)
 121 END_EVENT_TABLE()
 122
 123 // ----------------------------------------------------------------------------
 124 // function prototypes
 125 // ----------------------------------------------------------------------------
 126
 127 /// returns TRUE if keyCode is one of arrows/home/end/page{up|down} keys
 128 static bool IsDirectionKey(long keyCode);
 129
 130 // ============================================================================
 131 // implementation
 132 // ============================================================================
 133
 134 #ifndef wxWANTS_CHARS
 135 #   define wxWANTS_CHARS 0
 136 #endif
 137
 138 // ----------------------------------------------------------------------------
 139 // wxLayoutWindow
 140 // ----------------------------------------------------------------------------
 141
 142 wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
 143               : wxScrolledWindow(parent, -1,
 144                                  wxDefaultPosition, wxDefaultSize,
 145                                  wxHSCROLL | wxVSCROLL |
 146                                  wxBORDER |
 147                                  wxWANTS_CHARS),
 148                 m_llist(NULL)
 149 {
 150    SetStatusBar(NULL); // don't use statusbar
 151    m_Editable = false;
 152    m_doSendEvents = false;
 153    m_ViewStartX = 0; m_ViewStartY = 0;
 154    m_DoPopupMenu = true;
 155    m_PopupMenu = MakeFormatMenu();
 156    m_memDC = new wxMemoryDC;
 157    m_bitmap = new wxBitmap(4,4);
 158    m_bitmapSize = wxPoint(4,4);
 159    m_llist = new wxLayoutList();
 160    m_BGbitmap = NULL;
 161    m_ScrollToCursor = false;
 162 #ifndef __WXMSW__
 163    m_FocusFollowMode = false;
 164 #endif
 165    SetWrapMargin(0);
 166
 167    // no scrollbars initially
 168    m_hasHScrollbar =
 169    m_hasVScrollbar = false;
 170
 171    m_Selecting = false;
 172
 173 #ifdef WXLAYOUT_USE_CARET
 174    // FIXME cursor size shouldn't be hardcoded
 175    wxCaret *caret = new wxCaret(this, 2, 20);
 176    SetCaret(caret);
 177    m_llist->SetCaret(caret);
 178 #endif // WXLAYOUT_USE_CARET
 179
 180    m_HaveFocus = FALSE;
 181    m_HandCursor = FALSE;
 182    m_CursorVisibility = -1;
 183    SetCursor(wxCURSOR_IBEAM);
 184    SetDirty();
 185
 186    // at least under Windows, this should be the default behaviour
 187    m_AutoDeleteSelection = TRUE;
 188 }
 189
 190 wxLayoutWindow::~wxLayoutWindow()
 191 {
 192    delete m_memDC; // deletes bitmap automatically (?)
 193    delete m_bitmap;
 194    delete m_llist;
 195    delete m_PopupMenu;
 196    SetBackgroundBitmap(NULL);
 197 }
 198
 199 void
 200 wxLayoutWindow::Clear(int family,
 201                       int size,
 202                       int style,
 203                       int weight,
 204                       int underline,
 205                       wxColour *fg,
 206                       wxColour *bg)
 207 {
 208    GetLayoutList()->Clear(family,size,style,weight,underline,fg,bg);
 209    SetBackgroundColour(GetLayoutList()->GetDefaultStyleInfo().GetBGColour());
 210    wxScrolledWindow::Clear();
 211    ResizeScrollbars(true);
 212    SetDirty();
 213    SetModified(FALSE);
 214    if ( m_Editable )
 215       m_CursorVisibility = 1;
 216
 217 #ifdef WXLAYOUT_USE_CARET
 218    if ( m_CursorVisibility == 1 )
 219       GetCaret()->Show();
 220 #endif // WXLAYOUT_USE_CARET
 221
 222    RequestUpdate((wxRect *)NULL);
 223 }
 224
 225 void wxLayoutWindow::Refresh(bool eraseBackground, const wxRect *rect)
 226 {
 227    wxScrolledWindow::Refresh(eraseBackground, rect);
 228 }
 229
 230 void
 231 wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
 232 {
 233    wxClientDC dc( this );
 234    PrepareDC( dc );
 235    if ( eventId != WXLOWIN_MENU_MOUSEMOVE
 236 #ifndef __WXMSW__
 237         || m_FocusFollowMode
 238 #endif
 239       )
 240       SetFocus();
 241
 242    wxPoint findPos;
 243    findPos.x = dc.DeviceToLogicalX(event.GetX());
 244    findPos.y = dc.DeviceToLogicalY(event.GetY());
 245
 246    findPos.x -= WXLO_XOFFSET;
 247    findPos.y -= WXLO_YOFFSET;
 248
 249    if(findPos.x < 0)
 250       findPos.x = 0;
 251    if(findPos.y < 0)
 252       findPos.y = 0;
 253
 254    m_ClickPosition = wxPoint(event.GetX(), event.GetY());
 255
 256    // Scroll the window if the mouse is at the end of it:
 257    if(m_Selecting && eventId == WXLOWIN_MENU_MOUSEMOVE)
 258    {
 259       //WXLO_DEBUG(("selecting at : %d/%d", (int) event.GetX(), (int)event.GetY()));
 260       int left, top;
 261       ViewStart(&left, &top);
 262       wxSize size = GetClientSize();
 263       int xdelta, ydelta;
 264
 265       if(event.GetX() < WXLO_SCROLLMARGIN_X)
 266          xdelta = -(WXLO_SCROLLMARGIN_X-event.GetX());
 267       else if(event.GetX() > size.x-WXLO_SCROLLMARGIN_X)
 268          xdelta = event.GetX()-size.x+WXLO_SCROLLMARGIN_X;
 269       else
 270          xdelta = 0;
 271       if(event.GetY() < WXLO_SCROLLMARGIN_Y)
 272          ydelta = -(WXLO_SCROLLMARGIN_Y-event.GetY());
 273       else if(event.GetY() > size.y-WXLO_SCROLLMARGIN_Y)
 274          ydelta = event.GetY()-size.y+WXLO_SCROLLMARGIN_Y;
 275       else
 276          ydelta = 0;
 277
 278       //WXLO_DEBUG(("xdelta: %d", (int) xdelta));
 279       if(xdelta != 0 || ydelta != 0)
 280       {
 281          top  += ydelta; if(top < 0) top = 0;
 282          left += xdelta; if(left < 0) left = 0;
 283          Scroll(left, top);
 284       }
 285    }
 286
 287    wxPoint cursorPos;
 288    bool found;
 289    wxLayoutObject *obj = m_llist->FindObjectScreen(dc, findPos,
 290                                                    &cursorPos, &found);
 291    wxLayoutObject::UserData *u = obj ? obj->GetUserData() : NULL;
 292
 293    // has the mouse only been moved?
 294    switch ( eventId )
 295    {
 296    case WXLOWIN_MENU_MOUSEMOVE:
 297    {
 298       // this variables is used to only erase the message in the status
 299       // bar if we had put it there previously - otherwise empting status
 300       // bar might be undesirable
 301       static bool s_hasPutMessageInStatusBar = false;
 302
 303       // found is only true if we are really over an object, not just
 304       // behind it
 305       if(found && u && ! m_Selecting)
 306       {
 307          if(!m_HandCursor)
 308             SetCursor(wxCURSOR_HAND);
 309          m_HandCursor = TRUE;
 310          if(m_StatusBar && m_StatusFieldLabel != -1)
 311          {
 312             const wxString &label = u->GetLabel();
 313             if(label.Length())
 314             {
 315                m_StatusBar->SetStatusText(label,
 316                                           m_StatusFieldLabel);
 317                s_hasPutMessageInStatusBar = true;
 318             }
 319          }
 320       }
 321       else
 322       {
 323          if(m_HandCursor)
 324             SetCursor(wxCURSOR_IBEAM);
 325          m_HandCursor = FALSE;
 326          if( m_StatusBar && m_StatusFieldLabel != -1 &&
 327              s_hasPutMessageInStatusBar )
 328          {
 329             m_StatusBar->SetStatusText("", m_StatusFieldLabel);
 330          }
 331       }
 332    }
 333
 334    // selecting?
 335    if ( event.LeftIsDown() )
 336    {
 337       // m_Selecting might not be set if the button got pressed
 338       // outside this window, so check for it:
 339       if( m_Selecting )
 340       {
 341          m_llist->ContinueSelection(cursorPos, m_ClickPosition);
 342          RequestUpdate();  // TODO: we don't have to redraw everything!
 343       }
 344    }
 345
 346    if ( u )
 347    {
 348       u->DecRef();
 349       u = NULL;
 350    }
 351    break;
 352
 353    case WXLOWIN_MENU_LDOWN:
 354    {
 355       // always move cursor to mouse click:
 356       m_llist->MoveCursorTo(cursorPos);
 357
 358       // clicking a mouse removes the selection
 359       if ( m_llist->HasSelection() )
 360       {
 361          m_llist->DiscardSelection();
 362          m_Selecting = false;
 363          RequestUpdate();     // TODO: we don't have to redraw everything!
 364       }
 365
 366       // Calculate where the top of the visible area is:
 367       int x0, y0;
 368       ViewStart(&x0,&y0);
 369       int dx, dy;
 370       GetScrollPixelsPerUnit(&dx, &dy);
 371       x0 *= dx; y0 *= dy;
 372
 373       wxPoint offset(-x0+WXLO_XOFFSET, -y0+WXLO_YOFFSET);
 374
 375       if(m_CursorVisibility == -1)
 376          m_CursorVisibility = 1;
 377 #ifdef WXLAYOUT_USE_CARET
 378       if ( m_CursorVisibility == 1 )
 379          GetCaret()->Show();
 380 #endif // WXLAYOUT_USE_CARET
 381
 382       if(m_CursorVisibility)
 383       {
 384          // draw a thick cursor for editable windows with focus
 385          m_llist->DrawCursor(dc, m_HaveFocus && IsEditable(), offset);
 386       }
 387
 388 #ifdef __WXGTK__
 389       RequestUpdate(); // RequestUpdate suppresses flicker under GTK
 390 #endif // wxGTK
 391
 392       // start selection
 393       m_llist->StartSelection(wxPoint(-1, -1), m_ClickPosition);
 394       m_Selecting = true;
 395    }
 396    break;
 397
 398    case WXLOWIN_MENU_LUP:
 399       if ( m_Selecting )
 400       {
 401          // end selection at the cursor position corresponding to the
 402          // current mouse position, but don´t move cursor there.
 403          m_llist->EndSelection(cursorPos,m_ClickPosition);
 404          m_Selecting = false;
 405
 406          RequestUpdate();     // TODO: we don't have to redraw everything!
 407       }
 408       break;
 409
 410    case WXLOWIN_MENU_MDOWN:
 411       Paste(TRUE);
 412       break;
 413
 414    case WXLOWIN_MENU_DBLCLICK:
 415       // select a word under cursor
 416       m_llist->MoveCursorTo(cursorPos);
 417       m_llist->MoveCursorWord(-1);
 418       m_llist->StartSelection();
 419       m_llist->MoveCursorWord(1, false);
 420       m_llist->EndSelection();
 421       m_Selecting = false;
 422       RequestUpdate();     // TODO: we don't have to redraw everything!
 423       break;
 424    }
 425
 426    // notify about mouse events?
 427    if( m_doSendEvents )
 428    {
 429       // only do the menu if activated, editable and not on a clickable object
 430       if(eventId == WXLOWIN_MENU_RCLICK
 431          && IsEditable()
 432          && (! obj || u == NULL))
 433       {
 434          PopupMenu(m_PopupMenu, m_ClickPosition.x, m_ClickPosition.y);
 435          if(u) u->DecRef();
 436          return;
 437       }
 438
 439       // find the object at this position
 440       if(obj)
 441       {
 442          wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, eventId);
 443          commandEvent.SetEventObject( this );
 444          commandEvent.SetClientData((char *)obj);
 445          GetEventHandler()->ProcessEvent(commandEvent);
 446       }
 447    }
 448
 449    if( u ) u->DecRef();
 450 }
 451
 452 // ----------------------------------------------------------------------------
 453 // keyboard handling.
 454 // ----------------------------------------------------------------------------
 455
 456 void
 457 wxLayoutWindow::OnChar(wxKeyEvent& event)
 458 {
 459    int keyCode = event.KeyCode();
 460    bool ctrlDown = event.ControlDown();
 461
 462 #ifdef WXLAYOUT_DEBUG
 463    if(keyCode == WXK_F1)
 464    {
 465       m_llist->Debug();
 466       return;
 467    }
 468 #endif
 469
 470    // Force m_Selecting to be false if shift is no longer
 471    // pressed. OnKeyUp() cannot catch all Shift-Up events.
 472    if(m_Selecting && !event.ShiftDown())
 473    {
 474       m_Selecting = false;
 475       m_llist->EndSelection();
 476       m_llist->DiscardSelection(); //FIXME: correct?
 477    }
 478
 479    // If we deleted the selection here, we must not execute the
 480    // deletion in Delete/Backspace handling.
 481    bool deletedSelection = false;
 482    // pressing any non-arrow key optionally replaces the selection:
 483    if(m_AutoDeleteSelection
 484       && !m_Selecting
 485       && m_llist->HasSelection()
 486       && ! IsDirectionKey(keyCode)
 487       && ! (event.AltDown() || ctrlDown)
 488       )
 489    {
 490       m_llist->DeleteSelection();
 491       deletedSelection = true;
 492       SetDirty();
 493    }
 494
 495    // <Shift>+<arrow> starts selection
 496    if ( IsDirectionKey(keyCode) )
 497    {
 498       // just continue the old selection
 499       if ( m_Selecting )
 500       {
 501          if( event.ShiftDown() )
 502             m_llist->ContinueSelection();
 503          else
 504          {
 505             m_llist->DiscardSelection();
 506             m_Selecting = false;
 507          }
 508       }
 509       else if( event.ShiftDown() )
 510       {
 511          m_Selecting = true;
 512          m_llist->StartSelection();
 513       }
 514    }
 515
 516    // If needed, make cursor visible:
 517    if(m_CursorVisibility == -1)
 518       m_CursorVisibility = 1;
 519
 520    /* These two nested switches work like this:
 521       The first one processes all non-editing keycodes, to move the
 522       cursor, etc. It's default will process all keycodes causing
 523       modifications to the buffer, but only if editing is allowed.
 524    */
 525    switch(keyCode)
 526    {
 527    case WXK_RIGHT:
 528       if ( ctrlDown )
 529          m_llist->MoveCursorWord(1);
 530       else
 531          m_llist->MoveCursorHorizontally(1);
 532       break;
 533    case WXK_LEFT:
 534       if ( ctrlDown )
 535          m_llist->MoveCursorWord(-1);
 536       else
 537          m_llist->MoveCursorHorizontally(-1);
 538       break;
 539    case WXK_UP:
 540       m_llist->MoveCursorVertically(-1);
 541       break;
 542    case WXK_DOWN:
 543       m_llist->MoveCursorVertically(1);
 544       break;
 545    case WXK_PRIOR:
 546       m_llist->MoveCursorVertically(-Y_SCROLL_PAGE);
 547       break;
 548    case WXK_NEXT:
 549       m_llist->MoveCursorVertically(Y_SCROLL_PAGE);
 550       break;
 551    case WXK_HOME:
 552       if ( ctrlDown )
 553          m_llist->MoveCursorTo(wxPoint(0, 0));
 554       else
 555          m_llist->MoveCursorToBeginOfLine();
 556       break;
 557    case WXK_END:
 558       if ( ctrlDown )
 559          m_llist->MoveCursorToEnd();
 560       else
 561          m_llist->MoveCursorToEndOfLine();
 562       break;
 563    default:
 564
 565       if(ctrlDown && ! IsEditable())
 566          switch(keyCode)
 567          {
 568          case 'c':
 569             // this should work even in read-only mode
 570             Copy();
 571             break;
 572          case 's': // search
 573             Find("");
 574             break;
 575          case 't': // search again
 576             FindAgain();
 577             break;
 578          default:
 579             // we don't handle it, maybe an accelerator?
 580             event.Skip();
 581             ;
 582          }
 583       else if( IsEditable() )
 584       {
 585          /* First, handle control keys */
 586          if(ctrlDown && ! event.AltDown())
 587          {
 588             if(keyCode >= 'A' && keyCode <= 'Z')
 589                keyCode = tolower(keyCode);
 590             switch(keyCode)
 591             {
 592             case WXK_INSERT:
 593                Copy();
 594                break;
 595             case WXK_DELETE :
 596                if(! deletedSelection)
 597                {
 598                   m_llist->DeleteWord();
 599                   SetDirty();
 600                }
 601                break;
 602             case 'd':
 603                if(! deletedSelection) // already done
 604                {
 605                   m_llist->Delete(1);
 606                   SetDirty();
 607                }
 608                break;
 609             case 'y':
 610                m_llist->DeleteLines(1);
 611                SetDirty();
 612                break;
 613             case 'h': // like backspace
 614                if(m_llist->MoveCursorHorizontally(-1))
 615                {
 616                   m_llist->Delete(1);
 617                   SetDirty();
 618                }
 619                break;
 620             case 's': // search
 621                Find("");
 622                break;
 623             case 't': // search again
 624                FindAgain();
 625                break;
 626             case 'u':
 627                m_llist->DeleteToBeginOfLine();
 628                SetDirty();
 629                break;
 630             case 'k':
 631                m_llist->DeleteToEndOfLine();
 632                SetDirty();
 633                break;
 634             case 'v':
 635                Paste();
 636                break;
 637             case 'x':
 638                Cut();
 639                break;
 640 #ifdef WXLAYOUT_DEBUG
 641             case WXK_F1:
 642                m_llist->SetFont(-1,-1,-1,-1,true);  // underlined
 643                break;
 644 #endif
 645             default:
 646             // we don't handle it, maybe an accelerator?
 647             event.Skip();
 648             }
 649          }
 650          // ALT only:
 651          else if( event.AltDown() && ! event.ControlDown() )
 652          {
 653             switch(keyCode)
 654             {
 655             case WXK_DELETE:
 656             case 'd':
 657                m_llist->DeleteWord();
 658                SetDirty();
 659                break;
 660             default:
 661                // we don't handle it, maybe an accelerator?
 662                event.Skip();
 663             }
 664          }
 665          // no control keys:
 666          else if ( ! event.AltDown() && ! event.ControlDown())
 667          {
 668             switch(keyCode)
 669             {
 670             case WXK_INSERT:
 671                if(event.ShiftDown())
 672                   Paste();
 673                break;
 674             case WXK_DELETE :
 675                if(event.ShiftDown())
 676                   Cut();
 677                else
 678                   if(! deletedSelection)
 679                   {
 680                      m_llist->Delete(1);
 681                      SetDirty();
 682                   }
 683                break;
 684             case WXK_BACK: // backspace
 685                if(! deletedSelection)
 686                   if(m_llist->MoveCursorHorizontally(-1))
 687                   {
 688                      m_llist->Delete(1);
 689                      SetDirty();
 690                   }
 691                break;
 692             case WXK_RETURN:
 693                if(m_WrapMargin > 0)
 694                   m_llist->WrapLine(m_WrapMargin);
 695                m_llist->LineBreak();
 696                SetDirty();
 697                break;
 698
 699             case WXK_TAB:
 700                if ( !event.ShiftDown() )
 701                {
 702                   // TODO should be configurable
 703                   static const int tabSize = 8;
 704
 705                   CoordType x = m_llist->GetCursorPos().x;
 706                   size_t numSpaces = tabSize - x % tabSize;
 707                   m_llist->Insert(wxString(' ', numSpaces));
 708                   SetDirty();
 709                }
 710                break;
 711
 712             default:
 713                if((!(event.ControlDown() || event.AltDown()
 714                   ))
 715                   && (keyCode < 256 && keyCode >= 32)
 716                   )
 717                {
 718                   if(m_WrapMargin > 0 && isspace(keyCode))
 719                      m_llist->WrapLine(m_WrapMargin);
 720                   m_llist->Insert((char)keyCode);
 721                   SetDirty();
 722                }
 723                else
 724                   // we don't handle it, maybe an accelerator?
 725                   event.Skip();
 726                break;
 727             }
 728          }
 729       }// if(IsEditable())
 730       else
 731          // we don't handle it, maybe an accelerator?
 732          event.Skip();
 733    }// first switch()
 734
 735    if ( m_Selecting )
 736    {
 737       // continue selection to the current (new) cursor position
 738       m_llist->ContinueSelection();
 739    }
 740    ScrollToCursor();
 741    // refresh the screen
 742    RequestUpdate(m_llist->GetUpdateRect());
 743 }
 744
 745 void
 746 wxLayoutWindow::OnKeyUp(wxKeyEvent& event)
 747 {
 748    if ( event.KeyCode() == WXK_SHIFT && m_Selecting )
 749    {
 750       m_llist->EndSelection();
 751       m_Selecting = false;
 752    }
 753
 754    event.Skip();
 755 }
 756
 757
 758 void
 759 wxLayoutWindow::ScrollToCursor(void)
 760 {
 761    //is always needed to make sure we know where the cursor is
 762    //if(IsDirty())
 763    RequestUpdate(m_llist->GetUpdateRect());
 764
 765    int x0,y0,x1,y1, dx, dy;
 766
 767    // Calculate where the top of the visible area is:
 768    ViewStart(&x0,&y0);
 769    GetScrollPixelsPerUnit(&dx, &dy);
 770    x0 *= dx; y0 *= dy;
 771
 772    WXLO_DEBUG(("ScrollToCursor: ViewStart is %d/%d", x0, y0));
 773
 774    // Get the size of the visible window:
 775    GetClientSize(&x1, &y1);
 776
 777    // Make sure that the scrollbars are at a position so that the cursor is
 778    // visible if we are editing
 779    WXLO_DEBUG(("m_ScrollToCursor = %d", (int) m_ScrollToCursor));
 780    wxPoint cc = m_llist->GetCursorScreenPos();
 781
 782    // the cursor should be completely visible in both directions
 783    wxPoint cs(m_llist->GetCursorSize());
 784    int nx = -1,
 785        ny = -1;
 786    if ( cc.x < x0 || cc.x >= x0 + x1 - cs.x )
 787    {
 788       nx = cc.x - x1/2;
 789       if ( nx < 0 )
 790          nx = 0;
 791    }
 792
 793    if ( cc.y < y0 || cc.y >= y0 + y1 - cs.y )
 794    {
 795       ny = cc.y - y1/2;
 796       if ( ny < 0)
 797          ny = 0;
 798    }
 799
 800    if ( nx != -1 || ny != -1 )
 801    {
 802       // set new view start
 803       Scroll(nx == -1 ? -1 : (nx+dx-1)/dx, ny == -1 ? -1 : (ny+dy-1)/dy);
 804       // avoid recursion
 805       m_ScrollToCursor = false;
 806       RequestUpdate();
 807    }
 808 }
 809
 810 void
 811 wxLayoutWindow::OnPaint( wxPaintEvent &WXUNUSED(event))
 812 {
 813    wxRect region = GetUpdateRegion().GetBox();
 814    InternalPaint(&region);
 815 }
 816
 817 void
 818 wxLayoutWindow::RequestUpdate(const wxRect *updateRect)
 819 {
 820 #ifdef __WXGTK__
 821    // Calling Refresh() causes bad flicker under wxGTK!!!
 822    InternalPaint(updateRect);
 823 #else
 824    // shouldn't specify the update rectangle if it doesn't include all the
 825    // changed locations - otherwise, they won't be repainted at all because
 826    // the system clips the display to the update rect
 827    Refresh(FALSE); //, updateRect);
 828 #endif
 829 }
 830
 831 void
 832 wxLayoutWindow::InternalPaint(const wxRect *updateRect)
 833 {
 834    wxPaintDC dc( this );
 835    PrepareDC( dc );
 836
 837 #ifdef WXLAYOUT_USE_CARET
 838    // hide the caret before drawing anything
 839    GetCaret()->Hide();
 840 #endif // WXLAYOUT_USE_CARET
 841
 842    int x0,y0,x1,y1, dx, dy;
 843
 844    // Calculate where the top of the visible area is:
 845    ViewStart(&x0,&y0);
 846    GetScrollPixelsPerUnit(&dx, &dy);
 847    x0 *= dx; y0 *= dy;
 848
 849    // Get the size of the visible window:
 850    GetClientSize(&x1,&y1);
 851    wxASSERT(x1 >= 0);
 852    wxASSERT(y1 >= 0);
 853
 854    if(updateRect)
 855    {
 856       WXLO_DEBUG(("Update rect: %ld,%ld / %ld,%ld",
 857                   updateRect->x, updateRect->y,
 858                   updateRect->x+updateRect->width,
 859                   updateRect->y+updateRect->height));
 860    }
 861
 862    ResizeScrollbars();
 863
 864
 865    /* Check whether the window has grown, if so, we need to reallocate
 866       the bitmap to be larger. */
 867    if(x1 > m_bitmapSize.x || y1 > m_bitmapSize.y)
 868    {
 869       wxASSERT(m_bitmapSize.x > 0);
 870       wxASSERT(m_bitmapSize.y > 0);
 871
 872       m_memDC->SelectObject(wxNullBitmap);
 873       delete m_bitmap;
 874       m_bitmapSize = wxPoint(x1,y1);
 875       m_bitmap = new wxBitmap(x1,y1);
 876       m_memDC->SelectObject(*m_bitmap);
 877    }
 878
 879    m_memDC->SetDeviceOrigin(0,0);
 880    m_memDC->SetBackground(wxBrush(m_llist->GetDefaultStyleInfo().GetBGColour(),wxSOLID));
 881    m_memDC->SetPen(wxPen(m_llist->GetDefaultStyleInfo().GetBGColour(),
 882                          0,wxTRANSPARENT));
 883    m_memDC->SetLogicalFunction(wxCOPY);
 884    m_memDC->Clear();
 885
 886    // fill the background with the background bitmap
 887    if(m_BGbitmap)
 888    {
 889       CoordType
 890          y, x,
 891          w = m_BGbitmap->GetWidth(),
 892          h = m_BGbitmap->GetHeight();
 893       for(y = 0; y < y1; y+=h)
 894          for(x = 0; x < x1; x+=w)
 895             m_memDC->DrawBitmap(*m_BGbitmap, x, y);
 896       m_memDC->SetBackgroundMode(wxTRANSPARENT);
 897    }
 898
 899    // This is the important bit: we tell the list to draw itself
 900 #if WXLO_DEBUG_URECT
 901    if(updateRect)
 902    {
 903       WXLO_DEBUG(("Update rect: %ld,%ld / %ld,%ld",
 904                   updateRect->x, updateRect->y,
 905                   updateRect->x+updateRect->width,
 906                   updateRect->y+updateRect->height));
 907    }
 908 #endif
 909
 910    // Device origins on the memDC are suspect, we translate manually
 911    // with the translate parameter of Draw().
 912    wxPoint offset(-x0+WXLO_XOFFSET,-y0+WXLO_YOFFSET);
 913    m_llist->Draw(*m_memDC,offset, y0, y0+y1);
 914
 915    // We start calculating a new update rect before drawing the
 916    // cursor, so that the cursor coordinates get included in the next
 917    // update rectangle (although they are drawn on the memDC, this is
 918    // needed to erase it):
 919    m_llist->InvalidateUpdateRect();
 920    if(m_CursorVisibility != 0)
 921    {
 922       // draw a thick cursor for editable windows with focus
 923       m_llist->DrawCursor(*m_memDC,
 924                           m_HaveFocus && IsEditable(),
 925                           offset);
 926    }
 927
 928 // Now copy everything to the screen:
 929 #if 0
 930    // This somehow doesn't work, but even the following bit with the
 931    // whole rect at once is still a bit broken I think.
 932    wxRegionIterator ri ( GetUpdateRegion() );
 933    if(ri)
 934       while(ri)
 935       {
 936          WXLO_DEBUG(("UpdateRegion: %ld,%ld, %ld,%ld",
 937                      ri.GetX(),ri.GetY(),ri.GetW(),ri.GetH()));
 938          dc.Blit(x0+ri.GetX(),y0+ri.GetY(),ri.GetW(),ri.GetH(),
 939                  m_memDC,ri.GetX(),ri.GetY(),wxCOPY,FALSE);
 940          ri++;
 941       }
 942    else
 943 #endif
 944    {
 945       // FIXME: Trying to copy only the changed parts, but it does not seem
 946       // to work:
 947 //      x0 = updateRect->x; y0 = updateRect->y;
 948 //      if(updateRect->height < y1)
 949 //         y1 = updateRect->height;
 950 //      y1 += WXLO_YOFFSET; //FIXME might not be needed
 951       dc.Blit(x0,y0,x1,y1,m_memDC,0,0,wxCOPY,FALSE);
 952    }
 953
 954 #ifdef WXLAYOUT_USE_CARET
 955    // show the caret back after everything is redrawn
 956    GetCaret()->Show();
 957 #endif // WXLAYOUT_USE_CARET
 958
 959    ResetDirty();
 960
 961    if ( m_StatusBar && m_StatusFieldCursor != -1 )
 962    {
 963       static wxPoint s_oldCursorPos(-1, -1);
 964
 965       wxPoint pos(m_llist->GetCursorPos());
 966
 967       // avoid unnecessary status bar refreshes
 968       if ( pos != s_oldCursorPos )
 969       {
 970          s_oldCursorPos = pos;
 971
 972          wxString label;
 973          label.Printf(_("Ln:%d Col:%d"), pos.y + 1, pos.x + 1);
 974          m_StatusBar->SetStatusText(label, m_StatusFieldCursor);
 975       }
 976    }
 977 }
 978
 979 void
 980 wxLayoutWindow::OnSize(wxSizeEvent &event)
 981 {
 982    if ( m_llist )
 983       ResizeScrollbars();
 984
 985    event.Skip();
 986 }
 987
 988 /*
 989 Change the range and position of scrollbars. Has evolved into a
 990 generic Update function which will at some time later cause a repaint
 991 as needed.
 992 */
 993
 994 void
 995 wxLayoutWindow::ResizeScrollbars(bool exact)
 996 {
 997
 998    if(! IsDirty())
 999       return;
1000
1001    wxClientDC dc( this );
1002    PrepareDC( dc );
1003 //      m_llist->ForceTotalLayout();
1004    m_llist->Layout(dc);
1005    ResetDirty();
1006
1007    wxPoint max = m_llist->GetSize();
1008    wxSize size = GetClientSize();
1009
1010    WXLO_DEBUG(("ResizeScrollbars: max size = (%ld, %ld)",
1011                (long int)max.x, (long int) max.y));
1012
1013    // in the absence of scrollbars we should compare with the client size
1014    if ( !m_hasHScrollbar )
1015       m_maxx = size.x;// - WXLO_ROFFSET;
1016    if ( !m_hasVScrollbar )
1017       m_maxy = size.y;// - WXLO_BOFFSET;
1018
1019    // check if the text hasn't become too big
1020    // TODO why do we set both at once? they're independent...
1021    if( max.x > m_maxx - WXLO_ROFFSET
1022        || max.y > m_maxy - WXLO_BOFFSET
1023        || max.x < m_maxx - X_SCROLL_PAGE
1024        || max.y < m_maxy - Y_SCROLL_PAGE
1025        || exact )
1026    {
1027       // text became too large
1028       if ( !exact )
1029       {
1030          // add an extra bit to the sizes to avoid future updates
1031          max.x += WXLO_ROFFSET;
1032          max.y += WXLO_BOFFSET;
1033       }
1034
1035       bool done = FALSE;
1036       if(max.x < X_SCROLL_PAGE)
1037       {
1038          SetScrollbars(0,-1,0,-1,0,-1,true);
1039          m_hasHScrollbar = FALSE;
1040          done = TRUE;
1041       }
1042       if(max.y < Y_SCROLL_PAGE)
1043       {
1044          SetScrollbars(-1,0,-1,0,-1,0,true);
1045          m_hasVScrollbar = FALSE;
1046          done = TRUE;
1047       }
1048       if(! done)
1049       {
1050          ViewStart(&m_ViewStartX, &m_ViewStartY);
1051          SetScrollbars(X_SCROLL_PAGE,
1052                        Y_SCROLL_PAGE,
1053                        max.x / X_SCROLL_PAGE + 1,
1054                        max.y / Y_SCROLL_PAGE + 1,
1055                        m_ViewStartX, m_ViewStartY,
1056                        true);
1057          m_hasHScrollbar =
1058             m_hasVScrollbar = true;
1059       }
1060
1061       m_maxx = max.x + X_SCROLL_PAGE;
1062       m_maxy = max.y + Y_SCROLL_PAGE;
1063    }
1064 }
1065
1066 // ----------------------------------------------------------------------------
1067 //
1068 // clipboard operations
1069 //
1070 // ----------------------------------------------------------------------------
1071
1072 void
1073 wxLayoutWindow::Paste(bool primary)
1074 {
1075    // this only has an effect under X11:
1076    if(primary) wxTheClipboard->UsePrimarySelection();
1077    // Read some text
1078    if (wxTheClipboard->Open())
1079    {
1080 #if wxUSE_PRIVATE_CLIPBOARD_FORMAT
1081       wxLayoutDataObject wxldo;
1082       if (wxTheClipboard->IsSupported( wxldo.GetFormat() ))
1083       {
1084          wxTheClipboard->GetData(wxldo);
1085          {
1086          }
1087          //FIXME: missing functionality  m_llist->Insert(wxldo.GetList());
1088       }
1089       else
1090 #endif
1091       {
1092          wxTextDataObject data;
1093          if (wxTheClipboard->IsSupported( data.GetFormat() )
1094              && wxTheClipboard->GetData(data) )
1095          {
1096             wxString text = data.GetText();
1097             wxLayoutImportText( m_llist, text);
1098             SetDirty();
1099          }
1100       }
1101       wxTheClipboard->Close();
1102    }
1103 }
1104
1105 bool
1106 wxLayoutWindow::Copy(bool invalidate)
1107 {
1108    // Calling GetSelection() will automatically do an EndSelection()
1109    // on the list, but we need to take a note of it, too:
1110    if(m_Selecting)
1111    {
1112       m_Selecting = false;
1113       m_llist->EndSelection();
1114    }
1115
1116    wxLayoutDataObject wldo;
1117    wxLayoutList *llist = m_llist->GetSelection(&wldo, invalidate);
1118    if(! llist)
1119       return FALSE;
1120    // Export selection as text:
1121    wxString text;
1122    wxLayoutExportObject *exp;
1123    wxLayoutExportStatus status(llist);
1124    while((exp = wxLayoutExport( &status, WXLO_EXPORT_AS_TEXT)) != NULL)
1125    {
1126       if(exp->type == WXLO_EXPORT_TEXT)
1127          text << *(exp->content.text);
1128       delete exp;
1129    }
1130    delete llist;
1131
1132    // The exporter always appends a newline, so we chop it off if it
1133    // is there:
1134    {
1135       size_t len = text.Length();
1136       if(len > 2 && text[len-2] ==  '\r') // Windows
1137          text = text.Mid(0,len-2);
1138       else if(len > 1 && text[len-1] == '\n')
1139          text = text.Mid(0,len-1);
1140    }
1141
1142    if (wxTheClipboard->Open())
1143    {
1144       wxTextDataObject *data = new wxTextDataObject( text );
1145       bool  rc = wxTheClipboard->SetData( data );
1146 #if wxUSE_PRIVATE_CLIPBOARD_FORMAT
1147       rc |= wxTheClipboard->AddData( &wldo );
1148 #endif
1149       wxTheClipboard->Close();
1150       return rc;
1151    }
1152
1153    return FALSE;
1154 }
1155
1156 bool
1157 wxLayoutWindow::Cut(void)
1158 {
1159    if(Copy(false)) // do not invalidate selection after copy
1160    {
1161       m_llist->DeleteSelection();
1162       SetDirty();
1163       return TRUE;
1164    }
1165    else
1166       return FALSE;
1167 }
1168
1169 // ----------------------------------------------------------------------------
1170 // searching
1171 // ----------------------------------------------------------------------------
1172
1173 bool
1174 wxLayoutWindow::Find(const wxString &needle,
1175                      wxPoint * fromWhere,
1176                      const wxString &configPath)
1177 {
1178 #ifdef M_BASEDIR
1179    wxPoint found;
1180
1181    if(needle.Length() == 0)
1182    {
1183       if( ! MInputBox(&m_FindString,
1184                       _("Find text"),
1185                       _("   Find:"),
1186                       this,
1187                       configPath, "")
1188           || strutil_isempty(m_FindString))
1189          return true;
1190    }
1191    else
1192       m_FindString = needle;
1193
1194    if(fromWhere == NULL)
1195       found = m_llist->FindText(m_FindString, m_llist->GetCursorPos());
1196    else
1197       found = m_llist->FindText(m_FindString, *fromWhere);
1198    if(found.x != -1)
1199    {
1200       if(fromWhere)
1201       {
1202          *fromWhere = found;
1203          fromWhere->x ++;
1204       }
1205       m_llist->MoveCursorTo(found);
1206       ScrollToCursor();
1207       RequestUpdate();
1208       return true;
1209    }
1210 #endif
1211    return false;
1212 }
1213
1214
1215 bool
1216 wxLayoutWindow::FindAgain(void)
1217 {
1218    bool rc = Find(m_FindString);
1219    return rc;
1220 }
1221
1222 // ----------------------------------------------------------------------------
1223 // popup menu stuff
1224 // ----------------------------------------------------------------------------
1225
1226 wxMenu *
1227 wxLayoutWindow::MakeFormatMenu()
1228 {
1229    wxMenu *m = new wxMenu(_("Layout Menu"));
1230
1231    m->Append(WXLOWIN_MENU_LARGER   ,_("&Larger"),_("Switch to larger font."), false);
1232    m->Append(WXLOWIN_MENU_SMALLER  ,_("&Smaller"),_("Switch to smaller font."), false);
1233    m->AppendSeparator();
1234    m->Append(WXLOWIN_MENU_UNDERLINE, _("&Underline"),_("Underline mode."), true);
1235    m->Append(WXLOWIN_MENU_BOLD, _("&Bold"),_("Bold mode."), true);
1236    m->Append(WXLOWIN_MENU_ITALICS, _("&Italics"),_("Italics mode."), true);
1237    m->AppendSeparator();
1238    m->Append(WXLOWIN_MENU_ROMAN     ,_("&Roman"),_("Switch to roman font."), false);
1239    m->Append(WXLOWIN_MENU_TYPEWRITER,_("&Typewriter"),_("Switch to typewriter font."), false);
1240    m->Append(WXLOWIN_MENU_SANSSERIF ,_("&Sans Serif"),_("Switch to sans serif font."), false);
1241
1242    return m;
1243 }
1244
1245 void wxLayoutWindow::OnUpdateMenuUnderline(wxUpdateUIEvent& event)
1246 {
1247    event.Check(m_llist->IsFontUnderlined());
1248 }
1249
1250 void wxLayoutWindow::OnUpdateMenuBold(wxUpdateUIEvent& event)
1251 {
1252    event.Check(m_llist->IsFontBold());
1253 }
1254
1255 void wxLayoutWindow::OnUpdateMenuItalic(wxUpdateUIEvent& event)
1256 {
1257    event.Check(m_llist->IsFontItalic());
1258 }
1259
1260 void wxLayoutWindow::OnMenu(wxCommandEvent& event)
1261 {
1262    switch (event.GetId())
1263    {
1264    case WXLOWIN_MENU_LARGER:
1265       m_llist->SetFontLarger(); RequestUpdate(); break;
1266    case WXLOWIN_MENU_SMALLER:
1267       m_llist->SetFontSmaller(); RequestUpdate(); break;
1268    case WXLOWIN_MENU_UNDERLINE:
1269       m_llist->ToggleFontUnderline(); RequestUpdate(); break;
1270    case WXLOWIN_MENU_BOLD:
1271       m_llist->ToggleFontWeight(); RequestUpdate(); break;
1272    case WXLOWIN_MENU_ITALICS:
1273       m_llist->ToggleFontItalics(); RequestUpdate(); break;
1274    case WXLOWIN_MENU_ROMAN:
1275       m_llist->SetFontFamily(wxROMAN); RequestUpdate(); break;
1276    case WXLOWIN_MENU_TYPEWRITER:
1277       m_llist->SetFontFamily(wxFIXED); RequestUpdate(); break;
1278    case WXLOWIN_MENU_SANSSERIF:
1279       m_llist->SetFontFamily(wxSWISS); RequestUpdate(); break;
1280    }
1281 }
1282
1283 // ----------------------------------------------------------------------------
1284 // focus
1285 // ----------------------------------------------------------------------------
1286
1287 void
1288 wxLayoutWindow::OnSetFocus(wxFocusEvent &ev)
1289 {
1290    m_HaveFocus = true;
1291    ev.Skip();
1292    RequestUpdate(); // cursor must change
1293 }
1294
1295 void
1296 wxLayoutWindow::OnKillFocus(wxFocusEvent &ev)
1297 {
1298    m_HaveFocus = false;
1299    ev.Skip();
1300    RequestUpdate();// cursor must change
1301 }
1302
1303 // ----------------------------------------------------------------------------
1304 // private functions
1305 // ----------------------------------------------------------------------------
1306
1307 static bool IsDirectionKey(long keyCode)
1308 {
1309    switch(keyCode)
1310    {
1311       case WXK_UP:
1312       case WXK_DOWN:
1313       case WXK_RIGHT:
1314       case WXK_LEFT:
1315       case WXK_PRIOR:
1316       case WXK_NEXT:
1317       case WXK_HOME:
1318       case WXK_END:
1319          return true;
1320
1321       default:
1322          return false;
1323    }
1324 }