src/richtext/richtextctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/richtext/richeditctrl.cpp
   3 // Purpose:     A rich edit control
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     2005-09-30
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_RICHTEXT
  20
  21 #include "wx/richtext/richtextctrl.h"
  22 #include "wx/richtext/richtextstyles.h"
  23
  24 #ifndef WX_PRECOMP
  25     #include "wx/wx.h"
  26     #include "wx/settings.h"
  27 #endif
  28
  29 #include "wx/timer.h"
  30 #include "wx/textfile.h"
  31 #include "wx/ffile.h"
  32 #include "wx/filename.h"
  33 #include "wx/dcbuffer.h"
  34 #include "wx/arrimpl.cpp"
  35 #include "wx/fontenum.h"
  36 #include "wx/accel.h"
  37
  38 // DLL options compatibility check:
  39 #include "wx/app.h"
  40 WX_CHECK_BUILD_OPTIONS("wxRichTextCtrl")
  41
  42 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_LEFT_CLICK, wxRichTextEvent );
  43 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_MIDDLE_CLICK, wxRichTextEvent );
  44 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_RIGHT_CLICK, wxRichTextEvent );
  45 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_LEFT_DCLICK, wxRichTextEvent );
  46 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_RETURN, wxRichTextEvent );
  47 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CHARACTER, wxRichTextEvent );
  48 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_DELETE, wxRichTextEvent );
  49
  50 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACING, wxRichTextEvent );
  51 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_REPLACED, wxRichTextEvent );
  52 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGING, wxRichTextEvent );
  53 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLESHEET_CHANGED, wxRichTextEvent );
  54
  55 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CONTENT_INSERTED, wxRichTextEvent );
  56 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED, wxRichTextEvent );
  57 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_STYLE_CHANGED, wxRichTextEvent );
  58 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_SELECTION_CHANGED, wxRichTextEvent );
  59 wxDEFINE_EVENT( wxEVT_COMMAND_RICHTEXT_BUFFER_RESET, wxRichTextEvent );
  60
  61 #if wxRICHTEXT_USE_OWN_CARET
  62
  63 /*!
  64  * wxRichTextCaret
  65  *
  66  * This implements a non-flashing cursor in case there
  67  * are platform-specific problems with the generic caret.
  68  * wxRICHTEXT_USE_OWN_CARET is set in richtextbuffer.h.
  69  */
  70
  71 class wxRichTextCaret;
  72 class wxRichTextCaretTimer: public wxTimer
  73 {
  74   public:
  75     wxRichTextCaretTimer(wxRichTextCaret* caret)
  76     {
  77         m_caret = caret;
  78     }
  79     virtual void Notify();
  80     wxRichTextCaret* m_caret;
  81 };
  82
  83 class wxRichTextCaret: public wxCaret
  84 {
  85 public:
  86     // ctors
  87     // -----
  88         // default - use Create()
  89     wxRichTextCaret(): m_timer(this)  { Init(); }
  90         // creates a block caret associated with the given window
  91     wxRichTextCaret(wxRichTextCtrl *window, int width, int height)
  92         : wxCaret(window, width, height), m_timer(this) { Init(); m_richTextCtrl = window; }
  93     wxRichTextCaret(wxRichTextCtrl *window, const wxSize& size)
  94         : wxCaret(window, size), m_timer(this) { Init(); m_richTextCtrl = window; }
  95
  96     virtual ~wxRichTextCaret();
  97
  98     // implementation
  99     // --------------
 100
 101     // called by wxWindow (not using the event tables)
 102     virtual void OnSetFocus();
 103     virtual void OnKillFocus();
 104
 105     // draw the caret on the given DC
 106     void DoDraw(wxDC *dc);
 107
 108     // get the visible count
 109     int GetVisibleCount() const { return m_countVisible; }
 110
 111     // delay repositioning
 112     bool GetNeedsUpdate() const { return m_needsUpdate; }
 113     void SetNeedsUpdate(bool needsUpdate = true ) { m_needsUpdate = needsUpdate; }
 114
 115     void Notify();
 116
 117 protected:
 118     virtual void DoShow();
 119     virtual void DoHide();
 120     virtual void DoMove();
 121     virtual void DoSize();
 122
 123     // refresh the caret
 124     void Refresh();
 125
 126 private:
 127     void Init();
 128
 129     int           m_xOld,
 130                   m_yOld;
 131     bool          m_hasFocus;       // true => our window has focus
 132     bool          m_needsUpdate;    // must be repositioned
 133     bool          m_flashOn;
 134     wxRichTextCaretTimer m_timer;
 135     wxRichTextCtrl* m_richTextCtrl;
 136 };
 137 #endif
 138
 139 IMPLEMENT_DYNAMIC_CLASS( wxRichTextCtrl, wxTextCtrlBase )
 140
 141 IMPLEMENT_DYNAMIC_CLASS( wxRichTextEvent, wxNotifyEvent )
 142
 143 BEGIN_EVENT_TABLE( wxRichTextCtrl, wxTextCtrlBase )
 144     EVT_PAINT(wxRichTextCtrl::OnPaint)
 145     EVT_ERASE_BACKGROUND(wxRichTextCtrl::OnEraseBackground)
 146     EVT_IDLE(wxRichTextCtrl::OnIdle)
 147     EVT_SCROLLWIN(wxRichTextCtrl::OnScroll)
 148     EVT_LEFT_DOWN(wxRichTextCtrl::OnLeftClick)
 149     EVT_MOTION(wxRichTextCtrl::OnMoveMouse)
 150     EVT_LEFT_UP(wxRichTextCtrl::OnLeftUp)
 151     EVT_RIGHT_DOWN(wxRichTextCtrl::OnRightClick)
 152     EVT_MIDDLE_DOWN(wxRichTextCtrl::OnMiddleClick)
 153     EVT_LEFT_DCLICK(wxRichTextCtrl::OnLeftDClick)
 154     EVT_CHAR(wxRichTextCtrl::OnChar)
 155     EVT_KEY_DOWN(wxRichTextCtrl::OnChar)
 156     EVT_SIZE(wxRichTextCtrl::OnSize)
 157     EVT_SET_FOCUS(wxRichTextCtrl::OnSetFocus)
 158     EVT_KILL_FOCUS(wxRichTextCtrl::OnKillFocus)
 159     EVT_MOUSE_CAPTURE_LOST(wxRichTextCtrl::OnCaptureLost)
 160     EVT_CONTEXT_MENU(wxRichTextCtrl::OnContextMenu)
 161     EVT_SYS_COLOUR_CHANGED(wxRichTextCtrl::OnSysColourChanged)
 162
 163     EVT_MENU(wxID_UNDO, wxRichTextCtrl::OnUndo)
 164     EVT_UPDATE_UI(wxID_UNDO, wxRichTextCtrl::OnUpdateUndo)
 165
 166     EVT_MENU(wxID_REDO, wxRichTextCtrl::OnRedo)
 167     EVT_UPDATE_UI(wxID_REDO, wxRichTextCtrl::OnUpdateRedo)
 168
 169     EVT_MENU(wxID_COPY, wxRichTextCtrl::OnCopy)
 170     EVT_UPDATE_UI(wxID_COPY, wxRichTextCtrl::OnUpdateCopy)
 171
 172     EVT_MENU(wxID_PASTE, wxRichTextCtrl::OnPaste)
 173     EVT_UPDATE_UI(wxID_PASTE, wxRichTextCtrl::OnUpdatePaste)
 174
 175     EVT_MENU(wxID_CUT, wxRichTextCtrl::OnCut)
 176     EVT_UPDATE_UI(wxID_CUT, wxRichTextCtrl::OnUpdateCut)
 177
 178     EVT_MENU(wxID_CLEAR, wxRichTextCtrl::OnClear)
 179     EVT_UPDATE_UI(wxID_CLEAR, wxRichTextCtrl::OnUpdateClear)
 180
 181     EVT_MENU(wxID_SELECTALL, wxRichTextCtrl::OnSelectAll)
 182     EVT_UPDATE_UI(wxID_SELECTALL, wxRichTextCtrl::OnUpdateSelectAll)
 183 END_EVENT_TABLE()
 184
 185 /*!
 186  * wxRichTextCtrl
 187  */
 188
 189 wxArrayString wxRichTextCtrl::sm_availableFontNames;
 190
 191 wxRichTextCtrl::wxRichTextCtrl()
 192               : wxScrollHelper(this)
 193 {
 194     Init();
 195 }
 196
 197 wxRichTextCtrl::wxRichTextCtrl(wxWindow* parent,
 198                                wxWindowID id,
 199                                const wxString& value,
 200                                const wxPoint& pos,
 201                                const wxSize& size,
 202                                long style,
 203                                const wxValidator& validator,
 204                                const wxString& name)
 205               : wxScrollHelper(this)
 206 {
 207     Init();
 208     Create(parent, id, value, pos, size, style, validator, name);
 209 }
 210
 211 /// Creation
 212 bool wxRichTextCtrl::Create( wxWindow* parent, wxWindowID id, const wxString& value, const wxPoint& pos, const wxSize& size, long style,
 213                              const wxValidator& validator, const wxString& name)
 214 {
 215     style |= wxVSCROLL;
 216
 217     if (!wxTextCtrlBase::Create(parent, id, pos, size,
 218                            style|wxFULL_REPAINT_ON_RESIZE,
 219                            validator, name))
 220         return false;
 221
 222     if (!GetFont().Ok())
 223     {
 224         SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 225     }
 226
 227     // No physical scrolling, so we can preserve margins
 228     EnableScrolling(false, false);
 229
 230     if (style & wxTE_READONLY)
 231         SetEditable(false);
 232
 233     // The base attributes must all have default values
 234     wxTextAttr attributes;
 235     attributes.SetFont(GetFont());
 236     attributes.SetTextColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
 237     attributes.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
 238     attributes.SetLineSpacing(10);
 239     attributes.SetParagraphSpacingAfter(10);
 240     attributes.SetParagraphSpacingBefore(0);
 241
 242     SetBasicStyle(attributes);
 243
 244     // The default attributes will be merged with base attributes, so
 245     // can be empty to begin with
 246     wxTextAttr defaultAttributes;
 247     SetDefaultStyle(defaultAttributes);
 248
 249     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 250     SetBackgroundStyle(wxBG_STYLE_CUSTOM);
 251
 252     GetBuffer().Reset();
 253     GetBuffer().SetRichTextCtrl(this);
 254
 255 #if wxRICHTEXT_USE_OWN_CARET
 256     SetCaret(new wxRichTextCaret(this, wxRICHTEXT_DEFAULT_CARET_WIDTH, 16));
 257 #else
 258     SetCaret(new wxCaret(this, wxRICHTEXT_DEFAULT_CARET_WIDTH, 16));
 259 #endif
 260
 261     // Tell the sizers to use the given or best size
 262     SetInitialSize(size);
 263
 264 #if wxRICHTEXT_BUFFERED_PAINTING
 265     // Create a buffer
 266     RecreateBuffer(size);
 267 #endif
 268
 269     m_textCursor = wxCursor(wxCURSOR_IBEAM);
 270     m_urlCursor = wxCursor(wxCURSOR_HAND);
 271
 272     SetCursor(m_textCursor);
 273
 274     if (!value.IsEmpty())
 275         SetValue(value);
 276
 277     GetBuffer().AddEventHandler(this);
 278
 279     // Accelerators
 280     wxAcceleratorEntry entries[6];
 281
 282     entries[0].Set(wxACCEL_CMD,   (int) 'C',       wxID_COPY);
 283     entries[1].Set(wxACCEL_CMD,   (int) 'X',       wxID_CUT);
 284     entries[2].Set(wxACCEL_CMD,   (int) 'V',       wxID_PASTE);
 285     entries[3].Set(wxACCEL_CMD,   (int) 'A',       wxID_SELECTALL);
 286     entries[4].Set(wxACCEL_CMD,   (int) 'Z',       wxID_UNDO);
 287     entries[5].Set(wxACCEL_CMD,   (int) 'Y',       wxID_REDO);
 288
 289     wxAcceleratorTable accel(6, entries);
 290     SetAcceleratorTable(accel);
 291
 292     return true;
 293 }
 294
 295 wxRichTextCtrl::~wxRichTextCtrl()
 296 {
 297     GetBuffer().RemoveEventHandler(this);
 298
 299     delete m_contextMenu;
 300 }
 301
 302 /// Member initialisation
 303 void wxRichTextCtrl::Init()
 304 {
 305     m_contextMenu = NULL;
 306     m_caret = NULL;
 307     m_caretPosition = -1;
 308     m_selectionRange.SetRange(-2, -2);
 309     m_selectionAnchor = -2;
 310     m_editable = true;
 311     m_caretAtLineStart = false;
 312     m_dragging = false;
 313     m_fullLayoutRequired = false;
 314     m_fullLayoutTime = 0;
 315     m_fullLayoutSavedPosition = 0;
 316     m_delayedLayoutThreshold = wxRICHTEXT_DEFAULT_DELAYED_LAYOUT_THRESHOLD;
 317     m_caretPositionForDefaultStyle = -2;
 318 }
 319
 320 void wxRichTextCtrl::DoThaw()
 321 {
 322     if (GetBuffer().GetDirty())
 323         LayoutContent();
 324     else
 325         SetupScrollbars();
 326
 327     wxWindow::DoThaw();
 328 }
 329
 330 /// Clear all text
 331 void wxRichTextCtrl::Clear()
 332 {
 333     m_buffer.ResetAndClearCommands();
 334     m_buffer.SetDirty(true);
 335     m_caretPosition = -1;
 336     m_caretPositionForDefaultStyle = -2;
 337     m_caretAtLineStart = false;
 338     m_selectionRange.SetRange(-2, -2);
 339
 340     Scroll(0,0);
 341
 342     if (!IsFrozen())
 343     {
 344         LayoutContent();
 345         Refresh(false);
 346     }
 347
 348     wxTextCtrl::SendTextUpdatedEvent(this);
 349 }
 350
 351 /// Painting
 352 void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 353 {
 354 #if !wxRICHTEXT_USE_OWN_CARET
 355     if (GetCaret() && !IsFrozen())
 356         GetCaret()->Hide();
 357 #endif
 358
 359     {
 360 #if wxRICHTEXT_BUFFERED_PAINTING
 361         wxBufferedPaintDC dc(this, m_bufferBitmap);
 362 #else
 363         wxPaintDC dc(this);
 364 #endif
 365
 366         if (IsFrozen())
 367             return;
 368
 369         PrepareDC(dc);
 370
 371         dc.SetFont(GetFont());
 372
 373         // Paint the background
 374         PaintBackground(dc);
 375
 376         // wxRect drawingArea(GetLogicalPoint(wxPoint(0, 0)), GetClientSize());
 377
 378         wxRect drawingArea(GetUpdateRegion().GetBox());
 379         drawingArea.SetPosition(GetLogicalPoint(drawingArea.GetPosition()));
 380
 381         wxRect availableSpace(GetClientSize());
 382         if (GetBuffer().GetDirty())
 383         {
 384             GetBuffer().Layout(dc, availableSpace, wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT);
 385             GetBuffer().SetDirty(false);
 386             SetupScrollbars();
 387         }
 388
 389         wxRect clipRect(availableSpace);
 390         clipRect.x += GetBuffer().GetLeftMargin();
 391         clipRect.y += GetBuffer().GetTopMargin();
 392         clipRect.width -= (GetBuffer().GetLeftMargin() + GetBuffer().GetRightMargin());
 393         clipRect.height -= (GetBuffer().GetTopMargin() + GetBuffer().GetBottomMargin());
 394         clipRect.SetPosition(GetLogicalPoint(clipRect.GetPosition()));
 395         dc.SetClippingRegion(clipRect);
 396
 397         GetBuffer().Draw(dc, GetBuffer().GetRange(), GetInternalSelectionRange(), drawingArea, 0 /* descent */, 0 /* flags */);
 398
 399         dc.DestroyClippingRegion();
 400
 401 #if wxRICHTEXT_USE_OWN_CARET
 402         if (GetCaret()->IsVisible())
 403         {
 404             ((wxRichTextCaret*) GetCaret())->DoDraw(& dc);
 405         }
 406 #endif
 407     }
 408
 409 #if !wxRICHTEXT_USE_OWN_CARET
 410     if (GetCaret())
 411         GetCaret()->Show();
 412     PositionCaret();
 413 #endif
 414 }
 415
 416 // Empty implementation, to prevent flicker
 417 void wxRichTextCtrl::OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 418 {
 419 }
 420
 421 void wxRichTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
 422 {
 423     if (GetCaret())
 424     {
 425 #if !wxRICHTEXT_USE_OWN_CARET
 426         PositionCaret();
 427 #endif
 428         GetCaret()->Show();
 429     }
 430
 431 #if defined(__WXGTK__) && !wxRICHTEXT_USE_OWN_CARET
 432     // Work around dropouts when control is focused
 433     if (!IsFrozen())
 434     {
 435         Refresh(false);
 436     }
 437 #endif
 438 }
 439
 440 void wxRichTextCtrl::OnKillFocus(wxFocusEvent& WXUNUSED(event))
 441 {
 442     if (GetCaret())
 443         GetCaret()->Hide();
 444
 445 #if defined(__WXGTK__) && !wxRICHTEXT_USE_OWN_CARET
 446     // Work around dropouts when control is focused
 447     if (!IsFrozen())
 448     {
 449         Refresh(false);
 450     }
 451 #endif
 452 }
 453
 454 void wxRichTextCtrl::OnCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
 455 {
 456     m_dragging = false;
 457 }
 458
 459 /// Left-click
 460 void wxRichTextCtrl::OnLeftClick(wxMouseEvent& event)
 461 {
 462     SetFocus();
 463
 464     wxClientDC dc(this);
 465     PrepareDC(dc);
 466     dc.SetFont(GetFont());
 467
 468     long position = 0;
 469     int hit = GetBuffer().HitTest(dc, event.GetLogicalPosition(dc), position);
 470
 471     if (hit != wxRICHTEXT_HITTEST_NONE)
 472     {
 473         m_dragStart = event.GetLogicalPosition(dc);
 474         m_dragging = true;
 475         CaptureMouse();
 476
 477         bool caretAtLineStart = false;
 478
 479         if (hit & wxRICHTEXT_HITTEST_BEFORE)
 480         {
 481             // If we're at the start of a line (but not first in para)
 482             // then we should keep the caret showing at the start of the line
 483             // by showing the m_caretAtLineStart flag.
 484             wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
 485             wxRichTextLine* line = GetBuffer().GetLineAtPosition(position);
 486
 487             if (line && para && line->GetAbsoluteRange().GetStart() == position && para->GetRange().GetStart() != position)
 488                 caretAtLineStart = true;
 489             position --;
 490         }
 491
 492         long oldCaretPos = m_caretPosition;
 493
 494         MoveCaret(position, caretAtLineStart);
 495         SetDefaultStyleToCursorStyle();
 496
 497         if (event.ShiftDown())
 498         {
 499             if (m_selectionRange.GetStart() == -2)
 500                 ExtendSelection(oldCaretPos, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
 501             else
 502                 ExtendSelection(m_caretPosition, m_caretPosition, wxRICHTEXT_SHIFT_DOWN);
 503         }
 504         else
 505             SelectNone();
 506     }
 507
 508     event.Skip();
 509 }
 510
 511 /// Left-up
 512 void wxRichTextCtrl::OnLeftUp(wxMouseEvent& event)
 513 {
 514     if (m_dragging)
 515     {
 516         m_dragging = false;
 517         if (GetCapture() == this)
 518             ReleaseMouse();
 519
 520         // See if we clicked on a URL
 521         wxClientDC dc(this);
 522         PrepareDC(dc);
 523         dc.SetFont(GetFont());
 524
 525         long position = 0;
 526         wxPoint logicalPt = event.GetLogicalPosition(dc);
 527         int hit = GetBuffer().HitTest(dc, logicalPt, position);
 528
 529         if ((hit != wxRICHTEXT_HITTEST_NONE) && !(hit & wxRICHTEXT_HITTEST_OUTSIDE))
 530         {
 531             wxRichTextEvent cmdEvent(
 532                 wxEVT_COMMAND_RICHTEXT_LEFT_CLICK,
 533                 GetId());
 534             cmdEvent.SetEventObject(this);
 535             cmdEvent.SetPosition(m_caretPosition+1);
 536
 537             if (!GetEventHandler()->ProcessEvent(cmdEvent))
 538             {
 539                 wxTextAttr attr;
 540                 if (GetStyle(position, attr))
 541                 {
 542                     if (attr.HasFlag(wxTEXT_ATTR_URL))
 543                     {
 544                         wxString urlTarget = attr.GetURL();
 545                         if (!urlTarget.IsEmpty())
 546                         {
 547                             wxMouseEvent mouseEvent(event);
 548
 549                             long startPos = 0, endPos = 0;
 550                             wxRichTextObject* obj = GetBuffer().GetLeafObjectAtPosition(position);
 551                             if (obj)
 552                             {
 553                                 startPos = obj->GetRange().GetStart();
 554                                 endPos = obj->GetRange().GetEnd();
 555                             }
 556
 557                             wxTextUrlEvent urlEvent(GetId(), mouseEvent, startPos, endPos);
 558                             InitCommandEvent(urlEvent);
 559
 560                             urlEvent.SetString(urlTarget);
 561
 562                             GetEventHandler()->ProcessEvent(urlEvent);
 563                         }
 564                     }
 565                 }
 566             }
 567         }
 568     }
 569 }
 570
 571 /// Left-click
 572 void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
 573 {
 574     wxClientDC dc(this);
 575     PrepareDC(dc);
 576     dc.SetFont(GetFont());
 577
 578     long position = 0;
 579     wxPoint logicalPt = event.GetLogicalPosition(dc);
 580     int hit = GetBuffer().HitTest(dc, logicalPt, position);
 581
 582     // See if we need to change the cursor
 583
 584     {
 585         if (hit != wxRICHTEXT_HITTEST_NONE && !(hit & wxRICHTEXT_HITTEST_OUTSIDE))
 586         {
 587             wxTextAttr attr;
 588             if (GetStyle(position, attr))
 589             {
 590                 if (attr.HasFlag(wxTEXT_ATTR_URL))
 591                 {
 592                     SetCursor(m_urlCursor);
 593                 }
 594                 else if (!attr.HasFlag(wxTEXT_ATTR_URL))
 595                 {
 596                     SetCursor(m_textCursor);
 597                 }
 598             }
 599         }
 600         else
 601             SetCursor(m_textCursor);
 602     }
 603
 604     if (!event.Dragging())
 605     {
 606         event.Skip();
 607         return;
 608     }
 609
 610     if (m_dragging && hit != wxRICHTEXT_HITTEST_NONE)
 611     {
 612         // TODO: test closeness
 613
 614         bool caretAtLineStart = false;
 615
 616         if (hit & wxRICHTEXT_HITTEST_BEFORE)
 617         {
 618             // If we're at the start of a line (but not first in para)
 619             // then we should keep the caret showing at the start of the line
 620             // by showing the m_caretAtLineStart flag.
 621             wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
 622             wxRichTextLine* line = GetBuffer().GetLineAtPosition(position);
 623
 624             if (line && para && line->GetAbsoluteRange().GetStart() == position && para->GetRange().GetStart() != position)
 625                 caretAtLineStart = true;
 626             position --;
 627         }
 628
 629         if (m_caretPosition != position)
 630         {
 631             ExtendSelection(m_caretPosition, position, wxRICHTEXT_SHIFT_DOWN);
 632
 633             MoveCaret(position, caretAtLineStart);
 634             SetDefaultStyleToCursorStyle();
 635         }
 636     }
 637 }
 638
 639 /// Right-click
 640 void wxRichTextCtrl::OnRightClick(wxMouseEvent& event)
 641 {
 642     SetFocus();
 643
 644     wxRichTextEvent cmdEvent(
 645         wxEVT_COMMAND_RICHTEXT_RIGHT_CLICK,
 646         GetId());
 647     cmdEvent.SetEventObject(this);
 648     cmdEvent.SetPosition(m_caretPosition+1);
 649
 650     if (!GetEventHandler()->ProcessEvent(cmdEvent))
 651         event.Skip();
 652 }
 653
 654 /// Left-double-click
 655 void wxRichTextCtrl::OnLeftDClick(wxMouseEvent& WXUNUSED(event))
 656 {
 657     wxRichTextEvent cmdEvent(
 658         wxEVT_COMMAND_RICHTEXT_LEFT_DCLICK,
 659         GetId());
 660     cmdEvent.SetEventObject(this);
 661     cmdEvent.SetPosition(m_caretPosition+1);
 662
 663     if (!GetEventHandler()->ProcessEvent(cmdEvent))
 664     {
 665         SelectWord(GetCaretPosition()+1);
 666     }
 667 }
 668
 669 /// Middle-click
 670 void wxRichTextCtrl::OnMiddleClick(wxMouseEvent& event)
 671 {
 672     wxRichTextEvent cmdEvent(
 673         wxEVT_COMMAND_RICHTEXT_MIDDLE_CLICK,
 674         GetId());
 675     cmdEvent.SetEventObject(this);
 676     cmdEvent.SetPosition(m_caretPosition+1);
 677
 678     if (!GetEventHandler()->ProcessEvent(cmdEvent))
 679         event.Skip();
 680 }
 681
 682 /// Key press
 683 void wxRichTextCtrl::OnChar(wxKeyEvent& event)
 684 {
 685     int flags = 0;
 686     if (event.CmdDown())
 687         flags |= wxRICHTEXT_CTRL_DOWN;
 688     if (event.ShiftDown())
 689         flags |= wxRICHTEXT_SHIFT_DOWN;
 690     if (event.AltDown())
 691         flags |= wxRICHTEXT_ALT_DOWN;
 692
 693     if (event.GetEventType() == wxEVT_KEY_DOWN)
 694     {
 695         if (event.GetKeyCode() == WXK_LEFT ||
 696             event.GetKeyCode() == WXK_RIGHT ||
 697             event.GetKeyCode() == WXK_UP ||
 698             event.GetKeyCode() == WXK_DOWN ||
 699             event.GetKeyCode() == WXK_HOME ||
 700             event.GetKeyCode() == WXK_PAGEUP ||
 701             event.GetKeyCode() == WXK_PAGEDOWN ||
 702             event.GetKeyCode() == WXK_END ||
 703
 704             event.GetKeyCode() == WXK_NUMPAD_LEFT ||
 705             event.GetKeyCode() == WXK_NUMPAD_RIGHT ||
 706             event.GetKeyCode() == WXK_NUMPAD_UP ||
 707             event.GetKeyCode() == WXK_NUMPAD_DOWN ||
 708             event.GetKeyCode() == WXK_NUMPAD_HOME ||
 709             event.GetKeyCode() == WXK_NUMPAD_PAGEUP ||
 710             event.GetKeyCode() == WXK_NUMPAD_PAGEDOWN ||
 711             event.GetKeyCode() == WXK_NUMPAD_END)
 712         {
 713             KeyboardNavigate(event.GetKeyCode(), flags);
 714             return;
 715         }
 716
 717         long keycode = event.GetKeyCode();
 718         switch ( keycode )
 719         {
 720             case WXK_ESCAPE:
 721             case WXK_START:
 722             case WXK_LBUTTON:
 723             case WXK_RBUTTON:
 724             case WXK_CANCEL:
 725             case WXK_MBUTTON:
 726             case WXK_CLEAR:
 727             case WXK_SHIFT:
 728             case WXK_ALT:
 729             case WXK_CONTROL:
 730             case WXK_MENU:
 731             case WXK_PAUSE:
 732             case WXK_CAPITAL:
 733             case WXK_END:
 734             case WXK_HOME:
 735             case WXK_LEFT:
 736             case WXK_UP:
 737             case WXK_RIGHT:
 738             case WXK_DOWN:
 739             case WXK_SELECT:
 740             case WXK_PRINT:
 741             case WXK_EXECUTE:
 742             case WXK_SNAPSHOT:
 743             case WXK_INSERT:
 744             case WXK_HELP:
 745             case WXK_F1:
 746             case WXK_F2:
 747             case WXK_F3:
 748             case WXK_F4:
 749             case WXK_F5:
 750             case WXK_F6:
 751             case WXK_F7:
 752             case WXK_F8:
 753             case WXK_F9:
 754             case WXK_F10:
 755             case WXK_F11:
 756             case WXK_F12:
 757             case WXK_F13:
 758             case WXK_F14:
 759             case WXK_F15:
 760             case WXK_F16:
 761             case WXK_F17:
 762             case WXK_F18:
 763             case WXK_F19:
 764             case WXK_F20:
 765             case WXK_F21:
 766             case WXK_F22:
 767             case WXK_F23:
 768             case WXK_F24:
 769             case WXK_NUMLOCK:
 770             case WXK_SCROLL:
 771             case WXK_PAGEUP:
 772             case WXK_PAGEDOWN:
 773             case WXK_NUMPAD_F1:
 774             case WXK_NUMPAD_F2:
 775             case WXK_NUMPAD_F3:
 776             case WXK_NUMPAD_F4:
 777             case WXK_NUMPAD_HOME:
 778             case WXK_NUMPAD_LEFT:
 779             case WXK_NUMPAD_UP:
 780             case WXK_NUMPAD_RIGHT:
 781             case WXK_NUMPAD_DOWN:
 782             case WXK_NUMPAD_PAGEUP:
 783             case WXK_NUMPAD_PAGEDOWN:
 784             case WXK_NUMPAD_END:
 785             case WXK_NUMPAD_BEGIN:
 786             case WXK_NUMPAD_INSERT:
 787             case WXK_NUMPAD_DELETE:
 788             case WXK_WINDOWS_LEFT:
 789             {
 790                 return;
 791             }
 792             default:
 793             {
 794             }
 795         }
 796
 797         // Must process this before translation, otherwise it's translated into a WXK_DELETE event.
 798         if (event.CmdDown() && event.GetKeyCode() == WXK_BACK)
 799         {
 800             BeginBatchUndo(_("Delete Text"));
 801
 802             long newPos = m_caretPosition;
 803
 804             bool processed = DeleteSelectedContent(& newPos);
 805
 806             // Submit range in character positions, which are greater than caret positions,
 807             // so subtract 1 for deleted character and add 1 for conversion to character position.
 808             if (newPos > -1)
 809             {
 810                 if (event.CmdDown())
 811                 {
 812                     long pos = wxRichTextCtrl::FindNextWordPosition(-1);
 813                     if (pos < newPos)
 814                     {
 815                         GetBuffer().DeleteRangeWithUndo(wxRichTextRange(pos+1, newPos), this);
 816                         processed = true;
 817                     }
 818                 }
 819
 820                 if (!processed)
 821                     GetBuffer().DeleteRangeWithUndo(wxRichTextRange(newPos, newPos), this);
 822             }
 823
 824             EndBatchUndo();
 825
 826             if (GetLastPosition() == -1)
 827             {
 828                 GetBuffer().Reset();
 829
 830                 m_caretPosition = -1;
 831                 PositionCaret();
 832                 SetDefaultStyleToCursorStyle();
 833             }
 834
 835             ScrollIntoView(m_caretPosition, WXK_LEFT);
 836
 837             wxRichTextEvent cmdEvent(
 838                 wxEVT_COMMAND_RICHTEXT_DELETE,
 839                 GetId());
 840             cmdEvent.SetEventObject(this);
 841             cmdEvent.SetFlags(flags);
 842             cmdEvent.SetPosition(m_caretPosition+1);
 843             GetEventHandler()->ProcessEvent(cmdEvent);
 844
 845             Update();
 846         }
 847         else
 848             event.Skip();
 849
 850         return;
 851     }
 852
 853     // all the other keys modify the controls contents which shouldn't be
 854     // possible if we're read-only
 855     if ( !IsEditable() )
 856     {
 857         event.Skip();
 858         return;
 859     }
 860
 861     if (event.GetKeyCode() == WXK_RETURN)
 862     {
 863         BeginBatchUndo(_("Insert Text"));
 864
 865         long newPos = m_caretPosition;
 866
 867         DeleteSelectedContent(& newPos);
 868
 869         if (event.ShiftDown())
 870         {
 871             wxString text;
 872             text = wxRichTextLineBreakChar;
 873             GetBuffer().InsertTextWithUndo(newPos+1, text, this);
 874             m_caretAtLineStart = true;
 875             PositionCaret();
 876         }
 877         else
 878             GetBuffer().InsertNewlineWithUndo(newPos+1, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE|wxRICHTEXT_INSERT_INTERACTIVE);
 879
 880         EndBatchUndo();
 881         SetDefaultStyleToCursorStyle();
 882
 883         ScrollIntoView(m_caretPosition, WXK_RIGHT);
 884
 885         wxRichTextEvent cmdEvent(
 886             wxEVT_COMMAND_RICHTEXT_RETURN,
 887             GetId());
 888         cmdEvent.SetEventObject(this);
 889         cmdEvent.SetFlags(flags);
 890         cmdEvent.SetPosition(newPos+1);
 891
 892         if (!GetEventHandler()->ProcessEvent(cmdEvent))
 893         {
 894             // Generate conventional event
 895             wxCommandEvent textEvent(wxEVT_COMMAND_TEXT_ENTER, GetId());
 896             InitCommandEvent(textEvent);
 897
 898             GetEventHandler()->ProcessEvent(textEvent);
 899         }
 900         Update();
 901     }
 902     else if (event.GetKeyCode() == WXK_BACK)
 903     {
 904         BeginBatchUndo(_("Delete Text"));
 905
 906         long newPos = m_caretPosition;
 907
 908         bool processed = DeleteSelectedContent(& newPos);
 909
 910         // Submit range in character positions, which are greater than caret positions,
 911         // so subtract 1 for deleted character and add 1 for conversion to character position.
 912         if (newPos > -1)
 913         {
 914             if (event.CmdDown())
 915             {
 916                 long pos = wxRichTextCtrl::FindNextWordPosition(-1);
 917                 if (pos < newPos)
 918                 {
 919                     GetBuffer().DeleteRangeWithUndo(wxRichTextRange(pos+1, newPos), this);
 920                     processed = true;
 921                 }
 922             }
 923
 924             if (!processed)
 925                 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(newPos, newPos), this);
 926         }
 927
 928         EndBatchUndo();
 929
 930         if (GetLastPosition() == -1)
 931         {
 932             GetBuffer().Reset();
 933
 934             m_caretPosition = -1;
 935             PositionCaret();
 936             SetDefaultStyleToCursorStyle();
 937         }
 938
 939         ScrollIntoView(m_caretPosition, WXK_LEFT);
 940
 941         wxRichTextEvent cmdEvent(
 942             wxEVT_COMMAND_RICHTEXT_DELETE,
 943             GetId());
 944         cmdEvent.SetEventObject(this);
 945         cmdEvent.SetFlags(flags);
 946         cmdEvent.SetPosition(m_caretPosition+1);
 947         GetEventHandler()->ProcessEvent(cmdEvent);
 948
 949         Update();
 950     }
 951     else if (event.GetKeyCode() == WXK_DELETE)
 952     {
 953         BeginBatchUndo(_("Delete Text"));
 954
 955         long newPos = m_caretPosition;
 956
 957         bool processed = DeleteSelectedContent(& newPos);
 958
 959         // Submit range in character positions, which are greater than caret positions,
 960         if (newPos < GetBuffer().GetRange().GetEnd()+1)
 961         {
 962             if (event.CmdDown())
 963             {
 964                 long pos = wxRichTextCtrl::FindNextWordPosition(1);
 965                 if (pos != -1 && (pos > newPos))
 966                 {
 967                     GetBuffer().DeleteRangeWithUndo(wxRichTextRange(newPos+1, pos), this);
 968                     processed = true;
 969                 }
 970             }
 971
 972             if (!processed)
 973                 GetBuffer().DeleteRangeWithUndo(wxRichTextRange(newPos+1, newPos+1), this);
 974         }
 975
 976         EndBatchUndo();
 977
 978         if (GetLastPosition() == -1)
 979         {
 980             GetBuffer().Reset();
 981
 982             m_caretPosition = -1;
 983             PositionCaret();
 984             SetDefaultStyleToCursorStyle();
 985         }
 986
 987         wxRichTextEvent cmdEvent(
 988             wxEVT_COMMAND_RICHTEXT_DELETE,
 989             GetId());
 990         cmdEvent.SetEventObject(this);
 991         cmdEvent.SetFlags(flags);
 992         cmdEvent.SetPosition(m_caretPosition+1);
 993         GetEventHandler()->ProcessEvent(cmdEvent);
 994
 995         Update();
 996     }
 997     else
 998     {
 999         long keycode = event.GetKeyCode();
1000         switch ( keycode )
1001         {
1002             case WXK_ESCAPE:
1003             {
1004                 event.Skip();
1005                 return;
1006             }
1007
1008             default:
1009             {
1010 #ifdef __WXMAC__
1011                 if (event.CmdDown())
1012 #else
1013                 // Fixes AltGr+key with European input languages on Windows
1014                 if ((event.CmdDown() && !event.AltDown()) || (event.AltDown() && !event.CmdDown()))
1015 #endif
1016                 {
1017                     event.Skip();
1018                     return;
1019                 }
1020
1021                 wxRichTextEvent cmdEvent(
1022                     wxEVT_COMMAND_RICHTEXT_CHARACTER,
1023                     GetId());
1024                 cmdEvent.SetEventObject(this);
1025                 cmdEvent.SetFlags(flags);
1026 #if wxUSE_UNICODE
1027                 cmdEvent.SetCharacter(event.GetUnicodeKey());
1028 #else
1029                 cmdEvent.SetCharacter((wxChar) keycode);
1030 #endif
1031                 cmdEvent.SetPosition(m_caretPosition+1);
1032
1033                 if (keycode == wxT('\t'))
1034                 {
1035                     // See if we need to promote or demote the selection or paragraph at the cursor
1036                     // position, instead of inserting a tab.
1037                     long pos = GetAdjustedCaretPosition(GetCaretPosition());
1038                     wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(pos);
1039                     if (para && para->GetRange().GetStart() == pos && para->GetAttributes().HasListStyleName())
1040                     {
1041                         wxRichTextRange range;
1042                         if (HasSelection())
1043                             range = GetSelectionRange();
1044                         else
1045                             range = para->GetRange().FromInternal();
1046
1047                         int promoteBy = event.ShiftDown() ? 1 : -1;
1048
1049                         PromoteList(promoteBy, range, NULL);
1050
1051                         GetEventHandler()->ProcessEvent(cmdEvent);
1052
1053                         return;
1054                     }
1055                 }
1056
1057                 BeginBatchUndo(_("Insert Text"));
1058
1059                 long newPos = m_caretPosition;
1060                 DeleteSelectedContent(& newPos);
1061
1062 #if wxUSE_UNICODE
1063                 wxString str = event.GetUnicodeKey();
1064 #else
1065                 wxString str = (wxChar) event.GetKeyCode();
1066 #endif
1067                 GetBuffer().InsertTextWithUndo(newPos+1, str, this, 0);
1068
1069                 EndBatchUndo();
1070
1071                 SetDefaultStyleToCursorStyle();
1072                 ScrollIntoView(m_caretPosition, WXK_RIGHT);
1073
1074                 GetEventHandler()->ProcessEvent(cmdEvent);
1075
1076                 Update();
1077             }
1078         }
1079     }
1080 }
1081
1082 /// Delete content if there is a selection, e.g. when pressing a key.
1083 bool wxRichTextCtrl::DeleteSelectedContent(long* newPos)
1084 {
1085     if (HasSelection())
1086     {
1087         long pos = m_selectionRange.GetStart();
1088         GetBuffer().DeleteRangeWithUndo(m_selectionRange, this);
1089         m_selectionRange.SetRange(-2, -2);
1090
1091         if (newPos)
1092             *newPos = pos-1;
1093         return true;
1094     }
1095     else
1096         return false;
1097 }
1098
1099 /// Keyboard navigation
1100
1101 /*
1102
1103 Left:       left one character
1104 Right:      right one character
1105 Up:         up one line
1106 Down:       down one line
1107 Ctrl-Left:  left one word
1108 Ctrl-Right: right one word
1109 Ctrl-Up:    previous paragraph start
1110 Ctrl-Down:  next start of paragraph
1111 Home:       start of line
1112 End:        end of line
1113 Ctrl-Home:  start of document
1114 Ctrl-End:   end of document
1115 Page-Up:    Up a screen
1116 Page-Down:  Down a screen
1117
1118 Maybe:
1119
1120 Ctrl-Alt-PgUp: Start of window
1121 Ctrl-Alt-PgDn: End of window
1122 F8:         Start selection mode
1123 Esc:        End selection mode
1124
1125 Adding Shift does the above but starts/extends selection.
1126
1127
1128  */
1129
1130 bool wxRichTextCtrl::KeyboardNavigate(int keyCode, int flags)
1131 {
1132     bool success = false;
1133
1134     if (keyCode == WXK_RIGHT || keyCode == WXK_NUMPAD_RIGHT)
1135     {
1136         if (flags & wxRICHTEXT_CTRL_DOWN)
1137             success = WordRight(1, flags);
1138         else
1139             success = MoveRight(1, flags);
1140     }
1141     else if (keyCode == WXK_LEFT || keyCode == WXK_NUMPAD_LEFT)
1142     {
1143         if (flags & wxRICHTEXT_CTRL_DOWN)
1144             success = WordLeft(1, flags);
1145         else
1146             success = MoveLeft(1, flags);
1147     }
1148     else if (keyCode == WXK_UP || keyCode == WXK_NUMPAD_UP)
1149     {
1150         if (flags & wxRICHTEXT_CTRL_DOWN)
1151             success = MoveToParagraphStart(flags);
1152         else
1153             success = MoveUp(1, flags);
1154     }
1155     else if (keyCode == WXK_DOWN || keyCode == WXK_NUMPAD_DOWN)
1156     {
1157         if (flags & wxRICHTEXT_CTRL_DOWN)
1158             success = MoveToParagraphEnd(flags);
1159         else
1160             success = MoveDown(1, flags);
1161     }
1162     else if (keyCode == WXK_PAGEUP || keyCode == WXK_NUMPAD_PAGEUP)
1163     {
1164         success = PageUp(1, flags);
1165     }
1166     else if (keyCode == WXK_PAGEDOWN || keyCode == WXK_NUMPAD_PAGEDOWN)
1167     {
1168         success = PageDown(1, flags);
1169     }
1170     else if (keyCode == WXK_HOME || keyCode == WXK_NUMPAD_HOME)
1171     {
1172         if (flags & wxRICHTEXT_CTRL_DOWN)
1173             success = MoveHome(flags);
1174         else
1175             success = MoveToLineStart(flags);
1176     }
1177     else if (keyCode == WXK_END || keyCode == WXK_NUMPAD_END)
1178     {
1179         if (flags & wxRICHTEXT_CTRL_DOWN)
1180             success = MoveEnd(flags);
1181         else
1182             success = MoveToLineEnd(flags);
1183     }
1184
1185     if (success)
1186     {
1187         ScrollIntoView(m_caretPosition, keyCode);
1188         SetDefaultStyleToCursorStyle();
1189     }
1190
1191     return success;
1192 }
1193
1194 /// Extend the selection. Selections are in caret positions.
1195 bool wxRichTextCtrl::ExtendSelection(long oldPos, long newPos, int flags)
1196 {
1197     if (flags & wxRICHTEXT_SHIFT_DOWN)
1198     {
1199         if (oldPos == newPos)
1200             return false;
1201
1202         wxRichTextRange oldSelection = m_selectionRange;
1203
1204         // If not currently selecting, start selecting
1205         if (m_selectionRange.GetStart() == -2)
1206         {
1207             m_selectionAnchor = oldPos;
1208
1209             if (oldPos > newPos)
1210                 m_selectionRange.SetRange(newPos+1, oldPos);
1211             else
1212                 m_selectionRange.SetRange(oldPos+1, newPos);
1213         }
1214         else
1215         {
1216             // Always ensure that the selection range start is greater than
1217             // the end.
1218             if (newPos > m_selectionAnchor)
1219                 m_selectionRange.SetRange(m_selectionAnchor+1, newPos);
1220             else if (newPos == m_selectionAnchor)
1221                 m_selectionRange = wxRichTextRange(-2, -2);
1222             else
1223                 m_selectionRange.SetRange(newPos+1, m_selectionAnchor);
1224         }
1225
1226         RefreshForSelectionChange(oldSelection, m_selectionRange);
1227
1228         if (m_selectionRange.GetStart() > m_selectionRange.GetEnd())
1229         {
1230             wxLogDebug(wxT("Strange selection range"));
1231         }
1232
1233         return true;
1234     }
1235     else
1236         return false;
1237 }
1238
1239 /// Scroll into view, returning true if we scrolled.
1240 /// This takes a _caret_ position.
1241 bool wxRichTextCtrl::ScrollIntoView(long position, int keyCode)
1242 {
1243     wxRichTextLine* line = GetVisibleLineForCaretPosition(position);
1244
1245     if (!line)
1246         return false;
1247
1248     int ppuX, ppuY;
1249     GetScrollPixelsPerUnit(& ppuX, & ppuY);
1250
1251     int startXUnits, startYUnits;
1252     GetViewStart(& startXUnits, & startYUnits);
1253     int startY = startYUnits * ppuY;
1254
1255     int sx = 0, sy = 0;
1256     GetVirtualSize(& sx, & sy);
1257     int sxUnits = 0;
1258     int syUnits = 0;
1259     if (ppuY != 0)
1260         syUnits = sy/ppuY;
1261
1262     wxRect rect = line->GetRect();
1263
1264     bool scrolled = false;
1265
1266     wxSize clientSize = GetClientSize();
1267     clientSize.y -= GetBuffer().GetBottomMargin();
1268
1269     if (GetWindowStyle() & wxRE_CENTRE_CARET)
1270     {
1271         int y = rect.y - GetClientSize().y/2;
1272         int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1273         if (y >= 0 && (y + clientSize.y) < GetBuffer().GetCachedSize().y)
1274         {
1275             if (startYUnits != yUnits)
1276             {
1277                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1278                 scrolled = true;
1279             }
1280 #if !wxRICHTEXT_USE_OWN_CARET
1281             if (scrolled)
1282 #endif
1283                 PositionCaret();
1284
1285             return scrolled;
1286         }
1287     }
1288
1289     // Going down
1290     if (keyCode == WXK_DOWN || keyCode == WXK_NUMPAD_DOWN ||
1291         keyCode == WXK_RIGHT || keyCode == WXK_NUMPAD_RIGHT ||
1292         keyCode == WXK_END || keyCode == WXK_NUMPAD_END ||
1293         keyCode == WXK_PAGEDOWN || keyCode == WXK_NUMPAD_PAGEDOWN)
1294     {
1295         if ((rect.y + rect.height) > (clientSize.y + startY))
1296         {
1297             // Make it scroll so this item is at the bottom
1298             // of the window
1299             int y = rect.y - (clientSize.y - rect.height);
1300             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1301
1302             // If we're still off the screen, scroll another line down
1303             if ((rect.y + rect.height) > (clientSize.y + (yUnits*ppuY)))
1304                 yUnits ++;
1305
1306             if (startYUnits != yUnits)
1307             {
1308                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1309                 scrolled = true;
1310             }
1311         }
1312         else if (rect.y < (startY + GetBuffer().GetTopMargin()))
1313         {
1314             // Make it scroll so this item is at the top
1315             // of the window
1316             int y = rect.y - GetBuffer().GetTopMargin();
1317             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1318
1319             if (startYUnits != yUnits)
1320             {
1321                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1322                 scrolled = true;
1323             }
1324         }
1325     }
1326     // Going up
1327     else if (keyCode == WXK_UP  || keyCode == WXK_NUMPAD_UP ||
1328              keyCode == WXK_LEFT || keyCode == WXK_NUMPAD_LEFT ||
1329              keyCode == WXK_HOME || keyCode == WXK_NUMPAD_HOME ||
1330              keyCode == WXK_PAGEUP || keyCode == WXK_NUMPAD_PAGEUP )
1331     {
1332         if (rect.y < (startY + GetBuffer().GetBottomMargin()))
1333         {
1334             // Make it scroll so this item is at the top
1335             // of the window
1336             int y = rect.y - GetBuffer().GetTopMargin();
1337             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1338
1339             if (startYUnits != yUnits)
1340             {
1341                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1342                 scrolled = true;
1343             }
1344         }
1345         else if ((rect.y + rect.height) > (clientSize.y + startY))
1346         {
1347             // Make it scroll so this item is at the bottom
1348             // of the window
1349             int y = rect.y - (clientSize.y - rect.height);
1350             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
1351
1352             // If we're still off the screen, scroll another line down
1353             if ((rect.y + rect.height) > (clientSize.y + (yUnits*ppuY)))
1354                 yUnits ++;
1355
1356             if (startYUnits != yUnits)
1357             {
1358                 SetScrollbars(ppuX, ppuY, sxUnits, syUnits, 0, yUnits);
1359                 scrolled = true;
1360             }
1361         }
1362     }
1363
1364 #if !wxRICHTEXT_USE_OWN_CARET
1365     if (scrolled)
1366 #endif
1367         PositionCaret();
1368
1369     return scrolled;
1370 }
1371
1372 /// Is the given position visible on the screen?
1373 bool wxRichTextCtrl::IsPositionVisible(long pos) const
1374 {
1375     wxRichTextLine* line = GetVisibleLineForCaretPosition(pos-1);
1376
1377     if (!line)
1378         return false;
1379
1380     int ppuX, ppuY;
1381     GetScrollPixelsPerUnit(& ppuX, & ppuY);
1382
1383     int startX, startY;
1384     GetViewStart(& startX, & startY);
1385     startX = 0;
1386     startY = startY * ppuY;
1387
1388     wxRect rect = line->GetRect();
1389     wxSize clientSize = GetClientSize();
1390     clientSize.y -= GetBuffer().GetBottomMargin();
1391
1392     return (rect.GetBottom() > (startY + GetBuffer().GetTopMargin())) && (rect.GetTop() < (startY + clientSize.y));
1393 }
1394
1395 void wxRichTextCtrl::SetCaretPosition(long position, bool showAtLineStart)
1396 {
1397     m_caretPosition = position;
1398     m_caretAtLineStart = showAtLineStart;
1399 }
1400
1401 /// Move caret one visual step forward: this may mean setting a flag
1402 /// and keeping the same position if we're going from the end of one line
1403 /// to the start of the next, which may be the exact same caret position.
1404 void wxRichTextCtrl::MoveCaretForward(long oldPosition)
1405 {
1406     wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(oldPosition);
1407
1408     // Only do the check if we're not at the end of the paragraph (where things work OK
1409     // anyway)
1410     if (para && (oldPosition != para->GetRange().GetEnd() - 1))
1411     {
1412         wxRichTextLine* line = GetBuffer().GetLineAtPosition(oldPosition);
1413
1414         if (line)
1415         {
1416             wxRichTextRange lineRange = line->GetAbsoluteRange();
1417
1418             // We're at the end of a line. See whether we need to
1419             // stay at the same actual caret position but change visual
1420             // position, or not.
1421             if (oldPosition == lineRange.GetEnd())
1422             {
1423                 if (m_caretAtLineStart)
1424                 {
1425                     // We're already at the start of the line, so actually move on now.
1426                     m_caretPosition = oldPosition + 1;
1427                     m_caretAtLineStart = false;
1428                 }
1429                 else
1430                 {
1431                     // We're showing at the end of the line, so keep to
1432                     // the same position but indicate that we're to show
1433                     // at the start of the next line.
1434                     m_caretPosition = oldPosition;
1435                     m_caretAtLineStart = true;
1436                 }
1437                 SetDefaultStyleToCursorStyle();
1438                 return;
1439             }
1440         }
1441     }
1442     m_caretPosition ++;
1443     SetDefaultStyleToCursorStyle();
1444 }
1445
1446 /// Move caret one visual step backward: this may mean setting a flag
1447 /// and keeping the same position if we're going from the end of one line
1448 /// to the start of the next, which may be the exact same caret position.
1449 void wxRichTextCtrl::MoveCaretBack(long oldPosition)
1450 {
1451     wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(oldPosition);
1452
1453     // Only do the check if we're not at the start of the paragraph (where things work OK
1454     // anyway)
1455     if (para && (oldPosition != para->GetRange().GetStart()))
1456     {
1457         wxRichTextLine* line = GetBuffer().GetLineAtPosition(oldPosition);
1458
1459         if (line)
1460         {
1461             wxRichTextRange lineRange = line->GetAbsoluteRange();
1462
1463             // We're at the start of a line. See whether we need to
1464             // stay at the same actual caret position but change visual
1465             // position, or not.
1466             if (oldPosition == lineRange.GetStart())
1467             {
1468                 m_caretPosition = oldPosition-1;
1469                 m_caretAtLineStart = true;
1470                 return;
1471             }
1472             else if (oldPosition == lineRange.GetEnd())
1473             {
1474                 if (m_caretAtLineStart)
1475                 {
1476                     // We're at the start of the line, so keep the same caret position
1477                     // but clear the start-of-line flag.
1478                     m_caretPosition = oldPosition;
1479                     m_caretAtLineStart = false;
1480                 }
1481                 else
1482                 {
1483                     // We're showing at the end of the line, so go back
1484                     // to the previous character position.
1485                     m_caretPosition = oldPosition - 1;
1486                 }
1487                 SetDefaultStyleToCursorStyle();
1488                 return;
1489             }
1490         }
1491     }
1492     m_caretPosition --;
1493     SetDefaultStyleToCursorStyle();
1494 }
1495
1496 /// Move right
1497 bool wxRichTextCtrl::MoveRight(int noPositions, int flags)
1498 {
1499     long endPos = GetBuffer().GetRange().GetEnd();
1500
1501     if (m_caretPosition + noPositions < endPos)
1502     {
1503         long oldPos = m_caretPosition;
1504         long newPos = m_caretPosition + noPositions;
1505
1506         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1507         if (!extendSel)
1508             SelectNone();
1509
1510         // Determine by looking at oldPos and m_caretPosition whether
1511         // we moved from the end of a line to the start of the next line, in which case
1512         // we want to adjust the caret position such that it is positioned at the
1513         // start of the next line, rather than jumping past the first character of the
1514         // line.
1515         if (noPositions == 1 && !extendSel)
1516             MoveCaretForward(oldPos);
1517         else
1518             SetCaretPosition(newPos);
1519
1520         PositionCaret();
1521         SetDefaultStyleToCursorStyle();
1522
1523         return true;
1524     }
1525     else
1526         return false;
1527 }
1528
1529 /// Move left
1530 bool wxRichTextCtrl::MoveLeft(int noPositions, int flags)
1531 {
1532     long startPos = -1;
1533
1534     if (m_caretPosition > startPos - noPositions + 1)
1535     {
1536         long oldPos = m_caretPosition;
1537         long newPos = m_caretPosition - noPositions;
1538         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1539         if (!extendSel)
1540             SelectNone();
1541
1542         if (noPositions == 1 && !extendSel)
1543             MoveCaretBack(oldPos);
1544         else
1545             SetCaretPosition(newPos);
1546
1547         PositionCaret();
1548         SetDefaultStyleToCursorStyle();
1549
1550         return true;
1551     }
1552     else
1553         return false;
1554 }
1555
1556 /// Move up
1557 bool wxRichTextCtrl::MoveUp(int noLines, int flags)
1558 {
1559     return MoveDown(- noLines, flags);
1560 }
1561
1562 /// Move up
1563 bool wxRichTextCtrl::MoveDown(int noLines, int flags)
1564 {
1565     if (!GetCaret())
1566         return false;
1567
1568     long lineNumber = GetBuffer().GetVisibleLineNumber(m_caretPosition, true, m_caretAtLineStart);
1569     wxPoint pt = GetCaret()->GetPosition();
1570     long newLine = lineNumber + noLines;
1571
1572     if (lineNumber != -1)
1573     {
1574         if (noLines > 0)
1575         {
1576             long lastLine = GetBuffer().GetVisibleLineNumber(GetBuffer().GetRange().GetEnd());
1577
1578             if (newLine > lastLine)
1579                 return false;
1580         }
1581         else
1582         {
1583             if (newLine < 0)
1584                 return false;
1585         }
1586     }
1587
1588     wxRichTextLine* lineObj = GetBuffer().GetLineForVisibleLineNumber(newLine);
1589     if (lineObj)
1590     {
1591         pt.y = lineObj->GetAbsolutePosition().y + 2;
1592     }
1593     else
1594         return false;
1595
1596     long newPos = 0;
1597     wxClientDC dc(this);
1598     PrepareDC(dc);
1599     dc.SetFont(GetFont());
1600
1601     int hitTest = GetBuffer().HitTest(dc, pt, newPos);
1602
1603     if (hitTest != wxRICHTEXT_HITTEST_NONE)
1604     {
1605         // If end of previous line, and hitTest is wxRICHTEXT_HITTEST_BEFORE,
1606         // we want to be at the end of the last line but with m_caretAtLineStart set to true,
1607         // so we view the caret at the start of the line.
1608         bool caretLineStart = false;
1609         if (hitTest & wxRICHTEXT_HITTEST_BEFORE)
1610         {
1611             wxRichTextLine* thisLine = GetBuffer().GetLineAtPosition(newPos-1);
1612             wxRichTextRange lineRange;
1613             if (thisLine)
1614                 lineRange = thisLine->GetAbsoluteRange();
1615
1616             if (thisLine && (newPos-1) == lineRange.GetEnd())
1617             {
1618                 newPos --;
1619                 caretLineStart = true;
1620             }
1621             else
1622             {
1623                 wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(newPos);
1624                 if (para && para->GetRange().GetStart() == newPos)
1625                     newPos --;
1626             }
1627         }
1628
1629         long newSelEnd = newPos;
1630
1631         bool extendSel = ExtendSelection(m_caretPosition, newSelEnd, flags);
1632         if (!extendSel)
1633             SelectNone();
1634
1635         SetCaretPosition(newPos, caretLineStart);
1636         PositionCaret();
1637         SetDefaultStyleToCursorStyle();
1638
1639         return true;
1640     }
1641
1642     return false;
1643 }
1644
1645 /// Move to the end of the paragraph
1646 bool wxRichTextCtrl::MoveToParagraphEnd(int flags)
1647 {
1648     wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(m_caretPosition, true);
1649     if (para)
1650     {
1651         long newPos = para->GetRange().GetEnd() - 1;
1652         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1653         if (!extendSel)
1654             SelectNone();
1655
1656         SetCaretPosition(newPos);
1657         PositionCaret();
1658         SetDefaultStyleToCursorStyle();
1659
1660         return true;
1661     }
1662
1663     return false;
1664 }
1665
1666 /// Move to the start of the paragraph
1667 bool wxRichTextCtrl::MoveToParagraphStart(int flags)
1668 {
1669     wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(m_caretPosition, true);
1670     if (para)
1671     {
1672         long newPos = para->GetRange().GetStart() - 1;
1673         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1674         if (!extendSel)
1675             SelectNone();
1676
1677         SetCaretPosition(newPos);
1678         PositionCaret();
1679         SetDefaultStyleToCursorStyle();
1680
1681         return true;
1682     }
1683
1684     return false;
1685 }
1686
1687 /// Move to the end of the line
1688 bool wxRichTextCtrl::MoveToLineEnd(int flags)
1689 {
1690     wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
1691
1692     if (line)
1693     {
1694         wxRichTextRange lineRange = line->GetAbsoluteRange();
1695         long newPos = lineRange.GetEnd();
1696         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1697         if (!extendSel)
1698             SelectNone();
1699
1700         SetCaretPosition(newPos);
1701         PositionCaret();
1702         SetDefaultStyleToCursorStyle();
1703
1704         return true;
1705     }
1706
1707     return false;
1708 }
1709
1710 /// Move to the start of the line
1711 bool wxRichTextCtrl::MoveToLineStart(int flags)
1712 {
1713     wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
1714     if (line)
1715     {
1716         wxRichTextRange lineRange = line->GetAbsoluteRange();
1717         long newPos = lineRange.GetStart()-1;
1718
1719         bool extendSel = ExtendSelection(m_caretPosition, newPos, flags);
1720         if (!extendSel)
1721             SelectNone();
1722
1723         wxRichTextParagraph* para = GetBuffer().GetParagraphForLine(line);
1724
1725         SetCaretPosition(newPos, para->GetRange().GetStart() != lineRange.GetStart());
1726         PositionCaret();
1727         SetDefaultStyleToCursorStyle();
1728
1729         return true;
1730     }
1731
1732     return false;
1733 }
1734
1735 /// Move to the start of the buffer
1736 bool wxRichTextCtrl::MoveHome(int flags)
1737 {
1738     if (m_caretPosition != -1)
1739     {
1740         bool extendSel = ExtendSelection(m_caretPosition, -1, flags);
1741         if (!extendSel)
1742             SelectNone();
1743
1744         SetCaretPosition(-1);
1745         PositionCaret();
1746         SetDefaultStyleToCursorStyle();
1747
1748         return true;
1749     }
1750     else
1751         return false;
1752 }
1753
1754 /// Move to the end of the buffer
1755 bool wxRichTextCtrl::MoveEnd(int flags)
1756 {
1757     long endPos = GetBuffer().GetRange().GetEnd()-1;
1758
1759     if (m_caretPosition != endPos)
1760     {
1761         bool extendSel = ExtendSelection(m_caretPosition, endPos, flags);
1762         if (!extendSel)
1763             SelectNone();
1764
1765         SetCaretPosition(endPos);
1766         PositionCaret();
1767         SetDefaultStyleToCursorStyle();
1768
1769         return true;
1770     }
1771     else
1772         return false;
1773 }
1774
1775 /// Move noPages pages up
1776 bool wxRichTextCtrl::PageUp(int noPages, int flags)
1777 {
1778     return PageDown(- noPages, flags);
1779 }
1780
1781 /// Move noPages pages down
1782 bool wxRichTextCtrl::PageDown(int noPages, int flags)
1783 {
1784     // Calculate which line occurs noPages * screen height further down.
1785     wxRichTextLine* line = GetVisibleLineForCaretPosition(m_caretPosition);
1786     if (line)
1787     {
1788         wxSize clientSize = GetClientSize();
1789         int newY = line->GetAbsolutePosition().y + noPages*clientSize.y;
1790
1791         wxRichTextLine* newLine = GetBuffer().GetLineAtYPosition(newY);
1792         if (newLine)
1793         {
1794             wxRichTextRange lineRange = newLine->GetAbsoluteRange();
1795             long pos = lineRange.GetStart()-1;
1796             if (pos != m_caretPosition)
1797             {
1798                 wxRichTextParagraph* para = GetBuffer().GetParagraphForLine(newLine);
1799
1800                 bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
1801                 if (!extendSel)
1802                     SelectNone();
1803
1804                 SetCaretPosition(pos, para->GetRange().GetStart() != lineRange.GetStart());
1805                 PositionCaret();
1806                 SetDefaultStyleToCursorStyle();
1807
1808                 return true;
1809             }
1810         }
1811     }
1812
1813     return false;
1814 }
1815
1816 static bool wxRichTextCtrlIsWhitespace(const wxString& str)
1817 {
1818     return str == wxT(" ") || str == wxT("\t");
1819 }
1820
1821 // Finds the caret position for the next word
1822 long wxRichTextCtrl::FindNextWordPosition(int direction) const
1823 {
1824     long endPos = GetBuffer().GetRange().GetEnd();
1825
1826     if (direction > 0)
1827     {
1828         long i = m_caretPosition+1+direction; // +1 for conversion to character pos
1829
1830         // First skip current text to space
1831         while (i < endPos && i > -1)
1832         {
1833             // i is in character, not caret positions
1834             wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1835             wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1836             if (line && (i == line->GetAbsoluteRange().GetEnd()))
1837             {
1838                 break;
1839             }
1840             else if (!wxRichTextCtrlIsWhitespace(text) && !text.empty())
1841                 i += direction;
1842             else
1843             {
1844                 break;
1845             }
1846         }
1847         while (i < endPos && i > -1)
1848         {
1849             // i is in character, not caret positions
1850             wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1851             wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1852             if (line && (i == line->GetAbsoluteRange().GetEnd()))
1853                 return wxMax(-1, i);
1854
1855             if (text.empty()) // End of paragraph, or maybe an image
1856                 return wxMax(-1, i - 1);
1857             else if (wxRichTextCtrlIsWhitespace(text) || text.empty())
1858                 i += direction;
1859             else
1860             {
1861                 // Convert to caret position
1862                 return wxMax(-1, i - 1);
1863             }
1864         }
1865         if (i >= endPos)
1866             return endPos-1;
1867         return i-1;
1868     }
1869     else
1870     {
1871         long i = m_caretPosition;
1872
1873         // First skip white space
1874         while (i < endPos && i > -1)
1875         {
1876             // i is in character, not caret positions
1877             wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1878             wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1879
1880             if (text.empty() || (line && (i == line->GetAbsoluteRange().GetStart()))) // End of paragraph, or maybe an image
1881                 break;
1882             else if (wxRichTextCtrlIsWhitespace(text) || text.empty())
1883                 i += direction;
1884             else
1885                 break;
1886         }
1887         // Next skip current text to space
1888         while (i < endPos && i > -1)
1889         {
1890             // i is in character, not caret positions
1891             wxString text = GetBuffer().GetTextForRange(wxRichTextRange(i, i));
1892             wxRichTextLine* line = GetBuffer().GetLineAtPosition(i, false);
1893             if (line && line->GetAbsoluteRange().GetStart() == i)
1894                 return i-1;
1895
1896             if (!wxRichTextCtrlIsWhitespace(text) /* && !text.empty() */)
1897                 i += direction;
1898             else
1899             {
1900                 return i;
1901             }
1902         }
1903         if (i < -1)
1904             return -1;
1905         return i;
1906     }
1907 }
1908
1909 /// Move n words left
1910 bool wxRichTextCtrl::WordLeft(int WXUNUSED(n), int flags)
1911 {
1912     long pos = FindNextWordPosition(-1);
1913     if (pos != m_caretPosition)
1914     {
1915         wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(pos, true);
1916
1917         bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
1918         if (!extendSel)
1919             SelectNone();
1920
1921         SetCaretPosition(pos, para->GetRange().GetStart() != pos);
1922         PositionCaret();
1923         SetDefaultStyleToCursorStyle();
1924
1925         return true;
1926     }
1927
1928     return false;
1929 }
1930
1931 /// Move n words right
1932 bool wxRichTextCtrl::WordRight(int WXUNUSED(n), int flags)
1933 {
1934     long pos = FindNextWordPosition(1);
1935     if (pos != m_caretPosition)
1936     {
1937         wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(pos, true);
1938
1939         bool extendSel = ExtendSelection(m_caretPosition, pos, flags);
1940         if (!extendSel)
1941             SelectNone();
1942
1943         SetCaretPosition(pos, para->GetRange().GetStart() != pos);
1944         PositionCaret();
1945         SetDefaultStyleToCursorStyle();
1946
1947         return true;
1948     }
1949
1950     return false;
1951 }
1952
1953 /// Sizing
1954 void wxRichTextCtrl::OnSize(wxSizeEvent& event)
1955 {
1956     // Only do sizing optimization for large buffers
1957     if (GetBuffer().GetRange().GetEnd() > m_delayedLayoutThreshold)
1958     {
1959         m_fullLayoutRequired = true;
1960         m_fullLayoutTime = wxGetLocalTimeMillis();
1961         m_fullLayoutSavedPosition = GetFirstVisiblePosition();
1962         LayoutContent(true /* onlyVisibleRect */);
1963     }
1964     else
1965         GetBuffer().Invalidate(wxRICHTEXT_ALL);
1966
1967 #if wxRICHTEXT_BUFFERED_PAINTING
1968     RecreateBuffer();
1969 #endif
1970
1971     event.Skip();
1972 }
1973
1974
1975 /// Idle-time processing
1976 void wxRichTextCtrl::OnIdle(wxIdleEvent& event)
1977 {
1978 #if wxRICHTEXT_USE_OWN_CARET
1979     if (((wxRichTextCaret*) GetCaret())->GetNeedsUpdate())
1980     {
1981         ((wxRichTextCaret*) GetCaret())->SetNeedsUpdate(false);
1982         PositionCaret();
1983         GetCaret()->Show();
1984     }
1985 #endif
1986
1987     const int layoutInterval = wxRICHTEXT_DEFAULT_LAYOUT_INTERVAL;
1988
1989     if (m_fullLayoutRequired && (wxGetLocalTimeMillis() > (m_fullLayoutTime + layoutInterval)))
1990     {
1991         m_fullLayoutRequired = false;
1992         m_fullLayoutTime = 0;
1993         GetBuffer().Invalidate(wxRICHTEXT_ALL);
1994         ShowPosition(m_fullLayoutSavedPosition);
1995         Refresh(false);
1996     }
1997
1998     if (m_caretPositionForDefaultStyle != -2)
1999     {
2000         // If the caret position has changed, no longer reflect the default style
2001         // in the UI.
2002         if (GetCaretPosition() != m_caretPositionForDefaultStyle)
2003             m_caretPositionForDefaultStyle = -2;
2004     }
2005
2006     event.Skip();
2007 }
2008
2009 /// Scrolling
2010 void wxRichTextCtrl::OnScroll(wxScrollWinEvent& event)
2011 {
2012 #if wxRICHTEXT_USE_OWN_CARET
2013     if (!((wxRichTextCaret*) GetCaret())->GetNeedsUpdate())
2014     {
2015         GetCaret()->Hide();
2016         ((wxRichTextCaret*) GetCaret())->SetNeedsUpdate();
2017     }
2018 #endif
2019
2020     event.Skip();
2021 }
2022
2023 /// Set up scrollbars, e.g. after a resize
2024 void wxRichTextCtrl::SetupScrollbars(bool atTop)
2025 {
2026     if (IsFrozen())
2027         return;
2028
2029     if (GetBuffer().IsEmpty())
2030     {
2031         SetScrollbars(0, 0, 0, 0, 0, 0);
2032         return;
2033     }
2034
2035     // TODO: reimplement scrolling so we scroll by line, not by fixed number
2036     // of pixels. See e.g. wxVScrolledWindow for ideas.
2037     int pixelsPerUnit = 5;
2038     wxSize clientSize = GetClientSize();
2039
2040     int maxHeight = GetBuffer().GetCachedSize().y + GetBuffer().GetTopMargin();
2041
2042     // Round up so we have at least maxHeight pixels
2043     int unitsY = (int) (((float)maxHeight/(float)pixelsPerUnit) + 0.5);
2044
2045     int startX = 0, startY = 0;
2046     if (!atTop)
2047         GetViewStart(& startX, & startY);
2048
2049     int maxPositionX = 0;
2050     int maxPositionY = (int) ((((float)(wxMax((unitsY*pixelsPerUnit) - clientSize.y, 0)))/((float)pixelsPerUnit)) + 0.5);
2051
2052     int newStartX = wxMin(maxPositionX, startX);
2053     int newStartY = wxMin(maxPositionY, startY);
2054
2055     int oldPPUX, oldPPUY;
2056     int oldStartX, oldStartY;
2057     int oldVirtualSizeX = 0, oldVirtualSizeY = 0;
2058     GetScrollPixelsPerUnit(& oldPPUX, & oldPPUY);
2059     GetViewStart(& oldStartX, & oldStartY);
2060     GetVirtualSize(& oldVirtualSizeX, & oldVirtualSizeY);
2061     if (oldPPUY > 0)
2062         oldVirtualSizeY /= oldPPUY;
2063
2064     if (oldPPUX == 0 && oldPPUY == pixelsPerUnit && oldVirtualSizeY == unitsY && oldStartX == newStartX && oldStartY == newStartY)
2065         return;
2066
2067     // Don't set scrollbars if there were none before, and there will be none now.
2068     if (oldPPUY != 0 && (oldVirtualSizeY < clientSize.y) && (unitsY*pixelsPerUnit < clientSize.y))
2069         return;
2070
2071     // Move to previous scroll position if
2072     // possible
2073     SetScrollbars(0, pixelsPerUnit, 0, unitsY, newStartX, newStartY);
2074 }
2075
2076 /// Paint the background
2077 void wxRichTextCtrl::PaintBackground(wxDC& dc)
2078 {
2079     wxColour backgroundColour = GetBackgroundColour();
2080     if (!backgroundColour.Ok())
2081         backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
2082
2083     // Clear the background
2084     dc.SetBrush(wxBrush(backgroundColour));
2085     dc.SetPen(*wxTRANSPARENT_PEN);
2086     wxRect windowRect(GetClientSize());
2087     windowRect.x -= 2; windowRect.y -= 2;
2088     windowRect.width += 4; windowRect.height += 4;
2089
2090     // We need to shift the rectangle to take into account
2091     // scrolling. Converting device to logical coordinates.
2092     CalcUnscrolledPosition(windowRect.x, windowRect.y, & windowRect.x, & windowRect.y);
2093     dc.DrawRectangle(windowRect);
2094 }
2095
2096 #if wxRICHTEXT_BUFFERED_PAINTING
2097 /// Recreate buffer bitmap if necessary
2098 bool wxRichTextCtrl::RecreateBuffer(const wxSize& size)
2099 {
2100     wxSize sz = size;
2101     if (sz == wxDefaultSize)
2102         sz = GetClientSize();
2103
2104     if (sz.x < 1 || sz.y < 1)
2105         return false;
2106
2107     if (!m_bufferBitmap.Ok() || m_bufferBitmap.GetWidth() < sz.x || m_bufferBitmap.GetHeight() < sz.y)
2108         m_bufferBitmap = wxBitmap(sz.x, sz.y);
2109     return m_bufferBitmap.Ok();
2110 }
2111 #endif
2112
2113 // ----------------------------------------------------------------------------
2114 // file IO functions
2115 // ----------------------------------------------------------------------------
2116
2117 bool wxRichTextCtrl::DoLoadFile(const wxString& filename, int fileType)
2118 {
2119     bool success = GetBuffer().LoadFile(filename, (wxRichTextFileType)fileType);
2120     if (success)
2121         m_filename = filename;
2122
2123     DiscardEdits();
2124     SetInsertionPoint(0);
2125     LayoutContent();
2126     PositionCaret();
2127     SetupScrollbars(true);
2128     Refresh(false);
2129     wxTextCtrl::SendTextUpdatedEvent(this);
2130
2131     if (success)
2132         return true;
2133     else
2134     {
2135         wxLogError(_("File couldn't be loaded."));
2136
2137         return false;
2138     }
2139 }
2140
2141 bool wxRichTextCtrl::DoSaveFile(const wxString& filename, int fileType)
2142 {
2143     if (GetBuffer().SaveFile(filename, (wxRichTextFileType)fileType))
2144     {
2145         m_filename = filename;
2146
2147         DiscardEdits();
2148
2149         return true;
2150     }
2151
2152     wxLogError(_("The text couldn't be saved."));
2153
2154     return false;
2155 }
2156
2157 // ----------------------------------------------------------------------------
2158 // wxRichTextCtrl specific functionality
2159 // ----------------------------------------------------------------------------
2160
2161 /// Add a new paragraph of text to the end of the buffer
2162 wxRichTextRange wxRichTextCtrl::AddParagraph(const wxString& text)
2163 {
2164     wxRichTextRange range = GetBuffer().AddParagraph(text);
2165     LayoutContent();
2166     return range;
2167 }
2168
2169 /// Add an image
2170 wxRichTextRange wxRichTextCtrl::AddImage(const wxImage& image)
2171 {
2172     wxRichTextRange range = GetBuffer().AddImage(image);
2173     LayoutContent();
2174     return range;
2175 }
2176
2177 // ----------------------------------------------------------------------------
2178 // selection and ranges
2179 // ----------------------------------------------------------------------------
2180
2181 void wxRichTextCtrl::SelectAll()
2182 {
2183     SetSelection(0, GetLastPosition()+1);
2184     m_selectionAnchor = -1;
2185 }
2186
2187 /// Select none
2188 void wxRichTextCtrl::SelectNone()
2189 {
2190     if (!(GetSelectionRange() == wxRichTextRange(-2, -2)))
2191     {
2192         wxRichTextRange oldSelection = m_selectionRange;
2193
2194         m_selectionRange = wxRichTextRange(-2, -2);
2195
2196         RefreshForSelectionChange(oldSelection, m_selectionRange);
2197     }
2198     m_selectionAnchor = -2;
2199 }
2200
2201 static bool wxIsWordDelimiter(const wxString& text)
2202 {
2203     return !text.IsEmpty() && !wxIsalnum(text[0]);
2204 }
2205
2206 /// Select the word at the given character position
2207 bool wxRichTextCtrl::SelectWord(long position)
2208 {
2209     if (position < 0 || position > GetBuffer().GetRange().GetEnd())
2210         return false;
2211
2212     wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(position);
2213     if (!para)
2214         return false;
2215
2216     if (position == para->GetRange().GetEnd())
2217         position --;
2218
2219     long positionStart = position;
2220     long positionEnd = position;
2221
2222     for (positionStart = position; positionStart >= para->GetRange().GetStart(); positionStart --)
2223     {
2224         wxString text = GetBuffer().GetTextForRange(wxRichTextRange(positionStart, positionStart));
2225         if (wxIsWordDelimiter(text))
2226         {
2227             positionStart ++;
2228             break;
2229         }
2230     }
2231     if (positionStart < para->GetRange().GetStart())
2232         positionStart = para->GetRange().GetStart();
2233
2234     for (positionEnd = position; positionEnd < para->GetRange().GetEnd(); positionEnd ++)
2235     {
2236         wxString text = GetBuffer().GetTextForRange(wxRichTextRange(positionEnd, positionEnd));
2237         if (wxIsWordDelimiter(text))
2238         {
2239             positionEnd --;
2240             break;
2241         }
2242     }
2243     if (positionEnd >= para->GetRange().GetEnd())
2244         positionEnd = para->GetRange().GetEnd();
2245
2246     if (positionEnd < positionStart)
2247         return false;
2248
2249     SetSelection(positionStart, positionEnd+1);
2250
2251     if (positionStart >= 0)
2252     {
2253         MoveCaret(positionStart-1, true);
2254         SetDefaultStyleToCursorStyle();
2255     }
2256
2257     return true;
2258 }
2259
2260 wxString wxRichTextCtrl::GetStringSelection() const
2261 {
2262     long from, to;
2263     GetSelection(&from, &to);
2264
2265     return GetRange(from, to);
2266 }
2267
2268 // ----------------------------------------------------------------------------
2269 // hit testing
2270 // ----------------------------------------------------------------------------
2271
2272 wxTextCtrlHitTestResult
2273 wxRichTextCtrl::HitTest(const wxPoint& pt, wxTextCoord *x, wxTextCoord *y) const
2274 {
2275     // implement in terms of the other overload as the native ports typically
2276     // can get the position and not (x, y) pair directly (although wxUniv
2277     // directly gets x and y -- and so overrides this method as well)
2278     long pos;
2279     wxTextCtrlHitTestResult rc = HitTest(pt, &pos);
2280
2281     if ( rc != wxTE_HT_UNKNOWN )
2282     {
2283         PositionToXY(pos, x, y);
2284     }
2285
2286     return rc;
2287 }
2288
2289 wxTextCtrlHitTestResult
2290 wxRichTextCtrl::HitTest(const wxPoint& pt,
2291                         long * pos) const
2292 {
2293     wxClientDC dc((wxRichTextCtrl*) this);
2294     ((wxRichTextCtrl*)this)->PrepareDC(dc);
2295
2296     // Buffer uses logical position (relative to start of buffer)
2297     // so convert
2298     wxPoint pt2 = GetLogicalPoint(pt);
2299
2300     int hit = ((wxRichTextCtrl*)this)->GetBuffer().HitTest(dc, pt2, *pos);
2301
2302     if ((hit & wxRICHTEXT_HITTEST_BEFORE) && (hit & wxRICHTEXT_HITTEST_OUTSIDE))
2303         return wxTE_HT_BEFORE;
2304     else if ((hit & wxRICHTEXT_HITTEST_AFTER) && (hit & wxRICHTEXT_HITTEST_OUTSIDE))
2305         return wxTE_HT_BEYOND;
2306     else if (hit & (wxRICHTEXT_HITTEST_BEFORE|wxRICHTEXT_HITTEST_AFTER))
2307         return wxTE_HT_ON_TEXT;
2308
2309     return wxTE_HT_UNKNOWN;
2310 }
2311
2312 // ----------------------------------------------------------------------------
2313 // set/get the controls text
2314 // ----------------------------------------------------------------------------
2315
2316 wxString wxRichTextCtrl::DoGetValue() const
2317 {
2318     return GetBuffer().GetText();
2319 }
2320
2321 wxString wxRichTextCtrl::GetRange(long from, long to) const
2322 {
2323     // Public API for range is different from internals
2324     return GetBuffer().GetTextForRange(wxRichTextRange(from, to-1));
2325 }
2326
2327 void wxRichTextCtrl::DoSetValue(const wxString& value, int flags)
2328 {
2329     // Don't call Clear here, since it always sends a text updated event
2330     m_buffer.ResetAndClearCommands();
2331     m_buffer.SetDirty(true);
2332     m_caretPosition = -1;
2333     m_caretPositionForDefaultStyle = -2;
2334     m_caretAtLineStart = false;
2335     m_selectionRange.SetRange(-2, -2);
2336
2337     Scroll(0,0);
2338
2339     if (!IsFrozen())
2340     {
2341         LayoutContent();
2342         Refresh(false);
2343     }
2344
2345     if (!value.IsEmpty())
2346     {
2347         // Remove empty paragraph
2348         GetBuffer().Clear();
2349         DoWriteText(value, flags);
2350
2351         // for compatibility, don't move the cursor when doing SetValue()
2352         SetInsertionPoint(0);
2353     }
2354     else
2355     {
2356         // still send an event for consistency
2357         if (flags & SetValue_SendEvent)
2358             wxTextCtrl::SendTextUpdatedEvent(this);
2359     }
2360     DiscardEdits();
2361 }
2362
2363 void wxRichTextCtrl::WriteText(const wxString& value)
2364 {
2365     DoWriteText(value);
2366 }
2367
2368 void wxRichTextCtrl::DoWriteText(const wxString& value, int flags)
2369 {
2370     wxString valueUnix = wxTextFile::Translate(value, wxTextFileType_Unix);
2371
2372     GetBuffer().InsertTextWithUndo(m_caretPosition+1, valueUnix, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
2373
2374     if ( flags & SetValue_SendEvent )
2375         wxTextCtrl::SendTextUpdatedEvent(this);
2376 }
2377
2378 void wxRichTextCtrl::AppendText(const wxString& text)
2379 {
2380     SetInsertionPointEnd();
2381
2382     WriteText(text);
2383 }
2384
2385 /// Write an image at the current insertion point
2386 bool wxRichTextCtrl::WriteImage(const wxImage& image, wxBitmapType bitmapType)
2387 {
2388     wxRichTextImageBlock imageBlock;
2389
2390     wxImage image2 = image;
2391     if (imageBlock.MakeImageBlock(image2, bitmapType))
2392         return WriteImage(imageBlock);
2393
2394     return false;
2395 }
2396
2397 bool wxRichTextCtrl::WriteImage(const wxString& filename, wxBitmapType bitmapType)
2398 {
2399     wxRichTextImageBlock imageBlock;
2400
2401     wxImage image;
2402     if (imageBlock.MakeImageBlock(filename, bitmapType, image, false))
2403         return WriteImage(imageBlock);
2404
2405     return false;
2406 }
2407
2408 bool wxRichTextCtrl::WriteImage(const wxRichTextImageBlock& imageBlock)
2409 {
2410     return GetBuffer().InsertImageWithUndo(m_caretPosition+1, imageBlock, this);
2411 }
2412
2413 bool wxRichTextCtrl::WriteImage(const wxBitmap& bitmap, wxBitmapType bitmapType)
2414 {
2415     if (bitmap.Ok())
2416     {
2417         wxRichTextImageBlock imageBlock;
2418
2419         wxImage image = bitmap.ConvertToImage();
2420         if (image.Ok() && imageBlock.MakeImageBlock(image, bitmapType))
2421             return WriteImage(imageBlock);
2422     }
2423
2424     return false;
2425 }
2426
2427 /// Insert a newline (actually paragraph) at the current insertion point.
2428 bool wxRichTextCtrl::Newline()
2429 {
2430     return GetBuffer().InsertNewlineWithUndo(m_caretPosition+1, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
2431 }
2432
2433 /// Insert a line break at the current insertion point.
2434 bool wxRichTextCtrl::LineBreak()
2435 {
2436     wxString text;
2437     text = wxRichTextLineBreakChar;
2438     return GetBuffer().InsertTextWithUndo(m_caretPosition+1, text, this);
2439 }
2440
2441 // ----------------------------------------------------------------------------
2442 // Clipboard operations
2443 // ----------------------------------------------------------------------------
2444
2445 void wxRichTextCtrl::Copy()
2446 {
2447     if (CanCopy())
2448     {
2449         wxRichTextRange range = GetInternalSelectionRange();
2450         GetBuffer().CopyToClipboard(range);
2451     }
2452 }
2453
2454 void wxRichTextCtrl::Cut()
2455 {
2456     if (CanCut())
2457     {
2458         wxRichTextRange range = GetInternalSelectionRange();
2459         GetBuffer().CopyToClipboard(range);
2460
2461         DeleteSelectedContent();
2462         LayoutContent();
2463         Refresh(false);
2464     }
2465 }
2466
2467 void wxRichTextCtrl::Paste()
2468 {
2469     if (CanPaste())
2470     {
2471         BeginBatchUndo(_("Paste"));
2472
2473         long newPos = m_caretPosition;
2474         DeleteSelectedContent(& newPos);
2475
2476         GetBuffer().PasteFromClipboard(newPos);
2477
2478         EndBatchUndo();
2479     }
2480 }
2481
2482 void wxRichTextCtrl::DeleteSelection()
2483 {
2484     if (CanDeleteSelection())
2485     {
2486         DeleteSelectedContent();
2487     }
2488 }
2489
2490 bool wxRichTextCtrl::HasSelection() const
2491 {
2492     return m_selectionRange.GetStart() != -2 && m_selectionRange.GetEnd() != -2;
2493 }
2494
2495 bool wxRichTextCtrl::CanCopy() const
2496 {
2497     // Can copy if there's a selection
2498     return HasSelection();
2499 }
2500
2501 bool wxRichTextCtrl::CanCut() const
2502 {
2503     return HasSelection() && IsEditable();
2504 }
2505
2506 bool wxRichTextCtrl::CanPaste() const
2507 {
2508     if ( !IsEditable() )
2509         return false;
2510
2511     return GetBuffer().CanPasteFromClipboard();
2512 }
2513
2514 bool wxRichTextCtrl::CanDeleteSelection() const
2515 {
2516     return HasSelection() && IsEditable();
2517 }
2518
2519
2520 // ----------------------------------------------------------------------------
2521 // Accessors
2522 // ----------------------------------------------------------------------------
2523
2524 void wxRichTextCtrl::SetEditable(bool editable)
2525 {
2526     m_editable = editable;
2527 }
2528
2529 void wxRichTextCtrl::SetInsertionPoint(long pos)
2530 {
2531     SelectNone();
2532
2533     m_caretPosition = pos - 1;
2534
2535     PositionCaret();
2536 }
2537
2538 void wxRichTextCtrl::SetInsertionPointEnd()
2539 {
2540     long pos = GetLastPosition();
2541     SetInsertionPoint(pos);
2542 }
2543
2544 long wxRichTextCtrl::GetInsertionPoint() const
2545 {
2546     return m_caretPosition+1;
2547 }
2548
2549 wxTextPos wxRichTextCtrl::GetLastPosition() const
2550 {
2551     return GetBuffer().GetRange().GetEnd();
2552 }
2553
2554 // If the return values from and to are the same, there is no
2555 // selection.
2556 void wxRichTextCtrl::GetSelection(long* from, long* to) const
2557 {
2558     *from = m_selectionRange.GetStart();
2559     *to = m_selectionRange.GetEnd();
2560     if ((*to) != -1 && (*to) != -2)
2561         (*to) ++;
2562 }
2563
2564 bool wxRichTextCtrl::IsEditable() const
2565 {
2566     return m_editable;
2567 }
2568
2569 // ----------------------------------------------------------------------------
2570 // selection
2571 // ----------------------------------------------------------------------------
2572
2573 void wxRichTextCtrl::SetSelection(long from, long to)
2574 {
2575     // if from and to are both -1, it means (in wxWidgets) that all text should
2576     // be selected.
2577     if ( (from == -1) && (to == -1) )
2578     {
2579         from = 0;
2580         to = GetLastPosition()+1;
2581     }
2582
2583     if (from == to)
2584     {
2585         SelectNone();
2586     }
2587     else
2588     {
2589         wxRichTextRange oldSelection = m_selectionRange;
2590         m_selectionAnchor = from;
2591         m_selectionRange.SetRange(from, to-1);
2592         if (from > -2)
2593             m_caretPosition = from-1;
2594
2595         RefreshForSelectionChange(oldSelection, m_selectionRange);
2596         PositionCaret();
2597     }
2598 }
2599
2600 // ----------------------------------------------------------------------------
2601 // Editing
2602 // ----------------------------------------------------------------------------
2603
2604 void wxRichTextCtrl::Replace(long WXUNUSED(from), long WXUNUSED(to),
2605                              const wxString& value)
2606 {
2607     BeginBatchUndo(_("Replace"));
2608
2609     DeleteSelectedContent();
2610
2611     DoWriteText(value, SetValue_SelectionOnly);
2612
2613     EndBatchUndo();
2614 }
2615
2616 void wxRichTextCtrl::Remove(long from, long to)
2617 {
2618     SelectNone();
2619
2620     GetBuffer().DeleteRangeWithUndo(wxRichTextRange(from, to-1), this);
2621
2622     LayoutContent();
2623     if (!IsFrozen())
2624         Refresh(false);
2625 }
2626
2627 bool wxRichTextCtrl::IsModified() const
2628 {
2629     return m_buffer.IsModified();
2630 }
2631
2632 void wxRichTextCtrl::MarkDirty()
2633 {
2634     m_buffer.Modify(true);
2635 }
2636
2637 void wxRichTextCtrl::DiscardEdits()
2638 {
2639     m_caretPositionForDefaultStyle = -2;
2640     m_buffer.Modify(false);
2641     m_buffer.GetCommandProcessor()->ClearCommands();
2642 }
2643
2644 int wxRichTextCtrl::GetNumberOfLines() const
2645 {
2646     return GetBuffer().GetParagraphCount();
2647 }
2648
2649 // ----------------------------------------------------------------------------
2650 // Positions <-> coords
2651 // ----------------------------------------------------------------------------
2652
2653 long wxRichTextCtrl::XYToPosition(long x, long y) const
2654 {
2655     return GetBuffer().XYToPosition(x, y);
2656 }
2657
2658 bool wxRichTextCtrl::PositionToXY(long pos, long *x, long *y) const
2659 {
2660     return GetBuffer().PositionToXY(pos, x, y);
2661 }
2662
2663 // ----------------------------------------------------------------------------
2664 //
2665 // ----------------------------------------------------------------------------
2666
2667 void wxRichTextCtrl::ShowPosition(long pos)
2668 {
2669     if (!IsPositionVisible(pos))
2670         ScrollIntoView(pos-1, WXK_DOWN);
2671 }
2672
2673 int wxRichTextCtrl::GetLineLength(long lineNo) const
2674 {
2675     return GetBuffer().GetParagraphLength(lineNo);
2676 }
2677
2678 wxString wxRichTextCtrl::GetLineText(long lineNo) const
2679 {
2680     return GetBuffer().GetParagraphText(lineNo);
2681 }
2682
2683 // ----------------------------------------------------------------------------
2684 // Undo/redo
2685 // ----------------------------------------------------------------------------
2686
2687 void wxRichTextCtrl::Undo()
2688 {
2689     if (CanUndo())
2690     {
2691         GetCommandProcessor()->Undo();
2692     }
2693 }
2694
2695 void wxRichTextCtrl::Redo()
2696 {
2697     if (CanRedo())
2698     {
2699         GetCommandProcessor()->Redo();
2700     }
2701 }
2702
2703 bool wxRichTextCtrl::CanUndo() const
2704 {
2705     return GetCommandProcessor()->CanUndo();
2706 }
2707
2708 bool wxRichTextCtrl::CanRedo() const
2709 {
2710     return GetCommandProcessor()->CanRedo();
2711 }
2712
2713 // ----------------------------------------------------------------------------
2714 // implementation details
2715 // ----------------------------------------------------------------------------
2716
2717 void wxRichTextCtrl::Command(wxCommandEvent& event)
2718 {
2719     SetValue(event.GetString());
2720     GetEventHandler()->ProcessEvent(event);
2721 }
2722
2723 void wxRichTextCtrl::OnDropFiles(wxDropFilesEvent& event)
2724 {
2725     // By default, load the first file into the text window.
2726     if (event.GetNumberOfFiles() > 0)
2727     {
2728         LoadFile(event.GetFiles()[0]);
2729     }
2730 }
2731
2732 wxSize wxRichTextCtrl::DoGetBestSize() const
2733 {
2734     return wxSize(10, 10);
2735 }
2736
2737 // ----------------------------------------------------------------------------
2738 // standard handlers for standard edit menu events
2739 // ----------------------------------------------------------------------------
2740
2741 void wxRichTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2742 {
2743     Cut();
2744 }
2745
2746 void wxRichTextCtrl::OnClear(wxCommandEvent& WXUNUSED(event))
2747 {
2748     DeleteSelection();
2749 }
2750
2751 void wxRichTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2752 {
2753     Copy();
2754 }
2755
2756 void wxRichTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2757 {
2758     Paste();
2759 }
2760
2761 void wxRichTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2762 {
2763     Undo();
2764 }
2765
2766 void wxRichTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2767 {
2768     Redo();
2769 }
2770
2771 void wxRichTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2772 {
2773     event.Enable( CanCut() );
2774 }
2775
2776 void wxRichTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2777 {
2778     event.Enable( CanCopy() );
2779 }
2780
2781 void wxRichTextCtrl::OnUpdateClear(wxUpdateUIEvent& event)
2782 {
2783     event.Enable( CanDeleteSelection() );
2784 }
2785
2786 void wxRichTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2787 {
2788     event.Enable( CanPaste() );
2789 }
2790
2791 void wxRichTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2792 {
2793     event.Enable( CanUndo() );
2794     event.SetText( GetCommandProcessor()->GetUndoMenuLabel() );
2795 }
2796
2797 void wxRichTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2798 {
2799     event.Enable( CanRedo() );
2800     event.SetText( GetCommandProcessor()->GetRedoMenuLabel() );
2801 }
2802
2803 void wxRichTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2804 {
2805     SelectAll();
2806 }
2807
2808 void wxRichTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2809 {
2810     event.Enable(GetLastPosition() > 0);
2811 }
2812
2813 void wxRichTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2814 {
2815     if (event.GetEventObject() != this)
2816     {
2817         event.Skip();
2818         return;
2819     }
2820
2821     if (!m_contextMenu)
2822     {
2823         m_contextMenu = new wxMenu;
2824         m_contextMenu->Append(wxID_UNDO, _("&Undo"));
2825         m_contextMenu->Append(wxID_REDO, _("&Redo"));
2826         m_contextMenu->AppendSeparator();
2827         m_contextMenu->Append(wxID_CUT, _("Cu&t"));
2828         m_contextMenu->Append(wxID_COPY, _("&Copy"));
2829         m_contextMenu->Append(wxID_PASTE, _("&Paste"));
2830         m_contextMenu->Append(wxID_CLEAR, _("&Delete"));
2831         m_contextMenu->AppendSeparator();
2832         m_contextMenu->Append(wxID_SELECTALL, _("Select &All"));
2833     }
2834     PopupMenu(m_contextMenu);
2835     return;
2836 }
2837
2838 bool wxRichTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2839 {
2840     return GetBuffer().SetStyle(wxRichTextRange(start, end-1), wxTextAttr(style));
2841 }
2842
2843 bool wxRichTextCtrl::SetStyle(const wxRichTextRange& range, const wxTextAttr& style)
2844 {
2845     return GetBuffer().SetStyle(range.ToInternal(), style);
2846 }
2847
2848 // extended style setting operation with flags including:
2849 // wxRICHTEXT_SETSTYLE_WITH_UNDO, wxRICHTEXT_SETSTYLE_OPTIMIZE, wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY.
2850 // see richtextbuffer.h for more details.
2851
2852 bool wxRichTextCtrl::SetStyleEx(const wxRichTextRange& range, const wxTextAttr& style, int flags)
2853 {
2854     return GetBuffer().SetStyle(range.ToInternal(), style, flags);
2855 }
2856
2857 bool wxRichTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2858 {
2859     return GetBuffer().SetDefaultStyle(wxTextAttr(style));
2860 }
2861
2862 const wxTextAttr& wxRichTextCtrl::GetDefaultStyle() const
2863 {
2864     return GetBuffer().GetDefaultStyle();
2865 }
2866
2867 bool wxRichTextCtrl::GetStyle(long position, wxTextAttr& style)
2868 {
2869     return GetBuffer().GetStyle(position, style);
2870 }
2871
2872 // get the common set of styles for the range
2873 bool wxRichTextCtrl::GetStyleForRange(const wxRichTextRange& range, wxTextAttr& style)
2874 {
2875     return GetBuffer().GetStyleForRange(range.ToInternal(), style);
2876 }
2877
2878 /// Get the content (uncombined) attributes for this position.
2879 bool wxRichTextCtrl::GetUncombinedStyle(long position, wxTextAttr& style)
2880 {
2881     return GetBuffer().GetUncombinedStyle(position, style);
2882 }
2883
2884 /// Set font, and also the buffer attributes
2885 bool wxRichTextCtrl::SetFont(const wxFont& font)
2886 {
2887     wxTextCtrlBase::SetFont(font);
2888
2889     wxTextAttr attr = GetBuffer().GetAttributes();
2890     attr.SetFont(font);
2891     GetBuffer().SetBasicStyle(attr);
2892
2893     GetBuffer().Invalidate(wxRICHTEXT_ALL);
2894     Refresh(false);
2895
2896     return true;
2897 }
2898
2899 /// Transform logical to physical
2900 wxPoint wxRichTextCtrl::GetPhysicalPoint(const wxPoint& ptLogical) const
2901 {
2902     wxPoint pt;
2903     CalcScrolledPosition(ptLogical.x, ptLogical.y, & pt.x, & pt.y);
2904
2905     return pt;
2906 }
2907
2908 /// Transform physical to logical
2909 wxPoint wxRichTextCtrl::GetLogicalPoint(const wxPoint& ptPhysical) const
2910 {
2911     wxPoint pt;
2912     CalcUnscrolledPosition(ptPhysical.x, ptPhysical.y, & pt.x, & pt.y);
2913
2914     return pt;
2915 }
2916
2917 /// Position the caret
2918 void wxRichTextCtrl::PositionCaret()
2919 {
2920     if (!GetCaret())
2921         return;
2922
2923     //wxLogDebug(wxT("PositionCaret"));
2924
2925     wxRect caretRect;
2926     if (GetCaretPositionForIndex(GetCaretPosition(), caretRect))
2927     {
2928         wxPoint newPt = caretRect.GetPosition();
2929         wxSize newSz = caretRect.GetSize();
2930         wxPoint pt = GetPhysicalPoint(newPt);
2931         if (GetCaret()->GetPosition() != pt || GetCaret()->GetSize() != newSz)
2932         {
2933             GetCaret()->Hide();
2934             if (GetCaret()->GetSize() != newSz)
2935                 GetCaret()->SetSize(newSz);
2936
2937             int halfSize = newSz.y/2;
2938             // If the caret is beyond the margin, hide it by moving it out of the way
2939             if (((pt.y + halfSize) < GetBuffer().GetTopMargin()) || ((pt.y + halfSize) > (GetClientSize().y - GetBuffer().GetBottomMargin())))
2940                 pt.y = -200;
2941
2942             GetCaret()->Move(pt);
2943             GetCaret()->Show();
2944         }
2945     }
2946 }
2947
2948 /// Get the caret height and position for the given character position
2949 bool wxRichTextCtrl::GetCaretPositionForIndex(long position, wxRect& rect)
2950 {
2951     wxClientDC dc(this);
2952     dc.SetFont(GetFont());
2953
2954     PrepareDC(dc);
2955
2956     wxPoint pt;
2957     int height = 0;
2958
2959     if (GetBuffer().FindPosition(dc, position, pt, & height, m_caretAtLineStart))
2960     {
2961         // Caret height can't be zero
2962         if (height == 0)
2963             height = dc.GetCharHeight();
2964
2965         rect = wxRect(pt, wxSize(wxRICHTEXT_DEFAULT_CARET_WIDTH, height));
2966         return true;
2967     }
2968
2969     return false;
2970 }
2971
2972 /// Gets the line for the visible caret position. If the caret is
2973 /// shown at the very end of the line, it means the next character is actually
2974 /// on the following line. So let's get the line we're expecting to find
2975 /// if this is the case.
2976 wxRichTextLine* wxRichTextCtrl::GetVisibleLineForCaretPosition(long caretPosition) const
2977 {
2978     wxRichTextLine* line = GetBuffer().GetLineAtPosition(caretPosition, true);
2979     wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(caretPosition, true);
2980     if (line)
2981     {
2982         wxRichTextRange lineRange = line->GetAbsoluteRange();
2983         if (caretPosition == lineRange.GetStart()-1 &&
2984             (para->GetRange().GetStart() != lineRange.GetStart()))
2985         {
2986             if (!m_caretAtLineStart)
2987                 line = GetBuffer().GetLineAtPosition(caretPosition-1, true);
2988         }
2989     }
2990     return line;
2991 }
2992
2993
2994 /// Move the caret to the given character position
2995 bool wxRichTextCtrl::MoveCaret(long pos, bool showAtLineStart)
2996 {
2997     if (GetBuffer().GetDirty())
2998         LayoutContent();
2999
3000     if (pos <= GetBuffer().GetRange().GetEnd())
3001     {
3002         SetCaretPosition(pos, showAtLineStart);
3003
3004         PositionCaret();
3005
3006         return true;
3007     }
3008     else
3009         return false;
3010 }
3011
3012 /// Layout the buffer: which we must do before certain operations, such as
3013 /// setting the caret position.
3014 bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
3015 {
3016     if (GetBuffer().GetDirty() || onlyVisibleRect)
3017     {
3018         wxRect availableSpace(GetClientSize());
3019         if (availableSpace.width == 0)
3020             availableSpace.width = 10;
3021         if (availableSpace.height == 0)
3022             availableSpace.height = 10;
3023
3024         int flags = wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT;
3025         if (onlyVisibleRect)
3026         {
3027             flags |= wxRICHTEXT_LAYOUT_SPECIFIED_RECT;
3028             availableSpace.SetPosition(GetLogicalPoint(wxPoint(0, 0)));
3029         }
3030
3031         wxClientDC dc(this);
3032         dc.SetFont(GetFont());
3033
3034         PrepareDC(dc);
3035
3036         GetBuffer().Defragment();
3037         GetBuffer().UpdateRanges();     // If items were deleted, ranges need recalculation
3038         GetBuffer().Layout(dc, availableSpace, flags);
3039         GetBuffer().SetDirty(false);
3040
3041         if (!IsFrozen())
3042             SetupScrollbars();
3043     }
3044
3045     return true;
3046 }
3047
3048 /// Is all of the selection bold?
3049 bool wxRichTextCtrl::IsSelectionBold()
3050 {
3051     if (HasSelection())
3052     {
3053         wxTextAttr attr;
3054         wxRichTextRange range = GetSelectionRange();
3055         attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
3056         attr.SetFontWeight(wxFONTWEIGHT_BOLD);
3057
3058         return HasCharacterAttributes(range, attr);
3059     }
3060     else
3061     {
3062         // If no selection, then we need to combine current style with default style
3063         // to see what the effect would be if we started typing.
3064         wxTextAttr attr;
3065         attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
3066
3067         long pos = GetAdjustedCaretPosition(GetCaretPosition());
3068         if (GetStyle(pos, attr))
3069         {
3070             if (IsDefaultStyleShowing())
3071                 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3072             return attr.GetFontWeight() == wxFONTWEIGHT_BOLD;
3073         }
3074     }
3075     return false;
3076 }
3077
3078 /// Is all of the selection italics?
3079 bool wxRichTextCtrl::IsSelectionItalics()
3080 {
3081     if (HasSelection())
3082     {
3083         wxRichTextRange range = GetSelectionRange();
3084         wxTextAttr attr;
3085         attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
3086         attr.SetFontStyle(wxFONTSTYLE_ITALIC);
3087
3088         return HasCharacterAttributes(range, attr);
3089     }
3090     else
3091     {
3092         // If no selection, then we need to combine current style with default style
3093         // to see what the effect would be if we started typing.
3094         wxTextAttr attr;
3095         attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
3096
3097         long pos = GetAdjustedCaretPosition(GetCaretPosition());
3098         if (GetStyle(pos, attr))
3099         {
3100             if (IsDefaultStyleShowing())
3101                 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3102             return attr.GetFontStyle() == wxFONTSTYLE_ITALIC;
3103         }
3104     }
3105     return false;
3106 }
3107
3108 /// Is all of the selection underlined?
3109 bool wxRichTextCtrl::IsSelectionUnderlined()
3110 {
3111     if (HasSelection())
3112     {
3113         wxRichTextRange range = GetSelectionRange();
3114         wxTextAttr attr;
3115         attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
3116         attr.SetFontUnderlined(true);
3117
3118         return HasCharacterAttributes(range, attr);
3119     }
3120     else
3121     {
3122         // If no selection, then we need to combine current style with default style
3123         // to see what the effect would be if we started typing.
3124         wxTextAttr attr;
3125         attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
3126         long pos = GetAdjustedCaretPosition(GetCaretPosition());
3127
3128         if (GetStyle(pos, attr))
3129         {
3130             if (IsDefaultStyleShowing())
3131                 wxRichTextApplyStyle(attr, GetDefaultStyleEx());
3132             return attr.GetFontUnderlined();
3133         }
3134     }
3135     return false;
3136 }
3137
3138 /// Apply bold to the selection
3139 bool wxRichTextCtrl::ApplyBoldToSelection()
3140 {
3141     wxTextAttr attr;
3142     attr.SetFlags(wxTEXT_ATTR_FONT_WEIGHT);
3143     attr.SetFontWeight(IsSelectionBold() ? wxFONTWEIGHT_NORMAL : wxFONTWEIGHT_BOLD);
3144
3145     if (HasSelection())
3146         return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3147     else
3148     {
3149         wxRichTextAttr current = GetDefaultStyleEx();
3150         current.Apply(attr);
3151         SetAndShowDefaultStyle(current);
3152     }
3153     return true;
3154 }
3155
3156 /// Apply italic to the selection
3157 bool wxRichTextCtrl::ApplyItalicToSelection()
3158 {
3159     wxTextAttr attr;
3160     attr.SetFlags(wxTEXT_ATTR_FONT_ITALIC);
3161     attr.SetFontStyle(IsSelectionItalics() ? wxFONTSTYLE_NORMAL : wxFONTSTYLE_ITALIC);
3162
3163     if (HasSelection())
3164         return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3165     else
3166     {
3167         wxRichTextAttr current = GetDefaultStyleEx();
3168         current.Apply(attr);
3169         SetAndShowDefaultStyle(current);
3170     }
3171     return true;
3172 }
3173
3174 /// Apply underline to the selection
3175 bool wxRichTextCtrl::ApplyUnderlineToSelection()
3176 {
3177     wxTextAttr attr;
3178     attr.SetFlags(wxTEXT_ATTR_FONT_UNDERLINE);
3179     attr.SetFontUnderlined(!IsSelectionUnderlined());
3180
3181     if (HasSelection())
3182         return SetStyleEx(GetSelectionRange(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_CHARACTERS_ONLY);
3183     else
3184     {
3185         wxRichTextAttr current = GetDefaultStyleEx();
3186         current.Apply(attr);
3187         SetAndShowDefaultStyle(current);
3188     }
3189     return true;
3190 }
3191
3192 /// Is all of the selection aligned according to the specified flag?
3193 bool wxRichTextCtrl::IsSelectionAligned(wxTextAttrAlignment alignment)
3194 {
3195     wxRichTextRange range;
3196     if (HasSelection())
3197         range = GetSelectionRange();
3198     else
3199         range = wxRichTextRange(GetCaretPosition()+1, GetCaretPosition()+2);
3200
3201     wxTextAttr attr;
3202     attr.SetAlignment(alignment);
3203
3204     return HasParagraphAttributes(range, attr);
3205 }
3206
3207 /// Apply alignment to the selection
3208 bool wxRichTextCtrl::ApplyAlignmentToSelection(wxTextAttrAlignment alignment)
3209 {
3210     wxTextAttr attr;
3211     attr.SetAlignment(alignment);
3212     if (HasSelection())
3213         return SetStyle(GetSelectionRange(), attr);
3214     else
3215     {
3216         wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(GetCaretPosition()+1);
3217         if (para)
3218             return SetStyleEx(para->GetRange().FromInternal(), attr, wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY);
3219     }
3220     return true;
3221 }
3222
3223 /// Apply a named style to the selection
3224 bool wxRichTextCtrl::ApplyStyle(wxRichTextStyleDefinition* def)
3225 {
3226     // Flags are defined within each definition, so only certain
3227     // attributes are applied.
3228     wxTextAttr attr(GetStyleSheet() ? def->GetStyleMergedWithBase(GetStyleSheet()) : def->GetStyle());
3229
3230     int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_RESET;
3231
3232     if (def->IsKindOf(CLASSINFO(wxRichTextListStyleDefinition)))
3233     {
3234         flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
3235
3236         wxRichTextRange range;
3237
3238         if (HasSelection())
3239             range = GetSelectionRange();
3240         else
3241         {
3242             long pos = GetAdjustedCaretPosition(GetCaretPosition());
3243             range = wxRichTextRange(pos, pos+1);
3244         }
3245
3246         return SetListStyle(range, (wxRichTextListStyleDefinition*) def, flags);
3247     }
3248
3249     // Make sure the attr has the style name
3250     if (def->IsKindOf(CLASSINFO(wxRichTextParagraphStyleDefinition)))
3251     {
3252         attr.SetParagraphStyleName(def->GetName());
3253
3254         // If applying a paragraph style, we only want the paragraph nodes to adopt these
3255         // attributes, and not the leaf nodes. This will allow the content (e.g. text)
3256         // to change its style independently.
3257         flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
3258     }
3259     else
3260         attr.SetCharacterStyleName(def->GetName());
3261
3262     if (HasSelection())
3263         return SetStyleEx(GetSelectionRange(), attr, flags);
3264     else
3265     {
3266         wxRichTextAttr current = GetDefaultStyleEx();
3267         current.Apply(attr);
3268         SetAndShowDefaultStyle(current);
3269         return true;
3270     }
3271 }
3272
3273 /// Apply the style sheet to the buffer, for example if the styles have changed.
3274 bool wxRichTextCtrl::ApplyStyleSheet(wxRichTextStyleSheet* styleSheet)
3275 {
3276     if (!styleSheet)
3277         styleSheet = GetBuffer().GetStyleSheet();
3278     if (!styleSheet)
3279         return false;
3280
3281     if (GetBuffer().ApplyStyleSheet(styleSheet))
3282     {
3283         GetBuffer().Invalidate(wxRICHTEXT_ALL);
3284         Refresh(false);
3285         return true;
3286     }
3287     else
3288         return false;
3289 }
3290
3291 /// Sets the default style to the style under the cursor
3292 bool wxRichTextCtrl::SetDefaultStyleToCursorStyle()
3293 {
3294     wxTextAttr attr;
3295     attr.SetFlags(wxTEXT_ATTR_CHARACTER);
3296
3297     // If at the start of a paragraph, use the next position.
3298     long pos = GetAdjustedCaretPosition(GetCaretPosition());
3299
3300     if (GetUncombinedStyle(pos, attr))
3301     {
3302         SetDefaultStyle(attr);
3303         return true;
3304     }
3305
3306     return false;
3307 }
3308
3309 /// Returns the first visible position in the current view
3310 long wxRichTextCtrl::GetFirstVisiblePosition() const
3311 {
3312     wxRichTextLine* line = GetBuffer().GetLineAtYPosition(GetLogicalPoint(wxPoint(0, 0)).y);
3313     if (line)
3314         return line->GetAbsoluteRange().GetStart();
3315     else
3316         return 0;
3317 }
3318
3319 /// Get the first visible point in the window
3320 wxPoint wxRichTextCtrl::GetFirstVisiblePoint() const
3321 {
3322     int ppuX, ppuY;
3323     int startXUnits, startYUnits;
3324
3325     GetScrollPixelsPerUnit(& ppuX, & ppuY);
3326     GetViewStart(& startXUnits, & startYUnits);
3327
3328     return wxPoint(startXUnits * ppuX, startYUnits * ppuY);
3329 }
3330
3331 /// The adjusted caret position is the character position adjusted to take
3332 /// into account whether we're at the start of a paragraph, in which case
3333 /// style information should be taken from the next position, not current one.
3334 long wxRichTextCtrl::GetAdjustedCaretPosition(long caretPos) const
3335 {
3336     wxRichTextParagraph* para = GetBuffer().GetParagraphAtPosition(caretPos+1);
3337
3338     if (para && (caretPos+1 == para->GetRange().GetStart()))
3339         caretPos ++;
3340     return caretPos;
3341 }
3342
3343 /// Get/set the selection range in character positions. -1, -1 means no selection.
3344 /// The range is in API convention, i.e. a single character selection is denoted
3345 /// by (n, n+1)
3346 wxRichTextRange wxRichTextCtrl::GetSelectionRange() const
3347 {
3348     wxRichTextRange range = GetInternalSelectionRange();
3349     if (range != wxRichTextRange(-2,-2) && range != wxRichTextRange(-1,-1))
3350         range.SetEnd(range.GetEnd() + 1);
3351     return range;
3352 }
3353
3354 void wxRichTextCtrl::SetSelectionRange(const wxRichTextRange& range)
3355 {
3356     wxRichTextRange range1(range);
3357     if (range1 != wxRichTextRange(-2,-2) && range1 != wxRichTextRange(-1,-1) )
3358         range1.SetEnd(range1.GetEnd() - 1);
3359
3360     wxASSERT( range1.GetStart() > range1.GetEnd() );
3361
3362     SetInternalSelectionRange(range1);
3363 }
3364
3365 /// Set list style
3366 bool wxRichTextCtrl::SetListStyle(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int startFrom, int specifiedLevel)
3367 {
3368     return GetBuffer().SetListStyle(range.ToInternal(), def, flags, startFrom, specifiedLevel);
3369 }
3370
3371 bool wxRichTextCtrl::SetListStyle(const wxRichTextRange& range, const wxString& defName, int flags, int startFrom, int specifiedLevel)
3372 {
3373     return GetBuffer().SetListStyle(range.ToInternal(), defName, flags, startFrom, specifiedLevel);
3374 }
3375
3376 /// Clear list for given range
3377 bool wxRichTextCtrl::ClearListStyle(const wxRichTextRange& range, int flags)
3378 {
3379     return GetBuffer().ClearListStyle(range.ToInternal(), flags);
3380 }
3381
3382 /// Number/renumber any list elements in the given range
3383 bool wxRichTextCtrl::NumberList(const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int startFrom, int specifiedLevel)
3384 {
3385     return GetBuffer().NumberList(range.ToInternal(), def, flags, startFrom, specifiedLevel);
3386 }
3387
3388 bool wxRichTextCtrl::NumberList(const wxRichTextRange& range, const wxString& defName, int flags, int startFrom, int specifiedLevel)
3389 {
3390     return GetBuffer().NumberList(range.ToInternal(), defName, flags, startFrom, specifiedLevel);
3391 }
3392
3393 /// Promote the list items within the given range. promoteBy can be a positive or negative number, e.g. 1 or -1
3394 bool wxRichTextCtrl::PromoteList(int promoteBy, const wxRichTextRange& range, wxRichTextListStyleDefinition* def, int flags, int specifiedLevel)
3395 {
3396     return GetBuffer().PromoteList(promoteBy, range.ToInternal(), def, flags, specifiedLevel);
3397 }
3398
3399 bool wxRichTextCtrl::PromoteList(int promoteBy, const wxRichTextRange& range, const wxString& defName, int flags, int specifiedLevel)
3400 {
3401     return GetBuffer().PromoteList(promoteBy, range.ToInternal(), defName, flags, specifiedLevel);
3402 }
3403
3404 /// Deletes the content in the given range
3405 bool wxRichTextCtrl::Delete(const wxRichTextRange& range)
3406 {
3407     return GetBuffer().DeleteRangeWithUndo(range.ToInternal(), this);
3408 }
3409
3410 const wxArrayString& wxRichTextCtrl::GetAvailableFontNames()
3411 {
3412     if (sm_availableFontNames.GetCount() == 0)
3413     {
3414         sm_availableFontNames = wxFontEnumerator::GetFacenames();
3415         sm_availableFontNames.Sort();
3416     }
3417     return sm_availableFontNames;
3418 }
3419
3420 void wxRichTextCtrl::ClearAvailableFontNames()
3421 {
3422     sm_availableFontNames.Clear();
3423 }
3424
3425 void wxRichTextCtrl::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
3426 {
3427     //wxLogDebug(wxT("wxRichTextCtrl::OnSysColourChanged"));
3428
3429     wxTextAttrEx basicStyle = GetBasicStyle();
3430     basicStyle.SetTextColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
3431     SetBasicStyle(basicStyle);
3432     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
3433
3434     Refresh();
3435 }
3436
3437 // Refresh the area affected by a selection change
3438 bool wxRichTextCtrl::RefreshForSelectionChange(const wxRichTextRange& oldSelection, const wxRichTextRange& newSelection)
3439 {
3440     // Calculate the refresh rectangle - just the affected lines
3441     long firstPos, lastPos;
3442     if (oldSelection.GetStart() == -2 && newSelection.GetStart() != -2)
3443     {
3444         firstPos = newSelection.GetStart();
3445         lastPos = newSelection.GetEnd();
3446     }
3447     else if (oldSelection.GetStart() != -2 && newSelection.GetStart() == -2)
3448     {
3449         firstPos = oldSelection.GetStart();
3450         lastPos = oldSelection.GetEnd();
3451     }
3452     else if (oldSelection.GetStart() == -2 && newSelection.GetStart() == -2)
3453     {
3454         return false;
3455     }
3456     else
3457     {
3458         firstPos = wxMin(oldSelection.GetStart(), newSelection.GetStart());
3459         lastPos = wxMax(oldSelection.GetEnd(), newSelection.GetEnd());
3460     }
3461
3462     wxRichTextLine* firstLine = GetBuffer().GetLineAtPosition(firstPos);
3463     wxRichTextLine* lastLine = GetBuffer().GetLineAtPosition(lastPos);
3464
3465     if (firstLine && lastLine)
3466     {
3467         wxSize clientSize = GetClientSize();
3468         wxPoint pt1 = GetPhysicalPoint(firstLine->GetAbsolutePosition());
3469         wxPoint pt2 = GetPhysicalPoint(lastLine->GetAbsolutePosition()) + wxPoint(0, lastLine->GetSize().y);
3470
3471         pt1.x = 0;
3472         pt1.y = wxMax(0, pt1.y);
3473         pt2.x = 0;
3474         pt2.y = wxMin(clientSize.y, pt2.y);
3475
3476         wxRect rect(pt1, wxSize(clientSize.x, pt2.y - pt1.y));
3477         RefreshRect(rect, false);
3478     }
3479     else
3480         Refresh(false);
3481
3482     return true;
3483 }
3484
3485 #if wxRICHTEXT_USE_OWN_CARET
3486
3487 // ----------------------------------------------------------------------------
3488 // initialization and destruction
3489 // ----------------------------------------------------------------------------
3490
3491 void wxRichTextCaret::Init()
3492 {
3493     m_hasFocus = true;
3494
3495     m_xOld =
3496     m_yOld = -1;
3497     m_richTextCtrl = NULL;
3498     m_needsUpdate = false;
3499     m_flashOn = true;
3500 }
3501
3502 wxRichTextCaret::~wxRichTextCaret()
3503 {
3504     if (m_timer.IsRunning())
3505         m_timer.Stop();
3506 }
3507
3508 // ----------------------------------------------------------------------------
3509 // showing/hiding/moving the caret (base class interface)
3510 // ----------------------------------------------------------------------------
3511
3512 void wxRichTextCaret::DoShow()
3513 {
3514     m_flashOn = true;
3515
3516     if (!m_timer.IsRunning())
3517         m_timer.Start(GetBlinkTime());
3518
3519     Refresh();
3520 }
3521
3522 void wxRichTextCaret::DoHide()
3523 {
3524     if (m_timer.IsRunning())
3525         m_timer.Stop();
3526
3527     Refresh();
3528 }
3529
3530 void wxRichTextCaret::DoMove()
3531 {
3532     if (IsVisible())
3533     {
3534         Refresh();
3535
3536         if (m_xOld != -1 && m_yOld != -1)
3537         {
3538             if (m_richTextCtrl)
3539             {
3540                 wxRect rect(GetPosition(), GetSize());
3541                 m_richTextCtrl->RefreshRect(rect, false);
3542             }
3543         }
3544     }
3545
3546     m_xOld = m_x;
3547     m_yOld = m_y;
3548 }
3549
3550 void wxRichTextCaret::DoSize()
3551 {
3552     int countVisible = m_countVisible;
3553     if (countVisible > 0)
3554     {
3555         m_countVisible = 0;
3556         DoHide();
3557     }
3558
3559     if (countVisible > 0)
3560     {
3561         m_countVisible = countVisible;
3562         DoShow();
3563     }
3564 }
3565
3566 // ----------------------------------------------------------------------------
3567 // handling the focus
3568 // ----------------------------------------------------------------------------
3569
3570 void wxRichTextCaret::OnSetFocus()
3571 {
3572     m_hasFocus = true;
3573
3574     if ( IsVisible() )
3575         Refresh();
3576 }
3577
3578 void wxRichTextCaret::OnKillFocus()
3579 {
3580     m_hasFocus = false;
3581 }
3582
3583 // ----------------------------------------------------------------------------
3584 // drawing the caret
3585 // ----------------------------------------------------------------------------
3586
3587 void wxRichTextCaret::Refresh()
3588 {
3589     if (m_richTextCtrl)
3590     {
3591         wxRect rect(GetPosition(), GetSize());
3592         m_richTextCtrl->RefreshRect(rect, false);
3593     }
3594 }
3595
3596 void wxRichTextCaret::DoDraw(wxDC *dc)
3597 {
3598     dc->SetPen( *wxBLACK_PEN );
3599
3600     dc->SetBrush(*(m_hasFocus ? wxBLACK_BRUSH : wxTRANSPARENT_BRUSH));
3601     dc->SetPen(*wxBLACK_PEN);
3602
3603     wxPoint pt(m_x, m_y);
3604
3605     if (m_richTextCtrl)
3606     {
3607         pt = m_richTextCtrl->GetLogicalPoint(pt);
3608     }
3609     if (IsVisible() && m_flashOn)
3610         dc->DrawRectangle(pt.x, pt.y, m_width, m_height);
3611 }
3612
3613 void wxRichTextCaret::Notify()
3614 {
3615     m_flashOn = !m_flashOn;
3616     Refresh();
3617 }
3618
3619 void wxRichTextCaretTimer::Notify()
3620 {
3621     m_caret->Notify();
3622 }
3623 #endif
3624     // wxRICHTEXT_USE_OWN_CARET
3625
3626 #endif
3627     // wxUSE_RICHTEXT