src/stc/ScintillaWX.cpp

   1 ////////////////////////////////////////////////////////////////////////////
   2 // Name:        ScintillaWX.cxx
   3 // Purpose:     A wxWidgets implementation of Scintilla.  A class derived
   4 //              from ScintillaBase that uses the "wx platform" defined in
   5 //              PlatformWX.cxx  This class is one end of a bridge between
   6 //              the wx world and the Scintilla world.  It needs a peer
   7 //              object of type wxStyledTextCtrl to function.
   8 //
   9 // Author:      Robin Dunn
  10 //
  11 // Created:     13-Jan-2000
  12 // RCS-ID:      $Id$
  13 // Copyright:   (c) 2000 by Total Control Software
  14 // Licence:     wxWindows license
  15 /////////////////////////////////////////////////////////////////////////////
  16
  17 // For compilers that support precompilation, includes "wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #ifdef __BORLANDC__
  21     #pragma hdrstop
  22 #endif
  23
  24 #if wxUSE_STC
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/scrolbar.h"
  28     #include "wx/menu.h"
  29     #include "wx/timer.h"
  30 #endif // WX_PRECOMP
  31
  32 #include "wx/textbuf.h"
  33 #include "wx/dataobj.h"
  34 #include "wx/clipbrd.h"
  35 #include "wx/dnd.h"
  36
  37 #include "ScintillaWX.h"
  38 #include "ExternalLexer.h"
  39 #include "wx/stc/stc.h"
  40 #include "wx/stc/private.h"
  41 #include "PlatWX.h"
  42
  43 #ifdef __WXMSW__
  44     // GetHwndOf()
  45     #include "wx/msw/private.h"
  46 #endif
  47
  48 //----------------------------------------------------------------------
  49 // Helper classes
  50
  51 class wxSTCTimer : public wxTimer {
  52 public:
  53     wxSTCTimer(ScintillaWX* swx) {
  54         m_swx = swx;
  55     }
  56
  57     void Notify() {
  58         m_swx->DoTick();
  59     }
  60
  61 private:
  62     ScintillaWX* m_swx;
  63 };
  64
  65
  66 #if wxUSE_DRAG_AND_DROP
  67 bool wxSTCDropTarget::OnDropText(wxCoord x, wxCoord y, const wxString& data) {
  68     return m_swx->DoDropText(x, y, data);
  69 }
  70
  71 wxDragResult  wxSTCDropTarget::OnEnter(wxCoord x, wxCoord y, wxDragResult def) {
  72     return m_swx->DoDragEnter(x, y, def);
  73 }
  74
  75 wxDragResult  wxSTCDropTarget::OnDragOver(wxCoord x, wxCoord y, wxDragResult def) {
  76     return m_swx->DoDragOver(x, y, def);
  77 }
  78
  79 void  wxSTCDropTarget::OnLeave() {
  80     m_swx->DoDragLeave();
  81 }
  82 #endif // wxUSE_DRAG_AND_DROP
  83
  84
  85 #if wxUSE_POPUPWIN
  86 #include "wx/popupwin.h"
  87 #define wxSTCCallTipBase wxPopupWindow
  88 #else
  89 #include "wx/frame.h"
  90 #define wxSTCCallTipBase wxFrame
  91 #endif
  92
  93 #include "wx/dcbuffer.h"
  94
  95 class wxSTCCallTip : public wxSTCCallTipBase {
  96 public:
  97     wxSTCCallTip(wxWindow* parent, CallTip* ct, ScintillaWX* swx) :
  98 #if wxUSE_POPUPWIN
  99         wxSTCCallTipBase(parent, wxBORDER_NONE),
 100 #else
 101         wxSTCCallTipBase(parent, -1, wxEmptyString, wxDefaultPosition, wxDefaultSize,
 102                          wxFRAME_NO_TASKBAR
 103                          | wxFRAME_FLOAT_ON_PARENT
 104                          | wxBORDER_NONE
 105 #ifdef __WXMAC__
 106                          | wxPOPUP_WINDOW
 107 #endif
 108             ),
 109 #endif
 110           m_ct(ct), m_swx(swx), m_cx(wxDefaultCoord), m_cy(wxDefaultCoord)
 111         {
 112             SetBackgroundStyle(wxBG_STYLE_CUSTOM);
 113         }
 114
 115     ~wxSTCCallTip() {
 116 #if wxUSE_POPUPWIN && defined(__WXGTK__)
 117         wxRect rect = GetRect();
 118         rect.x = m_cx;
 119         rect.y = m_cy;
 120         GetParent()->Refresh(false, &rect);
 121 #endif
 122     }
 123
 124     bool AcceptsFocus() const { return false; }
 125
 126     void OnPaint(wxPaintEvent& WXUNUSED(evt))
 127     {
 128         wxAutoBufferedPaintDC dc(this);
 129         Surface* surfaceWindow = Surface::Allocate();
 130         surfaceWindow->Init(&dc, m_ct->wDraw.GetID());
 131         m_ct->PaintCT(surfaceWindow);
 132         surfaceWindow->Release();
 133         delete surfaceWindow;
 134     }
 135
 136     void OnFocus(wxFocusEvent& event)
 137     {
 138         GetParent()->SetFocus();
 139         event.Skip();
 140     }
 141
 142     void OnLeftDown(wxMouseEvent& event)
 143     {
 144         wxPoint pt = event.GetPosition();
 145         Point p(pt.x, pt.y);
 146         m_ct->MouseClick(p);
 147         m_swx->CallTipClick();
 148     }
 149
 150     virtual void DoSetSize(int x, int y,
 151                            int width, int height,
 152                            int sizeFlags = wxSIZE_AUTO)
 153     {
 154         // convert coords to screen coords since we're a top-level window
 155         if (x != wxDefaultCoord) {
 156             m_cx = x;
 157             GetParent()->ClientToScreen(&x, NULL);
 158         }
 159         if (y != wxDefaultCoord) {
 160             m_cy = y;
 161             GetParent()->ClientToScreen(NULL, &y);
 162         }
 163         wxSTCCallTipBase::DoSetSize(x, y, width, height, sizeFlags);
 164     }
 165
 166 #if wxUSE_POPUPWIN
 167 #else
 168     virtual bool Show( bool show = true )
 169     {
 170         // Although we're a frame, we always want the parent to be active, so
 171         // raise it whenever we get shown.
 172         bool rv = wxSTCCallTipBase::Show(show);
 173         if (rv && show)
 174         {
 175             wxTopLevelWindow *frame = wxDynamicCast(
 176                 wxGetTopLevelParent(GetParent()), wxTopLevelWindow);
 177             if (frame)
 178                 frame->Raise();
 179         }
 180         return rv;
 181     }
 182 #endif
 183
 184     wxPoint GetMyPosition()
 185     {
 186         return wxPoint(m_cx, m_cy);
 187     }
 188
 189 private:
 190     CallTip*      m_ct;
 191     ScintillaWX*  m_swx;
 192     int           m_cx, m_cy;
 193     DECLARE_EVENT_TABLE()
 194 };
 195
 196 BEGIN_EVENT_TABLE(wxSTCCallTip, wxSTCCallTipBase)
 197     EVT_PAINT(wxSTCCallTip::OnPaint)
 198     EVT_SET_FOCUS(wxSTCCallTip::OnFocus)
 199     EVT_LEFT_DOWN(wxSTCCallTip::OnLeftDown)
 200 END_EVENT_TABLE()
 201
 202
 203 //----------------------------------------------------------------------
 204
 205 #if wxUSE_DATAOBJ
 206 static wxTextFileType wxConvertEOLMode(int scintillaMode)
 207 {
 208     wxTextFileType type;
 209
 210     switch (scintillaMode) {
 211         case wxSTC_EOL_CRLF:
 212             type = wxTextFileType_Dos;
 213             break;
 214
 215         case wxSTC_EOL_CR:
 216             type = wxTextFileType_Mac;
 217             break;
 218
 219         case wxSTC_EOL_LF:
 220             type = wxTextFileType_Unix;
 221             break;
 222
 223         default:
 224             type = wxTextBuffer::typeDefault;
 225             break;
 226     }
 227     return type;
 228 }
 229 #endif // wxUSE_DATAOBJ
 230
 231
 232 //----------------------------------------------------------------------
 233 // Constructor/Destructor
 234
 235
 236 ScintillaWX::ScintillaWX(wxStyledTextCtrl* win) {
 237     capturedMouse = false;
 238     focusEvent = false;
 239     wMain = win;
 240     stc   = win;
 241     wheelRotation = 0;
 242     Initialise();
 243 #ifdef __WXMSW__
 244     sysCaretBitmap = 0;
 245     sysCaretWidth = 0;
 246     sysCaretHeight = 0;
 247 #endif
 248 }
 249
 250
 251 ScintillaWX::~ScintillaWX() {
 252     Finalise();
 253 }
 254
 255 //----------------------------------------------------------------------
 256 // base class virtuals
 257
 258
 259 void ScintillaWX::Initialise() {
 260     //ScintillaBase::Initialise();
 261 #if wxUSE_DRAG_AND_DROP
 262     dropTarget = new wxSTCDropTarget;
 263     dropTarget->SetScintilla(this);
 264     stc->SetDropTarget(dropTarget);
 265 #endif // wxUSE_DRAG_AND_DROP
 266 #ifdef __WXMAC__
 267     vs.extraFontFlag = false;  // UseAntiAliasing
 268 #else
 269     vs.extraFontFlag = true;   // UseAntiAliasing
 270 #endif
 271 }
 272
 273
 274 void ScintillaWX::Finalise() {
 275     ScintillaBase::Finalise();
 276     SetTicking(false);
 277     SetIdle(false);
 278     DestroySystemCaret();
 279 }
 280
 281
 282 void ScintillaWX::StartDrag() {
 283 #if wxUSE_DRAG_AND_DROP
 284     wxString dragText = stc2wx(drag.s, drag.len);
 285
 286     // Send an event to allow the drag text to be changed
 287     wxStyledTextEvent evt(wxEVT_STC_START_DRAG, stc->GetId());
 288     evt.SetEventObject(stc);
 289     evt.SetDragText(dragText);
 290     evt.SetDragAllowMove(true);
 291     evt.SetPosition(wxMin(stc->GetSelectionStart(),
 292                           stc->GetSelectionEnd()));
 293     stc->GetEventHandler()->ProcessEvent(evt);
 294     dragText = evt.GetDragText();
 295
 296     if (dragText.length()) {
 297         wxDropSource        source(stc);
 298         wxTextDataObject    data(dragText);
 299         wxDragResult        result;
 300
 301         source.SetData(data);
 302         dropWentOutside = true;
 303         inDragDrop = ddDragging;
 304         result = source.DoDragDrop(evt.GetDragAllowMove());
 305         if (result == wxDragMove && dropWentOutside)
 306             ClearSelection();
 307         inDragDrop = ddNone;
 308         SetDragPosition(invalidPosition);
 309     }
 310 #endif // wxUSE_DRAG_AND_DROP
 311 }
 312
 313
 314 bool ScintillaWX::SetIdle(bool on) {
 315     if (idler.state != on) {
 316         // connect or disconnect the EVT_IDLE handler
 317         if (on)
 318             stc->Connect(wxID_ANY, wxEVT_IDLE,
 319                          (wxObjectEventFunction) (wxEventFunction) (wxIdleEventFunction) &wxStyledTextCtrl::OnIdle);
 320         else
 321             stc->Disconnect(wxID_ANY, wxEVT_IDLE,
 322                             (wxObjectEventFunction) (wxEventFunction) (wxIdleEventFunction) &wxStyledTextCtrl::OnIdle);
 323         idler.state = on;
 324     }
 325     return idler.state;
 326 }
 327
 328
 329 void ScintillaWX::SetTicking(bool on) {
 330     wxSTCTimer* steTimer;
 331     if (timer.ticking != on) {
 332         timer.ticking = on;
 333         if (timer.ticking) {
 334             steTimer = new wxSTCTimer(this);
 335             steTimer->Start(timer.tickSize);
 336             timer.tickerID = steTimer;
 337         } else {
 338             steTimer = (wxSTCTimer*)timer.tickerID;
 339             steTimer->Stop();
 340             delete steTimer;
 341             timer.tickerID = 0;
 342         }
 343     }
 344     timer.ticksToWait = caret.period;
 345 }
 346
 347
 348 void ScintillaWX::SetMouseCapture(bool on) {
 349     if (mouseDownCaptures) {
 350         if (on && !capturedMouse)
 351             stc->CaptureMouse();
 352         else if (!on && capturedMouse && stc->HasCapture())
 353             stc->ReleaseMouse();
 354         capturedMouse = on;
 355     }
 356 }
 357
 358
 359 bool ScintillaWX::HaveMouseCapture() {
 360     return capturedMouse;
 361 }
 362
 363
 364 void ScintillaWX::ScrollText(int linesToMove) {
 365     int dy = vs.lineHeight * (linesToMove);
 366     stc->ScrollWindow(0, dy);
 367     stc->Update();
 368 }
 369
 370 void ScintillaWX::SetVerticalScrollPos() {
 371     if (stc->m_vScrollBar == NULL) {  // Use built-in scrollbar
 372         stc->SetScrollPos(wxVERTICAL, topLine);
 373     }
 374     else { // otherwise use the one that's been given to us
 375         stc->m_vScrollBar->SetThumbPosition(topLine);
 376     }
 377 }
 378
 379 void ScintillaWX::SetHorizontalScrollPos() {
 380     if (stc->m_hScrollBar == NULL) {  // Use built-in scrollbar
 381         stc->SetScrollPos(wxHORIZONTAL, xOffset);
 382     }
 383     else { // otherwise use the one that's been given to us
 384         stc->m_hScrollBar->SetThumbPosition(xOffset);
 385     }
 386 }
 387
 388
 389 const int H_SCROLL_STEP = 20;
 390
 391 bool ScintillaWX::ModifyScrollBars(int nMax, int nPage) {
 392     bool modified = false;
 393
 394     int vertEnd = nMax;
 395     if (!verticalScrollBarVisible)
 396         vertEnd = 0;
 397
 398     // Check the vertical scrollbar
 399     if (stc->m_vScrollBar == NULL) {  // Use built-in scrollbar
 400         int  sbMax    = stc->GetScrollRange(wxVERTICAL);
 401         int  sbThumb  = stc->GetScrollThumb(wxVERTICAL);
 402         int  sbPos    = stc->GetScrollPos(wxVERTICAL);
 403         if (sbMax != vertEnd || sbThumb != nPage) {
 404             stc->SetScrollbar(wxVERTICAL, sbPos, nPage, vertEnd+1);
 405             modified = true;
 406         }
 407     }
 408     else { // otherwise use the one that's been given to us
 409         int  sbMax    = stc->m_vScrollBar->GetRange();
 410         int  sbPage   = stc->m_vScrollBar->GetPageSize();
 411         int  sbPos    = stc->m_vScrollBar->GetThumbPosition();
 412         if (sbMax != vertEnd || sbPage != nPage) {
 413             stc->m_vScrollBar->SetScrollbar(sbPos, nPage, vertEnd+1, nPage);
 414             modified = true;
 415         }
 416     }
 417
 418
 419     // Check the horizontal scrollbar
 420     PRectangle rcText = GetTextRectangle();
 421     int horizEnd = scrollWidth;
 422     if (horizEnd < 0)
 423         horizEnd = 0;
 424     if (!horizontalScrollBarVisible || (wrapState != eWrapNone))
 425         horizEnd = 0;
 426     int pageWidth = rcText.Width();
 427
 428     if (stc->m_hScrollBar == NULL) {  // Use built-in scrollbar
 429         int sbMax    = stc->GetScrollRange(wxHORIZONTAL);
 430         int sbThumb  = stc->GetScrollThumb(wxHORIZONTAL);
 431         int sbPos    = stc->GetScrollPos(wxHORIZONTAL);
 432         if ((sbMax != horizEnd) || (sbThumb != pageWidth) || (sbPos != 0)) {
 433             stc->SetScrollbar(wxHORIZONTAL, sbPos, pageWidth, horizEnd);
 434             modified = true;
 435             if (scrollWidth < pageWidth) {
 436                 HorizontalScrollTo(0);
 437             }
 438         }
 439     }
 440     else { // otherwise use the one that's been given to us
 441         int sbMax    = stc->m_hScrollBar->GetRange();
 442         int sbThumb  = stc->m_hScrollBar->GetPageSize();
 443         int sbPos    = stc->m_hScrollBar->GetThumbPosition();
 444         if ((sbMax != horizEnd) || (sbThumb != pageWidth) || (sbPos != 0)) {
 445             stc->m_hScrollBar->SetScrollbar(sbPos, pageWidth, horizEnd, pageWidth);
 446             modified = true;
 447             if (scrollWidth < pageWidth) {
 448                 HorizontalScrollTo(0);
 449             }
 450         }
 451     }
 452
 453     return modified;
 454 }
 455
 456
 457 void ScintillaWX::NotifyChange() {
 458     stc->NotifyChange();
 459 }
 460
 461
 462 void ScintillaWX::NotifyParent(SCNotification scn) {
 463     stc->NotifyParent(&scn);
 464 }
 465
 466
 467 // This method is overloaded from ScintillaBase in order to prevent the
 468 // AutoComplete window from being destroyed when it gets the focus.  There is
 469 // a side effect that the AutoComp will also not be destroyed when switching
 470 // to another window, but I think that is okay.
 471 void ScintillaWX::CancelModes() {
 472     if (! focusEvent)
 473         AutoCompleteCancel();
 474     ct.CallTipCancel();
 475     Editor::CancelModes();
 476 }
 477
 478
 479
 480 void ScintillaWX::Copy() {
 481     if (currentPos != anchor) {
 482         SelectionText st;
 483         CopySelectionRange(&st);
 484         CopyToClipboard(st);
 485     }
 486 }
 487
 488
 489 void ScintillaWX::Paste() {
 490     pdoc->BeginUndoAction();
 491     ClearSelection();
 492
 493 #if wxUSE_DATAOBJ
 494     wxTextDataObject data;
 495     bool gotData = false;
 496
 497     wxTheClipboard->UsePrimarySelection(false);
 498     if (wxTheClipboard->Open()) {
 499         gotData = wxTheClipboard->GetData(data);
 500         wxTheClipboard->Close();
 501     }
 502     if (gotData) {
 503         wxString   text = wxTextBuffer::Translate(data.GetText(),
 504                                                   wxConvertEOLMode(pdoc->eolMode));
 505         wxWX2MBbuf buf = (wxWX2MBbuf)wx2stc(text);
 506
 507 #if wxUSE_UNICODE
 508         // free up the old character buffer in case the text is real big
 509         data.SetText(wxEmptyString);
 510         text = wxEmptyString;
 511 #endif
 512         int len = strlen(buf);
 513         pdoc->InsertString(currentPos, buf, len);
 514         SetEmptySelection(currentPos + len);
 515     }
 516 #endif // wxUSE_DATAOBJ
 517
 518     pdoc->EndUndoAction();
 519     NotifyChange();
 520     Redraw();
 521 }
 522
 523
 524 void ScintillaWX::CopyToClipboard(const SelectionText& st) {
 525 #if wxUSE_CLIPBOARD
 526     if ( !st.len )
 527         return;
 528
 529     wxTheClipboard->UsePrimarySelection(false);
 530     if (wxTheClipboard->Open()) {
 531         wxString text = wxTextBuffer::Translate(stc2wx(st.s, st.len-1));
 532         wxTheClipboard->SetData(new wxTextDataObject(text));
 533         wxTheClipboard->Close();
 534     }
 535 #else
 536     wxUnusedVar(st);
 537 #endif // wxUSE_CLIPBOARD
 538 }
 539
 540
 541 bool ScintillaWX::CanPaste() {
 542 #if wxUSE_CLIPBOARD
 543     bool canPaste = false;
 544     bool didOpen;
 545
 546     if (Editor::CanPaste()) {
 547         wxTheClipboard->UsePrimarySelection(false);
 548         didOpen = !wxTheClipboard->IsOpened();
 549         if ( didOpen )
 550             wxTheClipboard->Open();
 551
 552         if (wxTheClipboard->IsOpened()) {
 553             canPaste = wxTheClipboard->IsSupported(wxUSE_UNICODE ? wxDF_UNICODETEXT : wxDF_TEXT);
 554             if (didOpen)
 555                 wxTheClipboard->Close();
 556         }
 557     }
 558     return canPaste;
 559 #else
 560     return false;
 561 #endif // wxUSE_CLIPBOARD
 562 }
 563
 564 void ScintillaWX::CreateCallTipWindow(PRectangle) {
 565     if (! ct.wCallTip.Created() ) {
 566         ct.wCallTip = new wxSTCCallTip(stc, &ct, this);
 567         ct.wDraw = ct.wCallTip;
 568     }
 569 }
 570
 571
 572 void ScintillaWX::AddToPopUp(const char *label, int cmd, bool enabled) {
 573     if (!label[0])
 574         ((wxMenu*)popup.GetID())->AppendSeparator();
 575     else
 576         ((wxMenu*)popup.GetID())->Append(cmd, wxGetTranslation(stc2wx(label)));
 577
 578     if (!enabled)
 579         ((wxMenu*)popup.GetID())->Enable(cmd, enabled);
 580 }
 581
 582
 583 // This is called by the Editor base class whenever something is selected.
 584 // For wxGTK we can put this text in the primary selection and then other apps
 585 // can paste with the middle button.
 586 void ScintillaWX::ClaimSelection() {
 587 #ifdef __WXGTK__
 588     // Put the selected text in the PRIMARY selection
 589     if (currentPos != anchor) {
 590         SelectionText st;
 591         CopySelectionRange(&st);
 592         wxTheClipboard->UsePrimarySelection(true);
 593         if (wxTheClipboard->Open()) {
 594             wxString text = stc2wx(st.s, st.len);
 595             wxTheClipboard->SetData(new wxTextDataObject(text));
 596             wxTheClipboard->Close();
 597         }
 598         wxTheClipboard->UsePrimarySelection(false);
 599     }
 600 #endif
 601 }
 602
 603
 604 void ScintillaWX::UpdateSystemCaret() {
 605 #ifdef __WXMSW__
 606     if (hasFocus) {
 607         if (HasCaretSizeChanged()) {
 608             DestroySystemCaret();
 609             CreateSystemCaret();
 610         }
 611         Point pos = LocationFromPosition(currentPos);
 612         ::SetCaretPos(pos.x, pos.y);
 613     }
 614 #endif
 615 }
 616
 617
 618 bool ScintillaWX::HasCaretSizeChanged() {
 619 #ifdef __WXMSW__
 620     if ( (vs.caretWidth && (sysCaretWidth != vs.caretWidth))
 621         || (vs.lineHeight && (sysCaretHeight != vs.lineHeight)) ) {
 622         return true;
 623     }
 624 #endif
 625     return false;
 626 }
 627
 628 bool ScintillaWX::CreateSystemCaret() {
 629 #ifdef __WXMSW__
 630     sysCaretWidth = vs.caretWidth;
 631     if (0 == sysCaretWidth) {
 632         sysCaretWidth = 1;
 633     }
 634     sysCaretHeight = vs.lineHeight;
 635     int bitmapSize = (((sysCaretWidth + 15) & ~15) >> 3) * sysCaretHeight;
 636     char *bits = new char[bitmapSize];
 637     memset(bits, 0, bitmapSize);
 638     sysCaretBitmap = ::CreateBitmap(sysCaretWidth, sysCaretHeight, 1,
 639                                     1, reinterpret_cast<BYTE *>(bits));
 640     delete [] bits;
 641     BOOL retval = ::CreateCaret(GetHwndOf(stc), sysCaretBitmap,
 642                                 sysCaretWidth, sysCaretHeight);
 643     ::ShowCaret(GetHwndOf(stc));
 644     return retval != 0;
 645 #else
 646     return false;
 647 #endif
 648 }
 649
 650 bool ScintillaWX::DestroySystemCaret() {
 651 #ifdef __WXMSW__
 652     ::HideCaret(GetHwndOf(stc));
 653     BOOL retval = ::DestroyCaret();
 654     if (sysCaretBitmap) {
 655         ::DeleteObject(sysCaretBitmap);
 656         sysCaretBitmap = 0;
 657     }
 658     return retval != 0;
 659 #else
 660     return false;
 661 #endif
 662 }
 663
 664
 665 //----------------------------------------------------------------------
 666
 667
 668 sptr_t ScintillaWX::DefWndProc(unsigned int /*iMessage*/, uptr_t /*wParam*/, sptr_t /*lParam*/) {
 669     return 0;
 670 }
 671
 672 sptr_t ScintillaWX::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 673       switch (iMessage) {
 674       case SCI_CALLTIPSHOW: {
 675           // NOTE: This is copied here from scintilla/src/ScintillaBase.cxx
 676           // because of the little tweak that needs done below for wxGTK.
 677           // When updating new versions double check that this is still
 678           // needed, and that any new code there is copied here too.
 679           Point pt = LocationFromPosition(wParam);
 680           char* defn = reinterpret_cast<char *>(lParam);
 681           AutoCompleteCancel();
 682           pt.y += vs.lineHeight;
 683           PRectangle rc = ct.CallTipStart(currentPos, pt,
 684                                           defn,
 685                                           vs.styles[STYLE_DEFAULT].fontName,
 686                                           vs.styles[STYLE_DEFAULT].sizeZoomed,
 687                                           CodePage(),
 688                                           vs.styles[STYLE_DEFAULT].characterSet,
 689                                           wMain);
 690           // If the call-tip window would be out of the client
 691           // space, adjust so it displays above the text.
 692           PRectangle rcClient = GetClientRectangle();
 693           if (rc.bottom > rcClient.bottom) {
 694 #ifdef __WXGTK__
 695               int offset = int(vs.lineHeight * 1.25)  + rc.Height();
 696 #else
 697               int offset = vs.lineHeight + rc.Height();
 698 #endif
 699               rc.top -= offset;
 700               rc.bottom -= offset;
 701           }
 702           // Now display the window.
 703           CreateCallTipWindow(rc);
 704           ct.wCallTip.SetPositionRelative(rc, wMain);
 705           ct.wCallTip.Show();
 706           break;
 707       }
 708
 709 #ifdef SCI_LEXER
 710       case SCI_LOADLEXERLIBRARY:
 711             LexerManager::GetInstance()->Load((const char*)lParam);
 712             break;
 713 #endif
 714
 715       default:
 716           return ScintillaBase::WndProc(iMessage, wParam, lParam);
 717       }
 718       return 0;
 719 }
 720
 721
 722
 723 //----------------------------------------------------------------------
 724 // Event delegates
 725
 726 void ScintillaWX::DoPaint(wxDC* dc, wxRect rect) {
 727
 728     paintState = painting;
 729     Surface* surfaceWindow = Surface::Allocate();
 730     surfaceWindow->Init(dc, wMain.GetID());
 731     rcPaint = PRectangleFromwxRect(rect);
 732     PRectangle rcClient = GetClientRectangle();
 733     paintingAllText = rcPaint.Contains(rcClient);
 734
 735     ClipChildren(*dc, rcPaint);
 736     Paint(surfaceWindow, rcPaint);
 737
 738     delete surfaceWindow;
 739     if (paintState == paintAbandoned) {
 740         // Painting area was insufficient to cover new styling or brace
 741         // highlight positions
 742         FullPaint();
 743     }
 744     paintState = notPainting;
 745 }
 746
 747
 748 void ScintillaWX::DoHScroll(int type, int pos) {
 749     int xPos = xOffset;
 750     PRectangle rcText = GetTextRectangle();
 751     int pageWidth = rcText.Width() * 2 / 3;
 752     if (type == wxEVT_SCROLLWIN_LINEUP || type == wxEVT_SCROLL_LINEUP)
 753         xPos -= H_SCROLL_STEP;
 754     else if (type == wxEVT_SCROLLWIN_LINEDOWN || type == wxEVT_SCROLL_LINEDOWN)
 755         xPos += H_SCROLL_STEP;
 756     else if (type == wxEVT_SCROLLWIN_PAGEUP || type == wxEVT_SCROLL_PAGEUP)
 757         xPos -= pageWidth;
 758     else if (type == wxEVT_SCROLLWIN_PAGEDOWN || type == wxEVT_SCROLL_PAGEDOWN) {
 759         xPos += pageWidth;
 760         if (xPos > scrollWidth - rcText.Width()) {
 761             xPos = scrollWidth - rcText.Width();
 762         }
 763     }
 764     else if (type == wxEVT_SCROLLWIN_TOP || type == wxEVT_SCROLL_TOP)
 765         xPos = 0;
 766     else if (type == wxEVT_SCROLLWIN_BOTTOM || type == wxEVT_SCROLL_BOTTOM)
 767         xPos = scrollWidth;
 768     else if (type == wxEVT_SCROLLWIN_THUMBTRACK || type == wxEVT_SCROLL_THUMBTRACK)
 769         xPos = pos;
 770
 771     HorizontalScrollTo(xPos);
 772 }
 773
 774 void ScintillaWX::DoVScroll(int type, int pos) {
 775     int topLineNew = topLine;
 776     if (type == wxEVT_SCROLLWIN_LINEUP || type == wxEVT_SCROLL_LINEUP)
 777         topLineNew -= 1;
 778     else if (type == wxEVT_SCROLLWIN_LINEDOWN || type == wxEVT_SCROLL_LINEDOWN)
 779         topLineNew += 1;
 780     else if (type ==  wxEVT_SCROLLWIN_PAGEUP || type == wxEVT_SCROLL_PAGEUP)
 781         topLineNew -= LinesToScroll();
 782     else if (type ==  wxEVT_SCROLLWIN_PAGEDOWN || type == wxEVT_SCROLL_PAGEDOWN)
 783         topLineNew += LinesToScroll();
 784     else if (type ==  wxEVT_SCROLLWIN_TOP || type == wxEVT_SCROLL_TOP)
 785         topLineNew = 0;
 786     else if (type ==  wxEVT_SCROLLWIN_BOTTOM || type == wxEVT_SCROLL_BOTTOM)
 787         topLineNew = MaxScrollPos();
 788     else if (type ==   wxEVT_SCROLLWIN_THUMBTRACK || type == wxEVT_SCROLL_THUMBTRACK)
 789         topLineNew = pos;
 790
 791     ScrollTo(topLineNew);
 792 }
 793
 794 void ScintillaWX::DoMouseWheel(int rotation, int delta,
 795                                int linesPerAction, int ctrlDown,
 796                                bool isPageScroll ) {
 797     int topLineNew = topLine;
 798     int lines;
 799
 800     if (ctrlDown) {  // Zoom the fonts if Ctrl key down
 801         if (rotation < 0) {
 802             KeyCommand(SCI_ZOOMIN);
 803         }
 804         else {
 805             KeyCommand(SCI_ZOOMOUT);
 806         }
 807     }
 808     else { // otherwise just scroll the window
 809         if ( !delta )
 810             delta = 120;
 811         wheelRotation += rotation;
 812         lines = wheelRotation / delta;
 813         wheelRotation -= lines * delta;
 814         if (lines != 0) {
 815             if (isPageScroll)
 816                 lines = lines * LinesOnScreen();  // lines is either +1 or -1
 817             else
 818                 lines *= linesPerAction;
 819             topLineNew -= lines;
 820             ScrollTo(topLineNew);
 821         }
 822     }
 823 }
 824
 825
 826 void ScintillaWX::DoSize(int WXUNUSED(width), int WXUNUSED(height)) {
 827     ChangeSize();
 828 }
 829
 830 void ScintillaWX::DoLoseFocus(){
 831     focusEvent = true;
 832     SetFocusState(false);
 833     focusEvent = false;
 834     DestroySystemCaret();
 835 }
 836
 837 void ScintillaWX::DoGainFocus(){
 838     focusEvent = true;
 839     SetFocusState(true);
 840     focusEvent = false;
 841     DestroySystemCaret();
 842     CreateSystemCaret();
 843 }
 844
 845 void ScintillaWX::DoSysColourChange() {
 846     InvalidateStyleData();
 847 }
 848
 849 void ScintillaWX::DoLeftButtonDown(Point pt, unsigned int curTime, bool shift, bool ctrl, bool alt) {
 850     ButtonDown(pt, curTime, shift, ctrl, alt);
 851 }
 852
 853 void ScintillaWX::DoLeftButtonUp(Point pt, unsigned int curTime, bool ctrl) {
 854     ButtonUp(pt, curTime, ctrl);
 855 }
 856
 857 void ScintillaWX::DoLeftButtonMove(Point pt) {
 858     ButtonMove(pt);
 859 }
 860
 861 #ifdef __WXGTK__
 862 void ScintillaWX::DoMiddleButtonUp(Point pt) {
 863     // Set the current position to the mouse click point and
 864     // then paste in the PRIMARY selection, if any.  wxGTK only.
 865     int newPos = PositionFromLocation(pt);
 866     MovePositionTo(newPos, noSel, true);
 867
 868     pdoc->BeginUndoAction();
 869     wxTextDataObject data;
 870     bool gotData = false;
 871     wxTheClipboard->UsePrimarySelection(true);
 872     if (wxTheClipboard->Open()) {
 873         gotData = wxTheClipboard->GetData(data);
 874         wxTheClipboard->Close();
 875     }
 876     wxTheClipboard->UsePrimarySelection(false);
 877     if (gotData) {
 878         wxString   text = wxTextBuffer::Translate(data.GetText(),
 879                                                   wxConvertEOLMode(pdoc->eolMode));
 880         wxWX2MBbuf buf = (wxWX2MBbuf)wx2stc(text);
 881         int        len = strlen(buf);
 882         pdoc->InsertString(currentPos, buf, len);
 883         SetEmptySelection(currentPos + len);
 884     }
 885     pdoc->EndUndoAction();
 886     NotifyChange();
 887     Redraw();
 888
 889     ShowCaretAtCurrentPosition();
 890     EnsureCaretVisible();
 891 }
 892 #else
 893 void ScintillaWX::DoMiddleButtonUp(Point WXUNUSED(pt)) {
 894 }
 895 #endif
 896
 897
 898 void ScintillaWX::DoAddChar(int key) {
 899 #if wxUSE_UNICODE
 900     wxChar wszChars[2];
 901     wszChars[0] = (wxChar)key;
 902     wszChars[1] = 0;
 903     wxWX2MBbuf buf = (wxWX2MBbuf)wx2stc(wszChars);
 904     AddCharUTF((char*)buf.data(), strlen(buf));
 905 #else
 906     AddChar((char)key);
 907 #endif
 908 }
 909
 910
 911 int  ScintillaWX::DoKeyDown(const wxKeyEvent& evt, bool* consumed)
 912 {
 913     int key = evt.GetKeyCode();
 914     bool shift = evt.ShiftDown(),
 915          ctrl  = evt.ControlDown(),
 916          alt   = evt.AltDown();
 917
 918     if (ctrl && key >= 1 && key <= 26 && key != WXK_BACK)
 919         key += 'A' - 1;
 920
 921     switch (key) {
 922     case WXK_DOWN:              key = SCK_DOWN;     break;
 923     case WXK_UP:                key = SCK_UP;       break;
 924     case WXK_LEFT:              key = SCK_LEFT;     break;
 925     case WXK_RIGHT:             key = SCK_RIGHT;    break;
 926     case WXK_HOME:              key = SCK_HOME;     break;
 927     case WXK_END:               key = SCK_END;      break;
 928     case WXK_PAGEUP:            key = SCK_PRIOR;    break;
 929     case WXK_PAGEDOWN:          key = SCK_NEXT;     break;
 930     case WXK_NUMPAD_DOWN:       key = SCK_DOWN;     break;
 931     case WXK_NUMPAD_UP:         key = SCK_UP;       break;
 932     case WXK_NUMPAD_LEFT:       key = SCK_LEFT;     break;
 933     case WXK_NUMPAD_RIGHT:      key = SCK_RIGHT;    break;
 934     case WXK_NUMPAD_HOME:       key = SCK_HOME;     break;
 935     case WXK_NUMPAD_END:        key = SCK_END;      break;
 936     case WXK_NUMPAD_PAGEUP:     key = SCK_PRIOR;    break;
 937     case WXK_NUMPAD_PAGEDOWN:   key = SCK_NEXT;     break;
 938     case WXK_NUMPAD_DELETE:     key = SCK_DELETE;   break;
 939     case WXK_NUMPAD_INSERT:     key = SCK_INSERT;   break;
 940     case WXK_DELETE:            key = SCK_DELETE;   break;
 941     case WXK_INSERT:            key = SCK_INSERT;   break;
 942     case WXK_ESCAPE:            key = SCK_ESCAPE;   break;
 943     case WXK_BACK:              key = SCK_BACK;     break;
 944     case WXK_TAB:               key = SCK_TAB;      break;
 945     case WXK_NUMPAD_ENTER:      // fall through
 946     case WXK_RETURN:            key = SCK_RETURN;   break;
 947     case WXK_ADD:               // fall through
 948     case WXK_NUMPAD_ADD:        key = SCK_ADD;      break;
 949     case WXK_SUBTRACT:          // fall through
 950     case WXK_NUMPAD_SUBTRACT:   key = SCK_SUBTRACT; break;
 951     case WXK_DIVIDE:            // fall through
 952     case WXK_NUMPAD_DIVIDE:     key = SCK_DIVIDE;   break;
 953     case WXK_CONTROL:           key = 0; break;
 954     case WXK_ALT:               key = 0; break;
 955     case WXK_SHIFT:             key = 0; break;
 956     case WXK_MENU:              key = 0; break;
 957     }
 958
 959 #ifdef __WXMAC__
 960     if ( evt.MetaDown() ) {
 961         // check for a few common Mac Meta-key combos and remap them to Ctrl
 962         // for Scintilla
 963         switch ( key ) {
 964         case 'Z':       // Undo
 965         case 'X':       // Cut
 966         case 'C':       // Copy
 967         case 'V':       // Paste
 968         case 'A':       // Select All
 969             ctrl = true;
 970             break;
 971         }
 972     }
 973 #endif
 974
 975     int rv = KeyDown(key, shift, ctrl, alt, consumed);
 976
 977     if (key)
 978         return rv;
 979     else
 980         return 1;
 981 }
 982
 983
 984 void ScintillaWX::DoCommand(int ID) {
 985     Command(ID);
 986 }
 987
 988
 989 void ScintillaWX::DoContextMenu(Point pt) {
 990     if (displayPopupMenu)
 991         ContextMenu(pt);
 992 }
 993
 994 void ScintillaWX::DoOnListBox() {
 995     AutoCompleteCompleted();
 996 }
 997
 998
 999 void ScintillaWX::DoOnIdle(wxIdleEvent& evt) {
1000
1001     if ( Idle() )
1002         evt.RequestMore();
1003     else
1004         SetIdle(false);
1005 }
1006
1007 //----------------------------------------------------------------------
1008
1009 #if wxUSE_DRAG_AND_DROP
1010 bool ScintillaWX::DoDropText(long x, long y, const wxString& data) {
1011     SetDragPosition(invalidPosition);
1012
1013     wxString text = wxTextBuffer::Translate(data,
1014                                             wxConvertEOLMode(pdoc->eolMode));
1015
1016     // Send an event to allow the drag details to be changed
1017     wxStyledTextEvent evt(wxEVT_STC_DO_DROP, stc->GetId());
1018     evt.SetEventObject(stc);
1019     evt.SetDragResult(dragResult);
1020     evt.SetX(x);
1021     evt.SetY(y);
1022     evt.SetPosition(PositionFromLocation(Point(x,y)));
1023     evt.SetDragText(text);
1024     stc->GetEventHandler()->ProcessEvent(evt);
1025
1026     dragResult = evt.GetDragResult();
1027     if (dragResult == wxDragMove || dragResult == wxDragCopy) {
1028         DropAt(evt.GetPosition(),
1029                wx2stc(evt.GetDragText()),
1030                dragResult == wxDragMove,
1031                false); // TODO: rectangular?
1032         return true;
1033     }
1034     return false;
1035 }
1036
1037
1038 wxDragResult ScintillaWX::DoDragEnter(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), wxDragResult def) {
1039     dragResult = def;
1040     return dragResult;
1041 }
1042
1043
1044 wxDragResult ScintillaWX::DoDragOver(wxCoord x, wxCoord y, wxDragResult def) {
1045     SetDragPosition(PositionFromLocation(Point(x, y)));
1046
1047     // Send an event to allow the drag result to be changed
1048     wxStyledTextEvent evt(wxEVT_STC_DRAG_OVER, stc->GetId());
1049     evt.SetEventObject(stc);
1050     evt.SetDragResult(def);
1051     evt.SetX(x);
1052     evt.SetY(y);
1053     evt.SetPosition(PositionFromLocation(Point(x,y)));
1054     stc->GetEventHandler()->ProcessEvent(evt);
1055
1056     dragResult = evt.GetDragResult();
1057     return dragResult;
1058 }
1059
1060
1061 void ScintillaWX::DoDragLeave() {
1062     SetDragPosition(invalidPosition);
1063 }
1064 #endif // wxUSE_DRAG_AND_DROP
1065 //----------------------------------------------------------------------
1066
1067 // Force the whole window to be repainted
1068 void ScintillaWX::FullPaint() {
1069 #ifndef __WXMAC__
1070     stc->Refresh(false);
1071 #endif
1072     stc->Update();
1073 }
1074
1075
1076 void ScintillaWX::DoScrollToLine(int line) {
1077     ScrollTo(line);
1078 }
1079
1080
1081 void ScintillaWX::DoScrollToColumn(int column) {
1082     HorizontalScrollTo(column * vs.spaceWidth);
1083 }
1084
1085 // wxGTK doesn't appear to need this explicit clipping code any longer, but I
1086 // will leave it here commented out for a while just in case...
1087 void ScintillaWX::ClipChildren(wxDC& WXUNUSED(dc), PRectangle WXUNUSED(rect))
1088 {
1089 //     wxRegion rgn(wxRectFromPRectangle(rect));
1090 //     if (ac.Active()) {
1091 //         wxRect childRect = ((wxWindow*)ac.lb->GetID())->GetRect();
1092 //         rgn.Subtract(childRect);
1093 //     }
1094 //     if (ct.inCallTipMode) {
1095 //         wxSTCCallTip* tip = (wxSTCCallTip*)ct.wCallTip.GetID();
1096 //         wxRect childRect = tip->GetRect();
1097 // #if wxUSE_POPUPWIN
1098 //         childRect.SetPosition(tip->GetMyPosition());
1099 // #endif
1100 //         rgn.Subtract(childRect);
1101 //     }
1102 //     dc.SetClippingRegion(rgn);
1103 }
1104
1105
1106 void ScintillaWX::SetUseAntiAliasing(bool useAA) {
1107     vs.extraFontFlag = useAA;
1108     InvalidateStyleRedraw();
1109 }
1110
1111 bool ScintillaWX::GetUseAntiAliasing() {
1112     return vs.extraFontFlag;
1113 }
1114
1115 //----------------------------------------------------------------------
1116 //----------------------------------------------------------------------
1117
1118 #endif // wxUSE_STC