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[wxWidgets.git] / src / msw / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: msw/textctrl.cpp
3 // Purpose: wxTextCtrl
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 #ifdef __GNUG__
17 #pragma implementation "textctrl.h"
18 #endif
19
20 // ----------------------------------------------------------------------------
21 // headers
22 // ----------------------------------------------------------------------------
23
24 // For compilers that support precompilation, includes "wx.h".
25 #include "wx/wxprec.h"
26
27 #ifdef __BORLANDC__
28 #pragma hdrstop
29 #endif
30
31 #if wxUSE_TEXTCTRL
32
33 #ifndef WX_PRECOMP
34 #include "wx/textctrl.h"
35 #include "wx/settings.h"
36 #include "wx/brush.h"
37 #include "wx/utils.h"
38 #include "wx/intl.h"
39 #include "wx/log.h"
40 #include "wx/app.h"
41 #include "wx/menu.h"
42 #endif
43
44 #include "wx/module.h"
45
46 #if wxUSE_CLIPBOARD
47 #include "wx/clipbrd.h"
48 #endif
49
50 #include "wx/textfile.h"
51
52 #include <windowsx.h>
53
54 #include "wx/msw/private.h"
55 #include "wx/msw/winundef.h"
56
57 #include <string.h>
58 #include <stdlib.h>
59
60 #ifndef __WXWINCE__
61 #include <sys/types.h>
62 #endif
63
64 #if wxUSE_RICHEDIT
65
66 // old mingw32 has richedit stuff directly in windows.h and doesn't have
67 // richedit.h at all
68 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
69 #include <richedit.h>
70 #endif
71
72 #include "wx/msw/missing.h"
73
74 #endif // wxUSE_RICHEDIT
75
76 // ----------------------------------------------------------------------------
77 // private functions
78 // ----------------------------------------------------------------------------
79
80 #if wxUSE_RICHEDIT
81
82 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
83
84 #endif // wxUSE_RICHEDIT
85
86 // ----------------------------------------------------------------------------
87 // private classes
88 // ----------------------------------------------------------------------------
89
90 #if wxUSE_RICHEDIT
91
92 // this module initializes RichEdit DLL(s) if needed
93 class wxRichEditModule : public wxModule
94 {
95 public:
96 virtual bool OnInit();
97 virtual void OnExit();
98
99 // load the richedit DLL of at least of required version
100 static bool Load(int version = 1);
101
102 private:
103 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
104 static HINSTANCE ms_hRichEdit[2];
105
106 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
107 };
108
109 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
110
111 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
112
113 #endif // wxUSE_RICHEDIT
114
115 // ----------------------------------------------------------------------------
116 // event tables and other macros
117 // ----------------------------------------------------------------------------
118
119 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
120
121 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
122 EVT_CHAR(wxTextCtrl::OnChar)
123 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
124
125 #if wxUSE_RICHEDIT
126 EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
127 #endif
128
129 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
130 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
131 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
132 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
133 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
134 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
135 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
136
137 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
138 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
139 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
140 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
141 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
142 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
143 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
144 #ifdef __WIN16__
145 EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
146 #endif
147
148 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
149 END_EVENT_TABLE()
150
151 // ============================================================================
152 // implementation
153 // ============================================================================
154
155 // ----------------------------------------------------------------------------
156 // creation
157 // ----------------------------------------------------------------------------
158
159 void wxTextCtrl::Init()
160 {
161 #if wxUSE_RICHEDIT
162 m_verRichEdit = 0;
163 #endif // wxUSE_RICHEDIT
164
165 m_privateContextMenu = NULL;
166 m_suppressNextUpdate = FALSE;
167 m_isNativeCaretShown = true;
168 }
169
170 wxTextCtrl::~wxTextCtrl()
171 {
172 if (m_privateContextMenu)
173 {
174 delete m_privateContextMenu;
175 m_privateContextMenu = NULL;
176 }
177 }
178
179 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
180 const wxString& value,
181 const wxPoint& pos,
182 const wxSize& size,
183 long style,
184 const wxValidator& validator,
185 const wxString& name)
186 {
187 // base initialization
188 if ( !CreateBase(parent, id, pos, size, style, validator, name) )
189 return FALSE;
190
191 if ( parent )
192 parent->AddChild(this);
193
194 // translate wxWin style flags to MSW ones
195 WXDWORD msStyle = MSWGetCreateWindowFlags();
196
197 // do create the control - either an EDIT or RICHEDIT
198 wxString windowClass = wxT("EDIT");
199
200 #if wxUSE_RICHEDIT
201 if ( m_windowStyle & wxTE_AUTO_URL )
202 {
203 // automatic URL detection only works in RichEdit 2.0+
204 m_windowStyle |= wxTE_RICH2;
205 }
206
207 if ( m_windowStyle & wxTE_RICH2 )
208 {
209 // using richedit 2.0 implies using wxTE_RICH
210 m_windowStyle |= wxTE_RICH;
211 }
212
213 // we need to load the richedit DLL before creating the rich edit control
214 if ( m_windowStyle & wxTE_RICH )
215 {
216 static bool s_errorGiven = FALSE;// MT-FIXME
217
218 // Which version do we need? Use 1.0 by default because it is much more
219 // like the the standard EDIT or 2.0 if explicitly requested, but use
220 // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
221 //
222 // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
223 // (and thus EDIT) much better than RichEdit 2.0 so we probably
224 // should use 3.0 if available as it is the best of both worlds -
225 // but as I can't test it right now I don't do it (VZ)
226 #if wxUSE_UNICODE
227 const int verRichEdit = 2;
228 #else // !wxUSE_UNICODE
229 int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
230 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
231
232 // only give the error msg once if the DLL can't be loaded
233 if ( !s_errorGiven )
234 {
235 // try to load the RichEdit DLL (will do nothing if already done)
236 if ( !wxRichEditModule::Load(verRichEdit) )
237 {
238 #if !wxUSE_UNICODE
239 // try another version?
240 verRichEdit = 3 - verRichEdit; // 1 <-> 2
241
242 if ( !wxRichEditModule::Load(verRichEdit) )
243 #endif // wxUSE_UNICODE
244 {
245 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
246
247 s_errorGiven = TRUE;
248 }
249 }
250 }
251
252 // have we managed to load any richedit version?
253 if ( !s_errorGiven )
254 {
255 m_verRichEdit = verRichEdit;
256 if ( m_verRichEdit == 1 )
257 {
258 windowClass = wxT("RICHEDIT");
259 }
260 else
261 {
262 #ifndef RICHEDIT_CLASS
263 wxString RICHEDIT_CLASS;
264 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
265 #if wxUSE_UNICODE
266 RICHEDIT_CLASS += _T('W');
267 #else // ANSI
268 RICHEDIT_CLASS += _T('A');
269 #endif // Unicode/ANSI
270 #endif // !RICHEDIT_CLASS
271
272 windowClass = RICHEDIT_CLASS;
273 }
274 }
275 }
276 #endif // wxUSE_RICHEDIT
277
278 // we need to turn '\n's into "\r\n"s for the multiline controls
279 wxString valueWin;
280 if ( m_windowStyle & wxTE_MULTILINE )
281 {
282 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
283 }
284 else // single line
285 {
286 valueWin = value;
287 }
288
289 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
290 return FALSE;
291
292 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
293
294 #if wxUSE_RICHEDIT
295 if ( IsRich() )
296 {
297 // enable the events we're interested in: we want to get EN_CHANGE as
298 // for the normal controls
299 LPARAM mask = ENM_CHANGE;
300
301 if ( GetRichVersion() == 1 )
302 {
303 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
304 // explained in its handler
305 mask |= ENM_MOUSEEVENTS;
306 }
307 else if ( m_windowStyle & wxTE_AUTO_URL )
308 {
309 mask |= ENM_LINK;
310
311 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
312 }
313
314 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
315 }
316 #endif // wxUSE_RICHEDIT
317
318 return TRUE;
319 }
320
321 // Make sure the window style (etc.) reflects the HWND style (roughly)
322 void wxTextCtrl::AdoptAttributesFromHWND()
323 {
324 wxWindow::AdoptAttributesFromHWND();
325
326 HWND hWnd = GetHwnd();
327 long style = ::GetWindowLong(hWnd, GWL_STYLE);
328
329 // retrieve the style to see whether this is an edit or richedit ctrl
330 #if wxUSE_RICHEDIT
331 wxString classname = wxGetWindowClass(GetHWND());
332
333 if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
334 {
335 m_verRichEdit = 0;
336 }
337 else // rich edit?
338 {
339 wxChar c;
340 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
341 {
342 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
343
344 m_verRichEdit = 0;
345 }
346 }
347 #endif // wxUSE_RICHEDIT
348
349 if (style & ES_MULTILINE)
350 m_windowStyle |= wxTE_MULTILINE;
351 if (style & ES_PASSWORD)
352 m_windowStyle |= wxTE_PASSWORD;
353 if (style & ES_READONLY)
354 m_windowStyle |= wxTE_READONLY;
355 if (style & ES_WANTRETURN)
356 m_windowStyle |= wxTE_PROCESS_ENTER;
357 if (style & ES_CENTER)
358 m_windowStyle |= wxTE_CENTRE;
359 if (style & ES_RIGHT)
360 m_windowStyle |= wxTE_RIGHT;
361 }
362
363 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
364 {
365 long msStyle = wxControl::MSWGetStyle(style, exstyle);
366
367 // styles which we alaways add by default
368 if ( style & wxTE_MULTILINE )
369 {
370 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
371 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
372
373 msStyle |= ES_MULTILINE | ES_WANTRETURN;
374 if ( !(style & wxTE_NO_VSCROLL) )
375 {
376 // always adjust the vertical scrollbar automatically if we have it
377 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
378
379 #if wxUSE_RICHEDIT
380 // we have to use this style for the rich edit controls because
381 // without it the vertical scrollbar never appears at all in
382 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
383 if ( style & wxTE_RICH2 )
384 {
385 msStyle |= ES_DISABLENOSCROLL;
386 }
387 #endif // wxUSE_RICHEDIT
388 }
389
390 style |= wxTE_PROCESS_ENTER;
391 }
392 else // !multiline
393 {
394 // there is really no reason to not have this style for single line
395 // text controls
396 msStyle |= ES_AUTOHSCROLL;
397 }
398
399 // styles which we add depending on the specified wxWindows styles
400 if ( style & wxHSCROLL )
401 {
402 // automatically scroll the control horizontally as necessary
403 msStyle |= WS_HSCROLL;// | ES_AUTOHSCROLL;
404 }
405
406 if ( style & wxTE_READONLY )
407 msStyle |= ES_READONLY;
408
409 if ( style & wxTE_PASSWORD )
410 msStyle |= ES_PASSWORD;
411
412 if ( style & wxTE_NOHIDESEL )
413 msStyle |= ES_NOHIDESEL;
414
415 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
416 if ( style & wxTE_CENTRE )
417 msStyle |= ES_CENTER;
418 else if ( style & wxTE_RIGHT )
419 msStyle |= ES_RIGHT;
420 else
421 msStyle |= ES_LEFT; // ES_LEFT if 0 as well but for consistency...
422
423 return msStyle;
424 }
425
426 void wxTextCtrl::SetWindowStyleFlag(long style)
427 {
428 #if wxUSE_RICHEDIT
429 // we have to deal with some styles separately because they can't be
430 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
431 // using richedit-specific EM_SETOPTIONS
432 if ( IsRich() &&
433 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
434 {
435 bool set = (style & wxTE_NOHIDESEL) != 0;
436
437 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
438 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
439 }
440 #endif // wxUSE_RICHEDIT
441
442 wxControl::SetWindowStyleFlag(style);
443 }
444
445 // ----------------------------------------------------------------------------
446 // set/get the controls text
447 // ----------------------------------------------------------------------------
448
449 wxString wxTextCtrl::GetValue() const
450 {
451 // range 0..-1 is special for GetRange() and means to retrieve all text
452 return GetRange(0, -1);
453 }
454
455 wxString wxTextCtrl::GetRange(long from, long to) const
456 {
457 wxString str;
458
459 if ( from >= to && to != -1 )
460 {
461 // nothing to retrieve
462 return str;
463 }
464
465 #if wxUSE_RICHEDIT
466 if ( IsRich() )
467 {
468 int len = GetWindowTextLength(GetHwnd());
469 if ( len > from )
470 {
471 {
472 // alloc one extra WORD as needed by the control
473 wxStringBuffer tmp(str, ++len);
474 wxChar *p = tmp;
475
476 TEXTRANGE textRange;
477 textRange.chrg.cpMin = from;
478 textRange.chrg.cpMax = to == -1 ? len : to;
479 textRange.lpstrText = p;
480
481 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE,
482 0, (LPARAM)&textRange);
483
484 if ( m_verRichEdit > 1 )
485 {
486 // RichEdit 2.0 uses just CR ('\r') for the
487 // newlines which is neither Unix nor Windows
488 // style - convert it to something reasonable
489 for ( ; *p; p++ )
490 {
491 if ( *p == _T('\r') )
492 *p = _T('\n');
493 }
494 }
495 }
496
497 if ( m_verRichEdit == 1 )
498 {
499 // convert to the canonical form - see comment below
500 str = wxTextFile::Translate(str, wxTextFileType_Unix);
501 }
502 }
503 //else: no text at all, leave the string empty
504 }
505 else
506 #endif // wxUSE_RICHEDIT
507 {
508 // retrieve all text
509 str = wxGetWindowText(GetHWND());
510
511 // need only a range?
512 if ( from < to )
513 {
514 str = str.Mid(from, to - from);
515 }
516
517 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
518 // canonical one (same one as above) for consistency with the other kinds
519 // of controls and, more importantly, with the other ports
520 str = wxTextFile::Translate(str, wxTextFileType_Unix);
521 }
522
523 return str;
524 }
525
526 void wxTextCtrl::SetValue(const wxString& value)
527 {
528 // if the text is long enough, it's faster to just set it instead of first
529 // comparing it with the old one (chances are that it will be different
530 // anyhow, this comparison is there to avoid flicker for small single-line
531 // edit controls mostly)
532 if ( (value.length() > 0x400) || (value != GetValue()) )
533 {
534 DoWriteText(value, FALSE /* not selection only */);
535 }
536
537 // we should reset the modified flag even if the value didn't really change
538
539 // mark the control as being not dirty - we changed its text, not the
540 // user
541 DiscardEdits();
542
543 // for compatibility, don't move the cursor when doing SetValue()
544 SetInsertionPoint(0);
545 }
546
547 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
548
549 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
550 {
551 *pcb = 0;
552
553 wchar_t *wbuf = (wchar_t *)buf;
554 const wchar_t *wpc = *(const wchar_t **)dwCookie;
555 while ( cb && *wpc )
556 {
557 *wbuf++ = *wpc++;
558
559 cb -= sizeof(wchar_t);
560 (*pcb) += sizeof(wchar_t);
561 }
562
563 *(const wchar_t **)dwCookie = wpc;
564
565 return 0;
566 }
567
568 // from utils.cpp
569 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
570
571 #if wxUSE_UNICODE_MSLU
572 bool wxTextCtrl::StreamIn(const wxString& value,
573 wxFontEncoding WXUNUSED(encoding),
574 bool selectionOnly)
575 {
576 const wchar_t *wpc = value.c_str();
577 #else // !wxUSE_UNICODE_MSLU
578 bool wxTextCtrl::StreamIn(const wxString& value,
579 wxFontEncoding encoding,
580 bool selectionOnly)
581 {
582 // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
583 // text in the non default charset -- otherwise it thinks it knows better
584 // than we do and always shows it in the default one
585
586 // first get the Windows code page for this encoding
587 long codepage = wxEncodingToCodepage(encoding);
588 if ( codepage == -1 )
589 {
590 // unknown encoding
591 return FALSE;
592 }
593
594 // next translate to Unicode using this code page
595 int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
596
597 #if wxUSE_WCHAR_T
598 wxWCharBuffer wchBuf(len);
599 #else
600 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
601 #endif
602
603 if ( !::MultiByteToWideChar(codepage, 0, value, -1,
604 (wchar_t *)(const wchar_t *)wchBuf, len) )
605 {
606 wxLogLastError(_T("MultiByteToWideChar"));
607 }
608
609 // finally, stream it in the control
610 const wchar_t *wpc = wchBuf;
611 #endif // wxUSE_UNICODE_MSLU
612
613 EDITSTREAM eds;
614 wxZeroMemory(eds);
615 eds.dwCookie = (DWORD)&wpc;
616 // the cast below is needed for broken (very) old mingw32 headers
617 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
618
619 // we're going to receive 2 EN_CHANGE notifications if we got any selection
620 // (same problem as in DoWriteText())
621 if ( selectionOnly && HasSelection() )
622 {
623 // so suppress one of them
624 m_suppressNextUpdate = TRUE;
625 }
626
627 ::SendMessage(GetHwnd(), EM_STREAMIN,
628 SF_TEXT |
629 SF_UNICODE |
630 (selectionOnly ? SFF_SELECTION : 0),
631 (LPARAM)&eds);
632
633 if ( eds.dwError )
634 {
635 wxLogLastError(_T("EM_STREAMIN"));
636 }
637
638 #if !wxUSE_WCHAR_T
639 free(wchBuf);
640 #endif // !wxUSE_WCHAR_T
641
642 return TRUE;
643 }
644
645 #endif // wxUSE_RICHEDIT
646
647 void wxTextCtrl::WriteText(const wxString& value)
648 {
649 DoWriteText(value);
650 }
651
652 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
653 {
654 wxString valueDos;
655 if ( m_windowStyle & wxTE_MULTILINE )
656 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
657 else
658 valueDos = value;
659
660 #if wxUSE_RICHEDIT
661 // there are several complications with the rich edit controls here
662 bool done = FALSE;
663 if ( IsRich() )
664 {
665 // first, ensure that the new text will be in the default style
666 if ( !m_defaultStyle.IsDefault() )
667 {
668 long start, end;
669 GetSelection(&start, &end);
670 SetStyle(start, end, m_defaultStyle);
671 }
672
673 #if wxUSE_UNICODE_MSLU
674 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
675 // but EM_STREAMIN works
676 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
677 {
678 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
679 }
680 #endif // wxUSE_UNICODE_MSLU
681
682 #if !wxUSE_UNICODE
683 // next check if the text we're inserting must be shown in a non
684 // default charset -- this only works for RichEdit > 1.0
685 if ( GetRichVersion() > 1 )
686 {
687 wxFont font = m_defaultStyle.GetFont();
688 if ( !font.Ok() )
689 font = GetFont();
690
691 if ( font.Ok() )
692 {
693 wxFontEncoding encoding = font.GetEncoding();
694 if ( encoding != wxFONTENCODING_SYSTEM )
695 {
696 done = StreamIn(valueDos, encoding, selectionOnly);
697 }
698 }
699 }
700 #endif // !wxUSE_UNICODE
701 }
702
703 if ( !done )
704 #endif // wxUSE_RICHEDIT
705 {
706 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
707 // call below which is confusing for the client code and so should be
708 // avoided
709 //
710 // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
711 // and there is a non empty selection currently and (b) rich text
712 // controls in any case
713 if (
714 #if wxUSE_RICHEDIT
715 IsRich() ||
716 #endif // wxUSE_RICHEDIT
717 (selectionOnly && HasSelection()) )
718 {
719 m_suppressNextUpdate = TRUE;
720 }
721
722 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
723 0, (LPARAM)valueDos.c_str());
724
725 // OTOH, non rich text controls don't generate any events at all when
726 // we use WM_SETTEXT -- have to emulate them here
727 if ( !selectionOnly
728 #if wxUSE_RICHEDIT
729 && !IsRich()
730 #endif // wxUSE_RICHEDIT
731 )
732 {
733 // Windows already sends an update event for single-line
734 // controls.
735 if ( m_windowStyle & wxTE_MULTILINE )
736 SendUpdateEvent();
737 }
738 }
739
740 AdjustSpaceLimit();
741 }
742
743 void wxTextCtrl::AppendText(const wxString& text)
744 {
745 SetInsertionPointEnd();
746
747 WriteText(text);
748
749 #if wxUSE_RICHEDIT
750 if ( IsMultiLine() && GetRichVersion() > 1 )
751 {
752 // setting the caret to the end and showing it simply doesn't work for
753 // RichEdit 2.0 -- force it to still do what we want
754 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
755 }
756 #endif // wxUSE_RICHEDIT
757 }
758
759 void wxTextCtrl::Clear()
760 {
761 ::SetWindowText(GetHwnd(), wxEmptyString);
762
763 #if wxUSE_RICHEDIT
764 if ( !IsRich() )
765 #endif // wxUSE_RICHEDIT
766 {
767 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
768 // but the normal ones don't -- make Clear() behaviour consistent by
769 // always sending this event
770
771 // Windows already sends an update event for single-line
772 // controls.
773 if ( m_windowStyle & wxTE_MULTILINE )
774 SendUpdateEvent();
775 }
776 }
777
778 #ifdef __WIN32__
779
780 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
781 {
782 SetFocus();
783
784 size_t lenOld = GetValue().length();
785
786 wxUint32 code = event.GetRawKeyCode();
787 ::keybd_event(code, 0, 0 /* key press */, 0);
788 ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
789
790 // assume that any alphanumeric key changes the total number of characters
791 // in the control - this should work in 99% of cases
792 return GetValue().length() != lenOld;
793 }
794
795 #endif // __WIN32__
796
797 // ----------------------------------------------------------------------------
798 // Clipboard operations
799 // ----------------------------------------------------------------------------
800
801 void wxTextCtrl::Copy()
802 {
803 if (CanCopy())
804 {
805 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
806 }
807 }
808
809 void wxTextCtrl::Cut()
810 {
811 if (CanCut())
812 {
813 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
814 }
815 }
816
817 void wxTextCtrl::Paste()
818 {
819 if (CanPaste())
820 {
821 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
822 }
823 }
824
825 bool wxTextCtrl::HasSelection() const
826 {
827 long from, to;
828 GetSelection(&from, &to);
829 return from != to;
830 }
831
832 bool wxTextCtrl::CanCopy() const
833 {
834 // Can copy if there's a selection
835 return HasSelection();
836 }
837
838 bool wxTextCtrl::CanCut() const
839 {
840 return CanCopy() && IsEditable();
841 }
842
843 bool wxTextCtrl::CanPaste() const
844 {
845 if ( !IsEditable() )
846 return FALSE;
847
848 #if wxUSE_RICHEDIT
849 if ( IsRich() )
850 {
851 UINT cf = 0; // 0 == any format
852
853 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
854 }
855 #endif // wxUSE_RICHEDIT
856
857 // Standard edit control: check for straight text on clipboard
858 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
859 return FALSE;
860
861 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
862 ::CloseClipboard();
863
864 return isTextAvailable;
865 }
866
867 // ----------------------------------------------------------------------------
868 // Accessors
869 // ----------------------------------------------------------------------------
870
871 void wxTextCtrl::SetEditable(bool editable)
872 {
873 HWND hWnd = GetHwnd();
874 SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
875 }
876
877 void wxTextCtrl::SetInsertionPoint(long pos)
878 {
879 DoSetSelection(pos, pos);
880 }
881
882 void wxTextCtrl::SetInsertionPointEnd()
883 {
884 // we must not do anything if the caret is already there because calling
885 // SetInsertionPoint() thaws the controls if Freeze() had been called even
886 // if it doesn't actually move the caret anywhere and so the simple fact of
887 // doing it results in horrible flicker when appending big amounts of text
888 // to the control in a few chunks (see DoAddText() test in the text sample)
889 if ( GetInsertionPoint() == GetLastPosition() )
890 return;
891
892 long pos;
893
894 #if wxUSE_RICHEDIT
895 if ( m_verRichEdit == 1 )
896 {
897 // we don't have to waste time calling GetLastPosition() in this case
898 pos = -1;
899 }
900 else // !RichEdit 1.0
901 #endif // wxUSE_RICHEDIT
902 {
903 pos = GetLastPosition();
904 }
905
906 SetInsertionPoint(pos);
907 }
908
909 long wxTextCtrl::GetInsertionPoint() const
910 {
911 #if wxUSE_RICHEDIT
912 if ( IsRich() )
913 {
914 CHARRANGE range;
915 range.cpMin = 0;
916 range.cpMax = 0;
917 SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
918 return range.cpMin;
919 }
920 #endif // wxUSE_RICHEDIT
921
922 DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
923 return Pos & 0xFFFF;
924 }
925
926 long wxTextCtrl::GetLastPosition() const
927 {
928 int numLines = GetNumberOfLines();
929 long posStartLastLine = XYToPosition(0, numLines - 1);
930
931 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
932
933 return posStartLastLine + lenLastLine;
934 }
935
936 // If the return values from and to are the same, there is no
937 // selection.
938 void wxTextCtrl::GetSelection(long* from, long* to) const
939 {
940 #if wxUSE_RICHEDIT
941 if ( IsRich() )
942 {
943 CHARRANGE charRange;
944 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
945
946 *from = charRange.cpMin;
947 *to = charRange.cpMax;
948 }
949 else
950 #endif // !wxUSE_RICHEDIT
951 {
952 DWORD dwStart, dwEnd;
953 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
954
955 *from = dwStart;
956 *to = dwEnd;
957 }
958 }
959
960 bool wxTextCtrl::IsEditable() const
961 {
962 // strangely enough, we may be called before the control is created: our
963 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
964 // us
965 if ( !m_hWnd )
966 return TRUE;
967
968 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
969
970 return (style & ES_READONLY) == 0;
971 }
972
973 // ----------------------------------------------------------------------------
974 // selection
975 // ----------------------------------------------------------------------------
976
977 void wxTextCtrl::SetSelection(long from, long to)
978 {
979 // if from and to are both -1, it means (in wxWindows) that all text should
980 // be selected - translate into Windows convention
981 if ( (from == -1) && (to == -1) )
982 {
983 from = 0;
984 to = -1;
985 }
986
987 DoSetSelection(from, to);
988 }
989
990 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
991 {
992 HWND hWnd = GetHwnd();
993
994 #ifdef __WIN32__
995 #if wxUSE_RICHEDIT
996 if ( IsRich() )
997 {
998 CHARRANGE range;
999 range.cpMin = from;
1000 range.cpMax = to;
1001 SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1002 }
1003 else
1004 #endif // wxUSE_RICHEDIT
1005 {
1006 SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1007 }
1008
1009 if ( scrollCaret )
1010 {
1011 #if wxUSE_RICHEDIT
1012 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1013 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1014 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1015 // option is set (but it does work ok in richedit 1.0 mode...)
1016 //
1017 // so to make it work we either need to give focus to it here which
1018 // will probably create many problems (dummy focus events; window
1019 // containing the text control being brought to foreground
1020 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1021 // create other problems too -- and in fact it does because if we turn
1022 // on/off this style while appending the text to the control, the
1023 // vertical scrollbar never appears in it even if we append tons of
1024 // text and to work around this the only solution I found was to use
1025 // ES_DISABLENOSCROLL
1026 //
1027 // this is very ugly but I don't see any other way to make this work
1028 if ( GetRichVersion() > 1 )
1029 {
1030 if ( !HasFlag(wxTE_NOHIDESEL) )
1031 {
1032 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1033 ECOOP_OR, ECO_NOHIDESEL);
1034 }
1035 //else: everything is already ok
1036 }
1037 #endif // wxUSE_RICHEDIT
1038
1039 SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1040
1041 #if wxUSE_RICHEDIT
1042 // restore ECO_NOHIDESEL if we changed it
1043 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1044 {
1045 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1046 ECOOP_AND, ~ECO_NOHIDESEL);
1047 }
1048 #endif // wxUSE_RICHEDIT
1049 }
1050 #else // Win16
1051 // WPARAM is 0: selection is scrolled into view
1052 SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1053 #endif // Win32/16
1054 }
1055
1056 // ----------------------------------------------------------------------------
1057 // Editing
1058 // ----------------------------------------------------------------------------
1059
1060 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1061 {
1062 // Set selection and remove it
1063 DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1064
1065 SendMessage(GetHwnd(), EM_REPLACESEL,
1066 #ifdef __WIN32__
1067 TRUE,
1068 #else
1069 FALSE,
1070 #endif
1071 (LPARAM)value.c_str());
1072 }
1073
1074 void wxTextCtrl::Remove(long from, long to)
1075 {
1076 Replace(from, to, wxEmptyString);
1077 }
1078
1079 bool wxTextCtrl::LoadFile(const wxString& file)
1080 {
1081 if ( wxTextCtrlBase::LoadFile(file) )
1082 {
1083 // update the size limit if needed
1084 AdjustSpaceLimit();
1085
1086 return TRUE;
1087 }
1088
1089 return FALSE;
1090 }
1091
1092 bool wxTextCtrl::IsModified() const
1093 {
1094 return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1095 }
1096
1097 // Makes 'unmodified'
1098 void wxTextCtrl::DiscardEdits()
1099 {
1100 SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1101 }
1102
1103 int wxTextCtrl::GetNumberOfLines() const
1104 {
1105 return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1106 }
1107
1108 long wxTextCtrl::XYToPosition(long x, long y) const
1109 {
1110 // This gets the char index for the _beginning_ of this line
1111 long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1112
1113 return charIndex + x;
1114 }
1115
1116 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1117 {
1118 HWND hWnd = GetHwnd();
1119
1120 // This gets the line number containing the character
1121 long lineNo;
1122 #if wxUSE_RICHEDIT
1123 if ( IsRich() )
1124 {
1125 lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1126 }
1127 else
1128 #endif // wxUSE_RICHEDIT
1129 {
1130 lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1131 }
1132
1133 if ( lineNo == -1 )
1134 {
1135 // no such line
1136 return FALSE;
1137 }
1138
1139 // This gets the char index for the _beginning_ of this line
1140 long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1141 if ( charIndex == -1 )
1142 {
1143 return FALSE;
1144 }
1145
1146 // The X position must therefore be the different between pos and charIndex
1147 if ( x )
1148 *x = pos - charIndex;
1149 if ( y )
1150 *y = lineNo;
1151
1152 return TRUE;
1153 }
1154
1155 void wxTextCtrl::ShowPosition(long pos)
1156 {
1157 HWND hWnd = GetHwnd();
1158
1159 // To scroll to a position, we pass the number of lines and characters
1160 // to scroll *by*. This means that we need to:
1161 // (1) Find the line position of the current line.
1162 // (2) Find the line position of pos.
1163 // (3) Scroll by (pos - current).
1164 // For now, ignore the horizontal scrolling.
1165
1166 // Is this where scrolling is relative to - the line containing the caret?
1167 // Or is the first visible line??? Try first visible line.
1168 // int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1169
1170 int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1171
1172 int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1173
1174 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1175
1176 if (linesToScroll != 0)
1177 (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1178 }
1179
1180 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1181 {
1182 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1183 }
1184
1185 int wxTextCtrl::GetLineLength(long lineNo) const
1186 {
1187 long pos = XYToPosition(0, lineNo);
1188
1189 return GetLengthOfLineContainingPos(pos);
1190 }
1191
1192 wxString wxTextCtrl::GetLineText(long lineNo) const
1193 {
1194 size_t len = (size_t)GetLineLength(lineNo) + 1;
1195
1196 // there must be at least enough place for the length WORD in the
1197 // buffer
1198 len += sizeof(WORD);
1199
1200 wxString str;
1201 {
1202 wxStringBufferLength tmp(str, len);
1203 wxChar *buf = tmp;
1204
1205 *(WORD *)buf = (WORD)len;
1206 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE,
1207 lineNo, (LPARAM)buf);
1208 buf[len] = 0;
1209 tmp.SetLength(len);
1210 }
1211
1212 return str;
1213 }
1214
1215 void wxTextCtrl::SetMaxLength(unsigned long len)
1216 {
1217 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1218 }
1219
1220 // ----------------------------------------------------------------------------
1221 // Undo/redo
1222 // ----------------------------------------------------------------------------
1223
1224 void wxTextCtrl::Undo()
1225 {
1226 if (CanUndo())
1227 {
1228 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1229 }
1230 }
1231
1232 void wxTextCtrl::Redo()
1233 {
1234 if (CanRedo())
1235 {
1236 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1237 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1238 }
1239 }
1240
1241 bool wxTextCtrl::CanUndo() const
1242 {
1243 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1244 }
1245
1246 bool wxTextCtrl::CanRedo() const
1247 {
1248 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1249 }
1250
1251 // ----------------------------------------------------------------------------
1252 // caret handling (Windows only)
1253 // ----------------------------------------------------------------------------
1254
1255 bool wxTextCtrl::ShowNativeCaret(bool show)
1256 {
1257 if ( show != m_isNativeCaretShown )
1258 {
1259 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1260 {
1261 // not an error, may simply indicate that it's not shown/hidden
1262 // yet (i.e. it had been hidden/showh 2 times before)
1263 return false;
1264 }
1265
1266 m_isNativeCaretShown = show;
1267 }
1268
1269 return true;
1270 }
1271
1272 // ----------------------------------------------------------------------------
1273 // implemenation details
1274 // ----------------------------------------------------------------------------
1275
1276 void wxTextCtrl::Command(wxCommandEvent & event)
1277 {
1278 SetValue(event.GetString());
1279 ProcessCommand (event);
1280 }
1281
1282 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1283 {
1284 // By default, load the first file into the text window.
1285 if (event.GetNumberOfFiles() > 0)
1286 {
1287 LoadFile(event.GetFiles()[0]);
1288 }
1289 }
1290
1291 // ----------------------------------------------------------------------------
1292 // kbd input processing
1293 // ----------------------------------------------------------------------------
1294
1295 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1296 {
1297 MSG *msg = (MSG *)pMsg;
1298
1299 // check for our special keys here: if we don't do it and the parent frame
1300 // uses them as accelerators, they wouldn't work at all, so we disable
1301 // usual preprocessing for them
1302 if ( msg->message == WM_KEYDOWN )
1303 {
1304 WORD vkey = (WORD) msg->wParam;
1305 if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1306 {
1307 if ( vkey == VK_BACK )
1308 return FALSE;
1309 }
1310 else // no Alt
1311 {
1312 // we want to process some Ctrl-foo and Shift-bar but no key
1313 // combinations without either Ctrl or Shift nor with both of them
1314 // pressed
1315 const int ctrl = wxIsCtrlDown(),
1316 shift = wxIsShiftDown();
1317 switch ( ctrl + shift )
1318 {
1319 default:
1320 wxFAIL_MSG( _T("how many modifiers have we got?") );
1321 // fall through
1322
1323 case 0:
1324 case 2:
1325 break;
1326
1327 case 1:
1328 // either Ctrl or Shift pressed
1329 if ( ctrl )
1330 {
1331 switch ( vkey )
1332 {
1333 case 'C':
1334 case 'V':
1335 case 'X':
1336 case VK_INSERT:
1337 case VK_DELETE:
1338 case VK_HOME:
1339 case VK_END:
1340 return FALSE;
1341 }
1342 }
1343 else // Shift is pressed
1344 {
1345 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1346 return FALSE;
1347 }
1348 }
1349 }
1350 }
1351
1352 return wxControl::MSWShouldPreProcessMessage(pMsg);
1353 }
1354
1355 void wxTextCtrl::OnChar(wxKeyEvent& event)
1356 {
1357 switch ( event.GetKeyCode() )
1358 {
1359 case WXK_RETURN:
1360 if ( !(m_windowStyle & wxTE_MULTILINE) )
1361 {
1362 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1363 InitCommandEvent(event);
1364 event.SetString(GetValue());
1365 if ( GetEventHandler()->ProcessEvent(event) )
1366 return;
1367 }
1368 //else: multiline controls need Enter for themselves
1369
1370 break;
1371
1372 case WXK_TAB:
1373 // always produce navigation event - even if we process TAB
1374 // ourselves the fact that we got here means that the user code
1375 // decided to skip processing of this TAB - probably to let it
1376 // do its default job.
1377 {
1378 wxNavigationKeyEvent eventNav;
1379 eventNav.SetDirection(!event.ShiftDown());
1380 eventNav.SetWindowChange(event.ControlDown());
1381 eventNav.SetEventObject(this);
1382
1383 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1384 return;
1385 }
1386 break;
1387 }
1388
1389 // no, we didn't process it
1390 event.Skip();
1391 }
1392
1393 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1394 {
1395 long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1396
1397 if ( nMsg == WM_GETDLGCODE )
1398 {
1399 // we always want the chars and the arrows: the arrows for navigation
1400 // and the chars because we want Ctrl-C to work even in a read only
1401 // control
1402 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1403
1404 if ( IsEditable() )
1405 {
1406 // we may have several different cases:
1407 // 1. normal case: both TAB and ENTER are used for dlg navigation
1408 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1409 // next control in the dialog
1410 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1411 // navigation
1412 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1413 // to the next control
1414
1415 // the multiline edit control should always get <Return> for itself
1416 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1417 lDlgCode |= DLGC_WANTMESSAGE;
1418
1419 if ( HasFlag(wxTE_PROCESS_TAB) )
1420 lDlgCode |= DLGC_WANTTAB;
1421
1422 lRc |= lDlgCode;
1423 }
1424 else // !editable
1425 {
1426 // NB: use "=", not "|=" as the base class version returns the
1427 // same flags is this state as usual (i.e. including
1428 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1429 // native Win32 apps?) but for now live with it.
1430 lRc = lDlgCode;
1431 }
1432 }
1433
1434 return lRc;
1435 }
1436
1437 // ----------------------------------------------------------------------------
1438 // text control event processing
1439 // ----------------------------------------------------------------------------
1440
1441 bool wxTextCtrl::SendUpdateEvent()
1442 {
1443 // is event reporting suspended?
1444 if ( m_suppressNextUpdate )
1445 {
1446 // do process the next one
1447 m_suppressNextUpdate = FALSE;
1448
1449 return FALSE;
1450 }
1451
1452 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1453 InitCommandEvent(event);
1454 event.SetString(GetValue());
1455
1456 return ProcessCommand(event);
1457 }
1458
1459 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1460 {
1461 switch ( param )
1462 {
1463 case EN_SETFOCUS:
1464 case EN_KILLFOCUS:
1465 {
1466 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1467 : wxEVT_SET_FOCUS,
1468 m_windowId);
1469 event.SetEventObject(this);
1470 GetEventHandler()->ProcessEvent(event);
1471 }
1472 break;
1473
1474 case EN_CHANGE:
1475 SendUpdateEvent();
1476 break;
1477
1478 case EN_MAXTEXT:
1479 // the text size limit has been hit -- try to increase it
1480 if ( !AdjustSpaceLimit() )
1481 {
1482 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1483 InitCommandEvent(event);
1484 event.SetString(GetValue());
1485 ProcessCommand(event);
1486 }
1487 break;
1488
1489 // the other edit notification messages are not processed
1490 default:
1491 return FALSE;
1492 }
1493
1494 // processed
1495 return TRUE;
1496 }
1497
1498 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1499 #if wxUSE_CTL3D
1500 WXUINT message,
1501 WXWPARAM wParam,
1502 WXLPARAM lParam
1503 #else
1504 WXUINT WXUNUSED(message),
1505 WXWPARAM WXUNUSED(wParam),
1506 WXLPARAM WXUNUSED(lParam)
1507 #endif
1508 )
1509 {
1510 #if wxUSE_CTL3D
1511 if ( m_useCtl3D )
1512 {
1513 HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1514 return (WXHBRUSH) hbrush;
1515 }
1516 #endif // wxUSE_CTL3D
1517
1518 HDC hdc = (HDC)pDC;
1519 wxColour colBack = GetBackgroundColour();
1520
1521 if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1522 colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1523
1524 ::SetBkColor(hdc, wxColourToRGB(colBack));
1525 ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1526
1527 wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1528
1529 return (WXHBRUSH)brush->GetResourceHandle();
1530 }
1531
1532 // In WIN16, need to override normal erasing because
1533 // Ctl3D doesn't use the wxWindows background colour.
1534 #ifdef __WIN16__
1535 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1536 {
1537 wxColour col(m_backgroundColour);
1538
1539 #if wxUSE_CTL3D
1540 if (m_useCtl3D)
1541 col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1542 #endif
1543
1544 RECT rect;
1545 ::GetClientRect(GetHwnd(), &rect);
1546
1547 COLORREF ref = wxColourToRGB(col);
1548 HBRUSH hBrush = ::CreateSolidBrush(ref);
1549 if ( !hBrush )
1550 wxLogLastError(wxT("CreateSolidBrush"));
1551
1552 HDC hdc = (HDC)event.GetDC()->GetHDC();
1553
1554 int mode = ::SetMapMode(hdc, MM_TEXT);
1555
1556 ::FillRect(hdc, &rect, hBrush);
1557 ::DeleteObject(hBrush);
1558 ::SetMapMode(hdc, mode);
1559
1560 }
1561 #endif // Win16
1562
1563 bool wxTextCtrl::AdjustSpaceLimit()
1564 {
1565 #ifndef __WIN16__
1566 unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1567
1568 // HACK: we try to automatically extend the limit for the amount of text
1569 // to allow (interactively) entering more than 64Kb of text under
1570 // Win9x but we shouldn't reset the text limit which was previously
1571 // set explicitly with SetMaxLength()
1572 //
1573 // we could solve this by storing the limit we set in wxTextCtrl but
1574 // to save space we prefer to simply test here the actual limit
1575 // value: we consider that SetMaxLength() can only be called for
1576 // values < 32Kb
1577 if ( limit < 0x8000 )
1578 {
1579 // we've got more text than limit set by SetMaxLength()
1580 return FALSE;
1581 }
1582
1583 unsigned int len = ::GetWindowTextLength(GetHwnd());
1584 if ( len >= limit )
1585 {
1586 limit = len + 0x8000; // 32Kb
1587
1588 #if wxUSE_RICHEDIT
1589 if ( IsRich() )
1590 {
1591 // as a nice side effect, this also allows passing limit > 64Kb
1592 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1593 }
1594 else
1595 #endif // wxUSE_RICHEDIT
1596 {
1597 if ( limit > 0xffff )
1598 {
1599 // this will set it to a platform-dependent maximum (much more
1600 // than 64Kb under NT)
1601 limit = 0;
1602 }
1603
1604 ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1605 }
1606 }
1607 #endif // !Win16
1608
1609 // we changed the limit
1610 return TRUE;
1611 }
1612
1613 bool wxTextCtrl::AcceptsFocus() const
1614 {
1615 // we don't want focus if we can't be edited unless we're a multiline
1616 // control because then it might be still nice to get focus from keyboard
1617 // to be able to scroll it without mouse
1618 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1619 }
1620
1621 wxSize wxTextCtrl::DoGetBestSize() const
1622 {
1623 int cx, cy;
1624 wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1625
1626 int wText = DEFAULT_ITEM_WIDTH;
1627
1628 int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1629 if ( m_windowStyle & wxTE_MULTILINE )
1630 {
1631 hText *= wxMax(GetNumberOfLines(), 5);
1632 }
1633 //else: for single line control everything is ok
1634
1635 return wxSize(wText, hText);
1636 }
1637
1638 // ----------------------------------------------------------------------------
1639 // standard handlers for standard edit menu events
1640 // ----------------------------------------------------------------------------
1641
1642 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1643 {
1644 Cut();
1645 }
1646
1647 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1648 {
1649 Copy();
1650 }
1651
1652 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1653 {
1654 Paste();
1655 }
1656
1657 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1658 {
1659 Undo();
1660 }
1661
1662 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1663 {
1664 Redo();
1665 }
1666
1667 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
1668 {
1669 long from, to;
1670 GetSelection(& from, & to);
1671 if (from != -1 && to != -1)
1672 Remove(from, to);
1673 }
1674
1675 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1676 {
1677 SetSelection(-1, -1);
1678 }
1679
1680 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1681 {
1682 event.Enable( CanCut() );
1683 }
1684
1685 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1686 {
1687 event.Enable( CanCopy() );
1688 }
1689
1690 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1691 {
1692 event.Enable( CanPaste() );
1693 }
1694
1695 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1696 {
1697 event.Enable( CanUndo() );
1698 }
1699
1700 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1701 {
1702 event.Enable( CanRedo() );
1703 }
1704
1705 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1706 {
1707 long from, to;
1708 GetSelection(& from, & to);
1709 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1710 }
1711
1712 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1713 {
1714 event.Enable(GetLastPosition() > 0);
1715 }
1716
1717 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1718 {
1719 #if wxUSE_RICHEDIT
1720 if (IsRich())
1721 {
1722 if (!m_privateContextMenu)
1723 {
1724 m_privateContextMenu = new wxMenu;
1725 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1726 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1727 m_privateContextMenu->AppendSeparator();
1728 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1729 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1730 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1731 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1732 m_privateContextMenu->AppendSeparator();
1733 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1734 }
1735 PopupMenu(m_privateContextMenu, event.GetPosition());
1736 return;
1737 }
1738 else
1739 #endif
1740 event.Skip();
1741 }
1742
1743 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
1744 {
1745 // be sure the caret remains invisible if the user had hidden it
1746 if ( !m_isNativeCaretShown )
1747 {
1748 ::HideCaret(GetHwnd());
1749 }
1750 }
1751
1752 // the rest of the file only deals with the rich edit controls
1753 #if wxUSE_RICHEDIT
1754
1755 // ----------------------------------------------------------------------------
1756 // EN_LINK processing
1757 // ----------------------------------------------------------------------------
1758
1759 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1760 {
1761 NMHDR *hdr = (NMHDR* )lParam;
1762 switch ( hdr->code )
1763 {
1764 case EN_MSGFILTER:
1765 {
1766 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1767 UINT msg = msgf->msg;
1768
1769 // this is a bit crazy but richedit 1.0 sends us all mouse
1770 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1771 // generate the wxWin events for this message manually
1772 //
1773 // NB: in fact, this is still not totally correct as it does
1774 // send us WM_LBUTTONUP if the selection was cleared by the
1775 // last click -- so currently we get 2 events in this case,
1776 // but as I don't see any obvious way to check for this I
1777 // leave this code in place because it's still better than
1778 // not getting left up events at all
1779 if ( msg == WM_LBUTTONUP )
1780 {
1781 WXUINT flags = msgf->wParam;
1782 int x = GET_X_LPARAM(msgf->lParam),
1783 y = GET_Y_LPARAM(msgf->lParam);
1784
1785 HandleMouseEvent(msg, x, y, flags);
1786 }
1787 }
1788
1789 // return TRUE to process the event (and FALSE to ignore it)
1790 return TRUE;
1791
1792 case EN_LINK:
1793 {
1794 const ENLINK *enlink = (ENLINK *)hdr;
1795
1796 switch ( enlink->msg )
1797 {
1798 case WM_SETCURSOR:
1799 // ok, so it is hardcoded - do we really nee to
1800 // customize it?
1801 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1802 *result = TRUE;
1803 break;
1804
1805 case WM_MOUSEMOVE:
1806 case WM_LBUTTONDOWN:
1807 case WM_LBUTTONUP:
1808 case WM_LBUTTONDBLCLK:
1809 case WM_RBUTTONDOWN:
1810 case WM_RBUTTONUP:
1811 case WM_RBUTTONDBLCLK:
1812 // send a mouse event
1813 {
1814 static const wxEventType eventsMouse[] =
1815 {
1816 wxEVT_MOTION,
1817 wxEVT_LEFT_DOWN,
1818 wxEVT_LEFT_UP,
1819 wxEVT_LEFT_DCLICK,
1820 wxEVT_RIGHT_DOWN,
1821 wxEVT_RIGHT_UP,
1822 wxEVT_RIGHT_DCLICK,
1823 };
1824
1825 // the event ids are consecutive
1826 wxMouseEvent
1827 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1828
1829 InitMouseEvent(evtMouse,
1830 GET_X_LPARAM(enlink->lParam),
1831 GET_Y_LPARAM(enlink->lParam),
1832 enlink->wParam);
1833
1834 wxTextUrlEvent event(m_windowId, evtMouse,
1835 enlink->chrg.cpMin,
1836 enlink->chrg.cpMax);
1837
1838 InitCommandEvent(event);
1839
1840 *result = ProcessCommand(event);
1841 }
1842 break;
1843 }
1844 }
1845 return TRUE;
1846 }
1847
1848 // not processed, leave it to the base class
1849 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1850 }
1851
1852 // ----------------------------------------------------------------------------
1853 // colour setting for the rich edit controls
1854 // ----------------------------------------------------------------------------
1855
1856 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1857 {
1858 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1859 {
1860 // colour didn't really change
1861 return FALSE;
1862 }
1863
1864 if ( IsRich() )
1865 {
1866 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1867 // EM_SETBKGNDCOLOR additionally
1868 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1869 }
1870
1871 return TRUE;
1872 }
1873
1874 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1875 {
1876 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1877 {
1878 // colour didn't really change
1879 return FALSE;
1880 }
1881
1882 if ( IsRich() )
1883 {
1884 // change the colour of everything
1885 CHARFORMAT cf;
1886 wxZeroMemory(cf);
1887 cf.cbSize = sizeof(cf);
1888 cf.dwMask = CFM_COLOR;
1889 cf.crTextColor = wxColourToRGB(colour);
1890 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1891 }
1892
1893 return TRUE;
1894 }
1895
1896 // ----------------------------------------------------------------------------
1897 // styling support for rich edit controls
1898 // ----------------------------------------------------------------------------
1899
1900 #if wxUSE_RICHEDIT
1901
1902 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1903 {
1904 if ( !IsRich() )
1905 {
1906 // can't do it with normal text control
1907 return FALSE;
1908 }
1909
1910 // the richedit 1.0 doesn't handle setting background colour, so don't
1911 // even try to do anything if it's the only thing we want to change
1912 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
1913 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
1914 !style.HasTabs() )
1915 {
1916 // nothing to do: return TRUE if there was really nothing to do and
1917 // FALSE if we failed to set bg colour
1918 return !style.HasBackgroundColour();
1919 }
1920
1921 // order the range if needed
1922 if ( start > end )
1923 {
1924 long tmp = start;
1925 start = end;
1926 end = tmp;
1927 }
1928
1929 // we can only change the format of the selection, so select the range we
1930 // want and restore the old selection later
1931 long startOld, endOld;
1932 GetSelection(&startOld, &endOld);
1933
1934 // but do we really have to change the selection?
1935 bool changeSel = start != startOld || end != endOld;
1936
1937 if ( changeSel )
1938 {
1939 DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1940 }
1941
1942 // initialize CHARFORMAT struct
1943 #if wxUSE_RICHEDIT2
1944 CHARFORMAT2 cf;
1945 #else
1946 CHARFORMAT cf;
1947 #endif
1948
1949 wxZeroMemory(cf);
1950
1951 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1952 // CHARFORMAT in that case
1953 #if wxUSE_RICHEDIT2
1954 if ( m_verRichEdit == 1 )
1955 {
1956 // this is the only thing the control is going to grok
1957 cf.cbSize = sizeof(CHARFORMAT);
1958 }
1959 else
1960 #endif
1961 {
1962 // CHARFORMAT or CHARFORMAT2
1963 cf.cbSize = sizeof(cf);
1964 }
1965
1966 if ( style.HasFont() )
1967 {
1968 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1969 // but using it doesn't seem to hurt neither so leaving it for now
1970
1971 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1972 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1973
1974 // fill in data from LOGFONT but recalculate lfHeight because we need
1975 // the real height in twips and not the negative number which
1976 // wxFillLogFont() returns (this is correct in general and works with
1977 // the Windows font mapper, but not here)
1978 LOGFONT lf;
1979 wxFillLogFont(&lf, &style.GetFont());
1980 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1981 cf.bCharSet = lf.lfCharSet;
1982 cf.bPitchAndFamily = lf.lfPitchAndFamily;
1983 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1984
1985 // also deal with underline/italic/bold attributes: note that we must
1986 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1987 // style to allow clearing it
1988 if ( lf.lfItalic )
1989 {
1990 cf.dwEffects |= CFE_ITALIC;
1991 }
1992
1993 if ( lf.lfWeight == FW_BOLD )
1994 {
1995 cf.dwEffects |= CFE_BOLD;
1996 }
1997
1998 if ( lf.lfUnderline )
1999 {
2000 cf.dwEffects |= CFE_UNDERLINE;
2001 }
2002
2003 // strikeout fonts are not supported by wxWindows
2004 }
2005
2006 if ( style.HasTextColour() )
2007 {
2008 cf.dwMask |= CFM_COLOR;
2009 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2010 }
2011
2012 #if wxUSE_RICHEDIT2
2013 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2014 {
2015 cf.dwMask |= CFM_BACKCOLOR;
2016 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2017 }
2018 #endif // wxUSE_RICHEDIT2
2019
2020 // do format the selection
2021 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2022 SCF_SELECTION, (LPARAM)&cf) != 0;
2023 if ( !ok )
2024 {
2025 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2026 }
2027
2028 // now do the paragraph formatting
2029 PARAFORMAT2 pf;
2030 wxZeroMemory(pf);
2031 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2032 // PARAFORMAT in that case
2033 #if wxUSE_RICHEDIT2
2034 if ( m_verRichEdit == 1 )
2035 {
2036 // this is the only thing the control is going to grok
2037 pf.cbSize = sizeof(PARAFORMAT);
2038 }
2039 else
2040 #endif
2041 {
2042 // PARAFORMAT or PARAFORMAT2
2043 pf.cbSize = sizeof(pf);
2044 }
2045
2046 if (style.HasAlignment())
2047 {
2048 pf.dwMask |= PFM_ALIGNMENT;
2049 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2050 pf.wAlignment = PFA_RIGHT;
2051 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2052 pf.wAlignment = PFA_CENTER;
2053 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2054 pf.wAlignment = PFA_JUSTIFY;
2055 else
2056 pf.wAlignment = PFA_LEFT;
2057 }
2058
2059 if (style.HasLeftIndent())
2060 {
2061 pf.dwMask |= PFM_STARTINDENT;
2062
2063 // Convert from 1/10 mm to TWIPS
2064 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2065
2066 // TODO: do we need to specify dxOffset?
2067 }
2068
2069 if (style.HasRightIndent())
2070 {
2071 pf.dwMask |= PFM_RIGHTINDENT;
2072
2073 // Convert from 1/10 mm to TWIPS
2074 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2075 }
2076
2077 if (style.HasTabs())
2078 {
2079 pf.dwMask |= PFM_TABSTOPS;
2080
2081 const wxArrayInt& tabs = style.GetTabs();
2082
2083 pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2084 size_t i;
2085 for (i = 0; i < (size_t) pf.cTabCount; i++)
2086 {
2087 // Convert from 1/10 mm to TWIPS
2088 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2089 }
2090 }
2091
2092 if (pf.dwMask != 0)
2093 {
2094 // do format the selection
2095 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2096 0, (LPARAM) &pf) != 0;
2097 if ( !ok )
2098 {
2099 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2100 }
2101 }
2102
2103 if ( changeSel )
2104 {
2105 // restore the original selection
2106 DoSetSelection(startOld, endOld, FALSE);
2107 }
2108
2109 return ok;
2110 }
2111
2112 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2113 {
2114 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2115 return FALSE;
2116
2117 // we have to do this or the style wouldn't apply for the text typed by the
2118 // user
2119 long posLast = GetLastPosition();
2120 SetStyle(posLast, posLast, m_defaultStyle);
2121
2122 return TRUE;
2123 }
2124
2125 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2126 {
2127 if ( !IsRich() )
2128 {
2129 // can't do it with normal text control
2130 return FALSE;
2131 }
2132
2133 // initialize CHARFORMAT struct
2134 #if wxUSE_RICHEDIT2
2135 CHARFORMAT2 cf;
2136 #else
2137 CHARFORMAT cf;
2138 #endif
2139
2140 wxZeroMemory(cf);
2141
2142 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2143 // CHARFORMAT in that case
2144 #if wxUSE_RICHEDIT2
2145 if ( m_verRichEdit == 1 )
2146 {
2147 // this is the only thing the control is going to grok
2148 cf.cbSize = sizeof(CHARFORMAT);
2149 }
2150 else
2151 #endif
2152 {
2153 // CHARFORMAT or CHARFORMAT2
2154 cf.cbSize = sizeof(cf);
2155 }
2156 // we can only change the format of the selection, so select the range we
2157 // want and restore the old selection later
2158 long startOld, endOld;
2159 GetSelection(&startOld, &endOld);
2160
2161 // but do we really have to change the selection?
2162 bool changeSel = position != startOld || position != endOld;
2163
2164 if ( changeSel )
2165 {
2166 DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2167 }
2168
2169 // get the selection formatting
2170 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2171 SCF_SELECTION, (LPARAM)&cf) ;
2172
2173 LOGFONT lf;
2174 lf.lfHeight = cf.yHeight;
2175 lf.lfWidth = 0;
2176 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2177 lf.lfClipPrecision = 0;
2178 lf.lfEscapement = 0;
2179 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2180 if (cf.dwEffects & CFE_ITALIC)
2181 lf.lfItalic = TRUE;
2182 lf.lfOrientation = 0;
2183 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2184 lf.lfQuality = 0;
2185 if (cf.dwEffects & CFE_STRIKEOUT)
2186 lf.lfStrikeOut = TRUE;
2187 if (cf.dwEffects & CFE_UNDERLINE)
2188 lf.lfUnderline = TRUE;
2189 if (cf.dwEffects & CFE_BOLD)
2190 lf.lfWeight = FW_BOLD;
2191
2192 wxFont font = wxCreateFontFromLogFont(& lf);
2193 if (font.Ok())
2194 {
2195 style.SetFont(font);
2196 }
2197 style.SetTextColour(wxColour(cf.crTextColor));
2198
2199 #if wxUSE_RICHEDIT2
2200 if ( m_verRichEdit != 1 )
2201 {
2202 // cf.dwMask |= CFM_BACKCOLOR;
2203 style.SetBackgroundColour(wxColour(cf.crBackColor));
2204 }
2205 #endif // wxUSE_RICHEDIT2
2206
2207 // now get the paragraph formatting
2208 PARAFORMAT2 pf;
2209 wxZeroMemory(pf);
2210 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2211 // PARAFORMAT in that case
2212 #if wxUSE_RICHEDIT2
2213 if ( m_verRichEdit == 1 )
2214 {
2215 // this is the only thing the control is going to grok
2216 pf.cbSize = sizeof(PARAFORMAT);
2217 }
2218 else
2219 #endif
2220 {
2221 // PARAFORMAT or PARAFORMAT2
2222 pf.cbSize = sizeof(pf);
2223 }
2224
2225 // do format the selection
2226 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2227
2228 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2229 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2230
2231 if (pf.wAlignment == PFA_CENTER)
2232 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2233 else if (pf.wAlignment == PFA_RIGHT)
2234 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2235 else if (pf.wAlignment == PFA_JUSTIFY)
2236 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2237 else
2238 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2239
2240 wxArrayInt tabStops;
2241 size_t i;
2242 for (i = 0; i < (size_t) pf.cTabCount; i++)
2243 {
2244 tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2245 }
2246
2247 if ( changeSel )
2248 {
2249 // restore the original selection
2250 DoSetSelection(startOld, endOld, FALSE);
2251 }
2252
2253 return TRUE;
2254 }
2255
2256 #endif
2257
2258 // ----------------------------------------------------------------------------
2259 // wxRichEditModule
2260 // ----------------------------------------------------------------------------
2261
2262 bool wxRichEditModule::OnInit()
2263 {
2264 // don't do anything - we will load it when needed
2265 return TRUE;
2266 }
2267
2268 void wxRichEditModule::OnExit()
2269 {
2270 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2271 {
2272 if ( ms_hRichEdit[i] )
2273 {
2274 ::FreeLibrary(ms_hRichEdit[i]);
2275 ms_hRichEdit[i] = NULL;
2276 }
2277 }
2278 }
2279
2280 /* static */
2281 bool wxRichEditModule::Load(int version)
2282 {
2283 // we don't support loading richedit 3.0 as I don't know how to distinguish
2284 // it from 2.0 anyhow
2285 wxCHECK_MSG( version == 1 || version == 2, FALSE,
2286 _T("incorrect richedit control version requested") );
2287
2288 // make it the index in the array
2289 version--;
2290
2291 if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2292 {
2293 // we had already tried to load it and failed
2294 return FALSE;
2295 }
2296
2297 if ( ms_hRichEdit[version] )
2298 {
2299 // we've already got this one
2300 return TRUE;
2301 }
2302
2303 wxString dllname = version ? _T("riched20") : _T("riched32");
2304 dllname += _T(".dll");
2305
2306 ms_hRichEdit[version] = ::LoadLibrary(dllname);
2307
2308 if ( !ms_hRichEdit[version] )
2309 {
2310 wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2311
2312 ms_hRichEdit[version] = (HINSTANCE)-1;
2313
2314 return FALSE;
2315 }
2316
2317 return TRUE;
2318 }
2319
2320 #endif // wxUSE_RICHEDIT
2321
2322 #endif // wxUSE_TEXTCTRL
wxWidgets (Impactor)