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removed DoInit() straggler from appbase mods.
[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 and Markus Holzem
9 // Licence: wxWindows license
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 #endif
42
43 #include "wx/module.h"
44
45 #if wxUSE_CLIPBOARD
46 #include "wx/clipbrd.h"
47 #endif
48
49 #include "wx/textfile.h"
50
51 #include <windowsx.h>
52
53 #include "wx/msw/private.h"
54
55 #include <string.h>
56 #include <stdlib.h>
57 #include <sys/types.h>
58
59 #if wxUSE_RICHEDIT && (!defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__))
60 #include <richedit.h>
61 #endif
62
63 // old mingw32 doesn't define this
64 #ifndef CFM_CHARSET
65 #define CFM_CHARSET 0x08000000
66 #endif // CFM_CHARSET
67
68 #ifndef CFM_BACKCOLOR
69 #define CFM_BACKCOLOR 0x04000000
70 #endif
71
72 // cygwin does not have these defined for richedit
73 #ifndef ENM_LINK
74 #define ENM_LINK 0x04000000
75 #endif
76
77 #ifndef EM_AUTOURLDETECT
78 #define EM_AUTOURLDETECT (WM_USER + 91)
79 #endif
80
81 #ifndef EN_LINK
82 #define EN_LINK 0x070b
83
84 typedef struct _enlink
85 {
86 NMHDR nmhdr;
87 UINT msg;
88 WPARAM wParam;
89 LPARAM lParam;
90 CHARRANGE chrg;
91 } ENLINK;
92 #endif // ENLINK
93
94 #ifndef SF_UNICODE
95 #define SF_UNICODE 0x0010
96 #endif
97
98 // Watcom C++ doesn't define this
99 #ifndef SCF_ALL
100 #define SCF_ALL 0x0004
101 #endif
102
103 // ----------------------------------------------------------------------------
104 // private functions
105 // ----------------------------------------------------------------------------
106
107 #if wxUSE_RICHEDIT
108
109 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
110
111 #endif // wxUSE_RICHEDIT
112
113 // ----------------------------------------------------------------------------
114 // private classes
115 // ----------------------------------------------------------------------------
116
117 #if wxUSE_RICHEDIT
118
119 // this module initializes RichEdit DLL(s) if needed
120 class wxRichEditModule : public wxModule
121 {
122 public:
123 virtual bool OnInit();
124 virtual void OnExit();
125
126 // load the richedit DLL of at least of required version
127 static bool Load(int version = 1);
128
129 private:
130 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
131 static HINSTANCE ms_hRichEdit[2];
132
133 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
134 };
135
136 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
137
138 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
139
140 #endif // wxUSE_RICHEDIT
141
142 // ----------------------------------------------------------------------------
143 // event tables and other macros
144 // ----------------------------------------------------------------------------
145
146 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
147
148 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
149 EVT_CHAR(wxTextCtrl::OnChar)
150 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
151
152 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
153 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
154 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
155 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
156 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
157
158 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
159 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
160 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
161 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
162 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
163 #ifdef __WIN16__
164 EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
165 #endif
166 END_EVENT_TABLE()
167
168 // ============================================================================
169 // implementation
170 // ============================================================================
171
172 // ----------------------------------------------------------------------------
173 // creation
174 // ----------------------------------------------------------------------------
175
176 void wxTextCtrl::Init()
177 {
178 #if wxUSE_RICHEDIT
179 m_verRichEdit = 0;
180
181 m_suppressNextUpdate = FALSE;
182 #endif // wxUSE_RICHEDIT
183 }
184
185 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
186 const wxString& value,
187 const wxPoint& pos,
188 const wxSize& size,
189 long style,
190 const wxValidator& validator,
191 const wxString& name)
192 {
193 // base initialization
194 if ( !CreateBase(parent, id, pos, size, style, validator, name) )
195 return FALSE;
196
197 if ( parent )
198 parent->AddChild(this);
199
200 // translate wxWin style flags to MSW ones
201 WXDWORD msStyle = MSWGetCreateWindowFlags();
202
203 // do create the control - either an EDIT or RICHEDIT
204 wxString windowClass = wxT("EDIT");
205
206 #if wxUSE_RICHEDIT
207 if ( m_windowStyle & wxTE_AUTO_URL )
208 {
209 // automatic URL detection only works in RichEdit 2.0+
210 m_windowStyle |= wxTE_RICH2;
211 }
212
213 if ( m_windowStyle & wxTE_RICH2 )
214 {
215 // using richedit 2.0 implies using wxTE_RICH
216 m_windowStyle |= wxTE_RICH;
217 }
218
219 // we need to load the richedit DLL before creating the rich edit control
220 if ( m_windowStyle & wxTE_RICH )
221 {
222 static bool s_errorGiven = FALSE;// MT-FIXME
223
224 // Which version do we need? Use 1.0 by default because it is much more
225 // like the the standard EDIT or 2.0 if explicitly requested, but use
226 // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
227 //
228 // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
229 // (and thus EDIT) much better than RichEdit 2.0 so we probably
230 // should use 3.0 if available as it is the best of both worlds -
231 // but as I can't test it right now I don't do it (VZ)
232 #if wxUSE_UNICODE
233 const int verRichEdit = 2;
234 #else // !wxUSE_UNICODE
235 int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
236 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
237
238 // only give the error msg once if the DLL can't be loaded
239 if ( !s_errorGiven )
240 {
241 // try to load the RichEdit DLL (will do nothing if already done)
242 if ( !wxRichEditModule::Load(verRichEdit) )
243 {
244 #if !wxUSE_UNICODE
245 // try another version?
246 verRichEdit = 3 - verRichEdit; // 1 <-> 2
247
248 if ( !wxRichEditModule::Load(verRichEdit) )
249 #endif // wxUSE_UNICODE
250 {
251 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
252
253 s_errorGiven = TRUE;
254 }
255 }
256 }
257
258 // have we managed to load any richedit version?
259 if ( !s_errorGiven )
260 {
261 msStyle |= ES_AUTOVSCROLL;
262
263 m_verRichEdit = verRichEdit;
264 if ( m_verRichEdit == 1 )
265 {
266 windowClass = wxT("RICHEDIT");
267 }
268 else
269 {
270 #ifndef RICHEDIT_CLASS
271 wxString RICHEDIT_CLASS;
272 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
273 #if wxUSE_UNICODE
274 RICHEDIT_CLASS += _T('W');
275 #else // ANSI
276 RICHEDIT_CLASS += _T('A');
277 #endif // Unicode/ANSI
278 #endif // !RICHEDIT_CLASS
279
280 windowClass = RICHEDIT_CLASS;
281 }
282 }
283 }
284 #endif // wxUSE_RICHEDIT
285
286 // we need to turn '\n's into "\r\n"s for the multiline controls
287 wxString valueWin;
288 if ( m_windowStyle & wxTE_MULTILINE )
289 {
290 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
291 }
292 else // single line
293 {
294 valueWin = value;
295 }
296
297 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
298 return FALSE;
299
300 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
301
302 #if wxUSE_RICHEDIT
303 if ( IsRich() )
304 {
305 // enable the events we're interested in: we want to get EN_CHANGE as
306 // for the normal controls
307 LPARAM mask = ENM_CHANGE;
308
309 if ( GetRichVersion() == 1 )
310 {
311 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
312 // explained in its handler
313 mask |= ENM_MOUSEEVENTS;
314 }
315 else if ( m_windowStyle & wxTE_AUTO_URL )
316 {
317 mask |= ENM_LINK;
318
319 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
320 }
321
322 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
323 }
324 #endif // wxUSE_RICHEDIT
325
326 return TRUE;
327 }
328
329 // Make sure the window style (etc.) reflects the HWND style (roughly)
330 void wxTextCtrl::AdoptAttributesFromHWND()
331 {
332 wxWindow::AdoptAttributesFromHWND();
333
334 HWND hWnd = GetHwnd();
335 long style = ::GetWindowLong(hWnd, GWL_STYLE);
336
337 // retrieve the style to see whether this is an edit or richedit ctrl
338 #if wxUSE_RICHEDIT
339 wxString classname = wxGetWindowClass(GetHWND());
340
341 if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
342 {
343 m_verRichEdit = 0;
344 }
345 else // rich edit?
346 {
347 wxChar c;
348 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
349 {
350 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
351
352 m_verRichEdit = 0;
353 }
354 }
355 #endif // wxUSE_RICHEDIT
356
357 if (style & ES_MULTILINE)
358 m_windowStyle |= wxTE_MULTILINE;
359 if (style & ES_PASSWORD)
360 m_windowStyle |= wxTE_PASSWORD;
361 if (style & ES_READONLY)
362 m_windowStyle |= wxTE_READONLY;
363 if (style & ES_WANTRETURN)
364 m_windowStyle |= wxTE_PROCESS_ENTER;
365 }
366
367 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
368 {
369 // default border for the text controls is the sunken one
370 if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
371 {
372 style |= wxBORDER_SUNKEN;
373 }
374
375 long msStyle = wxControl::MSWGetStyle(style, exstyle);
376
377 // default styles
378 msStyle |= ES_LEFT;
379
380 if ( style & wxTE_MULTILINE )
381 {
382 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
383 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
384
385 msStyle |= ES_MULTILINE | ES_WANTRETURN;
386 if ( !(style & wxTE_NO_VSCROLL) )
387 msStyle |= WS_VSCROLL;
388
389 style |= wxTE_PROCESS_ENTER;
390 }
391 else // !multiline
392 {
393 // there is really no reason to not have this style for single line
394 // text controls
395 msStyle |= ES_AUTOHSCROLL;
396 }
397
398 if ( style & wxHSCROLL )
399 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
400
401 if ( style & wxTE_READONLY )
402 msStyle |= ES_READONLY;
403
404 if ( style & wxTE_PASSWORD )
405 msStyle |= ES_PASSWORD;
406
407 if ( style & wxTE_AUTO_SCROLL )
408 msStyle |= ES_AUTOHSCROLL;
409
410 if ( style & wxTE_NOHIDESEL )
411 msStyle |= ES_NOHIDESEL;
412
413 return msStyle;
414 }
415
416 void wxTextCtrl::SetWindowStyleFlag(long style)
417 {
418 #if wxUSE_RICHEDIT
419 // we have to deal with some styles separately because they can't be
420 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
421 // using richedit-specific EM_SETOPTIONS
422 if ( IsRich() &&
423 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
424 {
425 bool set = (style & wxTE_NOHIDESEL) != 0;
426
427 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
428 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
429 }
430 #endif // wxUSE_RICHEDIT
431
432 wxControl::SetWindowStyleFlag(style);
433 }
434
435 // ----------------------------------------------------------------------------
436 // set/get the controls text
437 // ----------------------------------------------------------------------------
438
439 wxString wxTextCtrl::GetValue() const
440 {
441 // range 0..-1 is special for GetRange() and means to retrieve all text
442 return GetRange(0, -1);
443 }
444
445 wxString wxTextCtrl::GetRange(long from, long to) const
446 {
447 wxString str;
448
449 if ( from >= to && to != -1 )
450 {
451 // nothing to retrieve
452 return str;
453 }
454
455 #if wxUSE_RICHEDIT
456 if ( IsRich() )
457 {
458 int len = GetWindowTextLength(GetHwnd());
459 if ( len > from )
460 {
461 // alloc one extra WORD as needed by the control
462 wxChar *p = str.GetWriteBuf(++len);
463
464 TEXTRANGE textRange;
465 textRange.chrg.cpMin = from;
466 textRange.chrg.cpMax = to == -1 ? len : to;
467 textRange.lpstrText = p;
468
469 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
470
471 if ( m_verRichEdit > 1 )
472 {
473 // RichEdit 2.0 uses just CR ('\r') for the newlines which is
474 // neither Unix nor Windows style - convert it to something
475 // reasonable
476 for ( ; *p; p++ )
477 {
478 if ( *p == _T('\r') )
479 *p = _T('\n');
480 }
481 }
482
483 str.UngetWriteBuf();
484
485 if ( m_verRichEdit == 1 )
486 {
487 // convert to the canonical form - see comment below
488 str = wxTextFile::Translate(str, wxTextFileType_Unix);
489 }
490 }
491 //else: no text at all, leave the string empty
492 }
493 else
494 #endif // wxUSE_RICHEDIT
495 {
496 // retrieve all text
497 str = wxGetWindowText(GetHWND());
498
499 // need only a range?
500 if ( from < to )
501 {
502 str = str.Mid(from, to - from);
503 }
504
505 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
506 // canonical one (same one as above) for consistency with the other kinds
507 // of controls and, more importantly, with the other ports
508 str = wxTextFile::Translate(str, wxTextFileType_Unix);
509 }
510
511 return str;
512 }
513
514 void wxTextCtrl::SetValue(const wxString& value)
515 {
516 // if the text is long enough, it's faster to just set it instead of first
517 // comparing it with the old one (chances are that it will be different
518 // anyhow, this comparison is there to avoid flicker for small single-line
519 // edit controls mostly)
520 if ( (value.length() > 0x400) || (value != GetValue()) )
521 {
522 DoWriteText(value, FALSE /* not selection only */);
523
524 // mark the control as being not dirty - we changed its text, not the
525 // user
526 DiscardEdits();
527
528 // for compatibility, don't move the cursor when doing SetValue()
529 SetInsertionPoint(0);
530 }
531 }
532
533 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
534
535 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
536 {
537 *pcb = 0;
538
539 wchar_t *wbuf = (wchar_t *)buf;
540 const wchar_t *wpc = *(const wchar_t **)dwCookie;
541 while ( cb && *wpc )
542 {
543 *wbuf++ = *wpc++;
544
545 cb -= sizeof(wchar_t);
546 (*pcb) += sizeof(wchar_t);
547 }
548
549 *(const wchar_t **)dwCookie = wpc;
550
551 return 0;
552 }
553
554 extern long wxEncodingToCodepage(wxFontEncoding encoding); // from utils.cpp
555
556 #ifdef __WXWINE__
557 bool wxTextCtrl::StreamIn(const wxString& value,
558 wxFontEncoding WXUNUSED(encoding),
559 bool selectionOnly)
560 {
561 return FALSE;
562 }
563 #else
564
565 #if wxUSE_UNICODE_MSLU
566 bool wxTextCtrl::StreamIn(const wxString& value,
567 wxFontEncoding WXUNUSED(encoding),
568 bool selectionOnly)
569 {
570 const wchar_t *wpc = value.c_str();
571 #else // !wxUSE_UNICODE_MSLU
572 bool wxTextCtrl::StreamIn(const wxString& value,
573 wxFontEncoding encoding,
574 bool selectionOnly)
575 {
576 // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
577 // text in the non default charset - otherwise it thinks it knows better
578 // than we do and always shows it in the default one
579
580 // first get the Windows code page for this encoding
581 long codepage = wxEncodingToCodepage(encoding);
582 if ( codepage == -1 )
583 {
584 // unknown encoding
585 return FALSE;
586 }
587
588 // next translate to Unicode using this code page
589 int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
590
591 #if wxUSE_WCHAR_T
592 wxWCharBuffer wchBuf(len);
593 #else
594 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
595 #endif
596
597 if ( !::MultiByteToWideChar(codepage, 0, value, -1,
598 (wchar_t *)(const wchar_t *)wchBuf, len) )
599 {
600 wxLogLastError(_T("MultiByteToWideChar"));
601 }
602
603 // finally, stream it in the control
604 const wchar_t *wpc = wchBuf;
605 #endif // wxUSE_UNICODE_MSLU
606
607 EDITSTREAM eds;
608 wxZeroMemory(eds);
609 eds.dwCookie = (DWORD)&wpc;
610 // the cast below is needed for broken (very) old mingw32 headers
611 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
612
613 if ( !::SendMessage(GetHwnd(), EM_STREAMIN,
614 SF_TEXT |
615 SF_UNICODE |
616 (selectionOnly ? SFF_SELECTION : 0),
617 (LPARAM)&eds) || eds.dwError )
618 {
619 wxLogLastError(_T("EM_STREAMIN"));
620 }
621
622 #if !wxUSE_WCHAR_T
623 free(wchBuf);
624 #endif // !wxUSE_WCHAR_T
625
626 return TRUE;
627 }
628
629 #endif
630 // __WXWINE__
631
632 #endif // wxUSE_RICHEDIT
633
634 void wxTextCtrl::WriteText(const wxString& value)
635 {
636 DoWriteText(value);
637 }
638
639 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
640 {
641 wxString valueDos;
642 if ( m_windowStyle & wxTE_MULTILINE )
643 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
644 else
645 valueDos = value;
646
647 #if wxUSE_RICHEDIT
648 // there are several complications with the rich edit controls here
649 bool done = FALSE;
650 if ( IsRich() )
651 {
652 // first, ensure that the new text will be in the default style
653 if ( !m_defaultStyle.IsDefault() )
654 {
655 long start, end;
656 GetSelection(&start, &end);
657 SetStyle(start, end, m_defaultStyle);
658 }
659
660 #if wxUSE_UNICODE_MSLU
661 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
662 // but EM_STREAMIN works
663 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
664 {
665 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
666 }
667 #endif // wxUSE_UNICODE_MSLU
668
669 #if !wxUSE_UNICODE && !defined(__WXWINE__)
670 // next check if the text we're inserting must be shown in a non
671 // default charset -- this only works for RichEdit > 1.0
672 if ( GetRichVersion() > 1 )
673 {
674 wxFont font = m_defaultStyle.GetFont();
675 if ( !font.Ok() )
676 font = GetFont();
677
678 if ( font.Ok() )
679 {
680 wxFontEncoding encoding = font.GetEncoding();
681 if ( encoding != wxFONTENCODING_SYSTEM )
682 {
683 done = StreamIn(valueDos, encoding, selectionOnly);
684 }
685 }
686 }
687 #endif // !wxUSE_UNICODE
688 }
689
690 if ( !done )
691 #endif // wxUSE_RICHEDIT
692 {
693 #if wxUSE_RICHEDIT
694 // rich edit text control sends us 2 EN_CHANGE events when we send
695 // WM_SETTEXT to it, we have to suppress one of them to make wxTextCtrl
696 // behaviour consistent
697 if ( IsRich() )
698 {
699 m_suppressNextUpdate = TRUE;
700 }
701 #endif // wxUSE_RICHEDIT
702
703 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
704 0, (LPARAM)valueDos.c_str());
705 }
706
707 AdjustSpaceLimit();
708 }
709
710 void wxTextCtrl::AppendText(const wxString& text)
711 {
712 SetInsertionPointEnd();
713
714 WriteText(text);
715 }
716
717 void wxTextCtrl::Clear()
718 {
719 ::SetWindowText(GetHwnd(), wxT(""));
720
721 #if wxUSE_RICHEDIT
722 if ( !IsRich() )
723 #endif // wxUSE_RICHEDIT
724 {
725 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
726 // but the normal ones don't -- make Clear() behaviour consistent by
727 // always sending this event
728 SendUpdateEvent();
729 }
730 }
731
732 #ifdef __WIN32__
733
734 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
735 {
736 SetFocus();
737
738 size_t lenOld = GetValue().length();
739
740 wxUint32 code = event.GetRawKeyCode();
741 ::keybd_event(code, 0, 0 /* key press */, 0);
742 ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
743
744 // assume that any alphanumeric key changes the total number of characters
745 // in the control - this should work in 99% of cases
746 return GetValue().length() != lenOld;
747 }
748
749 #endif // __WIN32__
750
751 // ----------------------------------------------------------------------------
752 // Clipboard operations
753 // ----------------------------------------------------------------------------
754
755 void wxTextCtrl::Copy()
756 {
757 if (CanCopy())
758 {
759 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
760 }
761 }
762
763 void wxTextCtrl::Cut()
764 {
765 if (CanCut())
766 {
767 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
768 }
769 }
770
771 void wxTextCtrl::Paste()
772 {
773 if (CanPaste())
774 {
775 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
776 }
777 }
778
779 bool wxTextCtrl::CanCopy() const
780 {
781 // Can copy if there's a selection
782 long from, to;
783 GetSelection(&from, &to);
784 return from != to;
785 }
786
787 bool wxTextCtrl::CanCut() const
788 {
789 return CanCopy() && IsEditable();
790 }
791
792 bool wxTextCtrl::CanPaste() const
793 {
794 if ( !IsEditable() )
795 return FALSE;
796
797 #if wxUSE_RICHEDIT
798 if ( IsRich() )
799 {
800 UINT cf = 0; // 0 == any format
801
802 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
803 }
804 #endif // wxUSE_RICHEDIT
805
806 // Standard edit control: check for straight text on clipboard
807 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
808 return FALSE;
809
810 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
811 ::CloseClipboard();
812
813 return isTextAvailable;
814 }
815
816 // ----------------------------------------------------------------------------
817 // Accessors
818 // ----------------------------------------------------------------------------
819
820 void wxTextCtrl::SetEditable(bool editable)
821 {
822 HWND hWnd = GetHwnd();
823 SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
824 }
825
826 void wxTextCtrl::SetInsertionPoint(long pos)
827 {
828 DoSetSelection(pos, pos);
829 }
830
831 void wxTextCtrl::SetInsertionPointEnd()
832 {
833 long pos;
834
835 #if wxUSE_RICHEDIT
836 if ( m_verRichEdit == 1 )
837 {
838 // we don't have to waste time calling GetLastPosition() in this case
839 pos = -1;
840 }
841 else // !RichEdit 1.0
842 #endif // wxUSE_RICHEDIT
843 {
844 pos = GetLastPosition();
845 }
846
847 SetInsertionPoint(pos);
848 }
849
850 long wxTextCtrl::GetInsertionPoint() const
851 {
852 #if wxUSE_RICHEDIT
853 if ( IsRich() )
854 {
855 CHARRANGE range;
856 range.cpMin = 0;
857 range.cpMax = 0;
858 SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
859 return range.cpMin;
860 }
861 #endif // wxUSE_RICHEDIT
862
863 DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
864 return Pos & 0xFFFF;
865 }
866
867 long wxTextCtrl::GetLastPosition() const
868 {
869 int numLines = GetNumberOfLines();
870 long posStartLastLine = XYToPosition(0, numLines - 1);
871
872 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
873
874 return posStartLastLine + lenLastLine;
875 }
876
877 // If the return values from and to are the same, there is no
878 // selection.
879 void wxTextCtrl::GetSelection(long* from, long* to) const
880 {
881 #if wxUSE_RICHEDIT
882 if ( IsRich() )
883 {
884 CHARRANGE charRange;
885 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
886
887 *from = charRange.cpMin;
888 *to = charRange.cpMax;
889 }
890 else
891 #endif // !wxUSE_RICHEDIT
892 {
893 DWORD dwStart, dwEnd;
894 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
895
896 *from = dwStart;
897 *to = dwEnd;
898 }
899 }
900
901 bool wxTextCtrl::IsEditable() const
902 {
903 // strangely enough, we may be called before the control is created: our
904 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
905 // us
906 if ( !m_hWnd )
907 return TRUE;
908
909 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
910
911 return (style & ES_READONLY) == 0;
912 }
913
914 // ----------------------------------------------------------------------------
915 // selection
916 // ----------------------------------------------------------------------------
917
918 void wxTextCtrl::SetSelection(long from, long to)
919 {
920 // if from and to are both -1, it means (in wxWindows) that all text should
921 // be selected - translate into Windows convention
922 if ( (from == -1) && (to == -1) )
923 {
924 from = 0;
925 to = -1;
926 }
927
928 DoSetSelection(from, to);
929 }
930
931 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
932 {
933 HWND hWnd = GetHwnd();
934
935 #ifdef __WIN32__
936 #if wxUSE_RICHEDIT
937 if ( IsRich() )
938 {
939 CHARRANGE range;
940 range.cpMin = from;
941 range.cpMax = to;
942 SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
943 }
944 else
945 #endif // wxUSE_RICHEDIT
946 {
947 SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
948 }
949
950 if ( scrollCaret )
951 {
952 SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
953 }
954 #else // Win16
955 // WPARAM is 0: selection is scrolled into view
956 SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
957 #endif // Win32/16
958 }
959
960 // ----------------------------------------------------------------------------
961 // Editing
962 // ----------------------------------------------------------------------------
963
964 void wxTextCtrl::Replace(long from, long to, const wxString& value)
965 {
966 // Set selection and remove it
967 DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
968
969 SendMessage(GetHwnd(), EM_REPLACESEL,
970 #ifdef __WIN32__
971 TRUE,
972 #else
973 FALSE,
974 #endif
975 (LPARAM)value.c_str());
976 }
977
978 void wxTextCtrl::Remove(long from, long to)
979 {
980 Replace(from, to, _T(""));
981 }
982
983 bool wxTextCtrl::LoadFile(const wxString& file)
984 {
985 if ( wxTextCtrlBase::LoadFile(file) )
986 {
987 // update the size limit if needed
988 AdjustSpaceLimit();
989
990 return TRUE;
991 }
992
993 return FALSE;
994 }
995
996 bool wxTextCtrl::IsModified() const
997 {
998 return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
999 }
1000
1001 // Makes 'unmodified'
1002 void wxTextCtrl::DiscardEdits()
1003 {
1004 SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1005 }
1006
1007 int wxTextCtrl::GetNumberOfLines() const
1008 {
1009 return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1010 }
1011
1012 long wxTextCtrl::XYToPosition(long x, long y) const
1013 {
1014 // This gets the char index for the _beginning_ of this line
1015 long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1016
1017 return charIndex + x;
1018 }
1019
1020 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1021 {
1022 HWND hWnd = GetHwnd();
1023
1024 // This gets the line number containing the character
1025 long lineNo;
1026 #if wxUSE_RICHEDIT
1027 if ( IsRich() )
1028 {
1029 lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1030 }
1031 else
1032 #endif // wxUSE_RICHEDIT
1033 {
1034 lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1035 }
1036
1037 if ( lineNo == -1 )
1038 {
1039 // no such line
1040 return FALSE;
1041 }
1042
1043 // This gets the char index for the _beginning_ of this line
1044 long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1045 if ( charIndex == -1 )
1046 {
1047 return FALSE;
1048 }
1049
1050 // The X position must therefore be the different between pos and charIndex
1051 if ( x )
1052 *x = pos - charIndex;
1053 if ( y )
1054 *y = lineNo;
1055
1056 return TRUE;
1057 }
1058
1059 void wxTextCtrl::ShowPosition(long pos)
1060 {
1061 HWND hWnd = GetHwnd();
1062
1063 // To scroll to a position, we pass the number of lines and characters
1064 // to scroll *by*. This means that we need to:
1065 // (1) Find the line position of the current line.
1066 // (2) Find the line position of pos.
1067 // (3) Scroll by (pos - current).
1068 // For now, ignore the horizontal scrolling.
1069
1070 // Is this where scrolling is relative to - the line containing the caret?
1071 // Or is the first visible line??? Try first visible line.
1072 // int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1073
1074 int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1075
1076 int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1077
1078 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1079
1080 if (linesToScroll != 0)
1081 (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1082 }
1083
1084 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1085 {
1086 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1087 }
1088
1089 int wxTextCtrl::GetLineLength(long lineNo) const
1090 {
1091 long pos = XYToPosition(0, lineNo);
1092
1093 return GetLengthOfLineContainingPos(pos);
1094 }
1095
1096 wxString wxTextCtrl::GetLineText(long lineNo) const
1097 {
1098 size_t len = (size_t)GetLineLength(lineNo) + 1;
1099
1100 // there must be at least enough place for the length WORD in the
1101 // buffer
1102 len += sizeof(WORD);
1103
1104 wxString str;
1105 wxChar *buf = str.GetWriteBuf(len);
1106
1107 *(WORD *)buf = (WORD)len;
1108 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1109 buf[len] = 0;
1110
1111 str.UngetWriteBuf(len);
1112
1113 return str;
1114 }
1115
1116 void wxTextCtrl::SetMaxLength(unsigned long len)
1117 {
1118 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1119 }
1120
1121 // ----------------------------------------------------------------------------
1122 // Undo/redo
1123 // ----------------------------------------------------------------------------
1124
1125 void wxTextCtrl::Undo()
1126 {
1127 if (CanUndo())
1128 {
1129 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1130 }
1131 }
1132
1133 void wxTextCtrl::Redo()
1134 {
1135 if (CanRedo())
1136 {
1137 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1138 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1139 }
1140 }
1141
1142 bool wxTextCtrl::CanUndo() const
1143 {
1144 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1145 }
1146
1147 bool wxTextCtrl::CanRedo() const
1148 {
1149 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1150 }
1151
1152 // ----------------------------------------------------------------------------
1153 // implemenation details
1154 // ----------------------------------------------------------------------------
1155
1156 void wxTextCtrl::Command(wxCommandEvent & event)
1157 {
1158 SetValue(event.GetString());
1159 ProcessCommand (event);
1160 }
1161
1162 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1163 {
1164 // By default, load the first file into the text window.
1165 if (event.GetNumberOfFiles() > 0)
1166 {
1167 LoadFile(event.GetFiles()[0]);
1168 }
1169 }
1170
1171 // ----------------------------------------------------------------------------
1172 // kbd input processing
1173 // ----------------------------------------------------------------------------
1174
1175 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1176 {
1177 MSG *msg = (MSG *)pMsg;
1178
1179 // check for our special keys here: if we don't do it and the parent frame
1180 // uses them as accelerators, they wouldn't work at all, so we disable
1181 // usual preprocessing for them
1182 if ( msg->message == WM_KEYDOWN )
1183 {
1184 WORD vkey = (WORD) msg->wParam;
1185 if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1186 {
1187 if ( vkey == VK_BACK )
1188 return FALSE;
1189 }
1190 else // no Alt
1191 {
1192 // we want to process some Ctrl-foo and Shift-bar but no key
1193 // combinations without either Ctrl or Shift nor with both of them
1194 // pressed
1195 const int ctrl = wxIsCtrlDown(),
1196 shift = wxIsShiftDown();
1197 switch ( ctrl + shift )
1198 {
1199 default:
1200 wxFAIL_MSG( _T("how many modifiers have we got?") );
1201 // fall through
1202
1203 case 0:
1204 case 2:
1205 break;
1206
1207 case 1:
1208 // either Ctrl or Shift pressed
1209 if ( ctrl )
1210 {
1211 switch ( vkey )
1212 {
1213 case 'C':
1214 case 'V':
1215 case 'X':
1216 case VK_INSERT:
1217 case VK_DELETE:
1218 case VK_HOME:
1219 case VK_END:
1220 return FALSE;
1221 }
1222 }
1223 else // Shift is pressed
1224 {
1225 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1226 return FALSE;
1227 }
1228 }
1229 }
1230 }
1231
1232 return wxControl::MSWShouldPreProcessMessage(pMsg);
1233 }
1234
1235 void wxTextCtrl::OnChar(wxKeyEvent& event)
1236 {
1237 switch ( event.KeyCode() )
1238 {
1239 case WXK_RETURN:
1240 if ( !(m_windowStyle & wxTE_MULTILINE) )
1241 {
1242 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1243 InitCommandEvent(event);
1244 event.SetString(GetValue());
1245 if ( GetEventHandler()->ProcessEvent(event) )
1246 return;
1247 }
1248 //else: multiline controls need Enter for themselves
1249
1250 break;
1251
1252 case WXK_TAB:
1253 // always produce navigation event - even if we process TAB
1254 // ourselves the fact that we got here means that the user code
1255 // decided to skip processing of this TAB - probably to let it
1256 // do its default job.
1257 {
1258 wxNavigationKeyEvent eventNav;
1259 eventNav.SetDirection(!event.ShiftDown());
1260 eventNav.SetWindowChange(event.ControlDown());
1261 eventNav.SetEventObject(this);
1262
1263 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1264 return;
1265 }
1266 break;
1267 }
1268
1269 // no, we didn't process it
1270 event.Skip();
1271 }
1272
1273 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1274 {
1275 long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1276
1277 if ( nMsg == WM_GETDLGCODE )
1278 {
1279 // we always want the chars and the arrows
1280 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1281
1282 // we may have several different cases:
1283 // 1. normal case: both TAB and ENTER are used for dialog navigation
1284 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1285 // next control in the dialog
1286 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1287 // navigation
1288 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to pass
1289 // to the next control
1290
1291 // the multiline edit control should always get <Return> for itself
1292 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1293 lDlgCode |= DLGC_WANTMESSAGE;
1294
1295 if ( HasFlag(wxTE_PROCESS_TAB) )
1296 lDlgCode |= DLGC_WANTTAB;
1297
1298 lRc |= lDlgCode;
1299 }
1300
1301 return lRc;
1302 }
1303
1304 // ----------------------------------------------------------------------------
1305 // text control event processing
1306 // ----------------------------------------------------------------------------
1307
1308 bool wxTextCtrl::SendUpdateEvent()
1309 {
1310 // is event reporting suspended?
1311 if ( m_suppressNextUpdate )
1312 {
1313 // do process the next one
1314 m_suppressNextUpdate = FALSE;
1315
1316 return FALSE;
1317 }
1318
1319 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1320 InitCommandEvent(event);
1321 event.SetString(GetValue());
1322
1323 return ProcessCommand(event);
1324 }
1325
1326 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1327 {
1328 switch ( param )
1329 {
1330 case EN_SETFOCUS:
1331 case EN_KILLFOCUS:
1332 {
1333 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1334 : wxEVT_SET_FOCUS,
1335 m_windowId);
1336 event.SetEventObject(this);
1337 GetEventHandler()->ProcessEvent(event);
1338 }
1339 break;
1340
1341 case EN_CHANGE:
1342 SendUpdateEvent();
1343 break;
1344
1345 case EN_MAXTEXT:
1346 // the text size limit has been hit -- try to increase it
1347 if ( !AdjustSpaceLimit() )
1348 {
1349 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1350 InitCommandEvent(event);
1351 event.SetString(GetValue());
1352 ProcessCommand(event);
1353 }
1354 break;
1355
1356 // the other edit notification messages are not processed
1357 default:
1358 return FALSE;
1359 }
1360
1361 // processed
1362 return TRUE;
1363 }
1364
1365 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1366 #if wxUSE_CTL3D
1367 WXUINT message,
1368 WXWPARAM wParam,
1369 WXLPARAM lParam
1370 #else
1371 WXUINT WXUNUSED(message),
1372 WXWPARAM WXUNUSED(wParam),
1373 WXLPARAM WXUNUSED(lParam)
1374 #endif
1375 )
1376 {
1377 #if wxUSE_CTL3D
1378 if ( m_useCtl3D )
1379 {
1380 HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1381 return (WXHBRUSH) hbrush;
1382 }
1383 #endif // wxUSE_CTL3D
1384
1385 HDC hdc = (HDC)pDC;
1386 if (GetParent()->GetTransparentBackground())
1387 SetBkMode(hdc, TRANSPARENT);
1388 else
1389 SetBkMode(hdc, OPAQUE);
1390
1391 wxColour colBack = GetBackgroundColour();
1392
1393 if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1394 colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1395
1396 ::SetBkColor(hdc, wxColourToRGB(colBack));
1397 ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1398
1399 wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1400
1401 return (WXHBRUSH)brush->GetResourceHandle();
1402 }
1403
1404 // In WIN16, need to override normal erasing because
1405 // Ctl3D doesn't use the wxWindows background colour.
1406 #ifdef __WIN16__
1407 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1408 {
1409 wxColour col(m_backgroundColour);
1410
1411 #if wxUSE_CTL3D
1412 if (m_useCtl3D)
1413 col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1414 #endif
1415
1416 RECT rect;
1417 ::GetClientRect(GetHwnd(), &rect);
1418
1419 COLORREF ref = wxColourToRGB(col);
1420 HBRUSH hBrush = ::CreateSolidBrush(ref);
1421 if ( !hBrush )
1422 wxLogLastError(wxT("CreateSolidBrush"));
1423
1424 HDC hdc = (HDC)event.GetDC()->GetHDC();
1425
1426 int mode = ::SetMapMode(hdc, MM_TEXT);
1427
1428 ::FillRect(hdc, &rect, hBrush);
1429 ::DeleteObject(hBrush);
1430 ::SetMapMode(hdc, mode);
1431
1432 }
1433 #endif // Win16
1434
1435 bool wxTextCtrl::AdjustSpaceLimit()
1436 {
1437 #ifndef __WIN16__
1438 unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1439
1440 // HACK: we try to automatically extend the limit for the amount of text
1441 // to allow (interactively) entering more than 64Kb of text under
1442 // Win9x but we shouldn't reset the text limit which was previously
1443 // set explicitly with SetMaxLength()
1444 //
1445 // we could solve this by storing the limit we set in wxTextCtrl but
1446 // to save space we prefer to simply test here the actual limit
1447 // value: we consider that SetMaxLength() can only be called for
1448 // values < 32Kb
1449 if ( limit < 0x8000 )
1450 {
1451 // we've got more text than limit set by SetMaxLength()
1452 return FALSE;
1453 }
1454
1455 unsigned int len = ::GetWindowTextLength(GetHwnd());
1456 if ( len >= limit )
1457 {
1458 limit = len + 0x8000; // 32Kb
1459
1460 #if wxUSE_RICHEDIT
1461 if ( IsRich() )
1462 {
1463 // as a nice side effect, this also allows passing limit > 64Kb
1464 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1465 }
1466 else
1467 #endif // wxUSE_RICHEDIT
1468 {
1469 if ( limit > 0xffff )
1470 {
1471 // this will set it to a platform-dependent maximum (much more
1472 // than 64Kb under NT)
1473 limit = 0;
1474 }
1475
1476 ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1477 }
1478 }
1479 #endif // !Win16
1480
1481 // we changed the limit
1482 return TRUE;
1483 }
1484
1485 bool wxTextCtrl::AcceptsFocus() const
1486 {
1487 // we don't want focus if we can't be edited
1488 return IsEditable() && wxControl::AcceptsFocus();
1489 }
1490
1491 wxSize wxTextCtrl::DoGetBestSize() const
1492 {
1493 int cx, cy;
1494 wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1495
1496 int wText = DEFAULT_ITEM_WIDTH;
1497
1498 int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1499 if ( m_windowStyle & wxTE_MULTILINE )
1500 {
1501 hText *= wxMax(GetNumberOfLines(), 5);
1502 }
1503 //else: for single line control everything is ok
1504
1505 return wxSize(wText, hText);
1506 }
1507
1508 // ----------------------------------------------------------------------------
1509 // standard handlers for standard edit menu events
1510 // ----------------------------------------------------------------------------
1511
1512 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1513 {
1514 Cut();
1515 }
1516
1517 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1518 {
1519 Copy();
1520 }
1521
1522 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1523 {
1524 Paste();
1525 }
1526
1527 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1528 {
1529 Undo();
1530 }
1531
1532 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1533 {
1534 Redo();
1535 }
1536
1537 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1538 {
1539 event.Enable( CanCut() );
1540 }
1541
1542 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1543 {
1544 event.Enable( CanCopy() );
1545 }
1546
1547 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1548 {
1549 event.Enable( CanPaste() );
1550 }
1551
1552 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1553 {
1554 event.Enable( CanUndo() );
1555 }
1556
1557 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1558 {
1559 event.Enable( CanRedo() );
1560 }
1561
1562 // the rest of the file only deals with the rich edit controls
1563 #if wxUSE_RICHEDIT
1564
1565 // ----------------------------------------------------------------------------
1566 // EN_LINK processing
1567 // ----------------------------------------------------------------------------
1568
1569 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1570 {
1571 #ifndef __WXWINE__
1572 NMHDR *hdr = (NMHDR* )lParam;
1573 switch ( hdr->code )
1574 {
1575 case EN_MSGFILTER:
1576 {
1577 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1578 UINT msg = msgf->msg;
1579
1580 // this is a bit crazy but richedit 1.0 sends us all mouse
1581 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1582 // generate the wxWin events for this message manually
1583 //
1584 // NB: in fact, this is still not totally correct as it does
1585 // send us WM_LBUTTONUP if the selection was cleared by the
1586 // last click -- so currently we get 2 events in this case,
1587 // but as I don't see any obvious way to check for this I
1588 // leave this code in place because it's still better than
1589 // not getting left up events at all
1590 if ( msg == WM_LBUTTONUP )
1591 {
1592 WXUINT flags = msgf->wParam;
1593 int x = GET_X_LPARAM(msgf->lParam),
1594 y = GET_Y_LPARAM(msgf->lParam);
1595
1596 HandleMouseEvent(msg, x, y, flags);
1597 }
1598 }
1599
1600 // return TRUE to process the event (and FALSE to ignore it)
1601 return TRUE;
1602
1603 case EN_LINK:
1604 {
1605 const ENLINK *enlink = (ENLINK *)hdr;
1606
1607 switch ( enlink->msg )
1608 {
1609 case WM_SETCURSOR:
1610 // ok, so it is hardcoded - do we really nee to
1611 // customize it?
1612 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1613 *result = TRUE;
1614 break;
1615
1616 case WM_MOUSEMOVE:
1617 case WM_LBUTTONDOWN:
1618 case WM_LBUTTONUP:
1619 case WM_LBUTTONDBLCLK:
1620 case WM_RBUTTONDOWN:
1621 case WM_RBUTTONUP:
1622 case WM_RBUTTONDBLCLK:
1623 // send a mouse event
1624 {
1625 static const wxEventType eventsMouse[] =
1626 {
1627 wxEVT_MOTION,
1628 wxEVT_LEFT_DOWN,
1629 wxEVT_LEFT_UP,
1630 wxEVT_LEFT_DCLICK,
1631 wxEVT_RIGHT_DOWN,
1632 wxEVT_RIGHT_UP,
1633 wxEVT_RIGHT_DCLICK,
1634 };
1635
1636 // the event ids are consecutive
1637 wxMouseEvent
1638 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1639
1640 InitMouseEvent(evtMouse,
1641 GET_X_LPARAM(enlink->lParam),
1642 GET_Y_LPARAM(enlink->lParam),
1643 enlink->wParam);
1644
1645 wxTextUrlEvent event(m_windowId, evtMouse,
1646 enlink->chrg.cpMin,
1647 enlink->chrg.cpMax);
1648
1649 InitCommandEvent(event);
1650
1651 *result = ProcessCommand(event);
1652 }
1653 break;
1654 }
1655 }
1656 return TRUE;
1657 }
1658 #endif
1659
1660 // not processed, leave it to the base class
1661 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1662 }
1663
1664 // ----------------------------------------------------------------------------
1665 // colour setting for the rich edit controls
1666 // ----------------------------------------------------------------------------
1667
1668 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1669 {
1670 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1671 {
1672 // colour didn't really change
1673 return FALSE;
1674 }
1675
1676 if ( IsRich() )
1677 {
1678 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1679 // EM_SETBKGNDCOLOR additionally
1680 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1681 }
1682
1683 return TRUE;
1684 }
1685
1686 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1687 {
1688 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1689 {
1690 // colour didn't really change
1691 return FALSE;
1692 }
1693
1694 if ( IsRich() )
1695 {
1696 // change the colour of everything
1697 CHARFORMAT cf;
1698 wxZeroMemory(cf);
1699 cf.cbSize = sizeof(cf);
1700 cf.dwMask = CFM_COLOR;
1701 cf.crTextColor = wxColourToRGB(colour);
1702 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1703 }
1704
1705 return TRUE;
1706 }
1707
1708 // ----------------------------------------------------------------------------
1709 // styling support for rich edit controls
1710 // ----------------------------------------------------------------------------
1711
1712 #if wxUSE_RICHEDIT
1713
1714 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1715 {
1716 #ifdef __WXWINE__
1717 return FALSE;
1718 #else
1719 if ( !IsRich() )
1720 {
1721 // can't do it with normal text control
1722 return FALSE;
1723 }
1724
1725 // the richedit 1.0 doesn't handle setting background colour, so don't
1726 // even try to do anything if it's the only thing we want to change
1727 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() )
1728 {
1729 // nothing to do: return TRUE if there was really nothing to do and
1730 // FALSE if we failed to set bg colour
1731 return !style.HasBackgroundColour();
1732 }
1733
1734 // order the range if needed
1735 if ( start > end )
1736 {
1737 long tmp = start;
1738 start = end;
1739 end = tmp;
1740 }
1741
1742 // we can only change the format of the selection, so select the range we
1743 // want and restore the old selection later
1744 long startOld, endOld;
1745 GetSelection(&startOld, &endOld);
1746
1747 // but do we really have to change the selection?
1748 bool changeSel = start != startOld || end != endOld;
1749
1750 if ( changeSel )
1751 {
1752 DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1753 }
1754
1755 // initialize CHARFORMAT struct
1756 #if wxUSE_RICHEDIT2
1757 CHARFORMAT2 cf;
1758 #else
1759 CHARFORMAT cf;
1760 #endif
1761
1762 wxZeroMemory(cf);
1763
1764 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1765 // CHARFORMAT in that case
1766 #if wxUSE_RICHEDIT2
1767 if ( m_verRichEdit == 1 )
1768 {
1769 // this is the only thing the control is going to grok
1770 cf.cbSize = sizeof(CHARFORMAT);
1771 }
1772 else
1773 #endif
1774 {
1775 // CHARFORMAT or CHARFORMAT2
1776 cf.cbSize = sizeof(cf);
1777 }
1778
1779 if ( style.HasFont() )
1780 {
1781 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1782 // but using it doesn't seem to hurt neither so leaving it for now
1783
1784 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1785 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1786
1787 // fill in data from LOGFONT but recalculate lfHeight because we need
1788 // the real height in twips and not the negative number which
1789 // wxFillLogFont() returns (this is correct in general and works with
1790 // the Windows font mapper, but not here)
1791 LOGFONT lf;
1792 wxFillLogFont(&lf, &style.GetFont());
1793 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1794 cf.bCharSet = lf.lfCharSet;
1795 cf.bPitchAndFamily = lf.lfPitchAndFamily;
1796 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1797
1798 // also deal with underline/italic/bold attributes: note that we must
1799 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1800 // style to allow clearing it
1801 if ( lf.lfItalic )
1802 {
1803 cf.dwEffects |= CFE_ITALIC;
1804 }
1805
1806 if ( lf.lfWeight == FW_BOLD )
1807 {
1808 cf.dwEffects |= CFE_BOLD;
1809 }
1810
1811 if ( lf.lfUnderline )
1812 {
1813 cf.dwEffects |= CFE_UNDERLINE;
1814 }
1815
1816 // strikeout fonts are not supported by wxWindows
1817 }
1818
1819 if ( style.HasTextColour() )
1820 {
1821 cf.dwMask |= CFM_COLOR;
1822 cf.crTextColor = wxColourToRGB(style.GetTextColour());
1823 }
1824
1825 #if wxUSE_RICHEDIT2
1826 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
1827 {
1828 cf.dwMask |= CFM_BACKCOLOR;
1829 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
1830 }
1831 #endif // wxUSE_RICHEDIT2
1832
1833 // do format the selection
1834 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
1835 SCF_SELECTION, (LPARAM)&cf) != 0;
1836 if ( !ok )
1837 {
1838 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
1839 }
1840
1841 if ( changeSel )
1842 {
1843 // restore the original selection
1844 DoSetSelection(startOld, endOld, FALSE);
1845 }
1846
1847 return ok;
1848 #endif
1849 }
1850
1851 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
1852 {
1853 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
1854 return FALSE;
1855
1856 // we have to do this or the style wouldn't apply for the text typed by the
1857 // user
1858 long posLast = GetLastPosition();
1859 SetStyle(posLast, posLast, m_defaultStyle);
1860
1861 return TRUE;
1862 }
1863
1864 #endif
1865
1866 // ----------------------------------------------------------------------------
1867 // wxRichEditModule
1868 // ----------------------------------------------------------------------------
1869
1870 bool wxRichEditModule::OnInit()
1871 {
1872 // don't do anything - we will load it when needed
1873 return TRUE;
1874 }
1875
1876 void wxRichEditModule::OnExit()
1877 {
1878 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
1879 {
1880 if ( ms_hRichEdit[i] )
1881 {
1882 ::FreeLibrary(ms_hRichEdit[i]);
1883 }
1884 }
1885 }
1886
1887 /* static */
1888 bool wxRichEditModule::Load(int version)
1889 {
1890 // we don't support loading richedit 3.0 as I don't know how to distinguish
1891 // it from 2.0 anyhow
1892 wxCHECK_MSG( version == 1 || version == 2, FALSE,
1893 _T("incorrect richedit control version requested") );
1894
1895 // make it the index in the array
1896 version--;
1897
1898 if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
1899 {
1900 // we had already tried to load it and failed
1901 return FALSE;
1902 }
1903
1904 if ( ms_hRichEdit[version] )
1905 {
1906 // we've already got this one
1907 return TRUE;
1908 }
1909
1910 wxString dllname = version ? _T("riched20") : _T("riched32");
1911 dllname += _T(".dll");
1912
1913 ms_hRichEdit[version] = ::LoadLibrary(dllname);
1914
1915 if ( !ms_hRichEdit[version] )
1916 {
1917 wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1918
1919 ms_hRichEdit[version] = (HINSTANCE)-1;
1920
1921 return FALSE;
1922 }
1923
1924 return TRUE;
1925 }
1926
1927 #endif // wxUSE_RICHEDIT
1928
1929 #endif // wxUSE_TEXTCTRL
wxWidgets (Impactor)