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explanation of getdefaultattributes
[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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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 && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
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 classes
78 // ----------------------------------------------------------------------------
79
80 #if wxUSE_RICHEDIT
81
82 // this module initializes RichEdit DLL(s) if needed
83 class wxRichEditModule : public wxModule
84 {
85 public:
86 virtual bool OnInit();
87 virtual void OnExit();
88
89 // load the richedit DLL of at least of required version
90 static bool Load(int version = 1);
91
92 private:
93 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
94 static HINSTANCE ms_hRichEdit[2];
95
96 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
97 };
98
99 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
100
101 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
102
103 #endif // wxUSE_RICHEDIT
104
105 // ----------------------------------------------------------------------------
106 // event tables and other macros
107 // ----------------------------------------------------------------------------
108
109 #if wxUSE_EXTENDED_RTTI
110 WX_DEFINE_FLAGS( wxTextCtrlStyle )
111
112 wxBEGIN_FLAGS( wxTextCtrlStyle )
113 // new style border flags, we put them first to
114 // use them for streaming out
115 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
116 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
117 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
118 wxFLAGS_MEMBER(wxBORDER_RAISED)
119 wxFLAGS_MEMBER(wxBORDER_STATIC)
120 wxFLAGS_MEMBER(wxBORDER_NONE)
121
122 // old style border flags
123 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
124 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
125 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
126 wxFLAGS_MEMBER(wxRAISED_BORDER)
127 wxFLAGS_MEMBER(wxSTATIC_BORDER)
128 wxFLAGS_MEMBER(wxBORDER)
129
130 // standard window styles
131 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
132 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
133 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
134 wxFLAGS_MEMBER(wxWANTS_CHARS)
135 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
136 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
137 wxFLAGS_MEMBER(wxVSCROLL)
138 wxFLAGS_MEMBER(wxHSCROLL)
139
140 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
141 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
142 wxFLAGS_MEMBER(wxTE_MULTILINE)
143 wxFLAGS_MEMBER(wxTE_PASSWORD)
144 wxFLAGS_MEMBER(wxTE_READONLY)
145 wxFLAGS_MEMBER(wxHSCROLL)
146 wxFLAGS_MEMBER(wxTE_RICH)
147 wxFLAGS_MEMBER(wxTE_RICH2)
148 wxFLAGS_MEMBER(wxTE_AUTO_URL)
149 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
150 wxFLAGS_MEMBER(wxTE_LEFT)
151 wxFLAGS_MEMBER(wxTE_CENTRE)
152 wxFLAGS_MEMBER(wxTE_RIGHT)
153 wxFLAGS_MEMBER(wxTE_DONTWRAP)
154 wxFLAGS_MEMBER(wxTE_LINEWRAP)
155 wxFLAGS_MEMBER(wxTE_WORDWRAP)
156
157 wxEND_FLAGS( wxTextCtrlStyle )
158
159 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
160
161 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
162 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
163 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
164
165 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
166 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
167 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
168 wxEND_PROPERTIES_TABLE()
169
170 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
171 wxEND_HANDLERS_TABLE()
172
173 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
174 #else
175 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
176 #endif
177
178
179 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
180 EVT_CHAR(wxTextCtrl::OnChar)
181 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
182
183 #if wxUSE_RICHEDIT
184 EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
185 #endif
186
187 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
188 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
189 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
190 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
191 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
192 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
193 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
194
195 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
196 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
197 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
198 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
199 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
200 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
201 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
202
203 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
204 END_EVENT_TABLE()
205
206 // ============================================================================
207 // implementation
208 // ============================================================================
209
210 // ----------------------------------------------------------------------------
211 // creation
212 // ----------------------------------------------------------------------------
213
214 void wxTextCtrl::Init()
215 {
216 #if wxUSE_RICHEDIT
217 m_verRichEdit = 0;
218 #endif // wxUSE_RICHEDIT
219
220 m_privateContextMenu = NULL;
221 m_suppressNextUpdate = false;
222 m_isNativeCaretShown = true;
223 }
224
225 wxTextCtrl::~wxTextCtrl()
226 {
227 if (m_privateContextMenu)
228 {
229 delete m_privateContextMenu;
230 m_privateContextMenu = NULL;
231 }
232 }
233
234 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
235 const wxString& value,
236 const wxPoint& pos,
237 const wxSize& size,
238 long style,
239 const wxValidator& validator,
240 const wxString& name)
241 {
242 #ifdef __WXWINCE__
243 if ((style & wxBORDER_MASK) == 0)
244 style |= wxBORDER_SIMPLE;
245 #endif
246
247 // base initialization
248 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
249 return false;
250
251 // translate wxWin style flags to MSW ones
252 WXDWORD msStyle = MSWGetCreateWindowFlags();
253
254 // do create the control - either an EDIT or RICHEDIT
255 wxString windowClass = wxT("EDIT");
256
257 #if wxUSE_RICHEDIT
258 if ( m_windowStyle & wxTE_AUTO_URL )
259 {
260 // automatic URL detection only works in RichEdit 2.0+
261 m_windowStyle |= wxTE_RICH2;
262 }
263
264 if ( m_windowStyle & wxTE_RICH2 )
265 {
266 // using richedit 2.0 implies using wxTE_RICH
267 m_windowStyle |= wxTE_RICH;
268 }
269
270 // we need to load the richedit DLL before creating the rich edit control
271 if ( m_windowStyle & wxTE_RICH )
272 {
273 static bool s_errorGiven = false;// MT-FIXME
274
275 // Which version do we need? Use 1.0 by default because it is much more
276 // like the the standard EDIT or 2.0 if explicitly requested, but use
277 // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
278 //
279 // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
280 // (and thus EDIT) much better than RichEdit 2.0 so we probably
281 // should use 3.0 if available as it is the best of both worlds -
282 // but as I can't test it right now I don't do it (VZ)
283 #if wxUSE_UNICODE
284 const int verRichEdit = 2;
285 #else // !wxUSE_UNICODE
286 int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
287 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
288
289 // only give the error msg once if the DLL can't be loaded
290 if ( !s_errorGiven )
291 {
292 // try to load the RichEdit DLL (will do nothing if already done)
293 if ( !wxRichEditModule::Load(verRichEdit) )
294 {
295 #if !wxUSE_UNICODE
296 // try another version?
297 verRichEdit = 3 - verRichEdit; // 1 <-> 2
298
299 if ( !wxRichEditModule::Load(verRichEdit) )
300 #endif // wxUSE_UNICODE
301 {
302 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
303
304 s_errorGiven = true;
305 }
306 }
307 }
308
309 // have we managed to load any richedit version?
310 if ( !s_errorGiven )
311 {
312 m_verRichEdit = verRichEdit;
313 if ( m_verRichEdit == 1 )
314 {
315 windowClass = wxT("RICHEDIT");
316 }
317 else
318 {
319 #ifndef RICHEDIT_CLASS
320 wxString RICHEDIT_CLASS;
321 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
322 #if wxUSE_UNICODE
323 RICHEDIT_CLASS += _T('W');
324 #else // ANSI
325 RICHEDIT_CLASS += _T('A');
326 #endif // Unicode/ANSI
327 #endif // !RICHEDIT_CLASS
328
329 windowClass = RICHEDIT_CLASS;
330 }
331 }
332 }
333 #endif // wxUSE_RICHEDIT
334
335 // we need to turn '\n's into "\r\n"s for the multiline controls
336 wxString valueWin;
337 if ( m_windowStyle & wxTE_MULTILINE )
338 {
339 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
340 }
341 else // single line
342 {
343 valueWin = value;
344 }
345
346 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
347 return false;
348
349 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
350
351 #if wxUSE_RICHEDIT
352 if ( IsRich() )
353 {
354 // enable the events we're interested in: we want to get EN_CHANGE as
355 // for the normal controls
356 LPARAM mask = ENM_CHANGE;
357
358 if ( GetRichVersion() == 1 )
359 {
360 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
361 // explained in its handler
362 mask |= ENM_MOUSEEVENTS;
363 }
364 else if ( m_windowStyle & wxTE_AUTO_URL )
365 {
366 mask |= ENM_LINK;
367
368 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
369 }
370
371 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
372 }
373 #endif // wxUSE_RICHEDIT
374
375 return true;
376 }
377
378 // Make sure the window style (etc.) reflects the HWND style (roughly)
379 void wxTextCtrl::AdoptAttributesFromHWND()
380 {
381 wxWindow::AdoptAttributesFromHWND();
382
383 HWND hWnd = GetHwnd();
384 long style = ::GetWindowLong(hWnd, GWL_STYLE);
385
386 // retrieve the style to see whether this is an edit or richedit ctrl
387 #if wxUSE_RICHEDIT
388 wxString classname = wxGetWindowClass(GetHWND());
389
390 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
391 {
392 m_verRichEdit = 0;
393 }
394 else // rich edit?
395 {
396 wxChar c;
397 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
398 {
399 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
400
401 m_verRichEdit = 0;
402 }
403 }
404 #endif // wxUSE_RICHEDIT
405
406 if (style & ES_MULTILINE)
407 m_windowStyle |= wxTE_MULTILINE;
408 if (style & ES_PASSWORD)
409 m_windowStyle |= wxTE_PASSWORD;
410 if (style & ES_READONLY)
411 m_windowStyle |= wxTE_READONLY;
412 if (style & ES_WANTRETURN)
413 m_windowStyle |= wxTE_PROCESS_ENTER;
414 if (style & ES_CENTER)
415 m_windowStyle |= wxTE_CENTRE;
416 if (style & ES_RIGHT)
417 m_windowStyle |= wxTE_RIGHT;
418 }
419
420 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
421 {
422 long msStyle = wxControl::MSWGetStyle(style, exstyle);
423
424 // styles which we alaways add by default
425 if ( style & wxTE_MULTILINE )
426 {
427 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
428 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
429
430 msStyle |= ES_MULTILINE | ES_WANTRETURN;
431 if ( !(style & wxTE_NO_VSCROLL) )
432 {
433 // always adjust the vertical scrollbar automatically if we have it
434 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
435
436 #if wxUSE_RICHEDIT
437 // we have to use this style for the rich edit controls because
438 // without it the vertical scrollbar never appears at all in
439 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
440 if ( style & wxTE_RICH2 )
441 {
442 msStyle |= ES_DISABLENOSCROLL;
443 }
444 #endif // wxUSE_RICHEDIT
445 }
446
447 style |= wxTE_PROCESS_ENTER;
448 }
449 else // !multiline
450 {
451 // there is really no reason to not have this style for single line
452 // text controls
453 msStyle |= ES_AUTOHSCROLL;
454 }
455
456 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
457 // scrollbar, there is no wrapping -- which makes sense
458 if ( style & wxTE_DONTWRAP )
459 {
460 // automatically scroll the control horizontally as necessary
461 //
462 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
463 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
464 // it doesn't seem to do any harm for plain edit controls, add it
465 // always
466 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
467 }
468
469 if ( style & wxTE_READONLY )
470 msStyle |= ES_READONLY;
471
472 if ( style & wxTE_PASSWORD )
473 msStyle |= ES_PASSWORD;
474
475 if ( style & wxTE_NOHIDESEL )
476 msStyle |= ES_NOHIDESEL;
477
478 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
479 if ( style & wxTE_CENTRE )
480 msStyle |= ES_CENTER;
481 else if ( style & wxTE_RIGHT )
482 msStyle |= ES_RIGHT;
483 else
484 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
485
486 return msStyle;
487 }
488
489 void wxTextCtrl::SetWindowStyleFlag(long style)
490 {
491 #if wxUSE_RICHEDIT
492 // we have to deal with some styles separately because they can't be
493 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
494 // using richedit-specific EM_SETOPTIONS
495 if ( IsRich() &&
496 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
497 {
498 bool set = (style & wxTE_NOHIDESEL) != 0;
499
500 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
501 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
502 }
503 #endif // wxUSE_RICHEDIT
504
505 wxControl::SetWindowStyleFlag(style);
506 }
507
508 // ----------------------------------------------------------------------------
509 // set/get the controls text
510 // ----------------------------------------------------------------------------
511
512 wxString wxTextCtrl::GetValue() const
513 {
514 // range 0..-1 is special for GetRange() and means to retrieve all text
515 return GetRange(0, -1);
516 }
517
518 wxString wxTextCtrl::GetRange(long from, long to) const
519 {
520 wxString str;
521
522 if ( from >= to && to != -1 )
523 {
524 // nothing to retrieve
525 return str;
526 }
527
528 #if wxUSE_RICHEDIT
529 if ( IsRich() )
530 {
531 int len = GetWindowTextLength(GetHwnd());
532 if ( len > from )
533 {
534 if ( to == -1 )
535 to = len;
536
537 #if !wxUSE_UNICODE
538 // we must use EM_STREAMOUT if we don't want to lose all characters
539 // not representable in the current character set (EM_GETTEXTRANGE
540 // simply replaces them with question marks...)
541 if ( GetRichVersion() > 1 )
542 {
543 // we must have some encoding, otherwise any 8bit chars in the
544 // control are simply *lost* (replaced by '?')
545 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
546
547 wxFont font = m_defaultStyle.GetFont();
548 if ( !font.Ok() )
549 font = GetFont();
550
551 if ( font.Ok() )
552 {
553 encoding = font.GetEncoding();
554 }
555
556 if ( encoding == wxFONTENCODING_SYSTEM )
557 {
558 encoding = wxLocale::GetSystemEncoding();
559 }
560
561 if ( encoding == wxFONTENCODING_SYSTEM )
562 {
563 encoding = wxFONTENCODING_ISO8859_1;
564 }
565
566 str = StreamOut(encoding);
567
568 if ( !str.empty() )
569 {
570 // we have to manually extract the required part, luckily
571 // this is easy in this case as EOL characters in str are
572 // just LFs because we remove CRs in wxRichEditStreamOut
573 str = str.Mid(from, to - from);
574 }
575 }
576
577 // StreamOut() wasn't used or failed, try to do it in normal way
578 if ( str.empty() )
579 #endif // !wxUSE_UNICODE
580 {
581 // alloc one extra WORD as needed by the control
582 wxStringBuffer tmp(str, ++len);
583 wxChar *p = tmp;
584
585 TEXTRANGE textRange;
586 textRange.chrg.cpMin = from;
587 textRange.chrg.cpMax = to;
588 textRange.lpstrText = p;
589
590 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
591 0, (LPARAM)&textRange);
592
593 if ( m_verRichEdit > 1 )
594 {
595 // RichEdit 2.0 uses just CR ('\r') for the
596 // newlines which is neither Unix nor Windows
597 // style - convert it to something reasonable
598 for ( ; *p; p++ )
599 {
600 if ( *p == _T('\r') )
601 *p = _T('\n');
602 }
603 }
604 }
605
606 if ( m_verRichEdit == 1 )
607 {
608 // convert to the canonical form - see comment below
609 str = wxTextFile::Translate(str, wxTextFileType_Unix);
610 }
611 }
612 //else: no text at all, leave the string empty
613 }
614 else
615 #endif // wxUSE_RICHEDIT
616 {
617 // retrieve all text
618 str = wxGetWindowText(GetHWND());
619
620 // need only a range?
621 if ( from < to )
622 {
623 str = str.Mid(from, to - from);
624 }
625
626 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
627 // canonical one (same one as above) for consistency with the other kinds
628 // of controls and, more importantly, with the other ports
629 str = wxTextFile::Translate(str, wxTextFileType_Unix);
630 }
631
632 return str;
633 }
634
635 void wxTextCtrl::SetValue(const wxString& value)
636 {
637 // if the text is long enough, it's faster to just set it instead of first
638 // comparing it with the old one (chances are that it will be different
639 // anyhow, this comparison is there to avoid flicker for small single-line
640 // edit controls mostly)
641 if ( (value.length() > 0x400) || (value != GetValue()) )
642 {
643 DoWriteText(value, false /* not selection only */);
644
645 // for compatibility, don't move the cursor when doing SetValue()
646 SetInsertionPoint(0);
647 }
648 else // same text
649 {
650 // still send an event for consistency
651 SendUpdateEvent();
652 }
653
654 // we should reset the modified flag even if the value didn't really change
655
656 // mark the control as being not dirty - we changed its text, not the
657 // user
658 DiscardEdits();
659 }
660
661 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
662
663 // TODO: using memcpy() would improve performance a lot for big amounts of text
664
665 DWORD CALLBACK
666 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
667 {
668 *pcb = 0;
669
670 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
671
672 wchar_t *wbuf = (wchar_t *)buf;
673 const wchar_t *wpc = *ppws;
674 while ( cb && *wpc )
675 {
676 *wbuf++ = *wpc++;
677
678 cb -= sizeof(wchar_t);
679 (*pcb) += sizeof(wchar_t);
680 }
681
682 *ppws = wpc;
683
684 return 0;
685 }
686
687 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
688 struct wxStreamOutData
689 {
690 wchar_t *wpc;
691 size_t len;
692 };
693
694 DWORD CALLBACK
695 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
696 {
697 *pcb = 0;
698
699 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
700
701 const wchar_t *wbuf = (const wchar_t *)buf;
702 wchar_t *wpc = data->wpc;
703 while ( cb )
704 {
705 wchar_t wch = *wbuf++;
706
707 // turn "\r\n" into "\n" on the fly
708 if ( wch != L'\r' )
709 *wpc++ = wch;
710 else
711 data->len--;
712
713 cb -= sizeof(wchar_t);
714 (*pcb) += sizeof(wchar_t);
715 }
716
717 data->wpc = wpc;
718
719 return 0;
720 }
721
722
723 #if wxUSE_UNICODE_MSLU
724 #define UNUSED_IF_MSLU(param)
725 #else
726 #define UNUSED_IF_MSLU(param) param
727 #endif
728
729 bool
730 wxTextCtrl::StreamIn(const wxString& value,
731 wxFontEncoding UNUSED_IF_MSLU(encoding),
732 bool selectionOnly)
733 {
734 #if wxUSE_UNICODE_MSLU
735 const wchar_t *wpc = value.c_str();
736 #else // !wxUSE_UNICODE_MSLU
737 wxCSConv conv(encoding);
738
739 const size_t len = conv.MB2WC(NULL, value, value.length());
740
741 #if wxUSE_WCHAR_T
742 wxWCharBuffer wchBuf(len);
743 wchar_t *wpc = wchBuf.data();
744 #else
745 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
746 wchar_t *wpc = wchBuf;
747 #endif
748
749 conv.MB2WC(wpc, value, value.length());
750 #endif // wxUSE_UNICODE_MSLU
751
752 // finally, stream it in the control
753 EDITSTREAM eds;
754 wxZeroMemory(eds);
755 eds.dwCookie = (DWORD)&wpc;
756 // the cast below is needed for broken (very) old mingw32 headers
757 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
758
759 // we're going to receive 2 EN_CHANGE notifications if we got any selection
760 // (same problem as in DoWriteText())
761 if ( selectionOnly && HasSelection() )
762 {
763 // so suppress one of them
764 m_suppressNextUpdate = true;
765 }
766
767 ::SendMessage(GetHwnd(), EM_STREAMIN,
768 SF_TEXT |
769 SF_UNICODE |
770 (selectionOnly ? SFF_SELECTION : 0),
771 (LPARAM)&eds);
772
773 if ( eds.dwError )
774 {
775 wxLogLastError(_T("EM_STREAMIN"));
776 }
777
778 #if !wxUSE_WCHAR_T
779 free(wchBuf);
780 #endif // !wxUSE_WCHAR_T
781
782 return true;
783 }
784
785 #if !wxUSE_UNICODE_MSLU
786
787 wxString
788 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
789 {
790 wxString out;
791
792 const int len = GetWindowTextLength(GetHwnd());
793
794 #if wxUSE_WCHAR_T
795 wxWCharBuffer wchBuf(len);
796 wchar_t *wpc = wchBuf.data();
797 #else
798 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
799 wchar_t *wpc = wchBuf;
800 #endif
801
802 wxStreamOutData data;
803 data.wpc = wpc;
804 data.len = len;
805
806 EDITSTREAM eds;
807 wxZeroMemory(eds);
808 eds.dwCookie = (DWORD)&data;
809 eds.pfnCallback = wxRichEditStreamOut;
810
811 ::SendMessage
812 (
813 GetHwnd(),
814 EM_STREAMOUT,
815 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
816 (LPARAM)&eds
817 );
818
819 if ( eds.dwError )
820 {
821 wxLogLastError(_T("EM_STREAMOUT"));
822 }
823 else // streamed out ok
824 {
825 // NUL-terminate the string because its length could have been
826 // decreased by wxRichEditStreamOut
827 *(wchBuf.data() + data.len) = L'\0';
828
829 // now convert to the given encoding (this is a possibly lossful
830 // conversion but what else can we do)
831 wxCSConv conv(encoding);
832 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
833 if ( lenNeeded++ )
834 {
835 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
836 }
837 }
838
839 #if !wxUSE_WCHAR_T
840 free(wchBuf);
841 #endif // !wxUSE_WCHAR_T
842
843 return out;
844 }
845
846 #endif // !wxUSE_UNICODE_MSLU
847
848 #endif // wxUSE_RICHEDIT
849
850 void wxTextCtrl::WriteText(const wxString& value)
851 {
852 DoWriteText(value);
853 }
854
855 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
856 {
857 wxString valueDos;
858 if ( m_windowStyle & wxTE_MULTILINE )
859 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
860 else
861 valueDos = value;
862
863 #if wxUSE_RICHEDIT
864 // there are several complications with the rich edit controls here
865 bool done = false;
866 if ( IsRich() )
867 {
868 // first, ensure that the new text will be in the default style
869 if ( !m_defaultStyle.IsDefault() )
870 {
871 long start, end;
872 GetSelection(&start, &end);
873 SetStyle(start, end, m_defaultStyle);
874 }
875
876 #if wxUSE_UNICODE_MSLU
877 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
878 // but EM_STREAMIN works
879 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
880 {
881 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
882 }
883 #endif // wxUSE_UNICODE_MSLU
884
885 #if !wxUSE_UNICODE
886 // next check if the text we're inserting must be shown in a non
887 // default charset -- this only works for RichEdit > 1.0
888 if ( GetRichVersion() > 1 )
889 {
890 wxFont font = m_defaultStyle.GetFont();
891 if ( !font.Ok() )
892 font = GetFont();
893
894 if ( font.Ok() )
895 {
896 wxFontEncoding encoding = font.GetEncoding();
897 if ( encoding != wxFONTENCODING_SYSTEM )
898 {
899 // we have to use EM_STREAMIN to force richedit control 2.0+
900 // to show any text in the non default charset -- otherwise
901 // it thinks it knows better than we do and always shows it
902 // in the default one
903 done = StreamIn(valueDos, encoding, selectionOnly);
904 }
905 }
906 }
907 #endif // !wxUSE_UNICODE
908 }
909
910 if ( !done )
911 #endif // wxUSE_RICHEDIT
912 {
913 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
914 // call below which is confusing for the client code and so should be
915 // avoided
916 //
917 // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
918 // and there is a non empty selection currently and (b) rich text
919 // controls in any case
920 if (
921 #if wxUSE_RICHEDIT
922 IsRich() ||
923 #endif // wxUSE_RICHEDIT
924 (selectionOnly && HasSelection()) )
925 {
926 m_suppressNextUpdate = true;
927 }
928
929 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
930 0, (LPARAM)valueDos.c_str());
931
932 // OTOH, non rich text controls don't generate any events at all when
933 // we use WM_SETTEXT -- have to emulate them here
934 if ( !selectionOnly
935 #if wxUSE_RICHEDIT
936 && !IsRich()
937 #endif // wxUSE_RICHEDIT
938 )
939 {
940 // Windows already sends an update event for single-line
941 // controls.
942 if ( m_windowStyle & wxTE_MULTILINE )
943 SendUpdateEvent();
944 }
945 }
946
947 AdjustSpaceLimit();
948 }
949
950 void wxTextCtrl::AppendText(const wxString& text)
951 {
952 SetInsertionPointEnd();
953
954 WriteText(text);
955
956 #if wxUSE_RICHEDIT
957 if ( IsMultiLine() && GetRichVersion() > 1 )
958 {
959 // setting the caret to the end and showing it simply doesn't work for
960 // RichEdit 2.0 -- force it to still do what we want
961 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
962 }
963 #endif // wxUSE_RICHEDIT
964 }
965
966 void wxTextCtrl::Clear()
967 {
968 ::SetWindowText(GetHwnd(), wxEmptyString);
969
970 #if wxUSE_RICHEDIT
971 if ( !IsRich() )
972 #endif // wxUSE_RICHEDIT
973 {
974 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
975 // but the normal ones don't -- make Clear() behaviour consistent by
976 // always sending this event
977
978 // Windows already sends an update event for single-line
979 // controls.
980 if ( m_windowStyle & wxTE_MULTILINE )
981 SendUpdateEvent();
982 }
983 }
984
985 #ifdef __WIN32__
986
987 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
988 {
989 SetFocus();
990
991 size_t lenOld = GetValue().length();
992
993 wxUint32 code = event.GetRawKeyCode();
994 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
995 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
996
997 // assume that any alphanumeric key changes the total number of characters
998 // in the control - this should work in 99% of cases
999 return GetValue().length() != lenOld;
1000 }
1001
1002 #endif // __WIN32__
1003
1004 // ----------------------------------------------------------------------------
1005 // Clipboard operations
1006 // ----------------------------------------------------------------------------
1007
1008 void wxTextCtrl::Copy()
1009 {
1010 if (CanCopy())
1011 {
1012 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1013 }
1014 }
1015
1016 void wxTextCtrl::Cut()
1017 {
1018 if (CanCut())
1019 {
1020 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1021 }
1022 }
1023
1024 void wxTextCtrl::Paste()
1025 {
1026 if (CanPaste())
1027 {
1028 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1029 }
1030 }
1031
1032 bool wxTextCtrl::HasSelection() const
1033 {
1034 long from, to;
1035 GetSelection(&from, &to);
1036 return from != to;
1037 }
1038
1039 bool wxTextCtrl::CanCopy() const
1040 {
1041 // Can copy if there's a selection
1042 return HasSelection();
1043 }
1044
1045 bool wxTextCtrl::CanCut() const
1046 {
1047 return CanCopy() && IsEditable();
1048 }
1049
1050 bool wxTextCtrl::CanPaste() const
1051 {
1052 if ( !IsEditable() )
1053 return false;
1054
1055 #if wxUSE_RICHEDIT
1056 if ( IsRich() )
1057 {
1058 UINT cf = 0; // 0 == any format
1059
1060 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1061 }
1062 #endif // wxUSE_RICHEDIT
1063
1064 // Standard edit control: check for straight text on clipboard
1065 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1066 return false;
1067
1068 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1069 ::CloseClipboard();
1070
1071 return isTextAvailable;
1072 }
1073
1074 // ----------------------------------------------------------------------------
1075 // Accessors
1076 // ----------------------------------------------------------------------------
1077
1078 void wxTextCtrl::SetEditable(bool editable)
1079 {
1080 HWND hWnd = GetHwnd();
1081 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1082 }
1083
1084 void wxTextCtrl::SetInsertionPoint(long pos)
1085 {
1086 DoSetSelection(pos, pos);
1087 }
1088
1089 void wxTextCtrl::SetInsertionPointEnd()
1090 {
1091 // we must not do anything if the caret is already there because calling
1092 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1093 // if it doesn't actually move the caret anywhere and so the simple fact of
1094 // doing it results in horrible flicker when appending big amounts of text
1095 // to the control in a few chunks (see DoAddText() test in the text sample)
1096 if ( GetInsertionPoint() == GetLastPosition() )
1097 return;
1098
1099 long pos;
1100
1101 #if wxUSE_RICHEDIT
1102 if ( m_verRichEdit == 1 )
1103 {
1104 // we don't have to waste time calling GetLastPosition() in this case
1105 pos = -1;
1106 }
1107 else // !RichEdit 1.0
1108 #endif // wxUSE_RICHEDIT
1109 {
1110 pos = GetLastPosition();
1111 }
1112
1113 SetInsertionPoint(pos);
1114 }
1115
1116 long wxTextCtrl::GetInsertionPoint() const
1117 {
1118 #if wxUSE_RICHEDIT
1119 if ( IsRich() )
1120 {
1121 CHARRANGE range;
1122 range.cpMin = 0;
1123 range.cpMax = 0;
1124 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1125 return range.cpMin;
1126 }
1127 #endif // wxUSE_RICHEDIT
1128
1129 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1130 return Pos & 0xFFFF;
1131 }
1132
1133 long wxTextCtrl::GetLastPosition() const
1134 {
1135 int numLines = GetNumberOfLines();
1136 long posStartLastLine = XYToPosition(0, numLines - 1);
1137
1138 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1139
1140 return posStartLastLine + lenLastLine;
1141 }
1142
1143 // If the return values from and to are the same, there is no
1144 // selection.
1145 void wxTextCtrl::GetSelection(long* from, long* to) const
1146 {
1147 #if wxUSE_RICHEDIT
1148 if ( IsRich() )
1149 {
1150 CHARRANGE charRange;
1151 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1152
1153 *from = charRange.cpMin;
1154 *to = charRange.cpMax;
1155 }
1156 else
1157 #endif // !wxUSE_RICHEDIT
1158 {
1159 DWORD dwStart, dwEnd;
1160 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1161
1162 *from = dwStart;
1163 *to = dwEnd;
1164 }
1165 }
1166
1167 bool wxTextCtrl::IsEditable() const
1168 {
1169 // strangely enough, we may be called before the control is created: our
1170 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1171 // us
1172 if ( !m_hWnd )
1173 return true;
1174
1175 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1176
1177 return (style & ES_READONLY) == 0;
1178 }
1179
1180 // ----------------------------------------------------------------------------
1181 // selection
1182 // ----------------------------------------------------------------------------
1183
1184 void wxTextCtrl::SetSelection(long from, long to)
1185 {
1186 // if from and to are both -1, it means (in wxWidgets) that all text should
1187 // be selected - translate into Windows convention
1188 if ( (from == -1) && (to == -1) )
1189 {
1190 from = 0;
1191 to = -1;
1192 }
1193
1194 DoSetSelection(from, to);
1195 }
1196
1197 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1198 {
1199 HWND hWnd = GetHwnd();
1200
1201 #if wxUSE_RICHEDIT
1202 if ( IsRich() )
1203 {
1204 CHARRANGE range;
1205 range.cpMin = from;
1206 range.cpMax = to;
1207 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1208 }
1209 else
1210 #endif // wxUSE_RICHEDIT
1211 {
1212 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1213 }
1214
1215 if ( scrollCaret )
1216 {
1217 #if wxUSE_RICHEDIT
1218 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1219 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1220 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1221 // option is set (but it does work ok in richedit 1.0 mode...)
1222 //
1223 // so to make it work we either need to give focus to it here which
1224 // will probably create many problems (dummy focus events; window
1225 // containing the text control being brought to foreground
1226 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1227 // create other problems too -- and in fact it does because if we turn
1228 // on/off this style while appending the text to the control, the
1229 // vertical scrollbar never appears in it even if we append tons of
1230 // text and to work around this the only solution I found was to use
1231 // ES_DISABLENOSCROLL
1232 //
1233 // this is very ugly but I don't see any other way to make this work
1234 if ( GetRichVersion() > 1 )
1235 {
1236 if ( !HasFlag(wxTE_NOHIDESEL) )
1237 {
1238 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1239 ECOOP_OR, ECO_NOHIDESEL);
1240 }
1241 //else: everything is already ok
1242 }
1243 #endif // wxUSE_RICHEDIT
1244
1245 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1246
1247 #if wxUSE_RICHEDIT
1248 // restore ECO_NOHIDESEL if we changed it
1249 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1250 {
1251 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1252 ECOOP_AND, ~ECO_NOHIDESEL);
1253 }
1254 #endif // wxUSE_RICHEDIT
1255 }
1256 }
1257
1258 // ----------------------------------------------------------------------------
1259 // Working with files
1260 // ----------------------------------------------------------------------------
1261
1262 bool wxTextCtrl::LoadFile(const wxString& file)
1263 {
1264 if ( wxTextCtrlBase::LoadFile(file) )
1265 {
1266 // update the size limit if needed
1267 AdjustSpaceLimit();
1268
1269 return true;
1270 }
1271
1272 return false;
1273 }
1274
1275 // ----------------------------------------------------------------------------
1276 // Editing
1277 // ----------------------------------------------------------------------------
1278
1279 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1280 {
1281 // Set selection and remove it
1282 DoSetSelection(from, to, false /* don't scroll caret into view */);
1283
1284 DoWriteText(value, true /* selection only */);
1285 }
1286
1287 void wxTextCtrl::Remove(long from, long to)
1288 {
1289 Replace(from, to, wxEmptyString);
1290 }
1291
1292 bool wxTextCtrl::IsModified() const
1293 {
1294 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1295 }
1296
1297 void wxTextCtrl::MarkDirty()
1298 {
1299 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1300 }
1301
1302 void wxTextCtrl::DiscardEdits()
1303 {
1304 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1305 }
1306
1307 int wxTextCtrl::GetNumberOfLines() const
1308 {
1309 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1310 }
1311
1312 // ----------------------------------------------------------------------------
1313 // Positions <-> coords
1314 // ----------------------------------------------------------------------------
1315
1316 long wxTextCtrl::XYToPosition(long x, long y) const
1317 {
1318 // This gets the char index for the _beginning_ of this line
1319 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1320
1321 return charIndex + x;
1322 }
1323
1324 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1325 {
1326 HWND hWnd = GetHwnd();
1327
1328 // This gets the line number containing the character
1329 long lineNo;
1330 #if wxUSE_RICHEDIT
1331 if ( IsRich() )
1332 {
1333 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1334 }
1335 else
1336 #endif // wxUSE_RICHEDIT
1337 {
1338 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1339 }
1340
1341 if ( lineNo == -1 )
1342 {
1343 // no such line
1344 return false;
1345 }
1346
1347 // This gets the char index for the _beginning_ of this line
1348 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1349 if ( charIndex == -1 )
1350 {
1351 return false;
1352 }
1353
1354 // The X position must therefore be the different between pos and charIndex
1355 if ( x )
1356 *x = pos - charIndex;
1357 if ( y )
1358 *y = lineNo;
1359
1360 return true;
1361 }
1362
1363 wxTextCtrlHitTestResult
1364 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1365 {
1366 // first get the position from Windows
1367 LPARAM lParam;
1368
1369 #if wxUSE_RICHEDIT
1370 POINTL ptl;
1371 if ( IsRich() )
1372 {
1373 // for rich edit controls the position is passed iva the struct fields
1374 ptl.x = pt.x;
1375 ptl.y = pt.y;
1376 lParam = (LPARAM)&ptl;
1377 }
1378 else
1379 #endif // wxUSE_RICHEDIT
1380 {
1381 // for the plain ones, we are limited to 16 bit positions which are
1382 // combined in a single 32 bit value
1383 lParam = MAKELPARAM(pt.x, pt.y);
1384 }
1385
1386 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1387
1388 if ( pos == -1 )
1389 {
1390 // this seems to indicate an error...
1391 return wxTE_HT_UNKNOWN;
1392 }
1393
1394 #if wxUSE_RICHEDIT
1395 if ( !IsRich() )
1396 #endif // wxUSE_RICHEDIT
1397 {
1398 // for plain EDIT controls the higher word contains something else
1399 pos = LOWORD(pos);
1400 }
1401
1402
1403 // next determine where it is relatively to our point: EM_CHARFROMPOS
1404 // always returns the closest character but we need to be more precise, so
1405 // double check that we really are where it pretends
1406 POINTL ptReal;
1407
1408 #if wxUSE_RICHEDIT
1409 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1410 // we don't know how to do it
1411 if ( IsRich() )
1412 {
1413 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1414 }
1415 else
1416 #endif // wxUSE_RICHEDIT
1417 {
1418 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1419
1420 if ( lRc == -1 )
1421 {
1422 // this is apparently returned when pos corresponds to the last
1423 // position
1424 ptReal.x =
1425 ptReal.y = 0;
1426 }
1427 else
1428 {
1429 ptReal.x = LOWORD(lRc);
1430 ptReal.y = HIWORD(lRc);
1431 }
1432 }
1433
1434 wxTextCtrlHitTestResult rc;
1435
1436 if ( pt.y > ptReal.y + GetCharHeight() )
1437 rc = wxTE_HT_BELOW;
1438 else if ( pt.x > ptReal.x + GetCharWidth() )
1439 rc = wxTE_HT_BEYOND;
1440 else
1441 rc = wxTE_HT_ON_TEXT;
1442
1443 if ( posOut )
1444 *posOut = pos;
1445
1446 return rc;
1447 }
1448
1449 // ----------------------------------------------------------------------------
1450 //
1451 // ----------------------------------------------------------------------------
1452
1453 void wxTextCtrl::ShowPosition(long pos)
1454 {
1455 HWND hWnd = GetHwnd();
1456
1457 // To scroll to a position, we pass the number of lines and characters
1458 // to scroll *by*. This means that we need to:
1459 // (1) Find the line position of the current line.
1460 // (2) Find the line position of pos.
1461 // (3) Scroll by (pos - current).
1462 // For now, ignore the horizontal scrolling.
1463
1464 // Is this where scrolling is relative to - the line containing the caret?
1465 // Or is the first visible line??? Try first visible line.
1466 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1467
1468 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1469
1470 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1471
1472 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1473
1474 if (linesToScroll != 0)
1475 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1476 }
1477
1478 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1479 {
1480 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1481 }
1482
1483 int wxTextCtrl::GetLineLength(long lineNo) const
1484 {
1485 long pos = XYToPosition(0, lineNo);
1486
1487 return GetLengthOfLineContainingPos(pos);
1488 }
1489
1490 wxString wxTextCtrl::GetLineText(long lineNo) const
1491 {
1492 size_t len = (size_t)GetLineLength(lineNo) + 1;
1493
1494 // there must be at least enough place for the length WORD in the
1495 // buffer
1496 len += sizeof(WORD);
1497
1498 wxString str;
1499 {
1500 wxStringBufferLength tmp(str, len);
1501 wxChar *buf = tmp;
1502
1503 *(WORD *)buf = (WORD)len;
1504 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1505
1506 #if wxUSE_RICHEDIT
1507 if ( IsRich() )
1508 {
1509 // remove the '\r' returned by the rich edit control, the user code
1510 // should never see it
1511 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1512 {
1513 buf[len - 2] = _T('\n');
1514 len--;
1515 }
1516 }
1517 #endif // wxUSE_RICHEDIT
1518
1519 // remove the '\n' at the end, if any (this is how this function is
1520 // supposed to work according to the docs)
1521 if ( buf[len - 1] == _T('\n') )
1522 {
1523 len--;
1524 }
1525
1526 buf[len] = 0;
1527 tmp.SetLength(len);
1528 }
1529
1530 return str;
1531 }
1532
1533 void wxTextCtrl::SetMaxLength(unsigned long len)
1534 {
1535 #if wxUSE_RICHEDIT
1536 if (IsRich())
1537 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, (LPARAM) (DWORD) len);
1538 else
1539 #endif
1540 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1541 }
1542
1543 // ----------------------------------------------------------------------------
1544 // Undo/redo
1545 // ----------------------------------------------------------------------------
1546
1547 void wxTextCtrl::Undo()
1548 {
1549 if (CanUndo())
1550 {
1551 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1552 }
1553 }
1554
1555 void wxTextCtrl::Redo()
1556 {
1557 if (CanRedo())
1558 {
1559 #if wxUSE_RICHEDIT
1560 if (GetRichVersion() > 1)
1561 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1562 else
1563 #endif
1564 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1565 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1566 }
1567 }
1568
1569 bool wxTextCtrl::CanUndo() const
1570 {
1571 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1572 }
1573
1574 bool wxTextCtrl::CanRedo() const
1575 {
1576 #if wxUSE_RICHEDIT
1577 if (GetRichVersion() > 1)
1578 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1579 else
1580 #endif
1581 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1582 }
1583
1584 // ----------------------------------------------------------------------------
1585 // caret handling (Windows only)
1586 // ----------------------------------------------------------------------------
1587
1588 bool wxTextCtrl::ShowNativeCaret(bool show)
1589 {
1590 if ( show != m_isNativeCaretShown )
1591 {
1592 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1593 {
1594 // not an error, may simply indicate that it's not shown/hidden
1595 // yet (i.e. it had been hidden/showh 2 times before)
1596 return false;
1597 }
1598
1599 m_isNativeCaretShown = show;
1600 }
1601
1602 return true;
1603 }
1604
1605 // ----------------------------------------------------------------------------
1606 // implemenation details
1607 // ----------------------------------------------------------------------------
1608
1609 void wxTextCtrl::Command(wxCommandEvent & event)
1610 {
1611 SetValue(event.GetString());
1612 ProcessCommand (event);
1613 }
1614
1615 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1616 {
1617 // By default, load the first file into the text window.
1618 if (event.GetNumberOfFiles() > 0)
1619 {
1620 LoadFile(event.GetFiles()[0]);
1621 }
1622 }
1623
1624 // ----------------------------------------------------------------------------
1625 // kbd input processing
1626 // ----------------------------------------------------------------------------
1627
1628 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1629 {
1630 MSG *msg = (MSG *)pMsg;
1631
1632 // check for our special keys here: if we don't do it and the parent frame
1633 // uses them as accelerators, they wouldn't work at all, so we disable
1634 // usual preprocessing for them
1635 if ( msg->message == WM_KEYDOWN )
1636 {
1637 WORD vkey = (WORD) msg->wParam;
1638 if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1639 {
1640 if ( vkey == VK_BACK )
1641 return false;
1642 }
1643 else // no Alt
1644 {
1645 // we want to process some Ctrl-foo and Shift-bar but no key
1646 // combinations without either Ctrl or Shift nor with both of them
1647 // pressed
1648 const int ctrl = wxIsCtrlDown(),
1649 shift = wxIsShiftDown();
1650 switch ( ctrl + shift )
1651 {
1652 default:
1653 wxFAIL_MSG( _T("how many modifiers have we got?") );
1654 // fall through
1655
1656 case 0:
1657 case 2:
1658 break;
1659
1660 case 1:
1661 // either Ctrl or Shift pressed
1662 if ( ctrl )
1663 {
1664 switch ( vkey )
1665 {
1666 case 'C':
1667 case 'V':
1668 case 'X':
1669 case VK_INSERT:
1670 case VK_DELETE:
1671 case VK_HOME:
1672 case VK_END:
1673 return false;
1674 }
1675 }
1676 else // Shift is pressed
1677 {
1678 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1679 return false;
1680 }
1681 }
1682 }
1683 }
1684
1685 return wxControl::MSWShouldPreProcessMessage(pMsg);
1686 }
1687
1688 void wxTextCtrl::OnChar(wxKeyEvent& event)
1689 {
1690 switch ( event.GetKeyCode() )
1691 {
1692 case WXK_RETURN:
1693 if ( !HasFlag(wxTE_MULTILINE) )
1694 {
1695 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1696 InitCommandEvent(event);
1697 event.SetString(GetValue());
1698 if ( GetEventHandler()->ProcessEvent(event) )
1699 return;
1700 }
1701 //else: multiline controls need Enter for themselves
1702
1703 break;
1704
1705 case WXK_TAB:
1706 // ok, so this is getting absolutely ridiculous but I don't see
1707 // any other way to fix this bug: when a multiline text control is
1708 // inside a wxFrame, we need to generate the navigation event as
1709 // otherwise nothing happens at all, but when the same control is
1710 // created inside a dialog, IsDialogMessage() *does* switch focus
1711 // all by itself and so if we do it here as well, it is advanced
1712 // twice and goes to the next control... to prevent this from
1713 // happening we're doing this ugly check, the logic being that if
1714 // we don't have focus then it had been already changed to the next
1715 // control
1716 //
1717 // the right thing to do would, of course, be to understand what
1718 // the hell is IsDialogMessage() doing but this is beyond my feeble
1719 // forces at the moment unfortunately
1720 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1721 {
1722 if ( FindFocus() == this )
1723 {
1724 int flags = 0;
1725 if (!event.ShiftDown())
1726 flags |= wxNavigationKeyEvent::IsForward ;
1727 if (event.ControlDown())
1728 flags |= wxNavigationKeyEvent::WinChange ;
1729 if (Navigate(flags))
1730 return;
1731 }
1732 }
1733 else
1734 {
1735 // Insert tab since calling the default Windows handler
1736 // doesn't seem to do it
1737 WriteText(wxT("\t"));
1738 }
1739 break;
1740 }
1741
1742 // no, we didn't process it
1743 event.Skip();
1744 }
1745
1746 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1747 {
1748 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1749
1750 if ( nMsg == WM_GETDLGCODE )
1751 {
1752 // we always want the chars and the arrows: the arrows for navigation
1753 // and the chars because we want Ctrl-C to work even in a read only
1754 // control
1755 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1756
1757 if ( IsEditable() )
1758 {
1759 // we may have several different cases:
1760 // 1. normal case: both TAB and ENTER are used for dlg navigation
1761 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1762 // next control in the dialog
1763 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1764 // navigation
1765 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1766 // to the next control
1767
1768 // the multiline edit control should always get <Return> for itself
1769 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1770 lDlgCode |= DLGC_WANTMESSAGE;
1771
1772 if ( HasFlag(wxTE_PROCESS_TAB) )
1773 lDlgCode |= DLGC_WANTTAB;
1774
1775 lRc |= lDlgCode;
1776 }
1777 else // !editable
1778 {
1779 // NB: use "=", not "|=" as the base class version returns the
1780 // same flags is this state as usual (i.e. including
1781 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1782 // native Win32 apps?) but for now live with it.
1783 lRc = lDlgCode;
1784 }
1785 }
1786
1787 return lRc;
1788 }
1789
1790 // ----------------------------------------------------------------------------
1791 // text control event processing
1792 // ----------------------------------------------------------------------------
1793
1794 bool wxTextCtrl::SendUpdateEvent()
1795 {
1796 // is event reporting suspended?
1797 if ( m_suppressNextUpdate )
1798 {
1799 // do process the next one
1800 m_suppressNextUpdate = false;
1801
1802 return false;
1803 }
1804
1805 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1806 InitCommandEvent(event);
1807 event.SetString(GetValue());
1808
1809 return ProcessCommand(event);
1810 }
1811
1812 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1813 {
1814 switch ( param )
1815 {
1816 case EN_SETFOCUS:
1817 case EN_KILLFOCUS:
1818 {
1819 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1820 : wxEVT_SET_FOCUS,
1821 m_windowId);
1822 event.SetEventObject(this);
1823 GetEventHandler()->ProcessEvent(event);
1824 }
1825 break;
1826
1827 case EN_CHANGE:
1828 SendUpdateEvent();
1829 break;
1830
1831 case EN_MAXTEXT:
1832 // the text size limit has been hit -- try to increase it
1833 if ( !AdjustSpaceLimit() )
1834 {
1835 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1836 InitCommandEvent(event);
1837 event.SetString(GetValue());
1838 ProcessCommand(event);
1839 }
1840 break;
1841
1842 // the other edit notification messages are not processed
1843 default:
1844 return false;
1845 }
1846
1847 // processed
1848 return true;
1849 }
1850
1851 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1852 #if wxUSE_CTL3D
1853 WXUINT message,
1854 WXWPARAM wParam,
1855 WXLPARAM lParam
1856 #else
1857 WXUINT WXUNUSED(message),
1858 WXWPARAM WXUNUSED(wParam),
1859 WXLPARAM WXUNUSED(lParam)
1860 #endif
1861 )
1862 {
1863 #if wxUSE_CTL3D
1864 if ( m_useCtl3D )
1865 {
1866 HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1867 return (WXHBRUSH) hbrush;
1868 }
1869 #endif // wxUSE_CTL3D
1870
1871 HDC hdc = (HDC)pDC;
1872 wxColour colBack = GetBackgroundColour();
1873
1874 if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1875 colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1876
1877 ::SetBkColor(hdc, wxColourToRGB(colBack));
1878 ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1879
1880 wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1881
1882 return (WXHBRUSH)brush->GetResourceHandle();
1883 }
1884
1885 bool wxTextCtrl::AdjustSpaceLimit()
1886 {
1887 unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1888
1889 // HACK: we try to automatically extend the limit for the amount of text
1890 // to allow (interactively) entering more than 64Kb of text under
1891 // Win9x but we shouldn't reset the text limit which was previously
1892 // set explicitly with SetMaxLength()
1893 //
1894 // we could solve this by storing the limit we set in wxTextCtrl but
1895 // to save space we prefer to simply test here the actual limit
1896 // value: we consider that SetMaxLength() can only be called for
1897 // values < 32Kb
1898 if ( limit < 0x8000 )
1899 {
1900 // we've got more text than limit set by SetMaxLength()
1901 return false;
1902 }
1903
1904 unsigned int len = ::GetWindowTextLength(GetHwnd());
1905 if ( len >= limit )
1906 {
1907 limit = len + 0x8000; // 32Kb
1908
1909 #if wxUSE_RICHEDIT
1910 if ( IsRich() )
1911 {
1912 // as a nice side effect, this also allows passing limit > 64Kb
1913 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1914 }
1915 else
1916 #endif // wxUSE_RICHEDIT
1917 {
1918 if ( limit > 0xffff )
1919 {
1920 // this will set it to a platform-dependent maximum (much more
1921 // than 64Kb under NT)
1922 limit = 0;
1923 }
1924
1925 ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1926 }
1927 }
1928
1929 // we changed the limit
1930 return true;
1931 }
1932
1933 bool wxTextCtrl::AcceptsFocus() const
1934 {
1935 // we don't want focus if we can't be edited unless we're a multiline
1936 // control because then it might be still nice to get focus from keyboard
1937 // to be able to scroll it without mouse
1938 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1939 }
1940
1941 wxSize wxTextCtrl::DoGetBestSize() const
1942 {
1943 int cx, cy;
1944 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
1945
1946 int wText = DEFAULT_ITEM_WIDTH;
1947
1948 int hText = cy;
1949 if ( m_windowStyle & wxTE_MULTILINE )
1950 {
1951 hText *= wxMax(GetNumberOfLines(), 5);
1952 }
1953 //else: for single line control everything is ok
1954
1955 // we have to add the adjustments for the control height only once, not
1956 // once per line, so do it after multiplication above
1957 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
1958
1959 return wxSize(wText, hText);
1960 }
1961
1962 // ----------------------------------------------------------------------------
1963 // standard handlers for standard edit menu events
1964 // ----------------------------------------------------------------------------
1965
1966 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1967 {
1968 Cut();
1969 }
1970
1971 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1972 {
1973 Copy();
1974 }
1975
1976 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1977 {
1978 Paste();
1979 }
1980
1981 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1982 {
1983 Undo();
1984 }
1985
1986 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1987 {
1988 Redo();
1989 }
1990
1991 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
1992 {
1993 long from, to;
1994 GetSelection(& from, & to);
1995 if (from != -1 && to != -1)
1996 Remove(from, to);
1997 }
1998
1999 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2000 {
2001 SetSelection(-1, -1);
2002 }
2003
2004 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2005 {
2006 event.Enable( CanCut() );
2007 }
2008
2009 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2010 {
2011 event.Enable( CanCopy() );
2012 }
2013
2014 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2015 {
2016 event.Enable( CanPaste() );
2017 }
2018
2019 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2020 {
2021 event.Enable( CanUndo() );
2022 }
2023
2024 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2025 {
2026 event.Enable( CanRedo() );
2027 }
2028
2029 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2030 {
2031 long from, to;
2032 GetSelection(& from, & to);
2033 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2034 }
2035
2036 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2037 {
2038 event.Enable(GetLastPosition() > 0);
2039 }
2040
2041 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
2042 {
2043 #if wxUSE_RICHEDIT
2044 if (IsRich())
2045 {
2046 if (!m_privateContextMenu)
2047 {
2048 m_privateContextMenu = new wxMenu;
2049 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2050 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2051 m_privateContextMenu->AppendSeparator();
2052 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2053 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2054 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2055 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2056 m_privateContextMenu->AppendSeparator();
2057 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2058 }
2059 PopupMenu(m_privateContextMenu, event.GetPosition());
2060 return;
2061 }
2062 else
2063 #endif
2064 event.Skip();
2065 }
2066
2067 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2068 {
2069 // be sure the caret remains invisible if the user had hidden it
2070 if ( !m_isNativeCaretShown )
2071 {
2072 ::HideCaret(GetHwnd());
2073 }
2074 }
2075
2076 // the rest of the file only deals with the rich edit controls
2077 #if wxUSE_RICHEDIT
2078
2079 // ----------------------------------------------------------------------------
2080 // EN_LINK processing
2081 // ----------------------------------------------------------------------------
2082
2083 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2084 {
2085 NMHDR *hdr = (NMHDR* )lParam;
2086 switch ( hdr->code )
2087 {
2088 case EN_MSGFILTER:
2089 {
2090 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2091 UINT msg = msgf->msg;
2092
2093 // this is a bit crazy but richedit 1.0 sends us all mouse
2094 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2095 // generate the wxWin events for this message manually
2096 //
2097 // NB: in fact, this is still not totally correct as it does
2098 // send us WM_LBUTTONUP if the selection was cleared by the
2099 // last click -- so currently we get 2 events in this case,
2100 // but as I don't see any obvious way to check for this I
2101 // leave this code in place because it's still better than
2102 // not getting left up events at all
2103 if ( msg == WM_LBUTTONUP )
2104 {
2105 WXUINT flags = msgf->wParam;
2106 int x = GET_X_LPARAM(msgf->lParam),
2107 y = GET_Y_LPARAM(msgf->lParam);
2108
2109 HandleMouseEvent(msg, x, y, flags);
2110 }
2111 }
2112
2113 // return true to process the event (and false to ignore it)
2114 return true;
2115
2116 case EN_LINK:
2117 {
2118 const ENLINK *enlink = (ENLINK *)hdr;
2119
2120 switch ( enlink->msg )
2121 {
2122 case WM_SETCURSOR:
2123 // ok, so it is hardcoded - do we really nee to
2124 // customize it?
2125 {
2126 wxCursor cur(wxCURSOR_HAND);
2127 ::SetCursor(GetHcursorOf(cur));
2128 *result = TRUE;
2129 break;
2130 }
2131
2132 case WM_MOUSEMOVE:
2133 case WM_LBUTTONDOWN:
2134 case WM_LBUTTONUP:
2135 case WM_LBUTTONDBLCLK:
2136 case WM_RBUTTONDOWN:
2137 case WM_RBUTTONUP:
2138 case WM_RBUTTONDBLCLK:
2139 // send a mouse event
2140 {
2141 static const wxEventType eventsMouse[] =
2142 {
2143 wxEVT_MOTION,
2144 wxEVT_LEFT_DOWN,
2145 wxEVT_LEFT_UP,
2146 wxEVT_LEFT_DCLICK,
2147 wxEVT_RIGHT_DOWN,
2148 wxEVT_RIGHT_UP,
2149 wxEVT_RIGHT_DCLICK,
2150 };
2151
2152 // the event ids are consecutive
2153 wxMouseEvent
2154 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2155
2156 InitMouseEvent(evtMouse,
2157 GET_X_LPARAM(enlink->lParam),
2158 GET_Y_LPARAM(enlink->lParam),
2159 enlink->wParam);
2160
2161 wxTextUrlEvent event(m_windowId, evtMouse,
2162 enlink->chrg.cpMin,
2163 enlink->chrg.cpMax);
2164
2165 InitCommandEvent(event);
2166
2167 *result = ProcessCommand(event);
2168 }
2169 break;
2170 }
2171 }
2172 return true;
2173 }
2174
2175 // not processed, leave it to the base class
2176 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2177 }
2178
2179 // ----------------------------------------------------------------------------
2180 // Default colors for MSW text control
2181 //
2182 // Set default background color to the native white instead of
2183 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2184 // ----------------------------------------------------------------------------
2185
2186 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2187 {
2188 wxVisualAttributes attrs;
2189 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2190 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2191 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2192
2193 return attrs;
2194 }
2195
2196 // ----------------------------------------------------------------------------
2197 // colour setting for the rich edit controls
2198 // ----------------------------------------------------------------------------
2199
2200 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2201 {
2202 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2203 {
2204 // colour didn't really change
2205 return false;
2206 }
2207
2208 if ( IsRich() )
2209 {
2210 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2211 // EM_SETBKGNDCOLOR additionally
2212 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2213 }
2214
2215 return true;
2216 }
2217
2218 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2219 {
2220 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2221 {
2222 // colour didn't really change
2223 return false;
2224 }
2225
2226 if ( IsRich() )
2227 {
2228 // change the colour of everything
2229 CHARFORMAT cf;
2230 wxZeroMemory(cf);
2231 cf.cbSize = sizeof(cf);
2232 cf.dwMask = CFM_COLOR;
2233 cf.crTextColor = wxColourToRGB(colour);
2234 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2235 }
2236
2237 return true;
2238 }
2239
2240 // ----------------------------------------------------------------------------
2241 // styling support for rich edit controls
2242 // ----------------------------------------------------------------------------
2243
2244 #if wxUSE_RICHEDIT
2245
2246 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2247 {
2248 if ( !IsRich() )
2249 {
2250 // can't do it with normal text control
2251 return false;
2252 }
2253
2254 // the richedit 1.0 doesn't handle setting background colour, so don't
2255 // even try to do anything if it's the only thing we want to change
2256 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2257 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2258 !style.HasTabs() )
2259 {
2260 // nothing to do: return true if there was really nothing to do and
2261 // false if we failed to set bg colour
2262 return !style.HasBackgroundColour();
2263 }
2264
2265 // order the range if needed
2266 if ( start > end )
2267 {
2268 long tmp = start;
2269 start = end;
2270 end = tmp;
2271 }
2272
2273 // we can only change the format of the selection, so select the range we
2274 // want and restore the old selection later
2275 long startOld, endOld;
2276 GetSelection(&startOld, &endOld);
2277
2278 // but do we really have to change the selection?
2279 bool changeSel = start != startOld || end != endOld;
2280
2281 if ( changeSel )
2282 {
2283 DoSetSelection(start, end, false /* don't scroll caret into view */);
2284 }
2285
2286 // initialize CHARFORMAT struct
2287 #if wxUSE_RICHEDIT2
2288 CHARFORMAT2 cf;
2289 #else
2290 CHARFORMAT cf;
2291 #endif
2292
2293 wxZeroMemory(cf);
2294
2295 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2296 // CHARFORMAT in that case
2297 #if wxUSE_RICHEDIT2
2298 if ( m_verRichEdit == 1 )
2299 {
2300 // this is the only thing the control is going to grok
2301 cf.cbSize = sizeof(CHARFORMAT);
2302 }
2303 else
2304 #endif
2305 {
2306 // CHARFORMAT or CHARFORMAT2
2307 cf.cbSize = sizeof(cf);
2308 }
2309
2310 if ( style.HasFont() )
2311 {
2312 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2313 // but using it doesn't seem to hurt neither so leaving it for now
2314
2315 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2316 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2317
2318 // fill in data from LOGFONT but recalculate lfHeight because we need
2319 // the real height in twips and not the negative number which
2320 // wxFillLogFont() returns (this is correct in general and works with
2321 // the Windows font mapper, but not here)
2322 LOGFONT lf;
2323 wxFillLogFont(&lf, &style.GetFont());
2324 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2325 cf.bCharSet = lf.lfCharSet;
2326 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2327 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2328
2329 // also deal with underline/italic/bold attributes: note that we must
2330 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2331 // style to allow clearing it
2332 if ( lf.lfItalic )
2333 {
2334 cf.dwEffects |= CFE_ITALIC;
2335 }
2336
2337 if ( lf.lfWeight == FW_BOLD )
2338 {
2339 cf.dwEffects |= CFE_BOLD;
2340 }
2341
2342 if ( lf.lfUnderline )
2343 {
2344 cf.dwEffects |= CFE_UNDERLINE;
2345 }
2346
2347 // strikeout fonts are not supported by wxWidgets
2348 }
2349
2350 if ( style.HasTextColour() )
2351 {
2352 cf.dwMask |= CFM_COLOR;
2353 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2354 }
2355
2356 #if wxUSE_RICHEDIT2
2357 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2358 {
2359 cf.dwMask |= CFM_BACKCOLOR;
2360 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2361 }
2362 #endif // wxUSE_RICHEDIT2
2363
2364 // do format the selection
2365 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2366 SCF_SELECTION, (LPARAM)&cf) != 0;
2367 if ( !ok )
2368 {
2369 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2370 }
2371
2372 // now do the paragraph formatting
2373 PARAFORMAT2 pf;
2374 wxZeroMemory(pf);
2375 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2376 // PARAFORMAT in that case
2377 #if wxUSE_RICHEDIT2
2378 if ( m_verRichEdit == 1 )
2379 {
2380 // this is the only thing the control is going to grok
2381 pf.cbSize = sizeof(PARAFORMAT);
2382 }
2383 else
2384 #endif
2385 {
2386 // PARAFORMAT or PARAFORMAT2
2387 pf.cbSize = sizeof(pf);
2388 }
2389
2390 if (style.HasAlignment())
2391 {
2392 pf.dwMask |= PFM_ALIGNMENT;
2393 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2394 pf.wAlignment = PFA_RIGHT;
2395 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2396 pf.wAlignment = PFA_CENTER;
2397 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2398 pf.wAlignment = PFA_JUSTIFY;
2399 else
2400 pf.wAlignment = PFA_LEFT;
2401 }
2402
2403 if (style.HasLeftIndent())
2404 {
2405 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2406
2407 // Convert from 1/10 mm to TWIPS
2408 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2409 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2410 }
2411
2412 if (style.HasRightIndent())
2413 {
2414 pf.dwMask |= PFM_RIGHTINDENT;
2415
2416 // Convert from 1/10 mm to TWIPS
2417 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2418 }
2419
2420 if (style.HasTabs())
2421 {
2422 pf.dwMask |= PFM_TABSTOPS;
2423
2424 const wxArrayInt& tabs = style.GetTabs();
2425
2426 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2427 size_t i;
2428 for (i = 0; i < (size_t) pf.cTabCount; i++)
2429 {
2430 // Convert from 1/10 mm to TWIPS
2431 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2432 }
2433 }
2434
2435 if (pf.dwMask != 0)
2436 {
2437 // do format the selection
2438 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2439 0, (LPARAM) &pf) != 0;
2440 if ( !ok )
2441 {
2442 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2443 }
2444 }
2445
2446 if ( changeSel )
2447 {
2448 // restore the original selection
2449 DoSetSelection(startOld, endOld, false);
2450 }
2451
2452 return ok;
2453 }
2454
2455 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2456 {
2457 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2458 return false;
2459
2460 // we have to do this or the style wouldn't apply for the text typed by the
2461 // user
2462 long posLast = GetLastPosition();
2463 SetStyle(posLast, posLast, m_defaultStyle);
2464
2465 return true;
2466 }
2467
2468 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2469 {
2470 if ( !IsRich() )
2471 {
2472 // can't do it with normal text control
2473 return false;
2474 }
2475
2476 // initialize CHARFORMAT struct
2477 #if wxUSE_RICHEDIT2
2478 CHARFORMAT2 cf;
2479 #else
2480 CHARFORMAT cf;
2481 #endif
2482
2483 wxZeroMemory(cf);
2484
2485 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2486 // CHARFORMAT in that case
2487 #if wxUSE_RICHEDIT2
2488 if ( m_verRichEdit == 1 )
2489 {
2490 // this is the only thing the control is going to grok
2491 cf.cbSize = sizeof(CHARFORMAT);
2492 }
2493 else
2494 #endif
2495 {
2496 // CHARFORMAT or CHARFORMAT2
2497 cf.cbSize = sizeof(cf);
2498 }
2499 // we can only change the format of the selection, so select the range we
2500 // want and restore the old selection later
2501 long startOld, endOld;
2502 GetSelection(&startOld, &endOld);
2503
2504 // but do we really have to change the selection?
2505 bool changeSel = position != startOld || position != endOld;
2506
2507 if ( changeSel )
2508 {
2509 DoSetSelection(position, position, false /* don't scroll caret into view */);
2510 }
2511
2512 // get the selection formatting
2513 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2514 SCF_SELECTION, (LPARAM)&cf) ;
2515
2516
2517 LOGFONT lf;
2518 lf.lfHeight = cf.yHeight;
2519 lf.lfWidth = 0;
2520 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2521 lf.lfClipPrecision = 0;
2522 lf.lfEscapement = 0;
2523 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2524
2525 //NOTE: we _MUST_ set each of these values to _something_ since we
2526 //do not call wxZeroMemory on the LOGFONT lf
2527 if (cf.dwEffects & CFE_ITALIC)
2528 lf.lfItalic = TRUE;
2529 else
2530 lf.lfItalic = FALSE;
2531
2532 lf.lfOrientation = 0;
2533 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2534 lf.lfQuality = 0;
2535
2536 if (cf.dwEffects & CFE_STRIKEOUT)
2537 lf.lfStrikeOut = TRUE;
2538 else
2539 lf.lfStrikeOut = FALSE;
2540
2541 if (cf.dwEffects & CFE_UNDERLINE)
2542 lf.lfUnderline = TRUE;
2543 else
2544 lf.lfUnderline = FALSE;
2545
2546 if (cf.dwEffects & CFE_BOLD)
2547 lf.lfWeight = FW_BOLD;
2548 else
2549 lf.lfWeight = FW_NORMAL;
2550
2551 wxFont font = wxCreateFontFromLogFont(& lf);
2552 if (font.Ok())
2553 {
2554 style.SetFont(font);
2555 }
2556 style.SetTextColour(wxColour(cf.crTextColor));
2557
2558 #if wxUSE_RICHEDIT2
2559 if ( m_verRichEdit != 1 )
2560 {
2561 // cf.dwMask |= CFM_BACKCOLOR;
2562 style.SetBackgroundColour(wxColour(cf.crBackColor));
2563 }
2564 #endif // wxUSE_RICHEDIT2
2565
2566 // now get the paragraph formatting
2567 PARAFORMAT2 pf;
2568 wxZeroMemory(pf);
2569 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2570 // PARAFORMAT in that case
2571 #if wxUSE_RICHEDIT2
2572 if ( m_verRichEdit == 1 )
2573 {
2574 // this is the only thing the control is going to grok
2575 pf.cbSize = sizeof(PARAFORMAT);
2576 }
2577 else
2578 #endif
2579 {
2580 // PARAFORMAT or PARAFORMAT2
2581 pf.cbSize = sizeof(pf);
2582 }
2583
2584 // do format the selection
2585 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2586
2587 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2588 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2589
2590 if (pf.wAlignment == PFA_CENTER)
2591 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2592 else if (pf.wAlignment == PFA_RIGHT)
2593 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2594 else if (pf.wAlignment == PFA_JUSTIFY)
2595 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2596 else
2597 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2598
2599 wxArrayInt tabStops;
2600 size_t i;
2601 for (i = 0; i < (size_t) pf.cTabCount; i++)
2602 {
2603 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2604 }
2605
2606 if ( changeSel )
2607 {
2608 // restore the original selection
2609 DoSetSelection(startOld, endOld, false);
2610 }
2611
2612 return true;
2613 }
2614
2615 #endif
2616
2617 // ----------------------------------------------------------------------------
2618 // wxRichEditModule
2619 // ----------------------------------------------------------------------------
2620
2621 bool wxRichEditModule::OnInit()
2622 {
2623 // don't do anything - we will load it when needed
2624 return true;
2625 }
2626
2627 void wxRichEditModule::OnExit()
2628 {
2629 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2630 {
2631 if ( ms_hRichEdit[i] )
2632 {
2633 ::FreeLibrary(ms_hRichEdit[i]);
2634 ms_hRichEdit[i] = NULL;
2635 }
2636 }
2637 }
2638
2639 /* static */
2640 bool wxRichEditModule::Load(int version)
2641 {
2642 // we don't support loading richedit 3.0 as I don't know how to distinguish
2643 // it from 2.0 anyhow
2644 wxCHECK_MSG( version == 1 || version == 2, false,
2645 _T("incorrect richedit control version requested") );
2646
2647 // make it the index in the array
2648 version--;
2649
2650 if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2651 {
2652 // we had already tried to load it and failed
2653 return false;
2654 }
2655
2656 if ( ms_hRichEdit[version] )
2657 {
2658 // we've already got this one
2659 return true;
2660 }
2661
2662 wxString dllname = version ? _T("riched20") : _T("riched32");
2663 dllname += _T(".dll");
2664
2665 ms_hRichEdit[version] = ::LoadLibrary(dllname);
2666
2667 if ( !ms_hRichEdit[version] )
2668 {
2669 wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2670
2671 ms_hRichEdit[version] = (HINSTANCE)-1;
2672
2673 return false;
2674 }
2675
2676 return true;
2677 }
2678
2679 #endif // wxUSE_RICHEDIT
2680
2681 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)