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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
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 ,, 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 , , 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 #ifdef __WIN16__
203 EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
204 #endif
205
206 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
207 END_EVENT_TABLE()
208
209 // ============================================================================
210 // implementation
211 // ============================================================================
212
213 // ----------------------------------------------------------------------------
214 // creation
215 // ----------------------------------------------------------------------------
216
217 void wxTextCtrl::Init()
218 {
219 #if wxUSE_RICHEDIT
220 m_verRichEdit = 0;
221 #endif // wxUSE_RICHEDIT
222
223 m_privateContextMenu = NULL;
224 m_suppressNextUpdate = FALSE;
225 m_isNativeCaretShown = true;
226 }
227
228 wxTextCtrl::~wxTextCtrl()
229 {
230 if (m_privateContextMenu)
231 {
232 delete m_privateContextMenu;
233 m_privateContextMenu = NULL;
234 }
235 }
236
237 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
238 const wxString& value,
239 const wxPoint& pos,
240 const wxSize& size,
241 long style,
242 const wxValidator& validator,
243 const wxString& name)
244 {
245 // base initialization
246 if ( !CreateBase(parent, id, pos, size, style, validator, name) )
247 return FALSE;
248
249 if ( parent )
250 parent->AddChild(this);
251
252 // translate wxWin style flags to MSW ones
253 WXDWORD msStyle = MSWGetCreateWindowFlags();
254
255 // do create the control - either an EDIT or RICHEDIT
256 wxString windowClass = wxT("EDIT");
257
258 #if wxUSE_RICHEDIT
259 if ( m_windowStyle & wxTE_AUTO_URL )
260 {
261 // automatic URL detection only works in RichEdit 2.0+
262 m_windowStyle |= wxTE_RICH2;
263 }
264
265 if ( m_windowStyle & wxTE_RICH2 )
266 {
267 // using richedit 2.0 implies using wxTE_RICH
268 m_windowStyle |= wxTE_RICH;
269 }
270
271 // we need to load the richedit DLL before creating the rich edit control
272 if ( m_windowStyle & wxTE_RICH )
273 {
274 static bool s_errorGiven = FALSE;// MT-FIXME
275
276 // Which version do we need? Use 1.0 by default because it is much more
277 // like the the standard EDIT or 2.0 if explicitly requested, but use
278 // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
279 //
280 // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
281 // (and thus EDIT) much better than RichEdit 2.0 so we probably
282 // should use 3.0 if available as it is the best of both worlds -
283 // but as I can't test it right now I don't do it (VZ)
284 #if wxUSE_UNICODE
285 const int verRichEdit = 2;
286 #else // !wxUSE_UNICODE
287 int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
288 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
289
290 // only give the error msg once if the DLL can't be loaded
291 if ( !s_errorGiven )
292 {
293 // try to load the RichEdit DLL (will do nothing if already done)
294 if ( !wxRichEditModule::Load(verRichEdit) )
295 {
296 #if !wxUSE_UNICODE
297 // try another version?
298 verRichEdit = 3 - verRichEdit; // 1 <-> 2
299
300 if ( !wxRichEditModule::Load(verRichEdit) )
301 #endif // wxUSE_UNICODE
302 {
303 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
304
305 s_errorGiven = TRUE;
306 }
307 }
308 }
309
310 // have we managed to load any richedit version?
311 if ( !s_errorGiven )
312 {
313 m_verRichEdit = verRichEdit;
314 if ( m_verRichEdit == 1 )
315 {
316 windowClass = wxT("RICHEDIT");
317 }
318 else
319 {
320 #ifndef RICHEDIT_CLASS
321 wxString RICHEDIT_CLASS;
322 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
323 #if wxUSE_UNICODE
324 RICHEDIT_CLASS += _T('W');
325 #else // ANSI
326 RICHEDIT_CLASS += _T('A');
327 #endif // Unicode/ANSI
328 #endif // !RICHEDIT_CLASS
329
330 windowClass = RICHEDIT_CLASS;
331 }
332 }
333 }
334 #endif // wxUSE_RICHEDIT
335
336 // we need to turn '\n's into "\r\n"s for the multiline controls
337 wxString valueWin;
338 if ( m_windowStyle & wxTE_MULTILINE )
339 {
340 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
341 }
342 else // single line
343 {
344 valueWin = value;
345 }
346
347 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
348 return FALSE;
349
350 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
351
352 #if wxUSE_RICHEDIT
353 if ( IsRich() )
354 {
355 // enable the events we're interested in: we want to get EN_CHANGE as
356 // for the normal controls
357 LPARAM mask = ENM_CHANGE;
358
359 if ( GetRichVersion() == 1 )
360 {
361 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
362 // explained in its handler
363 mask |= ENM_MOUSEEVENTS;
364 }
365 else if ( m_windowStyle & wxTE_AUTO_URL )
366 {
367 mask |= ENM_LINK;
368
369 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
370 }
371
372 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
373 }
374 #endif // wxUSE_RICHEDIT
375
376 return TRUE;
377 }
378
379 // Make sure the window style (etc.) reflects the HWND style (roughly)
380 void wxTextCtrl::AdoptAttributesFromHWND()
381 {
382 wxWindow::AdoptAttributesFromHWND();
383
384 HWND hWnd = GetHwnd();
385 long style = ::GetWindowLong(hWnd, GWL_STYLE);
386
387 // retrieve the style to see whether this is an edit or richedit ctrl
388 #if wxUSE_RICHEDIT
389 wxString classname = wxGetWindowClass(GetHWND());
390
391 if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
392 {
393 m_verRichEdit = 0;
394 }
395 else // rich edit?
396 {
397 wxChar c;
398 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
399 {
400 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
401
402 m_verRichEdit = 0;
403 }
404 }
405 #endif // wxUSE_RICHEDIT
406
407 if (style & ES_MULTILINE)
408 m_windowStyle |= wxTE_MULTILINE;
409 if (style & ES_PASSWORD)
410 m_windowStyle |= wxTE_PASSWORD;
411 if (style & ES_READONLY)
412 m_windowStyle |= wxTE_READONLY;
413 if (style & ES_WANTRETURN)
414 m_windowStyle |= wxTE_PROCESS_ENTER;
415 if (style & ES_CENTER)
416 m_windowStyle |= wxTE_CENTRE;
417 if (style & ES_RIGHT)
418 m_windowStyle |= wxTE_RIGHT;
419 }
420
421 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
422 {
423 long msStyle = wxControl::MSWGetStyle(style, exstyle);
424
425 // styles which we alaways add by default
426 if ( style & wxTE_MULTILINE )
427 {
428 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
429 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
430
431 msStyle |= ES_MULTILINE | ES_WANTRETURN;
432 if ( !(style & wxTE_NO_VSCROLL) )
433 {
434 // always adjust the vertical scrollbar automatically if we have it
435 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
436
437 #if wxUSE_RICHEDIT
438 // we have to use this style for the rich edit controls because
439 // without it the vertical scrollbar never appears at all in
440 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
441 if ( style & wxTE_RICH2 )
442 {
443 msStyle |= ES_DISABLENOSCROLL;
444 }
445 #endif // wxUSE_RICHEDIT
446 }
447
448 style |= wxTE_PROCESS_ENTER;
449 }
450 else // !multiline
451 {
452 // there is really no reason to not have this style for single line
453 // text controls
454 msStyle |= ES_AUTOHSCROLL;
455 }
456
457 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
458 // scrollbar, there is no wrapping -- which makes sense
459 if ( style & wxTE_DONTWRAP )
460 {
461 // automatically scroll the control horizontally as necessary
462 msStyle |= WS_HSCROLL;
463 }
464
465 if ( style & wxTE_READONLY )
466 msStyle |= ES_READONLY;
467
468 if ( style & wxTE_PASSWORD )
469 msStyle |= ES_PASSWORD;
470
471 if ( style & wxTE_NOHIDESEL )
472 msStyle |= ES_NOHIDESEL;
473
474 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
475 if ( style & wxTE_CENTRE )
476 msStyle |= ES_CENTER;
477 else if ( style & wxTE_RIGHT )
478 msStyle |= ES_RIGHT;
479 else
480 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
481
482 return msStyle;
483 }
484
485 void wxTextCtrl::SetWindowStyleFlag(long style)
486 {
487 #if wxUSE_RICHEDIT
488 // we have to deal with some styles separately because they can't be
489 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
490 // using richedit-specific EM_SETOPTIONS
491 if ( IsRich() &&
492 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
493 {
494 bool set = (style & wxTE_NOHIDESEL) != 0;
495
496 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
497 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
498 }
499 #endif // wxUSE_RICHEDIT
500
501 wxControl::SetWindowStyleFlag(style);
502 }
503
504 // ----------------------------------------------------------------------------
505 // set/get the controls text
506 // ----------------------------------------------------------------------------
507
508 wxString wxTextCtrl::GetValue() const
509 {
510 // range 0..-1 is special for GetRange() and means to retrieve all text
511 return GetRange(0, -1);
512 }
513
514 wxString wxTextCtrl::GetRange(long from, long to) const
515 {
516 wxString str;
517
518 if ( from >= to && to != -1 )
519 {
520 // nothing to retrieve
521 return str;
522 }
523
524 #if wxUSE_RICHEDIT
525 if ( IsRich() )
526 {
527 int len = GetWindowTextLength(GetHwnd());
528 if ( len > from )
529 {
530 if ( to == -1 )
531 to = len;
532
533 #if !wxUSE_UNICODE
534 // we must use EM_STREAMOUT if we don't want to lose all characters
535 // not representable in the current character set (EM_GETTEXTRANGE
536 // simply replaces them with question marks...)
537 if ( GetRichVersion() > 1 )
538 {
539 // we must have some encoding, otherwise any 8bit chars in the
540 // control are simply *lost* (replaced by '?')
541 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
542
543 wxFont font = m_defaultStyle.GetFont();
544 if ( !font.Ok() )
545 font = GetFont();
546
547 if ( font.Ok() )
548 {
549 encoding = font.GetEncoding();
550 }
551
552 if ( encoding == wxFONTENCODING_SYSTEM )
553 {
554 encoding = wxLocale::GetSystemEncoding();
555 }
556
557 if ( encoding == wxFONTENCODING_SYSTEM )
558 {
559 encoding = wxFONTENCODING_ISO8859_1;
560 }
561
562 str = StreamOut(encoding);
563
564 if ( !str.empty() )
565 {
566 // we have to manually extract the required part, luckily
567 // this is easy in this case as EOL characters in str are
568 // just LFs because we remove CRs in wxRichEditStreamOut
569 str = str.Mid(from, to - from);
570 }
571 }
572
573 // StreamOut() wasn't used or failed, try to do it in normal way
574 if ( str.empty() )
575 #endif // !wxUSE_UNICODE
576 {
577 // alloc one extra WORD as needed by the control
578 wxStringBuffer tmp(str, ++len);
579 wxChar *p = tmp;
580
581 TEXTRANGE textRange;
582 textRange.chrg.cpMin = from;
583 textRange.chrg.cpMax = to;
584 textRange.lpstrText = p;
585
586 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE,
587 0, (LPARAM)&textRange);
588
589 if ( m_verRichEdit > 1 )
590 {
591 // RichEdit 2.0 uses just CR ('\r') for the
592 // newlines which is neither Unix nor Windows
593 // style - convert it to something reasonable
594 for ( ; *p; p++ )
595 {
596 if ( *p == _T('\r') )
597 *p = _T('\n');
598 }
599 }
600 }
601
602 if ( m_verRichEdit == 1 )
603 {
604 // convert to the canonical form - see comment below
605 str = wxTextFile::Translate(str, wxTextFileType_Unix);
606 }
607 }
608 //else: no text at all, leave the string empty
609 }
610 else
611 #endif // wxUSE_RICHEDIT
612 {
613 // retrieve all text
614 str = wxGetWindowText(GetHWND());
615
616 // need only a range?
617 if ( from < to )
618 {
619 str = str.Mid(from, to - from);
620 }
621
622 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
623 // canonical one (same one as above) for consistency with the other kinds
624 // of controls and, more importantly, with the other ports
625 str = wxTextFile::Translate(str, wxTextFileType_Unix);
626 }
627
628 return str;
629 }
630
631 void wxTextCtrl::SetValue(const wxString& value)
632 {
633 // if the text is long enough, it's faster to just set it instead of first
634 // comparing it with the old one (chances are that it will be different
635 // anyhow, this comparison is there to avoid flicker for small single-line
636 // edit controls mostly)
637 if ( (value.length() > 0x400) || (value != GetValue()) )
638 {
639 DoWriteText(value, FALSE /* not selection only */);
640
641 // for compatibility, don't move the cursor when doing SetValue()
642 SetInsertionPoint(0);
643 }
644 else // same text
645 {
646 // still send an event for consistency
647 SendUpdateEvent();
648 }
649
650 // we should reset the modified flag even if the value didn't really change
651
652 // mark the control as being not dirty - we changed its text, not the
653 // user
654 DiscardEdits();
655 }
656
657 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
658
659 // TODO: using memcpy() would improve performance a lot for big amounts of text
660
661 DWORD CALLBACK
662 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
663 {
664 *pcb = 0;
665
666 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
667
668 wchar_t *wbuf = (wchar_t *)buf;
669 const wchar_t *wpc = *ppws;
670 while ( cb && *wpc )
671 {
672 *wbuf++ = *wpc++;
673
674 cb -= sizeof(wchar_t);
675 (*pcb) += sizeof(wchar_t);
676 }
677
678 *ppws = wpc;
679
680 return 0;
681 }
682
683 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
684 struct wxStreamOutData
685 {
686 wchar_t *wpc;
687 size_t len;
688 };
689
690 DWORD CALLBACK
691 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
692 {
693 *pcb = 0;
694
695 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
696
697 const wchar_t *wbuf = (const wchar_t *)buf;
698 wchar_t *wpc = data->wpc;
699 while ( cb )
700 {
701 wchar_t wch = *wbuf++;
702
703 // turn "\r\n" into "\n" on the fly
704 if ( wch != L'\r' )
705 *wpc++ = wch;
706 else
707 data->len--;
708
709 cb -= sizeof(wchar_t);
710 (*pcb) += sizeof(wchar_t);
711 }
712
713 data->wpc = wpc;
714
715 return 0;
716 }
717
718
719 #if wxUSE_UNICODE_MSLU
720 #define UNUSED_IF_MSLU(param)
721 #else
722 #define UNUSED_IF_MSLU(param) param
723 #endif
724
725 bool
726 wxTextCtrl::StreamIn(const wxString& value,
727 wxFontEncoding UNUSED_IF_MSLU(encoding),
728 bool selectionOnly)
729 {
730 #if wxUSE_UNICODE_MSLU
731 const wchar_t *wpc = value.c_str();
732 #else // !wxUSE_UNICODE_MSLU
733 wxCSConv conv(encoding);
734
735 const size_t len = conv.MB2WC(NULL, value, value.length());
736
737 #if wxUSE_WCHAR_T
738 wxWCharBuffer wchBuf(len);
739 wchar_t *wpc = wchBuf.data();
740 #else
741 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
742 wchar_t *wpc = wchBuf;
743 #endif
744
745 conv.MB2WC(wpc, value, value.length());
746 #endif // wxUSE_UNICODE_MSLU
747
748 // finally, stream it in the control
749 EDITSTREAM eds;
750 wxZeroMemory(eds);
751 eds.dwCookie = (DWORD)&wpc;
752 // the cast below is needed for broken (very) old mingw32 headers
753 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
754
755 // we're going to receive 2 EN_CHANGE notifications if we got any selection
756 // (same problem as in DoWriteText())
757 if ( selectionOnly && HasSelection() )
758 {
759 // so suppress one of them
760 m_suppressNextUpdate = TRUE;
761 }
762
763 ::SendMessage(GetHwnd(), EM_STREAMIN,
764 SF_TEXT |
765 SF_UNICODE |
766 (selectionOnly ? SFF_SELECTION : 0),
767 (LPARAM)&eds);
768
769 if ( eds.dwError )
770 {
771 wxLogLastError(_T("EM_STREAMIN"));
772 }
773
774 #if !wxUSE_WCHAR_T
775 free(wchBuf);
776 #endif // !wxUSE_WCHAR_T
777
778 return TRUE;
779 }
780
781 #if !wxUSE_UNICODE_MSLU
782
783 wxString
784 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
785 {
786 wxString out;
787
788 const int len = GetWindowTextLength(GetHwnd());
789
790 #if wxUSE_WCHAR_T
791 wxWCharBuffer wchBuf(len);
792 wchar_t *wpc = wchBuf.data();
793 #else
794 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
795 wchar_t *wpc = wchBuf;
796 #endif
797
798 wxStreamOutData data;
799 data.wpc = wpc;
800 data.len = len;
801
802 EDITSTREAM eds;
803 wxZeroMemory(eds);
804 eds.dwCookie = (DWORD)&data;
805 eds.pfnCallback = wxRichEditStreamOut;
806
807 ::SendMessage
808 (
809 GetHwnd(),
810 EM_STREAMOUT,
811 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
812 (LPARAM)&eds
813 );
814
815 if ( eds.dwError )
816 {
817 wxLogLastError(_T("EM_STREAMOUT"));
818 }
819 else // streamed out ok
820 {
821 // NUL-terminate the string because its length could have been
822 // decreased by wxRichEditStreamOut
823 *(wchBuf.data() + data.len) = L'\0';
824
825 // now convert to the given encoding (this is a possibly lossful
826 // conversion but what else can we do)
827 wxCSConv conv(encoding);
828 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
829 if ( lenNeeded++ )
830 {
831 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
832 }
833 }
834
835 #if !wxUSE_WCHAR_T
836 free(wchBuf);
837 #endif // !wxUSE_WCHAR_T
838
839 return out;
840 }
841
842 #endif // !wxUSE_UNICODE_MSLU
843
844 #endif // wxUSE_RICHEDIT
845
846 void wxTextCtrl::WriteText(const wxString& value)
847 {
848 DoWriteText(value);
849 }
850
851 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
852 {
853 wxString valueDos;
854 if ( m_windowStyle & wxTE_MULTILINE )
855 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
856 else
857 valueDos = value;
858
859 #if wxUSE_RICHEDIT
860 // there are several complications with the rich edit controls here
861 bool done = FALSE;
862 if ( IsRich() )
863 {
864 // first, ensure that the new text will be in the default style
865 if ( !m_defaultStyle.IsDefault() )
866 {
867 long start, end;
868 GetSelection(&start, &end);
869 SetStyle(start, end, m_defaultStyle);
870 }
871
872 #if wxUSE_UNICODE_MSLU
873 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
874 // but EM_STREAMIN works
875 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
876 {
877 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
878 }
879 #endif // wxUSE_UNICODE_MSLU
880
881 #if !wxUSE_UNICODE
882 // next check if the text we're inserting must be shown in a non
883 // default charset -- this only works for RichEdit > 1.0
884 if ( GetRichVersion() > 1 )
885 {
886 wxFont font = m_defaultStyle.GetFont();
887 if ( !font.Ok() )
888 font = GetFont();
889
890 if ( font.Ok() )
891 {
892 wxFontEncoding encoding = font.GetEncoding();
893 if ( encoding != wxFONTENCODING_SYSTEM )
894 {
895 // we have to use EM_STREAMIN to force richedit control 2.0+
896 // to show any text in the non default charset -- otherwise
897 // it thinks it knows better than we do and always shows it
898 // in the default one
899 done = StreamIn(valueDos, encoding, selectionOnly);
900 }
901 }
902 }
903 #endif // !wxUSE_UNICODE
904 }
905
906 if ( !done )
907 #endif // wxUSE_RICHEDIT
908 {
909 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
910 // call below which is confusing for the client code and so should be
911 // avoided
912 //
913 // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
914 // and there is a non empty selection currently and (b) rich text
915 // controls in any case
916 if (
917 #if wxUSE_RICHEDIT
918 IsRich() ||
919 #endif // wxUSE_RICHEDIT
920 (selectionOnly && HasSelection()) )
921 {
922 m_suppressNextUpdate = TRUE;
923 }
924
925 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
926 0, (LPARAM)valueDos.c_str());
927
928 // OTOH, non rich text controls don't generate any events at all when
929 // we use WM_SETTEXT -- have to emulate them here
930 if ( !selectionOnly
931 #if wxUSE_RICHEDIT
932 && !IsRich()
933 #endif // wxUSE_RICHEDIT
934 )
935 {
936 // Windows already sends an update event for single-line
937 // controls.
938 if ( m_windowStyle & wxTE_MULTILINE )
939 SendUpdateEvent();
940 }
941 }
942
943 AdjustSpaceLimit();
944 }
945
946 void wxTextCtrl::AppendText(const wxString& text)
947 {
948 SetInsertionPointEnd();
949
950 WriteText(text);
951
952 #if wxUSE_RICHEDIT
953 if ( IsMultiLine() && GetRichVersion() > 1 )
954 {
955 // setting the caret to the end and showing it simply doesn't work for
956 // RichEdit 2.0 -- force it to still do what we want
957 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
958 }
959 #endif // wxUSE_RICHEDIT
960 }
961
962 void wxTextCtrl::Clear()
963 {
964 ::SetWindowText(GetHwnd(), wxEmptyString);
965
966 #if wxUSE_RICHEDIT
967 if ( !IsRich() )
968 #endif // wxUSE_RICHEDIT
969 {
970 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
971 // but the normal ones don't -- make Clear() behaviour consistent by
972 // always sending this event
973
974 // Windows already sends an update event for single-line
975 // controls.
976 if ( m_windowStyle & wxTE_MULTILINE )
977 SendUpdateEvent();
978 }
979 }
980
981 #ifdef __WIN32__
982
983 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
984 {
985 SetFocus();
986
987 size_t lenOld = GetValue().length();
988
989 wxUint32 code = event.GetRawKeyCode();
990 ::keybd_event(code, 0, 0 /* key press */, 0);
991 ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
992
993 // assume that any alphanumeric key changes the total number of characters
994 // in the control - this should work in 99% of cases
995 return GetValue().length() != lenOld;
996 }
997
998 #endif // __WIN32__
999
1000 // ----------------------------------------------------------------------------
1001 // Clipboard operations
1002 // ----------------------------------------------------------------------------
1003
1004 void wxTextCtrl::Copy()
1005 {
1006 if (CanCopy())
1007 {
1008 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1009 }
1010 }
1011
1012 void wxTextCtrl::Cut()
1013 {
1014 if (CanCut())
1015 {
1016 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1017 }
1018 }
1019
1020 void wxTextCtrl::Paste()
1021 {
1022 if (CanPaste())
1023 {
1024 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1025 }
1026 }
1027
1028 bool wxTextCtrl::HasSelection() const
1029 {
1030 long from, to;
1031 GetSelection(&from, &to);
1032 return from != to;
1033 }
1034
1035 bool wxTextCtrl::CanCopy() const
1036 {
1037 // Can copy if there's a selection
1038 return HasSelection();
1039 }
1040
1041 bool wxTextCtrl::CanCut() const
1042 {
1043 return CanCopy() && IsEditable();
1044 }
1045
1046 bool wxTextCtrl::CanPaste() const
1047 {
1048 if ( !IsEditable() )
1049 return FALSE;
1050
1051 #if wxUSE_RICHEDIT
1052 if ( IsRich() )
1053 {
1054 UINT cf = 0; // 0 == any format
1055
1056 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1057 }
1058 #endif // wxUSE_RICHEDIT
1059
1060 // Standard edit control: check for straight text on clipboard
1061 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1062 return FALSE;
1063
1064 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1065 ::CloseClipboard();
1066
1067 return isTextAvailable;
1068 }
1069
1070 // ----------------------------------------------------------------------------
1071 // Accessors
1072 // ----------------------------------------------------------------------------
1073
1074 void wxTextCtrl::SetEditable(bool editable)
1075 {
1076 HWND hWnd = GetHwnd();
1077 SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1078 }
1079
1080 void wxTextCtrl::SetInsertionPoint(long pos)
1081 {
1082 DoSetSelection(pos, pos);
1083 }
1084
1085 void wxTextCtrl::SetInsertionPointEnd()
1086 {
1087 // we must not do anything if the caret is already there because calling
1088 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1089 // if it doesn't actually move the caret anywhere and so the simple fact of
1090 // doing it results in horrible flicker when appending big amounts of text
1091 // to the control in a few chunks (see DoAddText() test in the text sample)
1092 if ( GetInsertionPoint() == GetLastPosition() )
1093 return;
1094
1095 long pos;
1096
1097 #if wxUSE_RICHEDIT
1098 if ( m_verRichEdit == 1 )
1099 {
1100 // we don't have to waste time calling GetLastPosition() in this case
1101 pos = -1;
1102 }
1103 else // !RichEdit 1.0
1104 #endif // wxUSE_RICHEDIT
1105 {
1106 pos = GetLastPosition();
1107 }
1108
1109 SetInsertionPoint(pos);
1110 }
1111
1112 long wxTextCtrl::GetInsertionPoint() const
1113 {
1114 #if wxUSE_RICHEDIT
1115 if ( IsRich() )
1116 {
1117 CHARRANGE range;
1118 range.cpMin = 0;
1119 range.cpMax = 0;
1120 SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1121 return range.cpMin;
1122 }
1123 #endif // wxUSE_RICHEDIT
1124
1125 DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1126 return Pos & 0xFFFF;
1127 }
1128
1129 long wxTextCtrl::GetLastPosition() const
1130 {
1131 int numLines = GetNumberOfLines();
1132 long posStartLastLine = XYToPosition(0, numLines - 1);
1133
1134 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1135
1136 return posStartLastLine + lenLastLine;
1137 }
1138
1139 // If the return values from and to are the same, there is no
1140 // selection.
1141 void wxTextCtrl::GetSelection(long* from, long* to) const
1142 {
1143 #if wxUSE_RICHEDIT
1144 if ( IsRich() )
1145 {
1146 CHARRANGE charRange;
1147 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1148
1149 *from = charRange.cpMin;
1150 *to = charRange.cpMax;
1151 }
1152 else
1153 #endif // !wxUSE_RICHEDIT
1154 {
1155 DWORD dwStart, dwEnd;
1156 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1157
1158 *from = dwStart;
1159 *to = dwEnd;
1160 }
1161 }
1162
1163 bool wxTextCtrl::IsEditable() const
1164 {
1165 // strangely enough, we may be called before the control is created: our
1166 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1167 // us
1168 if ( !m_hWnd )
1169 return TRUE;
1170
1171 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1172
1173 return (style & ES_READONLY) == 0;
1174 }
1175
1176 // ----------------------------------------------------------------------------
1177 // selection
1178 // ----------------------------------------------------------------------------
1179
1180 void wxTextCtrl::SetSelection(long from, long to)
1181 {
1182 // if from and to are both -1, it means (in wxWindows) that all text should
1183 // be selected - translate into Windows convention
1184 if ( (from == -1) && (to == -1) )
1185 {
1186 from = 0;
1187 to = -1;
1188 }
1189
1190 DoSetSelection(from, to);
1191 }
1192
1193 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1194 {
1195 HWND hWnd = GetHwnd();
1196
1197 #ifdef __WIN32__
1198 #if wxUSE_RICHEDIT
1199 if ( IsRich() )
1200 {
1201 CHARRANGE range;
1202 range.cpMin = from;
1203 range.cpMax = to;
1204 SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1205 }
1206 else
1207 #endif // wxUSE_RICHEDIT
1208 {
1209 SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1210 }
1211
1212 if ( scrollCaret )
1213 {
1214 #if wxUSE_RICHEDIT
1215 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1216 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1217 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1218 // option is set (but it does work ok in richedit 1.0 mode...)
1219 //
1220 // so to make it work we either need to give focus to it here which
1221 // will probably create many problems (dummy focus events; window
1222 // containing the text control being brought to foreground
1223 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1224 // create other problems too -- and in fact it does because if we turn
1225 // on/off this style while appending the text to the control, the
1226 // vertical scrollbar never appears in it even if we append tons of
1227 // text and to work around this the only solution I found was to use
1228 // ES_DISABLENOSCROLL
1229 //
1230 // this is very ugly but I don't see any other way to make this work
1231 if ( GetRichVersion() > 1 )
1232 {
1233 if ( !HasFlag(wxTE_NOHIDESEL) )
1234 {
1235 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1236 ECOOP_OR, ECO_NOHIDESEL);
1237 }
1238 //else: everything is already ok
1239 }
1240 #endif // wxUSE_RICHEDIT
1241
1242 SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1243
1244 #if wxUSE_RICHEDIT
1245 // restore ECO_NOHIDESEL if we changed it
1246 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1247 {
1248 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1249 ECOOP_AND, ~ECO_NOHIDESEL);
1250 }
1251 #endif // wxUSE_RICHEDIT
1252 }
1253 #else // Win16
1254 // WPARAM is 0: selection is scrolled into view
1255 SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1256 #endif // Win32/16
1257 }
1258
1259 // ----------------------------------------------------------------------------
1260 // Working with files
1261 // ----------------------------------------------------------------------------
1262
1263 bool wxTextCtrl::LoadFile(const wxString& file)
1264 {
1265 if ( wxTextCtrlBase::LoadFile(file) )
1266 {
1267 // update the size limit if needed
1268 AdjustSpaceLimit();
1269
1270 return TRUE;
1271 }
1272
1273 return FALSE;
1274 }
1275
1276 // ----------------------------------------------------------------------------
1277 // Editing
1278 // ----------------------------------------------------------------------------
1279
1280 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1281 {
1282 // Set selection and remove it
1283 DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1284
1285 DoWriteText(value, TRUE /* selection only */);
1286 }
1287
1288 void wxTextCtrl::Remove(long from, long to)
1289 {
1290 Replace(from, to, wxEmptyString);
1291 }
1292
1293 bool wxTextCtrl::IsModified() const
1294 {
1295 return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1296 }
1297
1298 void wxTextCtrl::MarkDirty()
1299 {
1300 SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1301 }
1302
1303 void wxTextCtrl::DiscardEdits()
1304 {
1305 SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1306 }
1307
1308 int wxTextCtrl::GetNumberOfLines() const
1309 {
1310 return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1311 }
1312
1313 // ----------------------------------------------------------------------------
1314 // Positions <-> coords
1315 // ----------------------------------------------------------------------------
1316
1317 long wxTextCtrl::XYToPosition(long x, long y) const
1318 {
1319 // This gets the char index for the _beginning_ of this line
1320 long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1321
1322 return charIndex + x;
1323 }
1324
1325 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1326 {
1327 HWND hWnd = GetHwnd();
1328
1329 // This gets the line number containing the character
1330 long lineNo;
1331 #if wxUSE_RICHEDIT
1332 if ( IsRich() )
1333 {
1334 lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1335 }
1336 else
1337 #endif // wxUSE_RICHEDIT
1338 {
1339 lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1340 }
1341
1342 if ( lineNo == -1 )
1343 {
1344 // no such line
1345 return FALSE;
1346 }
1347
1348 // This gets the char index for the _beginning_ of this line
1349 long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1350 if ( charIndex == -1 )
1351 {
1352 return FALSE;
1353 }
1354
1355 // The X position must therefore be the different between pos and charIndex
1356 if ( x )
1357 *x = pos - charIndex;
1358 if ( y )
1359 *y = lineNo;
1360
1361 return TRUE;
1362 }
1363
1364 wxTextCtrlHitTestResult
1365 wxTextCtrl::HitTest(const wxPoint& pt, wxTextCoord *col, wxTextCoord *row) const
1366 {
1367 // first get the position from Windows
1368 LPARAM lParam;
1369
1370 #if wxUSE_RICHEDIT
1371 POINTL ptl;
1372 if ( IsRich() )
1373 {
1374 // for rich edit controls the position is passed iva the struct fields
1375 ptl.x = pt.x;
1376 ptl.y = pt.y;
1377 lParam = (LPARAM)&ptl;
1378 }
1379 else
1380 #endif // wxUSE_RICHEDIT
1381 {
1382 // for the plain ones, we are limited to 16 bit positions which are
1383 // combined in a single 32 bit value
1384 lParam = MAKELPARAM(pt.x, pt.y);
1385 }
1386
1387 LRESULT pos = SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1388
1389 if ( pos == -1 )
1390 {
1391 // this seems to indicate an error...
1392 return wxTE_HT_UNKNOWN;
1393 }
1394
1395 #if wxUSE_RICHEDIT
1396 if ( !IsRich() )
1397 #endif // wxUSE_RICHEDIT
1398 {
1399 // for plain EDIT controls the higher word contains something else
1400 pos = LOWORD(pos);
1401 }
1402
1403
1404 // next determine where it is relatively to our point: EM_CHARFROMPOS
1405 // always returns the closest character but we need to be more precise, so
1406 // double check that we really are where it pretends
1407 POINTL ptReal;
1408
1409 #if wxUSE_RICHEDIT
1410 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1411 // we don't know how to do it
1412 if ( IsRich() )
1413 {
1414 SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1415 }
1416 else
1417 #endif // wxUSE_RICHEDIT
1418 {
1419 LRESULT lRc = SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1420
1421 if ( lRc == -1 )
1422 {
1423 // this is apparently returned when pos corresponds to the last
1424 // position
1425 ptReal.x =
1426 ptReal.y = 0;
1427 }
1428 else
1429 {
1430 ptReal.x = LOWORD(lRc);
1431 ptReal.y = HIWORD(lRc);
1432 }
1433 }
1434
1435 wxTextCtrlHitTestResult rc;
1436
1437 if ( pt.y > ptReal.y + GetCharHeight() )
1438 rc = wxTE_HT_BELOW;
1439 else if ( pt.x > ptReal.x + GetCharWidth() )
1440 rc = wxTE_HT_BEYOND;
1441 else
1442 rc = wxTE_HT_ON_TEXT;
1443
1444 // finally translate to column/row
1445 if ( !PositionToXY(pos, col, row) )
1446 {
1447 wxFAIL_MSG( _T("PositionToXY() not expected to fail in HitTest()") );
1448 }
1449
1450 return rc;
1451 }
1452
1453 // ----------------------------------------------------------------------------
1454 //
1455 // ----------------------------------------------------------------------------
1456
1457 void wxTextCtrl::ShowPosition(long pos)
1458 {
1459 HWND hWnd = GetHwnd();
1460
1461 // To scroll to a position, we pass the number of lines and characters
1462 // to scroll *by*. This means that we need to:
1463 // (1) Find the line position of the current line.
1464 // (2) Find the line position of pos.
1465 // (3) Scroll by (pos - current).
1466 // For now, ignore the horizontal scrolling.
1467
1468 // Is this where scrolling is relative to - the line containing the caret?
1469 // Or is the first visible line??? Try first visible line.
1470 // int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1471
1472 int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1473
1474 int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1475
1476 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1477
1478 if (linesToScroll != 0)
1479 (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1480 }
1481
1482 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1483 {
1484 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1485 }
1486
1487 int wxTextCtrl::GetLineLength(long lineNo) const
1488 {
1489 long pos = XYToPosition(0, lineNo);
1490
1491 return GetLengthOfLineContainingPos(pos);
1492 }
1493
1494 wxString wxTextCtrl::GetLineText(long lineNo) const
1495 {
1496 size_t len = (size_t)GetLineLength(lineNo) + 1;
1497
1498 // there must be at least enough place for the length WORD in the
1499 // buffer
1500 len += sizeof(WORD);
1501
1502 wxString str;
1503 {
1504 wxStringBufferLength tmp(str, len);
1505 wxChar *buf = tmp;
1506
1507 *(WORD *)buf = (WORD)len;
1508 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1509
1510 #if wxUSE_RICHEDIT
1511 if ( IsRich() )
1512 {
1513 // remove the '\r' returned by the rich edit control, the user code
1514 // should never see it
1515 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1516 {
1517 buf[len - 2] = _T('\n');
1518 len--;
1519 }
1520 }
1521 #endif // wxUSE_RICHEDIT
1522
1523 // remove the '\n' at the end, if any (this is how this function is
1524 // supposed to work according to the docs)
1525 if ( buf[len - 1] == _T('\n') )
1526 {
1527 len--;
1528 }
1529
1530 buf[len] = 0;
1531 tmp.SetLength(len);
1532 }
1533
1534 return str;
1535 }
1536
1537 void wxTextCtrl::SetMaxLength(unsigned long len)
1538 {
1539 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1540 }
1541
1542 // ----------------------------------------------------------------------------
1543 // Undo/redo
1544 // ----------------------------------------------------------------------------
1545
1546 void wxTextCtrl::Undo()
1547 {
1548 if (CanUndo())
1549 {
1550 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1551 }
1552 }
1553
1554 void wxTextCtrl::Redo()
1555 {
1556 if (CanRedo())
1557 {
1558 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1559 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1560 }
1561 }
1562
1563 bool wxTextCtrl::CanUndo() const
1564 {
1565 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1566 }
1567
1568 bool wxTextCtrl::CanRedo() const
1569 {
1570 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1571 }
1572
1573 // ----------------------------------------------------------------------------
1574 // caret handling (Windows only)
1575 // ----------------------------------------------------------------------------
1576
1577 bool wxTextCtrl::ShowNativeCaret(bool show)
1578 {
1579 if ( show != m_isNativeCaretShown )
1580 {
1581 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1582 {
1583 // not an error, may simply indicate that it's not shown/hidden
1584 // yet (i.e. it had been hidden/showh 2 times before)
1585 return false;
1586 }
1587
1588 m_isNativeCaretShown = show;
1589 }
1590
1591 return true;
1592 }
1593
1594 // ----------------------------------------------------------------------------
1595 // implemenation details
1596 // ----------------------------------------------------------------------------
1597
1598 void wxTextCtrl::Command(wxCommandEvent & event)
1599 {
1600 SetValue(event.GetString());
1601 ProcessCommand (event);
1602 }
1603
1604 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1605 {
1606 // By default, load the first file into the text window.
1607 if (event.GetNumberOfFiles() > 0)
1608 {
1609 LoadFile(event.GetFiles()[0]);
1610 }
1611 }
1612
1613 // ----------------------------------------------------------------------------
1614 // kbd input processing
1615 // ----------------------------------------------------------------------------
1616
1617 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1618 {
1619 MSG *msg = (MSG *)pMsg;
1620
1621 // check for our special keys here: if we don't do it and the parent frame
1622 // uses them as accelerators, they wouldn't work at all, so we disable
1623 // usual preprocessing for them
1624 if ( msg->message == WM_KEYDOWN )
1625 {
1626 WORD vkey = (WORD) msg->wParam;
1627 if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1628 {
1629 if ( vkey == VK_BACK )
1630 return FALSE;
1631 }
1632 else // no Alt
1633 {
1634 // we want to process some Ctrl-foo and Shift-bar but no key
1635 // combinations without either Ctrl or Shift nor with both of them
1636 // pressed
1637 const int ctrl = wxIsCtrlDown(),
1638 shift = wxIsShiftDown();
1639 switch ( ctrl + shift )
1640 {
1641 default:
1642 wxFAIL_MSG( _T("how many modifiers have we got?") );
1643 // fall through
1644
1645 case 0:
1646 case 2:
1647 break;
1648
1649 case 1:
1650 // either Ctrl or Shift pressed
1651 if ( ctrl )
1652 {
1653 switch ( vkey )
1654 {
1655 case 'C':
1656 case 'V':
1657 case 'X':
1658 case VK_INSERT:
1659 case VK_DELETE:
1660 case VK_HOME:
1661 case VK_END:
1662 return FALSE;
1663 }
1664 }
1665 else // Shift is pressed
1666 {
1667 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1668 return FALSE;
1669 }
1670 }
1671 }
1672 }
1673
1674 return wxControl::MSWShouldPreProcessMessage(pMsg);
1675 }
1676
1677 void wxTextCtrl::OnChar(wxKeyEvent& event)
1678 {
1679 switch ( event.GetKeyCode() )
1680 {
1681 case WXK_RETURN:
1682 if ( !HasFlag(wxTE_MULTILINE) )
1683 {
1684 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1685 InitCommandEvent(event);
1686 event.SetString(GetValue());
1687 if ( GetEventHandler()->ProcessEvent(event) )
1688 return;
1689 }
1690 //else: multiline controls need Enter for themselves
1691
1692 break;
1693
1694 case WXK_TAB:
1695 // always produce navigation event -- even if we process TAB
1696 // ourselves the fact that we got here means that the user code
1697 // decided to skip processing of this TAB -- probably to let it
1698 // do its default job.
1699
1700 // ok, so this is getting absolutely ridiculous but I don't see
1701 // any other way to fix this bug: when a multiline text control is
1702 // inside a wxFrame, we need to generate the navigation event as
1703 // otherwise nothing happens at all, but when the same control is
1704 // created inside a dialog, IsDialogMessage() *does* switch focus
1705 // all by itself and so if we do it here as well, it is advanced
1706 // twice and goes to the next control... to prevent this from
1707 // happening we're doing this ugly check, the logic being that if
1708 // we don't have focus then it had been already changed to the next
1709 // control
1710 //
1711 // the right thing to do would, of course, be to understand what
1712 // the hell is IsDialogMessage() doing but this is beyond my feeble
1713 // forces at the moment unfortunately
1714 if ( FindFocus() == this )
1715 {
1716 wxNavigationKeyEvent eventNav;
1717 eventNav.SetDirection(!event.ShiftDown());
1718 eventNav.SetWindowChange(event.ControlDown());
1719 eventNav.SetEventObject(this);
1720
1721 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1722 return;
1723 }
1724 break;
1725 }
1726
1727 // no, we didn't process it
1728 event.Skip();
1729 }
1730
1731 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1732 {
1733 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1734
1735 if ( nMsg == WM_GETDLGCODE )
1736 {
1737 // we always want the chars and the arrows: the arrows for navigation
1738 // and the chars because we want Ctrl-C to work even in a read only
1739 // control
1740 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1741
1742 if ( IsEditable() )
1743 {
1744 // we may have several different cases:
1745 // 1. normal case: both TAB and ENTER are used for dlg navigation
1746 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1747 // next control in the dialog
1748 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1749 // navigation
1750 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1751 // to the next control
1752
1753 // the multiline edit control should always get <Return> for itself
1754 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1755 lDlgCode |= DLGC_WANTMESSAGE;
1756
1757 if ( HasFlag(wxTE_PROCESS_TAB) )
1758 lDlgCode |= DLGC_WANTTAB;
1759
1760 lRc |= lDlgCode;
1761 }
1762 else // !editable
1763 {
1764 // NB: use "=", not "|=" as the base class version returns the
1765 // same flags is this state as usual (i.e. including
1766 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1767 // native Win32 apps?) but for now live with it.
1768 lRc = lDlgCode;
1769 }
1770 }
1771
1772 return lRc;
1773 }
1774
1775 // ----------------------------------------------------------------------------
1776 // text control event processing
1777 // ----------------------------------------------------------------------------
1778
1779 bool wxTextCtrl::SendUpdateEvent()
1780 {
1781 // is event reporting suspended?
1782 if ( m_suppressNextUpdate )
1783 {
1784 // do process the next one
1785 m_suppressNextUpdate = FALSE;
1786
1787 return FALSE;
1788 }
1789
1790 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1791 InitCommandEvent(event);
1792 event.SetString(GetValue());
1793
1794 return ProcessCommand(event);
1795 }
1796
1797 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1798 {
1799 switch ( param )
1800 {
1801 case EN_SETFOCUS:
1802 case EN_KILLFOCUS:
1803 {
1804 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1805 : wxEVT_SET_FOCUS,
1806 m_windowId);
1807 event.SetEventObject(this);
1808 GetEventHandler()->ProcessEvent(event);
1809 }
1810 break;
1811
1812 case EN_CHANGE:
1813 SendUpdateEvent();
1814 break;
1815
1816 case EN_MAXTEXT:
1817 // the text size limit has been hit -- try to increase it
1818 if ( !AdjustSpaceLimit() )
1819 {
1820 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1821 InitCommandEvent(event);
1822 event.SetString(GetValue());
1823 ProcessCommand(event);
1824 }
1825 break;
1826
1827 // the other edit notification messages are not processed
1828 default:
1829 return FALSE;
1830 }
1831
1832 // processed
1833 return TRUE;
1834 }
1835
1836 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1837 #if wxUSE_CTL3D
1838 WXUINT message,
1839 WXWPARAM wParam,
1840 WXLPARAM lParam
1841 #else
1842 WXUINT WXUNUSED(message),
1843 WXWPARAM WXUNUSED(wParam),
1844 WXLPARAM WXUNUSED(lParam)
1845 #endif
1846 )
1847 {
1848 #if wxUSE_CTL3D
1849 if ( m_useCtl3D )
1850 {
1851 HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1852 return (WXHBRUSH) hbrush;
1853 }
1854 #endif // wxUSE_CTL3D
1855
1856 HDC hdc = (HDC)pDC;
1857 wxColour colBack = GetBackgroundColour();
1858
1859 if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1860 colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1861
1862 ::SetBkColor(hdc, wxColourToRGB(colBack));
1863 ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1864
1865 wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1866
1867 return (WXHBRUSH)brush->GetResourceHandle();
1868 }
1869
1870 // In WIN16, need to override normal erasing because
1871 // Ctl3D doesn't use the wxWindows background colour.
1872 #ifdef __WIN16__
1873 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1874 {
1875 wxColour col(m_backgroundColour);
1876
1877 #if wxUSE_CTL3D
1878 if (m_useCtl3D)
1879 col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1880 #endif
1881
1882 RECT rect;
1883 ::GetClientRect(GetHwnd(), &rect);
1884
1885 COLORREF ref = wxColourToRGB(col);
1886 HBRUSH hBrush = ::CreateSolidBrush(ref);
1887 if ( !hBrush )
1888 wxLogLastError(wxT("CreateSolidBrush"));
1889
1890 HDC hdc = (HDC)event.GetDC()->GetHDC();
1891
1892 int mode = ::SetMapMode(hdc, MM_TEXT);
1893
1894 ::FillRect(hdc, &rect, hBrush);
1895 ::DeleteObject(hBrush);
1896 ::SetMapMode(hdc, mode);
1897
1898 }
1899 #endif // Win16
1900
1901 bool wxTextCtrl::AdjustSpaceLimit()
1902 {
1903 #ifndef __WIN16__
1904 unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1905
1906 // HACK: we try to automatically extend the limit for the amount of text
1907 // to allow (interactively) entering more than 64Kb of text under
1908 // Win9x but we shouldn't reset the text limit which was previously
1909 // set explicitly with SetMaxLength()
1910 //
1911 // we could solve this by storing the limit we set in wxTextCtrl but
1912 // to save space we prefer to simply test here the actual limit
1913 // value: we consider that SetMaxLength() can only be called for
1914 // values < 32Kb
1915 if ( limit < 0x8000 )
1916 {
1917 // we've got more text than limit set by SetMaxLength()
1918 return FALSE;
1919 }
1920
1921 unsigned int len = ::GetWindowTextLength(GetHwnd());
1922 if ( len >= limit )
1923 {
1924 limit = len + 0x8000; // 32Kb
1925
1926 #if wxUSE_RICHEDIT
1927 if ( IsRich() )
1928 {
1929 // as a nice side effect, this also allows passing limit > 64Kb
1930 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1931 }
1932 else
1933 #endif // wxUSE_RICHEDIT
1934 {
1935 if ( limit > 0xffff )
1936 {
1937 // this will set it to a platform-dependent maximum (much more
1938 // than 64Kb under NT)
1939 limit = 0;
1940 }
1941
1942 ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1943 }
1944 }
1945 #endif // !Win16
1946
1947 // we changed the limit
1948 return TRUE;
1949 }
1950
1951 bool wxTextCtrl::AcceptsFocus() const
1952 {
1953 // we don't want focus if we can't be edited unless we're a multiline
1954 // control because then it might be still nice to get focus from keyboard
1955 // to be able to scroll it without mouse
1956 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1957 }
1958
1959 wxSize wxTextCtrl::DoGetBestSize() const
1960 {
1961 int cx, cy;
1962 wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1963
1964 int wText = DEFAULT_ITEM_WIDTH;
1965
1966 int hText = cy;
1967 if ( m_windowStyle & wxTE_MULTILINE )
1968 {
1969 hText *= wxMax(GetNumberOfLines(), 5);
1970 }
1971 //else: for single line control everything is ok
1972
1973 // we have to add the adjustments for the control height only once, not
1974 // once per line, so do it after multiplication above
1975 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
1976
1977 return wxSize(wText, hText);
1978 }
1979
1980 // ----------------------------------------------------------------------------
1981 // standard handlers for standard edit menu events
1982 // ----------------------------------------------------------------------------
1983
1984 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1985 {
1986 Cut();
1987 }
1988
1989 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1990 {
1991 Copy();
1992 }
1993
1994 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1995 {
1996 Paste();
1997 }
1998
1999 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2000 {
2001 Undo();
2002 }
2003
2004 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2005 {
2006 Redo();
2007 }
2008
2009 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2010 {
2011 long from, to;
2012 GetSelection(& from, & to);
2013 if (from != -1 && to != -1)
2014 Remove(from, to);
2015 }
2016
2017 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2018 {
2019 SetSelection(-1, -1);
2020 }
2021
2022 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2023 {
2024 event.Enable( CanCut() );
2025 }
2026
2027 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2028 {
2029 event.Enable( CanCopy() );
2030 }
2031
2032 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2033 {
2034 event.Enable( CanPaste() );
2035 }
2036
2037 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2038 {
2039 event.Enable( CanUndo() );
2040 }
2041
2042 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2043 {
2044 event.Enable( CanRedo() );
2045 }
2046
2047 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2048 {
2049 long from, to;
2050 GetSelection(& from, & to);
2051 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2052 }
2053
2054 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2055 {
2056 event.Enable(GetLastPosition() > 0);
2057 }
2058
2059 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
2060 {
2061 #if wxUSE_RICHEDIT
2062 if (IsRich())
2063 {
2064 if (!m_privateContextMenu)
2065 {
2066 m_privateContextMenu = new wxMenu;
2067 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2068 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2069 m_privateContextMenu->AppendSeparator();
2070 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2071 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2072 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2073 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2074 m_privateContextMenu->AppendSeparator();
2075 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2076 }
2077 PopupMenu(m_privateContextMenu, event.GetPosition());
2078 return;
2079 }
2080 else
2081 #endif
2082 event.Skip();
2083 }
2084
2085 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2086 {
2087 // be sure the caret remains invisible if the user had hidden it
2088 if ( !m_isNativeCaretShown )
2089 {
2090 ::HideCaret(GetHwnd());
2091 }
2092 }
2093
2094 // the rest of the file only deals with the rich edit controls
2095 #if wxUSE_RICHEDIT
2096
2097 // ----------------------------------------------------------------------------
2098 // EN_LINK processing
2099 // ----------------------------------------------------------------------------
2100
2101 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2102 {
2103 NMHDR *hdr = (NMHDR* )lParam;
2104 switch ( hdr->code )
2105 {
2106 case EN_MSGFILTER:
2107 {
2108 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2109 UINT msg = msgf->msg;
2110
2111 // this is a bit crazy but richedit 1.0 sends us all mouse
2112 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2113 // generate the wxWin events for this message manually
2114 //
2115 // NB: in fact, this is still not totally correct as it does
2116 // send us WM_LBUTTONUP if the selection was cleared by the
2117 // last click -- so currently we get 2 events in this case,
2118 // but as I don't see any obvious way to check for this I
2119 // leave this code in place because it's still better than
2120 // not getting left up events at all
2121 if ( msg == WM_LBUTTONUP )
2122 {
2123 WXUINT flags = msgf->wParam;
2124 int x = GET_X_LPARAM(msgf->lParam),
2125 y = GET_Y_LPARAM(msgf->lParam);
2126
2127 HandleMouseEvent(msg, x, y, flags);
2128 }
2129 }
2130
2131 // return TRUE to process the event (and FALSE to ignore it)
2132 return TRUE;
2133
2134 case EN_LINK:
2135 {
2136 const ENLINK *enlink = (ENLINK *)hdr;
2137
2138 switch ( enlink->msg )
2139 {
2140 case WM_SETCURSOR:
2141 // ok, so it is hardcoded - do we really nee to
2142 // customize it?
2143 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
2144 *result = TRUE;
2145 break;
2146
2147 case WM_MOUSEMOVE:
2148 case WM_LBUTTONDOWN:
2149 case WM_LBUTTONUP:
2150 case WM_LBUTTONDBLCLK:
2151 case WM_RBUTTONDOWN:
2152 case WM_RBUTTONUP:
2153 case WM_RBUTTONDBLCLK:
2154 // send a mouse event
2155 {
2156 static const wxEventType eventsMouse[] =
2157 {
2158 wxEVT_MOTION,
2159 wxEVT_LEFT_DOWN,
2160 wxEVT_LEFT_UP,
2161 wxEVT_LEFT_DCLICK,
2162 wxEVT_RIGHT_DOWN,
2163 wxEVT_RIGHT_UP,
2164 wxEVT_RIGHT_DCLICK,
2165 };
2166
2167 // the event ids are consecutive
2168 wxMouseEvent
2169 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2170
2171 InitMouseEvent(evtMouse,
2172 GET_X_LPARAM(enlink->lParam),
2173 GET_Y_LPARAM(enlink->lParam),
2174 enlink->wParam);
2175
2176 wxTextUrlEvent event(m_windowId, evtMouse,
2177 enlink->chrg.cpMin,
2178 enlink->chrg.cpMax);
2179
2180 InitCommandEvent(event);
2181
2182 *result = ProcessCommand(event);
2183 }
2184 break;
2185 }
2186 }
2187 return TRUE;
2188 }
2189
2190 // not processed, leave it to the base class
2191 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2192 }
2193
2194 // ----------------------------------------------------------------------------
2195 // colour setting for the rich edit controls
2196 // ----------------------------------------------------------------------------
2197
2198 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2199 {
2200 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2201 {
2202 // colour didn't really change
2203 return FALSE;
2204 }
2205
2206 if ( IsRich() )
2207 {
2208 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2209 // EM_SETBKGNDCOLOR additionally
2210 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2211 }
2212
2213 return TRUE;
2214 }
2215
2216 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2217 {
2218 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2219 {
2220 // colour didn't really change
2221 return FALSE;
2222 }
2223
2224 if ( IsRich() )
2225 {
2226 // change the colour of everything
2227 CHARFORMAT cf;
2228 wxZeroMemory(cf);
2229 cf.cbSize = sizeof(cf);
2230 cf.dwMask = CFM_COLOR;
2231 cf.crTextColor = wxColourToRGB(colour);
2232 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2233 }
2234
2235 return TRUE;
2236 }
2237
2238 // ----------------------------------------------------------------------------
2239 // styling support for rich edit controls
2240 // ----------------------------------------------------------------------------
2241
2242 #if wxUSE_RICHEDIT
2243
2244 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2245 {
2246 if ( !IsRich() )
2247 {
2248 // can't do it with normal text control
2249 return FALSE;
2250 }
2251
2252 // the richedit 1.0 doesn't handle setting background colour, so don't
2253 // even try to do anything if it's the only thing we want to change
2254 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2255 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2256 !style.HasTabs() )
2257 {
2258 // nothing to do: return TRUE if there was really nothing to do and
2259 // FALSE if we failed to set bg colour
2260 return !style.HasBackgroundColour();
2261 }
2262
2263 // order the range if needed
2264 if ( start > end )
2265 {
2266 long tmp = start;
2267 start = end;
2268 end = tmp;
2269 }
2270
2271 // we can only change the format of the selection, so select the range we
2272 // want and restore the old selection later
2273 long startOld, endOld;
2274 GetSelection(&startOld, &endOld);
2275
2276 // but do we really have to change the selection?
2277 bool changeSel = start != startOld || end != endOld;
2278
2279 if ( changeSel )
2280 {
2281 DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
2282 }
2283
2284 // initialize CHARFORMAT struct
2285 #if wxUSE_RICHEDIT2
2286 CHARFORMAT2 cf;
2287 #else
2288 CHARFORMAT cf;
2289 #endif
2290
2291 wxZeroMemory(cf);
2292
2293 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2294 // CHARFORMAT in that case
2295 #if wxUSE_RICHEDIT2
2296 if ( m_verRichEdit == 1 )
2297 {
2298 // this is the only thing the control is going to grok
2299 cf.cbSize = sizeof(CHARFORMAT);
2300 }
2301 else
2302 #endif
2303 {
2304 // CHARFORMAT or CHARFORMAT2
2305 cf.cbSize = sizeof(cf);
2306 }
2307
2308 if ( style.HasFont() )
2309 {
2310 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2311 // but using it doesn't seem to hurt neither so leaving it for now
2312
2313 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2314 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2315
2316 // fill in data from LOGFONT but recalculate lfHeight because we need
2317 // the real height in twips and not the negative number which
2318 // wxFillLogFont() returns (this is correct in general and works with
2319 // the Windows font mapper, but not here)
2320 LOGFONT lf;
2321 wxFillLogFont(&lf, &style.GetFont());
2322 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2323 cf.bCharSet = lf.lfCharSet;
2324 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2325 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2326
2327 // also deal with underline/italic/bold attributes: note that we must
2328 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2329 // style to allow clearing it
2330 if ( lf.lfItalic )
2331 {
2332 cf.dwEffects |= CFE_ITALIC;
2333 }
2334
2335 if ( lf.lfWeight == FW_BOLD )
2336 {
2337 cf.dwEffects |= CFE_BOLD;
2338 }
2339
2340 if ( lf.lfUnderline )
2341 {
2342 cf.dwEffects |= CFE_UNDERLINE;
2343 }
2344
2345 // strikeout fonts are not supported by wxWindows
2346 }
2347
2348 if ( style.HasTextColour() )
2349 {
2350 cf.dwMask |= CFM_COLOR;
2351 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2352 }
2353
2354 #if wxUSE_RICHEDIT2
2355 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2356 {
2357 cf.dwMask |= CFM_BACKCOLOR;
2358 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2359 }
2360 #endif // wxUSE_RICHEDIT2
2361
2362 // do format the selection
2363 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2364 SCF_SELECTION, (LPARAM)&cf) != 0;
2365 if ( !ok )
2366 {
2367 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2368 }
2369
2370 // now do the paragraph formatting
2371 PARAFORMAT2 pf;
2372 wxZeroMemory(pf);
2373 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2374 // PARAFORMAT in that case
2375 #if wxUSE_RICHEDIT2
2376 if ( m_verRichEdit == 1 )
2377 {
2378 // this is the only thing the control is going to grok
2379 pf.cbSize = sizeof(PARAFORMAT);
2380 }
2381 else
2382 #endif
2383 {
2384 // PARAFORMAT or PARAFORMAT2
2385 pf.cbSize = sizeof(pf);
2386 }
2387
2388 if (style.HasAlignment())
2389 {
2390 pf.dwMask |= PFM_ALIGNMENT;
2391 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2392 pf.wAlignment = PFA_RIGHT;
2393 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2394 pf.wAlignment = PFA_CENTER;
2395 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2396 pf.wAlignment = PFA_JUSTIFY;
2397 else
2398 pf.wAlignment = PFA_LEFT;
2399 }
2400
2401 if (style.HasLeftIndent())
2402 {
2403 pf.dwMask |= PFM_STARTINDENT;
2404
2405 // Convert from 1/10 mm to TWIPS
2406 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2407
2408 // TODO: do we need to specify dxOffset?
2409 }
2410
2411 if (style.HasRightIndent())
2412 {
2413 pf.dwMask |= PFM_RIGHTINDENT;
2414
2415 // Convert from 1/10 mm to TWIPS
2416 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2417 }
2418
2419 if (style.HasTabs())
2420 {
2421 pf.dwMask |= PFM_TABSTOPS;
2422
2423 const wxArrayInt& tabs = style.GetTabs();
2424
2425 pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2426 size_t i;
2427 for (i = 0; i < (size_t) pf.cTabCount; i++)
2428 {
2429 // Convert from 1/10 mm to TWIPS
2430 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2431 }
2432 }
2433
2434 if (pf.dwMask != 0)
2435 {
2436 // do format the selection
2437 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2438 0, (LPARAM) &pf) != 0;
2439 if ( !ok )
2440 {
2441 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2442 }
2443 }
2444
2445 if ( changeSel )
2446 {
2447 // restore the original selection
2448 DoSetSelection(startOld, endOld, FALSE);
2449 }
2450
2451 return ok;
2452 }
2453
2454 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2455 {
2456 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2457 return FALSE;
2458
2459 // we have to do this or the style wouldn't apply for the text typed by the
2460 // user
2461 long posLast = GetLastPosition();
2462 SetStyle(posLast, posLast, m_defaultStyle);
2463
2464 return TRUE;
2465 }
2466
2467 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2468 {
2469 if ( !IsRich() )
2470 {
2471 // can't do it with normal text control
2472 return FALSE;
2473 }
2474
2475 // initialize CHARFORMAT struct
2476 #if wxUSE_RICHEDIT2
2477 CHARFORMAT2 cf;
2478 #else
2479 CHARFORMAT cf;
2480 #endif
2481
2482 wxZeroMemory(cf);
2483
2484 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2485 // CHARFORMAT in that case
2486 #if wxUSE_RICHEDIT2
2487 if ( m_verRichEdit == 1 )
2488 {
2489 // this is the only thing the control is going to grok
2490 cf.cbSize = sizeof(CHARFORMAT);
2491 }
2492 else
2493 #endif
2494 {
2495 // CHARFORMAT or CHARFORMAT2
2496 cf.cbSize = sizeof(cf);
2497 }
2498 // we can only change the format of the selection, so select the range we
2499 // want and restore the old selection later
2500 long startOld, endOld;
2501 GetSelection(&startOld, &endOld);
2502
2503 // but do we really have to change the selection?
2504 bool changeSel = position != startOld || position != endOld;
2505
2506 if ( changeSel )
2507 {
2508 DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2509 }
2510
2511 // get the selection formatting
2512 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2513 SCF_SELECTION, (LPARAM)&cf) ;
2514
2515 LOGFONT lf;
2516 lf.lfHeight = cf.yHeight;
2517 lf.lfWidth = 0;
2518 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2519 lf.lfClipPrecision = 0;
2520 lf.lfEscapement = 0;
2521 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2522 if (cf.dwEffects & CFE_ITALIC)
2523 lf.lfItalic = TRUE;
2524 lf.lfOrientation = 0;
2525 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2526 lf.lfQuality = 0;
2527 if (cf.dwEffects & CFE_STRIKEOUT)
2528 lf.lfStrikeOut = TRUE;
2529 if (cf.dwEffects & CFE_UNDERLINE)
2530 lf.lfUnderline = TRUE;
2531 if (cf.dwEffects & CFE_BOLD)
2532 lf.lfWeight = FW_BOLD;
2533
2534 wxFont font = wxCreateFontFromLogFont(& lf);
2535 if (font.Ok())
2536 {
2537 style.SetFont(font);
2538 }
2539 style.SetTextColour(wxColour(cf.crTextColor));
2540
2541 #if wxUSE_RICHEDIT2
2542 if ( m_verRichEdit != 1 )
2543 {
2544 // cf.dwMask |= CFM_BACKCOLOR;
2545 style.SetBackgroundColour(wxColour(cf.crBackColor));
2546 }
2547 #endif // wxUSE_RICHEDIT2
2548
2549 // now get the paragraph formatting
2550 PARAFORMAT2 pf;
2551 wxZeroMemory(pf);
2552 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2553 // PARAFORMAT in that case
2554 #if wxUSE_RICHEDIT2
2555 if ( m_verRichEdit == 1 )
2556 {
2557 // this is the only thing the control is going to grok
2558 pf.cbSize = sizeof(PARAFORMAT);
2559 }
2560 else
2561 #endif
2562 {
2563 // PARAFORMAT or PARAFORMAT2
2564 pf.cbSize = sizeof(pf);
2565 }
2566
2567 // do format the selection
2568 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2569
2570 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2571 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2572
2573 if (pf.wAlignment == PFA_CENTER)
2574 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2575 else if (pf.wAlignment == PFA_RIGHT)
2576 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2577 else if (pf.wAlignment == PFA_JUSTIFY)
2578 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2579 else
2580 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2581
2582 wxArrayInt tabStops;
2583 size_t i;
2584 for (i = 0; i < (size_t) pf.cTabCount; i++)
2585 {
2586 tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2587 }
2588
2589 if ( changeSel )
2590 {
2591 // restore the original selection
2592 DoSetSelection(startOld, endOld, FALSE);
2593 }
2594
2595 return TRUE;
2596 }
2597
2598 #endif
2599
2600 // ----------------------------------------------------------------------------
2601 // wxRichEditModule
2602 // ----------------------------------------------------------------------------
2603
2604 bool wxRichEditModule::OnInit()
2605 {
2606 // don't do anything - we will load it when needed
2607 return TRUE;
2608 }
2609
2610 void wxRichEditModule::OnExit()
2611 {
2612 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2613 {
2614 if ( ms_hRichEdit[i] )
2615 {
2616 ::FreeLibrary(ms_hRichEdit[i]);
2617 ms_hRichEdit[i] = NULL;
2618 }
2619 }
2620 }
2621
2622 /* static */
2623 bool wxRichEditModule::Load(int version)
2624 {
2625 // we don't support loading richedit 3.0 as I don't know how to distinguish
2626 // it from 2.0 anyhow
2627 wxCHECK_MSG( version == 1 || version == 2, FALSE,
2628 _T("incorrect richedit control version requested") );
2629
2630 // make it the index in the array
2631 version--;
2632
2633 if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2634 {
2635 // we had already tried to load it and failed
2636 return FALSE;
2637 }
2638
2639 if ( ms_hRichEdit[version] )
2640 {
2641 // we've already got this one
2642 return TRUE;
2643 }
2644
2645 wxString dllname = version ? _T("riched20") : _T("riched32");
2646 dllname += _T(".dll");
2647
2648 ms_hRichEdit[version] = ::LoadLibrary(dllname);
2649
2650 if ( !ms_hRichEdit[version] )
2651 {
2652 wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2653
2654 ms_hRichEdit[version] = (HINSTANCE)-1;
2655
2656 return FALSE;
2657 }
2658
2659 return TRUE;
2660 }
2661
2662 #endif // wxUSE_RICHEDIT
2663
2664 #endif // wxUSE_TEXTCTRL