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[wxWidgets.git] / src / msw / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: msw/textctrl.cpp
3 // Purpose: wxTextCtrl
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 #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 functions
78 // ----------------------------------------------------------------------------
79
80 #if wxUSE_RICHEDIT
81
82 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
83
84 #endif // wxUSE_RICHEDIT
85
86 // ----------------------------------------------------------------------------
87 // private classes
88 // ----------------------------------------------------------------------------
89
90 #if wxUSE_RICHEDIT
91
92 // this module initializes RichEdit DLL(s) if needed
93 class wxRichEditModule : public wxModule
94 {
95 public:
96 virtual bool OnInit();
97 virtual void OnExit();
98
99 // load the richedit DLL of at least of required version
100 static bool Load(int version = 1);
101
102 private:
103 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
104 static HINSTANCE ms_hRichEdit[2];
105
106 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
107 };
108
109 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
110
111 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
112
113 #endif // wxUSE_RICHEDIT
114
115 // ----------------------------------------------------------------------------
116 // event tables and other macros
117 // ----------------------------------------------------------------------------
118
119 #if wxUSE_EXTENDED_RTTI
120 WX_DEFINE_FLAGS( wxTextCtrlStyle )
121
122 WX_BEGIN_FLAGS( wxTextCtrlStyle )
123 // new style border flags, we put them first to
124 // use them for streaming out
125 WX_FLAGS_MEMBER(wxBORDER_SIMPLE)
126 WX_FLAGS_MEMBER(wxBORDER_SUNKEN)
127 WX_FLAGS_MEMBER(wxBORDER_DOUBLE)
128 WX_FLAGS_MEMBER(wxBORDER_RAISED)
129 WX_FLAGS_MEMBER(wxBORDER_STATIC)
130 WX_FLAGS_MEMBER(wxBORDER_NONE)
131
132 // old style border flags
133 WX_FLAGS_MEMBER(wxSIMPLE_BORDER)
134 WX_FLAGS_MEMBER(wxSUNKEN_BORDER)
135 WX_FLAGS_MEMBER(wxDOUBLE_BORDER)
136 WX_FLAGS_MEMBER(wxRAISED_BORDER)
137 WX_FLAGS_MEMBER(wxSTATIC_BORDER)
138 WX_FLAGS_MEMBER(wxNO_BORDER)
139
140 // standard window styles
141 WX_FLAGS_MEMBER(wxTAB_TRAVERSAL)
142 WX_FLAGS_MEMBER(wxCLIP_CHILDREN)
143 WX_FLAGS_MEMBER(wxTRANSPARENT_WINDOW)
144 WX_FLAGS_MEMBER(wxWANTS_CHARS)
145 WX_FLAGS_MEMBER(wxNO_FULL_REPAINT_ON_RESIZE)
146 WX_FLAGS_MEMBER(wxALWAYS_SHOW_SB )
147 WX_FLAGS_MEMBER(wxVSCROLL)
148 WX_FLAGS_MEMBER(wxHSCROLL)
149
150 WX_FLAGS_MEMBER(wxTE_PROCESS_ENTER)
151 WX_FLAGS_MEMBER(wxTE_PROCESS_TAB)
152 WX_FLAGS_MEMBER(wxTE_MULTILINE)
153 WX_FLAGS_MEMBER(wxTE_PASSWORD)
154 WX_FLAGS_MEMBER(wxTE_READONLY)
155 WX_FLAGS_MEMBER(wxHSCROLL)
156 WX_FLAGS_MEMBER(wxTE_RICH)
157 WX_FLAGS_MEMBER(wxTE_RICH2)
158 WX_FLAGS_MEMBER(wxTE_AUTO_URL)
159 WX_FLAGS_MEMBER(wxTE_NOHIDESEL)
160 WX_FLAGS_MEMBER(wxTE_LEFT)
161 WX_FLAGS_MEMBER(wxTE_CENTRE)
162 WX_FLAGS_MEMBER(wxTE_RIGHT)
163 WX_FLAGS_MEMBER(wxTE_DONTWRAP)
164 WX_FLAGS_MEMBER(wxTE_LINEWRAP)
165 WX_FLAGS_MEMBER(wxTE_WORDWRAP)
166
167 WX_END_FLAGS( wxTextCtrlStyle )
168
169 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
170
171 WX_BEGIN_PROPERTIES_TABLE(wxTextCtrl)
172 WX_EVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
173 WX_EVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
174
175 WX_PROPERTY( Font , wxFont , SetFont , GetFont ,, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
176 WX_PROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
177 WX_PROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
178 WX_END_PROPERTIES_TABLE()
179
180 WX_BEGIN_HANDLERS_TABLE(wxTextCtrl)
181 WX_END_HANDLERS_TABLE()
182
183 WX_CONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
184 #else
185 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
186 #endif
187
188
189 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
190 EVT_CHAR(wxTextCtrl::OnChar)
191 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
192
193 #if wxUSE_RICHEDIT
194 EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
195 #endif
196
197 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
198 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
199 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
200 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
201 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
202 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
203 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
204
205 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
206 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
207 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
208 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
209 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
210 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
211 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
212 #ifdef __WIN16__
213 EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
214 #endif
215
216 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
217 END_EVENT_TABLE()
218
219 // ============================================================================
220 // implementation
221 // ============================================================================
222
223 // ----------------------------------------------------------------------------
224 // creation
225 // ----------------------------------------------------------------------------
226
227 void wxTextCtrl::Init()
228 {
229 #if wxUSE_RICHEDIT
230 m_verRichEdit = 0;
231 #endif // wxUSE_RICHEDIT
232
233 m_privateContextMenu = NULL;
234 m_suppressNextUpdate = FALSE;
235 m_isNativeCaretShown = true;
236 }
237
238 wxTextCtrl::~wxTextCtrl()
239 {
240 if (m_privateContextMenu)
241 {
242 delete m_privateContextMenu;
243 m_privateContextMenu = NULL;
244 }
245 }
246
247 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
248 const wxString& value,
249 const wxPoint& pos,
250 const wxSize& size,
251 long style,
252 const wxValidator& validator,
253 const wxString& name)
254 {
255 // base initialization
256 if ( !CreateBase(parent, id, pos, size, style, validator, name) )
257 return FALSE;
258
259 if ( parent )
260 parent->AddChild(this);
261
262 // translate wxWin style flags to MSW ones
263 WXDWORD msStyle = MSWGetCreateWindowFlags();
264
265 // do create the control - either an EDIT or RICHEDIT
266 wxString windowClass = wxT("EDIT");
267
268 #if wxUSE_RICHEDIT
269 if ( m_windowStyle & wxTE_AUTO_URL )
270 {
271 // automatic URL detection only works in RichEdit 2.0+
272 m_windowStyle |= wxTE_RICH2;
273 }
274
275 if ( m_windowStyle & wxTE_RICH2 )
276 {
277 // using richedit 2.0 implies using wxTE_RICH
278 m_windowStyle |= wxTE_RICH;
279 }
280
281 // we need to load the richedit DLL before creating the rich edit control
282 if ( m_windowStyle & wxTE_RICH )
283 {
284 static bool s_errorGiven = FALSE;// MT-FIXME
285
286 // Which version do we need? Use 1.0 by default because it is much more
287 // like the the standard EDIT or 2.0 if explicitly requested, but use
288 // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
289 //
290 // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
291 // (and thus EDIT) much better than RichEdit 2.0 so we probably
292 // should use 3.0 if available as it is the best of both worlds -
293 // but as I can't test it right now I don't do it (VZ)
294 #if wxUSE_UNICODE
295 const int verRichEdit = 2;
296 #else // !wxUSE_UNICODE
297 int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
298 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
299
300 // only give the error msg once if the DLL can't be loaded
301 if ( !s_errorGiven )
302 {
303 // try to load the RichEdit DLL (will do nothing if already done)
304 if ( !wxRichEditModule::Load(verRichEdit) )
305 {
306 #if !wxUSE_UNICODE
307 // try another version?
308 verRichEdit = 3 - verRichEdit; // 1 <-> 2
309
310 if ( !wxRichEditModule::Load(verRichEdit) )
311 #endif // wxUSE_UNICODE
312 {
313 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
314
315 s_errorGiven = TRUE;
316 }
317 }
318 }
319
320 // have we managed to load any richedit version?
321 if ( !s_errorGiven )
322 {
323 m_verRichEdit = verRichEdit;
324 if ( m_verRichEdit == 1 )
325 {
326 windowClass = wxT("RICHEDIT");
327 }
328 else
329 {
330 #ifndef RICHEDIT_CLASS
331 wxString RICHEDIT_CLASS;
332 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
333 #if wxUSE_UNICODE
334 RICHEDIT_CLASS += _T('W');
335 #else // ANSI
336 RICHEDIT_CLASS += _T('A');
337 #endif // Unicode/ANSI
338 #endif // !RICHEDIT_CLASS
339
340 windowClass = RICHEDIT_CLASS;
341 }
342 }
343 }
344 #endif // wxUSE_RICHEDIT
345
346 // we need to turn '\n's into "\r\n"s for the multiline controls
347 wxString valueWin;
348 if ( m_windowStyle & wxTE_MULTILINE )
349 {
350 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
351 }
352 else // single line
353 {
354 valueWin = value;
355 }
356
357 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
358 return FALSE;
359
360 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
361
362 #if wxUSE_RICHEDIT
363 if ( IsRich() )
364 {
365 // enable the events we're interested in: we want to get EN_CHANGE as
366 // for the normal controls
367 LPARAM mask = ENM_CHANGE;
368
369 if ( GetRichVersion() == 1 )
370 {
371 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
372 // explained in its handler
373 mask |= ENM_MOUSEEVENTS;
374 }
375 else if ( m_windowStyle & wxTE_AUTO_URL )
376 {
377 mask |= ENM_LINK;
378
379 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
380 }
381
382 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
383 }
384 #endif // wxUSE_RICHEDIT
385
386 return TRUE;
387 }
388
389 // Make sure the window style (etc.) reflects the HWND style (roughly)
390 void wxTextCtrl::AdoptAttributesFromHWND()
391 {
392 wxWindow::AdoptAttributesFromHWND();
393
394 HWND hWnd = GetHwnd();
395 long style = ::GetWindowLong(hWnd, GWL_STYLE);
396
397 // retrieve the style to see whether this is an edit or richedit ctrl
398 #if wxUSE_RICHEDIT
399 wxString classname = wxGetWindowClass(GetHWND());
400
401 if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
402 {
403 m_verRichEdit = 0;
404 }
405 else // rich edit?
406 {
407 wxChar c;
408 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
409 {
410 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
411
412 m_verRichEdit = 0;
413 }
414 }
415 #endif // wxUSE_RICHEDIT
416
417 if (style & ES_MULTILINE)
418 m_windowStyle |= wxTE_MULTILINE;
419 if (style & ES_PASSWORD)
420 m_windowStyle |= wxTE_PASSWORD;
421 if (style & ES_READONLY)
422 m_windowStyle |= wxTE_READONLY;
423 if (style & ES_WANTRETURN)
424 m_windowStyle |= wxTE_PROCESS_ENTER;
425 if (style & ES_CENTER)
426 m_windowStyle |= wxTE_CENTRE;
427 if (style & ES_RIGHT)
428 m_windowStyle |= wxTE_RIGHT;
429 }
430
431 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
432 {
433 long msStyle = wxControl::MSWGetStyle(style, exstyle);
434
435 // styles which we alaways add by default
436 if ( style & wxTE_MULTILINE )
437 {
438 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
439 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
440
441 msStyle |= ES_MULTILINE | ES_WANTRETURN;
442 if ( !(style & wxTE_NO_VSCROLL) )
443 {
444 // always adjust the vertical scrollbar automatically if we have it
445 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
446
447 #if wxUSE_RICHEDIT
448 // we have to use this style for the rich edit controls because
449 // without it the vertical scrollbar never appears at all in
450 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
451 if ( style & wxTE_RICH2 )
452 {
453 msStyle |= ES_DISABLENOSCROLL;
454 }
455 #endif // wxUSE_RICHEDIT
456 }
457
458 style |= wxTE_PROCESS_ENTER;
459 }
460 else // !multiline
461 {
462 // there is really no reason to not have this style for single line
463 // text controls
464 msStyle |= ES_AUTOHSCROLL;
465 }
466
467 // styles which we add depending on the specified wxWindows styles
468 if ( style & wxHSCROLL )
469 {
470 // automatically scroll the control horizontally as necessary
471 msStyle |= WS_HSCROLL;// | ES_AUTOHSCROLL;
472 }
473
474 if ( style & wxTE_READONLY )
475 msStyle |= ES_READONLY;
476
477 if ( style & wxTE_PASSWORD )
478 msStyle |= ES_PASSWORD;
479
480 if ( style & wxTE_NOHIDESEL )
481 msStyle |= ES_NOHIDESEL;
482
483 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
484 if ( style & wxTE_CENTRE )
485 msStyle |= ES_CENTER;
486 else if ( style & wxTE_RIGHT )
487 msStyle |= ES_RIGHT;
488 else
489 msStyle |= ES_LEFT; // ES_LEFT if 0 as well but for consistency...
490
491 return msStyle;
492 }
493
494 void wxTextCtrl::SetWindowStyleFlag(long style)
495 {
496 #if wxUSE_RICHEDIT
497 // we have to deal with some styles separately because they can't be
498 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
499 // using richedit-specific EM_SETOPTIONS
500 if ( IsRich() &&
501 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
502 {
503 bool set = (style & wxTE_NOHIDESEL) != 0;
504
505 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
506 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
507 }
508 #endif // wxUSE_RICHEDIT
509
510 wxControl::SetWindowStyleFlag(style);
511 }
512
513 // ----------------------------------------------------------------------------
514 // set/get the controls text
515 // ----------------------------------------------------------------------------
516
517 wxString wxTextCtrl::GetValue() const
518 {
519 // range 0..-1 is special for GetRange() and means to retrieve all text
520 return GetRange(0, -1);
521 }
522
523 wxString wxTextCtrl::GetRange(long from, long to) const
524 {
525 wxString str;
526
527 if ( from >= to && to != -1 )
528 {
529 // nothing to retrieve
530 return str;
531 }
532
533 #if wxUSE_RICHEDIT
534 if ( IsRich() )
535 {
536 int len = GetWindowTextLength(GetHwnd());
537 if ( len > from )
538 {
539 {
540 // alloc one extra WORD as needed by the control
541 wxStringBuffer tmp(str, ++len);
542 wxChar *p = tmp;
543
544 TEXTRANGE textRange;
545 textRange.chrg.cpMin = from;
546 textRange.chrg.cpMax = to == -1 ? len : to;
547 textRange.lpstrText = p;
548
549 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE,
550 0, (LPARAM)&textRange);
551
552 if ( m_verRichEdit > 1 )
553 {
554 // RichEdit 2.0 uses just CR ('\r') for the
555 // newlines which is neither Unix nor Windows
556 // style - convert it to something reasonable
557 for ( ; *p; p++ )
558 {
559 if ( *p == _T('\r') )
560 *p = _T('\n');
561 }
562 }
563 }
564
565 if ( m_verRichEdit == 1 )
566 {
567 // convert to the canonical form - see comment below
568 str = wxTextFile::Translate(str, wxTextFileType_Unix);
569 }
570 }
571 //else: no text at all, leave the string empty
572 }
573 else
574 #endif // wxUSE_RICHEDIT
575 {
576 // retrieve all text
577 str = wxGetWindowText(GetHWND());
578
579 // need only a range?
580 if ( from < to )
581 {
582 str = str.Mid(from, to - from);
583 }
584
585 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
586 // canonical one (same one as above) for consistency with the other kinds
587 // of controls and, more importantly, with the other ports
588 str = wxTextFile::Translate(str, wxTextFileType_Unix);
589 }
590
591 return str;
592 }
593
594 void wxTextCtrl::SetValue(const wxString& value)
595 {
596 // if the text is long enough, it's faster to just set it instead of first
597 // comparing it with the old one (chances are that it will be different
598 // anyhow, this comparison is there to avoid flicker for small single-line
599 // edit controls mostly)
600 if ( (value.length() > 0x400) || (value != GetValue()) )
601 {
602 DoWriteText(value, FALSE /* not selection only */);
603 }
604 else // same text
605 {
606 // still send an event for consistency
607 SendUpdateEvent();
608 }
609
610 // we should reset the modified flag even if the value didn't really change
611
612 // mark the control as being not dirty - we changed its text, not the
613 // user
614 DiscardEdits();
615
616 // for compatibility, don't move the cursor when doing SetValue()
617 SetInsertionPoint(0);
618 }
619
620 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
621
622 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
623 {
624 *pcb = 0;
625
626 wchar_t *wbuf = (wchar_t *)buf;
627 const wchar_t *wpc = *(const wchar_t **)dwCookie;
628 while ( cb && *wpc )
629 {
630 *wbuf++ = *wpc++;
631
632 cb -= sizeof(wchar_t);
633 (*pcb) += sizeof(wchar_t);
634 }
635
636 *(const wchar_t **)dwCookie = wpc;
637
638 return 0;
639 }
640
641 // from utils.cpp
642 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
643
644 #if wxUSE_UNICODE_MSLU
645 bool wxTextCtrl::StreamIn(const wxString& value,
646 wxFontEncoding WXUNUSED(encoding),
647 bool selectionOnly)
648 {
649 const wchar_t *wpc = value.c_str();
650 #else // !wxUSE_UNICODE_MSLU
651 bool wxTextCtrl::StreamIn(const wxString& value,
652 wxFontEncoding encoding,
653 bool selectionOnly)
654 {
655 // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
656 // text in the non default charset -- otherwise it thinks it knows better
657 // than we do and always shows it in the default one
658
659 // first get the Windows code page for this encoding
660 long codepage = wxEncodingToCodepage(encoding);
661 if ( codepage == -1 )
662 {
663 // unknown encoding
664 return FALSE;
665 }
666
667 // next translate to Unicode using this code page
668 int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
669
670 #if wxUSE_WCHAR_T
671 wxWCharBuffer wchBuf(len);
672 #else
673 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
674 #endif
675
676 if ( !::MultiByteToWideChar(codepage, 0, value, -1,
677 (wchar_t *)(const wchar_t *)wchBuf, len) )
678 {
679 wxLogLastError(_T("MultiByteToWideChar"));
680 }
681
682 // finally, stream it in the control
683 const wchar_t *wpc = wchBuf;
684 #endif // wxUSE_UNICODE_MSLU
685
686 EDITSTREAM eds;
687 wxZeroMemory(eds);
688 eds.dwCookie = (DWORD)&wpc;
689 // the cast below is needed for broken (very) old mingw32 headers
690 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
691
692 // we're going to receive 2 EN_CHANGE notifications if we got any selection
693 // (same problem as in DoWriteText())
694 if ( selectionOnly && HasSelection() )
695 {
696 // so suppress one of them
697 m_suppressNextUpdate = TRUE;
698 }
699
700 ::SendMessage(GetHwnd(), EM_STREAMIN,
701 SF_TEXT |
702 SF_UNICODE |
703 (selectionOnly ? SFF_SELECTION : 0),
704 (LPARAM)&eds);
705
706 if ( eds.dwError )
707 {
708 wxLogLastError(_T("EM_STREAMIN"));
709 }
710
711 #if !wxUSE_WCHAR_T
712 free(wchBuf);
713 #endif // !wxUSE_WCHAR_T
714
715 return TRUE;
716 }
717
718 #endif // wxUSE_RICHEDIT
719
720 void wxTextCtrl::WriteText(const wxString& value)
721 {
722 DoWriteText(value);
723 }
724
725 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
726 {
727 wxString valueDos;
728 if ( m_windowStyle & wxTE_MULTILINE )
729 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
730 else
731 valueDos = value;
732
733 #if wxUSE_RICHEDIT
734 // there are several complications with the rich edit controls here
735 bool done = FALSE;
736 if ( IsRich() )
737 {
738 // first, ensure that the new text will be in the default style
739 if ( !m_defaultStyle.IsDefault() )
740 {
741 long start, end;
742 GetSelection(&start, &end);
743 SetStyle(start, end, m_defaultStyle);
744 }
745
746 #if wxUSE_UNICODE_MSLU
747 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
748 // but EM_STREAMIN works
749 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
750 {
751 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
752 }
753 #endif // wxUSE_UNICODE_MSLU
754
755 #if !wxUSE_UNICODE
756 // next check if the text we're inserting must be shown in a non
757 // default charset -- this only works for RichEdit > 1.0
758 if ( GetRichVersion() > 1 )
759 {
760 wxFont font = m_defaultStyle.GetFont();
761 if ( !font.Ok() )
762 font = GetFont();
763
764 if ( font.Ok() )
765 {
766 wxFontEncoding encoding = font.GetEncoding();
767 if ( encoding != wxFONTENCODING_SYSTEM )
768 {
769 done = StreamIn(valueDos, encoding, selectionOnly);
770 }
771 }
772 }
773 #endif // !wxUSE_UNICODE
774 }
775
776 if ( !done )
777 #endif // wxUSE_RICHEDIT
778 {
779 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
780 // call below which is confusing for the client code and so should be
781 // avoided
782 //
783 // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
784 // and there is a non empty selection currently and (b) rich text
785 // controls in any case
786 if (
787 #if wxUSE_RICHEDIT
788 IsRich() ||
789 #endif // wxUSE_RICHEDIT
790 (selectionOnly && HasSelection()) )
791 {
792 m_suppressNextUpdate = TRUE;
793 }
794
795 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
796 0, (LPARAM)valueDos.c_str());
797
798 // OTOH, non rich text controls don't generate any events at all when
799 // we use WM_SETTEXT -- have to emulate them here
800 if ( !selectionOnly
801 #if wxUSE_RICHEDIT
802 && !IsRich()
803 #endif // wxUSE_RICHEDIT
804 )
805 {
806 // Windows already sends an update event for single-line
807 // controls.
808 if ( m_windowStyle & wxTE_MULTILINE )
809 SendUpdateEvent();
810 }
811 }
812
813 AdjustSpaceLimit();
814 }
815
816 void wxTextCtrl::AppendText(const wxString& text)
817 {
818 SetInsertionPointEnd();
819
820 WriteText(text);
821
822 #if wxUSE_RICHEDIT
823 if ( IsMultiLine() && GetRichVersion() > 1 )
824 {
825 // setting the caret to the end and showing it simply doesn't work for
826 // RichEdit 2.0 -- force it to still do what we want
827 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
828 }
829 #endif // wxUSE_RICHEDIT
830 }
831
832 void wxTextCtrl::Clear()
833 {
834 ::SetWindowText(GetHwnd(), wxEmptyString);
835
836 #if wxUSE_RICHEDIT
837 if ( !IsRich() )
838 #endif // wxUSE_RICHEDIT
839 {
840 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
841 // but the normal ones don't -- make Clear() behaviour consistent by
842 // always sending this event
843
844 // Windows already sends an update event for single-line
845 // controls.
846 if ( m_windowStyle & wxTE_MULTILINE )
847 SendUpdateEvent();
848 }
849 }
850
851 #ifdef __WIN32__
852
853 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
854 {
855 SetFocus();
856
857 size_t lenOld = GetValue().length();
858
859 wxUint32 code = event.GetRawKeyCode();
860 ::keybd_event(code, 0, 0 /* key press */, 0);
861 ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
862
863 // assume that any alphanumeric key changes the total number of characters
864 // in the control - this should work in 99% of cases
865 return GetValue().length() != lenOld;
866 }
867
868 #endif // __WIN32__
869
870 // ----------------------------------------------------------------------------
871 // Clipboard operations
872 // ----------------------------------------------------------------------------
873
874 void wxTextCtrl::Copy()
875 {
876 if (CanCopy())
877 {
878 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
879 }
880 }
881
882 void wxTextCtrl::Cut()
883 {
884 if (CanCut())
885 {
886 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
887 }
888 }
889
890 void wxTextCtrl::Paste()
891 {
892 if (CanPaste())
893 {
894 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
895 }
896 }
897
898 bool wxTextCtrl::HasSelection() const
899 {
900 long from, to;
901 GetSelection(&from, &to);
902 return from != to;
903 }
904
905 bool wxTextCtrl::CanCopy() const
906 {
907 // Can copy if there's a selection
908 return HasSelection();
909 }
910
911 bool wxTextCtrl::CanCut() const
912 {
913 return CanCopy() && IsEditable();
914 }
915
916 bool wxTextCtrl::CanPaste() const
917 {
918 if ( !IsEditable() )
919 return FALSE;
920
921 #if wxUSE_RICHEDIT
922 if ( IsRich() )
923 {
924 UINT cf = 0; // 0 == any format
925
926 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
927 }
928 #endif // wxUSE_RICHEDIT
929
930 // Standard edit control: check for straight text on clipboard
931 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
932 return FALSE;
933
934 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
935 ::CloseClipboard();
936
937 return isTextAvailable;
938 }
939
940 // ----------------------------------------------------------------------------
941 // Accessors
942 // ----------------------------------------------------------------------------
943
944 void wxTextCtrl::SetEditable(bool editable)
945 {
946 HWND hWnd = GetHwnd();
947 SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
948 }
949
950 void wxTextCtrl::SetInsertionPoint(long pos)
951 {
952 DoSetSelection(pos, pos);
953 }
954
955 void wxTextCtrl::SetInsertionPointEnd()
956 {
957 // we must not do anything if the caret is already there because calling
958 // SetInsertionPoint() thaws the controls if Freeze() had been called even
959 // if it doesn't actually move the caret anywhere and so the simple fact of
960 // doing it results in horrible flicker when appending big amounts of text
961 // to the control in a few chunks (see DoAddText() test in the text sample)
962 if ( GetInsertionPoint() == GetLastPosition() )
963 return;
964
965 long pos;
966
967 #if wxUSE_RICHEDIT
968 if ( m_verRichEdit == 1 )
969 {
970 // we don't have to waste time calling GetLastPosition() in this case
971 pos = -1;
972 }
973 else // !RichEdit 1.0
974 #endif // wxUSE_RICHEDIT
975 {
976 pos = GetLastPosition();
977 }
978
979 SetInsertionPoint(pos);
980 }
981
982 long wxTextCtrl::GetInsertionPoint() const
983 {
984 #if wxUSE_RICHEDIT
985 if ( IsRich() )
986 {
987 CHARRANGE range;
988 range.cpMin = 0;
989 range.cpMax = 0;
990 SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
991 return range.cpMin;
992 }
993 #endif // wxUSE_RICHEDIT
994
995 DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
996 return Pos & 0xFFFF;
997 }
998
999 long wxTextCtrl::GetLastPosition() const
1000 {
1001 int numLines = GetNumberOfLines();
1002 long posStartLastLine = XYToPosition(0, numLines - 1);
1003
1004 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1005
1006 return posStartLastLine + lenLastLine;
1007 }
1008
1009 // If the return values from and to are the same, there is no
1010 // selection.
1011 void wxTextCtrl::GetSelection(long* from, long* to) const
1012 {
1013 #if wxUSE_RICHEDIT
1014 if ( IsRich() )
1015 {
1016 CHARRANGE charRange;
1017 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1018
1019 *from = charRange.cpMin;
1020 *to = charRange.cpMax;
1021 }
1022 else
1023 #endif // !wxUSE_RICHEDIT
1024 {
1025 DWORD dwStart, dwEnd;
1026 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1027
1028 *from = dwStart;
1029 *to = dwEnd;
1030 }
1031 }
1032
1033 bool wxTextCtrl::IsEditable() const
1034 {
1035 // strangely enough, we may be called before the control is created: our
1036 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1037 // us
1038 if ( !m_hWnd )
1039 return TRUE;
1040
1041 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1042
1043 return (style & ES_READONLY) == 0;
1044 }
1045
1046 // ----------------------------------------------------------------------------
1047 // selection
1048 // ----------------------------------------------------------------------------
1049
1050 void wxTextCtrl::SetSelection(long from, long to)
1051 {
1052 // if from and to are both -1, it means (in wxWindows) that all text should
1053 // be selected - translate into Windows convention
1054 if ( (from == -1) && (to == -1) )
1055 {
1056 from = 0;
1057 to = -1;
1058 }
1059
1060 DoSetSelection(from, to);
1061 }
1062
1063 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1064 {
1065 HWND hWnd = GetHwnd();
1066
1067 #ifdef __WIN32__
1068 #if wxUSE_RICHEDIT
1069 if ( IsRich() )
1070 {
1071 CHARRANGE range;
1072 range.cpMin = from;
1073 range.cpMax = to;
1074 SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1075 }
1076 else
1077 #endif // wxUSE_RICHEDIT
1078 {
1079 SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1080 }
1081
1082 if ( scrollCaret )
1083 {
1084 #if wxUSE_RICHEDIT
1085 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1086 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1087 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1088 // option is set (but it does work ok in richedit 1.0 mode...)
1089 //
1090 // so to make it work we either need to give focus to it here which
1091 // will probably create many problems (dummy focus events; window
1092 // containing the text control being brought to foreground
1093 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1094 // create other problems too -- and in fact it does because if we turn
1095 // on/off this style while appending the text to the control, the
1096 // vertical scrollbar never appears in it even if we append tons of
1097 // text and to work around this the only solution I found was to use
1098 // ES_DISABLENOSCROLL
1099 //
1100 // this is very ugly but I don't see any other way to make this work
1101 if ( GetRichVersion() > 1 )
1102 {
1103 if ( !HasFlag(wxTE_NOHIDESEL) )
1104 {
1105 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1106 ECOOP_OR, ECO_NOHIDESEL);
1107 }
1108 //else: everything is already ok
1109 }
1110 #endif // wxUSE_RICHEDIT
1111
1112 SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1113
1114 #if wxUSE_RICHEDIT
1115 // restore ECO_NOHIDESEL if we changed it
1116 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1117 {
1118 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1119 ECOOP_AND, ~ECO_NOHIDESEL);
1120 }
1121 #endif // wxUSE_RICHEDIT
1122 }
1123 #else // Win16
1124 // WPARAM is 0: selection is scrolled into view
1125 SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1126 #endif // Win32/16
1127 }
1128
1129 // ----------------------------------------------------------------------------
1130 // Editing
1131 // ----------------------------------------------------------------------------
1132
1133 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1134 {
1135 // Set selection and remove it
1136 DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1137
1138 SendMessage(GetHwnd(), EM_REPLACESEL,
1139 #ifdef __WIN32__
1140 TRUE,
1141 #else
1142 FALSE,
1143 #endif
1144 (LPARAM)value.c_str());
1145 }
1146
1147 void wxTextCtrl::Remove(long from, long to)
1148 {
1149 Replace(from, to, wxEmptyString);
1150 }
1151
1152 bool wxTextCtrl::LoadFile(const wxString& file)
1153 {
1154 if ( wxTextCtrlBase::LoadFile(file) )
1155 {
1156 // update the size limit if needed
1157 AdjustSpaceLimit();
1158
1159 return TRUE;
1160 }
1161
1162 return FALSE;
1163 }
1164
1165 bool wxTextCtrl::IsModified() const
1166 {
1167 return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1168 }
1169
1170 // Makes 'unmodified'
1171 void wxTextCtrl::DiscardEdits()
1172 {
1173 SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1174 }
1175
1176 int wxTextCtrl::GetNumberOfLines() const
1177 {
1178 return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1179 }
1180
1181 long wxTextCtrl::XYToPosition(long x, long y) const
1182 {
1183 // This gets the char index for the _beginning_ of this line
1184 long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1185
1186 return charIndex + x;
1187 }
1188
1189 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1190 {
1191 HWND hWnd = GetHwnd();
1192
1193 // This gets the line number containing the character
1194 long lineNo;
1195 #if wxUSE_RICHEDIT
1196 if ( IsRich() )
1197 {
1198 lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1199 }
1200 else
1201 #endif // wxUSE_RICHEDIT
1202 {
1203 lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1204 }
1205
1206 if ( lineNo == -1 )
1207 {
1208 // no such line
1209 return FALSE;
1210 }
1211
1212 // This gets the char index for the _beginning_ of this line
1213 long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1214 if ( charIndex == -1 )
1215 {
1216 return FALSE;
1217 }
1218
1219 // The X position must therefore be the different between pos and charIndex
1220 if ( x )
1221 *x = pos - charIndex;
1222 if ( y )
1223 *y = lineNo;
1224
1225 return TRUE;
1226 }
1227
1228 void wxTextCtrl::ShowPosition(long pos)
1229 {
1230 HWND hWnd = GetHwnd();
1231
1232 // To scroll to a position, we pass the number of lines and characters
1233 // to scroll *by*. This means that we need to:
1234 // (1) Find the line position of the current line.
1235 // (2) Find the line position of pos.
1236 // (3) Scroll by (pos - current).
1237 // For now, ignore the horizontal scrolling.
1238
1239 // Is this where scrolling is relative to - the line containing the caret?
1240 // Or is the first visible line??? Try first visible line.
1241 // int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1242
1243 int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1244
1245 int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1246
1247 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1248
1249 if (linesToScroll != 0)
1250 (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1251 }
1252
1253 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1254 {
1255 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1256 }
1257
1258 int wxTextCtrl::GetLineLength(long lineNo) const
1259 {
1260 long pos = XYToPosition(0, lineNo);
1261
1262 return GetLengthOfLineContainingPos(pos);
1263 }
1264
1265 wxString wxTextCtrl::GetLineText(long lineNo) const
1266 {
1267 size_t len = (size_t)GetLineLength(lineNo) + 1;
1268
1269 // there must be at least enough place for the length WORD in the
1270 // buffer
1271 len += sizeof(WORD);
1272
1273 wxString str;
1274 {
1275 wxStringBufferLength tmp(str, len);
1276 wxChar *buf = tmp;
1277
1278 *(WORD *)buf = (WORD)len;
1279 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE,
1280 lineNo, (LPARAM)buf);
1281 buf[len] = 0;
1282 tmp.SetLength(len);
1283 }
1284
1285 return str;
1286 }
1287
1288 void wxTextCtrl::SetMaxLength(unsigned long len)
1289 {
1290 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1291 }
1292
1293 // ----------------------------------------------------------------------------
1294 // Undo/redo
1295 // ----------------------------------------------------------------------------
1296
1297 void wxTextCtrl::Undo()
1298 {
1299 if (CanUndo())
1300 {
1301 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1302 }
1303 }
1304
1305 void wxTextCtrl::Redo()
1306 {
1307 if (CanRedo())
1308 {
1309 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1310 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1311 }
1312 }
1313
1314 bool wxTextCtrl::CanUndo() const
1315 {
1316 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1317 }
1318
1319 bool wxTextCtrl::CanRedo() const
1320 {
1321 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1322 }
1323
1324 // ----------------------------------------------------------------------------
1325 // caret handling (Windows only)
1326 // ----------------------------------------------------------------------------
1327
1328 bool wxTextCtrl::ShowNativeCaret(bool show)
1329 {
1330 if ( show != m_isNativeCaretShown )
1331 {
1332 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1333 {
1334 // not an error, may simply indicate that it's not shown/hidden
1335 // yet (i.e. it had been hidden/showh 2 times before)
1336 return false;
1337 }
1338
1339 m_isNativeCaretShown = show;
1340 }
1341
1342 return true;
1343 }
1344
1345 // ----------------------------------------------------------------------------
1346 // implemenation details
1347 // ----------------------------------------------------------------------------
1348
1349 void wxTextCtrl::Command(wxCommandEvent & event)
1350 {
1351 SetValue(event.GetString());
1352 ProcessCommand (event);
1353 }
1354
1355 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1356 {
1357 // By default, load the first file into the text window.
1358 if (event.GetNumberOfFiles() > 0)
1359 {
1360 LoadFile(event.GetFiles()[0]);
1361 }
1362 }
1363
1364 // ----------------------------------------------------------------------------
1365 // kbd input processing
1366 // ----------------------------------------------------------------------------
1367
1368 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1369 {
1370 MSG *msg = (MSG *)pMsg;
1371
1372 // check for our special keys here: if we don't do it and the parent frame
1373 // uses them as accelerators, they wouldn't work at all, so we disable
1374 // usual preprocessing for them
1375 if ( msg->message == WM_KEYDOWN )
1376 {
1377 WORD vkey = (WORD) msg->wParam;
1378 if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1379 {
1380 if ( vkey == VK_BACK )
1381 return FALSE;
1382 }
1383 else // no Alt
1384 {
1385 // we want to process some Ctrl-foo and Shift-bar but no key
1386 // combinations without either Ctrl or Shift nor with both of them
1387 // pressed
1388 const int ctrl = wxIsCtrlDown(),
1389 shift = wxIsShiftDown();
1390 switch ( ctrl + shift )
1391 {
1392 default:
1393 wxFAIL_MSG( _T("how many modifiers have we got?") );
1394 // fall through
1395
1396 case 0:
1397 case 2:
1398 break;
1399
1400 case 1:
1401 // either Ctrl or Shift pressed
1402 if ( ctrl )
1403 {
1404 switch ( vkey )
1405 {
1406 case 'C':
1407 case 'V':
1408 case 'X':
1409 case VK_INSERT:
1410 case VK_DELETE:
1411 case VK_HOME:
1412 case VK_END:
1413 return FALSE;
1414 }
1415 }
1416 else // Shift is pressed
1417 {
1418 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1419 return FALSE;
1420 }
1421 }
1422 }
1423 }
1424
1425 return wxControl::MSWShouldPreProcessMessage(pMsg);
1426 }
1427
1428 void wxTextCtrl::OnChar(wxKeyEvent& event)
1429 {
1430 switch ( event.GetKeyCode() )
1431 {
1432 case WXK_RETURN:
1433 if ( !(m_windowStyle & wxTE_MULTILINE) )
1434 {
1435 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1436 InitCommandEvent(event);
1437 event.SetString(GetValue());
1438 if ( GetEventHandler()->ProcessEvent(event) )
1439 return;
1440 }
1441 //else: multiline controls need Enter for themselves
1442
1443 break;
1444
1445 case WXK_TAB:
1446 // always produce navigation event - even if we process TAB
1447 // ourselves the fact that we got here means that the user code
1448 // decided to skip processing of this TAB - probably to let it
1449 // do its default job.
1450 {
1451 wxNavigationKeyEvent eventNav;
1452 eventNav.SetDirection(!event.ShiftDown());
1453 eventNav.SetWindowChange(event.ControlDown());
1454 eventNav.SetEventObject(this);
1455
1456 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1457 return;
1458 }
1459 break;
1460 }
1461
1462 // no, we didn't process it
1463 event.Skip();
1464 }
1465
1466 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1467 {
1468 long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1469
1470 if ( nMsg == WM_GETDLGCODE )
1471 {
1472 // we always want the chars and the arrows: the arrows for navigation
1473 // and the chars because we want Ctrl-C to work even in a read only
1474 // control
1475 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1476
1477 if ( IsEditable() )
1478 {
1479 // we may have several different cases:
1480 // 1. normal case: both TAB and ENTER are used for dlg navigation
1481 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1482 // next control in the dialog
1483 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1484 // navigation
1485 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1486 // to the next control
1487
1488 // the multiline edit control should always get <Return> for itself
1489 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1490 lDlgCode |= DLGC_WANTMESSAGE;
1491
1492 if ( HasFlag(wxTE_PROCESS_TAB) )
1493 lDlgCode |= DLGC_WANTTAB;
1494
1495 lRc |= lDlgCode;
1496 }
1497 else // !editable
1498 {
1499 // NB: use "=", not "|=" as the base class version returns the
1500 // same flags is this state as usual (i.e. including
1501 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1502 // native Win32 apps?) but for now live with it.
1503 lRc = lDlgCode;
1504 }
1505 }
1506
1507 return lRc;
1508 }
1509
1510 // ----------------------------------------------------------------------------
1511 // text control event processing
1512 // ----------------------------------------------------------------------------
1513
1514 bool wxTextCtrl::SendUpdateEvent()
1515 {
1516 // is event reporting suspended?
1517 if ( m_suppressNextUpdate )
1518 {
1519 // do process the next one
1520 m_suppressNextUpdate = FALSE;
1521
1522 return FALSE;
1523 }
1524
1525 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1526 InitCommandEvent(event);
1527 event.SetString(GetValue());
1528
1529 return ProcessCommand(event);
1530 }
1531
1532 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1533 {
1534 switch ( param )
1535 {
1536 case EN_SETFOCUS:
1537 case EN_KILLFOCUS:
1538 {
1539 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1540 : wxEVT_SET_FOCUS,
1541 m_windowId);
1542 event.SetEventObject(this);
1543 GetEventHandler()->ProcessEvent(event);
1544 }
1545 break;
1546
1547 case EN_CHANGE:
1548 SendUpdateEvent();
1549 break;
1550
1551 case EN_MAXTEXT:
1552 // the text size limit has been hit -- try to increase it
1553 if ( !AdjustSpaceLimit() )
1554 {
1555 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1556 InitCommandEvent(event);
1557 event.SetString(GetValue());
1558 ProcessCommand(event);
1559 }
1560 break;
1561
1562 // the other edit notification messages are not processed
1563 default:
1564 return FALSE;
1565 }
1566
1567 // processed
1568 return TRUE;
1569 }
1570
1571 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1572 #if wxUSE_CTL3D
1573 WXUINT message,
1574 WXWPARAM wParam,
1575 WXLPARAM lParam
1576 #else
1577 WXUINT WXUNUSED(message),
1578 WXWPARAM WXUNUSED(wParam),
1579 WXLPARAM WXUNUSED(lParam)
1580 #endif
1581 )
1582 {
1583 #if wxUSE_CTL3D
1584 if ( m_useCtl3D )
1585 {
1586 HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1587 return (WXHBRUSH) hbrush;
1588 }
1589 #endif // wxUSE_CTL3D
1590
1591 HDC hdc = (HDC)pDC;
1592 wxColour colBack = GetBackgroundColour();
1593
1594 if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1595 colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1596
1597 ::SetBkColor(hdc, wxColourToRGB(colBack));
1598 ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1599
1600 wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1601
1602 return (WXHBRUSH)brush->GetResourceHandle();
1603 }
1604
1605 // In WIN16, need to override normal erasing because
1606 // Ctl3D doesn't use the wxWindows background colour.
1607 #ifdef __WIN16__
1608 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1609 {
1610 wxColour col(m_backgroundColour);
1611
1612 #if wxUSE_CTL3D
1613 if (m_useCtl3D)
1614 col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1615 #endif
1616
1617 RECT rect;
1618 ::GetClientRect(GetHwnd(), &rect);
1619
1620 COLORREF ref = wxColourToRGB(col);
1621 HBRUSH hBrush = ::CreateSolidBrush(ref);
1622 if ( !hBrush )
1623 wxLogLastError(wxT("CreateSolidBrush"));
1624
1625 HDC hdc = (HDC)event.GetDC()->GetHDC();
1626
1627 int mode = ::SetMapMode(hdc, MM_TEXT);
1628
1629 ::FillRect(hdc, &rect, hBrush);
1630 ::DeleteObject(hBrush);
1631 ::SetMapMode(hdc, mode);
1632
1633 }
1634 #endif // Win16
1635
1636 bool wxTextCtrl::AdjustSpaceLimit()
1637 {
1638 #ifndef __WIN16__
1639 unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1640
1641 // HACK: we try to automatically extend the limit for the amount of text
1642 // to allow (interactively) entering more than 64Kb of text under
1643 // Win9x but we shouldn't reset the text limit which was previously
1644 // set explicitly with SetMaxLength()
1645 //
1646 // we could solve this by storing the limit we set in wxTextCtrl but
1647 // to save space we prefer to simply test here the actual limit
1648 // value: we consider that SetMaxLength() can only be called for
1649 // values < 32Kb
1650 if ( limit < 0x8000 )
1651 {
1652 // we've got more text than limit set by SetMaxLength()
1653 return FALSE;
1654 }
1655
1656 unsigned int len = ::GetWindowTextLength(GetHwnd());
1657 if ( len >= limit )
1658 {
1659 limit = len + 0x8000; // 32Kb
1660
1661 #if wxUSE_RICHEDIT
1662 if ( IsRich() )
1663 {
1664 // as a nice side effect, this also allows passing limit > 64Kb
1665 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1666 }
1667 else
1668 #endif // wxUSE_RICHEDIT
1669 {
1670 if ( limit > 0xffff )
1671 {
1672 // this will set it to a platform-dependent maximum (much more
1673 // than 64Kb under NT)
1674 limit = 0;
1675 }
1676
1677 ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1678 }
1679 }
1680 #endif // !Win16
1681
1682 // we changed the limit
1683 return TRUE;
1684 }
1685
1686 bool wxTextCtrl::AcceptsFocus() const
1687 {
1688 // we don't want focus if we can't be edited unless we're a multiline
1689 // control because then it might be still nice to get focus from keyboard
1690 // to be able to scroll it without mouse
1691 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1692 }
1693
1694 wxSize wxTextCtrl::DoGetBestSize() const
1695 {
1696 int cx, cy;
1697 wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1698
1699 int wText = DEFAULT_ITEM_WIDTH;
1700
1701 int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1702 if ( m_windowStyle & wxTE_MULTILINE )
1703 {
1704 hText *= wxMax(GetNumberOfLines(), 5);
1705 }
1706 //else: for single line control everything is ok
1707
1708 return wxSize(wText, hText);
1709 }
1710
1711 // ----------------------------------------------------------------------------
1712 // standard handlers for standard edit menu events
1713 // ----------------------------------------------------------------------------
1714
1715 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1716 {
1717 Cut();
1718 }
1719
1720 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1721 {
1722 Copy();
1723 }
1724
1725 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1726 {
1727 Paste();
1728 }
1729
1730 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1731 {
1732 Undo();
1733 }
1734
1735 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1736 {
1737 Redo();
1738 }
1739
1740 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
1741 {
1742 long from, to;
1743 GetSelection(& from, & to);
1744 if (from != -1 && to != -1)
1745 Remove(from, to);
1746 }
1747
1748 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1749 {
1750 SetSelection(-1, -1);
1751 }
1752
1753 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1754 {
1755 event.Enable( CanCut() );
1756 }
1757
1758 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1759 {
1760 event.Enable( CanCopy() );
1761 }
1762
1763 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1764 {
1765 event.Enable( CanPaste() );
1766 }
1767
1768 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1769 {
1770 event.Enable( CanUndo() );
1771 }
1772
1773 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1774 {
1775 event.Enable( CanRedo() );
1776 }
1777
1778 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1779 {
1780 long from, to;
1781 GetSelection(& from, & to);
1782 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1783 }
1784
1785 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1786 {
1787 event.Enable(GetLastPosition() > 0);
1788 }
1789
1790 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1791 {
1792 #if wxUSE_RICHEDIT
1793 if (IsRich())
1794 {
1795 if (!m_privateContextMenu)
1796 {
1797 m_privateContextMenu = new wxMenu;
1798 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1799 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1800 m_privateContextMenu->AppendSeparator();
1801 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1802 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1803 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1804 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1805 m_privateContextMenu->AppendSeparator();
1806 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1807 }
1808 PopupMenu(m_privateContextMenu, event.GetPosition());
1809 return;
1810 }
1811 else
1812 #endif
1813 event.Skip();
1814 }
1815
1816 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
1817 {
1818 // be sure the caret remains invisible if the user had hidden it
1819 if ( !m_isNativeCaretShown )
1820 {
1821 ::HideCaret(GetHwnd());
1822 }
1823 }
1824
1825 // the rest of the file only deals with the rich edit controls
1826 #if wxUSE_RICHEDIT
1827
1828 // ----------------------------------------------------------------------------
1829 // EN_LINK processing
1830 // ----------------------------------------------------------------------------
1831
1832 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1833 {
1834 NMHDR *hdr = (NMHDR* )lParam;
1835 switch ( hdr->code )
1836 {
1837 case EN_MSGFILTER:
1838 {
1839 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1840 UINT msg = msgf->msg;
1841
1842 // this is a bit crazy but richedit 1.0 sends us all mouse
1843 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1844 // generate the wxWin events for this message manually
1845 //
1846 // NB: in fact, this is still not totally correct as it does
1847 // send us WM_LBUTTONUP if the selection was cleared by the
1848 // last click -- so currently we get 2 events in this case,
1849 // but as I don't see any obvious way to check for this I
1850 // leave this code in place because it's still better than
1851 // not getting left up events at all
1852 if ( msg == WM_LBUTTONUP )
1853 {
1854 WXUINT flags = msgf->wParam;
1855 int x = GET_X_LPARAM(msgf->lParam),
1856 y = GET_Y_LPARAM(msgf->lParam);
1857
1858 HandleMouseEvent(msg, x, y, flags);
1859 }
1860 }
1861
1862 // return TRUE to process the event (and FALSE to ignore it)
1863 return TRUE;
1864
1865 case EN_LINK:
1866 {
1867 const ENLINK *enlink = (ENLINK *)hdr;
1868
1869 switch ( enlink->msg )
1870 {
1871 case WM_SETCURSOR:
1872 // ok, so it is hardcoded - do we really nee to
1873 // customize it?
1874 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1875 *result = TRUE;
1876 break;
1877
1878 case WM_MOUSEMOVE:
1879 case WM_LBUTTONDOWN:
1880 case WM_LBUTTONUP:
1881 case WM_LBUTTONDBLCLK:
1882 case WM_RBUTTONDOWN:
1883 case WM_RBUTTONUP:
1884 case WM_RBUTTONDBLCLK:
1885 // send a mouse event
1886 {
1887 static const wxEventType eventsMouse[] =
1888 {
1889 wxEVT_MOTION,
1890 wxEVT_LEFT_DOWN,
1891 wxEVT_LEFT_UP,
1892 wxEVT_LEFT_DCLICK,
1893 wxEVT_RIGHT_DOWN,
1894 wxEVT_RIGHT_UP,
1895 wxEVT_RIGHT_DCLICK,
1896 };
1897
1898 // the event ids are consecutive
1899 wxMouseEvent
1900 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1901
1902 InitMouseEvent(evtMouse,
1903 GET_X_LPARAM(enlink->lParam),
1904 GET_Y_LPARAM(enlink->lParam),
1905 enlink->wParam);
1906
1907 wxTextUrlEvent event(m_windowId, evtMouse,
1908 enlink->chrg.cpMin,
1909 enlink->chrg.cpMax);
1910
1911 InitCommandEvent(event);
1912
1913 *result = ProcessCommand(event);
1914 }
1915 break;
1916 }
1917 }
1918 return TRUE;
1919 }
1920
1921 // not processed, leave it to the base class
1922 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1923 }
1924
1925 // ----------------------------------------------------------------------------
1926 // colour setting for the rich edit controls
1927 // ----------------------------------------------------------------------------
1928
1929 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1930 {
1931 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1932 {
1933 // colour didn't really change
1934 return FALSE;
1935 }
1936
1937 if ( IsRich() )
1938 {
1939 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1940 // EM_SETBKGNDCOLOR additionally
1941 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1942 }
1943
1944 return TRUE;
1945 }
1946
1947 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1948 {
1949 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1950 {
1951 // colour didn't really change
1952 return FALSE;
1953 }
1954
1955 if ( IsRich() )
1956 {
1957 // change the colour of everything
1958 CHARFORMAT cf;
1959 wxZeroMemory(cf);
1960 cf.cbSize = sizeof(cf);
1961 cf.dwMask = CFM_COLOR;
1962 cf.crTextColor = wxColourToRGB(colour);
1963 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1964 }
1965
1966 return TRUE;
1967 }
1968
1969 // ----------------------------------------------------------------------------
1970 // styling support for rich edit controls
1971 // ----------------------------------------------------------------------------
1972
1973 #if wxUSE_RICHEDIT
1974
1975 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1976 {
1977 if ( !IsRich() )
1978 {
1979 // can't do it with normal text control
1980 return FALSE;
1981 }
1982
1983 // the richedit 1.0 doesn't handle setting background colour, so don't
1984 // even try to do anything if it's the only thing we want to change
1985 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
1986 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
1987 !style.HasTabs() )
1988 {
1989 // nothing to do: return TRUE if there was really nothing to do and
1990 // FALSE if we failed to set bg colour
1991 return !style.HasBackgroundColour();
1992 }
1993
1994 // order the range if needed
1995 if ( start > end )
1996 {
1997 long tmp = start;
1998 start = end;
1999 end = tmp;
2000 }
2001
2002 // we can only change the format of the selection, so select the range we
2003 // want and restore the old selection later
2004 long startOld, endOld;
2005 GetSelection(&startOld, &endOld);
2006
2007 // but do we really have to change the selection?
2008 bool changeSel = start != startOld || end != endOld;
2009
2010 if ( changeSel )
2011 {
2012 DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
2013 }
2014
2015 // initialize CHARFORMAT struct
2016 #if wxUSE_RICHEDIT2
2017 CHARFORMAT2 cf;
2018 #else
2019 CHARFORMAT cf;
2020 #endif
2021
2022 wxZeroMemory(cf);
2023
2024 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2025 // CHARFORMAT in that case
2026 #if wxUSE_RICHEDIT2
2027 if ( m_verRichEdit == 1 )
2028 {
2029 // this is the only thing the control is going to grok
2030 cf.cbSize = sizeof(CHARFORMAT);
2031 }
2032 else
2033 #endif
2034 {
2035 // CHARFORMAT or CHARFORMAT2
2036 cf.cbSize = sizeof(cf);
2037 }
2038
2039 if ( style.HasFont() )
2040 {
2041 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2042 // but using it doesn't seem to hurt neither so leaving it for now
2043
2044 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2045 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2046
2047 // fill in data from LOGFONT but recalculate lfHeight because we need
2048 // the real height in twips and not the negative number which
2049 // wxFillLogFont() returns (this is correct in general and works with
2050 // the Windows font mapper, but not here)
2051 LOGFONT lf;
2052 wxFillLogFont(&lf, &style.GetFont());
2053 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2054 cf.bCharSet = lf.lfCharSet;
2055 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2056 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2057
2058 // also deal with underline/italic/bold attributes: note that we must
2059 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2060 // style to allow clearing it
2061 if ( lf.lfItalic )
2062 {
2063 cf.dwEffects |= CFE_ITALIC;
2064 }
2065
2066 if ( lf.lfWeight == FW_BOLD )
2067 {
2068 cf.dwEffects |= CFE_BOLD;
2069 }
2070
2071 if ( lf.lfUnderline )
2072 {
2073 cf.dwEffects |= CFE_UNDERLINE;
2074 }
2075
2076 // strikeout fonts are not supported by wxWindows
2077 }
2078
2079 if ( style.HasTextColour() )
2080 {
2081 cf.dwMask |= CFM_COLOR;
2082 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2083 }
2084
2085 #if wxUSE_RICHEDIT2
2086 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2087 {
2088 cf.dwMask |= CFM_BACKCOLOR;
2089 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2090 }
2091 #endif // wxUSE_RICHEDIT2
2092
2093 // do format the selection
2094 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2095 SCF_SELECTION, (LPARAM)&cf) != 0;
2096 if ( !ok )
2097 {
2098 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2099 }
2100
2101 // now do the paragraph formatting
2102 PARAFORMAT2 pf;
2103 wxZeroMemory(pf);
2104 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2105 // PARAFORMAT in that case
2106 #if wxUSE_RICHEDIT2
2107 if ( m_verRichEdit == 1 )
2108 {
2109 // this is the only thing the control is going to grok
2110 pf.cbSize = sizeof(PARAFORMAT);
2111 }
2112 else
2113 #endif
2114 {
2115 // PARAFORMAT or PARAFORMAT2
2116 pf.cbSize = sizeof(pf);
2117 }
2118
2119 if (style.HasAlignment())
2120 {
2121 pf.dwMask |= PFM_ALIGNMENT;
2122 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2123 pf.wAlignment = PFA_RIGHT;
2124 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2125 pf.wAlignment = PFA_CENTER;
2126 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2127 pf.wAlignment = PFA_JUSTIFY;
2128 else
2129 pf.wAlignment = PFA_LEFT;
2130 }
2131
2132 if (style.HasLeftIndent())
2133 {
2134 pf.dwMask |= PFM_STARTINDENT;
2135
2136 // Convert from 1/10 mm to TWIPS
2137 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2138
2139 // TODO: do we need to specify dxOffset?
2140 }
2141
2142 if (style.HasRightIndent())
2143 {
2144 pf.dwMask |= PFM_RIGHTINDENT;
2145
2146 // Convert from 1/10 mm to TWIPS
2147 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2148 }
2149
2150 if (style.HasTabs())
2151 {
2152 pf.dwMask |= PFM_TABSTOPS;
2153
2154 const wxArrayInt& tabs = style.GetTabs();
2155
2156 pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2157 size_t i;
2158 for (i = 0; i < (size_t) pf.cTabCount; i++)
2159 {
2160 // Convert from 1/10 mm to TWIPS
2161 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2162 }
2163 }
2164
2165 if (pf.dwMask != 0)
2166 {
2167 // do format the selection
2168 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2169 0, (LPARAM) &pf) != 0;
2170 if ( !ok )
2171 {
2172 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2173 }
2174 }
2175
2176 if ( changeSel )
2177 {
2178 // restore the original selection
2179 DoSetSelection(startOld, endOld, FALSE);
2180 }
2181
2182 return ok;
2183 }
2184
2185 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2186 {
2187 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2188 return FALSE;
2189
2190 // we have to do this or the style wouldn't apply for the text typed by the
2191 // user
2192 long posLast = GetLastPosition();
2193 SetStyle(posLast, posLast, m_defaultStyle);
2194
2195 return TRUE;
2196 }
2197
2198 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2199 {
2200 if ( !IsRich() )
2201 {
2202 // can't do it with normal text control
2203 return FALSE;
2204 }
2205
2206 // initialize CHARFORMAT struct
2207 #if wxUSE_RICHEDIT2
2208 CHARFORMAT2 cf;
2209 #else
2210 CHARFORMAT cf;
2211 #endif
2212
2213 wxZeroMemory(cf);
2214
2215 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2216 // CHARFORMAT in that case
2217 #if wxUSE_RICHEDIT2
2218 if ( m_verRichEdit == 1 )
2219 {
2220 // this is the only thing the control is going to grok
2221 cf.cbSize = sizeof(CHARFORMAT);
2222 }
2223 else
2224 #endif
2225 {
2226 // CHARFORMAT or CHARFORMAT2
2227 cf.cbSize = sizeof(cf);
2228 }
2229 // we can only change the format of the selection, so select the range we
2230 // want and restore the old selection later
2231 long startOld, endOld;
2232 GetSelection(&startOld, &endOld);
2233
2234 // but do we really have to change the selection?
2235 bool changeSel = position != startOld || position != endOld;
2236
2237 if ( changeSel )
2238 {
2239 DoSetSelection(position, position, FALSE /* don't scroll caret into view */);
2240 }
2241
2242 // get the selection formatting
2243 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2244 SCF_SELECTION, (LPARAM)&cf) ;
2245
2246 LOGFONT lf;
2247 lf.lfHeight = cf.yHeight;
2248 lf.lfWidth = 0;
2249 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2250 lf.lfClipPrecision = 0;
2251 lf.lfEscapement = 0;
2252 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2253 if (cf.dwEffects & CFE_ITALIC)
2254 lf.lfItalic = TRUE;
2255 lf.lfOrientation = 0;
2256 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2257 lf.lfQuality = 0;
2258 if (cf.dwEffects & CFE_STRIKEOUT)
2259 lf.lfStrikeOut = TRUE;
2260 if (cf.dwEffects & CFE_UNDERLINE)
2261 lf.lfUnderline = TRUE;
2262 if (cf.dwEffects & CFE_BOLD)
2263 lf.lfWeight = FW_BOLD;
2264
2265 wxFont font = wxCreateFontFromLogFont(& lf);
2266 if (font.Ok())
2267 {
2268 style.SetFont(font);
2269 }
2270 style.SetTextColour(wxColour(cf.crTextColor));
2271
2272 #if wxUSE_RICHEDIT2
2273 if ( m_verRichEdit != 1 )
2274 {
2275 // cf.dwMask |= CFM_BACKCOLOR;
2276 style.SetBackgroundColour(wxColour(cf.crBackColor));
2277 }
2278 #endif // wxUSE_RICHEDIT2
2279
2280 // now get the paragraph formatting
2281 PARAFORMAT2 pf;
2282 wxZeroMemory(pf);
2283 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2284 // PARAFORMAT in that case
2285 #if wxUSE_RICHEDIT2
2286 if ( m_verRichEdit == 1 )
2287 {
2288 // this is the only thing the control is going to grok
2289 pf.cbSize = sizeof(PARAFORMAT);
2290 }
2291 else
2292 #endif
2293 {
2294 // PARAFORMAT or PARAFORMAT2
2295 pf.cbSize = sizeof(pf);
2296 }
2297
2298 // do format the selection
2299 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2300
2301 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0) );
2302 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2303
2304 if (pf.wAlignment == PFA_CENTER)
2305 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2306 else if (pf.wAlignment == PFA_RIGHT)
2307 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2308 else if (pf.wAlignment == PFA_JUSTIFY)
2309 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2310 else
2311 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2312
2313 wxArrayInt tabStops;
2314 size_t i;
2315 for (i = 0; i < (size_t) pf.cTabCount; i++)
2316 {
2317 tabStops[i] = (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) ;
2318 }
2319
2320 if ( changeSel )
2321 {
2322 // restore the original selection
2323 DoSetSelection(startOld, endOld, FALSE);
2324 }
2325
2326 return TRUE;
2327 }
2328
2329 #endif
2330
2331 // ----------------------------------------------------------------------------
2332 // wxRichEditModule
2333 // ----------------------------------------------------------------------------
2334
2335 bool wxRichEditModule::OnInit()
2336 {
2337 // don't do anything - we will load it when needed
2338 return TRUE;
2339 }
2340
2341 void wxRichEditModule::OnExit()
2342 {
2343 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2344 {
2345 if ( ms_hRichEdit[i] )
2346 {
2347 ::FreeLibrary(ms_hRichEdit[i]);
2348 ms_hRichEdit[i] = NULL;
2349 }
2350 }
2351 }
2352
2353 /* static */
2354 bool wxRichEditModule::Load(int version)
2355 {
2356 // we don't support loading richedit 3.0 as I don't know how to distinguish
2357 // it from 2.0 anyhow
2358 wxCHECK_MSG( version == 1 || version == 2, FALSE,
2359 _T("incorrect richedit control version requested") );
2360
2361 // make it the index in the array
2362 version--;
2363
2364 if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2365 {
2366 // we had already tried to load it and failed
2367 return FALSE;
2368 }
2369
2370 if ( ms_hRichEdit[version] )
2371 {
2372 // we've already got this one
2373 return TRUE;
2374 }
2375
2376 wxString dllname = version ? _T("riched20") : _T("riched32");
2377 dllname += _T(".dll");
2378
2379 ms_hRichEdit[version] = ::LoadLibrary(dllname);
2380
2381 if ( !ms_hRichEdit[version] )
2382 {
2383 wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2384
2385 ms_hRichEdit[version] = (HINSTANCE)-1;
2386
2387 return FALSE;
2388 }
2389
2390 return TRUE;
2391 }
2392
2393 #endif // wxUSE_RICHEDIT
2394
2395 #endif // wxUSE_TEXTCTRL
wxWidgets (Impactor)