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