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[wxWidgets.git] / src / msw / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/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 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #if wxUSE_TEXTCTRL && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
28
29 #ifndef WX_PRECOMP
30 #include "wx/msw/missing.h"
31 #include "wx/textctrl.h"
32 #include "wx/settings.h"
33 #include "wx/brush.h"
34 #include "wx/utils.h"
35 #include "wx/intl.h"
36 #include "wx/log.h"
37 #include "wx/app.h"
38 #include "wx/menu.h"
39 #include "wx/math.h"
40 #include "wx/module.h"
41 #endif
42
43 #include "wx/sysopt.h"
44
45 #if wxUSE_CLIPBOARD
46 #include "wx/clipbrd.h"
47 #endif
48
49 #include "wx/textfile.h"
50
51 #include <windowsx.h>
52
53 #include "wx/msw/private.h"
54 #include "wx/msw/winundef.h"
55
56 #include <string.h>
57 #include <stdlib.h>
58
59 #ifndef __WXWINCE__
60 #include <sys/types.h>
61 #endif
62
63 #if wxUSE_RICHEDIT
64
65 #if wxUSE_INKEDIT
66 #include "wx/dynlib.h"
67 #endif
68
69 // old mingw32 has richedit stuff directly in windows.h and doesn't have
70 // richedit.h at all
71 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
72 #include <richedit.h>
73 #endif
74
75 #endif // wxUSE_RICHEDIT
76
77 // ----------------------------------------------------------------------------
78 // private classes
79 // ----------------------------------------------------------------------------
80
81 #if wxUSE_RICHEDIT
82
83 // this module initializes RichEdit DLL(s) if needed
84 class wxRichEditModule : public wxModule
85 {
86 public:
87 enum Version
88 {
89 Version_1, // riched32.dll
90 Version_2or3, // both use riched20.dll
91 Version_41, // msftedit.dll (XP SP1 and Windows 2003)
92 Version_Max
93 };
94
95 virtual bool OnInit();
96 virtual void OnExit();
97
98 // load the richedit DLL for the specified version of rich edit
99 static bool Load(Version version);
100
101 #if wxUSE_INKEDIT
102 // load the InkEdit library
103 static bool LoadInkEdit();
104 #endif
105
106 private:
107 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
108 static HINSTANCE ms_hRichEdit[Version_Max];
109
110 #if wxUSE_INKEDIT
111 static wxDynamicLibrary ms_inkEditLib;
112 static bool ms_inkEditLibLoadAttemped;
113 #endif
114
115 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
116 };
117
118 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
119
120 #if wxUSE_INKEDIT
121 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
122 bool wxRichEditModule::ms_inkEditLibLoadAttemped = false;
123 #endif
124
125 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
126
127 #endif // wxUSE_RICHEDIT
128
129 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
130 // necessary) and to reset it back to -1 afterwards
131 class UpdatesCountFilter
132 {
133 public:
134 UpdatesCountFilter(int& count)
135 : m_count(count)
136 {
137 wxASSERT_MSG( m_count == -1 || m_count == -2,
138 _T("wrong initial m_updatesCount value") );
139
140 if (m_count != -2)
141 m_count = 0;
142 //else: we don't want to count how many update events we get as we're going
143 // to ignore all of them
144 }
145
146 ~UpdatesCountFilter()
147 {
148 m_count = -1;
149 }
150
151 // return true if an event has been received
152 bool GotUpdate() const
153 {
154 return m_count == 1;
155 }
156
157 private:
158 int& m_count;
159
160 DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
161 };
162
163 // ----------------------------------------------------------------------------
164 // event tables and other macros
165 // ----------------------------------------------------------------------------
166
167 #if wxUSE_EXTENDED_RTTI
168 WX_DEFINE_FLAGS( wxTextCtrlStyle )
169
170 wxBEGIN_FLAGS( wxTextCtrlStyle )
171 // new style border flags, we put them first to
172 // use them for streaming out
173 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
174 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
175 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
176 wxFLAGS_MEMBER(wxBORDER_RAISED)
177 wxFLAGS_MEMBER(wxBORDER_STATIC)
178 wxFLAGS_MEMBER(wxBORDER_NONE)
179
180 // old style border flags
181 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
182 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
183 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
184 wxFLAGS_MEMBER(wxRAISED_BORDER)
185 wxFLAGS_MEMBER(wxSTATIC_BORDER)
186 wxFLAGS_MEMBER(wxBORDER)
187
188 // standard window styles
189 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
190 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
191 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
192 wxFLAGS_MEMBER(wxWANTS_CHARS)
193 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
194 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
195 wxFLAGS_MEMBER(wxVSCROLL)
196 wxFLAGS_MEMBER(wxHSCROLL)
197
198 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
199 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
200 wxFLAGS_MEMBER(wxTE_MULTILINE)
201 wxFLAGS_MEMBER(wxTE_PASSWORD)
202 wxFLAGS_MEMBER(wxTE_READONLY)
203 wxFLAGS_MEMBER(wxHSCROLL)
204 wxFLAGS_MEMBER(wxTE_RICH)
205 wxFLAGS_MEMBER(wxTE_RICH2)
206 wxFLAGS_MEMBER(wxTE_AUTO_URL)
207 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
208 wxFLAGS_MEMBER(wxTE_LEFT)
209 wxFLAGS_MEMBER(wxTE_CENTRE)
210 wxFLAGS_MEMBER(wxTE_RIGHT)
211 wxFLAGS_MEMBER(wxTE_DONTWRAP)
212 wxFLAGS_MEMBER(wxTE_CHARWRAP)
213 wxFLAGS_MEMBER(wxTE_WORDWRAP)
214
215 wxEND_FLAGS( wxTextCtrlStyle )
216
217 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
218
219 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
220 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
221 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
222
223 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
224 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
225 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
226 wxEND_PROPERTIES_TABLE()
227
228 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
229 wxEND_HANDLERS_TABLE()
230
231 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
232 #else
233 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
234 #endif
235
236
237 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
238 EVT_CHAR(wxTextCtrl::OnChar)
239 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
240
241 #if wxUSE_RICHEDIT
242 EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
243 #endif
244
245 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
246 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
247 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
248 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
249 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
250 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
251 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
252
253 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
254 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
255 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
256 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
257 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
258 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
259 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
260
261 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
262 END_EVENT_TABLE()
263
264 // ----------------------------------------------------------------------------
265 // function prototypes
266 // ----------------------------------------------------------------------------
267
268 LRESULT APIENTRY _EXPORT wxTextCtrlWndProc(HWND hWnd,
269 UINT message,
270 WPARAM wParam,
271 LPARAM lParam);
272
273 // ---------------------------------------------------------------------------
274 // global vars
275 // ---------------------------------------------------------------------------
276
277 // the pointer to standard text control wnd proc
278 static WNDPROC gs_wndprocEdit = (WNDPROC)NULL;
279
280 // ============================================================================
281 // implementation
282 // ============================================================================
283
284 // ----------------------------------------------------------------------------
285 // wnd proc for subclassed edit control
286 // ----------------------------------------------------------------------------
287
288 LRESULT APIENTRY _EXPORT wxTextCtrlWndProc(HWND hWnd,
289 UINT message,
290 WPARAM wParam,
291 LPARAM lParam)
292 {
293 switch ( message )
294 {
295 case WM_CUT:
296 case WM_COPY:
297 case WM_PASTE:
298 {
299 wxWindow *win = wxFindWinFromHandle((WXHWND)hWnd);
300 if( win->HandleClipboardEvent( message ) )
301 return 0;
302 break;
303 }
304 }
305 return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam);
306 }
307
308 // ----------------------------------------------------------------------------
309 // creation
310 // ----------------------------------------------------------------------------
311
312 void wxTextCtrl::Init()
313 {
314 #if wxUSE_RICHEDIT
315 m_verRichEdit = 0;
316 #endif // wxUSE_RICHEDIT
317
318 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
319 m_isInkEdit = 0;
320 #endif
321
322 m_privateContextMenu = NULL;
323 m_updatesCount = -1;
324 m_isNativeCaretShown = true;
325 }
326
327 wxTextCtrl::~wxTextCtrl()
328 {
329 delete m_privateContextMenu;
330 }
331
332 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
333 const wxString& value,
334 const wxPoint& pos,
335 const wxSize& size,
336 long style,
337 const wxValidator& validator,
338 const wxString& name)
339 {
340 #ifdef __WXWINCE__
341 if ((style & wxBORDER_MASK) == 0)
342 style |= wxBORDER_SIMPLE;
343 #endif
344
345 // base initialization
346 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
347 return false;
348
349 // translate wxWin style flags to MSW ones
350 WXDWORD msStyle = MSWGetCreateWindowFlags();
351
352 // do create the control - either an EDIT or RICHEDIT
353 wxString windowClass = wxT("EDIT");
354
355 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
356 // A control that capitalizes the first letter
357 if (style & wxTE_CAPITALIZE)
358 windowClass = wxT("CAPEDIT");
359 #endif
360
361 #if wxUSE_RICHEDIT
362 if ( m_windowStyle & wxTE_AUTO_URL )
363 {
364 // automatic URL detection only works in RichEdit 2.0+
365 m_windowStyle |= wxTE_RICH2;
366 }
367
368 if ( m_windowStyle & wxTE_RICH2 )
369 {
370 // using richedit 2.0 implies using wxTE_RICH
371 m_windowStyle |= wxTE_RICH;
372 }
373
374 // we need to load the richedit DLL before creating the rich edit control
375 if ( m_windowStyle & wxTE_RICH )
376 {
377 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
378 // each other but not with version 1.0, so we have separate flags for
379 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
380 // EDIT control), 1 for version 1.0 or 2 for any higher version)
381 //
382 // notice that 1.0 has no Unicode support at all so in Unicode build we
383 // must use another version
384
385 #if wxUSE_UNICODE
386 m_verRichEdit = 2;
387 #else // !wxUSE_UNICODE
388 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
389 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
390
391 #if wxUSE_INKEDIT
392 // First test if we can load an ink edit control. Normally, all edit
393 // controls will be made ink edit controls if a tablet environment is
394 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
395 // However, an application can veto ink edit controls by either specifying
396 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
397 //
398 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
399 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
400 {
401 if (wxRichEditModule::LoadInkEdit())
402 {
403 windowClass = INKEDIT_CLASS;
404
405 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
406 m_isInkEdit = 1;
407 #endif
408
409 // Fake rich text version for other calls
410 m_verRichEdit = 2;
411 }
412 }
413 #endif
414
415 if (!IsInkEdit())
416 {
417 if ( m_verRichEdit == 2 )
418 {
419 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
420 {
421 // yes, class name for version 4.1 really is 5.0
422 windowClass = _T("RICHEDIT50W");
423 }
424 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
425 {
426 windowClass = _T("RichEdit20")
427 #if wxUSE_UNICODE
428 _T("W");
429 #else // ANSI
430 _T("A");
431 #endif // Unicode/ANSI
432 }
433 else // failed to load msftedit.dll and riched20.dll
434 {
435 m_verRichEdit = 1;
436 }
437 }
438
439 if ( m_verRichEdit == 1 )
440 {
441 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
442 {
443 windowClass = _T("RICHEDIT");
444 }
445 else // failed to load any richedit control DLL
446 {
447 // only give the error msg once if the DLL can't be loaded
448 static bool s_errorGiven = false; // MT ok as only used by GUI
449
450 if ( !s_errorGiven )
451 {
452 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
453
454 s_errorGiven = true;
455 }
456
457 m_verRichEdit = 0;
458 }
459 }
460 } // !useInkEdit
461 }
462 #endif // wxUSE_RICHEDIT
463
464 // we need to turn '\n's into "\r\n"s for the multiline controls
465 wxString valueWin;
466 if ( m_windowStyle & wxTE_MULTILINE )
467 {
468 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
469 }
470 else // single line
471 {
472 valueWin = value;
473 }
474
475 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
476 return false;
477
478 #if wxUSE_RICHEDIT
479 if (IsRich())
480 {
481 #if wxUSE_INKEDIT
482 if (IsInkEdit())
483 {
484 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
485 // converted to text.
486 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
487
488 // Make sure the mouse can be used for input
489 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
490 }
491 #endif
492
493 // enable the events we're interested in: we want to get EN_CHANGE as
494 // for the normal controls
495 LPARAM mask = ENM_CHANGE;
496
497 if (GetRichVersion() == 1 && !IsInkEdit())
498 {
499 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
500 // explained in its handler
501 mask |= ENM_MOUSEEVENTS;
502
503 // we also need to force the appearance of the vertical scrollbar
504 // initially as otherwise the control doesn't refresh correctly
505 // after resize: but once the vertical scrollbar had been shown
506 // (even if it's subsequently hidden) it does
507 //
508 // this is clearly a bug and for now it has been only noticed under
509 // Windows XP, so if we're sure it works correctly under other
510 // systems we could do this only for XP
511 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
512 SetSize(size);
513 }
514 else if ( m_windowStyle & wxTE_AUTO_URL )
515 {
516 mask |= ENM_LINK;
517
518 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
519 }
520
521 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
522 }
523 #endif // wxUSE_RICHEDIT
524
525 gs_wndprocEdit = wxSetWindowProc((HWND)GetHwnd(),
526 wxTextCtrlWndProc);
527
528 return true;
529 }
530
531 // Make sure the window style (etc.) reflects the HWND style (roughly)
532 void wxTextCtrl::AdoptAttributesFromHWND()
533 {
534 wxWindow::AdoptAttributesFromHWND();
535
536 HWND hWnd = GetHwnd();
537 long style = ::GetWindowLong(hWnd, GWL_STYLE);
538
539 // retrieve the style to see whether this is an edit or richedit ctrl
540 #if wxUSE_RICHEDIT
541 wxString classname = wxGetWindowClass(GetHWND());
542
543 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
544 {
545 m_verRichEdit = 0;
546 }
547 else // rich edit?
548 {
549 wxChar c;
550 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
551 {
552 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
553
554 m_verRichEdit = 0;
555 }
556 }
557 #endif // wxUSE_RICHEDIT
558
559 if (style & ES_MULTILINE)
560 m_windowStyle |= wxTE_MULTILINE;
561 if (style & ES_PASSWORD)
562 m_windowStyle |= wxTE_PASSWORD;
563 if (style & ES_READONLY)
564 m_windowStyle |= wxTE_READONLY;
565 if (style & ES_WANTRETURN)
566 m_windowStyle |= wxTE_PROCESS_ENTER;
567 if (style & ES_CENTER)
568 m_windowStyle |= wxTE_CENTRE;
569 if (style & ES_RIGHT)
570 m_windowStyle |= wxTE_RIGHT;
571 }
572
573 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
574 {
575 long msStyle = wxControl::MSWGetStyle(style, exstyle);
576
577 // styles which we alaways add by default
578 if ( style & wxTE_MULTILINE )
579 {
580 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
581 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
582
583 msStyle |= ES_MULTILINE | ES_WANTRETURN;
584 if ( !(style & wxTE_NO_VSCROLL) )
585 {
586 // always adjust the vertical scrollbar automatically if we have it
587 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
588
589 #if wxUSE_RICHEDIT
590 // we have to use this style for the rich edit controls because
591 // without it the vertical scrollbar never appears at all in
592 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
593 if ( style & wxTE_RICH2 )
594 {
595 msStyle |= ES_DISABLENOSCROLL;
596 }
597 #endif // wxUSE_RICHEDIT
598 }
599
600 style |= wxTE_PROCESS_ENTER;
601 }
602 else // !multiline
603 {
604 // there is really no reason to not have this style for single line
605 // text controls
606 msStyle |= ES_AUTOHSCROLL;
607 }
608
609 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
610 // scrollbar, there is no wrapping -- which makes sense
611 if ( style & wxTE_DONTWRAP )
612 {
613 // automatically scroll the control horizontally as necessary
614 //
615 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
616 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
617 // it doesn't seem to do any harm for plain edit controls, add it
618 // always
619 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
620 }
621
622 if ( style & wxTE_READONLY )
623 msStyle |= ES_READONLY;
624
625 if ( style & wxTE_PASSWORD )
626 msStyle |= ES_PASSWORD;
627
628 if ( style & wxTE_NOHIDESEL )
629 msStyle |= ES_NOHIDESEL;
630
631 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
632 if ( style & wxTE_CENTRE )
633 msStyle |= ES_CENTER;
634 else if ( style & wxTE_RIGHT )
635 msStyle |= ES_RIGHT;
636 else
637 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
638
639 return msStyle;
640 }
641
642 void wxTextCtrl::SetWindowStyleFlag(long style)
643 {
644 #if wxUSE_RICHEDIT
645 // we have to deal with some styles separately because they can't be
646 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
647 // using richedit-specific EM_SETOPTIONS
648 if ( IsRich() &&
649 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
650 {
651 bool set = (style & wxTE_NOHIDESEL) != 0;
652
653 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
654 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
655 }
656 #endif // wxUSE_RICHEDIT
657
658 wxControl::SetWindowStyleFlag(style);
659 }
660
661 // ----------------------------------------------------------------------------
662 // set/get the controls text
663 // ----------------------------------------------------------------------------
664
665 wxString wxTextCtrl::GetValue() const
666 {
667 // range 0..-1 is special for GetRange() and means to retrieve all text
668 return GetRange(0, -1);
669 }
670
671 wxString wxTextCtrl::GetRange(long from, long to) const
672 {
673 wxString str;
674
675 if ( from >= to && to != -1 )
676 {
677 // nothing to retrieve
678 return str;
679 }
680
681 #if wxUSE_RICHEDIT
682 if ( IsRich() )
683 {
684 int len = GetWindowTextLength(GetHwnd());
685 if ( len > from )
686 {
687 if ( to == -1 )
688 to = len;
689
690 #if !wxUSE_UNICODE
691 // we must use EM_STREAMOUT if we don't want to lose all characters
692 // not representable in the current character set (EM_GETTEXTRANGE
693 // simply replaces them with question marks...)
694 if ( GetRichVersion() > 1 )
695 {
696 // we must have some encoding, otherwise any 8bit chars in the
697 // control are simply *lost* (replaced by '?')
698 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
699
700 wxFont font = m_defaultStyle.GetFont();
701 if ( !font.Ok() )
702 font = GetFont();
703
704 if ( font.Ok() )
705 {
706 encoding = font.GetEncoding();
707 }
708
709 if ( encoding == wxFONTENCODING_SYSTEM )
710 {
711 encoding = wxLocale::GetSystemEncoding();
712 }
713
714 if ( encoding == wxFONTENCODING_SYSTEM )
715 {
716 encoding = wxFONTENCODING_ISO8859_1;
717 }
718
719 str = StreamOut(encoding);
720
721 if ( !str.empty() )
722 {
723 // we have to manually extract the required part, luckily
724 // this is easy in this case as EOL characters in str are
725 // just LFs because we remove CRs in wxRichEditStreamOut
726 str = str.Mid(from, to - from);
727 }
728 }
729
730 // StreamOut() wasn't used or failed, try to do it in normal way
731 if ( str.empty() )
732 #endif // !wxUSE_UNICODE
733 {
734 // alloc one extra WORD as needed by the control
735 wxStringBuffer tmp(str, ++len);
736 wxChar *p = tmp;
737
738 TEXTRANGE textRange;
739 textRange.chrg.cpMin = from;
740 textRange.chrg.cpMax = to;
741 textRange.lpstrText = p;
742
743 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
744 0, (LPARAM)&textRange);
745
746 if ( m_verRichEdit > 1 )
747 {
748 // RichEdit 2.0 uses just CR ('\r') for the
749 // newlines which is neither Unix nor Windows
750 // style - convert it to something reasonable
751 for ( ; *p; p++ )
752 {
753 if ( *p == _T('\r') )
754 *p = _T('\n');
755 }
756 }
757 }
758
759 if ( m_verRichEdit == 1 )
760 {
761 // convert to the canonical form - see comment below
762 str = wxTextFile::Translate(str, wxTextFileType_Unix);
763 }
764 }
765 //else: no text at all, leave the string empty
766 }
767 else
768 #endif // wxUSE_RICHEDIT
769 {
770 // retrieve all text
771 str = wxGetWindowText(GetHWND());
772
773 // need only a range?
774 if ( from < to )
775 {
776 str = str.Mid(from, to - from);
777 }
778
779 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
780 // canonical one (same one as above) for consistency with the other kinds
781 // of controls and, more importantly, with the other ports
782 str = wxTextFile::Translate(str, wxTextFileType_Unix);
783 }
784
785 return str;
786 }
787
788 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
789 {
790 // if the text is long enough, it's faster to just set it instead of first
791 // comparing it with the old one (chances are that it will be different
792 // anyhow, this comparison is there to avoid flicker for small single-line
793 // edit controls mostly)
794 if ( (value.length() > 0x400) || (value != GetValue()) )
795 {
796 DoWriteText(value, flags);
797
798 // mark the control as being not dirty - we changed its text, not the
799 // user
800 DiscardEdits();
801
802 // for compatibility, don't move the cursor when doing SetValue()
803 SetInsertionPoint(0);
804 }
805 else // same text
806 {
807 // still reset the modified flag even if the value didn't really change
808 // because now it comes from the program and not the user (and do it
809 // before generating the event so that the event handler could get the
810 // expected value from IsModified())
811 DiscardEdits();
812
813 // still send an event for consistency
814 if (flags & SetValue_SendEvent)
815 SendUpdateEvent();
816 }
817 }
818
819 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
820
821 // TODO: using memcpy() would improve performance a lot for big amounts of text
822
823 DWORD CALLBACK
824 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
825 {
826 *pcb = 0;
827
828 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
829
830 wchar_t *wbuf = (wchar_t *)buf;
831 const wchar_t *wpc = *ppws;
832 while ( cb && *wpc )
833 {
834 *wbuf++ = *wpc++;
835
836 cb -= sizeof(wchar_t);
837 (*pcb) += sizeof(wchar_t);
838 }
839
840 *ppws = wpc;
841
842 return 0;
843 }
844
845 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
846 struct wxStreamOutData
847 {
848 wchar_t *wpc;
849 size_t len;
850 };
851
852 DWORD CALLBACK
853 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
854 {
855 *pcb = 0;
856
857 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
858
859 const wchar_t *wbuf = (const wchar_t *)buf;
860 wchar_t *wpc = data->wpc;
861 while ( cb )
862 {
863 wchar_t wch = *wbuf++;
864
865 // turn "\r\n" into "\n" on the fly
866 if ( wch != L'\r' )
867 *wpc++ = wch;
868 else
869 data->len--;
870
871 cb -= sizeof(wchar_t);
872 (*pcb) += sizeof(wchar_t);
873 }
874
875 data->wpc = wpc;
876
877 return 0;
878 }
879
880
881 #if wxUSE_UNICODE_MSLU
882 #define UNUSED_IF_MSLU(param)
883 #else
884 #define UNUSED_IF_MSLU(param) param
885 #endif
886
887 bool
888 wxTextCtrl::StreamIn(const wxString& value,
889 wxFontEncoding UNUSED_IF_MSLU(encoding),
890 bool selectionOnly)
891 {
892 #if wxUSE_UNICODE_MSLU
893 const wchar_t *wpc = value.c_str();
894 #else // !wxUSE_UNICODE_MSLU
895 wxCSConv conv(encoding);
896
897 const size_t len = conv.MB2WC(NULL, value, value.length());
898
899 #if wxUSE_WCHAR_T
900 wxWCharBuffer wchBuf(len);
901 wchar_t *wpc = wchBuf.data();
902 #else
903 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
904 wchar_t *wpc = wchBuf;
905 #endif
906
907 conv.MB2WC(wpc, value, value.length());
908 #endif // wxUSE_UNICODE_MSLU
909
910 // finally, stream it in the control
911 EDITSTREAM eds;
912 wxZeroMemory(eds);
913 eds.dwCookie = (DWORD)&wpc;
914 // the cast below is needed for broken (very) old mingw32 headers
915 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
916
917 // same problem as in DoWriteText(): we can get multiple events here
918 UpdatesCountFilter ucf(m_updatesCount);
919
920 ::SendMessage(GetHwnd(), EM_STREAMIN,
921 SF_TEXT |
922 SF_UNICODE |
923 (selectionOnly ? SFF_SELECTION : 0),
924 (LPARAM)&eds);
925
926 // It's okay for EN_UPDATE to not be sent if the selection is empty and
927 // the text is empty, otherwise warn the programmer about it.
928 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
929 _T("EM_STREAMIN didn't send EN_UPDATE?") );
930
931 if ( eds.dwError )
932 {
933 wxLogLastError(_T("EM_STREAMIN"));
934 }
935
936 #if !wxUSE_WCHAR_T
937 free(wchBuf);
938 #endif // !wxUSE_WCHAR_T
939
940 return true;
941 }
942
943 #if !wxUSE_UNICODE_MSLU
944
945 wxString
946 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
947 {
948 wxString out;
949
950 const int len = GetWindowTextLength(GetHwnd());
951
952 #if wxUSE_WCHAR_T
953 wxWCharBuffer wchBuf(len);
954 wchar_t *wpc = wchBuf.data();
955 #else
956 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
957 wchar_t *wpc = wchBuf;
958 #endif
959
960 wxStreamOutData data;
961 data.wpc = wpc;
962 data.len = len;
963
964 EDITSTREAM eds;
965 wxZeroMemory(eds);
966 eds.dwCookie = (DWORD)&data;
967 eds.pfnCallback = wxRichEditStreamOut;
968
969 ::SendMessage
970 (
971 GetHwnd(),
972 EM_STREAMOUT,
973 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
974 (LPARAM)&eds
975 );
976
977 if ( eds.dwError )
978 {
979 wxLogLastError(_T("EM_STREAMOUT"));
980 }
981 else // streamed out ok
982 {
983 // NUL-terminate the string because its length could have been
984 // decreased by wxRichEditStreamOut
985 *(wchBuf.data() + data.len) = L'\0';
986
987 // now convert to the given encoding (this is a possibly lossful
988 // conversion but what else can we do)
989 wxCSConv conv(encoding);
990 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
991 if ( lenNeeded++ )
992 {
993 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
994 }
995 }
996
997 #if !wxUSE_WCHAR_T
998 free(wchBuf);
999 #endif // !wxUSE_WCHAR_T
1000
1001 return out;
1002 }
1003
1004 #endif // !wxUSE_UNICODE_MSLU
1005
1006 #endif // wxUSE_RICHEDIT
1007
1008 void wxTextCtrl::WriteText(const wxString& value)
1009 {
1010 DoWriteText(value);
1011 }
1012
1013 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1014 {
1015 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1016 wxString valueDos;
1017 if ( m_windowStyle & wxTE_MULTILINE )
1018 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1019 else
1020 valueDos = value;
1021
1022 #if wxUSE_RICHEDIT
1023 // there are several complications with the rich edit controls here
1024 bool done = false;
1025 if ( IsRich() )
1026 {
1027 // first, ensure that the new text will be in the default style
1028 if ( !m_defaultStyle.IsDefault() )
1029 {
1030 long start, end;
1031 GetSelection(&start, &end);
1032 SetStyle(start, end, m_defaultStyle);
1033 }
1034
1035 #if wxUSE_UNICODE_MSLU
1036 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1037 // but EM_STREAMIN works
1038 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1039 {
1040 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1041 }
1042 #endif // wxUSE_UNICODE_MSLU
1043
1044 #if !wxUSE_UNICODE
1045 // next check if the text we're inserting must be shown in a non
1046 // default charset -- this only works for RichEdit > 1.0
1047 if ( GetRichVersion() > 1 )
1048 {
1049 wxFont font = m_defaultStyle.GetFont();
1050 if ( !font.Ok() )
1051 font = GetFont();
1052
1053 if ( font.Ok() )
1054 {
1055 wxFontEncoding encoding = font.GetEncoding();
1056 if ( encoding != wxFONTENCODING_SYSTEM )
1057 {
1058 // we have to use EM_STREAMIN to force richedit control 2.0+
1059 // to show any text in the non default charset -- otherwise
1060 // it thinks it knows better than we do and always shows it
1061 // in the default one
1062 done = StreamIn(valueDos, encoding, selectionOnly);
1063 }
1064 }
1065 }
1066 #endif // !wxUSE_UNICODE
1067 }
1068
1069 if ( !done )
1070 #endif // wxUSE_RICHEDIT
1071 {
1072 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1073 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1074 // -- undetermined -- conditions with rich edit) and sometimes we don't
1075 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1076 // we generate exactly one of them by ignoring all but the first one in
1077 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1078 // notifications from Windows
1079 if ( !(flags & SetValue_SendEvent) )
1080 m_updatesCount = -2; // suppress any update event
1081
1082 UpdatesCountFilter ucf(m_updatesCount);
1083
1084 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1085 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1086 selectionOnly ? 1 : 0, (LPARAM)valueDos.c_str());
1087
1088 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1089 {
1090 SendUpdateEvent();
1091 }
1092 }
1093 }
1094
1095 void wxTextCtrl::AppendText(const wxString& text)
1096 {
1097 SetInsertionPointEnd();
1098
1099 WriteText(text);
1100
1101 #if wxUSE_RICHEDIT
1102 // don't do this if we're frozen, saves some time
1103 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1104 {
1105 // setting the caret to the end and showing it simply doesn't work for
1106 // RichEdit 2.0 -- force it to still do what we want
1107 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1108 }
1109 #endif // wxUSE_RICHEDIT
1110 }
1111
1112 void wxTextCtrl::Clear()
1113 {
1114 ::SetWindowText(GetHwnd(), wxEmptyString);
1115
1116 #if wxUSE_RICHEDIT
1117 if ( !IsRich() )
1118 #endif // wxUSE_RICHEDIT
1119 {
1120 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1121 // but the normal ones don't -- make Clear() behaviour consistent by
1122 // always sending this event
1123
1124 // Windows already sends an update event for single-line
1125 // controls.
1126 if ( m_windowStyle & wxTE_MULTILINE )
1127 SendUpdateEvent();
1128 }
1129 }
1130
1131 #ifdef __WIN32__
1132
1133 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1134 {
1135 SetFocus();
1136
1137 size_t lenOld = GetValue().length();
1138
1139 wxUint32 code = event.GetRawKeyCode();
1140 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1141 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1142
1143 // assume that any alphanumeric key changes the total number of characters
1144 // in the control - this should work in 99% of cases
1145 return GetValue().length() != lenOld;
1146 }
1147
1148 #endif // __WIN32__
1149
1150 // ----------------------------------------------------------------------------
1151 // Clipboard operations
1152 // ----------------------------------------------------------------------------
1153
1154 void wxTextCtrl::Copy()
1155 {
1156 if (CanCopy())
1157 {
1158 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1159 }
1160 }
1161
1162 void wxTextCtrl::Cut()
1163 {
1164 if (CanCut())
1165 {
1166 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1167 }
1168 }
1169
1170 void wxTextCtrl::Paste()
1171 {
1172 if (CanPaste())
1173 {
1174 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1175 }
1176 }
1177
1178 bool wxTextCtrl::HasSelection() const
1179 {
1180 long from, to;
1181 GetSelection(&from, &to);
1182 return from != to;
1183 }
1184
1185 bool wxTextCtrl::CanCopy() const
1186 {
1187 // Can copy if there's a selection
1188 return HasSelection();
1189 }
1190
1191 bool wxTextCtrl::CanCut() const
1192 {
1193 return CanCopy() && IsEditable();
1194 }
1195
1196 bool wxTextCtrl::CanPaste() const
1197 {
1198 if ( !IsEditable() )
1199 return false;
1200
1201 #if wxUSE_RICHEDIT
1202 if ( IsRich() )
1203 {
1204 UINT cf = 0; // 0 == any format
1205
1206 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1207 }
1208 #endif // wxUSE_RICHEDIT
1209
1210 // Standard edit control: check for straight text on clipboard
1211 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1212 return false;
1213
1214 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1215 ::CloseClipboard();
1216
1217 return isTextAvailable;
1218 }
1219
1220 // ----------------------------------------------------------------------------
1221 // Accessors
1222 // ----------------------------------------------------------------------------
1223
1224 void wxTextCtrl::SetEditable(bool editable)
1225 {
1226 HWND hWnd = GetHwnd();
1227 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1228 }
1229
1230 void wxTextCtrl::SetInsertionPoint(long pos)
1231 {
1232 DoSetSelection(pos, pos);
1233 }
1234
1235 void wxTextCtrl::SetInsertionPointEnd()
1236 {
1237 // we must not do anything if the caret is already there because calling
1238 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1239 // if it doesn't actually move the caret anywhere and so the simple fact of
1240 // doing it results in horrible flicker when appending big amounts of text
1241 // to the control in a few chunks (see DoAddText() test in the text sample)
1242 const wxTextPos lastPosition = GetLastPosition();
1243 if ( GetInsertionPoint() == lastPosition )
1244 {
1245 return;
1246 }
1247
1248 long pos;
1249
1250 #if wxUSE_RICHEDIT
1251 if ( m_verRichEdit == 1 )
1252 {
1253 // we don't have to waste time calling GetLastPosition() in this case
1254 pos = -1;
1255 }
1256 else // !RichEdit 1.0
1257 #endif // wxUSE_RICHEDIT
1258 {
1259 pos = lastPosition;
1260 }
1261
1262 SetInsertionPoint(pos);
1263 }
1264
1265 long wxTextCtrl::GetInsertionPoint() const
1266 {
1267 #if wxUSE_RICHEDIT
1268 if ( IsRich() )
1269 {
1270 CHARRANGE range;
1271 range.cpMin = 0;
1272 range.cpMax = 0;
1273 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1274 return range.cpMin;
1275 }
1276 #endif // wxUSE_RICHEDIT
1277
1278 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1279 return Pos & 0xFFFF;
1280 }
1281
1282 wxTextPos wxTextCtrl::GetLastPosition() const
1283 {
1284 int numLines = GetNumberOfLines();
1285 long posStartLastLine = XYToPosition(0, numLines - 1);
1286
1287 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1288
1289 return posStartLastLine + lenLastLine;
1290 }
1291
1292 // If the return values from and to are the same, there is no
1293 // selection.
1294 void wxTextCtrl::GetSelection(long* from, long* to) const
1295 {
1296 #if wxUSE_RICHEDIT
1297 if ( IsRich() )
1298 {
1299 CHARRANGE charRange;
1300 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1301
1302 *from = charRange.cpMin;
1303 *to = charRange.cpMax;
1304 }
1305 else
1306 #endif // !wxUSE_RICHEDIT
1307 {
1308 DWORD dwStart, dwEnd;
1309 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1310
1311 *from = dwStart;
1312 *to = dwEnd;
1313 }
1314 }
1315
1316 bool wxTextCtrl::IsEditable() const
1317 {
1318 // strangely enough, we may be called before the control is created: our
1319 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1320 // us
1321 if ( !m_hWnd )
1322 return true;
1323
1324 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1325
1326 return (style & ES_READONLY) == 0;
1327 }
1328
1329 // ----------------------------------------------------------------------------
1330 // selection
1331 // ----------------------------------------------------------------------------
1332
1333 void wxTextCtrl::SetSelection(long from, long to)
1334 {
1335 // if from and to are both -1, it means (in wxWidgets) that all text should
1336 // be selected - translate into Windows convention
1337 if ( (from == -1) && (to == -1) )
1338 {
1339 from = 0;
1340 to = -1;
1341 }
1342
1343 DoSetSelection(from, to);
1344 }
1345
1346 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1347 {
1348 HWND hWnd = GetHwnd();
1349
1350 #if wxUSE_RICHEDIT
1351 if ( IsRich() )
1352 {
1353 CHARRANGE range;
1354 range.cpMin = from;
1355 range.cpMax = to;
1356 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1357 }
1358 else
1359 #endif // wxUSE_RICHEDIT
1360 {
1361 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1362 }
1363
1364 if ( scrollCaret && !IsFrozen() )
1365 {
1366 #if wxUSE_RICHEDIT
1367 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1368 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1369 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1370 // option is set (but it does work ok in richedit 1.0 mode...)
1371 //
1372 // so to make it work we either need to give focus to it here which
1373 // will probably create many problems (dummy focus events; window
1374 // containing the text control being brought to foreground
1375 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1376 // create other problems too -- and in fact it does because if we turn
1377 // on/off this style while appending the text to the control, the
1378 // vertical scrollbar never appears in it even if we append tons of
1379 // text and to work around this the only solution I found was to use
1380 // ES_DISABLENOSCROLL
1381 //
1382 // this is very ugly but I don't see any other way to make this work
1383 long style = 0;
1384 if ( GetRichVersion() > 1 )
1385 {
1386 if ( !HasFlag(wxTE_NOHIDESEL) )
1387 {
1388 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1389 // others, remember the style so we can reset it later if needed
1390 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1391 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1392 ECOOP_OR, ECO_NOHIDESEL);
1393 }
1394 //else: everything is already ok
1395 }
1396 #endif // wxUSE_RICHEDIT
1397
1398 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1399
1400 #if wxUSE_RICHEDIT
1401 // restore ECO_NOHIDESEL if we changed it
1402 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1403 {
1404 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1405 ECOOP_AND, ~ECO_NOHIDESEL);
1406 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1407 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1408 }
1409 #endif // wxUSE_RICHEDIT
1410 }
1411 }
1412
1413 // ----------------------------------------------------------------------------
1414 // Working with files
1415 // ----------------------------------------------------------------------------
1416
1417 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1418 {
1419 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1420 {
1421 // update the size limit if needed
1422 AdjustSpaceLimit();
1423
1424 return true;
1425 }
1426
1427 return false;
1428 }
1429
1430 // ----------------------------------------------------------------------------
1431 // Editing
1432 // ----------------------------------------------------------------------------
1433
1434 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1435 {
1436 // Set selection and remove it
1437 DoSetSelection(from, to, false /* don't scroll caret into view */);
1438
1439 DoWriteText(value, SetValue_SelectionOnly);
1440 }
1441
1442 void wxTextCtrl::Remove(long from, long to)
1443 {
1444 Replace(from, to, wxEmptyString);
1445 }
1446
1447 bool wxTextCtrl::IsModified() const
1448 {
1449 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1450 }
1451
1452 void wxTextCtrl::MarkDirty()
1453 {
1454 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1455 }
1456
1457 void wxTextCtrl::DiscardEdits()
1458 {
1459 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1460 }
1461
1462 int wxTextCtrl::GetNumberOfLines() const
1463 {
1464 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1465 }
1466
1467 // ----------------------------------------------------------------------------
1468 // Positions <-> coords
1469 // ----------------------------------------------------------------------------
1470
1471 long wxTextCtrl::XYToPosition(long x, long y) const
1472 {
1473 // This gets the char index for the _beginning_ of this line
1474 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1475
1476 return charIndex + x;
1477 }
1478
1479 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1480 {
1481 HWND hWnd = GetHwnd();
1482
1483 // This gets the line number containing the character
1484 long lineNo;
1485 #if wxUSE_RICHEDIT
1486 if ( IsRich() )
1487 {
1488 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1489 }
1490 else
1491 #endif // wxUSE_RICHEDIT
1492 {
1493 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1494 }
1495
1496 if ( lineNo == -1 )
1497 {
1498 // no such line
1499 return false;
1500 }
1501
1502 // This gets the char index for the _beginning_ of this line
1503 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1504 if ( charIndex == -1 )
1505 {
1506 return false;
1507 }
1508
1509 // The X position must therefore be the different between pos and charIndex
1510 if ( x )
1511 *x = pos - charIndex;
1512 if ( y )
1513 *y = lineNo;
1514
1515 return true;
1516 }
1517
1518 wxTextCtrlHitTestResult
1519 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1520 {
1521 // first get the position from Windows
1522 LPARAM lParam;
1523
1524 #if wxUSE_RICHEDIT
1525 POINTL ptl;
1526 if ( IsRich() )
1527 {
1528 // for rich edit controls the position is passed iva the struct fields
1529 ptl.x = pt.x;
1530 ptl.y = pt.y;
1531 lParam = (LPARAM)&ptl;
1532 }
1533 else
1534 #endif // wxUSE_RICHEDIT
1535 {
1536 // for the plain ones, we are limited to 16 bit positions which are
1537 // combined in a single 32 bit value
1538 lParam = MAKELPARAM(pt.x, pt.y);
1539 }
1540
1541 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1542
1543 if ( pos == -1 )
1544 {
1545 // this seems to indicate an error...
1546 return wxTE_HT_UNKNOWN;
1547 }
1548
1549 #if wxUSE_RICHEDIT
1550 if ( !IsRich() )
1551 #endif // wxUSE_RICHEDIT
1552 {
1553 // for plain EDIT controls the higher word contains something else
1554 pos = LOWORD(pos);
1555 }
1556
1557
1558 // next determine where it is relatively to our point: EM_CHARFROMPOS
1559 // always returns the closest character but we need to be more precise, so
1560 // double check that we really are where it pretends
1561 POINTL ptReal;
1562
1563 #if wxUSE_RICHEDIT
1564 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1565 // we don't know how to do it
1566 if ( IsRich() )
1567 {
1568 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1569 }
1570 else
1571 #endif // wxUSE_RICHEDIT
1572 {
1573 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1574
1575 if ( lRc == -1 )
1576 {
1577 // this is apparently returned when pos corresponds to the last
1578 // position
1579 ptReal.x =
1580 ptReal.y = 0;
1581 }
1582 else
1583 {
1584 ptReal.x = LOWORD(lRc);
1585 ptReal.y = HIWORD(lRc);
1586 }
1587 }
1588
1589 wxTextCtrlHitTestResult rc;
1590
1591 if ( pt.y > ptReal.y + GetCharHeight() )
1592 rc = wxTE_HT_BELOW;
1593 else if ( pt.x > ptReal.x + GetCharWidth() )
1594 rc = wxTE_HT_BEYOND;
1595 else
1596 rc = wxTE_HT_ON_TEXT;
1597
1598 if ( posOut )
1599 *posOut = pos;
1600
1601 return rc;
1602 }
1603
1604 // ----------------------------------------------------------------------------
1605 //
1606 // ----------------------------------------------------------------------------
1607
1608 void wxTextCtrl::ShowPosition(long pos)
1609 {
1610 HWND hWnd = GetHwnd();
1611
1612 // To scroll to a position, we pass the number of lines and characters
1613 // to scroll *by*. This means that we need to:
1614 // (1) Find the line position of the current line.
1615 // (2) Find the line position of pos.
1616 // (3) Scroll by (pos - current).
1617 // For now, ignore the horizontal scrolling.
1618
1619 // Is this where scrolling is relative to - the line containing the caret?
1620 // Or is the first visible line??? Try first visible line.
1621 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1622
1623 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1624
1625 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1626
1627 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1628
1629 if (linesToScroll != 0)
1630 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1631 }
1632
1633 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1634 {
1635 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1636 }
1637
1638 int wxTextCtrl::GetLineLength(long lineNo) const
1639 {
1640 long pos = XYToPosition(0, lineNo);
1641
1642 return GetLengthOfLineContainingPos(pos);
1643 }
1644
1645 wxString wxTextCtrl::GetLineText(long lineNo) const
1646 {
1647 size_t len = (size_t)GetLineLength(lineNo) + 1;
1648
1649 // there must be at least enough place for the length WORD in the
1650 // buffer
1651 len += sizeof(WORD);
1652
1653 wxString str;
1654 {
1655 wxStringBufferLength tmp(str, len);
1656 wxChar *buf = tmp;
1657
1658 *(WORD *)buf = (WORD)len;
1659 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1660
1661 #if wxUSE_RICHEDIT
1662 if ( IsRich() )
1663 {
1664 // remove the '\r' returned by the rich edit control, the user code
1665 // should never see it
1666 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1667 {
1668 buf[len - 2] = _T('\n');
1669 len--;
1670 }
1671 }
1672 #endif // wxUSE_RICHEDIT
1673
1674 // remove the '\n' at the end, if any (this is how this function is
1675 // supposed to work according to the docs)
1676 if ( buf[len - 1] == _T('\n') )
1677 {
1678 len--;
1679 }
1680
1681 buf[len] = 0;
1682 tmp.SetLength(len);
1683 }
1684
1685 return str;
1686 }
1687
1688 void wxTextCtrl::SetMaxLength(unsigned long len)
1689 {
1690 #if wxUSE_RICHEDIT
1691 if ( IsRich() )
1692 {
1693 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1694 }
1695 else
1696 #endif // wxUSE_RICHEDIT
1697 {
1698 if ( len >= 0xffff )
1699 {
1700 // this will set it to a platform-dependent maximum (much more
1701 // than 64Kb under NT)
1702 len = 0;
1703 }
1704
1705 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1706 }
1707 }
1708
1709 // ----------------------------------------------------------------------------
1710 // Undo/redo
1711 // ----------------------------------------------------------------------------
1712
1713 void wxTextCtrl::Undo()
1714 {
1715 if (CanUndo())
1716 {
1717 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1718 }
1719 }
1720
1721 void wxTextCtrl::Redo()
1722 {
1723 if (CanRedo())
1724 {
1725 #if wxUSE_RICHEDIT
1726 if (GetRichVersion() > 1)
1727 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1728 else
1729 #endif
1730 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1731 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1732 }
1733 }
1734
1735 bool wxTextCtrl::CanUndo() const
1736 {
1737 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1738 }
1739
1740 bool wxTextCtrl::CanRedo() const
1741 {
1742 #if wxUSE_RICHEDIT
1743 if (GetRichVersion() > 1)
1744 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1745 else
1746 #endif
1747 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1748 }
1749
1750 // ----------------------------------------------------------------------------
1751 // caret handling (Windows only)
1752 // ----------------------------------------------------------------------------
1753
1754 bool wxTextCtrl::ShowNativeCaret(bool show)
1755 {
1756 if ( show != m_isNativeCaretShown )
1757 {
1758 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1759 {
1760 // not an error, may simply indicate that it's not shown/hidden
1761 // yet (i.e. it had been hidden/showh 2 times before)
1762 return false;
1763 }
1764
1765 m_isNativeCaretShown = show;
1766 }
1767
1768 return true;
1769 }
1770
1771 // ----------------------------------------------------------------------------
1772 // implemenation details
1773 // ----------------------------------------------------------------------------
1774
1775 void wxTextCtrl::Command(wxCommandEvent & event)
1776 {
1777 SetValue(event.GetString());
1778 ProcessCommand (event);
1779 }
1780
1781 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1782 {
1783 // By default, load the first file into the text window.
1784 if (event.GetNumberOfFiles() > 0)
1785 {
1786 LoadFile(event.GetFiles()[0]);
1787 }
1788 }
1789
1790 // ----------------------------------------------------------------------------
1791 // kbd input processing
1792 // ----------------------------------------------------------------------------
1793
1794 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1795 {
1796 // check for our special keys here: if we don't do it and the parent frame
1797 // uses them as accelerators, they wouldn't work at all, so we disable
1798 // usual preprocessing for them
1799 if ( msg->message == WM_KEYDOWN )
1800 {
1801 const WPARAM vkey = msg->wParam;
1802 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1803 {
1804 // Alt-Backspace is accelerator for "Undo"
1805 if ( vkey == VK_BACK )
1806 return false;
1807 }
1808 else // no Alt
1809 {
1810 // we want to process some Ctrl-foo and Shift-bar but no key
1811 // combinations without either Ctrl or Shift nor with both of them
1812 // pressed
1813 const int ctrl = wxIsCtrlDown(),
1814 shift = wxIsShiftDown();
1815 switch ( ctrl + shift )
1816 {
1817 default:
1818 wxFAIL_MSG( _T("how many modifiers have we got?") );
1819 // fall through
1820
1821 case 0:
1822 if ( IsMultiLine() && vkey == VK_RETURN )
1823 return false;
1824 // fall through
1825 case 2:
1826 break;
1827
1828 case 1:
1829 // either Ctrl or Shift pressed
1830 if ( ctrl )
1831 {
1832 switch ( vkey )
1833 {
1834 case 'C':
1835 case 'V':
1836 case 'X':
1837 case VK_INSERT:
1838 case VK_DELETE:
1839 case VK_HOME:
1840 case VK_END:
1841 return false;
1842 }
1843 }
1844 else // Shift is pressed
1845 {
1846 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1847 return false;
1848 }
1849 }
1850 }
1851 }
1852
1853 return wxControl::MSWShouldPreProcessMessage(msg);
1854 }
1855
1856 void wxTextCtrl::OnChar(wxKeyEvent& event)
1857 {
1858 switch ( event.GetKeyCode() )
1859 {
1860 case WXK_RETURN:
1861 {
1862 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1863 InitCommandEvent(event);
1864 event.SetString(GetValue());
1865 if ( GetEventHandler()->ProcessEvent(event) )
1866 if ( !HasFlag(wxTE_MULTILINE) )
1867 return;
1868 //else: multiline controls need Enter for themselves
1869 }
1870 break;
1871
1872 case WXK_TAB:
1873 // ok, so this is getting absolutely ridiculous but I don't see
1874 // any other way to fix this bug: when a multiline text control is
1875 // inside a wxFrame, we need to generate the navigation event as
1876 // otherwise nothing happens at all, but when the same control is
1877 // created inside a dialog, IsDialogMessage() *does* switch focus
1878 // all by itself and so if we do it here as well, it is advanced
1879 // twice and goes to the next control... to prevent this from
1880 // happening we're doing this ugly check, the logic being that if
1881 // we don't have focus then it had been already changed to the next
1882 // control
1883 //
1884 // the right thing to do would, of course, be to understand what
1885 // the hell is IsDialogMessage() doing but this is beyond my feeble
1886 // forces at the moment unfortunately
1887 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1888 {
1889 if ( FindFocus() == this )
1890 {
1891 int flags = 0;
1892 if (!event.ShiftDown())
1893 flags |= wxNavigationKeyEvent::IsForward ;
1894 if (event.ControlDown())
1895 flags |= wxNavigationKeyEvent::WinChange ;
1896 if (Navigate(flags))
1897 return;
1898 }
1899 }
1900 else
1901 {
1902 // Insert tab since calling the default Windows handler
1903 // doesn't seem to do it
1904 WriteText(wxT("\t"));
1905 return;
1906 }
1907 break;
1908 }
1909
1910 // no, we didn't process it
1911 event.Skip();
1912 }
1913
1914 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1915 {
1916 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1917
1918 if ( nMsg == WM_GETDLGCODE )
1919 {
1920 // we always want the chars and the arrows: the arrows for navigation
1921 // and the chars because we want Ctrl-C to work even in a read only
1922 // control
1923 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1924
1925 if ( IsEditable() )
1926 {
1927 // we may have several different cases:
1928 // 1. normal case: both TAB and ENTER are used for dlg navigation
1929 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1930 // next control in the dialog
1931 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1932 // navigation
1933 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1934 // to the next control
1935
1936 // the multiline edit control should always get <Return> for itself
1937 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1938 lDlgCode |= DLGC_WANTMESSAGE;
1939
1940 if ( HasFlag(wxTE_PROCESS_TAB) )
1941 lDlgCode |= DLGC_WANTTAB;
1942
1943 lRc |= lDlgCode;
1944 }
1945 else // !editable
1946 {
1947 // NB: use "=", not "|=" as the base class version returns the
1948 // same flags is this state as usual (i.e. including
1949 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1950 // native Win32 apps?) but for now live with it.
1951 lRc = lDlgCode;
1952 }
1953 }
1954
1955 return lRc;
1956 }
1957
1958 // ----------------------------------------------------------------------------
1959 // text control event processing
1960 // ----------------------------------------------------------------------------
1961
1962 bool wxTextCtrl::SendUpdateEvent()
1963 {
1964 switch ( m_updatesCount )
1965 {
1966 case 0:
1967 // remember that we've got an update
1968 m_updatesCount++;
1969 break;
1970
1971 case 1:
1972 // we had already sent one event since the last control modification
1973 return false;
1974
1975 default:
1976 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
1977 // fall through
1978
1979 case -1:
1980 // we hadn't updated the control ourselves, this event comes from
1981 // the user, don't need to ignore it nor update the count
1982 break;
1983
1984 case -2:
1985 // the control was updated programmatically and we do NOT want to
1986 // send events
1987 return false;
1988 }
1989
1990 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1991 InitCommandEvent(event);
1992
1993 return ProcessCommand(event);
1994 }
1995
1996 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1997 {
1998 switch ( param )
1999 {
2000 case EN_SETFOCUS:
2001 case EN_KILLFOCUS:
2002 {
2003 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
2004 : wxEVT_SET_FOCUS,
2005 m_windowId);
2006 event.SetEventObject(this);
2007 GetEventHandler()->ProcessEvent(event);
2008 }
2009 break;
2010
2011 case EN_CHANGE:
2012 SendUpdateEvent();
2013 break;
2014
2015 case EN_MAXTEXT:
2016 // the text size limit has been hit -- try to increase it
2017 if ( !AdjustSpaceLimit() )
2018 {
2019 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2020 InitCommandEvent(event);
2021 event.SetString(GetValue());
2022 ProcessCommand(event);
2023 }
2024 break;
2025
2026 // the other edit notification messages are not processed
2027 default:
2028 return false;
2029 }
2030
2031 // processed
2032 return true;
2033 }
2034
2035 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2036 {
2037 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2038 return MSWControlColorDisabled(hDC);
2039
2040 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2041 }
2042
2043 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2044 {
2045 // HACK: we try to automatically extend the limit for the amount of text
2046 // to allow (interactively) entering more than 64Kb of text under
2047 // Win9x but we shouldn't reset the text limit which was previously
2048 // set explicitly with SetMaxLength()
2049 //
2050 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2051 // know the limit we set (if any). We could solve this by storing the
2052 // limit we set in wxTextCtrl but to save space we prefer to simply
2053 // test here the actual limit value: we consider that SetMaxLength()
2054 // can only be called for small values while EN_MAXTEXT is only sent
2055 // for large values (in practice the default limit seems to be 30000
2056 // but make it smaller just to be on the safe side)
2057 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2058 return *len < 10001;
2059
2060 }
2061
2062 bool wxTextCtrl::AdjustSpaceLimit()
2063 {
2064 unsigned int limit;
2065 if ( HasSpaceLimit(&limit) )
2066 return false;
2067
2068 unsigned int len = ::GetWindowTextLength(GetHwnd());
2069 if ( len >= limit )
2070 {
2071 // increment in 32Kb chunks
2072 SetMaxLength(len + 0x8000);
2073 }
2074
2075 // we changed the limit
2076 return true;
2077 }
2078
2079 bool wxTextCtrl::AcceptsFocus() const
2080 {
2081 // we don't want focus if we can't be edited unless we're a multiline
2082 // control because then it might be still nice to get focus from keyboard
2083 // to be able to scroll it without mouse
2084 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2085 }
2086
2087 wxSize wxTextCtrl::DoGetBestSize() const
2088 {
2089 int cx, cy;
2090 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2091
2092 int wText = DEFAULT_ITEM_WIDTH;
2093
2094 int hText = cy;
2095 if ( m_windowStyle & wxTE_MULTILINE )
2096 {
2097 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2098 }
2099 //else: for single line control everything is ok
2100
2101 // we have to add the adjustments for the control height only once, not
2102 // once per line, so do it after multiplication above
2103 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2104
2105 return wxSize(wText, hText);
2106 }
2107
2108 // ----------------------------------------------------------------------------
2109 // standard handlers for standard edit menu events
2110 // ----------------------------------------------------------------------------
2111
2112 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2113 {
2114 Cut();
2115 }
2116
2117 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2118 {
2119 Copy();
2120 }
2121
2122 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2123 {
2124 Paste();
2125 }
2126
2127 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2128 {
2129 Undo();
2130 }
2131
2132 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2133 {
2134 Redo();
2135 }
2136
2137 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2138 {
2139 long from, to;
2140 GetSelection(& from, & to);
2141 if (from != -1 && to != -1)
2142 Remove(from, to);
2143 }
2144
2145 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2146 {
2147 SetSelection(-1, -1);
2148 }
2149
2150 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2151 {
2152 event.Enable( CanCut() );
2153 }
2154
2155 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2156 {
2157 event.Enable( CanCopy() );
2158 }
2159
2160 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2161 {
2162 event.Enable( CanPaste() );
2163 }
2164
2165 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2166 {
2167 event.Enable( CanUndo() );
2168 }
2169
2170 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2171 {
2172 event.Enable( CanRedo() );
2173 }
2174
2175 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2176 {
2177 long from, to;
2178 GetSelection(& from, & to);
2179 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2180 }
2181
2182 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2183 {
2184 event.Enable(GetLastPosition() > 0);
2185 }
2186
2187 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2188 {
2189 #if wxUSE_RICHEDIT
2190 if (IsRich())
2191 {
2192 if (!m_privateContextMenu)
2193 {
2194 m_privateContextMenu = new wxMenu;
2195 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2196 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2197 m_privateContextMenu->AppendSeparator();
2198 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2199 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2200 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2201 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2202 m_privateContextMenu->AppendSeparator();
2203 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2204 }
2205 PopupMenu(m_privateContextMenu);
2206 return;
2207 }
2208 else
2209 #endif
2210 event.Skip();
2211 }
2212
2213 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2214 {
2215 // be sure the caret remains invisible if the user had hidden it
2216 if ( !m_isNativeCaretShown )
2217 {
2218 ::HideCaret(GetHwnd());
2219 }
2220 }
2221
2222 // ----------------------------------------------------------------------------
2223 // Default colors for MSW text control
2224 //
2225 // Set default background color to the native white instead of
2226 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2227 // ----------------------------------------------------------------------------
2228
2229 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2230 {
2231 wxVisualAttributes attrs;
2232 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2233 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2234 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2235
2236 return attrs;
2237 }
2238
2239 // the rest of the file only deals with the rich edit controls
2240 #if wxUSE_RICHEDIT
2241
2242 // ----------------------------------------------------------------------------
2243 // EN_LINK processing
2244 // ----------------------------------------------------------------------------
2245
2246 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2247 {
2248 NMHDR *hdr = (NMHDR* )lParam;
2249 switch ( hdr->code )
2250 {
2251 case EN_MSGFILTER:
2252 {
2253 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2254 UINT msg = msgf->msg;
2255
2256 // this is a bit crazy but richedit 1.0 sends us all mouse
2257 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2258 // generate the wxWin events for this message manually
2259 //
2260 // NB: in fact, this is still not totally correct as it does
2261 // send us WM_LBUTTONUP if the selection was cleared by the
2262 // last click -- so currently we get 2 events in this case,
2263 // but as I don't see any obvious way to check for this I
2264 // leave this code in place because it's still better than
2265 // not getting left up events at all
2266 if ( msg == WM_LBUTTONUP )
2267 {
2268 WXUINT flags = msgf->wParam;
2269 int x = GET_X_LPARAM(msgf->lParam),
2270 y = GET_Y_LPARAM(msgf->lParam);
2271
2272 HandleMouseEvent(msg, x, y, flags);
2273 }
2274 }
2275
2276 // return true to process the event (and false to ignore it)
2277 return true;
2278
2279 case EN_LINK:
2280 {
2281 const ENLINK *enlink = (ENLINK *)hdr;
2282
2283 switch ( enlink->msg )
2284 {
2285 case WM_SETCURSOR:
2286 // ok, so it is hardcoded - do we really nee to
2287 // customize it?
2288 {
2289 wxCursor cur(wxCURSOR_HAND);
2290 ::SetCursor(GetHcursorOf(cur));
2291 *result = TRUE;
2292 break;
2293 }
2294
2295 case WM_MOUSEMOVE:
2296 case WM_LBUTTONDOWN:
2297 case WM_LBUTTONUP:
2298 case WM_LBUTTONDBLCLK:
2299 case WM_RBUTTONDOWN:
2300 case WM_RBUTTONUP:
2301 case WM_RBUTTONDBLCLK:
2302 // send a mouse event
2303 {
2304 static const wxEventType eventsMouse[] =
2305 {
2306 wxEVT_MOTION,
2307 wxEVT_LEFT_DOWN,
2308 wxEVT_LEFT_UP,
2309 wxEVT_LEFT_DCLICK,
2310 wxEVT_RIGHT_DOWN,
2311 wxEVT_RIGHT_UP,
2312 wxEVT_RIGHT_DCLICK,
2313 };
2314
2315 // the event ids are consecutive
2316 wxMouseEvent
2317 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2318
2319 InitMouseEvent(evtMouse,
2320 GET_X_LPARAM(enlink->lParam),
2321 GET_Y_LPARAM(enlink->lParam),
2322 enlink->wParam);
2323
2324 wxTextUrlEvent event(m_windowId, evtMouse,
2325 enlink->chrg.cpMin,
2326 enlink->chrg.cpMax);
2327
2328 InitCommandEvent(event);
2329
2330 *result = ProcessCommand(event);
2331 }
2332 break;
2333 }
2334 }
2335 return true;
2336 }
2337
2338 // not processed, leave it to the base class
2339 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2340 }
2341
2342 // ----------------------------------------------------------------------------
2343 // colour setting for the rich edit controls
2344 // ----------------------------------------------------------------------------
2345
2346 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2347 {
2348 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2349 {
2350 // colour didn't really change
2351 return false;
2352 }
2353
2354 if ( IsRich() )
2355 {
2356 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2357 // EM_SETBKGNDCOLOR additionally
2358 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2359 }
2360
2361 return true;
2362 }
2363
2364 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2365 {
2366 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2367 {
2368 // colour didn't really change
2369 return false;
2370 }
2371
2372 if ( IsRich() )
2373 {
2374 // change the colour of everything
2375 CHARFORMAT cf;
2376 wxZeroMemory(cf);
2377 cf.cbSize = sizeof(cf);
2378 cf.dwMask = CFM_COLOR;
2379 cf.crTextColor = wxColourToRGB(colour);
2380 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2381 }
2382
2383 return true;
2384 }
2385
2386 // ----------------------------------------------------------------------------
2387 // styling support for rich edit controls
2388 // ----------------------------------------------------------------------------
2389
2390 #if wxUSE_RICHEDIT
2391
2392 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2393 {
2394 if ( !IsRich() )
2395 {
2396 // can't do it with normal text control
2397 return false;
2398 }
2399
2400 // the richedit 1.0 doesn't handle setting background colour, so don't
2401 // even try to do anything if it's the only thing we want to change
2402 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2403 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2404 !style.HasTabs() )
2405 {
2406 // nothing to do: return true if there was really nothing to do and
2407 // false if we failed to set bg colour
2408 return !style.HasBackgroundColour();
2409 }
2410
2411 // order the range if needed
2412 if ( start > end )
2413 {
2414 long tmp = start;
2415 start = end;
2416 end = tmp;
2417 }
2418
2419 // we can only change the format of the selection, so select the range we
2420 // want and restore the old selection later
2421 long startOld, endOld;
2422 GetSelection(&startOld, &endOld);
2423
2424 // but do we really have to change the selection?
2425 bool changeSel = start != startOld || end != endOld;
2426
2427 if ( changeSel )
2428 {
2429 DoSetSelection(start, end, false /* don't scroll caret into view */);
2430 }
2431
2432 // initialize CHARFORMAT struct
2433 #if wxUSE_RICHEDIT2
2434 CHARFORMAT2 cf;
2435 #else
2436 CHARFORMAT cf;
2437 #endif
2438
2439 wxZeroMemory(cf);
2440
2441 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2442 // CHARFORMAT in that case
2443 #if wxUSE_RICHEDIT2
2444 if ( m_verRichEdit == 1 )
2445 {
2446 // this is the only thing the control is going to grok
2447 cf.cbSize = sizeof(CHARFORMAT);
2448 }
2449 else
2450 #endif
2451 {
2452 // CHARFORMAT or CHARFORMAT2
2453 cf.cbSize = sizeof(cf);
2454 }
2455
2456 if ( style.HasFont() )
2457 {
2458 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2459 // but using it doesn't seem to hurt neither so leaving it for now
2460
2461 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2462 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2463
2464 // fill in data from LOGFONT but recalculate lfHeight because we need
2465 // the real height in twips and not the negative number which
2466 // wxFillLogFont() returns (this is correct in general and works with
2467 // the Windows font mapper, but not here)
2468 LOGFONT lf;
2469 wxFillLogFont(&lf, &style.GetFont());
2470 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2471 cf.bCharSet = lf.lfCharSet;
2472 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2473 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2474
2475 // also deal with underline/italic/bold attributes: note that we must
2476 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2477 // style to allow clearing it
2478 if ( lf.lfItalic )
2479 {
2480 cf.dwEffects |= CFE_ITALIC;
2481 }
2482
2483 if ( lf.lfWeight == FW_BOLD )
2484 {
2485 cf.dwEffects |= CFE_BOLD;
2486 }
2487
2488 if ( lf.lfUnderline )
2489 {
2490 cf.dwEffects |= CFE_UNDERLINE;
2491 }
2492
2493 // strikeout fonts are not supported by wxWidgets
2494 }
2495
2496 if ( style.HasTextColour() )
2497 {
2498 cf.dwMask |= CFM_COLOR;
2499 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2500 }
2501
2502 #if wxUSE_RICHEDIT2
2503 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2504 {
2505 cf.dwMask |= CFM_BACKCOLOR;
2506 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2507 }
2508 #endif // wxUSE_RICHEDIT2
2509
2510 // do format the selection
2511 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2512 SCF_SELECTION, (LPARAM)&cf) != 0;
2513 if ( !ok )
2514 {
2515 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2516 }
2517
2518 // now do the paragraph formatting
2519 PARAFORMAT2 pf;
2520 wxZeroMemory(pf);
2521 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2522 // PARAFORMAT in that case
2523 #if wxUSE_RICHEDIT2
2524 if ( m_verRichEdit == 1 )
2525 {
2526 // this is the only thing the control is going to grok
2527 pf.cbSize = sizeof(PARAFORMAT);
2528 }
2529 else
2530 #endif
2531 {
2532 // PARAFORMAT or PARAFORMAT2
2533 pf.cbSize = sizeof(pf);
2534 }
2535
2536 if (style.HasAlignment())
2537 {
2538 pf.dwMask |= PFM_ALIGNMENT;
2539 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2540 pf.wAlignment = PFA_RIGHT;
2541 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2542 pf.wAlignment = PFA_CENTER;
2543 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2544 pf.wAlignment = PFA_JUSTIFY;
2545 else
2546 pf.wAlignment = PFA_LEFT;
2547 }
2548
2549 if (style.HasLeftIndent())
2550 {
2551 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2552
2553 // Convert from 1/10 mm to TWIPS
2554 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2555 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2556 }
2557
2558 if (style.HasRightIndent())
2559 {
2560 pf.dwMask |= PFM_RIGHTINDENT;
2561
2562 // Convert from 1/10 mm to TWIPS
2563 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2564 }
2565
2566 if (style.HasTabs())
2567 {
2568 pf.dwMask |= PFM_TABSTOPS;
2569
2570 const wxArrayInt& tabs = style.GetTabs();
2571
2572 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2573 size_t i;
2574 for (i = 0; i < (size_t) pf.cTabCount; i++)
2575 {
2576 // Convert from 1/10 mm to TWIPS
2577 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2578 }
2579 }
2580
2581 #if wxUSE_RICHEDIT2
2582 if ( m_verRichEdit > 1 )
2583 {
2584 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2585 {
2586 // Use RTL paragraphs in RTL mode to get proper layout
2587 pf.dwMask |= PFM_RTLPARA;
2588 pf.wEffects |= PFE_RTLPARA;
2589 }
2590 }
2591 #endif // wxUSE_RICHEDIT2
2592
2593 if ( pf.dwMask )
2594 {
2595 // do format the selection
2596 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2597 0, (LPARAM) &pf) != 0;
2598 if ( !ok )
2599 {
2600 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2601 }
2602 }
2603
2604 if ( changeSel )
2605 {
2606 // restore the original selection
2607 DoSetSelection(startOld, endOld, false);
2608 }
2609
2610 return ok;
2611 }
2612
2613 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2614 {
2615 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2616 return false;
2617
2618 if ( IsEditable() )
2619 {
2620 // we have to do this or the style wouldn't apply for the text typed by
2621 // the user
2622 wxTextPos posLast = GetLastPosition();
2623 SetStyle(posLast, posLast, m_defaultStyle);
2624 }
2625
2626 return true;
2627 }
2628
2629 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2630 {
2631 if ( !IsRich() )
2632 {
2633 // can't do it with normal text control
2634 return false;
2635 }
2636
2637 // initialize CHARFORMAT struct
2638 #if wxUSE_RICHEDIT2
2639 CHARFORMAT2 cf;
2640 #else
2641 CHARFORMAT cf;
2642 #endif
2643
2644 wxZeroMemory(cf);
2645
2646 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2647 // CHARFORMAT in that case
2648 #if wxUSE_RICHEDIT2
2649 if ( m_verRichEdit == 1 )
2650 {
2651 // this is the only thing the control is going to grok
2652 cf.cbSize = sizeof(CHARFORMAT);
2653 }
2654 else
2655 #endif
2656 {
2657 // CHARFORMAT or CHARFORMAT2
2658 cf.cbSize = sizeof(cf);
2659 }
2660 // we can only change the format of the selection, so select the range we
2661 // want and restore the old selection later
2662 long startOld, endOld;
2663 GetSelection(&startOld, &endOld);
2664
2665 // but do we really have to change the selection?
2666 bool changeSel = position != startOld || position != endOld;
2667
2668 if ( changeSel )
2669 {
2670 DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2671 }
2672
2673 // get the selection formatting
2674 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2675 SCF_SELECTION, (LPARAM)&cf) ;
2676
2677
2678 LOGFONT lf;
2679 lf.lfHeight = cf.yHeight;
2680 lf.lfWidth = 0;
2681 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2682 lf.lfClipPrecision = 0;
2683 lf.lfEscapement = 0;
2684 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2685
2686 //NOTE: we _MUST_ set each of these values to _something_ since we
2687 //do not call wxZeroMemory on the LOGFONT lf
2688 if (cf.dwEffects & CFE_ITALIC)
2689 lf.lfItalic = TRUE;
2690 else
2691 lf.lfItalic = FALSE;
2692
2693 lf.lfOrientation = 0;
2694 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2695 lf.lfQuality = 0;
2696
2697 if (cf.dwEffects & CFE_STRIKEOUT)
2698 lf.lfStrikeOut = TRUE;
2699 else
2700 lf.lfStrikeOut = FALSE;
2701
2702 if (cf.dwEffects & CFE_UNDERLINE)
2703 lf.lfUnderline = TRUE;
2704 else
2705 lf.lfUnderline = FALSE;
2706
2707 if (cf.dwEffects & CFE_BOLD)
2708 lf.lfWeight = FW_BOLD;
2709 else
2710 lf.lfWeight = FW_NORMAL;
2711
2712 wxFont font = wxCreateFontFromLogFont(& lf);
2713 if (font.Ok())
2714 {
2715 style.SetFont(font);
2716 }
2717 style.SetTextColour(wxColour(cf.crTextColor));
2718
2719 #if wxUSE_RICHEDIT2
2720 if ( m_verRichEdit != 1 )
2721 {
2722 // cf.dwMask |= CFM_BACKCOLOR;
2723 style.SetBackgroundColour(wxColour(cf.crBackColor));
2724 }
2725 #endif // wxUSE_RICHEDIT2
2726
2727 // now get the paragraph formatting
2728 PARAFORMAT2 pf;
2729 wxZeroMemory(pf);
2730 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2731 // PARAFORMAT in that case
2732 #if wxUSE_RICHEDIT2
2733 if ( m_verRichEdit == 1 )
2734 {
2735 // this is the only thing the control is going to grok
2736 pf.cbSize = sizeof(PARAFORMAT);
2737 }
2738 else
2739 #endif
2740 {
2741 // PARAFORMAT or PARAFORMAT2
2742 pf.cbSize = sizeof(pf);
2743 }
2744
2745 // do format the selection
2746 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2747
2748 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2749 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2750
2751 if (pf.wAlignment == PFA_CENTER)
2752 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2753 else if (pf.wAlignment == PFA_RIGHT)
2754 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2755 else if (pf.wAlignment == PFA_JUSTIFY)
2756 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2757 else
2758 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2759
2760 wxArrayInt tabStops;
2761 size_t i;
2762 for (i = 0; i < (size_t) pf.cTabCount; i++)
2763 {
2764 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2765 }
2766
2767 if ( changeSel )
2768 {
2769 // restore the original selection
2770 DoSetSelection(startOld, endOld, false);
2771 }
2772
2773 return true;
2774 }
2775
2776 #endif
2777
2778 // ----------------------------------------------------------------------------
2779 // wxRichEditModule
2780 // ----------------------------------------------------------------------------
2781
2782 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2783
2784 bool wxRichEditModule::OnInit()
2785 {
2786 // don't do anything - we will load it when needed
2787 return true;
2788 }
2789
2790 void wxRichEditModule::OnExit()
2791 {
2792 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2793 {
2794 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2795 {
2796 ::FreeLibrary(ms_hRichEdit[i]);
2797 ms_hRichEdit[i] = NULL;
2798 }
2799 }
2800 #if wxUSE_INKEDIT
2801 if (ms_inkEditLib.IsLoaded())
2802 ms_inkEditLib.Unload();
2803 #endif
2804 }
2805
2806 /* static */
2807 bool wxRichEditModule::Load(Version version)
2808 {
2809 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2810 {
2811 // we had already tried to load it and failed
2812 return false;
2813 }
2814
2815 if ( ms_hRichEdit[version] )
2816 {
2817 // we've already got this one
2818 return true;
2819 }
2820
2821 static const wxChar *dllnames[] =
2822 {
2823 _T("riched32"),
2824 _T("riched20"),
2825 _T("msftedit"),
2826 };
2827
2828 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2829 RichEditDllNamesVersionsMismatch );
2830
2831 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2832
2833 if ( !ms_hRichEdit[version] )
2834 {
2835 ms_hRichEdit[version] = INVALID_HINSTANCE;
2836
2837 return false;
2838 }
2839
2840 return true;
2841 }
2842
2843 #if wxUSE_INKEDIT
2844 // load the InkEdit library
2845 bool wxRichEditModule::LoadInkEdit()
2846 {
2847 static wxDynamicLibrary ms_inkEditLib;
2848 static bool ms_inkEditLibLoadAttemped;
2849 if (ms_inkEditLibLoadAttemped)
2850 ms_inkEditLib.IsLoaded();
2851
2852 ms_inkEditLibLoadAttemped = true;
2853
2854 wxLogNull logNull;
2855 return ms_inkEditLib.Load(wxT("inked"));
2856 }
2857 #endif
2858
2859
2860 #endif // wxUSE_RICHEDIT
2861
2862 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)