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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/textctrl.h"
31 #include "wx/settings.h"
32 #include "wx/brush.h"
33 #include "wx/utils.h"
34 #include "wx/intl.h"
35 #include "wx/log.h"
36 #include "wx/app.h"
37 #include "wx/menu.h"
38 #include "wx/math.h"
39 #include "wx/module.h"
40 #include "wx/wxcrtvararg.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 #include "wx/msw/mslu.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 #if wxUSE_INKEDIT
67 #include "wx/dynlib.h"
68 #endif
69
70 // old mingw32 has richedit stuff directly in windows.h and doesn't have
71 // richedit.h at all
72 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
73 #include <richedit.h>
74 #endif
75
76 #endif // wxUSE_RICHEDIT
77
78 #include "wx/msw/missing.h"
79
80 // ----------------------------------------------------------------------------
81 // private classes
82 // ----------------------------------------------------------------------------
83
84 #if wxUSE_RICHEDIT
85
86 // this module initializes RichEdit DLL(s) if needed
87 class wxRichEditModule : public wxModule
88 {
89 public:
90 enum Version
91 {
92 Version_1, // riched32.dll
93 Version_2or3, // both use riched20.dll
94 Version_41, // msftedit.dll (XP SP1 and Windows 2003)
95 Version_Max
96 };
97
98 virtual bool OnInit();
99 virtual void OnExit();
100
101 // load the richedit DLL for the specified version of rich edit
102 static bool Load(Version version);
103
104 #if wxUSE_INKEDIT
105 // load the InkEdit library
106 static bool LoadInkEdit();
107 #endif
108
109 private:
110 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
111 static HINSTANCE ms_hRichEdit[Version_Max];
112
113 #if wxUSE_INKEDIT
114 static wxDynamicLibrary ms_inkEditLib;
115 static bool ms_inkEditLibLoadAttemped;
116 #endif
117
118 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
119 };
120
121 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
122
123 #if wxUSE_INKEDIT
124 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
125 bool wxRichEditModule::ms_inkEditLibLoadAttemped = false;
126 #endif
127
128 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
129
130 #endif // wxUSE_RICHEDIT
131
132 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
133 // necessary) and to reset it back to -1 afterwards
134 class UpdatesCountFilter
135 {
136 public:
137 UpdatesCountFilter(int& count)
138 : m_count(count)
139 {
140 wxASSERT_MSG( m_count == -1 || m_count == -2,
141 _T("wrong initial m_updatesCount value") );
142
143 if (m_count != -2)
144 m_count = 0;
145 //else: we don't want to count how many update events we get as we're going
146 // to ignore all of them
147 }
148
149 ~UpdatesCountFilter()
150 {
151 m_count = -1;
152 }
153
154 // return true if an event has been received
155 bool GotUpdate() const
156 {
157 return m_count == 1;
158 }
159
160 private:
161 int& m_count;
162
163 DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
164 };
165
166 // ----------------------------------------------------------------------------
167 // event tables and other macros
168 // ----------------------------------------------------------------------------
169
170 #if wxUSE_EXTENDED_RTTI
171 WX_DEFINE_FLAGS( wxTextCtrlStyle )
172
173 wxBEGIN_FLAGS( wxTextCtrlStyle )
174 // new style border flags, we put them first to
175 // use them for streaming out
176 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
177 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
178 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
179 wxFLAGS_MEMBER(wxBORDER_RAISED)
180 wxFLAGS_MEMBER(wxBORDER_STATIC)
181 wxFLAGS_MEMBER(wxBORDER_NONE)
182
183 // old style border flags
184 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
185 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
186 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
187 wxFLAGS_MEMBER(wxRAISED_BORDER)
188 wxFLAGS_MEMBER(wxSTATIC_BORDER)
189 wxFLAGS_MEMBER(wxBORDER)
190
191 // standard window styles
192 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
193 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
194 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
195 wxFLAGS_MEMBER(wxWANTS_CHARS)
196 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
197 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
198 wxFLAGS_MEMBER(wxVSCROLL)
199 wxFLAGS_MEMBER(wxHSCROLL)
200
201 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
202 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
203 wxFLAGS_MEMBER(wxTE_MULTILINE)
204 wxFLAGS_MEMBER(wxTE_PASSWORD)
205 wxFLAGS_MEMBER(wxTE_READONLY)
206 wxFLAGS_MEMBER(wxHSCROLL)
207 wxFLAGS_MEMBER(wxTE_RICH)
208 wxFLAGS_MEMBER(wxTE_RICH2)
209 wxFLAGS_MEMBER(wxTE_AUTO_URL)
210 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
211 wxFLAGS_MEMBER(wxTE_LEFT)
212 wxFLAGS_MEMBER(wxTE_CENTRE)
213 wxFLAGS_MEMBER(wxTE_RIGHT)
214 wxFLAGS_MEMBER(wxTE_DONTWRAP)
215 wxFLAGS_MEMBER(wxTE_CHARWRAP)
216 wxFLAGS_MEMBER(wxTE_WORDWRAP)
217
218 wxEND_FLAGS( wxTextCtrlStyle )
219
220 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
221
222 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
223 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
224 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
225
226 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
227 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
228 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
229 wxEND_PROPERTIES_TABLE()
230
231 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
232 wxEND_HANDLERS_TABLE()
233
234 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
235 #else
236 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
237 #endif
238
239
240 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
241 EVT_CHAR(wxTextCtrl::OnChar)
242 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
243
244 #if wxUSE_RICHEDIT
245 EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
246 #endif
247
248 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
249 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
250 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
251 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
252 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
253 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
254 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
255
256 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
257 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
258 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
259 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
260 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
261 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
262 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
263
264 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
265 END_EVENT_TABLE()
266
267 // ============================================================================
268 // implementation
269 // ============================================================================
270
271 // ----------------------------------------------------------------------------
272 // creation
273 // ----------------------------------------------------------------------------
274
275 void wxTextCtrl::Init()
276 {
277 #if wxUSE_RICHEDIT
278 m_verRichEdit = 0;
279 #endif // wxUSE_RICHEDIT
280
281 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
282 m_isInkEdit = 0;
283 #endif
284
285 m_privateContextMenu = NULL;
286 m_updatesCount = -1;
287 m_isNativeCaretShown = true;
288 }
289
290 wxTextCtrl::~wxTextCtrl()
291 {
292 delete m_privateContextMenu;
293 }
294
295 bool wxTextCtrl::Create(wxWindow *parent,
296 wxWindowID id,
297 const wxString& value,
298 const wxPoint& pos,
299 const wxSize& size,
300 long style,
301 const wxValidator& validator,
302 const wxString& name)
303 {
304 #ifdef __WXWINCE__
305 if ((style & wxBORDER_MASK) == 0)
306 style |= wxBORDER_SIMPLE;
307 #endif
308
309 // base initialization
310 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
311 return false;
312
313 if ( !MSWCreateText(value, pos, size) )
314 return false;
315
316 return true;
317 }
318
319 bool wxTextCtrl::MSWCreateText(const wxString& value,
320 const wxPoint& pos,
321 const wxSize& size)
322 {
323 // translate wxWin style flags to MSW ones
324 WXDWORD msStyle = MSWGetCreateWindowFlags();
325
326 // do create the control - either an EDIT or RICHEDIT
327 wxString windowClass = wxT("EDIT");
328
329 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
330 // A control that capitalizes the first letter
331 if ( HasFlag(wxTE_CAPITALIZE) )
332 windowClass = wxT("CAPEDIT");
333 #endif
334
335 #if wxUSE_RICHEDIT
336 if ( m_windowStyle & wxTE_AUTO_URL )
337 {
338 // automatic URL detection only works in RichEdit 2.0+
339 m_windowStyle |= wxTE_RICH2;
340 }
341
342 if ( m_windowStyle & wxTE_RICH2 )
343 {
344 // using richedit 2.0 implies using wxTE_RICH
345 m_windowStyle |= wxTE_RICH;
346 }
347
348 // we need to load the richedit DLL before creating the rich edit control
349 if ( m_windowStyle & wxTE_RICH )
350 {
351 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
352 // each other but not with version 1.0, so we have separate flags for
353 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
354 // EDIT control), 1 for version 1.0 or 2 for any higher version)
355 //
356 // notice that 1.0 has no Unicode support at all so in Unicode build we
357 // must use another version
358
359 #if wxUSE_UNICODE
360 m_verRichEdit = 2;
361 #else // !wxUSE_UNICODE
362 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
363 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
364
365 #if wxUSE_INKEDIT
366 // First test if we can load an ink edit control. Normally, all edit
367 // controls will be made ink edit controls if a tablet environment is
368 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
369 // However, an application can veto ink edit controls by either specifying
370 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
371 //
372 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
373 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
374 {
375 if (wxRichEditModule::LoadInkEdit())
376 {
377 windowClass = INKEDIT_CLASS;
378
379 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
380 m_isInkEdit = 1;
381 #endif
382
383 // Fake rich text version for other calls
384 m_verRichEdit = 2;
385 }
386 }
387 #endif
388
389 if (!IsInkEdit())
390 {
391 if ( m_verRichEdit == 2 )
392 {
393 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
394 {
395 // yes, class name for version 4.1 really is 5.0
396 windowClass = _T("RICHEDIT50W");
397 }
398 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
399 {
400 windowClass = _T("RichEdit20")
401 #if wxUSE_UNICODE
402 _T("W");
403 #else // ANSI
404 _T("A");
405 #endif // Unicode/ANSI
406 }
407 else // failed to load msftedit.dll and riched20.dll
408 {
409 m_verRichEdit = 1;
410 }
411 }
412
413 if ( m_verRichEdit == 1 )
414 {
415 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
416 {
417 windowClass = _T("RICHEDIT");
418 }
419 else // failed to load any richedit control DLL
420 {
421 // only give the error msg once if the DLL can't be loaded
422 static bool s_errorGiven = false; // MT ok as only used by GUI
423
424 if ( !s_errorGiven )
425 {
426 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
427
428 s_errorGiven = true;
429 }
430
431 m_verRichEdit = 0;
432 }
433 }
434 } // !useInkEdit
435 }
436 #endif // wxUSE_RICHEDIT
437
438 // we need to turn '\n's into "\r\n"s for the multiline controls
439 wxString valueWin;
440 if ( m_windowStyle & wxTE_MULTILINE )
441 {
442 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
443 }
444 else // single line
445 {
446 valueWin = value;
447 }
448
449 if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
450 return false;
451
452 #if wxUSE_RICHEDIT
453 if (IsRich())
454 {
455 #if wxUSE_INKEDIT
456 if (IsInkEdit())
457 {
458 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
459 // converted to text.
460 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
461
462 // Make sure the mouse can be used for input
463 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
464 }
465 #endif
466
467 // enable the events we're interested in: we want to get EN_CHANGE as
468 // for the normal controls
469 LPARAM mask = ENM_CHANGE;
470
471 if (GetRichVersion() == 1 && !IsInkEdit())
472 {
473 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
474 // explained in its handler
475 mask |= ENM_MOUSEEVENTS;
476
477 // we also need to force the appearance of the vertical scrollbar
478 // initially as otherwise the control doesn't refresh correctly
479 // after resize: but once the vertical scrollbar had been shown
480 // (even if it's subsequently hidden) it does
481 //
482 // this is clearly a bug and for now it has been only noticed under
483 // Windows XP, so if we're sure it works correctly under other
484 // systems we could do this only for XP
485 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
486 SetInitialSize(size);
487 }
488 else if ( m_windowStyle & wxTE_AUTO_URL )
489 {
490 mask |= ENM_LINK;
491
492 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
493 }
494
495 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
496 }
497 #endif // wxUSE_RICHEDIT
498
499 return true;
500 }
501
502 // Make sure the window style (etc.) reflects the HWND style (roughly)
503 void wxTextCtrl::AdoptAttributesFromHWND()
504 {
505 wxWindow::AdoptAttributesFromHWND();
506
507 HWND hWnd = GetHwnd();
508 long style = ::GetWindowLong(hWnd, GWL_STYLE);
509
510 // retrieve the style to see whether this is an edit or richedit ctrl
511 #if wxUSE_RICHEDIT
512 wxString classname = wxGetWindowClass(GetHWND());
513
514 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
515 {
516 m_verRichEdit = 0;
517 }
518 else // rich edit?
519 {
520 wxChar c;
521 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
522 {
523 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
524
525 m_verRichEdit = 0;
526 }
527 }
528 #endif // wxUSE_RICHEDIT
529
530 if (style & ES_MULTILINE)
531 m_windowStyle |= wxTE_MULTILINE;
532 if (style & ES_PASSWORD)
533 m_windowStyle |= wxTE_PASSWORD;
534 if (style & ES_READONLY)
535 m_windowStyle |= wxTE_READONLY;
536 if (style & ES_WANTRETURN)
537 m_windowStyle |= wxTE_PROCESS_ENTER;
538 if (style & ES_CENTER)
539 m_windowStyle |= wxTE_CENTRE;
540 if (style & ES_RIGHT)
541 m_windowStyle |= wxTE_RIGHT;
542 }
543
544 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
545 {
546 long msStyle = wxControl::MSWGetStyle(style, exstyle);
547
548 // styles which we alaways add by default
549 if ( style & wxTE_MULTILINE )
550 {
551 msStyle |= ES_MULTILINE | ES_WANTRETURN;
552 if ( !(style & wxTE_NO_VSCROLL) )
553 {
554 // always adjust the vertical scrollbar automatically if we have it
555 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
556
557 #if wxUSE_RICHEDIT
558 // we have to use this style for the rich edit controls because
559 // without it the vertical scrollbar never appears at all in
560 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
561 if ( style & wxTE_RICH2 )
562 {
563 msStyle |= ES_DISABLENOSCROLL;
564 }
565 #endif // wxUSE_RICHEDIT
566 }
567
568 style |= wxTE_PROCESS_ENTER;
569 }
570 else // !multiline
571 {
572 // there is really no reason to not have this style for single line
573 // text controls
574 msStyle |= ES_AUTOHSCROLL;
575 }
576
577 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
578 // scrollbar, there is no wrapping -- which makes sense
579 if ( style & wxTE_DONTWRAP )
580 {
581 // automatically scroll the control horizontally as necessary
582 //
583 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
584 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
585 // it doesn't seem to do any harm for plain edit controls, add it
586 // always
587 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
588 }
589
590 if ( style & wxTE_READONLY )
591 msStyle |= ES_READONLY;
592
593 if ( style & wxTE_PASSWORD )
594 msStyle |= ES_PASSWORD;
595
596 if ( style & wxTE_NOHIDESEL )
597 msStyle |= ES_NOHIDESEL;
598
599 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
600 if ( style & wxTE_CENTRE )
601 msStyle |= ES_CENTER;
602 else if ( style & wxTE_RIGHT )
603 msStyle |= ES_RIGHT;
604 else
605 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
606
607 return msStyle;
608 }
609
610 void wxTextCtrl::SetWindowStyleFlag(long style)
611 {
612 // changing the alignment of the control dynamically works under Win2003
613 // (but not older Windows version: it seems to work under some versions of
614 // XP but not other ones, and we have no way to determine it so be
615 // conservative here) and only for plain EDIT controls (not RICH ones) and
616 // we have to recreate the control to make it always work
617 if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
618 {
619 const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
620 if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
621 {
622 const wxString value = GetValue();
623 const wxPoint pos = GetPosition();
624 const wxSize size = GetSize();
625
626 // delete the old window
627 HWND hwnd = GetHwnd();
628 DissociateHandle();
629 ::DestroyWindow(hwnd);
630
631 // create the new one with the updated flags
632 m_windowStyle = style;
633 MSWCreateText(value, pos, size);
634
635 // and make sure it has the same attributes as before
636 if ( m_hasFont )
637 {
638 // calling SetFont(m_font) would do nothing as the code would
639 // notice that the font didn't change, so force it to believe
640 // that it did
641 wxFont font = m_font;
642 m_font = wxNullFont;
643 SetFont(font);
644 }
645
646 if ( m_hasFgCol )
647 {
648 wxColour colFg = m_foregroundColour;
649 m_foregroundColour = wxNullColour;
650 SetForegroundColour(colFg);
651 }
652
653 if ( m_hasBgCol )
654 {
655 wxColour colBg = m_backgroundColour;
656 m_backgroundColour = wxNullColour;
657 SetBackgroundColour(colBg);
658 }
659
660 // note that text styles are lost but this is probably not a big
661 // problem: if you use styles, you probably don't use nor change
662 // alignment flags anyhow
663
664 return;
665 }
666 }
667
668 #if wxUSE_RICHEDIT
669 // we have to deal with some styles separately because they can't be
670 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
671 // using richedit-specific EM_SETOPTIONS
672 if ( IsRich() &&
673 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
674 {
675 bool set = (style & wxTE_NOHIDESEL) != 0;
676
677 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
678 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
679 }
680 #endif // wxUSE_RICHEDIT
681
682 wxControl::SetWindowStyleFlag(style);
683 }
684
685 // ----------------------------------------------------------------------------
686 // set/get the controls text
687 // ----------------------------------------------------------------------------
688
689 bool wxTextCtrl::IsEmpty() const
690 {
691 // this is an optimization for multiline controls containing a lot of text
692 if ( IsMultiLine() && GetNumberOfLines() != 1 )
693 return false;
694
695 return wxTextCtrlBase::IsEmpty();
696 }
697
698 wxString wxTextCtrl::GetValue() const
699 {
700 // range 0..-1 is special for GetRange() and means to retrieve all text
701 return GetRange(0, -1);
702 }
703
704 wxString wxTextCtrl::GetRange(long from, long to) const
705 {
706 wxString str;
707
708 if ( from >= to && to != -1 )
709 {
710 // nothing to retrieve
711 return str;
712 }
713
714 #if wxUSE_RICHEDIT
715 if ( IsRich() )
716 {
717 int len = GetWindowTextLength(GetHwnd());
718 if ( len > from )
719 {
720 if ( to == -1 )
721 to = len;
722
723 #if !wxUSE_UNICODE
724 // we must use EM_STREAMOUT if we don't want to lose all characters
725 // not representable in the current character set (EM_GETTEXTRANGE
726 // simply replaces them with question marks...)
727 if ( GetRichVersion() > 1 )
728 {
729 // we must have some encoding, otherwise any 8bit chars in the
730 // control are simply *lost* (replaced by '?')
731 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
732
733 wxFont font = m_defaultStyle.GetFont();
734 if ( !font.Ok() )
735 font = GetFont();
736
737 if ( font.Ok() )
738 {
739 encoding = font.GetEncoding();
740 }
741
742 if ( encoding == wxFONTENCODING_SYSTEM )
743 {
744 encoding = wxLocale::GetSystemEncoding();
745 }
746
747 if ( encoding == wxFONTENCODING_SYSTEM )
748 {
749 encoding = wxFONTENCODING_ISO8859_1;
750 }
751
752 str = StreamOut(encoding);
753
754 if ( !str.empty() )
755 {
756 // we have to manually extract the required part, luckily
757 // this is easy in this case as EOL characters in str are
758 // just LFs because we remove CRs in wxRichEditStreamOut
759 str = str.Mid(from, to - from);
760 }
761 }
762
763 // StreamOut() wasn't used or failed, try to do it in normal way
764 if ( str.empty() )
765 #endif // !wxUSE_UNICODE
766 {
767 // alloc one extra WORD as needed by the control
768 wxStringBuffer tmp(str, ++len);
769 wxChar *p = tmp;
770
771 TEXTRANGE textRange;
772 textRange.chrg.cpMin = from;
773 textRange.chrg.cpMax = to;
774 textRange.lpstrText = p;
775
776 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
777 0, (LPARAM)&textRange);
778
779 if ( m_verRichEdit > 1 )
780 {
781 // RichEdit 2.0 uses just CR ('\r') for the
782 // newlines which is neither Unix nor Windows
783 // style - convert it to something reasonable
784 for ( ; *p; p++ )
785 {
786 if ( *p == _T('\r') )
787 *p = _T('\n');
788 }
789 }
790 }
791
792 if ( m_verRichEdit == 1 )
793 {
794 // convert to the canonical form - see comment below
795 str = wxTextFile::Translate(str, wxTextFileType_Unix);
796 }
797 }
798 //else: no text at all, leave the string empty
799 }
800 else
801 #endif // wxUSE_RICHEDIT
802 {
803 // retrieve all text
804 str = wxGetWindowText(GetHWND());
805
806 // need only a range?
807 if ( from < to )
808 {
809 str = str.Mid(from, to - from);
810 }
811
812 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
813 // canonical one (same one as above) for consistency with the other kinds
814 // of controls and, more importantly, with the other ports
815 str = wxTextFile::Translate(str, wxTextFileType_Unix);
816 }
817
818 return str;
819 }
820
821 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
822 {
823 // if the text is long enough, it's faster to just set it instead of first
824 // comparing it with the old one (chances are that it will be different
825 // anyhow, this comparison is there to avoid flicker for small single-line
826 // edit controls mostly)
827 if ( (value.length() > 0x400) || (value != GetValue()) )
828 {
829 DoWriteText(value, flags /* doesn't include SelectionOnly here */);
830
831 // mark the control as being not dirty - we changed its text, not the
832 // user
833 DiscardEdits();
834
835 // for compatibility, don't move the cursor when doing SetValue()
836 SetInsertionPoint(0);
837 }
838 else // same text
839 {
840 // still reset the modified flag even if the value didn't really change
841 // because now it comes from the program and not the user (and do it
842 // before generating the event so that the event handler could get the
843 // expected value from IsModified())
844 DiscardEdits();
845
846 // still send an event for consistency
847 if (flags & SetValue_SendEvent)
848 SendUpdateEvent();
849 }
850 }
851
852 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
853
854 // TODO: using memcpy() would improve performance a lot for big amounts of text
855
856 DWORD CALLBACK
857 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
858 {
859 *pcb = 0;
860
861 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
862
863 wchar_t *wbuf = (wchar_t *)buf;
864 const wchar_t *wpc = *ppws;
865 while ( cb && *wpc )
866 {
867 *wbuf++ = *wpc++;
868
869 cb -= sizeof(wchar_t);
870 (*pcb) += sizeof(wchar_t);
871 }
872
873 *ppws = wpc;
874
875 return 0;
876 }
877
878 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
879 struct wxStreamOutData
880 {
881 wchar_t *wpc;
882 size_t len;
883 };
884
885 DWORD CALLBACK
886 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
887 {
888 *pcb = 0;
889
890 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
891
892 const wchar_t *wbuf = (const wchar_t *)buf;
893 wchar_t *wpc = data->wpc;
894 while ( cb )
895 {
896 wchar_t wch = *wbuf++;
897
898 // turn "\r\n" into "\n" on the fly
899 if ( wch != L'\r' )
900 *wpc++ = wch;
901 else
902 data->len--;
903
904 cb -= sizeof(wchar_t);
905 (*pcb) += sizeof(wchar_t);
906 }
907
908 data->wpc = wpc;
909
910 return 0;
911 }
912
913
914 #if wxUSE_UNICODE_MSLU
915 #define UNUSED_IF_MSLU(param)
916 #else
917 #define UNUSED_IF_MSLU(param) param
918 #endif
919
920 bool
921 wxTextCtrl::StreamIn(const wxString& value,
922 wxFontEncoding UNUSED_IF_MSLU(encoding),
923 bool selectionOnly)
924 {
925 #if wxUSE_UNICODE_MSLU
926 const wchar_t *wpc = value.c_str();
927 #else // !wxUSE_UNICODE_MSLU
928 wxCSConv conv(encoding);
929
930 const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
931
932 #if wxUSE_WCHAR_T
933 wxWCharBuffer wchBuf(len);
934 wchar_t *wpc = wchBuf.data();
935 #else
936 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
937 wchar_t *wpc = wchBuf;
938 #endif
939
940 conv.MB2WC(wpc, value.mb_str(), value.length());
941 #endif // wxUSE_UNICODE_MSLU
942
943 // finally, stream it in the control
944 EDITSTREAM eds;
945 wxZeroMemory(eds);
946 eds.dwCookie = (DWORD)&wpc;
947 // the cast below is needed for broken (very) old mingw32 headers
948 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
949
950 // same problem as in DoWriteText(): we can get multiple events here
951 UpdatesCountFilter ucf(m_updatesCount);
952
953 ::SendMessage(GetHwnd(), EM_STREAMIN,
954 SF_TEXT |
955 SF_UNICODE |
956 (selectionOnly ? SFF_SELECTION : 0),
957 (LPARAM)&eds);
958
959 // It's okay for EN_UPDATE to not be sent if the selection is empty and
960 // the text is empty, otherwise warn the programmer about it.
961 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
962 _T("EM_STREAMIN didn't send EN_UPDATE?") );
963
964 if ( eds.dwError )
965 {
966 wxLogLastError(_T("EM_STREAMIN"));
967 }
968
969 #if !wxUSE_WCHAR_T
970 free(wchBuf);
971 #endif // !wxUSE_WCHAR_T
972
973 return true;
974 }
975
976 #if !wxUSE_UNICODE_MSLU
977
978 wxString
979 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
980 {
981 wxString out;
982
983 const int len = GetWindowTextLength(GetHwnd());
984
985 #if wxUSE_WCHAR_T
986 wxWCharBuffer wchBuf(len);
987 wchar_t *wpc = wchBuf.data();
988 #else
989 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
990 wchar_t *wpc = wchBuf;
991 #endif
992
993 wxStreamOutData data;
994 data.wpc = wpc;
995 data.len = len;
996
997 EDITSTREAM eds;
998 wxZeroMemory(eds);
999 eds.dwCookie = (DWORD)&data;
1000 eds.pfnCallback = wxRichEditStreamOut;
1001
1002 ::SendMessage
1003 (
1004 GetHwnd(),
1005 EM_STREAMOUT,
1006 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1007 (LPARAM)&eds
1008 );
1009
1010 if ( eds.dwError )
1011 {
1012 wxLogLastError(_T("EM_STREAMOUT"));
1013 }
1014 else // streamed out ok
1015 {
1016 // NUL-terminate the string because its length could have been
1017 // decreased by wxRichEditStreamOut
1018 *(wchBuf.data() + data.len) = L'\0';
1019
1020 // now convert to the given encoding (this is a possibly lossful
1021 // conversion but what else can we do)
1022 wxCSConv conv(encoding);
1023 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1024 if ( lenNeeded++ )
1025 {
1026 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1027 }
1028 }
1029
1030 #if !wxUSE_WCHAR_T
1031 free(wchBuf);
1032 #endif // !wxUSE_WCHAR_T
1033
1034 return out;
1035 }
1036
1037 #endif // !wxUSE_UNICODE_MSLU
1038
1039 #endif // wxUSE_RICHEDIT
1040
1041 void wxTextCtrl::WriteText(const wxString& value)
1042 {
1043 DoWriteText(value);
1044 }
1045
1046 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1047 {
1048 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1049 wxString valueDos;
1050 if ( m_windowStyle & wxTE_MULTILINE )
1051 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1052 else
1053 valueDos = value;
1054
1055 #if wxUSE_RICHEDIT
1056 // there are several complications with the rich edit controls here
1057 bool done = false;
1058 if ( IsRich() )
1059 {
1060 // first, ensure that the new text will be in the default style
1061 if ( !m_defaultStyle.IsDefault() )
1062 {
1063 long start, end;
1064 GetSelection(&start, &end);
1065 SetStyle(start, end, m_defaultStyle);
1066 }
1067
1068 #if wxUSE_UNICODE_MSLU
1069 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1070 // but EM_STREAMIN works
1071 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1072 {
1073 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1074 }
1075 #endif // wxUSE_UNICODE_MSLU
1076
1077 #if !wxUSE_UNICODE
1078 // next check if the text we're inserting must be shown in a non
1079 // default charset -- this only works for RichEdit > 1.0
1080 if ( GetRichVersion() > 1 )
1081 {
1082 wxFont font = m_defaultStyle.GetFont();
1083 if ( !font.Ok() )
1084 font = GetFont();
1085
1086 if ( font.Ok() )
1087 {
1088 wxFontEncoding encoding = font.GetEncoding();
1089 if ( encoding != wxFONTENCODING_SYSTEM )
1090 {
1091 // we have to use EM_STREAMIN to force richedit control 2.0+
1092 // to show any text in the non default charset -- otherwise
1093 // it thinks it knows better than we do and always shows it
1094 // in the default one
1095 done = StreamIn(valueDos, encoding, selectionOnly);
1096 }
1097 }
1098 }
1099 #endif // !wxUSE_UNICODE
1100 }
1101
1102 if ( !done )
1103 #endif // wxUSE_RICHEDIT
1104 {
1105 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1106 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1107 // -- undetermined -- conditions with rich edit) and sometimes we don't
1108 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1109 // we generate exactly one of them by ignoring all but the first one in
1110 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1111 // notifications from Windows
1112 if ( !(flags & SetValue_SendEvent) )
1113 m_updatesCount = -2; // suppress any update event
1114
1115 UpdatesCountFilter ucf(m_updatesCount);
1116
1117 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1118 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1119 selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1120
1121 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1122 {
1123 SendUpdateEvent();
1124 }
1125 }
1126 }
1127
1128 void wxTextCtrl::AppendText(const wxString& text)
1129 {
1130 SetInsertionPointEnd();
1131
1132 WriteText(text);
1133
1134 #if wxUSE_RICHEDIT
1135 // don't do this if we're frozen, saves some time
1136 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1137 {
1138 // setting the caret to the end and showing it simply doesn't work for
1139 // RichEdit 2.0 -- force it to still do what we want
1140 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1141 }
1142 #endif // wxUSE_RICHEDIT
1143 }
1144
1145 void wxTextCtrl::Clear()
1146 {
1147 ::SetWindowText(GetHwnd(), wxEmptyString);
1148
1149 #if wxUSE_RICHEDIT
1150 if ( !IsRich() )
1151 #endif // wxUSE_RICHEDIT
1152 {
1153 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1154 // but the normal ones don't -- make Clear() behaviour consistent by
1155 // always sending this event
1156
1157 // Windows already sends an update event for single-line
1158 // controls.
1159 if ( m_windowStyle & wxTE_MULTILINE )
1160 SendUpdateEvent();
1161 }
1162 }
1163
1164 #ifdef __WIN32__
1165
1166 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1167 {
1168 SetFocus();
1169
1170 size_t lenOld = GetValue().length();
1171
1172 wxUint32 code = event.GetRawKeyCode();
1173 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1174 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1175
1176 // assume that any alphanumeric key changes the total number of characters
1177 // in the control - this should work in 99% of cases
1178 return GetValue().length() != lenOld;
1179 }
1180
1181 #endif // __WIN32__
1182
1183 // ----------------------------------------------------------------------------
1184 // Clipboard operations
1185 // ----------------------------------------------------------------------------
1186
1187 void wxTextCtrl::Copy()
1188 {
1189 if (CanCopy())
1190 {
1191 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1192 }
1193 }
1194
1195 void wxTextCtrl::Cut()
1196 {
1197 if (CanCut())
1198 {
1199 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1200 }
1201 }
1202
1203 void wxTextCtrl::Paste()
1204 {
1205 if (CanPaste())
1206 {
1207 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1208 }
1209 }
1210
1211 bool wxTextCtrl::HasSelection() const
1212 {
1213 long from, to;
1214 GetSelection(&from, &to);
1215 return from != to;
1216 }
1217
1218 bool wxTextCtrl::CanCopy() const
1219 {
1220 // Can copy if there's a selection
1221 return HasSelection();
1222 }
1223
1224 bool wxTextCtrl::CanCut() const
1225 {
1226 return CanCopy() && IsEditable();
1227 }
1228
1229 bool wxTextCtrl::CanPaste() const
1230 {
1231 if ( !IsEditable() )
1232 return false;
1233
1234 #if wxUSE_RICHEDIT
1235 if ( IsRich() )
1236 {
1237 UINT cf = 0; // 0 == any format
1238
1239 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1240 }
1241 #endif // wxUSE_RICHEDIT
1242
1243 // Standard edit control: check for straight text on clipboard
1244 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1245 return false;
1246
1247 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1248 ::CloseClipboard();
1249
1250 return isTextAvailable;
1251 }
1252
1253 // ----------------------------------------------------------------------------
1254 // Accessors
1255 // ----------------------------------------------------------------------------
1256
1257 void wxTextCtrl::SetEditable(bool editable)
1258 {
1259 HWND hWnd = GetHwnd();
1260 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1261 }
1262
1263 void wxTextCtrl::SetInsertionPoint(long pos)
1264 {
1265 DoSetSelection(pos, pos);
1266 }
1267
1268 void wxTextCtrl::SetInsertionPointEnd()
1269 {
1270 // we must not do anything if the caret is already there because calling
1271 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1272 // if it doesn't actually move the caret anywhere and so the simple fact of
1273 // doing it results in horrible flicker when appending big amounts of text
1274 // to the control in a few chunks (see DoAddText() test in the text sample)
1275 const wxTextPos lastPosition = GetLastPosition();
1276 if ( GetInsertionPoint() == lastPosition )
1277 {
1278 return;
1279 }
1280
1281 long pos;
1282
1283 #if wxUSE_RICHEDIT
1284 if ( m_verRichEdit == 1 )
1285 {
1286 // we don't have to waste time calling GetLastPosition() in this case
1287 pos = -1;
1288 }
1289 else // !RichEdit 1.0
1290 #endif // wxUSE_RICHEDIT
1291 {
1292 pos = lastPosition;
1293 }
1294
1295 SetInsertionPoint(pos);
1296 }
1297
1298 long wxTextCtrl::GetInsertionPoint() const
1299 {
1300 #if wxUSE_RICHEDIT
1301 if ( IsRich() )
1302 {
1303 CHARRANGE range;
1304 range.cpMin = 0;
1305 range.cpMax = 0;
1306 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1307 return range.cpMin;
1308 }
1309 #endif // wxUSE_RICHEDIT
1310
1311 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1312 return Pos & 0xFFFF;
1313 }
1314
1315 wxTextPos wxTextCtrl::GetLastPosition() const
1316 {
1317 int numLines = GetNumberOfLines();
1318 long posStartLastLine = XYToPosition(0, numLines - 1);
1319
1320 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1321
1322 return posStartLastLine + lenLastLine;
1323 }
1324
1325 // If the return values from and to are the same, there is no
1326 // selection.
1327 void wxTextCtrl::GetSelection(long* from, long* to) const
1328 {
1329 #if wxUSE_RICHEDIT
1330 if ( IsRich() )
1331 {
1332 CHARRANGE charRange;
1333 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1334
1335 *from = charRange.cpMin;
1336 *to = charRange.cpMax;
1337 }
1338 else
1339 #endif // !wxUSE_RICHEDIT
1340 {
1341 DWORD dwStart, dwEnd;
1342 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1343
1344 *from = dwStart;
1345 *to = dwEnd;
1346 }
1347 }
1348
1349 bool wxTextCtrl::IsEditable() const
1350 {
1351 // strangely enough, we may be called before the control is created: our
1352 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1353 // us
1354 if ( !m_hWnd )
1355 return true;
1356
1357 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1358
1359 return (style & ES_READONLY) == 0;
1360 }
1361
1362 // ----------------------------------------------------------------------------
1363 // selection
1364 // ----------------------------------------------------------------------------
1365
1366 void wxTextCtrl::SetSelection(long from, long to)
1367 {
1368 // if from and to are both -1, it means (in wxWidgets) that all text should
1369 // be selected - translate into Windows convention
1370 if ( (from == -1) && (to == -1) )
1371 {
1372 from = 0;
1373 to = -1;
1374 }
1375
1376 DoSetSelection(from, to);
1377 }
1378
1379 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1380 {
1381 HWND hWnd = GetHwnd();
1382
1383 #if wxUSE_RICHEDIT
1384 if ( IsRich() )
1385 {
1386 CHARRANGE range;
1387 range.cpMin = from;
1388 range.cpMax = to;
1389 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1390 }
1391 else
1392 #endif // wxUSE_RICHEDIT
1393 {
1394 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1395 }
1396
1397 if ( scrollCaret && !IsFrozen() )
1398 {
1399 #if wxUSE_RICHEDIT
1400 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1401 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1402 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1403 // option is set (but it does work ok in richedit 1.0 mode...)
1404 //
1405 // so to make it work we either need to give focus to it here which
1406 // will probably create many problems (dummy focus events; window
1407 // containing the text control being brought to foreground
1408 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1409 // create other problems too -- and in fact it does because if we turn
1410 // on/off this style while appending the text to the control, the
1411 // vertical scrollbar never appears in it even if we append tons of
1412 // text and to work around this the only solution I found was to use
1413 // ES_DISABLENOSCROLL
1414 //
1415 // this is very ugly but I don't see any other way to make this work
1416 long style = 0;
1417 if ( GetRichVersion() > 1 )
1418 {
1419 if ( !HasFlag(wxTE_NOHIDESEL) )
1420 {
1421 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1422 // others, remember the style so we can reset it later if needed
1423 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1424 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1425 ECOOP_OR, ECO_NOHIDESEL);
1426 }
1427 //else: everything is already ok
1428 }
1429 #endif // wxUSE_RICHEDIT
1430
1431 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1432
1433 #if wxUSE_RICHEDIT
1434 // restore ECO_NOHIDESEL if we changed it
1435 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1436 {
1437 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1438 ECOOP_AND, ~ECO_NOHIDESEL);
1439 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1440 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1441 }
1442 #endif // wxUSE_RICHEDIT
1443 }
1444 }
1445
1446 // ----------------------------------------------------------------------------
1447 // Working with files
1448 // ----------------------------------------------------------------------------
1449
1450 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1451 {
1452 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1453 {
1454 // update the size limit if needed
1455 AdjustSpaceLimit();
1456
1457 return true;
1458 }
1459
1460 return false;
1461 }
1462
1463 // ----------------------------------------------------------------------------
1464 // Editing
1465 // ----------------------------------------------------------------------------
1466
1467 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1468 {
1469 // Set selection and remove it
1470 DoSetSelection(from, to, false /* don't scroll caret into view */);
1471
1472 DoWriteText(value);
1473 }
1474
1475 void wxTextCtrl::Remove(long from, long to)
1476 {
1477 Replace(from, to, wxEmptyString);
1478 }
1479
1480 bool wxTextCtrl::IsModified() const
1481 {
1482 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1483 }
1484
1485 void wxTextCtrl::MarkDirty()
1486 {
1487 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1488 }
1489
1490 void wxTextCtrl::DiscardEdits()
1491 {
1492 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1493 }
1494
1495 int wxTextCtrl::GetNumberOfLines() const
1496 {
1497 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1498 }
1499
1500 // ----------------------------------------------------------------------------
1501 // Positions <-> coords
1502 // ----------------------------------------------------------------------------
1503
1504 long wxTextCtrl::XYToPosition(long x, long y) const
1505 {
1506 // This gets the char index for the _beginning_ of this line
1507 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1508
1509 return charIndex + x;
1510 }
1511
1512 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1513 {
1514 HWND hWnd = GetHwnd();
1515
1516 // This gets the line number containing the character
1517 long lineNo;
1518 #if wxUSE_RICHEDIT
1519 if ( IsRich() )
1520 {
1521 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1522 }
1523 else
1524 #endif // wxUSE_RICHEDIT
1525 {
1526 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1527 }
1528
1529 if ( lineNo == -1 )
1530 {
1531 // no such line
1532 return false;
1533 }
1534
1535 // This gets the char index for the _beginning_ of this line
1536 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1537 if ( charIndex == -1 )
1538 {
1539 return false;
1540 }
1541
1542 // The X position must therefore be the different between pos and charIndex
1543 if ( x )
1544 *x = pos - charIndex;
1545 if ( y )
1546 *y = lineNo;
1547
1548 return true;
1549 }
1550
1551 wxTextCtrlHitTestResult
1552 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1553 {
1554 // first get the position from Windows
1555 LPARAM lParam;
1556
1557 #if wxUSE_RICHEDIT
1558 POINTL ptl;
1559 if ( IsRich() )
1560 {
1561 // for rich edit controls the position is passed iva the struct fields
1562 ptl.x = pt.x;
1563 ptl.y = pt.y;
1564 lParam = (LPARAM)&ptl;
1565 }
1566 else
1567 #endif // wxUSE_RICHEDIT
1568 {
1569 // for the plain ones, we are limited to 16 bit positions which are
1570 // combined in a single 32 bit value
1571 lParam = MAKELPARAM(pt.x, pt.y);
1572 }
1573
1574 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1575
1576 if ( pos == -1 )
1577 {
1578 // this seems to indicate an error...
1579 return wxTE_HT_UNKNOWN;
1580 }
1581
1582 #if wxUSE_RICHEDIT
1583 if ( !IsRich() )
1584 #endif // wxUSE_RICHEDIT
1585 {
1586 // for plain EDIT controls the higher word contains something else
1587 pos = LOWORD(pos);
1588 }
1589
1590
1591 // next determine where it is relatively to our point: EM_CHARFROMPOS
1592 // always returns the closest character but we need to be more precise, so
1593 // double check that we really are where it pretends
1594 POINTL ptReal;
1595
1596 #if wxUSE_RICHEDIT
1597 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1598 // we don't know how to do it
1599 if ( IsRich() )
1600 {
1601 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1602 }
1603 else
1604 #endif // wxUSE_RICHEDIT
1605 {
1606 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1607
1608 if ( lRc == -1 )
1609 {
1610 // this is apparently returned when pos corresponds to the last
1611 // position
1612 ptReal.x =
1613 ptReal.y = 0;
1614 }
1615 else
1616 {
1617 ptReal.x = LOWORD(lRc);
1618 ptReal.y = HIWORD(lRc);
1619 }
1620 }
1621
1622 wxTextCtrlHitTestResult rc;
1623
1624 if ( pt.y > ptReal.y + GetCharHeight() )
1625 rc = wxTE_HT_BELOW;
1626 else if ( pt.x > ptReal.x + GetCharWidth() )
1627 rc = wxTE_HT_BEYOND;
1628 else
1629 rc = wxTE_HT_ON_TEXT;
1630
1631 if ( posOut )
1632 *posOut = pos;
1633
1634 return rc;
1635 }
1636
1637 // ----------------------------------------------------------------------------
1638 //
1639 // ----------------------------------------------------------------------------
1640
1641 void wxTextCtrl::ShowPosition(long pos)
1642 {
1643 HWND hWnd = GetHwnd();
1644
1645 // To scroll to a position, we pass the number of lines and characters
1646 // to scroll *by*. This means that we need to:
1647 // (1) Find the line position of the current line.
1648 // (2) Find the line position of pos.
1649 // (3) Scroll by (pos - current).
1650 // For now, ignore the horizontal scrolling.
1651
1652 // Is this where scrolling is relative to - the line containing the caret?
1653 // Or is the first visible line??? Try first visible line.
1654 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1655
1656 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1657
1658 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1659
1660 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1661
1662 if (linesToScroll != 0)
1663 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1664 }
1665
1666 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1667 {
1668 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1669 }
1670
1671 int wxTextCtrl::GetLineLength(long lineNo) const
1672 {
1673 long pos = XYToPosition(0, lineNo);
1674
1675 return GetLengthOfLineContainingPos(pos);
1676 }
1677
1678 wxString wxTextCtrl::GetLineText(long lineNo) const
1679 {
1680 size_t len = (size_t)GetLineLength(lineNo) + 1;
1681
1682 // there must be at least enough place for the length WORD in the
1683 // buffer
1684 len += sizeof(WORD);
1685
1686 wxString str;
1687 {
1688 wxStringBufferLength tmp(str, len);
1689 wxChar *buf = tmp;
1690
1691 *(WORD *)buf = (WORD)len;
1692 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1693
1694 #if wxUSE_RICHEDIT
1695 if ( IsRich() )
1696 {
1697 // remove the '\r' returned by the rich edit control, the user code
1698 // should never see it
1699 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1700 {
1701 buf[len - 2] = _T('\n');
1702 len--;
1703 }
1704 }
1705 #endif // wxUSE_RICHEDIT
1706
1707 // remove the '\n' at the end, if any (this is how this function is
1708 // supposed to work according to the docs)
1709 if ( buf[len - 1] == _T('\n') )
1710 {
1711 len--;
1712 }
1713
1714 buf[len] = 0;
1715 tmp.SetLength(len);
1716 }
1717
1718 return str;
1719 }
1720
1721 void wxTextCtrl::SetMaxLength(unsigned long len)
1722 {
1723 #if wxUSE_RICHEDIT
1724 if ( IsRich() )
1725 {
1726 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1727 }
1728 else
1729 #endif // wxUSE_RICHEDIT
1730 {
1731 if ( len >= 0xffff )
1732 {
1733 // this will set it to a platform-dependent maximum (much more
1734 // than 64Kb under NT)
1735 len = 0;
1736 }
1737
1738 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1739 }
1740 }
1741
1742 // ----------------------------------------------------------------------------
1743 // Undo/redo
1744 // ----------------------------------------------------------------------------
1745
1746 void wxTextCtrl::Undo()
1747 {
1748 if (CanUndo())
1749 {
1750 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1751 }
1752 }
1753
1754 void wxTextCtrl::Redo()
1755 {
1756 if (CanRedo())
1757 {
1758 #if wxUSE_RICHEDIT
1759 if (GetRichVersion() > 1)
1760 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1761 else
1762 #endif
1763 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1764 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1765 }
1766 }
1767
1768 bool wxTextCtrl::CanUndo() const
1769 {
1770 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1771 }
1772
1773 bool wxTextCtrl::CanRedo() const
1774 {
1775 #if wxUSE_RICHEDIT
1776 if (GetRichVersion() > 1)
1777 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1778 else
1779 #endif
1780 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1781 }
1782
1783 // ----------------------------------------------------------------------------
1784 // caret handling (Windows only)
1785 // ----------------------------------------------------------------------------
1786
1787 bool wxTextCtrl::ShowNativeCaret(bool show)
1788 {
1789 if ( show != m_isNativeCaretShown )
1790 {
1791 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1792 {
1793 // not an error, may simply indicate that it's not shown/hidden
1794 // yet (i.e. it had been hidden/showh 2 times before)
1795 return false;
1796 }
1797
1798 m_isNativeCaretShown = show;
1799 }
1800
1801 return true;
1802 }
1803
1804 // ----------------------------------------------------------------------------
1805 // implemenation details
1806 // ----------------------------------------------------------------------------
1807
1808 void wxTextCtrl::Command(wxCommandEvent & event)
1809 {
1810 SetValue(event.GetString());
1811 ProcessCommand (event);
1812 }
1813
1814 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1815 {
1816 // By default, load the first file into the text window.
1817 if (event.GetNumberOfFiles() > 0)
1818 {
1819 LoadFile(event.GetFiles()[0]);
1820 }
1821 }
1822
1823 // ----------------------------------------------------------------------------
1824 // kbd input processing
1825 // ----------------------------------------------------------------------------
1826
1827 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1828 {
1829 // check for our special keys here: if we don't do it and the parent frame
1830 // uses them as accelerators, they wouldn't work at all, so we disable
1831 // usual preprocessing for them
1832 if ( msg->message == WM_KEYDOWN )
1833 {
1834 const WPARAM vkey = msg->wParam;
1835 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1836 {
1837 // Alt-Backspace is accelerator for "Undo"
1838 if ( vkey == VK_BACK )
1839 return false;
1840 }
1841 else // no Alt
1842 {
1843 // we want to process some Ctrl-foo and Shift-bar but no key
1844 // combinations without either Ctrl or Shift nor with both of them
1845 // pressed
1846 const int ctrl = wxIsCtrlDown(),
1847 shift = wxIsShiftDown();
1848 switch ( ctrl + shift )
1849 {
1850 default:
1851 wxFAIL_MSG( _T("how many modifiers have we got?") );
1852 // fall through
1853
1854 case 0:
1855 if ( IsMultiLine() && vkey == VK_RETURN )
1856 return false;
1857 // fall through
1858 case 2:
1859 break;
1860
1861 case 1:
1862 // either Ctrl or Shift pressed
1863 if ( ctrl )
1864 {
1865 switch ( vkey )
1866 {
1867 case 'C':
1868 case 'V':
1869 case 'X':
1870 case VK_INSERT:
1871 case VK_DELETE:
1872 case VK_HOME:
1873 case VK_END:
1874 return false;
1875 }
1876 }
1877 else // Shift is pressed
1878 {
1879 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1880 return false;
1881 }
1882 }
1883 }
1884 }
1885
1886 return wxControl::MSWShouldPreProcessMessage(msg);
1887 }
1888
1889 void wxTextCtrl::OnChar(wxKeyEvent& event)
1890 {
1891 switch ( event.GetKeyCode() )
1892 {
1893 case WXK_RETURN:
1894 {
1895 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1896 InitCommandEvent(event);
1897 event.SetString(GetValue());
1898 if ( GetEventHandler()->ProcessEvent(event) )
1899 if ( !HasFlag(wxTE_MULTILINE) )
1900 return;
1901 //else: multiline controls need Enter for themselves
1902 }
1903 break;
1904
1905 case WXK_TAB:
1906 // ok, so this is getting absolutely ridiculous but I don't see
1907 // any other way to fix this bug: when a multiline text control is
1908 // inside a wxFrame, we need to generate the navigation event as
1909 // otherwise nothing happens at all, but when the same control is
1910 // created inside a dialog, IsDialogMessage() *does* switch focus
1911 // all by itself and so if we do it here as well, it is advanced
1912 // twice and goes to the next control... to prevent this from
1913 // happening we're doing this ugly check, the logic being that if
1914 // we don't have focus then it had been already changed to the next
1915 // control
1916 //
1917 // the right thing to do would, of course, be to understand what
1918 // the hell is IsDialogMessage() doing but this is beyond my feeble
1919 // forces at the moment unfortunately
1920 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1921 {
1922 if ( FindFocus() == this )
1923 {
1924 int flags = 0;
1925 if (!event.ShiftDown())
1926 flags |= wxNavigationKeyEvent::IsForward ;
1927 if (event.ControlDown())
1928 flags |= wxNavigationKeyEvent::WinChange ;
1929 if (Navigate(flags))
1930 return;
1931 }
1932 }
1933 else
1934 {
1935 // Insert tab since calling the default Windows handler
1936 // doesn't seem to do it
1937 WriteText(wxT("\t"));
1938 return;
1939 }
1940 break;
1941 }
1942
1943 // no, we didn't process it
1944 event.Skip();
1945 }
1946
1947 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1948 {
1949 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1950
1951 switch ( nMsg )
1952 {
1953 case WM_GETDLGCODE:
1954 {
1955 // we always want the chars and the arrows: the arrows for
1956 // navigation and the chars because we want Ctrl-C to work even
1957 // in a read only control
1958 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1959
1960 if ( IsEditable() )
1961 {
1962 // we may have several different cases:
1963 // 1. normal: both TAB and ENTER are used for navigation
1964 // 2. ctrl wants TAB for itself: ENTER is used to pass to
1965 // the next control in the dialog
1966 // 3. ctrl wants ENTER for itself: TAB is used for dialog
1967 // navigation
1968 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
1969 // go to the next control (we need some way to do it)
1970
1971 // multiline controls should always get ENTER for themselves
1972 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1973 lDlgCode |= DLGC_WANTMESSAGE;
1974
1975 if ( HasFlag(wxTE_PROCESS_TAB) )
1976 lDlgCode |= DLGC_WANTTAB;
1977
1978 lRc |= lDlgCode;
1979 }
1980 else // !editable
1981 {
1982 // NB: use "=", not "|=" as the base class version returns
1983 // the same flags is this state as usual (i.e.
1984 // including DLGC_WANTMESSAGE). This is strange (how
1985 // does it work in the native Win32 apps?) but for now
1986 // live with it.
1987 lRc = lDlgCode;
1988 }
1989 }
1990 break;
1991
1992 case WM_CUT:
1993 case WM_COPY:
1994 case WM_PASTE:
1995 if ( HandleClipboardEvent(nMsg) )
1996 lRc = 0;
1997 break;
1998 }
1999
2000 return lRc;
2001 }
2002
2003 // ----------------------------------------------------------------------------
2004 // text control event processing
2005 // ----------------------------------------------------------------------------
2006
2007 bool wxTextCtrl::SendUpdateEvent()
2008 {
2009 switch ( m_updatesCount )
2010 {
2011 case 0:
2012 // remember that we've got an update
2013 m_updatesCount++;
2014 break;
2015
2016 case 1:
2017 // we had already sent one event since the last control modification
2018 return false;
2019
2020 default:
2021 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
2022 // fall through
2023
2024 case -1:
2025 // we hadn't updated the control ourselves, this event comes from
2026 // the user, don't need to ignore it nor update the count
2027 break;
2028
2029 case -2:
2030 // the control was updated programmatically and we do NOT want to
2031 // send events
2032 return false;
2033 }
2034
2035 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
2036 InitCommandEvent(event);
2037
2038 return ProcessCommand(event);
2039 }
2040
2041 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
2042 {
2043 switch ( param )
2044 {
2045 case EN_SETFOCUS:
2046 case EN_KILLFOCUS:
2047 {
2048 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
2049 : wxEVT_SET_FOCUS,
2050 m_windowId);
2051 event.SetEventObject(this);
2052 GetEventHandler()->ProcessEvent(event);
2053 }
2054 break;
2055
2056 case EN_CHANGE:
2057 SendUpdateEvent();
2058 break;
2059
2060 case EN_MAXTEXT:
2061 // the text size limit has been hit -- try to increase it
2062 if ( !AdjustSpaceLimit() )
2063 {
2064 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2065 InitCommandEvent(event);
2066 event.SetString(GetValue());
2067 ProcessCommand(event);
2068 }
2069 break;
2070
2071 // the other edit notification messages are not processed
2072 default:
2073 return false;
2074 }
2075
2076 // processed
2077 return true;
2078 }
2079
2080 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2081 {
2082 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2083 return MSWControlColorDisabled(hDC);
2084
2085 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2086 }
2087
2088 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2089 {
2090 // HACK: we try to automatically extend the limit for the amount of text
2091 // to allow (interactively) entering more than 64Kb of text under
2092 // Win9x but we shouldn't reset the text limit which was previously
2093 // set explicitly with SetMaxLength()
2094 //
2095 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2096 // know the limit we set (if any). We could solve this by storing the
2097 // limit we set in wxTextCtrl but to save space we prefer to simply
2098 // test here the actual limit value: we consider that SetMaxLength()
2099 // can only be called for small values while EN_MAXTEXT is only sent
2100 // for large values (in practice the default limit seems to be 30000
2101 // but make it smaller just to be on the safe side)
2102 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2103 return *len < 10001;
2104
2105 }
2106
2107 bool wxTextCtrl::AdjustSpaceLimit()
2108 {
2109 unsigned int limit;
2110 if ( HasSpaceLimit(&limit) )
2111 return false;
2112
2113 unsigned int len = ::GetWindowTextLength(GetHwnd());
2114 if ( len >= limit )
2115 {
2116 // increment in 32Kb chunks
2117 SetMaxLength(len + 0x8000);
2118 }
2119
2120 // we changed the limit
2121 return true;
2122 }
2123
2124 bool wxTextCtrl::AcceptsFocus() const
2125 {
2126 // we don't want focus if we can't be edited unless we're a multiline
2127 // control because then it might be still nice to get focus from keyboard
2128 // to be able to scroll it without mouse
2129 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2130 }
2131
2132 wxSize wxTextCtrl::DoGetBestSize() const
2133 {
2134 int cx, cy;
2135 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2136
2137 int wText = DEFAULT_ITEM_WIDTH;
2138
2139 int hText = cy;
2140 if ( m_windowStyle & wxTE_MULTILINE )
2141 {
2142 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2143 }
2144 //else: for single line control everything is ok
2145
2146 // we have to add the adjustments for the control height only once, not
2147 // once per line, so do it after multiplication above
2148 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2149
2150 return wxSize(wText, hText);
2151 }
2152
2153 // ----------------------------------------------------------------------------
2154 // standard handlers for standard edit menu events
2155 // ----------------------------------------------------------------------------
2156
2157 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2158 {
2159 Cut();
2160 }
2161
2162 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2163 {
2164 Copy();
2165 }
2166
2167 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2168 {
2169 Paste();
2170 }
2171
2172 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2173 {
2174 Undo();
2175 }
2176
2177 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2178 {
2179 Redo();
2180 }
2181
2182 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2183 {
2184 long from, to;
2185 GetSelection(& from, & to);
2186 if (from != -1 && to != -1)
2187 Remove(from, to);
2188 }
2189
2190 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2191 {
2192 SetSelection(-1, -1);
2193 }
2194
2195 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2196 {
2197 event.Enable( CanCut() );
2198 }
2199
2200 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2201 {
2202 event.Enable( CanCopy() );
2203 }
2204
2205 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2206 {
2207 event.Enable( CanPaste() );
2208 }
2209
2210 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2211 {
2212 event.Enable( CanUndo() );
2213 }
2214
2215 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2216 {
2217 event.Enable( CanRedo() );
2218 }
2219
2220 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2221 {
2222 long from, to;
2223 GetSelection(& from, & to);
2224 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2225 }
2226
2227 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2228 {
2229 event.Enable(GetLastPosition() > 0);
2230 }
2231
2232 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2233 {
2234 #if wxUSE_RICHEDIT
2235 if (IsRich())
2236 {
2237 if (!m_privateContextMenu)
2238 {
2239 m_privateContextMenu = new wxMenu;
2240 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2241 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2242 m_privateContextMenu->AppendSeparator();
2243 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2244 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2245 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2246 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2247 m_privateContextMenu->AppendSeparator();
2248 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2249 }
2250 PopupMenu(m_privateContextMenu);
2251 return;
2252 }
2253 else
2254 #endif
2255 event.Skip();
2256 }
2257
2258 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2259 {
2260 // be sure the caret remains invisible if the user had hidden it
2261 if ( !m_isNativeCaretShown )
2262 {
2263 ::HideCaret(GetHwnd());
2264 }
2265 }
2266
2267 // ----------------------------------------------------------------------------
2268 // Default colors for MSW text control
2269 //
2270 // Set default background color to the native white instead of
2271 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2272 // ----------------------------------------------------------------------------
2273
2274 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2275 {
2276 wxVisualAttributes attrs;
2277 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2278 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2279 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2280
2281 return attrs;
2282 }
2283
2284 // the rest of the file only deals with the rich edit controls
2285 #if wxUSE_RICHEDIT
2286
2287 // ----------------------------------------------------------------------------
2288 // EN_LINK processing
2289 // ----------------------------------------------------------------------------
2290
2291 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2292 {
2293 NMHDR *hdr = (NMHDR* )lParam;
2294 switch ( hdr->code )
2295 {
2296 case EN_MSGFILTER:
2297 {
2298 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2299 UINT msg = msgf->msg;
2300
2301 // this is a bit crazy but richedit 1.0 sends us all mouse
2302 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2303 // generate the wxWin events for this message manually
2304 //
2305 // NB: in fact, this is still not totally correct as it does
2306 // send us WM_LBUTTONUP if the selection was cleared by the
2307 // last click -- so currently we get 2 events in this case,
2308 // but as I don't see any obvious way to check for this I
2309 // leave this code in place because it's still better than
2310 // not getting left up events at all
2311 if ( msg == WM_LBUTTONUP )
2312 {
2313 WXUINT flags = msgf->wParam;
2314 int x = GET_X_LPARAM(msgf->lParam),
2315 y = GET_Y_LPARAM(msgf->lParam);
2316
2317 HandleMouseEvent(msg, x, y, flags);
2318 }
2319 }
2320
2321 // return true to process the event (and false to ignore it)
2322 return true;
2323
2324 case EN_LINK:
2325 {
2326 const ENLINK *enlink = (ENLINK *)hdr;
2327
2328 switch ( enlink->msg )
2329 {
2330 case WM_SETCURSOR:
2331 // ok, so it is hardcoded - do we really nee to
2332 // customize it?
2333 {
2334 wxCursor cur(wxCURSOR_HAND);
2335 ::SetCursor(GetHcursorOf(cur));
2336 *result = TRUE;
2337 break;
2338 }
2339
2340 case WM_MOUSEMOVE:
2341 case WM_LBUTTONDOWN:
2342 case WM_LBUTTONUP:
2343 case WM_LBUTTONDBLCLK:
2344 case WM_RBUTTONDOWN:
2345 case WM_RBUTTONUP:
2346 case WM_RBUTTONDBLCLK:
2347 // send a mouse event
2348 {
2349 static const wxEventType eventsMouse[] =
2350 {
2351 wxEVT_MOTION,
2352 wxEVT_LEFT_DOWN,
2353 wxEVT_LEFT_UP,
2354 wxEVT_LEFT_DCLICK,
2355 wxEVT_RIGHT_DOWN,
2356 wxEVT_RIGHT_UP,
2357 wxEVT_RIGHT_DCLICK,
2358 };
2359
2360 // the event ids are consecutive
2361 wxMouseEvent
2362 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2363
2364 InitMouseEvent(evtMouse,
2365 GET_X_LPARAM(enlink->lParam),
2366 GET_Y_LPARAM(enlink->lParam),
2367 enlink->wParam);
2368
2369 wxTextUrlEvent event(m_windowId, evtMouse,
2370 enlink->chrg.cpMin,
2371 enlink->chrg.cpMax);
2372
2373 InitCommandEvent(event);
2374
2375 *result = ProcessCommand(event);
2376 }
2377 break;
2378 }
2379 }
2380 return true;
2381 }
2382
2383 // not processed, leave it to the base class
2384 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2385 }
2386
2387 // ----------------------------------------------------------------------------
2388 // colour setting for the rich edit controls
2389 // ----------------------------------------------------------------------------
2390
2391 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2392 {
2393 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2394 {
2395 // colour didn't really change
2396 return false;
2397 }
2398
2399 if ( IsRich() )
2400 {
2401 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2402 // EM_SETBKGNDCOLOR additionally
2403 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2404 }
2405
2406 return true;
2407 }
2408
2409 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2410 {
2411 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2412 {
2413 // colour didn't really change
2414 return false;
2415 }
2416
2417 if ( IsRich() )
2418 {
2419 // change the colour of everything
2420 CHARFORMAT cf;
2421 wxZeroMemory(cf);
2422 cf.cbSize = sizeof(cf);
2423 cf.dwMask = CFM_COLOR;
2424 cf.crTextColor = wxColourToRGB(colour);
2425 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2426 }
2427
2428 return true;
2429 }
2430
2431 // ----------------------------------------------------------------------------
2432 // styling support for rich edit controls
2433 // ----------------------------------------------------------------------------
2434
2435 #if wxUSE_RICHEDIT
2436
2437 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2438 {
2439 if ( !IsRich() )
2440 {
2441 // can't do it with normal text control
2442 return false;
2443 }
2444
2445 // the richedit 1.0 doesn't handle setting background colour, so don't
2446 // even try to do anything if it's the only thing we want to change
2447 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2448 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2449 !style.HasTabs() )
2450 {
2451 // nothing to do: return true if there was really nothing to do and
2452 // false if we failed to set bg colour
2453 return !style.HasBackgroundColour();
2454 }
2455
2456 // order the range if needed
2457 if ( start > end )
2458 {
2459 long tmp = start;
2460 start = end;
2461 end = tmp;
2462 }
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 = start != startOld || end != endOld;
2471
2472 if ( changeSel )
2473 {
2474 DoSetSelection(start, end, false /* don't scroll caret into view */);
2475 }
2476
2477 // initialize CHARFORMAT struct
2478 #if wxUSE_RICHEDIT2
2479 CHARFORMAT2 cf;
2480 #else
2481 CHARFORMAT cf;
2482 #endif
2483
2484 wxZeroMemory(cf);
2485
2486 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2487 // CHARFORMAT in that case
2488 #if wxUSE_RICHEDIT2
2489 if ( m_verRichEdit == 1 )
2490 {
2491 // this is the only thing the control is going to grok
2492 cf.cbSize = sizeof(CHARFORMAT);
2493 }
2494 else
2495 #endif
2496 {
2497 // CHARFORMAT or CHARFORMAT2
2498 cf.cbSize = sizeof(cf);
2499 }
2500
2501 if ( style.HasFont() )
2502 {
2503 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2504 // but using it doesn't seem to hurt neither so leaving it for now
2505
2506 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2507 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2508
2509 // fill in data from LOGFONT but recalculate lfHeight because we need
2510 // the real height in twips and not the negative number which
2511 // wxFillLogFont() returns (this is correct in general and works with
2512 // the Windows font mapper, but not here)
2513 LOGFONT lf;
2514 wxFillLogFont(&lf, &style.GetFont());
2515 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2516 cf.bCharSet = lf.lfCharSet;
2517 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2518 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2519
2520 // also deal with underline/italic/bold attributes: note that we must
2521 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2522 // style to allow clearing it
2523 if ( lf.lfItalic )
2524 {
2525 cf.dwEffects |= CFE_ITALIC;
2526 }
2527
2528 if ( lf.lfWeight == FW_BOLD )
2529 {
2530 cf.dwEffects |= CFE_BOLD;
2531 }
2532
2533 if ( lf.lfUnderline )
2534 {
2535 cf.dwEffects |= CFE_UNDERLINE;
2536 }
2537
2538 // strikeout fonts are not supported by wxWidgets
2539 }
2540
2541 if ( style.HasTextColour() )
2542 {
2543 cf.dwMask |= CFM_COLOR;
2544 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2545 }
2546
2547 #if wxUSE_RICHEDIT2
2548 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2549 {
2550 cf.dwMask |= CFM_BACKCOLOR;
2551 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2552 }
2553 #endif // wxUSE_RICHEDIT2
2554
2555 // do format the selection
2556 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2557 SCF_SELECTION, (LPARAM)&cf) != 0;
2558 if ( !ok )
2559 {
2560 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2561 }
2562
2563 // now do the paragraph formatting
2564 PARAFORMAT2 pf;
2565 wxZeroMemory(pf);
2566 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2567 // PARAFORMAT in that case
2568 #if wxUSE_RICHEDIT2
2569 if ( m_verRichEdit == 1 )
2570 {
2571 // this is the only thing the control is going to grok
2572 pf.cbSize = sizeof(PARAFORMAT);
2573 }
2574 else
2575 #endif
2576 {
2577 // PARAFORMAT or PARAFORMAT2
2578 pf.cbSize = sizeof(pf);
2579 }
2580
2581 if (style.HasAlignment())
2582 {
2583 pf.dwMask |= PFM_ALIGNMENT;
2584 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2585 pf.wAlignment = PFA_RIGHT;
2586 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2587 pf.wAlignment = PFA_CENTER;
2588 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2589 pf.wAlignment = PFA_JUSTIFY;
2590 else
2591 pf.wAlignment = PFA_LEFT;
2592 }
2593
2594 if (style.HasLeftIndent())
2595 {
2596 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2597
2598 // Convert from 1/10 mm to TWIPS
2599 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2600 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2601 }
2602
2603 if (style.HasRightIndent())
2604 {
2605 pf.dwMask |= PFM_RIGHTINDENT;
2606
2607 // Convert from 1/10 mm to TWIPS
2608 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2609 }
2610
2611 if (style.HasTabs())
2612 {
2613 pf.dwMask |= PFM_TABSTOPS;
2614
2615 const wxArrayInt& tabs = style.GetTabs();
2616
2617 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2618 size_t i;
2619 for (i = 0; i < (size_t) pf.cTabCount; i++)
2620 {
2621 // Convert from 1/10 mm to TWIPS
2622 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2623 }
2624 }
2625
2626 #if wxUSE_RICHEDIT2
2627 if ( m_verRichEdit > 1 )
2628 {
2629 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2630 {
2631 // Use RTL paragraphs in RTL mode to get proper layout
2632 pf.dwMask |= PFM_RTLPARA;
2633 pf.wEffects |= PFE_RTLPARA;
2634 }
2635 }
2636 #endif // wxUSE_RICHEDIT2
2637
2638 if ( pf.dwMask )
2639 {
2640 // do format the selection
2641 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2642 0, (LPARAM) &pf) != 0;
2643 if ( !ok )
2644 {
2645 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2646 }
2647 }
2648
2649 if ( changeSel )
2650 {
2651 // restore the original selection
2652 DoSetSelection(startOld, endOld, false);
2653 }
2654
2655 return ok;
2656 }
2657
2658 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2659 {
2660 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2661 return false;
2662
2663 if ( IsEditable() )
2664 {
2665 // we have to do this or the style wouldn't apply for the text typed by
2666 // the user
2667 wxTextPos posLast = GetLastPosition();
2668 SetStyle(posLast, posLast, m_defaultStyle);
2669 }
2670
2671 return true;
2672 }
2673
2674 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2675 {
2676 if ( !IsRich() )
2677 {
2678 // can't do it with normal text control
2679 return false;
2680 }
2681
2682 // initialize CHARFORMAT struct
2683 #if wxUSE_RICHEDIT2
2684 CHARFORMAT2 cf;
2685 #else
2686 CHARFORMAT cf;
2687 #endif
2688
2689 wxZeroMemory(cf);
2690
2691 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2692 // CHARFORMAT in that case
2693 #if wxUSE_RICHEDIT2
2694 if ( m_verRichEdit == 1 )
2695 {
2696 // this is the only thing the control is going to grok
2697 cf.cbSize = sizeof(CHARFORMAT);
2698 }
2699 else
2700 #endif
2701 {
2702 // CHARFORMAT or CHARFORMAT2
2703 cf.cbSize = sizeof(cf);
2704 }
2705 // we can only change the format of the selection, so select the range we
2706 // want and restore the old selection later
2707 long startOld, endOld;
2708 GetSelection(&startOld, &endOld);
2709
2710 // but do we really have to change the selection?
2711 bool changeSel = position != startOld || position != endOld;
2712
2713 if ( changeSel )
2714 {
2715 DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2716 }
2717
2718 // get the selection formatting
2719 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2720 SCF_SELECTION, (LPARAM)&cf) ;
2721
2722
2723 LOGFONT lf;
2724 lf.lfHeight = cf.yHeight;
2725 lf.lfWidth = 0;
2726 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2727 lf.lfClipPrecision = 0;
2728 lf.lfEscapement = 0;
2729 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2730
2731 //NOTE: we _MUST_ set each of these values to _something_ since we
2732 //do not call wxZeroMemory on the LOGFONT lf
2733 if (cf.dwEffects & CFE_ITALIC)
2734 lf.lfItalic = TRUE;
2735 else
2736 lf.lfItalic = FALSE;
2737
2738 lf.lfOrientation = 0;
2739 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2740 lf.lfQuality = 0;
2741
2742 if (cf.dwEffects & CFE_STRIKEOUT)
2743 lf.lfStrikeOut = TRUE;
2744 else
2745 lf.lfStrikeOut = FALSE;
2746
2747 if (cf.dwEffects & CFE_UNDERLINE)
2748 lf.lfUnderline = TRUE;
2749 else
2750 lf.lfUnderline = FALSE;
2751
2752 if (cf.dwEffects & CFE_BOLD)
2753 lf.lfWeight = FW_BOLD;
2754 else
2755 lf.lfWeight = FW_NORMAL;
2756
2757 wxFont font = wxCreateFontFromLogFont(& lf);
2758 if (font.Ok())
2759 {
2760 style.SetFont(font);
2761 }
2762 style.SetTextColour(wxColour(cf.crTextColor));
2763
2764 #if wxUSE_RICHEDIT2
2765 if ( m_verRichEdit != 1 )
2766 {
2767 // cf.dwMask |= CFM_BACKCOLOR;
2768 style.SetBackgroundColour(wxColour(cf.crBackColor));
2769 }
2770 #endif // wxUSE_RICHEDIT2
2771
2772 // now get the paragraph formatting
2773 PARAFORMAT2 pf;
2774 wxZeroMemory(pf);
2775 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2776 // PARAFORMAT in that case
2777 #if wxUSE_RICHEDIT2
2778 if ( m_verRichEdit == 1 )
2779 {
2780 // this is the only thing the control is going to grok
2781 pf.cbSize = sizeof(PARAFORMAT);
2782 }
2783 else
2784 #endif
2785 {
2786 // PARAFORMAT or PARAFORMAT2
2787 pf.cbSize = sizeof(pf);
2788 }
2789
2790 // do format the selection
2791 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2792
2793 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2794 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2795
2796 if (pf.wAlignment == PFA_CENTER)
2797 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2798 else if (pf.wAlignment == PFA_RIGHT)
2799 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2800 else if (pf.wAlignment == PFA_JUSTIFY)
2801 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2802 else
2803 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2804
2805 wxArrayInt tabStops;
2806 size_t i;
2807 for (i = 0; i < (size_t) pf.cTabCount; i++)
2808 {
2809 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2810 }
2811
2812 if ( changeSel )
2813 {
2814 // restore the original selection
2815 DoSetSelection(startOld, endOld, false);
2816 }
2817
2818 return true;
2819 }
2820
2821 #endif
2822
2823 // ----------------------------------------------------------------------------
2824 // wxRichEditModule
2825 // ----------------------------------------------------------------------------
2826
2827 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2828
2829 bool wxRichEditModule::OnInit()
2830 {
2831 // don't do anything - we will load it when needed
2832 return true;
2833 }
2834
2835 void wxRichEditModule::OnExit()
2836 {
2837 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2838 {
2839 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2840 {
2841 ::FreeLibrary(ms_hRichEdit[i]);
2842 ms_hRichEdit[i] = NULL;
2843 }
2844 }
2845 #if wxUSE_INKEDIT
2846 if (ms_inkEditLib.IsLoaded())
2847 ms_inkEditLib.Unload();
2848 #endif
2849 }
2850
2851 /* static */
2852 bool wxRichEditModule::Load(Version version)
2853 {
2854 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2855 {
2856 // we had already tried to load it and failed
2857 return false;
2858 }
2859
2860 if ( ms_hRichEdit[version] )
2861 {
2862 // we've already got this one
2863 return true;
2864 }
2865
2866 static const wxChar *dllnames[] =
2867 {
2868 _T("riched32"),
2869 _T("riched20"),
2870 _T("msftedit"),
2871 };
2872
2873 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2874 RichEditDllNamesVersionsMismatch );
2875
2876 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2877
2878 if ( !ms_hRichEdit[version] )
2879 {
2880 ms_hRichEdit[version] = INVALID_HINSTANCE;
2881
2882 return false;
2883 }
2884
2885 return true;
2886 }
2887
2888 #if wxUSE_INKEDIT
2889 // load the InkEdit library
2890 bool wxRichEditModule::LoadInkEdit()
2891 {
2892 static wxDynamicLibrary ms_inkEditLib;
2893 static bool ms_inkEditLibLoadAttemped;
2894 if (ms_inkEditLibLoadAttemped)
2895 ms_inkEditLib.IsLoaded();
2896
2897 ms_inkEditLibLoadAttemped = true;
2898
2899 wxLogNull logNull;
2900 return ms_inkEditLib.Load(wxT("inked"));
2901 }
2902 #endif
2903
2904
2905 #endif // wxUSE_RICHEDIT
2906
2907 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)