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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 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
81
82 // dummy value used for m_dropTarget, different from any valid pointer value
83 // (which are all even under Windows) and NULL
84 static wxDropTarget *
85 wxRICHTEXT_DEFAULT_DROPTARGET = wx_reinterpret_cast(wxDropTarget *, 1);
86
87 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
88
89 // ----------------------------------------------------------------------------
90 // private classes
91 // ----------------------------------------------------------------------------
92
93 #if wxUSE_RICHEDIT
94
95 // this module initializes RichEdit DLL(s) if needed
96 class wxRichEditModule : public wxModule
97 {
98 public:
99 enum Version
100 {
101 Version_1, // riched32.dll
102 Version_2or3, // both use riched20.dll
103 Version_41, // msftedit.dll (XP SP1 and Windows 2003)
104 Version_Max
105 };
106
107 virtual bool OnInit();
108 virtual void OnExit();
109
110 // load the richedit DLL for the specified version of rich edit
111 static bool Load(Version version);
112
113 #if wxUSE_INKEDIT
114 // load the InkEdit library
115 static bool LoadInkEdit();
116 #endif
117
118 private:
119 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
120 static HINSTANCE ms_hRichEdit[Version_Max];
121
122 #if wxUSE_INKEDIT
123 static wxDynamicLibrary ms_inkEditLib;
124 static bool ms_inkEditLibLoadAttemped;
125 #endif
126
127 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
128 };
129
130 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
131
132 #if wxUSE_INKEDIT
133 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
134 bool wxRichEditModule::ms_inkEditLibLoadAttemped = false;
135 #endif
136
137 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
138
139 #endif // wxUSE_RICHEDIT
140
141 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
142 // necessary) and to reset it back to -1 afterwards
143 class UpdatesCountFilter
144 {
145 public:
146 UpdatesCountFilter(int& count)
147 : m_count(count)
148 {
149 wxASSERT_MSG( m_count == -1 || m_count == -2,
150 _T("wrong initial m_updatesCount value") );
151
152 if (m_count != -2)
153 m_count = 0;
154 //else: we don't want to count how many update events we get as we're going
155 // to ignore all of them
156 }
157
158 ~UpdatesCountFilter()
159 {
160 m_count = -1;
161 }
162
163 // return true if an event has been received
164 bool GotUpdate() const
165 {
166 return m_count == 1;
167 }
168
169 private:
170 int& m_count;
171
172 DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
173 };
174
175 // ----------------------------------------------------------------------------
176 // event tables and other macros
177 // ----------------------------------------------------------------------------
178
179 #if wxUSE_EXTENDED_RTTI
180 WX_DEFINE_FLAGS( wxTextCtrlStyle )
181
182 wxBEGIN_FLAGS( wxTextCtrlStyle )
183 // new style border flags, we put them first to
184 // use them for streaming out
185 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
186 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
187 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
188 wxFLAGS_MEMBER(wxBORDER_RAISED)
189 wxFLAGS_MEMBER(wxBORDER_STATIC)
190 wxFLAGS_MEMBER(wxBORDER_NONE)
191
192 // old style border flags
193 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
194 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
195 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
196 wxFLAGS_MEMBER(wxRAISED_BORDER)
197 wxFLAGS_MEMBER(wxSTATIC_BORDER)
198 wxFLAGS_MEMBER(wxBORDER)
199
200 // standard window styles
201 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
202 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
203 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
204 wxFLAGS_MEMBER(wxWANTS_CHARS)
205 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
206 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
207 wxFLAGS_MEMBER(wxVSCROLL)
208 wxFLAGS_MEMBER(wxHSCROLL)
209
210 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
211 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
212 wxFLAGS_MEMBER(wxTE_MULTILINE)
213 wxFLAGS_MEMBER(wxTE_PASSWORD)
214 wxFLAGS_MEMBER(wxTE_READONLY)
215 wxFLAGS_MEMBER(wxHSCROLL)
216 wxFLAGS_MEMBER(wxTE_RICH)
217 wxFLAGS_MEMBER(wxTE_RICH2)
218 wxFLAGS_MEMBER(wxTE_AUTO_URL)
219 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
220 wxFLAGS_MEMBER(wxTE_LEFT)
221 wxFLAGS_MEMBER(wxTE_CENTRE)
222 wxFLAGS_MEMBER(wxTE_RIGHT)
223 wxFLAGS_MEMBER(wxTE_DONTWRAP)
224 wxFLAGS_MEMBER(wxTE_CHARWRAP)
225 wxFLAGS_MEMBER(wxTE_WORDWRAP)
226
227 wxEND_FLAGS( wxTextCtrlStyle )
228
229 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
230
231 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
232 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
233 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
234
235 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
236 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
237 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
238 wxEND_PROPERTIES_TABLE()
239
240 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
241 wxEND_HANDLERS_TABLE()
242
243 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
244 #else
245 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
246 #endif
247
248
249 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
250 EVT_CHAR(wxTextCtrl::OnChar)
251 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
252
253 #if wxUSE_RICHEDIT
254 EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
255 #endif
256
257 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
258 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
259 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
260 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
261 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
262 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
263 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
264
265 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
266 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
267 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
268 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
269 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
270 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
271 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
272
273 EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
274 END_EVENT_TABLE()
275
276 // ============================================================================
277 // implementation
278 // ============================================================================
279
280 // ----------------------------------------------------------------------------
281 // creation
282 // ----------------------------------------------------------------------------
283
284 void wxTextCtrl::Init()
285 {
286 #if wxUSE_RICHEDIT
287 m_verRichEdit = 0;
288 #endif // wxUSE_RICHEDIT
289
290 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
291 m_isInkEdit = 0;
292 #endif
293
294 m_privateContextMenu = NULL;
295 m_updatesCount = -1;
296 m_isNativeCaretShown = true;
297 }
298
299 wxTextCtrl::~wxTextCtrl()
300 {
301 delete m_privateContextMenu;
302 }
303
304 bool wxTextCtrl::Create(wxWindow *parent,
305 wxWindowID id,
306 const wxString& value,
307 const wxPoint& pos,
308 const wxSize& size,
309 long style,
310 const wxValidator& validator,
311 const wxString& name)
312 {
313 // base initialization
314 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
315 return false;
316
317 if ( !MSWCreateText(value, pos, size) )
318 return false;
319
320 #if wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
321 if ( IsRich() )
322 {
323 // rich text controls have a default associated drop target which
324 // allows them to receive (rich) text dropped on them, which is nice,
325 // but prevents us from associating a user-defined drop target with
326 // them as we need to unregister the old one first
327 //
328 // to make it work, we set m_dropTarget to this special value initially
329 // and check for it in our SetDropTarget()
330 m_dropTarget = wxRICHTEXT_DEFAULT_DROPTARGET;
331 }
332 #endif // wxUSE_DRAG_AND_DROP && wxUSE_RICHEDIT
333
334 return true;
335 }
336
337 // returns true if the platform should explicitly apply a theme border
338 bool wxTextCtrl::CanApplyThemeBorder() const
339 {
340 #ifdef __WXWINCE__
341 return false;
342 #else
343 // Standard text control already handles theming
344 return ((GetWindowStyle() & (wxTE_RICH|wxTE_RICH2)) != 0);
345 #endif
346 }
347
348 bool wxTextCtrl::MSWCreateText(const wxString& value,
349 const wxPoint& pos,
350 const wxSize& size)
351 {
352 // translate wxWin style flags to MSW ones
353 WXDWORD msStyle = MSWGetCreateWindowFlags();
354
355 // do create the control - either an EDIT or RICHEDIT
356 wxString windowClass = wxT("EDIT");
357
358 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
359 // A control that capitalizes the first letter
360 if ( HasFlag(wxTE_CAPITALIZE) )
361 windowClass = wxT("CAPEDIT");
362 #endif
363
364 #if wxUSE_RICHEDIT
365 if ( m_windowStyle & wxTE_AUTO_URL )
366 {
367 // automatic URL detection only works in RichEdit 2.0+
368 m_windowStyle |= wxTE_RICH2;
369 }
370
371 if ( m_windowStyle & wxTE_RICH2 )
372 {
373 // using richedit 2.0 implies using wxTE_RICH
374 m_windowStyle |= wxTE_RICH;
375 }
376
377 // we need to load the richedit DLL before creating the rich edit control
378 if ( m_windowStyle & wxTE_RICH )
379 {
380 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
381 // each other but not with version 1.0, so we have separate flags for
382 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
383 // EDIT control), 1 for version 1.0 or 2 for any higher version)
384 //
385 // notice that 1.0 has no Unicode support at all so in Unicode build we
386 // must use another version
387
388 #if wxUSE_UNICODE
389 m_verRichEdit = 2;
390 #else // !wxUSE_UNICODE
391 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
392 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
393
394 #if wxUSE_INKEDIT
395 // First test if we can load an ink edit control. Normally, all edit
396 // controls will be made ink edit controls if a tablet environment is
397 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
398 // However, an application can veto ink edit controls by either specifying
399 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
400 //
401 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
402 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
403 {
404 if (wxRichEditModule::LoadInkEdit())
405 {
406 windowClass = INKEDIT_CLASS;
407
408 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
409 m_isInkEdit = 1;
410 #endif
411
412 // Fake rich text version for other calls
413 m_verRichEdit = 2;
414 }
415 }
416 #endif
417
418 if (!IsInkEdit())
419 {
420 if ( m_verRichEdit == 2 )
421 {
422 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
423 {
424 // yes, class name for version 4.1 really is 5.0
425 windowClass = _T("RICHEDIT50W");
426 }
427 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
428 {
429 windowClass = _T("RichEdit20")
430 #if wxUSE_UNICODE
431 _T("W");
432 #else // ANSI
433 _T("A");
434 #endif // Unicode/ANSI
435 }
436 else // failed to load msftedit.dll and riched20.dll
437 {
438 m_verRichEdit = 1;
439 }
440 }
441
442 if ( m_verRichEdit == 1 )
443 {
444 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
445 {
446 windowClass = _T("RICHEDIT");
447 }
448 else // failed to load any richedit control DLL
449 {
450 // only give the error msg once if the DLL can't be loaded
451 static bool s_errorGiven = false; // MT ok as only used by GUI
452
453 if ( !s_errorGiven )
454 {
455 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
456
457 s_errorGiven = true;
458 }
459
460 m_verRichEdit = 0;
461 }
462 }
463 } // !useInkEdit
464 }
465 #endif // wxUSE_RICHEDIT
466
467 // we need to turn '\n's into "\r\n"s for the multiline controls
468 wxString valueWin;
469 if ( m_windowStyle & wxTE_MULTILINE )
470 {
471 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
472 }
473 else // single line
474 {
475 valueWin = value;
476 }
477
478 if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
479 return false;
480
481 #if wxUSE_RICHEDIT
482 if (IsRich())
483 {
484 #if wxUSE_INKEDIT
485 if (IsInkEdit())
486 {
487 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
488 // converted to text.
489 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
490
491 // Make sure the mouse can be used for input
492 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
493 }
494 #endif
495
496 // enable the events we're interested in: we want to get EN_CHANGE as
497 // for the normal controls
498 LPARAM mask = ENM_CHANGE;
499
500 if (GetRichVersion() == 1 && !IsInkEdit())
501 {
502 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
503 // explained in its handler
504 mask |= ENM_MOUSEEVENTS;
505
506 // we also need to force the appearance of the vertical scrollbar
507 // initially as otherwise the control doesn't refresh correctly
508 // after resize: but once the vertical scrollbar had been shown
509 // (even if it's subsequently hidden) it does
510 //
511 // this is clearly a bug and for now it has been only noticed under
512 // Windows XP, so if we're sure it works correctly under other
513 // systems we could do this only for XP
514 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
515 SetInitialSize(size);
516 }
517 else if ( m_windowStyle & wxTE_AUTO_URL )
518 {
519 mask |= ENM_LINK;
520
521 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
522 }
523
524 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
525 }
526 #endif // wxUSE_RICHEDIT
527
528 #ifndef __WXWINCE__
529 // Without this, if we pass the size in the constructor and then don't change it,
530 // the themed borders will be drawn incorrectly.
531 SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
532 SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
533 SWP_FRAMECHANGED);
534 #endif
535
536 return true;
537 }
538
539 // Make sure the window style (etc.) reflects the HWND style (roughly)
540 void wxTextCtrl::AdoptAttributesFromHWND()
541 {
542 wxWindow::AdoptAttributesFromHWND();
543
544 HWND hWnd = GetHwnd();
545 long style = ::GetWindowLong(hWnd, GWL_STYLE);
546
547 // retrieve the style to see whether this is an edit or richedit ctrl
548 #if wxUSE_RICHEDIT
549 wxString classname = wxGetWindowClass(GetHWND());
550
551 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
552 {
553 m_verRichEdit = 0;
554 }
555 else // rich edit?
556 {
557 wxChar c;
558 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
559 {
560 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
561
562 m_verRichEdit = 0;
563 }
564 }
565 #endif // wxUSE_RICHEDIT
566
567 if (style & ES_MULTILINE)
568 m_windowStyle |= wxTE_MULTILINE;
569 if (style & ES_PASSWORD)
570 m_windowStyle |= wxTE_PASSWORD;
571 if (style & ES_READONLY)
572 m_windowStyle |= wxTE_READONLY;
573 if (style & ES_WANTRETURN)
574 m_windowStyle |= wxTE_PROCESS_ENTER;
575 if (style & ES_CENTER)
576 m_windowStyle |= wxTE_CENTRE;
577 if (style & ES_RIGHT)
578 m_windowStyle |= wxTE_RIGHT;
579 }
580
581 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
582 {
583 long msStyle = wxControl::MSWGetStyle(style, exstyle);
584
585 // styles which we alaways add by default
586 if ( style & wxTE_MULTILINE )
587 {
588 msStyle |= ES_MULTILINE | ES_WANTRETURN;
589 if ( !(style & wxTE_NO_VSCROLL) )
590 {
591 // always adjust the vertical scrollbar automatically if we have it
592 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
593
594 #if wxUSE_RICHEDIT
595 // we have to use this style for the rich edit controls because
596 // without it the vertical scrollbar never appears at all in
597 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
598 if ( style & wxTE_RICH2 )
599 {
600 msStyle |= ES_DISABLENOSCROLL;
601 }
602 #endif // wxUSE_RICHEDIT
603 }
604
605 style |= wxTE_PROCESS_ENTER;
606 }
607 else // !multiline
608 {
609 // there is really no reason to not have this style for single line
610 // text controls
611 msStyle |= ES_AUTOHSCROLL;
612 }
613
614 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
615 // scrollbar, there is no wrapping -- which makes sense
616 if ( style & wxTE_DONTWRAP )
617 {
618 // automatically scroll the control horizontally as necessary
619 //
620 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
621 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
622 // it doesn't seem to do any harm for plain edit controls, add it
623 // always
624 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
625 }
626
627 if ( style & wxTE_READONLY )
628 msStyle |= ES_READONLY;
629
630 if ( style & wxTE_PASSWORD )
631 msStyle |= ES_PASSWORD;
632
633 if ( style & wxTE_NOHIDESEL )
634 msStyle |= ES_NOHIDESEL;
635
636 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
637 if ( style & wxTE_CENTRE )
638 msStyle |= ES_CENTER;
639 else if ( style & wxTE_RIGHT )
640 msStyle |= ES_RIGHT;
641 else
642 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
643
644 return msStyle;
645 }
646
647 void wxTextCtrl::SetWindowStyleFlag(long style)
648 {
649 // changing the alignment of the control dynamically works under Win2003
650 // (but not older Windows version: it seems to work under some versions of
651 // XP but not other ones, and we have no way to determine it so be
652 // conservative here) and only for plain EDIT controls (not RICH ones) and
653 // we have to recreate the control to make it always work
654 if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
655 {
656 const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
657 if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
658 {
659 const wxString value = GetValue();
660 const wxPoint pos = GetPosition();
661 const wxSize size = GetSize();
662
663 // delete the old window
664 HWND hwnd = GetHwnd();
665 DissociateHandle();
666 ::DestroyWindow(hwnd);
667
668 // create the new one with the updated flags
669 m_windowStyle = style;
670 MSWCreateText(value, pos, size);
671
672 // and make sure it has the same attributes as before
673 if ( m_hasFont )
674 {
675 // calling SetFont(m_font) would do nothing as the code would
676 // notice that the font didn't change, so force it to believe
677 // that it did
678 wxFont font = m_font;
679 m_font = wxNullFont;
680 SetFont(font);
681 }
682
683 if ( m_hasFgCol )
684 {
685 wxColour colFg = m_foregroundColour;
686 m_foregroundColour = wxNullColour;
687 SetForegroundColour(colFg);
688 }
689
690 if ( m_hasBgCol )
691 {
692 wxColour colBg = m_backgroundColour;
693 m_backgroundColour = wxNullColour;
694 SetBackgroundColour(colBg);
695 }
696
697 // note that text styles are lost but this is probably not a big
698 // problem: if you use styles, you probably don't use nor change
699 // alignment flags anyhow
700
701 return;
702 }
703 }
704
705 #if wxUSE_RICHEDIT
706 // we have to deal with some styles separately because they can't be
707 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
708 // using richedit-specific EM_SETOPTIONS
709 if ( IsRich() &&
710 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
711 {
712 bool set = (style & wxTE_NOHIDESEL) != 0;
713
714 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
715 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
716 }
717 #endif // wxUSE_RICHEDIT
718
719 wxControl::SetWindowStyleFlag(style);
720 }
721
722 // ----------------------------------------------------------------------------
723 // set/get the controls text
724 // ----------------------------------------------------------------------------
725
726 bool wxTextCtrl::IsEmpty() const
727 {
728 // this is an optimization for multiline controls containing a lot of text
729 if ( IsMultiLine() && GetNumberOfLines() != 1 )
730 return false;
731
732 return wxTextCtrlBase::IsEmpty();
733 }
734
735 wxString wxTextCtrl::GetValue() const
736 {
737 // range 0..-1 is special for GetRange() and means to retrieve all text
738 return GetRange(0, -1);
739 }
740
741 wxString wxTextCtrl::GetRange(long from, long to) const
742 {
743 wxString str;
744
745 if ( from >= to && to != -1 )
746 {
747 // nothing to retrieve
748 return str;
749 }
750
751 #if wxUSE_RICHEDIT
752 if ( IsRich() )
753 {
754 int len = GetWindowTextLength(GetHwnd());
755 if ( len > from )
756 {
757 if ( to == -1 )
758 to = len;
759
760 #if !wxUSE_UNICODE
761 // we must use EM_STREAMOUT if we don't want to lose all characters
762 // not representable in the current character set (EM_GETTEXTRANGE
763 // simply replaces them with question marks...)
764 if ( GetRichVersion() > 1 )
765 {
766 // we must have some encoding, otherwise any 8bit chars in the
767 // control are simply *lost* (replaced by '?')
768 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
769
770 wxFont font = m_defaultStyle.GetFont();
771 if ( !font.Ok() )
772 font = GetFont();
773
774 if ( font.Ok() )
775 {
776 encoding = font.GetEncoding();
777 }
778
779 if ( encoding == wxFONTENCODING_SYSTEM )
780 {
781 encoding = wxLocale::GetSystemEncoding();
782 }
783
784 if ( encoding == wxFONTENCODING_SYSTEM )
785 {
786 encoding = wxFONTENCODING_ISO8859_1;
787 }
788
789 str = StreamOut(encoding);
790
791 if ( !str.empty() )
792 {
793 // we have to manually extract the required part, luckily
794 // this is easy in this case as EOL characters in str are
795 // just LFs because we remove CRs in wxRichEditStreamOut
796 str = str.Mid(from, to - from);
797 }
798 }
799
800 // StreamOut() wasn't used or failed, try to do it in normal way
801 if ( str.empty() )
802 #endif // !wxUSE_UNICODE
803 {
804 // alloc one extra WORD as needed by the control
805 wxStringBuffer tmp(str, ++len);
806 wxChar *p = tmp;
807
808 TEXTRANGE textRange;
809 textRange.chrg.cpMin = from;
810 textRange.chrg.cpMax = to;
811 textRange.lpstrText = p;
812
813 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
814 0, (LPARAM)&textRange);
815
816 if ( m_verRichEdit > 1 )
817 {
818 // RichEdit 2.0 uses just CR ('\r') for the
819 // newlines which is neither Unix nor Windows
820 // style - convert it to something reasonable
821 for ( ; *p; p++ )
822 {
823 if ( *p == _T('\r') )
824 *p = _T('\n');
825 }
826 }
827 }
828
829 if ( m_verRichEdit == 1 )
830 {
831 // convert to the canonical form - see comment below
832 str = wxTextFile::Translate(str, wxTextFileType_Unix);
833 }
834 }
835 //else: no text at all, leave the string empty
836 }
837 else
838 #endif // wxUSE_RICHEDIT
839 {
840 // retrieve all text
841 str = wxGetWindowText(GetHWND());
842
843 // need only a range?
844 if ( from < to )
845 {
846 str = str.Mid(from, to - from);
847 }
848
849 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
850 // canonical one (same one as above) for consistency with the other kinds
851 // of controls and, more importantly, with the other ports
852 str = wxTextFile::Translate(str, wxTextFileType_Unix);
853 }
854
855 return str;
856 }
857
858 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
859 {
860 // if the text is long enough, it's faster to just set it instead of first
861 // comparing it with the old one (chances are that it will be different
862 // anyhow, this comparison is there to avoid flicker for small single-line
863 // edit controls mostly)
864 if ( (value.length() > 0x400) || (value != GetValue()) )
865 {
866 DoWriteText(value, flags /* doesn't include SelectionOnly here */);
867
868 // mark the control as being not dirty - we changed its text, not the
869 // user
870 DiscardEdits();
871
872 // for compatibility, don't move the cursor when doing SetValue()
873 SetInsertionPoint(0);
874 }
875 else // same text
876 {
877 // still reset the modified flag even if the value didn't really change
878 // because now it comes from the program and not the user (and do it
879 // before generating the event so that the event handler could get the
880 // expected value from IsModified())
881 DiscardEdits();
882
883 // still send an event for consistency
884 if (flags & SetValue_SendEvent)
885 SendUpdateEvent();
886 }
887 }
888
889 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
890
891 // TODO: using memcpy() would improve performance a lot for big amounts of text
892
893 DWORD CALLBACK
894 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
895 {
896 *pcb = 0;
897
898 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
899
900 wchar_t *wbuf = (wchar_t *)buf;
901 const wchar_t *wpc = *ppws;
902 while ( cb && *wpc )
903 {
904 *wbuf++ = *wpc++;
905
906 cb -= sizeof(wchar_t);
907 (*pcb) += sizeof(wchar_t);
908 }
909
910 *ppws = wpc;
911
912 return 0;
913 }
914
915 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
916 struct wxStreamOutData
917 {
918 wchar_t *wpc;
919 size_t len;
920 };
921
922 DWORD CALLBACK
923 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
924 {
925 *pcb = 0;
926
927 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
928
929 const wchar_t *wbuf = (const wchar_t *)buf;
930 wchar_t *wpc = data->wpc;
931 while ( cb )
932 {
933 wchar_t wch = *wbuf++;
934
935 // turn "\r\n" into "\n" on the fly
936 if ( wch != L'\r' )
937 *wpc++ = wch;
938 else
939 data->len--;
940
941 cb -= sizeof(wchar_t);
942 (*pcb) += sizeof(wchar_t);
943 }
944
945 data->wpc = wpc;
946
947 return 0;
948 }
949
950
951 #if wxUSE_UNICODE_MSLU
952 #define UNUSED_IF_MSLU(param)
953 #else
954 #define UNUSED_IF_MSLU(param) param
955 #endif
956
957 bool
958 wxTextCtrl::StreamIn(const wxString& value,
959 wxFontEncoding UNUSED_IF_MSLU(encoding),
960 bool selectionOnly)
961 {
962 #if wxUSE_UNICODE_MSLU
963 const wchar_t *wpc = value.c_str();
964 #else // !wxUSE_UNICODE_MSLU
965 wxCSConv conv(encoding);
966
967 const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
968
969 #if wxUSE_WCHAR_T
970 wxWCharBuffer wchBuf(len);
971 wchar_t *wpc = wchBuf.data();
972 #else
973 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
974 wchar_t *wpc = wchBuf;
975 #endif
976
977 conv.MB2WC(wpc, value.mb_str(), value.length());
978 #endif // wxUSE_UNICODE_MSLU
979
980 // finally, stream it in the control
981 EDITSTREAM eds;
982 wxZeroMemory(eds);
983 eds.dwCookie = (DWORD)&wpc;
984 // the cast below is needed for broken (very) old mingw32 headers
985 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
986
987 // same problem as in DoWriteText(): we can get multiple events here
988 UpdatesCountFilter ucf(m_updatesCount);
989
990 ::SendMessage(GetHwnd(), EM_STREAMIN,
991 SF_TEXT |
992 SF_UNICODE |
993 (selectionOnly ? SFF_SELECTION : 0),
994 (LPARAM)&eds);
995
996 // It's okay for EN_UPDATE to not be sent if the selection is empty and
997 // the text is empty, otherwise warn the programmer about it.
998 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
999 _T("EM_STREAMIN didn't send EN_UPDATE?") );
1000
1001 if ( eds.dwError )
1002 {
1003 wxLogLastError(_T("EM_STREAMIN"));
1004 }
1005
1006 #if !wxUSE_WCHAR_T
1007 free(wchBuf);
1008 #endif // !wxUSE_WCHAR_T
1009
1010 return true;
1011 }
1012
1013 #if !wxUSE_UNICODE_MSLU
1014
1015 wxString
1016 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
1017 {
1018 wxString out;
1019
1020 const int len = GetWindowTextLength(GetHwnd());
1021
1022 #if wxUSE_WCHAR_T
1023 wxWCharBuffer wchBuf(len);
1024 wchar_t *wpc = wchBuf.data();
1025 #else
1026 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1027 wchar_t *wpc = wchBuf;
1028 #endif
1029
1030 wxStreamOutData data;
1031 data.wpc = wpc;
1032 data.len = len;
1033
1034 EDITSTREAM eds;
1035 wxZeroMemory(eds);
1036 eds.dwCookie = (DWORD)&data;
1037 eds.pfnCallback = wxRichEditStreamOut;
1038
1039 ::SendMessage
1040 (
1041 GetHwnd(),
1042 EM_STREAMOUT,
1043 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1044 (LPARAM)&eds
1045 );
1046
1047 if ( eds.dwError )
1048 {
1049 wxLogLastError(_T("EM_STREAMOUT"));
1050 }
1051 else // streamed out ok
1052 {
1053 // NUL-terminate the string because its length could have been
1054 // decreased by wxRichEditStreamOut
1055 *(wchBuf.data() + data.len) = L'\0';
1056
1057 // now convert to the given encoding (this is a possibly lossful
1058 // conversion but what else can we do)
1059 wxCSConv conv(encoding);
1060 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1061 if ( lenNeeded++ )
1062 {
1063 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1064 }
1065 }
1066
1067 #if !wxUSE_WCHAR_T
1068 free(wchBuf);
1069 #endif // !wxUSE_WCHAR_T
1070
1071 return out;
1072 }
1073
1074 #endif // !wxUSE_UNICODE_MSLU
1075
1076 #endif // wxUSE_RICHEDIT
1077
1078 void wxTextCtrl::WriteText(const wxString& value)
1079 {
1080 DoWriteText(value);
1081 }
1082
1083 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1084 {
1085 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1086 wxString valueDos;
1087 if ( m_windowStyle & wxTE_MULTILINE )
1088 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1089 else
1090 valueDos = value;
1091
1092 #if wxUSE_RICHEDIT
1093 // there are several complications with the rich edit controls here
1094 bool done = false;
1095 if ( IsRich() )
1096 {
1097 // first, ensure that the new text will be in the default style
1098 if ( !m_defaultStyle.IsDefault() )
1099 {
1100 long start, end;
1101 GetSelection(&start, &end);
1102 SetStyle(start, end, m_defaultStyle);
1103 }
1104
1105 #if wxUSE_UNICODE_MSLU
1106 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1107 // but EM_STREAMIN works
1108 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1109 {
1110 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1111 }
1112 #endif // wxUSE_UNICODE_MSLU
1113
1114 #if !wxUSE_UNICODE
1115 // next check if the text we're inserting must be shown in a non
1116 // default charset -- this only works for RichEdit > 1.0
1117 if ( GetRichVersion() > 1 )
1118 {
1119 wxFont font = m_defaultStyle.GetFont();
1120 if ( !font.Ok() )
1121 font = GetFont();
1122
1123 if ( font.Ok() )
1124 {
1125 wxFontEncoding encoding = font.GetEncoding();
1126 if ( encoding != wxFONTENCODING_SYSTEM )
1127 {
1128 // we have to use EM_STREAMIN to force richedit control 2.0+
1129 // to show any text in the non default charset -- otherwise
1130 // it thinks it knows better than we do and always shows it
1131 // in the default one
1132 done = StreamIn(valueDos, encoding, selectionOnly);
1133 }
1134 }
1135 }
1136 #endif // !wxUSE_UNICODE
1137 }
1138
1139 if ( !done )
1140 #endif // wxUSE_RICHEDIT
1141 {
1142 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1143 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1144 // -- undetermined -- conditions with rich edit) and sometimes we don't
1145 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1146 // we generate exactly one of them by ignoring all but the first one in
1147 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1148 // notifications from Windows
1149 if ( !(flags & SetValue_SendEvent) )
1150 m_updatesCount = -2; // suppress any update event
1151
1152 UpdatesCountFilter ucf(m_updatesCount);
1153
1154 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1155 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1156 selectionOnly ? 1 : 0, (LPARAM)valueDos.wx_str());
1157
1158 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1159 {
1160 SendUpdateEvent();
1161 }
1162 }
1163 }
1164
1165 void wxTextCtrl::AppendText(const wxString& text)
1166 {
1167 SetInsertionPointEnd();
1168
1169 WriteText(text);
1170
1171 #if wxUSE_RICHEDIT
1172 // don't do this if we're frozen, saves some time
1173 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1174 {
1175 // setting the caret to the end and showing it simply doesn't work for
1176 // RichEdit 2.0 -- force it to still do what we want
1177 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1178 }
1179 #endif // wxUSE_RICHEDIT
1180 }
1181
1182 void wxTextCtrl::Clear()
1183 {
1184 ::SetWindowText(GetHwnd(), wxEmptyString);
1185
1186 #if wxUSE_RICHEDIT
1187 if ( !IsRich() )
1188 #endif // wxUSE_RICHEDIT
1189 {
1190 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1191 // but the normal ones don't -- make Clear() behaviour consistent by
1192 // always sending this event
1193
1194 // Windows already sends an update event for single-line
1195 // controls.
1196 if ( m_windowStyle & wxTE_MULTILINE )
1197 SendUpdateEvent();
1198 }
1199 }
1200
1201 #ifdef __WIN32__
1202
1203 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1204 {
1205 SetFocus();
1206
1207 size_t lenOld = GetValue().length();
1208
1209 wxUint32 code = event.GetRawKeyCode();
1210 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1211 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1212
1213 // assume that any alphanumeric key changes the total number of characters
1214 // in the control - this should work in 99% of cases
1215 return GetValue().length() != lenOld;
1216 }
1217
1218 #endif // __WIN32__
1219
1220 // ----------------------------------------------------------------------------
1221 // Clipboard operations
1222 // ----------------------------------------------------------------------------
1223
1224 void wxTextCtrl::Copy()
1225 {
1226 if (CanCopy())
1227 {
1228 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1229 }
1230 }
1231
1232 void wxTextCtrl::Cut()
1233 {
1234 if (CanCut())
1235 {
1236 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1237 }
1238 }
1239
1240 void wxTextCtrl::Paste()
1241 {
1242 if (CanPaste())
1243 {
1244 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1245 }
1246 }
1247
1248 bool wxTextCtrl::HasSelection() const
1249 {
1250 long from, to;
1251 GetSelection(&from, &to);
1252 return from != to;
1253 }
1254
1255 bool wxTextCtrl::CanCopy() const
1256 {
1257 // Can copy if there's a selection
1258 return HasSelection();
1259 }
1260
1261 bool wxTextCtrl::CanCut() const
1262 {
1263 return CanCopy() && IsEditable();
1264 }
1265
1266 bool wxTextCtrl::CanPaste() const
1267 {
1268 if ( !IsEditable() )
1269 return false;
1270
1271 #if wxUSE_RICHEDIT
1272 if ( IsRich() )
1273 {
1274 UINT cf = 0; // 0 == any format
1275
1276 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1277 }
1278 #endif // wxUSE_RICHEDIT
1279
1280 // Standard edit control: check for straight text on clipboard
1281 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1282 return false;
1283
1284 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1285 ::CloseClipboard();
1286
1287 return isTextAvailable;
1288 }
1289
1290 // ----------------------------------------------------------------------------
1291 // Accessors
1292 // ----------------------------------------------------------------------------
1293
1294 void wxTextCtrl::SetEditable(bool editable)
1295 {
1296 HWND hWnd = GetHwnd();
1297 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1298 }
1299
1300 void wxTextCtrl::SetInsertionPoint(long pos)
1301 {
1302 DoSetSelection(pos, pos);
1303 }
1304
1305 void wxTextCtrl::SetInsertionPointEnd()
1306 {
1307 // we must not do anything if the caret is already there because calling
1308 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1309 // if it doesn't actually move the caret anywhere and so the simple fact of
1310 // doing it results in horrible flicker when appending big amounts of text
1311 // to the control in a few chunks (see DoAddText() test in the text sample)
1312 const wxTextPos lastPosition = GetLastPosition();
1313 if ( GetInsertionPoint() == lastPosition )
1314 {
1315 return;
1316 }
1317
1318 long pos;
1319
1320 #if wxUSE_RICHEDIT
1321 if ( m_verRichEdit == 1 )
1322 {
1323 // we don't have to waste time calling GetLastPosition() in this case
1324 pos = -1;
1325 }
1326 else // !RichEdit 1.0
1327 #endif // wxUSE_RICHEDIT
1328 {
1329 pos = lastPosition;
1330 }
1331
1332 SetInsertionPoint(pos);
1333 }
1334
1335 long wxTextCtrl::GetInsertionPoint() const
1336 {
1337 #if wxUSE_RICHEDIT
1338 if ( IsRich() )
1339 {
1340 CHARRANGE range;
1341 range.cpMin = 0;
1342 range.cpMax = 0;
1343 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1344 return range.cpMin;
1345 }
1346 #endif // wxUSE_RICHEDIT
1347
1348 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1349 return Pos & 0xFFFF;
1350 }
1351
1352 wxTextPos wxTextCtrl::GetLastPosition() const
1353 {
1354 int numLines = GetNumberOfLines();
1355 long posStartLastLine = XYToPosition(0, numLines - 1);
1356
1357 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1358
1359 return posStartLastLine + lenLastLine;
1360 }
1361
1362 // If the return values from and to are the same, there is no
1363 // selection.
1364 void wxTextCtrl::GetSelection(long* from, long* to) const
1365 {
1366 #if wxUSE_RICHEDIT
1367 if ( IsRich() )
1368 {
1369 CHARRANGE charRange;
1370 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1371
1372 *from = charRange.cpMin;
1373 *to = charRange.cpMax;
1374 }
1375 else
1376 #endif // !wxUSE_RICHEDIT
1377 {
1378 DWORD dwStart, dwEnd;
1379 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1380
1381 *from = dwStart;
1382 *to = dwEnd;
1383 }
1384 }
1385
1386 bool wxTextCtrl::IsEditable() const
1387 {
1388 // strangely enough, we may be called before the control is created: our
1389 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1390 // us
1391 if ( !m_hWnd )
1392 return true;
1393
1394 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1395
1396 return (style & ES_READONLY) == 0;
1397 }
1398
1399 // ----------------------------------------------------------------------------
1400 // selection
1401 // ----------------------------------------------------------------------------
1402
1403 void wxTextCtrl::SetSelection(long from, long to)
1404 {
1405 // if from and to are both -1, it means (in wxWidgets) that all text should
1406 // be selected - translate into Windows convention
1407 if ( (from == -1) && (to == -1) )
1408 {
1409 from = 0;
1410 to = -1;
1411 }
1412
1413 DoSetSelection(from, to);
1414 }
1415
1416 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1417 {
1418 HWND hWnd = GetHwnd();
1419
1420 #if wxUSE_RICHEDIT
1421 if ( IsRich() )
1422 {
1423 CHARRANGE range;
1424 range.cpMin = from;
1425 range.cpMax = to;
1426 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1427 }
1428 else
1429 #endif // wxUSE_RICHEDIT
1430 {
1431 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1432 }
1433
1434 if ( scrollCaret && !IsFrozen() )
1435 {
1436 #if wxUSE_RICHEDIT
1437 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1438 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1439 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1440 // option is set (but it does work ok in richedit 1.0 mode...)
1441 //
1442 // so to make it work we either need to give focus to it here which
1443 // will probably create many problems (dummy focus events; window
1444 // containing the text control being brought to foreground
1445 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1446 // create other problems too -- and in fact it does because if we turn
1447 // on/off this style while appending the text to the control, the
1448 // vertical scrollbar never appears in it even if we append tons of
1449 // text and to work around this the only solution I found was to use
1450 // ES_DISABLENOSCROLL
1451 //
1452 // this is very ugly but I don't see any other way to make this work
1453 long style = 0;
1454 if ( GetRichVersion() > 1 )
1455 {
1456 if ( !HasFlag(wxTE_NOHIDESEL) )
1457 {
1458 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1459 // others, remember the style so we can reset it later if needed
1460 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1461 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1462 ECOOP_OR, ECO_NOHIDESEL);
1463 }
1464 //else: everything is already ok
1465 }
1466 #endif // wxUSE_RICHEDIT
1467
1468 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1469
1470 #if wxUSE_RICHEDIT
1471 // restore ECO_NOHIDESEL if we changed it
1472 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1473 {
1474 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1475 ECOOP_AND, ~ECO_NOHIDESEL);
1476 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1477 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1478 }
1479 #endif // wxUSE_RICHEDIT
1480 }
1481 }
1482
1483 // ----------------------------------------------------------------------------
1484 // Working with files
1485 // ----------------------------------------------------------------------------
1486
1487 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1488 {
1489 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1490 {
1491 // update the size limit if needed
1492 AdjustSpaceLimit();
1493
1494 return true;
1495 }
1496
1497 return false;
1498 }
1499
1500 // ----------------------------------------------------------------------------
1501 // Editing
1502 // ----------------------------------------------------------------------------
1503
1504 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1505 {
1506 // Set selection and remove it
1507 DoSetSelection(from, to, false /* don't scroll caret into view */);
1508
1509 DoWriteText(value);
1510 }
1511
1512 void wxTextCtrl::Remove(long from, long to)
1513 {
1514 Replace(from, to, wxEmptyString);
1515 }
1516
1517 bool wxTextCtrl::IsModified() const
1518 {
1519 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1520 }
1521
1522 void wxTextCtrl::MarkDirty()
1523 {
1524 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1525 }
1526
1527 void wxTextCtrl::DiscardEdits()
1528 {
1529 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1530 }
1531
1532 int wxTextCtrl::GetNumberOfLines() const
1533 {
1534 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1535 }
1536
1537 // ----------------------------------------------------------------------------
1538 // Positions <-> coords
1539 // ----------------------------------------------------------------------------
1540
1541 long wxTextCtrl::XYToPosition(long x, long y) const
1542 {
1543 // This gets the char index for the _beginning_ of this line
1544 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1545
1546 return charIndex + x;
1547 }
1548
1549 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1550 {
1551 HWND hWnd = GetHwnd();
1552
1553 // This gets the line number containing the character
1554 long lineNo;
1555 #if wxUSE_RICHEDIT
1556 if ( IsRich() )
1557 {
1558 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1559 }
1560 else
1561 #endif // wxUSE_RICHEDIT
1562 {
1563 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1564 }
1565
1566 if ( lineNo == -1 )
1567 {
1568 // no such line
1569 return false;
1570 }
1571
1572 // This gets the char index for the _beginning_ of this line
1573 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1574 if ( charIndex == -1 )
1575 {
1576 return false;
1577 }
1578
1579 // The X position must therefore be the different between pos and charIndex
1580 if ( x )
1581 *x = pos - charIndex;
1582 if ( y )
1583 *y = lineNo;
1584
1585 return true;
1586 }
1587
1588 wxTextCtrlHitTestResult
1589 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1590 {
1591 // first get the position from Windows
1592 LPARAM lParam;
1593
1594 #if wxUSE_RICHEDIT
1595 POINTL ptl;
1596 if ( IsRich() )
1597 {
1598 // for rich edit controls the position is passed iva the struct fields
1599 ptl.x = pt.x;
1600 ptl.y = pt.y;
1601 lParam = (LPARAM)&ptl;
1602 }
1603 else
1604 #endif // wxUSE_RICHEDIT
1605 {
1606 // for the plain ones, we are limited to 16 bit positions which are
1607 // combined in a single 32 bit value
1608 lParam = MAKELPARAM(pt.x, pt.y);
1609 }
1610
1611 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1612
1613 if ( pos == -1 )
1614 {
1615 // this seems to indicate an error...
1616 return wxTE_HT_UNKNOWN;
1617 }
1618
1619 #if wxUSE_RICHEDIT
1620 if ( !IsRich() )
1621 #endif // wxUSE_RICHEDIT
1622 {
1623 // for plain EDIT controls the higher word contains something else
1624 pos = LOWORD(pos);
1625 }
1626
1627
1628 // next determine where it is relatively to our point: EM_CHARFROMPOS
1629 // always returns the closest character but we need to be more precise, so
1630 // double check that we really are where it pretends
1631 POINTL ptReal;
1632
1633 #if wxUSE_RICHEDIT
1634 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1635 // we don't know how to do it
1636 if ( IsRich() )
1637 {
1638 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1639 }
1640 else
1641 #endif // wxUSE_RICHEDIT
1642 {
1643 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1644
1645 if ( lRc == -1 )
1646 {
1647 // this is apparently returned when pos corresponds to the last
1648 // position
1649 ptReal.x =
1650 ptReal.y = 0;
1651 }
1652 else
1653 {
1654 ptReal.x = LOWORD(lRc);
1655 ptReal.y = HIWORD(lRc);
1656 }
1657 }
1658
1659 wxTextCtrlHitTestResult rc;
1660
1661 if ( pt.y > ptReal.y + GetCharHeight() )
1662 rc = wxTE_HT_BELOW;
1663 else if ( pt.x > ptReal.x + GetCharWidth() )
1664 rc = wxTE_HT_BEYOND;
1665 else
1666 rc = wxTE_HT_ON_TEXT;
1667
1668 if ( posOut )
1669 *posOut = pos;
1670
1671 return rc;
1672 }
1673
1674 // ----------------------------------------------------------------------------
1675 //
1676 // ----------------------------------------------------------------------------
1677
1678 void wxTextCtrl::ShowPosition(long pos)
1679 {
1680 HWND hWnd = GetHwnd();
1681
1682 // To scroll to a position, we pass the number of lines and characters
1683 // to scroll *by*. This means that we need to:
1684 // (1) Find the line position of the current line.
1685 // (2) Find the line position of pos.
1686 // (3) Scroll by (pos - current).
1687 // For now, ignore the horizontal scrolling.
1688
1689 // Is this where scrolling is relative to - the line containing the caret?
1690 // Or is the first visible line??? Try first visible line.
1691 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1692
1693 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1694
1695 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1696
1697 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1698
1699 if (linesToScroll != 0)
1700 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1701 }
1702
1703 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1704 {
1705 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1706 }
1707
1708 int wxTextCtrl::GetLineLength(long lineNo) const
1709 {
1710 long pos = XYToPosition(0, lineNo);
1711
1712 return GetLengthOfLineContainingPos(pos);
1713 }
1714
1715 wxString wxTextCtrl::GetLineText(long lineNo) const
1716 {
1717 size_t len = (size_t)GetLineLength(lineNo) + 1;
1718
1719 // there must be at least enough place for the length WORD in the
1720 // buffer
1721 len += sizeof(WORD);
1722
1723 wxString str;
1724 {
1725 wxStringBufferLength tmp(str, len);
1726 wxChar *buf = tmp;
1727
1728 *(WORD *)buf = (WORD)len;
1729 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1730
1731 #if wxUSE_RICHEDIT
1732 if ( IsRich() )
1733 {
1734 // remove the '\r' returned by the rich edit control, the user code
1735 // should never see it
1736 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1737 {
1738 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1739 // here and "\n" below
1740 buf[len - 2] = _T('\n');
1741 len--;
1742 }
1743 else if ( buf[len - 1] == _T('\r') )
1744 {
1745 // richedit 2.0+ uses only "\r", replace it with "\n"
1746 buf[len - 1] = _T('\n');
1747 }
1748 }
1749 #endif // wxUSE_RICHEDIT
1750
1751 // remove the '\n' at the end, if any (this is how this function is
1752 // supposed to work according to the docs)
1753 if ( buf[len - 1] == _T('\n') )
1754 {
1755 len--;
1756 }
1757
1758 buf[len] = 0;
1759 tmp.SetLength(len);
1760 }
1761
1762 return str;
1763 }
1764
1765 void wxTextCtrl::SetMaxLength(unsigned long len)
1766 {
1767 #if wxUSE_RICHEDIT
1768 if ( IsRich() )
1769 {
1770 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1771 }
1772 else
1773 #endif // wxUSE_RICHEDIT
1774 {
1775 if ( len >= 0xffff )
1776 {
1777 // this will set it to a platform-dependent maximum (much more
1778 // than 64Kb under NT)
1779 len = 0;
1780 }
1781
1782 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1783 }
1784 }
1785
1786 // ----------------------------------------------------------------------------
1787 // Undo/redo
1788 // ----------------------------------------------------------------------------
1789
1790 void wxTextCtrl::Undo()
1791 {
1792 if (CanUndo())
1793 {
1794 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1795 }
1796 }
1797
1798 void wxTextCtrl::Redo()
1799 {
1800 if (CanRedo())
1801 {
1802 #if wxUSE_RICHEDIT
1803 if (GetRichVersion() > 1)
1804 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1805 else
1806 #endif
1807 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1808 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1809 }
1810 }
1811
1812 bool wxTextCtrl::CanUndo() const
1813 {
1814 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1815 }
1816
1817 bool wxTextCtrl::CanRedo() const
1818 {
1819 #if wxUSE_RICHEDIT
1820 if (GetRichVersion() > 1)
1821 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1822 else
1823 #endif
1824 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1825 }
1826
1827 // ----------------------------------------------------------------------------
1828 // caret handling (Windows only)
1829 // ----------------------------------------------------------------------------
1830
1831 bool wxTextCtrl::ShowNativeCaret(bool show)
1832 {
1833 if ( show != m_isNativeCaretShown )
1834 {
1835 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1836 {
1837 // not an error, may simply indicate that it's not shown/hidden
1838 // yet (i.e. it had been hidden/showh 2 times before)
1839 return false;
1840 }
1841
1842 m_isNativeCaretShown = show;
1843 }
1844
1845 return true;
1846 }
1847
1848 // ----------------------------------------------------------------------------
1849 // implemenation details
1850 // ----------------------------------------------------------------------------
1851
1852 void wxTextCtrl::Command(wxCommandEvent & event)
1853 {
1854 SetValue(event.GetString());
1855 ProcessCommand (event);
1856 }
1857
1858 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1859 {
1860 // By default, load the first file into the text window.
1861 if (event.GetNumberOfFiles() > 0)
1862 {
1863 LoadFile(event.GetFiles()[0]);
1864 }
1865 }
1866
1867 // ----------------------------------------------------------------------------
1868 // kbd input processing
1869 // ----------------------------------------------------------------------------
1870
1871 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1872 {
1873 // check for our special keys here: if we don't do it and the parent frame
1874 // uses them as accelerators, they wouldn't work at all, so we disable
1875 // usual preprocessing for them
1876 if ( msg->message == WM_KEYDOWN )
1877 {
1878 const WPARAM vkey = msg->wParam;
1879 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1880 {
1881 // Alt-Backspace is accelerator for "Undo"
1882 if ( vkey == VK_BACK )
1883 return false;
1884 }
1885 else // no Alt
1886 {
1887 // we want to process some Ctrl-foo and Shift-bar but no key
1888 // combinations without either Ctrl or Shift nor with both of them
1889 // pressed
1890 const int ctrl = wxIsCtrlDown(),
1891 shift = wxIsShiftDown();
1892 switch ( ctrl + shift )
1893 {
1894 default:
1895 wxFAIL_MSG( _T("how many modifiers have we got?") );
1896 // fall through
1897
1898 case 0:
1899 if ( IsMultiLine() && vkey == VK_RETURN )
1900 return false;
1901 // fall through
1902 case 2:
1903 break;
1904
1905 case 1:
1906 // either Ctrl or Shift pressed
1907 if ( ctrl )
1908 {
1909 switch ( vkey )
1910 {
1911 case 'C':
1912 case 'V':
1913 case 'X':
1914 case VK_INSERT:
1915 case VK_DELETE:
1916 case VK_HOME:
1917 case VK_END:
1918 return false;
1919 }
1920 }
1921 else // Shift is pressed
1922 {
1923 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1924 return false;
1925 }
1926 }
1927 }
1928 }
1929
1930 return wxControl::MSWShouldPreProcessMessage(msg);
1931 }
1932
1933 void wxTextCtrl::OnChar(wxKeyEvent& event)
1934 {
1935 switch ( event.GetKeyCode() )
1936 {
1937 case WXK_RETURN:
1938 {
1939 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1940 InitCommandEvent(event);
1941 event.SetString(GetValue());
1942 if ( GetEventHandler()->ProcessEvent(event) )
1943 if ( !HasFlag(wxTE_MULTILINE) )
1944 return;
1945 //else: multiline controls need Enter for themselves
1946 }
1947 break;
1948
1949 case WXK_TAB:
1950 // ok, so this is getting absolutely ridiculous but I don't see
1951 // any other way to fix this bug: when a multiline text control is
1952 // inside a wxFrame, we need to generate the navigation event as
1953 // otherwise nothing happens at all, but when the same control is
1954 // created inside a dialog, IsDialogMessage() *does* switch focus
1955 // all by itself and so if we do it here as well, it is advanced
1956 // twice and goes to the next control... to prevent this from
1957 // happening we're doing this ugly check, the logic being that if
1958 // we don't have focus then it had been already changed to the next
1959 // control
1960 //
1961 // the right thing to do would, of course, be to understand what
1962 // the hell is IsDialogMessage() doing but this is beyond my feeble
1963 // forces at the moment unfortunately
1964 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1965 {
1966 if ( FindFocus() == this )
1967 {
1968 int flags = 0;
1969 if (!event.ShiftDown())
1970 flags |= wxNavigationKeyEvent::IsForward ;
1971 if (event.ControlDown())
1972 flags |= wxNavigationKeyEvent::WinChange ;
1973 if (Navigate(flags))
1974 return;
1975 }
1976 }
1977 else
1978 {
1979 // Insert tab since calling the default Windows handler
1980 // doesn't seem to do it
1981 WriteText(wxT("\t"));
1982 return;
1983 }
1984 break;
1985 }
1986
1987 // no, we didn't process it
1988 event.Skip();
1989 }
1990
1991 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1992 {
1993 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1994
1995 switch ( nMsg )
1996 {
1997 case WM_GETDLGCODE:
1998 {
1999 // we always want the chars and the arrows: the arrows for
2000 // navigation and the chars because we want Ctrl-C to work even
2001 // in a read only control
2002 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
2003
2004 if ( IsEditable() )
2005 {
2006 // we may have several different cases:
2007 // 1. normal: both TAB and ENTER are used for navigation
2008 // 2. ctrl wants TAB for itself: ENTER is used to pass to
2009 // the next control in the dialog
2010 // 3. ctrl wants ENTER for itself: TAB is used for dialog
2011 // navigation
2012 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
2013 // go to the next control (we need some way to do it)
2014
2015 // multiline controls should always get ENTER for themselves
2016 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
2017 lDlgCode |= DLGC_WANTMESSAGE;
2018
2019 if ( HasFlag(wxTE_PROCESS_TAB) )
2020 lDlgCode |= DLGC_WANTTAB;
2021
2022 lRc |= lDlgCode;
2023 }
2024 else // !editable
2025 {
2026 // NB: use "=", not "|=" as the base class version returns
2027 // the same flags is this state as usual (i.e.
2028 // including DLGC_WANTMESSAGE). This is strange (how
2029 // does it work in the native Win32 apps?) but for now
2030 // live with it.
2031 lRc = lDlgCode;
2032 }
2033 }
2034 break;
2035
2036 case WM_CUT:
2037 case WM_COPY:
2038 case WM_PASTE:
2039 if ( HandleClipboardEvent(nMsg) )
2040 lRc = 0;
2041 break;
2042 }
2043
2044 return lRc;
2045 }
2046
2047 // ----------------------------------------------------------------------------
2048 // text control event processing
2049 // ----------------------------------------------------------------------------
2050
2051 bool wxTextCtrl::SendUpdateEvent()
2052 {
2053 switch ( m_updatesCount )
2054 {
2055 case 0:
2056 // remember that we've got an update
2057 m_updatesCount++;
2058 break;
2059
2060 case 1:
2061 // we had already sent one event since the last control modification
2062 return false;
2063
2064 default:
2065 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
2066 // fall through
2067
2068 case -1:
2069 // we hadn't updated the control ourselves, this event comes from
2070 // the user, don't need to ignore it nor update the count
2071 break;
2072
2073 case -2:
2074 // the control was updated programmatically and we do NOT want to
2075 // send events
2076 return false;
2077 }
2078
2079 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
2080 InitCommandEvent(event);
2081
2082 return ProcessCommand(event);
2083 }
2084
2085 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
2086 {
2087 switch ( param )
2088 {
2089 case EN_SETFOCUS:
2090 case EN_KILLFOCUS:
2091 {
2092 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
2093 : wxEVT_SET_FOCUS,
2094 m_windowId);
2095 event.SetEventObject(this);
2096 GetEventHandler()->ProcessEvent(event);
2097 }
2098 break;
2099
2100 case EN_CHANGE:
2101 SendUpdateEvent();
2102 break;
2103
2104 case EN_MAXTEXT:
2105 // the text size limit has been hit -- try to increase it
2106 if ( !AdjustSpaceLimit() )
2107 {
2108 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2109 InitCommandEvent(event);
2110 event.SetString(GetValue());
2111 ProcessCommand(event);
2112 }
2113 break;
2114
2115 // the other edit notification messages are not processed
2116 default:
2117 return false;
2118 }
2119
2120 // processed
2121 return true;
2122 }
2123
2124 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2125 {
2126 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2127 return MSWControlColorDisabled(hDC);
2128
2129 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2130 }
2131
2132 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2133 {
2134 // HACK: we try to automatically extend the limit for the amount of text
2135 // to allow (interactively) entering more than 64Kb of text under
2136 // Win9x but we shouldn't reset the text limit which was previously
2137 // set explicitly with SetMaxLength()
2138 //
2139 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2140 // know the limit we set (if any). We could solve this by storing the
2141 // limit we set in wxTextCtrl but to save space we prefer to simply
2142 // test here the actual limit value: we consider that SetMaxLength()
2143 // can only be called for small values while EN_MAXTEXT is only sent
2144 // for large values (in practice the default limit seems to be 30000
2145 // but make it smaller just to be on the safe side)
2146 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2147 return *len < 10001;
2148
2149 }
2150
2151 bool wxTextCtrl::AdjustSpaceLimit()
2152 {
2153 unsigned int limit;
2154 if ( HasSpaceLimit(&limit) )
2155 return false;
2156
2157 unsigned int len = ::GetWindowTextLength(GetHwnd());
2158 if ( len >= limit )
2159 {
2160 // increment in 32Kb chunks
2161 SetMaxLength(len + 0x8000);
2162 }
2163
2164 // we changed the limit
2165 return true;
2166 }
2167
2168 bool wxTextCtrl::AcceptsFocus() const
2169 {
2170 // we don't want focus if we can't be edited unless we're a multiline
2171 // control because then it might be still nice to get focus from keyboard
2172 // to be able to scroll it without mouse
2173 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2174 }
2175
2176 wxSize wxTextCtrl::DoGetBestSize() const
2177 {
2178 int cx, cy;
2179 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2180
2181 int wText = DEFAULT_ITEM_WIDTH;
2182
2183 int hText = cy;
2184 if ( m_windowStyle & wxTE_MULTILINE )
2185 {
2186 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2187 }
2188 //else: for single line control everything is ok
2189
2190 // we have to add the adjustments for the control height only once, not
2191 // once per line, so do it after multiplication above
2192 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2193
2194 return wxSize(wText, hText);
2195 }
2196
2197 // ----------------------------------------------------------------------------
2198 // standard handlers for standard edit menu events
2199 // ----------------------------------------------------------------------------
2200
2201 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2202 {
2203 Cut();
2204 }
2205
2206 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2207 {
2208 Copy();
2209 }
2210
2211 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2212 {
2213 Paste();
2214 }
2215
2216 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2217 {
2218 Undo();
2219 }
2220
2221 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2222 {
2223 Redo();
2224 }
2225
2226 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2227 {
2228 long from, to;
2229 GetSelection(& from, & to);
2230 if (from != -1 && to != -1)
2231 Remove(from, to);
2232 }
2233
2234 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2235 {
2236 SetSelection(-1, -1);
2237 }
2238
2239 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2240 {
2241 event.Enable( CanCut() );
2242 }
2243
2244 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2245 {
2246 event.Enable( CanCopy() );
2247 }
2248
2249 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2250 {
2251 event.Enable( CanPaste() );
2252 }
2253
2254 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2255 {
2256 event.Enable( CanUndo() );
2257 }
2258
2259 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2260 {
2261 event.Enable( CanRedo() );
2262 }
2263
2264 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2265 {
2266 long from, to;
2267 GetSelection(& from, & to);
2268 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2269 }
2270
2271 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2272 {
2273 event.Enable(GetLastPosition() > 0);
2274 }
2275
2276 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2277 {
2278 #if wxUSE_RICHEDIT
2279 if (IsRich())
2280 {
2281 if (!m_privateContextMenu)
2282 {
2283 m_privateContextMenu = new wxMenu;
2284 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2285 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2286 m_privateContextMenu->AppendSeparator();
2287 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2288 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2289 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2290 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2291 m_privateContextMenu->AppendSeparator();
2292 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2293 }
2294 PopupMenu(m_privateContextMenu);
2295 return;
2296 }
2297 else
2298 #endif
2299 event.Skip();
2300 }
2301
2302 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2303 {
2304 // be sure the caret remains invisible if the user had hidden it
2305 if ( !m_isNativeCaretShown )
2306 {
2307 ::HideCaret(GetHwnd());
2308 }
2309 }
2310
2311 // ----------------------------------------------------------------------------
2312 // Default colors for MSW text control
2313 //
2314 // Set default background color to the native white instead of
2315 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2316 // ----------------------------------------------------------------------------
2317
2318 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2319 {
2320 wxVisualAttributes attrs;
2321 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2322 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2323 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2324
2325 return attrs;
2326 }
2327
2328 // the rest of the file only deals with the rich edit controls
2329 #if wxUSE_RICHEDIT
2330
2331 // ----------------------------------------------------------------------------
2332 // EN_LINK processing
2333 // ----------------------------------------------------------------------------
2334
2335 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2336 {
2337 NMHDR *hdr = (NMHDR* )lParam;
2338 switch ( hdr->code )
2339 {
2340 case EN_MSGFILTER:
2341 {
2342 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2343 UINT msg = msgf->msg;
2344
2345 // this is a bit crazy but richedit 1.0 sends us all mouse
2346 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2347 // generate the wxWin events for this message manually
2348 //
2349 // NB: in fact, this is still not totally correct as it does
2350 // send us WM_LBUTTONUP if the selection was cleared by the
2351 // last click -- so currently we get 2 events in this case,
2352 // but as I don't see any obvious way to check for this I
2353 // leave this code in place because it's still better than
2354 // not getting left up events at all
2355 if ( msg == WM_LBUTTONUP )
2356 {
2357 WXUINT flags = msgf->wParam;
2358 int x = GET_X_LPARAM(msgf->lParam),
2359 y = GET_Y_LPARAM(msgf->lParam);
2360
2361 HandleMouseEvent(msg, x, y, flags);
2362 }
2363 }
2364
2365 // return true to process the event (and false to ignore it)
2366 return true;
2367
2368 case EN_LINK:
2369 {
2370 const ENLINK *enlink = (ENLINK *)hdr;
2371
2372 switch ( enlink->msg )
2373 {
2374 case WM_SETCURSOR:
2375 // ok, so it is hardcoded - do we really nee to
2376 // customize it?
2377 {
2378 wxCursor cur(wxCURSOR_HAND);
2379 ::SetCursor(GetHcursorOf(cur));
2380 *result = TRUE;
2381 break;
2382 }
2383
2384 case WM_MOUSEMOVE:
2385 case WM_LBUTTONDOWN:
2386 case WM_LBUTTONUP:
2387 case WM_LBUTTONDBLCLK:
2388 case WM_RBUTTONDOWN:
2389 case WM_RBUTTONUP:
2390 case WM_RBUTTONDBLCLK:
2391 // send a mouse event
2392 {
2393 static const wxEventType eventsMouse[] =
2394 {
2395 wxEVT_MOTION,
2396 wxEVT_LEFT_DOWN,
2397 wxEVT_LEFT_UP,
2398 wxEVT_LEFT_DCLICK,
2399 wxEVT_RIGHT_DOWN,
2400 wxEVT_RIGHT_UP,
2401 wxEVT_RIGHT_DCLICK,
2402 };
2403
2404 // the event ids are consecutive
2405 wxMouseEvent
2406 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2407
2408 InitMouseEvent(evtMouse,
2409 GET_X_LPARAM(enlink->lParam),
2410 GET_Y_LPARAM(enlink->lParam),
2411 enlink->wParam);
2412
2413 wxTextUrlEvent event(m_windowId, evtMouse,
2414 enlink->chrg.cpMin,
2415 enlink->chrg.cpMax);
2416
2417 InitCommandEvent(event);
2418
2419 *result = ProcessCommand(event);
2420 }
2421 break;
2422 }
2423 }
2424 return true;
2425 }
2426
2427 // not processed, leave it to the base class
2428 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2429 }
2430
2431 #if wxUSE_DRAG_AND_DROP
2432
2433 void wxTextCtrl::SetDropTarget(wxDropTarget *dropTarget)
2434 {
2435 if ( m_dropTarget == wxRICHTEXT_DEFAULT_DROPTARGET )
2436 {
2437 // get rid of the built-in drop target
2438 ::RevokeDragDrop(GetHwnd());
2439 m_dropTarget = NULL;
2440 }
2441
2442 wxTextCtrlBase::SetDropTarget(dropTarget);
2443 }
2444
2445 #endif // wxUSE_DRAG_AND_DROP
2446
2447 // ----------------------------------------------------------------------------
2448 // colour setting for the rich edit controls
2449 // ----------------------------------------------------------------------------
2450
2451 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2452 {
2453 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2454 {
2455 // colour didn't really change
2456 return false;
2457 }
2458
2459 if ( IsRich() )
2460 {
2461 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2462 // EM_SETBKGNDCOLOR additionally
2463 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2464 }
2465
2466 return true;
2467 }
2468
2469 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2470 {
2471 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2472 {
2473 // colour didn't really change
2474 return false;
2475 }
2476
2477 if ( IsRich() )
2478 {
2479 // change the colour of everything
2480 CHARFORMAT cf;
2481 wxZeroMemory(cf);
2482 cf.cbSize = sizeof(cf);
2483 cf.dwMask = CFM_COLOR;
2484 cf.crTextColor = wxColourToRGB(colour);
2485 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2486 }
2487
2488 return true;
2489 }
2490
2491 // ----------------------------------------------------------------------------
2492 // styling support for rich edit controls
2493 // ----------------------------------------------------------------------------
2494
2495 #if wxUSE_RICHEDIT
2496
2497 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2498 {
2499 if ( !IsRich() )
2500 {
2501 // can't do it with normal text control
2502 return false;
2503 }
2504
2505 // the richedit 1.0 doesn't handle setting background colour, so don't
2506 // even try to do anything if it's the only thing we want to change
2507 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2508 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2509 !style.HasTabs() )
2510 {
2511 // nothing to do: return true if there was really nothing to do and
2512 // false if we failed to set bg colour
2513 return !style.HasBackgroundColour();
2514 }
2515
2516 // order the range if needed
2517 if ( start > end )
2518 {
2519 long tmp = start;
2520 start = end;
2521 end = tmp;
2522 }
2523
2524 // we can only change the format of the selection, so select the range we
2525 // want and restore the old selection later
2526 long startOld, endOld;
2527 GetSelection(&startOld, &endOld);
2528
2529 // but do we really have to change the selection?
2530 bool changeSel = start != startOld || end != endOld;
2531
2532 if ( changeSel )
2533 {
2534 DoSetSelection(start, end, false /* don't scroll caret into view */);
2535 }
2536
2537 // initialize CHARFORMAT struct
2538 #if wxUSE_RICHEDIT2
2539 CHARFORMAT2 cf;
2540 #else
2541 CHARFORMAT cf;
2542 #endif
2543
2544 wxZeroMemory(cf);
2545
2546 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2547 // CHARFORMAT in that case
2548 #if wxUSE_RICHEDIT2
2549 if ( m_verRichEdit == 1 )
2550 {
2551 // this is the only thing the control is going to grok
2552 cf.cbSize = sizeof(CHARFORMAT);
2553 }
2554 else
2555 #endif
2556 {
2557 // CHARFORMAT or CHARFORMAT2
2558 cf.cbSize = sizeof(cf);
2559 }
2560
2561 if ( style.HasFont() )
2562 {
2563 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2564 // but using it doesn't seem to hurt neither so leaving it for now
2565
2566 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2567 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2568
2569 // fill in data from LOGFONT but recalculate lfHeight because we need
2570 // the real height in twips and not the negative number which
2571 // wxFillLogFont() returns (this is correct in general and works with
2572 // the Windows font mapper, but not here)
2573 LOGFONT lf;
2574 wxFillLogFont(&lf, &style.GetFont());
2575 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2576 cf.bCharSet = lf.lfCharSet;
2577 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2578 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2579
2580 // also deal with underline/italic/bold attributes: note that we must
2581 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2582 // style to allow clearing it
2583 if ( lf.lfItalic )
2584 {
2585 cf.dwEffects |= CFE_ITALIC;
2586 }
2587
2588 if ( lf.lfWeight == FW_BOLD )
2589 {
2590 cf.dwEffects |= CFE_BOLD;
2591 }
2592
2593 if ( lf.lfUnderline )
2594 {
2595 cf.dwEffects |= CFE_UNDERLINE;
2596 }
2597
2598 // strikeout fonts are not supported by wxWidgets
2599 }
2600
2601 if ( style.HasTextColour() )
2602 {
2603 cf.dwMask |= CFM_COLOR;
2604 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2605 }
2606
2607 #if wxUSE_RICHEDIT2
2608 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2609 {
2610 cf.dwMask |= CFM_BACKCOLOR;
2611 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2612 }
2613 #endif // wxUSE_RICHEDIT2
2614
2615 // do format the selection
2616 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2617 SCF_SELECTION, (LPARAM)&cf) != 0;
2618 if ( !ok )
2619 {
2620 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2621 }
2622
2623 // now do the paragraph formatting
2624 PARAFORMAT2 pf;
2625 wxZeroMemory(pf);
2626 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2627 // PARAFORMAT in that case
2628 #if wxUSE_RICHEDIT2
2629 if ( m_verRichEdit == 1 )
2630 {
2631 // this is the only thing the control is going to grok
2632 pf.cbSize = sizeof(PARAFORMAT);
2633 }
2634 else
2635 #endif
2636 {
2637 // PARAFORMAT or PARAFORMAT2
2638 pf.cbSize = sizeof(pf);
2639 }
2640
2641 if (style.HasAlignment())
2642 {
2643 pf.dwMask |= PFM_ALIGNMENT;
2644 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2645 pf.wAlignment = PFA_RIGHT;
2646 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2647 pf.wAlignment = PFA_CENTER;
2648 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2649 pf.wAlignment = PFA_JUSTIFY;
2650 else
2651 pf.wAlignment = PFA_LEFT;
2652 }
2653
2654 if (style.HasLeftIndent())
2655 {
2656 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2657
2658 // Convert from 1/10 mm to TWIPS
2659 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2660 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2661 }
2662
2663 if (style.HasRightIndent())
2664 {
2665 pf.dwMask |= PFM_RIGHTINDENT;
2666
2667 // Convert from 1/10 mm to TWIPS
2668 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2669 }
2670
2671 if (style.HasTabs())
2672 {
2673 pf.dwMask |= PFM_TABSTOPS;
2674
2675 const wxArrayInt& tabs = style.GetTabs();
2676
2677 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2678 size_t i;
2679 for (i = 0; i < (size_t) pf.cTabCount; i++)
2680 {
2681 // Convert from 1/10 mm to TWIPS
2682 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2683 }
2684 }
2685
2686 #if wxUSE_RICHEDIT2
2687 if ( m_verRichEdit > 1 )
2688 {
2689 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2690 {
2691 // Use RTL paragraphs in RTL mode to get proper layout
2692 pf.dwMask |= PFM_RTLPARA;
2693 pf.wEffects |= PFE_RTLPARA;
2694 }
2695 }
2696 #endif // wxUSE_RICHEDIT2
2697
2698 if ( pf.dwMask )
2699 {
2700 // do format the selection
2701 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2702 0, (LPARAM) &pf) != 0;
2703 if ( !ok )
2704 {
2705 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2706 }
2707 }
2708
2709 if ( changeSel )
2710 {
2711 // restore the original selection
2712 DoSetSelection(startOld, endOld, false);
2713 }
2714
2715 return ok;
2716 }
2717
2718 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2719 {
2720 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2721 return false;
2722
2723 if ( IsEditable() )
2724 {
2725 // we have to do this or the style wouldn't apply for the text typed by
2726 // the user
2727 wxTextPos posLast = GetLastPosition();
2728 SetStyle(posLast, posLast, m_defaultStyle);
2729 }
2730
2731 return true;
2732 }
2733
2734 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2735 {
2736 if ( !IsRich() )
2737 {
2738 // can't do it with normal text control
2739 return false;
2740 }
2741
2742 // initialize CHARFORMAT struct
2743 #if wxUSE_RICHEDIT2
2744 CHARFORMAT2 cf;
2745 #else
2746 CHARFORMAT cf;
2747 #endif
2748
2749 wxZeroMemory(cf);
2750
2751 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2752 // CHARFORMAT in that case
2753 #if wxUSE_RICHEDIT2
2754 if ( m_verRichEdit == 1 )
2755 {
2756 // this is the only thing the control is going to grok
2757 cf.cbSize = sizeof(CHARFORMAT);
2758 }
2759 else
2760 #endif
2761 {
2762 // CHARFORMAT or CHARFORMAT2
2763 cf.cbSize = sizeof(cf);
2764 }
2765 // we can only change the format of the selection, so select the range we
2766 // want and restore the old selection later
2767 long startOld, endOld;
2768 GetSelection(&startOld, &endOld);
2769
2770 // but do we really have to change the selection?
2771 bool changeSel = position != startOld || position != endOld;
2772
2773 if ( changeSel )
2774 {
2775 DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2776 }
2777
2778 // get the selection formatting
2779 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2780 SCF_SELECTION, (LPARAM)&cf) ;
2781
2782
2783 LOGFONT lf;
2784 lf.lfHeight = cf.yHeight;
2785 lf.lfWidth = 0;
2786 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2787 lf.lfClipPrecision = 0;
2788 lf.lfEscapement = 0;
2789 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2790
2791 //NOTE: we _MUST_ set each of these values to _something_ since we
2792 //do not call wxZeroMemory on the LOGFONT lf
2793 if (cf.dwEffects & CFE_ITALIC)
2794 lf.lfItalic = TRUE;
2795 else
2796 lf.lfItalic = FALSE;
2797
2798 lf.lfOrientation = 0;
2799 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2800 lf.lfQuality = 0;
2801
2802 if (cf.dwEffects & CFE_STRIKEOUT)
2803 lf.lfStrikeOut = TRUE;
2804 else
2805 lf.lfStrikeOut = FALSE;
2806
2807 if (cf.dwEffects & CFE_UNDERLINE)
2808 lf.lfUnderline = TRUE;
2809 else
2810 lf.lfUnderline = FALSE;
2811
2812 if (cf.dwEffects & CFE_BOLD)
2813 lf.lfWeight = FW_BOLD;
2814 else
2815 lf.lfWeight = FW_NORMAL;
2816
2817 wxFont font = wxCreateFontFromLogFont(& lf);
2818 if (font.Ok())
2819 {
2820 style.SetFont(font);
2821 }
2822 style.SetTextColour(wxColour(cf.crTextColor));
2823
2824 #if wxUSE_RICHEDIT2
2825 if ( m_verRichEdit != 1 )
2826 {
2827 // cf.dwMask |= CFM_BACKCOLOR;
2828 style.SetBackgroundColour(wxColour(cf.crBackColor));
2829 }
2830 #endif // wxUSE_RICHEDIT2
2831
2832 // now get the paragraph formatting
2833 PARAFORMAT2 pf;
2834 wxZeroMemory(pf);
2835 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2836 // PARAFORMAT in that case
2837 #if wxUSE_RICHEDIT2
2838 if ( m_verRichEdit == 1 )
2839 {
2840 // this is the only thing the control is going to grok
2841 pf.cbSize = sizeof(PARAFORMAT);
2842 }
2843 else
2844 #endif
2845 {
2846 // PARAFORMAT or PARAFORMAT2
2847 pf.cbSize = sizeof(pf);
2848 }
2849
2850 // do format the selection
2851 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2852
2853 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2854 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2855
2856 if (pf.wAlignment == PFA_CENTER)
2857 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2858 else if (pf.wAlignment == PFA_RIGHT)
2859 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2860 else if (pf.wAlignment == PFA_JUSTIFY)
2861 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2862 else
2863 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2864
2865 wxArrayInt tabStops;
2866 size_t i;
2867 for (i = 0; i < (size_t) pf.cTabCount; i++)
2868 {
2869 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2870 }
2871
2872 if ( changeSel )
2873 {
2874 // restore the original selection
2875 DoSetSelection(startOld, endOld, false);
2876 }
2877
2878 return true;
2879 }
2880
2881 #endif
2882
2883 // ----------------------------------------------------------------------------
2884 // wxRichEditModule
2885 // ----------------------------------------------------------------------------
2886
2887 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2888
2889 bool wxRichEditModule::OnInit()
2890 {
2891 // don't do anything - we will load it when needed
2892 return true;
2893 }
2894
2895 void wxRichEditModule::OnExit()
2896 {
2897 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2898 {
2899 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2900 {
2901 ::FreeLibrary(ms_hRichEdit[i]);
2902 ms_hRichEdit[i] = NULL;
2903 }
2904 }
2905 #if wxUSE_INKEDIT
2906 if (ms_inkEditLib.IsLoaded())
2907 ms_inkEditLib.Unload();
2908 #endif
2909 }
2910
2911 /* static */
2912 bool wxRichEditModule::Load(Version version)
2913 {
2914 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2915 {
2916 // we had already tried to load it and failed
2917 return false;
2918 }
2919
2920 if ( ms_hRichEdit[version] )
2921 {
2922 // we've already got this one
2923 return true;
2924 }
2925
2926 static const wxChar *dllnames[] =
2927 {
2928 _T("riched32"),
2929 _T("riched20"),
2930 _T("msftedit"),
2931 };
2932
2933 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2934 RichEditDllNamesVersionsMismatch );
2935
2936 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2937
2938 if ( !ms_hRichEdit[version] )
2939 {
2940 ms_hRichEdit[version] = INVALID_HINSTANCE;
2941
2942 return false;
2943 }
2944
2945 return true;
2946 }
2947
2948 #if wxUSE_INKEDIT
2949 // load the InkEdit library
2950 bool wxRichEditModule::LoadInkEdit()
2951 {
2952 static wxDynamicLibrary ms_inkEditLib;
2953 static bool ms_inkEditLibLoadAttemped;
2954 if (ms_inkEditLibLoadAttemped)
2955 ms_inkEditLib.IsLoaded();
2956
2957 ms_inkEditLibLoadAttemped = true;
2958
2959 wxLogNull logNull;
2960 return ms_inkEditLib.Load(wxT("inked"));
2961 }
2962 #endif
2963
2964
2965 #endif // wxUSE_RICHEDIT
2966
2967 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)
wxWidgets (Impactor)