/[pcsx2_0.9.7]/branch/r3113_0.9.7_beta/3rdparty/wxWidgets/src/msw/textctrl.cpp
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Contents of /branch/r3113_0.9.7_beta/3rdparty/wxWidgets/src/msw/textctrl.cpp

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Revision 32 - (show annotations) (download)
Tue Sep 7 03:29:01 2010 UTC (9 years, 11 months ago) by william
File size: 87479 byte(s)
branching from upstream revision (http://pcsx2.googlecode.com/svn/trunk
): r3113 to
https://svn.netsolutions.dnsalias.com/websvn/ps2/pcsx2/pcsx2_0.9.7/branch/r3113_0.9.7_beta
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: textctrl.cpp 56394 2008-10-17 11:31:22Z VZ $
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 #endif
41
42 #include "wx/sysopt.h"
43
44 #if wxUSE_CLIPBOARD
45 #include "wx/clipbrd.h"
46 #endif
47
48 #include "wx/textfile.h"
49
50 #include <windowsx.h>
51
52 #include "wx/msw/private.h"
53 #include "wx/msw/winundef.h"
54 #include "wx/msw/mslu.h"
55
56 #include <string.h>
57 #include <stdlib.h>
58
59 #ifndef __WXWINCE__
60 #include <sys/types.h>
61 #endif
62
63 #if wxUSE_RICHEDIT
64
65 #if wxUSE_INKEDIT
66 #include "wx/dynlib.h"
67 #endif
68
69 // old mingw32 has richedit stuff directly in windows.h and doesn't have
70 // richedit.h at all
71 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
72 #include <richedit.h>
73 #endif
74
75 #endif // wxUSE_RICHEDIT
76
77 #include "wx/msw/missing.h"
78
79 // ----------------------------------------------------------------------------
80 // private classes
81 // ----------------------------------------------------------------------------
82
83 #if wxUSE_RICHEDIT
84
85 // this module initializes RichEdit DLL(s) if needed
86 class wxRichEditModule : public wxModule
87 {
88 public:
89 enum Version
90 {
91 Version_1, // riched32.dll
92 Version_2or3, // both use riched20.dll
93 Version_41, // msftedit.dll (XP SP1 and Windows 2003)
94 Version_Max
95 };
96
97 virtual bool OnInit();
98 virtual void OnExit();
99
100 // load the richedit DLL for the specified version of rich edit
101 static bool Load(Version version);
102
103 #if wxUSE_INKEDIT
104 // load the InkEdit library
105 static bool LoadInkEdit();
106 #endif
107
108 private:
109 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
110 static HINSTANCE ms_hRichEdit[Version_Max];
111
112 #if wxUSE_INKEDIT
113 static wxDynamicLibrary ms_inkEditLib;
114 static bool ms_inkEditLibLoadAttemped;
115 #endif
116
117 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
118 };
119
120 HINSTANCE wxRichEditModule::ms_hRichEdit[Version_Max] = { NULL, NULL, NULL };
121
122 #if wxUSE_INKEDIT
123 wxDynamicLibrary wxRichEditModule::ms_inkEditLib;
124 bool wxRichEditModule::ms_inkEditLibLoadAttemped = false;
125 #endif
126
127 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
128
129 #endif // wxUSE_RICHEDIT
130
131 // a small class used to set m_updatesCount to 0 (to filter duplicate events if
132 // necessary) and to reset it back to -1 afterwards
133 class UpdatesCountFilter
134 {
135 public:
136 UpdatesCountFilter(int& count)
137 : m_count(count)
138 {
139 wxASSERT_MSG( m_count == -1 || m_count == -2,
140 _T("wrong initial m_updatesCount value") );
141
142 if (m_count != -2)
143 m_count = 0;
144 //else: we don't want to count how many update events we get as we're going
145 // to ignore all of them
146 }
147
148 ~UpdatesCountFilter()
149 {
150 m_count = -1;
151 }
152
153 // return true if an event has been received
154 bool GotUpdate() const
155 {
156 return m_count == 1;
157 }
158
159 private:
160 int& m_count;
161
162 DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
163 };
164
165 // ----------------------------------------------------------------------------
166 // event tables and other macros
167 // ----------------------------------------------------------------------------
168
169 #if wxUSE_EXTENDED_RTTI
170 WX_DEFINE_FLAGS( wxTextCtrlStyle )
171
172 wxBEGIN_FLAGS( wxTextCtrlStyle )
173 // new style border flags, we put them first to
174 // use them for streaming out
175 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
176 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
177 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
178 wxFLAGS_MEMBER(wxBORDER_RAISED)
179 wxFLAGS_MEMBER(wxBORDER_STATIC)
180 wxFLAGS_MEMBER(wxBORDER_NONE)
181
182 // old style border flags
183 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
184 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
185 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
186 wxFLAGS_MEMBER(wxRAISED_BORDER)
187 wxFLAGS_MEMBER(wxSTATIC_BORDER)
188 wxFLAGS_MEMBER(wxBORDER)
189
190 // standard window styles
191 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
192 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
193 wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
194 wxFLAGS_MEMBER(wxWANTS_CHARS)
195 wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
196 wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
197 wxFLAGS_MEMBER(wxVSCROLL)
198 wxFLAGS_MEMBER(wxHSCROLL)
199
200 wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
201 wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
202 wxFLAGS_MEMBER(wxTE_MULTILINE)
203 wxFLAGS_MEMBER(wxTE_PASSWORD)
204 wxFLAGS_MEMBER(wxTE_READONLY)
205 wxFLAGS_MEMBER(wxHSCROLL)
206 wxFLAGS_MEMBER(wxTE_RICH)
207 wxFLAGS_MEMBER(wxTE_RICH2)
208 wxFLAGS_MEMBER(wxTE_AUTO_URL)
209 wxFLAGS_MEMBER(wxTE_NOHIDESEL)
210 wxFLAGS_MEMBER(wxTE_LEFT)
211 wxFLAGS_MEMBER(wxTE_CENTRE)
212 wxFLAGS_MEMBER(wxTE_RIGHT)
213 wxFLAGS_MEMBER(wxTE_DONTWRAP)
214 wxFLAGS_MEMBER(wxTE_CHARWRAP)
215 wxFLAGS_MEMBER(wxTE_WORDWRAP)
216
217 wxEND_FLAGS( wxTextCtrlStyle )
218
219 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
220
221 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
222 wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
223 wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
224
225 wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
226 wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
227 wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
228 wxEND_PROPERTIES_TABLE()
229
230 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
231 wxEND_HANDLERS_TABLE()
232
233 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
234 #else
235 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
236 #endif
237
238
239 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
240 EVT_CHAR(wxTextCtrl::OnChar)
241 EVT_KEY_DOWN(wxTextCtrl::OnKeyDown)
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 #else
308 // Standard text control already handles theming
309 if ((style & (wxTE_RICH|wxTE_RICH2)) && ((style & wxBORDER_MASK) == wxBORDER_DEFAULT))
310 style |= wxBORDER_THEME;
311 #endif
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 return true;
321 }
322
323 bool wxTextCtrl::MSWCreateText(const wxString& value,
324 const wxPoint& pos,
325 const wxSize& size)
326 {
327 // translate wxWin style flags to MSW ones
328 WXDWORD msStyle = MSWGetCreateWindowFlags();
329
330 // do create the control - either an EDIT or RICHEDIT
331 wxString windowClass = wxT("EDIT");
332
333 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
334 // A control that capitalizes the first letter
335 if ( HasFlag(wxTE_CAPITALIZE) )
336 windowClass = wxT("CAPEDIT");
337 #endif
338
339 #if wxUSE_RICHEDIT
340 if ( m_windowStyle & wxTE_AUTO_URL )
341 {
342 // automatic URL detection only works in RichEdit 2.0+
343 m_windowStyle |= wxTE_RICH2;
344 }
345
346 if ( m_windowStyle & wxTE_RICH2 )
347 {
348 // using richedit 2.0 implies using wxTE_RICH
349 m_windowStyle |= wxTE_RICH;
350 }
351
352 // we need to load the richedit DLL before creating the rich edit control
353 if ( m_windowStyle & wxTE_RICH )
354 {
355 // versions 2.0, 3.0 and 4.1 of rich edit are mostly compatible with
356 // each other but not with version 1.0, so we have separate flags for
357 // the version 1.0 and the others (and so m_verRichEdit may be 0 (plain
358 // EDIT control), 1 for version 1.0 or 2 for any higher version)
359 //
360 // notice that 1.0 has no Unicode support at all so in Unicode build we
361 // must use another version
362
363 #if wxUSE_UNICODE
364 m_verRichEdit = 2;
365 #else // !wxUSE_UNICODE
366 m_verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
367 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
368
369 #if wxUSE_INKEDIT
370 // First test if we can load an ink edit control. Normally, all edit
371 // controls will be made ink edit controls if a tablet environment is
372 // found (or if msw.inkedit != 0 and the InkEd.dll is present).
373 // However, an application can veto ink edit controls by either specifying
374 // msw.inkedit = 0 or by removing wxTE_RICH[2] from the style.
375 //
376 if ((wxSystemSettings::HasFeature(wxSYS_TABLET_PRESENT) || wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) != 0) &&
377 !(wxSystemOptions::HasOption(wxT("msw.inkedit")) && wxSystemOptions::GetOptionInt(wxT("msw.inkedit")) == 0))
378 {
379 if (wxRichEditModule::LoadInkEdit())
380 {
381 windowClass = INKEDIT_CLASS;
382
383 #if wxUSE_INKEDIT && wxUSE_RICHEDIT
384 m_isInkEdit = 1;
385 #endif
386
387 // Fake rich text version for other calls
388 m_verRichEdit = 2;
389 }
390 }
391 #endif
392
393 if (!IsInkEdit())
394 {
395 if ( m_verRichEdit == 2 )
396 {
397 if ( wxRichEditModule::Load(wxRichEditModule::Version_41) )
398 {
399 // yes, class name for version 4.1 really is 5.0
400 windowClass = _T("RICHEDIT50W");
401 }
402 else if ( wxRichEditModule::Load(wxRichEditModule::Version_2or3) )
403 {
404 windowClass = _T("RichEdit20")
405 #if wxUSE_UNICODE
406 _T("W");
407 #else // ANSI
408 _T("A");
409 #endif // Unicode/ANSI
410 }
411 else // failed to load msftedit.dll and riched20.dll
412 {
413 m_verRichEdit = 1;
414 }
415 }
416
417 if ( m_verRichEdit == 1 )
418 {
419 if ( wxRichEditModule::Load(wxRichEditModule::Version_1) )
420 {
421 windowClass = _T("RICHEDIT");
422 }
423 else // failed to load any richedit control DLL
424 {
425 // only give the error msg once if the DLL can't be loaded
426 static bool s_errorGiven = false; // MT ok as only used by GUI
427
428 if ( !s_errorGiven )
429 {
430 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
431
432 s_errorGiven = true;
433 }
434
435 m_verRichEdit = 0;
436 }
437 }
438 } // !useInkEdit
439 }
440 #endif // wxUSE_RICHEDIT
441
442 // we need to turn '\n's into "\r\n"s for the multiline controls
443 wxString valueWin;
444 if ( m_windowStyle & wxTE_MULTILINE )
445 {
446 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
447 }
448 else // single line
449 {
450 valueWin = value;
451 }
452
453 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
454 return false;
455
456 #if wxUSE_RICHEDIT
457 if (IsRich())
458 {
459 #if wxUSE_INKEDIT
460 if (IsInkEdit())
461 {
462 // Pass IEM_InsertText (0) as wParam, in order to have the ink always
463 // converted to text.
464 ::SendMessage(GetHwnd(), EM_SETINKINSERTMODE, 0, 0);
465
466 // Make sure the mouse can be used for input
467 ::SendMessage(GetHwnd(), EM_SETUSEMOUSEFORINPUT, 1, 0);
468 }
469 #endif
470
471 // enable the events we're interested in: we want to get EN_CHANGE as
472 // for the normal controls
473 LPARAM mask = ENM_CHANGE;
474
475 if (GetRichVersion() == 1 && !IsInkEdit())
476 {
477 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
478 // explained in its handler
479 mask |= ENM_MOUSEEVENTS;
480
481 // we also need to force the appearance of the vertical scrollbar
482 // initially as otherwise the control doesn't refresh correctly
483 // after resize: but once the vertical scrollbar had been shown
484 // (even if it's subsequently hidden) it does
485 //
486 // this is clearly a bug and for now it has been only noticed under
487 // Windows XP, so if we're sure it works correctly under other
488 // systems we could do this only for XP
489 SetSize(-1, 1); // 1 is small enough to force vert scrollbar
490 SetInitialSize(size);
491 }
492 else if ( m_windowStyle & wxTE_AUTO_URL )
493 {
494 mask |= ENM_LINK;
495
496 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
497 }
498
499 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
500 }
501 #endif // wxUSE_RICHEDIT
502
503 #ifndef __WXWINCE__
504 // Without this, if we pass the size in the constructor and then don't change it,
505 // the themed borders will be drawn incorrectly.
506 SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
507 SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
508 SWP_FRAMECHANGED);
509 #endif
510
511 return true;
512 }
513
514 // Make sure the window style (etc.) reflects the HWND style (roughly)
515 void wxTextCtrl::AdoptAttributesFromHWND()
516 {
517 wxWindow::AdoptAttributesFromHWND();
518
519 HWND hWnd = GetHwnd();
520 long style = ::GetWindowLong(hWnd, GWL_STYLE);
521
522 // retrieve the style to see whether this is an edit or richedit ctrl
523 #if wxUSE_RICHEDIT
524 wxString classname = wxGetWindowClass(GetHWND());
525
526 if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
527 {
528 m_verRichEdit = 0;
529 }
530 else // rich edit?
531 {
532 wxChar c;
533 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
534 {
535 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
536
537 m_verRichEdit = 0;
538 }
539 }
540 #endif // wxUSE_RICHEDIT
541
542 if (style & ES_MULTILINE)
543 m_windowStyle |= wxTE_MULTILINE;
544 if (style & ES_PASSWORD)
545 m_windowStyle |= wxTE_PASSWORD;
546 if (style & ES_READONLY)
547 m_windowStyle |= wxTE_READONLY;
548 if (style & ES_WANTRETURN)
549 m_windowStyle |= wxTE_PROCESS_ENTER;
550 if (style & ES_CENTER)
551 m_windowStyle |= wxTE_CENTRE;
552 if (style & ES_RIGHT)
553 m_windowStyle |= wxTE_RIGHT;
554 }
555
556 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
557 {
558 long msStyle = wxControl::MSWGetStyle(style, exstyle);
559
560 // styles which we alaways add by default
561 if ( style & wxTE_MULTILINE )
562 {
563 msStyle |= ES_MULTILINE | ES_WANTRETURN;
564 if ( !(style & wxTE_NO_VSCROLL) )
565 {
566 // always adjust the vertical scrollbar automatically if we have it
567 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
568
569 #if wxUSE_RICHEDIT
570 // we have to use this style for the rich edit controls because
571 // without it the vertical scrollbar never appears at all in
572 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
573 if ( style & wxTE_RICH2 )
574 {
575 msStyle |= ES_DISABLENOSCROLL;
576 }
577 #endif // wxUSE_RICHEDIT
578 }
579
580 style |= wxTE_PROCESS_ENTER;
581 }
582 else // !multiline
583 {
584 // there is really no reason to not have this style for single line
585 // text controls
586 msStyle |= ES_AUTOHSCROLL;
587 }
588
589 // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
590 // scrollbar, there is no wrapping -- which makes sense
591 if ( style & wxTE_DONTWRAP )
592 {
593 // automatically scroll the control horizontally as necessary
594 //
595 // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
596 // show horz scrollbar at all, even in spite of WS_HSCROLL, and as
597 // it doesn't seem to do any harm for plain edit controls, add it
598 // always
599 msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
600 }
601
602 if ( style & wxTE_READONLY )
603 msStyle |= ES_READONLY;
604
605 if ( style & wxTE_PASSWORD )
606 msStyle |= ES_PASSWORD;
607
608 if ( style & wxTE_NOHIDESEL )
609 msStyle |= ES_NOHIDESEL;
610
611 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
612 if ( style & wxTE_CENTRE )
613 msStyle |= ES_CENTER;
614 else if ( style & wxTE_RIGHT )
615 msStyle |= ES_RIGHT;
616 else
617 msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
618
619 return msStyle;
620 }
621
622 void wxTextCtrl::SetWindowStyleFlag(long style)
623 {
624 // changing the alignment of the control dynamically works under Win2003
625 // (but not older Windows version: it seems to work under some versions of
626 // XP but not other ones, and we have no way to determine it so be
627 // conservative here) and only for plain EDIT controls (not RICH ones) and
628 // we have to recreate the control to make it always work
629 if ( IsRich() || wxGetWinVersion() < wxWinVersion_2003 )
630 {
631 const long alignMask = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
632 if ( (style & alignMask) != (GetWindowStyle() & alignMask) )
633 {
634 const wxString value = GetValue();
635 const wxPoint pos = GetPosition();
636 const wxSize size = GetSize();
637
638 // delete the old window
639 HWND hwnd = GetHwnd();
640 DissociateHandle();
641 ::DestroyWindow(hwnd);
642
643 // create the new one with the updated flags
644 m_windowStyle = style;
645 MSWCreateText(value, pos, size);
646
647 // and make sure it has the same attributes as before
648 if ( m_hasFont )
649 {
650 // calling SetFont(m_font) would do nothing as the code would
651 // notice that the font didn't change, so force it to believe
652 // that it did
653 wxFont font = m_font;
654 m_font = wxNullFont;
655 SetFont(font);
656 }
657
658 if ( m_hasFgCol )
659 {
660 wxColour colFg = m_foregroundColour;
661 m_foregroundColour = wxNullColour;
662 SetForegroundColour(colFg);
663 }
664
665 if ( m_hasBgCol )
666 {
667 wxColour colBg = m_backgroundColour;
668 m_backgroundColour = wxNullColour;
669 SetBackgroundColour(colBg);
670 }
671
672 // note that text styles are lost but this is probably not a big
673 // problem: if you use styles, you probably don't use nor change
674 // alignment flags anyhow
675
676 return;
677 }
678 }
679
680 #if wxUSE_RICHEDIT
681 // we have to deal with some styles separately because they can't be
682 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
683 // using richedit-specific EM_SETOPTIONS
684 if ( IsRich() &&
685 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
686 {
687 bool set = (style & wxTE_NOHIDESEL) != 0;
688
689 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
690 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
691 }
692 #endif // wxUSE_RICHEDIT
693
694 wxControl::SetWindowStyleFlag(style);
695 }
696
697 // ----------------------------------------------------------------------------
698 // set/get the controls text
699 // ----------------------------------------------------------------------------
700
701 bool wxTextCtrl::IsEmpty() const
702 {
703 // this is an optimization for multiline controls containing a lot of text
704 if ( IsMultiLine() && GetNumberOfLines() != 1 )
705 return false;
706
707 return wxTextCtrlBase::IsEmpty();
708 }
709
710 wxString wxTextCtrl::GetValue() const
711 {
712 // range 0..-1 is special for GetRange() and means to retrieve all text
713 return GetRange(0, -1);
714 }
715
716 wxString wxTextCtrl::GetRange(long from, long to) const
717 {
718 wxString str;
719
720 if ( from >= to && to != -1 )
721 {
722 // nothing to retrieve
723 return str;
724 }
725
726 #if wxUSE_RICHEDIT
727 if ( IsRich() )
728 {
729 int len = GetWindowTextLength(GetHwnd());
730 if ( len > from )
731 {
732 if ( to == -1 )
733 to = len;
734
735 #if !wxUSE_UNICODE
736 // we must use EM_STREAMOUT if we don't want to lose all characters
737 // not representable in the current character set (EM_GETTEXTRANGE
738 // simply replaces them with question marks...)
739 if ( GetRichVersion() > 1 )
740 {
741 // we must have some encoding, otherwise any 8bit chars in the
742 // control are simply *lost* (replaced by '?')
743 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
744
745 wxFont font = m_defaultStyle.GetFont();
746 if ( !font.Ok() )
747 font = GetFont();
748
749 if ( font.Ok() )
750 {
751 encoding = font.GetEncoding();
752 }
753
754 #if wxUSE_INTL
755 if ( encoding == wxFONTENCODING_SYSTEM )
756 {
757 encoding = wxLocale::GetSystemEncoding();
758 }
759 #endif // wxUSE_INTL
760
761 if ( encoding == wxFONTENCODING_SYSTEM )
762 {
763 encoding = wxFONTENCODING_ISO8859_1;
764 }
765
766 str = StreamOut(encoding);
767
768 if ( !str.empty() )
769 {
770 // we have to manually extract the required part, luckily
771 // this is easy in this case as EOL characters in str are
772 // just LFs because we remove CRs in wxRichEditStreamOut
773 str = str.Mid(from, to - from);
774 }
775 }
776
777 // StreamOut() wasn't used or failed, try to do it in normal way
778 if ( str.empty() )
779 #endif // !wxUSE_UNICODE
780 {
781 // alloc one extra WORD as needed by the control
782 wxStringBuffer tmp(str, ++len);
783 wxChar *p = tmp;
784
785 TEXTRANGE textRange;
786 textRange.chrg.cpMin = from;
787 textRange.chrg.cpMax = to;
788 textRange.lpstrText = p;
789
790 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
791 0, (LPARAM)&textRange);
792
793 if ( m_verRichEdit > 1 )
794 {
795 // RichEdit 2.0 uses just CR ('\r') for the
796 // newlines which is neither Unix nor Windows
797 // style - convert it to something reasonable
798 for ( ; *p; p++ )
799 {
800 if ( *p == _T('\r') )
801 *p = _T('\n');
802 }
803 }
804 }
805
806 if ( m_verRichEdit == 1 )
807 {
808 // convert to the canonical form - see comment below
809 str = wxTextFile::Translate(str, wxTextFileType_Unix);
810 }
811 }
812 //else: no text at all, leave the string empty
813 }
814 else
815 #endif // wxUSE_RICHEDIT
816 {
817 // retrieve all text
818 str = wxGetWindowText(GetHWND());
819
820 // need only a range?
821 if ( from < to )
822 {
823 str = str.Mid(from, to - from);
824 }
825
826 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
827 // canonical one (same one as above) for consistency with the other kinds
828 // of controls and, more importantly, with the other ports
829 str = wxTextFile::Translate(str, wxTextFileType_Unix);
830 }
831
832 return str;
833 }
834
835 void wxTextCtrl::DoSetValue(const wxString& value, int flags)
836 {
837 // if the text is long enough, it's faster to just set it instead of first
838 // comparing it with the old one (chances are that it will be different
839 // anyhow, this comparison is there to avoid flicker for small single-line
840 // edit controls mostly)
841 if ( (value.length() > 0x400) || (value != GetValue()) )
842 {
843 DoWriteText(value, flags /* doesn't include SelectionOnly here */);
844
845 // mark the control as being not dirty - we changed its text, not the
846 // user
847 DiscardEdits();
848
849 // for compatibility, don't move the cursor when doing SetValue()
850 SetInsertionPoint(0);
851 }
852 else // same text
853 {
854 // still reset the modified flag even if the value didn't really change
855 // because now it comes from the program and not the user (and do it
856 // before generating the event so that the event handler could get the
857 // expected value from IsModified())
858 DiscardEdits();
859
860 // still send an event for consistency
861 if (flags & SetValue_SendEvent)
862 SendUpdateEvent();
863 }
864 }
865
866 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
867
868 // TODO: using memcpy() would improve performance a lot for big amounts of text
869
870 DWORD CALLBACK
871 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
872 {
873 *pcb = 0;
874
875 const wchar_t ** const ppws = (const wchar_t **)dwCookie;
876
877 wchar_t *wbuf = (wchar_t *)buf;
878 const wchar_t *wpc = *ppws;
879 while ( cb && *wpc )
880 {
881 *wbuf++ = *wpc++;
882
883 cb -= sizeof(wchar_t);
884 (*pcb) += sizeof(wchar_t);
885 }
886
887 *ppws = wpc;
888
889 return 0;
890 }
891
892 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
893 struct wxStreamOutData
894 {
895 wchar_t *wpc;
896 size_t len;
897 };
898
899 DWORD CALLBACK
900 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
901 {
902 *pcb = 0;
903
904 wxStreamOutData *data = (wxStreamOutData *)dwCookie;
905
906 const wchar_t *wbuf = (const wchar_t *)buf;
907 wchar_t *wpc = data->wpc;
908 while ( cb )
909 {
910 wchar_t wch = *wbuf++;
911
912 // turn "\r\n" into "\n" on the fly
913 if ( wch != L'\r' )
914 *wpc++ = wch;
915 else
916 data->len--;
917
918 cb -= sizeof(wchar_t);
919 (*pcb) += sizeof(wchar_t);
920 }
921
922 data->wpc = wpc;
923
924 return 0;
925 }
926
927
928 #if wxUSE_UNICODE_MSLU
929 #define UNUSED_IF_MSLU(param)
930 #else
931 #define UNUSED_IF_MSLU(param) param
932 #endif
933
934 bool
935 wxTextCtrl::StreamIn(const wxString& value,
936 wxFontEncoding UNUSED_IF_MSLU(encoding),
937 bool selectionOnly)
938 {
939 #if wxUSE_UNICODE_MSLU
940 const wchar_t *wpc = value.c_str();
941 #else // !wxUSE_UNICODE_MSLU
942 wxCSConv conv(encoding);
943
944 const size_t len = conv.MB2WC(NULL, value, value.length());
945
946 if (len == wxCONV_FAILED)
947 return false;
948
949 #if wxUSE_WCHAR_T
950 wxWCharBuffer wchBuf(len); // allocates one extra character
951 wchar_t *wpc = wchBuf.data();
952 #else
953 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
954 wchar_t *wpc = wchBuf;
955 #endif
956
957 conv.MB2WC(wpc, value, len + 1);
958 #endif // wxUSE_UNICODE_MSLU
959
960 // finally, stream it in the control
961 EDITSTREAM eds;
962 wxZeroMemory(eds);
963 eds.dwCookie = (DWORD)&wpc;
964 // the cast below is needed for broken (very) old mingw32 headers
965 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
966
967 // same problem as in DoWriteText(): we can get multiple events here
968 UpdatesCountFilter ucf(m_updatesCount);
969
970 ::SendMessage(GetHwnd(), EM_STREAMIN,
971 SF_TEXT |
972 SF_UNICODE |
973 (selectionOnly ? SFF_SELECTION : 0),
974 (LPARAM)&eds);
975
976 // It's okay for EN_UPDATE to not be sent if the selection is empty and
977 // the text is empty, otherwise warn the programmer about it.
978 wxASSERT_MSG( ucf.GotUpdate() || ( !HasSelection() && value.empty() ),
979 _T("EM_STREAMIN didn't send EN_UPDATE?") );
980
981 if ( eds.dwError )
982 {
983 wxLogLastError(_T("EM_STREAMIN"));
984 }
985
986 #if !wxUSE_WCHAR_T
987 free(wchBuf);
988 #endif // !wxUSE_WCHAR_T
989
990 return true;
991 }
992
993 #if !wxUSE_UNICODE_MSLU
994
995 wxString
996 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
997 {
998 wxString out;
999
1000 const int len = GetWindowTextLength(GetHwnd());
1001
1002 #if wxUSE_WCHAR_T
1003 wxWCharBuffer wchBuf(len);
1004 wchar_t *wpc = wchBuf.data();
1005 #else
1006 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
1007 wchar_t *wpc = wchBuf;
1008 #endif
1009
1010 wxStreamOutData data;
1011 data.wpc = wpc;
1012 data.len = len;
1013
1014 EDITSTREAM eds;
1015 wxZeroMemory(eds);
1016 eds.dwCookie = (DWORD)&data;
1017 eds.pfnCallback = wxRichEditStreamOut;
1018
1019 ::SendMessage
1020 (
1021 GetHwnd(),
1022 EM_STREAMOUT,
1023 SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
1024 (LPARAM)&eds
1025 );
1026
1027 if ( eds.dwError )
1028 {
1029 wxLogLastError(_T("EM_STREAMOUT"));
1030 }
1031 else // streamed out ok
1032 {
1033 // NUL-terminate the string because its length could have been
1034 // decreased by wxRichEditStreamOut
1035 *(wchBuf.data() + data.len) = L'\0';
1036
1037 // now convert to the given encoding (this is a possibly lossful
1038 // conversion but what else can we do)
1039 wxCSConv conv(encoding);
1040 size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
1041
1042 if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
1043 {
1044 conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
1045 }
1046 }
1047
1048 #if !wxUSE_WCHAR_T
1049 free(wchBuf);
1050 #endif // !wxUSE_WCHAR_T
1051
1052 return out;
1053 }
1054
1055 #endif // !wxUSE_UNICODE_MSLU
1056
1057 #endif // wxUSE_RICHEDIT
1058
1059 void wxTextCtrl::WriteText(const wxString& value)
1060 {
1061 DoWriteText(value);
1062 }
1063
1064 void wxTextCtrl::DoWriteText(const wxString& value, int flags)
1065 {
1066 bool selectionOnly = (flags & SetValue_SelectionOnly) != 0;
1067 wxString valueDos;
1068 if ( m_windowStyle & wxTE_MULTILINE )
1069 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
1070 else
1071 valueDos = value;
1072
1073 #if wxUSE_RICHEDIT
1074 // there are several complications with the rich edit controls here
1075 bool done = false;
1076 if ( IsRich() )
1077 {
1078 // first, ensure that the new text will be in the default style
1079 if ( !m_defaultStyle.IsDefault() )
1080 {
1081 long start, end;
1082 GetSelection(&start, &end);
1083 SetStyle(start, end, m_defaultStyle);
1084 }
1085
1086 #if wxUSE_UNICODE_MSLU
1087 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
1088 // but EM_STREAMIN works
1089 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
1090 {
1091 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
1092 }
1093 #endif // wxUSE_UNICODE_MSLU
1094
1095 #if !wxUSE_UNICODE
1096 // next check if the text we're inserting must be shown in a non
1097 // default charset -- this only works for RichEdit > 1.0
1098 if ( GetRichVersion() > 1 )
1099 {
1100 wxFont font = m_defaultStyle.GetFont();
1101 if ( !font.Ok() )
1102 font = GetFont();
1103
1104 if ( font.Ok() )
1105 {
1106 wxFontEncoding encoding = font.GetEncoding();
1107 if ( encoding != wxFONTENCODING_SYSTEM )
1108 {
1109 // we have to use EM_STREAMIN to force richedit control 2.0+
1110 // to show any text in the non default charset -- otherwise
1111 // it thinks it knows better than we do and always shows it
1112 // in the default one
1113 done = StreamIn(valueDos, encoding, selectionOnly);
1114 }
1115 }
1116 }
1117 #endif // !wxUSE_UNICODE
1118 }
1119
1120 if ( !done )
1121 #endif // wxUSE_RICHEDIT
1122 {
1123 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
1124 // call (this happens for plain EDITs with EM_REPLACESEL and under some
1125 // -- undetermined -- conditions with rich edit) and sometimes we don't
1126 // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
1127 // we generate exactly one of them by ignoring all but the first one in
1128 // SendUpdateEvent() and generating one ourselves if we hadn't got any
1129 // notifications from Windows
1130 if ( !(flags & SetValue_SendEvent) )
1131 m_updatesCount = -2; // suppress any update event
1132
1133 UpdatesCountFilter ucf(m_updatesCount);
1134
1135 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
1136 // EM_REPLACESEL takes 1 to indicate the operation should be redoable
1137 selectionOnly ? 1 : 0, (LPARAM)valueDos.c_str());
1138
1139 if ( !ucf.GotUpdate() && (flags & SetValue_SendEvent) )
1140 {
1141 SendUpdateEvent();
1142 }
1143 }
1144 }
1145
1146 void wxTextCtrl::AppendText(const wxString& text)
1147 {
1148 SetInsertionPointEnd();
1149
1150 WriteText(text);
1151
1152 #if wxUSE_RICHEDIT
1153 // don't do this if we're frozen, saves some time
1154 if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )
1155 {
1156 // setting the caret to the end and showing it simply doesn't work for
1157 // RichEdit 2.0 -- force it to still do what we want
1158 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
1159 }
1160 #endif // wxUSE_RICHEDIT
1161 }
1162
1163 void wxTextCtrl::Clear()
1164 {
1165 ::SetWindowText(GetHwnd(), wxEmptyString);
1166
1167 #if wxUSE_RICHEDIT
1168 if ( !IsRich() )
1169 #endif // wxUSE_RICHEDIT
1170 {
1171 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
1172 // but the normal ones don't -- make Clear() behaviour consistent by
1173 // always sending this event
1174
1175 // Windows already sends an update event for single-line
1176 // controls.
1177 if ( m_windowStyle & wxTE_MULTILINE )
1178 SendUpdateEvent();
1179 }
1180 }
1181
1182 #ifdef __WIN32__
1183
1184 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
1185 {
1186 SetFocus();
1187
1188 size_t lenOld = GetValue().length();
1189
1190 wxUint32 code = event.GetRawKeyCode();
1191 ::keybd_event((BYTE)code, 0, 0 /* key press */, 0);
1192 ::keybd_event((BYTE)code, 0, KEYEVENTF_KEYUP, 0);
1193
1194 // assume that any alphanumeric key changes the total number of characters
1195 // in the control - this should work in 99% of cases
1196 return GetValue().length() != lenOld;
1197 }
1198
1199 #endif // __WIN32__
1200
1201 // ----------------------------------------------------------------------------
1202 // Clipboard operations
1203 // ----------------------------------------------------------------------------
1204
1205 void wxTextCtrl::Copy()
1206 {
1207 if (CanCopy())
1208 {
1209 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1210 }
1211 }
1212
1213 void wxTextCtrl::Cut()
1214 {
1215 if (CanCut())
1216 {
1217 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1218 }
1219 }
1220
1221 void wxTextCtrl::Paste()
1222 {
1223 if (CanPaste())
1224 {
1225 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1226 }
1227 }
1228
1229 bool wxTextCtrl::HasSelection() const
1230 {
1231 long from, to;
1232 GetSelection(&from, &to);
1233 return from != to;
1234 }
1235
1236 bool wxTextCtrl::CanCopy() const
1237 {
1238 // Can copy if there's a selection
1239 return HasSelection();
1240 }
1241
1242 bool wxTextCtrl::CanCut() const
1243 {
1244 return CanCopy() && IsEditable();
1245 }
1246
1247 bool wxTextCtrl::CanPaste() const
1248 {
1249 if ( !IsEditable() )
1250 return false;
1251
1252 #if wxUSE_RICHEDIT
1253 if ( IsRich() )
1254 {
1255 UINT cf = 0; // 0 == any format
1256
1257 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1258 }
1259 #endif // wxUSE_RICHEDIT
1260
1261 // Standard edit control: check for straight text on clipboard
1262 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1263 return false;
1264
1265 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1266 ::CloseClipboard();
1267
1268 return isTextAvailable;
1269 }
1270
1271 // ----------------------------------------------------------------------------
1272 // Accessors
1273 // ----------------------------------------------------------------------------
1274
1275 void wxTextCtrl::SetEditable(bool editable)
1276 {
1277 HWND hWnd = GetHwnd();
1278 ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1279 }
1280
1281 void wxTextCtrl::SetInsertionPoint(long pos)
1282 {
1283 DoSetSelection(pos, pos);
1284 }
1285
1286 void wxTextCtrl::SetInsertionPointEnd()
1287 {
1288 // we must not do anything if the caret is already there because calling
1289 // SetInsertionPoint() thaws the controls if Freeze() had been called even
1290 // if it doesn't actually move the caret anywhere and so the simple fact of
1291 // doing it results in horrible flicker when appending big amounts of text
1292 // to the control in a few chunks (see DoAddText() test in the text sample)
1293 const wxTextPos lastPosition = GetLastPosition();
1294 if ( GetInsertionPoint() == lastPosition )
1295 {
1296 return;
1297 }
1298
1299 long pos;
1300
1301 #if wxUSE_RICHEDIT
1302 if ( m_verRichEdit == 1 )
1303 {
1304 // we don't have to waste time calling GetLastPosition() in this case
1305 pos = -1;
1306 }
1307 else // !RichEdit 1.0
1308 #endif // wxUSE_RICHEDIT
1309 {
1310 pos = lastPosition;
1311 }
1312
1313 SetInsertionPoint(pos);
1314 }
1315
1316 long wxTextCtrl::GetInsertionPoint() const
1317 {
1318 #if wxUSE_RICHEDIT
1319 if ( IsRich() )
1320 {
1321 CHARRANGE range;
1322 range.cpMin = 0;
1323 range.cpMax = 0;
1324 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1325 return range.cpMin;
1326 }
1327 #endif // wxUSE_RICHEDIT
1328
1329 DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1330 return Pos & 0xFFFF;
1331 }
1332
1333 wxTextPos wxTextCtrl::GetLastPosition() const
1334 {
1335 int numLines = GetNumberOfLines();
1336 long posStartLastLine = XYToPosition(0, numLines - 1);
1337
1338 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1339
1340 return posStartLastLine + lenLastLine;
1341 }
1342
1343 // If the return values from and to are the same, there is no
1344 // selection.
1345 void wxTextCtrl::GetSelection(long* from, long* to) const
1346 {
1347 #if wxUSE_RICHEDIT
1348 if ( IsRich() )
1349 {
1350 CHARRANGE charRange;
1351 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1352
1353 *from = charRange.cpMin;
1354 *to = charRange.cpMax;
1355 }
1356 else
1357 #endif // !wxUSE_RICHEDIT
1358 {
1359 DWORD dwStart, dwEnd;
1360 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1361
1362 *from = dwStart;
1363 *to = dwEnd;
1364 }
1365 }
1366
1367 bool wxTextCtrl::IsEditable() const
1368 {
1369 // strangely enough, we may be called before the control is created: our
1370 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1371 // us
1372 if ( !m_hWnd )
1373 return true;
1374
1375 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1376
1377 return (style & ES_READONLY) == 0;
1378 }
1379
1380 // ----------------------------------------------------------------------------
1381 // selection
1382 // ----------------------------------------------------------------------------
1383
1384 void wxTextCtrl::SetSelection(long from, long to)
1385 {
1386 // if from and to are both -1, it means (in wxWidgets) that all text should
1387 // be selected - translate into Windows convention
1388 if ( (from == -1) && (to == -1) )
1389 {
1390 from = 0;
1391 to = -1;
1392 }
1393
1394 DoSetSelection(from, to);
1395 }
1396
1397 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1398 {
1399 HWND hWnd = GetHwnd();
1400
1401 #if wxUSE_RICHEDIT
1402 if ( IsRich() )
1403 {
1404 CHARRANGE range;
1405 range.cpMin = from;
1406 range.cpMax = to;
1407 ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1408 }
1409 else
1410 #endif // wxUSE_RICHEDIT
1411 {
1412 ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1413 }
1414
1415 if ( scrollCaret && !IsFrozen() )
1416 {
1417 #if wxUSE_RICHEDIT
1418 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1419 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1420 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1421 // option is set (but it does work ok in richedit 1.0 mode...)
1422 //
1423 // so to make it work we either need to give focus to it here which
1424 // will probably create many problems (dummy focus events; window
1425 // containing the text control being brought to foreground
1426 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1427 // create other problems too -- and in fact it does because if we turn
1428 // on/off this style while appending the text to the control, the
1429 // vertical scrollbar never appears in it even if we append tons of
1430 // text and to work around this the only solution I found was to use
1431 // ES_DISABLENOSCROLL
1432 //
1433 // this is very ugly but I don't see any other way to make this work
1434 long style = 0;
1435 if ( GetRichVersion() > 1 )
1436 {
1437 if ( !HasFlag(wxTE_NOHIDESEL) )
1438 {
1439 // setting ECO_NOHIDESEL also sets WS_VISIBLE and possibly
1440 // others, remember the style so we can reset it later if needed
1441 style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1442 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1443 ECOOP_OR, ECO_NOHIDESEL);
1444 }
1445 //else: everything is already ok
1446 }
1447 #endif // wxUSE_RICHEDIT
1448
1449 ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1450
1451 #if wxUSE_RICHEDIT
1452 // restore ECO_NOHIDESEL if we changed it
1453 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1454 {
1455 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1456 ECOOP_AND, ~ECO_NOHIDESEL);
1457 if ( style != ::GetWindowLong(GetHwnd(), GWL_STYLE) )
1458 ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
1459 }
1460 #endif // wxUSE_RICHEDIT
1461 }
1462 }
1463
1464 // ----------------------------------------------------------------------------
1465 // Working with files
1466 // ----------------------------------------------------------------------------
1467
1468 bool wxTextCtrl::DoLoadFile(const wxString& file, int fileType)
1469 {
1470 if ( wxTextCtrlBase::DoLoadFile(file, fileType) )
1471 {
1472 // update the size limit if needed
1473 AdjustSpaceLimit();
1474
1475 return true;
1476 }
1477
1478 return false;
1479 }
1480
1481 // ----------------------------------------------------------------------------
1482 // Editing
1483 // ----------------------------------------------------------------------------
1484
1485 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1486 {
1487 // Set selection and remove it
1488 DoSetSelection(from, to, false /* don't scroll caret into view */);
1489
1490 DoWriteText(value);
1491 }
1492
1493 void wxTextCtrl::Remove(long from, long to)
1494 {
1495 Replace(from, to, wxEmptyString);
1496 }
1497
1498 bool wxTextCtrl::IsModified() const
1499 {
1500 return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1501 }
1502
1503 void wxTextCtrl::MarkDirty()
1504 {
1505 ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1506 }
1507
1508 void wxTextCtrl::DiscardEdits()
1509 {
1510 ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1511 }
1512
1513 int wxTextCtrl::GetNumberOfLines() const
1514 {
1515 return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1516 }
1517
1518 // ----------------------------------------------------------------------------
1519 // Positions <-> coords
1520 // ----------------------------------------------------------------------------
1521
1522 long wxTextCtrl::XYToPosition(long x, long y) const
1523 {
1524 // This gets the char index for the _beginning_ of this line
1525 long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1526
1527 return charIndex + x;
1528 }
1529
1530 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1531 {
1532 HWND hWnd = GetHwnd();
1533
1534 // This gets the line number containing the character
1535 long lineNo;
1536 #if wxUSE_RICHEDIT
1537 if ( IsRich() )
1538 {
1539 lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1540 }
1541 else
1542 #endif // wxUSE_RICHEDIT
1543 {
1544 lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1545 }
1546
1547 if ( lineNo == -1 )
1548 {
1549 // no such line
1550 return false;
1551 }
1552
1553 // This gets the char index for the _beginning_ of this line
1554 long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1555 if ( charIndex == -1 )
1556 {
1557 return false;
1558 }
1559
1560 // The X position must therefore be the different between pos and charIndex
1561 if ( x )
1562 *x = pos - charIndex;
1563 if ( y )
1564 *y = lineNo;
1565
1566 return true;
1567 }
1568
1569 wxTextCtrlHitTestResult
1570 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1571 {
1572 // first get the position from Windows
1573 LPARAM lParam;
1574
1575 #if wxUSE_RICHEDIT
1576 POINTL ptl;
1577 if ( IsRich() )
1578 {
1579 // for rich edit controls the position is passed iva the struct fields
1580 ptl.x = pt.x;
1581 ptl.y = pt.y;
1582 lParam = (LPARAM)&ptl;
1583 }
1584 else
1585 #endif // wxUSE_RICHEDIT
1586 {
1587 // for the plain ones, we are limited to 16 bit positions which are
1588 // combined in a single 32 bit value
1589 lParam = MAKELPARAM(pt.x, pt.y);
1590 }
1591
1592 LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1593
1594 if ( pos == -1 )
1595 {
1596 // this seems to indicate an error...
1597 return wxTE_HT_UNKNOWN;
1598 }
1599
1600 #if wxUSE_RICHEDIT
1601 if ( !IsRich() )
1602 #endif // wxUSE_RICHEDIT
1603 {
1604 // for plain EDIT controls the higher word contains something else
1605 pos = LOWORD(pos);
1606 }
1607
1608
1609 // next determine where it is relatively to our point: EM_CHARFROMPOS
1610 // always returns the closest character but we need to be more precise, so
1611 // double check that we really are where it pretends
1612 POINTL ptReal;
1613
1614 #if wxUSE_RICHEDIT
1615 // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1616 // we don't know how to do it
1617 if ( IsRich() )
1618 {
1619 ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1620 }
1621 else
1622 #endif // wxUSE_RICHEDIT
1623 {
1624 LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1625
1626 if ( lRc == -1 )
1627 {
1628 // this is apparently returned when pos corresponds to the last
1629 // position
1630 ptReal.x =
1631 ptReal.y = 0;
1632 }
1633 else
1634 {
1635 ptReal.x = LOWORD(lRc);
1636 ptReal.y = HIWORD(lRc);
1637 }
1638 }
1639
1640 wxTextCtrlHitTestResult rc;
1641
1642 if ( pt.y > ptReal.y + GetCharHeight() )
1643 rc = wxTE_HT_BELOW;
1644 else if ( pt.x > ptReal.x + GetCharWidth() )
1645 rc = wxTE_HT_BEYOND;
1646 else
1647 rc = wxTE_HT_ON_TEXT;
1648
1649 if ( posOut )
1650 *posOut = pos;
1651
1652 return rc;
1653 }
1654
1655 // ----------------------------------------------------------------------------
1656 //
1657 // ----------------------------------------------------------------------------
1658
1659 void wxTextCtrl::ShowPosition(long pos)
1660 {
1661 HWND hWnd = GetHwnd();
1662
1663 // To scroll to a position, we pass the number of lines and characters
1664 // to scroll *by*. This means that we need to:
1665 // (1) Find the line position of the current line.
1666 // (2) Find the line position of pos.
1667 // (3) Scroll by (pos - current).
1668 // For now, ignore the horizontal scrolling.
1669
1670 // Is this where scrolling is relative to - the line containing the caret?
1671 // Or is the first visible line??? Try first visible line.
1672 // int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1673
1674 int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1675
1676 int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1677
1678 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1679
1680 if (linesToScroll != 0)
1681 (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1682 }
1683
1684 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1685 {
1686 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1687 }
1688
1689 int wxTextCtrl::GetLineLength(long lineNo) const
1690 {
1691 long pos = XYToPosition(0, lineNo);
1692
1693 return GetLengthOfLineContainingPos(pos);
1694 }
1695
1696 wxString wxTextCtrl::GetLineText(long lineNo) const
1697 {
1698 size_t len = (size_t)GetLineLength(lineNo) + 1;
1699
1700 // there must be at least enough place for the length WORD in the
1701 // buffer
1702 len += sizeof(WORD);
1703
1704 wxString str;
1705 {
1706 wxStringBufferLength tmp(str, len);
1707 wxChar *buf = tmp;
1708
1709 *(WORD *)buf = (WORD)len;
1710 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1711
1712 #if wxUSE_RICHEDIT
1713 if ( IsRich() )
1714 {
1715 // remove the '\r' returned by the rich edit control, the user code
1716 // should never see it
1717 if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1718 {
1719 // richedit 1.0 uses "\r\n" as line terminator, so remove "\r"
1720 // here and "\n" below
1721 buf[len - 2] = _T('\n');
1722 len--;
1723 }
1724 else if ( buf[len - 1] == _T('\r') )
1725 {
1726 // richedit 2.0+ uses only "\r", replace it with "\n"
1727 buf[len - 1] = _T('\n');
1728 }
1729 }
1730 #endif // wxUSE_RICHEDIT
1731
1732 // remove the '\n' at the end, if any (this is how this function is
1733 // supposed to work according to the docs)
1734 if ( buf[len - 1] == _T('\n') )
1735 {
1736 len--;
1737 }
1738
1739 buf[len] = 0;
1740 tmp.SetLength(len);
1741 }
1742
1743 return str;
1744 }
1745
1746 void wxTextCtrl::SetMaxLength(unsigned long len)
1747 {
1748 #if wxUSE_RICHEDIT
1749 if ( IsRich() )
1750 {
1751 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, len ? len : 0x7fffffff);
1752 }
1753 else
1754 #endif // wxUSE_RICHEDIT
1755 {
1756 if ( len >= 0xffff )
1757 {
1758 // this will set it to a platform-dependent maximum (much more
1759 // than 64Kb under NT)
1760 len = 0;
1761 }
1762
1763 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1764 }
1765 }
1766
1767 // ----------------------------------------------------------------------------
1768 // Undo/redo
1769 // ----------------------------------------------------------------------------
1770
1771 void wxTextCtrl::Undo()
1772 {
1773 if (CanUndo())
1774 {
1775 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1776 }
1777 }
1778
1779 void wxTextCtrl::Redo()
1780 {
1781 if (CanRedo())
1782 {
1783 #if wxUSE_RICHEDIT
1784 if (GetRichVersion() > 1)
1785 ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1786 else
1787 #endif
1788 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1789 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1790 }
1791 }
1792
1793 bool wxTextCtrl::CanUndo() const
1794 {
1795 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1796 }
1797
1798 bool wxTextCtrl::CanRedo() const
1799 {
1800 #if wxUSE_RICHEDIT
1801 if (GetRichVersion() > 1)
1802 return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1803 else
1804 #endif
1805 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1806 }
1807
1808 // ----------------------------------------------------------------------------
1809 // caret handling (Windows only)
1810 // ----------------------------------------------------------------------------
1811
1812 bool wxTextCtrl::ShowNativeCaret(bool show)
1813 {
1814 if ( show != m_isNativeCaretShown )
1815 {
1816 if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1817 {
1818 // not an error, may simply indicate that it's not shown/hidden
1819 // yet (i.e. it had been hidden/showh 2 times before)
1820 return false;
1821 }
1822
1823 m_isNativeCaretShown = show;
1824 }
1825
1826 return true;
1827 }
1828
1829 // ----------------------------------------------------------------------------
1830 // implemenation details
1831 // ----------------------------------------------------------------------------
1832
1833 void wxTextCtrl::Command(wxCommandEvent & event)
1834 {
1835 SetValue(event.GetString());
1836 ProcessCommand (event);
1837 }
1838
1839 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1840 {
1841 // By default, load the first file into the text window.
1842 if (event.GetNumberOfFiles() > 0)
1843 {
1844 LoadFile(event.GetFiles()[0]);
1845 }
1846 }
1847
1848 // ----------------------------------------------------------------------------
1849 // kbd input processing
1850 // ----------------------------------------------------------------------------
1851
1852 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
1853 {
1854 // check for our special keys here: if we don't do it and the parent frame
1855 // uses them as accelerators, they wouldn't work at all, so we disable
1856 // usual preprocessing for them
1857 if ( msg->message == WM_KEYDOWN )
1858 {
1859 const WPARAM vkey = msg->wParam;
1860 if ( HIWORD(msg->lParam) & KF_ALTDOWN )
1861 {
1862 // Alt-Backspace is accelerator for "Undo"
1863 if ( vkey == VK_BACK )
1864 return false;
1865 }
1866 else // no Alt
1867 {
1868 // we want to process some Ctrl-foo and Shift-bar but no key
1869 // combinations without either Ctrl or Shift nor with both of them
1870 // pressed
1871 const int ctrl = wxIsCtrlDown(),
1872 shift = wxIsShiftDown();
1873 switch ( ctrl + shift )
1874 {
1875 default:
1876 wxFAIL_MSG( _T("how many modifiers have we got?") );
1877 // fall through
1878
1879 case 0:
1880 if ( IsMultiLine() && vkey == VK_RETURN )
1881 return false;
1882 // fall through
1883 case 2:
1884 break;
1885
1886 case 1:
1887 // either Ctrl or Shift pressed
1888 if ( ctrl )
1889 {
1890 switch ( vkey )
1891 {
1892 case 'C':
1893 case 'V':
1894 case 'X':
1895 case VK_INSERT:
1896 case VK_DELETE:
1897 case VK_HOME:
1898 case VK_END:
1899 return false;
1900 }
1901 }
1902 else // Shift is pressed
1903 {
1904 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1905 return false;
1906 }
1907 }
1908 }
1909 }
1910
1911 return wxControl::MSWShouldPreProcessMessage(msg);
1912 }
1913
1914 void wxTextCtrl::OnChar(wxKeyEvent& event)
1915 {
1916 switch ( event.GetKeyCode() )
1917 {
1918 case WXK_RETURN:
1919 {
1920 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1921 InitCommandEvent(event);
1922 event.SetString(GetValue());
1923 if ( GetEventHandler()->ProcessEvent(event) )
1924 if ( !HasFlag(wxTE_MULTILINE) )
1925 return;
1926 //else: multiline controls need Enter for themselves
1927 }
1928 break;
1929
1930 case WXK_TAB:
1931 // ok, so this is getting absolutely ridiculous but I don't see
1932 // any other way to fix this bug: when a multiline text control is
1933 // inside a wxFrame, we need to generate the navigation event as
1934 // otherwise nothing happens at all, but when the same control is
1935 // created inside a dialog, IsDialogMessage() *does* switch focus
1936 // all by itself and so if we do it here as well, it is advanced
1937 // twice and goes to the next control... to prevent this from
1938 // happening we're doing this ugly check, the logic being that if
1939 // we don't have focus then it had been already changed to the next
1940 // control
1941 //
1942 // the right thing to do would, of course, be to understand what
1943 // the hell is IsDialogMessage() doing but this is beyond my feeble
1944 // forces at the moment unfortunately
1945 if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1946 {
1947 if ( FindFocus() == this )
1948 {
1949 int flags = 0;
1950 if (!event.ShiftDown())
1951 flags |= wxNavigationKeyEvent::IsForward ;
1952 if (event.ControlDown())
1953 flags |= wxNavigationKeyEvent::WinChange ;
1954 if (Navigate(flags))
1955 return;
1956 }
1957 }
1958 else
1959 {
1960 // Insert tab since calling the default Windows handler
1961 // doesn't seem to do it
1962 WriteText(wxT("\t"));
1963 return;
1964 }
1965 break;
1966 }
1967
1968 // no, we didn't process it
1969 event.Skip();
1970 }
1971
1972 void wxTextCtrl::OnKeyDown(wxKeyEvent& event)
1973 {
1974 // richedit control doesn't send WM_PASTE, WM_CUT and WM_COPY messages
1975 // when Ctrl-V, X or C is pressed and this prevents wxClipboardTextEvent
1976 // from working. So we work around it by intercepting these shortcuts
1977 // ourselves and emitting clipboard events (which richedit will handle,
1978 // so everything works as before, including pasting of rich text):
1979 if ( event.GetModifiers() == wxMOD_CONTROL && IsRich() )
1980 {
1981 switch ( event.GetKeyCode() )
1982 {
1983 case 'C':
1984 Copy();
1985 return;
1986 case 'X':
1987 Cut();
1988 return;
1989 case 'V':
1990 Paste();
1991 return;
1992 default:
1993 break;
1994 }
1995 }
1996
1997 // no, we didn't process it
1998 event.Skip();
1999 }
2000
2001 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
2002 {
2003 // we must handle clipboard events before calling MSWWindowProc, otherwise
2004 // the event would be handled twice if there's a handler for it in user
2005 // code:
2006 switch ( nMsg )
2007 {
2008 case WM_CUT:
2009 case WM_COPY:
2010 case WM_PASTE:
2011 if ( HandleClipboardEvent(nMsg) )
2012 return 0;
2013 break;
2014 }
2015
2016 WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
2017
2018 switch ( nMsg )
2019 {
2020 case WM_GETDLGCODE:
2021 {
2022 // we always want the chars and the arrows: the arrows for
2023 // navigation and the chars because we want Ctrl-C to work even
2024 // in a read only control
2025 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
2026
2027 if ( IsEditable() )
2028 {
2029 // we may have several different cases:
2030 // 1. normal: both TAB and ENTER are used for navigation
2031 // 2. ctrl wants TAB for itself: ENTER is used to pass to
2032 // the next control in the dialog
2033 // 3. ctrl wants ENTER for itself: TAB is used for dialog
2034 // navigation
2035 // 4. ctrl wants both TAB and ENTER: Ctrl-ENTER is used to
2036 // go to the next control (we need some way to do it)
2037
2038 // multiline controls should always get ENTER for themselves
2039 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
2040 lDlgCode |= DLGC_WANTMESSAGE;
2041
2042 if ( HasFlag(wxTE_PROCESS_TAB) )
2043 lDlgCode |= DLGC_WANTTAB;
2044
2045 lRc |= lDlgCode;
2046 }
2047 else // !editable
2048 {
2049 // NB: use "=", not "|=" as the base class version returns
2050 // the same flags is this state as usual (i.e.
2051 // including DLGC_WANTMESSAGE). This is strange (how
2052 // does it work in the native Win32 apps?) but for now
2053 // live with it.
2054 lRc = lDlgCode;
2055 }
2056 }
2057 break;
2058 }
2059
2060 return lRc;
2061 }
2062
2063 // ----------------------------------------------------------------------------
2064 // text control event processing
2065 // ----------------------------------------------------------------------------
2066
2067 bool wxTextCtrl::SendUpdateEvent()
2068 {
2069 switch ( m_updatesCount )
2070 {
2071 case 0:
2072 // remember that we've got an update
2073 m_updatesCount++;
2074 break;
2075
2076 case 1:
2077 // we had already sent one event since the last control modification
2078 return false;
2079
2080 default:
2081 wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
2082 // fall through
2083
2084 case -1:
2085 // we hadn't updated the control ourselves, this event comes from
2086 // the user, don't need to ignore it nor update the count
2087 break;
2088
2089 case -2:
2090 // the control was updated programmatically and we do NOT want to
2091 // send events
2092 return false;
2093 }
2094
2095 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
2096 InitCommandEvent(event);
2097
2098 return ProcessCommand(event);
2099 }
2100
2101 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
2102 {
2103 switch ( param )
2104 {
2105 case EN_SETFOCUS:
2106 case EN_KILLFOCUS:
2107 {
2108 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
2109 : wxEVT_SET_FOCUS,
2110 m_windowId);
2111 event.SetEventObject(this);
2112 GetEventHandler()->ProcessEvent(event);
2113 }
2114 break;
2115
2116 case EN_CHANGE:
2117 SendUpdateEvent();
2118 break;
2119
2120 case EN_MAXTEXT:
2121 // the text size limit has been hit -- try to increase it
2122 if ( !AdjustSpaceLimit() )
2123 {
2124 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
2125 InitCommandEvent(event);
2126 event.SetString(GetValue());
2127 ProcessCommand(event);
2128 }
2129 break;
2130
2131 // the other edit notification messages are not processed
2132 default:
2133 return false;
2134 }
2135
2136 // processed
2137 return true;
2138 }
2139
2140 WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC, WXHWND hWnd)
2141 {
2142 if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
2143 return MSWControlColorDisabled(hDC);
2144
2145 return wxTextCtrlBase::MSWControlColor(hDC, hWnd);
2146 }
2147
2148 bool wxTextCtrl::HasSpaceLimit(unsigned int *len) const
2149 {
2150 // HACK: we try to automatically extend the limit for the amount of text
2151 // to allow (interactively) entering more than 64Kb of text under
2152 // Win9x but we shouldn't reset the text limit which was previously
2153 // set explicitly with SetMaxLength()
2154 //
2155 // Unfortunately there is no EM_GETLIMITTEXTSETBYUSER and so we don't
2156 // know the limit we set (if any). We could solve this by storing the
2157 // limit we set in wxTextCtrl but to save space we prefer to simply
2158 // test here the actual limit value: we consider that SetMaxLength()
2159 // can only be called for small values while EN_MAXTEXT is only sent
2160 // for large values (in practice the default limit seems to be 30000
2161 // but make it smaller just to be on the safe side)
2162 *len = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
2163 return *len < 10001;
2164
2165 }
2166
2167 bool wxTextCtrl::AdjustSpaceLimit()
2168 {
2169 unsigned int limit;
2170 if ( HasSpaceLimit(&limit) )
2171 return false;
2172
2173 unsigned int len = ::GetWindowTextLength(GetHwnd());
2174 if ( len >= limit )
2175 {
2176 // increment in 32Kb chunks
2177 SetMaxLength(len + 0x8000);
2178 }
2179
2180 // we changed the limit
2181 return true;
2182 }
2183
2184 bool wxTextCtrl::AcceptsFocus() const
2185 {
2186 // we don't want focus if we can't be edited unless we're a multiline
2187 // control because then it might be still nice to get focus from keyboard
2188 // to be able to scroll it without mouse
2189 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
2190 }
2191
2192 wxSize wxTextCtrl::DoGetBestSize() const
2193 {
2194 int cx, cy;
2195 wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
2196
2197 int wText = DEFAULT_ITEM_WIDTH;
2198
2199 int hText = cy;
2200 if ( m_windowStyle & wxTE_MULTILINE )
2201 {
2202 hText *= wxMax(wxMin(GetNumberOfLines(), 10), 2);
2203 }
2204 //else: for single line control everything is ok
2205
2206 // we have to add the adjustments for the control height only once, not
2207 // once per line, so do it after multiplication above
2208 hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
2209
2210 return wxSize(wText, hText);
2211 }
2212
2213 // ----------------------------------------------------------------------------
2214 // standard handlers for standard edit menu events
2215 // ----------------------------------------------------------------------------
2216
2217 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2218 {
2219 Cut();
2220 }
2221
2222 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2223 {
2224 Copy();
2225 }
2226
2227 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2228 {
2229 Paste();
2230 }
2231
2232 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2233 {
2234 Undo();
2235 }
2236
2237 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2238 {
2239 Redo();
2240 }
2241
2242 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
2243 {
2244 long from, to;
2245 GetSelection(& from, & to);
2246 if (from != -1 && to != -1)
2247 Remove(from, to);
2248 }
2249
2250 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2251 {
2252 SetSelection(-1, -1);
2253 }
2254
2255 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2256 {
2257 event.Enable( CanCut() );
2258 }
2259
2260 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2261 {
2262 event.Enable( CanCopy() );
2263 }
2264
2265 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2266 {
2267 event.Enable( CanPaste() );
2268 }
2269
2270 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2271 {
2272 event.Enable( CanUndo() );
2273 }
2274
2275 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2276 {
2277 event.Enable( CanRedo() );
2278 }
2279
2280 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2281 {
2282 long from, to;
2283 GetSelection(& from, & to);
2284 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2285 }
2286
2287 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2288 {
2289 event.Enable(GetLastPosition() > 0);
2290 }
2291
2292 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
2293 {
2294 #if wxUSE_RICHEDIT
2295 if (IsRich())
2296 {
2297 if (!m_privateContextMenu)
2298 {
2299 m_privateContextMenu = new wxMenu;
2300 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2301 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2302 m_privateContextMenu->AppendSeparator();
2303 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2304 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2305 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2306 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2307 m_privateContextMenu->AppendSeparator();
2308 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2309 }
2310 PopupMenu(m_privateContextMenu);
2311 return;
2312 }
2313 else
2314 #endif
2315 event.Skip();
2316 }
2317
2318 void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
2319 {
2320 // be sure the caret remains invisible if the user had hidden it
2321 if ( !m_isNativeCaretShown )
2322 {
2323 ::HideCaret(GetHwnd());
2324 }
2325
2326 event.Skip();
2327 }
2328
2329 // ----------------------------------------------------------------------------
2330 // Default colors for MSW text control
2331 //
2332 // Set default background color to the native white instead of
2333 // the default wxSYS_COLOUR_BTNFACE (is triggered with wxNullColour).
2334 // ----------------------------------------------------------------------------
2335
2336 wxVisualAttributes wxTextCtrl::GetDefaultAttributes() const
2337 {
2338 wxVisualAttributes attrs;
2339 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
2340 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
2341 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW); //white
2342
2343 return attrs;
2344 }
2345
2346 // the rest of the file only deals with the rich edit controls
2347 #if wxUSE_RICHEDIT
2348
2349 // ----------------------------------------------------------------------------
2350 // EN_LINK processing
2351 // ----------------------------------------------------------------------------
2352
2353 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2354 {
2355 NMHDR *hdr = (NMHDR* )lParam;
2356 switch ( hdr->code )
2357 {
2358 case EN_MSGFILTER:
2359 {
2360 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2361 UINT msg = msgf->msg;
2362
2363 // this is a bit crazy but richedit 1.0 sends us all mouse
2364 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2365 // generate the wxWin events for this message manually
2366 //
2367 // NB: in fact, this is still not totally correct as it does
2368 // send us WM_LBUTTONUP if the selection was cleared by the
2369 // last click -- so currently we get 2 events in this case,
2370 // but as I don't see any obvious way to check for this I
2371 // leave this code in place because it's still better than
2372 // not getting left up events at all
2373 if ( msg == WM_LBUTTONUP )
2374 {
2375 WXUINT flags = msgf->wParam;
2376 int x = GET_X_LPARAM(msgf->lParam),
2377 y = GET_Y_LPARAM(msgf->lParam);
2378
2379 HandleMouseEvent(msg, x, y, flags);
2380 }
2381 }
2382
2383 // return true to process the event (and false to ignore it)
2384 return true;
2385
2386 case EN_LINK:
2387 {
2388 const ENLINK *enlink = (ENLINK *)hdr;
2389
2390 switch ( enlink->msg )
2391 {
2392 case WM_SETCURSOR:
2393 // ok, so it is hardcoded - do we really nee to
2394 // customize it?
2395 {
2396 wxCursor cur(wxCURSOR_HAND);
2397 ::SetCursor(GetHcursorOf(cur));
2398 *result = TRUE;
2399 break;
2400 }
2401
2402 case WM_MOUSEMOVE:
2403 case WM_LBUTTONDOWN:
2404 case WM_LBUTTONUP:
2405 case WM_LBUTTONDBLCLK:
2406 case WM_RBUTTONDOWN:
2407 case WM_RBUTTONUP:
2408 case WM_RBUTTONDBLCLK:
2409 // send a mouse event
2410 {
2411 static const wxEventType eventsMouse[] =
2412 {
2413 wxEVT_MOTION,
2414 wxEVT_LEFT_DOWN,
2415 wxEVT_LEFT_UP,
2416 wxEVT_LEFT_DCLICK,
2417 wxEVT_RIGHT_DOWN,
2418 wxEVT_RIGHT_UP,
2419 wxEVT_RIGHT_DCLICK,
2420 };
2421
2422 // the event ids are consecutive
2423 wxMouseEvent
2424 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2425
2426 InitMouseEvent(evtMouse,
2427 GET_X_LPARAM(enlink->lParam),
2428 GET_Y_LPARAM(enlink->lParam),
2429 enlink->wParam);
2430
2431 wxTextUrlEvent event(m_windowId, evtMouse,
2432 enlink->chrg.cpMin,
2433 enlink->chrg.cpMax);
2434
2435 InitCommandEvent(event);
2436
2437 *result = ProcessCommand(event);
2438 }
2439 break;
2440 }
2441 }
2442 return true;
2443 }
2444
2445 // not processed, leave it to the base class
2446 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2447 }
2448
2449 // ----------------------------------------------------------------------------
2450 // colour setting for the rich edit controls
2451 // ----------------------------------------------------------------------------
2452
2453 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2454 {
2455 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2456 {
2457 // colour didn't really change
2458 return false;
2459 }
2460
2461 if ( IsRich() )
2462 {
2463 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2464 // EM_SETBKGNDCOLOR additionally
2465 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2466 }
2467
2468 return true;
2469 }
2470
2471 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2472 {
2473 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2474 {
2475 // colour didn't really change
2476 return false;
2477 }
2478
2479 if ( IsRich() )
2480 {
2481 // change the colour of everything
2482 CHARFORMAT cf;
2483 wxZeroMemory(cf);
2484 cf.cbSize = sizeof(cf);
2485 cf.dwMask = CFM_COLOR;
2486 cf.crTextColor = wxColourToRGB(colour);
2487 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2488 }
2489
2490 return true;
2491 }
2492
2493 // ----------------------------------------------------------------------------
2494 // styling support for rich edit controls
2495 // ----------------------------------------------------------------------------
2496
2497 #if wxUSE_RICHEDIT
2498
2499 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2500 {
2501 if ( !IsRich() )
2502 {
2503 // can't do it with normal text control
2504 return false;
2505 }
2506
2507 // the richedit 1.0 doesn't handle setting background colour, so don't
2508 // even try to do anything if it's the only thing we want to change
2509 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2510 !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2511 !style.HasTabs() )
2512 {
2513 // nothing to do: return true if there was really nothing to do and
2514 // false if we failed to set bg colour
2515 return !style.HasBackgroundColour();
2516 }
2517
2518 // order the range if needed
2519 if ( start > end )
2520 {
2521 long tmp = start;
2522 start = end;
2523 end = tmp;
2524 }
2525
2526 // we can only change the format of the selection, so select the range we
2527 // want and restore the old selection later
2528 long startOld, endOld;
2529 GetSelection(&startOld, &endOld);
2530
2531 // but do we really have to change the selection?
2532 bool changeSel = start != startOld || end != endOld;
2533
2534 if ( changeSel )
2535 {
2536 DoSetSelection(start, end, false /* don't scroll caret into view */);
2537 }
2538
2539 // initialize CHARFORMAT struct
2540 #if wxUSE_RICHEDIT2
2541 CHARFORMAT2 cf;
2542 #else
2543 CHARFORMAT cf;
2544 #endif
2545
2546 wxZeroMemory(cf);
2547
2548 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2549 // CHARFORMAT in that case
2550 #if wxUSE_RICHEDIT2
2551 if ( m_verRichEdit == 1 )
2552 {
2553 // this is the only thing the control is going to grok
2554 cf.cbSize = sizeof(CHARFORMAT);
2555 }
2556 else
2557 #endif
2558 {
2559 // CHARFORMAT or CHARFORMAT2
2560 cf.cbSize = sizeof(cf);
2561 }
2562
2563 if ( style.HasFont() )
2564 {
2565 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2566 // but using it doesn't seem to hurt neither so leaving it for now
2567
2568 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2569 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2570
2571 // fill in data from LOGFONT but recalculate lfHeight because we need
2572 // the real height in twips and not the negative number which
2573 // wxFillLogFont() returns (this is correct in general and works with
2574 // the Windows font mapper, but not here)
2575 LOGFONT lf;
2576 wxFillLogFont(&lf, &style.GetFont());
2577 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2578 cf.bCharSet = lf.lfCharSet;
2579 cf.bPitchAndFamily = lf.lfPitchAndFamily;
2580 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2581
2582 // also deal with underline/italic/bold attributes: note that we must
2583 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2584 // style to allow clearing it
2585 if ( lf.lfItalic )
2586 {
2587 cf.dwEffects |= CFE_ITALIC;
2588 }
2589
2590 if ( lf.lfWeight == FW_BOLD )
2591 {
2592 cf.dwEffects |= CFE_BOLD;
2593 }
2594
2595 if ( lf.lfUnderline )
2596 {
2597 cf.dwEffects |= CFE_UNDERLINE;
2598 }
2599
2600 // strikeout fonts are not supported by wxWidgets
2601 }
2602
2603 if ( style.HasTextColour() )
2604 {
2605 cf.dwMask |= CFM_COLOR;
2606 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2607 }
2608
2609 #if wxUSE_RICHEDIT2
2610 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2611 {
2612 cf.dwMask |= CFM_BACKCOLOR;
2613 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2614 }
2615 #endif // wxUSE_RICHEDIT2
2616
2617 // do format the selection
2618 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2619 SCF_SELECTION, (LPARAM)&cf) != 0;
2620 if ( !ok )
2621 {
2622 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2623 }
2624
2625 // now do the paragraph formatting
2626 PARAFORMAT2 pf;
2627 wxZeroMemory(pf);
2628 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2629 // PARAFORMAT in that case
2630 #if wxUSE_RICHEDIT2
2631 if ( m_verRichEdit == 1 )
2632 {
2633 // this is the only thing the control is going to grok
2634 pf.cbSize = sizeof(PARAFORMAT);
2635 }
2636 else
2637 #endif
2638 {
2639 // PARAFORMAT or PARAFORMAT2
2640 pf.cbSize = sizeof(pf);
2641 }
2642
2643 if (style.HasAlignment())
2644 {
2645 pf.dwMask |= PFM_ALIGNMENT;
2646 if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2647 pf.wAlignment = PFA_RIGHT;
2648 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2649 pf.wAlignment = PFA_CENTER;
2650 else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2651 pf.wAlignment = PFA_JUSTIFY;
2652 else
2653 pf.wAlignment = PFA_LEFT;
2654 }
2655
2656 if (style.HasLeftIndent())
2657 {
2658 pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2659
2660 // Convert from 1/10 mm to TWIPS
2661 pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2662 pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2663 }
2664
2665 if (style.HasRightIndent())
2666 {
2667 pf.dwMask |= PFM_RIGHTINDENT;
2668
2669 // Convert from 1/10 mm to TWIPS
2670 pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2671 }
2672
2673 if (style.HasTabs())
2674 {
2675 pf.dwMask |= PFM_TABSTOPS;
2676
2677 const wxArrayInt& tabs = style.GetTabs();
2678
2679 pf.cTabCount = (SHORT)wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2680 size_t i;
2681 for (i = 0; i < (size_t) pf.cTabCount; i++)
2682 {
2683 // Convert from 1/10 mm to TWIPS
2684 pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2685 }
2686 }
2687
2688 #if wxUSE_RICHEDIT2
2689 if ( m_verRichEdit > 1 )
2690 {
2691 if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
2692 {
2693 // Use RTL paragraphs in RTL mode to get proper layout
2694 pf.dwMask |= PFM_RTLPARA;
2695 pf.wEffects |= PFE_RTLPARA;
2696 }
2697 }
2698 #endif // wxUSE_RICHEDIT2
2699
2700 if ( pf.dwMask )
2701 {
2702 // do format the selection
2703 bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2704 0, (LPARAM) &pf) != 0;
2705 if ( !ok )
2706 {
2707 wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2708 }
2709 }
2710
2711 if ( changeSel )
2712 {
2713 // restore the original selection
2714 DoSetSelection(startOld, endOld, false);
2715 }
2716
2717 return ok;
2718 }
2719
2720 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2721 {
2722 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2723 return false;
2724
2725 if ( IsEditable() )
2726 {
2727 // we have to do this or the style wouldn't apply for the text typed by
2728 // the user
2729 wxTextPos posLast = GetLastPosition();
2730 SetStyle(posLast, posLast, m_defaultStyle);
2731 }
2732
2733 return true;
2734 }
2735
2736 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2737 {
2738 if ( !IsRich() )
2739 {
2740 // can't do it with normal text control
2741 return false;
2742 }
2743
2744 // initialize CHARFORMAT struct
2745 #if wxUSE_RICHEDIT2
2746 CHARFORMAT2 cf;
2747 #else
2748 CHARFORMAT cf;
2749 #endif
2750
2751 wxZeroMemory(cf);
2752
2753 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2754 // CHARFORMAT in that case
2755 #if wxUSE_RICHEDIT2
2756 if ( m_verRichEdit == 1 )
2757 {
2758 // this is the only thing the control is going to grok
2759 cf.cbSize = sizeof(CHARFORMAT);
2760 }
2761 else
2762 #endif
2763 {
2764 // CHARFORMAT or CHARFORMAT2
2765 cf.cbSize = sizeof(cf);
2766 }
2767 // we can only change the format of the selection, so select the range we
2768 // want and restore the old selection later
2769 long startOld, endOld;
2770 GetSelection(&startOld, &endOld);
2771
2772 // but do we really have to change the selection?
2773 bool changeSel = position != startOld || position != endOld;
2774
2775 if ( changeSel )
2776 {
2777 DoSetSelection(position, position+1, false /* don't scroll caret into view */);
2778 }
2779
2780 // get the selection formatting
2781 (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2782 SCF_SELECTION, (LPARAM)&cf) ;
2783
2784
2785 LOGFONT lf;
2786 lf.lfHeight = cf.yHeight;
2787 lf.lfWidth = 0;
2788 lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2789 lf.lfClipPrecision = 0;
2790 lf.lfEscapement = 0;
2791 wxStrcpy(lf.lfFaceName, cf.szFaceName);
2792
2793 //NOTE: we _MUST_ set each of these values to _something_ since we
2794 //do not call wxZeroMemory on the LOGFONT lf
2795 if (cf.dwEffects & CFE_ITALIC)
2796 lf.lfItalic = TRUE;
2797 else
2798 lf.lfItalic = FALSE;
2799
2800 lf.lfOrientation = 0;
2801 lf.lfPitchAndFamily = cf.bPitchAndFamily;
2802 lf.lfQuality = 0;
2803
2804 if (cf.dwEffects & CFE_STRIKEOUT)
2805 lf.lfStrikeOut = TRUE;
2806 else
2807 lf.lfStrikeOut = FALSE;
2808
2809 if (cf.dwEffects & CFE_UNDERLINE)
2810 lf.lfUnderline = TRUE;
2811 else
2812 lf.lfUnderline = FALSE;
2813
2814 if (cf.dwEffects & CFE_BOLD)
2815 lf.lfWeight = FW_BOLD;
2816 else
2817 lf.lfWeight = FW_NORMAL;
2818
2819 wxFont font = wxCreateFontFromLogFont(& lf);
2820 if (font.Ok())
2821 {
2822 style.SetFont(font);
2823 }
2824 style.SetTextColour(wxColour(cf.crTextColor));
2825
2826 #if wxUSE_RICHEDIT2
2827 if ( m_verRichEdit != 1 )
2828 {
2829 // cf.dwMask |= CFM_BACKCOLOR;
2830 style.SetBackgroundColour(wxColour(cf.crBackColor));
2831 }
2832 #endif // wxUSE_RICHEDIT2
2833
2834 // now get the paragraph formatting
2835 PARAFORMAT2 pf;
2836 wxZeroMemory(pf);
2837 // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2838 // PARAFORMAT in that case
2839 #if wxUSE_RICHEDIT2
2840 if ( m_verRichEdit == 1 )
2841 {
2842 // this is the only thing the control is going to grok
2843 pf.cbSize = sizeof(PARAFORMAT);
2844 }
2845 else
2846 #endif
2847 {
2848 // PARAFORMAT or PARAFORMAT2
2849 pf.cbSize = sizeof(pf);
2850 }
2851
2852 // do format the selection
2853 (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2854
2855 style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2856 style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2857
2858 if (pf.wAlignment == PFA_CENTER)
2859 style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2860 else if (pf.wAlignment == PFA_RIGHT)
2861 style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2862 else if (pf.wAlignment == PFA_JUSTIFY)
2863 style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2864 else
2865 style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2866
2867 wxArrayInt tabStops;
2868 size_t i;
2869 for (i = 0; i < (size_t) pf.cTabCount; i++)
2870 {
2871 tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2872 }
2873
2874 if ( changeSel )
2875 {
2876 // restore the original selection
2877 DoSetSelection(startOld, endOld, false);
2878 }
2879
2880 return true;
2881 }
2882
2883 #endif
2884
2885 // ----------------------------------------------------------------------------
2886 // wxRichEditModule
2887 // ----------------------------------------------------------------------------
2888
2889 static const HINSTANCE INVALID_HINSTANCE = (HINSTANCE)-1;
2890
2891 bool wxRichEditModule::OnInit()
2892 {
2893 // don't do anything - we will load it when needed
2894 return true;
2895 }
2896
2897 void wxRichEditModule::OnExit()
2898 {
2899 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2900 {
2901 if ( ms_hRichEdit[i] && ms_hRichEdit[i] != INVALID_HINSTANCE )
2902 {
2903 ::FreeLibrary(ms_hRichEdit[i]);
2904 ms_hRichEdit[i] = NULL;
2905 }
2906 }
2907 #if wxUSE_INKEDIT
2908 if (ms_inkEditLib.IsLoaded())
2909 ms_inkEditLib.Unload();
2910 #endif
2911 }
2912
2913 /* static */
2914 bool wxRichEditModule::Load(Version version)
2915 {
2916 if ( ms_hRichEdit[version] == INVALID_HINSTANCE )
2917 {
2918 // we had already tried to load it and failed
2919 return false;
2920 }
2921
2922 if ( ms_hRichEdit[version] )
2923 {
2924 // we've already got this one
2925 return true;
2926 }
2927
2928 static const wxChar *dllnames[] =
2929 {
2930 _T("riched32"),
2931 _T("riched20"),
2932 _T("msftedit"),
2933 };
2934
2935 wxCOMPILE_TIME_ASSERT( WXSIZEOF(dllnames) == Version_Max,
2936 RichEditDllNamesVersionsMismatch );
2937
2938 ms_hRichEdit[version] = ::LoadLibrary(dllnames[version]);
2939
2940 if ( !ms_hRichEdit[version] )
2941 {
2942 ms_hRichEdit[version] = INVALID_HINSTANCE;
2943
2944 return false;
2945 }
2946
2947 return true;
2948 }
2949
2950 #if wxUSE_INKEDIT
2951 // load the InkEdit library
2952 bool wxRichEditModule::LoadInkEdit()
2953 {
2954 static wxDynamicLibrary ms_inkEditLib;
2955 static bool ms_inkEditLibLoadAttemped;
2956 if (ms_inkEditLibLoadAttemped)
2957 ms_inkEditLib.IsLoaded();
2958
2959 ms_inkEditLibLoadAttemped = true;
2960
2961 wxLogNull logNull;
2962 return ms_inkEditLib.Load(wxT("inked"));
2963 }
2964 #endif
2965
2966
2967 #endif // wxUSE_RICHEDIT
2968
2969 #endif // wxUSE_TEXTCTRL && !(__SMARTPHONE__ && __WXWINCE__)

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