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[wxWidgets.git] / src / gtk / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: textctrl.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // Id: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Vadim Zeitlin
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
11 #pragma implementation "textctrl.h"
12 #endif
13
14 // For compilers that support precompilation, includes "wx.h".
15 #include "wx/wxprec.h"
16
17 #include "wx/textctrl.h"
18 #include "wx/utils.h"
19 #include "wx/intl.h"
20 #include "wx/log.h"
21 #include "wx/settings.h"
22 #include "wx/panel.h"
23 #include "wx/strconv.h"
24 #include "wx/fontutil.h" // for wxNativeFontInfo (GetNativeFontInfo())
25
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #include <ctype.h>
29 #include <math.h> // for fabs
30
31 #include "wx/gtk/private.h"
32 #include <gdk/gdkkeysyms.h>
33
34 //-----------------------------------------------------------------------------
35 // idle system
36 //-----------------------------------------------------------------------------
37
38 extern void wxapp_install_idle_handler();
39 extern bool g_isIdle;
40
41 //-----------------------------------------------------------------------------
42 // data
43 //-----------------------------------------------------------------------------
44
45 extern bool g_blockEventsOnDrag;
46 extern wxCursor g_globalCursor;
47 extern wxWindowGTK *g_delayedFocus;
48
49 // ----------------------------------------------------------------------------
50 // helpers
51 // ----------------------------------------------------------------------------
52
53 #ifdef __WXGTK20__
54 static void wxGtkTextInsert(GtkWidget *text,
55 GtkTextBuffer *text_buffer,
56 const wxTextAttr& attr,
57 wxCharBuffer buffer)
58
59 {
60 PangoFontDescription *font_description = attr.HasFont()
61 ? attr.GetFont().GetNativeFontInfo()->description
62 : NULL;
63
64 GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
65 : NULL;
66
67 GdkColor *colBg = attr.HasBackgroundColour()
68 ? attr.GetBackgroundColour().GetColor()
69 : NULL;
70
71 GtkTextTag *tag;
72 tag = gtk_text_buffer_create_tag( text_buffer, NULL, "font-desc", font_description,
73 "foreground-gdk", colFg,
74 "background-gdk", colBg, NULL );
75
76 GtkTextIter iter;
77 gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
78 gtk_text_buffer_get_insert (text_buffer) );
79
80 gtk_text_buffer_insert_with_tags( text_buffer, &iter, buffer, strlen(buffer), tag, NULL );
81 }
82 #else
83 static void wxGtkTextInsert(GtkWidget *text,
84 const wxTextAttr& attr,
85 const char *txt,
86 size_t len)
87 {
88 GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
89 : NULL;
90
91 GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
92 : NULL;
93
94 GdkColor *colBg = attr.HasBackgroundColour()
95 ? attr.GetBackgroundColour().GetColor()
96 : NULL;
97
98 gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
99 }
100 #endif // GTK 1.x
101
102 // ----------------------------------------------------------------------------
103 // "insert_text" for GtkEntry
104 // ----------------------------------------------------------------------------
105
106 static void
107 gtk_insert_text_callback(GtkEditable *editable,
108 const gchar *new_text,
109 gint new_text_length,
110 gint *position,
111 wxTextCtrl *win)
112 {
113 if (g_isIdle)
114 wxapp_install_idle_handler();
115
116 // we should only be called if we have a max len limit at all
117 GtkEntry *entry = GTK_ENTRY (editable);
118
119 wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
120
121 // check that we don't overflow the max length limit
122 //
123 // FIXME: this doesn't work when we paste a string which is going to be
124 // truncated
125 if ( entry->text_length == entry->text_max_length )
126 {
127 // we don't need to run the base class version at all
128 gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
129
130 // remember that the next changed signal is to be ignored to avoid
131 // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
132 win->IgnoreNextTextUpdate();
133
134 // and generate the correct one ourselves
135 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
136 event.SetEventObject(win);
137 event.SetString(win->GetValue());
138 win->GetEventHandler()->ProcessEvent( event );
139 }
140 }
141
142 //-----------------------------------------------------------------------------
143 // "changed"
144 //-----------------------------------------------------------------------------
145
146 static void
147 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
148 {
149 if ( win->IgnoreTextUpdate() )
150 return;
151
152 if (!win->m_hasVMT) return;
153
154 if (g_isIdle)
155 wxapp_install_idle_handler();
156
157 win->SetModified();
158 win->UpdateFontIfNeeded();
159
160 wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
161 event.SetEventObject( win );
162 event.SetString( win->GetValue() );
163 win->GetEventHandler()->ProcessEvent( event );
164 }
165
166 //-----------------------------------------------------------------------------
167 // "changed" from vertical scrollbar
168 //-----------------------------------------------------------------------------
169
170 #ifndef __WXGTK20__
171 static void
172 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
173 {
174 if (!win->m_hasVMT) return;
175
176 if (g_isIdle)
177 wxapp_install_idle_handler();
178
179 win->CalculateScrollbar();
180 }
181 #endif
182
183 // ----------------------------------------------------------------------------
184 // redraw callback for multiline text
185 // ----------------------------------------------------------------------------
186
187 #ifndef __WXGTK20__
188
189 // redrawing a GtkText from inside a wxYield() call results in crashes (the
190 // text sample shows it in its "Add lines" command which shows wxProgressDialog
191 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
192 // don't do anything if we're inside wxYield()
193
194 extern bool wxIsInsideYield;
195
196 extern "C" {
197 typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
198 }
199
200 static GtkDrawCallback gs_gtk_text_draw = NULL;
201
202 extern "C"
203 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
204 {
205 if ( !wxIsInsideYield )
206 {
207 wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
208 _T("infinite recursion in wxgtk_text_draw aborted") );
209
210 gs_gtk_text_draw(widget, rect);
211 }
212 }
213
214 #endif // __WXGTK20__
215
216 //-----------------------------------------------------------------------------
217 // wxTextCtrl
218 //-----------------------------------------------------------------------------
219
220 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
221
222 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
223 EVT_CHAR(wxTextCtrl::OnChar)
224
225 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
226 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
227 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
228 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
229 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
230
231 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
232 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
233 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
234 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
235 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
236 END_EVENT_TABLE()
237
238 void wxTextCtrl::Init()
239 {
240 m_ignoreNextUpdate =
241 m_modified = FALSE;
242 m_updateFont = FALSE;
243 m_text =
244 m_vScrollbar = (GtkWidget *)NULL;
245 }
246
247 wxTextCtrl::wxTextCtrl( wxWindow *parent,
248 wxWindowID id,
249 const wxString &value,
250 const wxPoint &pos,
251 const wxSize &size,
252 long style,
253 const wxValidator& validator,
254 const wxString &name )
255 {
256 Init();
257
258 Create( parent, id, value, pos, size, style, validator, name );
259 }
260
261 bool wxTextCtrl::Create( wxWindow *parent,
262 wxWindowID id,
263 const wxString &value,
264 const wxPoint &pos,
265 const wxSize &size,
266 long style,
267 const wxValidator& validator,
268 const wxString &name )
269 {
270 m_needParent = TRUE;
271 m_acceptsFocus = TRUE;
272
273 if (!PreCreation( parent, pos, size ) ||
274 !CreateBase( parent, id, pos, size, style, validator, name ))
275 {
276 wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
277 return FALSE;
278 }
279
280
281 m_vScrollbarVisible = FALSE;
282
283 bool multi_line = (style & wxTE_MULTILINE) != 0;
284
285 #ifdef __WXGTK20__
286 GtkTextBuffer *buffer = NULL;
287 #endif
288
289 if (multi_line)
290 {
291 #ifdef __WXGTK20__
292 // Create view
293 m_text = gtk_text_view_new();
294
295 buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
296
297 // create scrolled window
298 m_widget = gtk_scrolled_window_new( NULL, NULL );
299 gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
300 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
301
302 // Insert view into scrolled window
303 gtk_container_add( GTK_CONTAINER(m_widget), m_text );
304
305 // Global settings which can be overridden by tags, I guess.
306 if (HasFlag( wxHSCROLL ))
307 gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
308 else
309 gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
310
311 if (!HasFlag(wxNO_BORDER))
312 gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
313 #else
314 // create our control ...
315 m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
316
317 // ... and put into the upper left hand corner of the table
318 bool bHasHScrollbar = FALSE;
319 m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
320 GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
321 gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
322 (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
323 (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
324 0, 0);
325
326 // always wrap words
327 gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
328
329 // finally, put the vertical scrollbar in the upper right corner
330 m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
331 GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
332 gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
333 GTK_FILL,
334 (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
335 0, 0);
336 #endif
337 }
338 else
339 {
340 // a single-line text control: no need for scrollbars
341 m_widget =
342 m_text = gtk_entry_new();
343 }
344
345 m_parent->DoAddChild( this );
346
347 m_focusWidget = m_text;
348
349 PostCreation();
350 InheritAttributes();
351
352 wxSize size_best( DoGetBestSize() );
353 wxSize new_size( size );
354 if (new_size.x == -1)
355 new_size.x = size_best.x;
356 if (new_size.y == -1)
357 new_size.y = size_best.y;
358 if ((new_size.x != size.x) || (new_size.y != size.y))
359 SetSize( new_size.x, new_size.y );
360
361 if (multi_line)
362 gtk_widget_show(m_text);
363
364 #ifndef __WXGTK20__
365 if (multi_line)
366 {
367 gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
368 (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
369
370 // only initialize gs_gtk_text_draw once, starting from the next the
371 // klass::draw will already be wxgtk_text_draw
372 if ( !gs_gtk_text_draw )
373 {
374 GtkDrawCallback&
375 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
376
377 gs_gtk_text_draw = draw;
378
379 draw = wxgtk_text_draw;
380 }
381 }
382 #endif // GTK+ 1.x
383
384 if (!value.IsEmpty())
385 {
386 #ifdef __WXGTK20__
387 SetValue( value );
388 #else
389
390 #if !GTK_CHECK_VERSION(1, 2, 0)
391 // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
392 // gtk_editable_insert_text()
393 gtk_widget_realize(m_text);
394 #endif // GTK 1.0
395
396 gint tmp = 0;
397 #if wxUSE_UNICODE
398 wxWX2MBbuf val = value.mbc_str();
399 gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
400 #else
401 gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
402 #endif
403
404 if (multi_line)
405 {
406 // Bring editable's cursor uptodate. Bug in GTK.
407 SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
408 }
409
410 #endif
411 }
412
413 if (style & wxTE_PASSWORD)
414 {
415 if (!multi_line)
416 gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
417 }
418
419 if (style & wxTE_READONLY)
420 {
421 if (!multi_line)
422 gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
423 #ifdef __WXGTK20__
424 else
425 gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
426 }
427 #else
428 }
429 else
430 {
431 if (multi_line)
432 gtk_text_set_editable( GTK_TEXT(m_text), 1 );
433 }
434 #endif
435
436 // We want to be notified about text changes.
437 #ifdef __WXGTK20__
438 if (multi_line)
439 {
440 g_signal_connect( G_OBJECT(buffer), "changed",
441 GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
442 }
443 else
444 #endif
445 {
446 gtk_signal_connect( GTK_OBJECT(m_text), "changed",
447 GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
448 }
449
450 // we don't set a valid background colour, because the window
451 // manager should use a default one
452 m_backgroundColour = wxColour();
453
454 wxColour colFg = parent->GetForegroundColour();
455 SetForegroundColour( colFg );
456
457 m_cursor = wxCursor( wxCURSOR_IBEAM );
458
459 wxTextAttr attrDef( colFg, m_backgroundColour, parent->GetFont() );
460 SetDefaultStyle( attrDef );
461
462 Show( TRUE );
463
464 return TRUE;
465 }
466
467 void wxTextCtrl::CalculateScrollbar()
468 {
469 #ifndef __WXGTK20__
470 if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
471
472 GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
473
474 if (adj->upper - adj->page_size < 0.8)
475 {
476 if (m_vScrollbarVisible)
477 {
478 gtk_widget_hide( m_vScrollbar );
479 m_vScrollbarVisible = FALSE;
480 }
481 }
482 else
483 {
484 if (!m_vScrollbarVisible)
485 {
486 gtk_widget_show( m_vScrollbar );
487 m_vScrollbarVisible = TRUE;
488 }
489 }
490 #endif
491 }
492
493 wxString wxTextCtrl::GetValue() const
494 {
495 wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
496
497 wxString tmp;
498 if (m_windowStyle & wxTE_MULTILINE)
499 {
500 #ifdef __WXGTK20__
501 GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
502
503 GtkTextIter start;
504 gtk_text_buffer_get_start_iter( text_buffer, &start );
505 GtkTextIter end;
506 gtk_text_buffer_get_end_iter( text_buffer, &end );
507 gchar *text = gtk_text_buffer_get_text( text_buffer, &start, &end, TRUE );
508
509 #if wxUSE_UNICODE
510 wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
511 #else
512 wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
513 #endif
514 tmp = buffer;
515
516 g_free( text );
517 #else
518 gint len = gtk_text_get_length( GTK_TEXT(m_text) );
519 char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
520 tmp = text;
521 g_free( text );
522 #endif
523 }
524 else
525 {
526 tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
527 }
528
529 return tmp;
530 }
531
532 void wxTextCtrl::SetValue( const wxString &value )
533 {
534 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
535
536 if (m_windowStyle & wxTE_MULTILINE)
537 {
538 #ifdef __WXGTK20__
539
540 #if wxUSE_UNICODE
541 wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
542 #else
543 wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
544 #endif
545 GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
546 gtk_text_buffer_set_text( text_buffer, buffer, strlen(buffer) );
547
548 #else
549 gint len = gtk_text_get_length( GTK_TEXT(m_text) );
550 gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
551 len = 0;
552 gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
553 #endif
554 }
555 else
556 {
557 gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
558 }
559
560 // GRG, Jun/2000: Changed this after a lot of discussion in
561 // the lists. wxWindows 2.2 will have a set of flags to
562 // customize this behaviour.
563 SetInsertionPoint(0);
564
565 m_modified = FALSE;
566 }
567
568 void wxTextCtrl::WriteText( const wxString &text )
569 {
570 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
571
572 if ( text.empty() )
573 return;
574
575 if ( m_windowStyle & wxTE_MULTILINE )
576 {
577 #ifdef __WXGTK20__
578
579 #if wxUSE_UNICODE
580 wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
581 #else
582 wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
583 #endif
584 GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
585
586 // TODO: Call whatever is needed to delete the selection.
587 wxGtkTextInsert( m_text, text_buffer, m_defaultStyle, buffer );
588
589 GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
590 // Scroll to cursor, but only if scrollbar thumb is at the very bottom
591 if ( adj->value == adj->upper - adj->page_size )
592 {
593 gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
594 gtk_text_buffer_get_insert( text_buffer ), 0.0, FALSE, 0.0, 1.0 );
595 }
596 #else // GTK 1.x
597 // After cursor movements, gtk_text_get_point() is wrong by one.
598 gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
599
600 // always use m_defaultStyle, even if it is empty as otherwise
601 // resetting the style and appending some more text wouldn't work: if
602 // we don't specify the style explicitly, the old style would be used
603 gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
604 wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
605
606 // we called wxGtkTextInsert with correct font, no need to do anything
607 // in UpdateFontIfNeeded() any longer
608 if ( !text.empty() )
609 {
610 m_updateFont = FALSE;
611 }
612
613 // Bring editable's cursor back uptodate.
614 SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
615 #endif // GTK 1.x/2.0
616 }
617 else // single line
618 {
619 // First remove the selection if there is one
620 gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
621
622 // This moves the cursor pos to behind the inserted text.
623 gint len = GET_EDITABLE_POS(m_text);
624
625 #ifdef __WXGTK20__
626
627 #if wxUSE_UNICODE
628 wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
629 #else
630 wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
631 #endif
632 gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
633
634 #else
635 gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
636 #endif
637
638 // Bring entry's cursor uptodate.
639 gtk_entry_set_position( GTK_ENTRY(m_text), len );
640 }
641
642 m_modified = TRUE;
643 }
644
645 void wxTextCtrl::AppendText( const wxString &text )
646 {
647 SetInsertionPointEnd();
648 WriteText( text );
649 }
650
651 wxString wxTextCtrl::GetLineText( long lineNo ) const
652 {
653 if (m_windowStyle & wxTE_MULTILINE)
654 {
655 #ifndef __WXGTK20__
656 gint len = gtk_text_get_length( GTK_TEXT(m_text) );
657 char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
658
659 if (text)
660 {
661 wxString buf(wxT(""));
662 long i;
663 int currentLine = 0;
664 for (i = 0; currentLine != lineNo && text[i]; i++ )
665 if (text[i] == '\n')
666 currentLine++;
667 // Now get the text
668 int j;
669 for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
670 buf += text[i];
671
672 g_free( text );
673 return buf;
674 }
675 else
676 {
677 return wxEmptyString;
678 }
679 #else
680 GtkTextBuffer *text_buffer;
681 text_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(m_text));
682 GtkTextIter line;
683 gtk_text_buffer_get_iter_at_line(text_buffer,&line,lineNo);
684 GtkTextIter end;
685 gtk_text_buffer_get_end_iter(text_buffer,&end );
686 gchar *text = gtk_text_buffer_get_text(text_buffer,&line,&end,TRUE);
687 wxString result(text);
688 g_free(text);
689 return result.BeforeFirst(wxT('\n'));
690 #endif
691 }
692 else
693 {
694 if (lineNo == 0) return GetValue();
695 return wxEmptyString;
696 }
697 }
698
699 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
700 {
701 /* If you implement this, don't forget to update the documentation!
702 * (file docs/latex/wx/text.tex) */
703 wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
704 }
705
706 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
707 {
708 if ( m_windowStyle & wxTE_MULTILINE )
709 {
710 wxString text = GetValue();
711
712 // cast to prevent warning. But pos really should've been unsigned.
713 if( (unsigned long)pos > text.Len() )
714 return FALSE;
715
716 *x=0; // First Col
717 *y=0; // First Line
718
719 const wxChar* stop = text.c_str() + pos;
720 for ( const wxChar *p = text.c_str(); p < stop; p++ )
721 {
722 if (*p == wxT('\n'))
723 {
724 (*y)++;
725 *x=0;
726 }
727 else
728 (*x)++;
729 }
730 }
731 else // single line control
732 {
733 if ( pos <= GTK_ENTRY(m_text)->text_length )
734 {
735 *y = 0;
736 *x = pos;
737 }
738 else
739 {
740 // index out of bounds
741 return FALSE;
742 }
743 }
744
745 return TRUE;
746 }
747
748 long wxTextCtrl::XYToPosition(long x, long y ) const
749 {
750 if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
751
752 long pos=0;
753 for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
754
755 pos += x;
756 return pos;
757 }
758
759 int wxTextCtrl::GetLineLength(long lineNo) const
760 {
761 wxString str = GetLineText (lineNo);
762 return (int) str.Length();
763 }
764
765 int wxTextCtrl::GetNumberOfLines() const
766 {
767 if (m_windowStyle & wxTE_MULTILINE)
768 {
769 #ifdef __WXGTK20__
770 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
771
772 return gtk_text_buffer_get_line_count( buffer );
773 #else
774 gint len = gtk_text_get_length( GTK_TEXT(m_text) );
775 char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
776
777 if (text)
778 {
779 int currentLine = 0;
780 for (int i = 0; i < len; i++ )
781 {
782 if (text[i] == '\n')
783 currentLine++;
784 }
785 g_free( text );
786
787 // currentLine is 0 based, add 1 to get number of lines
788 return currentLine + 1;
789 }
790 else
791 {
792 return 0;
793 }
794 #endif
795 }
796 else
797 {
798 return 1;
799 }
800 }
801
802 void wxTextCtrl::SetInsertionPoint( long pos )
803 {
804 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
805
806 if (m_windowStyle & wxTE_MULTILINE)
807 {
808 #ifdef __WXGTK20__
809 GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
810 GtkTextIter iter;
811 gtk_text_buffer_get_iter_at_offset( text_buffer, &iter, pos );
812 gtk_text_buffer_place_cursor( text_buffer, &iter );
813 #else
814 gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
815 GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
816
817 /* we fake a set_point by inserting and deleting. as the user
818 isn't supposed to get to know about this non-sense, we
819 disconnect so that no events are sent to the user program. */
820
821 gint tmp = (gint)pos;
822 gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
823 gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
824
825 gtk_signal_connect( GTK_OBJECT(m_text), "changed",
826 GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
827
828 // bring editable's cursor uptodate. Bug in GTK.
829 SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
830 #endif
831 }
832 else
833 {
834 gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
835
836 // Bring editable's cursor uptodate. Bug in GTK.
837 SET_EDITABLE_POS(m_text, (guint32)pos);
838 }
839 }
840
841 void wxTextCtrl::SetInsertionPointEnd()
842 {
843 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
844
845 if (m_windowStyle & wxTE_MULTILINE)
846 {
847 #ifdef __WXGTK20__
848 GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
849 GtkTextIter end;
850 gtk_text_buffer_get_end_iter( text_buffer, &end );
851 gtk_text_buffer_place_cursor( text_buffer, &end );
852 #else
853 SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
854 #endif
855 }
856 else
857 {
858 gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
859 }
860 }
861
862 void wxTextCtrl::SetEditable( bool editable )
863 {
864 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
865
866 if (m_windowStyle & wxTE_MULTILINE)
867 {
868 #ifdef __WXGTK20__
869 gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
870 #else
871 gtk_text_set_editable( GTK_TEXT(m_text), editable );
872 #endif
873 }
874 else
875 {
876 gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
877 }
878 }
879
880 bool wxTextCtrl::Enable( bool enable )
881 {
882 if (!wxWindowBase::Enable(enable))
883 {
884 // nothing to do
885 return FALSE;
886 }
887
888 if (m_windowStyle & wxTE_MULTILINE)
889 {
890 #ifdef __WXGTK20__
891 SetEditable( enable );
892 #else
893 gtk_text_set_editable( GTK_TEXT(m_text), enable );
894 OnParentEnable(enable);
895 #endif
896 }
897 else
898 {
899 gtk_widget_set_sensitive( m_text, enable );
900 }
901
902 return TRUE;
903 }
904
905 // wxGTK-specific: called recursively by Enable,
906 // to give widgets an oppprtunity to correct their colours after they
907 // have been changed by Enable
908 void wxTextCtrl::OnParentEnable( bool enable )
909 {
910 // If we have a custom background colour, we use this colour in both
911 // disabled and enabled mode, or we end up with a different colour under the
912 // text.
913 wxColour oldColour = GetBackgroundColour();
914 if (oldColour.Ok())
915 {
916 // Need to set twice or it'll optimize the useful stuff out
917 if (oldColour == * wxWHITE)
918 SetBackgroundColour(*wxBLACK);
919 else
920 SetBackgroundColour(*wxWHITE);
921 SetBackgroundColour(oldColour);
922 }
923 }
924
925 void wxTextCtrl::MarkDirty()
926 {
927 m_modified = TRUE;
928 }
929
930 void wxTextCtrl::DiscardEdits()
931 {
932 m_modified = FALSE;
933 }
934
935 // ----------------------------------------------------------------------------
936 // max text length support
937 // ----------------------------------------------------------------------------
938
939 void wxTextCtrl::IgnoreNextTextUpdate()
940 {
941 m_ignoreNextUpdate = TRUE;
942 }
943
944 bool wxTextCtrl::IgnoreTextUpdate()
945 {
946 if ( m_ignoreNextUpdate )
947 {
948 m_ignoreNextUpdate = FALSE;
949
950 return TRUE;
951 }
952
953 return FALSE;
954 }
955
956 void wxTextCtrl::SetMaxLength(unsigned long len)
957 {
958 if ( !HasFlag(wxTE_MULTILINE) )
959 {
960 gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
961
962 // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
963 // we had tried to enter more text than allowed by max text length and
964 // the text wasn't really changed
965 //
966 // to detect this and generate TEXT_MAXLEN event instead of
967 // TEXT_CHANGED one in this case we also catch "insert_text" signal
968 //
969 // when max len is set to 0 we disconnect our handler as it means that
970 // we shouldn't check anything any more
971 if ( len )
972 {
973 gtk_signal_connect( GTK_OBJECT(m_text),
974 "insert_text",
975 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
976 (gpointer)this);
977 }
978 else // no checking
979 {
980 gtk_signal_disconnect_by_func
981 (
982 GTK_OBJECT(m_text),
983 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
984 (gpointer)this
985 );
986 }
987 }
988 }
989
990 void wxTextCtrl::SetSelection( long from, long to )
991 {
992 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
993
994 if (from == -1 && to == -1)
995 {
996 from = 0;
997 to = GetValue().Length();
998 }
999
1000 #ifndef __WXGTK20__
1001 if ( (m_windowStyle & wxTE_MULTILINE) &&
1002 !GTK_TEXT(m_text)->line_start_cache )
1003 {
1004 // tell the programmer that it didn't work
1005 wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1006 return;
1007 }
1008 #endif
1009
1010 if (m_windowStyle & wxTE_MULTILINE)
1011 {
1012 #ifdef __WXGTK20__
1013 GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1014
1015 GtkTextIter fromi, toi;
1016 gtk_text_buffer_get_iter_at_offset( buf, &fromi, from );
1017 gtk_text_buffer_get_iter_at_offset( buf, &toi, to );
1018
1019 gtk_text_buffer_place_cursor( buf, &toi );
1020 gtk_text_buffer_move_mark_by_name( buf, "selection_bound", &fromi );
1021 #else
1022 gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1023 #endif
1024 }
1025 else
1026 {
1027 gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1028 }
1029 }
1030
1031 void wxTextCtrl::ShowPosition( long pos )
1032 {
1033 if (m_windowStyle & wxTE_MULTILINE)
1034 {
1035 #ifdef __WXGTK20__
1036 GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1037 GtkTextIter iter;
1038 gtk_text_buffer_get_start_iter( buf, &iter );
1039 gtk_text_iter_set_offset( &iter, pos );
1040 GtkTextMark *mark = gtk_text_buffer_create_mark( buf, NULL, &iter, TRUE );
1041 gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1042 #else // GTK 1.x
1043 GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1044 float totalLines = (float) GetNumberOfLines();
1045 long posX;
1046 long posY;
1047 PositionToXY(pos, &posX, &posY);
1048 float posLine = (float) posY;
1049 float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1050 gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1051 #endif // GTK 1.x/2.x
1052 }
1053 }
1054
1055 long wxTextCtrl::GetInsertionPoint() const
1056 {
1057 wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1058
1059 #ifdef __WXGTK20__
1060 if (m_windowStyle & wxTE_MULTILINE)
1061 {
1062 GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1063
1064 // There is no direct accessor for the cursor, but
1065 // internally, the cursor is the "mark" called
1066 // "insert" in the text view's btree structure.
1067
1068 GtkTextMark *mark = gtk_text_buffer_get_insert( text_buffer );
1069 GtkTextIter cursor;
1070 gtk_text_buffer_get_iter_at_mark( text_buffer, &cursor, mark );
1071
1072 return gtk_text_iter_get_offset( &cursor );
1073 }
1074 else
1075 #endif
1076 {
1077 return (long) GET_EDITABLE_POS(m_text);
1078 }
1079 }
1080
1081 long wxTextCtrl::GetLastPosition() const
1082 {
1083 wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1084
1085 int pos = 0;
1086
1087 if (m_windowStyle & wxTE_MULTILINE)
1088 {
1089 #ifdef __WXGTK20__
1090 GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1091 GtkTextIter end;
1092 gtk_text_buffer_get_end_iter( text_buffer, &end );
1093
1094 pos = gtk_text_iter_get_offset( &end );
1095 #else
1096 pos = gtk_text_get_length( GTK_TEXT(m_text) );
1097 #endif
1098 }
1099 else
1100 {
1101 pos = GTK_ENTRY(m_text)->text_length;
1102 }
1103
1104 return (long)pos;
1105 }
1106
1107 void wxTextCtrl::Remove( long from, long to )
1108 {
1109 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1110
1111 #ifdef __WXGTK20__
1112 if (m_windowStyle & wxTE_MULTILINE)
1113 {
1114 GtkTextBuffer *
1115 text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1116
1117 GtkTextIter fromi, toi;
1118 gtk_text_buffer_get_iter_at_offset( text_buffer, &fromi, from );
1119 gtk_text_buffer_get_iter_at_offset( text_buffer, &toi, to );
1120
1121 gtk_text_buffer_delete( text_buffer, &fromi, &toi );
1122 }
1123 else // single line
1124 #endif
1125 gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1126 }
1127
1128 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1129 {
1130 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1131
1132 Remove( from, to );
1133
1134 if (!value.IsEmpty())
1135 {
1136 #ifdef __WXGTK20__
1137 SetInsertionPoint( from );
1138 WriteText( value );
1139 #else // GTK 1.x
1140 gint pos = (gint)from;
1141 #if wxUSE_UNICODE
1142 wxWX2MBbuf buf = value.mbc_str();
1143 gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1144 #else
1145 gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1146 #endif // wxUSE_UNICODE
1147 #endif // GTK 1.x/2.x
1148 }
1149 }
1150
1151 void wxTextCtrl::Cut()
1152 {
1153 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1154
1155 #ifndef __WXGTK20__
1156 gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1157 #endif
1158 }
1159
1160 void wxTextCtrl::Copy()
1161 {
1162 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1163
1164 #ifndef __WXGTK20__
1165 gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1166 #endif
1167 }
1168
1169 void wxTextCtrl::Paste()
1170 {
1171 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1172
1173 #ifndef __WXGTK20__
1174 gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1175 #endif
1176 }
1177
1178 // Undo/redo
1179 void wxTextCtrl::Undo()
1180 {
1181 // TODO
1182 wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1183 }
1184
1185 void wxTextCtrl::Redo()
1186 {
1187 // TODO
1188 wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1189 }
1190
1191 bool wxTextCtrl::CanUndo() const
1192 {
1193 // TODO
1194 //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1195 return FALSE;
1196 }
1197
1198 bool wxTextCtrl::CanRedo() const
1199 {
1200 // TODO
1201 //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1202 return FALSE;
1203 }
1204
1205 // If the return values from and to are the same, there is no
1206 // selection.
1207 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1208 {
1209 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1210
1211 gint from = -1;
1212 gint to = -1;
1213 bool haveSelection = FALSE;
1214
1215 #ifdef __WXGTK20__
1216 if (m_windowStyle & wxTE_MULTILINE)
1217 {
1218 GtkTextBuffer *buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (m_text));
1219 GtkTextIter ifrom, ito;
1220 if ( gtk_text_buffer_get_selection_bounds(buffer, &ifrom, &ito) )
1221 {
1222 haveSelection = TRUE;
1223 from = gtk_text_iter_get_offset(&ifrom);
1224 to = gtk_text_iter_get_offset(&ito);
1225 }
1226 }
1227 else // not multi-line
1228 {
1229 if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1230 &from, &to) )
1231 {
1232 haveSelection = TRUE;
1233 }
1234 }
1235 #else // not GTK2
1236 if ( (GTK_EDITABLE(m_text)->has_selection) )
1237 {
1238 haveSelection = TRUE;
1239 from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1240 to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1241 }
1242 #endif
1243
1244 if (! haveSelection )
1245 from = to = GetInsertionPoint();
1246
1247 if ( from > to )
1248 {
1249 // exchange them to be compatible with wxMSW
1250 gint tmp = from;
1251 from = to;
1252 to = tmp;
1253 }
1254
1255 if ( fromOut )
1256 *fromOut = from;
1257 if ( toOut )
1258 *toOut = to;
1259 }
1260
1261
1262 bool wxTextCtrl::IsEditable() const
1263 {
1264 wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1265
1266 #ifdef __WXGTK20__
1267 if (m_windowStyle & wxTE_MULTILINE)
1268 {
1269 return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1270 }
1271 else
1272 {
1273 return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1274 }
1275 #else
1276 return GTK_EDITABLE(m_text)->editable;
1277 #endif
1278 }
1279
1280 bool wxTextCtrl::IsModified() const
1281 {
1282 return m_modified;
1283 }
1284
1285 void wxTextCtrl::Clear()
1286 {
1287 SetValue( wxT("") );
1288 }
1289
1290 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1291 {
1292 wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1293
1294 if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1295 {
1296 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1297 event.SetEventObject(this);
1298 event.SetString(GetValue());
1299 if (GetEventHandler()->ProcessEvent(event)) return;
1300 }
1301
1302 if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1303 {
1304 // This will invoke the dialog default action, such
1305 // as the clicking the default button.
1306
1307 wxWindow *top_frame = m_parent;
1308 while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1309 top_frame = top_frame->GetParent();
1310
1311 if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1312 {
1313 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1314
1315 if (window->default_widget)
1316 {
1317 gtk_widget_activate (window->default_widget);
1318 return;
1319 }
1320 }
1321 }
1322
1323 key_event.Skip();
1324 }
1325
1326 GtkWidget* wxTextCtrl::GetConnectWidget()
1327 {
1328 return GTK_WIDGET(m_text);
1329 }
1330
1331 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1332 {
1333 if (m_windowStyle & wxTE_MULTILINE)
1334 {
1335 #ifdef __WXGTK20__
1336 return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT ); // pure guesswork
1337 #else
1338 return (window == GTK_TEXT(m_text)->text_area);
1339 #endif
1340 }
1341 else
1342 {
1343 return (window == GTK_ENTRY(m_text)->text_area);
1344 }
1345 }
1346
1347 // the font will change for subsequent text insertiongs
1348 bool wxTextCtrl::SetFont( const wxFont &font )
1349 {
1350 wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1351
1352 if ( !wxTextCtrlBase::SetFont(font) )
1353 {
1354 // font didn't change, nothing to do
1355 return FALSE;
1356 }
1357
1358 if ( m_windowStyle & wxTE_MULTILINE )
1359 {
1360 m_updateFont = TRUE;
1361
1362 m_defaultStyle.SetFont(font);
1363
1364 ChangeFontGlobally();
1365 }
1366
1367 return TRUE;
1368 }
1369
1370 void wxTextCtrl::ChangeFontGlobally()
1371 {
1372 // this method is very inefficient and hence should be called as rarely as
1373 // possible!
1374 wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1375 _T("shouldn't be called for single line controls") );
1376
1377 wxString value = GetValue();
1378 if ( !value.IsEmpty() )
1379 {
1380 m_updateFont = FALSE;
1381
1382 Clear();
1383 AppendText(value);
1384 }
1385 }
1386
1387 void wxTextCtrl::UpdateFontIfNeeded()
1388 {
1389 if ( m_updateFont )
1390 ChangeFontGlobally();
1391 }
1392
1393 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1394 {
1395 if ( !wxControl::SetForegroundColour(colour) )
1396 return FALSE;
1397
1398 // update default fg colour too
1399 m_defaultStyle.SetTextColour(colour);
1400
1401 return TRUE;
1402 }
1403
1404 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1405 {
1406 wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1407
1408 if ( !wxControl::SetBackgroundColour( colour ) )
1409 return FALSE;
1410
1411 if (!m_widget->window)
1412 return FALSE;
1413
1414 wxColour sysbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
1415 if (sysbg.Red() == colour.Red() &&
1416 sysbg.Green() == colour.Green() &&
1417 sysbg.Blue() == colour.Blue())
1418 {
1419 return FALSE; // FIXME or TRUE?
1420 }
1421
1422 if (!m_backgroundColour.Ok())
1423 return FALSE;
1424
1425 if (m_windowStyle & wxTE_MULTILINE)
1426 {
1427 #ifndef __WXGTK20__
1428 GdkWindow *window = GTK_TEXT(m_text)->text_area;
1429 if (!window)
1430 return FALSE;
1431 m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1432 gdk_window_set_background( window, m_backgroundColour.GetColor() );
1433 gdk_window_clear( window );
1434 #endif
1435 }
1436
1437 // change active background color too
1438 m_defaultStyle.SetBackgroundColour( colour );
1439
1440 return TRUE;
1441 }
1442
1443 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1444 {
1445 if ( m_windowStyle & wxTE_MULTILINE )
1446 {
1447 if ( style.IsDefault() )
1448 {
1449 // nothing to do
1450 return TRUE;
1451 }
1452 #ifdef __WXGTK20__
1453 GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1454 gint l = gtk_text_buffer_get_char_count( text_buffer );
1455
1456 wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1457 _T("invalid range in wxTextCtrl::SetStyle") );
1458
1459 GtkTextIter starti, endi;
1460 gtk_text_buffer_get_iter_at_offset( text_buffer, &starti, start );
1461 gtk_text_buffer_get_iter_at_offset( text_buffer, &endi, end );
1462
1463 // use the attributes from style which are set in it and fall back
1464 // first to the default style and then to the text control default
1465 // colours for the others
1466 wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1467
1468 PangoFontDescription *font_description = attr.HasFont()
1469 ? attr.GetFont().GetNativeFontInfo()->description
1470 : NULL;
1471
1472 GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
1473 : NULL;
1474
1475 GdkColor *colBg = attr.HasBackgroundColour()
1476 ? attr.GetBackgroundColour().GetColor()
1477 : NULL;
1478
1479 GtkTextTag *tag;
1480 tag = gtk_text_buffer_create_tag( text_buffer, NULL, "font-desc", font_description,
1481 "foreground-gdk", colFg,
1482 "background-gdk", colBg, NULL );
1483 gtk_text_buffer_apply_tag( text_buffer, tag, &starti, &endi );
1484
1485 return TRUE;
1486 #else
1487 // VERY dirty way to do that - removes the required text and re-adds it
1488 // with styling (FIXME)
1489
1490 gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1491
1492 wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1493 _T("invalid range in wxTextCtrl::SetStyle") );
1494
1495 gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1496 char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1497 wxString tmp(text,*wxConvCurrent);
1498 g_free( text );
1499
1500 gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1501 gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1502
1503 #if wxUSE_UNICODE
1504 wxWX2MBbuf buf = tmp.mbc_str();
1505 const char *txt = buf;
1506 size_t txtlen = strlen(buf);
1507 #else
1508 const char *txt = tmp;
1509 size_t txtlen = tmp.length();
1510 #endif
1511
1512 // use the attributes from style which are set in it and fall back
1513 // first to the default style and then to the text control default
1514 // colours for the others
1515 wxGtkTextInsert(m_text,
1516 wxTextAttr::Combine(style, m_defaultStyle, this),
1517 txt,
1518 txtlen);
1519
1520 /* does not seem to help under GTK+ 1.2 !!!
1521 gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1522 SetInsertionPoint( old_pos );
1523 #endif
1524 return TRUE;
1525 }
1526 else // singe line
1527 {
1528 // cannot do this for GTK+'s Entry widget
1529 return FALSE;
1530 }
1531 }
1532
1533 void wxTextCtrl::ApplyWidgetStyle()
1534 {
1535 if (m_windowStyle & wxTE_MULTILINE)
1536 {
1537 // how ?
1538 }
1539 else
1540 {
1541 SetWidgetStyle();
1542 gtk_widget_set_style( m_text, m_widgetStyle );
1543 }
1544 }
1545
1546 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1547 {
1548 Cut();
1549 }
1550
1551 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1552 {
1553 Copy();
1554 }
1555
1556 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1557 {
1558 Paste();
1559 }
1560
1561 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1562 {
1563 Undo();
1564 }
1565
1566 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1567 {
1568 Redo();
1569 }
1570
1571 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1572 {
1573 event.Enable( CanCut() );
1574 }
1575
1576 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1577 {
1578 event.Enable( CanCopy() );
1579 }
1580
1581 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1582 {
1583 event.Enable( CanPaste() );
1584 }
1585
1586 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1587 {
1588 event.Enable( CanUndo() );
1589 }
1590
1591 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1592 {
1593 event.Enable( CanRedo() );
1594 }
1595
1596 void wxTextCtrl::OnInternalIdle()
1597 {
1598 wxCursor cursor = m_cursor;
1599 if (g_globalCursor.Ok()) cursor = g_globalCursor;
1600
1601 if (cursor.Ok())
1602 {
1603 #ifndef __WXGTK20__
1604 GdkWindow *window = (GdkWindow*) NULL;
1605 if (HasFlag(wxTE_MULTILINE))
1606 window = GTK_TEXT(m_text)->text_area;
1607 else
1608 window = GTK_ENTRY(m_text)->text_area;
1609
1610 if (window)
1611 gdk_window_set_cursor( window, cursor.GetCursor() );
1612
1613 if (!g_globalCursor.Ok())
1614 cursor = *wxSTANDARD_CURSOR;
1615
1616 window = m_widget->window;
1617 if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1618 gdk_window_set_cursor( window, cursor.GetCursor() );
1619 #endif
1620 }
1621
1622 if (g_delayedFocus == this)
1623 {
1624 if (GTK_WIDGET_REALIZED(m_widget))
1625 {
1626 gtk_widget_grab_focus( m_widget );
1627 g_delayedFocus = NULL;
1628 }
1629 }
1630
1631 if (wxUpdateUIEvent::CanUpdate(this))
1632 UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1633 }
1634
1635 wxSize wxTextCtrl::DoGetBestSize() const
1636 {
1637 // FIXME should be different for multi-line controls...
1638 wxSize ret( wxControl::DoGetBestSize() );
1639 return wxSize(80, ret.y);
1640 }
1641
1642 // ----------------------------------------------------------------------------
1643 // freeze/thaw
1644 // ----------------------------------------------------------------------------
1645
1646 void wxTextCtrl::Freeze()
1647 {
1648 #ifndef __WXGTK20__
1649 if ( HasFlag(wxTE_MULTILINE) )
1650 {
1651 gtk_text_freeze(GTK_TEXT(m_text));
1652 }
1653 #endif
1654 }
1655
1656 void wxTextCtrl::Thaw()
1657 {
1658 #ifndef __WXGTK20__
1659 if ( HasFlag(wxTE_MULTILINE) )
1660 {
1661 GTK_TEXT(m_text)->vadj->value = 0.0;
1662
1663 gtk_text_thaw(GTK_TEXT(m_text));
1664 }
1665 #endif
1666 }
1667
1668 // ----------------------------------------------------------------------------
1669 // scrolling
1670 // ----------------------------------------------------------------------------
1671
1672 GtkAdjustment *wxTextCtrl::GetVAdj() const
1673 {
1674 #ifdef __WXGTK20__
1675 return NULL;
1676 #else
1677 return HasFlag(wxTE_MULTILINE) ? GTK_TEXT(m_text)->vadj : NULL;
1678 #endif
1679 }
1680
1681 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1682 {
1683 #ifndef __WXGTK20__
1684 float value = adj->value + diff;
1685
1686 if ( value < 0 )
1687 value = 0;
1688
1689 float upper = adj->upper - adj->page_size;
1690 if ( value > upper )
1691 value = upper;
1692
1693 // did we noticeably change the scroll position?
1694 if ( fabs(adj->value - value) < 0.2 )
1695 {
1696 // well, this is what Robert does in wxScrollBar, so it must be good...
1697 return FALSE;
1698 }
1699
1700 adj->value = value;
1701
1702 gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1703
1704 #endif
1705 return TRUE;
1706 }
1707
1708 bool wxTextCtrl::ScrollLines(int lines)
1709 {
1710 #ifdef __WXGTK20__
1711 return FALSE;
1712 #else
1713 GtkAdjustment *adj = GetVAdj();
1714 if ( !adj )
1715 return FALSE;
1716
1717 // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1718 static const int KEY_SCROLL_PIXELS = 10;
1719
1720 return DoScroll(adj, lines*KEY_SCROLL_PIXELS);
1721 #endif
1722 }
1723
1724 bool wxTextCtrl::ScrollPages(int pages)
1725 {
1726 #ifdef __WXGTK20__
1727 return FALSE;
1728 #else
1729 GtkAdjustment *adj = GetVAdj();
1730 if ( !adj )
1731 return FALSE;
1732
1733 return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1734 #endif
1735 }
1736
wxWidgets (Impactor)