src/gtk1/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 wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  55                                        const wxTextAttr& attr,
  56                                        GtkTextIter *start,
  57                                        GtkTextIter *end)
  58 {
  59     static gchar buf[1024];
  60     GtkTextTag *tag;
  61
  62     if (attr.HasFont())
  63     {
  64         char *font_string;
  65         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  66         font_string = pango_font_description_to_string(font_description);
  67         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string);
  68         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  69                                          buf );
  70         if (!tag)
  71             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  72                                               "font-desc", font_description,
  73                                               NULL );
  74         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  75         g_free (font_string);
  76     }
  77
  78     if (attr.HasTextColour())
  79     {
  80         GdkColor *colFg = attr.GetTextColour().GetColor();
  81         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
  82                    colFg->red, colFg->green, colFg->blue);
  83         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  84                                          buf );
  85         if (!tag)
  86             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  87                                               "foreground-gdk", colFg, NULL );
  88         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  89     }
  90
  91     if (attr.HasBackgroundColour())
  92     {
  93         GdkColor *colBg = attr.GetBackgroundColour().GetColor();
  94         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
  95                    colBg->red, colBg->green, colBg->blue);
  96         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  97                                          buf );
  98         if (!tag)
  99             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 100                                               "background-gdk", colBg, NULL );
 101         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 102     }
 103 }
 104
 105 static void wxGtkTextInsert(GtkWidget *text,
 106                             GtkTextBuffer *text_buffer,
 107                             const wxTextAttr& attr,
 108                             wxCharBuffer buffer)
 109
 110 {
 111     gint start_offset;
 112     GtkTextIter iter, start;
 113
 114     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 115                                      gtk_text_buffer_get_insert (text_buffer) );
 116     start_offset = gtk_text_iter_get_offset (&iter);
 117     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 118
 119     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 120
 121     wxGtkTextApplyTagsFromAttr(text_buffer, attr, &start, &iter);
 122 }
 123 #else
 124 static void wxGtkTextInsert(GtkWidget *text,
 125                             const wxTextAttr& attr,
 126                             const char *txt,
 127                             size_t len)
 128 {
 129     GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
 130                                    : NULL;
 131
 132     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
 133                                            : NULL;
 134
 135     GdkColor *colBg = attr.HasBackgroundColour()
 136                         ? attr.GetBackgroundColour().GetColor()
 137                         : NULL;
 138
 139     gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
 140 }
 141 #endif // GTK 1.x
 142
 143 // ----------------------------------------------------------------------------
 144 // "insert_text" for GtkEntry
 145 // ----------------------------------------------------------------------------
 146
 147 static void
 148 gtk_insert_text_callback(GtkEditable *editable,
 149                          const gchar *new_text,
 150                          gint new_text_length,
 151                          gint *position,
 152                          wxTextCtrl *win)
 153 {
 154     if (g_isIdle)
 155         wxapp_install_idle_handler();
 156
 157     // we should only be called if we have a max len limit at all
 158     GtkEntry *entry = GTK_ENTRY (editable);
 159
 160     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 161
 162     // check that we don't overflow the max length limit
 163     //
 164     // FIXME: this doesn't work when we paste a string which is going to be
 165     //        truncated
 166     if ( entry->text_length == entry->text_max_length )
 167     {
 168         // we don't need to run the base class version at all
 169         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
 170
 171         // remember that the next changed signal is to be ignored to avoid
 172         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 173         win->IgnoreNextTextUpdate();
 174
 175         // and generate the correct one ourselves
 176         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 177         event.SetEventObject(win);
 178         event.SetString(win->GetValue());
 179         win->GetEventHandler()->ProcessEvent( event );
 180     }
 181 }
 182
 183 //-----------------------------------------------------------------------------
 184 //  "changed"
 185 //-----------------------------------------------------------------------------
 186
 187 static void
 188 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 189 {
 190     if ( win->IgnoreTextUpdate() )
 191         return;
 192
 193     if (!win->m_hasVMT) return;
 194
 195     if (g_isIdle)
 196         wxapp_install_idle_handler();
 197
 198     win->SetModified();
 199 #ifndef __WXGTK20__
 200     win->UpdateFontIfNeeded();
 201 #endif // !__WXGTK20__
 202
 203     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 204     event.SetEventObject( win );
 205     event.SetString( win->GetValue() );
 206     win->GetEventHandler()->ProcessEvent( event );
 207 }
 208
 209 //-----------------------------------------------------------------------------
 210 // "expose_event" from scrolled window and textview
 211 //-----------------------------------------------------------------------------
 212
 213 #ifdef __WXGTK20__
 214 static gboolean
 215 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 216 {
 217     return TRUE;
 218 }
 219 #endif
 220
 221 //-----------------------------------------------------------------------------
 222 // "changed" from vertical scrollbar
 223 //-----------------------------------------------------------------------------
 224
 225 #ifndef __WXGTK20__
 226 static void
 227 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 228 {
 229     if (!win->m_hasVMT) return;
 230
 231     if (g_isIdle)
 232         wxapp_install_idle_handler();
 233
 234     win->CalculateScrollbar();
 235 }
 236 #endif
 237
 238 // ----------------------------------------------------------------------------
 239 // redraw callback for multiline text
 240 // ----------------------------------------------------------------------------
 241
 242 #ifndef __WXGTK20__
 243
 244 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 245 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 246 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 247 // don't do anything if we're inside wxYield()
 248
 249 extern bool wxIsInsideYield;
 250
 251 extern "C" {
 252     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 253 }
 254
 255 static GtkDrawCallback gs_gtk_text_draw = NULL;
 256
 257 extern "C"
 258 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 259 {
 260     if ( !wxIsInsideYield )
 261     {
 262         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 263                      _T("infinite recursion in wxgtk_text_draw aborted") );
 264
 265         gs_gtk_text_draw(widget, rect);
 266     }
 267 }
 268
 269 #endif // __WXGTK20__
 270
 271 //-----------------------------------------------------------------------------
 272 //  wxTextCtrl
 273 //-----------------------------------------------------------------------------
 274
 275 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 276
 277 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 278     EVT_CHAR(wxTextCtrl::OnChar)
 279
 280     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 281     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 282     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 283     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 284     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 285
 286     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 287     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 288     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 289     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 290     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 291 END_EVENT_TABLE()
 292
 293 void wxTextCtrl::Init()
 294 {
 295     m_ignoreNextUpdate =
 296     m_modified = FALSE;
 297     SetUpdateFont(FALSE);
 298     m_text =
 299     m_vScrollbar = (GtkWidget *)NULL;
 300 #ifdef __WXGTK20__
 301     m_frozenness = 0;
 302 #endif
 303 }
 304
 305 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 306                         wxWindowID id,
 307                         const wxString &value,
 308                         const wxPoint &pos,
 309                         const wxSize &size,
 310                         long style,
 311                         const wxValidator& validator,
 312                         const wxString &name )
 313 {
 314     Init();
 315
 316     Create( parent, id, value, pos, size, style, validator, name );
 317 }
 318
 319 bool wxTextCtrl::Create( wxWindow *parent,
 320                          wxWindowID id,
 321                          const wxString &value,
 322                          const wxPoint &pos,
 323                          const wxSize &size,
 324                          long style,
 325                          const wxValidator& validator,
 326                          const wxString &name )
 327 {
 328     m_needParent = TRUE;
 329     m_acceptsFocus = TRUE;
 330
 331     if (!PreCreation( parent, pos, size ) ||
 332         !CreateBase( parent, id, pos, size, style, validator, name ))
 333     {
 334         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 335         return FALSE;
 336     }
 337
 338
 339     m_vScrollbarVisible = FALSE;
 340
 341     bool multi_line = (style & wxTE_MULTILINE) != 0;
 342
 343     if (multi_line)
 344     {
 345 #ifdef __WXGTK20__
 346         // Create view
 347         m_text = gtk_text_view_new();
 348
 349         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 350
 351         // create scrolled window
 352         m_widget = gtk_scrolled_window_new( NULL, NULL );
 353         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 354                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 355
 356         // Insert view into scrolled window
 357         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 358
 359         // Global settings which can be overridden by tags, I guess.
 360         if (HasFlag( wxHSCROLL ) || HasFlag( wxTE_DONTWRAP ))
 361             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 362         else
 363             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 364
 365         if (!HasFlag(wxNO_BORDER))
 366             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 367
 368         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 369 #else
 370         // create our control ...
 371         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 372
 373         // ... and put into the upper left hand corner of the table
 374         bool bHasHScrollbar = FALSE;
 375         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 376         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 377         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 378                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 379                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 380                        0, 0);
 381
 382         // always wrap words
 383         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 384
 385         // finally, put the vertical scrollbar in the upper right corner
 386         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 387         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 388         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 389                      GTK_FILL,
 390                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 391                      0, 0);
 392 #endif
 393     }
 394     else
 395     {
 396         // a single-line text control: no need for scrollbars
 397         m_widget =
 398         m_text = gtk_entry_new();
 399     }
 400
 401     m_parent->DoAddChild( this );
 402
 403     m_focusWidget = m_text;
 404
 405     PostCreation(size);
 406
 407     if (multi_line)
 408         gtk_widget_show(m_text);
 409
 410 #ifndef __WXGTK20__
 411     if (multi_line)
 412     {
 413         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 414           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 415
 416         // only initialize gs_gtk_text_draw once, starting from the next the
 417         // klass::draw will already be wxgtk_text_draw
 418         if ( !gs_gtk_text_draw )
 419         {
 420             GtkDrawCallback&
 421                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 422
 423             gs_gtk_text_draw = draw;
 424
 425             draw = wxgtk_text_draw;
 426         }
 427     }
 428 #endif // GTK+ 1.x
 429
 430     if (!value.IsEmpty())
 431     {
 432 #ifdef __WXGTK20__
 433         SetValue( value );
 434 #else
 435
 436 #if !GTK_CHECK_VERSION(1, 2, 0)
 437         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 438         // gtk_editable_insert_text()
 439         gtk_widget_realize(m_text);
 440 #endif // GTK 1.0
 441
 442         gint tmp = 0;
 443 #if wxUSE_UNICODE
 444         wxWX2MBbuf val = value.mbc_str();
 445         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 446 #else
 447         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 448 #endif
 449
 450         if (multi_line)
 451         {
 452             // Bring editable's cursor uptodate. Bug in GTK.
 453             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 454         }
 455
 456 #endif
 457     }
 458
 459     if (style & wxTE_PASSWORD)
 460     {
 461         if (!multi_line)
 462             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 463     }
 464
 465     if (style & wxTE_READONLY)
 466     {
 467         if (!multi_line)
 468             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 469 #ifdef __WXGTK20__
 470         else
 471             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 472 #else
 473     }
 474     else
 475     {
 476         if (multi_line)
 477             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 478 #endif
 479     }
 480
 481 #ifdef __WXGTK20__
 482     if (multi_line)
 483     {
 484         if (style & wxTE_RIGHT)
 485             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 486         else if (style & wxTE_CENTRE)
 487             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 488         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 489     }
 490     // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 491 #if GTK_CHECK_VERSION(2, 3, 5)
 492     else
 493     {
 494         if (style & wxTE_RIGHT)
 495             gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 496         else if (style & wxTE_CENTRE)
 497             gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 498     }
 499 #endif // gtk+-2.3.5
 500 #endif // __WXGTK20__
 501
 502     // We want to be notified about text changes.
 503 #ifdef __WXGTK20__
 504     if (multi_line)
 505     {
 506         g_signal_connect( G_OBJECT(m_buffer), "changed",
 507             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 508     }
 509     else
 510 #endif
 511
 512     {
 513         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 514             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 515     }
 516
 517     m_cursor = wxCursor( wxCURSOR_IBEAM );
 518
 519     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 520     SetDefaultStyle( attrDef );
 521
 522     return TRUE;
 523 }
 524
 525
 526 void wxTextCtrl::CalculateScrollbar()
 527 {
 528 #ifndef __WXGTK20__
 529     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 530
 531     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 532
 533     if (adj->upper - adj->page_size < 0.8)
 534     {
 535         if (m_vScrollbarVisible)
 536         {
 537             gtk_widget_hide( m_vScrollbar );
 538             m_vScrollbarVisible = FALSE;
 539         }
 540     }
 541     else
 542     {
 543         if (!m_vScrollbarVisible)
 544         {
 545             gtk_widget_show( m_vScrollbar );
 546             m_vScrollbarVisible = TRUE;
 547         }
 548     }
 549 #endif
 550 }
 551
 552 wxString wxTextCtrl::GetValue() const
 553 {
 554     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 555
 556     wxString tmp;
 557     if (m_windowStyle & wxTE_MULTILINE)
 558     {
 559 #ifdef __WXGTK20__
 560         GtkTextIter start;
 561         gtk_text_buffer_get_start_iter( m_buffer, &start );
 562         GtkTextIter end;
 563         gtk_text_buffer_get_end_iter( m_buffer, &end );
 564         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 565
 566 #if wxUSE_UNICODE
 567         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 568 #else
 569         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 570 #endif
 571         if ( buffer )
 572             tmp = buffer;
 573
 574         g_free( text );
 575 #else
 576         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 577         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 578         tmp = text;
 579         g_free( text );
 580 #endif
 581     }
 582     else
 583     {
 584         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 585     }
 586
 587     return tmp;
 588 }
 589
 590 void wxTextCtrl::SetValue( const wxString &value )
 591 {
 592     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 593
 594     if (m_windowStyle & wxTE_MULTILINE)
 595     {
 596 #ifdef __WXGTK20__
 597
 598 #if wxUSE_UNICODE
 599         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 600 #else
 601         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 602 #endif
 603         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 604             IgnoreNextTextUpdate();
 605
 606         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 607
 608 #else
 609         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 610         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 611         len = 0;
 612         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 613 #endif
 614     }
 615     else
 616     {
 617         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 618     }
 619
 620     // GRG, Jun/2000: Changed this after a lot of discussion in
 621     //   the lists. wxWidgets 2.2 will have a set of flags to
 622     //   customize this behaviour.
 623     SetInsertionPoint(0);
 624
 625     m_modified = FALSE;
 626 }
 627
 628 void wxTextCtrl::WriteText( const wxString &text )
 629 {
 630     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 631
 632     if ( text.empty() )
 633         return;
 634
 635     // gtk_text_changed_callback() will set m_modified to true but m_modified
 636     // shouldn't be changed by the program writing to the text control itself,
 637     // so save the old value and restore when we're done
 638     bool oldModified = m_modified;
 639
 640     if ( m_windowStyle & wxTE_MULTILINE )
 641     {
 642 #ifdef __WXGTK20__
 643
 644 #if wxUSE_UNICODE
 645         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 646 #else
 647         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 648 #endif
 649         if ( !buffer )
 650         {
 651             // what else can we do? at least don't crash...
 652             return;
 653         }
 654
 655         // TODO: Call whatever is needed to delete the selection.
 656         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 657
 658         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 659         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 660         if ( adj->value == adj->upper - adj->page_size )
 661         {
 662             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 663                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 664         }
 665 #else // GTK 1.x
 666         // After cursor movements, gtk_text_get_point() is wrong by one.
 667         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 668
 669         // always use m_defaultStyle, even if it is empty as otherwise
 670         // resetting the style and appending some more text wouldn't work: if
 671         // we don't specify the style explicitly, the old style would be used
 672         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 673         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 674
 675         // we called wxGtkTextInsert with correct font, no need to do anything
 676         // in UpdateFontIfNeeded() any longer
 677         if ( !text.empty() )
 678         {
 679             SetUpdateFont(FALSE);
 680         }
 681
 682         // Bring editable's cursor back uptodate.
 683         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 684 #endif // GTK 1.x/2.0
 685     }
 686     else // single line
 687     {
 688         // First remove the selection if there is one
 689         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 690
 691         // This moves the cursor pos to behind the inserted text.
 692         gint len = GET_EDITABLE_POS(m_text);
 693
 694 #ifdef __WXGTK20__
 695
 696 #if wxUSE_UNICODE
 697         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 698 #else
 699         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 700 #endif
 701         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 702
 703 #else
 704         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 705 #endif
 706
 707         // Bring entry's cursor uptodate.
 708         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 709     }
 710
 711     m_modified = oldModified;
 712 }
 713
 714 void wxTextCtrl::AppendText( const wxString &text )
 715 {
 716     SetInsertionPointEnd();
 717     WriteText( text );
 718 }
 719
 720 wxString wxTextCtrl::GetLineText( long lineNo ) const
 721 {
 722     if (m_windowStyle & wxTE_MULTILINE)
 723     {
 724 #ifndef __WXGTK20__
 725         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 726         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 727
 728         if (text)
 729         {
 730             wxString buf(wxT(""));
 731             long i;
 732             int currentLine = 0;
 733             for (i = 0; currentLine != lineNo && text[i]; i++ )
 734                 if (text[i] == '\n')
 735             currentLine++;
 736             // Now get the text
 737             int j;
 738             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 739                 buf += text[i];
 740
 741             g_free( text );
 742             return buf;
 743         }
 744         else
 745         {
 746             return wxEmptyString;
 747         }
 748 #else
 749         GtkTextIter line;
 750         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 751         GtkTextIter end;
 752         gtk_text_buffer_get_end_iter(m_buffer,&end );
 753         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
 754         wxString result(wxGTK_CONV_BACK(text));
 755         g_free(text);
 756         return result.BeforeFirst(wxT('\n'));
 757 #endif
 758     }
 759     else
 760     {
 761         if (lineNo == 0) return GetValue();
 762         return wxEmptyString;
 763     }
 764 }
 765
 766 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 767 {
 768   /* If you implement this, don't forget to update the documentation!
 769    * (file docs/latex/wx/text.tex) */
 770     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 771 }
 772
 773 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 774 {
 775     if ( m_windowStyle & wxTE_MULTILINE )
 776     {
 777         wxString text = GetValue();
 778
 779         // cast to prevent warning. But pos really should've been unsigned.
 780         if( (unsigned long)pos > text.Len()  )
 781             return FALSE;
 782
 783         *x=0;   // First Col
 784         *y=0;   // First Line
 785
 786         const wxChar* stop = text.c_str() + pos;
 787         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 788         {
 789             if (*p == wxT('\n'))
 790             {
 791                 (*y)++;
 792                 *x=0;
 793             }
 794             else
 795                 (*x)++;
 796         }
 797     }
 798     else // single line control
 799     {
 800         if ( pos <= GTK_ENTRY(m_text)->text_length )
 801         {
 802             *y = 0;
 803             *x = pos;
 804         }
 805         else
 806         {
 807             // index out of bounds
 808             return FALSE;
 809         }
 810     }
 811
 812     return TRUE;
 813 }
 814
 815 long wxTextCtrl::XYToPosition(long x, long y ) const
 816 {
 817     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 818
 819     long pos=0;
 820     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 821
 822     pos += x;
 823     return pos;
 824 }
 825
 826 int wxTextCtrl::GetLineLength(long lineNo) const
 827 {
 828     wxString str = GetLineText (lineNo);
 829     return (int) str.Length();
 830 }
 831
 832 int wxTextCtrl::GetNumberOfLines() const
 833 {
 834     if (m_windowStyle & wxTE_MULTILINE)
 835     {
 836 #ifdef __WXGTK20__
 837         return gtk_text_buffer_get_line_count( m_buffer );
 838 #else
 839         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 840         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 841
 842         if (text)
 843         {
 844             int currentLine = 0;
 845             for (int i = 0; i < len; i++ )
 846             {
 847                 if (text[i] == '\n')
 848                     currentLine++;
 849             }
 850             g_free( text );
 851
 852             // currentLine is 0 based, add 1 to get number of lines
 853             return currentLine + 1;
 854         }
 855         else
 856         {
 857             return 0;
 858         }
 859 #endif
 860     }
 861     else
 862     {
 863         return 1;
 864     }
 865 }
 866
 867 void wxTextCtrl::SetInsertionPoint( long pos )
 868 {
 869     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 870
 871     if ( IsMultiLine() )
 872     {
 873 #ifdef __WXGTK20__
 874         GtkTextIter iter;
 875         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
 876         gtk_text_buffer_place_cursor( m_buffer, &iter );
 877         gtk_text_view_scroll_mark_onscreen
 878         (
 879             GTK_TEXT_VIEW(m_text),
 880             gtk_text_buffer_get_insert( m_buffer )
 881         );
 882 #else // GTK+ 1.x
 883         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 884           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 885
 886         /* we fake a set_point by inserting and deleting. as the user
 887            isn't supposed to get to know about this non-sense, we
 888            disconnect so that no events are sent to the user program. */
 889
 890         gint tmp = (gint)pos;
 891         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 892         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 893
 894         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 895           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 896
 897         // bring editable's cursor uptodate. Bug in GTK.
 898         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 899 #endif // GTK+ 2/1
 900     }
 901     else
 902     {
 903         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 904
 905         // Bring editable's cursor uptodate. Bug in GTK.
 906         SET_EDITABLE_POS(m_text, (guint32)pos);
 907     }
 908 }
 909
 910 void wxTextCtrl::SetInsertionPointEnd()
 911 {
 912     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 913
 914     if (m_windowStyle & wxTE_MULTILINE)
 915     {
 916 #ifdef __WXGTK20__
 917         GtkTextIter end;
 918         gtk_text_buffer_get_end_iter( m_buffer, &end );
 919         gtk_text_buffer_place_cursor( m_buffer, &end );
 920 #else
 921         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 922 #endif
 923     }
 924     else
 925     {
 926         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 927     }
 928 }
 929
 930 void wxTextCtrl::SetEditable( bool editable )
 931 {
 932     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 933
 934     if (m_windowStyle & wxTE_MULTILINE)
 935     {
 936 #ifdef __WXGTK20__
 937         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 938 #else
 939         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 940 #endif
 941     }
 942     else
 943     {
 944         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 945     }
 946 }
 947
 948 bool wxTextCtrl::Enable( bool enable )
 949 {
 950     if (!wxWindowBase::Enable(enable))
 951     {
 952         // nothing to do
 953         return FALSE;
 954     }
 955
 956     if (m_windowStyle & wxTE_MULTILINE)
 957     {
 958 #ifdef __WXGTK20__
 959         SetEditable( enable );
 960 #else
 961         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 962         OnParentEnable(enable);
 963 #endif
 964     }
 965     else
 966     {
 967         gtk_widget_set_sensitive( m_text, enable );
 968     }
 969
 970     return TRUE;
 971 }
 972
 973 // wxGTK-specific: called recursively by Enable,
 974 // to give widgets an oppprtunity to correct their colours after they
 975 // have been changed by Enable
 976 void wxTextCtrl::OnParentEnable( bool enable )
 977 {
 978     // If we have a custom background colour, we use this colour in both
 979     // disabled and enabled mode, or we end up with a different colour under the
 980     // text.
 981     wxColour oldColour = GetBackgroundColour();
 982     if (oldColour.Ok())
 983     {
 984         // Need to set twice or it'll optimize the useful stuff out
 985         if (oldColour == * wxWHITE)
 986             SetBackgroundColour(*wxBLACK);
 987         else
 988             SetBackgroundColour(*wxWHITE);
 989         SetBackgroundColour(oldColour);
 990     }
 991 }
 992
 993 void wxTextCtrl::MarkDirty()
 994 {
 995     m_modified = TRUE;
 996 }
 997
 998 void wxTextCtrl::DiscardEdits()
 999 {
1000     m_modified = FALSE;
1001 }
1002
1003 // ----------------------------------------------------------------------------
1004 // max text length support
1005 // ----------------------------------------------------------------------------
1006
1007 void wxTextCtrl::IgnoreNextTextUpdate()
1008 {
1009     m_ignoreNextUpdate = TRUE;
1010 }
1011
1012 bool wxTextCtrl::IgnoreTextUpdate()
1013 {
1014     if ( m_ignoreNextUpdate )
1015     {
1016         m_ignoreNextUpdate = FALSE;
1017
1018         return TRUE;
1019     }
1020
1021     return FALSE;
1022 }
1023
1024 void wxTextCtrl::SetMaxLength(unsigned long len)
1025 {
1026     if ( !HasFlag(wxTE_MULTILINE) )
1027     {
1028         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1029
1030         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1031         // we had tried to enter more text than allowed by max text length and
1032         // the text wasn't really changed
1033         //
1034         // to detect this and generate TEXT_MAXLEN event instead of
1035         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1036         //
1037         // when max len is set to 0 we disconnect our handler as it means that
1038         // we shouldn't check anything any more
1039         if ( len )
1040         {
1041             gtk_signal_connect( GTK_OBJECT(m_text),
1042                                 "insert_text",
1043                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1044                                 (gpointer)this);
1045         }
1046         else // no checking
1047         {
1048             gtk_signal_disconnect_by_func
1049             (
1050                 GTK_OBJECT(m_text),
1051                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1052                 (gpointer)this
1053             );
1054         }
1055     }
1056 }
1057
1058 void wxTextCtrl::SetSelection( long from, long to )
1059 {
1060     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1061
1062     if (from == -1 && to == -1)
1063     {
1064         from = 0;
1065         to = GetValue().Length();
1066     }
1067
1068 #ifndef __WXGTK20__
1069     if ( (m_windowStyle & wxTE_MULTILINE) &&
1070          !GTK_TEXT(m_text)->line_start_cache )
1071     {
1072         // tell the programmer that it didn't work
1073         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1074         return;
1075     }
1076 #endif
1077
1078     if (m_windowStyle & wxTE_MULTILINE)
1079     {
1080 #ifdef __WXGTK20__
1081         GtkTextIter fromi, toi;
1082         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1083         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1084
1085         gtk_text_buffer_place_cursor( m_buffer, &toi );
1086         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1087 #else
1088         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1089 #endif
1090     }
1091     else
1092     {
1093         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1094     }
1095 }
1096
1097 void wxTextCtrl::ShowPosition( long pos )
1098 {
1099     if (m_windowStyle & wxTE_MULTILINE)
1100     {
1101 #ifdef __WXGTK20__
1102         GtkTextIter iter;
1103         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1104         gtk_text_iter_set_offset( &iter, pos );
1105         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1106         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1107 #else // GTK 1.x
1108         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1109         float totalLines =  (float) GetNumberOfLines();
1110         long posX;
1111         long posY;
1112         PositionToXY(pos, &posX, &posY);
1113         float posLine = (float) posY;
1114         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1115         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1116 #endif // GTK 1.x/2.x
1117     }
1118 }
1119
1120 #ifdef __WXGTK20__
1121
1122 wxTextCtrlHitTestResult
1123 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1124 {
1125     if ( !IsMultiLine() )
1126     {
1127         // not supported
1128         return wxTE_HT_UNKNOWN;
1129     }
1130
1131     int x, y;
1132     gtk_text_view_window_to_buffer_coords
1133     (
1134         GTK_TEXT_VIEW(m_text),
1135         GTK_TEXT_WINDOW_TEXT,
1136         pt.x, pt.y,
1137         &x, &y
1138     );
1139
1140     GtkTextIter iter;
1141     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1142     if ( pos )
1143         *pos = gtk_text_iter_get_offset(&iter);
1144
1145     return wxTE_HT_ON_TEXT;
1146 }
1147
1148 #endif // __WXGTK20__
1149
1150 long wxTextCtrl::GetInsertionPoint() const
1151 {
1152     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1153
1154 #ifdef __WXGTK20__
1155     if (m_windowStyle & wxTE_MULTILINE)
1156     {
1157         // There is no direct accessor for the cursor, but
1158         // internally, the cursor is the "mark" called
1159         // "insert" in the text view's btree structure.
1160
1161         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1162         GtkTextIter cursor;
1163         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1164
1165         return gtk_text_iter_get_offset( &cursor );
1166     }
1167     else
1168 #endif
1169     {
1170     return (long) GET_EDITABLE_POS(m_text);
1171     }
1172 }
1173
1174 long wxTextCtrl::GetLastPosition() const
1175 {
1176     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1177
1178     int pos = 0;
1179
1180     if (m_windowStyle & wxTE_MULTILINE)
1181     {
1182 #ifdef __WXGTK20__
1183         GtkTextIter end;
1184         gtk_text_buffer_get_end_iter( m_buffer, &end );
1185
1186         pos = gtk_text_iter_get_offset( &end );
1187 #else
1188         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1189 #endif
1190     }
1191     else
1192     {
1193         pos = GTK_ENTRY(m_text)->text_length;
1194     }
1195
1196     return (long)pos;
1197 }
1198
1199 void wxTextCtrl::Remove( long from, long to )
1200 {
1201     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1202
1203 #ifdef __WXGTK20__
1204     if (m_windowStyle & wxTE_MULTILINE)
1205     {
1206         GtkTextIter fromi, toi;
1207         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1208         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1209
1210         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1211     }
1212     else // single line
1213 #endif
1214     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1215 }
1216
1217 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1218 {
1219     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1220
1221     Remove( from, to );
1222
1223     if (!value.IsEmpty())
1224     {
1225 #ifdef __WXGTK20__
1226         SetInsertionPoint( from );
1227         WriteText( value );
1228 #else // GTK 1.x
1229         gint pos = (gint)from;
1230 #if wxUSE_UNICODE
1231         wxWX2MBbuf buf = value.mbc_str();
1232         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1233 #else
1234         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1235 #endif // wxUSE_UNICODE
1236 #endif // GTK 1.x/2.x
1237     }
1238 }
1239
1240 void wxTextCtrl::Cut()
1241 {
1242     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1243
1244 #ifdef __WXGTK20__
1245     if (m_windowStyle & wxTE_MULTILINE)
1246         g_signal_emit_by_name(m_text, "cut-clipboard");
1247     else
1248 #endif
1249         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1250 }
1251
1252 void wxTextCtrl::Copy()
1253 {
1254     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1255
1256 #ifdef __WXGTK20__
1257     if (m_windowStyle & wxTE_MULTILINE)
1258         g_signal_emit_by_name(m_text, "copy-clipboard");
1259     else
1260 #endif
1261         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1262 }
1263
1264 void wxTextCtrl::Paste()
1265 {
1266     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1267
1268 #ifdef __WXGTK20__
1269     if (m_windowStyle & wxTE_MULTILINE)
1270         g_signal_emit_by_name(m_text, "paste-clipboard");
1271     else
1272 #endif
1273         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1274 }
1275
1276 // Undo/redo
1277 void wxTextCtrl::Undo()
1278 {
1279     // TODO
1280     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1281 }
1282
1283 void wxTextCtrl::Redo()
1284 {
1285     // TODO
1286     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1287 }
1288
1289 bool wxTextCtrl::CanUndo() const
1290 {
1291     // TODO
1292     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1293     return FALSE;
1294 }
1295
1296 bool wxTextCtrl::CanRedo() const
1297 {
1298     // TODO
1299     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1300     return FALSE;
1301 }
1302
1303 // If the return values from and to are the same, there is no
1304 // selection.
1305 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1306 {
1307     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1308
1309     gint from = -1;
1310     gint to = -1;
1311     bool haveSelection = FALSE;
1312
1313 #ifdef __WXGTK20__
1314      if (m_windowStyle & wxTE_MULTILINE)
1315      {
1316          GtkTextIter ifrom, ito;
1317          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1318          {
1319              haveSelection = TRUE;
1320              from = gtk_text_iter_get_offset(&ifrom);
1321              to = gtk_text_iter_get_offset(&ito);
1322          }
1323      }
1324      else  // not multi-line
1325      {
1326          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1327                                                  &from, &to) )
1328          {
1329              haveSelection = TRUE;
1330          }
1331      }
1332 #else //  not GTK2
1333      if ( (GTK_EDITABLE(m_text)->has_selection) )
1334      {
1335          haveSelection = TRUE;
1336          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1337          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1338      }
1339 #endif
1340
1341      if (! haveSelection )
1342           from = to = GetInsertionPoint();
1343
1344      if ( from > to )
1345      {
1346          // exchange them to be compatible with wxMSW
1347          gint tmp = from;
1348          from = to;
1349          to = tmp;
1350      }
1351
1352     if ( fromOut )
1353         *fromOut = from;
1354     if ( toOut )
1355         *toOut = to;
1356 }
1357
1358
1359 bool wxTextCtrl::IsEditable() const
1360 {
1361     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1362
1363 #ifdef __WXGTK20__
1364     if (m_windowStyle & wxTE_MULTILINE)
1365     {
1366         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1367     }
1368     else
1369     {
1370         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1371     }
1372 #else
1373     return GTK_EDITABLE(m_text)->editable;
1374 #endif
1375 }
1376
1377 bool wxTextCtrl::IsModified() const
1378 {
1379     return m_modified;
1380 }
1381
1382 void wxTextCtrl::Clear()
1383 {
1384     SetValue( wxT("") );
1385 }
1386
1387 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1388 {
1389     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1390
1391     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1392     {
1393         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1394         event.SetEventObject(this);
1395         event.SetString(GetValue());
1396         if (GetEventHandler()->ProcessEvent(event)) return;
1397     }
1398
1399     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1400     {
1401         // This will invoke the dialog default action, such
1402         // as the clicking the default button.
1403
1404         wxWindow *top_frame = m_parent;
1405         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1406             top_frame = top_frame->GetParent();
1407
1408         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1409         {
1410             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1411
1412             if (window->default_widget)
1413             {
1414                 gtk_widget_activate (window->default_widget);
1415                 return;
1416             }
1417         }
1418     }
1419
1420     key_event.Skip();
1421 }
1422
1423 GtkWidget* wxTextCtrl::GetConnectWidget()
1424 {
1425     return GTK_WIDGET(m_text);
1426 }
1427
1428 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1429 {
1430     if (m_windowStyle & wxTE_MULTILINE)
1431     {
1432 #ifdef __WXGTK20__
1433         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1434 #else
1435         return (window == GTK_TEXT(m_text)->text_area);
1436 #endif
1437     }
1438     else
1439     {
1440         return (window == GTK_ENTRY(m_text)->text_area);
1441     }
1442 }
1443
1444 // the font will change for subsequent text insertiongs
1445 bool wxTextCtrl::SetFont( const wxFont &font )
1446 {
1447     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1448
1449     if ( !wxTextCtrlBase::SetFont(font) )
1450     {
1451         // font didn't change, nothing to do
1452         return FALSE;
1453     }
1454
1455     if ( m_windowStyle & wxTE_MULTILINE )
1456     {
1457         SetUpdateFont(TRUE);
1458
1459         m_defaultStyle.SetFont(font);
1460
1461         ChangeFontGlobally();
1462     }
1463
1464     return TRUE;
1465 }
1466
1467 void wxTextCtrl::ChangeFontGlobally()
1468 {
1469     // this method is very inefficient and hence should be called as rarely as
1470     // possible!
1471     //
1472     // TODO: it can be implemented much more efficiently for GTK2
1473 #ifndef __WXGTK20__
1474     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1475
1476                   _T("shouldn't be called for single line controls") );
1477 #else
1478     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE),
1479                   _T("shouldn't be called for single line controls") );
1480 #endif
1481
1482     wxString value = GetValue();
1483     if ( !value.IsEmpty() )
1484     {
1485         SetUpdateFont(FALSE);
1486
1487         Clear();
1488         AppendText(value);
1489     }
1490 }
1491
1492 #ifndef __WXGTK20__
1493
1494 void wxTextCtrl::UpdateFontIfNeeded()
1495 {
1496     if ( m_updateFont )
1497         ChangeFontGlobally();
1498 }
1499
1500 #endif // GTK+ 1.x
1501
1502 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1503 {
1504     if ( !wxControl::SetForegroundColour(colour) )
1505         return FALSE;
1506
1507     // update default fg colour too
1508     m_defaultStyle.SetTextColour(colour);
1509
1510     return TRUE;
1511 }
1512
1513 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1514 {
1515     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1516
1517     if ( !wxControl::SetBackgroundColour( colour ) )
1518         return FALSE;
1519
1520 #ifndef __WXGTK20__
1521     if (!m_widget->window)
1522         return FALSE;
1523 #endif
1524
1525     if (!m_backgroundColour.Ok())
1526         return FALSE;
1527
1528     if (m_windowStyle & wxTE_MULTILINE)
1529     {
1530 #ifndef __WXGTK20__
1531         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1532         if (!window)
1533             return FALSE;
1534         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1535         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1536         gdk_window_clear( window );
1537 #endif
1538     }
1539
1540     // change active background color too
1541     m_defaultStyle.SetBackgroundColour( colour );
1542
1543     return TRUE;
1544 }
1545
1546 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1547 {
1548     if ( m_windowStyle & wxTE_MULTILINE )
1549     {
1550         if ( style.IsDefault() )
1551         {
1552             // nothing to do
1553             return TRUE;
1554         }
1555 #ifdef __WXGTK20__
1556         gint l = gtk_text_buffer_get_char_count( m_buffer );
1557
1558         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1559                      _T("invalid range in wxTextCtrl::SetStyle") );
1560
1561         GtkTextIter starti, endi;
1562         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1563         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1564
1565         // use the attributes from style which are set in it and fall back
1566         // first to the default style and then to the text control default
1567         // colours for the others
1568         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1569
1570         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1571
1572          return TRUE;
1573 #else
1574         // VERY dirty way to do that - removes the required text and re-adds it
1575         // with styling (FIXME)
1576
1577         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1578
1579         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1580                      _T("invalid range in wxTextCtrl::SetStyle") );
1581
1582         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1583         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1584         wxString tmp(text,*wxConvCurrent);
1585         g_free( text );
1586
1587         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1588         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1589
1590 #if wxUSE_UNICODE
1591         wxWX2MBbuf buf = tmp.mbc_str();
1592         const char *txt = buf;
1593         size_t txtlen = strlen(buf);
1594 #else
1595         const char *txt = tmp;
1596         size_t txtlen = tmp.length();
1597 #endif
1598
1599         // use the attributes from style which are set in it and fall back
1600         // first to the default style and then to the text control default
1601         // colours for the others
1602         wxGtkTextInsert(m_text,
1603                         wxTextAttr::Combine(style, m_defaultStyle, this),
1604                         txt,
1605                         txtlen);
1606
1607         /* does not seem to help under GTK+ 1.2 !!!
1608         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1609         SetInsertionPoint( old_pos );
1610 #endif
1611         return TRUE;
1612     }
1613     else // singe line
1614     {
1615         // cannot do this for GTK+'s Entry widget
1616         return FALSE;
1617     }
1618 }
1619
1620 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1621 {
1622     gtk_widget_modify_style(m_text, style);
1623 }
1624
1625 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1626 {
1627     Cut();
1628 }
1629
1630 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1631 {
1632     Copy();
1633 }
1634
1635 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1636 {
1637     Paste();
1638 }
1639
1640 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1641 {
1642     Undo();
1643 }
1644
1645 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1646 {
1647     Redo();
1648 }
1649
1650 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1651 {
1652     event.Enable( CanCut() );
1653 }
1654
1655 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1656 {
1657     event.Enable( CanCopy() );
1658 }
1659
1660 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1661 {
1662     event.Enable( CanPaste() );
1663 }
1664
1665 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1666 {
1667     event.Enable( CanUndo() );
1668 }
1669
1670 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1671 {
1672     event.Enable( CanRedo() );
1673 }
1674
1675 void wxTextCtrl::OnInternalIdle()
1676 {
1677     wxCursor cursor = m_cursor;
1678     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1679
1680     if (cursor.Ok())
1681     {
1682 #ifndef __WXGTK20__
1683         GdkWindow *window = (GdkWindow*) NULL;
1684         if (HasFlag(wxTE_MULTILINE))
1685             window = GTK_TEXT(m_text)->text_area;
1686         else
1687             window = GTK_ENTRY(m_text)->text_area;
1688
1689         if (window)
1690             gdk_window_set_cursor( window, cursor.GetCursor() );
1691
1692         if (!g_globalCursor.Ok())
1693             cursor = *wxSTANDARD_CURSOR;
1694
1695         window = m_widget->window;
1696         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1697             gdk_window_set_cursor( window, cursor.GetCursor() );
1698 #endif
1699     }
1700
1701     if (g_delayedFocus == this)
1702     {
1703         if (GTK_WIDGET_REALIZED(m_widget))
1704         {
1705             gtk_widget_grab_focus( m_widget );
1706             g_delayedFocus = NULL;
1707         }
1708     }
1709
1710     if (wxUpdateUIEvent::CanUpdate(this))
1711         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1712 }
1713
1714 wxSize wxTextCtrl::DoGetBestSize() const
1715 {
1716     // FIXME should be different for multi-line controls...
1717     wxSize ret( wxControl::DoGetBestSize() );
1718     wxSize best(80, ret.y);
1719     CacheBestSize(best);
1720     return best;
1721 }
1722
1723 // ----------------------------------------------------------------------------
1724 // freeze/thaw
1725 // ----------------------------------------------------------------------------
1726
1727 void wxTextCtrl::Freeze()
1728 {
1729     if ( HasFlag(wxTE_MULTILINE) )
1730     {
1731 #ifdef __WXGTK20__
1732         if ( !m_frozenness++ )
1733         {
1734             // freeze textview updates and remove buffer
1735             g_signal_connect( G_OBJECT(m_text), "expose_event",
1736                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1737             g_signal_connect( G_OBJECT(m_widget), "expose_event",
1738                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1739             gtk_widget_set_sensitive(m_widget, false);
1740             g_object_ref(m_buffer);
1741             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1742     }
1743 #else
1744         gtk_text_freeze(GTK_TEXT(m_text));
1745 #endif
1746     }
1747 }
1748
1749 void wxTextCtrl::Thaw()
1750 {
1751     if ( HasFlag(wxTE_MULTILINE) )
1752     {
1753 #ifdef __WXGTK20__
1754         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1755
1756         if ( !--m_frozenness )
1757         {
1758             // Reattach buffer and thaw textview updates
1759             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1760             g_object_unref(m_buffer);
1761             gtk_widget_set_sensitive(m_widget, true);
1762             g_signal_handlers_disconnect_by_func(m_widget, (gpointer)gtk_text_exposed_callback, this);
1763             g_signal_handlers_disconnect_by_func(m_text, (gpointer)gtk_text_exposed_callback, this);
1764         }
1765 #else
1766         GTK_TEXT(m_text)->vadj->value = 0.0;
1767
1768         gtk_text_thaw(GTK_TEXT(m_text));
1769 #endif
1770     }
1771 }
1772
1773 // ----------------------------------------------------------------------------
1774 // scrolling
1775 // ----------------------------------------------------------------------------
1776
1777 GtkAdjustment *wxTextCtrl::GetVAdj() const
1778 {
1779     if ( !IsMultiLine() )
1780         return NULL;
1781
1782 #ifdef __WXGTK20__
1783     return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
1784 #else
1785     return GTK_TEXT(m_text)->vadj;
1786 #endif
1787 }
1788
1789 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1790 {
1791     float value = adj->value + diff;
1792
1793     if ( value < 0 )
1794         value = 0;
1795
1796     float upper = adj->upper - adj->page_size;
1797     if ( value > upper )
1798         value = upper;
1799
1800     // did we noticeably change the scroll position?
1801     if ( fabs(adj->value - value) < 0.2 )
1802     {
1803         // well, this is what Robert does in wxScrollBar, so it must be good...
1804         return FALSE;
1805     }
1806
1807     adj->value = value;
1808
1809 #ifdef __WXGTK20__
1810     gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
1811 #else
1812     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1813 #endif
1814
1815     return TRUE;
1816 }
1817
1818 bool wxTextCtrl::ScrollLines(int lines)
1819 {
1820     GtkAdjustment *adj = GetVAdj();
1821     if ( !adj )
1822         return FALSE;
1823
1824 #ifdef __WXGTK20__
1825     int diff = (int)ceil(lines*adj->step_increment);
1826 #else
1827     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1828     int diff = 10*lines;
1829 #endif
1830
1831     return DoScroll(adj, diff);
1832 }
1833
1834 bool wxTextCtrl::ScrollPages(int pages)
1835 {
1836     GtkAdjustment *adj = GetVAdj();
1837     if ( !adj )
1838         return FALSE;
1839
1840     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1841 }
1842
1843
1844 // static
1845 wxVisualAttributes
1846 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1847 {
1848     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1849 }