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 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
 351     SetFont( parent->GetFont() );
 352
 353     wxSize size_best( DoGetBestSize() );
 354     wxSize new_size( size );
 355     if (new_size.x == -1)
 356         new_size.x = size_best.x;
 357     if (new_size.y == -1)
 358         new_size.y = size_best.y;
 359     if ((new_size.x != size.x) || (new_size.y != size.y))
 360         SetSize( new_size.x, new_size.y );
 361
 362     if (multi_line)
 363         gtk_widget_show(m_text);
 364
 365 #ifndef __WXGTK20__
 366     if (multi_line)
 367     {
 368         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 369           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 370
 371         // only initialize gs_gtk_text_draw once, starting from the next the
 372         // klass::draw will already be wxgtk_text_draw
 373         if ( !gs_gtk_text_draw )
 374         {
 375             GtkDrawCallback&
 376                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 377
 378             gs_gtk_text_draw = draw;
 379
 380             draw = wxgtk_text_draw;
 381         }
 382     }
 383 #endif // GTK+ 1.x
 384
 385     if (!value.IsEmpty())
 386     {
 387 #ifdef __WXGTK20__
 388         SetValue( value );
 389 #else
 390
 391 #if !GTK_CHECK_VERSION(1, 2, 0)
 392         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 393         // gtk_editable_insert_text()
 394         gtk_widget_realize(m_text);
 395 #endif // GTK 1.0
 396
 397         gint tmp = 0;
 398 #if wxUSE_UNICODE
 399         wxWX2MBbuf val = value.mbc_str();
 400         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 401 #else
 402         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 403 #endif
 404
 405         if (multi_line)
 406         {
 407             // Bring editable's cursor uptodate. Bug in GTK.
 408             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 409         }
 410
 411 #endif
 412     }
 413
 414     if (style & wxTE_PASSWORD)
 415     {
 416         if (!multi_line)
 417             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 418     }
 419
 420     if (style & wxTE_READONLY)
 421     {
 422         if (!multi_line)
 423             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 424 #ifdef __WXGTK20__
 425         else
 426             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 427     }
 428 #else
 429     }
 430     else
 431     {
 432         if (multi_line)
 433             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 434     }
 435 #endif
 436
 437     // We want to be notified about text changes.
 438 #ifdef __WXGTK20__
 439     if (multi_line)
 440     {
 441         g_signal_connect( G_OBJECT(buffer), "changed",
 442             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 443     }
 444     else
 445 #endif
 446     {
 447     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 448        GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 449     }
 450
 451     // we don't set a valid background colour, because the window
 452     // manager should use a default one
 453     m_backgroundColour = wxColour();
 454
 455     wxColour colFg = parent->GetForegroundColour();
 456     SetForegroundColour( colFg );
 457
 458     m_cursor = wxCursor( wxCURSOR_IBEAM );
 459
 460     wxTextAttr attrDef( colFg, m_backgroundColour, parent->GetFont() );
 461     SetDefaultStyle( attrDef );
 462
 463     Show( TRUE );
 464
 465     return TRUE;
 466 }
 467
 468 void wxTextCtrl::CalculateScrollbar()
 469 {
 470 #ifndef __WXGTK20__
 471     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 472
 473     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 474
 475     if (adj->upper - adj->page_size < 0.8)
 476     {
 477         if (m_vScrollbarVisible)
 478         {
 479             gtk_widget_hide( m_vScrollbar );
 480             m_vScrollbarVisible = FALSE;
 481         }
 482     }
 483     else
 484     {
 485         if (!m_vScrollbarVisible)
 486         {
 487             gtk_widget_show( m_vScrollbar );
 488             m_vScrollbarVisible = TRUE;
 489         }
 490     }
 491 #endif
 492 }
 493
 494 wxString wxTextCtrl::GetValue() const
 495 {
 496     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 497
 498     wxString tmp;
 499     if (m_windowStyle & wxTE_MULTILINE)
 500     {
 501 #ifdef __WXGTK20__
 502         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 503
 504         GtkTextIter start;
 505         gtk_text_buffer_get_start_iter( text_buffer, &start );
 506         GtkTextIter end;
 507         gtk_text_buffer_get_end_iter( text_buffer, &end );
 508         gchar *text = gtk_text_buffer_get_text( text_buffer, &start, &end, TRUE );
 509
 510 #if wxUSE_UNICODE
 511         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 512 #else
 513         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 514 #endif
 515         tmp = buffer;
 516
 517         g_free( text );
 518 #else
 519         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 520         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 521         tmp = text;
 522         g_free( text );
 523 #endif
 524     }
 525     else
 526     {
 527         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 528     }
 529
 530     return tmp;
 531 }
 532
 533 void wxTextCtrl::SetValue( const wxString &value )
 534 {
 535     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 536
 537     if (m_windowStyle & wxTE_MULTILINE)
 538     {
 539 #ifdef __WXGTK20__
 540
 541 #if wxUSE_UNICODE
 542         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 543 #else
 544         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 545 #endif
 546         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 547         gtk_text_buffer_set_text( text_buffer, buffer, strlen(buffer) );
 548
 549 #else
 550         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 551         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 552         len = 0;
 553         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 554 #endif
 555     }
 556     else
 557     {
 558         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 559     }
 560
 561     // GRG, Jun/2000: Changed this after a lot of discussion in
 562     //   the lists. wxWindows 2.2 will have a set of flags to
 563     //   customize this behaviour.
 564     SetInsertionPoint(0);
 565
 566     m_modified = FALSE;
 567 }
 568
 569 void wxTextCtrl::WriteText( const wxString &text )
 570 {
 571     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 572
 573     if ( text.empty() )
 574         return;
 575
 576     if ( m_windowStyle & wxTE_MULTILINE )
 577     {
 578 #ifdef __WXGTK20__
 579
 580 #if wxUSE_UNICODE
 581         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 582 #else
 583         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 584 #endif
 585         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 586
 587         // TODO: Call whatever is needed to delete the selection.
 588         wxGtkTextInsert( m_text, text_buffer, m_defaultStyle, buffer );
 589
 590         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 591         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 592         if ( adj->value == adj->upper - adj->page_size )
 593         {
 594             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 595                     gtk_text_buffer_get_insert( text_buffer ), 0.0, FALSE, 0.0, 1.0 );
 596         }
 597 #else // GTK 1.x
 598         // After cursor movements, gtk_text_get_point() is wrong by one.
 599         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 600
 601         // always use m_defaultStyle, even if it is empty as otherwise
 602         // resetting the style and appending some more text wouldn't work: if
 603         // we don't specify the style explicitly, the old style would be used
 604         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 605         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 606
 607         // we called wxGtkTextInsert with correct font, no need to do anything
 608         // in UpdateFontIfNeeded() any longer
 609         if ( !text.empty() )
 610         {
 611             m_updateFont = FALSE;
 612         }
 613
 614         // Bring editable's cursor back uptodate.
 615         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 616 #endif // GTK 1.x/2.0
 617     }
 618     else // single line
 619     {
 620         // First remove the selection if there is one
 621         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 622
 623         // This moves the cursor pos to behind the inserted text.
 624         gint len = GET_EDITABLE_POS(m_text);
 625
 626 #ifdef __WXGTK20__
 627
 628 #if wxUSE_UNICODE
 629         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 630 #else
 631         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 632 #endif
 633         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 634
 635 #else
 636         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 637 #endif
 638
 639         // Bring entry's cursor uptodate.
 640         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 641     }
 642
 643     m_modified = TRUE;
 644 }
 645
 646 void wxTextCtrl::AppendText( const wxString &text )
 647 {
 648     SetInsertionPointEnd();
 649     WriteText( text );
 650 }
 651
 652 wxString wxTextCtrl::GetLineText( long lineNo ) const
 653 {
 654     if (m_windowStyle & wxTE_MULTILINE)
 655     {
 656 #ifndef __WXGTK20__
 657         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 658         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 659
 660         if (text)
 661         {
 662             wxString buf(wxT(""));
 663             long i;
 664             int currentLine = 0;
 665             for (i = 0; currentLine != lineNo && text[i]; i++ )
 666                 if (text[i] == '\n')
 667             currentLine++;
 668             // Now get the text
 669             int j;
 670             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 671                 buf += text[i];
 672
 673             g_free( text );
 674             return buf;
 675         }
 676         else
 677 #endif
 678         {
 679             return wxEmptyString;
 680         }
 681     }
 682     else
 683     {
 684         if (lineNo == 0) return GetValue();
 685         return wxEmptyString;
 686     }
 687 }
 688
 689 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 690 {
 691   /* If you implement this, don't forget to update the documentation!
 692    * (file docs/latex/wx/text.tex) */
 693     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 694 }
 695
 696 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 697 {
 698     if ( m_windowStyle & wxTE_MULTILINE )
 699     {
 700         wxString text = GetValue();
 701
 702         // cast to prevent warning. But pos really should've been unsigned.
 703         if( (unsigned long)pos > text.Len()  )
 704             return FALSE;
 705
 706         *x=0;   // First Col
 707         *y=0;   // First Line
 708
 709         const wxChar* stop = text.c_str() + pos;
 710         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 711         {
 712             if (*p == wxT('\n'))
 713             {
 714                 (*y)++;
 715                 *x=0;
 716             }
 717             else
 718                 (*x)++;
 719         }
 720     }
 721     else // single line control
 722     {
 723         if ( pos <= GTK_ENTRY(m_text)->text_length )
 724         {
 725             *y = 0;
 726             *x = pos;
 727         }
 728         else
 729         {
 730             // index out of bounds
 731             return FALSE;
 732         }
 733     }
 734
 735     return TRUE;
 736 }
 737
 738 long wxTextCtrl::XYToPosition(long x, long y ) const
 739 {
 740     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 741
 742     long pos=0;
 743     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 744
 745     pos += x;
 746     return pos;
 747 }
 748
 749 int wxTextCtrl::GetLineLength(long lineNo) const
 750 {
 751     wxString str = GetLineText (lineNo);
 752     return (int) str.Length();
 753 }
 754
 755 int wxTextCtrl::GetNumberOfLines() const
 756 {
 757     if (m_windowStyle & wxTE_MULTILINE)
 758     {
 759 #ifdef __WXGTK20__
 760         GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 761
 762         return gtk_text_buffer_get_line_count( buffer );
 763 #else
 764         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 765         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 766
 767         if (text)
 768         {
 769             int currentLine = 0;
 770             for (int i = 0; i < len; i++ )
 771             {
 772                 if (text[i] == '\n')
 773                     currentLine++;
 774             }
 775             g_free( text );
 776
 777             // currentLine is 0 based, add 1 to get number of lines
 778             return currentLine + 1;
 779         }
 780         else
 781         {
 782             return 0;
 783         }
 784 #endif
 785     }
 786     else
 787     {
 788         return 1;
 789     }
 790 }
 791
 792 void wxTextCtrl::SetInsertionPoint( long pos )
 793 {
 794     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 795
 796     if (m_windowStyle & wxTE_MULTILINE)
 797     {
 798 #ifdef __WXGTK20__
 799         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 800         GtkTextIter iter;
 801         gtk_text_buffer_get_iter_at_offset( text_buffer, &iter, pos );
 802         gtk_text_buffer_place_cursor( text_buffer, &iter );
 803 #else
 804         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 805           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 806
 807         /* we fake a set_point by inserting and deleting. as the user
 808            isn't supposed to get to know about this non-sense, we
 809            disconnect so that no events are sent to the user program. */
 810
 811         gint tmp = (gint)pos;
 812         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 813         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 814
 815         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 816           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 817
 818         // bring editable's cursor uptodate. Bug in GTK.
 819         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 820 #endif
 821     }
 822     else
 823     {
 824         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 825
 826         // Bring editable's cursor uptodate. Bug in GTK.
 827         SET_EDITABLE_POS(m_text, (guint32)pos);
 828     }
 829 }
 830
 831 void wxTextCtrl::SetInsertionPointEnd()
 832 {
 833     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 834
 835     if (m_windowStyle & wxTE_MULTILINE)
 836     {
 837 #ifdef __WXGTK20__
 838         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 839         GtkTextIter end;
 840         gtk_text_buffer_get_end_iter( text_buffer, &end );
 841         gtk_text_buffer_place_cursor( text_buffer, &end );
 842 #else
 843         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 844 #endif
 845     }
 846     else
 847     {
 848         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 849     }
 850 }
 851
 852 void wxTextCtrl::SetEditable( bool editable )
 853 {
 854     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 855
 856     if (m_windowStyle & wxTE_MULTILINE)
 857     {
 858 #ifdef __WXGTK20__
 859         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 860 #else
 861         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 862 #endif
 863     }
 864     else
 865     {
 866         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 867     }
 868 }
 869
 870 bool wxTextCtrl::Enable( bool enable )
 871 {
 872     if (!wxWindowBase::Enable(enable))
 873     {
 874         // nothing to do
 875         return FALSE;
 876     }
 877
 878     if (m_windowStyle & wxTE_MULTILINE)
 879     {
 880 #ifdef __WXGTK20__
 881         SetEditable( enable );
 882 #else
 883         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 884         OnParentEnable(enable);
 885 #endif
 886     }
 887     else
 888     {
 889         gtk_widget_set_sensitive( m_text, enable );
 890     }
 891
 892     return TRUE;
 893 }
 894
 895 // wxGTK-specific: called recursively by Enable,
 896 // to give widgets an oppprtunity to correct their colours after they
 897 // have been changed by Enable
 898 void wxTextCtrl::OnParentEnable( bool enable )
 899 {
 900     // If we have a custom background colour, we use this colour in both
 901     // disabled and enabled mode, or we end up with a different colour under the
 902     // text.
 903     wxColour oldColour = GetBackgroundColour();
 904     if (oldColour.Ok())
 905     {
 906         // Need to set twice or it'll optimize the useful stuff out
 907         if (oldColour == * wxWHITE)
 908             SetBackgroundColour(*wxBLACK);
 909         else
 910             SetBackgroundColour(*wxWHITE);
 911         SetBackgroundColour(oldColour);
 912     }
 913 }
 914
 915 void wxTextCtrl::MarkDirty()
 916 {
 917     m_modified = TRUE;
 918 }
 919
 920 void wxTextCtrl::DiscardEdits()
 921 {
 922     m_modified = FALSE;
 923 }
 924
 925 // ----------------------------------------------------------------------------
 926 // max text length support
 927 // ----------------------------------------------------------------------------
 928
 929 void wxTextCtrl::IgnoreNextTextUpdate()
 930 {
 931     m_ignoreNextUpdate = TRUE;
 932 }
 933
 934 bool wxTextCtrl::IgnoreTextUpdate()
 935 {
 936     if ( m_ignoreNextUpdate )
 937     {
 938         m_ignoreNextUpdate = FALSE;
 939
 940         return TRUE;
 941     }
 942
 943     return FALSE;
 944 }
 945
 946 void wxTextCtrl::SetMaxLength(unsigned long len)
 947 {
 948     if ( !HasFlag(wxTE_MULTILINE) )
 949     {
 950         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
 951
 952         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
 953         // we had tried to enter more text than allowed by max text length and
 954         // the text wasn't really changed
 955         //
 956         // to detect this and generate TEXT_MAXLEN event instead of
 957         // TEXT_CHANGED one in this case we also catch "insert_text" signal
 958         //
 959         // when max len is set to 0 we disconnect our handler as it means that
 960         // we shouldn't check anything any more
 961         if ( len )
 962         {
 963             gtk_signal_connect( GTK_OBJECT(m_text),
 964                                 "insert_text",
 965                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 966                                 (gpointer)this);
 967         }
 968         else // no checking
 969         {
 970             gtk_signal_disconnect_by_func
 971             (
 972                 GTK_OBJECT(m_text),
 973                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 974                 (gpointer)this
 975             );
 976         }
 977     }
 978 }
 979
 980 void wxTextCtrl::SetSelection( long from, long to )
 981 {
 982     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 983
 984     if (from == -1 && to == -1)
 985     {
 986         from = 0;
 987         to = GetValue().Length();
 988     }
 989
 990 #ifndef __WXGTK20__
 991     if ( (m_windowStyle & wxTE_MULTILINE) &&
 992          !GTK_TEXT(m_text)->line_start_cache )
 993     {
 994         // tell the programmer that it didn't work
 995         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 996         return;
 997     }
 998 #endif
 999
1000     if (m_windowStyle & wxTE_MULTILINE)
1001     {
1002 #ifdef __WXGTK20__
1003         GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1004
1005         GtkTextIter fromi, toi;
1006         gtk_text_buffer_get_iter_at_offset( buf, &fromi, from );
1007         gtk_text_buffer_get_iter_at_offset( buf, &toi, to );
1008
1009         gtk_text_buffer_place_cursor( buf, &toi );
1010         gtk_text_buffer_move_mark_by_name( buf, "selection_bound", &fromi );
1011 #else
1012         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1013 #endif
1014     }
1015     else
1016     {
1017         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1018     }
1019 }
1020
1021 void wxTextCtrl::ShowPosition( long pos )
1022 {
1023     if (m_windowStyle & wxTE_MULTILINE)
1024     {
1025 #ifdef __WXGTK20__
1026         GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1027         GtkTextIter iter;
1028         gtk_text_buffer_get_start_iter( buf, &iter );
1029         gtk_text_iter_set_offset( &iter, pos );
1030         GtkTextMark *mark = gtk_text_buffer_create_mark( buf, NULL, &iter, TRUE );
1031         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1032 #else // GTK 1.x
1033         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1034         float totalLines =  (float) GetNumberOfLines();
1035         long posX;
1036         long posY;
1037         PositionToXY(pos, &posX, &posY);
1038         float posLine = (float) posY;
1039         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1040         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1041 #endif // GTK 1.x/2.x
1042     }
1043 }
1044
1045 long wxTextCtrl::GetInsertionPoint() const
1046 {
1047     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1048
1049 #ifdef __WXGTK20__
1050     if (m_windowStyle & wxTE_MULTILINE)
1051     {
1052         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1053
1054         // There is no direct accessor for the cursor, but
1055         // internally, the cursor is the "mark" called
1056         // "insert" in the text view's btree structure.
1057
1058         GtkTextMark *mark = gtk_text_buffer_get_insert( text_buffer );
1059         GtkTextIter cursor;
1060         gtk_text_buffer_get_iter_at_mark( text_buffer, &cursor, mark );
1061
1062         return gtk_text_iter_get_offset( &cursor );
1063     }
1064     else
1065 #endif
1066     {
1067     return (long) GET_EDITABLE_POS(m_text);
1068     }
1069 }
1070
1071 long wxTextCtrl::GetLastPosition() const
1072 {
1073     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1074
1075     int pos = 0;
1076
1077     if (m_windowStyle & wxTE_MULTILINE)
1078     {
1079 #ifdef __WXGTK20__
1080         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1081         GtkTextIter end;
1082         gtk_text_buffer_get_end_iter( text_buffer, &end );
1083
1084         pos = gtk_text_iter_get_offset( &end );
1085 #else
1086         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1087 #endif
1088     }
1089     else
1090     {
1091         pos = GTK_ENTRY(m_text)->text_length;
1092     }
1093
1094     return (long)pos;
1095 }
1096
1097 void wxTextCtrl::Remove( long from, long to )
1098 {
1099     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1100
1101 #ifdef __WXGTK20__
1102     if (m_windowStyle & wxTE_MULTILINE)
1103     {
1104         GtkTextBuffer *
1105             text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1106
1107         GtkTextIter fromi, toi;
1108         gtk_text_buffer_get_iter_at_offset( text_buffer, &fromi, from );
1109         gtk_text_buffer_get_iter_at_offset( text_buffer, &toi, to );
1110
1111         gtk_text_buffer_delete( text_buffer, &fromi, &toi );
1112     }
1113     else // single line
1114 #endif
1115     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1116 }
1117
1118 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1119 {
1120     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1121
1122     Remove( from, to );
1123
1124     if (!value.IsEmpty())
1125     {
1126 #ifdef __WXGTK20__
1127         SetInsertionPoint( from );
1128         WriteText( value );
1129 #else // GTK 1.x
1130         gint pos = (gint)from;
1131 #if wxUSE_UNICODE
1132         wxWX2MBbuf buf = value.mbc_str();
1133         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1134 #else
1135         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1136 #endif // wxUSE_UNICODE
1137 #endif // GTK 1.x/2.x
1138     }
1139 }
1140
1141 void wxTextCtrl::Cut()
1142 {
1143     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1144
1145 #ifndef __WXGTK20__
1146     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1147 #endif
1148 }
1149
1150 void wxTextCtrl::Copy()
1151 {
1152     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1153
1154 #ifndef __WXGTK20__
1155     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1156 #endif
1157 }
1158
1159 void wxTextCtrl::Paste()
1160 {
1161     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1162
1163 #ifndef __WXGTK20__
1164     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1165 #endif
1166 }
1167
1168 // Undo/redo
1169 void wxTextCtrl::Undo()
1170 {
1171     // TODO
1172     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1173 }
1174
1175 void wxTextCtrl::Redo()
1176 {
1177     // TODO
1178     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1179 }
1180
1181 bool wxTextCtrl::CanUndo() const
1182 {
1183     // TODO
1184     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1185     return FALSE;
1186 }
1187
1188 bool wxTextCtrl::CanRedo() const
1189 {
1190     // TODO
1191     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1192     return FALSE;
1193 }
1194
1195 // If the return values from and to are the same, there is no
1196 // selection.
1197 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1198 {
1199     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1200
1201     gint from = -1;
1202     gint to = -1;
1203     bool haveSelection = FALSE;
1204
1205 #ifdef __WXGTK20__
1206      if (m_windowStyle & wxTE_MULTILINE)
1207      {
1208          GtkTextBuffer *buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (m_text));
1209          GtkTextIter ifrom, ito;
1210          if ( gtk_text_buffer_get_selection_bounds(buffer, &ifrom, &ito) )
1211          {
1212              haveSelection = TRUE;
1213              from = gtk_text_iter_get_offset(&ifrom);
1214              to = gtk_text_iter_get_offset(&ito);
1215          }
1216      }
1217      else  // not multi-line
1218      {
1219          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1220                                                  &from, &to) )
1221          {
1222              haveSelection = TRUE;
1223          }
1224      }
1225 #else //  not GTK2
1226      if ( (GTK_EDITABLE(m_text)->has_selection) )
1227      {
1228          haveSelection = TRUE;
1229          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1230          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1231      }
1232 #endif
1233
1234      if (! haveSelection )
1235           from = to = GetInsertionPoint();
1236
1237      if ( from > to )
1238      {
1239          // exchange them to be compatible with wxMSW
1240          gint tmp = from;
1241          from = to;
1242          to = tmp;
1243      }
1244
1245     if ( fromOut )
1246         *fromOut = from;
1247     if ( toOut )
1248         *toOut = to;
1249 }
1250
1251
1252 bool wxTextCtrl::IsEditable() const
1253 {
1254     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1255
1256 #ifdef __WXGTK20__
1257     if (m_windowStyle & wxTE_MULTILINE)
1258     {
1259         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1260     }
1261     else
1262     {
1263         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1264     }
1265 #else
1266     return GTK_EDITABLE(m_text)->editable;
1267 #endif
1268 }
1269
1270 bool wxTextCtrl::IsModified() const
1271 {
1272     return m_modified;
1273 }
1274
1275 void wxTextCtrl::Clear()
1276 {
1277     SetValue( wxT("") );
1278 }
1279
1280 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1281 {
1282     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1283
1284     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1285     {
1286         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1287         event.SetEventObject(this);
1288         event.SetString(GetValue());
1289         if (GetEventHandler()->ProcessEvent(event)) return;
1290     }
1291
1292     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1293     {
1294         // This will invoke the dialog default action, such
1295         // as the clicking the default button.
1296
1297         wxWindow *top_frame = m_parent;
1298         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1299             top_frame = top_frame->GetParent();
1300
1301         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1302         {
1303             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1304
1305             if (window->default_widget)
1306             {
1307                 gtk_widget_activate (window->default_widget);
1308                 return;
1309             }
1310         }
1311     }
1312
1313     key_event.Skip();
1314 }
1315
1316 GtkWidget* wxTextCtrl::GetConnectWidget()
1317 {
1318     return GTK_WIDGET(m_text);
1319 }
1320
1321 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1322 {
1323     if (m_windowStyle & wxTE_MULTILINE)
1324     {
1325 #ifdef __WXGTK20__
1326         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1327 #else
1328         return (window == GTK_TEXT(m_text)->text_area);
1329 #endif
1330     }
1331     else
1332     {
1333         return (window == GTK_ENTRY(m_text)->text_area);
1334     }
1335 }
1336
1337 // the font will change for subsequent text insertiongs
1338 bool wxTextCtrl::SetFont( const wxFont &font )
1339 {
1340     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1341
1342     if ( !wxTextCtrlBase::SetFont(font) )
1343     {
1344         // font didn't change, nothing to do
1345         return FALSE;
1346     }
1347
1348     if ( m_windowStyle & wxTE_MULTILINE )
1349     {
1350         m_updateFont = TRUE;
1351
1352         m_defaultStyle.SetFont(font);
1353
1354         ChangeFontGlobally();
1355     }
1356
1357     return TRUE;
1358 }
1359
1360 void wxTextCtrl::ChangeFontGlobally()
1361 {
1362     // this method is very inefficient and hence should be called as rarely as
1363     // possible!
1364     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1365                   _T("shouldn't be called for single line controls") );
1366
1367     wxString value = GetValue();
1368     if ( !value.IsEmpty() )
1369     {
1370         m_updateFont = FALSE;
1371
1372         Clear();
1373         AppendText(value);
1374     }
1375 }
1376
1377 void wxTextCtrl::UpdateFontIfNeeded()
1378 {
1379     if ( m_updateFont )
1380         ChangeFontGlobally();
1381 }
1382
1383 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1384 {
1385     if ( !wxControl::SetForegroundColour(colour) )
1386         return FALSE;
1387
1388     // update default fg colour too
1389     m_defaultStyle.SetTextColour(colour);
1390
1391     return TRUE;
1392 }
1393
1394 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1395 {
1396     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1397
1398     if ( !wxControl::SetBackgroundColour( colour ) )
1399         return FALSE;
1400
1401     if (!m_widget->window)
1402         return FALSE;
1403
1404     wxColour sysbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
1405     if (sysbg.Red() == colour.Red() &&
1406         sysbg.Green() == colour.Green() &&
1407         sysbg.Blue() == colour.Blue())
1408     {
1409         return FALSE; // FIXME or TRUE?
1410     }
1411
1412     if (!m_backgroundColour.Ok())
1413         return FALSE;
1414
1415     if (m_windowStyle & wxTE_MULTILINE)
1416     {
1417 #ifndef __WXGTK20__
1418         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1419         if (!window)
1420             return FALSE;
1421         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1422         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1423         gdk_window_clear( window );
1424 #endif
1425     }
1426
1427     // change active background color too
1428     m_defaultStyle.SetBackgroundColour( colour );
1429
1430     return TRUE;
1431 }
1432
1433 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1434 {
1435     if ( m_windowStyle & wxTE_MULTILINE )
1436     {
1437         if ( style.IsDefault() )
1438         {
1439             // nothing to do
1440             return TRUE;
1441         }
1442 #ifdef __WXGTK20__
1443         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1444         gint l = gtk_text_buffer_get_char_count( text_buffer );
1445
1446         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1447                      _T("invalid range in wxTextCtrl::SetStyle") );
1448
1449         GtkTextIter starti, endi;
1450         gtk_text_buffer_get_iter_at_offset( text_buffer, &starti, start );
1451         gtk_text_buffer_get_iter_at_offset( text_buffer, &endi, end );
1452
1453         // use the attributes from style which are set in it and fall back
1454         // first to the default style and then to the text control default
1455         // colours for the others
1456         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1457
1458         PangoFontDescription *font_description = attr.HasFont()
1459                              ? attr.GetFont().GetNativeFontInfo()->description
1460                              : NULL;
1461
1462         GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
1463                                                : NULL;
1464
1465         GdkColor *colBg = attr.HasBackgroundColour()
1466                             ? attr.GetBackgroundColour().GetColor()
1467                             : NULL;
1468
1469         GtkTextTag *tag;
1470         tag = gtk_text_buffer_create_tag( text_buffer, NULL, "font-desc", font_description,
1471                                          "foreground-gdk", colFg,
1472                                          "background-gdk", colBg, NULL );
1473         gtk_text_buffer_apply_tag( text_buffer, tag, &starti, &endi );
1474
1475          return TRUE;
1476 #else
1477         // VERY dirty way to do that - removes the required text and re-adds it
1478         // with styling (FIXME)
1479
1480         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1481
1482         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1483                      _T("invalid range in wxTextCtrl::SetStyle") );
1484
1485         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1486         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1487         wxString tmp(text,*wxConvCurrent);
1488         g_free( text );
1489
1490         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1491         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1492
1493 #if wxUSE_UNICODE
1494         wxWX2MBbuf buf = tmp.mbc_str();
1495         const char *txt = buf;
1496         size_t txtlen = strlen(buf);
1497 #else
1498         const char *txt = tmp;
1499         size_t txtlen = tmp.length();
1500 #endif
1501
1502         // use the attributes from style which are set in it and fall back
1503         // first to the default style and then to the text control default
1504         // colours for the others
1505         wxGtkTextInsert(m_text,
1506                         wxTextAttr::Combine(style, m_defaultStyle, this),
1507                         txt,
1508                         txtlen);
1509
1510         /* does not seem to help under GTK+ 1.2 !!!
1511         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1512         SetInsertionPoint( old_pos );
1513 #endif
1514         return TRUE;
1515     }
1516     else // singe line
1517     {
1518         // cannot do this for GTK+'s Entry widget
1519         return FALSE;
1520     }
1521 }
1522
1523 void wxTextCtrl::ApplyWidgetStyle()
1524 {
1525     if (m_windowStyle & wxTE_MULTILINE)
1526     {
1527         // how ?
1528     }
1529     else
1530     {
1531         SetWidgetStyle();
1532         gtk_widget_set_style( m_text, m_widgetStyle );
1533     }
1534 }
1535
1536 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1537 {
1538     Cut();
1539 }
1540
1541 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1542 {
1543     Copy();
1544 }
1545
1546 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1547 {
1548     Paste();
1549 }
1550
1551 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1552 {
1553     Undo();
1554 }
1555
1556 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1557 {
1558     Redo();
1559 }
1560
1561 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1562 {
1563     event.Enable( CanCut() );
1564 }
1565
1566 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1567 {
1568     event.Enable( CanCopy() );
1569 }
1570
1571 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1572 {
1573     event.Enable( CanPaste() );
1574 }
1575
1576 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1577 {
1578     event.Enable( CanUndo() );
1579 }
1580
1581 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1582 {
1583     event.Enable( CanRedo() );
1584 }
1585
1586 void wxTextCtrl::OnInternalIdle()
1587 {
1588     wxCursor cursor = m_cursor;
1589     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1590
1591     if (cursor.Ok())
1592     {
1593 #ifndef __WXGTK20__
1594         GdkWindow *window = (GdkWindow*) NULL;
1595         if (HasFlag(wxTE_MULTILINE))
1596             window = GTK_TEXT(m_text)->text_area;
1597         else
1598             window = GTK_ENTRY(m_text)->text_area;
1599
1600         if (window)
1601             gdk_window_set_cursor( window, cursor.GetCursor() );
1602
1603         if (!g_globalCursor.Ok())
1604             cursor = *wxSTANDARD_CURSOR;
1605
1606         window = m_widget->window;
1607         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1608             gdk_window_set_cursor( window, cursor.GetCursor() );
1609 #endif
1610     }
1611
1612     if (g_delayedFocus == this)
1613     {
1614         if (GTK_WIDGET_REALIZED(m_widget))
1615         {
1616             gtk_widget_grab_focus( m_widget );
1617             g_delayedFocus = NULL;
1618         }
1619     }
1620
1621     if (wxUpdateUIEvent::CanUpdate(this))
1622         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1623 }
1624
1625 wxSize wxTextCtrl::DoGetBestSize() const
1626 {
1627     // FIXME should be different for multi-line controls...
1628     wxSize ret( wxControl::DoGetBestSize() );
1629     return wxSize(80, ret.y);
1630 }
1631
1632 // ----------------------------------------------------------------------------
1633 // freeze/thaw
1634 // ----------------------------------------------------------------------------
1635
1636 void wxTextCtrl::Freeze()
1637 {
1638 #ifndef __WXGTK20__
1639     if ( HasFlag(wxTE_MULTILINE) )
1640     {
1641         gtk_text_freeze(GTK_TEXT(m_text));
1642     }
1643 #endif
1644 }
1645
1646 void wxTextCtrl::Thaw()
1647 {
1648 #ifndef __WXGTK20__
1649     if ( HasFlag(wxTE_MULTILINE) )
1650     {
1651         GTK_TEXT(m_text)->vadj->value = 0.0;
1652
1653         gtk_text_thaw(GTK_TEXT(m_text));
1654     }
1655 #endif
1656 }
1657
1658 // ----------------------------------------------------------------------------
1659 // scrolling
1660 // ----------------------------------------------------------------------------
1661
1662 GtkAdjustment *wxTextCtrl::GetVAdj() const
1663 {
1664 #ifdef __WXGTK20__
1665     return NULL;
1666 #else
1667     return HasFlag(wxTE_MULTILINE) ? GTK_TEXT(m_text)->vadj : NULL;
1668 #endif
1669 }
1670
1671 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1672 {
1673 #ifndef __WXGTK20__
1674     float value = adj->value + diff;
1675
1676     if ( value < 0 )
1677         value = 0;
1678
1679     float upper = adj->upper - adj->page_size;
1680     if ( value > upper )
1681         value = upper;
1682
1683     // did we noticeably change the scroll position?
1684     if ( fabs(adj->value - value) < 0.2 )
1685     {
1686         // well, this is what Robert does in wxScrollBar, so it must be good...
1687         return FALSE;
1688     }
1689
1690     adj->value = value;
1691
1692     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1693
1694 #endif
1695     return TRUE;
1696 }
1697
1698 bool wxTextCtrl::ScrollLines(int lines)
1699 {
1700 #ifdef __WXGTK20__
1701     return FALSE;
1702 #else
1703     GtkAdjustment *adj = GetVAdj();
1704     if ( !adj )
1705         return FALSE;
1706
1707     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1708     static const int KEY_SCROLL_PIXELS = 10;
1709
1710     return DoScroll(adj, lines*KEY_SCROLL_PIXELS);
1711 #endif
1712 }
1713
1714 bool wxTextCtrl::ScrollPages(int pages)
1715 {
1716 #ifdef __WXGTK20__
1717     return FALSE;
1718 #else
1719     GtkAdjustment *adj = GetVAdj();
1720     if ( !adj )
1721         return FALSE;
1722
1723     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1724 #endif
1725 }
1726