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