src/gtk/textctrl.cpp

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