src/gtk/notebook.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        notebook.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 "notebook.h"
  12 #endif
  13
  14 #include "wx/notebook.h"
  15
  16 #if wxUSE_NOTEBOOK
  17
  18 #include "wx/panel.h"
  19 #include "wx/utils.h"
  20 #include "wx/imaglist.h"
  21 #include "wx/intl.h"
  22 #include "wx/log.h"
  23
  24 #include <gdk/gdk.h>
  25 #include <gtk/gtk.h>
  26 #include "wx/gtk/win_gtk.h"
  27 #include <gdk/gdkkeysyms.h>
  28
  29 //-----------------------------------------------------------------------------
  30 // idle system
  31 //-----------------------------------------------------------------------------
  32
  33 extern void wxapp_install_idle_handler();
  34 extern bool g_isIdle;
  35
  36 //-----------------------------------------------------------------------------
  37 // data
  38 //-----------------------------------------------------------------------------
  39
  40 extern bool   g_blockEventsOnDrag;
  41
  42 //-----------------------------------------------------------------------------
  43 // debug
  44 //-----------------------------------------------------------------------------
  45
  46 #ifdef __WXDEBUG__
  47
  48 extern void debug_focus_in( GtkWidget* widget, const wxChar* name, const wxChar *window );
  49
  50 #endif
  51
  52 //-----------------------------------------------------------------------------
  53 // wxNotebookPage
  54 //-----------------------------------------------------------------------------
  55
  56 class wxNotebookPage: public wxObject
  57 {
  58 public:
  59   wxNotebookPage()
  60   {
  61     m_text = "";
  62     m_image = -1;
  63     m_page = (GtkNotebookPage *) NULL;
  64     m_client = (wxWindow *) NULL;
  65     m_box = (GtkWidget *) NULL;
  66   }
  67
  68   wxString           m_text;
  69   int                m_image;
  70   GtkNotebookPage   *m_page;
  71   GtkLabel          *m_label;
  72   wxWindow          *m_client;
  73   GtkWidget         *m_box;     // in which the label and image are packed
  74 };
  75
  76 //-----------------------------------------------------------------------------
  77 // "switch_page"
  78 //-----------------------------------------------------------------------------
  79
  80 static void gtk_notebook_page_change_callback(GtkNotebook *WXUNUSED(widget),
  81                                               GtkNotebookPage *WXUNUSED(page),
  82                                               gint page,
  83                                               wxNotebook *notebook )
  84 {
  85     if (g_isIdle)
  86         wxapp_install_idle_handler();
  87
  88     int old = notebook->GetSelection();
  89
  90     wxNotebookEvent event1( wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING,
  91                             notebook->GetId(), page, old );
  92     event1.SetEventObject( notebook );
  93
  94     if ((notebook->GetEventHandler()->ProcessEvent( event1 )) &&
  95         !event1.IsAllowed() )
  96     {
  97         /* program doesn't allow the page change */
  98         gtk_signal_emit_stop_by_name( GTK_OBJECT(notebook->m_widget), "switch_page" );
  99         return;
 100     }
 101
 102     wxNotebookEvent event2( wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED,
 103                             notebook->GetId(), page, old );
 104     event2.SetEventObject( notebook );
 105     notebook->GetEventHandler()->ProcessEvent( event2 );
 106 }
 107
 108 //-----------------------------------------------------------------------------
 109 // "size_allocate"
 110 //-----------------------------------------------------------------------------
 111
 112 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 113 {
 114     if (g_isIdle)
 115         wxapp_install_idle_handler();
 116
 117     if ((win->m_x == alloc->x) &&
 118         (win->m_y == alloc->y) &&
 119         (win->m_width == alloc->width) &&
 120         (win->m_height == alloc->height))
 121     {
 122         return;
 123     }
 124
 125     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 126
 127     /* GTK 1.2 up to version 1.2.5 is broken so that we have to call allocate
 128        here in order to make repositioning after resizing to take effect. */
 129     if ((gtk_major_version == 1) &&
 130         (gtk_minor_version == 2) &&
 131             (gtk_micro_version < 6) &&
 132         (win->m_wxwindow) &&
 133             (GTK_WIDGET_REALIZED(win->m_wxwindow)))
 134     {
 135         gtk_widget_size_allocate( win->m_wxwindow, alloc );
 136     }
 137 }
 138
 139 //-----------------------------------------------------------------------------
 140 // "realize" from m_widget
 141 //-----------------------------------------------------------------------------
 142
 143 static gint
 144 gtk_notebook_realized_callback( GtkWidget * WXUNUSED(widget), wxWindow *win )
 145 {
 146     if (g_isIdle)
 147         wxapp_install_idle_handler();
 148
 149     /* GTK 1.2 up to version 1.2.5 is broken so that we have to call a queue_resize
 150        here in order to make repositioning before showing to take effect. */
 151     gtk_widget_queue_resize( win->m_widget );
 152
 153     return FALSE;
 154 }
 155
 156 //-----------------------------------------------------------------------------
 157 // InsertChild callback for wxNotebook
 158 //-----------------------------------------------------------------------------
 159
 160 static void wxInsertChildInNotebook( wxNotebook* WXUNUSED(parent), wxWindow* WXUNUSED(child) )
 161 {
 162     /* we don't do anything here but pray */
 163 }
 164
 165 //-----------------------------------------------------------------------------
 166 // wxNotebook
 167 //-----------------------------------------------------------------------------
 168
 169 IMPLEMENT_DYNAMIC_CLASS(wxNotebook,wxControl)
 170
 171 BEGIN_EVENT_TABLE(wxNotebook, wxControl)
 172     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
 173 END_EVENT_TABLE()
 174
 175 void wxNotebook::Init()
 176 {
 177     m_imageList = (wxImageList *) NULL;
 178     m_pages.DeleteContents( TRUE );
 179     m_lastSelection = -1;
 180 }
 181
 182 wxNotebook::wxNotebook()
 183 {
 184     Init();
 185 }
 186
 187 wxNotebook::wxNotebook( wxWindow *parent, wxWindowID id,
 188       const wxPoint& pos, const wxSize& size,
 189       long style, const wxString& name )
 190 {
 191     Init();
 192     Create( parent, id, pos, size, style, name );
 193 }
 194
 195 wxNotebook::~wxNotebook()
 196 {
 197     /* don't generate change page events any more */
 198     gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
 199       GTK_SIGNAL_FUNC(gtk_notebook_page_change_callback), (gpointer) this );
 200
 201     DeleteAllPages();
 202 }
 203
 204 bool wxNotebook::Create(wxWindow *parent, wxWindowID id,
 205       const wxPoint& pos, const wxSize& size,
 206       long style, const wxString& name )
 207 {
 208     m_needParent = TRUE;
 209     m_acceptsFocus = TRUE;
 210     m_insertCallback = (wxInsertChildFunction)wxInsertChildInNotebook;
 211
 212     if (!PreCreation( parent, pos, size ) ||
 213         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 214     {
 215         wxFAIL_MSG( wxT("wxNoteBook creation failed") );
 216             return FALSE;
 217     }
 218
 219
 220     m_widget = gtk_notebook_new();
 221
 222 #ifdef __WXDEBUG__
 223     debug_focus_in( m_widget, wxT("wxNotebook::m_widget"), name );
 224 #endif
 225
 226     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 227
 228     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 229       GTK_SIGNAL_FUNC(gtk_notebook_page_change_callback), (gpointer)this );
 230
 231     m_parent->DoAddChild( this );
 232
 233         if (m_windowStyle & wxNB_RIGHT)
 234                 gtk_notebook_set_tab_pos( GTK_NOTEBOOK(m_widget), GTK_POS_RIGHT );
 235         if (m_windowStyle & wxNB_LEFT)
 236                 gtk_notebook_set_tab_pos( GTK_NOTEBOOK(m_widget), GTK_POS_LEFT );
 237         if (m_windowStyle & wxNB_BOTTOM)
 238                 gtk_notebook_set_tab_pos( GTK_NOTEBOOK(m_widget), GTK_POS_BOTTOM );
 239
 240     PostCreation();
 241
 242     SetFont( parent->GetFont() );
 243
 244     gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
 245                             GTK_SIGNAL_FUNC(gtk_notebook_realized_callback), (gpointer) this );
 246
 247     Show( TRUE );
 248
 249     return TRUE;
 250 }
 251
 252 void wxNotebook::SetFocus()
 253 {
 254     if (m_pages.GetCount() == 0) return;
 255
 256     wxNode *node = m_pages.Nth( GetSelection() );
 257
 258     if (!node) return;
 259
 260     wxNotebookPage *page = (wxNotebookPage*) node->Data();
 261
 262     page->m_client->SetFocus();
 263 }
 264
 265 int wxNotebook::GetSelection() const
 266 {
 267     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid notebook") );
 268
 269     GList *pages = GTK_NOTEBOOK(m_widget)->children;
 270
 271     if (g_list_length(pages) == 0) return -1;
 272
 273     GtkNotebook *notebook = GTK_NOTEBOOK(m_widget);
 274
 275     if (notebook->cur_page == NULL) return m_lastSelection;
 276
 277     return g_list_index( pages, (gpointer)(notebook->cur_page) );
 278 }
 279
 280 int wxNotebook::GetPageCount() const
 281 {
 282     return (int) g_list_length( GTK_NOTEBOOK(m_widget)->children );
 283 }
 284
 285 int wxNotebook::GetRowCount() const
 286 {
 287     return 1;
 288 }
 289
 290 wxString wxNotebook::GetPageText( int page ) const
 291 {
 292     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid notebook") );
 293
 294     wxNotebookPage* nb_page = GetNotebookPage(page);
 295     if (nb_page)
 296         return nb_page->m_text;
 297     else
 298         return wxT("");
 299 }
 300
 301 int wxNotebook::GetPageImage( int page ) const
 302 {
 303     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid notebook") );
 304
 305     wxNotebookPage* nb_page = GetNotebookPage(page);
 306     if (nb_page)
 307         return nb_page->m_image;
 308     else
 309         return -1;
 310 }
 311
 312 wxNotebookPage* wxNotebook::GetNotebookPage( int page ) const
 313 {
 314     wxCHECK_MSG( m_widget != NULL, (wxNotebookPage*) NULL, wxT("invalid notebook") );
 315
 316     wxCHECK_MSG( page < (int)m_pages.GetCount(), (wxNotebookPage*) NULL, wxT("invalid notebook index") );
 317
 318     wxNode *node = m_pages.Nth( page );
 319
 320     return (wxNotebookPage *) node->Data();
 321 }
 322
 323 int wxNotebook::SetSelection( int page )
 324 {
 325     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid notebook") );
 326
 327     wxCHECK_MSG( page < (int)m_pages.GetCount(), -1, wxT("invalid notebook index") );
 328
 329     int selOld = GetSelection();
 330
 331     gtk_notebook_set_page( GTK_NOTEBOOK(m_widget), page );
 332
 333     return selOld;
 334 }
 335
 336 void wxNotebook::AdvanceSelection( bool forward )
 337 {
 338     wxCHECK_RET( m_widget != NULL, wxT("invalid notebook") );
 339
 340     int sel = GetSelection();
 341     int max = GetPageCount();
 342
 343     if (forward)
 344         SetSelection( sel == max ? 0 : sel + 1 );
 345     else
 346         SetSelection( sel == 0 ? max-1 : sel - 1 );
 347 }
 348
 349 void wxNotebook::SetImageList( wxImageList* imageList )
 350 {
 351     m_imageList = imageList;
 352 }
 353
 354 bool wxNotebook::SetPageText( int page, const wxString &text )
 355 {
 356     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid notebook") );
 357
 358     wxNotebookPage* nb_page = GetNotebookPage(page);
 359
 360     wxCHECK_MSG( nb_page, FALSE, wxT("SetPageText: invalid page index") );
 361
 362     nb_page->m_text = text;
 363
 364     gtk_label_set( nb_page->m_label, nb_page->m_text.mbc_str() );
 365
 366     return TRUE;
 367 }
 368
 369 bool wxNotebook::SetPageImage( int page, int image )
 370 {
 371     /* HvdH 28-12-98: now it works, but it's a bit of a kludge */
 372
 373     wxNotebookPage* nb_page = GetNotebookPage(page);
 374
 375     if (!nb_page) return FALSE;
 376
 377     /* Optimization posibility: return immediately if image unchanged.
 378      * Not enabled because it may break existing (stupid) code that
 379      * manipulates the imagelist to cycle images */
 380
 381     /* if (image == nb_page->m_image) return TRUE; */
 382
 383     /* For different cases:
 384        1) no image -> no image
 385        2) image -> no image
 386        3) no image -> image
 387        4) image -> image */
 388
 389     if (image == -1 && nb_page->m_image == -1)
 390         return TRUE; /* Case 1): Nothing to do. */
 391
 392     GtkWidget *pixmapwid = (GtkWidget*) NULL;
 393
 394     if (nb_page->m_image != -1)
 395     {
 396         /* Case 2) or 4). There is already an image in the gtkhbox. Let's find it */
 397
 398         GList *child = gtk_container_children(GTK_CONTAINER(nb_page->m_box));
 399         while (child)
 400         {
 401             if (GTK_IS_PIXMAP(child->data))
 402             {
 403                 pixmapwid = GTK_WIDGET(child->data);
 404                 break;
 405             }
 406             child = child->next;
 407         }
 408
 409         /* We should have the pixmap widget now */
 410         wxASSERT(pixmapwid != NULL);
 411
 412         if (image == -1)
 413         {
 414             /* If there's no new widget, just remove the old from the box */
 415             gtk_container_remove(GTK_CONTAINER(nb_page->m_box), pixmapwid);
 416             nb_page->m_image = -1;
 417
 418             return TRUE; /* Case 2) */
 419         }
 420     }
 421
 422     /* Only cases 3) and 4) left */
 423     wxASSERT( m_imageList != NULL ); /* Just in case */
 424
 425     /* Construct the new pixmap */
 426     const wxBitmap *bmp = m_imageList->GetBitmap(image);
 427     GdkPixmap *pixmap = bmp->GetPixmap();
 428     GdkBitmap *mask = (GdkBitmap*) NULL;
 429     if ( bmp->GetMask() )
 430     {
 431         mask = bmp->GetMask()->GetBitmap();
 432     }
 433
 434     if (pixmapwid == NULL)
 435     {
 436         /* Case 3) No old pixmap. Create a new one and prepend it to the hbox */
 437         pixmapwid = gtk_pixmap_new (pixmap, mask );
 438
 439         /* CHECKME: Are these pack flags okay? */
 440         gtk_box_pack_start(GTK_BOX(nb_page->m_box), pixmapwid, FALSE, FALSE, 3);
 441         gtk_widget_show(pixmapwid);
 442     }
 443     else
 444     {
 445         /* Case 4) Simply replace the pixmap */
 446         gtk_pixmap_set(GTK_PIXMAP(pixmapwid), pixmap, mask);
 447     }
 448
 449     nb_page->m_image = image;
 450
 451     return TRUE;
 452 }
 453
 454 void wxNotebook::SetPageSize( const wxSize &WXUNUSED(size) )
 455 {
 456     wxFAIL_MSG( wxT("wxNotebook::SetPageSize not implemented") );
 457 }
 458
 459 void wxNotebook::SetPadding( const wxSize &WXUNUSED(padding) )
 460 {
 461     wxFAIL_MSG( wxT("wxNotebook::SetPadding not implemented") );
 462 }
 463
 464 void wxNotebook::SetTabSize(const wxSize& WXUNUSED(sz))
 465 {
 466     wxFAIL_MSG( wxT("wxNotebook::SetTabSize not implemented") );
 467 }
 468
 469 bool wxNotebook::DeleteAllPages()
 470 {
 471     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid notebook") );
 472
 473     while (m_pages.GetCount() > 0)
 474         DeletePage( m_pages.GetCount()-1 );
 475
 476     return TRUE;
 477 }
 478
 479 bool wxNotebook::DeletePage( int page )
 480 {
 481     wxNotebookPage* nb_page = GetNotebookPage(page);
 482     if (!nb_page) return FALSE;
 483
 484     /* GTK sets GtkNotebook.cur_page to NULL before sending
 485        the switvh page event */
 486     m_lastSelection = GetSelection();
 487
 488     nb_page->m_client->Destroy();
 489     m_pages.DeleteObject( nb_page );
 490
 491     m_lastSelection = -1;
 492
 493     return TRUE;
 494 }
 495
 496 bool wxNotebook::RemovePage( int page )
 497 {
 498     wxNotebookPage* nb_page = GetNotebookPage(page);
 499
 500     if (!nb_page) return FALSE;
 501
 502     gtk_notebook_remove_page( GTK_NOTEBOOK(m_widget), page );
 503
 504     m_pages.DeleteObject( nb_page );
 505
 506     return TRUE;
 507 }
 508
 509 bool wxNotebook::InsertPage( int position, wxWindow* win, const wxString& text,
 510                              bool select, int imageId )
 511 {
 512     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid notebook") );
 513
 514     wxCHECK_MSG( win->GetParent() == this, FALSE,
 515                wxT("Can't add a page whose parent is not the notebook!") );
 516
 517     /* don't receive switch page during addition */
 518     gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
 519       GTK_SIGNAL_FUNC(gtk_notebook_page_change_callback), (gpointer) this );
 520
 521     GtkNotebook *notebook = GTK_NOTEBOOK(m_widget);
 522
 523     wxNotebookPage *page = new wxNotebookPage();
 524
 525     if (position < 0)
 526         m_pages.Append( page );
 527     else
 528         m_pages.Insert( m_pages.Nth( position ), page );
 529
 530     page->m_client = win;
 531
 532     page->m_box = gtk_hbox_new( FALSE, 0 );
 533     gtk_container_border_width( GTK_CONTAINER(page->m_box), 2 );
 534
 535     gtk_signal_connect( GTK_OBJECT(win->m_widget), "size_allocate",
 536       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)win );
 537
 538     if (position < 0)
 539         gtk_notebook_append_page( notebook, win->m_widget, page->m_box );
 540     else
 541         gtk_notebook_insert_page( notebook, win->m_widget, page->m_box, position );
 542
 543     page->m_page = (GtkNotebookPage*) g_list_last(notebook->children)->data;
 544
 545     /* set the label image */
 546     page->m_image = imageId;
 547
 548     if (imageId != -1)
 549     {
 550         wxASSERT( m_imageList != NULL );
 551
 552         const wxBitmap *bmp = m_imageList->GetBitmap(imageId);
 553         GdkPixmap *pixmap = bmp->GetPixmap();
 554         GdkBitmap *mask = (GdkBitmap*) NULL;
 555         if ( bmp->GetMask() )
 556         {
 557             mask = bmp->GetMask()->GetBitmap();
 558         }
 559
 560         GtkWidget *pixmapwid = gtk_pixmap_new (pixmap, mask );
 561
 562         gtk_box_pack_start(GTK_BOX(page->m_box), pixmapwid, FALSE, FALSE, 3);
 563
 564         gtk_widget_show(pixmapwid);
 565     }
 566
 567     /* set the label text */
 568     page->m_text = text;
 569     if (page->m_text.IsEmpty()) page->m_text = wxT("");
 570
 571     page->m_label = GTK_LABEL( gtk_label_new(page->m_text.mbc_str()) );
 572     gtk_box_pack_end( GTK_BOX(page->m_box), GTK_WIDGET(page->m_label), FALSE, FALSE, 3 );
 573
 574     /* show the label */
 575     gtk_widget_show( GTK_WIDGET(page->m_label) );
 576
 577     if (select && (m_pages.GetCount() > 1))
 578     {
 579         if (position < 0)
 580             SetSelection( GetPageCount()-1 );
 581         else
 582             SetSelection( position );
 583     }
 584
 585     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 586       GTK_SIGNAL_FUNC(gtk_notebook_page_change_callback), (gpointer)this );
 587
 588     return TRUE;
 589 }
 590
 591 bool wxNotebook::AddPage(wxWindow* win, const wxString& text,
 592                          bool select, int imageId)
 593 {
 594     return InsertPage( -1, win, text, select, imageId );
 595 }
 596
 597 void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
 598 {
 599     if (event.IsWindowChange())
 600         AdvanceSelection( event.GetDirection() );
 601     else
 602         event.Skip();
 603 }
 604
 605 wxWindow *wxNotebook::GetPage( int page ) const
 606 {
 607     wxCHECK_MSG( m_widget != NULL, (wxWindow*) NULL, wxT("invalid notebook") );
 608
 609     wxNotebookPage* nb_page = GetNotebookPage(page);
 610     if (!nb_page)
 611         return (wxWindow *) NULL;
 612     else
 613         return nb_page->m_client;
 614 }
 615
 616 // override these 2 functions to do nothing: everything is done in OnSize
 617 void wxNotebook::SetConstraintSizes( bool WXUNUSED(recurse) )
 618 {
 619     // don't set the sizes of the pages - their correct size is not yet known
 620     wxControl::SetConstraintSizes(FALSE);
 621 }
 622
 623 bool wxNotebook::DoPhase( int WXUNUSED(nPhase) )
 624 {
 625     return TRUE;
 626 }
 627
 628 void wxNotebook::ApplyWidgetStyle()
 629 {
 630     // TODO, font for labels etc
 631
 632     SetWidgetStyle();
 633     gtk_widget_set_style( m_widget, m_widgetStyle );
 634 }
 635
 636 bool wxNotebook::IsOwnGtkWindow( GdkWindow *window )
 637 {
 638     return ((m_widget->window == window) ||
 639             (GTK_NOTEBOOK(m_widget)->panel == window));
 640 }
 641
 642 //-----------------------------------------------------------------------------
 643 // wxNotebookEvent
 644 //-----------------------------------------------------------------------------
 645
 646 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxNotifyEvent)
 647
 648 #endif