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 #include "wx/panel.h"
  16 #include "wx/utils.h"
  17 #include "wx/imaglist.h"
  18 #include "wx/intl.h"
  19 #include "wx/log.h"
  20
  21 //-----------------------------------------------------------------------------
  22 // wxNotebookPage
  23 //-----------------------------------------------------------------------------
  24
  25 class wxNotebookPage: public wxObject
  26 {
  27 public:
  28   wxNotebookPage()
  29   {
  30     m_id = -1;
  31     m_text = "";
  32     m_image = -1;
  33     m_page = (GtkNotebookPage *) NULL;
  34     m_client = (wxWindow *) NULL;
  35     m_parent = (GtkNotebook *) NULL;
  36     m_box = (GtkWidget *) NULL;
  37     m_added = FALSE;
  38   }
  39
  40   // mark page as "added' to the notebook, return FALSE if the page was
  41   // already added
  42   bool Add()
  43   {
  44     if ( WasAdded() )
  45       return FALSE;
  46
  47     m_added = TRUE;
  48     return TRUE;
  49   }
  50
  51   bool WasAdded() const { return m_added; }
  52
  53   int                m_id;
  54   wxString           m_text;
  55   int                m_image;
  56   GtkNotebookPage   *m_page;
  57   GtkLabel          *m_label;
  58   wxWindow          *m_client;
  59   GtkNotebook       *m_parent;
  60   GtkWidget         *m_box;     // in which the label and image are packed
  61
  62 private:
  63   bool m_added;
  64 };
  65
  66 //-----------------------------------------------------------------------------
  67 // "switch_page"
  68 //-----------------------------------------------------------------------------
  69
  70 static void gtk_notebook_page_change_callback(GtkNotebook *WXUNUSED(widget),
  71                                               GtkNotebookPage *WXUNUSED(page),
  72                                               gint nPage,
  73                                               gpointer data)
  74 {
  75   wxNotebook *notebook = (wxNotebook *)data;
  76
  77   int old = notebook->GetSelection();
  78
  79   // TODO: emulate PAGE_CHANGING event
  80
  81   wxNotebookEvent event( wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED,
  82                          notebook->GetId(),  nPage, old );
  83   event.SetEventObject( notebook );
  84   notebook->GetEventHandler()->ProcessEvent( event );
  85 }
  86
  87 //-----------------------------------------------------------------------------
  88 // "size_allocate"
  89 //-----------------------------------------------------------------------------
  90
  91 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
  92 {
  93   if ((win->m_x == alloc->x) &&
  94       (win->m_y == alloc->y) &&
  95       (win->m_width == alloc->width) &&
  96       (win->m_height == alloc->height))
  97   {
  98     return;
  99   }
 100
 101   win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 102 }
 103
 104 //-----------------------------------------------------------------------------
 105 // InsertChild callback for wxNotebook
 106 //-----------------------------------------------------------------------------
 107
 108 static void wxInsertChildInNotebook( wxNotebook* parent, wxWindow* child )
 109 {
 110   wxNotebookPage *page = new wxNotebookPage();
 111
 112   page->m_id = parent->GetPageCount();
 113
 114   page->m_box = gtk_hbox_new (FALSE, 0);
 115   gtk_container_border_width(GTK_CONTAINER(page->m_box), 2);
 116
 117   GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 118
 119   page->m_client = child;
 120   gtk_notebook_append_page( notebook, child->m_widget, page->m_box );
 121
 122   page->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 123
 124   page->m_parent = notebook;
 125
 126   gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 127     GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 128
 129   if (!page->m_page)
 130   {
 131      wxLogFatalError( "Notebook page creation error" );
 132      return;
 133   }
 134
 135   parent->m_pages.Append( page );
 136 }
 137
 138 //-----------------------------------------------------------------------------
 139 // wxNotebook
 140 //-----------------------------------------------------------------------------
 141
 142 IMPLEMENT_DYNAMIC_CLASS(wxNotebook,wxControl)
 143
 144 void wxNotebook::Init()
 145 {
 146   m_imageList = (wxImageList *) NULL;
 147   m_pages.DeleteContents( TRUE );
 148   m_idHandler = 0;
 149 }
 150
 151 wxNotebook::wxNotebook()
 152 {
 153   Init();
 154 }
 155
 156 wxNotebook::wxNotebook( wxWindow *parent, wxWindowID id,
 157       const wxPoint& pos, const wxSize& size,
 158       long style, const wxString& name )
 159 {
 160   Init();
 161   Create( parent, id, pos, size, style, name );
 162 }
 163
 164 wxNotebook::~wxNotebook()
 165 {
 166   // don't generate change page events any more
 167   if (m_idHandler != 0)
 168     gtk_signal_disconnect(GTK_OBJECT(m_widget), m_idHandler);
 169
 170   DeleteAllPages();
 171 }
 172
 173 bool wxNotebook::Create(wxWindow *parent, wxWindowID id,
 174       const wxPoint& pos, const wxSize& size,
 175       long style, const wxString& name )
 176 {
 177   m_needParent = TRUE;
 178   m_insertCallback = (wxInsertChildFunction)wxInsertChildInNotebook;
 179
 180   PreCreation( parent, id, pos, size, style, name );
 181
 182   m_widget = gtk_notebook_new();
 183
 184   gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 185
 186   m_idHandler = gtk_signal_connect (
 187                   GTK_OBJECT(m_widget), "switch_page",
 188                   GTK_SIGNAL_FUNC(gtk_notebook_page_change_callback),
 189                   (gpointer)this );
 190
 191   m_parent->AddChild( this );
 192
 193   (m_parent->m_insertCallback)( m_parent, this );
 194
 195   PostCreation();
 196
 197   Show( TRUE );
 198
 199   return TRUE;
 200 }
 201
 202 int wxNotebook::GetSelection() const
 203 {
 204   wxCHECK_MSG( m_widget != NULL, -1, "invalid notebook" );
 205
 206   if (m_pages.Number() == 0) return -1;
 207
 208   GtkNotebookPage *g_page = GTK_NOTEBOOK(m_widget)->cur_page;
 209   if (!g_page) return -1;
 210
 211   wxNotebookPage *page = (wxNotebookPage *) NULL;
 212
 213   wxNode *node = m_pages.First();
 214   while (node)
 215   {
 216     page = (wxNotebookPage*)node->Data();
 217
 218     if ((page->m_page == g_page) || (page->m_page == (GtkNotebookPage*)NULL))
 219     {
 220         // page->m_page is NULL directly after gtk_notebook_append. gtk emits
 221         // "switch_page" then and we ask for GetSelection() in the handler for
 222         // "switch_page". otherwise m_page should never be NULL. all this
 223         // might also be wrong.
 224         break;
 225     }
 226     node = node->Next();
 227   }
 228
 229   wxCHECK_MSG( node != NULL, -1, "wxNotebook: no selection?" );
 230
 231   return page->m_id;
 232 }
 233
 234 int wxNotebook::GetPageCount() const
 235 {
 236   // count only the pages which were already added to the notebook for MSW
 237   // compatibility (and, in fact, this behaviour makes more sense anyhow
 238   // because only the added pages are shown)
 239   int n = 0;
 240   for ( wxNode *node = m_pages.First(); node; node = node->Next() )
 241   {
 242     wxNotebookPage *page = (wxNotebookPage*)node->Data();
 243     if ( page->WasAdded() )
 244         n++;
 245   }
 246
 247   return n;
 248 }
 249
 250 int wxNotebook::GetRowCount() const
 251 {
 252   return 1;
 253 }
 254
 255 wxString wxNotebook::GetPageText( int page ) const
 256 {
 257   wxCHECK_MSG( m_widget != NULL, "", "invalid notebook" );
 258
 259   wxNotebookPage* nb_page = GetNotebookPage(page);
 260   if (nb_page)
 261     return nb_page->m_text;
 262   else
 263     return "";
 264 }
 265
 266 int wxNotebook::GetPageImage( int page ) const
 267 {
 268   wxCHECK_MSG( m_widget != NULL, 0, "invalid notebook" );
 269
 270   wxNotebookPage* nb_page = GetNotebookPage(page);
 271   if (nb_page)
 272     return nb_page->m_image;
 273   else
 274     return 0;
 275 }
 276
 277 wxNotebookPage* wxNotebook::GetNotebookPage(int page) const
 278 {
 279   wxCHECK_MSG( m_widget != NULL, (wxNotebookPage*)NULL, "invalid notebook" );
 280
 281   wxNotebookPage *nb_page = (wxNotebookPage *) NULL;
 282
 283   wxNode *node = m_pages.First();
 284   while (node)
 285   {
 286     nb_page = (wxNotebookPage*)node->Data();
 287     if (nb_page->m_id == page)
 288       return nb_page;
 289     node = node->Next();
 290   }
 291
 292   wxLogDebug( "Notebook page %d not found!", page );
 293
 294   return (wxNotebookPage *) NULL;
 295 }
 296
 297 int wxNotebook::SetSelection( int page )
 298 {
 299   wxCHECK_MSG( m_widget != NULL, -1, "invalid notebook" );
 300
 301   int selOld = GetSelection();
 302   wxNotebookPage* nb_page = GetNotebookPage(page);
 303
 304   if (!nb_page) return -1;
 305
 306   int page_num = 0;
 307   GList *child = GTK_NOTEBOOK(m_widget)->children;
 308   while (child)
 309   {
 310     if (nb_page->m_page == (GtkNotebookPage*)child->data)  break;
 311     page_num++;
 312     child = child->next;
 313   }
 314
 315   if (!child) return -1;
 316
 317   gtk_notebook_set_page( GTK_NOTEBOOK(m_widget), page_num );
 318
 319   return selOld;
 320 }
 321
 322 void wxNotebook::AdvanceSelection( bool bForward )
 323 {
 324   wxCHECK_RET( m_widget != NULL, "invalid notebook" );
 325
 326   int sel = GetSelection();
 327   int max = GetPageCount();
 328
 329   if (bForward)
 330     SetSelection( sel == max ? 0 : sel + 1 );
 331   else
 332     SetSelection( sel == 0 ? max : sel - 1 );
 333 }
 334
 335 void wxNotebook::SetImageList( wxImageList* imageList )
 336 {
 337   m_imageList = imageList;
 338 }
 339
 340 bool wxNotebook::SetPageText( int page, const wxString &text )
 341 {
 342   wxCHECK_MSG( m_widget != NULL, FALSE, "invalid notebook" );
 343
 344   wxNotebookPage* nb_page = GetNotebookPage(page);
 345
 346   if (!nb_page) return FALSE;
 347
 348   nb_page->m_text = text;
 349
 350   return TRUE;
 351 }
 352
 353 bool wxNotebook::SetPageImage( int page, int image )
 354 {
 355   wxNotebookPage* nb_page = GetNotebookPage(page);
 356
 357   if (!nb_page) return FALSE;
 358
 359   nb_page->m_image = image;
 360
 361   return TRUE;
 362 }
 363
 364 void wxNotebook::SetPageSize( const wxSize &WXUNUSED(size) )
 365 {
 366   wxFAIL_MSG( "wxNotebook::SetPageSize not implemented" );
 367 }
 368
 369 void wxNotebook::SetPadding( const wxSize &WXUNUSED(padding) )
 370 {
 371   wxFAIL_MSG( "wxNotebook::SetPadding not implemented" );
 372 }
 373
 374 bool wxNotebook::DeleteAllPages()
 375 {
 376   wxCHECK_MSG( m_widget != NULL, FALSE, "invalid notebook" );
 377
 378   wxNode *page_node = m_pages.First();
 379   while (page_node)
 380   {
 381     wxNotebookPage *page = (wxNotebookPage*)page_node->Data();
 382
 383     DeletePage( page->m_id );
 384
 385     page_node = m_pages.First();
 386   }
 387
 388   return TRUE;
 389 }
 390
 391 bool wxNotebook::DeletePage( int page )
 392 {
 393   wxNotebookPage* nb_page = GetNotebookPage(page);
 394   if (!nb_page) return FALSE;
 395
 396   int page_num = 0;
 397   GList *child = GTK_NOTEBOOK(m_widget)->children;
 398   while (child)
 399   {
 400     if (nb_page->m_page == (GtkNotebookPage*)child->data) break;
 401     page_num++;
 402     child = child->next;
 403   }
 404
 405   wxCHECK_MSG( child != NULL, FALSE, "illegal notebook index" );
 406
 407   delete nb_page->m_client;
 408
 409   m_pages.DeleteObject( nb_page );
 410
 411   return TRUE;
 412 }
 413
 414 bool wxNotebook::RemovePage( int page )
 415 {
 416   wxNotebookPage* nb_page = GetNotebookPage(page);
 417   if (!nb_page) return FALSE;
 418
 419   int page_num = 0;
 420   GList *child = GTK_NOTEBOOK(m_widget)->children;
 421   while (child)
 422   {
 423     if (nb_page->m_page == (GtkNotebookPage*)child->data) break;
 424     page_num++;
 425     child = child->next;
 426   }
 427
 428   wxCHECK_MSG( child != NULL, FALSE, "illegal notebook index" );
 429
 430   gtk_notebook_remove_page( GTK_NOTEBOOK(m_widget), page_num );
 431
 432   m_pages.DeleteObject( nb_page );
 433
 434   return TRUE;
 435 }
 436
 437 bool wxNotebook::AddPage(wxWindow* win, const wxString& text,
 438                          bool bSelect, int imageId)
 439 {
 440   wxCHECK_MSG( m_widget != NULL, FALSE, "invalid notebook" );
 441
 442   // we've created the notebook page in AddChild(). Now we just have to set
 443   // the caption for the page and set the others parameters.
 444
 445   wxNotebookPage *page = (wxNotebookPage *) NULL;
 446
 447   wxNode *node = m_pages.First();
 448   while (node)
 449   {
 450     page = (wxNotebookPage*)node->Data();
 451     if ( page->m_client == win ) break;
 452     node = node->Next();
 453   }
 454
 455   wxCHECK_MSG( page != NULL, FALSE,
 456                "Can't add a page whose parent is not the notebook!" );
 457
 458   wxCHECK_MSG( page->Add(), FALSE,
 459                "Can't add the same page twice to a notebook." );
 460
 461   if (imageId != -1)
 462   {
 463     wxASSERT( m_imageList != NULL );
 464
 465     const wxBitmap *bmp = m_imageList->GetBitmap(imageId);
 466     GdkPixmap *pixmap = bmp->GetPixmap();
 467     GdkBitmap *mask = (GdkBitmap*) NULL;
 468     if ( bmp->GetMask() )
 469     {
 470       mask = bmp->GetMask()->GetBitmap();
 471     }
 472
 473     GtkWidget *pixmapwid = gtk_pixmap_new (pixmap, mask );
 474
 475     gtk_box_pack_start(GTK_BOX(page->m_box), pixmapwid, FALSE, FALSE, 3);
 476
 477     gtk_widget_show(pixmapwid);
 478   }
 479
 480   // then set the attributes
 481   page->m_text = text;
 482   if (page->m_text.IsEmpty()) page->m_text = "";
 483   page->m_image = imageId;
 484   page->m_label = (GtkLabel *)gtk_label_new(page->m_text);
 485   gtk_box_pack_start( GTK_BOX(page->m_box), (GtkWidget *)page->m_label, FALSE, FALSE, 3);
 486
 487   // @@@: what does this do? do we still need it?
 488   // gtk_misc_set_alignment(GTK_MISC(page->m_label), 0.0, 0.5);
 489
 490   gtk_widget_show((GtkWidget *)page->m_label);
 491
 492   if (bSelect) SetSelection(GetPageCount());
 493
 494   return TRUE;
 495 }
 496
 497 wxWindow *wxNotebook::GetPage( int page ) const
 498 {
 499   wxCHECK_MSG( m_widget != NULL, (wxWindow*) NULL, "invalid notebook" );
 500
 501   wxNotebookPage* nb_page = GetNotebookPage(page);
 502   if (!nb_page)
 503     return (wxWindow *) NULL;
 504   else
 505     return nb_page->m_client;
 506 }
 507
 508 // override these 2 functions to do nothing: everything is done in OnSize
 509 void wxNotebook::SetConstraintSizes( bool WXUNUSED(recurse) )
 510 {
 511   // don't set the sizes of the pages - their correct size is not yet known
 512   wxControl::SetConstraintSizes(FALSE);
 513 }
 514
 515 bool wxNotebook::DoPhase( int WXUNUSED(nPhase) )
 516 {
 517   return TRUE;
 518 }
 519
 520 void wxNotebook::ApplyWidgetStyle()
 521 {
 522   SetWidgetStyle();
 523   gtk_widget_set_style( m_widget, m_widgetStyle );
 524 }
 525
 526 //-----------------------------------------------------------------------------
 527 // wxNotebookEvent
 528 //-----------------------------------------------------------------------------
 529
 530 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxCommandEvent)
 531