src/gtk/notebook.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        notebook.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Id:
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "notebook.h"
  13 #endif
  14
  15 #include "wx/notebook.h"
  16 #include "wx/panel.h"
  17 #include "wx/utils.h"
  18 #include "wx/imaglist.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 = NULL;
  34     m_client = NULL;
  35     m_parent = NULL;
  36   };
  37
  38 //private:
  39   int                m_id;
  40   wxString           m_text;
  41   int                m_image;
  42   GtkNotebookPage   *m_page;
  43   GtkLabel          *m_label;
  44   wxWindow          *m_client;
  45   GtkNotebook       *m_parent;
  46 };
  47
  48 //-----------------------------------------------------------------------------
  49 // GTK callbacks
  50 //-----------------------------------------------------------------------------
  51
  52 // page change callback
  53 static void gtk_notebook_page_change_callback(GtkNotebook *WXUNUSED(widget),
  54                                               GtkNotebookPage *WXUNUSED(page),
  55                                               gint nPage,
  56                                               gpointer data)
  57 {
  58   wxNotebook *notebook = (wxNotebook *)data;
  59
  60   int nOld = notebook->GetSelection();
  61
  62   // TODO: emulate PAGE_CHANGING event
  63   wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED,
  64                         notebook->GetId(),
  65                         nPage,
  66                         nOld);
  67   event.SetEventObject(notebook);
  68   notebook->ProcessEvent(event);
  69 }
  70
  71 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
  72 {
  73   if ( win->GetAutoLayout() )
  74     win->Layout();
  75
  76   if ((win->m_x == alloc->x) &&
  77       (win->m_y == alloc->y) &&
  78       (win->m_width == alloc->width) &&
  79       (win->m_height == alloc->height))
  80   {
  81     return;
  82   };
  83
  84 /*
  85   printf( "OnResize from " );
  86   if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
  87     printf( win->GetClassInfo()->GetClassName() );
  88   printf( " .\n" );
  89
  90   printf( "  Old: X: %d  Y: %d ", win->m_x, win->m_y );
  91   printf( "  W: %d  H: %d ", win->m_width, win->m_height );
  92   printf( " .\n" );
  93
  94   printf( "  New: X: %d  Y: %d ", alloc->x, alloc->y );
  95   printf( "  W: %d  H: %d ", alloc->width, alloc->height );
  96   printf( " .\n" );
  97 */
  98
  99   win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 100
 101 /*
 102   printf( "  Res: X: %d  Y: %d ", win->m_x, win->m_y );
 103   printf( "  W: %d  H: %d ", win->m_width, win->m_height );
 104   printf( " .\n" );
 105 */
 106 };
 107
 108 //-----------------------------------------------------------------------------
 109 // wxNotebook
 110 //-----------------------------------------------------------------------------
 111
 112 BEGIN_EVENT_TABLE(wxNotebook, wxControl)
 113   EVT_SIZE(wxNotebook::OnSize)
 114 END_EVENT_TABLE()
 115
 116 IMPLEMENT_DYNAMIC_CLASS(wxNotebook,wxControl)
 117
 118 void wxNotebook::Init()
 119 {
 120   m_imageList = NULL;
 121   m_pages.DeleteContents( TRUE );
 122   m_idHandler = 0;
 123 }
 124
 125 wxNotebook::wxNotebook()
 126 {
 127   Init();
 128 };
 129
 130 wxNotebook::wxNotebook( wxWindow *parent, wxWindowID id,
 131       const wxPoint& pos, const wxSize& size,
 132       long style, const wxString& name )
 133 {
 134   Init();
 135   Create( parent, id, pos, size, style, name );
 136 };
 137
 138 wxNotebook::~wxNotebook()
 139 {
 140   // don't generate change page events any more
 141   if ( m_idHandler != 0 )
 142     gtk_signal_disconnect(GTK_OBJECT(m_widget), m_idHandler);
 143
 144   DeleteAllPages();
 145 };
 146
 147 bool wxNotebook::Create(wxWindow *parent, wxWindowID id,
 148       const wxPoint& pos, const wxSize& size,
 149       long style, const wxString& name )
 150 {
 151   m_needParent = TRUE;
 152
 153   PreCreation( parent, id, pos, size, style, name );
 154
 155   m_widget = gtk_notebook_new();
 156
 157   gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 158
 159   m_idHandler = gtk_signal_connect
 160                 (
 161                   GTK_OBJECT(m_widget), "switch_page",
 162                   GTK_SIGNAL_FUNC(gtk_notebook_page_change_callback),
 163                   (gpointer)this
 164                 );
 165
 166   PostCreation();
 167
 168   Show( TRUE );
 169
 170   return TRUE;
 171 };
 172
 173 int wxNotebook::GetSelection() const
 174 {
 175   if (m_pages.Number() == 0)
 176     return -1;
 177
 178   GtkNotebookPage *g_page = GTK_NOTEBOOK(m_widget)->cur_page;
 179
 180   wxNotebookPage *page = NULL;
 181
 182   wxNode *node = m_pages.First();
 183   while (node)
 184   {
 185     page = (wxNotebookPage*)node->Data();
 186     if (page->m_page == g_page)
 187       break;
 188     node = node->Next();
 189   };
 190
 191   wxCHECK_MSG( node != NULL, -1, "wxNotebook: no selection?");
 192
 193   return page->m_id;
 194 };
 195
 196 int wxNotebook::GetPageCount() const
 197 {
 198   return m_pages.Number();
 199 };
 200
 201 int wxNotebook::GetRowCount() const
 202 {
 203   return 1;
 204 };
 205
 206 wxString wxNotebook::GetPageText( int page ) const
 207 {
 208   wxNotebookPage* nb_page = GetNotebookPage(page);
 209   if (nb_page)
 210     return nb_page->m_text;
 211   else
 212     return "";
 213 };
 214
 215 int wxNotebook::GetPageImage( int page ) const
 216 {
 217   wxNotebookPage* nb_page = GetNotebookPage(page);
 218   if (nb_page)
 219     return nb_page->m_image;
 220   else
 221     return 0;
 222 };
 223
 224 wxNotebookPage* wxNotebook::GetNotebookPage(int page) const
 225 {
 226   wxNotebookPage *nb_page = NULL;
 227
 228   wxNode *node = m_pages.First();
 229   while (node)
 230   {
 231     nb_page = (wxNotebookPage*)node->Data();
 232     if (nb_page->m_id == page)
 233       return nb_page;
 234     node = node->Next();
 235   };
 236
 237   wxLogDebug( "Notebook page %d not found!", page );
 238
 239   return NULL;
 240 };
 241
 242 int wxNotebook::SetSelection( int page )
 243 {
 244   int selOld = GetSelection();
 245   wxNotebookPage* nb_page = GetNotebookPage(page);
 246   if (!nb_page)
 247     return -1;
 248
 249   int page_num = 0;
 250   GList *child = GTK_NOTEBOOK(m_widget)->children;
 251   while (child)
 252   {
 253     if (nb_page->m_page == (GtkNotebookPage*)child->data)
 254       break;
 255     page_num++;
 256     child = child->next;
 257   };
 258
 259   if (!child) return -1;
 260
 261   gtk_notebook_set_page( GTK_NOTEBOOK(m_widget), page_num );
 262
 263   return selOld;
 264 };
 265
 266 void wxNotebook::AdvanceSelection(bool bForward)
 267 {
 268   int nSel = GetSelection(),
 269       nMax = GetPageCount();
 270
 271   if ( bForward ) {
 272     SetSelection(nSel == nMax ? 0 : nSel + 1);
 273   }
 274   else {
 275     SetSelection(nSel == 0 ? nMax : nSel - 1);
 276   }
 277 }
 278
 279 void wxNotebook::SetImageList( wxImageList* imageList )
 280 {
 281   m_imageList = imageList;
 282 };
 283
 284 bool wxNotebook::SetPageText( int page, const wxString &text )
 285 {
 286   wxNotebookPage* nb_page = GetNotebookPage(page);
 287   if (!nb_page)
 288     return FALSE;
 289
 290   nb_page->m_text = text;
 291
 292   return TRUE;
 293 };
 294
 295 bool wxNotebook::SetPageImage( int page, int image )
 296 {
 297   wxNotebookPage* nb_page = GetNotebookPage(page);
 298   if (!nb_page)
 299     return FALSE;
 300
 301   nb_page->m_image = image;
 302
 303   return TRUE;
 304 };
 305
 306 void wxNotebook::SetPageSize( const wxSize &WXUNUSED(size) )
 307 {
 308   wxFAIL_MSG("wxNotebook::SetPageSize not implemented");
 309 };
 310
 311 void wxNotebook::SetPadding( const wxSize &WXUNUSED(padding) )
 312 {
 313   wxFAIL_MSG("wxNotebook::SetPadding not implemented");
 314 };
 315
 316 bool wxNotebook::DeleteAllPages()
 317 {
 318   wxNode *page_node = m_pages.First();
 319   while (page_node)
 320   {
 321     wxNotebookPage *page = (wxNotebookPage*)page_node->Data();
 322
 323     DeletePage( page->m_id );
 324
 325     page_node = m_pages.First();
 326   };
 327
 328   return TRUE;
 329 };
 330
 331 bool wxNotebook::DeletePage( int page )
 332 {
 333   wxNotebookPage* nb_page = GetNotebookPage(page);
 334   if (!nb_page) return FALSE;
 335
 336   int page_num = 0;
 337   GList *child = GTK_NOTEBOOK(m_widget)->children;
 338   while (child)
 339   {
 340     if (nb_page->m_page == (GtkNotebookPage*)child->data) break;
 341     page_num++;
 342     child = child->next;
 343   };
 344
 345   wxASSERT( child );
 346
 347   delete nb_page->m_client;
 348
 349 //  Amazingly, this is not necessary
 350 //  gtk_notebook_remove_page( GTK_NOTEBOOK(m_widget), page_num );
 351
 352   m_pages.DeleteObject( nb_page );
 353
 354   return TRUE;
 355 };
 356
 357 bool wxNotebook::AddPage(wxWindow* win, const wxString& text,
 358                          bool bSelect, int imageId)
 359 {
 360   // we've created the notebook page in AddChild(). Now we just have to set
 361   // the caption for the page and set the others parameters.
 362
 363   // first, find the page
 364   wxNotebookPage *page = NULL;
 365
 366   wxNode *node = m_pages.First();
 367   while (node)
 368   {
 369     page = (wxNotebookPage*)node->Data();
 370     if ( page->m_client == win )
 371       break; // found
 372     node = node->Next();
 373   };
 374
 375   wxCHECK_MSG(page != NULL, FALSE,
 376               "Can't add a page whose parent is not the notebook!");
 377
 378   // then set the attributes
 379   page->m_text = text;
 380   if ( page->m_text.IsEmpty() )
 381     page->m_text = "";
 382   page->m_image = imageId;
 383   gtk_label_set(page->m_label, page->m_text);
 384
 385   if ( bSelect ) {
 386     SetSelection(GetPageCount());
 387   }
 388
 389   return TRUE;
 390 };
 391
 392 wxWindow *wxNotebook::GetPage( int page ) const
 393 {
 394   wxNotebookPage* nb_page = GetNotebookPage(page);
 395   if (!nb_page)
 396     return NULL;
 397   else
 398     return nb_page->m_client;
 399 };
 400
 401 void wxNotebook::AddChild( wxWindow *win )
 402 {
 403   // @@@ normally done in wxWindow::AddChild but for some reason wxNotebook
 404   // case is special there (Robert?)
 405   // Robert: Don't you think the code below looks different from the one
 406   // in wxWindow::AddChild :-)
 407
 408   m_children.Append(win);
 409
 410   wxNotebookPage *page = new wxNotebookPage();
 411
 412   page->m_id = GetPageCount();
 413   page->m_label = (GtkLabel *)gtk_label_new("Handle");
 414   page->m_client = win;
 415   gtk_notebook_append_page( GTK_NOTEBOOK(m_widget), win->m_widget,
 416                             (GtkWidget *)page->m_label);
 417   gtk_misc_set_alignment(GTK_MISC(page->m_label), 0.0, 0.5);
 418
 419   page->m_page =
 420     (GtkNotebookPage*) (g_list_last(GTK_NOTEBOOK(m_widget)->children)->data);
 421
 422   page->m_parent = GTK_NOTEBOOK(m_widget);
 423
 424   gtk_signal_connect( GTK_OBJECT(win->m_widget), "size_allocate",
 425     GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)win );
 426
 427   if (!page->m_page)
 428   {
 429      wxLogFatalError( "Notebook page creation error" );
 430      return;
 431   }
 432
 433   m_pages.Append( page );
 434 };
 435
 436 // override these 2 functions to do nothing: everything is done in OnSize
 437 void wxNotebook::SetConstraintSizes(bool /* recurse */)
 438 {
 439   // don't set the sizes of the pages - their correct size is not yet known
 440   wxControl::SetConstraintSizes(FALSE);
 441 }
 442
 443 bool wxNotebook::DoPhase(int /* nPhase */)
 444 {
 445   return TRUE;
 446 }
 447
 448 //-----------------------------------------------------------------------------
 449 // wxNotebookEvent
 450 //-----------------------------------------------------------------------------
 451
 452 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxCommandEvent)