src/gtk/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        mdi.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "mdi.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/mdi.h"
  18
  19 #if wxUSE_MDI
  20
  21 #include "wx/dialog.h"
  22 #include "wx/menu.h"
  23 #include "wx/intl.h"
  24 #include "wx/gtk/private.h"
  25
  26 #include <glib.h>
  27 #include <gdk/gdk.h>
  28 #include <gtk/gtk.h>
  29 #include "wx/gtk/win_gtk.h"
  30
  31 //-----------------------------------------------------------------------------
  32 // constants
  33 //-----------------------------------------------------------------------------
  34
  35 const int wxMENU_HEIGHT = 27;
  36
  37 //-----------------------------------------------------------------------------
  38 // idle system
  39 //-----------------------------------------------------------------------------
  40
  41 extern void wxapp_install_idle_handler();
  42 extern bool g_isIdle;
  43
  44 //-----------------------------------------------------------------------------
  45 // globals
  46 //-----------------------------------------------------------------------------
  47
  48 extern wxList wxPendingDelete;
  49
  50 //-----------------------------------------------------------------------------
  51 // "switch_page"
  52 //-----------------------------------------------------------------------------
  53
  54 static void
  55 gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
  56                               GtkNotebookPage *page,
  57                               gint WXUNUSED(page_num),
  58                               wxMDIParentFrame *parent )
  59 {
  60     if (g_isIdle)
  61         wxapp_install_idle_handler();
  62
  63     // send deactivate event to old child
  64
  65     wxMDIChildFrame *child = parent->GetActiveChild();
  66     if (child)
  67     {
  68         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
  69         event1.SetEventObject( child);
  70         child->GetEventHandler()->ProcessEvent( event1 );
  71     }
  72
  73     // send activate event to new child
  74
  75     wxMDIClientWindow *client_window = parent->GetClientWindow();
  76     if (!client_window)
  77         return;
  78
  79     child = (wxMDIChildFrame*) NULL;
  80
  81     wxWindowList::compatibility_iterator node = client_window->GetChildren().GetFirst();
  82     while (node)
  83     {
  84         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
  85
  86         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
  87
  88         if (child_frame->m_page == page)
  89         {
  90             child = child_frame;
  91             break;
  92         }
  93         node = node->GetNext();
  94     }
  95
  96     if (!child)
  97          return;
  98
  99     wxActivateEvent event2( wxEVT_ACTIVATE, true, child->GetId() );
 100     event2.SetEventObject( child);
 101     child->GetEventHandler()->ProcessEvent( event2 );
 102 }
 103
 104 //-----------------------------------------------------------------------------
 105 // wxMDIParentFrame
 106 //-----------------------------------------------------------------------------
 107
 108 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 109
 110 void wxMDIParentFrame::Init()
 111 {
 112     m_justInserted = false;
 113     m_clientWindow = (wxMDIClientWindow *) NULL;
 114 }
 115
 116 wxMDIParentFrame::~wxMDIParentFrame()
 117 {
 118 }
 119
 120 bool wxMDIParentFrame::Create(wxWindow *parent,
 121                               wxWindowID id,
 122                               const wxString& title,
 123                               const wxPoint& pos,
 124                               const wxSize& size,
 125                               long style,
 126                               const wxString& name )
 127 {
 128     wxFrame::Create( parent, id, title, pos, size, style, name );
 129
 130     OnCreateClient();
 131
 132     return true;
 133 }
 134
 135 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 136 {
 137     wxFrame::GtkOnSize( x, y, width, height );
 138
 139     wxMDIChildFrame *child_frame = GetActiveChild();
 140     if (!child_frame) return;
 141
 142     wxMenuBar *menu_bar = child_frame->m_menuBar;
 143     if (!menu_bar) return;
 144     if (!menu_bar->m_widget) return;
 145
 146     menu_bar->m_x = 0;
 147     menu_bar->m_y = 0;
 148     menu_bar->m_width = m_width;
 149     menu_bar->m_height = wxMENU_HEIGHT;
 150     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 151                           menu_bar->m_widget,
 152                           0, 0, m_width, wxMENU_HEIGHT );
 153 }
 154
 155 void wxMDIParentFrame::OnInternalIdle()
 156 {
 157     /* if a an MDI child window has just been inserted
 158        it has to be brought to the top in idle time. we
 159        simply set the last notebook page active as new
 160        pages can only be appended at the end */
 161
 162     if (m_justInserted)
 163     {
 164         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 165         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 166
 167         m_justInserted = false;
 168         return;
 169     }
 170
 171     wxFrame::OnInternalIdle();
 172
 173     wxMDIChildFrame *active_child_frame = GetActiveChild();
 174     bool visible_child_menu = false;
 175
 176     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 177     while (node)
 178     {
 179         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 180
 181         if ( child_frame )
 182         {
 183             wxMenuBar *menu_bar = child_frame->m_menuBar;
 184             if ( menu_bar )
 185             {
 186                 if (child_frame == active_child_frame)
 187                 {
 188                     if (menu_bar->Show(true))
 189                     {
 190                         menu_bar->m_width = m_width;
 191                         menu_bar->m_height = wxMENU_HEIGHT;
 192                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 193                                             menu_bar->m_widget,
 194                                             0, 0, m_width, wxMENU_HEIGHT );
 195                         menu_bar->SetInvokingWindow( child_frame );
 196                     }
 197                     visible_child_menu = true;
 198                 }
 199                 else
 200                 {
 201                     if (menu_bar->Show(false))
 202                     {
 203                         menu_bar->UnsetInvokingWindow( child_frame );
 204                     }
 205                 }
 206             }
 207         }
 208
 209         node = node->GetNext();
 210     }
 211
 212     /* show/hide parent menu bar as required */
 213     if ((m_frameMenuBar) &&
 214         (m_frameMenuBar->IsShown() == visible_child_menu))
 215     {
 216         if (visible_child_menu)
 217         {
 218             m_frameMenuBar->Show( false );
 219             m_frameMenuBar->UnsetInvokingWindow( this );
 220         }
 221         else
 222         {
 223             m_frameMenuBar->Show( true );
 224             m_frameMenuBar->SetInvokingWindow( this );
 225
 226             m_frameMenuBar->m_width = m_width;
 227             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 228             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 229                                 m_frameMenuBar->m_widget,
 230                                 0, 0, m_width, wxMENU_HEIGHT );
 231         }
 232     }
 233 }
 234
 235 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 236 {
 237     wxFrame::DoGetClientSize( width, height );
 238 }
 239
 240 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 241 {
 242     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 243
 244     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 245     if (!notebook) return (wxMDIChildFrame*) NULL;
 246
 247     gint i = gtk_notebook_get_current_page( notebook );
 248     if (i < 0) return (wxMDIChildFrame*) NULL;
 249
 250     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 251     if (!page) return (wxMDIChildFrame*) NULL;
 252
 253     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 254     while (node)
 255     {
 256         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 257
 258         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
 259
 260         if (child_frame->m_page == page)
 261             return child_frame;
 262         node = node->GetNext();
 263     }
 264
 265     return (wxMDIChildFrame*) NULL;
 266 }
 267
 268 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 269 {
 270     return m_clientWindow;
 271 }
 272
 273 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 274 {
 275     m_clientWindow = new wxMDIClientWindow( this );
 276     return m_clientWindow;
 277 }
 278
 279 void wxMDIParentFrame::ActivateNext()
 280 {
 281     if (m_clientWindow)
 282       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 283 }
 284
 285 void wxMDIParentFrame::ActivatePrevious()
 286 {
 287     if (m_clientWindow)
 288       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 289 }
 290
 291 //-----------------------------------------------------------------------------
 292 // wxMDIChildFrame
 293 //-----------------------------------------------------------------------------
 294
 295 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 296
 297 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 298     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 299     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 300 END_EVENT_TABLE()
 301
 302 wxMDIChildFrame::wxMDIChildFrame()
 303 {
 304     m_menuBar = (wxMenuBar *) NULL;
 305     m_page = (GtkNotebookPage *) NULL;
 306 }
 307
 308 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 309       wxWindowID id, const wxString& title,
 310       const wxPoint& WXUNUSED(pos), const wxSize& size,
 311       long style, const wxString& name )
 312 {
 313     m_menuBar = (wxMenuBar *) NULL;
 314     m_page = (GtkNotebookPage *) NULL;
 315     Create( parent, id, title, wxDefaultPosition, size, style, name );
 316 }
 317
 318 wxMDIChildFrame::~wxMDIChildFrame()
 319 {
 320     if (m_menuBar)
 321         delete m_menuBar;
 322 }
 323
 324 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 325       wxWindowID id, const wxString& title,
 326       const wxPoint& WXUNUSED(pos), const wxSize& size,
 327       long style, const wxString& name )
 328 {
 329     m_title = title;
 330
 331     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 332 }
 333
 334 void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 335 {
 336     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 337 }
 338
 339 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 340 {
 341     wxWindow::DoSetClientSize( width, height );
 342 }
 343
 344 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 345 {
 346     wxWindow::DoGetClientSize( width, height );
 347 }
 348
 349 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 350 {
 351     wxWindow::AddChild(child);
 352 }
 353
 354 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 355 {
 356     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 357
 358     m_menuBar = menu_bar;
 359
 360     if (m_menuBar)
 361     {
 362         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 363
 364         m_menuBar->SetParent( mdi_frame );
 365
 366         /* insert the invisible menu bar into the _parent_ mdi frame */
 367         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 368                          m_menuBar->m_widget,
 369                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 370     }
 371 }
 372
 373 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 374 {
 375     return m_menuBar;
 376 }
 377
 378 void wxMDIChildFrame::Activate()
 379 {
 380     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 381     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 382     gint pageno = gtk_notebook_page_num( notebook, m_widget );
 383     gtk_notebook_set_page( notebook, pageno );
 384 }
 385
 386 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 387 {
 388 }
 389
 390 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 391 {
 392 #if wxUSE_STATUSBAR
 393     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 394     if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
 395     {
 396         // we don't have any help text for this item, but may be the MDI frame
 397         // does?
 398         mdi_frame->OnMenuHighlight(event);
 399     }
 400 #endif // wxUSE_STATUSBAR
 401 }
 402
 403 void wxMDIChildFrame::SetTitle( const wxString &title )
 404 {
 405     if ( title == m_title )
 406         return;
 407
 408     m_title = title;
 409
 410     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 411     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 412     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 413 }
 414
 415 //-----------------------------------------------------------------------------
 416 // "size_allocate"
 417 //-----------------------------------------------------------------------------
 418
 419 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 420 {
 421     if (g_isIdle) wxapp_install_idle_handler();
 422
 423     if ((win->m_x == alloc->x) &&
 424         (win->m_y == alloc->y) &&
 425         (win->m_width == alloc->width) &&
 426         (win->m_height == alloc->height) &&
 427         (win->m_sizeSet))
 428     {
 429         return;
 430     }
 431
 432     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 433 }
 434
 435 //-----------------------------------------------------------------------------
 436 // InsertChild callback for wxMDIClientWindow
 437 //-----------------------------------------------------------------------------
 438
 439 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 440 {
 441     wxString s = child->m_title;
 442     if (s.IsNull()) s = _("MDI child");
 443
 444     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 445     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 446
 447     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 448       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 449
 450     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 451
 452     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 453
 454     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 455
 456     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 457     parent_frame->m_justInserted = true;
 458 }
 459
 460 //-----------------------------------------------------------------------------
 461 // wxMDIClientWindow
 462 //-----------------------------------------------------------------------------
 463
 464 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 465
 466 wxMDIClientWindow::wxMDIClientWindow()
 467 {
 468 }
 469
 470 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 471 {
 472     CreateClient( parent, style );
 473 }
 474
 475 wxMDIClientWindow::~wxMDIClientWindow()
 476 {
 477 }
 478
 479 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 480 {
 481     m_needParent = true;
 482
 483     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 484
 485     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 486         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 487     {
 488         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 489         return false;
 490     }
 491
 492     m_widget = gtk_notebook_new();
 493
 494     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 495       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 496
 497     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 498
 499     m_parent->DoAddChild( this );
 500
 501     PostCreation();
 502
 503     Show( true );
 504
 505     return true;
 506 }
 507
 508 #endif