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 #include "wx/notebook.h"
  19
  20 #if wxUSE_MDI
  21
  22 #include "wx/dialog.h"
  23 #include "wx/menu.h"
  24 #include "wx/intl.h"
  25 #include "wx/gtk/private.h"
  26
  27 #include <glib.h>
  28 #include <gdk/gdk.h>
  29 #include <gtk/gtk.h>
  30 #include "wx/gtk/win_gtk.h"
  31
  32 //-----------------------------------------------------------------------------
  33 // constants
  34 //-----------------------------------------------------------------------------
  35
  36 const int wxMENU_HEIGHT = 27;
  37
  38 //-----------------------------------------------------------------------------
  39 // idle system
  40 //-----------------------------------------------------------------------------
  41
  42 extern void wxapp_install_idle_handler();
  43 extern bool g_isIdle;
  44
  45 //-----------------------------------------------------------------------------
  46 // globals
  47 //-----------------------------------------------------------------------------
  48
  49 extern wxList wxPendingDelete;
  50
  51 //-----------------------------------------------------------------------------
  52 // "switch_page"
  53 //-----------------------------------------------------------------------------
  54
  55 static void
  56 gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
  57                               GtkNotebookPage *page,
  58                               gint WXUNUSED(page_num),
  59                               wxMDIParentFrame *parent )
  60 {
  61     if (g_isIdle)
  62         wxapp_install_idle_handler();
  63
  64     // send deactivate event to old child
  65
  66     wxMDIChildFrame *child = parent->GetActiveChild();
  67     if (child)
  68     {
  69         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
  70         event1.SetEventObject( child);
  71         child->GetEventHandler()->ProcessEvent( event1 );
  72     }
  73
  74     // send activate event to new child
  75
  76     wxMDIClientWindow *client_window = parent->GetClientWindow();
  77     if (!client_window)
  78         return;
  79
  80     child = (wxMDIChildFrame*) NULL;
  81
  82     wxWindowList::compatibility_iterator node = client_window->GetChildren().GetFirst();
  83     while (node)
  84     {
  85         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
  86         // CE: we come here in the destructor with a null child_frame - I think because
  87         // gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page", (see below)
  88         // isn't deleted early enough
  89         if (!child_frame)
  90           return ;
  91
  92         if (child_frame->m_page == page)
  93         {
  94             child = child_frame;
  95             break;
  96         }
  97         node = node->GetNext();
  98     }
  99
 100     if (!child)
 101          return;
 102
 103     wxActivateEvent event2( wxEVT_ACTIVATE, true, child->GetId() );
 104     event2.SetEventObject( child);
 105     child->GetEventHandler()->ProcessEvent( event2 );
 106 }
 107
 108 //-----------------------------------------------------------------------------
 109 // wxMDIParentFrame
 110 //-----------------------------------------------------------------------------
 111
 112 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 113
 114 void wxMDIParentFrame::Init()
 115 {
 116     m_justInserted = false;
 117     m_clientWindow = (wxMDIClientWindow *) NULL;
 118 }
 119
 120 wxMDIParentFrame::~wxMDIParentFrame()
 121 {
 122 }
 123
 124 bool wxMDIParentFrame::Create(wxWindow *parent,
 125                               wxWindowID id,
 126                               const wxString& title,
 127                               const wxPoint& pos,
 128                               const wxSize& size,
 129                               long style,
 130                               const wxString& name )
 131 {
 132     wxFrame::Create( parent, id, title, pos, size, style, name );
 133
 134     OnCreateClient();
 135
 136     return true;
 137 }
 138
 139 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 140 {
 141     wxFrame::GtkOnSize( x, y, width, height );
 142
 143     wxMDIChildFrame *child_frame = GetActiveChild();
 144     if (!child_frame) return;
 145
 146     wxMenuBar *menu_bar = child_frame->m_menuBar;
 147     if (!menu_bar) return;
 148     if (!menu_bar->m_widget) return;
 149
 150     menu_bar->m_x = 0;
 151     menu_bar->m_y = 0;
 152     menu_bar->m_width = m_width;
 153     menu_bar->m_height = wxMENU_HEIGHT;
 154     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 155                           menu_bar->m_widget,
 156                           0, 0, m_width, wxMENU_HEIGHT );
 157 }
 158
 159 void wxMDIParentFrame::OnInternalIdle()
 160 {
 161     /* if a an MDI child window has just been inserted
 162        it has to be brought to the top in idle time. we
 163        simply set the last notebook page active as new
 164        pages can only be appended at the end */
 165
 166     if (m_justInserted)
 167     {
 168         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 169         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 170
 171     /* need to set the menubar of the child */
 172         wxMDIChildFrame *active_child_frame = GetActiveChild();
 173         wxMenuBar *menu_bar = active_child_frame->m_menuBar;
 174         menu_bar->m_width = m_width;
 175         menu_bar->m_height = wxMENU_HEIGHT;
 176         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 177                             menu_bar->m_widget,
 178                             0, 0, m_width, wxMENU_HEIGHT );
 179         menu_bar->SetInvokingWindow(active_child_frame);
 180
 181         m_justInserted = false;
 182         return;
 183     }
 184
 185     wxFrame::OnInternalIdle();
 186
 187     wxMDIChildFrame *active_child_frame = GetActiveChild();
 188     bool visible_child_menu = false;
 189
 190     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 191     while (node)
 192     {
 193         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 194
 195         if ( child_frame )
 196         {
 197             wxMenuBar *menu_bar = child_frame->m_menuBar;
 198             if ( menu_bar )
 199             {
 200                 if (child_frame == active_child_frame)
 201                 {
 202                     if (menu_bar->Show(true))
 203                     {
 204                         menu_bar->m_width = m_width;
 205                         menu_bar->m_height = wxMENU_HEIGHT;
 206                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 207                                             menu_bar->m_widget,
 208                                             0, 0, m_width, wxMENU_HEIGHT );
 209                         menu_bar->SetInvokingWindow( child_frame );
 210                     }
 211                     visible_child_menu = true;
 212                 }
 213                 else
 214                 {
 215                     if (menu_bar->Show(false))
 216                     {
 217                         menu_bar->UnsetInvokingWindow( child_frame );
 218                     }
 219                 }
 220             }
 221         }
 222
 223         node = node->GetNext();
 224     }
 225
 226     /* show/hide parent menu bar as required */
 227     if ((m_frameMenuBar) &&
 228         (m_frameMenuBar->IsShown() == visible_child_menu))
 229     {
 230         if (visible_child_menu)
 231         {
 232             m_frameMenuBar->Show( false );
 233             m_frameMenuBar->UnsetInvokingWindow( this );
 234         }
 235         else
 236         {
 237             m_frameMenuBar->Show( true );
 238             m_frameMenuBar->SetInvokingWindow( this );
 239
 240             m_frameMenuBar->m_width = m_width;
 241             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 242             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 243                                 m_frameMenuBar->m_widget,
 244                                 0, 0, m_width, wxMENU_HEIGHT );
 245         }
 246     }
 247 }
 248
 249 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 250 {
 251     wxFrame::DoGetClientSize( width, height );
 252 }
 253
 254 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 255 {
 256     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 257
 258     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 259     if (!notebook) return (wxMDIChildFrame*) NULL;
 260
 261     gint i = gtk_notebook_get_current_page( notebook );
 262     if (i < 0) return (wxMDIChildFrame*) NULL;
 263
 264     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 265     if (!page) return (wxMDIChildFrame*) NULL;
 266
 267     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 268     while (node)
 269     {
 270         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 271
 272         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
 273
 274         if (child_frame->m_page == page)
 275             return child_frame;
 276         node = node->GetNext();
 277     }
 278
 279     return (wxMDIChildFrame*) NULL;
 280 }
 281
 282 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 283 {
 284     return m_clientWindow;
 285 }
 286
 287 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 288 {
 289     m_clientWindow = new wxMDIClientWindow( this );
 290     return m_clientWindow;
 291 }
 292
 293 void wxMDIParentFrame::ActivateNext()
 294 {
 295     if (m_clientWindow)
 296       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 297 }
 298
 299 void wxMDIParentFrame::ActivatePrevious()
 300 {
 301     if (m_clientWindow)
 302       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 303 }
 304
 305 //-----------------------------------------------------------------------------
 306 // wxMDIChildFrame
 307 //-----------------------------------------------------------------------------
 308
 309 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 310
 311 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 312     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 313     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 314 END_EVENT_TABLE()
 315
 316 wxMDIChildFrame::wxMDIChildFrame()
 317 {
 318     m_menuBar = (wxMenuBar *) NULL;
 319     m_page = (GtkNotebookPage *) NULL;
 320 }
 321
 322 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 323       wxWindowID id, const wxString& title,
 324       const wxPoint& WXUNUSED(pos), const wxSize& size,
 325       long style, const wxString& name )
 326 {
 327     m_menuBar = (wxMenuBar *) NULL;
 328     m_page = (GtkNotebookPage *) NULL;
 329     Create( parent, id, title, wxDefaultPosition, size, style, name );
 330 }
 331
 332 wxMDIChildFrame::~wxMDIChildFrame()
 333 {
 334     if (m_menuBar)
 335         delete m_menuBar;
 336 }
 337
 338 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 339       wxWindowID id, const wxString& title,
 340       const wxPoint& WXUNUSED(pos), const wxSize& size,
 341       long style, const wxString& name )
 342 {
 343     m_title = title;
 344
 345     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 346 }
 347
 348 void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 349 {
 350     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 351 }
 352
 353 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 354 {
 355     wxWindow::DoSetClientSize( width, height );
 356 }
 357
 358 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 359 {
 360     wxWindow::DoGetClientSize( width, height );
 361 }
 362
 363 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 364 {
 365     wxWindow::AddChild(child);
 366 }
 367
 368 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 369 {
 370     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 371
 372     m_menuBar = menu_bar;
 373
 374     if (m_menuBar)
 375     {
 376         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 377
 378         m_menuBar->SetParent( mdi_frame );
 379
 380         /* insert the invisible menu bar into the _parent_ mdi frame */
 381         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 382                          m_menuBar->m_widget,
 383                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 384     }
 385 }
 386
 387 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 388 {
 389     return m_menuBar;
 390 }
 391
 392 void wxMDIChildFrame::Activate()
 393 {
 394     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 395     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 396     gint pageno = gtk_notebook_page_num( notebook, m_widget );
 397     gtk_notebook_set_page( notebook, pageno );
 398 }
 399
 400 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 401 {
 402 }
 403
 404 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 405 {
 406 #if wxUSE_STATUSBAR
 407     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 408     if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
 409     {
 410         // we don't have any help text for this item, but may be the MDI frame
 411         // does?
 412         mdi_frame->OnMenuHighlight(event);
 413     }
 414 #endif // wxUSE_STATUSBAR
 415 }
 416
 417 void wxMDIChildFrame::SetTitle( const wxString &title )
 418 {
 419     if ( title == m_title )
 420         return;
 421
 422     m_title = title;
 423
 424     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 425     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 426     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 427 }
 428
 429 //-----------------------------------------------------------------------------
 430 // "size_allocate"
 431 //-----------------------------------------------------------------------------
 432
 433 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 434 {
 435     if (g_isIdle) wxapp_install_idle_handler();
 436
 437     if ((win->m_x == alloc->x) &&
 438         (win->m_y == alloc->y) &&
 439         (win->m_width == alloc->width) &&
 440         (win->m_height == alloc->height) &&
 441         (win->m_sizeSet))
 442     {
 443         return;
 444     }
 445
 446     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 447 }
 448
 449 //-----------------------------------------------------------------------------
 450 // InsertChild callback for wxMDIClientWindow
 451 //-----------------------------------------------------------------------------
 452
 453 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 454 {
 455     wxString s = child->m_title;
 456     if (s.IsNull()) s = _("MDI child");
 457
 458     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 459     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 460
 461     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 462       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 463
 464     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 465
 466     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 467
 468     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 469
 470     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 471     parent_frame->m_justInserted = true;
 472 }
 473
 474 //-----------------------------------------------------------------------------
 475 // wxMDIClientWindow
 476 //-----------------------------------------------------------------------------
 477
 478 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 479
 480 wxMDIClientWindow::wxMDIClientWindow()
 481 {
 482 }
 483
 484 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 485 {
 486     CreateClient( parent, style );
 487 }
 488
 489 wxMDIClientWindow::~wxMDIClientWindow()
 490 {
 491
 492 }
 493
 494 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 495 {
 496     m_needParent = true;
 497
 498     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 499
 500     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 501         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 502     {
 503         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 504         return false;
 505     }
 506
 507     m_widget = gtk_notebook_new();
 508
 509     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 510       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 511
 512     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 513
 514     m_parent->DoAddChild( this );
 515
 516     PostCreation();
 517
 518     Show( true );
 519
 520     return true;
 521 }
 522
 523 #endif