src/gtk1/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/mdi.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_MDI
  14
  15 #include "wx/mdi.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19     #include "wx/menu.h"
  20     #include "wx/dialog.h"
  21 #endif
  22
  23 #include "wx/notebook.h"
  24 #include "wx/gtk1/private.h"
  25
  26 #include <glib.h>
  27 #include <gdk/gdk.h>
  28 #include <gtk/gtk.h>
  29 #include "wx/gtk1/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 //-----------------------------------------------------------------------------
  49 // "switch_page"
  50 //-----------------------------------------------------------------------------
  51
  52 extern "C" {
  53 static void
  54 gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
  55                               GtkNotebookPage *page,
  56                               gint WXUNUSED(page_num),
  57                               wxMDIParentFrame *parent )
  58 {
  59     if (g_isIdle)
  60         wxapp_install_idle_handler();
  61
  62     // send deactivate event to old child
  63
  64     wxMDIChildFrame *child = parent->GetActiveChild();
  65     if (child)
  66     {
  67         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
  68         event1.SetEventObject( child);
  69         child->GetEventHandler()->ProcessEvent( event1 );
  70     }
  71
  72     // send activate event to new child
  73
  74     wxMDIClientWindow *client_window = parent->GetClientWindow();
  75     if (!client_window)
  76         return;
  77
  78     child = (wxMDIChildFrame*) NULL;
  79
  80     wxWindowList::compatibility_iterator node = client_window->GetChildren().GetFirst();
  81     while (node)
  82     {
  83         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
  84         // CE: we come here in the destructor with a null child_frame - I think because
  85         // gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page", (see below)
  86         // isn't deleted early enough
  87         if (!child_frame)
  88           return ;
  89
  90         if (child_frame->m_page == page)
  91         {
  92             child = child_frame;
  93             break;
  94         }
  95         node = node->GetNext();
  96     }
  97
  98     if (!child)
  99          return;
 100
 101     wxActivateEvent event2( wxEVT_ACTIVATE, true, child->GetId() );
 102     event2.SetEventObject( child);
 103     child->GetEventHandler()->ProcessEvent( event2 );
 104 }
 105 }
 106
 107 //-----------------------------------------------------------------------------
 108 // wxMDIParentFrame
 109 //-----------------------------------------------------------------------------
 110
 111 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 112
 113 void wxMDIParentFrame::Init()
 114 {
 115     m_justInserted = false;
 116     m_clientWindow = (wxMDIClientWindow *) NULL;
 117 }
 118
 119 wxMDIParentFrame::~wxMDIParentFrame()
 120 {
 121 }
 122
 123 bool wxMDIParentFrame::Create(wxWindow *parent,
 124                               wxWindowID id,
 125                               const wxString& title,
 126                               const wxPoint& pos,
 127                               const wxSize& size,
 128                               long style,
 129                               const wxString& name )
 130 {
 131     wxFrame::Create( parent, id, title, pos, size, style, name );
 132
 133     OnCreateClient();
 134
 135     return true;
 136 }
 137
 138 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 139 {
 140     wxFrame::GtkOnSize( x, y, width, height );
 141
 142     wxMDIChildFrame *child_frame = GetActiveChild();
 143     if (!child_frame) return;
 144
 145     wxMenuBar *menu_bar = child_frame->m_menuBar;
 146     if (!menu_bar) return;
 147     if (!menu_bar->m_widget) return;
 148
 149     menu_bar->m_x = 0;
 150     menu_bar->m_y = 0;
 151     menu_bar->m_width = m_width;
 152     menu_bar->m_height = wxMENU_HEIGHT;
 153     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 154                           menu_bar->m_widget,
 155                           0, 0, m_width, wxMENU_HEIGHT );
 156 }
 157
 158 void wxMDIParentFrame::OnInternalIdle()
 159 {
 160     /* if a an MDI child window has just been inserted
 161        it has to be brought to the top in idle time. we
 162        simply set the last notebook page active as new
 163        pages can only be appended at the end */
 164
 165     if (m_justInserted)
 166     {
 167         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 168         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 169
 170         /* need to set the menubar of the child */
 171         wxMDIChildFrame *active_child_frame = GetActiveChild();
 172         if (active_child_frame != NULL)
 173         {
 174             wxMenuBar *menu_bar = active_child_frame->m_menuBar;
 175             if (menu_bar)
 176             {
 177                 menu_bar->m_width = m_width;
 178                 menu_bar->m_height = wxMENU_HEIGHT;
 179                 gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 180                                     menu_bar->m_widget,
 181                                     0, 0, m_width, wxMENU_HEIGHT );
 182                 menu_bar->SetInvokingWindow(active_child_frame);
 183             }
 184         }
 185         m_justInserted = false;
 186         return;
 187     }
 188
 189     wxFrame::OnInternalIdle();
 190
 191     wxMDIChildFrame *active_child_frame = GetActiveChild();
 192     bool visible_child_menu = false;
 193
 194     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 195     while (node)
 196     {
 197         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 198
 199         if ( child_frame )
 200         {
 201             wxMenuBar *menu_bar = child_frame->m_menuBar;
 202             if ( menu_bar )
 203             {
 204                 if (child_frame == active_child_frame)
 205                 {
 206                     if (menu_bar->Show(true))
 207                     {
 208                         menu_bar->m_width = m_width;
 209                         menu_bar->m_height = wxMENU_HEIGHT;
 210                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 211                                             menu_bar->m_widget,
 212                                             0, 0, m_width, wxMENU_HEIGHT );
 213                         menu_bar->SetInvokingWindow( child_frame );
 214                     }
 215                     visible_child_menu = true;
 216                 }
 217                 else
 218                 {
 219                     if (menu_bar->Show(false))
 220                     {
 221                         menu_bar->UnsetInvokingWindow( child_frame );
 222                     }
 223                 }
 224             }
 225         }
 226
 227         node = node->GetNext();
 228     }
 229
 230     /* show/hide parent menu bar as required */
 231     if ((m_frameMenuBar) &&
 232         (m_frameMenuBar->IsShown() == visible_child_menu))
 233     {
 234         if (visible_child_menu)
 235         {
 236             m_frameMenuBar->Show( false );
 237             m_frameMenuBar->UnsetInvokingWindow( this );
 238         }
 239         else
 240         {
 241             m_frameMenuBar->Show( true );
 242             m_frameMenuBar->SetInvokingWindow( this );
 243
 244             m_frameMenuBar->m_width = m_width;
 245             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 246             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 247                                 m_frameMenuBar->m_widget,
 248                                 0, 0, m_width, wxMENU_HEIGHT );
 249         }
 250     }
 251 }
 252
 253 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 254 {
 255     wxFrame::DoGetClientSize( width, height );
 256 }
 257
 258 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 259 {
 260     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 261
 262     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 263     if (!notebook) return (wxMDIChildFrame*) NULL;
 264
 265     gint i = gtk_notebook_get_current_page( notebook );
 266     if (i < 0) return (wxMDIChildFrame*) NULL;
 267
 268     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 269     if (!page) return (wxMDIChildFrame*) NULL;
 270
 271     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 272     while (node)
 273     {
 274         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 275
 276         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
 277
 278         if (child_frame->m_page == page)
 279             return child_frame;
 280         node = node->GetNext();
 281     }
 282
 283     return (wxMDIChildFrame*) NULL;
 284 }
 285
 286 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 287 {
 288     return m_clientWindow;
 289 }
 290
 291 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 292 {
 293     m_clientWindow = new wxMDIClientWindow( this );
 294     return m_clientWindow;
 295 }
 296
 297 void wxMDIParentFrame::ActivateNext()
 298 {
 299     if (m_clientWindow)
 300       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 301 }
 302
 303 void wxMDIParentFrame::ActivatePrevious()
 304 {
 305     if (m_clientWindow)
 306       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 307 }
 308
 309 //-----------------------------------------------------------------------------
 310 // wxMDIChildFrame
 311 //-----------------------------------------------------------------------------
 312
 313 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 314
 315 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 316     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 317     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 318 END_EVENT_TABLE()
 319
 320 wxMDIChildFrame::wxMDIChildFrame()
 321 {
 322     m_menuBar = (wxMenuBar *) NULL;
 323     m_page = (GtkNotebookPage *) NULL;
 324 }
 325
 326 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 327       wxWindowID id, const wxString& title,
 328       const wxPoint& WXUNUSED(pos), const wxSize& size,
 329       long style, const wxString& name )
 330 {
 331     m_menuBar = (wxMenuBar *) NULL;
 332     m_page = (GtkNotebookPage *) NULL;
 333     Create( parent, id, title, wxDefaultPosition, size, style, name );
 334 }
 335
 336 wxMDIChildFrame::~wxMDIChildFrame()
 337 {
 338     if (m_menuBar)
 339         delete m_menuBar;
 340 }
 341
 342 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 343       wxWindowID id, const wxString& title,
 344       const wxPoint& WXUNUSED(pos), const wxSize& size,
 345       long style, const wxString& name )
 346 {
 347     m_title = title;
 348
 349     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 350 }
 351
 352 void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 353 {
 354     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 355 }
 356
 357 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 358 {
 359     wxWindow::DoSetClientSize( width, height );
 360 }
 361
 362 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 363 {
 364     wxWindow::DoGetClientSize( width, height );
 365 }
 366
 367 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 368 {
 369     wxWindow::AddChild(child);
 370 }
 371
 372 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 373 {
 374     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 375
 376     m_menuBar = menu_bar;
 377
 378     if (m_menuBar)
 379     {
 380         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 381
 382         m_menuBar->SetParent( mdi_frame );
 383
 384         /* insert the invisible menu bar into the _parent_ mdi frame */
 385         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 386                          m_menuBar->m_widget,
 387                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 388     }
 389 }
 390
 391 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 392 {
 393     return m_menuBar;
 394 }
 395
 396 void wxMDIChildFrame::Activate()
 397 {
 398     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 399     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 400     gint pageno = gtk_notebook_page_num( notebook, m_widget );
 401     gtk_notebook_set_page( notebook, pageno );
 402 }
 403
 404 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 405 {
 406 }
 407
 408 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 409 {
 410 #if wxUSE_STATUSBAR
 411     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 412     if ( !ShowMenuHelp(event.GetMenuId()) )
 413     {
 414         // we don't have any help text for this item, but may be the MDI frame
 415         // does?
 416         mdi_frame->OnMenuHighlight(event);
 417     }
 418 #endif // wxUSE_STATUSBAR
 419 }
 420
 421 void wxMDIChildFrame::SetTitle( const wxString &title )
 422 {
 423     if ( title == m_title )
 424         return;
 425
 426     m_title = title;
 427
 428     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 429     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 430     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 431 }
 432
 433 //-----------------------------------------------------------------------------
 434 // "size_allocate"
 435 //-----------------------------------------------------------------------------
 436
 437 extern "C" {
 438 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 439 {
 440     if (g_isIdle) wxapp_install_idle_handler();
 441
 442     if ((win->m_x == alloc->x) &&
 443         (win->m_y == alloc->y) &&
 444         (win->m_width == alloc->width) &&
 445         (win->m_height == alloc->height) &&
 446         (win->m_sizeSet))
 447     {
 448         return;
 449     }
 450
 451     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 452 }
 453 }
 454
 455 //-----------------------------------------------------------------------------
 456 // InsertChild callback for wxMDIClientWindow
 457 //-----------------------------------------------------------------------------
 458
 459 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 460 {
 461     wxString s = child->GetTitle();
 462     if (s.IsNull()) s = _("MDI child");
 463
 464     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 465     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 466
 467     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 468       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 469
 470     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 471
 472     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 473
 474     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 475
 476     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 477     parent_frame->m_justInserted = true;
 478 }
 479
 480 //-----------------------------------------------------------------------------
 481 // wxMDIClientWindow
 482 //-----------------------------------------------------------------------------
 483
 484 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 485
 486 wxMDIClientWindow::wxMDIClientWindow()
 487 {
 488 }
 489
 490 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 491 {
 492     CreateClient( parent, style );
 493 }
 494
 495 wxMDIClientWindow::~wxMDIClientWindow()
 496 {
 497
 498 }
 499
 500 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 501 {
 502     m_needParent = true;
 503
 504     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 505
 506     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 507         !CreateBase( parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 508     {
 509         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 510         return false;
 511     }
 512
 513     m_widget = gtk_notebook_new();
 514
 515     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 516       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 517
 518     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 519
 520     m_parent->DoAddChild( this );
 521
 522     PostCreation();
 523
 524     Show( true );
 525
 526     return true;
 527 }
 528
 529 #endif