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         if (active_child_frame != NULL)
 174         {
 175             wxMenuBar *menu_bar = active_child_frame->m_menuBar;
 176             if (menu_bar)
 177             {
 178                 menu_bar->m_width = m_width;
 179                 menu_bar->m_height = wxMENU_HEIGHT;
 180                 gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 181                                     menu_bar->m_widget,
 182                                     0, 0, m_width, wxMENU_HEIGHT );
 183                 menu_bar->SetInvokingWindow(active_child_frame);
 184             }
 185         }
 186         m_justInserted = false;
 187         return;
 188     }
 189
 190     wxFrame::OnInternalIdle();
 191
 192     wxMDIChildFrame *active_child_frame = GetActiveChild();
 193     bool visible_child_menu = false;
 194
 195     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 196     while (node)
 197     {
 198         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 199
 200         if ( child_frame )
 201         {
 202             wxMenuBar *menu_bar = child_frame->m_menuBar;
 203             if ( menu_bar )
 204             {
 205                 if (child_frame == active_child_frame)
 206                 {
 207                     if (menu_bar->Show(true))
 208                     {
 209                         menu_bar->m_width = m_width;
 210                         menu_bar->m_height = wxMENU_HEIGHT;
 211                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 212                                             menu_bar->m_widget,
 213                                             0, 0, m_width, wxMENU_HEIGHT );
 214                         menu_bar->SetInvokingWindow( child_frame );
 215                     }
 216                     visible_child_menu = true;
 217                 }
 218                 else
 219                 {
 220                     if (menu_bar->Show(false))
 221                     {
 222                         menu_bar->UnsetInvokingWindow( child_frame );
 223                     }
 224                 }
 225             }
 226         }
 227
 228         node = node->GetNext();
 229     }
 230
 231     /* show/hide parent menu bar as required */
 232     if ((m_frameMenuBar) &&
 233         (m_frameMenuBar->IsShown() == visible_child_menu))
 234     {
 235         if (visible_child_menu)
 236         {
 237             m_frameMenuBar->Show( false );
 238             m_frameMenuBar->UnsetInvokingWindow( this );
 239         }
 240         else
 241         {
 242             m_frameMenuBar->Show( true );
 243             m_frameMenuBar->SetInvokingWindow( this );
 244
 245             m_frameMenuBar->m_width = m_width;
 246             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 247             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 248                                 m_frameMenuBar->m_widget,
 249                                 0, 0, m_width, wxMENU_HEIGHT );
 250         }
 251     }
 252 }
 253
 254 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 255 {
 256     wxFrame::DoGetClientSize( width, height );
 257 }
 258
 259 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 260 {
 261     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 262
 263     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 264     if (!notebook) return (wxMDIChildFrame*) NULL;
 265
 266     gint i = gtk_notebook_get_current_page( notebook );
 267     if (i < 0) return (wxMDIChildFrame*) NULL;
 268
 269     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 270     if (!page) return (wxMDIChildFrame*) NULL;
 271
 272     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 273     while (node)
 274     {
 275         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 276
 277         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
 278
 279         if (child_frame->m_page == page)
 280             return child_frame;
 281         node = node->GetNext();
 282     }
 283
 284     return (wxMDIChildFrame*) NULL;
 285 }
 286
 287 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 288 {
 289     return m_clientWindow;
 290 }
 291
 292 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 293 {
 294     m_clientWindow = new wxMDIClientWindow( this );
 295     return m_clientWindow;
 296 }
 297
 298 void wxMDIParentFrame::ActivateNext()
 299 {
 300     if (m_clientWindow)
 301       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 302 }
 303
 304 void wxMDIParentFrame::ActivatePrevious()
 305 {
 306     if (m_clientWindow)
 307       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 308 }
 309
 310 //-----------------------------------------------------------------------------
 311 // wxMDIChildFrame
 312 //-----------------------------------------------------------------------------
 313
 314 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 315
 316 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 317     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 318     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 319 END_EVENT_TABLE()
 320
 321 wxMDIChildFrame::wxMDIChildFrame()
 322 {
 323     m_menuBar = (wxMenuBar *) NULL;
 324     m_page = (GtkNotebookPage *) NULL;
 325 }
 326
 327 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 328       wxWindowID id, const wxString& title,
 329       const wxPoint& WXUNUSED(pos), const wxSize& size,
 330       long style, const wxString& name )
 331 {
 332     m_menuBar = (wxMenuBar *) NULL;
 333     m_page = (GtkNotebookPage *) NULL;
 334     Create( parent, id, title, wxDefaultPosition, size, style, name );
 335 }
 336
 337 wxMDIChildFrame::~wxMDIChildFrame()
 338 {
 339     if (m_menuBar)
 340         delete m_menuBar;
 341 }
 342
 343 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 344       wxWindowID id, const wxString& title,
 345       const wxPoint& WXUNUSED(pos), const wxSize& size,
 346       long style, const wxString& name )
 347 {
 348     m_title = title;
 349
 350     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 351 }
 352
 353 void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 354 {
 355     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 356 }
 357
 358 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 359 {
 360     wxWindow::DoSetClientSize( width, height );
 361 }
 362
 363 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 364 {
 365     wxWindow::DoGetClientSize( width, height );
 366 }
 367
 368 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 369 {
 370     wxWindow::AddChild(child);
 371 }
 372
 373 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 374 {
 375     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 376
 377     m_menuBar = menu_bar;
 378
 379     if (m_menuBar)
 380     {
 381         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 382
 383         m_menuBar->SetParent( mdi_frame );
 384
 385         /* insert the invisible menu bar into the _parent_ mdi frame */
 386         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 387                          m_menuBar->m_widget,
 388                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 389     }
 390 }
 391
 392 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 393 {
 394     return m_menuBar;
 395 }
 396
 397 void wxMDIChildFrame::Activate()
 398 {
 399     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 400     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 401     gint pageno = gtk_notebook_page_num( notebook, m_widget );
 402     gtk_notebook_set_page( notebook, pageno );
 403 }
 404
 405 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 406 {
 407 }
 408
 409 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 410 {
 411 #if wxUSE_STATUSBAR
 412     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 413     if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
 414     {
 415         // we don't have any help text for this item, but may be the MDI frame
 416         // does?
 417         mdi_frame->OnMenuHighlight(event);
 418     }
 419 #endif // wxUSE_STATUSBAR
 420 }
 421
 422 void wxMDIChildFrame::SetTitle( const wxString &title )
 423 {
 424     if ( title == m_title )
 425         return;
 426
 427     m_title = title;
 428
 429     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 430     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 431     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 432 }
 433
 434 //-----------------------------------------------------------------------------
 435 // "size_allocate"
 436 //-----------------------------------------------------------------------------
 437
 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 // InsertChild callback for wxMDIClientWindow
 456 //-----------------------------------------------------------------------------
 457
 458 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 459 {
 460     wxString s = child->m_title;
 461     if (s.IsNull()) s = _("MDI child");
 462
 463     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 464     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 465
 466     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 467       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 468
 469     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 470
 471     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 472
 473     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 474
 475     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 476     parent_frame->m_justInserted = true;
 477 }
 478
 479 //-----------------------------------------------------------------------------
 480 // wxMDIClientWindow
 481 //-----------------------------------------------------------------------------
 482
 483 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 484
 485 wxMDIClientWindow::wxMDIClientWindow()
 486 {
 487 }
 488
 489 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 490 {
 491     CreateClient( parent, style );
 492 }
 493
 494 wxMDIClientWindow::~wxMDIClientWindow()
 495 {
 496
 497 }
 498
 499 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 500 {
 501     m_needParent = true;
 502
 503     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 504
 505     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 506         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 507     {
 508         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 509         return false;
 510     }
 511
 512     m_widget = gtk_notebook_new();
 513
 514     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 515       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 516
 517     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 518
 519     m_parent->DoAddChild( this );
 520
 521     PostCreation();
 522
 523     Show( true );
 524
 525     return true;
 526 }
 527
 528 #endif