src/gtk/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/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/gtk/private.h"
  25
  26 #include <gtk/gtk.h>
  27 #include "wx/gtk/win_gtk.h"
  28
  29 //-----------------------------------------------------------------------------
  30 // constants
  31 //-----------------------------------------------------------------------------
  32
  33 const int wxMENU_HEIGHT = 27;
  34
  35 //-----------------------------------------------------------------------------
  36 // globals
  37 //-----------------------------------------------------------------------------
  38
  39 //-----------------------------------------------------------------------------
  40 // "switch_page"
  41 //-----------------------------------------------------------------------------
  42
  43 extern "C" {
  44 static void
  45 gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
  46                               GtkNotebookPage *page,
  47                               gint WXUNUSED(page_num),
  48                               wxMDIParentFrame *parent )
  49 {
  50     // send deactivate event to old child
  51
  52     wxMDIChildFrame *child = parent->GetActiveChild();
  53     if (child)
  54     {
  55         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
  56         event1.SetEventObject( child);
  57         child->GetEventHandler()->ProcessEvent( event1 );
  58     }
  59
  60     // send activate event to new child
  61
  62     wxMDIClientWindow *client_window = parent->GetClientWindow();
  63     if (!client_window)
  64         return;
  65
  66     child = (wxMDIChildFrame*) NULL;
  67
  68     wxWindowList::compatibility_iterator node = client_window->GetChildren().GetFirst();
  69     while ( node )
  70     {
  71         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
  72
  73         // child_frame can be NULL when this is called from dtor, probably
  74         // because g_signal_connect (m_widget, "switch_page", (see below)
  75         // isn't deleted early enough
  76         if ( child_frame && child_frame->m_page == page )
  77         {
  78             child = child_frame;
  79             break;
  80         }
  81         node = node->GetNext();
  82     }
  83
  84     if (!child)
  85          return;
  86
  87     wxActivateEvent event2( wxEVT_ACTIVATE, true, child->GetId() );
  88     event2.SetEventObject( child);
  89     child->GetEventHandler()->ProcessEvent( event2 );
  90 }
  91 }
  92
  93 //-----------------------------------------------------------------------------
  94 // wxMDIParentFrame
  95 //-----------------------------------------------------------------------------
  96
  97 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
  98
  99 void wxMDIParentFrame::Init()
 100 {
 101     m_justInserted = false;
 102     m_clientWindow = (wxMDIClientWindow *) NULL;
 103 }
 104
 105 wxMDIParentFrame::~wxMDIParentFrame()
 106 {
 107 }
 108
 109 bool wxMDIParentFrame::Create(wxWindow *parent,
 110                               wxWindowID id,
 111                               const wxString& title,
 112                               const wxPoint& pos,
 113                               const wxSize& size,
 114                               long style,
 115                               const wxString& name )
 116 {
 117     wxFrame::Create( parent, id, title, pos, size, style, name );
 118
 119     OnCreateClient();
 120
 121     return true;
 122 }
 123
 124 void wxMDIParentFrame::GtkOnSize()
 125 {
 126     wxFrame::GtkOnSize();
 127
 128     wxMDIChildFrame *child_frame = GetActiveChild();
 129     if (!child_frame) return;
 130
 131     wxMenuBar *menu_bar = child_frame->m_menuBar;
 132     if (!menu_bar) return;
 133     if (!menu_bar->m_widget) return;
 134
 135     menu_bar->m_x = 0;
 136     menu_bar->m_y = 0;
 137     menu_bar->m_width = m_width;
 138     menu_bar->m_height = wxMENU_HEIGHT;
 139     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 140                           menu_bar->m_widget,
 141                           0, 0, m_width, wxMENU_HEIGHT );
 142 }
 143
 144 void wxMDIParentFrame::OnInternalIdle()
 145 {
 146     /* if a an MDI child window has just been inserted
 147        it has to be brought to the top in idle time. we
 148        simply set the last notebook page active as new
 149        pages can only be appended at the end */
 150
 151     if (m_justInserted)
 152     {
 153         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 154         gtk_notebook_set_current_page( notebook, g_list_length( notebook->children ) - 1 );
 155
 156         /* need to set the menubar of the child */
 157         wxMDIChildFrame *active_child_frame = GetActiveChild();
 158         if (active_child_frame != NULL)
 159         {
 160             wxMenuBar *menu_bar = active_child_frame->m_menuBar;
 161             if (menu_bar)
 162             {
 163                 menu_bar->m_width = m_width;
 164                 menu_bar->m_height = wxMENU_HEIGHT;
 165                 gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 166                                     menu_bar->m_widget,
 167                                     0, 0, m_width, wxMENU_HEIGHT );
 168                 menu_bar->SetInvokingWindow(active_child_frame);
 169             }
 170         }
 171         m_justInserted = false;
 172         return;
 173     }
 174
 175     wxFrame::OnInternalIdle();
 176
 177     wxMDIChildFrame *active_child_frame = GetActiveChild();
 178     bool visible_child_menu = false;
 179
 180     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 181     while (node)
 182     {
 183         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 184
 185         if ( child_frame )
 186         {
 187             wxMenuBar *menu_bar = child_frame->m_menuBar;
 188             if ( menu_bar )
 189             {
 190                 if (child_frame == active_child_frame)
 191                 {
 192                     if (menu_bar->Show(true))
 193                     {
 194                         menu_bar->m_width = m_width;
 195                         menu_bar->m_height = wxMENU_HEIGHT;
 196                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 197                                             menu_bar->m_widget,
 198                                             0, 0, m_width, wxMENU_HEIGHT );
 199                         menu_bar->SetInvokingWindow( child_frame );
 200                     }
 201                     visible_child_menu = true;
 202                 }
 203                 else
 204                 {
 205                     if (menu_bar->Show(false))
 206                     {
 207                         menu_bar->UnsetInvokingWindow( child_frame );
 208                     }
 209                 }
 210             }
 211         }
 212
 213         node = node->GetNext();
 214     }
 215
 216     /* show/hide parent menu bar as required */
 217     if ((m_frameMenuBar) &&
 218         (m_frameMenuBar->IsShown() == visible_child_menu))
 219     {
 220         if (visible_child_menu)
 221         {
 222             m_frameMenuBar->Show( false );
 223             m_frameMenuBar->UnsetInvokingWindow( this );
 224         }
 225         else
 226         {
 227             m_frameMenuBar->Show( true );
 228             m_frameMenuBar->SetInvokingWindow( this );
 229
 230             m_frameMenuBar->m_width = m_width;
 231             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 232             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 233                                 m_frameMenuBar->m_widget,
 234                                 0, 0, m_width, wxMENU_HEIGHT );
 235         }
 236     }
 237 }
 238
 239 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 240 {
 241     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 242
 243     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 244     if (!notebook) return (wxMDIChildFrame*) NULL;
 245
 246     gint i = gtk_notebook_get_current_page( notebook );
 247     if (i < 0) return (wxMDIChildFrame*) NULL;
 248
 249     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 250     if (!page) return (wxMDIChildFrame*) NULL;
 251
 252     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 253     while (node)
 254     {
 255         if ( wxPendingDelete.Member(node->GetData()) )
 256             return (wxMDIChildFrame*) NULL;
 257
 258         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 259
 260         if (!child_frame)
 261             return (wxMDIChildFrame*) NULL;
 262
 263         if (child_frame->m_page == page)
 264             return child_frame;
 265
 266         node = node->GetNext();
 267     }
 268
 269     return (wxMDIChildFrame*) NULL;
 270 }
 271
 272 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 273 {
 274     return m_clientWindow;
 275 }
 276
 277 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 278 {
 279     m_clientWindow = new wxMDIClientWindow( this );
 280     return m_clientWindow;
 281 }
 282
 283 void wxMDIParentFrame::ActivateNext()
 284 {
 285     if (m_clientWindow)
 286       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 287 }
 288
 289 void wxMDIParentFrame::ActivatePrevious()
 290 {
 291     if (m_clientWindow)
 292       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 293 }
 294
 295 //-----------------------------------------------------------------------------
 296 // wxMDIChildFrame
 297 //-----------------------------------------------------------------------------
 298
 299 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 300
 301 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 302     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 303     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 304 END_EVENT_TABLE()
 305
 306 wxMDIChildFrame::wxMDIChildFrame()
 307 {
 308     m_menuBar = (wxMenuBar *) NULL;
 309     m_page = (GtkNotebookPage *) NULL;
 310 }
 311
 312 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 313       wxWindowID id, const wxString& title,
 314       const wxPoint& WXUNUSED(pos), const wxSize& size,
 315       long style, const wxString& name )
 316 {
 317     m_menuBar = (wxMenuBar *) NULL;
 318     m_page = (GtkNotebookPage *) NULL;
 319     Create( parent, id, title, wxDefaultPosition, size, style, name );
 320 }
 321
 322 wxMDIChildFrame::~wxMDIChildFrame()
 323 {
 324     if (m_menuBar)
 325         delete m_menuBar;
 326 }
 327
 328 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 329       wxWindowID id, const wxString& title,
 330       const wxPoint& WXUNUSED(pos), const wxSize& size,
 331       long style, const wxString& name )
 332 {
 333     m_title = title;
 334
 335     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 336 }
 337
 338 bool wxMDIChildFrame::Destroy()
 339 {
 340     // delayed destruction: the frame will be deleted during
 341     // the next idle loop iteration.
 342     // I'm not sure if delayed destruction really makes so
 343     // much sense for MDI child frames, actually, but hiding
 344     // it doesn't make any sense.
 345     if ( !wxPendingDelete.Member(this) )
 346         wxPendingDelete.Append(this);
 347
 348     return true;
 349 }
 350
 351 void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 352 {
 353     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 354 }
 355
 356 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 357 {
 358     wxWindow::DoSetClientSize( width, height );
 359 }
 360
 361 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 362 {
 363     wxWindow::DoGetClientSize( width, height );
 364 }
 365
 366 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 367 {
 368     wxWindow::AddChild(child);
 369 }
 370
 371 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 372 {
 373     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 374
 375     m_menuBar = menu_bar;
 376
 377     if (m_menuBar)
 378     {
 379         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 380
 381         m_menuBar->SetParent( mdi_frame );
 382
 383         /* insert the invisible menu bar into the _parent_ mdi frame */
 384         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 385                          m_menuBar->m_widget,
 386                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 387     }
 388 }
 389
 390 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 391 {
 392     return m_menuBar;
 393 }
 394
 395 void wxMDIChildFrame::Activate()
 396 {
 397     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 398     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 399     gint pageno = gtk_notebook_page_num( notebook, m_widget );
 400     gtk_notebook_set_current_page( notebook, pageno );
 401 }
 402
 403 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 404 {
 405 }
 406
 407 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 408 {
 409 #if wxUSE_STATUSBAR
 410     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 411     if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
 412     {
 413         // we don't have any help text for this item, but may be the MDI frame
 414         // does?
 415         mdi_frame->OnMenuHighlight(event);
 416     }
 417 #endif // wxUSE_STATUSBAR
 418 }
 419
 420 void wxMDIChildFrame::SetTitle( const wxString &title )
 421 {
 422     if ( title == m_title )
 423         return;
 424
 425     m_title = title;
 426
 427     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 428     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 429     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 430 }
 431
 432 //-----------------------------------------------------------------------------
 433 // "size_allocate"
 434 //-----------------------------------------------------------------------------
 435
 436 extern "C" {
 437 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 438 {
 439     if ((win->m_x == alloc->x) &&
 440         (win->m_y == alloc->y) &&
 441         (win->m_width == alloc->width) &&
 442         (win->m_height == alloc->height) &&
 443         (win->m_sizeSet))
 444     {
 445         return;
 446     }
 447
 448     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 449 }
 450 }
 451
 452 //-----------------------------------------------------------------------------
 453 // InsertChild callback for wxMDIClientWindow
 454 //-----------------------------------------------------------------------------
 455
 456 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 457 {
 458     wxString s = child->GetTitle();
 459     if (s.IsNull()) s = _("MDI child");
 460
 461     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 462     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 463
 464     g_signal_connect (child->m_widget, "size_allocate",
 465                       G_CALLBACK (gtk_page_size_callback), child);
 466
 467     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 468
 469     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 470
 471     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 472
 473     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 474     parent_frame->m_justInserted = true;
 475 }
 476
 477 //-----------------------------------------------------------------------------
 478 // wxMDIClientWindow
 479 //-----------------------------------------------------------------------------
 480
 481 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 482
 483 wxMDIClientWindow::wxMDIClientWindow()
 484 {
 485 }
 486
 487 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 488 {
 489     CreateClient( parent, style );
 490 }
 491
 492 wxMDIClientWindow::~wxMDIClientWindow()
 493 {
 494
 495 }
 496
 497 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 498 {
 499     m_needParent = true;
 500
 501     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 502
 503     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 504         !CreateBase( parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 505     {
 506         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 507         return false;
 508     }
 509
 510     m_widget = gtk_notebook_new();
 511
 512     g_signal_connect (m_widget, "switch_page",
 513                       G_CALLBACK (gtk_mdi_page_change_callback), parent);
 514
 515     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 516
 517     m_parent->DoAddChild( this );
 518
 519     PostCreation();
 520
 521     Show( true );
 522
 523     return true;
 524 }
 525
 526 #endif