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 #include "wx/mdi.h"
  14 #include "wx/notebook.h"
  15
  16 #if wxUSE_MDI
  17
  18 #include "wx/dialog.h"
  19 #include "wx/menu.h"
  20 #include "wx/intl.h"
  21 #include "wx/gtk/private.h"
  22
  23 #include <glib.h>
  24 #include <gdk/gdk.h>
  25 #include <gtk/gtk.h>
  26 #include "wx/gtk/win_gtk.h"
  27
  28 //-----------------------------------------------------------------------------
  29 // constants
  30 //-----------------------------------------------------------------------------
  31
  32 const int wxMENU_HEIGHT = 27;
  33
  34 //-----------------------------------------------------------------------------
  35 // idle system
  36 //-----------------------------------------------------------------------------
  37
  38 extern void wxapp_install_idle_handler();
  39 extern bool g_isIdle;
  40
  41 //-----------------------------------------------------------------------------
  42 // globals
  43 //-----------------------------------------------------------------------------
  44
  45 extern wxList wxPendingDelete;
  46
  47 //-----------------------------------------------------------------------------
  48 // "switch_page"
  49 //-----------------------------------------------------------------------------
  50
  51 extern "C" {
  52 static void
  53 gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
  54                               GtkNotebookPage *page,
  55                               gint WXUNUSED(page_num),
  56                               wxMDIParentFrame *parent )
  57 {
  58     if (g_isIdle)
  59         wxapp_install_idle_handler();
  60
  61     // send deactivate event to old child
  62
  63     wxMDIChildFrame *child = parent->GetActiveChild();
  64     if (child)
  65     {
  66         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
  67         event1.SetEventObject( child);
  68         child->GetEventHandler()->ProcessEvent( event1 );
  69     }
  70
  71     // send activate event to new child
  72
  73     wxMDIClientWindow *client_window = parent->GetClientWindow();
  74     if (!client_window)
  75         return;
  76
  77     child = (wxMDIChildFrame*) NULL;
  78
  79     wxWindowList::compatibility_iterator node = client_window->GetChildren().GetFirst();
  80     while (node)
  81     {
  82         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
  83         // CE: we come here in the destructor with a null child_frame - I think because
  84         // gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page", (see below)
  85         // isn't deleted early enough
  86         if (!child_frame)
  87           return ;
  88
  89         if (child_frame->m_page == page)
  90         {
  91             child = child_frame;
  92             break;
  93         }
  94         node = node->GetNext();
  95     }
  96
  97     if (!child)
  98          return;
  99
 100     wxActivateEvent event2( wxEVT_ACTIVATE, true, child->GetId() );
 101     event2.SetEventObject( child);
 102     child->GetEventHandler()->ProcessEvent( event2 );
 103 }
 104 }
 105
 106 //-----------------------------------------------------------------------------
 107 // wxMDIParentFrame
 108 //-----------------------------------------------------------------------------
 109
 110 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 111
 112 void wxMDIParentFrame::Init()
 113 {
 114     m_justInserted = false;
 115     m_clientWindow = (wxMDIClientWindow *) NULL;
 116 }
 117
 118 wxMDIParentFrame::~wxMDIParentFrame()
 119 {
 120 }
 121
 122 bool wxMDIParentFrame::Create(wxWindow *parent,
 123                               wxWindowID id,
 124                               const wxString& title,
 125                               const wxPoint& pos,
 126                               const wxSize& size,
 127                               long style,
 128                               const wxString& name )
 129 {
 130     wxFrame::Create( parent, id, title, pos, size, style, name );
 131
 132     OnCreateClient();
 133
 134     return true;
 135 }
 136
 137 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 138 {
 139     wxFrame::GtkOnSize( x, y, width, height );
 140
 141     wxMDIChildFrame *child_frame = GetActiveChild();
 142     if (!child_frame) return;
 143
 144     wxMenuBar *menu_bar = child_frame->m_menuBar;
 145     if (!menu_bar) return;
 146     if (!menu_bar->m_widget) return;
 147
 148     menu_bar->m_x = 0;
 149     menu_bar->m_y = 0;
 150     menu_bar->m_width = m_width;
 151     menu_bar->m_height = wxMENU_HEIGHT;
 152     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 153                           menu_bar->m_widget,
 154                           0, 0, m_width, wxMENU_HEIGHT );
 155 }
 156
 157 void wxMDIParentFrame::OnInternalIdle()
 158 {
 159     /* if a an MDI child window has just been inserted
 160        it has to be brought to the top in idle time. we
 161        simply set the last notebook page active as new
 162        pages can only be appended at the end */
 163
 164     if (m_justInserted)
 165     {
 166         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 167         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 168
 169         /* need to set the menubar of the child */
 170         wxMDIChildFrame *active_child_frame = GetActiveChild();
 171         if (active_child_frame != NULL)
 172         {
 173             wxMenuBar *menu_bar = active_child_frame->m_menuBar;
 174             if (menu_bar)
 175             {
 176                 menu_bar->m_width = m_width;
 177                 menu_bar->m_height = wxMENU_HEIGHT;
 178                 gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 179                                     menu_bar->m_widget,
 180                                     0, 0, m_width, wxMENU_HEIGHT );
 181                 menu_bar->SetInvokingWindow(active_child_frame);
 182             }
 183         }
 184         m_justInserted = false;
 185         return;
 186     }
 187
 188     wxFrame::OnInternalIdle();
 189
 190     wxMDIChildFrame *active_child_frame = GetActiveChild();
 191     bool visible_child_menu = false;
 192
 193     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 194     while (node)
 195     {
 196         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 197
 198         if ( child_frame )
 199         {
 200             wxMenuBar *menu_bar = child_frame->m_menuBar;
 201             if ( menu_bar )
 202             {
 203                 if (child_frame == active_child_frame)
 204                 {
 205                     if (menu_bar->Show(true))
 206                     {
 207                         menu_bar->m_width = m_width;
 208                         menu_bar->m_height = wxMENU_HEIGHT;
 209                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 210                                             menu_bar->m_widget,
 211                                             0, 0, m_width, wxMENU_HEIGHT );
 212                         menu_bar->SetInvokingWindow( child_frame );
 213                     }
 214                     visible_child_menu = true;
 215                 }
 216                 else
 217                 {
 218                     if (menu_bar->Show(false))
 219                     {
 220                         menu_bar->UnsetInvokingWindow( child_frame );
 221                     }
 222                 }
 223             }
 224         }
 225
 226         node = node->GetNext();
 227     }
 228
 229     /* show/hide parent menu bar as required */
 230     if ((m_frameMenuBar) &&
 231         (m_frameMenuBar->IsShown() == visible_child_menu))
 232     {
 233         if (visible_child_menu)
 234         {
 235             m_frameMenuBar->Show( false );
 236             m_frameMenuBar->UnsetInvokingWindow( this );
 237         }
 238         else
 239         {
 240             m_frameMenuBar->Show( true );
 241             m_frameMenuBar->SetInvokingWindow( this );
 242
 243             m_frameMenuBar->m_width = m_width;
 244             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 245             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 246                                 m_frameMenuBar->m_widget,
 247                                 0, 0, m_width, wxMENU_HEIGHT );
 248         }
 249     }
 250 }
 251
 252 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 253 {
 254     wxFrame::DoGetClientSize( width, height );
 255 }
 256
 257 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 258 {
 259     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 260
 261     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 262     if (!notebook) return (wxMDIChildFrame*) NULL;
 263
 264     gint i = gtk_notebook_get_current_page( notebook );
 265     if (i < 0) return (wxMDIChildFrame*) NULL;
 266
 267     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 268     if (!page) return (wxMDIChildFrame*) NULL;
 269
 270     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 271     while (node)
 272     {
 273         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 274
 275         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
 276
 277         if (child_frame->m_page == page)
 278             return child_frame;
 279         node = node->GetNext();
 280     }
 281
 282     return (wxMDIChildFrame*) NULL;
 283 }
 284
 285 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 286 {
 287     return m_clientWindow;
 288 }
 289
 290 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 291 {
 292     m_clientWindow = new wxMDIClientWindow( this );
 293     return m_clientWindow;
 294 }
 295
 296 void wxMDIParentFrame::ActivateNext()
 297 {
 298     if (m_clientWindow)
 299       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 300 }
 301
 302 void wxMDIParentFrame::ActivatePrevious()
 303 {
 304     if (m_clientWindow)
 305       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 306 }
 307
 308 //-----------------------------------------------------------------------------
 309 // wxMDIChildFrame
 310 //-----------------------------------------------------------------------------
 311
 312 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 313
 314 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 315     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 316     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 317 END_EVENT_TABLE()
 318
 319 wxMDIChildFrame::wxMDIChildFrame()
 320 {
 321     m_menuBar = (wxMenuBar *) NULL;
 322     m_page = (GtkNotebookPage *) NULL;
 323 }
 324
 325 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 326       wxWindowID id, const wxString& title,
 327       const wxPoint& WXUNUSED(pos), const wxSize& size,
 328       long style, const wxString& name )
 329 {
 330     m_menuBar = (wxMenuBar *) NULL;
 331     m_page = (GtkNotebookPage *) NULL;
 332     Create( parent, id, title, wxDefaultPosition, size, style, name );
 333 }
 334
 335 wxMDIChildFrame::~wxMDIChildFrame()
 336 {
 337     if (m_menuBar)
 338         delete m_menuBar;
 339 }
 340
 341 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 342       wxWindowID id, const wxString& title,
 343       const wxPoint& WXUNUSED(pos), const wxSize& size,
 344       long style, const wxString& name )
 345 {
 346     m_title = title;
 347
 348     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 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_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 (g_isIdle) wxapp_install_idle_handler();
 440
 441     if ((win->m_x == alloc->x) &&
 442         (win->m_y == alloc->y) &&
 443         (win->m_width == alloc->width) &&
 444         (win->m_height == alloc->height) &&
 445         (win->m_sizeSet))
 446     {
 447         return;
 448     }
 449
 450     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 451 }
 452 }
 453
 454 //-----------------------------------------------------------------------------
 455 // InsertChild callback for wxMDIClientWindow
 456 //-----------------------------------------------------------------------------
 457
 458 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 459 {
 460     wxString s = child->GetTitle();
 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, wxID_ANY, 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