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 #endif
  20
  21 #include "wx/notebook.h"
  22 #include "wx/dialog.h"
  23 #include "wx/menu.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 extern wxList wxPendingDelete;
  49
  50 //-----------------------------------------------------------------------------
  51 // "switch_page"
  52 //-----------------------------------------------------------------------------
  53
  54 extern "C" {
  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 //-----------------------------------------------------------------------------
 110 // wxMDIParentFrame
 111 //-----------------------------------------------------------------------------
 112
 113 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 114
 115 void wxMDIParentFrame::Init()
 116 {
 117     m_justInserted = false;
 118     m_clientWindow = (wxMDIClientWindow *) NULL;
 119 }
 120
 121 wxMDIParentFrame::~wxMDIParentFrame()
 122 {
 123 }
 124
 125 bool wxMDIParentFrame::Create(wxWindow *parent,
 126                               wxWindowID id,
 127                               const wxString& title,
 128                               const wxPoint& pos,
 129                               const wxSize& size,
 130                               long style,
 131                               const wxString& name )
 132 {
 133     wxFrame::Create( parent, id, title, pos, size, style, name );
 134
 135     OnCreateClient();
 136
 137     return true;
 138 }
 139
 140 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 141 {
 142     wxFrame::GtkOnSize( x, y, width, height );
 143
 144     wxMDIChildFrame *child_frame = GetActiveChild();
 145     if (!child_frame) return;
 146
 147     wxMenuBar *menu_bar = child_frame->m_menuBar;
 148     if (!menu_bar) return;
 149     if (!menu_bar->m_widget) return;
 150
 151     menu_bar->m_x = 0;
 152     menu_bar->m_y = 0;
 153     menu_bar->m_width = m_width;
 154     menu_bar->m_height = wxMENU_HEIGHT;
 155     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 156                           menu_bar->m_widget,
 157                           0, 0, m_width, wxMENU_HEIGHT );
 158 }
 159
 160 void wxMDIParentFrame::OnInternalIdle()
 161 {
 162     /* if a an MDI child window has just been inserted
 163        it has to be brought to the top in idle time. we
 164        simply set the last notebook page active as new
 165        pages can only be appended at the end */
 166
 167     if (m_justInserted)
 168     {
 169         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 170         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 171
 172         /* need to set the menubar of the child */
 173         wxMDIChildFrame *active_child_frame = GetActiveChild();
 174         if (active_child_frame != NULL)
 175         {
 176             wxMenuBar *menu_bar = active_child_frame->m_menuBar;
 177             if (menu_bar)
 178             {
 179                 menu_bar->m_width = m_width;
 180                 menu_bar->m_height = wxMENU_HEIGHT;
 181                 gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 182                                     menu_bar->m_widget,
 183                                     0, 0, m_width, wxMENU_HEIGHT );
 184                 menu_bar->SetInvokingWindow(active_child_frame);
 185             }
 186         }
 187         m_justInserted = false;
 188         return;
 189     }
 190
 191     wxFrame::OnInternalIdle();
 192
 193     wxMDIChildFrame *active_child_frame = GetActiveChild();
 194     bool visible_child_menu = false;
 195
 196     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 197     while (node)
 198     {
 199         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 200
 201         if ( child_frame )
 202         {
 203             wxMenuBar *menu_bar = child_frame->m_menuBar;
 204             if ( menu_bar )
 205             {
 206                 if (child_frame == active_child_frame)
 207                 {
 208                     if (menu_bar->Show(true))
 209                     {
 210                         menu_bar->m_width = m_width;
 211                         menu_bar->m_height = wxMENU_HEIGHT;
 212                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 213                                             menu_bar->m_widget,
 214                                             0, 0, m_width, wxMENU_HEIGHT );
 215                         menu_bar->SetInvokingWindow( child_frame );
 216                     }
 217                     visible_child_menu = true;
 218                 }
 219                 else
 220                 {
 221                     if (menu_bar->Show(false))
 222                     {
 223                         menu_bar->UnsetInvokingWindow( child_frame );
 224                     }
 225                 }
 226             }
 227         }
 228
 229         node = node->GetNext();
 230     }
 231
 232     /* show/hide parent menu bar as required */
 233     if ((m_frameMenuBar) &&
 234         (m_frameMenuBar->IsShown() == visible_child_menu))
 235     {
 236         if (visible_child_menu)
 237         {
 238             m_frameMenuBar->Show( false );
 239             m_frameMenuBar->UnsetInvokingWindow( this );
 240         }
 241         else
 242         {
 243             m_frameMenuBar->Show( true );
 244             m_frameMenuBar->SetInvokingWindow( this );
 245
 246             m_frameMenuBar->m_width = m_width;
 247             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 248             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 249                                 m_frameMenuBar->m_widget,
 250                                 0, 0, m_width, wxMENU_HEIGHT );
 251         }
 252     }
 253 }
 254
 255 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 256 {
 257     wxFrame::DoGetClientSize( width, height );
 258 }
 259
 260 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 261 {
 262     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 263
 264     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 265     if (!notebook) return (wxMDIChildFrame*) NULL;
 266
 267     gint i = gtk_notebook_get_current_page( notebook );
 268     if (i < 0) return (wxMDIChildFrame*) NULL;
 269
 270     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 271     if (!page) return (wxMDIChildFrame*) NULL;
 272
 273     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 274     while (node)
 275     {
 276         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 277
 278         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
 279
 280         if (child_frame->m_page == page)
 281             return child_frame;
 282         node = node->GetNext();
 283     }
 284
 285     return (wxMDIChildFrame*) NULL;
 286 }
 287
 288 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 289 {
 290     return m_clientWindow;
 291 }
 292
 293 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 294 {
 295     m_clientWindow = new wxMDIClientWindow( this );
 296     return m_clientWindow;
 297 }
 298
 299 void wxMDIParentFrame::ActivateNext()
 300 {
 301     if (m_clientWindow)
 302       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 303 }
 304
 305 void wxMDIParentFrame::ActivatePrevious()
 306 {
 307     if (m_clientWindow)
 308       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 309 }
 310
 311 //-----------------------------------------------------------------------------
 312 // wxMDIChildFrame
 313 //-----------------------------------------------------------------------------
 314
 315 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 316
 317 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 318     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 319     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 320 END_EVENT_TABLE()
 321
 322 wxMDIChildFrame::wxMDIChildFrame()
 323 {
 324     m_menuBar = (wxMenuBar *) NULL;
 325     m_page = (GtkNotebookPage *) NULL;
 326 }
 327
 328 wxMDIChildFrame::wxMDIChildFrame( 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_menuBar = (wxMenuBar *) NULL;
 334     m_page = (GtkNotebookPage *) NULL;
 335     Create( parent, id, title, wxDefaultPosition, size, style, name );
 336 }
 337
 338 wxMDIChildFrame::~wxMDIChildFrame()
 339 {
 340     if (m_menuBar)
 341         delete m_menuBar;
 342 }
 343
 344 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 345       wxWindowID id, const wxString& title,
 346       const wxPoint& WXUNUSED(pos), const wxSize& size,
 347       long style, const wxString& name )
 348 {
 349     m_title = title;
 350
 351     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 352 }
 353
 354 void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 355 {
 356     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 357 }
 358
 359 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 360 {
 361     wxWindow::DoSetClientSize( width, height );
 362 }
 363
 364 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 365 {
 366     wxWindow::DoGetClientSize( width, height );
 367 }
 368
 369 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 370 {
 371     wxWindow::AddChild(child);
 372 }
 373
 374 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 375 {
 376     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 377
 378     m_menuBar = menu_bar;
 379
 380     if (m_menuBar)
 381     {
 382         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 383
 384         m_menuBar->SetParent( mdi_frame );
 385
 386         /* insert the invisible menu bar into the _parent_ mdi frame */
 387         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 388                          m_menuBar->m_widget,
 389                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 390     }
 391 }
 392
 393 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 394 {
 395     return m_menuBar;
 396 }
 397
 398 void wxMDIChildFrame::Activate()
 399 {
 400     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 401     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 402     gint pageno = gtk_notebook_page_num( notebook, m_widget );
 403     gtk_notebook_set_page( notebook, pageno );
 404 }
 405
 406 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 407 {
 408 }
 409
 410 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 411 {
 412 #if wxUSE_STATUSBAR
 413     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 414     if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
 415     {
 416         // we don't have any help text for this item, but may be the MDI frame
 417         // does?
 418         mdi_frame->OnMenuHighlight(event);
 419     }
 420 #endif // wxUSE_STATUSBAR
 421 }
 422
 423 void wxMDIChildFrame::SetTitle( const wxString &title )
 424 {
 425     if ( title == m_title )
 426         return;
 427
 428     m_title = title;
 429
 430     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 431     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 432     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 433 }
 434
 435 //-----------------------------------------------------------------------------
 436 // "size_allocate"
 437 //-----------------------------------------------------------------------------
 438
 439 extern "C" {
 440 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 441 {
 442     if (g_isIdle) wxapp_install_idle_handler();
 443
 444     if ((win->m_x == alloc->x) &&
 445         (win->m_y == alloc->y) &&
 446         (win->m_width == alloc->width) &&
 447         (win->m_height == alloc->height) &&
 448         (win->m_sizeSet))
 449     {
 450         return;
 451     }
 452
 453     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 454 }
 455 }
 456
 457 //-----------------------------------------------------------------------------
 458 // InsertChild callback for wxMDIClientWindow
 459 //-----------------------------------------------------------------------------
 460
 461 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 462 {
 463     wxString s = child->GetTitle();
 464     if (s.IsNull()) s = _("MDI child");
 465
 466     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 467     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 468
 469     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 470       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 471
 472     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 473
 474     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 475
 476     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 477
 478     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 479     parent_frame->m_justInserted = true;
 480 }
 481
 482 //-----------------------------------------------------------------------------
 483 // wxMDIClientWindow
 484 //-----------------------------------------------------------------------------
 485
 486 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 487
 488 wxMDIClientWindow::wxMDIClientWindow()
 489 {
 490 }
 491
 492 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 493 {
 494     CreateClient( parent, style );
 495 }
 496
 497 wxMDIClientWindow::~wxMDIClientWindow()
 498 {
 499
 500 }
 501
 502 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 503 {
 504     m_needParent = true;
 505
 506     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 507
 508     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 509         !CreateBase( parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 510     {
 511         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 512         return false;
 513     }
 514
 515     m_widget = gtk_notebook_new();
 516
 517     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 518       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 519
 520     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 521
 522     m_parent->DoAddChild( this );
 523
 524     PostCreation();
 525
 526     Show( true );
 527
 528     return true;
 529 }
 530
 531 #endif