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 extern "C" {
  56 static void
  57 gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
  58                               GtkNotebookPage *page,
  59                               gint WXUNUSED(page_num),
  60                               wxMDIParentFrame *parent )
  61 {
  62     if (g_isIdle)
  63         wxapp_install_idle_handler();
  64
  65     // send deactivate event to old child
  66
  67     wxMDIChildFrame *child = parent->GetActiveChild();
  68     if (child)
  69     {
  70         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
  71         event1.SetEventObject( child);
  72         child->GetEventHandler()->ProcessEvent( event1 );
  73     }
  74
  75     // send activate event to new child
  76
  77     wxMDIClientWindow *client_window = parent->GetClientWindow();
  78     if (!client_window)
  79         return;
  80
  81     child = (wxMDIChildFrame*) NULL;
  82
  83     wxWindowList::compatibility_iterator node = client_window->GetChildren().GetFirst();
  84     while (node)
  85     {
  86         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
  87         // CE: we come here in the destructor with a null child_frame - I think because
  88         // gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page", (see below)
  89         // isn't deleted early enough
  90         if (!child_frame)
  91           return ;
  92
  93         if (child_frame->m_page == page)
  94         {
  95             child = child_frame;
  96             break;
  97         }
  98         node = node->GetNext();
  99     }
 100
 101     if (!child)
 102          return;
 103
 104     wxActivateEvent event2( wxEVT_ACTIVATE, true, child->GetId() );
 105     event2.SetEventObject( child);
 106     child->GetEventHandler()->ProcessEvent( event2 );
 107 }
 108 }
 109
 110 //-----------------------------------------------------------------------------
 111 // wxMDIParentFrame
 112 //-----------------------------------------------------------------------------
 113
 114 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 115
 116 void wxMDIParentFrame::Init()
 117 {
 118     m_justInserted = false;
 119     m_clientWindow = (wxMDIClientWindow *) NULL;
 120 }
 121
 122 wxMDIParentFrame::~wxMDIParentFrame()
 123 {
 124 }
 125
 126 bool wxMDIParentFrame::Create(wxWindow *parent,
 127                               wxWindowID id,
 128                               const wxString& title,
 129                               const wxPoint& pos,
 130                               const wxSize& size,
 131                               long style,
 132                               const wxString& name )
 133 {
 134     wxFrame::Create( parent, id, title, pos, size, style, name );
 135
 136     OnCreateClient();
 137
 138     return true;
 139 }
 140
 141 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 142 {
 143     wxFrame::GtkOnSize( x, y, width, height );
 144
 145     wxMDIChildFrame *child_frame = GetActiveChild();
 146     if (!child_frame) return;
 147
 148     wxMenuBar *menu_bar = child_frame->m_menuBar;
 149     if (!menu_bar) return;
 150     if (!menu_bar->m_widget) return;
 151
 152     menu_bar->m_x = 0;
 153     menu_bar->m_y = 0;
 154     menu_bar->m_width = m_width;
 155     menu_bar->m_height = wxMENU_HEIGHT;
 156     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 157                           menu_bar->m_widget,
 158                           0, 0, m_width, wxMENU_HEIGHT );
 159 }
 160
 161 void wxMDIParentFrame::OnInternalIdle()
 162 {
 163     /* if a an MDI child window has just been inserted
 164        it has to be brought to the top in idle time. we
 165        simply set the last notebook page active as new
 166        pages can only be appended at the end */
 167
 168     if (m_justInserted)
 169     {
 170         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 171         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 172
 173         /* need to set the menubar of the child */
 174         wxMDIChildFrame *active_child_frame = GetActiveChild();
 175         if (active_child_frame != NULL)
 176         {
 177             wxMenuBar *menu_bar = active_child_frame->m_menuBar;
 178             if (menu_bar)
 179             {
 180                 menu_bar->m_width = m_width;
 181                 menu_bar->m_height = wxMENU_HEIGHT;
 182                 gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 183                                     menu_bar->m_widget,
 184                                     0, 0, m_width, wxMENU_HEIGHT );
 185                 menu_bar->SetInvokingWindow(active_child_frame);
 186             }
 187         }
 188         m_justInserted = false;
 189         return;
 190     }
 191
 192     wxFrame::OnInternalIdle();
 193
 194     wxMDIChildFrame *active_child_frame = GetActiveChild();
 195     bool visible_child_menu = false;
 196
 197     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 198     while (node)
 199     {
 200         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 201
 202         if ( child_frame )
 203         {
 204             wxMenuBar *menu_bar = child_frame->m_menuBar;
 205             if ( menu_bar )
 206             {
 207                 if (child_frame == active_child_frame)
 208                 {
 209                     if (menu_bar->Show(true))
 210                     {
 211                         menu_bar->m_width = m_width;
 212                         menu_bar->m_height = wxMENU_HEIGHT;
 213                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 214                                             menu_bar->m_widget,
 215                                             0, 0, m_width, wxMENU_HEIGHT );
 216                         menu_bar->SetInvokingWindow( child_frame );
 217                     }
 218                     visible_child_menu = true;
 219                 }
 220                 else
 221                 {
 222                     if (menu_bar->Show(false))
 223                     {
 224                         menu_bar->UnsetInvokingWindow( child_frame );
 225                     }
 226                 }
 227             }
 228         }
 229
 230         node = node->GetNext();
 231     }
 232
 233     /* show/hide parent menu bar as required */
 234     if ((m_frameMenuBar) &&
 235         (m_frameMenuBar->IsShown() == visible_child_menu))
 236     {
 237         if (visible_child_menu)
 238         {
 239             m_frameMenuBar->Show( false );
 240             m_frameMenuBar->UnsetInvokingWindow( this );
 241         }
 242         else
 243         {
 244             m_frameMenuBar->Show( true );
 245             m_frameMenuBar->SetInvokingWindow( this );
 246
 247             m_frameMenuBar->m_width = m_width;
 248             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 249             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 250                                 m_frameMenuBar->m_widget,
 251                                 0, 0, m_width, wxMENU_HEIGHT );
 252         }
 253     }
 254 }
 255
 256 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 257 {
 258     wxFrame::DoGetClientSize( width, height );
 259 }
 260
 261 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 262 {
 263     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 264
 265     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 266     if (!notebook) return (wxMDIChildFrame*) NULL;
 267
 268     gint i = gtk_notebook_get_current_page( notebook );
 269     if (i < 0) return (wxMDIChildFrame*) NULL;
 270
 271     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 272     if (!page) return (wxMDIChildFrame*) NULL;
 273
 274     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 275     while (node)
 276     {
 277         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 278
 279         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
 280
 281         if (child_frame->m_page == page)
 282             return child_frame;
 283         node = node->GetNext();
 284     }
 285
 286     return (wxMDIChildFrame*) NULL;
 287 }
 288
 289 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 290 {
 291     return m_clientWindow;
 292 }
 293
 294 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 295 {
 296     m_clientWindow = new wxMDIClientWindow( this );
 297     return m_clientWindow;
 298 }
 299
 300 void wxMDIParentFrame::ActivateNext()
 301 {
 302     if (m_clientWindow)
 303       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 304 }
 305
 306 void wxMDIParentFrame::ActivatePrevious()
 307 {
 308     if (m_clientWindow)
 309       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 310 }
 311
 312 //-----------------------------------------------------------------------------
 313 // wxMDIChildFrame
 314 //-----------------------------------------------------------------------------
 315
 316 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 317
 318 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 319     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 320     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 321 END_EVENT_TABLE()
 322
 323 wxMDIChildFrame::wxMDIChildFrame()
 324 {
 325     m_menuBar = (wxMenuBar *) NULL;
 326     m_page = (GtkNotebookPage *) NULL;
 327 }
 328
 329 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 330       wxWindowID id, const wxString& title,
 331       const wxPoint& WXUNUSED(pos), const wxSize& size,
 332       long style, const wxString& name )
 333 {
 334     m_menuBar = (wxMenuBar *) NULL;
 335     m_page = (GtkNotebookPage *) NULL;
 336     Create( parent, id, title, wxDefaultPosition, size, style, name );
 337 }
 338
 339 wxMDIChildFrame::~wxMDIChildFrame()
 340 {
 341     if (m_menuBar)
 342         delete m_menuBar;
 343 }
 344
 345 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 346       wxWindowID id, const wxString& title,
 347       const wxPoint& WXUNUSED(pos), const wxSize& size,
 348       long style, const wxString& name )
 349 {
 350     m_title = title;
 351
 352     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 353 }
 354
 355 void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 356 {
 357     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 358 }
 359
 360 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 361 {
 362     wxWindow::DoSetClientSize( width, height );
 363 }
 364
 365 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 366 {
 367     wxWindow::DoGetClientSize( width, height );
 368 }
 369
 370 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 371 {
 372     wxWindow::AddChild(child);
 373 }
 374
 375 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 376 {
 377     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 378
 379     m_menuBar = menu_bar;
 380
 381     if (m_menuBar)
 382     {
 383         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 384
 385         m_menuBar->SetParent( mdi_frame );
 386
 387         /* insert the invisible menu bar into the _parent_ mdi frame */
 388         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 389                          m_menuBar->m_widget,
 390                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 391     }
 392 }
 393
 394 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 395 {
 396     return m_menuBar;
 397 }
 398
 399 void wxMDIChildFrame::Activate()
 400 {
 401     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 402     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 403     gint pageno = gtk_notebook_page_num( notebook, m_widget );
 404     gtk_notebook_set_page( notebook, pageno );
 405 }
 406
 407 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 408 {
 409 }
 410
 411 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 412 {
 413 #if wxUSE_STATUSBAR
 414     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 415     if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
 416     {
 417         // we don't have any help text for this item, but may be the MDI frame
 418         // does?
 419         mdi_frame->OnMenuHighlight(event);
 420     }
 421 #endif // wxUSE_STATUSBAR
 422 }
 423
 424 void wxMDIChildFrame::SetTitle( const wxString &title )
 425 {
 426     if ( title == m_title )
 427         return;
 428
 429     m_title = title;
 430
 431     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 432     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 433     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 434 }
 435
 436 //-----------------------------------------------------------------------------
 437 // "size_allocate"
 438 //-----------------------------------------------------------------------------
 439
 440 extern "C" {
 441 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 442 {
 443     if (g_isIdle) wxapp_install_idle_handler();
 444
 445     if ((win->m_x == alloc->x) &&
 446         (win->m_y == alloc->y) &&
 447         (win->m_width == alloc->width) &&
 448         (win->m_height == alloc->height) &&
 449         (win->m_sizeSet))
 450     {
 451         return;
 452     }
 453
 454     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 455 }
 456 }
 457
 458 //-----------------------------------------------------------------------------
 459 // InsertChild callback for wxMDIClientWindow
 460 //-----------------------------------------------------------------------------
 461
 462 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 463 {
 464     wxString s = child->m_title;
 465     if (s.IsNull()) s = _("MDI child");
 466
 467     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 468     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 469
 470     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 471       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 472
 473     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 474
 475     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 476
 477     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 478
 479     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 480     parent_frame->m_justInserted = true;
 481 }
 482
 483 //-----------------------------------------------------------------------------
 484 // wxMDIClientWindow
 485 //-----------------------------------------------------------------------------
 486
 487 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 488
 489 wxMDIClientWindow::wxMDIClientWindow()
 490 {
 491 }
 492
 493 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 494 {
 495     CreateClient( parent, style );
 496 }
 497
 498 wxMDIClientWindow::~wxMDIClientWindow()
 499 {
 500
 501 }
 502
 503 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 504 {
 505     m_needParent = true;
 506
 507     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 508
 509     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 510         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 511     {
 512         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 513         return false;
 514     }
 515
 516     m_widget = gtk_notebook_new();
 517
 518     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 519       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 520
 521     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 522
 523     m_parent->DoAddChild( this );
 524
 525     PostCreation();
 526
 527     Show( true );
 528
 529     return true;
 530 }
 531
 532 #endif