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 #ifdef __GNUG__
  11 #pragma implementation "mdi.h"
  12 #endif
  13
  14 #include "wx/mdi.h"
  15
  16 #if wxUSE_MDI_ARCHITECTURE
  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 static void
  52 gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
  53                               GtkNotebookPage *page,
  54                               gint WXUNUSED(page_num),
  55                               wxMDIParentFrame *parent )
  56 {
  57     if (g_isIdle)
  58         wxapp_install_idle_handler();
  59
  60     // send deactivate event to old child
  61
  62     wxMDIChildFrame *child = parent->GetActiveChild();
  63     if (child)
  64     {
  65         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
  66         event1.SetEventObject( child);
  67         child->GetEventHandler()->ProcessEvent( event1 );
  68     }
  69
  70     // send activate event to new child
  71
  72     wxMDIClientWindow *client_window = parent->GetClientWindow();
  73     if (!client_window)
  74         return;
  75
  76     child = (wxMDIChildFrame*) NULL;
  77
  78     wxWindowList::Node  *node = client_window->GetChildren().GetFirst();
  79     while (node)
  80     {
  81         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
  82
  83         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
  84
  85         if (child_frame->m_page == page)
  86         {
  87             child = child_frame;
  88             break;
  89         }
  90         node = node->GetNext();
  91     }
  92
  93     if (!child)
  94          return;
  95
  96     wxActivateEvent event2( wxEVT_ACTIVATE, true, child->GetId() );
  97     event2.SetEventObject( child);
  98     child->GetEventHandler()->ProcessEvent( event2 );
  99 }
 100
 101 //-----------------------------------------------------------------------------
 102 // wxMDIParentFrame
 103 //-----------------------------------------------------------------------------
 104
 105 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 106
 107 void wxMDIParentFrame::Init()
 108 {
 109     m_justInserted = false;
 110     m_clientWindow = (wxMDIClientWindow *) NULL;
 111 }
 112
 113 wxMDIParentFrame::~wxMDIParentFrame()
 114 {
 115 }
 116
 117 bool wxMDIParentFrame::Create(wxWindow *parent,
 118                               wxWindowID id,
 119                               const wxString& title,
 120                               const wxPoint& pos,
 121                               const wxSize& size,
 122                               long style,
 123                               const wxString& name )
 124 {
 125     wxFrame::Create( parent, id, title, pos, size, style, name );
 126
 127     OnCreateClient();
 128
 129     return true;
 130 }
 131
 132 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 133 {
 134     wxFrame::GtkOnSize( x, y, width, height );
 135
 136     wxMDIChildFrame *child_frame = GetActiveChild();
 137     if (!child_frame) return;
 138
 139     wxMenuBar *menu_bar = child_frame->m_menuBar;
 140     if (!menu_bar) return;
 141     if (!menu_bar->m_widget) return;
 142
 143     menu_bar->m_x = 0;
 144     menu_bar->m_y = 0;
 145     menu_bar->m_width = m_width;
 146     menu_bar->m_height = wxMENU_HEIGHT;
 147     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 148                           menu_bar->m_widget,
 149                           0, 0, m_width, wxMENU_HEIGHT );
 150 }
 151
 152 void wxMDIParentFrame::OnInternalIdle()
 153 {
 154     /* if a an MDI child window has just been inserted
 155        it has to be brought to the top in idle time. we
 156        simply set the last notebook page active as new
 157        pages can only be appended at the end */
 158
 159     if (m_justInserted)
 160     {
 161         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 162         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 163
 164         m_justInserted = false;
 165         return;
 166     }
 167
 168     wxFrame::OnInternalIdle();
 169
 170     wxMDIChildFrame *active_child_frame = GetActiveChild();
 171     bool visible_child_menu = false;
 172
 173     wxWindowList::Node     *node = m_clientWindow->GetChildren().GetFirst();
 174     while (node)
 175     {
 176         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 177
 178         if ( child_frame )
 179         {
 180             wxMenuBar *menu_bar = child_frame->m_menuBar;
 181             if ( menu_bar )
 182             {
 183                 if (child_frame == active_child_frame)
 184                 {
 185                     if (menu_bar->Show(true))
 186                     {
 187                         menu_bar->m_width = m_width;
 188                         menu_bar->m_height = wxMENU_HEIGHT;
 189                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 190                                             menu_bar->m_widget,
 191                                             0, 0, m_width, wxMENU_HEIGHT );
 192                         menu_bar->SetInvokingWindow( child_frame );
 193                     }
 194                     visible_child_menu = true;
 195                 }
 196                 else
 197                 {
 198                     if (menu_bar->Show(false))
 199                     {
 200                         menu_bar->UnsetInvokingWindow( child_frame );
 201                     }
 202                 }
 203             }
 204         }
 205
 206         node = node->GetNext();
 207     }
 208
 209     /* show/hide parent menu bar as required */
 210     if ((m_frameMenuBar) &&
 211         (m_frameMenuBar->IsShown() == visible_child_menu))
 212     {
 213         if (visible_child_menu)
 214         {
 215             m_frameMenuBar->Show( false );
 216             m_frameMenuBar->UnsetInvokingWindow( this );
 217         }
 218         else
 219         {
 220             m_frameMenuBar->Show( true );
 221             m_frameMenuBar->SetInvokingWindow( this );
 222
 223             m_frameMenuBar->m_width = m_width;
 224             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 225             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 226                                 m_frameMenuBar->m_widget,
 227                                 0, 0, m_width, wxMENU_HEIGHT );
 228         }
 229     }
 230 }
 231
 232 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 233 {
 234     wxFrame::DoGetClientSize( width, height );
 235 }
 236
 237 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 238 {
 239     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 240
 241     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 242     if (!notebook) return (wxMDIChildFrame*) NULL;
 243
 244     gint i = gtk_notebook_get_current_page( notebook );
 245     if (i < 0) return (wxMDIChildFrame*) NULL;
 246
 247     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 248     if (!page) return (wxMDIChildFrame*) NULL;
 249
 250     wxWindowList::Node  *node = m_clientWindow->GetChildren().GetFirst();
 251     while (node)
 252     {
 253         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 254
 255         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
 256
 257         if (child_frame->m_page == page)
 258             return child_frame;
 259         node = node->GetNext();
 260     }
 261
 262     return (wxMDIChildFrame*) NULL;
 263 }
 264
 265 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 266 {
 267     return m_clientWindow;
 268 }
 269
 270 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 271 {
 272     m_clientWindow = new wxMDIClientWindow( this );
 273     return m_clientWindow;
 274 }
 275
 276 void wxMDIParentFrame::ActivateNext()
 277 {
 278     if (m_clientWindow)
 279       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 280 }
 281
 282 void wxMDIParentFrame::ActivatePrevious()
 283 {
 284     if (m_clientWindow)
 285       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 286 }
 287
 288 //-----------------------------------------------------------------------------
 289 // wxMDIChildFrame
 290 //-----------------------------------------------------------------------------
 291
 292 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 293
 294 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 295     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 296     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 297 END_EVENT_TABLE()
 298
 299 wxMDIChildFrame::wxMDIChildFrame()
 300 {
 301     m_menuBar = (wxMenuBar *) NULL;
 302     m_page = (GtkNotebookPage *) NULL;
 303 }
 304
 305 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 306       wxWindowID id, const wxString& title,
 307       const wxPoint& WXUNUSED(pos), const wxSize& size,
 308       long style, const wxString& name )
 309 {
 310     m_menuBar = (wxMenuBar *) NULL;
 311     m_page = (GtkNotebookPage *) NULL;
 312     Create( parent, id, title, wxDefaultPosition, size, style, name );
 313 }
 314
 315 wxMDIChildFrame::~wxMDIChildFrame()
 316 {
 317     if (m_menuBar)
 318         delete m_menuBar;
 319 }
 320
 321 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 322       wxWindowID id, const wxString& title,
 323       const wxPoint& WXUNUSED(pos), const wxSize& size,
 324       long style, const wxString& name )
 325 {
 326     m_title = title;
 327
 328     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 329 }
 330
 331 void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 332 {
 333     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 334 }
 335
 336 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 337 {
 338     wxWindow::DoSetClientSize( width, height );
 339 }
 340
 341 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 342 {
 343     wxWindow::DoGetClientSize( width, height );
 344 }
 345
 346 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 347 {
 348     wxWindow::AddChild(child);
 349 }
 350
 351 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 352 {
 353     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 354
 355     m_menuBar = menu_bar;
 356
 357     if (m_menuBar)
 358     {
 359         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 360
 361         m_menuBar->SetParent( mdi_frame );
 362
 363         /* insert the invisible menu bar into the _parent_ mdi frame */
 364         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 365                          m_menuBar->m_widget,
 366                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 367     }
 368 }
 369
 370 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 371 {
 372     return m_menuBar;
 373 }
 374
 375 void wxMDIChildFrame::Activate()
 376 {
 377     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 378     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 379     gint pageno = gtk_notebook_page_num( notebook, m_widget );
 380     gtk_notebook_set_page( notebook, pageno );
 381 }
 382
 383 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 384 {
 385 }
 386
 387 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 388 {
 389 #if wxUSE_STATUSBAR
 390     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 391     if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
 392     {
 393         // we don't have any help text for this item, but may be the MDI frame
 394         // does?
 395         mdi_frame->OnMenuHighlight(event);
 396     }
 397 #endif // wxUSE_STATUSBAR
 398 }
 399
 400 void wxMDIChildFrame::SetTitle( const wxString &title )
 401 {
 402     if ( title == m_title )
 403         return;
 404
 405     m_title = title;
 406
 407     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 408     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 409     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 410 }
 411
 412 //-----------------------------------------------------------------------------
 413 // "size_allocate"
 414 //-----------------------------------------------------------------------------
 415
 416 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 417 {
 418     if (g_isIdle) wxapp_install_idle_handler();
 419
 420     if ((win->m_x == alloc->x) &&
 421         (win->m_y == alloc->y) &&
 422         (win->m_width == alloc->width) &&
 423         (win->m_height == alloc->height) &&
 424         (win->m_sizeSet))
 425     {
 426         return;
 427     }
 428
 429     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 430 }
 431
 432 //-----------------------------------------------------------------------------
 433 // InsertChild callback for wxMDIClientWindow
 434 //-----------------------------------------------------------------------------
 435
 436 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 437 {
 438     wxString s = child->m_title;
 439     if (s.IsNull()) s = _("MDI child");
 440
 441     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 442     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 443
 444     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 445       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 446
 447     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 448
 449     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 450
 451     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 452
 453     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 454     parent_frame->m_justInserted = true;
 455 }
 456
 457 //-----------------------------------------------------------------------------
 458 // wxMDIClientWindow
 459 //-----------------------------------------------------------------------------
 460
 461 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 462
 463 wxMDIClientWindow::wxMDIClientWindow()
 464 {
 465 }
 466
 467 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 468 {
 469     CreateClient( parent, style );
 470 }
 471
 472 wxMDIClientWindow::~wxMDIClientWindow()
 473 {
 474 }
 475
 476 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 477 {
 478     m_needParent = true;
 479
 480     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 481
 482     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 483         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 484     {
 485         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 486         return false;
 487     }
 488
 489     m_widget = gtk_notebook_new();
 490
 491     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 492       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 493
 494     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 495
 496     m_parent->DoAddChild( this );
 497
 498     PostCreation();
 499
 500     Show( true );
 501
 502     return true;
 503 }
 504
 505 #endif