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
  22 #include <glib.h>
  23 #include <gdk/gdk.h>
  24 #include <gtk/gtk.h>
  25 #include "wx/gtk/win_gtk.h"
  26
  27 //-----------------------------------------------------------------------------
  28 // constants
  29 //-----------------------------------------------------------------------------
  30
  31 const int wxMENU_HEIGHT = 27;
  32
  33 //-----------------------------------------------------------------------------
  34 // idle system
  35 //-----------------------------------------------------------------------------
  36
  37 extern void wxapp_install_idle_handler();
  38 extern bool g_isIdle;
  39
  40 //-----------------------------------------------------------------------------
  41 // globals
  42 //-----------------------------------------------------------------------------
  43
  44 extern wxList wxPendingDelete;
  45
  46 //-----------------------------------------------------------------------------
  47 // "switch_page"
  48 //-----------------------------------------------------------------------------
  49
  50 static void
  51 gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
  52                               GtkNotebookPage *page,
  53                               gint WXUNUSED(page_num),
  54                               wxMDIParentFrame *parent )
  55 {
  56     if (g_isIdle)
  57         wxapp_install_idle_handler();
  58
  59     // send deactivate event to old child
  60
  61     wxMDIChildFrame *child = parent->GetActiveChild();
  62     if (child)
  63     {
  64         wxActivateEvent event1( wxEVT_ACTIVATE, FALSE, child->GetId() );
  65         event1.SetEventObject( child);
  66         child->GetEventHandler()->ProcessEvent( event1 );
  67     }
  68
  69     // send activate event to new child
  70
  71     wxMDIClientWindow *client_window = parent->GetClientWindow();
  72     if (!client_window)
  73         return;
  74
  75     child = (wxMDIChildFrame*) NULL;
  76
  77     wxNode *node = client_window->GetChildren().First();
  78     while (node)
  79     {
  80         wxMDIChildFrame *child_frame = (wxMDIChildFrame *)node->Data();
  81         if (child_frame->m_page == page)
  82         {
  83             child = child_frame;
  84             break;
  85         }
  86         node = node->Next();
  87     }
  88
  89     if (!child)
  90          return;
  91
  92     wxActivateEvent event2( wxEVT_ACTIVATE, TRUE, child->GetId() );
  93     event2.SetEventObject( child);
  94     child->GetEventHandler()->ProcessEvent( event2 );
  95 }
  96
  97 //-----------------------------------------------------------------------------
  98 // wxMDIParentFrame
  99 //-----------------------------------------------------------------------------
 100
 101 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 102
 103 void wxMDIParentFrame::Init()
 104 {
 105     m_justInserted = FALSE;
 106     m_clientWindow = (wxMDIClientWindow *) NULL;
 107 }
 108
 109 wxMDIParentFrame::~wxMDIParentFrame()
 110 {
 111 }
 112
 113 bool wxMDIParentFrame::Create(wxWindow *parent,
 114                               wxWindowID id,
 115                               const wxString& title,
 116                               const wxPoint& pos,
 117                               const wxSize& size,
 118                               long style,
 119                               const wxString& name )
 120 {
 121     wxFrame::Create( parent, id, title, pos, size, style, name );
 122
 123     OnCreateClient();
 124
 125     return TRUE;
 126 }
 127
 128 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 129 {
 130     wxFrame::GtkOnSize( x, y, width, height );
 131
 132     wxMDIChildFrame *child_frame = GetActiveChild();
 133     if (!child_frame) return;
 134
 135     wxMenuBar *menu_bar = child_frame->m_menuBar;
 136     if (!menu_bar) return;
 137     if (!menu_bar->m_widget) return;
 138
 139     menu_bar->m_x = 0;
 140     menu_bar->m_y = 0;
 141     menu_bar->m_width = m_width;
 142     menu_bar->m_height = wxMENU_HEIGHT;
 143     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 144                           menu_bar->m_widget,
 145                           0, 0, m_width, wxMENU_HEIGHT );
 146 }
 147
 148 void wxMDIParentFrame::OnInternalIdle()
 149 {
 150     /* if a an MDI child window has just been inserted
 151        it has to be brought to the top in idle time. we
 152        simply set the last notebook page active as new
 153        pages can only be appended at the end */
 154
 155     if (m_justInserted)
 156     {
 157         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 158         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 159
 160         m_justInserted = FALSE;
 161         return;
 162     }
 163
 164     wxFrame::OnInternalIdle();
 165
 166     wxMDIChildFrame *active_child_frame = GetActiveChild();
 167     bool visible_child_menu = FALSE;
 168
 169     wxNode *node = m_clientWindow->GetChildren().First();
 170     while (node)
 171     {
 172         wxObject *child = node->Data();
 173         wxMDIChildFrame *child_frame = wxDynamicCast(child, wxMDIChildFrame);
 174         if ( child_frame )
 175         {
 176             wxMenuBar *menu_bar = child_frame->m_menuBar;
 177             if ( menu_bar )
 178             {
 179                 if (child_frame == active_child_frame)
 180                 {
 181                     if (menu_bar->Show(TRUE))
 182                     {
 183                         menu_bar->m_width = m_width;
 184                         menu_bar->m_height = wxMENU_HEIGHT;
 185                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 186                                             menu_bar->m_widget,
 187                                             0, 0, m_width, wxMENU_HEIGHT );
 188                         menu_bar->SetInvokingWindow( child_frame );
 189                     }
 190                     visible_child_menu = TRUE;
 191                 }
 192                 else
 193                 {
 194                     if (menu_bar->Show(FALSE))
 195                     {
 196                         menu_bar->UnsetInvokingWindow( child_frame );
 197                     }
 198                 }
 199             }
 200         }
 201
 202         node = node->Next();
 203     }
 204
 205     /* show/hide parent menu bar as required */
 206     if ((m_frameMenuBar) &&
 207         (m_frameMenuBar->IsShown() == visible_child_menu))
 208     {
 209         if (visible_child_menu)
 210         {
 211             m_frameMenuBar->Show( FALSE );
 212             m_frameMenuBar->UnsetInvokingWindow( this );
 213         }
 214         else
 215         {
 216             m_frameMenuBar->Show( TRUE );
 217             m_frameMenuBar->SetInvokingWindow( this );
 218
 219             m_frameMenuBar->m_width = m_width;
 220             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 221             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 222                                 m_frameMenuBar->m_widget,
 223                                 0, 0, m_width, wxMENU_HEIGHT );
 224         }
 225     }
 226 }
 227
 228 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 229 {
 230     wxFrame::DoGetClientSize( width, height );
 231 }
 232
 233 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 234 {
 235     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 236
 237     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 238     if (!notebook) return (wxMDIChildFrame*) NULL;
 239
 240 #if (GTK_MINOR_VERSION > 0)
 241     gint i = gtk_notebook_get_current_page( notebook );
 242 #else
 243     gint i = gtk_notebook_current_page( notebook );
 244 #endif
 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     wxNode *node = m_clientWindow->GetChildren().First();
 251     while (node)
 252     {
 253         wxMDIChildFrame *child_frame = (wxMDIChildFrame *)node->Data();
 254         if (child_frame->m_page == page)
 255             return child_frame;
 256         node = node->Next();
 257     }
 258
 259     return (wxMDIChildFrame*) NULL;
 260 }
 261
 262 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 263 {
 264     return m_clientWindow;
 265 }
 266
 267 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 268 {
 269     m_clientWindow = new wxMDIClientWindow( this );
 270     return m_clientWindow;
 271 }
 272
 273 void wxMDIParentFrame::ActivateNext()
 274 {
 275     if (m_clientWindow)
 276       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 277 }
 278
 279 void wxMDIParentFrame::ActivatePrevious()
 280 {
 281     if (m_clientWindow)
 282       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 283 }
 284
 285 //-----------------------------------------------------------------------------
 286 // wxMDIChildFrame
 287 //-----------------------------------------------------------------------------
 288
 289 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 290
 291 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 292     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 293     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 294 END_EVENT_TABLE()
 295
 296 wxMDIChildFrame::wxMDIChildFrame()
 297 {
 298     m_menuBar = (wxMenuBar *) NULL;
 299     m_page = (GtkNotebookPage *) NULL;
 300     m_isFrame = FALSE;
 301 }
 302
 303 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 304       wxWindowID id, const wxString& title,
 305       const wxPoint& WXUNUSED(pos), const wxSize& size,
 306       long style, const wxString& name )
 307 {
 308     m_menuBar = (wxMenuBar *) NULL;
 309     m_page = (GtkNotebookPage *) NULL;
 310     m_isFrame = FALSE;
 311     Create( parent, id, title, wxDefaultPosition, size, style, name );
 312 }
 313
 314 wxMDIChildFrame::~wxMDIChildFrame()
 315 {
 316     if (m_menuBar)
 317         delete m_menuBar;
 318 }
 319
 320 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 321       wxWindowID id, const wxString& title,
 322       const wxPoint& WXUNUSED(pos), const wxSize& size,
 323       long style, const wxString& name )
 324 {
 325     m_title = title;
 326
 327     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 328 }
 329
 330 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 331 {
 332     wxWindow::DoGetClientSize( width, height );
 333 }
 334
 335 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 336 {
 337     wxWindow::AddChild(child);
 338 }
 339
 340 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 341 {
 342     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 343
 344     m_menuBar = menu_bar;
 345
 346     if (m_menuBar)
 347     {
 348         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 349
 350         m_menuBar->SetParent( mdi_frame );
 351
 352         /* insert the invisible menu bar into the _parent_ mdi frame */
 353         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 354                          m_menuBar->m_widget,
 355                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 356     }
 357 }
 358
 359 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 360 {
 361     return m_menuBar;
 362 }
 363
 364 void wxMDIChildFrame::Activate()
 365 {
 366 #if (GTK_MINOR_VERSION > 0)
 367     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 368     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 369     gint pageno = gtk_notebook_page_num( notebook, m_page->child );
 370     gtk_notebook_set_page( notebook, pageno );
 371 #else
 372     // the only way I can see to do this under gtk+ 1.0.X would
 373     // be to keep track of page numbers, start at first and
 374     // do "next" enough times to get to this page number - messy
 375     // - J. Russell Smyth
 376 #endif
 377 }
 378
 379 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 380 {
 381 }
 382
 383 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 384 {
 385 #if wxUSE_STATUSBAR
 386     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 387     if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
 388     {
 389         // we don't have any help text for this item, but may be the MDI frame
 390         // does?
 391         mdi_frame->OnMenuHighlight(event);
 392     }
 393 #endif // wxUSE_STATUSBAR
 394 }
 395
 396 void wxMDIChildFrame::SetTitle( const wxString &title )
 397 {
 398     if ( title == m_title )
 399         return;
 400
 401     m_title = title;
 402
 403     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 404     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 405     gtk_notebook_set_tab_label_text(notebook, m_page->child, title.mbc_str());
 406 }
 407
 408 //-----------------------------------------------------------------------------
 409 // "size_allocate"
 410 //-----------------------------------------------------------------------------
 411
 412 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 413 {
 414     if (g_isIdle) wxapp_install_idle_handler();
 415
 416     if ((win->m_x == alloc->x) &&
 417         (win->m_y == alloc->y) &&
 418         (win->m_width == alloc->width) &&
 419         (win->m_height == alloc->height) &&
 420         (win->m_sizeSet))
 421     {
 422         return;
 423     }
 424
 425     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 426 }
 427
 428 //-----------------------------------------------------------------------------
 429 // InsertChild callback for wxMDIClientWindow
 430 //-----------------------------------------------------------------------------
 431
 432 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 433 {
 434     wxString s = child->m_title;
 435     if (s.IsNull()) s = _("MDI child");
 436
 437     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 438     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 439
 440     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 441       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 442
 443     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 444
 445     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 446
 447     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 448
 449     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 450     parent_frame->m_justInserted = TRUE;
 451 }
 452
 453 //-----------------------------------------------------------------------------
 454 // wxMDIClientWindow
 455 //-----------------------------------------------------------------------------
 456
 457 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 458
 459 wxMDIClientWindow::wxMDIClientWindow()
 460 {
 461 }
 462
 463 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 464 {
 465     CreateClient( parent, style );
 466 }
 467
 468 wxMDIClientWindow::~wxMDIClientWindow()
 469 {
 470 }
 471
 472 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 473 {
 474     m_needParent = TRUE;
 475
 476     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 477
 478     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 479         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 480     {
 481         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 482         return FALSE;
 483     }
 484
 485     m_widget = gtk_notebook_new();
 486
 487     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 488       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 489
 490     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 491
 492     m_parent->DoAddChild( this );
 493
 494     PostCreation();
 495
 496     Show( TRUE );
 497
 498     return TRUE;
 499 }
 500
 501 #endif