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 #if wxUSE_MDI
  14
  15 #include "wx/mdi.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19     #include "wx/menu.h"
  20     #include "wx/dialog.h"
  21 #endif
  22
  23 #include "wx/notebook.h"
  24 #include "wx/gtk/private.h"
  25
  26 #include <glib.h>
  27 #include <gdk/gdk.h>
  28 #include <gtk/gtk.h>
  29 #include "wx/gtk/win_gtk.h"
  30
  31 //-----------------------------------------------------------------------------
  32 // constants
  33 //-----------------------------------------------------------------------------
  34
  35 const int wxMENU_HEIGHT = 27;
  36
  37 //-----------------------------------------------------------------------------
  38 // globals
  39 //-----------------------------------------------------------------------------
  40
  41 //-----------------------------------------------------------------------------
  42 // "switch_page"
  43 //-----------------------------------------------------------------------------
  44
  45 extern "C" {
  46 static void
  47 gtk_mdi_page_change_callback( GtkNotebook *WXUNUSED(widget),
  48                               GtkNotebookPage *page,
  49                               gint WXUNUSED(page_num),
  50                               wxMDIParentFrame *parent )
  51 {
  52     if (g_isIdle)
  53         wxapp_install_idle_handler();
  54
  55     // send deactivate event to old child
  56
  57     wxMDIChildFrame *child = parent->GetActiveChild();
  58     if (child)
  59     {
  60         wxActivateEvent event1( wxEVT_ACTIVATE, false, child->GetId() );
  61         event1.SetEventObject( child);
  62         child->GetEventHandler()->ProcessEvent( event1 );
  63     }
  64
  65     // send activate event to new child
  66
  67     wxMDIClientWindow *client_window = parent->GetClientWindow();
  68     if (!client_window)
  69         return;
  70
  71     child = (wxMDIChildFrame*) NULL;
  72
  73     wxWindowList::compatibility_iterator node = client_window->GetChildren().GetFirst();
  74     while ( node )
  75     {
  76         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
  77
  78         // child_frame can be NULL when this is called from dtor, probably
  79         // because g_signal_connect (m_widget, "switch_page", (see below)
  80         // isn't deleted early enough
  81         if ( child_frame && child_frame->m_page == page )
  82         {
  83             child = child_frame;
  84             break;
  85         }
  86         node = node->GetNext();
  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 //-----------------------------------------------------------------------------
  99 // wxMDIParentFrame
 100 //-----------------------------------------------------------------------------
 101
 102 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
 103
 104 void wxMDIParentFrame::Init()
 105 {
 106     m_justInserted = false;
 107     m_clientWindow = (wxMDIClientWindow *) NULL;
 108 }
 109
 110 wxMDIParentFrame::~wxMDIParentFrame()
 111 {
 112 }
 113
 114 bool wxMDIParentFrame::Create(wxWindow *parent,
 115                               wxWindowID id,
 116                               const wxString& title,
 117                               const wxPoint& pos,
 118                               const wxSize& size,
 119                               long style,
 120                               const wxString& name )
 121 {
 122     wxFrame::Create( parent, id, title, pos, size, style, name );
 123
 124     OnCreateClient();
 125
 126     return true;
 127 }
 128
 129 void wxMDIParentFrame::GtkOnSize()
 130 {
 131     wxFrame::GtkOnSize();
 132
 133     wxMDIChildFrame *child_frame = GetActiveChild();
 134     if (!child_frame) return;
 135
 136     wxMenuBar *menu_bar = child_frame->m_menuBar;
 137     if (!menu_bar) return;
 138     if (!menu_bar->m_widget) return;
 139
 140     menu_bar->m_x = 0;
 141     menu_bar->m_y = 0;
 142     menu_bar->m_width = m_width;
 143     menu_bar->m_height = wxMENU_HEIGHT;
 144     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 145                           menu_bar->m_widget,
 146                           0, 0, m_width, wxMENU_HEIGHT );
 147 }
 148
 149 void wxMDIParentFrame::OnInternalIdle()
 150 {
 151     /* if a an MDI child window has just been inserted
 152        it has to be brought to the top in idle time. we
 153        simply set the last notebook page active as new
 154        pages can only be appended at the end */
 155
 156     if (m_justInserted)
 157     {
 158         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 159         gtk_notebook_set_current_page( notebook, g_list_length( notebook->children ) - 1 );
 160
 161         /* need to set the menubar of the child */
 162         wxMDIChildFrame *active_child_frame = GetActiveChild();
 163         if (active_child_frame != NULL)
 164         {
 165             wxMenuBar *menu_bar = active_child_frame->m_menuBar;
 166             if (menu_bar)
 167             {
 168                 menu_bar->m_width = m_width;
 169                 menu_bar->m_height = wxMENU_HEIGHT;
 170                 gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 171                                     menu_bar->m_widget,
 172                                     0, 0, m_width, wxMENU_HEIGHT );
 173                 menu_bar->SetInvokingWindow(active_child_frame);
 174             }
 175         }
 176         m_justInserted = false;
 177         return;
 178     }
 179
 180     wxFrame::OnInternalIdle();
 181
 182     wxMDIChildFrame *active_child_frame = GetActiveChild();
 183     bool visible_child_menu = false;
 184
 185     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 186     while (node)
 187     {
 188         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 189
 190         if ( child_frame )
 191         {
 192             wxMenuBar *menu_bar = child_frame->m_menuBar;
 193             if ( menu_bar )
 194             {
 195                 if (child_frame == active_child_frame)
 196                 {
 197                     if (menu_bar->Show(true))
 198                     {
 199                         menu_bar->m_width = m_width;
 200                         menu_bar->m_height = wxMENU_HEIGHT;
 201                         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 202                                             menu_bar->m_widget,
 203                                             0, 0, m_width, wxMENU_HEIGHT );
 204                         menu_bar->SetInvokingWindow( child_frame );
 205                     }
 206                     visible_child_menu = true;
 207                 }
 208                 else
 209                 {
 210                     if (menu_bar->Show(false))
 211                     {
 212                         menu_bar->UnsetInvokingWindow( child_frame );
 213                     }
 214                 }
 215             }
 216         }
 217
 218         node = node->GetNext();
 219     }
 220
 221     /* show/hide parent menu bar as required */
 222     if ((m_frameMenuBar) &&
 223         (m_frameMenuBar->IsShown() == visible_child_menu))
 224     {
 225         if (visible_child_menu)
 226         {
 227             m_frameMenuBar->Show( false );
 228             m_frameMenuBar->UnsetInvokingWindow( this );
 229         }
 230         else
 231         {
 232             m_frameMenuBar->Show( true );
 233             m_frameMenuBar->SetInvokingWindow( this );
 234
 235             m_frameMenuBar->m_width = m_width;
 236             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 237             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 238                                 m_frameMenuBar->m_widget,
 239                                 0, 0, m_width, wxMENU_HEIGHT );
 240         }
 241     }
 242 }
 243
 244 void wxMDIParentFrame::DoGetClientSize(int *width, int *height ) const
 245 {
 246     wxFrame::DoGetClientSize( width, height );
 247 }
 248
 249 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 250 {
 251     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 252
 253     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 254     if (!notebook) return (wxMDIChildFrame*) NULL;
 255
 256     gint i = gtk_notebook_get_current_page( notebook );
 257     if (i < 0) return (wxMDIChildFrame*) NULL;
 258
 259     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 260     if (!page) return (wxMDIChildFrame*) NULL;
 261
 262     wxWindowList::compatibility_iterator node = m_clientWindow->GetChildren().GetFirst();
 263     while (node)
 264     {
 265         wxMDIChildFrame *child_frame = wxDynamicCast( node->GetData(), wxMDIChildFrame );
 266
 267         wxASSERT_MSG( child_frame, _T("child is not a wxMDIChildFrame") );
 268
 269         if (child_frame->m_page == page)
 270             return child_frame;
 271         node = node->GetNext();
 272     }
 273
 274     return (wxMDIChildFrame*) NULL;
 275 }
 276
 277 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 278 {
 279     return m_clientWindow;
 280 }
 281
 282 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 283 {
 284     m_clientWindow = new wxMDIClientWindow( this );
 285     return m_clientWindow;
 286 }
 287
 288 void wxMDIParentFrame::ActivateNext()
 289 {
 290     if (m_clientWindow)
 291       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 292 }
 293
 294 void wxMDIParentFrame::ActivatePrevious()
 295 {
 296     if (m_clientWindow)
 297       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 298 }
 299
 300 //-----------------------------------------------------------------------------
 301 // wxMDIChildFrame
 302 //-----------------------------------------------------------------------------
 303
 304 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 305
 306 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 307     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 308     EVT_MENU_HIGHLIGHT_ALL(wxMDIChildFrame::OnMenuHighlight)
 309 END_EVENT_TABLE()
 310
 311 wxMDIChildFrame::wxMDIChildFrame()
 312 {
 313     m_menuBar = (wxMenuBar *) NULL;
 314     m_page = (GtkNotebookPage *) NULL;
 315 }
 316
 317 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 318       wxWindowID id, const wxString& title,
 319       const wxPoint& WXUNUSED(pos), const wxSize& size,
 320       long style, const wxString& name )
 321 {
 322     m_menuBar = (wxMenuBar *) NULL;
 323     m_page = (GtkNotebookPage *) NULL;
 324     Create( parent, id, title, wxDefaultPosition, size, style, name );
 325 }
 326
 327 wxMDIChildFrame::~wxMDIChildFrame()
 328 {
 329     if (m_menuBar)
 330         delete m_menuBar;
 331 }
 332
 333 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 334       wxWindowID id, const wxString& title,
 335       const wxPoint& WXUNUSED(pos), const wxSize& size,
 336       long style, const wxString& name )
 337 {
 338     m_title = title;
 339
 340     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 341 }
 342
 343 void wxMDIChildFrame::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 344 {
 345     wxWindow::DoSetSize( x, y, width, height, sizeFlags );
 346 }
 347
 348 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 349 {
 350     wxWindow::DoSetClientSize( width, height );
 351 }
 352
 353 void wxMDIChildFrame::DoGetClientSize( int *width, int *height ) const
 354 {
 355     wxWindow::DoGetClientSize( width, height );
 356 }
 357
 358 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 359 {
 360     wxWindow::AddChild(child);
 361 }
 362
 363 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 364 {
 365     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 366
 367     m_menuBar = menu_bar;
 368
 369     if (m_menuBar)
 370     {
 371         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 372
 373         m_menuBar->SetParent( mdi_frame );
 374
 375         /* insert the invisible menu bar into the _parent_ mdi frame */
 376         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 377                          m_menuBar->m_widget,
 378                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 379     }
 380 }
 381
 382 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 383 {
 384     return m_menuBar;
 385 }
 386
 387 void wxMDIChildFrame::Activate()
 388 {
 389     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 390     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 391     gint pageno = gtk_notebook_page_num( notebook, m_widget );
 392     gtk_notebook_set_current_page( notebook, pageno );
 393 }
 394
 395 void wxMDIChildFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 396 {
 397 }
 398
 399 void wxMDIChildFrame::OnMenuHighlight( wxMenuEvent& event )
 400 {
 401 #if wxUSE_STATUSBAR
 402     wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 403     if ( !ShowMenuHelp(mdi_frame->GetStatusBar(), event.GetMenuId()) )
 404     {
 405         // we don't have any help text for this item, but may be the MDI frame
 406         // does?
 407         mdi_frame->OnMenuHighlight(event);
 408     }
 409 #endif // wxUSE_STATUSBAR
 410 }
 411
 412 void wxMDIChildFrame::SetTitle( const wxString &title )
 413 {
 414     if ( title == m_title )
 415         return;
 416
 417     m_title = title;
 418
 419     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 420     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 421     gtk_notebook_set_tab_label_text(notebook, m_widget, wxGTK_CONV( title ) );
 422 }
 423
 424 //-----------------------------------------------------------------------------
 425 // "size_allocate"
 426 //-----------------------------------------------------------------------------
 427
 428 extern "C" {
 429 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 430 {
 431     if (g_isIdle) wxapp_install_idle_handler();
 432
 433     if ((win->m_x == alloc->x) &&
 434         (win->m_y == alloc->y) &&
 435         (win->m_width == alloc->width) &&
 436         (win->m_height == alloc->height) &&
 437         (win->m_sizeSet))
 438     {
 439         return;
 440     }
 441
 442     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 443 }
 444 }
 445
 446 //-----------------------------------------------------------------------------
 447 // InsertChild callback for wxMDIClientWindow
 448 //-----------------------------------------------------------------------------
 449
 450 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 451 {
 452     wxString s = child->GetTitle();
 453     if (s.IsNull()) s = _("MDI child");
 454
 455     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 456     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 457
 458     g_signal_connect (child->m_widget, "size_allocate",
 459                       G_CALLBACK (gtk_page_size_callback), child);
 460
 461     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 462
 463     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 464
 465     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 466
 467     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 468     parent_frame->m_justInserted = true;
 469 }
 470
 471 //-----------------------------------------------------------------------------
 472 // wxMDIClientWindow
 473 //-----------------------------------------------------------------------------
 474
 475 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 476
 477 wxMDIClientWindow::wxMDIClientWindow()
 478 {
 479 }
 480
 481 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 482 {
 483     CreateClient( parent, style );
 484 }
 485
 486 wxMDIClientWindow::~wxMDIClientWindow()
 487 {
 488
 489 }
 490
 491 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 492 {
 493     m_needParent = true;
 494
 495     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 496
 497     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 498         !CreateBase( parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 499     {
 500         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 501         return false;
 502     }
 503
 504     m_widget = gtk_notebook_new();
 505
 506     g_signal_connect (m_widget, "switch_page",
 507                       G_CALLBACK (gtk_mdi_page_change_callback), parent);
 508
 509     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 510
 511     m_parent->DoAddChild( this );
 512
 513     PostCreation();
 514
 515     Show( true );
 516
 517     return true;
 518 }
 519
 520 #endif