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 *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 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 104 END_EVENT_TABLE()
 105
 106 wxMDIParentFrame::wxMDIParentFrame()
 107 {
 108     m_justInserted = FALSE;
 109     m_clientWindow = (wxMDIClientWindow *) NULL;
 110 }
 111
 112 wxMDIParentFrame::wxMDIParentFrame( wxWindow *parent,
 113       wxWindowID id, const wxString& title,
 114       const wxPoint& pos, const wxSize& size,
 115       long style, const wxString& name )
 116 {
 117     m_justInserted = FALSE;
 118     m_clientWindow = (wxMDIClientWindow *) NULL;
 119     Create( parent, id, title, pos, size, style, name );
 120 }
 121
 122 wxMDIParentFrame::~wxMDIParentFrame()
 123 {
 124 }
 125
 126 bool wxMDIParentFrame::Create( wxWindow *parent,
 127       wxWindowID id, const wxString& title,
 128       const wxPoint& pos, const wxSize& size,
 129       long style, const wxString& name )
 130 {
 131     wxFrame::Create( parent, id, title, pos, size, style, name );
 132
 133     OnCreateClient();
 134
 135     return TRUE;
 136 }
 137
 138 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 139 {
 140     wxFrame::GtkOnSize( x, y, width, height );
 141
 142     wxMDIChildFrame *child_frame = GetActiveChild();
 143     if (!child_frame) return;
 144
 145     wxMenuBar *menu_bar = child_frame->m_menuBar;
 146     if (!menu_bar) return;
 147     if (!menu_bar->m_widget) return;
 148
 149     menu_bar->m_x = 0;
 150     menu_bar->m_y = 0;
 151     menu_bar->m_width = m_width;
 152     menu_bar->m_height = wxMENU_HEIGHT;
 153     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 154                           menu_bar->m_widget,
 155                           0, 0, m_width, wxMENU_HEIGHT );
 156 }
 157
 158 void wxMDIParentFrame::OnInternalIdle()
 159 {
 160     /* if a an MDI child window has just been inserted
 161        it has to be brought to the top in idle time. we
 162        simply set the last notebook page active as new
 163        pages can only be appended at the end */
 164
 165     if (m_justInserted)
 166     {
 167         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 168         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 169
 170         m_justInserted = FALSE;
 171         return;
 172     }
 173
 174     wxFrame::OnInternalIdle();
 175
 176     wxMDIChildFrame *active_child_frame = GetActiveChild();
 177     bool visible_child_menu = FALSE;
 178
 179     wxNode *node = m_clientWindow->GetChildren().First();
 180     while (node)
 181     {
 182         wxMDIChildFrame *child_frame = (wxMDIChildFrame *)node->Data();
 183         wxMenuBar *menu_bar = child_frame->m_menuBar;
 184         if (child_frame->m_menuBar)
 185         {
 186             if (child_frame == active_child_frame)
 187             {
 188                 if (menu_bar->Show(TRUE))
 189                 {
 190                     menu_bar->m_width = m_width;
 191                     menu_bar->m_height = wxMENU_HEIGHT;
 192                     gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 193                                           menu_bar->m_widget,
 194                                           0, 0, m_width, wxMENU_HEIGHT );
 195                     menu_bar->SetInvokingWindow( child_frame );
 196                 }
 197                 visible_child_menu = TRUE;
 198             }
 199             else
 200             {
 201                 if (menu_bar->Show(FALSE))
 202                 {
 203                     menu_bar->UnsetInvokingWindow( child_frame );
 204                 }
 205             }
 206         }
 207         node = node->Next();
 208     }
 209
 210     /* show/hide parent menu bar as required */
 211     if ((m_frameMenuBar) &&
 212         (m_frameMenuBar->IsShown() == visible_child_menu))
 213     {
 214         if (visible_child_menu)
 215         {
 216             m_frameMenuBar->Show( FALSE );
 217             m_frameMenuBar->UnsetInvokingWindow( this );
 218         }
 219         else
 220         {
 221             m_frameMenuBar->Show( TRUE );
 222             m_frameMenuBar->SetInvokingWindow( this );
 223
 224             m_frameMenuBar->m_width = m_width;
 225             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 226             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 227                                   m_frameMenuBar->m_widget,
 228                                   0, 0, m_width, wxMENU_HEIGHT );
 229         }
 230     }
 231 }
 232
 233 void wxMDIParentFrame::GetClientSize(int *width, int *height ) const
 234 {
 235     wxFrame::GetClientSize( width, height );
 236 }
 237
 238 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 239 {
 240     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 241
 242     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 243     if (!notebook) return (wxMDIChildFrame*) NULL;
 244
 245 #if (GTK_MINOR_VERSION > 0)
 246     gint i = gtk_notebook_get_current_page( notebook );
 247 #else
 248     gint i = gtk_notebook_current_page( notebook );
 249 #endif
 250     if (i < 0) return (wxMDIChildFrame*) NULL;
 251
 252     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 253     if (!page) return (wxMDIChildFrame*) NULL;
 254
 255     wxNode *node = m_clientWindow->GetChildren().First();
 256     while (node)
 257     {
 258         wxMDIChildFrame *child_frame = (wxMDIChildFrame *)node->Data();
 259         if (child_frame->m_page == page)
 260             return child_frame;
 261         node = node->Next();
 262     }
 263
 264     return (wxMDIChildFrame*) NULL;
 265 }
 266
 267 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 268 {
 269     return m_clientWindow;
 270 }
 271
 272 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 273 {
 274     m_clientWindow = new wxMDIClientWindow( this );
 275     return m_clientWindow;
 276 }
 277
 278 void wxMDIParentFrame::ActivateNext()
 279 {
 280     if (m_clientWindow)
 281       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 282 }
 283
 284 void wxMDIParentFrame::ActivatePrevious()
 285 {
 286     if (m_clientWindow)
 287       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 288 }
 289
 290 void wxMDIParentFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 291 {
 292 }
 293
 294 void wxMDIParentFrame::OnSysColourChanged( wxSysColourChangedEvent& WXUNUSED(event) )
 295 {
 296 }
 297
 298 //-----------------------------------------------------------------------------
 299 // wxMDIChildFrame
 300 //-----------------------------------------------------------------------------
 301
 302 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 303
 304 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 305     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 306 END_EVENT_TABLE()
 307
 308 wxMDIChildFrame::wxMDIChildFrame()
 309 {
 310     m_menuBar = (wxMenuBar *) NULL;
 311     m_page = (GtkNotebookPage *) NULL;
 312 }
 313
 314 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 315       wxWindowID id, const wxString& title,
 316       const wxPoint& WXUNUSED(pos), const wxSize& size,
 317       long style, const wxString& name )
 318 {
 319     m_menuBar = (wxMenuBar *) NULL;
 320     m_page = (GtkNotebookPage *) NULL;
 321     Create( parent, id, title, wxDefaultPosition, size, style, name );
 322 }
 323
 324 wxMDIChildFrame::~wxMDIChildFrame()
 325 {
 326     if (m_menuBar)
 327         delete m_menuBar;
 328 }
 329
 330 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 331       wxWindowID id, const wxString& title,
 332       const wxPoint& WXUNUSED(pos), const wxSize& size,
 333       long style, const wxString& name )
 334 {
 335     m_title = title;
 336
 337     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 338 }
 339
 340 void wxMDIChildFrame::GetClientSize( int *width, int *height ) const
 341 {
 342     wxWindow::GetClientSize( width, height );
 343 }
 344
 345 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 346 {
 347     wxWindow::AddChild(child);
 348 }
 349
 350 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 351 {
 352     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 353
 354     m_menuBar = menu_bar;
 355
 356     if (m_menuBar)
 357     {
 358         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 359
 360         m_menuBar->SetParent( mdi_frame );
 361
 362         /* insert the invisible menu bar into the _parent_ mdi frame */
 363         gtk_pizza_put( GTK_PIZZA(mdi_frame->m_mainWidget),
 364                          m_menuBar->m_widget,
 365                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 366     }
 367 }
 368
 369 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 370 {
 371     return m_menuBar;
 372 }
 373
 374 void wxMDIChildFrame::Activate()
 375 {
 376 #if (GTK_MINOR_VERSION > 0)
 377     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 378     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 379     gint pageno = gtk_notebook_page_num( notebook, m_page->child );
 380     gtk_notebook_set_page( notebook, pageno );
 381 #else
 382     // the only way I can see to do this under gtk+ 1.0.X would
 383     // be to keep track of page numbers, start at first and
 384     // do "next" enough times to get to this page number - messy
 385     // - J. Russell Smyth
 386 #endif
 387 }
 388
 389 void wxMDIChildFrame::OnActivate( wxActivateEvent &WXUNUSED(event) )
 390 {
 391 }
 392
 393 //-----------------------------------------------------------------------------
 394 // "size_allocate"
 395 //-----------------------------------------------------------------------------
 396
 397 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 398 {
 399     if (g_isIdle) wxapp_install_idle_handler();
 400
 401     if ((win->m_x == alloc->x) &&
 402         (win->m_y == alloc->y) &&
 403         (win->m_width == alloc->width) &&
 404         (win->m_height == alloc->height) &&
 405         (win->m_sizeSet))
 406     {
 407         return;
 408     }
 409
 410     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 411 }
 412
 413 //-----------------------------------------------------------------------------
 414 // InsertChild callback for wxMDIClientWindow
 415 //-----------------------------------------------------------------------------
 416
 417 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 418 {
 419     wxString s = child->m_title;
 420     if (s.IsNull()) s = _("MDI child");
 421
 422     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 423     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 424
 425     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 426       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 427
 428     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 429
 430     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 431
 432     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 433
 434     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 435     parent_frame->m_justInserted = TRUE;
 436 }
 437
 438 //-----------------------------------------------------------------------------
 439 // wxMDIClientWindow
 440 //-----------------------------------------------------------------------------
 441
 442 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 443
 444 wxMDIClientWindow::wxMDIClientWindow()
 445 {
 446 }
 447
 448 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 449 {
 450     CreateClient( parent, style );
 451 }
 452
 453 wxMDIClientWindow::~wxMDIClientWindow()
 454 {
 455 }
 456
 457 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 458 {
 459     m_needParent = TRUE;
 460
 461     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 462
 463     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 464         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 465     {
 466         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 467         return FALSE;
 468     }
 469
 470     m_widget = gtk_notebook_new();
 471
 472     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 473       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 474
 475     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 476
 477     m_parent->DoAddChild( this );
 478
 479     PostCreation();
 480
 481     Show( TRUE );
 482
 483     return TRUE;
 484 }
 485
 486 #endif