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 gtk_mdi_page_change_callback(GtkNotebook *WXUNUSED(widget),
  51                                               GtkNotebookPage *WXUNUSED(page),
  52                                               gint WXUNUSED(page),
  53                                               wxMDIParentFrame *parent )
  54 {
  55     if (g_isIdle)
  56         wxapp_install_idle_handler();
  57
  58     wxMDIChildFrame *child = parent->GetActiveChild();
  59
  60     if (!child) return;
  61
  62     wxActivateEvent event( wxEVT_ACTIVATE, TRUE, child->GetId() );
  63     event.SetEventObject( child);
  64     child->GetEventHandler()->ProcessEvent( event );
  65 }
  66
  67 //-----------------------------------------------------------------------------
  68 // wxMDIParentFrame
  69 //-----------------------------------------------------------------------------
  70
  71 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
  72
  73 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
  74 END_EVENT_TABLE()
  75
  76 wxMDIParentFrame::wxMDIParentFrame()
  77 {
  78     m_justInserted = FALSE;
  79     m_clientWindow = (wxMDIClientWindow *) NULL;
  80 }
  81
  82 wxMDIParentFrame::wxMDIParentFrame( wxWindow *parent,
  83       wxWindowID id, const wxString& title,
  84       const wxPoint& pos, const wxSize& size,
  85       long style, const wxString& name )
  86 {
  87     m_justInserted = FALSE;
  88     m_clientWindow = (wxMDIClientWindow *) NULL;
  89     Create( parent, id, title, pos, size, style, name );
  90 }
  91
  92 wxMDIParentFrame::~wxMDIParentFrame()
  93 {
  94 }
  95
  96 bool wxMDIParentFrame::Create( wxWindow *parent,
  97       wxWindowID id, const wxString& title,
  98       const wxPoint& pos, const wxSize& size,
  99       long style, const wxString& name )
 100 {
 101     wxFrame::Create( parent, id, title, pos, size, style, name );
 102
 103     OnCreateClient();
 104
 105     return TRUE;
 106 }
 107
 108 void wxMDIParentFrame::GtkOnSize( int x, int y, int width, int height )
 109 {
 110     wxFrame::GtkOnSize( x, y, width, height );
 111
 112     wxMDIChildFrame *child_frame = GetActiveChild();
 113     if (!child_frame) return;
 114
 115     wxMenuBar *menu_bar = child_frame->m_menuBar;
 116     if (!menu_bar) return;
 117     if (!menu_bar->m_widget) return;
 118
 119     menu_bar->m_x = 0;
 120     menu_bar->m_y = 0;
 121     menu_bar->m_width = m_width;
 122     menu_bar->m_height = wxMENU_HEIGHT;
 123     gtk_myfixed_set_size( GTK_MYFIXED(m_mainWidget),
 124                           menu_bar->m_widget,
 125                           0, 0, m_width, wxMENU_HEIGHT );
 126 }
 127
 128 void wxMDIParentFrame::OnInternalIdle()
 129 {
 130     /* if a an MDI child window has just been inserted
 131        it has to be brought to the top in idle time. we
 132        simply set the last notebook page active as new
 133        pages can only be appended at the end */
 134
 135     if (m_justInserted)
 136     {
 137         GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 138         gtk_notebook_set_page( notebook, g_list_length( notebook->children ) - 1 );
 139
 140         m_justInserted = FALSE;
 141         return;
 142     }
 143
 144     wxFrame::OnInternalIdle();
 145
 146     wxMDIChildFrame *active_child_frame = GetActiveChild();
 147     bool visible_child_menu = FALSE;
 148
 149     wxNode *node = m_clientWindow->GetChildren().First();
 150     while (node)
 151     {
 152         wxMDIChildFrame *child_frame = (wxMDIChildFrame *)node->Data();
 153         wxMenuBar *menu_bar = child_frame->m_menuBar;
 154         if (child_frame->m_menuBar)
 155         {
 156             if (child_frame == active_child_frame)
 157             {
 158                 if (menu_bar->Show(TRUE))
 159                 {
 160                     menu_bar->m_width = m_width;
 161                     menu_bar->m_height = wxMENU_HEIGHT;
 162                     gtk_myfixed_set_size( GTK_MYFIXED(m_mainWidget),
 163                                           menu_bar->m_widget,
 164                                           0, 0, m_width, wxMENU_HEIGHT );
 165                     menu_bar->SetInvokingWindow( child_frame );
 166                 }
 167                 visible_child_menu = TRUE;
 168             }
 169             else
 170             {
 171                 if (menu_bar->Show(FALSE))
 172                 {
 173                     menu_bar->UnsetInvokingWindow( child_frame );
 174                 }
 175             }
 176         }
 177         node = node->Next();
 178     }
 179
 180     /* show/hide parent menu bar as required */
 181     if ((m_frameMenuBar) &&
 182         (m_frameMenuBar->IsShown() == visible_child_menu))
 183     {
 184         if (visible_child_menu)
 185         {
 186             m_frameMenuBar->Show( FALSE );
 187             m_frameMenuBar->UnsetInvokingWindow( this );
 188         }
 189         else
 190         {
 191             m_frameMenuBar->Show( TRUE );
 192             m_frameMenuBar->SetInvokingWindow( this );
 193
 194             m_frameMenuBar->m_width = m_width;
 195             m_frameMenuBar->m_height = wxMENU_HEIGHT;
 196             gtk_myfixed_set_size( GTK_MYFIXED(m_mainWidget),
 197                                   m_frameMenuBar->m_widget,
 198                                   0, 0, m_width, wxMENU_HEIGHT );
 199         }
 200     }
 201 }
 202
 203 void wxMDIParentFrame::GetClientSize(int *width, int *height ) const
 204 {
 205     wxFrame::GetClientSize( width, height );
 206 }
 207
 208 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 209 {
 210     if (!m_clientWindow) return (wxMDIChildFrame*) NULL;
 211
 212     GtkNotebook *notebook = GTK_NOTEBOOK(m_clientWindow->m_widget);
 213     if (!notebook) return (wxMDIChildFrame*) NULL;
 214
 215 #if (GTK_MINOR_VERSION > 0)
 216     gint i = gtk_notebook_get_current_page( notebook );
 217 #else
 218     gint i = gtk_notebook_current_page( notebook );
 219 #endif
 220     if (i < 0) return (wxMDIChildFrame*) NULL;
 221
 222     GtkNotebookPage* page = (GtkNotebookPage*) (g_list_nth(notebook->children,i)->data);
 223     if (!page) return (wxMDIChildFrame*) NULL;
 224
 225     wxNode *node = m_clientWindow->GetChildren().First();
 226     while (node)
 227     {
 228         wxMDIChildFrame *child_frame = (wxMDIChildFrame *)node->Data();
 229         if (child_frame->m_page == page)
 230             return child_frame;
 231         node = node->Next();
 232     }
 233
 234     return (wxMDIChildFrame*) NULL;
 235 }
 236
 237 wxMDIClientWindow *wxMDIParentFrame::GetClientWindow() const
 238 {
 239     return m_clientWindow;
 240 }
 241
 242 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 243 {
 244     m_clientWindow = new wxMDIClientWindow( this );
 245     return m_clientWindow;
 246 }
 247
 248 void wxMDIParentFrame::ActivateNext()
 249 {
 250     if (m_clientWindow)
 251       gtk_notebook_next_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 252 }
 253
 254 void wxMDIParentFrame::ActivatePrevious()
 255 {
 256     if (m_clientWindow)
 257       gtk_notebook_prev_page( GTK_NOTEBOOK(m_clientWindow->m_widget) );
 258 }
 259
 260 void wxMDIParentFrame::OnActivate( wxActivateEvent& WXUNUSED(event) )
 261 {
 262 }
 263
 264 void wxMDIParentFrame::OnSysColourChanged( wxSysColourChangedEvent& WXUNUSED(event) )
 265 {
 266 }
 267
 268 //-----------------------------------------------------------------------------
 269 // wxMDIChildFrame
 270 //-----------------------------------------------------------------------------
 271
 272 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 273
 274 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 275     EVT_ACTIVATE(wxMDIChildFrame::OnActivate)
 276 END_EVENT_TABLE()
 277
 278 wxMDIChildFrame::wxMDIChildFrame()
 279 {
 280     m_menuBar = (wxMenuBar *) NULL;
 281     m_page = (GtkNotebookPage *) NULL;
 282 }
 283
 284 wxMDIChildFrame::wxMDIChildFrame( wxMDIParentFrame *parent,
 285       wxWindowID id, const wxString& title,
 286       const wxPoint& WXUNUSED(pos), const wxSize& size,
 287       long style, const wxString& name )
 288 {
 289     m_menuBar = (wxMenuBar *) NULL;
 290     m_page = (GtkNotebookPage *) NULL;
 291     Create( parent, id, title, wxDefaultPosition, size, style, name );
 292 }
 293
 294 wxMDIChildFrame::~wxMDIChildFrame()
 295 {
 296     if (m_menuBar)
 297         delete m_menuBar;
 298 }
 299
 300 bool wxMDIChildFrame::Create( wxMDIParentFrame *parent,
 301       wxWindowID id, const wxString& title,
 302       const wxPoint& WXUNUSED(pos), const wxSize& size,
 303       long style, const wxString& name )
 304 {
 305     m_title = title;
 306
 307     return wxWindow::Create( parent->GetClientWindow(), id, wxDefaultPosition, size, style, name );
 308 }
 309
 310 void wxMDIChildFrame::GetClientSize( int *width, int *height ) const
 311 {
 312     wxWindow::GetClientSize( width, height );
 313 }
 314
 315 void wxMDIChildFrame::AddChild( wxWindowBase *child )
 316 {
 317     wxWindow::AddChild(child);
 318 }
 319
 320 void wxMDIChildFrame::SetMenuBar( wxMenuBar *menu_bar )
 321 {
 322     wxASSERT_MSG( m_menuBar == NULL, wxT("Only one menubar allowed") );
 323
 324     m_menuBar = menu_bar;
 325
 326     if (m_menuBar)
 327     {
 328         wxMDIParentFrame *mdi_frame = (wxMDIParentFrame*)m_parent->GetParent();
 329
 330         m_menuBar->SetParent( mdi_frame );
 331
 332         /* insert the invisible menu bar into the _parent_ mdi frame */
 333         gtk_myfixed_put( GTK_MYFIXED(mdi_frame->m_mainWidget),
 334                          m_menuBar->m_widget,
 335                          0, 0,  mdi_frame->m_width, wxMENU_HEIGHT );
 336     }
 337 }
 338
 339 wxMenuBar *wxMDIChildFrame::GetMenuBar() const
 340 {
 341     return m_menuBar;
 342 }
 343
 344 void wxMDIChildFrame::Activate()
 345 {
 346 #if (GTK_MINOR_VERSION > 0)
 347     wxMDIParentFrame* parent = (wxMDIParentFrame*) GetParent();
 348     GtkNotebook* notebook = GTK_NOTEBOOK(parent->m_widget);
 349     gint pageno = gtk_notebook_page_num( notebook, m_page->child );
 350     gtk_notebook_set_page( notebook, pageno );
 351 #else
 352     // the only way I can see to do this under gtk+ 1.0.X would
 353     // be to keep track of page numbers, start at first and
 354     // do "next" enough times to get to this page number - messy
 355     // - J. Russell Smyth
 356 #endif
 357 }
 358
 359 void wxMDIChildFrame::OnActivate( wxActivateEvent &WXUNUSED(event) )
 360 {
 361 }
 362
 363 //-----------------------------------------------------------------------------
 364 // "size_allocate"
 365 //-----------------------------------------------------------------------------
 366
 367 static void gtk_page_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxWindow *win )
 368 {
 369     if (g_isIdle) wxapp_install_idle_handler();
 370
 371     if ((win->m_x == alloc->x) &&
 372         (win->m_y == alloc->y) &&
 373         (win->m_width == alloc->width) &&
 374         (win->m_height == alloc->height) &&
 375         (win->m_sizeSet))
 376     {
 377         return;
 378     }
 379
 380     win->SetSize( alloc->x, alloc->y, alloc->width, alloc->height );
 381 }
 382
 383 //-----------------------------------------------------------------------------
 384 // InsertChild callback for wxMDIClientWindow
 385 //-----------------------------------------------------------------------------
 386
 387 static void wxInsertChildInMDI( wxMDIClientWindow* parent, wxMDIChildFrame* child )
 388 {
 389     wxString s = child->m_title;
 390     if (s.IsNull()) s = _("MDI child");
 391
 392     GtkWidget *label_widget = gtk_label_new( s.mbc_str() );
 393     gtk_misc_set_alignment( GTK_MISC(label_widget), 0.0, 0.5 );
 394
 395     gtk_signal_connect( GTK_OBJECT(child->m_widget), "size_allocate",
 396       GTK_SIGNAL_FUNC(gtk_page_size_callback), (gpointer)child );
 397
 398     GtkNotebook *notebook = GTK_NOTEBOOK(parent->m_widget);
 399
 400     gtk_notebook_append_page( notebook, child->m_widget, label_widget );
 401
 402     child->m_page = (GtkNotebookPage*) (g_list_last(notebook->children)->data);
 403
 404     wxMDIParentFrame *parent_frame = (wxMDIParentFrame*) parent->GetParent();
 405     parent_frame->m_justInserted = TRUE;
 406 }
 407
 408 //-----------------------------------------------------------------------------
 409 // wxMDIClientWindow
 410 //-----------------------------------------------------------------------------
 411
 412 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 413
 414 wxMDIClientWindow::wxMDIClientWindow()
 415 {
 416 }
 417
 418 wxMDIClientWindow::wxMDIClientWindow( wxMDIParentFrame *parent, long style )
 419 {
 420     CreateClient( parent, style );
 421 }
 422
 423 wxMDIClientWindow::~wxMDIClientWindow()
 424 {
 425 }
 426
 427 bool wxMDIClientWindow::CreateClient( wxMDIParentFrame *parent, long style )
 428 {
 429     m_needParent = TRUE;
 430
 431     m_insertCallback = (wxInsertChildFunction)wxInsertChildInMDI;
 432
 433     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 434         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
 435     {
 436         wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
 437         return FALSE;
 438     }
 439
 440     m_widget = gtk_notebook_new();
 441
 442     gtk_signal_connect( GTK_OBJECT(m_widget), "switch_page",
 443       GTK_SIGNAL_FUNC(gtk_mdi_page_change_callback), (gpointer)parent );
 444
 445     gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
 446
 447     m_parent->DoAddChild( this );
 448
 449     PostCreation();
 450
 451     Show( TRUE );
 452
 453     return TRUE;
 454 }
 455
 456 #endif