src/gtk/frame.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/frame.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 #include "wx/frame.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/menu.h"
  17     #include "wx/toolbar.h"
  18     #include "wx/statusbr.h"
  19 #endif // WX_PRECOMP
  20
  21 #include <gtk/gtk.h>
  22 #include "wx/gtk/win_gtk.h"
  23
  24 // ----------------------------------------------------------------------------
  25 // constants
  26 // ----------------------------------------------------------------------------
  27
  28 static const int wxSTATUS_HEIGHT  = 25;
  29 static const int wxPLACE_HOLDER   = 0;
  30
  31 // ----------------------------------------------------------------------------
  32 // event tables
  33 // ----------------------------------------------------------------------------
  34
  35 IMPLEMENT_DYNAMIC_CLASS(wxFrame, wxTopLevelWindow)
  36
  37 // ============================================================================
  38 // implementation
  39 // ============================================================================
  40
  41 // ----------------------------------------------------------------------------
  42 // GTK callbacks
  43 // ----------------------------------------------------------------------------
  44
  45 #if wxUSE_MENUS_NATIVE
  46
  47 //-----------------------------------------------------------------------------
  48 // "child_attached" of menu bar
  49 //-----------------------------------------------------------------------------
  50
  51 extern "C" {
  52 static void gtk_menu_attached_callback( GtkWidget *WXUNUSED(widget), GtkWidget *WXUNUSED(child), wxFrame *win )
  53 {
  54     if (!win->m_hasVMT) return;
  55
  56     win->m_menuBarDetached = false;
  57     win->GtkUpdateSize();
  58 }
  59 }
  60
  61 //-----------------------------------------------------------------------------
  62 // "child_detached" of menu bar
  63 //-----------------------------------------------------------------------------
  64
  65 extern "C" {
  66 static void gtk_menu_detached_callback( GtkWidget *WXUNUSED(widget), GtkWidget *WXUNUSED(child), wxFrame *win )
  67 {
  68     if (!win->m_hasVMT) return;
  69
  70     // Raise the client area area
  71     gdk_window_raise( win->m_wxwindow->window );
  72
  73     win->m_menuBarDetached = true;
  74     win->GtkUpdateSize();
  75 }
  76 }
  77
  78 #endif // wxUSE_MENUS_NATIVE
  79
  80 #if wxUSE_TOOLBAR
  81 //-----------------------------------------------------------------------------
  82 // "child_attached" of tool bar
  83 //-----------------------------------------------------------------------------
  84
  85 extern "C" {
  86 static void gtk_toolbar_attached_callback( GtkWidget *WXUNUSED(widget), GtkWidget *WXUNUSED(child), wxFrame *win )
  87 {
  88     if (!win->m_hasVMT) return;
  89
  90     win->m_toolBarDetached = false;
  91     win->GtkUpdateSize();
  92 }
  93 }
  94
  95 //-----------------------------------------------------------------------------
  96 // "child_detached" of tool bar
  97 //-----------------------------------------------------------------------------
  98
  99 extern "C" {
 100 static void gtk_toolbar_detached_callback( GtkWidget *WXUNUSED(widget), GtkWidget *WXUNUSED(child), wxFrame *win )
 101 {
 102     if (!win->m_hasVMT) return;
 103
 104     // Raise the client area area
 105     gdk_window_raise( win->m_wxwindow->window );
 106
 107     win->m_toolBarDetached = true;
 108     win->GtkUpdateSize();
 109 }
 110 }
 111 #endif // wxUSE_TOOLBAR
 112
 113
 114 // ----------------------------------------------------------------------------
 115 // wxFrame itself
 116 // ----------------------------------------------------------------------------
 117
 118 //-----------------------------------------------------------------------------
 119 // InsertChild for wxFrame
 120 //-----------------------------------------------------------------------------
 121
 122 #if wxUSE_TOOLBAR
 123
 124 /* Callback for wxFrame. This very strange beast has to be used because
 125  * C++ has no virtual methods in a constructor. We have to emulate a
 126  * virtual function here as wxWidgets requires different ways to insert
 127  * a child in container classes. */
 128
 129 static void wxInsertChildInFrame(wxWindow* parent, wxWindow* child)
 130 {
 131     wxASSERT( GTK_IS_WIDGET(child->m_widget) );
 132
 133     // These are outside the client area
 134     wxFrame* frame = wx_static_cast(wxFrame*, parent);
 135     gtk_pizza_put( GTK_PIZZA(frame->m_mainWidget),
 136                      child->m_widget,
 137                      child->m_x,
 138                      child->m_y,
 139                      child->m_width,
 140                      child->m_height );
 141
 142 #if wxUSE_TOOLBAR_NATIVE
 143     // We connect to these events for recalculating the client area
 144     // space when the toolbar is floating
 145     if (wxIS_KIND_OF(child,wxToolBar))
 146     {
 147         if (child->HasFlag(wxTB_DOCKABLE))
 148         {
 149             g_signal_connect (child->m_widget, "child_attached",
 150                               G_CALLBACK (gtk_toolbar_attached_callback),
 151                               parent);
 152             g_signal_connect (child->m_widget, "child_detached",
 153                               G_CALLBACK (gtk_toolbar_detached_callback),
 154                               parent);
 155         }
 156     }
 157 #endif // wxUSE_TOOLBAR_NATIVE
 158 }
 159
 160 #endif // wxUSE_TOOLBAR
 161
 162 // ----------------------------------------------------------------------------
 163 // wxFrame creation
 164 // ----------------------------------------------------------------------------
 165
 166 void wxFrame::Init()
 167 {
 168     m_menuBarDetached = false;
 169     m_toolBarDetached = false;
 170     m_menuBarHeight = 2;
 171     m_fsSaveFlag = 0;
 172 }
 173
 174 bool wxFrame::Create( wxWindow *parent,
 175                       wxWindowID id,
 176                       const wxString& title,
 177                       const wxPoint& pos,
 178                       const wxSize& sizeOrig,
 179                       long style,
 180                       const wxString &name )
 181 {
 182     return wxFrameBase::Create(parent, id, title, pos, sizeOrig, style, name);
 183 }
 184
 185 wxFrame::~wxFrame()
 186 {
 187     m_isBeingDeleted = true;
 188     DeleteAllBars();
 189 }
 190
 191 // ----------------------------------------------------------------------------
 192 // overridden wxWindow methods
 193 // ----------------------------------------------------------------------------
 194
 195 void wxFrame::DoGetClientSize( int *width, int *height ) const
 196 {
 197     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 198
 199     wxFrameBase::DoGetClientSize(width, height);
 200
 201     if (height)
 202     {
 203 #if wxUSE_MENUS_NATIVE
 204         // menu bar
 205         if (HasVisibleMenubar() && !m_menuBarDetached)
 206         {
 207             *height -= m_menuBarHeight;
 208         }
 209 #endif // wxUSE_MENUS_NATIVE
 210
 211 #if wxUSE_STATUSBAR
 212         // status bar
 213         if (m_frameStatusBar && GTK_WIDGET_VISIBLE(m_frameStatusBar->m_widget))
 214             *height -= wxSTATUS_HEIGHT;
 215 #endif // wxUSE_STATUSBAR
 216     }
 217
 218 #if wxUSE_TOOLBAR
 219     // tool bar
 220     if (m_frameToolBar &&
 221         GTK_WIDGET_VISIBLE(m_frameToolBar->m_widget) && !m_toolBarDetached)
 222     {
 223         if (m_frameToolBar->IsVertical())
 224         {
 225             if (width)
 226                 *width -= m_frameToolBar->GetSize().x;
 227         }
 228         else
 229         {
 230             if (height)
 231                 *height -= m_frameToolBar->GetSize().y;
 232         }
 233     }
 234 #endif // wxUSE_TOOLBAR
 235
 236     if (width != NULL && *width < 0)
 237         *width = 0;
 238     if (height != NULL && *height < 0)
 239         *height = 0;
 240 }
 241
 242 bool wxFrame::ShowFullScreen(bool show, long style)
 243 {
 244     if (!wxFrameBase::ShowFullScreen(show, style))
 245         return false;
 246
 247     wxWindow* const bar[] = {
 248 #if wxUSE_MENUS
 249         m_frameMenuBar,
 250 #else
 251         NULL,
 252 #endif
 253 #if wxUSE_TOOLBAR
 254         m_frameToolBar,
 255 #else
 256         NULL,
 257 #endif
 258 #if wxUSE_STATUSBAR
 259         m_frameStatusBar,
 260 #else
 261         NULL,
 262 #endif
 263     };
 264     const long fsNoBar[] = {
 265         wxFULLSCREEN_NOMENUBAR, wxFULLSCREEN_NOTOOLBAR, wxFULLSCREEN_NOSTATUSBAR
 266     };
 267     for (int i = 0; i < 3; i++)
 268     {
 269         if (show)
 270         {
 271             if (bar[i] && (style & fsNoBar[i]))
 272             {
 273                 if (bar[i]->IsShown())
 274                     bar[i]->Show(false);
 275                 else
 276                     style &= ~fsNoBar[i];
 277             }
 278         }
 279         else
 280         {
 281             if (bar[i] && (m_fsSaveFlag & fsNoBar[i]))
 282                 bar[i]->Show(true);
 283         }
 284     }
 285     if (show)
 286         m_fsSaveFlag = style;
 287
 288     return true;
 289 }
 290
 291 void wxFrame::GtkOnSize()
 292 {
 293     // avoid recursions
 294     if (m_resizing) return;
 295     m_resizing = true;
 296
 297     // this shouldn't happen: wxFrame, wxMDIParentFrame and wxMDIChildFrame have m_wxwindow
 298     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid frame") );
 299
 300     // space occupied by m_frameToolBar and m_frameMenuBar
 301     int client_area_x_offset = 0,
 302         client_area_y_offset = 0;
 303
 304     /* wxMDIChildFrame derives from wxFrame but it _is_ a wxWindow as it uses
 305        wxWindow::Create to create it's GTK equivalent. m_mainWidget is only
 306        set in wxFrame::Create so it is used to check what kind of frame we
 307        have here. if m_mainWidget is NULL it is a wxMDIChildFrame and so we
 308        skip the part which handles m_frameMenuBar, m_frameToolBar and (most
 309        importantly) m_mainWidget */
 310
 311     ConstrainSize();
 312
 313     if (m_mainWidget)
 314     {
 315         // TODO
 316         // Rewrite this terrible code to using GtkVBox
 317
 318         // m_mainWidget holds the menubar, the toolbar and the client
 319         // area, which is represented by m_wxwindow.
 320
 321 #if wxUSE_MENUS_NATIVE
 322         int menubarHeight = 0;
 323 #endif
 324
 325 #if wxUSE_MENUS_NATIVE
 326         if (HasVisibleMenubar())
 327         {
 328             int xx = m_miniEdge;
 329             int yy = m_miniEdge + m_miniTitle;
 330             int ww = m_width  - 2*m_miniEdge;
 331             if (ww < 0)
 332                 ww = 0;
 333             menubarHeight = m_menuBarHeight;
 334             if (m_menuBarDetached) menubarHeight = wxPLACE_HOLDER;
 335             m_frameMenuBar->m_x = xx;
 336             m_frameMenuBar->m_y = yy;
 337             m_frameMenuBar->m_width = ww;
 338             m_frameMenuBar->m_height = menubarHeight;
 339             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 340                                   m_frameMenuBar->m_widget,
 341                                   xx, yy, ww, menubarHeight);
 342             client_area_y_offset += menubarHeight;
 343         }
 344 #endif // wxUSE_MENUS_NATIVE
 345
 346 #if wxUSE_TOOLBAR
 347         if ((m_frameToolBar) && m_frameToolBar->IsShown() &&
 348             (m_frameToolBar->m_widget->parent == m_mainWidget))
 349         {
 350             int xx = m_miniEdge;
 351             int yy = m_miniEdge + m_miniTitle
 352 #if wxUSE_MENUS_NATIVE
 353                         + menubarHeight
 354 #endif
 355                         ;
 356
 357             m_frameToolBar->m_x = xx;
 358             m_frameToolBar->m_y = yy;
 359
 360             // don't change the toolbar's reported height/width
 361             int ww, hh;
 362             if ( m_frameToolBar->GetWindowStyle() & wxTB_VERTICAL )
 363             {
 364                 ww = m_toolBarDetached ? wxPLACE_HOLDER
 365                                        : m_frameToolBar->m_width;
 366                 hh = m_height - 2*m_miniEdge;
 367
 368                 client_area_x_offset += ww;
 369             }
 370             else if( m_frameToolBar->HasFlag(wxTB_RIGHT) )
 371             {
 372                yy += 2;
 373                ww = m_toolBarDetached ? wxPLACE_HOLDER
 374                                       : m_frameToolBar->m_width;
 375                xx = GetClientSize().x - 1;
 376                hh = m_height - 2*m_miniEdge;
 377                if( hh < 0 )
 378                   hh = 0;
 379
 380             }
 381             else if( m_frameToolBar->GetWindowStyle() & wxTB_BOTTOM )
 382             {
 383                 xx = m_miniEdge;
 384                 yy = GetClientSize().y;
 385 #if wxUSE_MENUS_NATIVE
 386                 yy += m_menuBarHeight;
 387 #endif // wxUSE_MENU_NATIVE
 388                 m_frameToolBar->m_x = xx;
 389                 m_frameToolBar->m_y = yy;
 390                 ww = m_width - 2*m_miniEdge;
 391                 hh = m_toolBarDetached ? wxPLACE_HOLDER
 392                                        : m_frameToolBar->m_height;
 393             }
 394             else
 395             {
 396                 ww = m_width - 2*m_miniEdge;
 397                 hh = m_toolBarDetached ? wxPLACE_HOLDER
 398                                        : m_frameToolBar->m_height;
 399
 400                 client_area_y_offset += hh;
 401             }
 402
 403             if (ww < 0)
 404                 ww = 0;
 405             if (hh < 0)
 406                 hh = 0;
 407             gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 408                                   m_frameToolBar->m_widget,
 409                                   xx, yy, ww, hh );
 410         }
 411 #endif // wxUSE_TOOLBAR
 412
 413         int client_x = client_area_x_offset + m_miniEdge;
 414         int client_y = client_area_y_offset + m_miniEdge + m_miniTitle;
 415         int client_w = m_width - client_area_x_offset - 2*m_miniEdge;
 416         int client_h = m_height - client_area_y_offset- 2*m_miniEdge - m_miniTitle;
 417         if (client_w < 0)
 418             client_w = 0;
 419         if (client_h < 0)
 420             client_h = 0;
 421         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
 422                               m_wxwindow,
 423                               client_x, client_y, client_w, client_h );
 424     }
 425     else
 426     {
 427         // If there is no m_mainWidget between m_widget and m_wxwindow there
 428         // is no need to set the size or position of m_wxwindow.
 429     }
 430
 431 #if wxUSE_STATUSBAR
 432     if (m_frameStatusBar && m_frameStatusBar->IsShown())
 433     {
 434         int xx = 0 + m_miniEdge;
 435         int yy = m_height - wxSTATUS_HEIGHT - m_miniEdge - client_area_y_offset;
 436         int ww = m_width - 2*m_miniEdge;
 437         if (ww < 0)
 438             ww = 0;
 439         int hh = wxSTATUS_HEIGHT;
 440         m_frameStatusBar->m_x = xx;
 441         m_frameStatusBar->m_y = yy;
 442         m_frameStatusBar->m_width = ww;
 443         m_frameStatusBar->m_height = hh;
 444         gtk_pizza_set_size( GTK_PIZZA(m_wxwindow),
 445                             m_frameStatusBar->m_widget,
 446                             xx, yy, ww, hh );
 447     }
 448 #endif // wxUSE_STATUSBAR
 449
 450     m_sizeSet = true;
 451
 452     // send size event to frame
 453     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 454     event.SetEventObject( this );
 455     GetEventHandler()->ProcessEvent( event );
 456
 457 #if wxUSE_STATUSBAR
 458     // send size event to status bar
 459     if (m_frameStatusBar)
 460     {
 461         wxSizeEvent event2( wxSize(m_frameStatusBar->m_width,m_frameStatusBar->m_height), m_frameStatusBar->GetId() );
 462         event2.SetEventObject( m_frameStatusBar );
 463         m_frameStatusBar->GetEventHandler()->ProcessEvent( event2 );
 464     }
 465 #endif // wxUSE_STATUSBAR
 466
 467     m_resizing = false;
 468 }
 469
 470 void wxFrame::OnInternalIdle()
 471 {
 472     wxFrameBase::OnInternalIdle();
 473
 474 #if wxUSE_MENUS_NATIVE
 475     if (m_frameMenuBar) m_frameMenuBar->OnInternalIdle();
 476 #endif // wxUSE_MENUS_NATIVE
 477 #if wxUSE_TOOLBAR
 478     if (m_frameToolBar) m_frameToolBar->OnInternalIdle();
 479 #endif
 480 #if wxUSE_STATUSBAR
 481     if (m_frameStatusBar)
 482     {
 483         m_frameStatusBar->OnInternalIdle();
 484
 485         // There may be controls in the status bar that
 486         // need to be updated
 487         for ( wxWindowList::compatibility_iterator node = m_frameStatusBar->GetChildren().GetFirst();
 488           node;
 489           node = node->GetNext() )
 490         {
 491             wxWindow *child = node->GetData();
 492             child->OnInternalIdle();
 493         }
 494     }
 495 #endif
 496 }
 497
 498 // ----------------------------------------------------------------------------
 499 // menu/tool/status bar stuff
 500 // ----------------------------------------------------------------------------
 501
 502 #if wxUSE_MENUS_NATIVE
 503
 504 void wxFrame::DetachMenuBar()
 505 {
 506     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 507     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid frame") );
 508
 509     if ( m_frameMenuBar )
 510     {
 511         m_frameMenuBar->UnsetInvokingWindow( this );
 512
 513         if (m_frameMenuBar->GetWindowStyle() & wxMB_DOCKABLE)
 514         {
 515             g_signal_handlers_disconnect_by_func (m_frameMenuBar->m_widget,
 516                     (gpointer) gtk_menu_attached_callback,
 517                     this);
 518
 519             g_signal_handlers_disconnect_by_func (m_frameMenuBar->m_widget,
 520                     (gpointer) gtk_menu_detached_callback,
 521                     this);
 522         }
 523
 524         gtk_widget_ref( m_frameMenuBar->m_widget );
 525
 526         gtk_container_remove( GTK_CONTAINER(m_mainWidget), m_frameMenuBar->m_widget );
 527     }
 528
 529     wxFrameBase::DetachMenuBar();
 530 }
 531
 532 void wxFrame::AttachMenuBar( wxMenuBar *menuBar )
 533 {
 534     wxFrameBase::AttachMenuBar(menuBar);
 535
 536     if (m_frameMenuBar)
 537     {
 538         m_frameMenuBar->SetInvokingWindow( this );
 539
 540         m_frameMenuBar->SetParent(this);
 541         gtk_pizza_put( GTK_PIZZA(m_mainWidget),
 542                 m_frameMenuBar->m_widget,
 543                 m_frameMenuBar->m_x,
 544                 m_frameMenuBar->m_y,
 545                 m_frameMenuBar->m_width,
 546                 m_frameMenuBar->m_height );
 547
 548         if (menuBar->GetWindowStyle() & wxMB_DOCKABLE)
 549         {
 550             g_signal_connect (menuBar->m_widget, "child_attached",
 551                               G_CALLBACK (gtk_menu_attached_callback),
 552                               this);
 553             g_signal_connect (menuBar->m_widget, "child_detached",
 554                               G_CALLBACK (gtk_menu_detached_callback),
 555                               this);
 556         }
 557
 558         gtk_widget_show( m_frameMenuBar->m_widget );
 559
 560         UpdateMenuBarSize();
 561     }
 562     else
 563     {
 564         m_menuBarHeight = 2;
 565         GtkUpdateSize();        // resize window in OnInternalIdle
 566     }
 567 }
 568
 569 void wxFrame::UpdateMenuBarSize()
 570 {
 571     m_menuBarHeight = 2;
 572
 573     // this is called after Remove with a NULL m_frameMenuBar
 574     if ( m_frameMenuBar )
 575     {
 576         GtkRequisition req;
 577         gtk_widget_ensure_style(m_frameMenuBar->m_widget);
 578         // have to call class method directly because
 579         // "size_request" signal is overridden by wx
 580         GTK_WIDGET_GET_CLASS(m_frameMenuBar->m_widget)->size_request(
 581             m_frameMenuBar->m_widget, &req);
 582
 583         m_menuBarHeight = req.height;
 584     }
 585
 586     // resize window in OnInternalIdle
 587     GtkUpdateSize();
 588 }
 589
 590 bool wxFrame::HasVisibleMenubar() const
 591 {
 592     return m_frameMenuBar && m_frameMenuBar->IsShown();
 593 }
 594 #endif // wxUSE_MENUS_NATIVE
 595
 596 #if wxUSE_TOOLBAR
 597
 598 wxToolBar* wxFrame::CreateToolBar( long style, wxWindowID id, const wxString& name )
 599 {
 600     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 601
 602     InsertChildFunction save = m_insertCallback;
 603     m_insertCallback = wxInsertChildInFrame;
 604     m_frameToolBar = wxFrameBase::CreateToolBar( style, id, name );
 605     m_insertCallback = save;
 606
 607     GtkUpdateSize();
 608
 609     return m_frameToolBar;
 610 }
 611
 612 void wxFrame::SetToolBar(wxToolBar *toolbar)
 613 {
 614     bool hadTbar = m_frameToolBar != NULL;
 615
 616     wxFrameBase::SetToolBar(toolbar);
 617
 618     if ( m_frameToolBar )
 619     {
 620         // insert into toolbar area if not already there
 621         if ((m_frameToolBar->m_widget->parent) &&
 622             (m_frameToolBar->m_widget->parent != m_mainWidget))
 623         {
 624             GetChildren().DeleteObject( m_frameToolBar );
 625
 626             gtk_widget_reparent( m_frameToolBar->m_widget, m_mainWidget );
 627             GtkUpdateSize();
 628         }
 629     }
 630     else // toolbar unset
 631     {
 632         // still need to update size if it had been there before
 633         if ( hadTbar )
 634         {
 635             GtkUpdateSize();
 636         }
 637     }
 638 }
 639
 640 #endif // wxUSE_TOOLBAR
 641
 642 #if wxUSE_STATUSBAR
 643
 644 wxStatusBar* wxFrame::CreateStatusBar(int number,
 645                                       long style,
 646                                       wxWindowID id,
 647                                       const wxString& name)
 648 {
 649     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 650
 651     // because it will change when toolbar is added
 652     GtkUpdateSize();
 653
 654     return wxFrameBase::CreateStatusBar( number, style, id, name );
 655 }
 656
 657 void wxFrame::SetStatusBar(wxStatusBar *statbar)
 658 {
 659     bool hadStatBar = m_frameStatusBar != NULL;
 660
 661     wxFrameBase::SetStatusBar(statbar);
 662
 663     if (hadStatBar && !m_frameStatusBar)
 664         GtkUpdateSize();
 665 }
 666
 667 void wxFrame::PositionStatusBar()
 668 {
 669     if ( !m_frameStatusBar )
 670         return;
 671
 672     GtkUpdateSize();
 673 }
 674 #endif // wxUSE_STATUSBAR