src/common/framecmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/framecmn.cpp
   3 // Purpose:     common (for all platforms) wxFrame functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Created:     01/02/97
   6 // Id:          $Id$
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 #ifdef __GNUG__
  20     #pragma implementation "framebase.h"
  21 #endif
  22
  23 // For compilers that support precompilation, includes "wx.h".
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/frame.h"
  32     #include "wx/menu.h"
  33     #include "wx/menuitem.h"
  34     #include "wx/dcclient.h"
  35 #endif // WX_PRECOMP
  36
  37 #if wxUSE_TOOLBAR
  38     #include "wx/toolbar.h"
  39 #endif
  40 #if wxUSE_STATUSBAR
  41     #include "wx/statusbr.h"
  42 #endif
  43
  44 // ----------------------------------------------------------------------------
  45 // event table
  46 // ----------------------------------------------------------------------------
  47
  48 BEGIN_EVENT_TABLE(wxFrameBase, wxTopLevelWindow)
  49     EVT_IDLE(wxFrameBase::OnIdle)
  50     EVT_MENU_HIGHLIGHT_ALL(wxFrameBase::OnMenuHighlight)
  51 END_EVENT_TABLE()
  52
  53 // ============================================================================
  54 // implementation
  55 // ============================================================================
  56
  57 // ----------------------------------------------------------------------------
  58 // construction/destruction
  59 // ----------------------------------------------------------------------------
  60
  61 wxFrameBase::wxFrameBase()
  62 {
  63 #if wxUSE_MENUS
  64     m_frameMenuBar = NULL;
  65 #endif // wxUSE_MENUS
  66
  67 #if wxUSE_TOOLBAR
  68     m_frameToolBar = NULL;
  69 #endif // wxUSE_TOOLBAR
  70
  71 #if wxUSE_STATUSBAR
  72     m_frameStatusBar = NULL;
  73 #endif // wxUSE_STATUSBAR
  74
  75     m_statusBarPane = 0;
  76 }
  77
  78 wxFrameBase::~wxFrameBase()
  79 {
  80     // this destructor is required for Darwin
  81 }
  82
  83 wxFrame *wxFrameBase::New(wxWindow *parent,
  84                           wxWindowID id,
  85                           const wxString& title,
  86                           const wxPoint& pos,
  87                           const wxSize& size,
  88                           long style,
  89                           const wxString& name)
  90 {
  91     return new wxFrame(parent, id, title, pos, size, style, name);
  92 }
  93
  94 void wxFrameBase::DeleteAllBars()
  95 {
  96 #if wxUSE_MENUS
  97     if ( m_frameMenuBar )
  98     {
  99         delete m_frameMenuBar;
 100         m_frameMenuBar = (wxMenuBar *) NULL;
 101     }
 102 #endif // wxUSE_MENUS
 103
 104 #if wxUSE_STATUSBAR
 105     if ( m_frameStatusBar )
 106     {
 107         delete m_frameStatusBar;
 108         m_frameStatusBar = (wxStatusBar *) NULL;
 109     }
 110 #endif // wxUSE_STATUSBAR
 111
 112 #if wxUSE_TOOLBAR
 113     if ( m_frameToolBar )
 114     {
 115         delete m_frameToolBar;
 116         m_frameToolBar = (wxToolBar *) NULL;
 117     }
 118 #endif // wxUSE_TOOLBAR
 119 }
 120
 121 bool wxFrameBase::IsOneOfBars(const wxWindow *win) const
 122 {
 123 #if wxUSE_MENUS
 124     if ( win == GetMenuBar() )
 125         return TRUE;
 126 #endif // wxUSE_MENUS
 127
 128 #if wxUSE_STATUSBAR
 129     if ( win == GetStatusBar() )
 130         return TRUE;
 131 #endif // wxUSE_STATUSBAR
 132
 133 #if wxUSE_TOOLBAR
 134     if ( win == GetToolBar() )
 135         return TRUE;
 136 #endif // wxUSE_TOOLBAR
 137
 138     return FALSE;
 139 }
 140
 141 // ----------------------------------------------------------------------------
 142 // wxFrame size management: we exclude the areas taken by menu/status/toolbars
 143 // from the client area, so the client area is what's really available for the
 144 // frame contents
 145 // ----------------------------------------------------------------------------
 146
 147 // get the origin of the client area in the client coordinates
 148 wxPoint wxFrameBase::GetClientAreaOrigin() const
 149 {
 150     wxPoint pt = wxTopLevelWindow::GetClientAreaOrigin();
 151
 152 #if wxUSE_TOOLBAR && !defined(__WXUNIVERSAL__)
 153     wxToolBar *toolbar = GetToolBar();
 154     if ( toolbar && toolbar->IsShown() )
 155     {
 156         int w, h;
 157         toolbar->GetSize(&w, &h);
 158
 159         if ( toolbar->GetWindowStyleFlag() & wxTB_VERTICAL )
 160         {
 161             pt.x += w;
 162         }
 163         else
 164         {
 165             pt.y += h;
 166         }
 167     }
 168 #endif // wxUSE_TOOLBAR
 169
 170     return pt;
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // misc
 175 // ----------------------------------------------------------------------------
 176
 177 bool wxFrameBase::ProcessCommand(int id)
 178 {
 179 #if wxUSE_MENUS
 180     wxMenuBar *bar = GetMenuBar();
 181     if ( !bar )
 182         return FALSE;
 183
 184     wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, id);
 185     commandEvent.SetEventObject(this);
 186
 187     wxMenuItem *item = bar->FindItem(id);
 188     if (item)
 189     {
 190         if (!item->IsEnabled())
 191             return TRUE;
 192
 193         if (item->IsCheckable())
 194         {
 195             item->Toggle();
 196
 197             // use the new value
 198             commandEvent.SetInt(item->IsChecked());
 199         }
 200     }
 201
 202     return GetEventHandler()->ProcessEvent(commandEvent);
 203 #else // !wxUSE_MENUS
 204     return FALSE;
 205 #endif // wxUSE_MENUS/!wxUSE_MENUS
 206 }
 207
 208 // ----------------------------------------------------------------------------
 209 // event handlers
 210 // ----------------------------------------------------------------------------
 211
 212 void wxFrameBase::OnMenuHighlight(wxMenuEvent& event)
 213 {
 214 #if wxUSE_STATUSBAR
 215     (void)ShowMenuHelp(GetStatusBar(), event.GetMenuId());
 216 #endif // wxUSE_STATUSBAR
 217 }
 218
 219 void wxFrameBase::OnIdle(wxIdleEvent& WXUNUSED(event) )
 220 {
 221 #if wxUSE_MENUS
 222     DoMenuUpdates();
 223 #endif // wxUSE_MENUS
 224 }
 225
 226 // ----------------------------------------------------------------------------
 227 // status bar stuff
 228 // ----------------------------------------------------------------------------
 229
 230 #if wxUSE_STATUSBAR
 231
 232 wxStatusBar* wxFrameBase::CreateStatusBar(int number,
 233                                           long style,
 234                                           wxWindowID id,
 235                                           const wxString& name)
 236 {
 237     // the main status bar can only be created once (or else it should be
 238     // deleted before calling CreateStatusBar() again)
 239     wxCHECK_MSG( !m_frameStatusBar, (wxStatusBar *)NULL,
 240                  wxT("recreating status bar in wxFrame") );
 241
 242     m_frameStatusBar = OnCreateStatusBar( number, style, id, name );
 243     if ( m_frameStatusBar )
 244         PositionStatusBar();
 245
 246     return m_frameStatusBar;
 247 }
 248
 249 wxStatusBar *wxFrameBase::OnCreateStatusBar(int number,
 250                                             long style,
 251                                             wxWindowID id,
 252                                             const wxString& name)
 253 {
 254     wxStatusBar *statusBar = new wxStatusBar(this, id, style, name);
 255
 256     statusBar->SetFieldsCount(number);
 257
 258     return statusBar;
 259 }
 260
 261 void wxFrameBase::SetStatusText(const wxString& text, int number)
 262 {
 263     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 264
 265     m_frameStatusBar->SetStatusText(text, number);
 266 }
 267
 268 void wxFrameBase::SetStatusWidths(int n, const int widths_field[] )
 269 {
 270     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set widths for") );
 271
 272     m_frameStatusBar->SetStatusWidths(n, widths_field);
 273
 274     PositionStatusBar();
 275 }
 276
 277 void wxFrameBase::PushStatusText(const wxString& text, int number)
 278 {
 279     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 280
 281     m_frameStatusBar->PushStatusText(text, number);
 282 }
 283
 284 void wxFrameBase::PopStatusText(int number)
 285 {
 286     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 287
 288     m_frameStatusBar->PopStatusText(number);
 289 }
 290
 291 void wxFrameBase::DoGiveHelp(const wxString& text, bool show)
 292 {
 293 #if wxUSE_STATUSBAR
 294     if ( m_statusBarPane < 0 ) return;
 295     wxStatusBar* statbar = GetStatusBar();
 296     if ( !statbar ) return;
 297
 298     wxString help = show ? text : wxString();
 299     statbar->SetStatusText( help, m_statusBarPane );
 300 #endif // wxUSE_STATUSBAR
 301 }
 302
 303 bool wxFrameBase::ShowMenuHelp(wxStatusBar *WXUNUSED(statbar), int menuId)
 304 {
 305 #if wxUSE_MENUS
 306     // if no help string found, we will clear the status bar text
 307     wxString helpString;
 308     bool show = menuId != wxID_SEPARATOR && menuId != -2 /* wxID_TITLE */;
 309
 310     if ( show )
 311     {
 312         wxMenuBar *menuBar = GetMenuBar();
 313         if ( menuBar )
 314         {
 315             // it's ok if we don't find the item because it might belong
 316             // to the popup menu
 317             wxMenuItem *item = menuBar->FindItem(menuId);
 318             if ( item )
 319                 helpString = item->GetHelp();
 320         }
 321     }
 322
 323     DoGiveHelp(helpString, show);
 324
 325     return !helpString.IsEmpty();
 326 #else // !wxUSE_MENUS
 327     return FALSE;
 328 #endif // wxUSE_MENUS/!wxUSE_MENUS
 329 }
 330
 331 #endif // wxUSE_STATUSBAR
 332
 333 // ----------------------------------------------------------------------------
 334 // toolbar stuff
 335 // ----------------------------------------------------------------------------
 336
 337 #if wxUSE_TOOLBAR
 338
 339 wxToolBar* wxFrameBase::CreateToolBar(long style,
 340                                       wxWindowID id,
 341                                       const wxString& name)
 342 {
 343     // the main toolbar can't be recreated (unless it was explicitly deeleted
 344     // before)
 345     wxCHECK_MSG( !m_frameToolBar, (wxToolBar *)NULL,
 346                  wxT("recreating toolbar in wxFrame") );
 347
 348     m_frameToolBar = OnCreateToolBar(style, id, name);
 349
 350     return m_frameToolBar;
 351 }
 352
 353 wxToolBar* wxFrameBase::OnCreateToolBar(long style,
 354                                         wxWindowID id,
 355                                         const wxString& name)
 356 {
 357     return new wxToolBar(this, id,
 358                          wxDefaultPosition, wxDefaultSize,
 359                          style, name);
 360 }
 361
 362 #endif // wxUSE_TOOLBAR
 363
 364 // ----------------------------------------------------------------------------
 365 // menus
 366 // ----------------------------------------------------------------------------
 367
 368 #if wxUSE_MENUS
 369
 370 // update all menus
 371 void wxFrameBase::DoMenuUpdates()
 372 {
 373     wxMenuBar* bar = GetMenuBar();
 374
 375 #ifdef __WXMSW__
 376     wxWindow* focusWin = wxFindFocusDescendant((wxWindow*) this);
 377 #else
 378     wxWindow* focusWin = (wxWindow*) NULL;
 379 #endif
 380     if ( bar != NULL )
 381     {
 382         int nCount = bar->GetMenuCount();
 383         for (int n = 0; n < nCount; n++)
 384             DoMenuUpdates(bar->GetMenu(n), focusWin);
 385     }
 386 }
 387
 388 // update a menu and all submenus recursively
 389 void wxFrameBase::DoMenuUpdates(wxMenu* menu, wxWindow* focusWin)
 390 {
 391     wxEvtHandler* evtHandler = focusWin ? focusWin->GetEventHandler() : GetEventHandler();
 392     wxMenuItemList::Node* node = menu->GetMenuItems().GetFirst();
 393     while (node)
 394     {
 395         wxMenuItem* item = node->GetData();
 396         if ( !item->IsSeparator() )
 397         {
 398             wxWindowID id = item->GetId();
 399             wxUpdateUIEvent event(id);
 400             event.SetEventObject( this );
 401
 402             if (evtHandler->ProcessEvent(event))
 403             {
 404                 if (event.GetSetText())
 405                     menu->SetLabel(id, event.GetText());
 406                 if (event.GetSetChecked())
 407                     menu->Check(id, event.GetChecked());
 408                 if (event.GetSetEnabled())
 409                     menu->Enable(id, event.GetEnabled());
 410             }
 411
 412             if (item->GetSubMenu())
 413                 DoMenuUpdates(item->GetSubMenu(), (wxWindow*) NULL);
 414         }
 415         node = node->GetNext();
 416     }
 417 }
 418
 419 void wxFrameBase::DetachMenuBar()
 420 {
 421     if ( m_frameMenuBar )
 422     {
 423         m_frameMenuBar->Detach();
 424         m_frameMenuBar = NULL;
 425     }
 426 }
 427
 428 void wxFrameBase::AttachMenuBar(wxMenuBar *menubar)
 429 {
 430     if ( menubar )
 431     {
 432         menubar->Attach((wxFrame *)this);
 433         m_frameMenuBar = menubar;
 434     }
 435 }
 436
 437 void wxFrameBase::SetMenuBar(wxMenuBar *menubar)
 438 {
 439     if ( menubar == GetMenuBar() )
 440     {
 441         // nothing to do
 442         return;
 443     }
 444
 445     DetachMenuBar();
 446
 447     AttachMenuBar(menubar);
 448 }
 449
 450 #endif // wxUSE_MENUS