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