include/wx/mdi.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/mdi.h
   3 // Purpose:     wxMDI base header
   4 // Author:      Julian Smart (original)
   5 //              Vadim Zeitlin (base MDI classes refactoring)
   6 // Copyright:   (c) 1998 Julian Smart
   7 //              (c) 2008 Vadim Zeitlin
   8 // RCS-ID:      $Id$
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_MDI_H_BASE_
  13 #define _WX_MDI_H_BASE_
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_MDI
  18
  19 #include "wx/frame.h"
  20 #include "wx/menu.h"
  21
  22 // forward declarations
  23 class WXDLLIMPEXP_FWD_CORE wxMDIParentFrame;
  24 class WXDLLIMPEXP_FWD_CORE wxMDIChildFrame;
  25 class WXDLLIMPEXP_FWD_CORE wxMDIClientWindowBase;
  26 class WXDLLIMPEXP_FWD_CORE wxMDIClientWindow;
  27
  28 // ----------------------------------------------------------------------------
  29 // wxMDIParentFrameBase: base class for parent frame for MDI children
  30 // ----------------------------------------------------------------------------
  31
  32 class WXDLLIMPEXP_CORE wxMDIParentFrameBase : public wxFrame
  33 {
  34 public:
  35     wxMDIParentFrameBase()
  36     {
  37         m_clientWindow = NULL;
  38         m_currentChild = NULL;
  39 #if wxUSE_MENUS
  40         m_windowMenu = NULL;
  41 #endif // wxUSE_MENUS
  42     }
  43
  44     /*
  45         Derived classes should provide ctor and Create() with the following
  46         declaration:
  47
  48     bool Create(wxWindow *parent,
  49                 wxWindowID winid,
  50                 const wxString& title,
  51                 const wxPoint& pos = wxDefaultPosition,
  52                 const wxSize& size = wxDefaultSize,
  53                 long style = wxDEFAULT_FRAME_STYLE | wxVSCROLL | wxHSCROLL,
  54                 const wxString& name = wxFrameNameStr);
  55      */
  56
  57 #if wxUSE_MENUS
  58     virtual ~wxMDIParentFrameBase()
  59     {
  60         delete m_windowMenu;
  61     }
  62 #endif // wxUSE_MENUS
  63
  64     // accessors
  65     // ---------
  66
  67     // Get or change the active MDI child window
  68     virtual wxMDIChildFrame *GetActiveChild() const
  69         { return m_currentChild; }
  70     virtual void SetActiveChild(wxMDIChildFrame *child)
  71         { m_currentChild = child; }
  72
  73
  74     // Get the client window
  75     wxMDIClientWindowBase *GetClientWindow() const { return m_clientWindow; }
  76
  77
  78     // MDI windows menu functions
  79     // --------------------------
  80
  81 #if wxUSE_MENUS
  82     // return the pointer to the current window menu or NULL if we don't have
  83     // because of wxFRAME_NO_WINDOW_MENU style
  84     wxMenu* GetWindowMenu() const { return m_windowMenu; };
  85
  86     // use the given menu instead of the default window menu
  87     //
  88     // menu can be NULL to disable the window menu completely
  89     virtual void SetWindowMenu(wxMenu *menu)
  90     {
  91         if ( menu != m_windowMenu )
  92         {
  93             delete m_windowMenu;
  94             m_windowMenu = menu;
  95         }
  96     }
  97 #endif // wxUSE_MENUS
  98
  99
 100     // standard MDI window management functions
 101     // ----------------------------------------
 102
 103     virtual void Cascade() { }
 104     virtual void Tile(wxOrientation WXUNUSED(orient) = wxHORIZONTAL) { }
 105     virtual void ArrangeIcons() { }
 106     virtual void ActivateNext() = 0;
 107     virtual void ActivatePrevious() = 0;
 108
 109     /*
 110         Derived classes must provide the following function:
 111
 112     static bool IsTDI();
 113     */
 114
 115     // Create the client window class (don't Create() the window here, just
 116     // return a new object of a wxMDIClientWindow-derived class)
 117     //
 118     // Notice that if you override this method you should use the default
 119     // constructor and Create() and not the constructor creating the window
 120     // when creating the frame or your overridden version is not going to be
 121     // called (as the call to a virtual function from ctor will be dispatched
 122     // to this class version)
 123     virtual wxMDIClientWindow *OnCreateClient();
 124
 125 protected:
 126     // This is wxMDIClientWindow for all the native implementations but not for
 127     // the generic MDI version which has its own wxGenericMDIClientWindow and
 128     // so we store it as just a base class pointer because we don't need its
 129     // exact type anyhow
 130     wxMDIClientWindowBase *m_clientWindow;
 131     wxMDIChildFrame *m_currentChild;
 132
 133 #if wxUSE_MENUS
 134     // the current window menu or NULL if we are not using it
 135     wxMenu *m_windowMenu;
 136 #endif // wxUSE_MENUS
 137 };
 138
 139 // ----------------------------------------------------------------------------
 140 // wxMDIChildFrameBase: child frame managed by wxMDIParentFrame
 141 // ----------------------------------------------------------------------------
 142
 143 class WXDLLIMPEXP_CORE wxMDIChildFrameBase : public wxFrame
 144 {
 145 public:
 146     wxMDIChildFrameBase() { m_mdiParent = NULL; }
 147
 148     /*
 149         Derived classes should provide Create() with the following signature:
 150
 151     bool Create(wxMDIParentFrame *parent,
 152                 wxWindowID id,
 153                 const wxString& title,
 154                 const wxPoint& pos = wxDefaultPosition,
 155                 const wxSize& size = wxDefaultSize,
 156                 long style = wxDEFAULT_FRAME_STYLE,
 157                 const wxString& name = wxFrameNameStr);
 158
 159         And setting m_mdiParent to parent parameter.
 160      */
 161
 162     // MDI children specific methods
 163     virtual void Activate() = 0;
 164
 165     // Return the MDI parent frame: notice that it may not be the same as
 166     // GetParent() (our parent may be the client window or even its subwindow
 167     // in some implementations)
 168     wxMDIParentFrame *GetMDIParent() const { return m_mdiParent; }
 169
 170     // Synonym for GetMDIParent(), was used in some other ports
 171     wxMDIParentFrame *GetMDIParentFrame() const { return GetMDIParent(); }
 172
 173
 174     // in most ports MDI children frames are not really top-level, the only
 175     // exception are the Mac ports in which MDI children are just normal top
 176     // level windows too
 177     virtual bool IsTopLevel() const { return false; }
 178
 179 protected:
 180     wxMDIParentFrame *m_mdiParent;
 181 };
 182
 183 // ----------------------------------------------------------------------------
 184 // wxTDIChildFrame: child frame used by TDI implementations
 185 // ----------------------------------------------------------------------------
 186
 187 class WXDLLIMPEXP_CORE wxTDIChildFrame : public wxMDIChildFrameBase
 188 {
 189 public:
 190     // override wxFrame methods for this non top-level window
 191
 192 #if wxUSE_STATUSBAR
 193     // no status bars
 194     //
 195     // TODO: MDI children should have their own status bars, why not?
 196     virtual wxStatusBar* CreateStatusBar(int WXUNUSED(number) = 1,
 197                                          long WXUNUSED(style) = 1,
 198                                          wxWindowID WXUNUSED(id) = 1,
 199                                          const wxString& WXUNUSED(name)
 200                                             = wxEmptyString)
 201       { return NULL; }
 202
 203     virtual wxStatusBar *GetStatusBar() const
 204         { return NULL; }
 205     virtual void SetStatusText(const wxString &WXUNUSED(text),
 206                                int WXUNUSED(number)=0)
 207         { }
 208     virtual void SetStatusWidths(int WXUNUSED(n),
 209                                  const int WXUNUSED(widths)[])
 210         { }
 211 #endif // wxUSE_STATUSBAR
 212
 213 #if wxUSE_TOOLBAR
 214     // no toolbar
 215     //
 216     // TODO: again, it should be possible to have tool bars
 217     virtual wxToolBar *CreateToolBar(long WXUNUSED(style),
 218                                      wxWindowID WXUNUSED(id),
 219                                      const wxString& WXUNUSED(name))
 220         { return NULL; }
 221     virtual wxToolBar *GetToolBar() const { return NULL; }
 222 #endif // wxUSE_TOOLBAR
 223
 224     // no icon
 225     virtual void SetIcons(const wxIconBundle& WXUNUSED(icons)) { }
 226
 227     // title is used as the tab label
 228     virtual wxString GetTitle() const { return m_title; }
 229     virtual void SetTitle(const wxString& title) = 0;
 230
 231     // no maximize etc
 232     virtual void Maximize(bool WXUNUSED(maximize) = true) { }
 233     virtual bool IsMaximized() const { return true; }
 234     virtual bool IsAlwaysMaximized() const { return true; }
 235     virtual void Iconize(bool WXUNUSED(iconize) = true) { }
 236     virtual bool IsIconized() const { return false; }
 237     virtual void Restore() { }
 238
 239     virtual bool ShowFullScreen(bool WXUNUSED(show),
 240                                 long WXUNUSED(style)) { return false; }
 241     virtual bool IsFullScreen() const { return false; }
 242
 243
 244     // we need to override these functions to ensure that a child window is
 245     // created even though we derive from wxFrame -- basically we make it
 246     // behave as just a wxWindow by short-circuiting wxTLW changes to the base
 247     // class behaviour
 248
 249     virtual void AddChild(wxWindowBase *child) { wxWindow::AddChild(child); }
 250
 251     virtual bool Destroy() { return wxWindow::Destroy(); }
 252
 253     // extra platform-specific hacks
 254 #ifdef __WXMSW__
 255     virtual WXDWORD MSWGetStyle(long flags, WXDWORD *exstyle = NULL) const
 256     {
 257         return wxWindow::MSWGetStyle(flags, exstyle);
 258     }
 259
 260     virtual WXHWND MSWGetParent() const
 261     {
 262         return wxWindow::MSWGetParent();
 263     }
 264
 265     WXLRESULT MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 266     {
 267         return wxWindow::MSWWindowProc(message, wParam, lParam);
 268     }
 269 #endif // __WXMSW__
 270
 271 protected:
 272     virtual void DoGetSize(int *width, int *height) const
 273     {
 274         wxWindow::DoGetSize(width, height);
 275     }
 276
 277     virtual void DoSetSize(int x, int y, int width, int height, int sizeFlags)
 278     {
 279         wxWindow::DoSetSize(x, y, width, height, sizeFlags);
 280     }
 281
 282     virtual void DoGetClientSize(int *width, int *height) const
 283     {
 284         wxWindow::DoGetClientSize(width, height);
 285     }
 286
 287     virtual void DoSetClientSize(int width, int height)
 288     {
 289         wxWindow::DoSetClientSize(width, height);
 290     }
 291
 292     // no size hints
 293     virtual void DoSetSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 294                                 int WXUNUSED(maxW), int WXUNUSED(maxH),
 295                                 int WXUNUSED(incW), int WXUNUSED(incH)) { }
 296
 297     wxString m_title;
 298 };
 299
 300 // ----------------------------------------------------------------------------
 301 // wxMDIClientWindowBase: child of parent frame, parent of children frames
 302 // ----------------------------------------------------------------------------
 303
 304 class WXDLLIMPEXP_CORE wxMDIClientWindowBase : public wxWindow
 305 {
 306 public:
 307     /*
 308         The derived class must provide the default ctor only (CreateClient()
 309         will be called later).
 310     */
 311
 312     // Can be overridden in the derived classes but the base class version must
 313     // be usually called first to really create the client window.
 314     virtual bool CreateClient(wxMDIParentFrame *parent,
 315                               long style = wxVSCROLL | wxHSCROLL) = 0;
 316 };
 317
 318 // ----------------------------------------------------------------------------
 319 // Include the port-specific implementation of the base classes defined above
 320 // ----------------------------------------------------------------------------
 321
 322 // wxUSE_GENERIC_MDI_AS_NATIVE may be predefined to force the generic MDI
 323 // implementation use even on the platforms which usually don't use it
 324 //
 325 // notice that generic MDI can still be used without this, but you would need
 326 // to explicitly use wxGenericMDIXXX classes in your code (and currently also
 327 // add src/generic/mdig.cpp to your build as it's not compiled in if generic
 328 // MDI is not used by default -- but this may change later...)
 329 #ifndef wxUSE_GENERIC_MDI_AS_NATIVE
 330     // wxUniv always uses the generic MDI implementation and so do the ports
 331     // without native version (although wxCocoa seems to have one -- but it's
 332     // probably not functional?)
 333     #if defined(__WXCOCOA__) || \
 334         defined(__WXMOTIF__) || \
 335         defined(__WXPM__) || \
 336         defined(__WXUNIVERSAL__)
 337         #define wxUSE_GENERIC_MDI_AS_NATIVE   1
 338     #else
 339         #define wxUSE_GENERIC_MDI_AS_NATIVE   0
 340     #endif
 341 #endif // wxUSE_GENERIC_MDI_AS_NATIVE
 342
 343 #if wxUSE_GENERIC_MDI_AS_NATIVE
 344     #include "wx/generic/mdig.h"
 345 #elif defined(__WXMSW__)
 346     #include "wx/msw/mdi.h"
 347 #elif defined(__WXGTK20__)
 348     #include "wx/gtk/mdi.h"
 349 #elif defined(__WXGTK__)
 350     #include "wx/gtk1/mdi.h"
 351 #elif defined(__WXMAC__)
 352     #include "wx/osx/mdi.h"
 353 #elif defined(__WXCOCOA__)
 354     #include "wx/cocoa/mdi.h"
 355 #endif
 356
 357 inline wxMDIClientWindow *wxMDIParentFrameBase::OnCreateClient()
 358 {
 359     return new wxMDIClientWindow;
 360 }
 361
 362 #endif // wxUSE_MDI
 363
 364 #endif // _WX_MDI_H_BASE_