+wxDisplayImpl *wxDisplayFactoryDirectDraw::CreateDisplay(unsigned n)
+{
+ wxCHECK_MSG( n < m_displays.size(), NULL, _T("invalid display index") );
+
+ wxDisplayInfoDirectDraw *
+ info = wx_static_cast(wxDisplayInfoDirectDraw *, m_displays[n]);
+
+ if ( !info->m_pDD2 )
+ {
+ IDirectDraw *pDD;
+ GUID guid(info->m_guid);
+ HRESULT hr = (*m_pfnDirectDrawCreate)(&guid, &pDD, NULL);
+
+ if ( FAILED(hr) || !pDD )
+ {
+ // what to do??
+ wxLogApiError(_T("DirectDrawCreate"), hr);
+ return NULL;
+ }
+
+ // we got IDirectDraw, but we need IDirectDraw2
+ hr = pDD->QueryInterface(wxIID_IDirectDraw2, (void **)&info->m_pDD2);
+ pDD->Release();
+
+ if ( FAILED(hr) || !info->m_pDD2 )
+ {
+ wxLogApiError(_T("IDirectDraw::QueryInterface(IDD2)"), hr);
+ return NULL;
+ }
+
+ // NB: m_pDD2 will now be only destroyed when m_displays is destroyed
+ // which is ok as we don't want to recreate DD objects all the time
+ }
+ //else: DirectDraw object corresponding to our display already exists
+
+ return new wxDisplayImplDirectDraw(n, *info, info->m_pDD2);
+}
+
+// ============================================================================
+// wxDisplayImplDirectDraw
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// video modes enumeration
+// ----------------------------------------------------------------------------
+
+// tiny helper class used to pass information from GetModes() to
+// wxDDEnumModesCallback
+class wxDDVideoModesAdder
+{
+public:
+ // our Add() method will add modes matching modeMatch to modes array
+ wxDDVideoModesAdder(wxArrayVideoModes& modes, const wxVideoMode& modeMatch)
+ : m_modes(modes),
+ m_modeMatch(modeMatch)
+ {
+ }
+
+ void Add(const wxVideoMode& mode)
+ {
+ if ( mode.Matches(m_modeMatch) )
+ m_modes.Add(mode);
+ }
+
+private:
+ wxArrayVideoModes& m_modes;
+ const wxVideoMode& m_modeMatch;
+
+ DECLARE_NO_COPY_CLASS(wxDDVideoModesAdder)
+};
+
+HRESULT WINAPI wxDDEnumModesCallback(LPDDSURFACEDESC lpDDSurfaceDesc,
+ LPVOID lpContext)
+{
+ // we need at least the mode size
+ static const DWORD FLAGS_REQUIRED = DDSD_HEIGHT | DDSD_WIDTH;
+ if ( (lpDDSurfaceDesc->dwFlags & FLAGS_REQUIRED) == FLAGS_REQUIRED )
+ {
+ wxDDVideoModesAdder * const vmodes =
+ wx_static_cast(wxDDVideoModesAdder *, lpContext);
+
+ vmodes->Add(wxVideoMode(lpDDSurfaceDesc->dwWidth,
+ lpDDSurfaceDesc->dwHeight,
+ lpDDSurfaceDesc->ddpfPixelFormat.dwRGBBitCount,
+ lpDDSurfaceDesc->dwRefreshRate));
+ }
+
+ // continue the enumeration
+ return DDENUMRET_OK;
+}
+
+wxArrayVideoModes
+wxDisplayImplDirectDraw::GetModes(const wxVideoMode& modeMatch) const
+{
+ wxArrayVideoModes modes;
+ wxDDVideoModesAdder modesAdder(modes, modeMatch);
+
+ HRESULT hr = m_pDD2->EnumDisplayModes
+ (
+ DDEDM_REFRESHRATES,
+ NULL, // all modes
+ &modesAdder, // callback parameter
+ wxDDEnumModesCallback
+ );
+
+ if ( FAILED(hr) )
+ {
+ wxLogApiError(_T("IDirectDraw::EnumDisplayModes"), hr);
+ }
+
+ return modes;
+}
+
+// ----------------------------------------------------------------------------
+// video mode switching
+// ----------------------------------------------------------------------------
+
+bool wxDisplayImplDirectDraw::ChangeMode(const wxVideoMode& mode)
+{
+ wxWindow *winTop = wxTheApp->GetTopWindow();
+ wxCHECK_MSG( winTop, false, _T("top level window required for DirectX") );
+
+ HRESULT hr = m_pDD2->SetCooperativeLevel
+ (
+ GetHwndOf(winTop),
+ DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN
+ );
+ if ( FAILED(hr) )
+ {
+ wxLogApiError(_T("IDirectDraw2::SetCooperativeLevel"), hr);
+
+ return false;
+ }
+
+ hr = m_pDD2->SetDisplayMode(mode.w, mode.h, mode.bpp, mode.refresh, 0);
+ if ( FAILED(hr) )
+ {
+ wxLogApiError(_T("IDirectDraw2::SetDisplayMode"), hr);
+
+ return false;
+ }
+
+ return true;
+}
+
+#endif // wxUSE_DIRECTDRAW
+
+#endif // wxUSE_DISPLAY
projects / wxWidgets.git / blobdiff