m_pCanvas = pTheCanvas;
m_hDC = (WXHDC) ::WinOpenWindowDC(GetWinHwnd(pTheCanvas) );
- m_nDCCount++;
+
//
// default under PM is that Window and Client DC's are the same
// so we offer a separate Presentation Space to use for the
// entire window. Otherwise, calling BeginPaint will just create
// chached-micro client presentation space
//
- m_hPS = GpiCreatePS( m_hab
- ,m_hDC
- ,&m_PageSize
- ,PU_PELS | GPIF_LONG | GPIA_ASSOC
- );
+ m_hPS = ::GpiCreatePS( vHabmain
+ ,m_hDC
+ ,&m_PageSize
+ ,PU_PELS | GPIF_LONG | GPIA_ASSOC
+ );
::GpiAssociate(m_hPS, NULLHANDLE);
::GpiAssociate(m_hPS, m_hDC);
+
+ //
// Set the wxWindows color table
+ //
if (!::GpiCreateLogColorTable( m_hPS
,0L
,LCOLF_CONSECRGB
sError = wxPMErrorToStr(vError);
wxLogError("Unable to set current color table. Error: %s\n", sError);
}
- SetBackground(wxBrush(m_pCanvas->GetBackgroundColour(), wxSOLID));
-}
+ ::GpiCreateLogColorTable( m_hPS
+ ,0L
+ ,LCOLF_RGB
+ ,0L
+ ,0L
+ ,NULL
+ );
+ ::WinQueryWindowRect( GetWinHwnd(m_pCanvas)
+ ,&m_vRclPaint
+ );
+ InitDC();
+} // end of wxWindowDC::wxWindowDC
-wxWindowDC::~wxWindowDC()
+void wxWindowDC::InitDC()
{
- if (m_pCanvas && m_hDC)
- {
- SelectOldObjects(m_hDC);
+ //
+ // The background mode is only used for text background and is set in
+ // DrawText() to OPAQUE as required, otherwise always TRANSPARENT,
+ //
+ ::GpiSetBackMix(GetHPS(), BM_LEAVEALONE);
- //
- // In PM one does not explicitly close or release an open WindowDC
- // They automatically close with the window, unless explicitly detached
- // but we need to destroy our PS
- //
- if(m_hPS)
- {
- ::GpiAssociate(m_hPS, NULLHANDLE);
- ::GpiDestroyPS(m_hPS);
- }
- m_hPS = NULLHANDLE;
- m_hDC = NULLHANDLE;
- }
- m_nDCCount--;
-}
+ //
+ // Default bg colour is pne of the window
+ //
+ SetBackground(wxBrush(m_pCanvas->GetBackgroundColour(), wxSOLID));
+} // end of wxWindowDC::InitDC
// ----------------------------------------------------------------------------
// wxClientDC
sError = wxPMErrorToStr(vError);
wxLogError("Unable to set current color table. Error: %s\n", sError);
}
+ ::GpiCreateLogColorTable( m_hPS
+ ,0L
+ ,LCOLF_RGB
+ ,0L
+ ,0L
+ ,NULL
+ );
//
- // Default mode is BM_LEAVEALONE so we make no call Set the mix
+ // Set the DC/PS rectangle
//
- SetBackground(wxBrush( m_pCanvas->GetBackgroundColour()
- ,wxSOLID
- )
- );
+ ::WinQueryWindowRect( GetWinHwnd(m_pCanvas)
+ ,&m_vRclPaint
+ );
+ InitDC();
} // end of wxClientDC::wxClientDC
-wxClientDC::~wxClientDC()
-{
- if ( m_pCanvas && GetHdc() )
- {
- SelectOldObjects(m_hDC);
-
- //
- // We don't explicitly release Device contexts in PM and
- // the cached micro PS is already gone
- //
- m_hDC = 0;
- }
-} // end of wxClientDC::~wxClientDC
-
// ----------------------------------------------------------------------------
// wxPaintDC
// ----------------------------------------------------------------------------
-// VZ: initial implementation (by JACS) only remembered the last wxPaintDC
-// created and tried to reuse - this was supposed to take care of a
-// situation when a derived class OnPaint() calls base class OnPaint()
-// because in this case ::BeginPaint() shouldn't be called second time.
-//
-// I'm not sure how useful this is, however we must remember the HWND
-// associated with the last HDC as well - otherwise we may (and will!) try
-// to reuse the HDC for another HWND which is a nice recipe for disaster.
-//
-// So we store a list of windows for which we already have the DC and not
-// just one single hDC. This seems to work, but I'm really not sure about
-// the usefullness of the whole idea - IMHO it's much better to not call
-// base class OnPaint() at all, or, if we really want to allow it, add a
-// "wxPaintDC *" parameter to wxPaintEvent which should be used if it's
-// !NULL instead of creating a new DC.
-
wxArrayDCInfo wxPaintDC::ms_cache;
wxPaintDC::wxPaintDC()
)
{
wxCHECK_RET(pCanvas, wxT("NULL canvas in wxPaintDC ctor"));
- RECTL vRect;
#ifdef __WXDEBUG__
if (g_isPainting <= 0)
);
if(hPS)
{
- POINTL vPoint[2];
- LONG lControl;
- LONG lColor;
-
m_hOldPS = m_hPS;
m_hPS = hPS;
::GpiCreateLogColorTable( m_hPS
);
::WinFillRect(hPS, &g_paintStruct, m_pCanvas->GetBackgroundColour().GetPixel());
+ ::WinQueryWindowRect( GetWinHwnd(m_pCanvas)
+ ,&m_vRclPaint
+ );
}
m_bIsPaintTime = TRUE;
m_hDC = (WXHDC) -1; // to satisfy those anonizmous efforts
- m_vRclPaint = g_paintStruct;
ms_cache.Add(new wxPaintDCInfo(m_pCanvas, this));
}
- SetBackground(wxBrush(m_pCanvas->GetBackgroundColour(), wxSOLID));
-}
+ InitDC();
+} // end of wxPaintDC::wxPaintDC
wxPaintDC::~wxPaintDC()
{
return pInfo;
} // end of wxPaintDC::FindInCache
+// find the entry for this DC in the cache (keyed by the window)
+WXHDC wxPaintDC::FindDCInCache(
+ wxWindow* pWin
+)
+{
+ wxPaintDCInfo* pInfo = NULL;
+ size_t nCache = ms_cache.GetCount();
+
+ for (size_t n = 0; n < nCache; n++)
+ {
+ pInfo = &ms_cache[n];
+ if (pInfo->m_hWnd == pWin->GetHWND())
+ {
+ return pInfo->m_hDC;
+ }
+ }
+ return 0;
+} // end of wxPaintDC::FindInCache
+
projects / wxWidgets.git / blobdiff