// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
+// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "dcclient.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/arrimpl.cpp"
-WX_DEFINE_OBJARRAY(wxArrayDCInfo);
+WX_DEFINE_OBJARRAY(wxArrayDCInfo)
// ----------------------------------------------------------------------------
// macros
IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
-IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC)
+IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
+IMPLEMENT_CLASS(wxPaintDCEx, wxPaintDC)
// ----------------------------------------------------------------------------
// global variables
#ifdef __WXDEBUG__
// a global variable which we check to verify that wxPaintDC are only
- // created in resopnse to WM_PAINT message - doing this from elsewhere is a
- // common programming error among wxWindows programmers and might lead to
+ // created in response to WM_PAINT message - doing this from elsewhere is a
+ // common programming error among wxWidgets programmers and might lead to
// very subtle and difficult to debug refresh/repaint bugs.
int g_isPainting = 0;
#endif // __WXDEBUG__
// m_bOwnsDC was already set to false in the base class ctor, so the DC
// will be released (and not deleted) in ~wxDC
-
InitDC();
}
// default bg colour is pne of the window
SetBackground(wxBrush(m_canvas->GetBackgroundColour(), wxSOLID));
+
+ // since we are a window dc we need to grab the palette from the window
+#if wxUSE_PALETTE
+ InitializePalette();
+#endif
+}
+
+void wxWindowDC::DoGetSize(int *width, int *height) const
+{
+ wxCHECK_RET( m_canvas, _T("wxWindowDC without a window?") );
+
+ m_canvas->GetSize(width, height);
}
// ----------------------------------------------------------------------------
InitDC();
}
+void wxClientDC::InitDC()
+{
+ wxWindowDC::InitDC();
+
+ // in wxUniv build we must manually do some DC adjustments usually
+ // performed by Windows for us
+ //
+ // we also need to take the menu/toolbar manually into account under
+ // Windows CE because they're just another control there, not anything
+ // special as usually under Windows
+#if defined(__WXUNIVERSAL__) || defined(__WXWINCE__)
+ wxPoint ptOrigin = m_canvas->GetClientAreaOrigin();
+ if ( ptOrigin.x || ptOrigin.y )
+ {
+ // no need to shift DC origin if shift is null
+ SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
+ }
+
+ // clip the DC to avoid overwriting the non client area
+ SetClippingRegion(wxPoint(0,0), m_canvas->GetClientSize());
+#endif // __WXUNIVERSAL__ || __WXWINCE__
+}
+
+wxClientDC::~wxClientDC()
+{
+}
+
+void wxClientDC::DoGetSize(int *width, int *height) const
+{
+ wxCHECK_RET( m_canvas, _T("wxClientDC without a window?") );
+
+ m_canvas->GetClientSize(width, height);
+}
+
// ----------------------------------------------------------------------------
// wxPaintDC
// ----------------------------------------------------------------------------
else // not in cache, create a new one
{
m_hDC = (WXHDC)::BeginPaint(GetHwndOf(m_canvas), &g_paintStruct);
- ms_cache.Add(new wxPaintDCInfo(m_canvas, this));
+ if (m_hDC)
+ ms_cache.Add(new wxPaintDCInfo(m_canvas, this));
}
- InitDC();
+ // (re)set the DC parameters.
+ // Note: at this point m_hDC can be NULL under MicroWindows, when dragging.
+ if (GetHDC())
+ InitDC();
}
wxPaintDC::~wxPaintDC()
{
::EndPaint(GetHwndOf(m_canvas), &g_paintStruct);
- ms_cache.Remove(index);
+ ms_cache.RemoveAt(index);
// Reduce the number of bogus reports of non-freed memory
// at app exit
size_t nCache = ms_cache.GetCount();
for ( size_t n = 0; n < nCache; n++ )
{
- info = &ms_cache[n];
- if ( info->hwnd == m_canvas->GetHWND() )
+ wxPaintDCInfo *info1 = &ms_cache[n];
+ if ( info1->hwnd == m_canvas->GetHWND() )
{
+ info = info1;
if ( index )
*index = n;
break;
// find the entry for this DC in the cache (keyed by the window)
WXHDC wxPaintDC::FindDCInCache(wxWindow* win)
{
- wxPaintDCInfo *info = NULL;
size_t nCache = ms_cache.GetCount();
for ( size_t n = 0; n < nCache; n++ )
{
- info = &ms_cache[n];
+ wxPaintDCInfo *info = &ms_cache[n];
if ( info->hwnd == win->GetHWND() )
{
return info->hdc;
return 0;
}
+/*
+ * wxPaintDCEx
+ */
+
+// TODO: don't duplicate wxPaintDC code here!!
+
+wxPaintDCEx::wxPaintDCEx(wxWindow *canvas, WXHDC dc) : saveState(0)
+{
+ wxCHECK_RET( dc, wxT("wxPaintDCEx requires an existing device context") );
+
+ m_canvas = canvas;
+
+ wxPaintDCInfo *info = FindInCache();
+ if ( info )
+ {
+ m_hDC = info->hdc;
+ info->count++;
+ }
+ else // not in cache, create a new one
+ {
+ m_hDC = dc;
+ ms_cache.Add(new wxPaintDCInfo(m_canvas, this));
+ saveState = SaveDC((HDC) dc);
+ }
+}
+
+wxPaintDCEx::~wxPaintDCEx()
+{
+ size_t index;
+ wxPaintDCInfo *info = FindInCache(&index);
+
+ wxCHECK_RET( info, wxT("existing DC should have a cache entry") );
+
+ if ( !--info->count )
+ {
+ RestoreDC((HDC) m_hDC, saveState);
+ ms_cache.RemoveAt(index);
+
+ // Reduce the number of bogus reports of non-freed memory
+ // at app exit
+ if (ms_cache.IsEmpty())
+ ms_cache.Clear();
+ }
+ //else: cached DC entry is still in use
+
+ // prevent the base class dtor from ReleaseDC()ing it again
+ m_hDC = 0;
+}
+
projects / wxWidgets.git / blobdiff