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Added wxRegion version of wxWindowDC::SetClippingRegion

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1098 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart
1998-12-02 20:02:01 +00:00
parent f66b7050e0
commit a724d7892d
12 changed files with 91 additions and 13 deletions
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23
src/msw/dc.cpp
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@@ -181,6 +181,22 @@ void wxDC::SetClippingRegion(long cx, long cy, long cw, long ch)
DoClipping((WXHDC) m_hDC);
}
void wxDC::SetClippingRegion(const wxRegion& region)
{
if (!region.GetHRGN())
return;
wxRect box = region.GetBox();
m_clipping = TRUE;
m_clipX1 = box.x;
m_clipY1 = box.y;
m_clipX2 = box.x + box.width;
m_clipY2 = box.y + box.height;
ExtSelectClipRgn((HDC) m_hDC, (HRGN) region.GetHRGN(), RGN_AND);
}
void wxDC::DoClipping(WXHDC dc)
{
if (m_clipping && dc)
@@ -194,11 +210,14 @@ void wxDC::DestroyClippingRegion(void)
{
if (m_clipping && m_hDC)
{
// TODO: this should restore the previous clipping region,
// so that OnPaint processing works correctly, and the update clipping region
// doesn't get destroyed after the first DestroyClippingRegion.
HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
SelectClipRgn((HDC) m_hDC, rgn);
DeleteObject(rgn);
}
m_clipping = FALSE;
}
m_clipping = FALSE;
}
bool wxDC::CanDrawBitmap(void) const