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use virtual size for the size of the buffer when wxBUFFER_VIRTUAL_AREA style is used [backport from HEAD]

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@44609 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2007-03-05 08:58:09 +00:00
parent a42fc8644c
commit c5effe4953
1 changed files with 11 additions and 2 deletions
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13
include/wx/dcbuffer.h
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@@ -173,7 +173,7 @@ public:
if( buffer.IsOk() ) if( buffer.IsOk() )
Init(&m_paintdc, buffer, style); Init(&m_paintdc, buffer, style);
else else
Init(&m_paintdc, window->GetClientSize(), style); Init(&m_paintdc, GetBufferedSize(window, style), style);
} }
// If no bitmap is supplied by the user, a temporary one will be created. // If no bitmap is supplied by the user, a temporary one will be created.
@@ -184,7 +184,7 @@ public:
if (style & wxBUFFER_VIRTUAL_AREA) if (style & wxBUFFER_VIRTUAL_AREA)
window->PrepareDC( m_paintdc ); window->PrepareDC( m_paintdc );
Init(&m_paintdc, window->GetClientSize(), style); Init(&m_paintdc, GetBufferedSize(window, style), style);
} }
// default copy ctor ok. // default copy ctor ok.
@@ -196,6 +196,15 @@ public:
UnMask(); UnMask();
} }
protected:
// return the size needed by the buffer: this depends on whether we're
// buffering just the currently shown part or the total (scrolled) window
static wxSize GetBufferedSize(wxWindow *window, int style)
{
return style & wxBUFFER_VIRTUAL_AREA ? window->GetVirtualSize()
: window->GetClientSize();
}
private: private:
wxPaintDC m_paintdc; wxPaintDC m_paintdc;