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Reverted wxBuffered[Paint]DC to nearly the pre 2.7.1 state, kept

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wxAutoBufferedPaintDC and added wxAutoBufferedPaintDCFactory.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41992 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
2006-10-13 19:14:21 +00:00
parent 99ceaa26e4
commit 19c9f36f13
4 changed files with 78 additions and 613 deletions
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103
src/common/dcbufcmn.cpp
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@@ -34,104 +34,7 @@
// implementation
// ============================================================================
// ============================================================================
// wxSharedDCBufferManager
// Helper class to free shared buffer when the app exists.
// ============================================================================
class wxSharedDCBufferManager
{
friend class wxBufferedDC;
public:
wxSharedDCBufferManager()
{
m_buffer = NULL;
}
~wxSharedDCBufferManager()
{
delete m_buffer;
}
wxBitmap* GetBuffer(wxWindow* win, const wxSize& area)
{
int width = area.x;
int height = area.y;
if ( width <= 0 )
win->GetClientSize(&width, &height);
if ( !m_buffer ||
width > m_buffer->GetWidth() ||
height > m_buffer->GetHeight() )
{
delete m_buffer;
// Create slightly larger bitmap so we don't need to
// be reallocating constantly when the user enlarges
// the frame for the first time.
m_buffer = new wxBitmap(width+20, height+20);
}
return m_buffer;
}
private:
wxBitmap* m_buffer;
};
static wxSharedDCBufferManager gs_sharedDCBufferManager;
// ============================================================================
// wxBufferedDC
// ============================================================================
// Blits the buffer to the dc, and detaches the dc from the buffer (so it
// can be effectively used once only).
//
// Usually called in the dtor or by the dtor of derived classes if the
// BufferedDC must blit before the derived class (which may own the dc it's
// blitting to) is destroyed.
void wxBufferedDC::UnMask()
{
if ( m_buffer )
{
wxDC* bufferDc = DetachDC();
wxASSERT( bufferDc->IsKindOf(CLASSINFO(wxMemoryDC)) );
if (m_mainDc)
{
wxCoord x=0, y=0;
if (m_style & wxBUFFER_CLIENT_AREA)
bufferDc->GetDeviceOrigin(&x, &y);
m_mainDc->Blit( 0, 0,
m_buffer->GetWidth(), m_buffer->GetHeight(), bufferDc,
-x, -y );
m_mainDc = NULL;
}
m_buffer = NULL;
delete bufferDc;
}
}
void wxBufferedDC::PrepareBuffer(wxWindow* win, const wxSize& area)
{
m_buffer = gs_sharedDCBufferManager.GetBuffer(win, area);
}
void wxBufferedDC::UseBuffer()
{
wxASSERT(m_buffer);
wxMemoryDC* memoryDc = m_mainDc ? new wxMemoryDC(m_mainDc): new wxMemoryDC();
memoryDc->SelectObject(*m_buffer);
AttachDC(memoryDc);
}
// This file is intentionally empty. It has not been removed in case another
// wxBufferedDC reimplementation is attempted in the near future. If not then
// this file can be removed and the bakefiles updated.