Quelle  ScopedStates.hxx

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#ifndef INCLUDED_VCL_SCOPEDSTATES_HXX
#define INCLUDED_VCL_SCOPEDSTATES_HXX

#include <vcl/outdev.hxx>

namespace vcl
{
class ScopedAntialiasing
{
private:
    OutputDevice& m_rOutputDevice;
    AntialiasingFlags m_nPreviousAAState;

public:
    ScopedAntialiasing(OutputDevice& rOutputDevice, bool bAAState)
        : m_rOutputDevice(rOutputDevice)
        , m_nPreviousAAState(m_rOutputDevice.GetAntialiasing())
    {
        if (bAAState)
            rOutputDevice.SetAntialiasing(m_nPreviousAAState | AntialiasingFlags::Enable);
        else
            rOutputDevice.SetAntialiasing(m_nPreviousAAState & ~AntialiasingFlags::Enable);
    }

    ~ScopedAntialiasing() { m_rOutputDevice.SetAntialiasing(m_nPreviousAAState); }
};
}

#endif // INCLUDED_VCL_SCOPEDSTATES_HXX

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