windowoutdevholder.hxx

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#pragma once
 
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/awt/XWindow.hpp>
#include <vcl/window.hxx>
 
#include "outdevprovider.hxx"
 
namespace vclcanvas
{
    class WindowOutDevHolder : public OutDevProvider
    {
    public:
        WindowOutDevHolder(const WindowOutDevHolder&) = delete;
        const WindowOutDevHolder operator=(const WindowOutDevHolder&) = delete;
 
        explicit WindowOutDevHolder( const css::uno::Reference< css::awt::XWindow>& xWin );
 
    private:
        virtual OutputDevice&       getOutDev() override { return *mrOutputWindow.GetOutDev(); }
        virtual const OutputDevice& getOutDev() const override { return *mrOutputWindow.GetOutDev(); }
 
        // TODO(Q2): Lifetime issue. Though WindowGraphicDeviceBase
        // now listens to the window component, I still consider
        // holding a naked reference unsafe here (especially as we
        // pass it around via getOutDev). This _only_ works reliably,
        // if disposing the SpriteCanvas correctly disposes all
        // entities which hold this pointer.
        // So: as soon as the protocol inside
        // vcl/source/window/window.cxx is broken, that disposes the
        // canvas during window deletion, we're riding a dead horse
        // here
        vcl::Window& mrOutputWindow;
    };
}
 
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