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#ifndef INCLUDED_SDEXT_SOURCE_PRESENTER_PRESENTERSLIDEPREVIEW_HXX
#define INCLUDED_SDEXT_SOURCE_PRESENTER_PRESENTERSLIDEPREVIEW_HXX

#include "PresenterController.hxx"

#include <com/sun/star/awt/XPaintListener.hpp>
#include <com/sun/star/awt/XWindowListener.hpp>
#include <com/sun/star/drawing/XDrawPage.hpp>
#include <com/sun/star/drawing/XDrawView.hpp>
#include <com/sun/star/drawing/XSlideRenderer.hpp>
#include <com/sun/star/drawing/framework/XPane.hpp>
#include <com/sun/star/drawing/framework/XView.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <cppuhelper/basemutex.hxx>
#include <cppuhelper/compbase.hxx>
#include <rtl/ref.hxx>

namespace sdext { namespace presenter {

typedef ::cppu::WeakComponentImplHelper <
    css::drawing::framework::XView,
    css::drawing::XDrawView,
    css::awt::XPaintListener,
    css::awt::XWindowListener
> PresenterSlidePreviewInterfaceBase;

/** Static preview of a slide.  Typically used for the preview of the next
    slide.
    This implementation shows a preview of the slide given to the
    setCurrentSlide.  For showing the next slide the PresenterViewFactory
    uses a derived class that overrides the setCurrentSlide() method.
*/
class PresenterSlidePreview
    : private ::cppu::BaseMutex,
      public PresenterSlidePreviewInterfaceBase
{
public:
    PresenterSlidePreview (
        const css::uno::Reference<css::uno::XComponentContext>& rxContext,
        const css::uno::Reference<css::drawing::framework::XResourceId>& rxViewId,
        const css::uno::Reference<css::drawing::framework::XPane>& rxAnchorPane,
        const ::rtl::Reference<PresenterController>& rpPresenterController);
    virtual ~PresenterSlidePreview() override;
    PresenterSlidePreview(const PresenterSlidePreview&) = delete;
    PresenterSlidePreview& operator=(const PresenterSlidePreview&) = delete;
    virtual void SAL_CALL disposing() override;

    // XResourceId

    virtual css::uno::Reference<css::drawing::framework::XResourceId> SAL_CALL getResourceId() override;

    virtual sal_Bool SAL_CALL isAnchorOnly() override;

    // XWindowListener

    virtual void SAL_CALL windowResized (const css::awt::WindowEvent& rEvent) override;

    virtual void SAL_CALL windowMoved (const css::awt::WindowEvent& rEvent) override;

    virtual void SAL_CALL windowShown (const css::lang::EventObject& rEvent) override;

    virtual void SAL_CALL windowHidden (const css::lang::EventObject& rEvent) override;

    // XPaintListener

    virtual void SAL_CALL windowPaint (const css::awt::PaintEvent& rEvent) override;

    // lang::XEventListener
    virtual void SAL_CALL disposing (const css::lang::EventObject& rEvent) override;

    // XDrawView

    virtual void SAL_CALL setCurrentPage (
        const css::uno::Reference<css::drawing::XDrawPage>& rxSlide) override;

    virtual css::uno::Reference<css::drawing::XDrawPage> SAL_CALL getCurrentPage() override;

protected:
    ::rtl::Reference<PresenterController> mpPresenterController;

private:
    css::uno::Reference<css::drawing::framework::XResourceId> mxViewId;
    css::uno::Reference<css::drawing::XSlideRenderer> mxPreviewRenderer;

    /** This Image holds the preview of the current slide.  After resize
        requests the image may be empty.  This results eventually in a call
        to ProvideSlide() in order to created a preview in the correct new
        size.
    */
    css::uno::Reference<css::rendering::XBitmap> mxPreview;
    std::shared_ptr<PresenterBitmapContainer> mpBitmaps;

    /**  The current slide for which a preview is displayed.  This may or
        may not be the same as the current slide of the PresenterView.
    */
    css::uno::Reference<css::drawing::XDrawPage> mxCurrentSlide;
    double mnSlideAspectRatio;

    css::uno::Reference<css::awt::XWindow> mxWindow;
    css::uno::Reference<css::rendering::XCanvas> mxCanvas;

    /** Set the given slide as the current slide of the called PresenterSlidePreview
        object.
    */
    void SetSlide (const css::uno::Reference<css::drawing::XDrawPage>& rxPage);

    /** Paint the preview of the current slide centered in the window of the
        anchor pane.
    */
    void Paint (const css::awt::Rectangle& rBoundingBox);

    /** React to a resize of the anchor pane.
    */
    void Resize();

    /** @throws css::lang::DisposedException when the object has already been
        disposed.
    */
    void ThrowIfDisposed();
};

} } // end of namespace ::sd::presenter

#endif

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