/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
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 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
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#ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_WAITSYMBOL_HXX
#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_WAITSYMBOL_HXX

#include <com/sun/star/rendering/XBitmap.hpp>
#include <cppcanvas/customsprite.hxx>

#include <vieweventhandler.hxx>
#include <screenupdater.hxx>
#include <eventmultiplexer.hxx>
#include <unoview.hxx>

#include <memory>
#include <vector>

namespace slideshow {
namespace internal {

class EventMultiplexer;
typedef std::shared_ptr<class WaitSymbol> WaitSymbolSharedPtr;

/// On-screen 'hour glass' for when slideshow is unresponsive
class WaitSymbol : public ViewEventHandler
{
public:
    WaitSymbol(const WaitSymbol&) = delete;
    WaitSymbol& operator=(const WaitSymbol&) = delete;

    static WaitSymbolSharedPtr create( const css::uno::Reference<css::rendering::XBitmap>& xBitmap,
                                       ScreenUpdater&                               rScreenUpdater,
                                       EventMultiplexer&                            rEventMultiplexer,
                                       const UnoViewContainer&                      rViewContainer );

    /** Shows the wait symbol.
     */
    void show() { setVisible(true); }

    /** Hides the wait symbol.
     */
    void hide() { setVisible(false); }

private:
    WaitSymbol( const css::uno::Reference<css::rendering::XBitmap>& xBitmap,
                ScreenUpdater&                               rScreenUpdater,
                const UnoViewContainer&                      rViewContainer );

    // ViewEventHandler
    virtual void viewAdded( const UnoViewSharedPtr& rView ) override;
    virtual void viewRemoved( const UnoViewSharedPtr& rView ) override;
    virtual void viewChanged( const UnoViewSharedPtr& rView ) override;
    virtual void viewsChanged() override;

    void setVisible( const bool bVisible );
    ::basegfx::B2DPoint calcSpritePos( UnoViewSharedPtr const & rView ) const;

    typedef ::std::vector<
        ::std::pair<UnoViewSharedPtr,
                    cppcanvas::CustomSpriteSharedPtr> > ViewsVecT;

    css::uno::Reference<css::rendering::XBitmap>  mxBitmap;

    ViewsVecT                                  maViews;
    ScreenUpdater&                             mrScreenUpdater;
    bool                                       mbVisible;
};

} // namespace internal
} // namespace presentation

#endif

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