/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * 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

 *   with this work for additional information regarding copyright

 *   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

 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .

 */

#pragma once

#include <vcl/ctrl.hxx>

class Slider final : public Control

{

private:

    tools::Rectangle       maChannel1Rect;

    tools::Rectangle       maChannel2Rect;

    tools::Rectangle       maThumbRect;

    tools::Long            mnStartPos;

    tools::Long            mnMouseOff;

    tools::Long            mnThumbPixOffset;

    tools::Long            mnThumbPixRange;

    tools::Long            mnThumbPixPos;

    tools::Long            mnThumbSize;

    tools::Long            mnChannelPixRange;

    tools::Long            mnChannelPixTop;

    tools::Long            mnChannelPixBottom;

    tools::Long            mnMinRange;

    tools::Long            mnMaxRange;

    tools::Long            mnThumbPos;

    tools::Long            mnLineSize;

    tools::Long            mnPageSize;

    sal_uInt16      mnStateFlags;

    ScrollType      meScrollType;

    bool            mbCalcSize;

    Link<Slider*,void>   maSlideHdl;

    using Control::ImplInitSettings;

    using Window::ImplInit;

    void ImplInitSettings();

    void ImplUpdateRects( bool bUpdate = true );

    tools::Long ImplCalcThumbPos( tools::Long nPixPos ) const;

    tools::Long ImplCalcThumbPosPix( tools::Long nPos ) const;

    void ImplCalc( bool bUpdate = true );

    void ImplDraw(vcl::RenderContext& rRenderContext);

    bool ImplIsPageUp( const Point& rPos ) const;

    bool ImplIsPageDown( const Point& rPos ) const;

    tools::Long ImplSlide( tools::Long nNewPos );

    tools::Long ImplDoAction( );

    void ImplDoMouseAction( const Point& rPos, bool bCallAction );

    void ImplDoSlide( tools::Long nNewPos );

    void ImplDoSlideAction( ScrollType eScrollType );

public:

                    Slider( vcl::Window* pParent, WinBits nStyle);

    virtual         ~Slider() override;

    virtual void    MouseButtonDown( const MouseEvent& rMEvt ) override;

    virtual void    MouseButtonUp( const MouseEvent& rMEvt ) override;

    virtual void    Tracking( const TrackingEvent& rTEvt ) override;

    virtual void    KeyInput( const KeyEvent& rKEvt ) override;

    virtual void    Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) override;

    virtual void    Resize() override;

    virtual void    StateChanged( StateChangedType nType ) override;

    virtual void    DataChanged( const DataChangedEvent& rDCEvt ) override;

    void            Slide();

    void            SetRangeMin(tools::Long nNewRange);

    tools::Long            GetRangeMin() const { return mnMinRange; }

    void            SetRangeMax(tools::Long nNewRange);

    tools::Long            GetRangeMax() const { return mnMaxRange; }

    void            SetRange( const Range& rRange );

    void            SetThumbPos( tools::Long nThumbPos );

    tools::Long            GetThumbPos() const { return mnThumbPos; }

    void            SetLineSize( tools::Long nNewSize ) { mnLineSize = nNewSize; }

    tools::Long            GetLineSize() const { return mnLineSize; }

    void            SetPageSize( tools::Long nNewSize ) { mnPageSize = nNewSize; }

    tools::Long            GetPageSize() const { return mnPageSize; }

    Size            CalcWindowSizePixel() const;

    void            SetSlideHdl( const Link<Slider*,void>& rLink ) { maSlideHdl = rLink; }

};

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