/******************************************************************************
 * QSkinny - Copyright (C) 2016 Uwe Rathmann
 *           SPDX-License-Identifier: BSD-3-Clause
 *****************************************************************************/

#include "SkinFactory.h"

#include <QskBoxBorderColors.h>
#include <QskGradient.h>
#include <QskGradientStop.h>
#include <QskPlatform.h>
#include <QskRgbValue.h>
#include <QskSkin.h>
#include <QskSkinHintTableEditor.h>
#include <QskTextLabel.h>

#include <QskLevelingSensor.h>
#include <QskLevelingSensorSkinlet.h>

#include <QskSlider.h>
#include <QskSliderSkinlet.h>

#include <QskTextLabel.h>
#include <QskTextLabelSkinlet.h>

namespace
{
    class Skin : public QskSkin
    {
        template< typename T >
        void style( QskSkinHintTableEditor& editor );

        template< typename Skinnable, typename Skinlet >
        void declareSkinlet()
        {
            QskSkin::declareSkinlet< Skinnable, Skinlet >();
        }

        template< typename Skinnable, typename Skinlet >
        void declareSkinlet( QskSkinHintTableEditor& editor )
        {
            QskSkin::declareSkinlet< Skinnable, Skinlet >();
            style< Skinnable >( editor );
        }

      public:
        Skin()
        {
            QskSkinHintTableEditor editor( &hintTable() );
            declareSkinlet< QskSlider, QskSliderSkinlet >( editor );
            declareSkinlet< QskTextLabel, QskTextLabelSkinlet >();
            declareSkinlet< QskLevelingSensor, QskLevelingSensorSkinlet >( editor );
        }
    };

    template<>
    void Skin::style< QskSlider >( QskSkinHintTableEditor& editor )
    {
        using A = QskAspect;
        using Q = QskSlider;

        const qreal extent = 40;

        // Panel

        for ( auto variation : { A::Horizontal, A::Vertical } )
        {
            const auto aspect = Q::Panel | variation;

            editor.setMetric( aspect | A::Size, extent );
            editor.setBoxBorderMetrics( aspect, 0 );
            editor.setBoxShape( aspect, 0 );
            editor.setGradient( aspect, QskGradient() );
        }

        // Groove, Fill

        for ( auto variation : { A::Horizontal, A::Vertical } )
        {
            for ( auto subControl : { Q::Groove, Q::Fill } )
            {
                const auto aspect = subControl | variation;

                editor.setMetric( aspect | A::Size, 0.3 * extent );

                editor.setBoxBorderMetrics( aspect, 0 );
                editor.setBoxShape( aspect, 0.1 * extent );
            }

            editor.setGradient( Q::Groove | variation, Qt::lightGray );
            editor.setGradient( Q::Fill | variation, Qt::darkGray );
        }

        // Handle

        for ( auto variation : { A::Horizontal, A::Vertical } )
        {
            const auto aspect = Q::Handle | variation;
            editor.setColor( aspect, Qt::black );

            editor.setBoxShape( aspect, 20.0, Qt::RelativeSize );

            const qreal sz = 0.75 * extent;
            editor.setStrutSize( aspect, sz, sz );
        }
    }

    template<>
    void Skin::style< QskLevelingSensor >( QskSkinHintTableEditor& editor )
    {
        using Q = QskLevelingSensor;

        static constexpr auto r1 = 0.9;
        static constexpr auto r2 = 1.0;

        QskGradient gradient{ {
            { 0.5, Qt::lightGray },
            { 0.5, Qt::lightGray },
            { 0.5, Qt::darkGray },
            { 1.0, Qt::darkGray },
        } };
        gradient.setLinearDirection( Qt::Vertical );

        editor.setColor( Q::Background, "dimgray" );

        editor.setStrutSize( Q::OuterDisk, { r2, r2 } );
        editor.setColor( Q::OuterDisk, Qt::white );

        editor.setGradient( Q::Horizon, gradient );
        editor.setStrutSize( Q::Horizon, { r1, r1 } );

        editor.setColor( Q::TickmarksX, Qt::black );
        editor.setStrutSize( Q::TickmarksX, { r1, 0.2 } );             // w %, h %
        editor.setHint( Q::TickmarksX, QVector3D{ 0.50, 0.75, 1.0 } ); // %
        editor.setAlignment( Q::TickmarksX, Qt::AlignCenter );

        editor.setStrutSize( Q::TickmarksXLabels, { r1, 0.15 } ); // w %, h %
        editor.setAlignment( Q::TickmarksXLabels, Qt::AlignTop | Qt::AlignHCenter );

        editor.setColor( Q::TickmarksY, Qt::black );
        editor.setStrutSize( Q::TickmarksY, { 0.1, r1 } );              // w %, h %
        editor.setHint( Q::TickmarksY, QVector3D{ 0.50, 0.75, 1.00 } ); // %
        editor.setAlignment( Q::TickmarksY, Qt::AlignCenter );

        editor.setStrutSize( Q::TickmarksYLabels, { 0.15, r1 } ); // w %, h %
        editor.setAlignment( Q::TickmarksYLabels, Qt::AlignCenter );

        editor.setColor( Q::TickmarksZ, "silver" );
        editor.setStrutSize( Q::TickmarksZ, { 0.90, 0.95 } );
        editor.setHint( Q::TickmarksZ, QVector3D{ 0.50, 0.75, 1.00 } ); // %

        editor.setStrutSize( Q::TickmarksZLabels, { 0.9, 0.0 } ); // r1 %, r2 %
        editor.setAlignment( Q::TickmarksZLabels, Qt::AlignCenter );
    }
}

QStringList SkinFactory::skinNames() const
{
    return { "Skin" };
}

QskSkin* SkinFactory::createSkin( const QString& skinName )
{
    if ( skinName == "Skin" )
        return new Skin();

    return nullptr;
}

#include "moc_SkinFactory.cpp"