KChartAbstractGrid.h

/*
 * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB.  All rights reserved.
 *
 * This file is part of the KD Chart library.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef KCHARTABSTRACTGRID_H
#define KCHARTABSTRACTGRID_H

#include <QPair>

#include "KChartAbstractCoordinatePlane.h"
#include "KChartGridAttributes.h"
#include "KChartAbstractDiagram.h"
#include "KChartCartesianAxis.h"

namespace KChart {

    class PaintContext;


    class AbstractGrid
    {
    public:
        virtual ~AbstractGrid();
    protected:
        AbstractGrid ();


    public:
        DataDimensionsList updateData( AbstractCoordinatePlane* plane );

        virtual void drawGrid( PaintContext* context ) = 0;

        void setNeedRecalculate();

        static bool isBoundariesValid(const QRectF& r );

        static bool isBoundariesValid(const QPair<QPointF,QPointF>& b );

        static bool isBoundariesValid(const DataDimensionsList& l );

        static bool isValueValid(const qreal& r );

        static void adjustLowerUpperRange(
                qreal& start, qreal& end,
                qreal stepWidth,
                bool adjustLower, bool adjustUpper );

        static const DataDimension adjustedLowerUpperRange(
                const DataDimension& dim,
                bool adjustLower, bool adjustUpper );

        GridAttributes gridAttributes;

    protected:
        DataDimensionsList mDataDimensions;
        AbstractCoordinatePlane* mPlane;

    private:
        virtual DataDimensionsList calculateGrid( const DataDimensionsList& rawDataDimensions ) const = 0;
        DataDimensionsList mCachedRawDataDimensions;
    };

}

#endif