KDChartCartesianCoordinatePlane.h

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/****************************************************************************
** Copyright (C) 2001-2013 Klaralvdalens Datakonsult AB.  All rights reserved.
**
** This file is part of the KD Chart library.
**
** Licensees holding valid commercial KD Chart licenses may use this file in
** accordance with the KD Chart Commercial License Agreement provided with
** the Software.
**
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 and version 3 as published by the
** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** Contact info@kdab.com if any conditions of this licensing are not
** clear to you.
**
**********************************************************************/

#ifndef KDCHARTCARTESIANCOORDINATEPLANE_H
#define KDCHARTCARTESIANCOORDINATEPLANE_H

#include "KDChartAbstractCoordinatePlane.h"

namespace KDChart {

    class Chart;
    class PaintContext;
    class AbstractDiagram;
    class CartesianAxis;
    class CartesianGrid;

    class KDCHART_EXPORT CartesianCoordinatePlane : public AbstractCoordinatePlane
    {
        Q_OBJECT

        Q_DISABLE_COPY( CartesianCoordinatePlane )
        KDCHART_DECLARE_PRIVATE_DERIVED_PARENT( CartesianCoordinatePlane, Chart* )

    friend class CartesianAxis;
    friend class CartesianGrid;

    public:
        explicit CartesianCoordinatePlane ( Chart* parent = 0 );
        ~CartesianCoordinatePlane();

        void addDiagram ( AbstractDiagram* diagram );

        void setIsometricScaling ( bool onOff );

        bool doesIsometricScaling() const;

        const QPointF translate ( const QPointF& diagramPoint ) const;

        virtual qreal zoomFactorX() const;
        virtual qreal zoomFactorY() const;

        virtual void setZoomFactors( qreal factorX, qreal factorY );
        virtual void setZoomFactorX( qreal factor );
        virtual void setZoomFactorY( qreal factor );

        virtual QPointF zoomCenter() const;

        virtual void setZoomCenter( const QPointF& center );

        void setFixedDataCoordinateSpaceRelation( bool fixed );
        bool hasFixedDataCoordinateSpaceRelation() const;

        void setXAxisStartAtZero(bool fixedStart);
        bool xAxisStartAtZero() const;

        void setHorizontalRange( const QPair<qreal, qreal> & range );

        void setVerticalRange( const QPair<qreal, qreal> & range );

        QPair<qreal, qreal> horizontalRange() const;

        QPair<qreal, qreal> verticalRange() const;

        void setAutoAdjustHorizontalRangeToData( unsigned int percentEmpty = 67 );

        void setAutoAdjustVerticalRangeToData( unsigned int percentEmpty = 67 );

        unsigned int autoAdjustHorizontalRangeToData() const;

        unsigned int autoAdjustVerticalRangeToData() const;


        void setGridAttributes( Qt::Orientation orientation, const GridAttributes & );

        void resetGridAttributes( Qt::Orientation orientation );

        const GridAttributes gridAttributes( Qt::Orientation orientation ) const;

        bool hasOwnGridAttributes( Qt::Orientation orientation ) const;

        void setAutoAdjustGridToZoom( bool autoAdjust );

#if QT_VERSION < 0x040400 || defined(Q_COMPILER_MANGLES_RETURN_TYPE)
        const bool autoAdjustGridToZoom() const;
#else
        bool autoAdjustGridToZoom() const;
#endif

        AxesCalcMode axesCalcModeY() const;
        AxesCalcMode axesCalcModeX() const;

        void setAxesCalcModes( AxesCalcMode mode );
        void setAxesCalcModeY( AxesCalcMode mode );
        void setAxesCalcModeX( AxesCalcMode mode );

        virtual void paint( QPainter* );

        AbstractCoordinatePlane* sharedAxisMasterPlane( QPainter* p = 0 );

        QRectF visibleDataRange() const;

        QRectF logicalArea() const;

        QRectF diagramArea() const;

        QRectF visibleDiagramArea() const;

        void setHorizontalRangeReversed( bool reverse );

        bool isHorizontalRangeReversed() const;

        void setVerticalRangeReversed( bool reverse );

        bool isVerticalRangeReversed() const;

        void setGeometry( const QRect& r );

        // reimplemented
        Qt::Orientations expandingDirections() const;


    public Q_SLOTS:
        void adjustRangesToData();

        void adjustHorizontalRangeToData();

        void adjustVerticalRangeToData();

    protected:
        QRectF getRawDataBoundingRectFromDiagrams() const;
        QRectF adjustedToMaxEmptyInnerPercentage(
                const QRectF& r, unsigned int percentX, unsigned int percentY ) const;
        virtual QRectF calculateRawDataBoundingRect() const;
        virtual DataDimensionsList getDataDimensionsList() const;
        // the whole drawing area, includes diagrams and axes, but maybe smaller
        // than (width, height):
        virtual QRectF drawingArea() const;
    public:
        const QPointF translateBack( const QPointF& screenPoint ) const;
    protected:
        void paintEvent ( QPaintEvent* );
        void layoutDiagrams();
        // the following three return true if the new value is different from the old
        bool doneSetZoomFactorX( qreal factor );
        bool doneSetZoomFactorY( qreal factor );
        bool doneSetZoomCenter( const QPointF& center );

        void handleFixedDataCoordinateSpaceRelation( const QRectF& geometry );

        // reimplemented from QLayoutItem, via AbstractLayoutItem, AbstractArea, AbstractCoordinatePlane
        bool hasHeightForWidth() const;
        int heightForWidth( int w ) const;
        QSize sizeHint() const;

    protected Q_SLOTS:
        void slotLayoutChanged( AbstractDiagram* );

    private:
        void setHasOwnGridAttributes(
            Qt::Orientation orientation, bool on );
    };

}

#endif