121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
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/****************************************************************************
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** Copyright (C) 2001-2011 Klaralvdalens Datakonsult AB. All rights reserved.
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**
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** This file is part of the KD Chart library.
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**
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** Licensees holding valid commercial KD Chart licenses may use this file in
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** accordance with the KD Chart Commercial License Agreement provided with
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** the Software.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 and version 3 as published by the
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** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** Contact info@kdab.com if any conditions of this licensing are not
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** clear to you.
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**
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**********************************************************************/
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#include "KDChartAbstractGrid.h"
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#include "KDChartPaintContext.h"
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#include <qglobal.h>
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#include <KDABLibFakes>
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using namespace KDChart;
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using namespace std;
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static qreal _trunc( qreal v )
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{
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return (( v > 0.0 ) ? floor( v ) : ceil( v ));
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}
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AbstractGrid::AbstractGrid ()
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: mPlane( 0 )
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{
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//this bloc left empty intentionally
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}
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AbstractGrid::~AbstractGrid()
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{
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//this bloc left empty intentionally
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}
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void AbstractGrid::setNeedRecalculate()
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{
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mCachedRawDataDimensions.clear();
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}
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DataDimensionsList AbstractGrid::updateData( AbstractCoordinatePlane* plane )
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{
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if( plane ){
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const DataDimensionsList rawDataDimensions( plane->getDataDimensionsList() );
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if( mCachedRawDataDimensions.empty() || (rawDataDimensions != mCachedRawDataDimensions) ){
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mCachedRawDataDimensions = rawDataDimensions;
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mPlane = plane;
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mData = calculateGrid( rawDataDimensions );
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//qDebug("AbstractGrid::updateData() returns mData.first().start: %f mData.first().end: %f mData.first().stepWidth: %f", mData.first().start, mData.first().end, mData.first().stepWidth);
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}
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}
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return mData;
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}
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bool AbstractGrid::isBoundariesValid(const QRectF& r )
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{
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return isBoundariesValid(
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QPair<QPointF,QPointF>(r.topLeft(), r.bottomRight()) );
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}
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bool AbstractGrid::isBoundariesValid(const QPair<QPointF,QPointF>& b )
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{
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return isValueValid( b.first.x() ) && isValueValid( b.first.y() ) &&
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isValueValid( b.second.x() ) && isValueValid( b.second.y() );
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}
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bool AbstractGrid::isBoundariesValid(const DataDimensionsList& l )
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{
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for (int i = 0; i < l.size(); ++i)
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if ( ! isValueValid( l.at(i).start ) || ! isValueValid( l.at(i).end ) )
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return false;
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return true;
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}
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bool AbstractGrid::isValueValid(const qreal& r )
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{
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return !(ISNAN(r) || ISINF(r));
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}
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void AbstractGrid::adjustLowerUpperRange(
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qreal& start, qreal& end,
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qreal stepWidth,
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bool adjustLower, bool adjustUpper )
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{
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const qreal startAdjust = ( start >= 0.0 ) ? 0.0 : -1.0;
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const qreal endAdjust = ( end >= 0.0 ) ? 1.0 : 0.0;
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if ( adjustLower && (fmod( start, stepWidth ) != 0.0) )
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start = stepWidth * (_trunc( start / stepWidth ) + startAdjust);
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if ( adjustUpper && (fmod( end, stepWidth ) != 0.0) )
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end = stepWidth * (_trunc( end / stepWidth ) + endAdjust);
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}
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const DataDimension AbstractGrid::adjustedLowerUpperRange(
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const DataDimension& dim,
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bool adjustLower, bool adjustUpper )
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{
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DataDimension result( dim );
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adjustLowerUpperRange(
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result.start, result.end,
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result.stepWidth,
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adjustLower, adjustUpper );
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return result;
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}
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