93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
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/******************************************************************************
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* QSkinny - Copyright (C) 2016 Uwe Rathmann
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* This file may be used under the terms of the QSkinny License, Version 1.0
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*****************************************************************************/
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#ifndef QSK_BOX_METRICS_H
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#define QSK_BOX_METRICS_H
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#include <qrect.h>
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#include <qnamespace.h>
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class QskBoxShapeMetrics;
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class QskBoxBorderMetrics;
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class QskBoxMetrics
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{
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public:
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QskBoxMetrics( const QRectF&,
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const QskBoxShapeMetrics&, const QskBoxBorderMetrics& );
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const QRectF outerRect;
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QRectF innerRect;
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int outerStepCount() const;
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int innerStepCount() const;
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struct Corner
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{
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inline qreal xInner( qreal cos ) const
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{ return centerInnerX + sx * cos * radiusInnerX; }
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inline qreal yInner( qreal sin ) const
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{ return centerInnerY + sy * sin * radiusInnerY; }
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inline qreal xOuter( qreal cos ) const
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{ return centerX + sx * ( cos * radiusX ); }
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inline qreal yOuter( qreal sin ) const
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{ return centerY + sy * ( sin * radiusY ); }
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inline int innerStepCount() const
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{ return ( centerInnerX == 0.0 ) ? 1 : stepCount; }
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qreal centerX, centerY;
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qreal radiusX, radiusY;
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qreal centerInnerX, centerInnerY;
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qreal radiusInnerX, radiusInnerY;
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qreal sx, sy;
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int stepCount = 0;
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} corners[ 4 ];
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bool hasBorder = false;
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// the same border width on all sides
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bool isBorderRegular = false;
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// true for plain rectangles
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bool isOutsideRounded = false;
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/*
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outer radii are symmetric in both directions ( rectellipse )
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However the inner radii might differ when isBorderRegular is false
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*/
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bool isOutsideSymmetric = false;
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/*
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When the border width exceed the inner radius the corner
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becomes rectangular at the inside. When this happens to
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all corners the inner part dgenerates to a rectangle and
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can be filled with a simpler algo.
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*/
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bool isInsideRounded = false;
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/*
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stepSymmetries indicates the directions, where we can
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iterate with the the same steps along opposing corners.
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This is possible, when both corners have the same radius
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or one of them has a radius of 0.
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*/
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Qt::Orientations stepSymmetries;
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/*
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In case stepSymmetries indicates both directions the direction
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that needs less steps is preferred.
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*/
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Qt::Orientation preferredOrientation;
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};
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#endif
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