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123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
3 weeks ago
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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#ifndef QWT_PLOT_LAYOUT_H
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#define QWT_PLOT_LAYOUT_H
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#include "qwt_global.h"
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#include "qwt_plot.h"
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/*!
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\brief Layout engine for QwtPlot.
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It is used by the QwtPlot widget to organize its internal widgets
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or by QwtPlot::print() to render its content to a QPaintDevice like
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a QPrinter, QPixmap/QImage or QSvgRenderer.
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\sa QwtPlot::setPlotLayout()
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*/
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class QWT_EXPORT QwtPlotLayout
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{
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public:
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/*!
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Options to configure the plot layout engine
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\sa activate(), QwtPlotRenderer
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*/
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enum Option
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{
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//! Unused
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AlignScales = 0x01,
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/*!
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Ignore the dimension of the scrollbars. There are no
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scrollbars, when the plot is not rendered to widgets.
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*/
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IgnoreScrollbars = 0x02,
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//! Ignore all frames.
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IgnoreFrames = 0x04,
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//! Ignore the legend.
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IgnoreLegend = 0x08,
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//! Ignore the title.
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IgnoreTitle = 0x10,
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//! Ignore the footer.
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IgnoreFooter = 0x20
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};
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//! Layout options
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typedef QFlags<Option> Options;
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explicit QwtPlotLayout();
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virtual ~QwtPlotLayout();
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void setCanvasMargin( int margin, int axis = -1 );
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int canvasMargin( int axisId ) const;
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void setAlignCanvasToScales( bool );
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void setAlignCanvasToScale( int axisId, bool );
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bool alignCanvasToScale( int axisId ) const;
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void setSpacing( int );
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int spacing() const;
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void setLegendPosition( QwtPlot::LegendPosition pos, double ratio );
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void setLegendPosition( QwtPlot::LegendPosition pos );
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QwtPlot::LegendPosition legendPosition() const;
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void setLegendRatio( double ratio );
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double legendRatio() const;
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virtual QSize minimumSizeHint( const QwtPlot * ) const;
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virtual void activate( const QwtPlot *,
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const QRectF &plotRect, Options options = Options() );
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virtual void invalidate();
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QRectF titleRect() const;
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QRectF footerRect() const;
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QRectF legendRect() const;
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QRectF scaleRect( int axis ) const;
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QRectF canvasRect() const;
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class LayoutData;
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protected:
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void setTitleRect( const QRectF & );
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void setFooterRect( const QRectF & );
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void setLegendRect( const QRectF & );
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void setScaleRect( int axis, const QRectF & );
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void setCanvasRect( const QRectF & );
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QRectF layoutLegend( Options options, const QRectF & ) const;
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QRectF alignLegend( const QRectF &canvasRect,
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const QRectF &legendRect ) const;
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void expandLineBreaks( Options options, const QRectF &rect,
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int &dimTitle, int &dimFooter, int dimAxes[QwtPlot::axisCnt] ) const;
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void alignScales( Options options, QRectF &canvasRect,
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QRectF scaleRect[QwtPlot::axisCnt] ) const;
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private:
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class PrivateData;
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PrivateData *d_data;
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotLayout::Options )
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#endif
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