| 1 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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| 2 | * Qwt Widget Library
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| 3 | * Copyright (C) 1997 Josef Wilgen
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| 4 | * Copyright (C) 2002 Uwe Rathmann
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the Qwt License, Version 1.0
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| 8 | *****************************************************************************/
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| 9 |
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| 10 | #ifndef QWT_PLOT_LAYOUT_H
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| 11 | #define QWT_PLOT_LAYOUT_H
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| 12 |
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| 13 | #include "qwt_global.h"
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| 14 | #include "qwt_plot.h"
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| 15 |
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| 16 | /*!
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| 17 | \brief Layout engine for QwtPlot.
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| 18 |
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| 19 | It is used by the QwtPlot widget to organize its internal widgets
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| 20 | or by QwtPlot::print() to render its content to a QPaintDevice like
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| 21 | a QPrinter, QPixmap/QImage or QSvgRenderer.
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| 22 | */
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| 23 |
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| 24 | class QWT_EXPORT QwtPlotLayout
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| 25 | {
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| 26 | public:
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| 27 | /*!
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| 28 | Options to configure the plot layout engine
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| 29 | \sa activate(), QwtPlotRenderer
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| 30 | */
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| 31 | enum Option
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| 32 | {
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| 33 | //! Unused
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| 34 | AlignScales = 0x01,
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| 35 |
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| 36 | /*!
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| 37 | Ignore the dimension of the scrollbars. There are no
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| 38 | scrollbars, when the plot is not rendered to widgets.
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| 39 | */
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| 40 | IgnoreScrollbars = 0x02,
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| 41 |
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| 42 | //! Ignore all frames.
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| 43 | IgnoreFrames = 0x04,
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| 44 |
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| 45 | //! Ignore the legend.
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| 46 | IgnoreLegend = 0x08
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| 47 | };
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| 48 |
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| 49 | //! Layout options
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| 50 | typedef QFlags<Option> Options;
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| 51 |
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| 52 | explicit QwtPlotLayout();
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| 53 | virtual ~QwtPlotLayout();
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| 54 |
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| 55 | void setCanvasMargin( int margin, int axis = -1 );
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| 56 | int canvasMargin( int axis ) const;
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| 57 |
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| 58 | void setAlignCanvasToScales( bool );
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| 59 | bool alignCanvasToScales() const;
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| 60 |
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| 61 | void setSpacing( int );
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| 62 | int spacing() const;
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| 63 |
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| 64 | void setLegendPosition( QwtPlot::LegendPosition pos, double ratio );
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| 65 | void setLegendPosition( QwtPlot::LegendPosition pos );
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| 66 | QwtPlot::LegendPosition legendPosition() const;
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| 67 |
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| 68 | void setLegendRatio( double ratio );
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| 69 | double legendRatio() const;
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| 70 |
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| 71 | virtual QSize minimumSizeHint( const QwtPlot * ) const;
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| 72 |
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| 73 | virtual void activate( const QwtPlot *,
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| 74 | const QRectF &rect, Options options = 0x00 );
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| 75 |
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| 76 | virtual void invalidate();
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| 77 |
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| 78 | const QRectF &titleRect() const;
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| 79 | const QRectF &legendRect() const;
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| 80 | const QRectF &scaleRect( int axis ) const;
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| 81 | const QRectF &canvasRect() const;
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| 82 |
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| 83 | class LayoutData;
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| 84 |
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| 85 | protected:
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| 86 |
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| 87 | QRectF layoutLegend( Options options, const QRectF & ) const;
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| 88 | QRectF alignLegend( const QRectF &canvasRect,
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| 89 | const QRectF &legendRect ) const;
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| 90 |
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| 91 | void expandLineBreaks( int options, const QRectF &rect,
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| 92 | int &dimTitle, int dimAxes[QwtPlot::axisCnt] ) const;
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| 93 |
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| 94 | void alignScales( int options, QRectF &canvasRect,
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| 95 | QRectF scaleRect[QwtPlot::axisCnt] ) const;
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| 96 |
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| 97 | private:
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| 98 | class PrivateData;
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| 99 |
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| 100 | PrivateData *d_data;
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| 101 | };
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| 102 |
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| 103 | Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotLayout::Options )
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| 104 |
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| 105 | #endif
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