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 |
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30 | - AlignScales\n
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31 | Unused
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32 | - IgnoreScrollbars\n
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33 | Ignore the dimension of the scrollbars. There are no
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34 | scrollbars, when the plot is rendered to a paint device
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35 | (QwtPlot::print() ).
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36 | - IgnoreFrames\n
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37 | Ignore all frames. QwtPlot::print() doesn't paint them.
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38 | - IgnoreMargin\n
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39 | Ignore the margin().
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40 | - IgnoreLegend\n
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41 | Ignore the legend.
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42 |
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43 | \sa activate()
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44 | */
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45 | enum Options
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46 | {
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47 | AlignScales = 1,
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48 | IgnoreScrollbars = 2,
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49 | IgnoreFrames = 4,
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50 | IgnoreMargin = 8,
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51 | IgnoreLegend = 16
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52 | };
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53 |
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54 | explicit QwtPlotLayout();
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55 | virtual ~QwtPlotLayout();
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56 |
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57 | void setMargin(int);
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58 | int margin() const;
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59 |
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60 | void setCanvasMargin(int margin, int axis = -1);
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61 | int canvasMargin(int axis) const;
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62 |
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63 | void setAlignCanvasToScales(bool);
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64 | bool alignCanvasToScales() const;
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65 |
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66 | void setSpacing(int);
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67 | int spacing() const;
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68 |
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69 | void setLegendPosition(QwtPlot::LegendPosition pos, double ratio);
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70 | void setLegendPosition(QwtPlot::LegendPosition pos);
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71 | QwtPlot::LegendPosition legendPosition() const;
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72 |
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73 | void setLegendRatio(double ratio);
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74 | double legendRatio() const;
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75 |
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76 | virtual QSize minimumSizeHint(const QwtPlot *) const;
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77 |
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78 | virtual void activate(const QwtPlot *,
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79 | const QRect &rect, int options = 0);
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80 |
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81 | virtual void invalidate();
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82 |
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83 | const QRect &titleRect() const;
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84 | const QRect &legendRect() const;
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85 | const QRect &scaleRect(int axis) const;
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86 | const QRect &canvasRect() const;
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87 |
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88 | class LayoutData;
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89 |
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90 | protected:
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91 |
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92 | QRect layoutLegend(int options, const QRect &) const;
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93 | QRect alignLegend(const QRect &canvasRect,
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94 | const QRect &legendRect) const;
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95 |
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96 | void expandLineBreaks(int options, const QRect &rect,
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97 | int &dimTitle, int dimAxes[QwtPlot::axisCnt]) const;
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98 |
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99 | void alignScales(int options, QRect &canvasRect,
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100 | QRect scaleRect[QwtPlot::axisCnt]) const;
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101 |
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102 | private:
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103 | class PrivateData;
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104 |
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105 | PrivateData *d_data;
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106 | };
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107 |
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108 | #endif
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