ground/gcs/src/libs/qwt/src/qwt_scale_widget.h

   1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
   2  * Qwt Widget Library
   3  * Copyright (C) 1997   Josef Wilgen
   4  * Copyright (C) 2002   Uwe Rathmann
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the Qwt License, Version 1.0
   8  *****************************************************************************/
   9
  10 #ifndef QWT_SCALE_WIDGET_H
  11 #define QWT_SCALE_WIDGET_H
  12
  13 #include "qwt_global.h"
  14 #include "qwt_text.h"
  15 #include "qwt_scale_draw.h"
  16 #include <qwidget.h>
  17 #include <qfont.h>
  18 #include <qcolor.h>
  19 #include <qstring.h>
  20
  21 class QPainter;
  22 class QwtTransform;
  23 class QwtScaleDiv;
  24 class QwtColorMap;
  25
  26 /*!
  27   \brief A Widget which contains a scale
  28
  29   This Widget can be used to decorate composite widgets with
  30   a scale.
  31 */
  32
  33 class QWT_EXPORT QwtScaleWidget : public QWidget
  34 {
  35     Q_OBJECT
  36
  37 public:
  38     //! Layout flags of the title
  39     enum LayoutFlag
  40     {
  41         /*!
  42           The title of vertical scales is painted from top to bottom.
  43           Otherwise it is painted from bottom to top.
  44          */
  45         TitleInverted = 1
  46     };
  47
  48     //! Layout flags of the title
  49     typedef QFlags<LayoutFlag> LayoutFlags;
  50
  51     explicit QwtScaleWidget( QWidget *parent = NULL );
  52     explicit QwtScaleWidget( QwtScaleDraw::Alignment, QWidget *parent = NULL );
  53     virtual ~QwtScaleWidget();
  54
  55 Q_SIGNALS:
  56     //! Signal emitted, whenever the scale division changes
  57     void scaleDivChanged();
  58
  59 public:
  60     void setTitle( const QString &title );
  61     void setTitle( const QwtText &title );
  62     QwtText title() const;
  63
  64     void setLayoutFlag( LayoutFlag, bool on );
  65     bool testLayoutFlag( LayoutFlag ) const;
  66
  67     void setBorderDist( int start, int end );
  68     int startBorderDist() const;
  69     int endBorderDist() const;
  70
  71     void getBorderDistHint( int &start, int &end ) const;
  72
  73     void getMinBorderDist( int &start, int &end ) const;
  74     void setMinBorderDist( int start, int end );
  75
  76     void setMargin( int );
  77     int margin() const;
  78
  79     void setSpacing( int td );
  80     int spacing() const;
  81
  82     void setScaleDiv( const QwtScaleDiv &sd );
  83     void setTransformation( QwtTransform * );
  84
  85     void setScaleDraw( QwtScaleDraw * );
  86     const QwtScaleDraw *scaleDraw() const;
  87     QwtScaleDraw *scaleDraw();
  88
  89     void setLabelAlignment( Qt::Alignment );
  90     void setLabelRotation( double rotation );
  91
  92     void setColorBarEnabled( bool );
  93     bool isColorBarEnabled() const;
  94
  95     void setColorBarWidth( int );
  96     int colorBarWidth() const;
  97
  98     void setColorMap( const QwtInterval &, QwtColorMap * );
  99
 100     QwtInterval colorBarInterval() const;
 101     const QwtColorMap *colorMap() const;
 102
 103     virtual QSize sizeHint() const;
 104     virtual QSize minimumSizeHint() const;
 105
 106     int titleHeightForWidth( int width ) const;
 107     int dimForLength( int length, const QFont &scaleFont ) const;
 108
 109     void drawColorBar( QPainter *painter, const QRectF & ) const;
 110     void drawTitle( QPainter *painter, QwtScaleDraw::Alignment,
 111         const QRectF &rect ) const;
 112
 113     void setAlignment( QwtScaleDraw::Alignment );
 114     QwtScaleDraw::Alignment alignment() const;
 115
 116     QRectF colorBarRect( const QRectF& ) const;
 117
 118 protected:
 119     virtual void paintEvent( QPaintEvent * );
 120     virtual void resizeEvent( QResizeEvent * );
 121
 122     void draw( QPainter *p ) const;
 123
 124     void scaleChange();
 125     void layoutScale( bool update = true );
 126
 127 private:
 128     void initScale( QwtScaleDraw::Alignment );
 129
 130     class PrivateData;
 131     PrivateData *d_data;
 132 };
 133
 134 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtScaleWidget::LayoutFlags )
 135
 136 #endif