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NAME

       QwtScaleWidget -

SYNOPSIS

       #include <qwt_scale_widget.h>

   Signals
       void scaleDivChanged ()

   Public Member Functions
       QwtScaleWidget (QWidget *parent=NULL)
       QwtScaleWidget (QwtScaleDraw::Alignment, QWidget *parent=NULL)
       virtual ~QwtScaleWidget ()
       QwtScaleDraw::Alignment alignment () const
       QwtDoubleInterval colorBarInterval () const
       QRect colorBarRect (const QRect &) const
       int colorBarWidth () const
       const QwtColorMap & colorMap () const
       int dimForLength (int length, const QFont &scaleFont) const
       void drawColorBar (QPainter *painter, const QRect &rect) const
       void drawTitle (QPainter *painter, QwtScaleDraw::Alignment, const QRect &rect) const
       int endBorderDist () const
       void getBorderDistHint (int &start, int &end) const
       void getMinBorderDist (int &start, int &end) const
       bool isColorBarEnabled () const
       int margin () const
       virtual QSize minimumSizeHint () const
       int penWidth () const
       const QwtScaleDraw * scaleDraw () const
       QwtScaleDraw * scaleDraw ()
       void setAlignment (QwtScaleDraw::Alignment)
       void setBorderDist (int start, int end)
       void setColorBarEnabled (bool)
       void setColorBarWidth (int)
       void setColorMap (const QwtDoubleInterval &, const QwtColorMap &)
       void setLabelAlignment (Qt::Alignment)
       void setLabelRotation (double rotation)
       void setMargin (int)
       void setMinBorderDist (int start, int end)
       void setPenWidth (int)
       void setScaleDiv (QwtScaleTransformation *, const QwtScaleDiv &sd)
       void setScaleDraw (QwtScaleDraw *)
       void setSpacing (int td)
       void setTitle (const QString &title)
       void setTitle (const QwtText &title)
       virtual QSize sizeHint () const
       int spacing () const
       int startBorderDist () const
       QwtText title () const
       int titleHeightForWidth (int width) const

   Protected Member Functions
       void draw (QPainter *p) const
       void layoutScale (bool update=true)
       virtual void paintEvent (QPaintEvent *e)
       virtual void resizeEvent (QResizeEvent *e)
       void scaleChange ()

Detailed Description

       A Widget which contains a scale.

       This Widget can be used to decorate composite widgets with a scale.

Constructor & Destructor Documentation

   QwtScaleWidget::QwtScaleWidget (QWidget *parent = NULL) [explicit]
       Create a scale with the position QwtScaleWidget::Left. Parameters:
           parent Parent widget

   QwtScaleWidget::QwtScaleWidget (QwtScaleDraw::Alignmentalign, QWidget *parent = NULL)
       [explicit]
       Constructor. Parameters:
           align Alignment.
           parent Parent widget

Member Function Documentation

   QwtScaleDraw::Alignment QwtScaleWidget::alignment () const
       Returns:
           position

       See also:
           setPosition()

   int QwtScaleWidget::dimForLength (intlength, const QFont &scaleFont) const
       Find the minimum dimension for a given length. dim is the height, length the width seen in
       direction of the title. Parameters:
           length width for horizontal, height for vertical scales
           scaleFont Font of the scale

       Returns:
           height for horizontal, width for vertical scales

   void QwtScaleWidget::drawTitle (QPainter *painter, QwtScaleDraw::Alignmentalign, const QRect
       &rect) const
       Rotate and paint a title according to its position into a given rectangle.

       Parameters:
           painter Painter
           align Alignment
           rect Bounding rectangle

   int QwtScaleWidget::endBorderDist () const
       Returns:
           end border distance

       See also:
           setBorderDist()

   void QwtScaleWidget::getBorderDistHint (int &start, int &end) const
       Calculate a hint for the border distances. This member function calculates the distance of
       the scale's endpoints from the widget borders which is required for the mark labels to fit
       into the widget. The maximum of this distance an the minimum border distance is returned.

       Warning:
           ยท The minimum border distance depends on the font.
       See also:
           setMinBorderDist(), getMinBorderDist(), setBorderDist()
   void QwtScaleWidget::getMinBorderDist (int &start, int &end) const
       Get the minimum value for the distances of the scale's endpoints from the widget borders.
       See also:
           setMinBorderDist(), getBorderDistHint()
   int QwtScaleWidget::margin () const
       Returns:
           margin
       See also:
           setMargin()
   QSize QwtScaleWidget::minimumSizeHint () const [virtual]
       Returns:
           a minimum size hint
   int QwtScaleWidget::penWidth () const
       Returns:
           Scale pen width
       See also:
           setPenWidth()
   void QwtScaleWidget::scaleChange () [protected]
       Notify a change of the scale. This virtual function can be overloaded by derived classes.
       The default implementation updates the geometry and repaints the widget.
   const QwtScaleDraw * QwtScaleWidget::scaleDraw () const
       scaleDraw of this scale
       See also:
           setScaleDraw(), QwtScaleDraw::setScaleDraw()
   QwtScaleDraw * QwtScaleWidget::scaleDraw ()
       scaleDraw of this scale
       See also:
           QwtScaleDraw::setScaleDraw()
   void QwtScaleWidget::setAlignment (QwtScaleDraw::Alignmentalignment)
       Change the alignment
       Parameters:
           alignment New alignment
       See also:
           alignment()
   void QwtScaleWidget::setBorderDist (intdist1, intdist2)
       Specify distances of the scale's endpoints from the widget's borders. The actual borders
       will never be less than minimum border distance.
       Parameters:
           dist1 Left or top Distance
           dist2 Right or bottom distance
       See also:
           borderDist()
   void QwtScaleWidget::setLabelAlignment (Qt::Alignmentalignment)
       Change the alignment for the labels. See also:
           QwtScaleDraw::setLabelAlignment(), setLabelRotation()
   void QwtScaleWidget::setLabelRotation (doublerotation)
       Change the rotation for the labels. See QwtScaleDraw::setLabelRotation(). Parameters:
           rotation Rotation
       See also:
           QwtScaleDraw::setLabelRotation(), setLabelFlags()
   void QwtScaleWidget::setMargin (intmargin)
       Specify the margin to the colorBar/base line. Parameters:
           margin Margin
       See also:
           margin()
   void QwtScaleWidget::setMinBorderDist (intstart, intend)
       Set a minimum value for the distances of the scale's endpoints from the widget borders.
       This is useful to avoid that the scales are 'jumping', when the tick labels or their
       positions change often.
       Parameters:
           start Minimum for the start border
           end Minimum for the end border
       See also:
           getMinBorderDist(), getBorderDistHint()
   void QwtScaleWidget::setPenWidth (intwidth)
       Specify the width of the scale pen. Parameters:
           width Pen width
       See also:
           penWidth()
   void QwtScaleWidget::setScaleDiv (QwtScaleTransformation *transformation, const QwtScaleDiv
       &scaleDiv)
       Assign a scale division. The scale division determines where to set the tick marks.
       Parameters:
           transformation Transformation, needed to translate between scale and pixal values
           scaleDiv Scale Division
       See also:
           For more information about scale divisions, see QwtScaleDiv.
   void QwtScaleWidget::setScaleDraw (QwtScaleDraw *sd)
       Set a scale draw sd has to be created with new and will be deleted in ~QwtScaleWidget() or
       the next call of setScaleDraw().
       Parameters:
           sd ScaleDraw object
       See also:
           scaleDraw()
   void QwtScaleWidget::setSpacing (intspacing)
       Specify the distance between color bar, scale and title. Parameters:
           spacing Spacing
       See also:
           spacing()
   void QwtScaleWidget::setTitle (const QString &title)
       Give title new text contents
       Parameters:
           title New title
       See also:
           title(), setTitle(const QwtText &);
   void QwtScaleWidget::setTitle (const QwtText &title)
       Give title new text contents
       Parameters:
           title New title
       See also:
           title()
       Warning:
           The title flags are interpreted in direction of the label, AlignTop, AlignBottom can't
           be set as the title will always be aligned to the scale.
   QSize QwtScaleWidget::sizeHint () const [virtual]
       Returns:
           a size hint
   int QwtScaleWidget::spacing () const
       Returns:
           distance between scale and title
       See also:
           setMargin()
   int QwtScaleWidget::startBorderDist () const
       Returns:
           start border distance
       See also:
           setBorderDist()
   QwtText QwtScaleWidget::title () const
       Returns:
           title
       See also:
           setTitle()
   int QwtScaleWidget::titleHeightForWidth (intwidth) const
       Find the height of the title for a given width. Parameters:
           width Width
       Returns:
           height Height

Author

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