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QwtScaleWidget

A Widget which contains a scale.

#include <qwt_scale_widget.h>


enum LayoutFlag { TitleInverted = 1 }
typedef QFlags< LayoutFlag > LayoutFlags


void scaleDivChanged ()


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


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

A Widget which contains a scale.

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

Layout flags of the title.

Layout flags of the title.

Enumerator:

The title of vertical scales is painted from top to bottom. Otherwise it is painted from bottom to top.

Create a scale with the position QwtScaleWidget::Left. Parameters:

parent Parent widget

Constructor. Parameters:

align Alignment.
parent Parent widget

Destructor.

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

position

See also:

setPosition()

QwtInterval QwtScaleWidget::colorBarInterval () const Returns:

Value interval for the color bar

See also:

setColorMap(), colorMap()

Parameters:

rect Bounding rectangle for all components of the scale

Returns:

Rectabgle for the color bar

Width of the color bar

See also:

setColorBarEnabled(), setColorBarEnabled()

const QwtColorMap * QwtScaleWidget::colorMap () const Returns:

Color map

See also:

setColorMap(), colorBarInterval()

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

draw the scale

Parameters:

painter Painter
rect Bounding rectangle for the color bar

See also:

setColorBarEnabled()

Parameters:

painter Painter
align Alignment
rect Bounding rectangle

end border distance

See also:

setBorderDist()

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:

  • The minimum border distance depends on the font.

See also:

setMinBorderDist(), getMinBorderDist(), setBorderDist()

See also:

setMinBorderDist(), getBorderDistHint()

true, when the color bar is enabled

See also:

setColorBarEnabled(), setColorBarWidth()

Parameters:

update_geometry Notify the layout system and call update to redraw the scale

margin

See also:

setMargin()

a minimum size hint

paintEvent

Parameters:

event Resize event

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.

Signal emitted, whenever the scale divison changes.

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()

Parameters:

alignment New alignment

See also:

alignment()

Parameters:

dist1 Left or top Distance
dist2 Right or bottom distance

See also:

borderDist()

See also:

isColorBarEnabled(), setColorBarWidth()

Parameters:

width Width

See also:

colorBarWidth(), setColorBarEnabled()

Parameters:

interval Value interval
colorMap Color map

See also:

colorMap(), colorBarInterval()

Change the alignment for the labels. See also:

QwtScaleDraw::setLabelAlignment(), setLabelRotation()

Change the rotation for the labels. See QwtScaleDraw::setLabelRotation(). Parameters:

rotation Rotation

See also:

QwtScaleDraw::setLabelRotation(), setLabelFlags()

Parameters:

flag Layout flag
on true/false

See also:

testLayoutFlag(), LayoutFlag

Specify the margin to the colorBar/base line. Parameters:

margin Margin

See also:

margin()

Parameters:

start Minimum for the start border
end Minimum for the end border

See also:

getMinBorderDist(), getBorderDistHint()

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.

Parameters:

sd ScaleDraw object

See also:

scaleDraw()

Specify the distance between color bar, scale and title. Parameters:

spacing Spacing

See also:

spacing()

Parameters:

title New title

See also:

title(), setTitle(const QwtText &);

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.

a size hint

distance between scale and title

See also:

setMargin()

start border distance

See also:

setBorderDist()

Parameters:

flag Layout flag

Returns:

true/false

See also:

setLayoutFlag(), LayoutFlag

QwtText QwtScaleWidget::title () const Returns:

title

See also:

setTitle()

Find the height of the title for a given width. Parameters:

width Width

Returns:

height Height

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