trusty (3) QwtScaleWidget.3.gz
NAME
QwtScaleWidget -
A Widget which contains a scale.
SYNOPSIS
#include <qwt_scale_widget.h>
Public Types
enum LayoutFlag { TitleInverted = 1 }
typedef QFlags< LayoutFlag > LayoutFlags
Signals
void scaleDivChanged ()
Public Member Functions
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
Protected Member Functions
virtual void paintEvent (QPaintEvent *)
virtual void resizeEvent (QResizeEvent *)
void draw (QPainter *p) const
void scaleChange ()
void layoutScale (bool update=true)
Detailed Description
A Widget which contains a scale.
This Widget can be used to decorate composite widgets with a scale.
Member Typedef Documentation
typedef QFlags<LayoutFlag> QwtScaleWidget::LayoutFlags
Layout flags of the title.
Member Enumeration Documentation
enum QwtScaleWidget::LayoutFlag
Layout flags of the title.
Enumerator:
TitleInverted
The title of vertical scales is painted from top to bottom. Otherwise it is painted from bottom to
top.
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
QwtScaleWidget::~QwtScaleWidget () [virtual]
Destructor.
Member Function Documentation
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()
QRectF QwtScaleWidget::colorBarRect (const QRectF &rect) const Calculate the the rectangle for the color bar
Parameters:
rect Bounding rectangle for all components of the scale
Returns:
Rectabgle for the color bar
int QwtScaleWidget::colorBarWidth () const Returns:
Width of the color bar
See also:
setColorBarEnabled(), setColorBarEnabled()
const QwtColorMap * QwtScaleWidget::colorMap () const Returns:
Color map
See also:
setColorMap(), colorBarInterval()
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::draw (QPainter *p) const [protected]
draw the scale
void QwtScaleWidget::drawColorBar (QPainter *painter, const QRectF &rect) const Draw the color bar of the
scale widget
Parameters:
painter Painter
rect Bounding rectangle for the color bar
See also:
setColorBarEnabled()
void QwtScaleWidget::drawTitle (QPainter *painter, QwtScaleDraw::Alignmentalign, const QRectF &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:
• 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()
bool QwtScaleWidget::isColorBarEnabled () const Returns:
true, when the color bar is enabled
See also:
setColorBarEnabled(), setColorBarWidth()
void QwtScaleWidget::layoutScale (boolupdate_geometry = true) [protected] Recalculate the scale's geometry
and layout based on the current rect and fonts.
Parameters:
update_geometry Notify the layout system and call update to redraw the scale
int QwtScaleWidget::margin () const Returns:
margin
See also:
setMargin()
QSize QwtScaleWidget::minimumSizeHint () const [virtual] Returns:
a minimum size hint
void QwtScaleWidget::paintEvent (QPaintEvent *event) [protected, virtual]
paintEvent
void QwtScaleWidget::resizeEvent (QResizeEvent *event) [protected, virtual] Event handler for resize event
Parameters:
event Resize event
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.
void QwtScaleWidget::scaleDivChanged () [signal]
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()
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::setColorBarEnabled (boolon) En/disable a color bar associated to the scale
See also:
isColorBarEnabled(), setColorBarWidth()
void QwtScaleWidget::setColorBarWidth (intwidth) Set the width of the color bar
Parameters:
width Width
See also:
colorBarWidth(), setColorBarEnabled()
void QwtScaleWidget::setColorMap (const QwtInterval &interval, QwtColorMap *colorMap) Set the color map and
value interval, that are used for displaying the color bar.
Parameters:
interval Value interval
colorMap Color map
See also:
colorMap(), colorBarInterval()
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::setLayoutFlag (LayoutFlagflag, boolon) Toggle an layout flag
Parameters:
flag Layout flag
on true/false
See also:
testLayoutFlag(), LayoutFlag
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::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()
bool QwtScaleWidget::testLayoutFlag (LayoutFlagflag) const Test a layout flag
Parameters:
flag Layout flag
Returns:
true/false
See also:
setLayoutFlag(), LayoutFlag
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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