SparkLineDelegate Class Reference

Item delegate that renders a spark-line (miniature inline chart) for cells whose model data contains a series of numeric values. More...

#include <sparkline_delegate.h>

Inheritance diagram for SparkLineDelegate:

Public Member Functions
	SparkLineDelegate (QWidget *parent=0)
	Constructs a SparkLineDelegate.

Protected Member Functions
void	paint (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Renders the spark-line chart for the cell at index.
QSize	sizeHint (const QStyleOptionViewItem &option, const QModelIndex &index) const
	Returns the preferred size for a spark-line cell.
QWidget *	createEditor (QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Suppresses inline editing by returning nullptr.

Detailed Description

Item delegate that renders a spark-line (miniature inline chart) for cells whose model data contains a series of numeric values.

Constructor & Destructor Documentation

SparkLineDelegate()

SparkLineDelegate::SparkLineDelegate ( QWidget *  parent = 0 )

inline

Constructs a SparkLineDelegate.

Parameters

parent

Optional parent widget.

Member Function Documentation

createEditor()

QWidget * SparkLineDelegate::createEditor ( QWidget *  parent, const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

protected

Suppresses inline editing by returning nullptr.

Spark-line cells are display-only; no editor widget is created.

Parameters

parent	Unused parent widget.
option	Unused style option.
index	Unused model index.

Returns

Always nullptr.

paint()

void SparkLineDelegate::paint ( QPainter *  painter, const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

protected

Renders the spark-line chart for the cell at index.

Parameters

painter	Painter to draw with.
option	Style option providing geometry, palette, and state.
index	Model index of the cell being painted.

sizeHint()

QSize SparkLineDelegate::sizeHint ( const QStyleOptionViewItem &  option, const QModelIndex &  index  ) const

protected

Returns the preferred size for a spark-line cell.

Parameters

option	Style option providing font metrics and state.
index	Model index of the cell being measured.

Returns

Recommended QSize for the cell.

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The documentation for this class was generated from the following files:

• /builds/wireshark/wireshark/ui/qt/models/sparkline_delegate.h
• /builds/wireshark/wireshark/ui/qt/models/sparkline_delegate.cpp