DISPLIB::FrequencySpectrumDelegate Class Reference

QAbstractItemDelegate painting one SpectrumView row as a horizontal frequency band. More...

#include <frequencyspectrumdelegate.h>

Public Member Functions
	FrequencySpectrumDelegate (QTableView *m_pTableView, QObject *parent=0)
void	setScaleType (qint8 ScaleType)
virtual void	paint (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
virtual QSize	sizeHint (const QStyleOptionViewItem &option, const QModelIndex &index) const
void	rcvMouseLoc (int row, int x, int y, QRect visRect)

Detailed Description

QAbstractItemDelegate painting one SpectrumView row as a horizontal frequency band.

Maps the per-row FFT amplitudes through a Hot / Jet colour table and draws the resulting pixel strip plus the lower / upper frequency cursors during paint().

Definition at line 69 of file frequencyspectrumdelegate.h.

Inheritance diagram for DISPLIB::FrequencySpectrumDelegate:

Constructor & Destructor Documentation

FrequencySpectrumDelegate()

FrequencySpectrumDelegate::FrequencySpectrumDelegate	(	QTableView *	m_pTableView,
		QObject *	parent = 0 )

Creates a new abstract item delegate with the given parent.

Parameters

[in,out]	m_pTableView	Table view the delegate paints into.
[in]	parent	Parent of the delegate.

Definition at line 46 of file frequencyspectrumdelegate.cpp.

Member Function Documentation

paint()

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

virtual

Use the painter and style option to render the item specified by the item index.

(sizeHint() must be implemented also)

Parameters

[in]	painter	Low-level painting on widgets and other paint devices.
[in]	option	Describes the parameters used to draw an item in a view widget.
[in]	index	Used to locate data in a data model.

Definition at line 69 of file frequencyspectrumdelegate.cpp.

rcvMouseLoc()

void FrequencySpectrumDelegate::rcvMouseLoc	(	int	row,
		int	x,
		int	y,
		QRect	visRect )

Receive Mouse location

Parameters

[in]	row	The select row of tableview.
[in]	x	mouse x pos.
[in]	y	mouse y pos.
[in]	visRect	visual rect of row_tableview.

Definition at line 174 of file frequencyspectrumdelegate.cpp.

setScaleType()

void FrequencySpectrumDelegate::setScaleType

(

qint8

ScaleType

)

Set scale type.

Parameters

[in]

ScaleType

Frequency axis scale type.

Definition at line 62 of file frequencyspectrumdelegate.cpp.

sizeHint()

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

virtual

Item size

Parameters

[in]	option	Describes the parameters used to draw an item in a view widget.
[in]	index	Used to locate data in a data model.

Returns

20 pixels wide by the row height for column 0, an invalid QSize otherwise.

Definition at line 152 of file frequencyspectrumdelegate.cpp.

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

• src/libraries/disp/viewers/helpers/frequencyspectrumdelegate.h
• src/libraries/disp/viewers/helpers/frequencyspectrumdelegate.cpp