Group manager for synchronizing multiple QwtPlotSeriesDataPicker instances across plot widgets 更多...

#include <qwt_plot_series_data_picker_group.h>

类 QwtPlotSeriesDataPickerGroup 继承关系图:

类
class	PrivateData

Public 槽
void	onPickerMove (const QPoint &pos)

void	onPickerActivated (bool on)

void	onPickerDestroy (QObject *obj)

void	onPickerClicked (QwtPlotSeriesDataPicker *picker, const QPoint &pos)
	Handles click signal from a picker, syncs other pickers, then emits group's clicked signal

void	onPickerDoubleClicked (QwtPlotSeriesDataPicker *picker, const QPoint &pos)
	Handles double-click signal from a picker, syncs other pickers, then emits group's doubleClicked signal

信号
void	clicked (QwtPlotSeriesDataPicker *picker, const QPoint &pos)
	Emitted when a picker in the group is clicked

void	doubleClicked (QwtPlotSeriesDataPicker *picker, const QPoint &pos)
	Emitted when a picker in the group is double-clicked

Public 成员函数
	QwtPlotSeriesDataPickerGroup (QObject *par=nullptr)
	Constructor

	~QwtPlotSeriesDataPickerGroup () override
	Destructor

void	addPicker (QwtPlotSeriesDataPicker *pick)
	Add a picker to the group

void	removePicker (QwtPlotSeriesDataPicker *pick)
	Remove a picker from the group

QList< QwtPlotSeriesDataPicker * >	pickers () const
	Get all pickers in the group

void	setEnabled (bool on)
	Set enabled state

bool	isEnabled () const
	Check if enabled

详细描述

Group manager for synchronizing multiple QwtPlotSeriesDataPicker instances across plot widgets

This class enables coordinated interaction among multiple plot pickers, currently implementing synchronized X-axis proportional positioning. When a user moves the mouse over one plot within a subplot arrangement, the active picker displays its Y-value while all other pickers in the same group automatically position themselves at equivalent X-axis proportional locations on their respective plots, creating a unified cross-plot data inspection experience.

Key features:

Automatic synchronization of picker positions based on X-axis proportion
Dynamic membership management (add/remove pickers at runtime)
Automatic cleanup when pickers are destroyed
Activation state synchronization across the group

注解: Currently supports only X-axis proportional synchronization; Y-axis values are displayed independently per plot based on local data at the synchronized X position.

构造及析构函数说明

◆ QwtPlotSeriesDataPickerGroup()

QwtPlotSeriesDataPickerGroup::QwtPlotSeriesDataPickerGroup ( QObject * par = nullptr )

Constructor

参数

[in] par Parent object

Destructor

成员函数说明

◆ addPicker()

void QwtPlotSeriesDataPickerGroup::addPicker ( QwtPlotSeriesDataPicker * pick )

Add a picker to the group

Adds a picker to the synchronization group

参数

pick	Pointer to QwtPlotSeriesDataPicker instance to be added to the group

注解: The picker must belong to a QwtPlot with properly configured axes. Adding a null pointer or a picker already in the group has no effect. The group does not take ownership of the picker.

警告: Pickers from plots with significantly different X-axis scales may show positioning artifacts due to proportional mapping limitations.

◆ clicked

void QwtPlotSeriesDataPickerGroup::clicked	(	QwtPlotSeriesDataPicker *	picker,
		const QPoint &	pos
	)

signal

Emitted when a picker in the group is clicked

参数

picker	The picker that was clicked
pos	The click position in picker's canvas coordinates

◆ doubleClicked

void QwtPlotSeriesDataPickerGroup::doubleClicked	(	QwtPlotSeriesDataPicker *	picker,
		const QPoint &	pos
	)

signal

Emitted when a picker in the group is double-clicked

参数

picker	The picker that was double-clicked
pos	The double-click position in picker's canvas coordinates

◆ isEnabled()

bool QwtPlotSeriesDataPickerGroup::isEnabled ( ) const

Check if enabled

Check if synchronization is enabled

返回: True if enabled

参见: setEnabled()

◆ onPickerClicked

void QwtPlotSeriesDataPickerGroup::onPickerClicked	(	QwtPlotSeriesDataPicker *	picker,
		const QPoint &	pos
	)

slot

Handles click signal from a picker, syncs other pickers, then emits group's clicked signal

参数

picker	The picker that emitted the click signal
pos	The click position

◆ onPickerDoubleClicked

void QwtPlotSeriesDataPickerGroup::onPickerDoubleClicked	(	QwtPlotSeriesDataPicker *	picker,
		const QPoint &	pos
	)

slot

Handles double-click signal from a picker, syncs other pickers, then emits group's doubleClicked signal

参数

picker	The picker that emitted the double-click signal
pos	The double-click position

◆ pickers()

QList< QwtPlotSeriesDataPicker * > QwtPlotSeriesDataPickerGroup::pickers ( ) const

Get all pickers in the group

Returns the list of all pickers currently in the group

返回: QList containing pointers to all managed QwtPlotSeriesDataPicker instances

注解: The returned list is a copy; modifications to it do not affect the internal group state. Use addPicker() to modify group membership.

◆ removePicker()

void QwtPlotSeriesDataPickerGroup::removePicker ( QwtPlotSeriesDataPicker * pick )

Remove a picker from the group

参数

[in] pick Pointer to QwtPlotSeriesDataPicker instance to be removed from the group

注解: If the picker is not in the group, this function has no effect.

◆ setEnabled()

void QwtPlotSeriesDataPickerGroup::setEnabled ( bool on )

Set enabled state

When disabled, picker synchronization will not occur.

参数

[in] on Enable/disable synchronization

参见: isEnabled()

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/plot/qwt_plot_series_data_picker_group.h
/home/runner/work/QWT/QWT/src/plot/qwt_plot_series_data_picker_group.cpp

类

Public 槽

信号

Public 成员函数

详细描述

构造及析构函数说明

◆ QwtPlotSeriesDataPickerGroup()

成员函数说明

◆ addPicker()

◆ clicked

◆ doubleClicked

◆ isEnabled()

◆ onPickerClicked

◆ onPickerDoubleClicked

◆ pickers()

◆ removePicker()

◆ setEnabled()