DragScroller Class Reference

Drag scroller object. More...

#include <Selection.h>

Inheritance diagram for DragScroller:

Public Slots
void	timeout (void)

Public Member Functions
	DragScroller (QScrollArea *pScrollArea)
	~DragScroller ()
void	endDrag ()
void	startDrag ()

Private Attributes
const int	m_nInterval = 20
QScrollArea *	m_pScrollArea
QTimer *	m_pTimer

Detailed Description

Drag scroller object.

When attached to a QScrollArea, this will scroll the widget whenever the mouse cursor goes out of bounds.

Scrolling is timer-driven to keep a predictable and uniform scroll rate, which increases the further out of bounds the user moves the cursor.

Definition at line 129 of file Selection.h.

Constructor & Destructor Documentation

DragScroller()

DragScroller ( QScrollArea * pScrollArea )

inline

Definition at line 136 of file Selection.h.

~DragScroller()

~DragScroller ( )

inline

Definition at line 141 of file Selection.h.

Member Function Documentation

endDrag()

void endDrag ( )

inline

Definition at line 156 of file Selection.h.

startDrag()

void startDrag ( )

inline

Definition at line 147 of file Selection.h.

timeout

void timeout ( void )

inlineslot

Definition at line 161 of file Selection.h.

Field Documentation

m_nInterval

const int m_nInterval = 20

private

Definition at line 133 of file Selection.h.

m_pScrollArea

QScrollArea* m_pScrollArea

private

Definition at line 132 of file Selection.h.

m_pTimer

QTimer* m_pTimer

private

Definition at line 131 of file Selection.h.