osmscout::TapRecognizer Class Reference

#include <libosmscout-client-qt/include/osmscout/InputHandler.h>

Inheritance diagram for osmscout::TapRecognizer:

Collaboration diagram for osmscout::TapRecognizer:

Signals
void	tap (const QPoint p)
void	doubleTap (const QPoint p)
void	longTap (const QPoint p)
void	tapLongTap (const QPoint p)
void	tapAndDrag (const QPoint p)

Public Member Functions
	TapRecognizer ()
	~TapRecognizer () override=default
void	touch (const QTouchEvent &event)
void	setPhysicalDpi (double physicalDpi)

Detailed Description

Simple class for recognizing some basic gestures: tap, double tap, long-tap and tap-and-hold.

Widget should send own QTouchEvent to this object, when some tap gesture is recognized it emits one of its signals.

• Tap: touch shorter than holdInterval (1000 ms) followed with pause longer than tapInterval (200 ms)
• Long tap: touch longer than holdInterval (1000 ms)
• Double tap: tap followed by second one within tapInterval (200 ms)
• Tap, drag: tap followed by drag
• Tap, long tap: tap followed by long tap within tapInterval (200 ms)

Physical DPI of display should be setup before first use. TapRecognizer use some small move tolerance (~ 2.5 mm), it means that events are emitted even that touch point is moving within this tolerance. For double tap, when second tap is farther than this tolerance, double-tap event is not emitted.

Constructor & Destructor Documentation

TapRecognizer()

osmscout::TapRecognizer::TapRecognizer ( )

inline

~TapRecognizer()

osmscout::TapRecognizer::~TapRecognizer ( )

overridedefault

Member Function Documentation

doubleTap

void osmscout::TapRecognizer::doubleTap ( const QPoint  p )

signal

longTap

void osmscout::TapRecognizer::longTap ( const QPoint  p )

signal

setPhysicalDpi()

void osmscout::TapRecognizer::setPhysicalDpi ( double  physicalDpi )

inline

tap

void osmscout::TapRecognizer::tap ( const QPoint  p )

signal

tapAndDrag

void osmscout::TapRecognizer::tapAndDrag ( const QPoint  p )

signal

tapLongTap

void osmscout::TapRecognizer::tapLongTap ( const QPoint  p )

signal

touch()

void osmscout::TapRecognizer::touch

(

const QTouchEvent &

event

)

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

• libosmscout-client-qt/include/osmscout/InputHandler.h