WebCore::PinchRecognizer Class Reference

Pinch gesture recognizer. More...

#include <PinchRecognizer.h>

Inheritance diagram for WebCore::PinchRecognizer:

[legend]

Collaboration diagram for WebCore::PinchRecognizer:

[legend]

List of all members.

Public Member Functions
float	scale () const
	Get the current scale.
float	scaleSpeed () const
	Gets current scale speed.
float	distance () const
	Get the current pinch distance.
virtual void	reset ()
	Reset the gesture data.
virtual void	touchEvent (const PlatformTouchEvent &)
	Feed new data.
Private Attributes
float	m_scale
float	m_distance
GestureSpeedCalc	m_speed

---

Detailed Description

Pinch gesture recognizer.

Definition at line 29 of file PinchRecognizer.h.

---

Member Function Documentation

WebCore::PinchRecognizer::distance

(

)

const [inline]

Get the current pinch distance.

Returns:

length of the pinch gesture in pixels.

Definition at line 35 of file PinchRecognizer.h.

References m_distance.

void WebCore::PinchRecognizer::reset

(

)

[virtual]

Reset the gesture data.

Resets the gesture data e.g. when the pinch gesture starts over.

Reimplemented from WebCore::GestureRecognizer.

Definition at line 33 of file PinchRecognizer.cpp.

References m_distance, WebCore::GestureRecognizer::m_refresh, and m_scale.

WebCore::PinchRecognizer::scale

(

)

const [inline]

Get the current scale.

Get the current scale from the pinch gesture.

Returns:

current scale.

Definition at line 33 of file PinchRecognizer.h.

References m_scale.

WebCore::PinchRecognizer::scaleSpeed

(

)

const [inline]

Gets current scale speed.

Get the current scale speed from the pinch gesture, as scale amount per second.

Returns:

current scale speed.

Definition at line 34 of file PinchRecognizer.h.

References m_speed, and WebCore::GestureSpeedCalc::speed().

Here is the call graph for this function:

void WebCore::PinchRecognizer::touchEvent

(

const PlatformTouchEvent &

ev

)

[virtual]

Feed new data.

Processes the touch event and calculates new data for the pinch gesture.

Parameters:

Platform

touch event

Implements WebCore::GestureRecognizer.

Definition at line 46 of file PinchRecognizer.cpp.

References WebCore::GestureRecognizer::calcDistance(), WebCore::GestureSpeedCalc::firstSample(), WebCore::GestureSpeedCalc::insertSample(), m_distance, WebCore::GestureRecognizer::m_id1i, WebCore::GestureRecognizer::m_id2i, WebCore::GestureRecognizer::m_refresh, m_scale, m_speed, WebCore::GestureRecognizer::selectValidPoints(), and WebCore::GestureRecognizer::updateRefreshState().

Here is the call graph for this function:

---

Member Data Documentation

float WebCore::PinchRecognizer::m_distance [private]

Definition at line 45 of file PinchRecognizer.h.

float WebCore::PinchRecognizer::m_scale [private]

Definition at line 44 of file PinchRecognizer.h.

GestureSpeedCalc WebCore::PinchRecognizer::m_speed [private]

Definition at line 46 of file PinchRecognizer.h.

---

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

• PinchRecognizer.h
• PinchRecognizer.cpp