Package org.teavm.jso.dom.events
Interface Touch
- All Superinterfaces:
org.teavm.jso.JSObject
public interface Touch
extends org.teavm.jso.JSObject
The Touch interface represents a single contact point on a touch-sensitive device.
The contact point is commonly a finger or stylus and the device may be a touchscreen or trackpad.
The getRadiusX()
, getRadiusY()
, and getRotationAngle()
describe the area of contact between the user and the screen, the touch area.
This can be helpful when dealing with imprecise pointing devices such as fingers.
These values are set to describe an ellipse that as closely as possible matches
the entire area of contact (such as the user's fingertip).
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Method Summary
Modifier and TypeMethodDescriptiondouble
Returns the X coordinate of the touch point relative to the left edge of the browser viewport, not including any scroll offset.double
Returns the Y coordinate of the touch point relative to the top edge of the browser viewport, not including any scroll offset.double
getForce()
Returns the amount of pressure being applied to the surface by the user, as a float between 0.0 (no pressure) and 1.0 (maximum pressure).int
Returns a unique identifier for this Touch object.double
getPageX()
Returns the X coordinate of the touch point relative to the left edge of the document.double
getPageY()
Returns the Y coordinate of the touch point relative to the top of the document.double
Returns the X radius of the ellipse that most closely circumscribes the area of contact with the screen.double
Returns the Y radius of the ellipse that most closely circumscribes the area of contact with the screen.double
Returns the angle (in degrees) that the ellipse described by radiusX and radiusY must be rotated, clockwise, to most accurately cover the area of contact between the user and the surface.double
Returns the X coordinate of the touch point relative to the left edge of the screen.double
Returns the Y coordinate of the touch point relative to the top edge of the screen.Returns theTouchEventTarget
on which the touch point started when it was first placed on the surface, even if the touch point has since moved outside the interactive area of that element or even been removed from the document.Methods inherited from interface org.teavm.jso.JSObject
cast
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Method Details
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getIdentifier
int getIdentifier()Returns a unique identifier for this Touch object. A given touch point (say, by a finger) will have the same identifier for the duration of its movement around the surface. This lets you ensure that you're tracking the same touch all the time. -
getScreenX
double getScreenX()Returns the X coordinate of the touch point relative to the left edge of the screen. -
getScreenY
double getScreenY()Returns the Y coordinate of the touch point relative to the top edge of the screen. -
getClientX
double getClientX()Returns the X coordinate of the touch point relative to the left edge of the browser viewport, not including any scroll offset. -
getClientY
double getClientY()Returns the Y coordinate of the touch point relative to the top edge of the browser viewport, not including any scroll offset. -
getPageX
double getPageX()Returns the X coordinate of the touch point relative to the left edge of the document. Unlike clientX, this value includes the horizontal scroll offset, if any. -
getPageY
double getPageY()Returns the Y coordinate of the touch point relative to the top of the document. Unlike clientY, this value includes the vertical scroll offset, if any. -
getTarget
TouchEventTarget getTarget()Returns theTouchEventTarget
on which the touch point started when it was first placed on the surface, even if the touch point has since moved outside the interactive area of that element or even been removed from the document. -
getRadiusX
double getRadiusX()Returns the X radius of the ellipse that most closely circumscribes the area of contact with the screen. The value is in pixels of the same scale as screenX. -
getRadiusY
double getRadiusY()Returns the Y radius of the ellipse that most closely circumscribes the area of contact with the screen. The value is in pixels of the same scale as screenY. -
getRotationAngle
double getRotationAngle()Returns the angle (in degrees) that the ellipse described by radiusX and radiusY must be rotated, clockwise, to most accurately cover the area of contact between the user and the surface. -
getForce
double getForce()Returns the amount of pressure being applied to the surface by the user, as a float between 0.0 (no pressure) and 1.0 (maximum pressure).
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