harmony 鸿蒙@ohos.multimodalInput.touchEvent (Touch Event)

2022-08-09
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@ohos.multimodalInput.touchEvent (Touch Event)

The touchEvent module provides touchscreen events reported by a device. It is inherited from InputEvent.

NOTE

The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import {Action,ToolType,SourceType,Touch,TouchEvent} from '@ohos.multimodalInput.touchEvent';

Action

Enumerates touch event types.

System capability: SystemCapability.MultimodalInput.Input.Core

Name	Value	Description
CANCEL	0	Cancellation of touch.
DOWN	1	Pressing of touch.
MOVE	2	Moving of touch.
UP	3	Lifting of touch.

ToolType

Enumerates touch tool types.

System capability: SystemCapability.MultimodalInput.Input.Core

Name	Value	Description
FINGER	0	Finger
PEN	1	Stylus
RUBBER	2	Eraser
BRUSH	3	Brush
PENCIL	4	Pencil
AIRBRUSH	5	Air brush
MOUSE	6	Mouse
LENS	7	Lens

SourceType

Enumerates touch source types.

System capability: SystemCapability.MultimodalInput.Input.Core

Name	Value	Description
TOUCH_SCREEN	0	Touchscreen
PEN	1	Stylus
TOUCH_PAD	2	Touchpad

Touch

Defines the touch point information.

System capability: SystemCapability.MultimodalInput.Input.Core

Name	Type	Readable	Writable	Description
id	number	Yes	No	Touch event ID.
pressedTime	number	Yes	No	Press timestamp, in μs.
screenX	number	Yes	No	X coordinate of the touch position on the screen.
screenY	number	Yes	No	Y coordinate of the touch position on the screen.
windowX	number	Yes	No	X coordinate of the touch position in the window.
windowY	number	Yes	No	Y coordinate of the touch position in the window.
pressure	number	Yes	No	Pressure value. The value range is [0.0, 1.0]. The value 0.0 indicates that the pressure is not supported.
width	number	Yes	No	Width of the touch area.
height	number	Yes	No	Height of the touch area.
tiltX	number	Yes	No	Angle relative to the YZ plane. The value range is [-90, 90]. A positive value indicates a rightward tilt.
tiltY	number	Yes	No	Angle relative to the XZ plane. The value range is [-90, 90]. A positive value indicates a downward tilt.
toolX	number	Yes	No	X coordinate of the center point of the tool area.
toolY	number	Yes	No	Y coordinate of the center point of the tool area.
toolWidth	number	Yes	No	Width of the tool area.
toolHeight	number	Yes	No	Height of the tool area.
rawX	number	Yes	No	X coordinate of the input device.
rawY	number	Yes	No	Y coordinate of the input device.
toolType	ToolType	Yes	No	Tool type.