The PinchArea item enables simple pinch gesture handling. 更多...
| 继承： | Item |
The PinchArea element was added in QtQuick 1.1
A PinchArea is an invisible item that is typically used in conjunction with a visible item in order to provide pinch gesture handling for that item.
The enabled property is used to enable and disable pinch handling for the proxied item. When disabled, the pinch area becomes transparent to mouse/touch events.
PinchArea 可以按 2 种方式使用：
pinch.target
to provide automatic interaction with an element
另请参阅 PinchEvent .
This property holds whether the item accepts pinch gestures.
This property defaults to true.
|
pinch group |
|---|
|
pinch.target : Item |
pinch
provides a convenient way to make an item react to pinch gestures.
pinch.target
specifies the id of the item to drag.
pinch.active
specifies if the target item is currently being dragged.
pinch.minimumScale
and
pinch.maximumScale
limit the range of the
Item::scale
特性。
pinch.minimumRotation
and
pinch.maximumRotation
limit the range of the
Item::rotation
特性。
pinch.dragAxis
specifies whether dragging in not allowed (
Pinch.NoDrag
), can be done horizontally (
Pinch.XAxis
), vertically (
Pinch.YAxis
), or both (
Pinch.XandYAxis
)
pinch.minimum
and
pinch.maximum
limit how far the target can be dragged along the corresponding axes.
This handler is called when the pinch area detects that a pinch gesture has finished.
The pinch parameter provides information about the pinch gesture, including the scale, center and angle of the pinch.
This handler is called when the pinch area detects that a pinch gesture has started.
The pinch parameter provides information about the pinch gesture, including the scale, center and angle of the pinch.
要忽略此手势设置
pinch.accepted
property to false. The gesture will be cancelled and no further events will be sent.
This handler is called when the pinch area detects that a pinch gesture has changed.
The pinch parameter provides information about the pinch gesture, including the scale, center and angle of the pinch.