TraceInputArea QML Type

專用 MultiPointTouchArea for collecting touch input data. 更多...

import 語句：	import QtQuick.VirtualKeyboard 2.15
Since:	QtQuick.VirtualKeyboard 2.0
繼承：	MultiPointTouchArea

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特性

boundingBox : rect
canvasType : string
horizontalRulers : var
patternRecognitionMode : int
verticalRulers : var

詳細描述

This type handles the trace interaction between the touch screen and the input engine.

The traces are rendered using the delegate from the traceCanvasDelegate property of the current KeyboardStyle .

特性文檔編製

[read-only] boundingBox : rect

Bounding box for the trace input.

This property is readonly and is automatically updated based on the item size and margins.

canvasType : string

Canvas type of this trace input area.

This property can be used to distinguish between different types of canvases. For example, in full screen handwriting mode this property is set to "fullscreen" , and in keyboard handwriting mode this property is set to "keyboard" .

horizontalRulers : var

List of horizontal rulers in the input area.

The rulers are defined as a number of pixels from the top edge of the boundingBox .

Here is an example that demonstrates how to define rulers:

horizontalRulers: [boundingBox.height / 3, boundingBox.height / 3 * 2]
verticalRulers: [boundingBox.width / 3, boundingBox.width / 3 * 2]

patternRecognitionMode : int

Pattern recognition mode of this input area.

默認值為 InputEngine.PatternRecognitionMode.None .

verticalRulers : var

List of vertical rulers in the input area.

The rulers are defined as a number of pixels from the left edge of the boundingBox .