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47 行
1.7 KiB

using Unity.UIWidgets.foundation;
using Unity.UIWidgets.ui;
using UnityEngine.EventSystems;
namespace Unity.UIWidgets.engine {
static class InputUtils {
const int mouseScrollId = 1;
const int preservedKeyNum = 10;
const int preservedMouseKeyNum = 100;
const int fingerKeyStart = preservedKeyNum + preservedMouseKeyNum;
public static PointerDeviceKind getPointerDeviceKind(PointerEventData eventData) {
return isTouchEvent(eventData) ? PointerDeviceKind.touch : PointerDeviceKind.mouse;
}
public static int getPointerDeviceKey(PointerEventData eventData) {
return isTouchEvent(eventData)
? getTouchFingerKey(eventData.pointerId)
: getMouseButtonKey((int) eventData.button);
}
public static int getScrollButtonKey() {
return mouseScrollId;
}
public static int getMouseButtonKey(int buttonId) {
D.assert(buttonId < preservedMouseKeyNum);
return buttonId + preservedKeyNum;
}
static int getTouchFingerKey(int fingerId) {
return fingerId + fingerKeyStart;
}
static bool isTouchEvent(PointerEventData eventData) {
//pointerId >= 0 : touches
//ref: https://docs.unity3d.com/ScriptReference/EventSystems.PointerEventData-pointerId.html
return eventData.pointerId >= 0;
}
static bool isMouseEvent(PointerEventData eventData) {
//pointerId = -1, -2, -3 : mouse buttons
//ref: https://docs.unity3d.com/ScriptReference/EventSystems.PointerEventData-pointerId.html
return eventData.pointerId < 0;
}
}
}