84 lines
2.0 KiB
C#
84 lines
2.0 KiB
C#
using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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namespace Cryville.Common.Unity.UI {
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public class AspectRatioLayoutElement : UIBehaviour, ILayoutElement {
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[SerializeField]
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private float m_aspectRatio = 1;
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public float AspectRatio {
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get { return m_aspectRatio; }
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set { SetProperty(ref m_aspectRatio, value); }
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}
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[SerializeField]
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private bool m_isVertical = false;
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public bool IsVertical {
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get { return m_isVertical; }
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set { SetProperty(ref m_isVertical, value); }
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}
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private void SetProperty<T>(ref T prop, T value) {
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if (Equals(prop, value)) return;
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prop = value;
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SetDirty();
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}
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private void SetDirty() {
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if (!IsActive()) return;
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LayoutRebuilder.MarkLayoutForRebuild(transform as RectTransform);
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}
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public float minWidth {
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get {
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return m_isVertical ? 0 : (transform as RectTransform).rect.height * m_aspectRatio;
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}
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}
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public float preferredWidth { get { return minWidth; } }
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public float flexibleWidth { get { return 0; } }
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public float minHeight {
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get {
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return m_isVertical ? (transform as RectTransform).rect.width / m_aspectRatio : 0;
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}
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}
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public float preferredHeight { get { return minHeight; } }
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public float flexibleHeight { get { return 0; } }
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public int layoutPriority { get { return 1; } }
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public void CalculateLayoutInputHorizontal() { }
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public void CalculateLayoutInputVertical() { }
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protected override void OnDidApplyAnimationProperties() {
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base.OnDidApplyAnimationProperties();
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SetDirty();
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}
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protected override void OnDisable() {
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SetDirty();
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base.OnDisable();
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}
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protected override void OnEnable() {
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base.OnEnable();
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SetDirty();
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}
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protected override void OnRectTransformDimensionsChange() {
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base.OnRectTransformDimensionsChange();
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SetDirty();
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}
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protected override void OnTransformParentChanged() {
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base.OnTransformParentChanged();
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SetDirty();
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}
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protected override void OnValidate() {
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SetDirty();
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}
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}
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}
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