86 lines
2.2 KiB
C#
86 lines
2.2 KiB
C#
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using UnityEngine;
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using UnityEditor;
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using UnityEngine.UIElements;
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namespace Unity.PlasticSCM.Editor.UI.UIElements
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{
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internal class LoadingSpinner : VisualElement
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{
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internal LoadingSpinner()
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{
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mStarted = false;
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// add child elements to set up centered spinner rotation
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mSpinner = new VisualElement();
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Add(mSpinner);
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mSpinner.style.backgroundImage = Images.GetImage(Images.Name.Loading);
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mSpinner.style.position = Position.Absolute;
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mSpinner.style.width = 16;
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mSpinner.style.height = 16;
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mSpinner.style.left = -8;
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mSpinner.style.top = -8;
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style.position = Position.Relative;
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style.width = 16;
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style.height = 16;
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style.left = 8;
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style.top = 8;
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}
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internal void Dispose()
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{
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if (mStarted)
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EditorApplication.update -= UpdateProgress;
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}
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internal void Start()
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{
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if (mStarted)
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return;
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mRotation = 0;
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mLastRotationTime = EditorApplication.timeSinceStartup;
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EditorApplication.update += UpdateProgress;
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mStarted = true;
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}
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internal void Stop()
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{
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if (!mStarted)
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return;
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EditorApplication.update -= UpdateProgress;
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mStarted = false;
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}
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void UpdateProgress()
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{
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double currentTime = EditorApplication.timeSinceStartup;
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double deltaTime = currentTime - mLastRotationTime;
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#if UNITY_2021_2_OR_NEWER
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mSpinner.transform.rotation = Quaternion.Euler(0, 0, mRotation);
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#else
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transform.rotation = Quaternion.Euler(0, 0, mRotation);
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#endif
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mRotation += (int)(ROTATION_SPEED * deltaTime);
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mRotation = mRotation % 360;
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if (mRotation < 0) mRotation += 360;
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mLastRotationTime = currentTime;
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}
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int mRotation;
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double mLastRotationTime;
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bool mStarted;
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VisualElement mSpinner;
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const int ROTATION_SPEED = 360; // Euler degrees per second
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}
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}
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