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52 lines
2.5 KiB
52 lines
2.5 KiB
using System;
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using System.Diagnostics;
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using UnityEditor;
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using UnityEngine;
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namespace FullscreenEditor {
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/// <summary>Utility class for running async tasks within the main thread.</summary>
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public static class After {
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/// <summary>Wait for a condition to become true, then executes the callback.</summary>
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/// <param name="condition">Function that will be called every frame that returns whether to invoke the callback or not.</param>
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/// <param name="callback">The callback to be called when the condition becomes true.</param>
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/// <param name="timeoutMs">Maximum time to wait in milliseconds before cancelling the callback.</param>
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public static void Condition(Func<bool> condition, Action callback, double timeoutMs = 0d) {
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var update = new EditorApplication.CallbackFunction(() => { });
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var timeoutsAt = EditorApplication.timeSinceStartup + (timeoutMs / 1000d);
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var stack = new StackFrame(1, true);
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update = () => {
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if (timeoutMs > 0d && EditorApplication.timeSinceStartup >= timeoutsAt) {
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EditorApplication.update -= update;
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Logger.Error("Condition timedout at {0}:{1}", stack.GetFileName(), stack.GetFileLineNumber());
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return;
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}
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if (condition()) {
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EditorApplication.update -= update;
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callback();
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}
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};
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EditorApplication.update += update;
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}
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/// <summary>Wait for the given amount of editor frames, then executes the callback.</summary>
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/// <param name="frames">The number of frames to wait for.</param>
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/// <param name="callback">The callback to be called after the specified frames.</param>
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public static void Frames(int frames, Action callback) {
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var f = 0;
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Condition(() => f++ >= frames, callback);
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}
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/// <summary>Wait for the given time, then executes the callback.</summary>
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/// <param name="milliseconds">How long to wait until calling the callback, in milliseconds.</param>
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/// <param name="callback">The callback to be called after the specified time.</param>
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public static void Milliseconds(double milliseconds, Action callback) {
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var end = EditorApplication.timeSinceStartup + (milliseconds / 1000f);
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Condition(() => EditorApplication.timeSinceStartup >= end, callback);
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}
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}
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}
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