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530 lines
19 KiB
C#
530 lines
19 KiB
C#
3 months ago
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// Animancer // Copyright 2020 Kybernetik //
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#if UNITY_EDITOR
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using System.Collections.Generic;
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using UnityEditor;
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using UnityEngine;
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namespace Animancer.Editor
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{
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/// <summary>[Editor-Only] Draws a GUI box denoting a period of time.</summary>
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public sealed class TimeRuler
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{
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/************************************************************************************************************************/
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#region Fields
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/************************************************************************************************************************/
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private static readonly ConversionCache<float, string>
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G2Cache = new ConversionCache<float, string>((value) =>
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{
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if (Mathf.Abs(value) <= 99)
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return value.ToString("G2");
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else
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return ((int)value).ToString();
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});
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private static readonly Color
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FadeHighlightColor = new Color(0.35f, 0.5f, 1, 0.5f),
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SelectedEventColor = new Color(0.3f, 0.55f, 0.95f),
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UnselectedEventColor = new Color(0.9f, 0.9f, 0.9f),
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PreviewTimeColor = new Color(1, 0.25f, 0.1f),
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BaseTimeColor = new Color(0.5f, 0.5f, 0.5f, 0.75f);
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private Rect _Area;
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private float _Speed, _Duration, _MinTime, _MaxTime, _StartTime, _FadeInEnd, _FadeOutEnd, _EndTime, _SecondsToPixels;
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private bool _HasEndTime;
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private readonly List<float>
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EventTimes = new List<float>();
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/************************************************************************************************************************/
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#endregion
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/************************************************************************************************************************/
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#region Conversions
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/************************************************************************************************************************/
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/// <summary>Converts a number of seconds to a horizontal pixel position along the ruler.</summary>
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public float SecondsToPixels(float seconds)
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{
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return (seconds - _MinTime) * _SecondsToPixels;
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}
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/// <summary>Converts a horizontal pixel position along the ruler to a number of seconds.</summary>
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public float PixelsToSeconds(float pixels)
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{
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return (pixels / _SecondsToPixels) + _MinTime;
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}
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/// <summary>Converts a number of seconds to a normalized time value.</summary>
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public float SecondsToNormalized(float seconds)
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{
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return seconds / _Duration;
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}
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/************************************************************************************************************************/
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#endregion
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/************************************************************************************************************************/
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/// <summary>
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/// Sets the `area` in which the ruler will be drawn and draws a <see cref="GUI.Box(Rect, string)"/> there.
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/// Must be followed by a call to <see cref="EndGUI"/>.
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/// </summary>
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public void BeginGUI(Rect area)
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{
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area = EditorGUI.IndentedRect(area);
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GUI.Box(area, "");
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#if !UNITY_2019_3_OR_NEWER
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const float Padding = 1;
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area.x += Padding;
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area.y += Padding;
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area.width -= Padding * 2;
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area.height -= Padding * 2;
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#endif
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GUI.BeginClip(area);
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area.x = area.y = 0;
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_Area = area;
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}
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/// <summary>
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/// Uses any unused <see cref="EventType.MouseDown"/> events in the area and ends the area started by
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/// <see cref="BeginGUI"/>.
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/// </summary>
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public void EndGUI()
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{
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GUI.EndClip();
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}
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/************************************************************************************************************************/
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/// <summary>
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/// Draws the ruler GUI and handles input events for the specified `context`.
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/// </summary>
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public void DoGUI(Rect area, EventSequenceDrawer.Context context, out float addEventNormalizedTime)
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{
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BeginGUI(area);
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var transition = context.TransitionContext.Transition;
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_Speed = transition.Speed;
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var playDirection = _Speed < 0 ? -1 : 1;
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_Duration = context.TransitionContext.MaximumDuration;
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if (_Duration <= 0)
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_Duration = 1;
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GatherEventTimes(context);
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_StartTime = transition.NormalizedStartTime;
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if (float.IsNaN(_StartTime))
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{
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_StartTime = _Speed < 0 ? _Duration : 0;
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}
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else
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{
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_StartTime *= _Duration;
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}
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_FadeInEnd = _StartTime + transition.FadeDuration * playDirection;
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_FadeOutEnd = GetFadeOutEnd(_Speed, _EndTime, _Duration);
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_MinTime = Mathf.Min(0, _StartTime);
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_MinTime = Mathf.Min(_MinTime, _FadeOutEnd);
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_MinTime = Mathf.Min(_MinTime, EventTimes[0]);
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_MaxTime = Mathf.Max(_StartTime, _FadeOutEnd);
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if (EventTimes.Count >= 2)
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_MaxTime = Mathf.Max(_MaxTime, EventTimes[EventTimes.Count - 2]);
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if (_MaxTime < _Duration)
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_MaxTime = _Duration;
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_SecondsToPixels = _Area.width / (_MaxTime - _MinTime);
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DoFadeHighlightGUI();
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DoEventsGUI(context, out addEventNormalizedTime);
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DoRulerGUI();
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if (_Speed > 0)
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{
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if (_StartTime > _EndTime)
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GUI.Label(_Area, "Start Time is after End Time");
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}
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else if (_Speed < 0)
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{
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if (_StartTime < _EndTime)
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GUI.Label(_Area, "Start Time is before End Time");
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}
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EndGUI();
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}
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/************************************************************************************************************************/
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/// <summary>Calculates the end time of the fade out.</summary>
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public static float GetFadeOutEnd(float speed, float endTime, float duration)
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{
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if (speed < 0)
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return endTime > 0 ? 0 : endTime - AnimancerPlayable.DefaultFadeDuration;
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else
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return endTime < duration ? duration : endTime + AnimancerPlayable.DefaultFadeDuration;
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}
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/************************************************************************************************************************/
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private static readonly Vector3[] QuadVerts = new Vector3[4];
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/// <summary>
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/// Draws a polygon describing the start, end, and fade details.
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/// </summary>
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public void DoFadeHighlightGUI()
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{
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if (Event.current.type != EventType.Repaint)
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return;
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var color = Handles.color;
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Handles.color = FadeHighlightColor;
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QuadVerts[0] = new Vector3(SecondsToPixels(_StartTime), _Area.y);
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QuadVerts[1] = new Vector3(SecondsToPixels(_FadeInEnd), _Area.yMax);
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QuadVerts[2] = new Vector3(SecondsToPixels(_FadeOutEnd), _Area.yMax);
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QuadVerts[3] = new Vector3(SecondsToPixels(_EndTime), _Area.y);
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Handles.DrawAAConvexPolygon(QuadVerts);
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Handles.color = color;
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}
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/************************************************************************************************************************/
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#region Events
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/************************************************************************************************************************/
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private void GatherEventTimes(EventSequenceDrawer.Context context)
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{
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EventTimes.Clear();
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if (context.TimeCount > 0)
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{
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var depth = context.Times.depth;
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var time = context.GetTime(0);
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while (time.depth > depth)
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{
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EventTimes.Add(time.floatValue * _Duration);
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time.Next(false);
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}
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_EndTime = EventTimes[EventTimes.Count - 1];
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if (!float.IsNaN(_EndTime))
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{
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_HasEndTime = true;
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return;
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}
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}
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_EndTime = AnimancerEvent.Sequence.GetDefaultNormalizedEndTime(_Speed) * _Duration;
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_HasEndTime = false;
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if (EventTimes.Count == 0)
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EventTimes.Add(_EndTime);
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else
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EventTimes[EventTimes.Count - 1] = _EndTime;
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}
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/************************************************************************************************************************/
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private static readonly int EventHash = "Event".GetHashCode();
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private static readonly List<int> EventControlIDs = new List<int>();
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/// <summary>
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/// Draws the details of the <see cref="EventSequenceDrawer.Context.Callbacks"/>.
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/// </summary>
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public void DoEventsGUI(EventSequenceDrawer.Context context, out float addEventNormalizedTime)
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{
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addEventNormalizedTime = float.NaN;
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var currentGUIEvent = Event.current;
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EventControlIDs.Clear();
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var selectedEventControlID = -1;
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var baseControlID = GUIUtility.GetControlID(EventHash - 1, FocusType.Passive);
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for (int i = 0; i < EventTimes.Count; i++)
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{
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var controlID = GUIUtility.GetControlID(EventHash + i, FocusType.Keyboard);
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EventControlIDs.Add(controlID);
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if (context.SelectedEvent == i)
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selectedEventControlID = controlID;
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}
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EventControlIDs.Add(baseControlID);
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switch (currentGUIEvent.type)
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{
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case EventType.Repaint:
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RepaintEventsGUI(context);
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break;
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case EventType.MouseDown:
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if (_Area.Contains(currentGUIEvent.mousePosition))
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OnMouseDown(currentGUIEvent, context, out addEventNormalizedTime);
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break;
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case EventType.MouseDrag:
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if (GUIUtility.hotControl == baseControlID)
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{
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SetPreviewTime(currentGUIEvent);
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GUIUtility.ExitGUI();
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}
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break;
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case EventType.KeyUp:
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if (GUIUtility.keyboardControl == selectedEventControlID &&
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(currentGUIEvent.keyCode == KeyCode.Delete || currentGUIEvent.keyCode == KeyCode.Backspace))
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{
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EventSequenceDrawer.RemoveEvent(context, context.SelectedEvent);
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GUIUtility.ExitGUI();
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}
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break;
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}
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}
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/************************************************************************************************************************/
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private void RepaintEventsGUI(EventSequenceDrawer.Context context)
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{
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var color = GUI.color;
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for (int i = 0; i < EventTimes.Count; i++)
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{
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var currentColor = color;
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// Read Only: currentColor *= new Color(0.9f, 0.9f, 0.9f, 0.5f * alpha);
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if (context.SelectedEvent == i)
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{
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currentColor *= SelectedEventColor;
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}
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else
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{
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currentColor *= UnselectedEventColor;
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}
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if (i == EventTimes.Count - 1 && !_HasEndTime)
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currentColor.a *= 0.65f;
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GUI.color = currentColor;
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var area = GetEventIconArea(i);
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GUI.DrawTexture(area, Styles.EventIcon);
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}
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GUI.color = color;
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}
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/************************************************************************************************************************/
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private void OnMouseDown(Event currentGUIEvent, EventSequenceDrawer.Context context, out float addEventNormalizedTime)
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{
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var selectedEventControlID = 0;
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var selectedEvent = -1;
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for (int i = 0; i < EventControlIDs.Count; i++)
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{
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var area = i < EventTimes.Count ? GetEventIconArea(i) : _Area;
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if (area.Contains(currentGUIEvent.mousePosition))
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{
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selectedEventControlID = EventControlIDs[i];
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selectedEvent = i;
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break;
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}
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}
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GUIUtility.hotControl = GUIUtility.keyboardControl = selectedEventControlID;
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if (selectedEvent < 0 || selectedEvent >= EventTimes.Count)
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{
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SetPreviewTime(currentGUIEvent);
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selectedEvent = -1;
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}
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if (currentGUIEvent.type == EventType.MouseDown &&
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currentGUIEvent.clickCount == 2)
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{
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addEventNormalizedTime = PixelsToSeconds(currentGUIEvent.mousePosition.x);
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addEventNormalizedTime = SecondsToNormalized(addEventNormalizedTime);
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}
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else
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{
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addEventNormalizedTime = float.NaN;
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}
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context.SelectedEvent = selectedEvent;
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currentGUIEvent.Use();
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}
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/************************************************************************************************************************/
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private void SetPreviewTime(Event currentGUIEvent)
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{
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if (_Duration > 0)
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{
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var seconds = PixelsToSeconds(currentGUIEvent.mousePosition.x);
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TransitionPreviewWindow.SetPreviewNormalizedTime(seconds / _Duration);
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}
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}
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/************************************************************************************************************************/
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private Rect GetEventIconArea(int index)
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{
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var width = Styles.EventIcon.width;
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var x = SecondsToPixels(EventTimes[index]) - width * 0.5f;
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x = Mathf.Clamp(x, 0, _Area.width - width);
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return new Rect(x, _Area.y, width, Styles.EventIcon.height);
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}
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/************************************************************************************************************************/
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#endregion
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/************************************************************************************************************************/
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#region Ticks
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/************************************************************************************************************************/
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private const float TickHeight = 0.3f;
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private static readonly List<float> TickTimes = new List<float>();
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/// <summary>
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/// Draws ticks and labels for important times throughout the area.
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/// </summary>
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public void DoRulerGUI()
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{
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if (Event.current.type != EventType.Repaint)
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return;
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var tickHeight = _Area.height * TickHeight;
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var area = new Rect(SecondsToPixels(0), _Area.yMax - tickHeight, 0, tickHeight)
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{
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xMax = SecondsToPixels(_Duration)
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};
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EditorGUI.DrawRect(area, BaseTimeColor);
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TickTimes.Clear();
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TickTimes.Add(0);
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TickTimes.Add(_StartTime);
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TickTimes.Add(_FadeInEnd);
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TickTimes.Add(_Duration);
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for (int i = 0; i < EventTimes.Count; i++)
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TickTimes.Add(EventTimes[i]);
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TickTimes.Sort();
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var previousTime = float.NaN;
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area.x = float.NegativeInfinity;
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for (int i = 0; i < TickTimes.Count; i++)
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{
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var time = TickTimes[i];
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if (previousTime != time)
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{
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previousTime = time;
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DoRulerLabelGUI(ref area, time);
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}
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}
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var state = TransitionPreviewWindow.GetCurrentState();
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if (state != null)
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{
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var time = state.Time;
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DrawPreviewTime(time, 1);
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if (state.IsLooping)
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{
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while (time >= _MinTime + _Duration)
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time -= _Duration;
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while (time <= _MaxTime)
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{
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DrawPreviewTime(time, 0.25f);
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time += _Duration;
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}
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}
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}
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}
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/************************************************************************************************************************/
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private void DrawPreviewTime(float time, float alpha)
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{
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time = SecondsToPixels(time);
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if (time >= 0 && time <= _Area.width)
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{
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var color = PreviewTimeColor;
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color.a = alpha;
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EditorGUI.DrawRect(new Rect(time - 1, _Area.y, 2, _Area.height), color);
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}
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}
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/************************************************************************************************************************/
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private static ConversionCache<string, float> _TimeLabelWidthCache;
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||
|
|
||
|
private void DoRulerLabelGUI(ref Rect previousArea, float time)
|
||
|
{
|
||
|
var text = G2Cache.Convert(time);
|
||
|
|
||
|
if (_TimeLabelWidthCache == null)
|
||
|
_TimeLabelWidthCache = AnimancerGUI.CreateWidthCache(Styles.TimeLabel);
|
||
|
|
||
|
var area = new Rect(
|
||
|
SecondsToPixels(time),
|
||
|
_Area.y,
|
||
|
_TimeLabelWidthCache.Convert(text),
|
||
|
_Area.height);
|
||
|
|
||
|
if (area.x > _Area.x)
|
||
|
{
|
||
|
var tickHeight = _Area.height * TickHeight;
|
||
|
var tickY = _Area.yMax - tickHeight;
|
||
|
|
||
|
EditorGUI.DrawRect(new Rect(area.x, tickY, 1, tickHeight), AnimancerGUI.TextColor);
|
||
|
}
|
||
|
|
||
|
if (area.xMax > _Area.xMax)
|
||
|
area.x = _Area.xMax - area.width;
|
||
|
if (area.x < 0)
|
||
|
area.x = 0;
|
||
|
|
||
|
if (area.x > previousArea.xMax + 2)
|
||
|
{
|
||
|
GUI.Label(area, text, Styles.TimeLabel);
|
||
|
|
||
|
previousArea = area;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/************************************************************************************************************************/
|
||
|
|
||
|
private static class Styles
|
||
|
{
|
||
|
public static readonly GUIStyle TimeLabel = new GUIStyle(GUI.skin.label)
|
||
|
{
|
||
|
padding = new RectOffset(),
|
||
|
contentOffset = new Vector2(0, -2),
|
||
|
alignment = TextAnchor.UpperLeft,
|
||
|
fontSize = Mathf.CeilToInt(AnimancerGUI.LineHeight * 0.6f),
|
||
|
};
|
||
|
|
||
|
public static readonly Texture EventIcon = EditorGUIUtility.IconContent("Animation.EventMarker").image;
|
||
|
}
|
||
|
|
||
|
/************************************************************************************************************************/
|
||
|
#endregion
|
||
|
/************************************************************************************************************************/
|
||
|
}
|
||
|
}
|
||
|
|
||
|
#endif
|
||
|
|