648 lines
27 KiB
C#
648 lines
27 KiB
C#
// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2023 Kybernetik //
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#if UNITY_EDITOR
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using System;
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using System.Collections;
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using System.Runtime.CompilerServices;
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using UnityEditor;
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using UnityEngine;
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using Object = UnityEngine.Object;
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namespace Animancer.Editor
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{
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/// <summary>[Editor-Only] Various GUI utilities used throughout Animancer.</summary>
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/// https://kybernetik.com.au/animancer/api/Animancer.Editor/AnimancerGUI
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///
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public static class AnimancerGUI
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{
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/************************************************************************************************************************/
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#region Standard Values
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/************************************************************************************************************************/
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/// <summary>The highlight color used for fields showing a warning.</summary>
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public static readonly Color
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WarningFieldColor = new Color(1, 0.9f, 0.6f);
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/// <summary>The highlight color used for fields showing an error.</summary>
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public static readonly Color
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ErrorFieldColor = new Color(1, 0.6f, 0.6f);
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/************************************************************************************************************************/
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/// <summary><see cref="GUILayout.ExpandWidth"/> set to false.</summary>
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public static readonly GUILayoutOption[]
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DontExpandWidth = { GUILayout.ExpandWidth(false) };
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/************************************************************************************************************************/
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/// <summary>Returns <see cref="EditorGUIUtility.singleLineHeight"/>.</summary>
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public static float LineHeight => EditorGUIUtility.singleLineHeight;
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/************************************************************************************************************************/
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/// <summary>Returns <see cref="EditorGUIUtility.standardVerticalSpacing"/>.</summary>
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public static float StandardSpacing => EditorGUIUtility.standardVerticalSpacing;
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/************************************************************************************************************************/
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private static float _IndentSize = -1;
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/// <summary>
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/// The number of pixels of indentation for each <see cref="EditorGUI.indentLevel"/> increment.
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/// </summary>
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public static float IndentSize
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{
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get
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{
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if (_IndentSize < 0)
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{
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var indentLevel = EditorGUI.indentLevel;
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EditorGUI.indentLevel = 1;
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_IndentSize = EditorGUI.IndentedRect(new Rect()).x;
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EditorGUI.indentLevel = indentLevel;
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}
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return _IndentSize;
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}
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}
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/************************************************************************************************************************/
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private static float _ToggleWidth = -1;
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/// <summary>The width of a standard <see cref="GUISkin.toggle"/> with no label.</summary>
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public static float ToggleWidth
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{
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get
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{
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if (_ToggleWidth == -1)
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_ToggleWidth = GUI.skin.toggle.CalculateWidth(GUIContent.none);
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return _ToggleWidth;
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}
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}
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/************************************************************************************************************************/
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/// <summary>The color of the standard label text.</summary>
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public static Color TextColor => GUI.skin.label.normal.textColor;
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/************************************************************************************************************************/
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private static GUIStyle _MiniButton;
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/// <summary>A more compact <see cref="EditorStyles.miniButton"/> with a fixed size as a tiny box.</summary>
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public static GUIStyle MiniButton
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{
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get
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{
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if (_MiniButton == null)
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{
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_MiniButton = new GUIStyle(EditorStyles.miniButton)
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{
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margin = new RectOffset(0, 0, 2, 0),
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padding = new RectOffset(2, 3, 2, 2),
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alignment = TextAnchor.MiddleCenter,
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fixedHeight = LineHeight,
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fixedWidth = LineHeight - 1
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};
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}
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return _MiniButton;
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}
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}
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/************************************************************************************************************************/
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#endregion
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/************************************************************************************************************************/
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#region Layout
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/************************************************************************************************************************/
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/// <summary>Calls <see cref="UnityEditorInternal.InternalEditorUtility.RepaintAllViews"/>.</summary>
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public static void RepaintEverything()
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=> UnityEditorInternal.InternalEditorUtility.RepaintAllViews();
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/************************************************************************************************************************/
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/// <summary>Indicates where <see cref="LayoutSingleLineRect"/> should add the <see cref="StandardSpacing"/>.</summary>
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public enum SpacingMode
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{
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/// <summary>No extra space.</summary>
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None,
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/// <summary>Add extra space before the new area.</summary>
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Before,
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/// <summary>Add extra space after the new area.</summary>
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After,
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/// <summary>Add extra space before and after the new area.</summary>
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BeforeAndAfter
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}
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/// <summary>
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/// Uses <see cref="GUILayoutUtility.GetRect(float, float)"/> to get a <see cref="Rect"/> occupying a single
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/// standard line with the <see cref="StandardSpacing"/> added according to the specified `spacing`.
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/// </summary>
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public static Rect LayoutSingleLineRect(SpacingMode spacing = SpacingMode.None)
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{
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Rect rect;
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switch (spacing)
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{
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case SpacingMode.None:
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return GUILayoutUtility.GetRect(0, LineHeight);
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case SpacingMode.Before:
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rect = GUILayoutUtility.GetRect(0, LineHeight + StandardSpacing);
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rect.yMin += StandardSpacing;
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return rect;
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case SpacingMode.After:
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rect = GUILayoutUtility.GetRect(0, LineHeight + StandardSpacing);
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rect.height -= StandardSpacing;
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return rect;
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case SpacingMode.BeforeAndAfter:
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rect = GUILayoutUtility.GetRect(0, LineHeight + StandardSpacing * 2);
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rect.yMin += StandardSpacing;
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rect.height -= StandardSpacing;
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return rect;
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default:
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throw new ArgumentException($"Unsupported {nameof(StandardSpacing)}: " + spacing, nameof(spacing));
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}
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}
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/************************************************************************************************************************/
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/// <summary>
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/// If the <see cref="Rect.height"/> is positive, this method moves the <see cref="Rect.y"/> by that amount and
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/// adds the <see cref="EditorGUIUtility.standardVerticalSpacing"/>.
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/// </summary>
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public static void NextVerticalArea(ref Rect area)
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{
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if (area.height > 0)
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area.y += area.height + StandardSpacing;
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}
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/************************************************************************************************************************/
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/// <summary>
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/// Subtracts the `width` from the left side of the `area` and returns a new <see cref="Rect"/> occupying the
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/// removed section.
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/// </summary>
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public static Rect StealFromLeft(ref Rect area, float width, float padding = 0)
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{
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var newRect = new Rect(area.x, area.y, width, area.height);
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area.xMin += width + padding;
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return newRect;
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}
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/// <summary>
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/// Subtracts the `width` from the right side of the `area` and returns a new <see cref="Rect"/> occupying the
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/// removed section.
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/// </summary>
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public static Rect StealFromRight(ref Rect area, float width, float padding = 0)
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{
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area.width -= width + padding;
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return new Rect(area.xMax + padding, area.y, width, area.height);
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}
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/************************************************************************************************************************/
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/// <summary>
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/// Divides the given `area` such that the fields associated with both labels will have equal space
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/// remaining after the labels themselves.
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/// </summary>
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public static void SplitHorizontally(Rect area, string label0, string label1,
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out float width0, out float width1, out Rect rect0, out Rect rect1)
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{
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width0 = CalculateLabelWidth(label0);
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width1 = CalculateLabelWidth(label1);
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const float Padding = 1;
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rect0 = rect1 = area;
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var remainingWidth = area.width - width0 - width1 - Padding;
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rect0.width = width0 + remainingWidth * 0.5f;
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rect1.xMin = rect0.xMax + Padding;
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}
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/************************************************************************************************************************/
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/// <summary>[Animancer Extension] Calls <see cref="GUIStyle.CalcMinMaxWidth"/> and returns the max width.</summary>
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public static float CalculateWidth(this GUIStyle style, GUIContent content)
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{
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style.CalcMinMaxWidth(content, out _, out var width);
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return Mathf.Ceil(width);
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}
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/// <summary>[Animancer Extension] Calls <see cref="GUIStyle.CalcMinMaxWidth"/> and returns the max width.</summary>
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public static float CalculateWidth(this GUIStyle style, string text)
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{
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using (ObjectPool.Disposable.AcquireContent(out var content, text, null, false))
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return style.CalculateWidth(content);
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}
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/************************************************************************************************************************/
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/// <summary>
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/// Creates a <see cref="ConversionCache{TKey, TValue}"/> for calculating the GUI width occupied by text using the
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/// specified `style`.
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/// </summary>
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public static ConversionCache<string, float> CreateWidthCache(GUIStyle style)
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=> new ConversionCache<string, float>((text) => style.CalculateWidth(text));
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/************************************************************************************************************************/
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private static ConversionCache<string, float> _LabelWidthCache;
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/// <summary>
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/// Calls <see cref="GUIStyle.CalcMinMaxWidth"/> using <see cref="GUISkin.label"/> and returns the max
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/// width. The result is cached for efficient reuse.
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/// </summary>
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public static float CalculateLabelWidth(string text)
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{
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if (_LabelWidthCache == null)
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_LabelWidthCache = CreateWidthCache(GUI.skin.label);
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return _LabelWidthCache.Convert(text);
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}
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/************************************************************************************************************************/
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/// <summary>
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/// Begins a vertical layout group using the given style and decreases the
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/// <see cref="EditorGUIUtility.labelWidth"/> to compensate for the indentation.
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/// </summary>
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public static void BeginVerticalBox(GUIStyle style)
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{
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if (style == null)
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{
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GUILayout.BeginVertical();
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return;
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}
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GUILayout.BeginVertical(style);
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EditorGUIUtility.labelWidth -= style.padding.left;
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}
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/// <summary>
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/// Ends a layout group started by <see cref="BeginVerticalBox"/> and restores the
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/// <see cref="EditorGUIUtility.labelWidth"/>.
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/// </summary>
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public static void EndVerticalBox(GUIStyle style)
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{
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if (style != null)
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EditorGUIUtility.labelWidth += style.padding.left;
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GUILayout.EndVertical();
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}
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/************************************************************************************************************************/
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/// <summary>Clears the <see cref="Selection.objects"/> then returns it to its current state.</summary>
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/// <remarks>
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/// This forces the <see cref="UnityEditorInternal.ReorderableList"/> drawer to adjust to height changes which
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/// it unfortunately doesn't do on its own..
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/// </remarks>
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public static void ReSelectCurrentObjects()
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{
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var selection = Selection.objects;
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Selection.objects = Array.Empty<Object>();
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EditorApplication.delayCall += () =>
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EditorApplication.delayCall += () =>
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Selection.objects = selection;
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}
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/************************************************************************************************************************/
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#endregion
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/************************************************************************************************************************/
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#region Labels
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/************************************************************************************************************************/
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private static GUIStyle _WeightLabelStyle;
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private static float _WeightLabelWidth = -1;
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/// <summary>
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/// Draws a label showing the `weight` aligned to the right side of the `area` and reduces its
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/// <see cref="Rect.width"/> to remove that label from its area.
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/// </summary>
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public static void DoWeightLabel(ref Rect area, float weight)
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{
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var label = WeightToShortString(weight, out var isExact);
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if (_WeightLabelStyle == null)
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_WeightLabelStyle = new GUIStyle(GUI.skin.label);
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if (_WeightLabelWidth < 0)
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{
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_WeightLabelStyle.fontStyle = FontStyle.Italic;
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_WeightLabelWidth = _WeightLabelStyle.CalculateWidth("0.0");
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}
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_WeightLabelStyle.normal.textColor = Color.Lerp(Color.grey, TextColor, weight);
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_WeightLabelStyle.fontStyle = isExact ? FontStyle.Normal : FontStyle.Italic;
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var weightArea = StealFromRight(ref area, _WeightLabelWidth);
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GUI.Label(weightArea, label, _WeightLabelStyle);
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}
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/************************************************************************************************************************/
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private static ConversionCache<float, string> _ShortWeightCache;
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/// <summary>Returns a string which approximates the `weight` into no more than 3 digits.</summary>
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private static string WeightToShortString(float weight, out bool isExact)
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{
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isExact = true;
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if (weight == 0)
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return "0.0";
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if (weight == 1)
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return "1.0";
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isExact = false;
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if (weight >= -0.5f && weight < 0.05f)
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return "~0.";
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if (weight >= 0.95f && weight < 1.05f)
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return "~1.";
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if (weight <= -99.5f)
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return "-??";
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if (weight >= 999.5f)
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return "???";
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if (_ShortWeightCache == null)
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_ShortWeightCache = new ConversionCache<float, string>((value) =>
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{
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if (value < -9.5f) return $"{value:F0}";
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if (value < -0.5f) return $"{value:F0}.";
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if (value < 9.5f) return $"{value:F1}";
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if (value < 99.5f) return $"{value:F0}.";
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return $"{value:F0}";
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});
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var rounded = weight > 0 ? Mathf.Floor(weight * 10) : Mathf.Ceil(weight * 10);
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isExact = Mathf.Approximately(weight * 10, rounded);
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return _ShortWeightCache.Convert(weight);
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}
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/************************************************************************************************************************/
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/// <summary>The <see cref="EditorGUIUtility.labelWidth"/> from before <see cref="BeginTightLabel"/>.</summary>
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private static float _TightLabelWidth;
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/// <summary>Stores the <see cref="EditorGUIUtility.labelWidth"/> and changes it to the exact width of the `label`.</summary>
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public static string BeginTightLabel(string label)
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{
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_TightLabelWidth = EditorGUIUtility.labelWidth;
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EditorGUIUtility.labelWidth = CalculateLabelWidth(label) + EditorGUI.indentLevel * IndentSize;
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return GetNarrowText(label);
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}
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/// <summary>Reverts <see cref="EditorGUIUtility.labelWidth"/> to its previous value.</summary>
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public static void EndTightLabel()
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{
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EditorGUIUtility.labelWidth = _TightLabelWidth;
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}
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/************************************************************************************************************************/
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private static ConversionCache<string, string> _NarrowTextCache;
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/// <summary>
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/// Returns the `text` without any spaces if <see cref="EditorGUIUtility.wideMode"/> is false.
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/// Otherwise simply returns the `text` without any changes.
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/// </summary>
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public static string GetNarrowText(string text)
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{
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if (EditorGUIUtility.wideMode ||
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string.IsNullOrEmpty(text))
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return text;
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if (_NarrowTextCache == null)
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_NarrowTextCache = new ConversionCache<string, string>((str) => str.Replace(" ", ""));
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return _NarrowTextCache.Convert(text);
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}
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/************************************************************************************************************************/
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/// <summary>Loads an icon texture and sets it to use <see cref="FilterMode.Bilinear"/>.</summary>
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public static Texture LoadIcon(string name)
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{
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var icon = (Texture)EditorGUIUtility.Load(name);
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if (icon != null)
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icon.filterMode = FilterMode.Bilinear;
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return icon;
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}
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/************************************************************************************************************************/
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/// <summary>Calls <see cref="EditorGUIUtility.IconContent(string)"/> if the `content` was null.</summary>
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public static GUIContent IconContent(ref GUIContent content, string name)
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{
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if (content == null)
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content = EditorGUIUtility.IconContent(name);
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return content;
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}
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/************************************************************************************************************************/
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/// <summary>Draws a button using <see cref="EditorStyles.miniButton"/> and <see cref="DontExpandWidth"/>.</summary>
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public static bool CompactMiniButton(GUIContent content)
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=> GUILayout.Button(content, EditorStyles.miniButton, DontExpandWidth);
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/// <summary>Draws a button using <see cref="EditorStyles.miniButton"/>.</summary>
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public static bool CompactMiniButton(Rect area, GUIContent content)
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=> GUI.Button(area, content, EditorStyles.miniButton);
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/************************************************************************************************************************/
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private static GUIContent
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_PlayButtonContent,
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_PauseButtonContent,
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_StepBackwardButtonContent,
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_StepForwardButtonContent;
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/// <summary><see cref="IconContent(ref GUIContent, string)"/> for a play button.</summary>
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public static GUIContent PlayButtonContent
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=> IconContent(ref _PlayButtonContent, "PlayButton");
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/// <summary><see cref="IconContent(ref GUIContent, string)"/> for a pause button.</summary>
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public static GUIContent PauseButtonContent
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=> IconContent(ref _PauseButtonContent, "PauseButton");
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/// <summary><see cref="IconContent(ref GUIContent, string)"/> for a step backward button.</summary>
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public static GUIContent StepBackwardButtonContent
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=> IconContent(ref _StepBackwardButtonContent, "Animation.PrevKey");
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/// <summary><see cref="IconContent(ref GUIContent, string)"/> for a step forward button.</summary>
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public static GUIContent StepForwardButtonContent
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=> IconContent(ref _StepForwardButtonContent, "Animation.NextKey");
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/************************************************************************************************************************/
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private static float _PlayButtonWidth;
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/// <summary>The default width of <see cref="PlayButtonContent"/> using <see cref="EditorStyles.miniButton"/>.</summary>
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public static float PlayButtonWidth
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{
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get
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{
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if (_PlayButtonWidth <= 0)
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EditorStyles.miniButton.CalcMinMaxWidth(PlayButtonContent, out _PlayButtonWidth, out _);
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return _PlayButtonWidth;
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}
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}
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/************************************************************************************************************************/
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#endregion
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/************************************************************************************************************************/
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#region Events
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/************************************************************************************************************************/
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/// <summary>
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/// Returns true and uses the current event if it is <see cref="EventType.MouseUp"/> inside the specified
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/// `area`.
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/// </summary>
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public static bool TryUseClickEvent(Rect area, int button = -1)
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{
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var currentEvent = Event.current;
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if (currentEvent.type != EventType.MouseUp ||
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(button >= 0 && currentEvent.button != button) ||
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!area.Contains(currentEvent.mousePosition))
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return false;
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GUI.changed = true;
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currentEvent.Use();
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if (currentEvent.button == 2)
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Deselect();
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return true;
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}
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/// <summary>
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/// Returns true and uses the current event if it is <see cref="EventType.MouseUp"/> inside the last GUI Layout
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/// <see cref="Rect"/> that was drawn.
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/// </summary>
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public static bool TryUseClickEventInLastRect(int button = -1)
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=> TryUseClickEvent(GUILayoutUtility.GetLastRect(), button);
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|
|
|
/************************************************************************************************************************/
|
|
|
|
/// <summary>
|
|
/// Invokes `onDrop` if the <see cref="Event.current"/> is a drag and drop event inside the `dropArea`.
|
|
/// </summary>
|
|
public static void HandleDragAndDrop<T>(Rect dropArea, Func<T, bool> validate, Action<T> onDrop,
|
|
DragAndDropVisualMode mode = DragAndDropVisualMode.Link) where T : class
|
|
{
|
|
if (!dropArea.Contains(Event.current.mousePosition))
|
|
return;
|
|
|
|
bool isDrop;
|
|
switch (Event.current.type)
|
|
{
|
|
case EventType.DragUpdated:
|
|
isDrop = false;
|
|
break;
|
|
|
|
case EventType.DragPerform:
|
|
isDrop = true;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
TryDrop(DragAndDrop.objectReferences, validate, onDrop, isDrop, mode);
|
|
}
|
|
|
|
/************************************************************************************************************************/
|
|
|
|
/// <summary>
|
|
/// Updates the <see cref="DragAndDrop.visualMode"/> or calls `onDrop` for each of the `objects`.
|
|
/// </summary>
|
|
private static void TryDrop<T>(IEnumerable objects, Func<T, bool> validate, Action<T> onDrop, bool isDrop,
|
|
DragAndDropVisualMode mode) where T : class
|
|
{
|
|
if (objects == null)
|
|
return;
|
|
|
|
var droppedAny = false;
|
|
|
|
foreach (var obj in objects)
|
|
{
|
|
var t = obj as T;
|
|
|
|
if (t != null && (validate == null || validate(t)))
|
|
{
|
|
Deselect();
|
|
|
|
if (!isDrop)
|
|
{
|
|
DragAndDrop.visualMode = mode;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
onDrop(t);
|
|
droppedAny = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (droppedAny)
|
|
GUIUtility.ExitGUI();
|
|
}
|
|
|
|
/************************************************************************************************************************/
|
|
|
|
/// <summary>
|
|
/// Uses <see cref="HandleDragAndDrop"/> to deal with drag and drop operations involving
|
|
/// <see cref="AnimationClip"/>s of <see cref="IAnimationClipSource"/>s.
|
|
/// </summary>
|
|
public static void HandleDragAndDropAnimations(Rect dropArea, Action<AnimationClip> onDrop,
|
|
DragAndDropVisualMode mode = DragAndDropVisualMode.Link)
|
|
{
|
|
HandleDragAndDrop(dropArea, (clip) => !clip.legacy, onDrop, mode);
|
|
|
|
HandleDragAndDrop<IAnimationClipSource>(dropArea, null, (source) =>
|
|
{
|
|
using (ObjectPool.Disposable.AcquireList<AnimationClip>(out var clips))
|
|
{
|
|
source.GetAnimationClips(clips);
|
|
TryDrop(clips, (clip) => !clip.legacy, onDrop, true, mode);
|
|
}
|
|
}, mode);
|
|
|
|
HandleDragAndDrop<IAnimationClipCollection>(dropArea, null, (collection) =>
|
|
{
|
|
using (ObjectPool.Disposable.AcquireSet<AnimationClip>(out var clips))
|
|
{
|
|
collection.GatherAnimationClips(clips);
|
|
TryDrop(clips, (clip) => !clip.legacy, onDrop, true, mode);
|
|
}
|
|
}, mode);
|
|
}
|
|
|
|
/************************************************************************************************************************/
|
|
|
|
/// <summary>Deselects any selected IMGUI control.</summary>
|
|
public static void Deselect() => GUIUtility.keyboardControl = 0;
|
|
|
|
/************************************************************************************************************************/
|
|
#endregion
|
|
/************************************************************************************************************************/
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|