File size: 6,662 Bytes
18a519f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 | using System;
using System.Collections.Generic;
using System.Linq;
using UnityEditor;
using UnityEngine;
namespace Unity.VisualScripting
{
[Widget(typeof(FlowState))]
public sealed class FlowStateWidget : NesterStateWidget<FlowState>, IDragAndDropHandler
{
public FlowStateWidget(StateCanvas canvas, FlowState state) : base(canvas, state)
{
state.nest.beforeGraphChange += BeforeGraphChange;
state.nest.afterGraphChange += AfterGraphChange;
if (state.nest.graph != null)
{
state.nest.graph.elements.CollectionChanged += CacheEventLinesOnUnityThread;
}
}
public override void Dispose()
{
base.Dispose();
state.nest.beforeGraphChange -= BeforeGraphChange;
state.nest.afterGraphChange -= AfterGraphChange;
}
private void BeforeGraphChange()
{
if (state.nest.graph != null)
{
state.nest.graph.elements.CollectionChanged -= CacheEventLinesOnUnityThread;
}
}
private void AfterGraphChange()
{
CacheEventLinesOnUnityThread();
if (state.nest.graph != null)
{
state.nest.graph.elements.CollectionChanged += CacheEventLinesOnUnityThread;
}
}
#region Model
private List<EventLine> eventLines { get; } = new List<EventLine>();
private void CacheEventLinesOnUnityThread()
{
UnityAPI.Async(CacheEventLines);
}
private void CacheEventLines()
{
eventLines.Clear();
if (state.nest.graph != null)
{
eventLines.AddRange(state.nest.graph.units
.OfType<IEventUnit>()
.Select(e => e.GetType())
.Distinct()
.Select(eventType => new EventLine(eventType))
.OrderBy(eventLine => eventLine.content.text));
}
Reposition();
}
protected override void CacheItemFirstTime()
{
base.CacheItemFirstTime();
CacheEventLines();
}
#endregion
#region Positioning
public Dictionary<EventLine, Rect> eventLinesPositions { get; } = new Dictionary<EventLine, Rect>();
public override void CachePosition()
{
base.CachePosition();
eventLinesPositions.Clear();
var y = contentInnerPosition.y;
foreach (var eventLine in eventLines)
{
var eventLinePosition = new Rect
(
contentInnerPosition.x,
y,
contentInnerPosition.width,
eventLine.GetHeight(contentInnerPosition.width)
);
eventLinesPositions.Add(eventLine, eventLinePosition);
y += eventLinePosition.height;
}
}
protected override float GetContentHeight(float width)
{
var eventLinesHeight = 0f;
foreach (var eventLine in eventLines)
{
eventLinesHeight += eventLine.GetHeight(width);
}
return eventLinesHeight;
}
#endregion
#region Drawing
protected override bool showContent => eventLines.Count > 0;
protected override void DrawContent()
{
foreach (var eventLine in eventLines)
{
eventLine.Draw(eventLinesPositions[eventLine]);
}
}
#endregion
#region Drag & Drop
public DragAndDropVisualMode dragAndDropVisualMode => DragAndDropVisualMode.Generic;
public bool AcceptsDragAndDrop()
{
return DragAndDropUtility.Is<ScriptGraphAsset>();
}
public void PerformDragAndDrop()
{
UndoUtility.RecordEditedObject("Drag & Drop Macro");
state.nest.source = GraphSource.Macro;
state.nest.macro = DragAndDropUtility.Get<ScriptGraphAsset>();
state.nest.embed = null;
GUI.changed = true;
}
public void UpdateDragAndDrop() { }
public void DrawDragAndDropPreview()
{
GraphGUI.DrawDragAndDropPreviewLabel(new Vector2(edgePosition.x, outerPosition.yMax), "Replace with: " + DragAndDropUtility.Get<ScriptGraphAsset>().name, typeof(ScriptGraphAsset).Icon());
}
public void ExitDragAndDrop() { }
#endregion
public new static class Styles
{
static Styles()
{
eventLine = new GUIStyle(EditorStyles.label);
eventLine.wordWrap = true;
eventLine.imagePosition = ImagePosition.TextOnly; // The icon is drawn manually
eventLine.padding = new RectOffset(0, 0, 3, 3);
}
public static readonly GUIStyle eventLine;
public static readonly float spaceAroundLineIcon = 5;
}
public class EventLine
{
public EventLine(Type eventType)
{
content = new GUIContent(BoltFlowNameUtility.UnitTitle(eventType, false, true), eventType.Icon()?[IconSize.Small]);
}
public GUIContent content { get; }
public float GetHeight(float width)
{
var labelWidth = width - Styles.spaceAroundLineIcon - IconSize.Small - Styles.spaceAroundLineIcon;
return Styles.eventLine.CalcHeight(content, labelWidth);
}
public void Draw(Rect position)
{
var iconPosition = new Rect
(
position.x + Styles.spaceAroundLineIcon,
position.y + Styles.eventLine.padding.top - 1,
IconSize.Small,
IconSize.Small
);
var labelPosition = new Rect
(
iconPosition.xMax + Styles.spaceAroundLineIcon,
position.y,
position.width - Styles.spaceAroundLineIcon - iconPosition.width - Styles.spaceAroundLineIcon,
position.height
);
if (content.image != null)
{
GUI.DrawTexture(iconPosition, content.image);
}
GUI.Label(labelPosition, content, Styles.eventLine);
}
}
}
}
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