[unity] Better animation inspector preview event tooltips. (#1122)

* animation event tips modified
* [unity] Format new tooltip code.

spine-unity/Assets/spine-unity/Editor/SkeletonDataAssetInspector.cs

@@ -682,6 +682,7 @@ namespace Spine.Unity.Editor {
 
 		List<Spine.Event> currentAnimationEvents = new List<Spine.Event>();
 		List<float> currentAnimationEventTimes = new List<float>();
+		List<SpineEventTooltip> currentAnimationEventTooltips = new List<SpineEventTooltip>();
 
 		public bool IsValid { get { return skeletonAnimation != null && skeletonAnimation.valid; } }
 
@@ -1071,7 +1072,7 @@ namespace Spine.Unity.Editor {
 				int loopCount = (int)(t.TrackTime / t.TrackEnd);
 				float currentTime = t.TrackTime - (t.TrackEnd * loopCount);
 				float normalizedTime = currentTime / t.Animation.Duration;
-				float wrappedTime = normalizedTime % 1;
+				float wrappedTime = normalizedTime % 1f;
 
 				lineRect.x = barRect.x + (lineRectWidth * wrappedTime) - 0.5f;
 				lineRect.width = 2;
@@ -1080,11 +1081,13 @@ namespace Spine.Unity.Editor {
 				GUI.DrawTexture(lineRect, EditorGUIUtility.whiteTexture);
 				GUI.color = Color.white;
 
+				currentAnimationEventTooltips = currentAnimationEventTooltips ?? new List<SpineEventTooltip>();
+				currentAnimationEventTooltips.Clear();
 				for (int i = 0; i < currentAnimationEvents.Count; i++) {
-					float fr = currentAnimationEventTimes[i];
+					float eventTime = currentAnimationEventTimes[i];
 					var userEventIcon = Icons.userEvent;
 					var evRect = new Rect(barRect) {
-						x = Mathf.Clamp(((fr / t.Animation.Duration) * lineRectWidth) - (userEventIcon.width / 2), barRect.x, float.MaxValue),
+						x = Mathf.Max(((eventTime / t.Animation.Duration) * lineRectWidth) - (userEventIcon.width / 2), barRect.x),
 						y = barRect.y + userEventIcon.height,
 						width = userEventIcon.width,
 						height = userEventIcon.height
@@ -1094,16 +1097,29 @@ namespace Spine.Unity.Editor {
 					Event ev = Event.current;
 					if (ev.type == EventType.Repaint) {
 						if (evRect.Contains(ev.mousePosition)) {
-							GUIStyle tooltipStyle = EditorStyles.helpBox;
-							Rect tooltipRect = new Rect(evRect);
-							tooltipRect.width = tooltipStyle.CalcSize(new GUIContent(currentAnimationEvents[i].Data.Name)).x;
+							string eventName = currentAnimationEvents[i].Data.Name;
+							Rect tooltipRect = new Rect(evRect) {
+								width = EditorStyles.helpBox.CalcSize(new GUIContent(eventName)).x
+							};
 							tooltipRect.y -= 4;
+							tooltipRect.y -= tooltipRect.height * currentAnimationEventTooltips.Count; // Avoid several overlapping tooltips.
 							tooltipRect.x += 4;
-							GUI.Label(tooltipRect,  currentAnimationEvents[i].Data.Name, tooltipStyle);
-							GUI.tooltip = currentAnimationEvents[i].Data.Name;
+
+							// Handle tooltip overflowing to the right.
+							float rightEdgeOverflow = (tooltipRect.x + tooltipRect.width) - (barRect.x + barRect.width);
+							if (rightEdgeOverflow > 0)
+								tooltipRect.x -= rightEdgeOverflow;
+
+							currentAnimationEventTooltips.Add(new SpineEventTooltip { rect = tooltipRect, text = eventName });
 						}
 					}
 				}
+
+				// Draw tooltips.
+				for (int i = 0; i < currentAnimationEventTooltips.Count; i++) {
+					GUI.Label(currentAnimationEventTooltips[i].rect, currentAnimationEventTooltips[i].text, EditorStyles.helpBox);
+					GUI.tooltip = currentAnimationEventTooltips[i].text;
+				}
 			}
 		}
 
@@ -1130,7 +1146,11 @@ namespace Spine.Unity.Editor {
 				previewGameObject = null;
 			}
 		}
-	}
 
+		internal struct SpineEventTooltip {
+			public Rect rect;
+			public string text;
+		}
+	}
 
 }