/************************************************************************************************************************/
/// <summary>
/// Sets the `area` in which the ruler will be drawn and draws a <see cref="GUI.Box(Rect, string)"/> there.
/// The returned object must have <see cref="IDisposable.Dispose"/> called on it afterwards.
/// </summary>
private static IDisposable BeginGUI(Rect area)
{
if (Current != null)
{
throw new InvalidOperationException($"{nameof(TimelineGUI)} can't be used recursively.");
}
if (!EditorGUIUtility.hierarchyMode)
{
EditorGUI.indentLevel++;
}
area = EditorGUI.IndentedRect(area);
if (!EditorGUIUtility.hierarchyMode)
{
EditorGUI.indentLevel--;
}
GUI.Box(area, "");
GUI.BeginClip(area);
area.x = area.y = 0;
Instance._Area = area;
Instance.TickHeight = Mathf.Ceil(area.height * 0.3f);
return(Current = Instance);
}
/************************************************************************************************************************/
private void DoHeaderGUI(ref Rect area, GUIContent label, Context context)
{
area.height = AnimancerGUI.LineHeight;
var headerArea = area;
AnimancerGUI.NextVerticalArea(ref area);
label = EditorGUI.BeginProperty(headerArea, label, context.Property);
if (!context.Property.hasMultipleDifferentValues)
{
var addEventArea = AnimancerGUI.StealFromRight(ref headerArea, headerArea.height, AnimancerGUI.StandardSpacing);
DoAddRemoveEventButtonGUI(addEventArea, context);
}
if (context.TransitionContext != null && context.TransitionContext.Transition != null)
{
EditorGUI.EndProperty();
TimelineGUI.DoGUI(headerArea, context, out var addEventNormalizedTime);
if (!float.IsNaN(addEventNormalizedTime))
{
AddEvent(context, addEventNormalizedTime);
}
}
else
{
label.text = AnimancerGUI.GetNarrowText(label.text);
string summary;
if (context.Times.Count == 0)
{
summary = "[0] End Time 1";
}
else
{
var index = context.Times.Count - 1;
var endTime = context.Times.GetElement(index).floatValue;
summary = $"[{index}] End Time {endTime:G3}";
}
using (ObjectPool.Disposable.AcquireContent(out var content, summary))
EditorGUI.LabelField(headerArea, label, content);
EditorGUI.EndProperty();
}
EditorGUI.BeginChangeCheck();
context.Property.isExpanded =
EditorGUI.Foldout(headerArea, context.Property.isExpanded, GUIContent.none, true);
if (EditorGUI.EndChangeCheck())
{
context.SelectedEvent = -1;
}
}
/// <summary>Ends the area started by <see cref="BeginGUI"/>.</summary>
void IDisposable.Dispose()
{
Current = null;
GUI.EndClip();
}