private static void DragSustainValue(Rect rect, SerializedProperty property)
{
Event evt = Event.current;
int id = GUIUtility.GetControlID(sustainHash, FocusType.Passive, rect);
switch (evt.GetTypeForControl(id))
{
case EventType.MouseDown:
if (rect.Contains(evt.mousePosition) && evt.button == 0)
{
GUIUtility.hotControl = id;
dragStartValue = property.FindPropertyRelative(nameof(Envelope.sustainValue)).floatValue;
}
break;
case EventType.MouseUp:
if (GUIUtility.hotControl == id)
{
GUIUtility.hotControl = 0;
}
break;
case EventType.KeyDown:
if (GUIUtility.hotControl == id && evt.keyCode == KeyCode.Escape)
{
SerializedEnvelopeHelpers.UpdateSustainValue(property, dragStartValue);
GUI.changed = true;
GUIUtility.hotControl = 0;
evt.Use();
}
break;
case EventType.Repaint:
EditorGUIUtility.AddCursorRect(rect, MouseCursor.ResizeVertical);
break;
}
if (evt.isMouse && GUIUtility.hotControl == id)
{
float relativeY = evt.mousePosition.y - rect.y;
float value = Mathf.Clamp01(1 - (relativeY / rect.height));
SerializedEnvelopeHelpers.UpdateSustainValue(property, value);
GUI.changed = true;
Event.current.Use();
}
}
static void DrawSustainValue(Rect rect, SerializedProperty prop)
{
float gap = 12;
float checkboxWidth = 64;
Rect valueRect = rect;
valueRect.width = rect.width - checkboxWidth - gap;
EditorGUI.BeginChangeCheck();
SerializedProperty sustainValueProp = prop.FindPropertyRelative(nameof(Envelope.sustainValue));
EditorGUI.PropertyField(valueRect, sustainValueProp);
if (EditorGUI.EndChangeCheck())
{
float safeValue = Mathf.Clamp01(sustainValueProp.floatValue);
SerializedEnvelopeHelpers.UpdateSustainValue(prop, safeValue);
}
Rect checkboxRect = rect;
checkboxRect.width = checkboxWidth;
checkboxRect.x = valueRect.xMax + gap;
var label = new GUIContent("Hold");
SerializedProperty holdSustainProp = prop.FindPropertyRelative(nameof(Envelope.holdSustain));
Rect checkboxLabelRect = checkboxRect;
EditorGUI.BeginProperty(rect, label, holdSustainProp);
EditorGUI.LabelField(checkboxLabelRect, label);
EditorGUI.EndProperty();
Rect checkboxValueRect = checkboxRect;
checkboxValueRect.width *= 0.4f;
checkboxValueRect.x = rect.xMax - 16;
EditorGUI.PropertyField(checkboxValueRect, holdSustainProp, GUIContent.none);
}