private static void processDragAndDrop(ISupportDragAndDrop dragAndDropSupport,
ref Rect r, SerializedProperty property)
{
Event curEvent = Event.current;
Rect dropArea = dragAndDropSupport.GetDropArea(r, property);
switch (curEvent.type)
{
case EventType.Repaint:
case EventType.DragUpdated:
case EventType.DragPerform:
if (!dropArea.Contains(curEvent.mousePosition, allowInverse: true))
{
break;
}
bool isValidDrop = dragAndDropSupport.IsDropValid(
DragAndDrop.objectReferences, property);
if (isValidDrop)
{
DragAndDrop.visualMode = DragAndDropVisualMode.Link;
}
else
{
DragAndDrop.visualMode = DragAndDropVisualMode.Rejected;
}
if (curEvent.type == EventType.DragPerform && isValidDrop)
{
DragAndDrop.AcceptDrag();
dragAndDropSupport.ProcessDroppedObjects(
DragAndDrop.objectReferences, property);
}
break;
}
}
public static void OnGUI(List <CombinablePropertyAttribute> attributes,
FieldInfo fieldInfo, Rect position, SerializedProperty property,
GUIContent label)
{
float defaultLabelWidth = EditorGUIUtility.labelWidth;
float fieldWidth = position.width - EditorGUIUtility.labelWidth;
bool canUseDefaultDrawer = true;
bool shouldDisable = false;
RangeAttribute rangeAttribute = null;
if (fieldInfo != null)
{
rangeAttribute = fieldInfo.GetCustomAttributes(typeof(RangeAttribute), true).FirstOrDefault() as RangeAttribute;
}
ISupportDragAndDrop dragAndDropSupport = null;
IFullPropertyDrawer fullPropertyDrawer = null;
ITopPanelDrawer topPanelDrawer = null;
foreach (var a in attributes)
{
if (fieldInfo != null)
{
a.Init(fieldInfo, property.serializedObject.targetObjects);
}
if (a is IBeforeLabelAdditiveDrawer)
{
EditorGUIUtility.labelWidth -= (a as IBeforeLabelAdditiveDrawer).GetWidth();
}
if (a is IAfterLabelAdditiveDrawer)
{
EditorGUIUtility.labelWidth -= (a as IAfterLabelAdditiveDrawer).GetWidth();
canUseDefaultDrawer = false;
}
if (a is IBeforeFieldAdditiveDrawer)
{
fieldWidth -= (a as IBeforeFieldAdditiveDrawer).GetWidth();
canUseDefaultDrawer = false;
}
if (a is IAfterFieldAdditiveDrawer)
{
fieldWidth -= (a as IAfterFieldAdditiveDrawer).GetWidth();
}
if (a is IPropertyDisabler)
{
shouldDisable |= (a as IPropertyDisabler).ShouldDisable(property);
}
if (a is IFullPropertyDrawer)
{
if (fullPropertyDrawer != null)
{
Debug.LogError("Cannot have 2 advanced attributes that both override the field drawing");
return;
}
fullPropertyDrawer = a as IFullPropertyDrawer;
}
if (a is ISupportDragAndDrop)
{
dragAndDropSupport = (a as ISupportDragAndDrop);
}
if (a is ITopPanelDrawer)
{
topPanelDrawer = (a as ITopPanelDrawer);
}
}
if (fullPropertyDrawer != null && !canUseDefaultDrawer)
{
Debug.LogError("Cannot have an advanced attribute drawer that draws a custom field, and also have an advanced attribute drawer that draws between label and field!");
return;
}
Rect r = position;
Rect topPanel = new Rect();
if (topPanelDrawer != null)
{
// Y = 0 is the top, so take the Rect's "bottom" for top panel.
topPanel = r.TakeBottom(topPanelDrawer.GetHeight(), out r);
}
if (dragAndDropSupport != null)
{
processDragAndDrop(dragAndDropSupport, ref r, property);
}
EditorGUI.BeginChangeCheck();
EditorGUI.BeginDisabledGroup(shouldDisable);
if (topPanelDrawer != null)
{
topPanelDrawer.Draw(topPanel, property);
}
drawAdditive <IBeforeLabelAdditiveDrawer>(attributes, ref r, property);
if (canUseDefaultDrawer)
{
r.width = EditorGUIUtility.labelWidth + fieldWidth;
if (fullPropertyDrawer != null)
{
fullPropertyDrawer.DrawProperty(r, property, label);
}
else
{
if (rangeAttribute != null)
{
if (property.propertyType == SerializedPropertyType.Integer)
{
property.intValue = EditorGUI.IntSlider(r, label, property.intValue, (int)rangeAttribute.min, (int)rangeAttribute.max);
}
else if (property.propertyType == SerializedPropertyType.Float)
{
property.floatValue = EditorGUI.Slider(r, label, property.floatValue, rangeAttribute.min, rangeAttribute.max);
}
else
{
EditorGUI.PropertyField(r, property, label, includeChildren: true);
}
}
else
{
EditorGUI.PropertyField(r, property, label, includeChildren: true);
}
}
r.x += r.width;
}
else
{
r.width = EditorGUIUtility.labelWidth;
r = EditorGUI.PrefixLabel(r, label);
drawAdditive <IAfterLabelAdditiveDrawer>(attributes, ref r, property);
drawAdditive <IBeforeFieldAdditiveDrawer>(attributes, ref r, property);
r.width = fieldWidth;
EditorGUI.PropertyField(r, property, GUIContent.none,
includeChildren: true);
r.x += r.width;
}
drawAdditive <IAfterFieldAdditiveDrawer>(attributes, ref r, property);
EditorGUI.EndDisabledGroup();
bool didChange = false;
try
{
didChange = EditorGUI.EndChangeCheck();
}
catch (System.Exception e)
{
Debug.LogWarning("CombinablePropertyDrawer exception getting didChange: " +
e.ToString());
}
if (didChange || !property.hasMultipleDifferentValues)
{
foreach (var a in attributes)
{
if (a is IPropertyConstrainer)
{
(a as IPropertyConstrainer).ConstrainValue(property);
}
}
}
if (didChange)
{
foreach (var a in attributes)
{
a.OnPropertyChanged(property);
}
}
EditorGUIUtility.labelWidth = defaultLabelWidth;
}
public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
getAttributes(property);
float defaultLabelWidth = EditorGUIUtility.labelWidth;
float fieldWidth = position.width - EditorGUIUtility.labelWidth;
bool canUseDefaultDrawer = true;
bool shouldDisable = false;
RangeAttribute rangeAttribute = fieldInfo.GetCustomAttributes(typeof(RangeAttribute), true).FirstOrDefault() as RangeAttribute;
ISupportDragAndDrop dragAndDropSupport = null;
IFullPropertyDrawer fullPropertyDrawer = null;
foreach (var a in attributes)
{
a.fieldInfo = fieldInfo;
a.targets = property.serializedObject.targetObjects;
if (a is IBeforeLabelAdditiveDrawer)
{
EditorGUIUtility.labelWidth -= (a as IBeforeLabelAdditiveDrawer).GetWidth();
}
if (a is IAfterLabelAdditiveDrawer)
{
EditorGUIUtility.labelWidth -= (a as IAfterLabelAdditiveDrawer).GetWidth();
canUseDefaultDrawer = false;
}
if (a is IBeforeFieldAdditiveDrawer)
{
fieldWidth -= (a as IBeforeFieldAdditiveDrawer).GetWidth();
canUseDefaultDrawer = false;
}
if (a is IAfterFieldAdditiveDrawer)
{
fieldWidth -= (a as IAfterFieldAdditiveDrawer).GetWidth();
}
if (a is IPropertyDisabler)
{
shouldDisable |= (a as IPropertyDisabler).ShouldDisable(property);
}
if (a is IFullPropertyDrawer)
{
if (fullPropertyDrawer != null)
{
Debug.LogError("Cannot have 2 advanced attributes that both override the field drawing");
return;
}
fullPropertyDrawer = a as IFullPropertyDrawer;
}
if (a is ISupportDragAndDrop)
{
dragAndDropSupport = (a as ISupportDragAndDrop);
}
}
if (fullPropertyDrawer != null && !canUseDefaultDrawer)
{
Debug.LogError("Cannot have an advanced attribute drawer that draws a custom field, and also have an advanced attribute drawer that draws between label and field!");
return;
}
Rect r = position;
if (dragAndDropSupport != null)
{
processDragAndDrop(dragAndDropSupport, ref r, property);
}
EditorGUI.BeginChangeCheck();
EditorGUI.BeginDisabledGroup(shouldDisable);
drawAdditive <IBeforeLabelAdditiveDrawer>(ref r, property);
if (canUseDefaultDrawer)
{
r.width = EditorGUIUtility.labelWidth + fieldWidth;
if (fullPropertyDrawer != null)
{
fullPropertyDrawer.DrawProperty(r, property, label);
}
else
{
if (rangeAttribute != null)
{
if (property.propertyType == SerializedPropertyType.Integer)
{
property.intValue = EditorGUI.IntSlider(r, label, property.intValue, (int)rangeAttribute.min, (int)rangeAttribute.max);
}
else if (property.propertyType == SerializedPropertyType.Float)
{
property.floatValue = EditorGUI.Slider(r, label, property.floatValue, rangeAttribute.min, rangeAttribute.max);
}
else
{
EditorGUI.PropertyField(r, property, label);
}
}
else
{
EditorGUI.PropertyField(r, property, label);
}
}
r.x += r.width;
}
else
{
r.width = EditorGUIUtility.labelWidth;
r = EditorGUI.PrefixLabel(r, label);
drawAdditive <IAfterLabelAdditiveDrawer>(ref r, property);
drawAdditive <IBeforeFieldAdditiveDrawer>(ref r, property);
r.width = fieldWidth;
EditorGUI.PropertyField(r, property, GUIContent.none);
r.x += r.width;
}
drawAdditive <IAfterFieldAdditiveDrawer>(ref r, property);
EditorGUI.EndDisabledGroup();
bool didChange = EditorGUI.EndChangeCheck();
if (didChange || !property.hasMultipleDifferentValues)
{
foreach (var a in attributes)
{
if (a is IPropertyConstrainer)
{
(a as IPropertyConstrainer).ConstrainValue(property);
}
}
}
if (didChange)
{
foreach (var a in attributes)
{
a.OnPropertyChanged(property);
}
}
EditorGUIUtility.labelWidth = defaultLabelWidth;
}
