/**
* Draw the specific inventory item
**/
public static void Render(Rect position, GUIContent guiContent, GUIStyle guiStyle, DraggableHandler handler)
{
GUI.Box(position, guiContent, guiStyle);
// if the position of the current mouse event is within the rendering window
if (position.Contains(UnityEngine.Event.current.mousePosition))
{
// trigger either Hover event
if (draggedItem.item == null)
{
handler.Hover();
}
else
{
handler.Hover(draggedItem.item);
}
// holding the item that will be dragged
// (if any)
DraggableItem item = null;
// if a drag is initiated, notify the handler
if (UnityEngine.Event.current.type == EventType.MouseDrag && draggedItem.item == null)
{
item = handler.Drag();
UnityEngine.Event.current.Use();
}
// if a mouse up event happens, notify the handler
// whether or not there is an item being dragged
if (UnityEngine.Event.current.type == EventType.MouseUp)
{
if (draggedItem.item == null)
{
item = handler.Click();
}
else
{
// remove the dragged item if the handler returns true
item = handler.ItemDropped(draggedItem.item);
if (item != null)
{
item.Pickup();
draggedItem.item = item;
}
else
{
draggedItem.item = null;
}
}
UnityEngine.Event.current.Use();
}
if (item != null)
{
item.Pickup();
draggedItem.item = item;
}
}
}
/**
* Draw a UI Draggable Element
* @param Rect position The position to render the element
* @param GUIContent guiContent The GUIContent of this element
* @param GUIStyle guiStyle The GUIStyle
* @param DraggableHandler handler The handler that receives the click
* and drag events
**/
public static void Draggable(Rect position, GUIContent guiContent, GUIStyle guiStyle, DraggableHandler handler)
{
Element.Draggable.Render(position, guiContent, guiStyle, handler);
}
