public bool GetTooltip(Vector2 windowMouseCoordinates, out string tooltip, out Rect screenRectPosition)
{
tooltip = string.Empty;
screenRectPosition = Rect.zero;
VisualElement target = m_Panel.Pick(windowMouseCoordinates);
if (target != null)
{
using (var tooltipEvent = TooltipEvent.GetPooled())
{
tooltipEvent.target = target;
tooltipEvent.tooltip = null;
tooltipEvent.rect = Rect.zero;
target.SendEvent(tooltipEvent);
if (!string.IsNullOrEmpty(tooltipEvent.tooltip) && !tooltipEvent.isDefaultPrevented)
{
tooltip = tooltipEvent.tooltip;
screenRectPosition = tooltipEvent.rect;
return(true);
}
}
}
return(false);
}
internal static void SetTooltip(float mouseX, float mouseY)
{
//mouseX,mouseY are screen relative.
GUIView view = GUIView.mouseOverView;
if (view != null && view.visualTree != null && view.visualTree.panel != null)
{
var panel = view.visualTree.panel;
// Pick expect view relative coordinates.
VisualElement target = panel.Pick(new Vector2(mouseX, mouseY) - view.screenPosition.position);
if (target != null)
{
using (var tooltipEvent = TooltipEvent.GetPooled())
{
tooltipEvent.target = target;
tooltipEvent.tooltip = null;
tooltipEvent.rect = Rect.zero;
target.SendEvent(tooltipEvent);
if (!string.IsNullOrEmpty(tooltipEvent.tooltip) && !tooltipEvent.isDefaultPrevented)
{
Rect rect = tooltipEvent.rect;
rect.position += view.screenPosition.position; //SetMouseTooltip expects Screen relative coordinates.
GUIStyle.SetMouseTooltip(tooltipEvent.tooltip, rect);
}
}
}
}
}
/// <summary>
/// 事件處理
/// </summary>
/// <param name="eveneType">事件類別</param>
/// <param name="mouseEvent">滑鼠事件</param>
public void HandleEvent(TooltipEvent eveneType, MouseEvent mouseEvent)
{
if (this.CurrentTransitionFunction == null)
{
throw new UnexpectedStateException();
}
var nextState = this.CurrentTransitionFunction.HandledEvent(eveneType, mouseEvent);
this.StateTransition(nextState);
}
/// <summary>
/// 處理事件
/// </summary>
/// <param name="tooltipEvent">事件類別</param>
/// <param name="mouseEvent">滑鼠事件</param>
/// <returns>下一個狀態</returns>
public TooltipState HandledEvent(TooltipEvent tooltipEvent, MouseEvent mouseEvent)
{
// 取得事件對應的處理函式
if (!this.EventHandlers.TryGetValue(tooltipEvent, out var handler))
{
throw new UnexpectedEventException();
}
// 呼叫處理函式
var nextState = handler(mouseEvent);
return(nextState);
}
/// <summary>
/// 呼叫狀態處理含式
/// </summary>
/// <param name="anotherState">狀態</param>
/// <param name="anotherEvent">事件類別</param>
/// <param name="mouseEvent">滑鼠事件</param>
/// <returns>回傳下一個狀態</returns>
public TooltipState CallTransitionFunction(TooltipState anotherState, TooltipEvent anotherEvent,
MouseEvent mouseEvent)
{
// 取得狀態轉移函式
if (!this.TransitionFunctions.TryGetValue(anotherState, out var transitionFunction))
{
throw new UnexpectedStateException();
}
// 呼叫狀態轉移函式
var nextState = transitionFunction.HandledEvent(anotherEvent, mouseEvent);
return(nextState);
}
protected void OnTooltip(TooltipEvent evt)
{
// TODO: Better implementation that can be styled
if (evt.target == titleContainer.Q("title-label"))
{
var typeData = NodeReflection.GetNodeType(Target.GetType());
evt.tooltip = typeData?.Help;
// Float the tooltip above the node title bar
var bound = titleContainer.worldBound;
bound.x = 0;
bound.y = 0;
bound.height *= -1;
evt.rect = titleContainer.LocalToWorld(bound);
}
}
public void NotifyTooltipClose(TooltipEvent eventArgs)
{
OnTooltipClose?.Invoke(this, eventArgs);
}
public void NotifyTooltipOpen(TooltipEvent eventArgs)
{
OnTooltipOpen?.Invoke(this, eventArgs);
}
