static void UpdateElementUnderPointer(EventBase evt, IPanel panel, out VisualElement elementUnderPointer)
{
IPointerEvent pointerEvent = evt as IPointerEvent;
BaseVisualElementPanel basePanel = panel as BaseVisualElementPanel;
bool shouldRecomputeTopElementUnderPointer = true;
if (evt is IPointerEventInternal)
{
shouldRecomputeTopElementUnderPointer =
((IPointerEventInternal)pointerEvent).recomputeTopElementUnderPointer;
}
elementUnderPointer = shouldRecomputeTopElementUnderPointer
? basePanel?.Pick(pointerEvent.position)
: basePanel?.GetTopElementUnderPointer(pointerEvent.pointerId);
if (basePanel != null && shouldRecomputeTopElementUnderPointer)
{
basePanel.SetElementUnderPointer(elementUnderPointer, evt);
}
}
public void DispatchEvent(EventBase evt, IPanel panel)
{
IMouseEvent mouseEvent = evt as IMouseEvent;
if (mouseEvent == null)
{
return;
}
BaseVisualElementPanel basePanel = panel as BaseVisualElementPanel;
// update element under mouse and fire necessary events
bool shouldRecomputeTopElementUnderMouse = true;
if ((IMouseEventInternal)mouseEvent != null)
{
shouldRecomputeTopElementUnderMouse =
((IMouseEventInternal)mouseEvent).recomputeTopElementUnderMouse;
}
VisualElement elementUnderMouse = shouldRecomputeTopElementUnderMouse
? basePanel?.Pick(mouseEvent.mousePosition)
: basePanel?.GetTopElementUnderPointer(PointerId.mousePointerId);
if (evt.target == null && elementUnderMouse != null)
{
evt.propagateToIMGUI = false;
evt.target = elementUnderMouse;
}
else if (evt.target == null && elementUnderMouse == null)
{
// Don't modify evt.propagateToIMGUI.
evt.target = panel?.visualTree;
}
else if (evt.target != null)
{
evt.propagateToIMGUI = false;
}
if (basePanel != null)
{
// If mouse leaves the window, make sure element under mouse is null.
// However, if pressed button != 0, we are getting a MouseLeaveWindowEvent as part of
// of a drag and drop operation, at the very beginning of the drag. Since
// we are not really exiting the window, we do not want to set the element
// under mouse to null in this case.
if (evt.eventTypeId == MouseLeaveWindowEvent.TypeId() &&
(evt as MouseLeaveWindowEvent).pressedButtons == 0)
{
basePanel.SetElementUnderPointer(null, evt);
}
else if (shouldRecomputeTopElementUnderMouse)
{
basePanel.SetElementUnderPointer(elementUnderMouse, evt);
}
}
if (evt.target != null)
{
EventDispatchUtilities.PropagateEvent(evt);
}
if (!evt.isPropagationStopped && panel != null)
{
if (evt.propagateToIMGUI ||
evt.eventTypeId == MouseEnterWindowEvent.TypeId() ||
evt.eventTypeId == MouseLeaveWindowEvent.TypeId()
)
{
EventDispatchUtilities.PropagateToIMGUIContainer(panel.visualTree, evt);
}
}
evt.stopDispatch = true;
}
public void DispatchEvent(EventBase evt, IPanel panel)
{
IMouseEvent mouseEvent = evt as IMouseEvent;
if (mouseEvent == null)
{
return;
}
BaseVisualElementPanel basePanel = panel as BaseVisualElementPanel;
// update element under mouse and fire necessary events
bool shouldRecomputeTopElementUnderMouse = true;
if ((IMouseEventInternal)mouseEvent != null)
{
shouldRecomputeTopElementUnderMouse =
((IMouseEventInternal)mouseEvent).recomputeTopElementUnderMouse;
}
VisualElement elementUnderMouse = shouldRecomputeTopElementUnderMouse
? basePanel?.Pick(mouseEvent.mousePosition)
: basePanel?.GetTopElementUnderPointer(PointerId.mousePointerId);
if (evt.target == null && elementUnderMouse != null)
{
evt.propagateToIMGUI = false;
evt.target = elementUnderMouse;
}
else if (evt.target == null && elementUnderMouse == null)
{
// Event occured outside the window.
// Send event to visual tree root and
// don't modify evt.propagateToIMGUI.
evt.target = panel?.visualTree;
}
else if (evt.target != null)
{
evt.propagateToIMGUI = false;
}
if (basePanel != null)
{
// If mouse leaves the window, make sure element under mouse is null.
// However, if pressed button != 0, we are getting a MouseLeaveWindowEvent as part of
// of a drag and drop operation, at the very beginning of the drag. Since
// we are not really exiting the window, we do not want to set the element
// under mouse to null in this case.
if (evt.eventTypeId == MouseLeaveWindowEvent.TypeId() &&
(evt as MouseLeaveWindowEvent).pressedButtons == 0)
{
basePanel.SetElementUnderPointer(null, evt);
}
else if (shouldRecomputeTopElementUnderMouse)
{
basePanel.SetElementUnderPointer(elementUnderMouse, evt);
}
}
if (evt.target != null)
{
EventDispatchUtilities.PropagateEvent(evt);
if (evt.target is IMGUIContainer)
{
evt.propagateToIMGUI = true;
evt.skipElements.Add(evt.target);
}
}
if (!evt.isPropagationStopped && panel != null)
{
if (evt.propagateToIMGUI ||
evt.eventTypeId == MouseEnterWindowEvent.TypeId() ||
evt.eventTypeId == MouseLeaveWindowEvent.TypeId()
)
{
EventDispatchUtilities.PropagateToIMGUIContainer(panel.visualTree, evt);
}
else if (panel.visualTree.childCount > 0 && panel.visualTree[0] is IMGUIContainer)
{
// Send the events to the GUIView container so that it can process them.
// This avoid elements near the edge of the window preventing the dock area splitter to work.
// See case : https://fogbugz.unity3d.com/f/cases/1197851/
var topLevelIMGUI = (IMGUIContainer)panel.visualTree[0];
if (!evt.Skip(topLevelIMGUI) && evt.imguiEvent != null)
{
topLevelIMGUI.SendEventToIMGUI(evt, false);
if (evt.imguiEvent.rawType == EventType.Used)
{
evt.StopPropagation();
}
}
}
}
evt.stopDispatch = true;
}
protected RenderChain(BaseVisualElementPanel panel, UIRenderDevice device, AtlasBase atlas, VectorImageManager vectorImageManager)
{
Constructor(panel, device, atlas, vectorImageManager);
}
public RenderChain(BaseVisualElementPanel panel)
{
Constructor(panel, new UIRenderDevice(), panel.atlas, new VectorImageManager(panel.atlas));
}
