/// <summary>
/// 渲染当前添加的所有元素,在OnGUI进行调用,默认自动进行调用
/// </summary>
public void OnGUI()
{
Event evt = Event.current;
if (evt.type == EventType.KeyDown && evt.control && evt.keyCode == KeyCode.R)
{
AssetDatabase.Refresh();
evt.Use();
}
//先进行渲染
if (evt.type == EventType.Repaint)
{
foreach (var VARIABLE in _rootElements)
{
VARIABLE.Draw();
}
}
//实现局部事件
{
Vector2 mousePos = evt.mousePosition;
//Drag
if (_pointerDragIndex != -1 && mousePos != _lastDragMousePosition)
{
IPointerDragHandler drag = _uiElements[_pointerDragIndex] as IPointerDragHandler;
if (drag != null)
{
drag.OnDrag(mousePos - _lastDragMousePosition, mousePos);
_lastDragMousePosition = mousePos;
_refreshWindow = true;
}
}
//PointerExit
if (_pointerEnterIndex != -1)
{
if (_uiElements.Count <= _pointerEnterIndex)
{
_pointerEnterIndex = -1;
}
else
{
IOverlapPoint ip = _uiElements[_pointerEnterIndex] as IOverlapPoint;
if (ip != null && !ip.OverlapPoint(mousePos, evt))
{
IPointerExitHandler ie = ip as IPointerExitHandler;
ie?.OnPointerExit();
_pointerEnterIndex = -1;
}
}
}
//PointerClickExit
if (_pointerClickEnterIndex != -1)
{
if (_uiElements.Count <= _pointerClickEnterIndex)
{
_pointerClickEnterIndex = -1;
}
else
{
IOverlapPoint ip = _uiElements[_pointerClickEnterIndex] as IOverlapPoint;
if (ip != null && !ip.OverlapPoint(mousePos, evt))
{
_pointerClickEnterIndex = -1;
}
}
}
//PointerEnter
for (int i = _uiElements.Count - 1; i >= 0; i--)
{
IPointerEnterHandler id = _uiElements[i] as IPointerEnterHandler;
if (id != null && id.OverlapPoint(mousePos, evt))
{
if (_pointerEnterIndex == -1 || _pointerEnterIndex < i)
{
if (_pointerEnterIndex != -1)
{
IPointerExitHandler ie = _uiElements[_pointerEnterIndex] as IPointerExitHandler;
ie?.OnPointerExit();
}
_pointerEnterIndex = i;
id.OnPointerEnter();
break;
}
}
}
//PointerClickEnter
for (int i = _uiElements.Count - 1; i >= 0; i--)
{
IPointerClickHandler id = _uiElements[i] as IPointerClickHandler;
if (id != null && id.OverlapPoint(mousePos, evt))
{
if (_pointerClickEnterIndex == -1 || _pointerClickEnterIndex < i)
{
_pointerClickEnterIndex = i;
break;
}
}
}
}
//处理鼠标按下
if (evt.type == EventType.MouseDown)
{
Vector2 mousePos = evt.mousePosition;
bool hasFocus = false;
//PointerDown
for (int i = _uiElements.Count - 1; i >= 0; i--)
{
UIElement ui = _uiElements[i];
IOverlapPoint ip = ui as IOverlapPoint;
if (ip.OverlapPoint(mousePos, evt))
{
hasFocus = true;
IFocus focus = ui as IFocus;
IPointerDownHandler down = ui as IPointerDownHandler;
IPointerDragHandler drag = ui as IPointerDragHandler;
//Focus
if (focus != null)
{
//向上查找所有父亲
UIElement parent = ui;
while (parent != null)
{
focus = parent as IFocus;
if (focus != null)
{
_focusElementsCur.Add(focus);
}
parent = parent.Parent;
}
//取消之前的
for (int i2 = _focusElements.Count - 1; i2 >= 0; i2--)
{
if (!_focusElementsCur.Contains(_focusElements[i2]))
{
_focusElements[i2].Focus = false;
}
}
//聚焦现在的,从父亲到孩子
for (int i2 = _focusElementsCur.Count - 1; i2 >= 0; i2--)
{
_focusElementsCur[i2].Focus = true;
}
//交换之前与现在的列表,并清除现在
List <IFocus> temp = _focusElements;
_focusElements = _focusElementsCur;
_focusElementsCur = temp;
_focusElementsCur.Clear();
if (down == null && drag == null)
{
break;
}
}
if (drag != null && _pointerDragIndex == -1 && evt.button == 0)
{
_pointerDragIndex = i;
drag.OnStartDrag(mousePos);
_lastDragMousePosition = mousePos;
if (down == null)
{
break;
}
}
if (down != null)
{
//PointerDown
down.OnPointerDown(mousePos, evt.shift, evt.control, evt.alt);
break;
}
}
}
//PointerClickDown
for (int i = _uiElements.Count - 1; i >= 0; i--)
{
IPointerClickHandler id = _uiElements[i] as IPointerClickHandler;
if (id != null && id.OverlapPoint(mousePos, evt) && _pointerClickPressIndex == -1)
{
_pointerClickPressButton = evt.button;
_pointerClickPressIndex = i;
break;
}
}
//处理空白区域点击取消Focus
if (!hasFocus)
{
//取消焦点
for (int i2 = _focusElements.Count - 1; i2 >= 0; i2--)
{
_focusElements[i2].Focus = false;
}
_focusElements.Clear();
}
_refreshWindow = true;
}
//处理鼠标抬起
if (evt.type == EventType.MouseUp || evt.type == EventType.MouseLeaveWindow)
{
Vector2 mousePos = evt.mousePosition;
if (evt.button == 0)
{
if (_pointerDragIndex != -1)
{
if (_uiElements[_pointerDragIndex] is IPointerDragHandler drag)
{
drag.OnDragEnd(mousePos);
}
_pointerDragIndex = -1;
}
}
//PointerUp
for (int i = _uiElements.Count - 1; i >= 0; i--)
{
IPointerUpHandler id = _uiElements[i] as IPointerUpHandler;
if (id != null && id.OverlapPoint(mousePos, evt))
{
id.OnPointerUp(mousePos);
break;
}
}
//PointerClickUp
if (_pointerClickPressIndex != -1)
{
if (_pointerClickEnterIndex != -1)
{
IPointerClickHandler ic = _uiElements[_pointerClickPressIndex] as IPointerClickHandler;
if (_pointerClickPressButton == evt.button)
{
if (_pointerClickPressIndex == _pointerClickEnterIndex)
{
ic?.OnClick(mousePos);
}
else
{
ic?.OnCancelClick(mousePos);
}
}
else
{
ic?.OnCancelClick(mousePos);
}
_pointerClickEnterIndex = -1;
_pointerClickPressIndex = -1;
}
else
{
IPointerClickHandler ic = _uiElements[_pointerClickPressIndex] as IPointerClickHandler;
ic?.OnCancelClick(mousePos);
_pointerClickEnterIndex = -1;
_pointerClickPressIndex = -1;
}
}
_refreshWindow = true;
}
//处理鼠标滚轮滑动
if (evt.type == EventType.ScrollWheel)
{
for (int i = _uiElements.Count - 1; i >= 0; i--)
{
IScrollHandler ic = _uiElements[i] as IScrollHandler;
ic?.OnScroll(evt.delta.y);
}
}
//处理键盘按下
if (evt.type == EventType.KeyDown)
{
if (evt.character != 0)
{
for (int i = _uiElements.Count - 1; i >= 0; i--)
{
ICharacterInputHandler ic = _uiElements[i] as ICharacterInputHandler;
ic?.OnCharacterInput(evt.character);
}
}
for (int i = _uiElements.Count - 1; i >= 0; i--)
{
IKeyDownHandler ui = _uiElements[i] as IKeyDownHandler;
ui?.OnKeyDown(evt.keyCode, evt.shift, evt.control, evt.alt);
}
evt.Use();
_refreshWindow = true;
}
if (evt.type == EventType.KeyUp)
{
for (int i = _uiElements.Count - 1; i >= 0; i--)
{
IKeyUpHandler ui = _uiElements[i] as IKeyUpHandler;
ui?.OnKeyUp(evt.keyCode);
}
evt.Use();
_refreshWindow = true;
}
//RefreshAllElement
if (_hasChangedElement)
{
RefreshAllElementInline();
_hasChangedElement = false;
_refreshWindow = true;
}
//鼠标移动重绘
if (_lastMoveMousePosition != evt.mousePosition)
{
_refreshWindow = true;
_lastDragMousePosition = evt.mousePosition;
}
//自动重绘界面
if (_refreshWindow)
{
_refreshWindow = false;
CurEditorWindow.Repaint();
}
}
static void Execute(IKeyUpHandler handler, BaseEventData eventData)
{
handler.OnKeyUp(ExecuteEvents.ValidateEventData <KeyEventData>(eventData));
}