/// <summary>
/// 弹出
/// </summary>
/// <param name="popupItem">窗体实例</param>
/// <param name="rect">矩形区域</param>
/// <returns>Task</returns>
private async Task ShowPopup(PopupItem popupItem, Rectangle rect)
{
//重绘
_rect = rect;
_canvasView.InvalidateSurface();
// 响应不传递
_absoluteLayout.InputTransparent = false;
// 画布可见
_canvasView.IsVisible = true;
// 获取弹窗的view对象
var popup = ((AbsoluteLayout)Children[1]).Children.First(c => c == popupItem.Content);
// 向内偏移2
var localRect = new Rectangle(rect.X + 2, rect.Y + 2, rect.Width - 4, rect.Height - 4);
// 设置弹窗位置
popup.SetValue(AbsoluteLayout.LayoutBoundsProperty, localRect);
// 弹窗对象可见
//popupItem.IsShown = true;
// 弹窗view可见
popup.IsVisible = true;
// 显示动画
await Task.WhenAll(
popup.FadeTo(1, 200, Easing.CubicInOut),
_canvasView.FadeTo(1, 200, Easing.CubicInOut)
).ConfigureAwait(false);
}
public async Task PopUpOverBelow(object visualElement, PopupItem popupItem, float width, float height)
{
_absoluteLayout.InputTransparent = false;
var popup = ((AbsoluteLayout)Children[1]).Children.First(c => c == popupItem.Content);
var v = visualElement as VisualElement;
var x = v.X;
var y = v.Y;
var w = v.Width;
var h = v.Height;
var ifPop = false;
while (true)
{
v = v.Parent as VisualElement;
if (v != null)
{
x += v.X;
y += v.Y;
if (v == this)
{
ifPop = true;
break;
}
}
else
{
break;
}
}
if (ifPop)
{
popup.SetValue(AbsoluteLayout.LayoutBoundsProperty, new Rectangle(x, y + h, width, height));
//popupItem.IsShown = true;
popup.IsVisible = true;
await Task.WhenAll(
popup.FadeTo(1, 200, Easing.CubicInOut)
);
}
}
/// <summary>
/// 弹出
/// </summary>
/// <param name="popupItem">窗体实例</param>
/// <param name="clickElem">被点击元素</param>
/// <param name="width">弹窗宽度</param>
/// <param name="height">弹窗高度</param>
/// <returns></returns>
public async Task ShowPopup(PopupItem popupItem, VisualElement clickElem, double width = 100, double height = 200, bool isProportional = false, bool isDrawTriangle = false)
{
if (isProportional)
{
width = width > 1 ? 1 : width;
height = height > 1 ? 1 : height;
}
_isDrawTriangle = isDrawTriangle;
// 获取点击元素相对X
var x = clickElem.X;
// 获取点击元素相对Y
var y = clickElem.Y;
// 获取点击元素高
var h = clickElem.Height;
// 获取点击元素父元素
var parent = clickElem.Parent as VisualElement;
// 如果父元素不是this布局对象
while (parent != this)
{
// X加上父元素的相对偏移量
x += parent.X;
// Y加上父元素的相对偏移量
y += parent.Y;
// 获取父元素的父元素
parent = parent.Parent as VisualElement;
}
_drawX = x;
// 加上元素高度后为弹窗起始y
if (Children[0].GetType() == typeof(ScrollView))
{
var scrollView = Children[0] as ScrollView;
var scrollY = scrollView.ScrollY;
y = y + h - scrollY;
}
else
{
y = y + h;
}
if (isProportional)
{
width = Width * width;
if ((y - h / 2) < (Height / 2))
{
height = (Height - y) * height;
}
else
{
height = (y - h) * height;
}
}
// 弹窗宽度大于屏幕宽度
if (width > Width)
{
// 起始x位置设置为0
x = 0;
// 宽度设置为屏幕宽度
width = Width;
}
else
{
// 如果x加上弹窗宽度超出屏幕
if (x + width > Width)
{
x = Width - width;
}
}
//var test = absoluteLayout.Height;
// 点击元素位置在屏幕位置一半以上
if ((y - h / 2) < (Height / 2))
{
// 弹窗高度大于下方剩余屏幕高度
if (height > Height - y)
{
height = Height - y;
}
// 箭头向上
_isArrowUp = true;
}
else
{
// 弹窗高度大于上方剩余屏幕高度
if (height > y - h)
{
height = y - h;
}
// 设置y起始位置为点击元素起始位置往上height高度处
y = y - h - height;
// 箭头向下
_isArrowUp = false;
}
// 当获取到绝对X、Y后，弹窗
await ShowPopup(popupItem, new Rectangle(x, y, width, height));
}
