internal async void HidePopover()
{
//Fade Out(慢慢透明) 元件
await Task.WhenAll(
new Task[]
{
FakeProduct.FadeTo(0),
PagePopover.FadeTo(0)
});
//確定都透明了再做別的事
//1.隱藏假的產品
FakeProduct.IsVisible = false;
//2.隱藏Popupover
PagePopover.IsVisible = false;
}
internal async Task HidePopover()
{
// fade out the elements
await Task.WhenAll(
new Task[]
{
FakeProductCell.FadeTo(0),
PagePopover.FadeTo(0)
});
// hide our fake product cell
FakeProductCell.IsVisible = false;
// hide our Page poper
PagePopover.IsVisible = false;
}
/// <summary>
/// animation activated by pressing on a product panel
/// </summary>
/// <param name="sender"></param>
/// <param name="e">never used, do not try</param>
private async void TapGestureRecognizer_Tapped(object sender, EventArgs e)
{
// the user has tapped on an element
ProductDisplay element = sender as ProductDisplay;
// set the binding context to the selected cell
FakeProductCell.BindingContext = element.BindingContext;
FakeProductCell.ImageOffsetX = element.ImageOffsetX;
FakeProductCell.ImageOffsetY = element.ImageOffsetY;
FakeProductCell.Opacity = 1;
FakeProductCell.IsVisible = true;
// set the selected item
((MainViewModel)this.BindingContext).SelectedProduct = element.BindingContext as ProductViewModel;
// set the layout to the same postion
var yScroll = ScrollContainer.ScrollY;
Rectangle rect = new Rectangle(
x: ScrollContainer.X + element.X,
y: ScrollContainer.Y + element.Y - yScroll,
width: element.Width,
height: element.Height);
AbsoluteLayout.SetLayoutBounds(FakeProductCell, rect);
// hide the cell we clicked on
element.Opacity = 0.01;
await FakeProductCell.ExpandToFill(this.Bounds);
element.Opacity = 1;
// display the page popover
PagePopover.Opacity = 0;
PagePopover.IsVisible = true;
await PagePopover.Expand();
Vibration.Vibrate(20);
}
private async void TapGestureRecognizer_Tapped(object sender, EventArgs e)
{
//點擊了一個區塊
Controls.ProductDisplay element = sender as Controls.ProductDisplay;
//設定假的產品資料來源
FakeProduct.BindingContext = element.BindingContext;
//再次定位
FakeProduct.ImageOffsetX = element.ImageOffsetX;
FakeProduct.ImageOffsetY = element.ImageOffsetY;
FakeProduct.Opacity = 1;
FakeProduct.IsVisible = true;
//把點到是哪個頁面資訊(BindingContext)傳到自訂的頁面 [part4 2:37:44]
((MainPageViewModel)this.BindingContext).SeletedProduct = element.BindingContext as Product;
var ySctoll = scrollContainer.ScaleY;
//找到點擊的區塊是哪一個並從那個方塊展開
Rectangle rect = new Rectangle(
x: scrollContainer.X + element.X,
y: scrollContainer.Y + element.Y - ySctoll,
width: element.Width,
height: element.Height);
//Rectangle rect = pancake.Bounds;
AbsoluteLayout.SetLayoutBounds(FakeProduct, rect);
element.Opacity = 0.01;
await FakeProduct.ExpanToFill(this.Bounds);
element.Opacity = 1;
//顯示Popover Page
PagePopover.Opacity = 0;
PagePopover.IsVisible = true;
await PagePopover.Expand();
}