private async void OnCurrentCatalogContentChanged(string str)
{
IsLoadingContent = true;
var windowHeight = Window.Current.Bounds.Height;
ContentText.Height = double.NaN;
Viewer.ChangeView(0, 0, null, true);
await Task.Delay(5);
var textHeight = ContentText.ActualHeight;
if (textHeight < windowHeight + 200)
{
ContentText.Height = windowHeight + 200;
await Task.Delay(2);
}
else
{
ContentText.Height = textHeight;
}
Viewer.ChangeView(0, 50, null, Viewer.VerticalOffset > 50);
IsLoadingContent = false;
}
private void ZoomOutButton_Click(object sender, RoutedEventArgs e)
{
int Mod = ZoomFactor % 10;
int NextFactor = ZoomFactor - (Mod > 0 ? Mod : 10);
if (NextFactor >= 50)
{
ZoomFactor = NextFactor;
ZoomFactorDisplay.Text = $"{NextFactor}%";
if (Flip.ContainerFromIndex(Flip.SelectedIndex).FindChildOfName <ScrollViewer>("ScrollViewerMain") is ScrollViewer Viewer)
{
Viewer.ChangeView(null, null, NextFactor / 100f);
}
}
}
private void Flip_SelectionChanged_TaskOne(object sender, SelectionChangedEventArgs e)
{
TextBoxControl.Text = Convert.ToString(Flip.SelectedIndex + 1);
if (!PanelToggle.IsChecked.GetValueOrDefault())
{
if (Flip.ContainerFromIndex(Flip.SelectedIndex).FindChildOfName <ScrollViewer>("ScrollViewerMain") is ScrollViewer Viewer)
{
if (PdfCollection.IndexOf(e.AddedItems.Cast <BitmapImage>().FirstOrDefault()) > PdfCollection.IndexOf(e.RemovedItems.Cast <BitmapImage>().FirstOrDefault()))
{
Viewer.ChangeView(0, 0, ZoomFactor / 100f, true);
}
else
{
Viewer.ChangeView(0, Viewer.ScrollableHeight, ZoomFactor / 100f, true);
}
}
}
}
private void ScrollViewerMain_DoubleTapped(object sender, DoubleTappedRoutedEventArgs e)
{
if (e.PointerDeviceType != PointerDeviceType.Touch)
{
if (sender is ScrollViewer Viewer)
{
Point TapPoint = e.GetPosition(Viewer);
if (Math.Abs(Viewer.ZoomFactor - 1f) <= 1E-6)
{
ZoomFactor = 200;
Viewer.ChangeView(TapPoint.X, TapPoint.Y, 2f);
}
else
{
ZoomFactor = 100;
Viewer.ChangeView(null, null, 1f);
}
}
}
}