private async Task LoadInputVirtualBitmap()
{
ContentFrame_Reset();
ContentFrameCollapse();
if (InputVirtualBitmap != null)
{
InputVirtualBitmap.Dispose();
InputVirtualBitmap = null;
}
//LoadedImageInfo = "";
InputVirtualBitmap = await CanvasVirtualBitmap.LoadAsync(InputImageCanvas.Device, InputImageStream, CanvasVirtualBitmapOptions.None);
if (InputImageCanvas == null)
{
// This can happen if the page is unloaded while LoadAsync is running
return;
}
var size = InputVirtualBitmap.Size;
InputImageCanvas.Width = size.Width * (Zoom + 1);
InputImageCanvas.Height = size.Height * (Zoom + 1);
InputImageCanvas.Invalidate();
//LoadedImageInfo = string.Format("{0}x{1} image, is {2}CachedOnDemand", size.Width, size.Height, virtualBitmap.IsCachedOnDemand ? "" : "not ");
}
private void Page_SizeChanged(object sender, SizeChangedEventArgs e)
{
InputImageCanvas.Invalidate();
OutputImageCanvas.Invalidate();
InputCanvasScrollViewer.MaxWidth = double.MaxValue;
InputCanvasScrollViewer.MaxHeight = double.MaxValue;
OutputCanvasScrollViewer.MaxWidth = double.MaxValue;
OutputCanvasScrollViewer.MaxHeight = double.MaxValue;
}
private void InputCanvasScrollViewer_ViewChanged(object sender, ScrollViewerViewChangedEventArgs e)
{
InputImageCanvas.Invalidate();
OutputCanvasScrollViewer.ChangeView(InputCanvasScrollViewer.HorizontalOffset, InputCanvasScrollViewer.VerticalOffset, null);
}