private async Task UpdateTileAsync()
{
// create UI
var grid = new Grid
{
VerticalAlignment = Windows.UI.Xaml.VerticalAlignment.Stretch,
HorizontalAlignment = Windows.UI.Xaml.HorizontalAlignment.Stretch,
Background=new SolidColorBrush(Colors.Red),
};
var star = new FontIcon
{
Glyph = "",
FontSize = 50
};
grid.Children.Add(star);
var number = new TextBlock
{
Text = 12.ToString(),
FontSize = 25,
Foreground = new SolidColorBrush(Colors.White)
};
grid.Children.Add(number);
// create bitmap
var bitmap = new RenderTargetBitmap();
await bitmap.RenderAsync(grid, 150, 150);
// create destination file
var folder = ApplicationData.Current.LocalFolder;
var file = await folder.CreateFileAsync("tile.png", CreationCollisionOption.ReplaceExisting);
// write bitmap to file
using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
var pixels = await bitmap.GetPixelsAsync();
// using System.Runtime.InteropServices.WindowsRuntime;
var bytes = pixels.ToArray();
var encoder = await BitmapEncoder
.CreateAsync(BitmapEncoder.PngEncoderId, stream);
var format = BitmapPixelFormat.Bgra8;
var alpha = BitmapAlphaMode.Ignore;
var width = (uint)bitmap.PixelWidth;
var height = (uint)bitmap.PixelHeight;
var dpi = DisplayInformation.GetForCurrentView().LogicalDpi;
encoder.SetPixelData(format, alpha, width, height, dpi, dpi, bytes);
await encoder.FlushAsync();
stream.Seek(0);
}
await FileIO.WriteBytesAsync(file, null);
// replace existing tile
var type = TileTemplateType.TileSquare150x150Image;
var xml = TileUpdateManager.GetTemplateContent(type);
// no text on tile
var elements = xml.GetElementsByTagName("binding");
(elements[0] as XmlElement).SetAttribute("branding", "none");
// image on tile
elements = xml.GetElementsByTagName("image");
(elements[0] as XmlElement).SetAttribute("src", file.Path);
// update tile
var notification = new TileNotification(xml);
var updater = TileUpdateManager.CreateTileUpdaterForApplication();
updater.Clear();
updater.Update(notification);
// prepare notification toast
var toastTemplate = ToastTemplateType.ToastText01;
xml = ToastNotificationManager.GetTemplateContent(toastTemplate);
var text = xml.CreateTextNode(string.Format("Tile image updated to {0}", number));
elements = xml.GetElementsByTagName("text");
elements[0].AppendChild(text);
// send toast
var toast = new ToastNotification(xml);
var notifier = ToastNotificationManager.CreateToastNotifier();
notifier.Show(toast);
Debug.WriteLine("Background task toast shown: " + number.ToString());
}
private void drawBox()
{
int lt = this.chartBoxLineThickness;
Color color = this.chartboxLineColor;
// top line of the box
drawLine(new Point(x, y), new Point(x + this.width, y), lt, color);
// and we folow the box drawing lines clockwise
drawLine(new Point(x + this.width, y), new Point(x + this.width, y + this.height), lt, color);
drawLine(new Point(x + this.width, y + this.height), new Point(x, y + this.height), lt, color);
drawLine(new Point(x, y + this.height), new Point(x, y), lt, color);
Point p = new Point();
p.X = x - 30;
p.Y = y + this.height;
for (int i = 30; i < 100; i += 10)
{
//draw amplines
double amplitude = -i;
double lineY = y + this.height - ((amplitude + 100.0) / 80.0) * this.height;
Point startPoint = new Point(x, lineY);
Point endPoint = new Point(x + width, lineY);
drawLine(startPoint,endPoint, 1, Colors.Gray);
TextBlock textBlock = new TextBlock();
textBlock.Text = amplitude.ToString();
Canvas.SetLeft(textBlock, startPoint.X - 30);
Canvas.SetTop(textBlock, startPoint.Y - 10);
this.activeCanvas.Children.Add(textBlock);
}
//draw channel numbers
for (int i = 1; i < 14; i++)
{
double channelWidth = this.width / channelSpaces;
double offset = 1 * channelWidth;
//drawing of channel number numberline number
Point startPoint = new Point(x + offset + (channelWidth) * i, y + this.height);
Point endPoint = new Point(startPoint.X, startPoint.Y + 10);
drawLine(startPoint, endPoint, 1, this.chartboxLineColor);
//drawing of channel number
Point channelNumberPoint = new Point(x + offset + (channelWidth) * i, y + this.height + 20);
TextBlock textBlock = new TextBlock();
textBlock.Text = i.ToString();
double guestimatedLabelWidth = 8 * i.ToString().Length;
Canvas.SetLeft(textBlock, channelNumberPoint.X - guestimatedLabelWidth / 2);
Canvas.SetTop(textBlock, channelNumberPoint.Y - 10);
this.activeCanvas.Children.Add(textBlock);
if (1 == i && true != hideLabels)
{
TextBlock channeltb = new TextBlock();
channeltb.Text = "Channel";
double guestimatedChannelLabelWidth = 4 * channeltb.ToString().Length;
Canvas.SetLeft(channeltb, channelNumberPoint.X - guestimatedChannelLabelWidth / 2);
Canvas.SetTop(channeltb, channelNumberPoint.Y - 10);
this.activeCanvas.Children.Add(channeltb);
}
}
if (true != hideLabels)
{
TextBlock tb = new TextBlock();
tb.Text = "dBm";
RotateTransform rt = new RotateTransform();
rt.Angle = -90;
tb.RenderTransform = rt;
Canvas.SetLeft(tb, p.X);
Canvas.SetTop(tb, p.Y);
this.activeCanvas.Children.Add(tb);
}
}
