/// <summary>
/// Defines fill brush.
/// </summary>
/// <param name="parentColor">Parent color.</param>
/// <returns>Normal fill brush</returns>
private static SolidColorBrush _GetFillBrush(System.Drawing.Color parentColor)
{
Color color = new Color();
color.A = parentColor.A;
color.R = parentColor.R;
color.G = parentColor.G;
color.B = parentColor.B;
SolidColorBrush resultBrush = new SolidColorBrush(color);
// Freeze brush.
resultBrush = (SolidColorBrush)resultBrush.GetCurrentValueAsFrozen();
Debug.Assert(resultBrush != null);
return(resultBrush);
}
/// <summary>
/// Gets grayscale brush from color.
/// </summary>
/// <param name="originalColor">Input color.</param>
/// <returns>Brush with converted grayscale color.</returns>
private static SolidColorBrush _GetGrayscaleBrush(System.Drawing.Color originalColor)
{
Color grayscaleColor = new Color();
double R = Convert.ToDouble(originalColor.R);
double G = Convert.ToDouble(originalColor.G);
double B = Convert.ToDouble(originalColor.B);
grayscaleColor.A = originalColor.A;
// Convert original color to grayscale.
grayscaleColor.R = Convert.ToByte((R + G + B) / GRAYSCALE_CONVERTER_PARAMETER);
grayscaleColor.G = Convert.ToByte((R + G + B) / GRAYSCALE_CONVERTER_PARAMETER);
grayscaleColor.B = Convert.ToByte((R + G + B) / GRAYSCALE_CONVERTER_PARAMETER);
SolidColorBrush resultBrush = new SolidColorBrush(grayscaleColor);
// Freeze brush.
resultBrush = (SolidColorBrush)resultBrush.GetCurrentValueAsFrozen();
Debug.Assert(resultBrush != null);
return(resultBrush);
}
/// <summary>
/// Creates canvas with invalidated route and its stops.
/// </summary>
/// <param name="route">Route to draw.</param>
/// <param name="sortedRouteStops">Sorted stops from route.</param>
/// <param name="mapImage">Map image.</param>
/// <returns>Canvas with invalidated route and its stops.</returns>
private SysControls.Canvas _CreateRouteCanvas(Route route, IList <Stop> sortedRouteStops, MapImage mapImage)
{
Debug.Assert(null != route);
Debug.Assert(null != mapImage);
Debug.Assert(null != sortedRouteStops);
// create canvas
var canvas = new SysControls.Canvas();
canvas.InvalidateVisual();
canvas.Height = mapImage.ImageHeight;
canvas.Width = mapImage.ImageWidth;
// init route brush from route color
System.Drawing.Color color = route.Color;
var mediaColor =
SysWindows.Media.Color.FromArgb(color.A, color.R, color.G, color.B);
var fillingBrush = new SolidColorBrush(mediaColor);
// create and init route image
SymbolControl routeBox = new SymbolControl(_routeSymbolTemplate);
routeBox.Geometry = _CreatePath(route,
sortedRouteStops,
mapImage.Extent,
mapImage.ImageWidth,
mapImage.ImageHeight);
routeBox.Fill = (SolidColorBrush)fillingBrush.GetCurrentValueAsFrozen();
routeBox.HorizontalAlignment = HorizontalAlignment.Stretch;
routeBox.VerticalAlignment = VerticalAlignment.Stretch;
// draw route
canvas.Children.Add(routeBox);
// draw stops - from last to first (visual elements)
int stopLastIndex = sortedRouteStops.Count - 1;
for (int index = stopLastIndex; index >= 0; --index)
{
Stop stop = sortedRouteStops[index];
if (!stop.MapLocation.HasValue)
{
continue; // skip empty
}
bool isVisible = true;
if (stop.AssociatedObject is Location)
{
if (index == 0)
{
isVisible = _showLeadingStemTime;
}
else if (index == stopLastIndex)
{
isVisible = _showTrailingStemTime;
}
// else do nothing
}
if (isVisible)
{
UIElement element = _CreateStopUIElement(stop, mapImage, fillingBrush);
if (element != null)
{
canvas.Children.Add(element);
}
}
}
return(canvas);
}
