/// <summary>
/// Gets the starting <see cref="Point"/> where the overlay needs to be drawn
/// </summary>
/// <param name="overlayPosition">The <see cref="OverlayPositionKind"/></param>
/// <param name="targetImage">The <see cref="Image"/> that the overlay is added to</param>
/// <param name="overlayBitMapImage">The overlay<see cref="Image"/></param>
/// <returns>Starting <see cref="Point"/> where the overlay needs to be drawn</returns>
private static Point GetOverlayPoint(OverlayPositionKind overlayPosition, Image targetImage, Image overlayBitMapImage)
{
var rightXpos = targetImage.Width - overlayBitMapImage.Width;
var bottomYpos = targetImage.Height - overlayBitMapImage.Height;
switch (overlayPosition)
{
case OverlayPositionKind.BottomRight:
return(new Point(rightXpos, bottomYpos));
case OverlayPositionKind.TopRight:
return(new Point(rightXpos, 0));
default:
return(new Point(0, 0));
}
}
/// <summary>
/// The bitmap source with the image and the overlay.
/// </summary>
/// <param name="iconUri">
/// The uri to the source image.
/// </param>
/// <param name="overlayUri">
/// The uri of the overlay
/// </param>
/// <param name="overlayPosition">
/// The overlay position
/// </param>
/// <returns>
/// The <see cref="BitmapSource"/>.
/// </returns>
public static BitmapSource WithOverlay(Uri iconUri, Uri overlayUri, OverlayPositionKind overlayPosition = OverlayPositionKind.TopLeft)
{
var source = new BitmapImage(iconUri);
var overlay = new BitmapImage(overlayUri);
var overlayBitMapImage = BitmapImage2Bitmap(overlay, (int)source.Width / 2, (int)source.Height / 2);
var thingBitMapImage = BitmapImage2Bitmap(source);
var img = new Bitmap(thingBitMapImage.Width, thingBitMapImage.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
var xOverlay = overlayPosition == OverlayPositionKind.TopLeft || overlayPosition == OverlayPositionKind.BottomLeft ? 0 : (int)source.Width / 2;
var yOverlay = overlayPosition == OverlayPositionKind.TopLeft || overlayPosition == OverlayPositionKind.TopRight ? 0 : (int)source.Height / 2;
using (var gr = Graphics.FromImage(img))
{
gr.CompositingMode = CompositingMode.SourceOver;
gr.DrawImage(thingBitMapImage, new Point(0, 0));
gr.DrawImage(overlayBitMapImage, new Point(xOverlay, yOverlay));
}
return(Bitmap2BitmapSource(img));
}
/// <summary>
/// The bitmap source with the image and the overlay.
/// </summary>
/// <param name="iconUri">
/// The uri to the source image.
/// </param>
/// <param name="overlayUri">
/// The uri of the overlay
/// </param>
/// <param name="overlayPosition">
/// The overlay position
/// </param>
/// <returns>
/// The <see cref="BitmapSource"/>.
/// </returns>
public static BitmapSource WithOverlay(Uri iconUri, Uri overlayUri, OverlayPositionKind overlayPosition = OverlayPositionKind.TopRight)
{
var source = new BitmapImage(iconUri);
var overlay = new BitmapImage(overlayUri);
var thingBitMapImage = BitmapImage2Bitmap(source);
var overlayBitMapImage = BitmapImage2Bitmap(overlay, (int)Math.Floor(thingBitMapImage.Width * 0.75D), (int)Math.Floor(thingBitMapImage.Height * 0.75D));
var img = new Bitmap(
(int)Math.Floor(thingBitMapImage.Width * 1.4D),
(int)Math.Floor(thingBitMapImage.Height * 1.0D),
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
using (var gr = Graphics.FromImage(img))
{
gr.CompositingMode = CompositingMode.SourceOver;
gr.DrawImage(thingBitMapImage, GetMainImagePoint(img, thingBitMapImage));
gr.DrawImage(overlayBitMapImage, GetOverlayPoint(overlayPosition, img, overlayBitMapImage));
}
return(Bitmap2BitmapSource(img));
}
/// <summary>
/// Queries the <see cref="BitmapSource"/> with an icon overlayed from the cache if the cache contains it else the <see cref="BitmapSource"/>
/// is created, added to the cache and then returned.
/// </summary>
/// <param name="uri">
/// The uri of the <see cref="BitmapSource"/>
/// </param>
/// <param name="overlayUri">
/// The uri of the overlay <see cref="BitmapSource"/>
/// </param>
/// <returns>
/// An instance of <see cref="BitmapSource"/>
/// </returns>
public BitmapSource QueryOverlayBitmapSource(Uri uri, Uri overlayUri, OverlayPositionKind overlayPosition = OverlayPositionKind.TopLeft)
{
return(IconUtilities.WithOverlay(uri, overlayUri, overlayPosition));
}
