public static Filter Overlay(string fileName, horizontalAlign hAlign, verticalAlign vAlign)
{
return delegate(Bitmap bmp)
{
Bitmap overlayImage = new Bitmap(fileName);
return OverlayImage(bmp, overlayImage, hAlign, vAlign);
};
}
/// <summary>
/// Projects the Bitmap on a background
/// </summary>
/// <param name="backgroundWidth">Width of the background</param>
/// <param name="backgroundHeight">Height of the background</param>
/// <param name="backgroundHex">Hex value (#FF0000) of the color of the background</param>
/// <param name="hAlign">Where to place the Bitmap on the background horizontally</param>
/// <param name="vAlign">Where to place the Bitmap on the background vertically</param>
/// <returns></returns>
public static Filter Overlay(int backgroundWidth, int backgroundHeight, string backgroundHex, horizontalAlign hAlign, verticalAlign vAlign)
{
return delegate(Bitmap bmp)
{
Bitmap bmpBg = backgroundBitmap(ColorFromString(backgroundHex), backgroundWidth, backgroundHeight);
return OverlayImage(bmpBg, bmp, hAlign, vAlign);
};
}
private static Bitmap OverlayImage(Bitmap bottomLayer, Bitmap topLayer, horizontalAlign hAlign, verticalAlign vAlign)
{
Graphics bottomLayerGraphics = Graphics.FromImage(bottomLayer);
int x, y;
switch (hAlign)
{
case horizontalAlign.right:
x = bottomLayer.Width - topLayer.Width;
break;
case horizontalAlign.center:
x = (bottomLayer.Width - topLayer.Width) / 2;
break;
case horizontalAlign.left:
default:
x = 0;
break;
}
switch (vAlign)
{
case verticalAlign.bottom:
y = bottomLayer.Height - topLayer.Height;
break;
case verticalAlign.center:
y = (bottomLayer.Height - topLayer.Height) / 2;
break;
case verticalAlign.top:
default:
y = 0;
break;
}
//Bitmap van zelfde kwaliteit maken als originele plaatje
bottomLayerGraphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
bottomLayerGraphics.SmoothingMode = SmoothingMode.HighQuality;
bottomLayerGraphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
bottomLayerGraphics.CompositingQuality = CompositingQuality.HighQuality;
// fix if the input bitmap is of another resolution than the generated graphic
topLayer.SetResolution(bottomLayer.HorizontalResolution, bottomLayer.VerticalResolution);
bottomLayerGraphics.DrawImage(topLayer, x, y);
return bottomLayer;
}
