/// <summary>
/// Processes the image.
/// </summary>
/// <param name="factory">
/// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
/// the image to process.
/// </param>
/// <param name="image">The current image to process</param>
/// <param name="newImage">The new Image to return</param>
/// <returns>
/// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
/// </returns>
public Image TransformImage(ImageFactory factory, Image image, Image newImage)
{
using (Graphics graphics = Graphics.FromImage(newImage))
{
using (ImageAttributes attributes = new ImageAttributes())
{
attributes.SetColorMatrix(this.Matrix);
Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
// Overlay the image with some semi-transparent colors to finish the effect.
using (GraphicsPath path = new GraphicsPath())
{
path.AddRectangle(rectangle);
// Paint a burgundy rectangle with a transparency of ~30% over the image.
// Paint a blue rectangle with a transparency of 20% over the image.
using (SolidBrush brush = new SolidBrush(Color.FromArgb(77, 38, 14, 28)))
{
Region oldClip = graphics.Clip;
graphics.Clip = new Region(rectangle);
graphics.FillRectangle(brush, rectangle);
// Fill the blue.
brush.Color = Color.FromArgb(51, 29, 32, 59);
graphics.FillRectangle(brush, rectangle);
graphics.Clip = oldClip;
}
}
}
}
// Add brightness and contrast to finish the effect.
factory.Update(newImage);
Brightness brightness = new Brightness {
DynamicParameter = 5
};
newImage = (Bitmap)brightness.ProcessImage(factory);
factory.Update(newImage);
Contrast contrast = new Contrast {
DynamicParameter = 85
};
newImage = (Bitmap)contrast.ProcessImage(factory);
// Reassign the image.
image.Dispose();
image = newImage;
return(image);
}
/// <summary>
/// Changes the brightness of the current image.
/// </summary>
/// <param name="percentage">
/// The percentage by which to alter the images brightness.
/// Any integer between -100 and 100.
/// </param>
/// <returns>
/// The current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
/// </returns>
public ImageFactory Brightness(int percentage)
{
if (this.ShouldProcess)
{
// Sanitize the input.
if (percentage > 100 || percentage < -100)
{
percentage = 0;
}
Brightness brightness = new Brightness {
DynamicParameter = percentage
};
this.Image = brightness.ProcessImage(this);
}
return(this);
}