//sepia si prietenii
private Android.Graphics.Bitmap createSepia_and_RBG(Android.Graphics.Bitmap src, int choise)
{
Android.Graphics.ColorMatrix colorMatrix_Sepia = new Android.Graphics.ColorMatrix();
colorMatrix_Sepia.SetSaturation(0);
Android.Graphics.ColorMatrix colorScale = new Android.Graphics.ColorMatrix();
if (choise == 1)
{
colorScale.SetScale(1, 1f, 0.7f, 1); //sepia
}
else
if (choise == 2)
{
colorScale.SetScale(1, 1f, 2f, 1); //albastru
}
else
if (choise == 3)
{
colorScale.SetScale(1, 2f, 1f, 1); //verde
}
else
if (choise == 4)
{
colorScale.SetScale(2f, 1, 1f, 1); //rosu
}
//0.7 sepia ch =1
//0.4 ceva verziu
//2 albastru fain
//5 albastru neon
colorMatrix_Sepia.PostConcat(colorScale);
Android.Graphics.ColorFilter ColorFilter_Sepia = new Android.Graphics.ColorMatrixColorFilter(
colorMatrix_Sepia);
Android.Graphics.Bitmap bitmap = Android.Graphics.Bitmap.CreateBitmap(src.Width, src.Height,
Android.Graphics.Bitmap.Config.Argb8888);
Android.Graphics.Canvas canvas = new Android.Graphics.Canvas(bitmap);
Android.Graphics.Paint paint = new Android.Graphics.Paint();
paint.SetColorFilter(ColorFilter_Sepia);
canvas.DrawBitmap(src, 0, 0, paint);
return(bitmap);
}
//Gray Filter
public Android.Graphics.Bitmap toGrayscale(Android.Graphics.Bitmap bmpOriginal)
{
int width, height;
height = bmpOriginal.Height;
width = bmpOriginal.Width;
Android.Graphics.Bitmap bmpGrayscale = Android.Graphics.Bitmap.CreateBitmap(width, height, Android.Graphics.Bitmap.Config.Argb8888);
Android.Graphics.Canvas c = new Android.Graphics.Canvas(bmpGrayscale);
Android.Graphics.Paint paint = new Android.Graphics.Paint();
Android.Graphics.ColorMatrix cm = new Android.Graphics.ColorMatrix();
cm.SetSaturation(0);
Android.Graphics.ColorMatrixColorFilter f = new Android.Graphics.ColorMatrixColorFilter(cm);
paint.SetColorFilter(f);
c.DrawBitmap(bmpOriginal, 0, 0, paint);
return(bmpGrayscale);
}