public void DrawImage(Image image, Rectangle to, int fromx, int fromy, int fromw, int fromh, GraphicsUnit gu, ImageAttributes ia)
{
APaint.Flags = (Android.Graphics.PaintFlags) 0;
var sa = new Android.Graphics.Rect(fromx, fromy, fromx + fromw, fromy + fromh);
var da = to.ToA();
Android.Graphics.Paint p = null;
Android.Graphics.ColorMatrixColorFilter cmf = null;
if (ia != null && ia.GetColorMatrix() != null)
{
p = new Android.Graphics.Paint(APaint);
var values = ia.GetColorMatrix().Matrix;
float[] v2 = values[0].Concat(values[1]).Concat(values[2]).Concat(values[3]).ToArray();
cmf = new Android.Graphics.ColorMatrixColorFilter(v2);
p.SetColorFilter(cmf);
}
ACanvas.DrawBitmap((image as Bitmap).ABitmap, sa, da, p == null ? APaint : p);
if (p != null)
{
p.Dispose();
}
if (cmf != null)
{
cmf.Dispose();
}
da.Dispose();
sa.Dispose();
}
//Negativ
private Android.Graphics.Bitmap createInverse(Android.Graphics.Bitmap src)
{
float[] colorMatrix_Negative =
{
-1.0f, 0, 0, 0, 255, //red
0, -1.0f, 0, 0, 255, //green
0, 0, -1.0f, 0, 255, //blue
0, 0, 0, 1.0f, 0 //alpha
};
Android.Graphics.Paint MyPaint_Normal = new Android.Graphics.Paint();
Android.Graphics.Paint MyPaint_Negative = new Android.Graphics.Paint();
Android.Graphics.ColorFilter colorFilter_Negative = new Android.Graphics.ColorMatrixColorFilter(colorMatrix_Negative);
MyPaint_Negative.SetColorFilter(colorFilter_Negative);
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);
MyPaint_Negative.SetColorFilter(colorFilter_Negative);
canvas.DrawBitmap(src, 0, 0, MyPaint_Negative);
return(bitmap);
return(bitmap);
}
//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);
}
public void DrawImage(Image image, Rectangle to, int fromx, int fromy, int fromw, int fromh, GraphicsUnit gu, ImageAttributes ia)
{
Flush();
APaint.Flags = (Android.Graphics.PaintFlags)0;
var sa = new Android.Graphics.Rect(fromx, fromy, fromx+fromw, fromy+fromh);
var da = to.ToA();
Android.Graphics.Paint p = null;
Android.Graphics.ColorMatrixColorFilter cmf = null;
if (ia != null && ia.GetColorMatrix() != null){
p = new Android.Graphics.Paint(APaint);
var values = ia.GetColorMatrix().Matrix;
float[] v2 = values[0].Concat(values[1]).Concat(values[2]).Concat(values[3]).ToArray();
cmf = new Android.Graphics.ColorMatrixColorFilter(v2);
p.SetColorFilter(cmf);
}
ACanvas.DrawBitmap((image as Bitmap).ABitmap, sa, da, p == null ? APaint : p);
if (p != null) p.Dispose();
if (cmf != null) cmf.Dispose();
da.Dispose();
sa.Dispose();
}
