public string CropAndSave(GalleryMediaModel model)
{
FileStream stream = null;
Bitmap sized = null;
Bitmap croped = null;
try
{
var parameters = model.Parameters;
var rotation = parameters.Rotation;
var previewBounds = parameters.PreviewBounds;
var cropBounds = parameters.CropBounds;
var options = new BitmapFactory.Options {
InJustDecodeBounds = true
};
BitmapFactory.DecodeFile(model.Path, options);
var pWidth = (int)Math.Round((previewBounds.Right - previewBounds.Left) / parameters.Scale);
var dZ = (rotation % 180 > 0 ? options.OutHeight : options.OutWidth) / (float)pWidth;
var width = (int)Math.Round((cropBounds.Right - cropBounds.Left) * dZ / parameters.Scale);
var height = (int)Math.Round((cropBounds.Bottom - cropBounds.Top) * dZ / parameters.Scale);
var x = (int)Math.Max(Math.Round(-previewBounds.Left * dZ / parameters.Scale), 0);
var y = (int)Math.Max(Math.Round(-previewBounds.Top * dZ / parameters.Scale), 0);
var sampleSize = BitmapUtils.CalculateInSampleSize(width, height, BitmapUtils.MaxImageSize, BitmapUtils.MaxImageSize);
width = width / sampleSize;
height = height / sampleSize;
x = x / sampleSize;
y = y / sampleSize;
options.InSampleSize = sampleSize;
options.InJustDecodeBounds = false;
options.InPreferQualityOverSpeed = true;
sized = BitmapFactory.DecodeFile(model.Path, options);
switch (rotation)
{
case 90:
{
var b = width;
width = height;
height = b;
b = x;
x = y;
y = sized.Height - b - height;
break;
}
case 180:
{
x = sized.Width - width - x;
y = sized.Height - height - y;
break;
}
case 270:
{
var b = width;
width = height;
height = b;
b = y;
y = x;
x = sized.Width - b - width;
break;
}
}
x = Math.Max(x, 0);
y = Math.Max(y, 0);
if (x + width > sized.Width)
{
width = sized.Width - x;
}
if (y + height > sized.Height)
{
height = sized.Height - y;
}
var matrix = new Matrix();
matrix.SetRotate(rotation);
croped = Bitmap.CreateBitmap(sized, x, y, width, height, matrix, true);
var directory = new Java.IO.File(Context.CacheDir, Constants.Steepshot);
if (!directory.Exists())
{
directory.Mkdirs();
}
var outPath = $"{directory}/{Guid.NewGuid()}.jpeg";
stream = new FileStream(outPath, FileMode.Create);
croped.Compress(Bitmap.CompressFormat.Jpeg, 99, stream);
var args = new Dictionary <string, string>
{
{ ExifInterface.TagImageLength, croped.Height.ToString() },
{ ExifInterface.TagImageWidth, croped.Width.ToString() },
{ ExifInterface.TagOrientation, "1" },
};
BitmapUtils.CopyExif(model.Path, outPath, args);
return(outPath);
}
catch (Exception ex)
{
AppSettings.Logger.Error(ex);
return(string.Empty);
}
finally
{
stream?.Dispose();
BitmapUtils.ReleaseBitmap(sized);
BitmapUtils.ReleaseBitmap(croped);
}
}