private static BitmapLayer ChangeBackgroundColor(BitmapLayer source, Color color)
{
Color controlColor = new Color();
int bytesPerPixel = (source.Bitmap.Format.BitsPerPixel + 7) / 8;
int stride = bytesPerPixel * source.Bitmap.PixelWidth;
byte[] array = new byte[stride * source.Bitmap.PixelHeight];
source.Bitmap.CopyPixels(array, stride, 0);
for (int i = 0; i < array.Length; i += 4)
{
if ((array[i] == controlColor.B &&
array[i + 1] == controlColor.G &&
array[i + 2] == controlColor.R &&
array[i + 3] == controlColor.A))
{
array[i] = color.B;
array[i + 1] = color.G;
array[i + 2] = color.R;
array[i + 3] = color.A;
}
}
source.Bitmap.WritePixels(new Int32Rect(0, 0, source.Bitmap.PixelWidth, source.Bitmap.PixelHeight), array, stride, 0);
return(source);
}
public static List <BitmapLayer> SyncMask(List <BitmapLayer> bitmapLayers, BrushType brush, Color color, int diameter, int opacity)
{
BitmapLayer bitmapLayer = new BitmapLayer(bitmapLayers[0].LayerHeight, bitmapLayers[0].LayerWidth);
bitmapLayer.UpdateMask(brush, color, diameter, opacity);
for (int i = 0; i < bitmapLayers.Count; i++)
{
bitmapLayers[i].Stride = bitmapLayer.Stride;
bitmapLayers[i].MaskBitmap = bitmapLayer.MaskBitmap;
bitmapLayers[i].Mask = bitmapLayer.Mask;
}
return(bitmapLayers);
}
public static void SaveImageWithFormat(BitmapLayer bitmapLayer, string fileName, ImageFileFormat imageFileFormat)
{
string fileExtension = imageFileFormat.ToString().ToLower();
fileName += $".{fileExtension}";
using (FileStream stream = new FileStream(fileName, FileMode.Create))
{
BitmapEncoder encoder = null;
switch (imageFileFormat)
{
case ImageFileFormat.BMP:
{
encoder = new BmpBitmapEncoder();
bitmapLayer = ChangeBackgroundColor(bitmapLayer, Colors.White);
break;
}
case ImageFileFormat.JPEG:
{
encoder = new JpegBitmapEncoder();
bitmapLayer = ChangeBackgroundColor(bitmapLayer, Colors.White);
break;
}
case ImageFileFormat.PNG:
{
encoder = new PngBitmapEncoder();
break;
}
case ImageFileFormat.TIFF:
{
encoder = new TiffBitmapEncoder();
break;
}
}
encoder.Frames.Add(BitmapFrame.Create(bitmapLayer.GetWorkspaceImage().Clone()));
encoder.Save(stream);
}
}
private BitmapLayer(BitmapLayer bitmapLayer) : this(bitmapLayer.LayerHeight, bitmapLayer.LayerWidth)
{
this.Bitmap = bitmapLayer.Bitmap.Clone();
}