具有最近邻居的位图导致撕裂

Question

我创建了一个生成Code 39条形码的测试应用程序.问题是当我在屏幕上显示条形码时,它会模糊或被撕裂.如果我使用BitmapScalingMode其他任何东西NearestNeighbor,我会得到模糊的条形码.当我使用时NearestNeighbor,我得到如下所示的斜线斜线.对角线仅在我调整窗口大小时出现.(如果我停在正确的位置,它会停留在那里.)图像本身不会改变大小,而是在我调整窗口大小时在屏幕上移动.

我也尝试过使用RenderOptions.EdgeMode="Aliased",但它似乎没有任何影响......

撕裂/模糊/正确

WPF示例代码:

<Border BorderBrush="Black" BorderThickness="1" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,50,0,0">
    <Image x:Name="imgBarcode" Stretch="Fill" RenderOptions.BitmapScalingMode="HighQuality" RenderOptions.EdgeMode="Aliased" />
</Border>

图像生成:

imgBarcode.Source = loadBitmap(c.Generate(barcodeText.Text));
imgBarcode.Width = c.GetWidth();
imgBarcode.Height = c.GetHeight();

样本生成代码:

Bitmap bmp = new Bitmap(width, height);
using (Graphics gfx = Graphics.FromImage(bmp))
using (SolidBrush black = new SolidBrush(Color.Black))
using (SolidBrush white = new SolidBrush(Color.White))
{
    // Start the barcode:
    addBar(gfx, black, white, '*');

    foreach (char c in barcode)
    {
        addCharacter(gfx, black, white, c);
    }

    // End the barcode:
    addBar(gfx, black, white, '*');
}

样本矩形添加:

g.FillRectangle(white, left, top, narrow, height);
left += narrow;

加载从另一个StackOverflow问题中获取的位图:

[DllImport("gdi32")]
static extern int DeleteObject(IntPtr o);

public static BitmapSource loadBitmap(System.Drawing.Bitmap source)
{
    IntPtr ip = source.GetHbitmap();
    BitmapSource bs = null;
    try
    {
        bs = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(ip,
           IntPtr.Zero, Int32Rect.Empty,
           System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());
    }
    finally
    {
        DeleteObject(ip);
    }

    return bs;
}

Answer 1

UseLayoutRounding="True"在主窗口上进行设置应该可以解决这个问题。