c#窗体实现毛玻璃效果
时间: 2023-07-27 10:08:57 浏览: 155
要实现毛玻璃效果,可以通过以下步骤来完成:
1. 在窗体上添加一个Panel控件,并将其Dock属性设置为Fill,以充满整个窗体。
2. 在Panel控件中添加一个PictureBox控件,并将其Dock属性设置为Fill,以充满整个Panel控件。
3. 在PictureBox控件中加载需要进行毛玻璃效果的图片。
4. 在窗体的Load事件中添加以下代码:
```
private void Form1_Load(object sender, EventArgs e)
{
Bitmap bmp = new Bitmap(pictureBox1.Image);
ImageFilter filter = new GaussianBlurFilter(10);
pictureBox1.Image = filter.ProcessImage(bmp);
}
```
5. 在程序中添加以下类:
```
public abstract class ImageFilter
{
public abstract Bitmap ProcessImage(Bitmap image);
}
public class GaussianBlurFilter : ImageFilter
{
private int radius;
public GaussianBlurFilter(int radius)
{
this.radius = radius;
}
public override Bitmap ProcessImage(Bitmap image)
{
Bitmap blurred = new Bitmap(image.Width, image.Height);
using (Graphics graphics = Graphics.FromImage(blurred))
{
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
ImageAttributes attributes = new ImageAttributes();
attributes.SetWrapMode(WrapMode.TileFlipXY);
int[] weights = CalculateWeights(radius);
for (int y = -radius; y <= radius; y++)
{
for (int x = -radius; x <= radius; x++)
{
int index = (y + radius) * (2 * radius + 1) + x + radius;
float weight = (float)weights[index] / 256f;
ColorMatrix matrix = new ColorMatrix(new float[][] {
new float[] { weight, 0, 0, 0, 0 },
new float[] { 0, weight, 0, 0, 0 },
new float[] { 0, 0, weight, 0, 0 },
new float[] { 0, 0, 0, 1, 0 },
new float[] { 0, 0, 0, 0, 1 }
});
attributes.SetColorMatrix(matrix);
graphics.DrawImage(image, rectangle, x, y, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
}
}
}
return blurred;
}
private int[] CalculateWeights(int radius)
{
int[] weights = new int[radius * 2 + 1];
double sigma = radius / 3.0;
double twoSigmaSquare = 2.0 * sigma * sigma;
double root = Math.Sqrt(twoSigmaSquare * Math.PI);
int total = 0;
for (int i = -radius; i <= radius; i++)
{
double distance = i * i;
int index = i + radius;
weights[index] = (int)((Math.Exp(-distance / twoSigmaSquare) / root) * 256);
total += weights[index];
}
for (int i = 0; i < weights.Length; i++)
{
weights[i] = (weights[i] * 256) / total;
}
return weights;
}
}
```
这些代码将创建一个抽象类ImageFilter,以及一个继承自它的GaussianBlurFilter类。GaussianBlurFilter类将实现高斯模糊算法,从而实现毛玻璃效果。
这些代码将在窗体加载时调用GaussianBlurFilter类,并将其处理后的图像作为PictureBox控件的图像显示出来,从而实现毛玻璃效果。
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