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private void ShowSelectedPicture(string path)
{
FileStream fs = File.OpenRead(path); //OpenRead
int filelength = 0;
filelength = (int)fs.Length; //获得文件长度
Byte[] image = new Byte[filelength]; //建立一个字节数组
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.BeginInit();
bitmapImage.StreamSource =new MemoryStream(image );
bitmapImage.EndInit();
var pictureWindow = new PictureWindow();//自己创建的窗口
pictureWindow.myImage.Source = bitmapImage;//myImage窗口中的图片空间
//pictureWindow.myImage.Width = bitmapImage.PixelWidth;
//pictureWindow.myImage.Height = bitmapImage.PixelHeight;
pictureWindow.WindowStartupLocation = WindowStartupLocation.CenterScreen;
pictureWindow.ShowDialog();
}
private void MyImage_OnMouseWheel(object sender, MouseWheelEventArgs e) { double ScaleX = 0; double ScaleY = 0; double dbl_ZoomX = ((ScaleTransform)(((TransformGroup)(((UIElement)(this.myImage)).RenderTransform)).Children[0])).ScaleX; double dbl_ZoomY = ((ScaleTransform)(((TransformGroup)(((UIElement)(this.myImage)).RenderTransform)).Children[0])).ScaleY; ((ScaleTransform)(((TransformGroup)(((UIElement)(this.myImage)).RenderTransform)).Children[0])).CenterX = e.GetPosition(this.myImage).X; ((ScaleTransform)(((TransformGroup)(((UIElement)(this.myImage)).RenderTransform)).Children[0])).CenterY = e.GetPosition(this.myImage).Y;
if (e.Delta < 0) { ScaleX = dbl_ZoomX - 0.1 < 0.2 ? 0.1 : dbl_ZoomX - 0.1; ScaleY = dbl_ZoomY - 0.1 < 0.2 ? 0.1 : dbl_ZoomY - 0.1; } else if (e.Delta > 0) { ScaleX = dbl_ZoomX + 0.1 > 10.0 ? 10.0 : dbl_ZoomX + 0.1; ScaleY = dbl_ZoomY + 0.1 > 10.0 ? 10.0 : dbl_ZoomY + 0.1; }
((ScaleTransform)(((TransformGroup)(((UIElement)(this.myImage)).RenderTransform)).Children[0])).ScaleX = ScaleX; ((ScaleTransform)(((TransformGroup)(((UIElement)(this.myImage)).RenderTransform)).Children[0])).ScaleY = ScaleY; }
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