Question

我正在使用WPF。人类Web设计人员创建了一个包含多个DrawingImage对象的.xaml文件。这用于在应用程序中显示图标。我的问题是，如何将此转换为DrawingImage？我尝试过使用Inkscape，但这会创建一个Canvas。我也试过Blend，但这会创建一个DrawingBrush。以下是设计师创建的示例：

[i, j]

Answer 1

我建议您将其作为资源DrawingBrush。但是在后面的代码中将其转换为DrawingImage。

var dBrush = Application.Current.Resources["key"] as DrawingBrush;
var dImage = new DrawingImage();
dImage.Drawing = dBrush.Drawing;

如果你要做很多事情，那么建立一个转换器以避免冗余代码。

#region class DrawingImageConverter
/// <summary>
/// Converter class to generate a DrawingImage from a URI, even if it points to a DrawingBrush.
/// </summary>
public class DrawingImageConverter : System.Windows.Data.IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        string path = parameter.ToString();

        System.Windows.Resources.StreamResourceInfo sri = System.Windows.Application.GetResourceStream(new Uri(path, UriKind.Relative));
        if (sri != null)
        {
            using (System.IO.Stream stream = sri.Stream)
            {
                var logo = System.Windows.Markup.XamlReader.Load(stream);

                if (null != (logo as System.Windows.Media.DrawingImage))
                {
                    return logo;
                }
                if (null != (logo as System.Windows.Media.DrawingBrush))
                {
                    var img = new System.Windows.Media.DrawingImage();
                    img.Drawing = (logo as System.Windows.Media.DrawingBrush).Drawing;
                    return img;
                }

                throw new Exception("Resource unknown type : " + path);
            }
        }

        throw new Exception("Resource not found : " + path);
    }
    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}
#endregion class DrawingImageConverter

用法可能是这样的：

<Image x:Name="ImageLogo" Source="{Binding Converter={StaticResource DrawingImageConverter}, ConverterParameter=images/logo.xaml}"/>

将图像转换为DrawingImage

1 个答案: