[英]Snaps to pixel in RenderTargetBitmap
我编写以下代码以在RenderTargetBitmap中绘制文本:
DrawingVisual drawingVisual = new DrawingVisual();
using (DrawingContext drawingContext = drawingVisual.RenderOpen())
{
drawingContext.DrawText(new FormattedText("yes", CultureInfo.GetCultureInfo("en-us"),
FlowDirection.LeftToRight, new Typeface("Times New Roman"),
30, Brushes.Red), new Point(10, 10));
}
RenderTargetBitmap renderTargetBitmap = new RenderTargetBitmap(200, 200, 96, 96, PixelFormats.Pbgra32);
renderTargetBitmap.Render(drawingVisual);
image1.Source = renderTargetBitmap;//image1 is an Image control
结果是:
如何消除这种模糊效果? 此效果来自RenderTargetBitmap,而不是来自Image控件。
您可以使用DrawingImage
代替RenderTargetBitmap
var drawingGroup = new DrawingGroup();
using (var drawingContext = drawingGroup.Open())
{
drawingContext.DrawText(
new FormattedText("yes",
CultureInfo.GetCultureInfo("en-us"),
FlowDirection.LeftToRight,
new Typeface("Times New Roman"),
30,
Brushes.Red),
new Point(10, 10));
}
image1.Source = new DrawingImage(drawingGroup);
您需要创建DrawingGroup
并从此处打开DrawingContext
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