与DrawingContext.DrawText的垂直对齐 [英] Vertical alignment with DrawingContext.DrawText

问题描述

我需要使文本垂直对齐顶部，底部或中心。有用于水平对齐的FormattedText.TextAlignment属性，但没有用于垂直对齐的属性。

I need to align my text vertically to either the top or bottom or center. There's the FormattedText.TextAlignment property for horizontal alignment, but nothing for vertical alignment.

要弄清楚Google不了解的内容：我对将文本旋转到垂直流动。我知道该怎么做。我只想让（可能是多行）文本在中心点上方或下方或中间对齐。

To make it clear what Google doesn't understand: I am not interested in rotating text to flow vertically. I know how to do that. I just want to have (possibly multi-line) text to align above or below the centre point or in the middle of it.

有人知道怎么做吗？

推荐答案

如果您使用的是 DrawingContext.DrawText 方法，以指定 Point 的位置。

If you're using the DrawingContext.DrawText method , you have to specify a Point where the text will be positioned. That means you have to calculate the alignment yourself.

小例子，假设 centerPoint 是您想要文本的点并与 drawingContext 对齐的是 DrawingContext ，使文本在该点上方居中：

Small example, assuming centerPoint is the point you want your text to align to and drawingContext is the DrawingContext, centering the text above that point:

Typeface typeface = new Typeface(new FontFamily("Segoe UI"), FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
FormattedText formattedText = new FormattedText("Text to render", CultureInfo.CurrentUICulture, FlowDirection.LeftToRight, typeFace, 16, Brushes.Black);

Point textLocation = new Point(centerPoint.X - formattedText.WidthIncludingTrailingWhitespace / 2, center.Y - formattedText.Height);
drawingContext.DrawText(formattedText, textLocation);

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