多行WPF FormattedText中特定字符的坐标 [英] Coordinates of a specific character in a multi-lined WPF FormattedText

问题描述

如何在多行WPF FormattedText中获取特定字符的位置（xy坐标）？

我的文本可以包含斜体部分，粗体部分，不同的字体，不同的字体大小，不同的路线等，我需要得到第30个字符的坐标，可能在第3行。

有是通过使用我可以从FormattedText（BuildGeometry）构建的几何体的Children（单词）的Children（字母）的某种半工作技巧，但这并不总是奏效，因为某些字形合并成单个（Point，Int32，Int32）的格式化文本.BuildHighlightGeometry，方法（像fi：仅限于一个几何）。

确实如此。

How to get the position (x y coordinates) of a specific character in a multi-lined WPF FormattedText ?

My text could contain italic parts, bold parts, different fonts, different font sizes, different alignments, etc. and I need to get the coordinates of, say, the 30st character, which could be on the 3rd line.

There is some kind of a half working trick by using the Children (letters) of Children (words) of the Geometry that I can get built from the FormattedText (BuildGeometry), but this does not always work, because some Glyphs are merged in a single geometry (like for "fi": one geometry only).

解决方案

FormattedText.BuildHighlightGeometry, method (Point, Int32, Int32) does exactly that.

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