如何计算Win2D一段文字的大小 [英] How to calculate the size of a piece of text in Win2D

问题描述

我使用Win2D，我想提请其动态调整，以适应任何文字恰好是它的形状编写应用程序的Windows 10。

I am writing an application for Windows 10 using Win2D and I'm trying to draw a shape which scales dynamically to fit whatever text happens to be in it.

我想要做的是制定出一个特定的字符串会多大用给定的CanvasTextFormat，然后用它来设置形状的大小。

What I'd like to do is work out how big a particular string would be with a given CanvasTextFormat and then use that to set the size of the shape.

我的问题是我似乎无法找到工作了字符串将有多大的一种方式？

My problem is I can't seem to find a way of working out how big the string will be?

推荐答案

请参阅下面的代码来计算所需尺寸（寻找theRectYouAreLookingFor）

See code below to calculate the required size (look for "theRectYouAreLookingFor")

private void CanvasControl_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
    CanvasDrawingSession drawingSession = args.DrawingSession;
    float xLoc = 100.0f;
    float yLoc = 100.0f;
    CanvasTextFormat format = new CanvasTextFormat {FontSize = 30.0f, WordWrapping = CanvasWordWrapping.NoWrap};        
    CanvasTextLayout textLayout = new CanvasTextLayout(drawingSession, "Hello World!", format, 0.0f, 0.0f);
    Rect theRectYouAreLookingFor = new Rect(xLoc + textLayout.DrawBounds.X, yLoc + textLayout.DrawBounds.Y, textLayout.DrawBounds.Width, textLayout.DrawBounds.Height);
    drawingSession.DrawRectangle(theRectYouAreLookingFor, Colors.Green, 1.0f);
    drawingSession.DrawTextLayout(textLayout, xLoc, yLoc, Colors.Yellow);
}

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