在Haskell的GTK的DrawingArea上绘制文本 [英] Drawing text on GTK's DrawingArea in Haskell

问题描述

我有一个 DrawingArea ，我可以使用 drawRectangle 和的drawLine 。如何在该区域上绘制文字？我最感兴趣的是能够快速输出单行文本的东西。

I have a DrawingArea onto which I can draw using primitives such as drawRectangle and drawLine. How do I draw text onto that area? I'm most interested in something that quickly outputs a single line of text.

Graphics.UI.Gtk.Gdk.Drawable.layoutLine

Graphics.UI.Gtk.Gdk.Drawable.layoutLine seems to be what I want, but it wants a Graphics.Rendering.Pango.Layout.LayoutLine as input. How do I construct that LayoutLine?

有没有比这样更好的选择？

Are there better alternatives than doing it this way?

谢谢！

Thanks!

推荐答案

我已经找到了用Pango做这件事的方法。 / p>

I've found the way to do this with Pango.

layout <- widgetCreateLayout drawAreaWidget stringToDraw

然后，您可以使用这个新创建的布局，其中包含 drawLayout 和 drawLayoutWithColors 。

Then you can use this newly-created layout with functions such as drawLayout and drawLayoutWithColors.

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