From: Alexis Laferrière <alexis.laf@xymus.net>
Date: Mon, 17 Nov 2014 17:59:49 +0000 (-0500)
Subject: lib/tileset: intro `TileSetFont::text_width`
X-Git-Tag: v0.7.3~31^2~2
X-Git-Url: http://nitlanguage.org

lib/tileset: intro `TileSetFont::text_width`

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
---

diff --git a/lib/mnit/tileset.nit b/lib/mnit/tileset.nit
index 41d8a47..285ee55 100644
--- a/lib/mnit/tileset.nit
+++ b/lib/mnit/tileset.nit
@@ -88,6 +88,18 @@ class TileSetFont
 	# Distance between the beginning of a letter tile and the beginning of the next letter tile
 	fun advance: Numeric do return width.add(hspace)
 
+	# Distance between the beginning and the end of the longest line of `text`
+	fun text_width(text: String): Numeric
+	do
+		var lines = text.split('\n')
+		if lines.is_empty then return 0
+
+		var longest = 0
+		for line in lines do longest = longest.max(line.length)
+
+		return longest.mul(advance)
+	end
+
 	# Distance between the top of the first line to the bottom of the last line in `text`
 	fun text_height(text: Text): Numeric
 	do