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apply letter spacing to each unicode cluster

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This commit is contained in:
Bennet Bo Fenner
2022-11-18 15:34:30 +01:00
parent e4f8243c9b
commit 19ff9062ad
1 changed files with 11 additions and 4 deletions
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QuestPDF/Drawing/TextShaper.cs
+11 -4
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@@ -41,18 +41,25 @@ namespace QuestPDF.Drawing
var xOffset = 0f;
var yOffset = 0f;
uint lastCluster = glyphInfos.LastOrDefault().Cluster;
var glyphs = new ShapedGlyph[length];
for (var i = 0; i < length; i++)
{
//We need to advance xOffset by the current letter spacing after each unicode cluster.
if (lastCluster != glyphInfos[i].Cluster)
{
lastCluster = glyphInfos[i].Cluster;
xOffset += TextStyle.LetterSpacing ?? 0;
}
glyphs[i] = new ShapedGlyph
{
Codepoint = (ushort)glyphInfos[i].Codepoint,
Position = new SKPoint(xOffset + glyphPositions[i].XOffset * scaleX, yOffset - glyphPositions[i].YOffset * scaleY),
Width = glyphPositions[i].XAdvance * scaleX
};
xOffset += (glyphPositions[i].XAdvance * scaleX) + TextStyle.LetterSpacing ?? 0;
};
xOffset += glyphPositions[i].XAdvance * scaleX;
yOffset += glyphPositions[i].YAdvance * scaleY;
}