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Letter spacing: minor comment improvements

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This commit is contained in:
MarcinZiabek
2022-12-06 23:23:19 +01:00
parent ca4352addd
commit 9bef7d64d5
1 changed files with 5 additions and 2 deletions
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QuestPDF/Drawing/TextShaper.cs
+5 -2
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@@ -47,12 +47,14 @@ namespace QuestPDF.Drawing
var xOffset = 0f;
var yOffset = 0f;
uint lastCluster = glyphInfos.LastOrDefault().Cluster;
// used for letter spacing calculation
var 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.
// letter spacing should be applied between glyph clusters, not between individual glyphs,
// different cluster id indicates the end of the glyph cluster
if (lastCluster != glyphInfos[i].Cluster)
{
lastCluster = glyphInfos[i].Cluster;
@@ -65,6 +67,7 @@ namespace QuestPDF.Drawing
Position = new SKPoint(xOffset + glyphPositions[i].XOffset * scaleX, yOffset - glyphPositions[i].YOffset * scaleY),
Width = glyphPositions[i].XAdvance * scaleX
};
xOffset += glyphPositions[i].XAdvance * scaleX;
yOffset += glyphPositions[i].YAdvance * scaleY;
}