prevent negative point size for fonts

2025-10-14 19:05:01 +08:00 · 2020-01-10 14:40:28 +00:00
parent 6c1e3c76a8
commit 41cc7abd1b
1 changed files with 5 additions and 0 deletions
--- a/src/UglyToad.PdfPig/Graphics/ContentStreamProcessor.cs
+++ b/src/UglyToad.PdfPig/Graphics/ContentStreamProcessor.cs
@@ -161,6 +161,11 @@
            // see: https://stackoverflow.com/questions/48010235/pdf-specification-get-font-size-in-points
            var pointSize = Math.Round(rotation.Rotate(transformationMatrix).Multiply(TextMatrices.TextMatrix).Multiply(fontSize).A, 2);

+            if (pointSize < 0)
+            {
+                pointSize *= -1;
+            }
+
            while (bytes.MoveNext())
            {
                var code = font.ReadCharacterCode(bytes, out int codeLength);