Add a test case for Type3 glyphs with negative width.
Illustate a case where 3 glyphs should be drawn from right to left, but
only the first glyph appears.
Bug: chromium:1128284
Change-Id: I979e38155338af52b4e2cc491f5b90bb75c6b3b7
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/73750
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Hui Yingst <nigi@chromium.org>
diff --git a/testing/resources/pixel/bug_1128284.in b/testing/resources/pixel/bug_1128284.in
new file mode 100644
index 0000000..0dfda97
--- /dev/null
+++ b/testing/resources/pixel/bug_1128284.in
@@ -0,0 +1,94 @@
+{{header}}
+{{object 1 0}} <<
+ /Type /Catalog
+ /Pages 2 0 R
+>>
+endobj
+{{object 2 0}} <<
+ /Type /Pages
+ /Count 1
+ /Kids [3 0 R]
+>>
+endobj
+{{object 3 0}} <<
+ /Type /Page
+ /Parent 2 0 R
+ /Contents 4 0 R
+ /Resources <<
+ /Font <<
+ /F1 5 0 R
+ >>
+ >>
+ /MediaBox [0 0 200 200]
+>>
+endobj
+{{object 4 0}} <<
+ {{streamlen}}
+>>
+stream
+0 g
+BT
+/F1 .1 Tf 1 0 0 1 100 100 Tm
+[(a)16000(b)17000(c)]TJ
+ET
+endstream
+endobj
+{{object 5 0}} <<
+ /Type /Font
+ /Subtype /Type3
+ /CharProcs <<
+ /a97 6 0 R
+ /a98 7 0 R
+ /a99 6 0 R
+ >>
+ /Encoding 8 0 R
+ /FirstChar 97
+ /FontBBox [0 0 100 100]
+ /LastChar 99
+ /Widths [-100 -50 -75]
+>>
+endobj
+{{object 6 0}} <<
+ {{streamlen}}
+>>
+stream
+q
+6 0 0 48 6 0 cm
+BI
+/W 6
+/H 48
+/BPC 1
+/IM true
+ID
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+EI
+Q
+endstream
+endobj
+{{object 7 0}} <<
+ {{streamlen}}
+>>
+stream
+q
+6 0 0 48 6 0 cm
+BI
+/W 6
+/H 48
+/BPC 1
+/IM true
+ID
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+EI
+Q
+endstream
+endobj
+{{object 8 0}} <<
+ /Type /Encoding
+ /BaseEncoding /WinAnsiEncoding
+ /Differences [97 /a97 /a98 /a99]
+>>
+endobj
+{{xref}}
+{{trailer}}
+{{startxref}}
+%%EOF
diff --git a/testing/resources/pixel/bug_1128284_expected.pdf.0.png b/testing/resources/pixel/bug_1128284_expected.pdf.0.png
new file mode 100644
index 0000000..5405729
--- /dev/null
+++ b/testing/resources/pixel/bug_1128284_expected.pdf.0.png
Binary files differ
