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Tests: Add a test for LibPDF pattern rendering

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This is based largely on Adobe's EXAMPLE 2 on p176 of the specification,
manually edited slightly and then cleaned up with mutool.

https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008.pdf
This commit is contained in:
Kyle Pereira 2023-12-07 13:08:56 +00:00 committed by Andreas Kling
parent 8c7fc4fe6c
commit 60c7ff9db1
2 changed files with 127 additions and 0 deletions
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1
Tests/LibPDF/CMakeLists.txt
View file

@ -15,6 +15,7 @@ set(TEST_FILES
non-linearized.pdf
oss-fuzz-testcase-62065.pdf
password-is-sup.pdf
pattern.pdf
text.pdf
type1.pdf
type3.pdf

126
Tests/LibPDF/pattern.pdf Normal file
View file

@ -0,0 +1,126 @@
%PDF-1.7
%µ¶
1 0 obj
<</Pages 3 0 R/Type/Catalog>>
endobj
3 0 obj
<</Count 1/Kids[5 0 R]/Type/Pages>>
endobj
5 0 obj
<</Type/Page/Parent 3 0 R/Resources 10 0 R/Contents 30 0 R/MediaBox[0 0 225 225]>>
endobj
10 0 obj
<</Pattern<</P1 15 0 R>>/Font<</F1 20 0 R>>>>
endobj
15 0 obj
<</Type/Pattern/PatternType 1/PaintType 1/TilingType 2/BBox[0 0 100 100]/XStep 100/YStep 100/Matrix[.4 0 0 .4 0 0]/Length 632>>
stream
BT % Begin text object
0.0 -0.05 TD % Move text position
/F1 1 Tf % Set text font and size
55 0 0 55 7.1771 10.4414 Tm % Set text matrix
0 Tc % Set character spacing
0 Tw % Set word spacing
1.0 0.0 0.0 rg % Set nonstroking colour to red
( a ) Tj % Show spade glyph
0.7478 -0.007 TD % Move text position
0.0 1.0 0.0 rg % Set nonstroking colour to green
( b ) Tj % Show heart glyph
-0.7323 0.7813 TD % Move text position
0.0 0.0 1.0 rg % Set nonstroking colour to blue
( c ) Tj % Show diamond glyph
0.6913 0.007 TD % Move text position
0.0 0.0 0.0 rg % Set nonstroking colour to black
( d ) Tj % Show club glyph
ET % End text object
endstream
endobj
20 0 obj
<</Type/Font/Subtype/Type1/Encoding 21 0 R/BaseFont/Helvevtica>>
endobj
21 0 obj
<</Type/Encoding/Differences[1/a109/a110/a111/a112]>>
endobj
30 0 obj
<</Length 1086>>
stream
0.0 G % Set stroking colour to black
1.0 1.0 0.0 rg % Set nonstroking colour to yellow
25 175 175 -150 re % Construct rectangular path
f % Fill path
/Pattern cs % Set pattern colour space
/P1 scn % Set pattern as nonstroking colour
99.92 49.92 m % Start new path
99.92 77.52 77.52 99.92 49.92 99.92 c % Construct lower-left circle
22.32 99.92 -0.08 77.52 -0.08 49.92 c
-0.08 22.32 22.32 -0.08 49.92 -0.08 c
77.52 -0.08 99.92 22.32 99.92 49.92 c
B % Fill and stroke path
224.96 49.92 m % Start new path
224.96 77.52 202.56 99.92 174.96 99.92 c % Construct lower-right circle
147.36 99.92 124.96 77.52 124.96 49.92 c
124.96 22.32 147.36 -0.08 174.96 -0.08 c
202.56 -0.08 224.96 22.32 224.96 49.92 c
B % Fill and stroke path
87.56 201.70 m % Start new path
63.66 187.90 55.46 157.32 69.26 133.40 c % Construct upper circle
83.06 109.50 113.66 101.30 137.56 115.10 c
161.46 128.90 169.66 159.50 155.86 183.40 c
142.06 207.30 111.46 215.50 87.56 201.70 c
B % Fill and stroke path
50 50 m % Start new path
175 50 l % Construct triangular path
112.5 158.253 l
b % Close, fill, and stroke path
endstream
endobj
xref
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trailer
<</Size 31/Root 1 0 R>>
startxref
2362
%%EOF