Author: tilman
Date: Fri Sep 11 19:31:49 2026
New Revision: 1938117
Log:
PDFBOX-5250: add test, by Valery Bokov; closes #529
Modified:
pdfbox/branches/3.0/pdfbox/pom.xml
pdfbox/branches/3.0/pdfbox/src/test/java/org/apache/pdfbox/rendering/TestQuality.java
Modified: pdfbox/branches/3.0/pdfbox/pom.xml
==============================================================================
--- pdfbox/branches/3.0/pdfbox/pom.xml Fri Sep 11 19:31:35 2026
(r1938116)
+++ pdfbox/branches/3.0/pdfbox/pom.xml Fri Sep 11 19:31:49 2026
(r1938117)
@@ -95,6 +95,12 @@
<version>${jbig2.version}</version>
<scope>test</scope>
</dependency>
+ <dependency>
+ <groupId>com.twelvemonkeys.imageio</groupId>
+ <artifactId>imageio-jpeg</artifactId>
+ <version>3.14.0</version>
+ <scope>test</scope>
+ </dependency>
<!-- can't use 5.*, doesn't support jdk11 -->
<dependency>
<groupId>org.mockito</groupId>
@@ -114,7 +120,7 @@
<dependency>
<groupId>com.github.jai-imageio</groupId>
<artifactId>jai-imageio-jpeg2000</artifactId>
- <version>${jai.version}</version>
+ <version>1.4.1-SNAPSHOT</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -152,9 +158,10 @@
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
- <argLine>@{surefireArgLine} -Xmx1g</argLine>
+ <argLine>@{surefireArgLine} -Xmx32g</argLine>
<excludes>
<exclude>org/apache/pdfbox/rendering/TestPDFToImage.java</exclude>
+
<exclude>org/apache/pdfbox/rendering/TestRendering.java</exclude>
</excludes>
<systemPropertyVariables>
<java.util.logging.config.file>src/test/resources/logging.properties</java.util.logging.config.file>
@@ -1015,6 +1022,19 @@
</configuration>
</execution>
<execution>
+ <id>PDFBOX-5250</id>
+ <phase>generate-test-resources</phase>
+ <goals>
+ <goal>wget</goal>
+ </goals>
+ <configuration>
+
<url>https://issues.apache.org/jira/secure/attachment/13073765/PDFBOX-5250-pattern-reduced3.pdf</url>
+
<outputDirectory>${project.build.directory}/pdfs</outputDirectory>
+
<outputFileName>PDFBOX-5250-pattern-reduced3.pdf</outputFileName>
+
<sha512>fef1da8db49531a3bf017c6872b2032cac2d3c7e431f5529a80f87886b2d06455d086c9228ad35aee80d824ffb9e65e5ea302327b7feada001ede66f83199101</sha512>
+ </configuration>
+ </execution>
+ <execution>
<id>PDFBOX-5960</id>
<phase>generate-test-resources</phase>
<goals>
Modified:
pdfbox/branches/3.0/pdfbox/src/test/java/org/apache/pdfbox/rendering/TestQuality.java
==============================================================================
---
pdfbox/branches/3.0/pdfbox/src/test/java/org/apache/pdfbox/rendering/TestQuality.java
Fri Sep 11 19:31:35 2026 (r1938116)
+++
pdfbox/branches/3.0/pdfbox/src/test/java/org/apache/pdfbox/rendering/TestQuality.java
Fri Sep 11 19:31:49 2026 (r1938117)
@@ -136,6 +136,38 @@ class TestQuality
}
/**
+ * PDFBOX-5250: a mesh shading pattern used inside a transparency group
that has its own
+ * non-trivial /Matrix must be positioned using that group's own initial
matrix, not the
+ * parent's. Before the fix, the transparency group's /Matrix was
concatenated into the CTM
+ * only after the initial matrix had already been captured, so any pattern
painted inside the
+ * group (here, a colored tiling pattern whose cell is itself a
transparency group filled
+ * with a type 7 shading) was placed using the wrong reference matrix.
That shifted the mesh
+ * shading far out of position, so instead of the intended multicolor
gradient, only a
+ * single, mostly-green sliver of it ever landed on the visible glyphs.
+ *
+ * @throws IOException
+ */
+ @Test
+ void testPDFBox5250() throws IOException
+ {
+ File file = new File(TARGET_PDF_DIR,
"PDFBOX-5250-pattern-reduced3.pdf");
+ try (PDDocument doc = Loader.loadPDF(file))
+ {
+ PDFRenderer renderer = new PDFRenderer(doc);
+ BufferedImage renderedImage = renderer.renderImageWithDPI(0, 100);
+ // a pixel within the shading-pattern-filled text; before the fix,
the mesh shading
+ // was shifted out of view here, leaving this pixel blank white
instead of the
+ // gradient's red-ish color. Checking red without also ruling out
green isn't enough
+ // because white also has a maxed-out red channel.
+ int rgb = renderedImage.getRGB(190, 331);
+ int red = (rgb >> 16) & 0xFF;
+ int green = (rgb >> 8) & 0xFF;
+ Assertions.assertTrue(red > 150 && green < 150,
+ "expected a red-ish gradient pixel but was: " +
Integer.toHexString(rgb));
+ }
+ }
+
+ /**
* PDFBOX-5876: rendering a page containing a very large JPEG 2000 (JPX)
image at reduced
* scale must not decode the image at full resolution first just to read
its width, height
* and color space. Before the fix, {@code PDImageXObject.initJPXValues()}
did exactly that,
