feat: add Java JRXML-to-PNG rendering pipeline with pixel-level SSIM comparison

- lib/java/: Java renderer (JrxmlRenderer) using JasperReports 6.21.0 - JrxmlDebug for diagnostics, JrxmlGen for format reference - download_jars.sh for one-time dependency setup - agent/nodes.py: _render_jrxml_to_png() and _compute_pixel_similarity() - Pixel comparison integrates into validate node (SSIM < 0.4 fails) - Pixel fidelity context injected into correct_jrxml for targeted fixes - tests/test_pixel_comparison.py: 15 unit tests (render, SSIM, integration) - .gitignore: exclude lib/java/*.jar, lib/java/*.class, tmp/ - CLAUDE.md: v11 changelog documenting the rendering pipeline - All non-LLM tests pass (97/97)
2026-05-23 15:09:55 +08:00
parent 9de75d2f25
commit bb6cc6e241
16 changed files with 837 additions and 8 deletions
@@ -0,0 +1,58 @@
+import net.sf.jasperreports.engine.*;
+import net.sf.jasperreports.engine.design.*;
+import net.sf.jasperreports.jackson.util.*;
+import java.io.*;
+
+/**
+ * Generate a minimal JasperDesign programmatically, then serialize it
+ * via JacksonUtil to show the correct 7.x XML format.
+ */
+public class JrxmlGen {
+    public static void main(String[] args) throws Exception {
+        JasperDesign design = new JasperDesign();
+        design.setName("TestReport");
+        design.setPageWidth(595);
+        design.setPageHeight(842);
+        design.setColumnWidth(555);
+        design.setLeftMargin(20);
+        design.setRightMargin(20);
+        design.setTopMargin(20);
+        design.setBottomMargin(20);
+        design.setWhenNoDataType(com.fasterxml.jackson.databind.node.TextNode.valueOf("AllSectionsNoDetail"));
+
+        design.setQuery("SELECT 1");
+
+        JRDesignBand titleBand = new JRDesignBand();
+        titleBand.setHeight(50);
+        JRDesignStaticText st = new JRDesignStaticText();
+        st.setX(0);
+        st.setY(0);
+        st.setWidth(555);
+        st.setHeight(30);
+        st.setText("HELLO WORLD");
+        titleBand.addElement(st);
+        design.setTitle(titleBand);
+
+        JRDesignBand detailBand = new JRDesignBand();
+        detailBand.setHeight(20);
+        JRDesignStaticText dt = new JRDesignStaticText();
+        dt.setX(0);
+        dt.setY(0);
+        dt.setWidth(555);
+        dt.setHeight(20);
+        dt.setText("test row");
+        detailBand.addElement(dt);
+        design.setDetail(detailBand);
+
+        JacksonUtil util = JacksonUtil.getInstance(DefaultJasperReportsContext.getInstance());
+        String xml = util.saveXml(design);
+        System.out.println("=== Serialized 7.x JRXML ===");
+        System.out.println(xml);
+
+        String outPath = "D:/Idea Project/jaspersoft/tmp/test_reference.jrxml";
+        try (FileWriter fw = new FileWriter(outPath)) {
+            fw.write(xml);
+        }
+        System.out.println("\nSaved to: " + outPath);
+    }
+}