#396 Profiling performance case for border radius being very slow. [c…

…i skip]
danfickle · Oct 20, 2019 · 8ef7783 · 8ef7783
1 parent c8a3010
commit 8ef7783
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Showing 2 changed files with 26 additions and 3 deletions.
diff --git a/...ltopdf-examples/src/main/java/com/openhtmltopdf/performance/PerformanceCaseGenerator.java b/...ltopdf-examples/src/main/java/com/openhtmltopdf/performance/PerformanceCaseGenerator.java
@@ -32,5 +32,25 @@ public static String tableRows(int howMany) {
                         .mapToObj(i -> tr)
                         .collect(Collectors.joining("\n", hdr, ftr));
     }
+
+    /**
+     * Performace case for:
+     *   Issue 396 - CSS border-radius makes pdf rendering very slow.
+     * Caused by Area constructor being very slow (according to VisualVM). 
+     *
+     */
+    public static String borderRadius(int howMany) {
+        final String hdr = "<html><head><style>div.avatar { margin-left: auto; margin-right: auto; height: 200px; width: 160px; " +
+                           "background-size: cover; background-position: center center; background-repeat: no-repeat; " +
+                           "border-radius: 4px;" + 
+                           "background-image: url(demos/images/flyingsaucer.png); }" +
+                           "</style></head><body>";
+        final String div = "<div class=\"avatar\"></div>";
+        final String ftr = "</body></html>";
+
+        return IntStream.range(0, howMany)
+                .mapToObj(i -> div)
+                .collect(Collectors.joining("\n", hdr, ftr));
+    }
 
 }
diff --git a/openhtmltopdf-examples/src/main/java/com/openhtmltopdf/performance/ProfilingCaseRunner.java b/openhtmltopdf-examples/src/main/java/com/openhtmltopdf/performance/ProfilingCaseRunner.java
@@ -14,16 +14,18 @@ private static void run(String name, String html) throws Exception {
 
         Thread.sleep(20_000);
 
+        System.out.println("Beginning actual case now...");
+
         long start = System.currentTimeMillis();
         ByteArrayOutputStream baos = new ByteArrayOutputStream(0xffff);
         PdfRendererBuilder builder = new PdfRendererBuilder();
-        builder.withHtmlContent(html, null);
+        builder.withHtmlContent(html, PerformanceCaseGenerator.class.getResource("/").toExternalForm());
         builder.toStream(baos);
         builder.useFastMode();
         builder.run();
         long end = System.currentTimeMillis();
 
-        System.out.println("Profiling case took " + (end - start) + "milliseconds.");
+        System.out.println("Profiling case took " + (end - start) + " milliseconds.");
 
         Files.createDirectories(Paths.get("target/test/profiling/"));
         Files.write(Paths.get("target/test/profiling/" + name + ".pdf"), baos.toByteArray());
@@ -33,7 +35,8 @@ public static void main(String... args) throws Exception {
         // Just uncomment the one you want to profile...
 
         //run("paragraphs", PerformanceCaseGenerator.paragraphs(80_000));
-        run("table-rows", PerformanceCaseGenerator.tableRows(50_000));
+        //run("table-rows", PerformanceCaseGenerator.tableRows(50_000));
+        run("border-radius", PerformanceCaseGenerator.borderRadius(30_000));
     }
 
 }