PDF: add support for named destinations

tests/AnnotationTest.cpp

Index: tests/AnnotationTest.cpp
===================================================================
--- tests/AnnotationTest.cpp	(revision 7989)
+++ tests/AnnotationTest.cpp	(working copy)
@@ -12,6 +12,18 @@
 #include "SkPDFDevice.h"
 #include "SkPDFDocument.h"
 
+/** Returns true if data (may contain null characters) contains needle (null
+ *  terminated). */
+static bool ContainsString(const char* data, size_t dataSize, const char* needle) {
+    size_t nSize = strlen(needle);
+    for (size_t i = 0; i < dataSize - nSize; i++) {
+        if (strncmp(&data[i], needle, nSize) == 0) {
+            return true;
+        }
+    }
+    return false;
+}
+
 static void test_nodraw(skiatest::Reporter* reporter) {
     SkBitmap bm;
     bm.setConfig(SkBitmap::kARGB_8888_Config, 10, 10);
@@ -55,27 +67,38 @@
         SkAutoDataUnref out(outStream.copyToData());
         const char* rawOutput = (const char*)out->data();
 
-        bool found = false;
-        for (size_t i = 0; i < out->size() - 8; i++) {
-            if (rawOutput[i + 0] == '/' &&
-                rawOutput[i + 1] == 'A' &&
-                rawOutput[i + 2] == 'n' &&
-                rawOutput[i + 3] == 'n' &&
-                rawOutput[i + 4] == 'o' &&
-                rawOutput[i + 5] == 't' &&
-                rawOutput[i + 6] == 's' &&
-                rawOutput[i + 7] == ' ') {
-                found = true;
-                break;
-            }
-        }
-        REPORTER_ASSERT(reporter, found == tests[testNum].expectAnnotations);
+        REPORTER_ASSERT(reporter,
+            ContainsString(rawOutput, out->size(), "/Annots ")
+            == tests[testNum].expectAnnotations);
     }
 }
 
+static void test_named_destination_annotations(skiatest::Reporter* reporter) {
+    SkISize size = SkISize::Make(612, 792);
+    SkMatrix initialTransform;
+    initialTransform.reset();
+    SkPDFDevice device(size, size, initialTransform);
+    SkCanvas canvas(&device);
+
+    SkPoint p = SkPoint::Make(SkIntToScalar(72), SkIntToScalar(72));
+    SkAutoDataUnref data(SkData::NewWithCString("example"));
+    SkAnnotateNamedDestination(&canvas, p, data.get());
+
+    SkPDFDocument doc;
+    doc.appendPage(&device);
+    SkDynamicMemoryWStream outStream;
+    doc.emitPDF(&outStream);
+    SkAutoDataUnref out(outStream.copyToData());
+    const char* rawOutput = (const char*)out->data();
+
+    REPORTER_ASSERT(reporter,
+        ContainsString(rawOutput, out->size(), "/example "));
+}
+
 static void TestAnnotation(skiatest::Reporter* reporter) {
     test_nodraw(reporter);
     test_pdf_link_annotations(reporter);
+    test_named_destination_annotations(reporter);
 }
 
 #include "TestClassDef.h"