move annotations to canvas virtual

tests/SerializationTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
+#include "SkAnnotationKeys.h"
 #include "Resources.h"
 #include "SkCanvas.h"
 #include "SkFixed.h"
 #include "SkFontDescriptor.h"
 #include "SkImage.h"
 #include "SkImageSource.h"
 #include "SkMallocPixelRef.h"
 #include "SkOSFile.h"
 #include "SkPictureRecorder.h"
 #include "SkTableColorFilter.h"
@@ skipping 521 matching lines @@
 
         // Deserialize picture
         SkValidatingReadBuffer reader(static_cast<void*>(data.get()), size);
         SkAutoTUnref<SkPicture> readPict(
             SkPicture::CreateFromBuffer(reader));
         REPORTER_ASSERT(reporter, readPict.get());
     }
 
     TestPictureTypefaceSerialization(reporter);
 }
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+#include "SkAnnotation.h"
+
+static SkPicture* copy_picture_via_serialization(SkPicture* src) {
+    SkDynamicMemoryWStream wstream;
+    src->serialize(&wstream);
+    SkAutoTDelete<SkStreamAsset> rstream(wstream.detachAsStream());
+    return SkPicture::CreateFromStream(rstream);
+}
+
+struct AnnotationRec {
+    const SkRect    fRect;
+    const char*     fKey;
+    SkData*         fValue;
+};
+
+class TestAnnotationCanvas : public SkCanvas {
+    skiatest::Reporter*     fReporter;
+    const AnnotationRec*    fRec;
+    int                     fCount;
+    int                     fCurrIndex;
+
+public:
+    TestAnnotationCanvas(skiatest::Reporter* reporter, const AnnotationRec rec[], int count)
+        : SkCanvas(100, 100)
+        , fReporter(reporter)
+        , fRec(rec)
+        , fCount(count)
+        , fCurrIndex(0)
+    {}
+
+    ~TestAnnotationCanvas() {
+        REPORTER_ASSERT(fReporter, fCount == fCurrIndex);
+    }
+
+protected:
+    void onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) {
+        REPORTER_ASSERT(fReporter, fCurrIndex < fCount);
+        REPORTER_ASSERT(fReporter, rect == fRec[fCurrIndex].fRect);
+        REPORTER_ASSERT(fReporter, !strcmp(key, fRec[fCurrIndex].fKey));
+        REPORTER_ASSERT(fReporter, value->equals(fRec[fCurrIndex].fValue));
+        fCurrIndex += 1;
+    }
+};
+
+/*
+ *  Test the 3 annotation types by recording them into a picture, serializing, and then playing
+ *  them back into another canvas.
+ */
+DEF_TEST(Annotations, reporter) {
+    SkPictureRecorder recorder;
+    SkCanvas* recordingCanvas = recorder.beginRecording(SkRect::MakeWH(100, 100));
+    
+    const char* str0 = "rect-with-url";
+    const SkRect r0 = SkRect::MakeWH(10, 10);
+    SkAutoTUnref<SkData> d0(SkData::NewWithCString(str0));
+    SkAnnotateRectWithURL(recordingCanvas, r0, d0);
+    
+    const char* str1 = "named-destination";
+    const SkRect r1 = SkRect::MakeXYWH(5, 5, 0, 0); // collapsed to a point
+    SkAutoTUnref<SkData> d1(SkData::NewWithCString(str1));
+    SkAnnotateNamedDestination(recordingCanvas, {r1.x(), r1.y()}, d1);
+    
+    const char* str2 = "link-to-destination";
+    const SkRect r2 = SkRect::MakeXYWH(20, 20, 5, 6);
+    SkAutoTUnref<SkData> d2(SkData::NewWithCString(str2));
+    SkAnnotateLinkToDestination(recordingCanvas, r2, d2);
+
+    const AnnotationRec recs[] = {
+        { r0, SkAnnotationKeys::URL_Key(),                  d0 },
+        { r1, SkAnnotationKeys::Define_Named_Dest_Key(),    d1 },
+        { r2, SkAnnotationKeys::Link_Named_Dest_Key(),      d2 },
+    };
+
+    SkAutoTUnref<SkPicture> pict0(recorder.endRecording());
+    SkAutoTUnref<SkPicture> pict1(copy_picture_via_serialization(pict0));
+
+    TestAnnotationCanvas canvas(reporter, recs, SK_ARRAY_COUNT(recs));
+    canvas.drawPicture(pict1);
+}
+