PDF: add support for named destinations

src/core/SkAnnotation.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkAnnotation.h"
 #include "SkDataSet.h"
 #include "SkFlattenableBuffers.h"
+#include "SkPoint.h"
 #include "SkStream.h"
 
 SkAnnotation::SkAnnotation(SkDataSet* data, uint32_t flags) {
     if (NULL == data) {
         data = SkDataSet::NewEmpty();
     } else {
         data->ref();
     }
     fDataSet = data;
     fFlags = flags;
@@ skipping 14 matching lines @@
 
 void SkAnnotation::flatten(SkFlattenableWriteBuffer& buffer) const {
     buffer.writeUInt(fFlags);
     buffer.writeFlattenable(fDataSet);
 }
 
 const char* SkAnnotationKeys::URL_Key() {
     return "SkAnnotationKey_URL";
 };
 
+const char* SkAnnotationKeys::Define_Named_Dest_Key() {
+    return "SkAnnotationKey_Define_Named_Dest";
+};
+
+const char* SkAnnotationKeys::Link_Named_Dest_Key() {
+    return "SkAnnotationKey_Link_Named_Dest";
+};
+
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "SkCanvas.h"
 
+static void annotate_paint(SkPaint& paint, const char* key, SkData* value) {
+    SkAutoTUnref<SkDataSet> dataset(SkNEW_ARGS(SkDataSet, (key, value)));
+    SkAnnotation* ann = SkNEW_ARGS(SkAnnotation, (dataset,
+                                                  SkAnnotation::kNoDraw_Flag));
+
+    paint.setAnnotation(ann)->unref();
+    SkASSERT(paint.isNoDrawAnnotation());
+}
+
 void SkAnnotateRectWithURL(SkCanvas* canvas, const SkRect& rect, SkData* value) {
     if (NULL == value) {
         return;
     }
-
-    const char* key = SkAnnotationKeys::URL_Key();
-    SkAutoTUnref<SkDataSet> dataset(SkNEW_ARGS(SkDataSet, (key, value)));
-    SkAnnotation* ann = SkNEW_ARGS(SkAnnotation, (dataset,
-                                                  SkAnnotation::kNoDraw_Flag));
-
     SkPaint paint;
-    paint.setAnnotation(ann)->unref();
-    SkASSERT(paint.isNoDrawAnnotation());
-
+    annotate_paint(paint, SkAnnotationKeys::URL_Key(), value);
     canvas->drawRect(rect, paint);
 }
+
+void SkAnnotateNamedDestination(SkCanvas* canvas, const SkPoint& point, SkData* name) {
+    if (NULL == name) {
+        return;
+    }
+    SkPaint paint;
+    annotate_paint(paint, SkAnnotationKeys::Define_Named_Dest_Key(), name);
+    canvas->drawPoint(point.x(), point.y(), paint);
+}
+
+void SkAnnotateLinkToDestination(SkCanvas* canvas, const SkRect& rect, SkData* name) {
+    if (NULL == name) {
+        return;
+    }
+    SkPaint paint;
+    annotate_paint(paint, SkAnnotationKeys::Link_Named_Dest_Key(), name);
+    canvas->drawRect(rect, paint);
+}