1 /*
2  * Copyright 2012 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #include "SkAnnotation.h"
9 #include "SkData.h"
10 #include "SkPaint.h"
11 #include "SkPoint.h"
12 #include "SkReadBuffer.h"
13 #include "SkWriteBuffer.h"
14 
SkAnnotation(const char key[],SkData * value)15 SkAnnotation::SkAnnotation(const char key[], SkData* value) : fKey(key) {
16     if (nullptr == value) {
17         value = SkData::NewEmpty();
18     } else {
19         value->ref();
20     }
21     fData = value;
22 }
23 
~SkAnnotation()24 SkAnnotation::~SkAnnotation() {
25     fData->unref();
26 }
27 
find(const char key[]) const28 SkData* SkAnnotation::find(const char key[]) const {
29     return fKey.equals(key) ? fData : nullptr;
30 }
31 
SkAnnotation(SkReadBuffer & buffer)32 SkAnnotation::SkAnnotation(SkReadBuffer& buffer) {
33     buffer.readString(&fKey);
34     fData = buffer.readByteArrayAsData();
35 }
36 
writeToBuffer(SkWriteBuffer & buffer) const37 void SkAnnotation::writeToBuffer(SkWriteBuffer& buffer) const {
38     buffer.writeString(fKey.c_str());
39     buffer.writeDataAsByteArray(fData);
40 }
41 
URL_Key()42 const char* SkAnnotationKeys::URL_Key() {
43     return "SkAnnotationKey_URL";
44 };
45 
Define_Named_Dest_Key()46 const char* SkAnnotationKeys::Define_Named_Dest_Key() {
47     return "SkAnnotationKey_Define_Named_Dest";
48 };
49 
Link_Named_Dest_Key()50 const char* SkAnnotationKeys::Link_Named_Dest_Key() {
51     return "SkAnnotationKey_Link_Named_Dest";
52 };
53 
54 ///////////////////////////////////////////////////////////////////////////////
55 
56 #include "SkCanvas.h"
57 
annotate_paint(SkPaint & paint,const char * key,SkData * value)58 static void annotate_paint(SkPaint& paint, const char* key, SkData* value) {
59     paint.setAnnotation(SkAnnotation::Create(key, value))->unref();
60 }
61 
SkAnnotateRectWithURL(SkCanvas * canvas,const SkRect & rect,SkData * value)62 void SkAnnotateRectWithURL(SkCanvas* canvas, const SkRect& rect, SkData* value) {
63     if (nullptr == value) {
64         return;
65     }
66     SkPaint paint;
67     annotate_paint(paint, SkAnnotationKeys::URL_Key(), value);
68     canvas->drawRect(rect, paint);
69 }
70 
SkAnnotateNamedDestination(SkCanvas * canvas,const SkPoint & point,SkData * name)71 void SkAnnotateNamedDestination(SkCanvas* canvas, const SkPoint& point, SkData* name) {
72     if (nullptr == name) {
73         return;
74     }
75     SkPaint paint;
76     annotate_paint(paint, SkAnnotationKeys::Define_Named_Dest_Key(), name);
77     canvas->drawPoint(point.x(), point.y(), paint);
78 }
79 
SkAnnotateLinkToDestination(SkCanvas * canvas,const SkRect & rect,SkData * name)80 void SkAnnotateLinkToDestination(SkCanvas* canvas, const SkRect& rect, SkData* name) {
81     if (nullptr == name) {
82         return;
83     }
84     SkPaint paint;
85     annotate_paint(paint, SkAnnotationKeys::Link_Named_Dest_Key(), name);
86     canvas->drawRect(rect, paint);
87 }
88