1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "printing/metafile_skia_wrapper.h"
6 #include "skia/ext/platform_device.h"
7 #include "skia/ext/refptr.h"
8 #include "third_party/skia/include/core/SkCanvas.h"
9 #include "third_party/skia/include/core/SkDevice.h"
10 #include "third_party/skia/include/core/SkMetaData.h"
11
12 namespace printing {
13
14 namespace {
15
16 const char* kMetafileKey = "CrMetafile";
17 const char* kCustomScaleKey = "CrCustomScale";
18
19 } // namespace
20
21 // static
SetMetafileOnCanvas(const SkCanvas & canvas,Metafile * metafile)22 void MetafileSkiaWrapper::SetMetafileOnCanvas(const SkCanvas& canvas,
23 Metafile* metafile) {
24 skia::RefPtr<MetafileSkiaWrapper> wrapper;
25 if (metafile)
26 wrapper = skia::AdoptRef(new MetafileSkiaWrapper(metafile));
27
28 SkMetaData& meta = skia::getMetaData(canvas);
29 meta.setRefCnt(kMetafileKey, wrapper.get());
30 }
31
32 // static
GetMetafileFromCanvas(const SkCanvas & canvas)33 Metafile* MetafileSkiaWrapper::GetMetafileFromCanvas(const SkCanvas& canvas) {
34 SkMetaData& meta = skia::getMetaData(canvas);
35 SkRefCnt* value;
36 if (!meta.findRefCnt(kMetafileKey, &value) || !value)
37 return NULL;
38
39 return static_cast<MetafileSkiaWrapper*>(value)->metafile_;
40 }
41
42 // static
SetCustomScaleOnCanvas(const SkCanvas & canvas,double scale)43 void MetafileSkiaWrapper::SetCustomScaleOnCanvas(const SkCanvas& canvas,
44 double scale) {
45 SkMetaData& meta = skia::getMetaData(canvas);
46 meta.setScalar(kCustomScaleKey, SkFloatToScalar(scale));
47 }
48
49 // static
GetCustomScaleOnCanvas(const SkCanvas & canvas,double * scale)50 bool MetafileSkiaWrapper::GetCustomScaleOnCanvas(const SkCanvas& canvas,
51 double* scale) {
52 SkMetaData& meta = skia::getMetaData(canvas);
53 SkScalar value;
54 if (!meta.findScalar(kCustomScaleKey, &value))
55 return false;
56
57 *scale = SkScalarToFloat(value);
58 return true;
59 }
60
MetafileSkiaWrapper(Metafile * metafile)61 MetafileSkiaWrapper::MetafileSkiaWrapper(Metafile* metafile)
62 : metafile_(metafile) {
63 }
64
65 } // namespace printing
66