blob: b3a7ad34e3b6d49f651b05463a01bce62a8c045f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPDFStream_DEFINED
#define SkPDFStream_DEFINED
#include "SkPDFTypes.h"
#include "SkRefCnt.h"
#include "SkStream.h"
#include "SkTemplates.h"
class SkPDFCatalog;
/** \class SkPDFStream
A stream object in a PDF. Note, all streams must be indirect objects (via
SkObjRef).
*/
class SkPDFStream : public SkPDFDict {
public:
/** Create a PDF stream. A Length entry is automatically added to the
* stream dictionary. The stream may be retained (stream->ref() may be
* called) so its contents must not be changed after calling this.
* @param data The data part of the stream.
*/
explicit SkPDFStream(SkData* data);
/** Deprecated constructor. */
explicit SkPDFStream(SkStream* stream);
/** Create a PDF stream with the same content and dictionary entries
* as the passed one.
*/
explicit SkPDFStream(const SkPDFStream& pdfStream);
virtual ~SkPDFStream();
// The SkPDFObject interface.
virtual void emitObject(SkWStream* stream, SkPDFCatalog* catalog,
bool indirect);
virtual size_t getOutputSize(SkPDFCatalog* catalog, bool indirect);
protected:
/* Create a PDF stream with no data. The setData method must be called to
* set the data.
*/
SkPDFStream();
void setData(SkStream* stream);
private:
enum State {
kUnused_State, //!< The stream hasn't been requested yet.
kNoCompression_State, //!< The stream's been requested in an
// uncompressed form.
kCompressed_State, //!< The stream's already been compressed.
};
// Indicates what form (or if) the stream has been requested.
State fState;
// TODO(vandebo): Use SkData (after removing deprecated constructor).
SkRefPtr<SkStream> fData;
SkRefPtr<SkPDFStream> fSubstitute;
typedef SkPDFDict INHERITED;
// Populate the stream dictionary. This method returns false if
// fSubstitute should be used.
bool populate(SkPDFCatalog* catalog);
};
#endif
|
