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 (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "SkFlate.h"
#include "SkPDFCatalog.h"
#include "SkPDFStream.h"
#include "SkStream.h"
SkPDFStream::SkPDFStream(SkStream* stream) {
if (SkFlate::HaveFlate())
SkAssertResult(SkFlate::Deflate(stream, &fCompressedData));
if (SkFlate::HaveFlate() &&
fCompressedData.getOffset() < stream->getLength()) {
fLength = fCompressedData.getOffset();
SkRefPtr<SkPDFName> flateFilter = new SkPDFName("FlateDecode");
flateFilter->unref(); // SkRefPtr and new both took a reference.
fDict.insert("Filter", flateFilter.get());
} else {
fCompressedData.reset();
fPlainData = stream;
fLength = fPlainData->getLength();
}
SkRefPtr<SkPDFInt> lenValue = new SkPDFInt(fLength);
lenValue->unref(); // SkRefPtr and new both took a reference.
fDict.insert("Length", lenValue.get());
}
SkPDFStream::~SkPDFStream() {
}
void SkPDFStream::emitObject(SkWStream* stream, SkPDFCatalog* catalog,
bool indirect) {
if (indirect)
return emitIndirectObject(stream, catalog);
fDict.emitObject(stream, catalog, false);
stream->writeText(" stream\n");
if (fPlainData.get())
stream->write(fPlainData->getMemoryBase(), fLength);
else
stream->write(fCompressedData.getStream(), fLength);
stream->writeText("\nendstream");
}
size_t SkPDFStream::getOutputSize(SkPDFCatalog* catalog, bool indirect) {
if (indirect)
return getIndirectOutputSize(catalog);
return fDict.getOutputSize(catalog, false) +
strlen(" stream\n\nendstream") + fLength;
}
void SkPDFStream::insert(SkPDFName* key, SkPDFObject* value) {
fDict.insert(key, value);
}
void SkPDFStream::insert(const char key[], SkPDFObject* value) {
fDict.insert(key, value);
}
|
