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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkDocument.h"
#include "SkPDFCanon.h"
#include "SkPDFDocument.h"
#include "SkPDFDevice.h"
class SkDocument_PDF : public SkDocument {
public:
SkDocument_PDF(SkWStream* stream,
void (*doneProc)(SkWStream*, bool),
SkScalar rasterDpi)
: SkDocument(stream, doneProc)
, fDoc(SkNEW(SkPDFDocument))
, fRasterDpi(rasterDpi) {}
virtual ~SkDocument_PDF() {
// subclasses must call close() in their destructors
this->close();
}
protected:
virtual SkCanvas* onBeginPage(SkScalar width, SkScalar height,
const SkRect& trimBox) SK_OVERRIDE {
SkASSERT(!fCanvas.get());
SkASSERT(!fDevice.get());
SkISize pageSize = SkISize::Make(
SkScalarRoundToInt(width), SkScalarRoundToInt(height));
fDevice.reset(SkPDFDevice::Create(pageSize, fRasterDpi, &fCanon));
fCanvas.reset(SkNEW_ARGS(SkCanvas, (fDevice)));
fCanvas->clipRect(trimBox);
fCanvas->translate(trimBox.x(), trimBox.y());
return fCanvas.get();
}
void onEndPage() SK_OVERRIDE {
SkASSERT(fCanvas.get());
SkASSERT(fDevice.get());
fCanvas->flush();
fDoc->appendPage(fDevice.get());
fCanvas.reset(NULL);
fDevice.reset(NULL);
}
bool onClose(SkWStream* stream) SK_OVERRIDE {
SkASSERT(!fCanvas.get());
SkASSERT(!fDevice.get());
bool success = fDoc->emitPDF(stream);
fDoc.free();
SkDEBUGCODE(fCanon.assertEmpty());
return success;
}
void onAbort() SK_OVERRIDE {
fDoc.free();
SkDEBUGCODE(fCanon.assertEmpty());
}
private:
SkPDFCanon fCanon;
SkAutoTDelete<SkPDFDocument> fDoc;
SkAutoTUnref<SkPDFDevice> fDevice;
SkAutoTUnref<SkCanvas> fCanvas;
SkScalar fRasterDpi;
};
///////////////////////////////////////////////////////////////////////////////
SkDocument* SkDocument::CreatePDF(SkWStream* stream, SkScalar dpi) {
return stream ? SkNEW_ARGS(SkDocument_PDF, (stream, NULL, dpi)) : NULL;
}
static void delete_wstream(SkWStream* stream, bool aborted) {
SkDELETE(stream);
}
SkDocument* SkDocument::CreatePDF(const char path[], SkScalar dpi) {
SkFILEWStream* stream = SkNEW_ARGS(SkFILEWStream, (path));
if (!stream->isValid()) {
SkDELETE(stream);
return NULL;
}
return SkNEW_ARGS(SkDocument_PDF, (stream, delete_wstream, dpi));
}
|
