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
94
95
96
97
98
99
100
101
102
103
104
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/printing/renderer/print_web_view_helper.h"
#include <stddef.h>
#include "base/logging.h"
#include "build/build_config.h"
#include "components/printing/common/print_messages.h"
#include "printing/features/features.h"
#include "printing/metafile_skia_wrapper.h"
#if defined(OS_ANDROID)
#include "base/file_descriptor_posix.h"
#else
#include "base/process/process_handle.h"
#endif // defined(OS_ANDROID)
namespace {
#if defined(OS_ANDROID)
bool SaveToFD(const printing::Metafile& metafile,
const base::FileDescriptor& fd) {
DCHECK_GT(metafile.GetDataSize(), 0U);
if (fd.fd < 0) {
DLOG(ERROR) << "Invalid file descriptor!";
return false;
}
base::File file(fd.fd);
bool result = metafile.SaveTo(&file);
DLOG_IF(ERROR, !result) << "Failed to save file with fd " << fd.fd;
if (!fd.auto_close)
file.TakePlatformFile();
return result;
}
#endif // defined(OS_ANDROID)
} // namespace
namespace printing {
#if BUILDFLAG(ENABLE_BASIC_PRINTING)
bool PrintWebViewHelper::PrintPagesNative(blink::WebLocalFrame* frame,
int page_count) {
PdfMetafileSkia metafile(PDF_SKIA_DOCUMENT_TYPE);
CHECK(metafile.Init());
const PrintMsg_PrintPages_Params& params = *print_pages_params_;
std::vector<int> printed_pages = GetPrintedPages(params, page_count);
if (printed_pages.empty())
return false;
for (int page_number : printed_pages) {
PrintPageInternal(params.params, page_number, frame, &metafile, nullptr,
nullptr, nullptr);
}
// blink::printEnd() for PDF should be called before metafile is closed.
FinishFramePrinting();
metafile.FinishDocument();
#if defined(OS_ANDROID)
int sequence_number = -1;
base::FileDescriptor fd;
// Ask the browser to open a file for us.
Send(new PrintHostMsg_AllocateTempFileForPrinting(routing_id(),
&fd,
&sequence_number));
if (!SaveToFD(metafile, fd))
return false;
// Tell the browser we've finished writing the file.
Send(new PrintHostMsg_TempFileForPrintingWritten(routing_id(),
sequence_number));
return true;
#else
PrintHostMsg_DidPrintPage_Params printed_page_params;
if (!CopyMetafileDataToSharedMem(
metafile, &printed_page_params.metafile_data_handle)) {
return false;
}
printed_page_params.data_size = metafile.GetDataSize();
printed_page_params.document_cookie = params.params.document_cookie;
for (size_t i = 0; i < printed_pages.size(); ++i) {
printed_page_params.page_number = printed_pages[i];
Send(new PrintHostMsg_DidPrintPage(routing_id(), printed_page_params));
// Send the rest of the pages with an invalid metafile handle.
printed_page_params.metafile_data_handle.fd = -1;
}
return true;
#endif // defined(OS_ANDROID)
}
#endif // BUILDFLAG(ENABLE_BASIC_PRINTING)
} // namespace printing
|
