printing_context_no_system_dialog.cc revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
1// Copyright (c) 2011 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/printing_context_no_system_dialog.h"
6
7#include <unicode/ulocdata.h>
8
9#include "base/logging.h"
10#include "base/values.h"
11#include "printing/metafile.h"
12#include "printing/print_job_constants.h"
13#include "printing/units.h"
14
15namespace printing {
16
17// static
18scoped_ptr<PrintingContext> PrintingContext::Create(Delegate* delegate) {
19  return make_scoped_ptr<PrintingContext>(
20      new PrintingContextNoSystemDialog(delegate));
21}
22
23PrintingContextNoSystemDialog::PrintingContextNoSystemDialog(Delegate* delegate)
24    : PrintingContext(delegate) {
25}
26
27PrintingContextNoSystemDialog::~PrintingContextNoSystemDialog() {
28  ReleaseContext();
29}
30
31void PrintingContextNoSystemDialog::AskUserForSettings(
32    int max_pages,
33    bool has_selection,
34    const PrintSettingsCallback& callback) {
35  // We don't want to bring up a dialog here.  Ever.  Just signal the callback.
36  callback.Run(OK);
37}
38
39PrintingContext::Result PrintingContextNoSystemDialog::UseDefaultSettings() {
40  DCHECK(!in_print_job_);
41
42  ResetSettings();
43  settings_.set_dpi(kDefaultPdfDpi);
44  gfx::Size physical_size = GetPdfPaperSizeDeviceUnits();
45  // Assume full page is printable for now.
46  gfx::Rect printable_area(0, 0, physical_size.width(), physical_size.height());
47  DCHECK_EQ(settings_.device_units_per_inch(), kDefaultPdfDpi);
48  settings_.SetPrinterPrintableArea(physical_size, printable_area, true);
49  return OK;
50}
51
52gfx::Size PrintingContextNoSystemDialog::GetPdfPaperSizeDeviceUnits() {
53  int32_t width = 0;
54  int32_t height = 0;
55  UErrorCode error = U_ZERO_ERROR;
56  ulocdata_getPaperSize(
57      delegate_->GetAppLocale().c_str(), &height, &width, &error);
58  if (error > U_ZERO_ERROR) {
59    // If the call failed, assume a paper size of 8.5 x 11 inches.
60    LOG(WARNING) << "ulocdata_getPaperSize failed, using 8.5 x 11, error: "
61                 << error;
62    width = static_cast<int>(
63        kLetterWidthInch * settings_.device_units_per_inch());
64    height = static_cast<int>(
65        kLetterHeightInch  * settings_.device_units_per_inch());
66  } else {
67    // ulocdata_getPaperSize returns the width and height in mm.
68    // Convert this to pixels based on the dpi.
69    float multiplier = 100 * settings_.device_units_per_inch();
70    multiplier /= kHundrethsMMPerInch;
71    width *= multiplier;
72    height *= multiplier;
73  }
74  return gfx::Size(width, height);
75}
76
77PrintingContext::Result PrintingContextNoSystemDialog::UpdatePrinterSettings(
78    bool external_preview,
79    bool show_system_dialog) {
80  DCHECK(!show_system_dialog);
81
82  if (settings_.dpi() == 0)
83    UseDefaultSettings();
84
85  return OK;
86}
87
88PrintingContext::Result PrintingContextNoSystemDialog::InitWithSettings(
89    const PrintSettings& settings) {
90  DCHECK(!in_print_job_);
91
92  settings_ = settings;
93
94  return OK;
95}
96
97PrintingContext::Result PrintingContextNoSystemDialog::NewDocument(
98    const base::string16& document_name) {
99  DCHECK(!in_print_job_);
100  in_print_job_ = true;
101
102  return OK;
103}
104
105PrintingContext::Result PrintingContextNoSystemDialog::NewPage() {
106  if (abort_printing_)
107    return CANCEL;
108  DCHECK(in_print_job_);
109
110  // Intentional No-op.
111
112  return OK;
113}
114
115PrintingContext::Result PrintingContextNoSystemDialog::PageDone() {
116  if (abort_printing_)
117    return CANCEL;
118  DCHECK(in_print_job_);
119
120  // Intentional No-op.
121
122  return OK;
123}
124
125PrintingContext::Result PrintingContextNoSystemDialog::DocumentDone() {
126  if (abort_printing_)
127    return CANCEL;
128  DCHECK(in_print_job_);
129
130  ResetSettings();
131  return OK;
132}
133
134void PrintingContextNoSystemDialog::Cancel() {
135  abort_printing_ = true;
136  in_print_job_ = false;
137}
138
139void PrintingContextNoSystemDialog::ReleaseContext() {
140  // Intentional No-op.
141}
142
143gfx::NativeDrawingContext PrintingContextNoSystemDialog::context() const {
144  // Intentional No-op.
145  return NULL;
146}
147
148}  // namespace printing
149
150