printing/printing_context_no_system_dialog.cc

   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
  15 namespace printing {
  16
  17 // static
  18 PrintingContext* PrintingContext::Create(const std::string& app_locale) {
  19   return static_cast<PrintingContext*>(
  20       new PrintingContextNoSystemDialog(app_locale));
  21 }
  22
  23 PrintingContextNoSystemDialog::PrintingContextNoSystemDialog(
  24     const std::string& app_locale) : PrintingContext(app_locale) {
  25 }
  26
  27 PrintingContextNoSystemDialog::~PrintingContextNoSystemDialog() {
  28   ReleaseContext();
  29 }
  30
  31 void PrintingContextNoSystemDialog::AskUserForSettings(
  32     gfx::NativeView parent_view,
  33     int max_pages,
  34     bool has_selection,
  35     const PrintSettingsCallback& callback) {
  36   // We don't want to bring up a dialog here.  Ever.  Just signal the callback.
  37   callback.Run(OK);
  38 }
  39
  40 PrintingContext::Result PrintingContextNoSystemDialog::UseDefaultSettings() {
  41   DCHECK(!in_print_job_);
  42
  43   ResetSettings();
  44   settings_.set_dpi(kDefaultPdfDpi);
  45   gfx::Size physical_size = GetPdfPaperSizeDeviceUnits();
  46   // Assume full page is printable for now.
  47   gfx::Rect printable_area(0, 0, physical_size.width(), physical_size.height());
  48   DCHECK_EQ(settings_.device_units_per_inch(), kDefaultPdfDpi);
  49   settings_.SetPrinterPrintableArea(physical_size, printable_area, true);
  50   return OK;
  51 }
  52
  53 gfx::Size PrintingContextNoSystemDialog::GetPdfPaperSizeDeviceUnits() {
  54   int32_t width = 0;
  55   int32_t height = 0;
  56   UErrorCode error = U_ZERO_ERROR;
  57   ulocdata_getPaperSize(app_locale_.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
  77 PrintingContext::Result PrintingContextNoSystemDialog::UpdatePrinterSettings(
  78     bool external_preview) {
  79
  80   if (settings_.dpi() == 0)
  81     UseDefaultSettings();
  82
  83   return OK;
  84 }
  85
  86 PrintingContext::Result PrintingContextNoSystemDialog::InitWithSettings(
  87     const PrintSettings& settings) {
  88   DCHECK(!in_print_job_);
  89
  90   settings_ = settings;
  91
  92   return OK;
  93 }
  94
  95 PrintingContext::Result PrintingContextNoSystemDialog::NewDocument(
  96     const base::string16& document_name) {
  97   DCHECK(!in_print_job_);
  98   in_print_job_ = true;
  99
 100   return OK;
 101 }
 102
 103 PrintingContext::Result PrintingContextNoSystemDialog::NewPage() {
 104   if (abort_printing_)
 105     return CANCEL;
 106   DCHECK(in_print_job_);
 107
 108   // Intentional No-op.
 109
 110   return OK;
 111 }
 112
 113 PrintingContext::Result PrintingContextNoSystemDialog::PageDone() {
 114   if (abort_printing_)
 115     return CANCEL;
 116   DCHECK(in_print_job_);
 117
 118   // Intentional No-op.
 119
 120   return OK;
 121 }
 122
 123 PrintingContext::Result PrintingContextNoSystemDialog::DocumentDone() {
 124   if (abort_printing_)
 125     return CANCEL;
 126   DCHECK(in_print_job_);
 127
 128   ResetSettings();
 129   return OK;
 130 }
 131
 132 void PrintingContextNoSystemDialog::Cancel() {
 133   abort_printing_ = true;
 134   in_print_job_ = false;
 135 }
 136
 137 void PrintingContextNoSystemDialog::ReleaseContext() {
 138   // Intentional No-op.
 139 }
 140
 141 gfx::NativeDrawingContext PrintingContextNoSystemDialog::context() const {
 142   // Intentional No-op.
 143   return NULL;
 144 }
 145
 146 }  // namespace printing
 147