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 scoped_ptr<PrintingContext> PrintingContext::Create(Delegate* delegate) {
  19   return make_scoped_ptr<PrintingContext>(
  20       new PrintingContextNoSystemDialog(delegate));
  21 }
  22
  23 PrintingContextNoSystemDialog::PrintingContextNoSystemDialog(Delegate* delegate)
  24     : PrintingContext(delegate) {
  25 }
  26
  27 PrintingContextNoSystemDialog::~PrintingContextNoSystemDialog() {
  28   ReleaseContext();
  29 }
  30
  31 void PrintingContextNoSystemDialog::AskUserForSettings(
  32     int max_pages,
  33     bool has_selection,
  34     bool is_scripted,
  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(
  58       delegate_->GetAppLocale().c_str(), &height, &width, &error);
  59   if (error > U_ZERO_ERROR) {
  60     // If the call failed, assume a paper size of 8.5 x 11 inches.
  61     LOG(WARNING) << "ulocdata_getPaperSize failed, using 8.5 x 11, error: "
  62                  << error;
  63     width = static_cast<int>(
  64         kLetterWidthInch * settings_.device_units_per_inch());
  65     height = static_cast<int>(
  66         kLetterHeightInch  * settings_.device_units_per_inch());
  67   } else {
  68     // ulocdata_getPaperSize returns the width and height in mm.
  69     // Convert this to pixels based on the dpi.
  70     float multiplier = 100 * settings_.device_units_per_inch();
  71     multiplier /= kHundrethsMMPerInch;
  72     width *= multiplier;
  73     height *= multiplier;
  74   }
  75   return gfx::Size(width, height);
  76 }
  77
  78 PrintingContext::Result PrintingContextNoSystemDialog::UpdatePrinterSettings(
  79     bool external_preview,
  80     bool show_system_dialog) {
  81   DCHECK(!show_system_dialog);
  82
  83   if (settings_.dpi() == 0)
  84     UseDefaultSettings();
  85
  86   return OK;
  87 }
  88
  89 PrintingContext::Result PrintingContextNoSystemDialog::InitWithSettings(
  90     const PrintSettings& settings) {
  91   DCHECK(!in_print_job_);
  92
  93   settings_ = settings;
  94
  95   return OK;
  96 }
  97
  98 PrintingContext::Result PrintingContextNoSystemDialog::NewDocument(
  99     const base::string16& document_name) {
 100   DCHECK(!in_print_job_);
 101   in_print_job_ = true;
 102
 103   return OK;
 104 }
 105
 106 PrintingContext::Result PrintingContextNoSystemDialog::NewPage() {
 107   if (abort_printing_)
 108     return CANCEL;
 109   DCHECK(in_print_job_);
 110
 111   // Intentional No-op.
 112
 113   return OK;
 114 }
 115
 116 PrintingContext::Result PrintingContextNoSystemDialog::PageDone() {
 117   if (abort_printing_)
 118     return CANCEL;
 119   DCHECK(in_print_job_);
 120
 121   // Intentional No-op.
 122
 123   return OK;
 124 }
 125
 126 PrintingContext::Result PrintingContextNoSystemDialog::DocumentDone() {
 127   if (abort_printing_)
 128     return CANCEL;
 129   DCHECK(in_print_job_);
 130
 131   ResetSettings();
 132   return OK;
 133 }
 134
 135 void PrintingContextNoSystemDialog::Cancel() {
 136   abort_printing_ = true;
 137   in_print_job_ = false;
 138 }
 139
 140 void PrintingContextNoSystemDialog::ReleaseContext() {
 141   // Intentional No-op.
 142 }
 143
 144 gfx::NativeDrawingContext PrintingContextNoSystemDialog::context() const {
 145   // Intentional No-op.
 146   return NULL;
 147 }
 148
 149 }  // namespace printing
 150