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     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
  39 PrintingContext::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
  52 gfx::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
  77 PrintingContext::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
  88 PrintingContext::Result PrintingContextNoSystemDialog::InitWithSettings(
  89     const PrintSettings& settings) {
  90   DCHECK(!in_print_job_);
  91
  92   settings_ = settings;
  93
  94   return OK;
  95 }
  96
  97 PrintingContext::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
 105 PrintingContext::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
 115 PrintingContext::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
 125 PrintingContext::Result PrintingContextNoSystemDialog::DocumentDone() {
 126   if (abort_printing_)
 127     return CANCEL;
 128   DCHECK(in_print_job_);
 129
 130   ResetSettings();
 131   return OK;
 132 }
 133
 134 void PrintingContextNoSystemDialog::Cancel() {
 135   abort_printing_ = true;
 136   in_print_job_ = false;
 137 }
 138
 139 void PrintingContextNoSystemDialog::ReleaseContext() {
 140   // Intentional No-op.
 141 }
 142
 143 gfx::NativeDrawingContext PrintingContextNoSystemDialog::context() const {
 144   // Intentional No-op.
 145   return NULL;
 146 }
 147
 148 }  // namespace printing
 149