printing/printing_context.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.h"
   6
   7 #include "base/logging.h"
   8 #include "base/values.h"
   9 #include "printing/page_setup.h"
  10 #include "printing/page_size_margins.h"
  11 #include "printing/print_job_constants.h"
  12 #include "printing/print_settings_initializer.h"
  13 #include "printing/units.h"
  14
  15 namespace printing {
  16
  17 namespace {
  18 const float kCloudPrintMarginInch = 0.25;
  19 }
  20
  21 PrintingContext::PrintingContext(const std::string& app_locale)
  22     : dialog_box_dismissed_(false),
  23       in_print_job_(false),
  24       abort_printing_(false),
  25       app_locale_(app_locale) {
  26 }
  27
  28 PrintingContext::~PrintingContext() {
  29 }
  30
  31 void PrintingContext::set_margin_type(MarginType type) {
  32   DCHECK(type != CUSTOM_MARGINS);
  33   settings_.set_margin_type(type);
  34 }
  35
  36 void PrintingContext::ResetSettings() {
  37   ReleaseContext();
  38
  39   settings_.Clear();
  40
  41   in_print_job_ = false;
  42   dialog_box_dismissed_ = false;
  43   abort_printing_ = false;
  44 }
  45
  46 PrintingContext::Result PrintingContext::OnError() {
  47   ResetSettings();
  48   return abort_printing_ ? CANCEL : FAILED;
  49 }
  50
  51 PrintingContext::Result PrintingContext::UpdatePrintSettings(
  52     const base::DictionaryValue& job_settings,
  53     const PageRanges& ranges) {
  54   ResetSettings();
  55
  56   if (!PrintSettingsInitializer::InitSettings(job_settings, ranges,
  57                                               &settings_)) {
  58     NOTREACHED();
  59     return OnError();
  60   }
  61
  62   bool print_to_pdf = false;
  63   bool is_cloud_dialog = false;
  64   bool print_with_privet = false;
  65
  66   if (!job_settings.GetBoolean(kSettingPrintToPDF, &print_to_pdf) ||
  67       !job_settings.GetBoolean(kSettingCloudPrintDialog, &is_cloud_dialog) ||
  68       !job_settings.GetBoolean(kSettingPrintWithPrivet, &print_with_privet)) {
  69     NOTREACHED();
  70     return OnError();
  71   }
  72
  73   bool print_to_cloud = job_settings.HasKey(kSettingCloudPrintId);
  74   bool open_in_external_preview =
  75       job_settings.HasKey(kSettingOpenPDFInPreview);
  76
  77   if (!open_in_external_preview && (print_to_pdf || print_to_cloud ||
  78                                     is_cloud_dialog || print_with_privet)) {
  79     settings_.set_dpi(kDefaultPdfDpi);
  80     gfx::Size paper_size(GetPdfPaperSizeDeviceUnits());
  81     const base::DictionaryValue* media_size = NULL;
  82     if (job_settings.GetDictionary(kSettingMediaSize, &media_size)) {
  83       int width_microns = 0;
  84       int height_microns = 0;
  85       if (media_size->GetInteger(kSettingMediaSizeWidthMicrons,
  86                                  &width_microns) &&
  87           media_size->GetInteger(kSettingMediaSizeHeightMicrons,
  88                                  &height_microns)) {
  89         float deviceMicronsPerDeviceUnit =
  90             (kHundrethsMMPerInch * 10.0f) / settings_.device_units_per_inch();
  91         paper_size = gfx::Size(width_microns / deviceMicronsPerDeviceUnit,
  92                                height_microns / deviceMicronsPerDeviceUnit);
  93       }
  94     }
  95     gfx::Rect paper_rect(0, 0, paper_size.width(), paper_size.height());
  96     if (print_to_cloud || print_with_privet) {
  97       paper_rect.Inset(
  98           kCloudPrintMarginInch * settings_.device_units_per_inch(),
  99           kCloudPrintMarginInch * settings_.device_units_per_inch());
 100     }
 101     settings_.SetPrinterPrintableArea(paper_size, paper_rect, true);
 102     return OK;
 103   }
 104
 105   return UpdatePrinterSettings(open_in_external_preview);
 106 }
 107
 108 }  // namespace printing