printing/print_settings_initializer.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/print_settings_initializer.h"
   6
   7 #include <algorithm>
   8 #include <cmath>
   9 #include <string>
  10
  11 #include "base/i18n/time_formatting.h"
  12 #include "base/string_number_conversions.h"
  13 #include "base/time.h"
  14 #include "base/utf_string_conversions.h"
  15 #include "base/values.h"
  16 #include "googleurl/src/gurl.h"
  17 #include "printing/print_job_constants.h"
  18 #include "printing/print_settings.h"
  19 #include "printing/units.h"
  20 #include "ui/base/text/text_elider.h"
  21
  22 using base::DictionaryValue;
  23
  24 namespace printing {
  25
  26 void PrintSettingsInitializer::InitHeaderFooterStrings(
  27       const DictionaryValue& job_settings,
  28       PrintSettings* print_settings) {
  29   if (!job_settings.GetBoolean(kSettingHeaderFooterEnabled,
  30                                &print_settings->display_header_footer)) {
  31     NOTREACHED();
  32   }
  33   if (!print_settings->display_header_footer)
  34     return;
  35
  36   string16 date = base::TimeFormatShortDateNumeric(base::Time::Now());
  37   string16 title;
  38   std::string url;
  39   if (!job_settings.GetString(kSettingHeaderFooterTitle, &title) ||
  40       !job_settings.GetString(kSettingHeaderFooterURL, &url)) {
  41     NOTREACHED();
  42   }
  43
  44   gfx::Font font(
  45       kSettingHeaderFooterFontName,
  46       ceil(ConvertPointsToPixelDouble(kSettingHeaderFooterFontSize)));
  47   double segment_width = GetHeaderFooterSegmentWidth(ConvertUnitDouble(
  48       print_settings->page_setup_device_units().physical_size().width(),
  49       print_settings->device_units_per_inch(), kPixelsPerInch));
  50   date = ui::ElideText(date, font, segment_width, ui::ELIDE_AT_END);
  51   print_settings->date = date;
  52
  53   // Calculate the available title width. If the date string is not long
  54   // enough, increase the available space for the title.
  55   // Assumes there is no header text to RIGHT of title.
  56   double date_width = font.GetStringWidth(date);
  57   double max_title_width = std::min(2 * segment_width,
  58                                     2 * (segment_width - date_width) +
  59                                         segment_width);
  60   print_settings->title =
  61       ui::ElideText(title, font, max_title_width, ui::ELIDE_AT_END);
  62
  63   double max_url_width = 2 * segment_width;
  64   GURL gurl(url);
  65   print_settings->url = ui::ElideUrl(gurl, font, max_url_width, std::string());
  66 }
  67
  68 }  // namespace printing