printing/print_settings_initializer_mac.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_mac.h"
   6
   7 #include "base/strings/sys_string_conversions.h"
   8 #include "printing/print_settings.h"
   9 #include "printing/units.h"
  10
  11 namespace printing {
  12
  13 // static
  14 void PrintSettingsInitializerMac::InitPrintSettings(
  15     PMPrinter printer,
  16     PMPageFormat page_format,
  17     PrintSettings* print_settings) {
  18   print_settings->set_device_name(
  19       base::SysCFStringRefToUTF16(PMPrinterGetID(printer)));
  20
  21   PMOrientation orientation = kPMPortrait;
  22   PMGetOrientation(page_format, &orientation);
  23   print_settings->SetOrientation(orientation == kPMLandscape);
  24
  25   UInt32 resolution_count = 0;
  26   PMResolution best_resolution = { 72.0, 72.0 };
  27   OSStatus status = PMPrinterGetPrinterResolutionCount(printer,
  28                                                        &resolution_count);
  29   if (status == noErr) {
  30     // Resolution indexes are 1-based.
  31     for (uint32 i = 1; i <= resolution_count; ++i) {
  32       PMResolution resolution;
  33       PMPrinterGetIndexedPrinterResolution(printer, i, &resolution);
  34       if (resolution.hRes > best_resolution.hRes)
  35         best_resolution = resolution;
  36     }
  37   }
  38   int dpi = best_resolution.hRes;
  39   print_settings->set_dpi(dpi);
  40
  41   DCHECK_EQ(dpi, best_resolution.vRes);
  42
  43   // Get printable area and paper rects (in points)
  44   PMRect page_rect, paper_rect;
  45   PMGetAdjustedPageRect(page_format, &page_rect);
  46   PMGetAdjustedPaperRect(page_format, &paper_rect);
  47
  48   // Device units are in points. Units per inch is 72.
  49   gfx::Size physical_size_device_units(
  50       (paper_rect.right - paper_rect.left),
  51       (paper_rect.bottom - paper_rect.top));
  52   gfx::Rect printable_area_device_units(
  53       (page_rect.left - paper_rect.left),
  54       (page_rect.top - paper_rect.top),
  55       (page_rect.right - page_rect.left),
  56       (page_rect.bottom - page_rect.top));
  57
  58   DCHECK_EQ(print_settings->device_units_per_inch(), kPointsPerInch);
  59   print_settings->SetPrinterPrintableArea(physical_size_device_units,
  60                                           printable_area_device_units,
  61                                           false);
  62 }
  63
  64 }  // namespace printing