1 // Copyright 2014 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 "chrome/browser/ui/libgtk2ui/printing_gtk2_util.h" 6 7 #include <gtk/gtk.h> 8 #include <gtk/gtkunixprint.h> 9 10 #include "base/strings/string16.h" 11 #include "base/strings/utf_string_conversions.h" 12 #include "printing/print_settings.h" 13 #include "printing/printing_context_linux.h" 14 #include "printing/units.h" 15 16 namespace { 17 18 const double kTopMarginInInch = 0.25; 19 const double kBottomMarginInInch = 0.56; 20 const double kLeftMarginInInch = 0.25; 21 const double kRightMarginInInch = 0.25; 22 23 } // namespace 24 25 gfx::Size GetPdfPaperSizeDeviceUnitsGtk( 26 printing::PrintingContextLinux* context) { 27 GtkPageSetup* page_setup = gtk_page_setup_new(); 28 29 gfx::SizeF paper_size( 30 gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH), 31 gtk_page_setup_get_paper_height(page_setup, GTK_UNIT_INCH)); 32 33 g_object_unref(page_setup); 34 35 const printing::PrintSettings& settings = context->settings(); 36 37 return gfx::Size( 38 paper_size.width() * settings.device_units_per_inch(), 39 paper_size.height() * settings.device_units_per_inch()); 40 } 41 42 void InitPrintSettingsGtk(GtkPrintSettings* settings, 43 GtkPageSetup* page_setup, 44 printing::PrintSettings* print_settings) { 45 DCHECK(settings); 46 DCHECK(page_setup); 47 DCHECK(print_settings); 48 49 base::string16 name(base::UTF8ToUTF16(static_cast<const char*>( 50 gtk_print_settings_get_printer(settings)))); 51 print_settings->set_device_name(name); 52 53 gfx::Size physical_size_device_units; 54 gfx::Rect printable_area_device_units; 55 int dpi = gtk_print_settings_get_resolution(settings); 56 if (dpi) { 57 // Initialize page_setup_device_units_. 58 physical_size_device_units.SetSize( 59 gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH) * dpi, 60 gtk_page_setup_get_paper_height(page_setup, GTK_UNIT_INCH) * dpi); 61 printable_area_device_units.SetRect( 62 gtk_page_setup_get_left_margin(page_setup, GTK_UNIT_INCH) * dpi, 63 gtk_page_setup_get_top_margin(page_setup, GTK_UNIT_INCH) * dpi, 64 gtk_page_setup_get_page_width(page_setup, GTK_UNIT_INCH) * dpi, 65 gtk_page_setup_get_page_height(page_setup, GTK_UNIT_INCH) * dpi); 66 } else { 67 // Use default values if we cannot get valid values from the print dialog. 68 dpi = printing::kPixelsPerInch; 69 double page_width_in_pixel = printing::kLetterWidthInch * dpi; 70 double page_height_in_pixel = printing::kLetterHeightInch * dpi; 71 physical_size_device_units.SetSize( 72 static_cast<int>(page_width_in_pixel), 73 static_cast<int>(page_height_in_pixel)); 74 printable_area_device_units.SetRect( 75 static_cast<int>(kLeftMarginInInch * dpi), 76 static_cast<int>(kTopMarginInInch * dpi), 77 page_width_in_pixel - (kLeftMarginInInch + kRightMarginInInch) * dpi, 78 page_height_in_pixel - (kTopMarginInInch + kBottomMarginInInch) * dpi); 79 } 80 81 print_settings->set_dpi(dpi); 82 83 // Note: With the normal GTK print dialog, when the user selects the landscape 84 // orientation, all that does is change the paper size. Which seems to be 85 // enough to render the right output and send it to the printer. 86 // The orientation value stays as portrait and does not actually affect 87 // printing. 88 // Thus this is only useful in print preview mode, where we manually set the 89 // orientation and change the paper size ourselves. 90 GtkPageOrientation orientation = gtk_print_settings_get_orientation(settings); 91 // Set before SetPrinterPrintableArea to make it flip area if necessary. 92 print_settings->SetOrientation(orientation == GTK_PAGE_ORIENTATION_LANDSCAPE); 93 DCHECK_EQ(print_settings->device_units_per_inch(), dpi); 94 print_settings->SetPrinterPrintableArea(physical_size_device_units, 95 printable_area_device_units, 96 true); 97 } 98
