Printing: Implement PrintingContext::UseDefaultSettings for Linux/Cairo.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/3389005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@60087 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 40 insertions, 1 deletions

diff --git a/printing/print_settings.cc b/printing/print_settings.cc
index bfc7868..98a9ebf 100644
--- a/printing/print_settings.cc
+++ b/printing/print_settings.cc
@@ -4,9 +4,16 @@
 
 #include "printing/print_settings.h"
 
+// TODO(jhawkins): Move platform-specific implementations to their own files.
+#if defined(USE_X11)
+#include <gtk/gtk.h>
+#endif  // defined(USE_X11)
+
 #include "base/atomic_sequence_num.h"
 #include "base/logging.h"
+#include "base/string_piece.h"
 #include "base/sys_string_conversions.h"
+#include "base/utf_string_conversions.h"
 #include "printing/units.h"
 
 namespace printing {
@@ -37,7 +44,7 @@ void PrintSettings::Clear() {
   landscape_ = false;
 }
 
-#ifdef WIN32
+#if defined(OS_WIN)
 void PrintSettings::Init(HDC hdc,
                          const DEVMODE& dev_mode,
                          const PageRanges& new_ranges,
@@ -119,6 +126,38 @@ void PrintSettings::Init(PMPrinter printer, PMPageFormat page_format,
                           printable_area_device_units,
                           72);
 }
+#elif defined(OS_LINUX)
+void PrintSettings::Init(GtkPrintSettings* settings,
+                         GtkPageSetup* page_setup,
+                         const PageRanges& new_ranges,
+                         bool print_selection_only) {
+  // TODO(jhawkins): |printer_name_| and |device_name_| should be string16.
+  base::StringPiece name(
+      reinterpret_cast<const char*>(gtk_print_settings_get_printer(settings)));
+  printer_name_ = UTF8ToWide(name);
+  device_name_ = printer_name_;
+  ranges = new_ranges;
+
+  GtkPageOrientation orientation = gtk_print_settings_get_orientation(settings);
+  landscape_ = orientation == GTK_PAGE_ORIENTATION_LANDSCAPE;
+  selection_only = print_selection_only;
+
+  dpi_ = gtk_print_settings_get_resolution(settings);
+
+  // Initialize page_setup_device_units_.
+  gfx::Size physical_size_device_units(
+      gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH) * dpi_,
+      gtk_page_setup_get_paper_height(page_setup, GTK_UNIT_INCH) * dpi_);
+  gfx::Rect printable_area_device_units(
+      gtk_page_setup_get_left_margin(page_setup, GTK_UNIT_INCH) * dpi_,
+      gtk_page_setup_get_top_margin(page_setup, GTK_UNIT_INCH) * dpi_,
+      gtk_page_setup_get_page_width(page_setup, GTK_UNIT_INCH) * dpi_,
+      gtk_page_setup_get_page_height(page_setup, GTK_UNIT_INCH) * dpi_);
+
+  SetPrinterPrintableArea(physical_size_device_units,
+                          printable_area_device_units,
+                          dpi_);
+}
 #endif
 
 void PrintSettings::SetPrinterPrintableArea(