Implement limited paged media support for mac.

BUG=47277
TEST=none

Review URL: http://codereview.chromium.org/2876020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@51347 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 13 insertions, 3 deletions

diff --git a/printing/printed_document_mac.cc b/printing/printed_document_mac.cc
index a3ea8c4..3f5d75d 100644
--- a/printing/printed_document_mac.cc
+++ b/printing/printed_document_mac.cc
@@ -26,13 +26,23 @@ void PrintedDocument::RenderPrintedPage(
 
   const printing::PageSetup& page_setup(
       immutable_.settings_.page_setup_device_units());
-  CGRect target_rect = page_setup.content_area().ToCGRect();
+  gfx::Rect target_rect = page.page_content_rect();
+  const gfx::Rect& physical_size = page_setup.physical_size();
+  // http://dev.w3.org/csswg/css3-page/#positioning-page-box
+  if (physical_size.width() > page.page_size().width()) {
+    int diff = physical_size.width() - page.page_size().width();
+    target_rect.set_x(target_rect.x() + diff / 2);
+  }
+  if (physical_size.height() > page.page_size().height()) {
+    int diff = physical_size.height() - page.page_size().height();
+    target_rect.set_y(target_rect.y() + diff / 2);
+  }
 
   const printing::NativeMetafile* metafile = page.native_metafile();
   // Each NativeMetafile is a one-page PDF, and pages use 1-based indexing.
   const int page_number = 1;
-  metafile->RenderPage(page_number, context, target_rect, true, false, false,
-                       false);
+  metafile->RenderPage(page_number, context, target_rect.ToCGRect(),
+                       true, false, false, false);
 
   // TODO(stuartmorgan): Print the header and footer.
 }