PrintPreview: Hide/Show the header footer option based on print frame margins.

chrome/browser/printing/print_preview_message_handler.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/printing/print_preview_message_handler.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/shared_memory.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/printing/print_job_manager.h"
 #include "chrome/browser/printing/print_preview_tab_controller.h"
 #include "chrome/browser/printing/print_view_manager.h"
 #include "chrome/browser/printing/printer_query.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/webui/print_preview/print_preview_ui.h"
 #include "chrome/common/print_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 #include "printing/page_size_margins.h"
 #include "printing/print_job_constants.h"
 

[vandebo (ex-Chrome), 2012/03/19 17:11:30]

#include "ui/gfx/rect.h"

[kmadhusu, 2012/03/19 18:45:31]

(repeating our conversation) Header file inclusion is not required here since we
are just passing the reference around.

 using content::BrowserThread;
 using content::NavigationController;
 using content::WebContents;
 
 namespace {
 
 void StopWorker(int document_cookie) {
   if (document_cookie <= 0)
     return;
 
@@ skipping 146 matching lines @@
   StopWorker(document_cookie);
 
   PrintPreviewUI* print_preview_ui = GetPrintPreviewUI();
   if (!print_preview_ui)
     return;
   print_preview_ui->OnPrintPreviewFailed();
 }
 
 void PrintPreviewMessageHandler::OnDidGetDefaultPageLayout(
     const PageSizeMargins& page_layout_in_points,
+    const gfx::Rect& printable_area_in_points,
     bool has_custom_page_size_style) {
   PrintPreviewUI* print_preview_ui = GetPrintPreviewUI();
   if (!print_preview_ui)
     return;
   print_preview_ui->OnDidGetDefaultPageLayout(page_layout_in_points,
+                                              printable_area_in_points,
                                               has_custom_page_size_style);
 }
 
 void PrintPreviewMessageHandler::OnPrintPreviewCancelled(int document_cookie) {
   // Always need to stop the worker.
   StopWorker(document_cookie);
 }
 
 void PrintPreviewMessageHandler::OnInvalidPrinterSettings(int document_cookie) {
   StopWorker(document_cookie);
@@ skipping 40 matching lines @@
     return;
   }
   // If |tab| is navigating and it has a print preview tab, notify |tab| to
   // consider print preview done so it unfreezes the renderer in the case of
   // window.print().
   if (preview_tab)
     tab->print_view_manager()->PrintPreviewDone();
 }
 
 }  // namespace printing