Add Postscript Printing

components/printing/renderer/print_web_view_helper.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 "components/printing/renderer/print_web_view_helper.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1081 matching lines @@
   // Print page onto entire page not just printable area. Preview PDF already
   // has content in correct position taking into account page size and printable
   // area.
   // TODO(vitalybuka) : Make this consistent on all platform. This change
   // affects Windows only. On Linux and OSX RenderPagesForPrint does not use
   // printable_area. Also we can't change printable_area deeper inside
   // RenderPagesForPrint for Windows, because it's used also by native
   // printing and it expects real printable_area value.
   // See http://crbug.com/123408
   PrintMsg_Print_Params& print_params = print_pages_params_->params;
+  printer_printable_area_ = print_params.printable_area;
   print_params.printable_area = gfx::Rect(print_params.page_size);
 
   // Render Pages for printing.
   if (!RenderPagesForPrint(plugin_frame, plugin_element)) {
     LOG(ERROR) << "RenderPagesForPrint failed";
     DidFinishPrinting(FAIL_PRINT);
   }
 }
 #endif  // BUILDFLAG(ENABLE_BASIC_PRINTING) && BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
@@ skipping 214 matching lines @@
   page_params.page_number = page_number;
   std::unique_ptr<PdfMetafileSkia> draft_metafile;
   PdfMetafileSkia* initial_render_metafile = print_preview_context_.metafile();
   if (print_preview_context_.IsModifiable() && is_print_ready_metafile_sent_) {
     draft_metafile.reset(new PdfMetafileSkia(PDF_SKIA_DOCUMENT_TYPE));
     initial_render_metafile = draft_metafile.get();
   }
 
   base::TimeTicks begin_time = base::TimeTicks::Now();
   PrintPageInternal(page_params, print_preview_context_.prepared_frame(),
-                    initial_render_metafile, nullptr, nullptr);
+                    initial_render_metafile, nullptr, nullptr, nullptr);
   print_preview_context_.RenderedPreviewPage(
       base::TimeTicks::Now() - begin_time);
   if (draft_metafile.get()) {
     draft_metafile->FinishDocument();
   } else if (print_preview_context_.IsModifiable() &&
              print_preview_context_.generate_draft_pages()) {
     DCHECK(!draft_metafile.get());
     draft_metafile =
         print_preview_context_.metafile()->GetMetafileForCurrentPage(
             PDF_SKIA_DOCUMENT_TYPE);
@@ skipping 480 matching lines @@
   return true;
 }
 #endif  // BUILDFLAG(ENABLE_BASIC_PRINTING)
 
 #if !defined(OS_MACOSX)
 void PrintWebViewHelper::PrintPageInternal(
     const PrintMsg_PrintPage_Params& params,
     blink::WebLocalFrame* frame,
     PdfMetafileSkia* metafile,
     gfx::Size* page_size_in_dpi,
-    gfx::Rect* content_area_in_dpi) {
+    gfx::Rect* content_area_in_dpi,
+    gfx::Rect* printable_area_in_dpi) {
   PageSizeMargins page_layout_in_points;
 
   double css_scale_factor = 1.0f;
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
     if (params.params.scale_factor >= kEpsilon)
       css_scale_factor = params.params.scale_factor;
 #endif
   ComputePageLayoutInPointsForCss(frame, params.page_number, params.params,
                                   ignore_css_margins_, &css_scale_factor,
                                   &page_layout_in_points);
   gfx::Size page_size;
   gfx::Rect content_area;
   GetPageSizeAndContentAreaFromPageLayout(page_layout_in_points, &page_size,
                                           &content_area);
   int dpi = static_cast<int>(params.params.dpi);
   // Calculate the actual page size and content area in dpi.
   if (page_size_in_dpi) {
     *page_size_in_dpi =
         gfx::Size(static_cast<int>(ConvertUnitDouble(page_size.width(),
                                                      kPointsPerInch, dpi)),
                   static_cast<int>(ConvertUnitDouble(page_size.height(),
                                                      kPointsPerInch, dpi)));
   }
 
   if (content_area_in_dpi) {
     // Output PDF matches paper size and should be printer edge to edge.
     *content_area_in_dpi =
         gfx::Rect(0, 0, page_size_in_dpi->width(), page_size_in_dpi->height());
   }
+  if (printable_area_in_dpi) {
+    *printable_area_in_dpi = printer_printable_area_;
+  }
 
   gfx::Rect canvas_area =
       params.params.display_header_footer ? gfx::Rect(page_size) : content_area;
 
   // TODO(thestig): Figure out why Linux is different.
 #if defined(OS_WIN)
   float webkit_page_shrink_factor =
       frame->getPrintPageShrink(params.page_number);
   float scale_factor = css_scale_factor * webkit_page_shrink_factor;
 #else
@@ skipping 471 matching lines @@
       blink::WebConsoleMessage::LevelWarning, message));
   return false;
 }
 
 void PrintWebViewHelper::ScriptingThrottler::Reset() {
   // Reset counter on successful print.
   count_ = 0;
 }
 
 }  // namespace printing