Add Postscript Printing

chrome/utility/printing_handler.cc

 // Copyright 2014 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/utility/printing_handler.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/files/file_util.h"
@@ skipping 52 matching lines @@
 bool PrintingHandler::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PrintingHandler, message)
 #if defined(OS_WIN)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToMetafiles,
                         OnRenderPDFPagesToMetafile)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToMetafiles_GetPage,
                         OnRenderPDFPagesToMetafileGetPage)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToMetafiles_Stop,
                         OnRenderPDFPagesToMetafileStop)
+    IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToPostScript_Start,
+                        OnRenderPDFPagesToPostScriptStart)
+    IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToPostScript_GetPage,
+                        OnRenderPDFPagesToPostScriptGetPage)
+    IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToPostScript_Stop,
+                        OnRenderPDFPagesToPostScriptStop)
 #endif  // OS_WIN
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToPWGRaster,
                         OnRenderPDFPagesToPWGRaster)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_GetPrinterCapsAndDefaults,
                         OnGetPrinterCapsAndDefaults)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_GetPrinterSemanticCapsAndDefaults,
                         OnGetPrinterSemanticCapsAndDefaults)
 #endif  // ENABLE_PRINT_PREVIEW
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 #if defined(OS_WIN)
 void PrintingHandler::OnRenderPDFPagesToMetafile(
     IPC::PlatformFileForTransit pdf_transit,
     const PdfRenderSettings& settings) {
   pdf_rendering_settings_ = settings;
+  chrome_pdf::SetPDFPostscriptPrintingLevel(0);  // Not using postscript.
   chrome_pdf::SetPDFUseGDIPrinting(pdf_rendering_settings_.mode ==
                                    PdfRenderSettings::Mode::GDI_TEXT);
   base::File pdf_file = IPC::PlatformFileForTransitToFile(pdf_transit);
   int page_count = LoadPDF(std::move(pdf_file));
   Send(
       new ChromeUtilityHostMsg_RenderPDFPagesToMetafiles_PageCount(page_count));
 }
 
 void PrintingHandler::OnRenderPDFPagesToMetafileGetPage(
     int page_number,
     IPC::PlatformFileForTransit output_file) {
   base::File emf_file = IPC::PlatformFileForTransitToFile(output_file);
   float scale_factor = 1.0f;
   bool success =
       RenderPdfPageToMetafile(page_number, std::move(emf_file), &scale_factor);
   Send(new ChromeUtilityHostMsg_RenderPDFPagesToMetafiles_PageDone(
       success, scale_factor));
 }
 
 void PrintingHandler::OnRenderPDFPagesToMetafileStop() {
   ReleaseProcessIfNeeded();
 }
 
-#endif  // OS_WIN
+void PrintingHandler::OnRenderPDFPagesToPostScriptStart(
+    IPC::PlatformFileForTransit pdf_transit,
+    const PdfRenderSettings& settings) {
+  pdf_rendering_settings_ = settings;
+  if (pdf_rendering_settings_.mode ==
+      PdfRenderSettings::Mode::POSTSCRIPT_LEVEL2) {
+    chrome_pdf::SetPDFPostscriptPrintingLevel(2);
+  } else if (pdf_rendering_settings_.mode ==
+             PdfRenderSettings::Mode::POSTSCRIPT_LEVEL3) {
+    chrome_pdf::SetPDFPostscriptPrintingLevel(3);
+  }
+
+  base::File pdf_file = IPC::PlatformFileForTransitToFile(pdf_transit);
+  int page_count = LoadPDF(std::move(pdf_file));
+  Send(new ChromeUtilityHostMsg_RenderPDFPagesToPostScript_PageCount(
+      page_count));
+}
+
+void PrintingHandler::OnRenderPDFPagesToPostScriptGetPage(
+    int page_number,
+    IPC::PlatformFileForTransit output_file) {
+  base::File ps_file = IPC::PlatformFileForTransitToFile(output_file);
+  bool success = RenderPdfPageToPostScript(page_number, std::move(ps_file));
+  Send(new ChromeUtilityHostMsg_RenderPDFPagesToPostScript_PageDone(success));
+}
+
+void PrintingHandler::OnRenderPDFPagesToPostScriptStop() {
+  ReleaseProcessIfNeeded();
+}
+#endif  // defined(OS_WIN)
 
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 void PrintingHandler::OnRenderPDFPagesToPWGRaster(
     IPC::PlatformFileForTransit pdf_transit,
     const PdfRenderSettings& settings,
     const PwgRasterSettings& bitmap_settings,
     IPC::PlatformFileForTransit bitmap_transit) {
   base::File pdf = IPC::PlatformFileForTransitToFile(pdf_transit);
   base::File bitmap = IPC::PlatformFileForTransitToFile(bitmap_transit);
   if (RenderPDFPagesToPWGRaster(std::move(pdf), settings, bitmap_settings,
                                 std::move(bitmap))) {
     Send(new ChromeUtilityHostMsg_RenderPDFPagesToPWGRaster_Succeeded());
   } else {
     Send(new ChromeUtilityHostMsg_RenderPDFPagesToPWGRaster_Failed());
   }
   ReleaseProcessIfNeeded();
 }
-#endif  // ENABLE_PRINT_PREVIEW
+#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 #if defined(OS_WIN)
 int PrintingHandler::LoadPDF(base::File pdf_file) {
   int64_t length64 = pdf_file.GetLength();
   if (length64 <= 0 || length64 > std::numeric_limits<int>::max())
     return 0;
   int length = static_cast<int>(length64);
 
   pdf_data_.resize(length);
   if (length != pdf_file.Read(0, pdf_data_.data(), pdf_data_.size()))
@@ skipping 34 matching lines @@
           pdf_rendering_settings_.area.y(),
           pdf_rendering_settings_.area.width(),
           pdf_rendering_settings_.area.height(), true, false, true, true,
           pdf_rendering_settings_.autorotate)) {
     return false;
   }
   metafile.FinishPage();
   metafile.FinishDocument();
   return metafile.SaveTo(&output_file);
 }
+
+bool PrintingHandler::RenderPdfPageToPostScript(int page_number,
+                                                base::File output_file) {
+  Emf metafile;
+  metafile.Init();
+
+  // The underlying metafile is of type Emf and ignores the arguments passed
+  // to StartPage.
+  metafile.StartPage(gfx::Size(), gfx::Rect(), 1);
+  if (!chrome_pdf::RenderPDFPageToDC(
+          &pdf_data_.front(), pdf_data_.size(), page_number, metafile.context(),
+          pdf_rendering_settings_.dpi, pdf_rendering_settings_.area.x() -
+                                           pdf_rendering_settings_.offsets.x(),
+          pdf_rendering_settings_.area.y() -
+              pdf_rendering_settings_.offsets.y(),
+          pdf_rendering_settings_.area.width(),
+          pdf_rendering_settings_.area.height(), true, false, true, true,
+          pdf_rendering_settings_.autorotate)) {
+    return false;
+  }
+  metafile.FinishPage();
+  metafile.FinishDocument();
+  return metafile.SaveTo(&output_file);
+}
 #endif  // defined(OS_WIN)
 
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 bool PrintingHandler::RenderPDFPagesToPWGRaster(
     base::File pdf_file,
     const PdfRenderSettings& settings,
     const PwgRasterSettings& bitmap_settings,
     base::File bitmap_file) {
   base::File::Info info;
   if (!pdf_file.GetInfo(&info) || info.size <= 0 ||
@@ skipping 104 matching lines @@
   if (print_backend->GetPrinterSemanticCapsAndDefaults(printer_name,
                                                        &printer_info)) {
     Send(new ChromeUtilityHostMsg_GetPrinterSemanticCapsAndDefaults_Succeeded(
         printer_name, printer_info));
   } else {
     Send(new ChromeUtilityHostMsg_GetPrinterSemanticCapsAndDefaults_Failed(
         printer_name));
   }
   ReleaseProcessIfNeeded();
 }
-#endif  // ENABLE_PRINT_PREVIEW
+#endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 }  // namespace printing