no_messages

chrome/browser/printing/pdf_to_emf_converter.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/browser/printing/pdf_to_emf_converter.h"
 
 #include <stdint.h>
 #include <windows.h>
 
 #include <memory>
@@ skipping 73 matching lines @@
  private:
   mutable scoped_refptr<RefCountedTempDir> temp_dir_;
   mutable ScopedTempFile file_;  // Mutable because of consts in base class.
 
   bool GetDataAsVector(std::vector<char>* buffer) const override;
   bool SaveTo(base::File* file) const override;
 
   DISALLOW_COPY_AND_ASSIGN(LazyEmf);
 };
 
+// Postscript metafile subclass to override SafePlayback.
+class PostScriptMetaFile : public LazyEmf {
+ public:
+  PostScriptMetaFile(const scoped_refptr<RefCountedTempDir>& temp_dir,
+                     ScopedTempFile file)
+      : LazyEmf(temp_dir, std::move(file)) {}
+
+ protected:
+  // MetafilePlayer:
+  bool SafePlayback(HDC hdc) const override;
+
+  DISALLOW_COPY_AND_ASSIGN(PostScriptMetaFile);
+};
+
 // Class for converting PDF to another format for printing (Emf, Postscript).
 // Class uses 3 threads: UI, IO and FILE.
 // Internal workflow is following:
 // 1. Create instance on the UI thread. (files_, settings_,)
 // 2. Create pdf file on the FILE thread.
 // 3. Start utility process and start conversion on the IO thread.
 // 4. Utility process returns page count.
 // 5. For each page:
 //   1. Clients requests page with file handle to a temp file.
 //   2. Utility converts the page, save it to the file and reply.
@@ skipping 47 matching lines @@
 
    private:
     int page_number_;
 
     PdfConverter::GetPageCallback callback_;
     ScopedTempFile file_;
 
     DISALLOW_COPY_AND_ASSIGN(GetPageCallbackData);
   };
 
-  ~PdfConverterUtilityProcessHostClient() override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
   // Helper functions: must be overridden by subclasses
   // Set the process name
-  virtual base::string16 GetName() const = 0;
+  base::string16 GetName() const;
   // Create a metafileplayer subclass file from a temporary file.
-  virtual std::unique_ptr<MetafilePlayer> GetFileFromTemp(
+  std::unique_ptr<MetafilePlayer> GetFileFromTemp(
       std::unique_ptr<base::File, content::BrowserThread::DeleteOnFileThread>
-          temp_file) = 0;
+          temp_file);
   // Send the messages to Start, GetPage, and Stop.
-  virtual void SendStartMessage(IPC::PlatformFileForTransit transit) = 0;
-  virtual void SendGetPageMessage(int page_number,
-                                  IPC::PlatformFileForTransit transit) = 0;
-  virtual void SendStopMessage() = 0;
+  void SendStartMessage(IPC::PlatformFileForTransit transit);
+  void SendGetPageMessage(int page_number, IPC::PlatformFileForTransit transit);
+  void SendStopMessage();
 
   // Message handlers:
   void OnPageCount(int page_count);
   void OnPageDone(bool success, float scale_factor);
 
   void OnFailed();
   void OnTempPdfReady(ScopedTempFile pdf);
   void OnTempFileReady(GetPageCallbackData* callback_data,
                        ScopedTempFile temp_file);
 
+  // Additional message handler needed for Pdf to Emf
+  void OnPreCacheFontCharacters(const LOGFONT& log_font,
+                                const base::string16& characters);
+
   scoped_refptr<RefCountedTempDir> temp_dir_;
 
   // Used to suppress callbacks after PdfConverter is deleted.
   base::WeakPtr<PdfConverterImpl> converter_;
   PdfRenderSettings settings_;
 
   // Document loaded callback.
   PdfConverter::StartCallback start_callback_;
 
   // Process host for IPC.
   base::WeakPtr<content::UtilityProcessHost> utility_process_host_;
 
   // Queue of callbacks for GetPage() requests. Utility process should reply
   // with PageDone in the same order as requests were received.
   // Use containers that keeps element pointers valid after push() and pop().
   using GetPageCallbacks = std::queue<GetPageCallbackData>;
   GetPageCallbacks get_page_callbacks_;
+
+  DISALLOW_COPY_AND_ASSIGN(PdfConverterUtilityProcessHostClient);
 };
 
-// Converts PDF into Emf.
-class PdfToEmfUtilityProcessHostClient
-    : public PdfConverterUtilityProcessHostClient {
- public:
-  PdfToEmfUtilityProcessHostClient(base::WeakPtr<PdfConverterImpl> converter,
-                                   const PdfRenderSettings& settings)
-      : PdfConverterUtilityProcessHostClient(converter, settings) {}
-
-  bool OnMessageReceived(const IPC::Message& message) override;
-
- private:
-  ~PdfToEmfUtilityProcessHostClient() override;
-  // Helpers to send messages and set process name
-  base::string16 GetName() const override;
-  std::unique_ptr<MetafilePlayer> GetFileFromTemp(
-      std::unique_ptr<base::File, content::BrowserThread::DeleteOnFileThread>
-          temp_file) override;
-  void SendStartMessage(IPC::PlatformFileForTransit transit) override;
-  void SendGetPageMessage(int page_number,
-                          IPC::PlatformFileForTransit transit) override;
-  void SendStopMessage() override;
-
-  // Additional message handler needed for Pdf to Emf
-  void OnPreCacheFontCharacters(const LOGFONT& log_font,
-                                const base::string16& characters);
-
-  DISALLOW_COPY_AND_ASSIGN(PdfToEmfUtilityProcessHostClient);
-};
-
-// Converts PDF into PostScript.
-class PdfToPostScriptUtilityProcessHostClient
-    : public PdfConverterUtilityProcessHostClient {
- public:
-  PdfToPostScriptUtilityProcessHostClient(
-      base::WeakPtr<PdfConverterImpl> converter,
-      const PdfRenderSettings& settings)
-      : PdfConverterUtilityProcessHostClient(converter, settings) {}
-
-  // UtilityProcessHostClient implementation.
-  bool OnMessageReceived(const IPC::Message& message) override;
-
- private:
-  // Helpers to send messages and set process name
-  base::string16 GetName() const override;
-  std::unique_ptr<MetafilePlayer> GetFileFromTemp(
-      std::unique_ptr<base::File, content::BrowserThread::DeleteOnFileThread>
-          temp_file) override;
-  void SendStartMessage(IPC::PlatformFileForTransit transit) override;
-  void SendGetPageMessage(int page_number,
-                          IPC::PlatformFileForTransit transit) override;
-  void SendStopMessage() override;
-
-  // Additional message handler needed for Pdf to PostScript
-  void OnPageDone(bool success);
-
-  DISALLOW_COPY_AND_ASSIGN(PdfToPostScriptUtilityProcessHostClient);
-};
+std::unique_ptr<MetafilePlayer>
+PdfConverterUtilityProcessHostClient::GetFileFromTemp(
+    std::unique_ptr<base::File, content::BrowserThread::DeleteOnFileThread>
+        temp_file) {
+  if (settings_.mode == PdfRenderSettings::Mode::POSTSCRIPT_LEVEL2 ||
+      settings_.mode == PdfRenderSettings::Mode::POSTSCRIPT_LEVEL3) {
+    return base::MakeUnique<PostScriptMetaFile>(temp_dir_,
+                                                std::move(temp_file));
+  }
+  return base::MakeUnique<LazyEmf>(temp_dir_, std::move(temp_file));
+}
 
 class PdfConverterImpl : public PdfConverter {
  public:
   PdfConverterImpl() : weak_ptr_factory_(this) {}
 
   base::WeakPtr<PdfConverterImpl> GetWeakPtr() {
     return weak_ptr_factory_.GetWeakPtr();
   }
 
   void GetPage(int page_number,
@@ skipping 90 matching lines @@
   file_->Seek(base::File::FROM_BEGIN, 0);
   int64_t size = file_->GetLength();
   if (size <= 0)
     return false;
   std::vector<char> data(size);
   if (file_->ReadAtCurrentPos(data.data(), data.size()) != size)
     return false;
   return emf->InitFromData(data.data(), data.size());
 }
 
-// Postscript metafile subclass to override SafePlayback.
-class PostScriptMetaFile : public LazyEmf {
- public:
-  PostScriptMetaFile(const scoped_refptr<RefCountedTempDir>& temp_dir,
-                     ScopedTempFile file)
-      : LazyEmf(temp_dir, std::move(file)) {}
-  ~PostScriptMetaFile() override;
-
- protected:
-  // MetafilePlayer:
-  bool SafePlayback(HDC hdc) const override;
-
-  DISALLOW_COPY_AND_ASSIGN(PostScriptMetaFile);
-};
-
-PostScriptMetaFile::~PostScriptMetaFile() {}
-
 bool PostScriptMetaFile::SafePlayback(HDC hdc) const {
   // TODO(thestig): Fix destruction of metafiles. For some reasons
   // instances of Emf are not deleted. https://crbug.com/260806
   // It's known that the Emf going to be played just once to a printer. So just
   // release |file_| before returning.
   Emf emf;
   if (!LoadEmf(&emf)) {
     Close();
     return false;
   }
@@ skipping 16 matching lines @@
   }
   Close();
   return true;
 }
 
 PdfConverterUtilityProcessHostClient::PdfConverterUtilityProcessHostClient(
     base::WeakPtr<PdfConverterImpl> converter,
     const PdfRenderSettings& settings)
     : converter_(converter), settings_(settings) {}
 
-PdfConverterUtilityProcessHostClient::~PdfConverterUtilityProcessHostClient() {}
-
 void PdfConverterUtilityProcessHostClient::Start(
     const scoped_refptr<base::RefCountedMemory>& data,
     const PdfConverter::StartCallback& start_callback) {
   if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&PdfConverterUtilityProcessHostClient::Start, this, data,
                    start_callback));
     return;
   }
@@ skipping 121 matching lines @@
 
 void PdfConverterUtilityProcessHostClient::OnFailed() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (!start_callback_.is_null())
     OnPageCount(0);
   while (!get_page_callbacks_.empty())
     OnPageDone(false, 0.0f);
   utility_process_host_.reset();
 }
 
-// PDF to Emf
-PdfToEmfUtilityProcessHostClient::~PdfToEmfUtilityProcessHostClient() {}
-
-void PdfToEmfUtilityProcessHostClient::OnPreCacheFontCharacters(
+void PdfConverterUtilityProcessHostClient::OnPreCacheFontCharacters(
     const LOGFONT& font,
     const base::string16& str) {
   // TODO(scottmg): pdf/ppapi still require the renderer to be able to precache
   // GDI fonts (http://crbug.com/383227), even when using DirectWrite.
   // Eventually this shouldn't be added and should be moved to
   // FontCacheDispatcher too. http://crbug.com/356346.
 
   // First, comments from FontCacheDispatcher::OnPreCacheFont do apply here too.
   // Except that for True Type fonts,
   // GetTextMetrics will not load the font in memory.
@@ skipping 11 matching lines @@
 
   SelectObject(hdc, old_font);
   DeleteObject(font_handle);
 
   HENHMETAFILE metafile = CloseEnhMetaFile(hdc);
 
   if (metafile)
     DeleteEnhMetaFile(metafile);
 }
 
-bool PdfToEmfUtilityProcessHostClient::OnMessageReceived(
+bool PdfConverterUtilityProcessHostClient::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(PdfToEmfUtilityProcessHostClient, message)
+  IPC_BEGIN_MESSAGE_MAP(PdfConverterUtilityProcessHostClient, message)
     IPC_MESSAGE_HANDLER(
         ChromeUtilityHostMsg_RenderPDFPagesToMetafiles_PageCount, OnPageCount)
     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_RenderPDFPagesToMetafiles_PageDone,
                         OnPageDone)
     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_PreCacheFontCharacters,
                         OnPreCacheFontCharacters)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
-base::string16 PdfToEmfUtilityProcessHostClient::GetName() const {
-  return l10n_util::GetStringUTF16(IDS_UTILITY_PROCESS_EMF_CONVERTOR_NAME);
+base::string16 PdfConverterUtilityProcessHostClient::GetName() const {
+  return l10n_util::GetStringUTF16(IDS_UTILITY_PROCESS_PDF_CONVERTOR_NAME);
 }
 
-std::unique_ptr<MetafilePlayer>
-PdfToEmfUtilityProcessHostClient::GetFileFromTemp(
-    std::unique_ptr<base::File, content::BrowserThread::DeleteOnFileThread>
-        temp_file) {
-  return base::MakeUnique<LazyEmf>(temp_dir_, std::move(temp_file));
-}
-
-void PdfToEmfUtilityProcessHostClient::SendGetPageMessage(
+void PdfConverterUtilityProcessHostClient::SendGetPageMessage(
     int page_number,
     IPC::PlatformFileForTransit transit) {
   Send(new ChromeUtilityMsg_RenderPDFPagesToMetafiles_GetPage(page_number,
                                                               transit));
 }
 
-void PdfToEmfUtilityProcessHostClient::SendStartMessage(
+void PdfConverterUtilityProcessHostClient::SendStartMessage(
     IPC::PlatformFileForTransit transit) {
   Send(new ChromeUtilityMsg_RenderPDFPagesToMetafiles(transit, settings_));
 }
 
-void PdfToEmfUtilityProcessHostClient::SendStopMessage() {
+void PdfConverterUtilityProcessHostClient::SendStopMessage() {
   Send(new ChromeUtilityMsg_RenderPDFPagesToMetafiles_Stop());
 }
 
-// Pdf to PostScript
-bool PdfToPostScriptUtilityProcessHostClient::OnMessageReceived(
-    const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(PdfToPostScriptUtilityProcessHostClient, message)
-    IPC_MESSAGE_HANDLER(
-        ChromeUtilityHostMsg_RenderPDFPagesToPostScript_PageCount, OnPageCount)
-    IPC_MESSAGE_HANDLER(
-        ChromeUtilityHostMsg_RenderPDFPagesToPostScript_PageDone, OnPageDone)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-base::string16 PdfToPostScriptUtilityProcessHostClient::GetName() const {
-  return l10n_util::GetStringUTF16(IDS_UTILITY_PROCESS_PS_CONVERTOR_NAME);
-}
-
-std::unique_ptr<MetafilePlayer>
-PdfToPostScriptUtilityProcessHostClient::GetFileFromTemp(
-    std::unique_ptr<base::File, content::BrowserThread::DeleteOnFileThread>
-        temp_file) {
-  return base::MakeUnique<PostScriptMetaFile>(temp_dir_, std::move(temp_file));
-}
-
-void PdfToPostScriptUtilityProcessHostClient::SendGetPageMessage(
-    int page_number,
-    IPC::PlatformFileForTransit transit) {
-  Send(new ChromeUtilityMsg_RenderPDFPagesToPostScript_GetPage(page_number,
-                                                               transit));
-}
-
-void PdfToPostScriptUtilityProcessHostClient::SendStartMessage(
-    IPC::PlatformFileForTransit transit) {
-  Send(new ChromeUtilityMsg_RenderPDFPagesToPostScript_Start(transit,
-                                                             settings_));
-}
-
-void PdfToPostScriptUtilityProcessHostClient::SendStopMessage() {
-  Send(new ChromeUtilityMsg_RenderPDFPagesToPostScript_Stop());
-}
-
-void PdfToPostScriptUtilityProcessHostClient::OnPageDone(bool success) {
-  PdfConverterUtilityProcessHostClient::OnPageDone(success, 0.0f);
-}
-
 void PdfConverterImpl::GetPage(int page_number,
                                const GetPageCallback& get_page_callback) {
   utility_client_->GetPage(page_number, get_page_callback);
 }
-
 void PdfConverterImpl::RunCallback(const base::Closure& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   callback.Run();
 }
 
 }  // namespace
 
 PdfConverter::~PdfConverter() {}
 
 // static
-std::unique_ptr<PdfConverter> PdfConverter::StartPdfToEmfConverter(
+std::unique_ptr<PdfConverter> PdfConverter::StartConverter(
     const scoped_refptr<base::RefCountedMemory>& data,
     const PdfRenderSettings& conversion_settings,
     const StartCallback& start_callback) {
   std::unique_ptr<PdfConverterImpl> converter =
       base::MakeUnique<PdfConverterImpl>();
-  converter->Start(new PdfToEmfUtilityProcessHostClient(converter->GetWeakPtr(),
-                                                        conversion_settings),
-                   data, start_callback);
-  return std::move(converter);
-}
-
-// static
-std::unique_ptr<PdfConverter> PdfConverter::StartPdfToPostScriptConverter(
-    const scoped_refptr<base::RefCountedMemory>& data,
-    const PdfRenderSettings& conversion_settings,
-    const StartCallback& start_callback) {
-  std::unique_ptr<PdfConverterImpl> converter =
-      base::MakeUnique<PdfConverterImpl>();
-  converter->Start(new PdfToPostScriptUtilityProcessHostClient(
+  converter->Start(new PdfConverterUtilityProcessHostClient(
                        converter->GetWeakPtr(), conversion_settings),
                    data, start_callback);
   return std::move(converter);
 }
 
 }  // namespace printing