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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/browser/printing/pdf_to_emf_converter.h" | 5 #include "chrome/browser/printing/pdf_to_emf_converter.h" |
6 | 6 |
7 #include <queue> | 7 #include <queue> |
8 | 8 |
9 #include "base/files/file.h" | 9 #include "base/files/file.h" |
10 #include "base/files/file_util.h" | 10 #include "base/files/file_util.h" |
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54 ScopedTempFile; | 54 ScopedTempFile; |
55 | 55 |
56 // Wrapper for Emf to keep only file handle in memory, and load actual data only | 56 // Wrapper for Emf to keep only file handle in memory, and load actual data only |
57 // on playback. Emf::InitFromFile() can play metafile directly from disk, but it | 57 // on playback. Emf::InitFromFile() can play metafile directly from disk, but it |
58 // can't open file handles. We need file handles to reliably delete temporary | 58 // can't open file handles. We need file handles to reliably delete temporary |
59 // files, and to efficiently interact with utility process. | 59 // files, and to efficiently interact with utility process. |
60 class LazyEmf : public MetafilePlayer { | 60 class LazyEmf : public MetafilePlayer { |
61 public: | 61 public: |
62 LazyEmf(const scoped_refptr<RefCountedTempDir>& temp_dir, ScopedTempFile file) | 62 LazyEmf(const scoped_refptr<RefCountedTempDir>& temp_dir, ScopedTempFile file) |
63 : temp_dir_(temp_dir), file_(file.Pass()) {} | 63 : temp_dir_(temp_dir), file_(file.Pass()) {} |
64 virtual ~LazyEmf() { Close(); } | 64 ~LazyEmf() override { Close(); } |
65 | 65 |
66 bool SafePlayback(HDC hdc) const override; | 66 bool SafePlayback(HDC hdc) const override; |
67 bool SaveTo(base::File* file) const override; | 67 bool SaveTo(base::File* file) const override; |
68 | 68 |
69 private: | 69 private: |
70 void Close() const; | 70 void Close() const; |
71 bool LoadEmf(Emf* emf) const; | 71 bool LoadEmf(Emf* emf) const; |
72 | 72 |
73 mutable scoped_refptr<RefCountedTempDir> temp_dir_; | 73 mutable scoped_refptr<RefCountedTempDir> temp_dir_; |
74 mutable ScopedTempFile file_; // Mutable because of consts in base class. | 74 mutable ScopedTempFile file_; // Mutable because of consts in base class. |
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135 } | 135 } |
136 ScopedTempFile emf() { return emf_.Pass(); } | 136 ScopedTempFile emf() { return emf_.Pass(); } |
137 void set_emf(ScopedTempFile emf) { emf_ = emf.Pass(); } | 137 void set_emf(ScopedTempFile emf) { emf_ = emf.Pass(); } |
138 | 138 |
139 private: | 139 private: |
140 int page_number_; | 140 int page_number_; |
141 PdfToEmfConverter::GetPageCallback callback_; | 141 PdfToEmfConverter::GetPageCallback callback_; |
142 ScopedTempFile emf_; | 142 ScopedTempFile emf_; |
143 }; | 143 }; |
144 | 144 |
145 virtual ~PdfToEmfUtilityProcessHostClient(); | 145 ~PdfToEmfUtilityProcessHostClient() override; |
146 | 146 |
147 bool Send(IPC::Message* msg); | 147 bool Send(IPC::Message* msg); |
148 | 148 |
149 // Message handlers. | 149 // Message handlers. |
150 void OnProcessStarted(); | 150 void OnProcessStarted(); |
151 void OnPageCount(int page_count); | 151 void OnPageCount(int page_count); |
152 void OnPageDone(bool success, float scale_factor); | 152 void OnPageDone(bool success, float scale_factor); |
153 | 153 |
154 void OnFailed(); | 154 void OnFailed(); |
155 void OnTempPdfReady(ScopedTempFile pdf); | 155 void OnTempPdfReady(ScopedTempFile pdf); |
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174 typedef std::queue<GetPageCallbackData> GetPageCallbacks; | 174 typedef std::queue<GetPageCallbackData> GetPageCallbacks; |
175 GetPageCallbacks get_page_callbacks_; | 175 GetPageCallbacks get_page_callbacks_; |
176 | 176 |
177 DISALLOW_COPY_AND_ASSIGN(PdfToEmfUtilityProcessHostClient); | 177 DISALLOW_COPY_AND_ASSIGN(PdfToEmfUtilityProcessHostClient); |
178 }; | 178 }; |
179 | 179 |
180 class PdfToEmfConverterImpl : public PdfToEmfConverter { | 180 class PdfToEmfConverterImpl : public PdfToEmfConverter { |
181 public: | 181 public: |
182 PdfToEmfConverterImpl(); | 182 PdfToEmfConverterImpl(); |
183 | 183 |
184 virtual ~PdfToEmfConverterImpl(); | 184 ~PdfToEmfConverterImpl() override; |
185 | 185 |
186 void Start(const scoped_refptr<base::RefCountedMemory>& data, | 186 void Start(const scoped_refptr<base::RefCountedMemory>& data, |
187 const PdfRenderSettings& conversion_settings, | 187 const PdfRenderSettings& conversion_settings, |
188 const StartCallback& start_callback) override; | 188 const StartCallback& start_callback) override; |
189 | 189 |
190 void GetPage(int page_number, | 190 void GetPage(int page_number, |
191 const GetPageCallback& get_page_callback) override; | 191 const GetPageCallback& get_page_callback) override; |
192 | 192 |
193 // Helps to cancel callbacks if this object is destroyed. | 193 // Helps to cancel callbacks if this object is destroyed. |
194 void RunCallback(const base::Closure& callback); | 194 void RunCallback(const base::Closure& callback); |
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488 | 488 |
489 PdfToEmfConverter::~PdfToEmfConverter() { | 489 PdfToEmfConverter::~PdfToEmfConverter() { |
490 } | 490 } |
491 | 491 |
492 // static | 492 // static |
493 scoped_ptr<PdfToEmfConverter> PdfToEmfConverter::CreateDefault() { | 493 scoped_ptr<PdfToEmfConverter> PdfToEmfConverter::CreateDefault() { |
494 return scoped_ptr<PdfToEmfConverter>(new PdfToEmfConverterImpl()); | 494 return scoped_ptr<PdfToEmfConverter>(new PdfToEmfConverterImpl()); |
495 } | 495 } |
496 | 496 |
497 } // namespace printing | 497 } // namespace printing |
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