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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 "ui/gfx/win/direct_write.h" | 5 #include "ui/gfx/win/direct_write.h" |
| 6 | 6 |
| 7 #include "base/command_line.h" | 7 #include "base/command_line.h" |
| 8 #include "base/metrics/field_trial.h" | 8 #include "base/metrics/field_trial.h" |
| 9 #include "base/win/registry.h" | 9 #include "base/win/registry.h" |
| 10 #include "base/win/scoped_comptr.h" | 10 #include "base/win/scoped_comptr.h" |
| (...skipping 26 matching lines...) Expand all Loading... |
| 37 if (os_version.build < 7600) | 37 if (os_version.build < 7600) |
| 38 return false; | 38 return false; |
| 39 } | 39 } |
| 40 // If forced off, don't use it. | 40 // If forced off, don't use it. |
| 41 const base::CommandLine& command_line = | 41 const base::CommandLine& command_line = |
| 42 *base::CommandLine::ForCurrentProcess(); | 42 *base::CommandLine::ForCurrentProcess(); |
| 43 return !command_line.HasSwitch(switches::kDisableDirectWrite); | 43 return !command_line.HasSwitch(switches::kDisableDirectWrite); |
| 44 } | 44 } |
| 45 | 45 |
| 46 void CreateDWriteFactory(IDWriteFactory** factory) { | 46 void CreateDWriteFactory(IDWriteFactory** factory) { |
| 47 if (!ShouldUseDirectWrite() || | 47 if (!ShouldUseDirectWrite()) |
| 48 base::CommandLine::ForCurrentProcess()->HasSwitch( | |
| 49 switches::kDisableDirectWriteForUI)) { | |
| 50 return; | 48 return; |
| 51 } | |
| 52 | 49 |
| 53 using DWriteCreateFactoryProc = decltype(DWriteCreateFactory)*; | 50 using DWriteCreateFactoryProc = decltype(DWriteCreateFactory)*; |
| 54 HMODULE dwrite_dll = LoadLibraryW(L"dwrite.dll"); | 51 HMODULE dwrite_dll = LoadLibraryW(L"dwrite.dll"); |
| 55 if (!dwrite_dll) | 52 if (!dwrite_dll) |
| 56 return; | 53 return; |
| 57 | 54 |
| 58 DWriteCreateFactoryProc dwrite_create_factory_proc = | 55 DWriteCreateFactoryProc dwrite_create_factory_proc = |
| 59 reinterpret_cast<DWriteCreateFactoryProc>( | 56 reinterpret_cast<DWriteCreateFactoryProc>( |
| 60 GetProcAddress(dwrite_dll, "DWriteCreateFactory")); | 57 GetProcAddress(dwrite_dll, "DWriteCreateFactory")); |
| 61 // Not finding the DWriteCreateFactory function indicates a corrupt dll. | 58 // Not finding the DWriteCreateFactory function indicates a corrupt dll. |
| 62 if (!dwrite_create_factory_proc) | 59 if (!dwrite_create_factory_proc) |
| 63 return; | 60 return; |
| 64 | 61 |
| 65 // Failure to create the DirectWrite factory indicates a corrupt dll. | 62 // Failure to create the DirectWrite factory indicates a corrupt dll. |
| 66 base::win::ScopedComPtr<IUnknown> factory_unknown; | 63 base::win::ScopedComPtr<IUnknown> factory_unknown; |
| 67 if (FAILED(dwrite_create_factory_proc(DWRITE_FACTORY_TYPE_SHARED, | 64 if (FAILED(dwrite_create_factory_proc(DWRITE_FACTORY_TYPE_SHARED, |
| 68 __uuidof(IDWriteFactory), | 65 __uuidof(IDWriteFactory), |
| 69 factory_unknown.Receive()))) { | 66 factory_unknown.Receive()))) { |
| 70 return; | 67 return; |
| 71 } | 68 } |
| 72 factory_unknown.QueryInterface<IDWriteFactory>(factory); | 69 factory_unknown.QueryInterface<IDWriteFactory>(factory); |
| 73 } | 70 } |
| 74 | 71 |
| 75 void MaybeInitializeDirectWrite() { | 72 void MaybeInitializeDirectWrite() { |
| 76 static bool tried_dwrite_initialize = false; | 73 static bool tried_dwrite_initialize = false; |
| 77 if (tried_dwrite_initialize) | 74 if (tried_dwrite_initialize) |
| 78 return; | 75 return; |
| 79 tried_dwrite_initialize = true; | 76 tried_dwrite_initialize = true; |
| 80 | 77 |
| 78 if (base::CommandLine::ForCurrentProcess()->HasSwitch( |
| 79 switches::kDisableDirectWriteForUI)) { |
| 80 return; |
| 81 } |
| 82 |
| 81 base::win::ScopedComPtr<IDWriteFactory> factory; | 83 base::win::ScopedComPtr<IDWriteFactory> factory; |
| 82 CreateDWriteFactory(factory.Receive()); | 84 CreateDWriteFactory(factory.Receive()); |
| 83 | 85 |
| 84 if (factory == nullptr) | 86 if (factory == nullptr) |
| 85 return; | 87 return; |
| 86 | 88 |
| 87 // The skia call to create a new DirectWrite font manager instance can fail | 89 // The skia call to create a new DirectWrite font manager instance can fail |
| 88 // if we are unable to get the system font collection from the DirectWrite | 90 // if we are unable to get the system font collection from the DirectWrite |
| 89 // factory. The GetSystemFontCollection method in the IDWriteFactory | 91 // factory. The GetSystemFontCollection method in the IDWriteFactory |
| 90 // interface fails with E_INVALIDARG on certain Windows 7 gold versions | 92 // interface fails with E_INVALIDARG on certain Windows 7 gold versions |
| 91 // (6.1.7600.*). We should just use GDI in these cases. | 93 // (6.1.7600.*). We should just use GDI in these cases. |
| 92 SkFontMgr* direct_write_font_mgr = SkFontMgr_New_DirectWrite(factory.get()); | 94 SkFontMgr* direct_write_font_mgr = SkFontMgr_New_DirectWrite(factory.get()); |
| 93 if (!direct_write_font_mgr) | 95 if (!direct_write_font_mgr) |
| 94 return; | 96 return; |
| 95 dwrite_enabled = true; | 97 dwrite_enabled = true; |
| 96 SetDefaultSkiaFactory(direct_write_font_mgr); | 98 SetDefaultSkiaFactory(direct_write_font_mgr); |
| 97 gfx::PlatformFontWin::SetDirectWriteFactory(factory.get()); | 99 gfx::PlatformFontWin::SetDirectWriteFactory(factory.get()); |
| 98 } | 100 } |
| 99 | 101 |
| 100 bool IsDirectWriteEnabled() { | 102 bool IsDirectWriteEnabled() { |
| 101 return dwrite_enabled; | 103 return dwrite_enabled; |
| 102 } | 104 } |
| 103 | 105 |
| 104 } // namespace win | 106 } // namespace win |
| 105 } // namespace gfx | 107 } // namespace gfx |
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