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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "ui/gfx/font_render_params.h" | |
| 6 | |
| 7 #include "base/memory/scoped_ptr.h" | |
| 8 #include "base/memory/singleton.h" | |
| 9 #include "ui/gfx/win/singleton_hwnd.h" | |
| 10 | |
| 11 namespace gfx { | |
| 12 | |
| 13 namespace { | |
| 14 | |
| 15 // Caches font render params and updates them on system notifications. | |
| 16 class CachedFontRenderParams : public gfx::SingletonHwnd::Observer { | |
| 17 public: | |
| 18 static CachedFontRenderParams* GetInstance() { | |
| 19 return Singleton<CachedFontRenderParams>::get(); | |
| 20 } | |
| 21 | |
| 22 const FontRenderParams& GetParams(bool for_web_contents) { | |
| 23 if (params_) | |
| 24 return *params_; | |
| 25 | |
| 26 params_.reset(new FontRenderParams()); | |
| 27 params_->antialiasing = false; | |
| 28 params_->subpixel_positioning = false; | |
| 29 params_->autohinter = false; | |
| 30 params_->use_bitmaps = false; | |
| 31 params_->hinting = FontRenderParams::HINTING_MEDIUM; | |
| 32 params_->subpixel_rendering = FontRenderParams::SUBPIXEL_RENDERING_NONE; | |
| 33 | |
| 34 BOOL enabled = false; | |
| 35 if (SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &enabled, 0) && enabled) { | |
| 36 params_->antialiasing = true; | |
| 37 // Subpixel positioning is not yet implemented for UI. crbug.com/389649 | |
| 38 params_->subpixel_positioning = for_web_contents; | |
| 39 | |
| 40 UINT type = 0; | |
| 41 if (SystemParametersInfo(SPI_GETFONTSMOOTHINGTYPE, 0, &type, 0) && | |
| 42 type == FE_FONTSMOOTHINGCLEARTYPE) { | |
| 43 params_->subpixel_rendering = FontRenderParams::SUBPIXEL_RENDERING_RGB; | |
| 44 } | |
| 45 } | |
| 46 gfx::SingletonHwnd::GetInstance()->AddObserver(this); | |
| 47 return *params_; | |
| 48 } | |
| 49 | |
| 50 private: | |
| 51 friend struct DefaultSingletonTraits<CachedFontRenderParams>; | |
| 52 | |
| 53 CachedFontRenderParams() {} | |
| 54 virtual ~CachedFontRenderParams() { | |
| 55 // Can't remove the SingletonHwnd observer here since SingletonHwnd may have | |
| 56 // been destroyed already (both singletons). | |
| 57 } | |
| 58 | |
| 59 virtual void OnWndProc(HWND hwnd, | |
| 60 UINT message, | |
| 61 WPARAM wparam, | |
| 62 LPARAM lparam) override { | |
| 63 if (message == WM_SETTINGCHANGE) { | |
| 64 params_.reset(); | |
| 65 gfx::SingletonHwnd::GetInstance()->RemoveObserver(this); | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 scoped_ptr<FontRenderParams> params_; | |
| 70 | |
| 71 DISALLOW_COPY_AND_ASSIGN(CachedFontRenderParams); | |
| 72 }; | |
| 73 | |
| 74 } // namespace | |
| 75 | |
| 76 FontRenderParams GetFontRenderParams(const FontRenderParamsQuery& query, | |
| 77 std::string* family_out) { | |
| 78 if (family_out) | |
| 79 NOTIMPLEMENTED(); | |
| 80 // Customized font rendering settings are not supported, only defaults. | |
| 81 return CachedFontRenderParams::GetInstance()->GetParams( | |
| 82 query.for_web_contents); | |
| 83 } | |
| 84 | |
| 85 } // namespace gfx | |
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Chromium Code Reviews
Issue 854713003:
More old files deletion. (Closed)
Base URL: https://github.com/domokit/mojo.git@master