| // Copyright 2017 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. |
| |
| #ifndef CONTENT_CHILD_CHILD_PROCESS_SANDBOX_SUPPORT_IMPL_LINUX_H_ |
| #define CONTENT_CHILD_CHILD_PROCESS_SANDBOX_SUPPORT_IMPL_LINUX_H_ |
| |
| #include <stdint.h> |
| |
| #include <map> |
| |
| #include "base/macros.h" |
| #include "base/synchronization/lock.h" |
| #include "base/thread_annotations.h" |
| #include "components/services/font/public/cpp/font_loader.h" |
| #include "third_party/blink/public/platform/linux/web_sandbox_support.h" |
| #include "third_party/skia/include/core/SkRefCnt.h" |
| #include "ui/gfx/font_fallback_linux.h" |
| |
| namespace blink { |
| struct WebFontRenderStyle; |
| } |
| |
| namespace content { |
| |
| // Child-process implementation of the Blink interface that sandboxed processes |
| // use to obtain data from the privileged process (browser), which would |
| // otherwise be blocked by the sandbox. |
| class WebSandboxSupportLinux : public blink::WebSandboxSupport { |
| public: |
| explicit WebSandboxSupportLinux(sk_sp<font_service::FontLoader> font_loader); |
| ~WebSandboxSupportLinux() override; |
| |
| // |fallback_font| will be filled with a font family which provides glyphs for |
| // the Unicode code point specified by |character|, a UTF-32 character. |
| // |preferred_locale| contains the preferred locale identifier for |
| // |character|. Returns false if the request could not be satisfied. |
| bool GetFallbackFontForCharacter( |
| blink::WebUChar32 character, |
| const char* preferred_locale, |
| gfx::FallbackFontData* fallback_font) override; |
| |
| // Matches a font uniquely by postscript name or full font name. Used in |
| // Blink for @font-face { src: local(arg) } matching. Provide full font name |
| // or postscript name as argument font_unique_name in UTF-8. |fallback_font| |
| // contains a filename and fontconfig interface id if a match was found. |
| // Returns false, otherwise. |
| bool MatchFontByPostscriptNameOrFullFontName( |
| const char* font_unique_name, |
| gfx::FallbackFontData* fallback_font) override; |
| |
| // Returns rendering settings for a provided font family, size, and style. |
| // |size_and_style| stores the bold setting in its least-significant bit, the |
| // italic setting in its second-least-significant bit, and holds the requested |
| // size in pixels into its remaining bits. |
| void GetWebFontRenderStyleForStrike(const char* family, |
| int size, |
| bool is_bold, |
| bool is_italic, |
| float device_scale_factor, |
| blink::WebFontRenderStyle* out) override; |
| |
| private: |
| // Blink calls GetFallbackFontForCharacter frequently, so the results are |
| // cached. The cache is protected by this lock. |
| base::Lock lock_; |
| // Maps unicode chars to their fallback fonts. |
| std::map<int32_t, gfx::FallbackFontData> unicode_font_families_ |
| GUARDED_BY(lock_); |
| |
| sk_sp<font_service::FontLoader> font_loader_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WebSandboxSupportLinux); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_CHILD_CHILD_PROCESS_SANDBOX_SUPPORT_IMPL_LINUX_H_ |