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// 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.
#ifndef CONTENT_PUBLIC_COMMON_DWRITE_FONT_PLATFORM_WIN_H_
#define CONTENT_PUBLIC_COMMON_DWRITE_FONT_PLATFORM_WIN_H_
#include "base/files/file.h"
#include "content/common/content_export.h"
struct IDWriteFactory;
struct IDWriteFontCollection;
namespace content {
// This is the shared section that is used between browser and renderer for
// loading font cache. Section name is suffixed with browser process id so that
// multiple instance chrome scenario works fine.
CONTENT_EXPORT extern const char kFontCacheSharedSectionName[];
// Function returns custom font collection in terms of IDWriteFontCollection.
// This function maintains singleton instance of font collection and returns
// it on repeated calls.
CONTENT_EXPORT IDWriteFontCollection* GetCustomFontCollection(
IDWriteFactory* factory);
// Builds static font cache. As this function need to iterate through all
// available fonts in the system, it may take a while.
CONTENT_EXPORT bool BuildFontCache(const base::FilePath& file);
// Loads font cache from file. This is supposed to be used from browser
// side where loading means creating readonly shared memory file mapping so that
// renderers can read from it.
CONTENT_EXPORT bool LoadFontCache(const base::FilePath& path);
// Added in header mainly for unittest
CONTENT_EXPORT bool ValidateFontCacheFile(base::File* file);
// Determines whether code should use the DirectWrite font proxy codepath.
// Note that this function only checks whether the field trial is enabled.
// Callers are still expected to take appropriate action based on the return
// value.
CONTENT_EXPORT bool ShouldUseDirectWriteFontProxyFieldTrial();
} // namespace content
#endif // CONTENT_PUBLIC_COMMON_DWRITE_FONT_PLATFORM_WIN_H_
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