skia2/include/ports/SkFontMgr_android.h
khushalsagar ebc465b8f2 Add support for caching font files in the Android SkFontMgr.
SkFontMgr_Android lazily access font files from disk, which is not
possible when it is used in the renderer sandbox on Linux. Add a flag to
SkFontMgr_Android_CustomFonts for caching readonly FILE streams when
creating the font mgr.

Since the font mgr is created before the sandbox is initialized, it can
access these files on initialization, and use these cached streams safely
for its lifetime.

Review URL: https://codereview.chromium.org/1673373003
2016-02-12 12:42:49 -08:00

53 lines
1.7 KiB
C++

/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkFontMgr_android_DEFINED
#define SkFontMgr_android_DEFINED
#include "SkTypes.h"
class SkFontMgr;
/**
* For test only -- this only affects the default factory.
* Load font config from given xml files, instead of those from Android system.
*/
SK_API void SkUseTestFontConfigFile(const char* mainconf, const char* fallbackconf,
const char* fontsdir);
struct SkFontMgr_Android_CustomFonts {
/** When specifying custom fonts, indicates how to use system fonts. */
enum SystemFontUse {
kOnlyCustom, /** Use only custom fonts. NDK compliant. */
kPreferCustom, /** Use custom fonts before system fonts. */
kPreferSystem /** Use system fonts before custom fonts. */
};
/** Whether or not to use system fonts. */
SystemFontUse fSystemFontUse;
/** Base path to resolve relative font file names. If a directory, should end with '/'. */
const char* fBasePath;
/** Optional custom configuration file to use. */
const char* fFontsXml;
/** Optional custom configuration file for fonts which provide fallback.
* In the new style (version > 21) fontsXml format is used, this should be NULL.
*/
const char* fFallbackFontsXml;
/** Optional custom flag. If set to true the SkFontMgr will acquire all requisite
* system IO resources on initialization.
*/
bool fIsolated;
};
/** Create a font manager for Android. If 'custom' is NULL, use only system fonts. */
SK_API SkFontMgr* SkFontMgr_New_Android(const SkFontMgr_Android_CustomFonts* custom);
#endif // SkFontMgr_android_DEFINED