f86ab8472e
M include/core/SkGraphics.h M src/core/SkGraphics.cpp git-svn-id: http://skia.googlecode.com/svn/trunk@2887 2bbb7eff-a529-9590-31e7-b0007b416f81
88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
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/*
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* Copyright 2006 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkGraphics_DEFINED
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#define SkGraphics_DEFINED
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#include "SkTypes.h"
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class SkGraphics {
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public:
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/**
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* Call this at process initialization time if your environment does not
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* permit static global initializers that execute code. Note that
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* Init() is not thread-safe.
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*/
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static void Init();
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/**
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* Call this to release any memory held privately, such as the font cache.
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*/
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static void Term();
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/**
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* Return the version numbers for the library. If the parameter is not
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* null, it is set to the version number.
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*/
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static void GetVersion(int32_t* major, int32_t* minor, int32_t* patch);
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/**
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* Return the max number of bytes that should be used by the font cache.
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* If the cache needs to allocate more, it will purge previous entries.
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* This max can be changed by calling SetFontCacheLimit().
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*/
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static size_t GetFontCacheLimit();
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/**
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* Specify the max number of bytes that should be used by the font cache.
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* If the cache needs to allocate more, it will purge previous entries.
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*
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* This function returns the previous setting, as if GetFontCacheLimit()
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* had be called before the new limit was set.
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*/
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static size_t SetFontCacheLimit(size_t bytes);
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/**
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* For debugging purposes, this will attempt to purge the font cache. It
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* does not change the limit, but will cause subsequent font measures and
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* draws to be recreated, since they will no longer be in the cache.
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*/
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static void PurgeFontCache();
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/**
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* Applications with command line options may pass optional state, such
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* as cache sizes, here, for instance:
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* font-cache-limit=12345678
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*
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* The flags format is name=value[;name=value...] with no spaces.
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* This format is subject to change.
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*/
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static void SetFlags(const char* flags);
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private:
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/** This is automatically called by SkGraphics::Init(), and must be
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implemented by the host OS. This allows the host OS to register a callback
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with the C++ runtime to call SkGraphics::FreeCaches()
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*/
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static void InstallNewHandler();
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};
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class SkAutoGraphics {
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public:
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SkAutoGraphics() {
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SkGraphics::Init();
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}
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~SkAutoGraphics() {
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SkGraphics::Term();
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}
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};
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#endif
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