SkGraphics.h revision ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976e 
1
2/*
3 * Copyright 2006 The Android Open Source Project
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10#ifndef SkGraphics_DEFINED
11#define SkGraphics_DEFINED
12
13#include "SkTypes.h"
14
15class SkGraphics {
16public:
17    static void Init();
18    static void Term();
19
20    /** Return the (approximate) number of bytes used by the font cache.
21    */
22    static size_t GetFontCacheUsed();
23
24    /** Attempt to purge the font cache until <= the specified amount remains
25        in the cache. Specifying 0 will attempt to purge the entire cache.
26        Returns true if some amount was purged from the font cache.
27    */
28    static bool SetFontCacheUsed(size_t usageInBytes);
29
30    /** Return the version numbers for the library. If the parameter is not
31        null, it is set to the version number.
32     */
33    static void GetVersion(int32_t* major, int32_t* minor, int32_t* patch);
34
35private:
36    /** This is automatically called by SkGraphics::Init(), and must be
37        implemented by the host OS. This allows the host OS to register a callback
38        with the C++ runtime to call SkGraphics::FreeCaches()
39    */
40    static void InstallNewHandler();
41};
42
43class SkAutoGraphics {
44public:
45    SkAutoGraphics() {
46        SkGraphics::Init();
47    }
48    ~SkAutoGraphics() {
49        SkGraphics::Term();
50    }
51};
52
53#endif
54
55