gfx/skia/trunk/src/core/SkDeviceProfile.cpp@97036ab72558
gfx/skia/trunk/src/core/SkDeviceProfile.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /*
2 * Copyright 2012 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
9 #include "SkDeviceProfile.h"
10 #include "SkThread.h"
12 #define DEFAULT_GAMMAEXP 2.2f
13 #define DEFAULT_CONTRASTSCALE 0.5f
14 #define DEFAULT_LCDCONFIG SkDeviceProfile::kNone_LCDConfig
15 #define DEFAULT_FONTHINTLEVEL SkDeviceProfile::kSlight_FontHintLevel
17 static float pin(float value, float min, float max) {
18 if (value < min) {
19 value = min;
20 } else if (value > max) {
21 value = max;
22 }
23 return value;
24 }
26 SkDeviceProfile::SkDeviceProfile(float gammaExp, float contrast,
27 LCDConfig config, FontHintLevel level) {
28 fGammaExponent = pin(gammaExp, 0, 10);
29 fContrastScale = pin(contrast, 0, 1);
30 fLCDConfig = config;
31 fFontHintLevel = level;
32 }
34 void SkDeviceProfile::generateTableForLuminanceByte(U8CPU lumByte,
35 uint8_t table[256]) const {
36 }
38 ///////////////////////////////////////////////////////////////////////////////
40 SkDeviceProfile* SkDeviceProfile::Create(float gammaExp,
41 float contrast,
42 LCDConfig config,
43 FontHintLevel level) {
44 return SkNEW_ARGS(SkDeviceProfile, (gammaExp, contrast, config, level));
45 }
47 SK_DECLARE_STATIC_MUTEX(gMutex);
48 static SkDeviceProfile* gDefaultProfile;
49 static SkDeviceProfile* gGlobalProfile;
51 SkDeviceProfile* SkDeviceProfile::GetDefault() {
52 SkAutoMutexAcquire amc(gMutex);
54 if (NULL == gDefaultProfile) {
55 gDefaultProfile = SkDeviceProfile::Create(DEFAULT_GAMMAEXP,
56 DEFAULT_CONTRASTSCALE,
57 DEFAULT_LCDCONFIG,
58 DEFAULT_FONTHINTLEVEL);
59 }
60 return gDefaultProfile;
61 }
63 SkDeviceProfile* SkDeviceProfile::RefGlobal() {
64 SkAutoMutexAcquire amc(gMutex);
66 if (NULL == gGlobalProfile) {
67 gGlobalProfile = SkDeviceProfile::GetDefault();
68 }
69 gGlobalProfile->ref();
70 return gGlobalProfile;
71 }
73 void SkDeviceProfile::SetGlobal(SkDeviceProfile* profile) {
74 SkAutoMutexAcquire amc(gMutex);
76 SkRefCnt_SafeAssign(gGlobalProfile, profile);
77 }
