gfx/skia/trunk/include/effects/SkArithmeticMode.h@129ffea94266
gfx/skia/trunk/include/effects/SkArithmeticMode.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
1 /*
2 * Copyright 2011 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 */
8 #ifndef SkArithmeticMode_DEFINED
9 #define SkArithmeticMode_DEFINED
11 #include "SkFlattenable.h"
12 #include "SkScalar.h"
14 class SkXfermode;
16 class SK_API SkArithmeticMode {
17 public:
18 /**
19 * result = clamp[k1 * src * dst + k2 * src + k3 * dst + k4]
20 *
21 * src and dst are treated as being [0.0 .. 1.0]. The polynomial is
22 * evaluated on their unpremultiplied components.
23 *
24 * k1=k2=k3=0, k4=1.0 results in returning opaque white
25 * k1=k3=k4=0, k2=1.0 results in returning the src
26 * k1=k2=k4=0, k3=1.0 results in returning the dst
27 */
28 static SkXfermode* Create(SkScalar k1, SkScalar k2,
29 SkScalar k3, SkScalar k4);
31 SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP();
33 private:
34 SkArithmeticMode(); // can't be instantiated
35 };
37 #endif
