gfx/skia/trunk/src/effects/SkLerpXfermode.cpp@129ffea94266 (annotated)
gfx/skia/trunk/src/effects/SkLerpXfermode.cpp
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.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2013 Google Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "SkLerpXfermode.h" |
| michael@0 | 9 | #include "SkColorPriv.h" |
| michael@0 | 10 | #include "SkReadBuffer.h" |
| michael@0 | 11 | #include "SkWriteBuffer.h" |
| michael@0 | 12 | #include "SkString.h" |
| michael@0 | 13 | |
| michael@0 | 14 | SkXfermode* SkLerpXfermode::Create(SkScalar scale) { |
| michael@0 | 15 | int scale256 = SkScalarRoundToInt(scale * 256); |
| michael@0 | 16 | if (scale256 >= 256) { |
| michael@0 | 17 | return SkXfermode::Create(SkXfermode::kSrc_Mode); |
| michael@0 | 18 | } else if (scale256 <= 0) { |
| michael@0 | 19 | return SkXfermode::Create(SkXfermode::kDst_Mode); |
| michael@0 | 20 | } |
| michael@0 | 21 | return SkNEW_ARGS(SkLerpXfermode, (scale256)); |
| michael@0 | 22 | } |
| michael@0 | 23 | |
| michael@0 | 24 | SkLerpXfermode::SkLerpXfermode(unsigned scale256) : fScale256(scale256) {} |
| michael@0 | 25 | |
| michael@0 | 26 | SkLerpXfermode::SkLerpXfermode(SkReadBuffer& buffer) |
| michael@0 | 27 | : INHERITED(buffer) { |
| michael@0 | 28 | fScale256 = buffer.readUInt(); |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | void SkLerpXfermode::flatten(SkWriteBuffer& buffer) const { |
| michael@0 | 32 | this->INHERITED::flatten(buffer); |
| michael@0 | 33 | buffer.writeUInt(fScale256); |
| michael@0 | 34 | } |
| michael@0 | 35 | |
| michael@0 | 36 | void SkLerpXfermode::xfer32(SkPMColor dst[], const SkPMColor src[], int count, |
| michael@0 | 37 | const SkAlpha aa[]) const { |
| michael@0 | 38 | const int scale = fScale256; |
| michael@0 | 39 | |
| michael@0 | 40 | if (aa) { |
| michael@0 | 41 | for (int i = 0; i < count; ++i) { |
| michael@0 | 42 | unsigned a = aa[i]; |
| michael@0 | 43 | if (a) { |
| michael@0 | 44 | SkPMColor dstC = dst[i]; |
| michael@0 | 45 | SkPMColor resC = SkFastFourByteInterp256(src[i], dstC, scale); |
| michael@0 | 46 | if (a < 255) { |
| michael@0 | 47 | resC = SkFastFourByteInterp256(resC, dstC, a + (a >> 7)); |
| michael@0 | 48 | } |
| michael@0 | 49 | dst[i] = resC; |
| michael@0 | 50 | } |
| michael@0 | 51 | } |
| michael@0 | 52 | } else { |
| michael@0 | 53 | for (int i = 0; i < count; ++i) { |
| michael@0 | 54 | dst[i] = SkFastFourByteInterp256(src[i], dst[i], scale); |
| michael@0 | 55 | } |
| michael@0 | 56 | } |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | void SkLerpXfermode::xfer16(uint16_t dst[], const SkPMColor src[], int count, |
| michael@0 | 60 | const SkAlpha aa[]) const { |
| michael@0 | 61 | const int scale = fScale256; |
| michael@0 | 62 | |
| michael@0 | 63 | if (aa) { |
| michael@0 | 64 | for (int i = 0; i < count; ++i) { |
| michael@0 | 65 | unsigned a = aa[i]; |
| michael@0 | 66 | if (a) { |
| michael@0 | 67 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| michael@0 | 68 | SkPMColor resC = SkFastFourByteInterp256(src[i], dstC, scale); |
| michael@0 | 69 | if (a < 255) { |
| michael@0 | 70 | resC = SkFastFourByteInterp256(resC, dstC, a + (a >> 7)); |
| michael@0 | 71 | } |
| michael@0 | 72 | dst[i] = SkPixel32ToPixel16(resC); |
| michael@0 | 73 | } |
| michael@0 | 74 | } |
| michael@0 | 75 | } else { |
| michael@0 | 76 | for (int i = 0; i < count; ++i) { |
| michael@0 | 77 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| michael@0 | 78 | SkPMColor resC = SkFastFourByteInterp256(src[i], dstC, scale); |
| michael@0 | 79 | dst[i] = SkPixel32ToPixel16(resC); |
| michael@0 | 80 | } |
| michael@0 | 81 | } |
| michael@0 | 82 | } |
| michael@0 | 83 | |
| michael@0 | 84 | void SkLerpXfermode::xferA8(SkAlpha dst[], const SkPMColor src[], int count, |
| michael@0 | 85 | const SkAlpha aa[]) const { |
| michael@0 | 86 | const int scale = fScale256; |
| michael@0 | 87 | |
| michael@0 | 88 | if (aa) { |
| michael@0 | 89 | for (int i = 0; i < count; ++i) { |
| michael@0 | 90 | unsigned a = aa[i]; |
| michael@0 | 91 | if (a) { |
| michael@0 | 92 | unsigned dstA = dst[i]; |
| michael@0 | 93 | unsigned resA = SkAlphaBlend(SkGetPackedA32(src[i]), dstA, scale); |
| michael@0 | 94 | if (a < 255) { |
| michael@0 | 95 | resA = SkAlphaBlend(resA, dstA, a + (a >> 7)); |
| michael@0 | 96 | } |
| michael@0 | 97 | dst[i] = resA; |
| michael@0 | 98 | } |
| michael@0 | 99 | } |
| michael@0 | 100 | } else { |
| michael@0 | 101 | for (int i = 0; i < count; ++i) { |
| michael@0 | 102 | dst[i] = SkAlphaBlend(SkGetPackedA32(src[i]), dst[i], scale); |
| michael@0 | 103 | } |
| michael@0 | 104 | } |
| michael@0 | 105 | } |
| michael@0 | 106 | |
| michael@0 | 107 | #ifndef SK_IGNORE_TO_STRING |
| michael@0 | 108 | void SkLerpXfermode::toString(SkString* str) const { |
| michael@0 | 109 | str->printf("SkLerpXfermode: scale: %g", fScale256 / 256.0); |
| michael@0 | 110 | } |
| michael@0 | 111 | #endif |
