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gfx/skia/trunk/src/effects/SkPorterDuff.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/effects/SkPorterDuff.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	/*
michael@0	3	* Copyright 2011 Google Inc.
michael@0	4	*
michael@0	5	* Use of this source code is governed by a BSD-style license that can be
michael@0	6	* found in the LICENSE file.
michael@0	7	*/
michael@0	8
michael@0	9
michael@0	10	#include "SkPorterDuff.h"
michael@0	11	#include "SkXfermode.h"
michael@0	12
michael@0	13	/* This file just exists as a compatibility layer, gluing the PorterDuff API
michael@0	14	into the (extended) SkXfermode API
michael@0	15	*/
michael@0	16
michael@0	17	#define MAKE_PAIR(mode) { SkPorterDuff::k##mode##_Mode, SkXfermode::k##mode##_Mode }
michael@0	18
michael@0	19	// this table must be in SkPorterDuff::Mode order, so it can be indexed directly
michael@0	20	// with a porterduff mode.
michael@0	21	static const struct Pair {
michael@0	22	SkPorterDuff::Mode fPD;
michael@0	23	SkXfermode::Mode fXF;
michael@0	24	} gPairs[] = {
michael@0	25	MAKE_PAIR(Clear),
michael@0	26	MAKE_PAIR(Src),
michael@0	27	MAKE_PAIR(Dst),
michael@0	28	MAKE_PAIR(SrcOver),
michael@0	29	MAKE_PAIR(DstOver),
michael@0	30	MAKE_PAIR(SrcIn),
michael@0	31	MAKE_PAIR(DstIn),
michael@0	32	MAKE_PAIR(SrcOut),
michael@0	33	MAKE_PAIR(DstOut),
michael@0	34	MAKE_PAIR(SrcATop),
michael@0	35	MAKE_PAIR(DstATop),
michael@0	36	MAKE_PAIR(Xor),
michael@0	37	MAKE_PAIR(Darken),
michael@0	38	MAKE_PAIR(Lighten),
michael@0	39	MAKE_PAIR(Modulate),
michael@0	40	MAKE_PAIR(Screen),
michael@0	41	{ SkPorterDuff::kAdd_Mode, SkXfermode::kPlus_Mode },
michael@0	42	#ifdef SK_BUILD_FOR_ANDROID
michael@0	43	MAKE_PAIR(Overlay),
michael@0	44	#endif
michael@0	45	};
michael@0	46
michael@0	47	static bool find_pdmode(SkXfermode::Mode src, SkPorterDuff::Mode* dst) {
michael@0	48	const Pair* pairs = gPairs;
michael@0	49	for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
michael@0	50	if (pairs[i].fXF == src) {
michael@0	51	if (dst) {
michael@0	52	*dst = pairs[i].fPD;
michael@0	53	}
michael@0	54	return true;
michael@0	55	}
michael@0	56	}
michael@0	57	return false;
michael@0	58	}
michael@0	59
michael@0	60	SkXfermode::Mode SkPorterDuff::ToXfermodeMode(Mode mode) {
michael@0	61	SkASSERT((unsigned)mode < SkPorterDuff::kModeCount);
michael@0	62	const Pair& pair = gPairs[mode];
michael@0	63	SkASSERT(pair.fPD == mode);
michael@0	64	return pair.fXF;
michael@0	65	}
michael@0	66
michael@0	67	SkXfermode* SkPorterDuff::CreateXfermode(SkPorterDuff::Mode mode) {
michael@0	68	const Pair& pair = gPairs[mode];
michael@0	69	SkASSERT(pair.fPD == mode);
michael@0	70	return SkXfermode::Create(pair.fXF);
michael@0	71	}
michael@0	72
michael@0	73	bool SkPorterDuff::IsMode(SkXfermode* xfer, Mode* pdmode) {
michael@0	74	SkXfermode::Mode xfmode;
michael@0	75	if (!SkXfermode::AsMode(xfer, &xfmode)) {
michael@0	76	return false;
michael@0	77	}
michael@0	78	return find_pdmode(xfmode, pdmode);
michael@0	79	}
michael@0	80
michael@0	81	SkXfermodeProc SkPorterDuff::GetXfermodeProc(Mode mode) {
michael@0	82	return SkXfermode::GetProc(gPairs[mode].fXF);
michael@0	83	}
michael@0	84
michael@0	85	SkXfermodeProc16 SkPorterDuff::GetXfermodeProc16(Mode mode, SkColor srcColor) {
michael@0	86	return SkXfermode::GetProc16(gPairs[mode].fXF, srcColor);
michael@0	87	}