skia/quartz/cgutils.h

Go to the documentation of this file.

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */
 
#pragma once
 
constexpr uint32_t SkiaToCGBitmapType(SkColorType color, SkAlphaType alpha)
{
    if (alpha == kPremul_SkAlphaType)
    {
        return color == kBGRA_8888_SkColorType
                   ? (uint32_t(kCGImageAlphaPremultipliedFirst)
                      | uint32_t(kCGBitmapByteOrder32Little))
                   : (uint32_t(kCGImageAlphaPremultipliedLast) | uint32_t(kCGBitmapByteOrder32Big));
    }
    else
    {
        assert(alpha == kOpaque_SkAlphaType);
        return color == kBGRA_8888_SkColorType
                   ? (uint32_t(kCGImageAlphaNoneSkipFirst) | uint32_t(kCGBitmapByteOrder32Little))
                   : (uint32_t(kCGImageAlphaNoneSkipLast) | uint32_t(kCGBitmapByteOrder32Big));
    }
}
 
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */