vcl/inc/skia/quartz/cgutils.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 constexpr uint32_t SkiaToCGBitmapType(SkColorType color, SkAlphaType alpha)
  23 {
  24     if (alpha == kPremul_SkAlphaType)
  25     {
  26         return color == kBGRA_8888_SkColorType
  27                    ? (uint32_t(kCGImageAlphaPremultipliedFirst)
  28                       | uint32_t(kCGBitmapByteOrder32Little))
  29                    : (uint32_t(kCGImageAlphaPremultipliedLast) | uint32_t(kCGBitmapByteOrder32Big));
  30     }
  31     else
  32     {
  33         assert(alpha == kOpaque_SkAlphaType);
  34         return color == kBGRA_8888_SkColorType
  35                    ? (uint32_t(kCGImageAlphaNoneSkipFirst) | uint32_t(kCGBitmapByteOrder32Little))
  36                    : (uint32_t(kCGImageAlphaNoneSkipLast) | uint32_t(kCGBitmapByteOrder32Big));
  37     }
  38 }
  39
  40 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */