Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 98 insertions, 0 deletions

diff --git a/include/basegfx/pixel/bpixel.hxx b/include/basegfx/pixel/bpixel.hxx
new file mode 100644
index 000000000..50209ec2c
--- /dev/null
+++ b/include/basegfx/pixel/bpixel.hxx
@@ -0,0 +1,98 @@
+/* -*- 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
+
+#include <sal/types.h>
+#include <basegfx/color/bcolor.hxx>
+
+namespace basegfx
+{
+    class BPixel final
+    {
+        union
+        {
+            struct
+            {
+                unsigned                                mnR : 8;        // red intensity
+                unsigned                                mnG : 8;        // green intensity
+                unsigned                                mnB : 8;        // blue intensity
+                unsigned                                mnA : 8;        // opacity, 0 == full transparence
+            } maRGBA;
+
+            struct
+            {
+                unsigned                                mnValue : 32;   // all values
+            } maCombinedRGBA;
+        } maPixelUnion;
+
+    public:
+        BPixel()
+        {
+            maPixelUnion.maCombinedRGBA.mnValue = 0;
+        }
+
+        // use explicit here to make sure everyone knows what he is doing. Values range from
+        // 0..255 integer here.
+        explicit BPixel(sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue, sal_uInt8 nAlpha)
+        {
+            maPixelUnion.maRGBA.mnR = nRed;
+            maPixelUnion.maRGBA.mnG = nGreen;
+            maPixelUnion.maRGBA.mnB = nBlue;
+            maPixelUnion.maRGBA.mnA = nAlpha;
+        }
+
+        // constructor from BColor which uses double precision color, so change it
+        // to local integer format. It will also be clamped here.
+        BPixel(const BColor& rColor, sal_uInt8 nAlpha)
+        {
+            maPixelUnion.maRGBA.mnR = sal_uInt8((rColor.getRed() * 255.0) + 0.5);
+            maPixelUnion.maRGBA.mnG = sal_uInt8((rColor.getGreen() * 255.0) + 0.5);
+            maPixelUnion.maRGBA.mnB = sal_uInt8((rColor.getBlue() * 255.0) + 0.5);
+            maPixelUnion.maRGBA.mnA = nAlpha;
+        }
+
+        // data access read
+        sal_uInt8 getRed() const { return maPixelUnion.maRGBA.mnR; }
+        sal_uInt8 getGreen() const { return maPixelUnion.maRGBA.mnG; }
+        sal_uInt8 getBlue() const { return maPixelUnion.maRGBA.mnB; }
+        sal_uInt8 getAlpha() const { return maPixelUnion.maRGBA.mnA; }
+
+        // data access write
+        void setRed(sal_uInt8 nNew) { maPixelUnion.maRGBA.mnR = nNew; }
+        void setGreen(sal_uInt8 nNew) { maPixelUnion.maRGBA.mnG = nNew; }
+        void setBlue(sal_uInt8 nNew) { maPixelUnion.maRGBA.mnB = nNew; }
+        void setAlpha(sal_uInt8 nNew) { maPixelUnion.maRGBA.mnA = nNew; }
+
+        // comparators
+        bool operator==( const BPixel& rPixel ) const
+        {
+            return (rPixel.maPixelUnion.maCombinedRGBA.mnValue == maPixelUnion.maCombinedRGBA.mnValue);
+        }
+
+        bool operator!=( const BPixel& rPixel ) const
+        {
+            return (rPixel.maPixelUnion.maCombinedRGBA.mnValue != maPixelUnion.maCombinedRGBA.mnValue);
+        }
+    };
+
+
+} // end of namespace basegfx
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */