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, 68 insertions, 0 deletions

diff --git a/include/vcl/bitmap/BitmapTypes.hxx b/include/vcl/bitmap/BitmapTypes.hxx
new file mode 100644
index 000000000..10d0f5332
--- /dev/null
+++ b/include/vcl/bitmap/BitmapTypes.hxx
@@ -0,0 +1,68 @@
+/* -*- 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/.
+ *
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <cassert>
+
+namespace vcl
+{
+/** Pixel format of the bitmap in bits per pixel */
+enum class PixelFormat
+{
+    INVALID = 0,
+    N1_BPP = 1,
+    N8_BPP = 8,
+    N24_BPP = 24,
+    N32_BPP = 32
+};
+
+/** Is it a pixel format that forces creation of a palette */
+constexpr bool isPalettePixelFormat(PixelFormat ePixelFormat)
+{
+    assert(ePixelFormat != PixelFormat::INVALID);
+    return sal_uInt16(ePixelFormat) <= 8;
+}
+
+constexpr sal_uInt16 pixelFormatBitCount(PixelFormat ePixelFormat)
+{
+    return sal_uInt16(ePixelFormat);
+}
+
+constexpr sal_Int64 numberOfColors(PixelFormat ePixelFormat)
+{
+    return sal_Int64(1) << sal_Int64(ePixelFormat);
+}
+
+constexpr PixelFormat bitDepthToPixelFormat(sal_uInt16 nBitDepth)
+{
+    switch (nBitDepth)
+    {
+        case 1:
+            return PixelFormat::N1_BPP;
+        case 4:
+            assert(false);
+            break;
+        case 8:
+            return PixelFormat::N8_BPP;
+        case 24:
+            return PixelFormat::N24_BPP;
+        case 32:
+            return PixelFormat::N32_BPP;
+        default:
+            break;
+    }
+    return PixelFormat::INVALID;
+}
+
+} // end namespace vcl
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */