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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
commit267c6f2ac71f92999e969232431ba04678e7437e (patch)
tree358c9467650e1d0a1d7227a21dac2e3d08b622b2 /include/vcl/RawBitmap.hxx
parentInitial commit. (diff)
downloadlibreoffice-267c6f2ac71f92999e969232431ba04678e7437e.tar.xz
libreoffice-267c6f2ac71f92999e969232431ba04678e7437e.zip
Adding upstream version 4:24.2.0.upstream/4%24.2.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/vcl/RawBitmap.hxx')
-rw-r--r--include/vcl/RawBitmap.hxx79
1 files changed, 79 insertions, 0 deletions
diff --git a/include/vcl/RawBitmap.hxx b/include/vcl/RawBitmap.hxx
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+++ b/include/vcl/RawBitmap.hxx
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+/* -*- 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 <o3tl/safeint.hxx>
+#include <vcl/BitmapColor.hxx>
+#include <vcl/bitmapex.hxx>
+
+namespace vcl::bitmap
+{
+/**
+ * Intended to be used to feed into CreateFromData to create a BitmapEx. RGB data format.
+ */
+class VCL_DLLPUBLIC RawBitmap
+{
+ friend BitmapEx VCL_DLLPUBLIC CreateFromData(RawBitmap&& rawBitmap);
+ std::unique_ptr<sal_uInt8[]> mpData;
+ Size maSize;
+ sal_uInt8 mnBitCount;
+
+public:
+ RawBitmap(Size const& rSize, sal_uInt8 nBitCount)
+ : maSize(rSize)
+ , mnBitCount(nBitCount)
+ {
+ assert(nBitCount == 24 || nBitCount == 32);
+ if (rSize.getWidth() > std::numeric_limits<sal_Int32>::max() || rSize.getWidth() < 0)
+ throw std::bad_alloc();
+ if (rSize.getHeight() > std::numeric_limits<sal_Int32>::max() || rSize.getHeight() < 0)
+ throw std::bad_alloc();
+ sal_Int32 nRowSize, nDataSize;
+ if (o3tl::checked_multiply<sal_Int32>(rSize.getWidth(), nBitCount / 8, nRowSize)
+ || o3tl::checked_multiply<sal_Int32>(nRowSize, rSize.getHeight(), nDataSize)
+ || nDataSize < 0)
+ {
+ throw std::bad_alloc();
+ }
+ mpData.reset(new sal_uInt8[nDataSize]);
+ }
+ void SetPixel(tools::Long nY, tools::Long nX, Color nColor)
+ {
+ tools::Long p = (nY * maSize.getWidth() + nX) * (mnBitCount / 8);
+ mpData[p++] = nColor.GetRed();
+ mpData[p++] = nColor.GetGreen();
+ mpData[p++] = nColor.GetBlue();
+ if (mnBitCount == 32)
+ mpData[p] = nColor.GetAlpha();
+ }
+ void SetAlpha(tools::Long nY, tools::Long nX, sal_uInt8 nAlpha)
+ {
+ assert(mnBitCount == 32);
+ tools::Long p = (nY * maSize.getWidth() + nX) * (mnBitCount / 8) + 3;
+ mpData[p] = nAlpha;
+ }
+ Color GetPixel(tools::Long nY, tools::Long nX) const
+ {
+ tools::Long p = (nY * maSize.getWidth() + nX) * mnBitCount / 8;
+ if (mnBitCount == 24)
+ return Color(mpData[p], mpData[p + 1], mpData[p + 2]);
+ else
+ return Color(ColorAlpha, mpData[p + 3], mpData[p], mpData[p + 1], mpData[p + 2]);
+ }
+ // so we don't accidentally leave any code in that uses palette color indexes
+ void SetPixel(tools::Long nY, tools::Long nX, BitmapColor nColor) = delete;
+ tools::Long Height() const { return maSize.Height(); }
+ tools::Long Width() const { return maSize.Width(); }
+ sal_uInt8 GetBitCount() const { return mnBitCount; }
+};
+
+} // end vcl::bitmap
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */