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, 134 insertions, 0 deletions

diff --git a/vcl/inc/salbmp.hxx b/vcl/inc/salbmp.hxx
new file mode 100644
index 000000000..f04ea291a
--- /dev/null
+++ b/vcl/inc/salbmp.hxx
@@ -0,0 +1,134 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_VCL_INC_SALBMP_HXX
+#define INCLUDED_VCL_INC_SALBMP_HXX
+
+#include <tools/gen.hxx>
+#include <tools/solar.h>
+#include <vcl/checksum.hxx>
+#include <vcl/BitmapAccessMode.hxx>
+#include <vcl/BitmapBuffer.hxx>
+#include <vcl/bitmap/BitmapTypes.hxx>
+#include <com/sun/star/rendering/XBitmapCanvas.hpp>
+
+struct BitmapBuffer;
+class Color;
+class SalGraphics;
+class BitmapPalette;
+struct BitmapSystemData;
+enum class BmpScaleFlag;
+
+extern const sal_uLong nVCLRLut[ 6 ];
+extern const sal_uLong nVCLGLut[ 6 ];
+extern const sal_uLong nVCLBLut[ 6 ];
+extern const sal_uLong nVCLDitherLut[ 256 ];
+extern const sal_uLong nVCLLut[ 256 ];
+
+class VCL_PLUGIN_PUBLIC SalBitmap
+{
+public:
+
+    SalBitmap()
+        : mnChecksum(0)
+        , mbChecksumValid(false)
+    {
+    }
+
+    virtual                 ~SalBitmap();
+
+    virtual bool            Create( const Size& rSize,
+                                    vcl::PixelFormat ePixelFormat,
+                                    const BitmapPalette& rPal ) = 0;
+    virtual bool            Create( const SalBitmap& rSalBmp ) = 0;
+    virtual bool            Create( const SalBitmap& rSalBmp,
+                                    SalGraphics* pGraphics ) = 0;
+    virtual bool            Create( const SalBitmap& rSalBmp,
+                                    vcl::PixelFormat eNewPixelFormat) = 0;
+    virtual bool            Create( const css::uno::Reference< css::rendering::XBitmapCanvas >& rBitmapCanvas,
+                                    Size& rSize,
+                                    bool bMask = false ) = 0;
+    virtual void            Destroy() = 0;
+    virtual Size            GetSize() const = 0;
+    virtual sal_uInt16      GetBitCount() const = 0;
+
+    virtual BitmapBuffer*   AcquireBuffer( BitmapAccessMode nMode ) = 0;
+    virtual void            ReleaseBuffer( BitmapBuffer* pBuffer, BitmapAccessMode nMode ) = 0;
+    virtual bool            GetSystemData( BitmapSystemData& rData ) = 0;
+
+    virtual bool            ScalingSupported() const = 0;
+    virtual bool            Scale( const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag ) = 0;
+    void                    DropScaledCache();
+
+    virtual bool            Replace( const Color& rSearchColor, const Color& rReplaceColor, sal_uInt8 nTol ) = 0;
+
+    virtual bool            ConvertToGreyscale()
+    {
+        return false;
+    }
+    virtual bool            InterpretAs8Bit()
+    {
+        return false;
+    }
+
+    virtual bool            Erase( const Color& /*color*/ )
+    {
+        return false;
+    }
+    // Optimized case for AlphaMask::BlendWith().
+    virtual bool            AlphaBlendWith( const SalBitmap& /*rSalBmp*/ )
+    {
+        return false;
+    }
+
+    BitmapChecksum GetChecksum() const
+    {
+        updateChecksum();
+        if (!mbChecksumValid)
+            return 0; // back-compat
+        return mnChecksum;
+    }
+
+    void InvalidateChecksum()
+    {
+        mbChecksumValid = false;
+    }
+
+protected:
+    BitmapChecksum mnChecksum;
+    bool           mbChecksumValid;
+
+protected:
+    void updateChecksum() const;
+    // helper function to convert data in 1,2,4 bpp formats to a 8/24/32bpp format
+    enum class BitConvert
+    {
+        A8,
+        RGBA,
+        BGRA,
+        LAST = BGRA
+    };
+    static std::unique_ptr< sal_uInt8[] > convertDataBitCount( const sal_uInt8* src,
+        int width, int height, int bitCount, int bytesPerRow, const BitmapPalette& palette,
+        BitConvert type );
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */