Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

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

1 files changed, 285 insertions, 0 deletions

diff --git a/include/vcl/bitmapaccess.hxx b/include/vcl/bitmapaccess.hxx
new file mode 100644
index 000000000..da29fee9a
--- /dev/null
+++ b/include/vcl/bitmapaccess.hxx
@@ -0,0 +1,285 @@
+/* -*- 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_BMPACC_HXX
+#define INCLUDED_VCL_BMPACC_HXX
+
+#include <vcl/dllapi.h>
+#include <vcl/bitmap.hxx>
+#include <vcl/Scanline.hxx>
+#include <vcl/BitmapBuffer.hxx>
+#include <vcl/BitmapColor.hxx>
+#include <vcl/BitmapAccessMode.hxx>
+
+typedef BitmapColor (*FncGetPixel)(ConstScanline pScanline, long nX, const ColorMask& rMask);
+typedef void (*FncSetPixel)(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+
+class VCL_DLLPUBLIC BitmapInfoAccess
+{
+    friend class BitmapReadAccess;
+
+public:
+    BitmapInfoAccess(Bitmap& rBitmap, BitmapAccessMode nMode = BitmapAccessMode::Info);
+    virtual ~BitmapInfoAccess();
+
+    bool operator!() const
+    {
+        return mpBuffer == nullptr;
+    }
+
+    long Width() const
+    {
+        return mpBuffer ? mpBuffer->mnWidth : 0L;
+    }
+
+    long Height() const
+    {
+        return mpBuffer ? mpBuffer->mnHeight : 0L;
+    }
+
+    bool IsTopDown() const
+    {
+        assert(mpBuffer && "Access is not valid!");
+
+        return mpBuffer && (mpBuffer->mnFormat & ScanlineFormat::TopDown);
+    }
+
+    bool IsBottomUp() const
+    {
+        return !IsTopDown();
+    }
+
+    ScanlineFormat GetScanlineFormat() const
+    {
+        assert(mpBuffer && "Access is not valid!");
+
+        return mpBuffer ? RemoveScanline(mpBuffer->mnFormat) : ScanlineFormat::NONE;
+    }
+
+    sal_uInt32 GetScanlineSize() const
+    {
+        assert(mpBuffer && "Access is not valid!");
+
+        return mpBuffer ? mpBuffer->mnScanlineSize : 0;
+    }
+
+    sal_uInt16 GetBitCount() const
+    {
+        assert(mpBuffer && "Access is not valid!");
+
+        return mpBuffer ? mpBuffer->mnBitCount : 0;
+    }
+
+    BitmapColor GetBestMatchingColor(const BitmapColor& rBitmapColor)
+    {
+        if (HasPalette())
+            return BitmapColor(static_cast<sal_uInt8>(GetBestPaletteIndex(rBitmapColor)));
+        else
+            return rBitmapColor;
+    }
+
+    bool HasPalette() const
+    {
+        assert(mpBuffer && "Access is not valid!");
+
+        return mpBuffer && !!mpBuffer->maPalette;
+    }
+
+    const BitmapPalette& GetPalette() const
+    {
+        assert(mpBuffer && "Access is not valid!");
+
+        return mpBuffer->maPalette;
+    }
+
+    sal_uInt16 GetPaletteEntryCount() const
+    {
+        assert(HasPalette() && "Bitmap has no palette!");
+
+        return HasPalette() ? mpBuffer->maPalette.GetEntryCount() : 0;
+    }
+
+    const BitmapColor& GetPaletteColor( sal_uInt16 nColor ) const
+    {
+        assert(mpBuffer && "Access is not valid!");
+        assert(HasPalette() && "Bitmap has no palette!");
+
+        return mpBuffer->maPalette[nColor];
+    }
+
+    const BitmapColor& GetBestPaletteColor(const BitmapColor& rBitmapColor) const
+    {
+        return GetPaletteColor(GetBestPaletteIndex(rBitmapColor));
+    }
+
+    sal_uInt16 GetBestPaletteIndex(const BitmapColor& rBitmapColor) const;
+
+    ColorMask& GetColorMask() const
+    {
+        assert(mpBuffer && "Access is not valid!");
+
+        return mpBuffer->maColorMask;
+    }
+
+private:
+    BitmapInfoAccess(const BitmapInfoAccess&) = delete;
+    BitmapInfoAccess& operator=(const BitmapInfoAccess&) = delete;
+
+protected:
+    Bitmap maBitmap;
+    BitmapBuffer* mpBuffer;
+    ColorMask maColorMask;
+    BitmapAccessMode mnAccessMode;
+};
+
+
+class VCL_DLLPUBLIC BitmapReadAccess : public BitmapInfoAccess
+{
+    friend class BitmapWriteAccess;
+
+public:
+    BitmapReadAccess(Bitmap& rBitmap, BitmapAccessMode nMode = BitmapAccessMode::Read);
+    virtual ~BitmapReadAccess() override;
+
+    Scanline GetBuffer() const
+    {
+        assert(mpBuffer && "Access is not valid!");
+
+        return mpBuffer ? mpBuffer->mpBits : nullptr;
+    }
+
+    Scanline GetScanline(long nY) const
+    {
+        assert(mpBuffer && "Access is not valid!");
+        assert(nY < mpBuffer->mnHeight && "y-coordinate out of range!");
+
+        if (mpBuffer->mnFormat & ScanlineFormat::TopDown)
+        {
+            return mpBuffer->mpBits + (nY * mpBuffer->mnScanlineSize);
+        }
+        return mpBuffer->mpBits + ((mpBuffer->mnHeight - 1 - nY) * mpBuffer->mnScanlineSize);
+    }
+
+    BitmapColor GetPixelFromData(const sal_uInt8* pData, long nX) const
+    {
+        assert(pData && "Access is not valid!");
+
+        return mFncGetPixel( pData, nX, maColorMask );
+    }
+
+    sal_uInt8 GetIndexFromData(const sal_uInt8* pData, long nX) const
+    {
+        return GetPixelFromData( pData, nX ).GetIndex();
+    }
+
+    void SetPixelOnData(sal_uInt8* pData, long nX, const BitmapColor& rBitmapColor)
+    {
+        assert(pData && "Access is not valid!");
+
+        mFncSetPixel(pData, nX, rBitmapColor, maColorMask);
+    }
+
+    BitmapColor GetPixel(long nY, long nX) const
+    {
+        assert(mpBuffer && "Access is not valid!");
+        assert(nX < mpBuffer->mnWidth && "x-coordinate out of range!");
+        assert(nY < mpBuffer->mnHeight && "y-coordinate out of range!");
+
+        return mFncGetPixel(GetScanline(nY), nX, maColorMask );
+    }
+
+    BitmapColor GetColor(long nY, long nX) const
+    {
+        if (HasPalette())
+            return mpBuffer->maPalette[GetPixelIndex(nY, nX)];
+        else
+            return GetPixel(nY, nX);
+    }
+
+    sal_uInt8 GetPixelIndex(long nY, long nX) const
+    {
+        return GetPixel(nY, nX).GetIndex();
+    }
+
+    /** Get the interpolated color at coordinates fY, fX; if outside, return rFallback */
+    BitmapColor GetInterpolatedColorWithFallback( double fY, double fX, const BitmapColor& rFallback ) const;
+
+    /** Get the color at coordinates fY, fX; if outside, return rFallback. Automatically does the correct
+        inside/outside checks, e.g. static_cast< sal_uInt32 >(-0.25) *is* 0, not -1 and has to be outside */
+    BitmapColor GetColorWithFallback( double fY, double fX, const BitmapColor& rFallback ) const;
+
+private:
+    BitmapReadAccess(const BitmapReadAccess&) = delete;
+    BitmapReadAccess& operator=(const BitmapReadAccess&) = delete;
+
+protected:
+    FncGetPixel mFncGetPixel;
+    FncSetPixel mFncSetPixel;
+
+    SAL_DLLPRIVATE bool ImplSetAccessPointers( ScanlineFormat nFormat );
+
+public:
+
+    SAL_DLLPRIVATE BitmapBuffer* ImplGetBitmapBuffer() const
+    {
+        return mpBuffer;
+    }
+
+    static BitmapColor GetPixelForN1BitMsbPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN1BitLsbPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN4BitMsnPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN4BitLsnPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN8BitPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN8BitTcMask(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN24BitTcBgr(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN24BitTcRgb(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcAbgr(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcXbgr(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcArgb(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcXrgb(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcBgra(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcBgrx(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcRgba(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcRgbx(ConstScanline pScanline, long nX, const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcMask(ConstScanline pScanline, long nX, const ColorMask& rMask);
+
+    static void SetPixelForN1BitMsbPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN1BitLsbPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN4BitMsnPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN4BitLsnPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN8BitPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN8BitTcMask(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN24BitTcBgr(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN24BitTcRgb(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcAbgr(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcXbgr(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcArgb(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcXrgb(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcBgra(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcBgrx(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcRgba(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcRgbx(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcMask(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
+
+};
+
+
+#endif // INCLUDED_VCL_BMPACC_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */