vcl: move access functions into appropriate bitmap access files

Split class functions into BitmapInfoAccess.cxx, BitmapReadAccess.cxx
and BitmapWriteAccess.cxx

Split header files into BitmapInfoAccess.hxx and BitmapReadAccess.hxx

Change-Id: I7dcbe1d26c5b64d297658a6b809c93d7ad7f053d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/108039
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

1 files changed, 190 insertions, 0 deletions

diff --git a/include/vcl/BitmapReadAccess.hxx b/include/vcl/BitmapReadAccess.hxx
new file mode 100644
index 000000000000..845e9994aa6b
--- /dev/null
+++ b/include/vcl/BitmapReadAccess.hxx
@@ -0,0 +1,190 @@
+/* -*- 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_BITMAPREADACCESS_HXX
+#define INCLUDED_VCL_BITMAPREADACCESS_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>
+#include <vcl/BitmapInfoAccess.hxx>
+
+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(tools::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, tools::Long nX) const
+    {
+        assert(pData && "Access is not valid!");
+
+        return mFncGetPixel(pData, nX, maColorMask);
+    }
+
+    sal_uInt8 GetIndexFromData(const sal_uInt8* pData, tools::Long nX) const
+    {
+        return GetPixelFromData(pData, nX).GetIndex();
+    }
+
+    void SetPixelOnData(sal_uInt8* pData, tools::Long nX, const BitmapColor& rBitmapColor)
+    {
+        assert(pData && "Access is not valid!");
+
+        mFncSetPixel(pData, nX, rBitmapColor, maColorMask);
+    }
+
+    BitmapColor GetPixel(tools::Long nY, tools::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(tools::Long nY, tools::Long nX) const
+    {
+        if (HasPalette())
+            return mpBuffer->maPalette[GetPixelIndex(nY, nX)];
+        else
+            return GetPixel(nY, nX);
+    }
+
+    sal_uInt8 GetPixelIndex(tools::Long nY, tools::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;
+
+public:
+    SAL_DLLPRIVATE BitmapBuffer* ImplGetBitmapBuffer() const { return mpBuffer; }
+
+    static BitmapColor GetPixelForN1BitMsbPal(ConstScanline pScanline, tools::Long nX,
+                                              const ColorMask& rMask);
+    static BitmapColor GetPixelForN1BitLsbPal(ConstScanline pScanline, tools::Long nX,
+                                              const ColorMask& rMask);
+    static BitmapColor GetPixelForN4BitMsnPal(ConstScanline pScanline, tools::Long nX,
+                                              const ColorMask& rMask);
+    static BitmapColor GetPixelForN4BitLsnPal(ConstScanline pScanline, tools::Long nX,
+                                              const ColorMask& rMask);
+    static BitmapColor GetPixelForN8BitPal(ConstScanline pScanline, tools::Long nX,
+                                           const ColorMask& rMask);
+    static BitmapColor GetPixelForN24BitTcBgr(ConstScanline pScanline, tools::Long nX,
+                                              const ColorMask& rMask);
+    static BitmapColor GetPixelForN24BitTcRgb(ConstScanline pScanline, tools::Long nX,
+                                              const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcAbgr(ConstScanline pScanline, tools::Long nX,
+                                               const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcXbgr(ConstScanline pScanline, tools::Long nX,
+                                               const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcArgb(ConstScanline pScanline, tools::Long nX,
+                                               const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcXrgb(ConstScanline pScanline, tools::Long nX,
+                                               const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcBgra(ConstScanline pScanline, tools::Long nX,
+                                               const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcBgrx(ConstScanline pScanline, tools::Long nX,
+                                               const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcRgba(ConstScanline pScanline, tools::Long nX,
+                                               const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcRgbx(ConstScanline pScanline, tools::Long nX,
+                                               const ColorMask& rMask);
+    static BitmapColor GetPixelForN32BitTcMask(ConstScanline pScanline, tools::Long nX,
+                                               const ColorMask& rMask);
+
+    static void SetPixelForN1BitMsbPal(Scanline pScanline, tools::Long nX,
+                                       const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN1BitLsbPal(Scanline pScanline, tools::Long nX,
+                                       const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN4BitMsnPal(Scanline pScanline, tools::Long nX,
+                                       const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN4BitLsnPal(Scanline pScanline, tools::Long nX,
+                                       const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN8BitPal(Scanline pScanline, tools::Long nX,
+                                    const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN24BitTcBgr(Scanline pScanline, tools::Long nX,
+                                       const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN24BitTcRgb(Scanline pScanline, tools::Long nX,
+                                       const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcAbgr(Scanline pScanline, tools::Long nX,
+                                        const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcXbgr(Scanline pScanline, tools::Long nX,
+                                        const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcArgb(Scanline pScanline, tools::Long nX,
+                                        const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcXrgb(Scanline pScanline, tools::Long nX,
+                                        const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcBgra(Scanline pScanline, tools::Long nX,
+                                        const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcBgrx(Scanline pScanline, tools::Long nX,
+                                        const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcRgba(Scanline pScanline, tools::Long nX,
+                                        const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcRgbx(Scanline pScanline, tools::Long nX,
+                                        const BitmapColor& rBitmapColor, const ColorMask& rMask);
+    static void SetPixelForN32BitTcMask(Scanline pScanline, tools::Long nX,
+                                        const BitmapColor& rBitmapColor, const ColorMask& rMask);
+
+    static FncGetPixel GetPixelFunction(ScanlineFormat nFormat);
+    static FncSetPixel SetPixelFunction(ScanlineFormat nFormat);
+};
+
+#endif // INCLUDED_VCL_BITMAPREADACCESS_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */