6588c30ed4
ScanlineFormat enum is used to indicate 2 things - scanline format type and scanline direction (TopDown or BottomUp). This makes it complex to manipulate with (using bit arithmetics) and hard to use in general for no benefit, so this commit separates direction out from the ScanlineFormat into ScanlineDirection enum. ScanlineFormat is now just a simple enum class (not a bit field). Change-Id: Iad55d0a4c8c07b71221c2facf7cf6a2d518fec0c Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163943 Tested-by: Jenkins Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
235 lines
10 KiB
C++
235 lines
10 KiB
C++
/* -*- 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 .
|
|
*/
|
|
#pragma once
|
|
|
|
#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 SAL_DLLPUBLIC_RTTI BitmapReadAccess : public BitmapInfoAccess
|
|
{
|
|
friend class BitmapWriteAccess;
|
|
|
|
public:
|
|
VCL_DLLPUBLIC BitmapReadAccess(const Bitmap& rBitmap,
|
|
BitmapAccessMode nMode = BitmapAccessMode::Read);
|
|
VCL_DLLPUBLIC BitmapReadAccess(const AlphaMask& rBitmap,
|
|
BitmapAccessMode nMode = BitmapAccessMode::Read);
|
|
VCL_DLLPUBLIC 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->meDirection == ScanlineDirection::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!");
|
|
|
|
return GetPixelFromData(GetScanline(nY), nX);
|
|
}
|
|
|
|
BitmapColor GetPixel(const Point& point) const { return GetPixel(point.Y(), point.X()); }
|
|
|
|
BitmapColor GetColorFromData(sal_uInt8* pData, tools::Long nX) const
|
|
{
|
|
if (HasPalette())
|
|
return GetPaletteColor(GetIndexFromData(pData, nX));
|
|
else
|
|
return GetPixelFromData(pData, nX);
|
|
}
|
|
|
|
BitmapColor GetColor(tools::Long nY, tools::Long nX) const
|
|
{
|
|
assert(mpBuffer && "Access is not valid!");
|
|
assert(nX < mpBuffer->mnWidth && "x-coordinate out of range!");
|
|
return GetColorFromData(GetScanline(nY), nX);
|
|
}
|
|
|
|
BitmapColor GetColor(const Point& point) const { return GetColor(point.Y(), point.X()); }
|
|
|
|
sal_uInt8 GetPixelIndex(tools::Long nY, tools::Long nX) const
|
|
{
|
|
return GetPixel(nY, nX).GetIndex();
|
|
}
|
|
|
|
sal_uInt8 GetPixelIndex(const Point& point) const
|
|
{
|
|
return GetPixelIndex(point.Y(), point.X());
|
|
}
|
|
|
|
/** 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:
|
|
BitmapBuffer* ImplGetBitmapBuffer() const { return mpBuffer; }
|
|
|
|
static BitmapColor GetPixelForN1BitMsbPal(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 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);
|
|
};
|
|
|
|
class BitmapScopedReadAccess
|
|
{
|
|
public:
|
|
BitmapScopedReadAccess(const Bitmap& rBitmap)
|
|
: moAccess(rBitmap)
|
|
{
|
|
}
|
|
BitmapScopedReadAccess(const AlphaMask& rBitmap)
|
|
: moAccess(rBitmap)
|
|
{
|
|
}
|
|
BitmapScopedReadAccess() {}
|
|
|
|
BitmapScopedReadAccess& operator=(const Bitmap& rBitmap)
|
|
{
|
|
moAccess.emplace(rBitmap);
|
|
return *this;
|
|
}
|
|
|
|
BitmapScopedReadAccess& operator=(const AlphaMask& rBitmap)
|
|
{
|
|
moAccess.emplace(rBitmap);
|
|
return *this;
|
|
}
|
|
|
|
bool operator!() const { return !moAccess.has_value() || !*moAccess; }
|
|
explicit operator bool() const { return moAccess && bool(*moAccess); }
|
|
|
|
void reset() { moAccess.reset(); }
|
|
|
|
BitmapReadAccess* get() { return moAccess ? &*moAccess : nullptr; }
|
|
const BitmapReadAccess* get() const { return moAccess ? &*moAccess : nullptr; }
|
|
|
|
BitmapReadAccess* operator->() { return &*moAccess; }
|
|
const BitmapReadAccess* operator->() const { return &*moAccess; }
|
|
|
|
BitmapReadAccess& operator*() { return *moAccess; }
|
|
const BitmapReadAccess& operator*() const { return *moAccess; }
|
|
|
|
private:
|
|
std::optional<BitmapReadAccess> moAccess;
|
|
};
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|