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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 <vcl/alpha.hxx>
#include <vcl/bitmap.hxx>
#include <vcl/BitmapReadAccess.hxx>
#include <optional>
class VCL_DLLPUBLIC BitmapWriteAccess final : public BitmapReadAccess
{
public:
BitmapWriteAccess(Bitmap& rBitmap);
BitmapWriteAccess(AlphaMask& rBitmap);
virtual ~BitmapWriteAccess() override;
void CopyScanline(tools::Long nY, const BitmapReadAccess& rReadAcc);
void CopyScanline(tools::Long nY, ConstScanline aSrcScanline, ScanlineFormat nSrcScanlineFormat,
sal_uInt32 nSrcScanlineSize);
void SetPalette(const BitmapPalette& rPalette)
{
assert(mpBuffer && "Access is not valid!");
mpBuffer->maPalette = rPalette;
}
void SetPaletteEntryCount(sal_uInt16 nCount)
{
assert(mpBuffer && "Access is not valid!");
mpBuffer->maPalette.SetEntryCount(nCount);
}
void SetPaletteColor(sal_uInt16 nColor, const BitmapColor& rBitmapColor)
{
assert(mpBuffer && "Access is not valid!");
assert(HasPalette() && "Bitmap has no palette!");
mpBuffer->maPalette[nColor] = rBitmapColor;
}
void SetPixel(tools::Long nY, tools::Long nX, const BitmapColor& rBitmapColor)
{
assert(mpBuffer && "Access is not valid!");
assert(nX < mpBuffer->mnWidth && "x-coordinate out of range!");
assert(nY < mpBuffer->mnHeight && "y-coordinate out of range!");
mFncSetPixel(GetScanline(nY), nX, rBitmapColor, maColorMask);
}
void SetPixelIndex(tools::Long nY, tools::Long nX, sal_uInt8 cIndex)
{
SetPixel(nY, nX, BitmapColor(cIndex));
}
void SetLineColor(const Color& rColor);
void SetFillColor();
void SetFillColor(const Color& rColor);
void Erase(const Color& rColor);
void DrawLine(const Point& rStart, const Point& rEnd);
void FillRect(const tools::Rectangle& rRect);
void DrawRect(const tools::Rectangle& rRect);
private:
std::optional<BitmapColor> mpLineColor;
std::optional<BitmapColor> mpFillColor;
BitmapWriteAccess() = delete;
BitmapWriteAccess(const BitmapWriteAccess&) = delete;
BitmapWriteAccess& operator=(const BitmapWriteAccess&) = delete;
};
class BitmapScopedWriteAccess
{
public:
BitmapScopedWriteAccess(Bitmap& rBitmap)
: moAccess(rBitmap)
{
}
BitmapScopedWriteAccess(AlphaMask& rBitmap)
: moAccess(rBitmap)
{
}
BitmapScopedWriteAccess() {}
BitmapScopedWriteAccess& operator=(Bitmap& rBitmap)
{
moAccess.emplace(rBitmap);
return *this;
}
BitmapScopedWriteAccess& operator=(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(); }
BitmapWriteAccess* get() { return moAccess ? &*moAccess : nullptr; }
const BitmapWriteAccess* get() const { return moAccess ? &*moAccess : nullptr; }
BitmapWriteAccess* operator->() { return &*moAccess; }
const BitmapWriteAccess* operator->() const { return &*moAccess; }
BitmapWriteAccess& operator*() { return *moAccess; }
const BitmapWriteAccess& operator*() const { return *moAccess; }
private:
std::optional<BitmapWriteAccess> moAccess;
};
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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