acd40306b3
Change-Id: Ifaa37246e79678aa0c548b9ca8a9faf8036b9195 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/164804 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
129 lines
3.8 KiB
C++
129 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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*/
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#pragma once
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#include <vcl/alpha.hxx>
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#include <vcl/bitmap.hxx>
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#include <vcl/BitmapReadAccess.hxx>
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#include <optional>
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class VCL_DLLPUBLIC BitmapWriteAccess final : public BitmapReadAccess
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{
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public:
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BitmapWriteAccess(Bitmap& rBitmap);
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BitmapWriteAccess(AlphaMask& rBitmap);
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virtual ~BitmapWriteAccess() override;
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SAL_DLLPRIVATE void CopyScanline(tools::Long nY, const BitmapReadAccess& rReadAcc);
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SAL_DLLPRIVATE void CopyScanline(tools::Long nY, ConstScanline aSrcScanline,
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ScanlineFormat nSrcScanlineFormat,
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sal_uInt32 nSrcScanlineSize);
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void SetPalette(const BitmapPalette& rPalette)
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{
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assert(mpBuffer && "Access is not valid!");
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mpBuffer->maPalette = rPalette;
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}
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void SetPaletteEntryCount(sal_uInt16 nCount)
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{
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assert(mpBuffer && "Access is not valid!");
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mpBuffer->maPalette.SetEntryCount(nCount);
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}
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void SetPaletteColor(sal_uInt16 nColor, const BitmapColor& rBitmapColor)
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{
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assert(mpBuffer && "Access is not valid!");
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assert(HasPalette() && "Bitmap has no palette!");
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mpBuffer->maPalette[nColor] = rBitmapColor;
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}
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void SetPixel(tools::Long nY, tools::Long nX, const BitmapColor& rBitmapColor)
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{
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assert(mpBuffer && "Access is not valid!");
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assert(nX < mpBuffer->mnWidth && "x-coordinate out of range!");
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assert(nY < mpBuffer->mnHeight && "y-coordinate out of range!");
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mFncSetPixel(GetScanline(nY), nX, rBitmapColor, maColorMask);
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}
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void SetPixelIndex(tools::Long nY, tools::Long nX, sal_uInt8 cIndex)
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{
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SetPixel(nY, nX, BitmapColor(cIndex));
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}
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void SetLineColor(const Color& rColor);
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void SetFillColor();
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void SetFillColor(const Color& rColor);
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void Erase(const Color& rColor);
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SAL_DLLPRIVATE void DrawLine(const Point& rStart, const Point& rEnd);
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void FillRect(const tools::Rectangle& rRect);
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void DrawRect(const tools::Rectangle& rRect);
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private:
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std::optional<BitmapColor> mpLineColor;
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std::optional<BitmapColor> mpFillColor;
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BitmapWriteAccess() = delete;
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BitmapWriteAccess(const BitmapWriteAccess&) = delete;
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BitmapWriteAccess& operator=(const BitmapWriteAccess&) = delete;
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};
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class BitmapScopedWriteAccess
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{
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public:
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BitmapScopedWriteAccess(Bitmap& rBitmap)
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: moAccess(rBitmap)
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{
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}
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BitmapScopedWriteAccess(AlphaMask& rBitmap)
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: moAccess(rBitmap)
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{
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}
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BitmapScopedWriteAccess() {}
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BitmapScopedWriteAccess& operator=(Bitmap& rBitmap)
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{
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moAccess.emplace(rBitmap);
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return *this;
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}
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BitmapScopedWriteAccess& operator=(AlphaMask& rBitmap)
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{
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moAccess.emplace(rBitmap);
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return *this;
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}
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bool operator!() const { return !moAccess.has_value() || !*moAccess; }
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explicit operator bool() const { return moAccess && bool(*moAccess); }
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void reset() { moAccess.reset(); }
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BitmapWriteAccess* get() { return moAccess ? &*moAccess : nullptr; }
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const BitmapWriteAccess* get() const { return moAccess ? &*moAccess : nullptr; }
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BitmapWriteAccess* operator->() { return &*moAccess; }
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const BitmapWriteAccess* operator->() const { return &*moAccess; }
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BitmapWriteAccess& operator*() { return *moAccess; }
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const BitmapWriteAccess& operator*() const { return *moAccess; }
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private:
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std::optional<BitmapWriteAccess> moAccess;
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};
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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