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Diffstat (limited to '')
| -rw-r--r-- | vcl/inc/salbmp.hxx | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/vcl/inc/salbmp.hxx b/vcl/inc/salbmp.hxx new file mode 100644 index 000000000..f04ea291a --- /dev/null +++ b/vcl/inc/salbmp.hxx @@ -0,0 +1,134 @@ +/* -*- 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_INC_SALBMP_HXX +#define INCLUDED_VCL_INC_SALBMP_HXX + +#include <tools/gen.hxx> +#include <tools/solar.h> +#include <vcl/checksum.hxx> +#include <vcl/BitmapAccessMode.hxx> +#include <vcl/BitmapBuffer.hxx> +#include <vcl/bitmap/BitmapTypes.hxx> +#include <com/sun/star/rendering/XBitmapCanvas.hpp> + +struct BitmapBuffer; +class Color; +class SalGraphics; +class BitmapPalette; +struct BitmapSystemData; +enum class BmpScaleFlag; + +extern const sal_uLong nVCLRLut[ 6 ]; +extern const sal_uLong nVCLGLut[ 6 ]; +extern const sal_uLong nVCLBLut[ 6 ]; +extern const sal_uLong nVCLDitherLut[ 256 ]; +extern const sal_uLong nVCLLut[ 256 ]; + +class VCL_PLUGIN_PUBLIC SalBitmap +{ +public: + + SalBitmap() + : mnChecksum(0) + , mbChecksumValid(false) + { + } + + virtual ~SalBitmap(); + + virtual bool Create( const Size& rSize, + vcl::PixelFormat ePixelFormat, + const BitmapPalette& rPal ) = 0; + virtual bool Create( const SalBitmap& rSalBmp ) = 0; + virtual bool Create( const SalBitmap& rSalBmp, + SalGraphics* pGraphics ) = 0; + virtual bool Create( const SalBitmap& rSalBmp, + vcl::PixelFormat eNewPixelFormat) = 0; + virtual bool Create( const css::uno::Reference< css::rendering::XBitmapCanvas >& rBitmapCanvas, + Size& rSize, + bool bMask = false ) = 0; + virtual void Destroy() = 0; + virtual Size GetSize() const = 0; + virtual sal_uInt16 GetBitCount() const = 0; + + virtual BitmapBuffer* AcquireBuffer( BitmapAccessMode nMode ) = 0; + virtual void ReleaseBuffer( BitmapBuffer* pBuffer, BitmapAccessMode nMode ) = 0; + virtual bool GetSystemData( BitmapSystemData& rData ) = 0; + + virtual bool ScalingSupported() const = 0; + virtual bool Scale( const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag ) = 0; + void DropScaledCache(); + + virtual bool Replace( const Color& rSearchColor, const Color& rReplaceColor, sal_uInt8 nTol ) = 0; + + virtual bool ConvertToGreyscale() + { + return false; + } + virtual bool InterpretAs8Bit() + { + return false; + } + + virtual bool Erase( const Color& /*color*/ ) + { + return false; + } + // Optimized case for AlphaMask::BlendWith(). + virtual bool AlphaBlendWith( const SalBitmap& /*rSalBmp*/ ) + { + return false; + } + + BitmapChecksum GetChecksum() const + { + updateChecksum(); + if (!mbChecksumValid) + return 0; // back-compat + return mnChecksum; + } + + void InvalidateChecksum() + { + mbChecksumValid = false; + } + +protected: + BitmapChecksum mnChecksum; + bool mbChecksumValid; + +protected: + void updateChecksum() const; + // helper function to convert data in 1,2,4 bpp formats to a 8/24/32bpp format + enum class BitConvert + { + A8, + RGBA, + BGRA, + LAST = BGRA + }; + static std::unique_ptr< sal_uInt8[] > convertDataBitCount( const sal_uInt8* src, + int width, int height, int bitCount, int bytesPerRow, const BitmapPalette& palette, + BitConvert type ); +}; + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |