office-gobmx/include/vcl/gdimtf.hxx
Armin Le Grand (Allotropia) 4d535c4f86 tdf#126319 Corrected bitmap creation from metafile
The conversion from Metafile to Bitmap in GraphicExporter
is based on metafiles which does just not deliver enough
precision when getting the bounds to do the correct size
calculation for the target Bitmap.
So I changed that to use Primitive functionality what
produces better data. That old fix/correction itself was
based on hairlines only which is anyways no longer
sufficient since LO uses less hairlines nowadays, what
is good in general (They are a relic of non-AA times
when it was not possible to paint/work with lines taller
than one pixel).
Thus, cases need to be solved more generic based on
better data. It would also be good to change this
to primitives completely, but that is too much for now.

Change-Id: I71bd136b106ef8ff3ba51458c46df08269773c01
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/129235
Tested-by: Jenkins
Reviewed-by: Armin Le Grand <Armin.Le.Grand@me.com>
2022-02-02 09:43:10 +01:00

195 lines
8.3 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 .
*/
#ifndef INCLUDED_VCL_GDIMTF_HXX
#define INCLUDED_VCL_GDIMTF_HXX
#include <vcl/dllapi.h>
#include <tools/gen.hxx>
#include <tools/solar.h>
#include <vcl/mapmod.hxx>
#include <vcl/bitmap.hxx>
#include <vcl/vclptr.hxx>
#include <vector>
class OutputDevice;
class MetaAction;
class SvStream;
class Color;
class BitmapEx;
namespace tools {
class Polygon;
class PolyPolygon;
}
class Gradient;
struct ImplMetaReadData;
#define GDI_METAFILE_END (size_t(0xFFFFFFFF))
enum class MtfConversion
{
N1BitThreshold,
N8BitGreys
};
typedef Color (*ColorExchangeFnc)( const Color& rColor, const void* pColParam );
typedef BitmapEx (*BmpExchangeFnc)( const BitmapEx& rBmpEx, const void* pBmpParam );
class VCL_DLLPUBLIC GDIMetaFile final
{
private:
::std::vector< rtl::Reference<MetaAction> > m_aList;
size_t m_nCurrentActionElement;
MapMode m_aPrefMapMode;
Size m_aPrefSize;
GDIMetaFile* m_pPrev;
GDIMetaFile* m_pNext;
VclPtr<OutputDevice> m_pOutDev;
bool m_bPause;
bool m_bRecord;
bool m_bUseCanvas;
SAL_DLLPRIVATE static Color ImplColAdjustFnc( const Color& rColor, const void* pColParam );
SAL_DLLPRIVATE static BitmapEx ImplBmpAdjustFnc( const BitmapEx& rBmpEx, const void* pBmpParam );
SAL_DLLPRIVATE static Color ImplColConvertFnc( const Color& rColor, const void* pColParam );
SAL_DLLPRIVATE static BitmapEx ImplBmpConvertFnc( const BitmapEx& rBmpEx, const void* pBmpParam );
SAL_DLLPRIVATE static Color ImplColMonoFnc( const Color& rColor, const void* pColParam );
SAL_DLLPRIVATE static BitmapEx ImplBmpMonoFnc( const BitmapEx& rBmpEx, const void* pBmpParam );
SAL_DLLPRIVATE static Color ImplColReplaceFnc( const Color& rColor, const void* pColParam );
SAL_DLLPRIVATE static BitmapEx ImplBmpReplaceFnc( const BitmapEx& rBmpEx, const void* pBmpParam );
SAL_DLLPRIVATE void ImplExchangeColors( ColorExchangeFnc pFncCol, const void* pColParam,
BmpExchangeFnc pFncBmp, const void* pBmpParam );
SAL_DLLPRIVATE static Point ImplGetRotatedPoint( const Point& rPt, const Point& rRotatePt,
const Size& rOffset, double fSin, double fCos );
SAL_DLLPRIVATE static tools::Polygon ImplGetRotatedPolygon( const tools::Polygon& rPoly, const Point& rRotatePt,
const Size& rOffset, double fSin, double fCos );
SAL_DLLPRIVATE static tools::PolyPolygon ImplGetRotatedPolyPolygon( const tools::PolyPolygon& rPoly, const Point& rRotatePt,
const Size& rOffset, double fSin, double fCos );
SAL_DLLPRIVATE static void ImplAddGradientEx( GDIMetaFile& rMtf,
const OutputDevice& rMapDev,
const tools::PolyPolygon& rPolyPoly,
const Gradient& rGrad );
SAL_DLLPRIVATE bool ImplPlayWithRenderer(OutputDevice& rOut, const Point& rPos, Size rLogicDestSize);
void Linker( OutputDevice* pOut, bool bLink );
public:
GDIMetaFile();
GDIMetaFile( const GDIMetaFile& rMtf );
~GDIMetaFile();
GDIMetaFile& operator=( const GDIMetaFile& rMtf );
bool operator==( const GDIMetaFile& rMtf ) const;
bool operator!=( const GDIMetaFile& rMtf ) const { return !( *this == rMtf ); }
void Clear();
void Mirror( BmpMirrorFlags nMirrorFlags );
void Move( tools::Long nX, tools::Long nY );
// additional Move method getting specifics how to handle MapMode( MapUnit::MapPixel )
void Move( tools::Long nX, tools::Long nY, tools::Long nDPIX, tools::Long nDPIY );
void Scale( double fScaleX, double fScaleY );
void Scale( const Fraction& rScaleX, const Fraction& rScaleY );
void Rotate( Degree10 nAngle10 );
void Clip( const tools::Rectangle& );
bool HasTransparentActions() const;
/* get the bound rect of the contained actions
* caveats:
* - clip actions will limit the contained actions,
* but the current clipregion of the passed OutputDevice will not
* - coordinates of actions will be transformed to preferred mapmode
* - the returned rectangle is relative to the preferred mapmode of the metafile
*/
tools::Rectangle GetBoundRect( OutputDevice& i_rReference ) const;
void Adjust( short nLuminancePercent, short nContrastPercent,
short nChannelRPercent = 0, short nChannelGPercent = 0,
short nChannelBPercent = 0, double fGamma = 1.0,
bool bInvert = false, bool msoBrightness = false );
void Convert( MtfConversion eConversion );
void ReplaceColors( const Color* pSearchColors, const Color* rReplaceColors,
sal_uLong nColorCount );
GDIMetaFile GetMonochromeMtf( const Color& rCol ) const;
void Record( OutputDevice* pOutDev );
bool IsRecord() const { return m_bRecord; }
void Play(GDIMetaFile& rMtf);
void Play(OutputDevice& rOutDev, size_t nPos = GDI_METAFILE_END);
void Play(OutputDevice& rOutDev, const Point& rPos, const Size& rSize);
void Pause( bool bPause );
bool IsPause() const { return m_bPause; }
void Stop();
void WindStart();
void WindPrev();
size_t GetActionSize() const;
void AddAction(const rtl::Reference<MetaAction>& pAction);
void AddAction(const rtl::Reference<MetaAction>& pAction, size_t nPos);
void push_back(const rtl::Reference<MetaAction>& pAction);
/**
* @param pAction takes ownership
* @param nAction the action to replace
*/
void ReplaceAction( rtl::Reference<MetaAction> pAction, size_t nAction );
MetaAction* FirstAction();
MetaAction* NextAction();
MetaAction* GetAction( size_t nAction ) const;
MetaAction* GetCurAction() const { return GetAction( m_nCurrentActionElement ); }
const Size& GetPrefSize() const { return m_aPrefSize; }
void SetPrefSize( const Size& rSize ) { m_aPrefSize = rSize; }
const MapMode& GetPrefMapMode() const { return m_aPrefMapMode; }
void SetPrefMapMode( const MapMode& rMapMode ) { m_aPrefMapMode = rMapMode; }
sal_uLong GetSizeBytes() const;
/// Creates an antialiased thumbnail
bool CreateThumbnail(BitmapEx& rBitmapEx,
BmpConversion nColorConversion = BmpConversion::N24Bit,
BmpScaleFlag nScaleFlag = BmpScaleFlag::BestQuality) const;
void UseCanvas( bool _bUseCanvas );
bool GetUseCanvas() const { return m_bUseCanvas; }
/// Dumps the meta actions as XML in metafile.xml.
void dumpAsXml(const char* pFileName = nullptr) const;
};
#endif // INCLUDED_VCL_GDIMTF_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */