office-gobmx/vcl/inc/salgdiimpl.hxx
Luboš Luňák 37f472c8d0 fix line width in DrawPolyLine() with matrix (tdf#132498)
For backends that do the object-to-device coordinates transformation
directly, it's necessary to also convert the size of line width.
But simply multiplying it with the matrix can also rotate the line
width "vector", making it e.g. negative. So don't use just the X
coordinate, use vector length for the transformation, which is ok.
In fact it doesn't even make sense to treat width as a vector, because
a width simply is not a vector (and for this reason it's also not
actually used).

Change-Id: I1241c9cb29155df105170d568a879ebc32b11a5f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/93203
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Jenkins
2020-05-05 20:36:12 +02:00

211 lines
7 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_INC_SALGDIIMPL_HXX
#define INCLUDED_VCL_INC_SALGDIIMPL_HXX
#include <vcl/dllapi.h>
#include <tools/color.hxx>
#include <tools/poly.hxx>
#include <vcl/salgtype.hxx>
#include <vcl/region.hxx>
#include <vcl/vclenum.hxx>
#include <com/sun/star/drawing/LineCap.hpp>
class SalGraphics;
class SalBitmap;
class SalFrame;
class Gradient;
class OpenGLContext;
class SalVirtualDevice;
class VCL_PLUGIN_PUBLIC SalGraphicsImpl
{
public:
virtual ~SalGraphicsImpl();
virtual void Init() = 0;
virtual void DeInit() {}
virtual void freeResources() = 0;
virtual OUString getRenderBackendName() const = 0;
virtual bool setClipRegion( const vcl::Region& ) = 0;
//
// get the depth of the device
virtual sal_uInt16 GetBitCount() const = 0;
// get the width of the device
virtual long GetGraphicsWidth() const = 0;
// set the clip region to empty
virtual void ResetClipRegion() = 0;
// set the line color to transparent (= don't draw lines)
virtual void SetLineColor() = 0;
// set the line color to a specific color
virtual void SetLineColor( Color nColor ) = 0;
// set the fill color to transparent (= don't fill)
virtual void SetFillColor() = 0;
// set the fill color to a specific color, shapes will be
// filled accordingly
virtual void SetFillColor( Color nColor ) = 0;
// enable/disable XOR drawing
virtual void SetXORMode( bool bSet, bool bInvertOnly ) = 0;
// set line color for raster operations
virtual void SetROPLineColor( SalROPColor nROPColor ) = 0;
// set fill color for raster operations
virtual void SetROPFillColor( SalROPColor nROPColor ) = 0;
// draw --> LineColor and FillColor and RasterOp and ClipRegion
virtual void drawPixel( long nX, long nY ) = 0;
virtual void drawPixel( long nX, long nY, Color nColor ) = 0;
virtual void drawLine( long nX1, long nY1, long nX2, long nY2 ) = 0;
virtual void drawRect( long nX, long nY, long nWidth, long nHeight ) = 0;
virtual void drawPolyLine( sal_uInt32 nPoints, const SalPoint* pPtAry ) = 0;
virtual void drawPolygon( sal_uInt32 nPoints, const SalPoint* pPtAry ) = 0;
virtual void drawPolyPolygon( sal_uInt32 nPoly, const sal_uInt32* pPoints, PCONSTSALPOINT* pPtAry ) = 0;
virtual bool drawPolyPolygon(
const basegfx::B2DHomMatrix& rObjectToDevice,
const basegfx::B2DPolyPolygon&,
double fTransparency) = 0;
virtual bool drawPolyLine(
const basegfx::B2DHomMatrix& rObjectToDevice,
const basegfx::B2DPolygon&,
double fTransparency,
double fLineWidth,
const std::vector< double >* pStroke, // MM01
basegfx::B2DLineJoin,
css::drawing::LineCap,
double fMiterMinimumAngle,
bool bPixelSnapHairline) = 0;
virtual bool drawPolyLineBezier(
sal_uInt32 nPoints,
const SalPoint* pPtAry,
const PolyFlags* pFlgAry ) = 0;
virtual bool drawPolygonBezier(
sal_uInt32 nPoints,
const SalPoint* pPtAry,
const PolyFlags* pFlgAry ) = 0;
virtual bool drawPolyPolygonBezier(
sal_uInt32 nPoly,
const sal_uInt32* pPoints,
const SalPoint* const* pPtAry,
const PolyFlags* const* pFlgAry ) = 0;
// CopyArea --> No RasterOp, but ClipRegion
virtual void copyArea(
long nDestX, long nDestY,
long nSrcX, long nSrcY,
long nSrcWidth, long nSrcHeight,
bool bWindowInvalidate ) = 0;
// CopyBits and DrawBitmap --> RasterOp and ClipRegion
// CopyBits() --> pSrcGraphics == NULL, then CopyBits on same Graphics
virtual void copyBits( const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics ) = 0;
virtual void drawBitmap( const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap ) = 0;
virtual void drawBitmap(
const SalTwoRect& rPosAry,
const SalBitmap& rSalBitmap,
const SalBitmap& rMaskBitmap ) = 0;
virtual void drawMask(
const SalTwoRect& rPosAry,
const SalBitmap& rSalBitmap,
Color nMaskColor ) = 0;
virtual std::shared_ptr<SalBitmap> getBitmap( long nX, long nY, long nWidth, long nHeight ) = 0;
virtual Color getPixel( long nX, long nY ) = 0;
// invert --> ClipRegion (only Windows or VirDevs)
virtual void invert(
long nX, long nY,
long nWidth, long nHeight,
SalInvert nFlags) = 0;
virtual void invert( sal_uInt32 nPoints, const SalPoint* pPtAry, SalInvert nFlags ) = 0;
virtual bool drawEPS(
long nX, long nY,
long nWidth, long nHeight,
void* pPtr,
sal_uInt32 nSize ) = 0;
virtual bool blendBitmap(
const SalTwoRect&,
const SalBitmap& rBitmap ) = 0;
virtual bool blendAlphaBitmap(
const SalTwoRect&,
const SalBitmap& rSrcBitmap,
const SalBitmap& rMaskBitmap,
const SalBitmap& rAlphaBitmap ) = 0;
virtual bool drawAlphaBitmap(
const SalTwoRect&,
const SalBitmap& rSourceBitmap,
const SalBitmap& rAlphaBitmap ) = 0;
/** draw transformed bitmap (maybe with alpha) where Null, X, Y define the coordinate system */
virtual bool drawTransformedBitmap(
const basegfx::B2DPoint& rNull,
const basegfx::B2DPoint& rX,
const basegfx::B2DPoint& rY,
const SalBitmap& rSourceBitmap,
const SalBitmap* pAlphaBitmap) = 0;
virtual bool drawAlphaRect(
long nX, long nY,
long nWidth, long nHeight,
sal_uInt8 nTransparency ) = 0;
virtual bool drawGradient(const tools::PolyPolygon& rPolygon, const Gradient& rGradient) = 0;
virtual bool supportsOperation(OutDevSupportType eType) const = 0;
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */