265 lines
9.9 KiB
C++
265 lines
9.9 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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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <sal/config.h>
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#include <config_options.h>
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#include <cairo.h>
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#include <vcl/dllapi.h>
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#include <vcl/region.hxx>
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#include <vcl/salgtype.hxx>
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#include <vcl/vclenum.hxx>
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#include <vcl/BitmapBuffer.hxx>
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#include <com/sun/star/drawing/LineCap.hpp>
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#include <basegfx/utils/systemdependentdata.hxx>
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#include <basegfx/range/b2drange.hxx>
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#include <basegfx/polygon/b2dpolypolygon.hxx>
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#include <basegfx/polygon/b2dpolygon.hxx>
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#include <optional>
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#include <unordered_map>
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typedef struct _cairo cairo_t;
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typedef struct _cairo_surface cairo_surface_t;
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typedef struct _cairo_user_data_key cairo_user_data_key_t;
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class Gradient;
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class SalBitmap;
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struct SalGradient;
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VCL_DLLPUBLIC void dl_cairo_surface_set_device_scale(cairo_surface_t* surface, double x_scale,
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double y_scale);
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VCL_DLLPUBLIC void dl_cairo_surface_get_device_scale(cairo_surface_t* surface, double* x_scale,
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double* y_scale);
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VCL_DLLPUBLIC basegfx::B2DRange getFillDamage(cairo_t* cr);
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VCL_DLLPUBLIC basegfx::B2DRange getClipBox(cairo_t* cr);
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VCL_DLLPUBLIC basegfx::B2DRange getClippedFillDamage(cairo_t* cr);
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VCL_DLLPUBLIC basegfx::B2DRange getClippedStrokeDamage(cairo_t* cr);
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VCL_DLLPUBLIC basegfx::B2DRange getStrokeDamage(cairo_t* cr);
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class SystemDependentData_CairoPath final : public basegfx::SystemDependentData
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{
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private:
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// the path data itself
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cairo_path_t* mpCairoPath;
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// all other values the path data is based on and
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// need to be compared with to check for data validity
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bool mbNoJoin;
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bool mbAntiAlias;
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std::vector<double> maStroke;
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public:
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SystemDependentData_CairoPath(size_t nSizeMeasure, cairo_t* cr, bool bNoJoin, bool bAntiAlias,
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const std::vector<double>* pStroke); // MM01
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virtual ~SystemDependentData_CairoPath() override;
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// read access
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cairo_path_t* getCairoPath() { return mpCairoPath; }
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bool getNoJoin() const { return mbNoJoin; }
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bool getAntiAlias() const { return mbAntiAlias; }
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const std::vector<double>& getStroke() const { return maStroke; }
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virtual sal_Int64 estimateUsageInBytes() const override;
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};
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class UNLESS_MERGELIBS(VCL_DLLPUBLIC) PixelSnapper
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{
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public:
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basegfx::B2DPoint snap(const basegfx::B2DPolygon& rPolygon,
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const basegfx::B2DHomMatrix& rObjectToDevice,
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basegfx::B2DHomMatrix& rObjectToDeviceInv, sal_uInt32 nIndex);
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private:
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basegfx::B2DPoint maPrevPoint, maCurrPoint, maNextPoint;
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basegfx::B2ITuple maPrevTuple, maCurrTuple, maNextTuple;
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};
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VCL_DLLPUBLIC void add_polygon_path(cairo_t* cr, const basegfx::B2DPolyPolygon& rPolyPolygon,
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const basegfx::B2DHomMatrix& rObjectToDevice, bool bPixelSnap);
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VCL_DLLPUBLIC cairo_format_t getCairoFormat(const BitmapBuffer& rBuffer);
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VCL_DLLPUBLIC std::optional<BitmapBuffer> FastConvert24BitRgbTo32BitCairo(const BitmapBuffer* pSrc);
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enum class PaintMode
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{
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Over,
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Xor
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};
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typedef void (*damageHandler)(void* handle, sal_Int32 nExtentsX, sal_Int32 nExtentsY,
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sal_Int32 nExtentsWidth, sal_Int32 nExtentsHeight);
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struct VCL_DLLPUBLIC DamageHandler
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{
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void* handle;
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damageHandler damaged;
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};
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struct VCL_DLLPUBLIC CairoCommon
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{
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cairo_surface_t* m_pSurface;
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basegfx::B2IVector m_aFrameSize;
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vcl::Region m_aClipRegion;
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std::optional<Color> m_oLineColor;
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std::optional<Color> m_oFillColor;
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PaintMode m_ePaintMode;
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double m_fScale;
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CairoCommon()
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: m_pSurface(nullptr)
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, m_oLineColor(Color(0x00, 0x00, 0x00))
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, m_oFillColor(Color(0xFF, 0xFF, 0XFF))
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, m_ePaintMode(PaintMode::Over)
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, m_fScale(1.0)
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{
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}
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static cairo_user_data_key_t* getDamageKey();
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cairo_surface_t* getSurface() const { return m_pSurface; }
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sal_uInt16 GetBitCount() const;
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cairo_t* getCairoContext(bool bXorModeAllowed, bool bAntiAlias) const;
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void releaseCairoContext(cairo_t* cr, bool bXorModeAllowed,
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const basegfx::B2DRange& rExtents) const;
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void applyFullDamage() const;
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cairo_t* createTmpCompatibleCairoContext() const;
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static void applyColor(cairo_t* cr, Color rColor, double fTransparency = 0.0);
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void clipRegion(cairo_t* cr);
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static void clipRegion(cairo_t* cr, const vcl::Region& rClipRegion);
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void SetXORMode(bool bSet, bool bInvertOnly);
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void SetROPLineColor(SalROPColor nROPColor);
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void SetROPFillColor(SalROPColor nROPColor);
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void drawPixel(const std::optional<Color>& rLineColor, tools::Long nX, tools::Long nY,
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bool bAntiAlias);
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static Color getPixel(cairo_surface_t* pSurface, tools::Long nX, tools::Long nY);
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void drawLine(tools::Long nX1, tools::Long nY1, tools::Long nX2, tools::Long nY2,
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bool bAntiAlias);
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void drawRect(double nX, double nY, double nWidth, double nHeight, bool bAntiAlias);
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void drawPolygon(sal_uInt32 nPoints, const Point* pPtAry, bool bAntiAlias);
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void drawPolyPolygon(sal_uInt32 nPoly, const sal_uInt32* pPoints, const Point** pPtAry,
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bool bAntiAlias);
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void drawPolyPolygon(const basegfx::B2DHomMatrix& rObjectToDevice,
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const basegfx::B2DPolyPolygon&, double fTransparency, bool bAntiAlias);
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void drawPolyLine(sal_uInt32 nPoints, const Point* pPtAry, bool bAntiAlias);
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bool drawPolyLine(const basegfx::B2DHomMatrix& rObjectToDevice,
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const basegfx::B2DPolygon& rPolyLine, double fTransparency, double fLineWidth,
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const std::vector<double>* pStroke, basegfx::B2DLineJoin eLineJoin,
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css::drawing::LineCap eLineCap, double fMiterMinimumAngle,
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bool bPixelSnapHairline, bool bAntiAlias);
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bool drawAlphaRect(tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight,
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sal_uInt8 nTransparency, bool bAntiAlias);
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bool drawGradient(const tools::PolyPolygon& rPolyPolygon, const Gradient& rGradient,
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bool bAntiAlias);
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bool implDrawGradient(basegfx::B2DPolyPolygon const& rPolyPolygon, SalGradient const& rGradient,
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bool bAntiAlias);
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void copyWithOperator(const SalTwoRect& rTR, cairo_surface_t* source, cairo_operator_t eOp,
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bool bAntiAlias);
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void copySource(const SalTwoRect& rTR, cairo_surface_t* source, bool bAntiAlias);
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static basegfx::B2DRange renderSource(cairo_t* cr, const SalTwoRect& rTR,
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cairo_surface_t* source);
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void copyBitsCairo(const SalTwoRect& rTR, cairo_surface_t* pSourceSurface, bool bAntiAlias);
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void invert(const basegfx::B2DPolygon& rPoly, SalInvert nFlags, bool bAntiAlias);
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void invert(tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight,
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SalInvert nFlags, bool bAntiAlias);
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void invert(sal_uInt32 nPoints, const Point* pPtAry, SalInvert nFlags, bool bAntiAlias);
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void drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap, bool bAntiAlias);
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bool drawAlphaBitmap(const SalTwoRect& rTR, const SalBitmap& rSourceBitmap,
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const SalBitmap& rAlphaBitmap, bool bAntiAlias);
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bool drawTransformedBitmap(const basegfx::B2DPoint& rNull, const basegfx::B2DPoint& rX,
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const basegfx::B2DPoint& rY, const SalBitmap& rSourceBitmap,
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const SalBitmap* pAlphaBitmap, double fAlpha, bool bAntiAlias);
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void drawMask(const SalTwoRect& rTR, const SalBitmap& rSalBitmap, Color nMaskColor,
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bool bAntiAlias);
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std::shared_ptr<SalBitmap> getBitmap(tools::Long nX, tools::Long nY, tools::Long nWidth,
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tools::Long nHeight);
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static cairo_surface_t* createCairoSurface(const BitmapBuffer* pBuffer);
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static bool supportsOperation(OutDevSupportType eType);
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private:
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void doXorOnRelease(sal_Int32 nExtentsLeft, sal_Int32 nExtentsTop, sal_Int32 nExtentsRight,
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sal_Int32 nExtentsBottom, cairo_surface_t* const surface,
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sal_Int32 nWidth) const;
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};
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class UNLESS_MERGELIBS(VCL_DLLPUBLIC) SurfaceHelper
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{
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private:
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cairo_surface_t* pSurface;
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std::unordered_map<sal_uInt64, cairo_surface_t*> maDownscaled;
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SurfaceHelper(const SurfaceHelper&) = delete;
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SurfaceHelper& operator=(const SurfaceHelper&) = delete;
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cairo_surface_t* implCreateOrReuseDownscale(unsigned long nTargetWidth,
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unsigned long nTargetHeight);
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protected:
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cairo_surface_t* implGetSurface() const { return pSurface; }
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void implSetSurface(cairo_surface_t* pNew) { pSurface = pNew; }
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bool isTrivial() const;
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public:
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explicit SurfaceHelper();
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~SurfaceHelper();
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cairo_surface_t* getSurface(unsigned long nTargetWidth = 0,
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unsigned long nTargetHeight = 0) const;
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};
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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