Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 269 insertions, 0 deletions

diff --git a/vcl/inc/headless/CairoCommon.hxx b/vcl/inc/headless/CairoCommon.hxx
new file mode 100644
index 0000000000..13e0398dd6
--- /dev/null
+++ b/vcl/inc/headless/CairoCommon.hxx
@@ -0,0 +1,269 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <sal/config.h>
+
+#include <cairo.h>
+
+#include <vcl/dllapi.h>
+#include <vcl/region.hxx>
+#include <vcl/salgtype.hxx>
+#include <vcl/vclenum.hxx>
+#include <vcl/BitmapBuffer.hxx>
+
+#include <com/sun/star/drawing/LineCap.hpp>
+
+#include <basegfx/utils/systemdependentdata.hxx>
+#include <basegfx/range/b2drange.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+
+#include <optional>
+#include <unordered_map>
+
+typedef struct _cairo cairo_t;
+typedef struct _cairo_surface cairo_surface_t;
+typedef struct _cairo_user_data_key cairo_user_data_key_t;
+
+class Gradient;
+class SalBitmap;
+struct SalGradient;
+
+VCL_DLLPUBLIC void dl_cairo_surface_set_device_scale(cairo_surface_t* surface, double x_scale,
+                                                     double y_scale);
+VCL_DLLPUBLIC void dl_cairo_surface_get_device_scale(cairo_surface_t* surface, double* x_scale,
+                                                     double* y_scale);
+
+VCL_DLLPUBLIC basegfx::B2DRange getFillDamage(cairo_t* cr);
+VCL_DLLPUBLIC basegfx::B2DRange getClipBox(cairo_t* cr);
+VCL_DLLPUBLIC basegfx::B2DRange getClippedFillDamage(cairo_t* cr);
+VCL_DLLPUBLIC basegfx::B2DRange getClippedStrokeDamage(cairo_t* cr);
+VCL_DLLPUBLIC basegfx::B2DRange getStrokeDamage(cairo_t* cr);
+
+class SystemDependentData_CairoPath final : public basegfx::SystemDependentData
+{
+private:
+    // the path data itself
+    cairo_path_t* mpCairoPath;
+
+    // all other values the path data  is based on and
+    // need to be compared with to check for data validity
+    bool mbNoJoin;
+    bool mbAntiAlias;
+    std::vector<double> maStroke;
+
+public:
+    SystemDependentData_CairoPath(size_t nSizeMeasure, cairo_t* cr, bool bNoJoin, bool bAntiAlias,
+                                  const std::vector<double>* pStroke); // MM01
+    virtual ~SystemDependentData_CairoPath() override;
+
+    // read access
+    cairo_path_t* getCairoPath() { return mpCairoPath; }
+    bool getNoJoin() const { return mbNoJoin; }
+    bool getAntiAlias() const { return mbAntiAlias; }
+    const std::vector<double>& getStroke() const { return maStroke; }
+
+    virtual sal_Int64 estimateUsageInBytes() const override;
+};
+
+VCL_DLLPUBLIC size_t AddPolygonToPath(cairo_t* cr, const basegfx::B2DPolygon& rPolygon,
+                                      const basegfx::B2DHomMatrix& rObjectToDevice, bool bPixelSnap,
+                                      bool bPixelSnapHairline);
+
+class VCL_DLLPUBLIC PixelSnapper
+{
+public:
+    basegfx::B2DPoint snap(const basegfx::B2DPolygon& rPolygon,
+                           const basegfx::B2DHomMatrix& rObjectToDevice,
+                           basegfx::B2DHomMatrix& rObjectToDeviceInv, sal_uInt32 nIndex);
+
+private:
+    basegfx::B2DPoint maPrevPoint, maCurrPoint, maNextPoint;
+    basegfx::B2ITuple maPrevTuple, maCurrTuple, maNextTuple;
+};
+
+VCL_DLLPUBLIC void add_polygon_path(cairo_t* cr, const basegfx::B2DPolyPolygon& rPolyPolygon,
+                                    const basegfx::B2DHomMatrix& rObjectToDevice, bool bPixelSnap);
+
+VCL_DLLPUBLIC cairo_format_t getCairoFormat(const BitmapBuffer& rBuffer);
+
+VCL_DLLPUBLIC std::optional<BitmapBuffer> FastConvert24BitRgbTo32BitCairo(const BitmapBuffer* pSrc);
+
+enum class PaintMode
+{
+    Over,
+    Xor
+};
+
+typedef void (*damageHandler)(void* handle, sal_Int32 nExtentsX, sal_Int32 nExtentsY,
+                              sal_Int32 nExtentsWidth, sal_Int32 nExtentsHeight);
+
+struct VCL_DLLPUBLIC DamageHandler
+{
+    void* handle;
+    damageHandler damaged;
+};
+
+struct VCL_DLLPUBLIC CairoCommon
+{
+    cairo_surface_t* m_pSurface;
+    basegfx::B2IVector m_aFrameSize;
+    vcl::Region m_aClipRegion;
+    std::optional<Color> m_oLineColor;
+    std::optional<Color> m_oFillColor;
+    PaintMode m_ePaintMode;
+    double m_fScale;
+
+    CairoCommon()
+        : m_pSurface(nullptr)
+        , m_oLineColor(Color(0x00, 0x00, 0x00))
+        , m_oFillColor(Color(0xFF, 0xFF, 0XFF))
+        , m_ePaintMode(PaintMode::Over)
+        , m_fScale(1.0)
+    {
+    }
+
+    static cairo_user_data_key_t* getDamageKey();
+
+    cairo_surface_t* getSurface() const { return m_pSurface; }
+
+    sal_uInt16 GetBitCount() const;
+
+    cairo_t* getCairoContext(bool bXorModeAllowed, bool bAntiAlias) const;
+    void releaseCairoContext(cairo_t* cr, bool bXorModeAllowed,
+                             const basegfx::B2DRange& rExtents) const;
+
+    cairo_t* createTmpCompatibleCairoContext() const;
+
+    static void applyColor(cairo_t* cr, Color rColor, double fTransparency = 0.0);
+    void clipRegion(cairo_t* cr);
+    static void clipRegion(cairo_t* cr, const vcl::Region& rClipRegion);
+
+    void SetXORMode(bool bSet, bool bInvertOnly);
+    void SetROPLineColor(SalROPColor nROPColor);
+    void SetROPFillColor(SalROPColor nROPColor);
+
+    void drawPixel(const std::optional<Color>& rLineColor, tools::Long nX, tools::Long nY,
+                   bool bAntiAlias);
+
+    static Color getPixel(cairo_surface_t* pSurface, tools::Long nX, tools::Long nY);
+
+    void drawLine(tools::Long nX1, tools::Long nY1, tools::Long nX2, tools::Long nY2,
+                  bool bAntiAlias);
+
+    void drawRect(double nX, double nY, double nWidth, double nHeight, bool bAntiAlias);
+
+    void drawPolygon(sal_uInt32 nPoints, const Point* pPtAry, bool bAntiAlias);
+
+    void drawPolyPolygon(sal_uInt32 nPoly, const sal_uInt32* pPoints, const Point** pPtAry,
+                         bool bAntiAlias);
+
+    void drawPolyPolygon(const basegfx::B2DHomMatrix& rObjectToDevice,
+                         const basegfx::B2DPolyPolygon&, double fTransparency, bool bAntiAlias);
+
+    void drawPolyLine(sal_uInt32 nPoints, const Point* pPtAry, bool bAntiAlias);
+
+    bool drawPolyLine(const basegfx::B2DHomMatrix& rObjectToDevice,
+                      const basegfx::B2DPolygon& rPolyLine, double fTransparency, double fLineWidth,
+                      const std::vector<double>* pStroke, basegfx::B2DLineJoin eLineJoin,
+                      css::drawing::LineCap eLineCap, double fMiterMinimumAngle,
+                      bool bPixelSnapHairline, bool bAntiAlias);
+
+    bool drawAlphaRect(tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight,
+                       sal_uInt8 nTransparency, bool bAntiAlias);
+
+    bool drawGradient(const tools::PolyPolygon& rPolyPolygon, const Gradient& rGradient,
+                      bool bAntiAlias);
+
+    bool implDrawGradient(basegfx::B2DPolyPolygon const& rPolyPolygon, SalGradient const& rGradient,
+                          bool bAntiAlias);
+
+    void copyWithOperator(const SalTwoRect& rTR, cairo_surface_t* source, cairo_operator_t eOp,
+                          bool bAntiAlias);
+
+    void copySource(const SalTwoRect& rTR, cairo_surface_t* source, bool bAntiAlias);
+
+    static basegfx::B2DRange renderSource(cairo_t* cr, const SalTwoRect& rTR,
+                                          cairo_surface_t* source);
+
+    void copyBitsCairo(const SalTwoRect& rTR, cairo_surface_t* pSourceSurface, bool bAntiAlias);
+
+    void invert(const basegfx::B2DPolygon& rPoly, SalInvert nFlags, bool bAntiAlias);
+
+    void invert(tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight,
+                SalInvert nFlags, bool bAntiAlias);
+
+    void invert(sal_uInt32 nPoints, const Point* pPtAry, SalInvert nFlags, bool bAntiAlias);
+
+    void drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap, bool bAntiAlias);
+
+    bool drawAlphaBitmap(const SalTwoRect& rTR, const SalBitmap& rSourceBitmap,
+                         const SalBitmap& rAlphaBitmap, bool bAntiAlias);
+
+    bool drawTransformedBitmap(const basegfx::B2DPoint& rNull, const basegfx::B2DPoint& rX,
+                               const basegfx::B2DPoint& rY, const SalBitmap& rSourceBitmap,
+                               const SalBitmap* pAlphaBitmap, double fAlpha, bool bAntiAlias);
+
+    void drawMask(const SalTwoRect& rTR, const SalBitmap& rSalBitmap, Color nMaskColor,
+                  bool bAntiAlias);
+
+    std::shared_ptr<SalBitmap> getBitmap(tools::Long nX, tools::Long nY, tools::Long nWidth,
+                                         tools::Long nHeight);
+
+    static cairo_surface_t* createCairoSurface(const BitmapBuffer* pBuffer);
+
+    static bool supportsOperation(OutDevSupportType eType);
+    static bool hasFastDrawTransformedBitmap();
+
+private:
+    void doXorOnRelease(sal_Int32 nExtentsLeft, sal_Int32 nExtentsTop, sal_Int32 nExtentsRight,
+                        sal_Int32 nExtentsBottom, cairo_surface_t* const surface,
+                        sal_Int32 nWidth) const;
+};
+
+class VCL_DLLPUBLIC SurfaceHelper
+{
+private:
+    cairo_surface_t* pSurface;
+    std::unordered_map<sal_uInt64, cairo_surface_t*> maDownscaled;
+
+    SurfaceHelper(const SurfaceHelper&) = delete;
+    SurfaceHelper& operator=(const SurfaceHelper&) = delete;
+
+    cairo_surface_t* implCreateOrReuseDownscale(unsigned long nTargetWidth,
+                                                unsigned long nTargetHeight);
+
+protected:
+    cairo_surface_t* implGetSurface() const { return pSurface; }
+    void implSetSurface(cairo_surface_t* pNew) { pSurface = pNew; }
+
+    bool isTrivial() const;
+
+public:
+    explicit SurfaceHelper();
+    ~SurfaceHelper();
+
+    cairo_surface_t* getSurface(unsigned long nTargetWidth = 0,
+                                unsigned long nTargetHeight = 0) const;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */