Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

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

1 files changed, 638 insertions, 0 deletions

diff --git a/vcl/inc/salgdi.hxx b/vcl/inc/salgdi.hxx
new file mode 100644
index 000000000..8d8e4c96d
--- /dev/null
+++ b/vcl/inc/salgdi.hxx
@@ -0,0 +1,638 @@
+/* -*- 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_SALGDI_HXX
+#define INCLUDED_VCL_INC_SALGDI_HXX
+
+#include <vcl/outdev.hxx>
+
+#include "impfontmetricdata.hxx"
+#include "salgdiimpl.hxx"
+#include "sallayout.hxx"
+#include "SalGradient.hxx"
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include "WidgetDrawInterface.hxx"
+
+#include <config_cairo_canvas.h>
+
+#include <map>
+#include <vector>
+
+class PhysicalFontCollection;
+class SalBitmap;
+class FontSelectPattern;
+class FontAttributes;
+class PhysicalFontFace;
+class SalLayout;
+class ImplLayoutArgs;
+namespace tools { class Rectangle; }
+class FontSubsetInfo;
+class OpenGLContext;
+class OutputDevice;
+class FreetypeFont;
+struct SystemGraphicsData;
+
+#if ENABLE_CAIRO_CANVAS
+struct SystemFontData;
+#endif // ENABLE_CAIRO_CANVAS
+
+namespace basegfx {
+    class B2DVector;
+    class B2DPolygon;
+    class B2DPolyPolygon;
+}
+
+typedef sal_Unicode sal_Ucs; // TODO: use sal_UCS4 instead of sal_Unicode
+typedef std::map< sal_Ucs, sal_uInt32 >   Ucs2UIntMap;
+
+// note: if you add any new methods to class SalGraphics using coordinates
+//       make sure they have a corresponding protected pure virtual method
+//       which has to be implemented by the platform dependent part.
+//       Add a method that performs coordinate mirroring if required, (see
+//       existing methods as sample) and then calls the equivalent pure method.
+
+// note: all positions are in pixel and relative to
+// the top/left-position of the virtual output area
+
+class VCL_PLUGIN_PUBLIC SalGraphics : protected vcl::WidgetDrawInterface
+{
+public:
+    SalGraphics();
+    ~SalGraphics() COVERITY_NOEXCEPT_FALSE override;
+
+    virtual SalGraphicsImpl*    GetImpl() const = 0;
+
+    /// Check that our mpImpl is OpenGL and return the context, otherwise NULL.
+    rtl::Reference<OpenGLContext> GetOpenGLContext() const;
+
+    void                        setAntiAliasB2DDraw(bool bNew) { m_bAntiAliasB2DDraw = bNew; }
+    bool                        getAntiAliasB2DDraw() const { return m_bAntiAliasB2DDraw; }
+
+    // public SalGraphics methods, the interface to the independent vcl part
+
+    // get device resolution
+    virtual void                GetResolution( sal_Int32& rDPIX, sal_Int32& rDPIY ) = 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;
+
+    // set the text color to a specific color
+    virtual void                SetTextColor( Color nColor ) = 0;
+
+    // set the font
+    virtual void                SetFont(LogicalFontInstance*, int nFallbackLevel) = 0;
+
+    // release the fonts
+    void                        ReleaseFonts() { SetFont( nullptr, 0 ); }
+
+    // get the current font's metrics
+    virtual void                GetFontMetric( ImplFontMetricDataRef&, int nFallbackLevel ) = 0;
+
+    // get the repertoire of the current font
+    virtual FontCharMapRef      GetFontCharMap() const = 0;
+
+    // get the layout capabilities of the current font
+    virtual bool                GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const = 0;
+
+    // graphics must fill supplied font list
+    virtual void                GetDevFontList( PhysicalFontCollection* ) = 0;
+
+    // graphics must drop any cached font info
+    virtual void                ClearDevFontCache() = 0;
+
+    virtual bool                AddTempDevFont(
+                                    PhysicalFontCollection*,
+                                    const OUString& rFileURL,
+                                    const OUString& rFontName ) = 0;
+
+    // CreateFontSubset: a method to get a subset of glyhps of a font
+    // inside a new valid font file
+    // returns true if creation of subset was successful
+    // parameters: rToFile: contains an osl file URL to write the subset to
+    //             pFont: describes from which font to create a subset
+    //             pGlyphIDs: the glyph ids to be extracted
+    //             pEncoding: the character code corresponding to each glyph
+    //             pWidths: the advance widths of the corresponding glyphs (in PS font units)
+    //             nGlyphs: the number of glyphs
+    //             rInfo: additional outgoing information
+    // implementation note: encoding 0 with glyph id 0 should be added implicitly
+    // as "undefined character"
+    virtual bool                CreateFontSubset(
+                                    const OUString& rToFile,
+                                    const PhysicalFontFace* pFont,
+                                    const sal_GlyphId* pGlyphIDs,
+                                    const sal_uInt8* pEncoding,
+                                    sal_Int32* pWidths,
+                                    int nGlyphs,
+                                    FontSubsetInfo& rInfo ) = 0;
+
+    // GetEmbedFontData: gets the font data for a font marked
+    // embeddable by GetDevFontList or NULL in case of error
+    // parameters: pFont: describes the font in question
+    //             pDataLen: out parameter, contains the byte length of the returned buffer
+    virtual const void*         GetEmbedFontData(const PhysicalFontFace* pFont, long* pDataLen) = 0;
+
+    // free the font data again
+    virtual void                FreeEmbedFontData( const void* pData, long nDataLen ) = 0;
+
+    // get the same widths as in CreateFontSubset
+    // in case of an embeddable font also fill the mapping
+    // between unicode and glyph id
+    // leave widths vector and mapping untouched in case of failure
+    virtual void                GetGlyphWidths(
+                                    const PhysicalFontFace* pFont,
+                                    bool bVertical,
+                                    std::vector< sal_Int32 >& rWidths,
+                                    Ucs2UIntMap& rUnicodeEnc ) = 0;
+
+    virtual std::unique_ptr<GenericSalLayout>
+                                GetTextLayout(int nFallbackLevel) = 0;
+    virtual void                DrawTextLayout( const GenericSalLayout& ) = 0;
+
+    virtual bool                supportsOperation( OutDevSupportType ) const = 0;
+
+    // mirroring specifics
+    SalLayoutFlags              GetLayout() const { return m_nLayout; }
+    void                        SetLayout( SalLayoutFlags aLayout ) { m_nLayout = aLayout;}
+
+    void                        mirror( long& nX, const OutputDevice *pOutDev ) const;
+    // only called mirror2 to avoid ambiguity
+    [[nodiscard]]
+    long                        mirror2( long nX, const OutputDevice *pOutDev ) const;
+    void                        mirror( long& nX, long nWidth, const OutputDevice *pOutDev, bool bBack = false ) const;
+    bool                        mirror( sal_uInt32 nPoints, const SalPoint *pPtAry, SalPoint *pPtAry2, const OutputDevice *pOutDev ) const;
+    void                        mirror( tools::Rectangle& rRect, const OutputDevice*, bool bBack = false ) const;
+    void                        mirror( vcl::Region& rRgn, const OutputDevice *pOutDev ) const;
+    void                        mirror( ImplControlValue&, const OutputDevice* ) const;
+    basegfx::B2DPolyPolygon     mirror( const basegfx::B2DPolyPolygon& i_rPoly, const OutputDevice *pOutDev ) const;
+    const basegfx::B2DHomMatrix& getMirror( const OutputDevice *pOutDev ) const;
+
+    // non virtual methods; these do possible coordinate mirroring and
+    // then delegate to protected virtual methods
+    bool                        SetClipRegion( const vcl::Region&, const OutputDevice *pOutDev );
+
+    // draw --> LineColor and FillColor and RasterOp and ClipRegion
+    void                        DrawPixel( long nX, long nY, const OutputDevice *pOutDev );
+    void                        DrawPixel( long nX, long nY, Color nColor, const OutputDevice *pOutDev );
+
+    void                        DrawLine( long nX1, long nY1, long nX2, long nY2, const OutputDevice *pOutDev );
+
+    void                        DrawRect( long nX, long nY, long nWidth, long nHeight, const OutputDevice *pOutDev );
+
+    void                        DrawPolyLine( sal_uInt32 nPoints, SalPoint const * pPtAry, const OutputDevice *pOutDev );
+
+    void                        DrawPolygon( sal_uInt32 nPoints, const SalPoint* pPtAry, const OutputDevice *pOutDev );
+
+    void                        DrawPolyPolygon(
+                                    sal_uInt32 nPoly,
+                                    const sal_uInt32* pPoints,
+                                    PCONSTSALPOINT* pPtAry,
+                                    const OutputDevice *pOutDev );
+
+    bool                        DrawPolyPolygon(
+                                    const basegfx::B2DHomMatrix& rObjectToDevice,
+                                    const basegfx::B2DPolyPolygon &i_rPolyPolygon,
+                                    double i_fTransparency,
+                                    const OutputDevice *i_pOutDev);
+
+    bool                        DrawPolyLine(
+                                    const basegfx::B2DHomMatrix& rObjectToDevice,
+                                    const basegfx::B2DPolygon& i_rPolygon,
+                                    double i_fTransparency,
+                                    double i_fLineWidth,
+                                    const std::vector< double >* i_pStroke, // MM01
+                                    basegfx::B2DLineJoin i_eLineJoin,
+                                    css::drawing::LineCap i_eLineCap,
+                                    double i_fMiterMinimumAngle,
+                                    bool bPixelSnapHairline,
+                                    const OutputDevice* i_pOutDev);
+
+    bool                        DrawPolyLineBezier(
+                                    sal_uInt32 nPoints,
+                                    const SalPoint* pPtAry,
+                                    const PolyFlags* pFlgAry,
+                                    const OutputDevice *pOutDev );
+
+    bool                        DrawPolygonBezier(
+                                    sal_uInt32 nPoints,
+                                    const SalPoint* pPtAry,
+                                    const PolyFlags* pFlgAry,
+                                    const OutputDevice *pOutDev );
+
+    bool                        DrawPolyPolygonBezier(
+                                    sal_uInt32 nPoly,
+                                    const sal_uInt32* pPoints,
+                                    const SalPoint* const* pPtAry,
+                                    const PolyFlags* const* pFlgAry,
+                                    const OutputDevice *pOutDev );
+
+    bool                        DrawGradient(
+                                    const tools::PolyPolygon& rPolyPoly,
+                                    const Gradient& rGradient );
+
+    bool DrawGradient(basegfx::B2DPolyPolygon const & rPolyPolygon,
+                      SalGradient const & rGradient);
+
+    // CopyArea --> No RasterOp, but ClipRegion
+    void                        CopyArea(
+                                    long nDestX, long nDestY,
+                                    long nSrcX, long nSrcY,
+                                    long nSrcWidth, long nSrcHeight,
+                                    const OutputDevice *pOutDev );
+
+    // CopyBits and DrawBitmap --> RasterOp and ClipRegion
+    // CopyBits() --> pSrcGraphics == NULL, then CopyBits on same Graphics
+    void                        CopyBits(
+                                    const SalTwoRect& rPosAry,
+                                    SalGraphics* pSrcGraphics,
+                                    const OutputDevice *pOutDev,
+                                    const OutputDevice *pSrcOutDev );
+
+    void                        DrawBitmap(
+                                    const SalTwoRect& rPosAry,
+                                    const SalBitmap& rSalBitmap,
+                                    const OutputDevice *pOutDev );
+
+    void                        DrawBitmap(
+                                    const SalTwoRect& rPosAry,
+                                    const SalBitmap& rSalBitmap,
+                                    const SalBitmap& rTransparentBitmap,
+                                    const OutputDevice *pOutDev );
+
+    void                        DrawMask(
+                                    const SalTwoRect& rPosAry,
+                                    const SalBitmap& rSalBitmap,
+                                    Color nMaskColor,
+                                    const OutputDevice *pOutDev );
+
+    std::shared_ptr<SalBitmap>  GetBitmap(
+                                    long nX, long nY,
+                                    long nWidth, long nHeight,
+                                    const OutputDevice *pOutDev );
+
+    Color                       GetPixel(
+                                    long nX, long nY,
+                                    const OutputDevice *pOutDev );
+
+    // invert --> ClipRegion (only Windows)
+    void                        Invert(
+                                    long nX, long nY,
+                                    long nWidth, long nHeight,
+                                    SalInvert nFlags,
+                                    const OutputDevice *pOutDev );
+
+    void                        Invert(
+                                    sal_uInt32 nPoints,
+                                    const SalPoint* pPtAry,
+                                    SalInvert nFlags,
+                                    const OutputDevice *pOutDev );
+
+    bool                        DrawEPS(
+                                    long nX, long nY,
+                                    long nWidth, long nHeight,
+                                    void* pPtr,
+                                    sal_uInt32 nSize,
+                                    const OutputDevice *pOutDev );
+
+    //  native widget rendering functions
+
+    /**
+     * @see WidgetDrawInterface::isNativeControlSupported
+     */
+    inline bool IsNativeControlSupported(ControlType, ControlPart);
+
+    /**
+     * @see WidgetDrawInterface::hitTestNativeControl
+     */
+    bool                        HitTestNativeScrollbar(
+                                    ControlPart nPart,
+                                    const tools::Rectangle& rControlRegion,
+                                    const Point& aPos,
+                                    bool& rIsInside,
+                                    const OutputDevice *pOutDev );
+
+    /**
+     * @see WidgetDrawInterface::drawNativeControl
+     */
+    bool                        DrawNativeControl(
+                                    ControlType nType,
+                                    ControlPart nPart,
+                                    const tools::Rectangle& rControlRegion,
+                                    ControlState nState,
+                                    const ImplControlValue& aValue,
+                                    const OUString& aCaption,
+                                    const OutputDevice *pOutDev,
+                                    const Color& rBackgroundColor = COL_AUTO );
+
+    /**
+     * @see WidgetDrawInterface::getNativeControlRegion
+     */
+    bool                        GetNativeControlRegion(
+                                    ControlType nType,
+                                    ControlPart nPart,
+                                    const tools::Rectangle& rControlRegion,
+                                    ControlState nState,
+                                    const ImplControlValue& aValue,
+                                    tools::Rectangle &rNativeBoundingRegion,
+                                    tools::Rectangle &rNativeContentRegion,
+                                    const OutputDevice *pOutDev );
+
+    /**
+     * @see WidgetDrawInterface::updateSettings
+     */
+    inline bool UpdateSettings(AllSettings&);
+
+    bool                        BlendBitmap(
+                                    const SalTwoRect& rPosAry,
+                                    const SalBitmap& rSalBitmap,
+                                    const OutputDevice *pOutDev );
+
+    bool                        BlendAlphaBitmap(
+                                    const SalTwoRect& rPosAry,
+                                    const SalBitmap& rSalSrcBitmap,
+                                    const SalBitmap& rSalMaskBitmap,
+                                    const SalBitmap& rSalAlphaBitmap,
+                                    const OutputDevice *pOutDev );
+
+    bool                        DrawAlphaBitmap(
+                                    const SalTwoRect&,
+                                    const SalBitmap& rSourceBitmap,
+                                    const SalBitmap& rAlphaBitmap,
+                                    const OutputDevice *pOutDev );
+
+    bool                        DrawTransformedBitmap(
+                                    const basegfx::B2DPoint& rNull,
+                                    const basegfx::B2DPoint& rX,
+                                    const basegfx::B2DPoint& rY,
+                                    const SalBitmap& rSourceBitmap,
+                                    const SalBitmap* pAlphaBitmap,
+                                    const OutputDevice* pOutDev );
+
+    bool                        DrawAlphaRect(
+                                    long nX, long nY,
+                                    long nWidth, long nHeight,
+                                    sal_uInt8 nTransparency,
+                                    const OutputDevice *pOutDev );
+
+    virtual OUString getRenderBackendName() const;
+
+    virtual SystemGraphicsData  GetGraphicsData() const = 0;
+
+#if ENABLE_CAIRO_CANVAS
+
+    /// Check whether cairo will work
+    virtual bool                SupportsCairo() const = 0;
+    /// Create Surface from given cairo surface
+    virtual cairo::SurfaceSharedPtr CreateSurface(const cairo::CairoSurfaceSharedPtr& rSurface) const = 0;
+    /// Create surface with given dimensions
+    virtual cairo::SurfaceSharedPtr CreateSurface(const OutputDevice& rRefDevice, int x, int y, int width, int height) const = 0;
+    /// Create Surface for given bitmap data
+    virtual cairo::SurfaceSharedPtr CreateBitmapSurface(const OutputDevice& rRefDevice, const BitmapSystemData& rData, const Size& rSize) const = 0;
+    virtual css::uno::Any       GetNativeSurfaceHandle(cairo::SurfaceSharedPtr& rSurface, const basegfx::B2ISize& rSize) const = 0;
+
+    virtual SystemFontData      GetSysFontData( int nFallbacklevel ) const = 0;
+
+#endif // ENABLE_CAIRO_CANVAS
+
+protected:
+    virtual bool                setClipRegion( const vcl::Region& ) = 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;
+
+    virtual bool                drawGradient(
+                                    const tools::PolyPolygon& rPolyPoly,
+                                    const Gradient& rGradient ) = 0;
+
+    virtual bool implDrawGradient(basegfx::B2DPolyPolygon const & /*rPolyPolygon*/,
+                                  SalGradient const & /*rGradient*/)
+    {
+        return false;
+    }
+
+    // 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;
+
+    /** Blend the bitmap with the current buffer */
+    virtual bool                blendBitmap(
+                                    const SalTwoRect&,
+                                    const SalBitmap& rBitmap ) = 0;
+
+    /** Draw the bitmap by blending using the mask and alpha channel */
+    virtual bool                blendAlphaBitmap(
+                                    const SalTwoRect&,
+                                    const SalBitmap& rSrcBitmap,
+                                    const SalBitmap& rMaskBitmap,
+                                    const SalBitmap& rAlphaBitmap ) = 0;
+
+    /** Render bitmap with alpha channel
+
+        @param rSourceBitmap
+        Source bitmap to blit
+
+        @param rAlphaBitmap
+        Alpha channel to use for blitting
+
+        @return true, if the operation succeeded, and false
+        otherwise. In this case, clients should try to emulate alpha
+        compositing themselves
+     */
+    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;
+
+    /** Render solid rectangle with given transparency
+     *
+     * @param nX             Top left coordinate of rectangle
+     * @param nY             Bottom right coordinate of rectangle
+     * @param nWidth         Width of rectangle
+     * @param nHeight        Height of rectangle
+     * @param nTransparency  Transparency value (0-255) to use. 0 blits and opaque, 255 a
+     *                       fully transparent rectangle
+     * @returns true if successfully drawn, false if not able to draw rectangle
+     */
+    virtual bool                drawAlphaRect(
+                                    long nX, long nY,
+                                    long nWidth, long nHeight,
+                                    sal_uInt8 nTransparency ) = 0;
+
+private:
+    SalLayoutFlags              m_nLayout; //< 0: mirroring off, 1: mirror x-axis
+
+    // for buffering the Mirror-Matrix, see ::getMirror
+    basegfx::B2DHomMatrix       m_aLastMirror;
+    long                        m_aLastMirrorW;
+
+protected:
+    /// flags which hold the SetAntialiasing() value from OutputDevice
+    bool                        m_bAntiAliasB2DDraw : 1;
+
+    inline long GetDeviceWidth(const OutputDevice* pOutDev) const;
+
+    /**
+     * Handle damage done by drawing with a widget draw override
+     *
+     * If a m_pWidgetDraw is set and successfully draws using drawNativeControl,
+     * this function is called to handle the damage done to the graphics buffer.
+     *
+     * @param rDamagedRegion the region damaged by drawNativeControl.
+     **/
+    virtual inline void handleDamage(const tools::Rectangle& rDamagedRegion);
+
+    // native controls
+    bool initWidgetDrawBackends(bool bForce = false);
+
+    std::unique_ptr<vcl::WidgetDrawInterface> m_pWidgetDraw;
+    vcl::WidgetDrawInterface* forWidget() { return m_pWidgetDraw ? m_pWidgetDraw.get() : this; }
+};
+
+bool SalGraphics::IsNativeControlSupported(ControlType eType, ControlPart ePart)
+{
+    return forWidget()->isNativeControlSupported(eType, ePart);
+}
+
+bool SalGraphics::UpdateSettings(AllSettings& rSettings)
+{
+    return forWidget()->updateSettings(rSettings);
+}
+
+void SalGraphics::handleDamage(const tools::Rectangle&) {}
+
+#endif // INCLUDED_VCL_INC_SALGDI_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */