Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

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

1 files changed, 482 insertions, 0 deletions

diff --git a/vcl/unx/generic/gdi/salgdi.cxx b/vcl/unx/generic/gdi/salgdi.cxx
new file mode 100644
index 000000000..d6eecfecb
--- /dev/null
+++ b/vcl/unx/generic/gdi/salgdi.cxx
@@ -0,0 +1,482 @@
+/* -*- 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 .
+ */
+
+#include <config_features.h>
+#include <vcl/skia/SkiaHelper.hxx>
+#if HAVE_FEATURE_SKIA
+#include <skia/x11/gdiimpl.hxx>
+#include <skia/x11/textrender.hxx>
+#endif
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/extensions/Xrender.h>
+
+
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <basegfx/polygon/b2dpolypolygontools.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/curve/b2dcubicbezier.hxx>
+
+#include <headless/svpgdi.hxx>
+
+#include <vcl/sysdata.hxx>
+#include <vcl/virdev.hxx>
+#include <sal/log.hxx>
+
+#include <unx/salunx.h>
+#include <unx/saldisp.hxx>
+#include <unx/salgdi.h>
+#include <unx/x11/xlimits.hxx>
+
+#include <salframe.hxx>
+#include <salgdiimpl.hxx>
+#include <textrender.hxx>
+#include <salvd.hxx>
+#include "gdiimpl.hxx"
+
+#include <unx/x11/x11cairotextrender.hxx>
+#include <unx/x11/xrender_peer.hxx>
+#include "cairo_xlib_cairo.hxx"
+#include <cairo-xlib.h>
+
+#if ENABLE_CAIRO_CANVAS
+#include "X11CairoSalGraphicsImpl.hxx"
+#endif
+
+
+// X11Common
+
+X11Common::X11Common()
+    : m_hDrawable(None)
+    , m_pColormap(nullptr)
+    , m_pExternalSurface(nullptr)
+{}
+
+cairo_t* X11Common::getCairoContext()
+{
+    if (m_pExternalSurface)
+        return cairo_create(m_pExternalSurface);
+
+    cairo_surface_t* surface = cairo_xlib_surface_create(GetXDisplay(), m_hDrawable, GetVisual().visual, SAL_MAX_INT16, SAL_MAX_INT16);
+
+    cairo_t *cr = cairo_create(surface);
+    cairo_surface_destroy(surface);
+
+    return cr;
+}
+
+void X11Common::releaseCairoContext(cairo_t* cr)
+{
+   cairo_destroy(cr);
+}
+
+bool X11Common::SupportsCairo() const
+{
+    static bool bSupportsCairo = [this] {
+        Display *pDisplay = GetXDisplay();
+        int nDummy;
+        return XQueryExtension(pDisplay, "RENDER", &nDummy, &nDummy, &nDummy);
+    }();
+    return bSupportsCairo;
+}
+
+// X11SalGraphics
+
+X11SalGraphics::X11SalGraphics():
+    m_pFrame(nullptr),
+    m_pVDev(nullptr),
+    m_nXScreen( 0 ),
+    m_pXRenderFormat(nullptr),
+    m_aXRenderPicture(0),
+    mpClipRegion(nullptr),
+    hBrush_(None),
+    bWindow_(false),
+    bVirDev_(false)
+{
+#if HAVE_FEATURE_SKIA
+    if (SkiaHelper::isVCLSkiaEnabled())
+    {
+        mxImpl.reset(new X11SkiaSalGraphicsImpl(*this));
+        mxTextRenderImpl.reset(new SkiaTextRender);
+    }
+    else
+#endif
+    {
+        mxTextRenderImpl.reset(new X11CairoTextRender(*this));
+#if ENABLE_CAIRO_CANVAS
+        mxImpl.reset(new X11CairoSalGraphicsImpl(*this, maX11Common));
+#else
+        mxImpl.reset(new X11SalGraphicsImpl(*this));
+#endif
+    }
+}
+
+X11SalGraphics::~X11SalGraphics() COVERITY_NOEXCEPT_FALSE
+{
+    DeInit();
+    ReleaseFonts();
+    freeResources();
+}
+
+void X11SalGraphics::freeResources()
+{
+    Display *pDisplay = GetXDisplay();
+
+    if( mpClipRegion )
+    {
+        XDestroyRegion( mpClipRegion );
+        mpClipRegion = nullptr;
+    }
+
+    mxImpl->freeResources();
+
+    if( hBrush_ )
+    {
+        XFreePixmap( pDisplay, hBrush_ );
+        hBrush_ = None;
+    }
+    if( m_pDeleteColormap )
+    {
+        m_pDeleteColormap.reset();
+        maX11Common.m_pColormap = nullptr;
+    }
+    if( m_aXRenderPicture )
+    {
+        XRenderPeer::GetInstance().FreePicture( m_aXRenderPicture );
+        m_aXRenderPicture = 0;
+    }
+}
+
+SalGraphicsImpl* X11SalGraphics::GetImpl() const
+{
+    return mxImpl.get();
+}
+
+void X11SalGraphics::SetDrawable(Drawable aDrawable, cairo_surface_t* pExternalSurface, SalX11Screen nXScreen)
+{
+    maX11Common.m_pExternalSurface = pExternalSurface;
+
+    // shortcut if nothing changed
+    if( maX11Common.m_hDrawable == aDrawable )
+        return;
+
+    // free screen specific resources if needed
+    if( nXScreen != m_nXScreen )
+    {
+        freeResources();
+        maX11Common.m_pColormap = &vcl_sal::getSalDisplay(GetGenericUnixSalData())->GetColormap( nXScreen );
+        m_nXScreen = nXScreen;
+    }
+
+    maX11Common.m_hDrawable = aDrawable;
+    SetXRenderFormat( nullptr );
+    if( m_aXRenderPicture )
+    {
+        XRenderPeer::GetInstance().FreePicture( m_aXRenderPicture );
+        m_aXRenderPicture = 0;
+    }
+}
+
+void X11SalGraphics::Init( SalFrame *pFrame, Drawable aTarget,
+                           SalX11Screen nXScreen )
+{
+    maX11Common.m_pColormap = &vcl_sal::getSalDisplay(GetGenericUnixSalData())->GetColormap(nXScreen);
+    m_nXScreen  = nXScreen;
+
+    m_pFrame    = pFrame;
+    m_pVDev     = nullptr;
+
+    bWindow_    = true;
+    bVirDev_    = false;
+
+    SetDrawable(aTarget, nullptr, nXScreen);
+    mxImpl->Init();
+}
+
+void X11SalGraphics::DeInit()
+{
+    mxImpl->DeInit();
+    SetDrawable(None, nullptr, m_nXScreen);
+}
+
+void X11SalGraphics::SetClipRegion( GC pGC, Region pXReg ) const
+{
+    Display *pDisplay = GetXDisplay();
+
+    int n = 0;
+    Region Regions[3];
+
+    if( mpClipRegion )
+        Regions[n++] = mpClipRegion;
+
+    if( pXReg && !XEmptyRegion( pXReg ) )
+        Regions[n++] = pXReg;
+
+    if( 0 == n )
+        XSetClipMask( pDisplay, pGC, None );
+    else if( 1 == n )
+        XSetRegion( pDisplay, pGC, Regions[0] );
+    else
+    {
+        Region pTmpRegion = XCreateRegion();
+        XIntersectRegion( Regions[0], Regions[1], pTmpRegion );
+
+        XSetRegion( pDisplay, pGC, pTmpRegion );
+        XDestroyRegion( pTmpRegion );
+    }
+}
+
+// Calculate a dither-pixmap and make a brush of it
+#define P_DELTA         51
+#define DMAP( v, m )    ((v % P_DELTA) > m ? (v / P_DELTA) + 1 : (v / P_DELTA))
+
+bool X11SalGraphics::GetDitherPixmap( Color nColor )
+{
+    static const short nOrdDither8Bit[ 8 ][ 8 ] =
+    {
+        { 0, 38,  9, 48,  2, 40, 12, 50},
+        {25, 12, 35, 22, 28, 15, 37, 24},
+        { 6, 44,  3, 41,  8, 47,  5, 44},
+        {32, 19, 28, 16, 34, 21, 31, 18},
+        { 1, 40, 11, 49,  0, 39, 10, 48},
+        {27, 14, 36, 24, 26, 13, 36, 23},
+        { 8, 46,  4, 43,  7, 45,  4, 42},
+        {33, 20, 30, 17, 32, 20, 29, 16}
+    };
+
+    // test for correct depth (8bit)
+    if( GetColormap().GetVisual().GetDepth() != 8 )
+        return false;
+
+    char    pBits[64];
+    char   *pBitsPtr = pBits;
+
+    // Set the palette-entries for the dithering tile
+    sal_uInt8 nColorRed   = nColor.GetRed();
+    sal_uInt8 nColorGreen = nColor.GetGreen();
+    sal_uInt8 nColorBlue  = nColor.GetBlue();
+
+    for(auto & nY : nOrdDither8Bit)
+    {
+        for( int nX = 0; nX < 8; nX++ )
+        {
+            short nMagic = nY[nX];
+            sal_uInt8 nR   = P_DELTA * DMAP( nColorRed,   nMagic );
+            sal_uInt8 nG   = P_DELTA * DMAP( nColorGreen, nMagic );
+            sal_uInt8 nB   = P_DELTA * DMAP( nColorBlue,  nMagic );
+
+            *pBitsPtr++ = GetColormap().GetPixel( Color( nR, nG, nB ) );
+        }
+    }
+
+    // create the tile as ximage and an according pixmap -> caching
+    XImage *pImage = XCreateImage( GetXDisplay(),
+                                   GetColormap().GetXVisual(),
+                                   8,
+                                   ZPixmap,
+                                   0,               // offset
+                                   pBits,           // data
+                                   8, 8,            // width & height
+                                   8,               // bitmap_pad
+                                   0 );             // (default) bytes_per_line
+
+    if( !hBrush_ )
+        hBrush_ = limitXCreatePixmap( GetXDisplay(), GetDrawable(), 8, 8, 8 );
+
+    // put the ximage to the pixmap
+    XPutImage( GetXDisplay(),
+               hBrush_,
+               GetDisplay()->GetCopyGC( m_nXScreen ),
+               pImage,
+               0, 0,                        // Source
+               0, 0,                        // Destination
+               8, 8 );                      // width & height
+
+    // destroy image-frame but not palette-data
+    pImage->data = nullptr;
+    XDestroyImage( pImage );
+
+    return true;
+}
+
+void X11SalGraphics::GetResolution( sal_Int32 &rDPIX, sal_Int32 &rDPIY ) // const
+{
+    char* pForceDpi;
+    if ((pForceDpi = getenv("SAL_FORCEDPI")))
+    {
+        OString sForceDPI(pForceDpi);
+        rDPIX = rDPIY = sForceDPI.toInt32();
+        return;
+    }
+
+    const SalDisplay *pDisplay = GetDisplay();
+    if (!pDisplay)
+    {
+        SAL_WARN( "vcl", "Null display");
+        rDPIX = rDPIY = 96;
+        return;
+    }
+
+    Pair dpi = pDisplay->GetResolution();
+    rDPIX = dpi.A();
+    rDPIY = dpi.B();
+
+    if ( rDPIY > 200 )
+    {
+        rDPIX = Divide( rDPIX * 200, rDPIY );
+        rDPIY = 200;
+    }
+
+    // #i12705# equalize x- and y-resolution if they are close enough
+    if( rDPIX == rDPIY )
+        return;
+
+    // different x- and y- resolutions are usually artifacts of
+    // a wrongly calculated screen size.
+#ifdef DEBUG
+    SAL_INFO("vcl.gdi", "Forcing Resolution from "
+        << std::hex << rDPIX
+        << std::dec << rDPIX
+        << " to "
+        << std::hex << rDPIY
+        << std::dec << rDPIY);
+#endif
+    rDPIX = rDPIY; // y-resolution is more trustworthy
+}
+
+XRenderPictFormat* X11SalGraphics::GetXRenderFormat() const
+{
+    if( m_pXRenderFormat == nullptr )
+        m_pXRenderFormat = XRenderPeer::GetInstance().FindVisualFormat( GetVisual().visual );
+    return m_pXRenderFormat;
+}
+
+SystemGraphicsData X11SalGraphics::GetGraphicsData() const
+{
+    SystemGraphicsData aRes;
+
+    aRes.nSize = sizeof(aRes);
+    aRes.pDisplay  = GetXDisplay();
+    aRes.hDrawable = maX11Common.m_hDrawable;
+    aRes.pVisual   = GetVisual().visual;
+    aRes.nScreen   = m_nXScreen.getXScreen();
+    aRes.pXRenderFormat = m_pXRenderFormat;
+    return aRes;
+}
+
+void X11SalGraphics::Flush()
+{
+    if( X11GraphicsImpl* x11Impl = dynamic_cast< X11GraphicsImpl* >( mxImpl.get()))
+        x11Impl->Flush();
+}
+
+#if ENABLE_CAIRO_CANVAS
+
+bool X11SalGraphics::SupportsCairo() const
+{
+    return maX11Common.SupportsCairo();
+}
+
+cairo::SurfaceSharedPtr X11SalGraphics::CreateSurface(const cairo::CairoSurfaceSharedPtr& rSurface) const
+{
+    return std::make_shared<cairo::X11Surface>(rSurface);
+}
+
+namespace
+{
+    cairo::X11SysData getSysData( const vcl::Window& rWindow )
+    {
+        const SystemEnvData* pSysData = rWindow.GetSystemData();
+
+        if( !pSysData )
+            return cairo::X11SysData();
+        else
+            return cairo::X11SysData(*pSysData, rWindow.ImplGetFrame());
+    }
+
+    cairo::X11SysData getSysData( const VirtualDevice& rVirDev )
+    {
+        return cairo::X11SysData( rVirDev.GetSystemGfxData() );
+    }
+}
+
+cairo::SurfaceSharedPtr X11SalGraphics::CreateSurface( const OutputDevice& rRefDevice,
+                                int x, int y, int width, int height ) const
+{
+    if( rRefDevice.GetOutDevType() == OUTDEV_WINDOW )
+        return std::make_shared<cairo::X11Surface>(getSysData(*rRefDevice.GetOwnerWindow()),
+                                               x,y,width,height);
+    if( rRefDevice.IsVirtual() )
+        return std::make_shared<cairo::X11Surface>(getSysData(static_cast<const VirtualDevice&>(rRefDevice)),
+                                               x,y,width,height);
+    return cairo::SurfaceSharedPtr();
+}
+
+cairo::SurfaceSharedPtr X11SalGraphics::CreateBitmapSurface( const OutputDevice&     rRefDevice,
+                                      const BitmapSystemData& rData,
+                                      const Size&             rSize ) const
+{
+    SAL_INFO("vcl", "requested size: " << rSize.Width() << " x " << rSize.Height()
+              << " available size: " << rData.mnWidth << " x "
+              << rData.mnHeight);
+    if ( rData.mnWidth == rSize.Width() && rData.mnHeight == rSize.Height() )
+    {
+        if( rRefDevice.GetOutDevType() == OUTDEV_WINDOW )
+            return std::make_shared<cairo::X11Surface>(getSysData(*rRefDevice.GetOwnerWindow()), rData );
+        else if( rRefDevice.IsVirtual() )
+            return std::make_shared<cairo::X11Surface>(getSysData(static_cast<const VirtualDevice&>(rRefDevice)), rData );
+    }
+
+    return cairo::SurfaceSharedPtr();
+}
+
+css::uno::Any X11SalGraphics::GetNativeSurfaceHandle(cairo::SurfaceSharedPtr& rSurface, const basegfx::B2ISize& /*rSize*/) const
+{
+    cairo::X11Surface& rXlibSurface=dynamic_cast<cairo::X11Surface&>(*rSurface);
+    css::uno::Sequence< css::uno::Any > args{
+        css::uno::Any(false), // do not call XFreePixmap on it
+        css::uno::Any(sal_Int64(rXlibSurface.getPixmap()->mhDrawable)),
+        css::uno::Any(sal_Int32( rXlibSurface.getDepth() ))
+    };
+    return css::uno::Any(args);
+}
+
+#endif // ENABLE_CAIRO_CANVAS
+
+SalGeometryProvider *X11SalGraphics::GetGeometryProvider() const
+{
+    if (m_pFrame)
+        return static_cast< SalGeometryProvider * >(m_pFrame);
+    else
+        return static_cast< SalGeometryProvider * >(m_pVDev);
+}
+
+cairo_t* X11SalGraphics::getCairoContext()
+{
+    return maX11Common.getCairoContext();
+}
+
+void X11SalGraphics::releaseCairoContext(cairo_t* cr)
+{
+   X11Common::releaseCairoContext(cr);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */