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, 307 insertions, 0 deletions

diff --git a/vcl/unx/generic/gdi/cairo_xlib_cairo.cxx b/vcl/unx/generic/gdi/cairo_xlib_cairo.cxx
new file mode 100644
index 000000000..17b34442b
--- /dev/null
+++ b/vcl/unx/generic/gdi/cairo_xlib_cairo.cxx
@@ -0,0 +1,307 @@
+/* -*- 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 <X11/Xlib.h>
+#include <X11/extensions/Xrender.h>
+
+#include "cairo_xlib_cairo.hxx"
+
+#include <vcl/sysdata.hxx>
+#include <vcl/bitmap.hxx>
+#include <vcl/virdev.hxx>
+#include <sal/log.hxx>
+
+#include <cairo-xlib.h>
+#include <cairo-xlib-xrender.h>
+
+namespace
+{
+    Pixmap limitXCreatePixmap(Display *display, Drawable d, unsigned int width, unsigned int height, unsigned int depth)
+    {
+        // The X protocol request CreatePixmap puts an upper bound
+        // of 16 bit to the size. And in practice some drivers
+        // fall over with values close to the max.
+
+        // see, e.g. moz#424333, fdo#48961, rhbz#1086714
+        // we've a duplicate of this in vcl :-(
+        if (width > SAL_MAX_INT16-10 || height > SAL_MAX_INT16-10)
+        {
+            SAL_WARN("canvas", "overlarge pixmap: " << width << " x " << height);
+            return None;
+        }
+        return XCreatePixmap(display, d, width, height, depth);
+    }
+}
+
+namespace cairo
+{
+
+    X11SysData::X11SysData() :
+        pDisplay(nullptr),
+        hDrawable(0),
+        pVisual(nullptr),
+        nScreen(0),
+        pRenderFormat(nullptr)
+    {}
+
+    X11SysData::X11SysData( const SystemGraphicsData& pSysDat ) :
+        pDisplay(pSysDat.pDisplay),
+        hDrawable(pSysDat.hDrawable),
+        pVisual(pSysDat.pVisual),
+        nScreen(pSysDat.nScreen),
+        pRenderFormat(pSysDat.pXRenderFormat)
+    {}
+
+    X11SysData::X11SysData( const SystemEnvData& pSysDat, const SalFrame* pReference ) :
+        pDisplay(pSysDat.pDisplay),
+        hDrawable(pSysDat.GetWindowHandle(pReference)),
+        pVisual(pSysDat.pVisual),
+        nScreen(pSysDat.nScreen),
+        pRenderFormat(nullptr)
+    {}
+
+    X11Pixmap::~X11Pixmap()
+    {
+        if( mpDisplay && mhDrawable )
+            XFreePixmap( static_cast<Display*>(mpDisplay), mhDrawable );
+    }
+
+    /**
+     * Surface::Surface:   Create Canvas surface with existing data
+     * @param pSysData Platform native system environment data (struct SystemEnvData in vcl/inc/sysdata.hxx)
+     * @param pSurface Cairo surface
+     *
+     * pSysData contains the platform native Drawable reference
+     * This constructor only stores data, it does no processing.
+     * It is used by e.g. Surface::getSimilar()
+     *
+     * Set the mpSurface as pSurface
+     **/
+    X11Surface::X11Surface( const X11SysData&            rSysData,
+                            const X11PixmapSharedPtr&    rPixmap,
+                            const CairoSurfaceSharedPtr& pSurface ) :
+        maSysData(rSysData),
+        mpPixmap(rPixmap),
+        mpSurface(pSurface)
+    {}
+
+    /**
+     * Surface::Surface:     Create generic Canvas surface using given Cairo Surface
+     *
+     * @param pSurface Cairo Surface
+     *
+     * This constructor only stores data, it does no processing.
+     * It is used with e.g. cairo_image_surface_create_for_data()
+     * Unlike other constructors, mpSysData is set to NULL
+     *
+     * Set the mpSurface as pSurface
+     **/
+    X11Surface::X11Surface( const CairoSurfaceSharedPtr& pSurface ) :
+        maSysData(),
+        mpSurface(pSurface)
+    {}
+
+    /**
+     * Surface::Surface:   Create Canvas surface from Window reference.
+     * @param pSysData Platform native system environment data (struct SystemEnvData in vcl/inc/sysdata.hxx)
+     * @param x horizontal location of the new surface
+     * @param y vertical location of the new surface
+     * @param width width of the new surface
+     * @param height height of the new surface
+     *
+     * pSysData contains the platform native Window reference.
+     *
+     * pSysData is used to create a surface on the Window
+     *
+     * Set the mpSurface to the new surface or NULL
+     **/
+    X11Surface::X11Surface( const X11SysData& rSysData, int x, int y, int width, int height ) :
+        maSysData(rSysData),
+        mpSurface(
+            cairo_xlib_surface_create( static_cast<Display*>(rSysData.pDisplay),
+                                       rSysData.hDrawable,
+                                       static_cast<Visual*>(rSysData.pVisual),
+                                       width + x, height + y ),
+            &cairo_surface_destroy)
+    {
+        cairo_surface_set_device_offset(mpSurface.get(), x, y );
+    }
+
+    /**
+     * Surface::Surface:   Create platform native Canvas surface from BitmapSystemData
+     * @param pSysData Platform native system environment data (struct SystemEnvData in vcl/inc/sysdata.hxx)
+     * @param pBmpData Platform native image data (struct BitmapSystemData in vcl/inc/bitmap.hxx)
+     * @param width width of the new surface
+     * @param height height of the new surface
+     *
+     * The pBmpData provides the imagedata that the created surface should contain.
+     *
+     * Set the mpSurface to the new surface or NULL
+     **/
+    X11Surface::X11Surface( const X11SysData&       rSysData,
+                            const BitmapSystemData& rData ) :
+        maSysData( rSysData ),
+        mpSurface(
+            cairo_xlib_surface_create( static_cast<Display*>(rSysData.pDisplay),
+                                       reinterpret_cast<Drawable>(rData.aPixmap),
+                                       static_cast<Visual*>(rSysData.pVisual),
+                                       rData.mnWidth, rData.mnHeight ),
+            &cairo_surface_destroy)
+    {
+    }
+
+    /**
+     * Surface::getCairo:  Create Cairo (drawing object) for the Canvas surface
+     *
+     * @return new Cairo or NULL
+     **/
+    CairoSharedPtr X11Surface::getCairo() const
+    {
+        return CairoSharedPtr( cairo_create(mpSurface.get()),
+                               &cairo_destroy );
+    }
+
+    /**
+     * Surface::getSimilar:  Create new similar Canvas surface
+     * @param cairo_content_type format of the new surface (cairo_content_t from cairo/src/cairo.h)
+     * @param width width of the new surface
+     * @param height height of the new surface
+     *
+     * Creates a new Canvas surface. This normally creates platform native surface, even though
+     * generic function is used.
+     *
+     * Cairo surface from cairo_content_type (cairo_content_t)
+     *
+     * @return new surface or NULL
+     **/
+    SurfaceSharedPtr X11Surface::getSimilar(int cairo_content_type, int width, int height ) const
+    {
+        if( maSysData.pDisplay && maSysData.hDrawable )
+        {
+            XRenderPictFormat* pFormat;
+            int nFormat;
+
+            switch (cairo_content_type)
+            {
+                case CAIRO_CONTENT_ALPHA:
+                    nFormat = PictStandardA8;
+                    break;
+                case CAIRO_CONTENT_COLOR:
+                    nFormat = PictStandardRGB24;
+                    break;
+                case CAIRO_CONTENT_COLOR_ALPHA:
+                default:
+                    nFormat = PictStandardARGB32;
+                    break;
+            }
+
+            pFormat = XRenderFindStandardFormat( static_cast<Display*>(maSysData.pDisplay), nFormat );
+            Pixmap hPixmap = limitXCreatePixmap( static_cast<Display*>(maSysData.pDisplay), maSysData.hDrawable,
+                                     width > 0 ? width : 1, height > 0 ? height : 1,
+                                     pFormat->depth );
+
+            X11SysData aSysData(maSysData);
+            aSysData.pRenderFormat = pFormat;
+            return SurfaceSharedPtr(
+                new X11Surface( aSysData,
+                                std::make_shared<X11Pixmap>(hPixmap, maSysData.pDisplay),
+                                CairoSurfaceSharedPtr(
+                                    cairo_xlib_surface_create_with_xrender_format(
+                                        static_cast<Display*>(maSysData.pDisplay),
+                                        hPixmap,
+                                        ScreenOfDisplay(static_cast<Display *>(maSysData.pDisplay), maSysData.nScreen),
+                                        pFormat, width, height ),
+                                    &cairo_surface_destroy) ));
+        }
+        else
+            return SurfaceSharedPtr(
+                new X11Surface( maSysData,
+                                X11PixmapSharedPtr(),
+                                CairoSurfaceSharedPtr(
+                                    cairo_surface_create_similar( mpSurface.get(),
+                                        static_cast<cairo_content_t>(cairo_content_type), width, height ),
+                                    &cairo_surface_destroy )));
+    }
+
+    VclPtr<VirtualDevice> X11Surface::createVirtualDevice() const
+    {
+        SystemGraphicsData aSystemGraphicsData;
+
+        cairo_surface_t* pSurface = mpSurface.get();
+
+        aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
+        aSystemGraphicsData.hDrawable = mpPixmap ? mpPixmap->mhDrawable : maSysData.hDrawable;
+        aSystemGraphicsData.pXRenderFormat = maSysData.pRenderFormat;
+        aSystemGraphicsData.pSurface = pSurface;
+
+        int width = cairo_xlib_surface_get_width(pSurface);
+        int height = cairo_xlib_surface_get_height(pSurface);
+
+        return VclPtr<VirtualDevice>::Create(aSystemGraphicsData,
+                              Size(width, height),
+                              getFormat());
+    }
+
+    /**
+     * Surface::Resize:  Resizes the Canvas surface.
+     * @param width new width of the surface
+     * @param height new height of the surface
+     *
+     * Only used on X11.
+     *
+     * @return The new surface or NULL
+     **/
+    bool X11Surface::Resize(int width, int height)
+    {
+        cairo_xlib_surface_set_size(mpSurface.get(), width, height);
+        return true;
+    }
+
+    void X11Surface::flush() const
+    {
+        XSync( static_cast<Display*>(maSysData.pDisplay), false );
+    }
+
+    /**
+     * Surface::getDepth:  Get the color depth of the Canvas surface.
+     *
+     * @return color depth
+     **/
+    int X11Surface::getDepth() const
+    {
+        if (maSysData.pRenderFormat)
+            return static_cast<XRenderPictFormat*>(maSysData.pRenderFormat)->depth;
+        return -1;
+    }
+
+    /**
+     * Surface::getFormat:  Get the device format of the Canvas surface.
+     *
+     * @return color format
+     **/
+    DeviceFormat X11Surface::getFormat() const
+    {
+        if (!maSysData.pRenderFormat)
+            return DeviceFormat::DEFAULT;
+        assert (static_cast<XRenderPictFormat*>(maSysData.pRenderFormat)->depth != 1 && "unsupported");
+        return DeviceFormat::DEFAULT;
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */