/* -*- 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 <utility>
#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 )
{}
X11SysData::X11SysData( const SystemGraphicsData& pSysDat ) :
pDisplay(static_cast <_XDisplay*>(pSysDat.pDisplay)),
hDrawable(pSysDat.hDrawable),
pVisual(static_cast <Visual*>(pSysDat.pVisual)),
nScreen(pSysDat.nScreen)
{}
X11SysData::X11SysData( const SystemEnvData& pSysDat, const SalFrame* pReference ) :
pDisplay(static_cast <_XDisplay*>(pSysDat.pDisplay)),
hDrawable(pSysDat.GetWindowHandle(pReference)),
pVisual(static_cast <Visual*>(pSysDat.pVisual)),
nScreen(pSysDat.nScreen)
{}
X11Pixmap::~X11Pixmap()
{
if ( mpDisplay && mhDrawable )
XFreePixmap( 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,
X11PixmapSharedPtr rPixmap,
CairoSurfaceSharedPtr pSurface ) :
maSysData(rSysData),
mpPixmap(std::move(rPixmap)),
mpSurface(std::move(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( CairoSurfaceSharedPtr pSurface ) :
maSysData(),
mpSurface(std::move(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( rSysData.pDisplay,
rSysData.hDrawable,
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( rSysData.pDisplay,
reinterpret_cast <Drawable>(rData.aPixmap),
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( maSysData.pDisplay, nFormat );
Pixmap hPixmap = limitXCreatePixmap( maSysData.pDisplay, maSysData.hDrawable,
width > 0 ? width : 1 , height > 0 ? height : 1 ,
pFormat->depth );
return SurfaceSharedPtr(
new X11Surface( maSysData,
std::make_shared<X11Pixmap>(hPixmap, maSysData.pDisplay),
CairoSurfaceSharedPtr(
cairo_xlib_surface_create_with_xrender_format(
maSysData.pDisplay,
hPixmap,
ScreenOfDisplay(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.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),
DeviceFormat::WITHOUT_ALPHA);
}
/**
* 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( maSysData.pDisplay, false );
}
}
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