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/* -*- 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 ) :
pDisplay(pSysDat.pDisplay),
hDrawable(pSysDat.aWindow),
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(),
mpPixmap(),
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),
mpPixmap(),
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 ),
mpPixmap(),
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
{
Pixmap hPixmap;
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 );
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;
aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
aSystemGraphicsData.hDrawable = mpPixmap ? mpPixmap->mhDrawable : maSysData.hDrawable;
aSystemGraphicsData.pXRenderFormat = maSysData.pRenderFormat;
int width = cairo_xlib_surface_get_width(mpSurface.get());
int height = cairo_xlib_surface_get_height(mpSurface.get());
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;
switch (static_cast<XRenderPictFormat*>(maSysData.pRenderFormat)->depth)
{
case 1:
return DeviceFormat::BITMASK;
default:
return DeviceFormat::DEFAULT;
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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