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/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This software is distributed in the hope that it will be useful, but WITHOUT
* Any WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "XcbInterface.h"
#include "Debug.h"
#include "XcbUtil.h"
#if HAVE_XCB
#include <xcb/xcb.h>
#endif
//_________________________________________________________
void XcbInterface::findIcons( Job::List& jobs ) const
{
#if HAVE_XCB
// check atoms
if( !( XcbUtil::get().isSupported( XcbDefines::_NET_WM_PID ) && XcbUtil::get().isSupported( XcbDefines::_NET_WM_ICON ) ) )
{ return; }
// find recursively, starting from root window
_findIcons( XcbUtil::get().appRootWindow(), jobs );
#else
return;
#endif
}
//_________________________________________________________
void XcbInterface::_findIcons( WId window, Job::List& jobs ) const
{
#if HAVE_XCB
Debug::Throw() << "XcbInterface::_findIcons - window: " << window << endl;
// connection and atom
xcb_connection_t* connection( XcbUtil::get().connection<xcb_connection_t>() );
xcb_atom_t atom( *XcbUtil::get().atom<xcb_atom_t>( XcbDefines::_NET_WM_PID ) );
xcb_get_property_cookie_t cookie( xcb_get_property( connection, 0, window, atom, XCB_ATOM_CARDINAL, 0, 1 ) );
XcbUtil::ScopedPointer<xcb_get_property_reply_t> reply( xcb_get_property_reply( connection, cookie, nullptr ) );
if( reply )
{
const uint32_t pid( reinterpret_cast<uint32_t*>(xcb_get_property_value( reply.data() ))[0] );
// find matching job in list
Job::List::iterator jobIter = std::find_if( jobs.begin(), jobs.end(), Job::SameIdFTor( pid ) );
if( jobIter != jobs.end() )
{
// check job pixmap status
// no need to go further, nor find children windows if jobIter already has a pixmap
if( jobIter->iconInitialized() ) return;
// find window icon
QIcon icon( _icon( window ) );
if( !icon.isNull() )
{
jobIter->setIconInitialized( true );
jobIter->setIcon( icon );
return;
}
}
}
{
// parse children
xcb_query_tree_cookie_t cookie = xcb_query_tree( connection, window );
XcbUtil::ScopedPointer<xcb_query_tree_reply_t> reply( xcb_query_tree_reply( connection, cookie, nullptr ) );
if( !reply ) return;
const int childCount( xcb_query_tree_children_length( reply.data() ) );
xcb_window_t* children( xcb_query_tree_children( reply.data() ) );
for( int i=0; i < childCount; ++i )
{ _findIcons( children[i], jobs ); }
}
#endif
return;
}
//_________________________________________________________
QIcon XcbInterface::_icon( WId window ) const
{
QIcon result;
#if HAVE_XCB
Debug::Throw() << "XcbInterface::_icon - window: " << window << endl;
// connection and atom
xcb_connection_t* connection( XcbUtil::get().connection<xcb_connection_t>() );
xcb_atom_t atom( *XcbUtil::get().atom<xcb_atom_t>( XcbDefines::_NET_WM_ICON ) );
uint32_t offset(0);
xcb_get_property_reply_t* reply( nullptr );
forever
{
// width
uint32_t width(0);
xcb_get_property_cookie_t cookie( xcb_get_property( connection, 0, window, atom, XCB_ATOM_CARDINAL, offset, 1 ) );
if( (reply = xcb_get_property_reply( connection, cookie, nullptr )) && xcb_get_property_value_length( reply ) > 0 )
{
width = reinterpret_cast<uint32_t*>( xcb_get_property_value(reply) )[0];
free( reply );
++offset;
} else break;
// height
uint32_t height(0);
cookie = xcb_get_property( connection, 0, window, atom, XCB_ATOM_CARDINAL, offset, 1 );
if( (reply = xcb_get_property_reply( connection, cookie, nullptr )) && xcb_get_property_value_length( reply ) > 0 )
{
height = reinterpret_cast<uint32_t*>( xcb_get_property_value(reply) )[0];
free( reply );
++offset;
} else break;
// data
const uint32_t length( width*height );
cookie = xcb_get_property( connection, 0, window, atom, XCB_ATOM_CARDINAL, offset, length );
if( (reply = xcb_get_property_reply( connection, cookie, nullptr )) && xcb_get_property_value_length( reply ) > 0 )
{
// get image data
const uint32_t* imageData( reinterpret_cast<uint32_t*>( xcb_get_property_value( reply ) ) );
// create image
QImage image( width, height, QImage::Format_ARGB32);
for(int i=0; i<image.byteCount()/4; ++i)
{ ((uint32_t*)image.bits())[i] = imageData[i]; }
// add to icon
result.addPixmap( QPixmap::fromImage( image ) );
// free reply and increment offset
free( reply );
offset += length;
} else break;
}
// free
if( reply ) free( reply );
#endif
return result;
}
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