x11_dragdrop.cpp
资源名称:vlc-1.0.5.zip [点击查看]
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上传日期:2020-07-06
资源大小:29949k
文件大小:7k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * x11_dragdrop.cpp
- *****************************************************************************
- * Copyright (C) 2003 the VideoLAN team
- * $Id: fd77b6c103187891b4a5e3c261b33341649ca7e7 $
- *
- * Authors: Cyril Deguet <asmax@via.ecp.fr>
- * Olivier Teulière <ipkiss@via.ecp.fr>
- *
- * This program 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 program 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, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifdef X11_SKINS
- #include <X11/Xlib.h>
- #include <X11/Xatom.h>
- #include "x11_dragdrop.hpp"
- #include "x11_display.hpp"
- #include "x11_factory.hpp"
- #include "../commands/cmd_add_item.hpp"
- #include <string>
- #include <list>
- X11DragDrop::X11DragDrop( intf_thread_t *pIntf, X11Display &rDisplay,
- Window win, bool playOnDrop ):
- SkinObject( pIntf ), m_rDisplay( rDisplay ), m_wnd( win ),
- m_playOnDrop( playOnDrop )
- {
- }
- void X11DragDrop::dndEnter( ldata_t data )
- {
- Window src = data[0];
- // Retrieve available data types
- list<string> dataTypes;
- if( data[1] & 1 ) // More than 3 data types ?
- {
- Atom type;
- int format;
- unsigned long nitems, nbytes;
- Atom *dataList;
- Atom typeListAtom = XInternAtom( XDISPLAY, "XdndTypeList", 0 );
- XGetWindowProperty( XDISPLAY, src, typeListAtom, 0, 65536, False,
- XA_ATOM, &type, &format, &nitems, &nbytes,
- (unsigned char**)&dataList );
- for( unsigned long i=0; i<nitems; i++ )
- {
- string dataType = XGetAtomName( XDISPLAY, dataList[i] );
- dataTypes.push_back( dataType );
- }
- XFree( (void*)dataList );
- }
- else
- {
- for( int i = 2; i < 5; i++ )
- {
- if( data[i] != None )
- {
- string dataType = XGetAtomName( XDISPLAY, data[i] );
- dataTypes.push_back( dataType );
- }
- }
- }
- // Find the right target
- m_target = None;
- list<string>::iterator it;
- for( it = dataTypes.begin(); it != dataTypes.end(); it++ )
- {
- if( *it == "text/plain" || *it == "STRING" )
- {
- m_target = XInternAtom( XDISPLAY, (*it).c_str(), 0 );
- break;
- }
- }
- }
- void X11DragDrop::dndPosition( ldata_t data )
- {
- Window src = data[0];
- Time time = data[2];
- Atom selectionAtom = XInternAtom( XDISPLAY, "XdndSelection", 0 );
- Atom targetAtom = XInternAtom( XDISPLAY, "text/plain", 0 );
- Atom propAtom = XInternAtom( XDISPLAY, "VLC_SELECTION", 0 );
- Atom actionAtom = XInternAtom( XDISPLAY, "XdndActionCopy", 0 );
- Atom typeAtom = XInternAtom( XDISPLAY, "XdndFinished", 0 );
- // Convert the selection into the given target
- // NEEDED or it doesn't work!
- XConvertSelection( XDISPLAY, selectionAtom, targetAtom, propAtom, src,
- time );
- actionAtom = XInternAtom( XDISPLAY, "XdndActionCopy", 0 );
- typeAtom = XInternAtom( XDISPLAY, "XdndStatus", 0 );
- XEvent event;
- event.type = ClientMessage;
- event.xclient.window = src;
- event.xclient.display = XDISPLAY;
- event.xclient.message_type = typeAtom;
- event.xclient.format = 32;
- event.xclient.data.l[0] = m_wnd;
- if( m_target != None )
- {
- // Accept the drop
- event.xclient.data.l[1] = 1;
- }
- else
- {
- // Do not accept the drop
- event.xclient.data.l[1] = 0;
- }
- int w = X11Factory::instance( getIntf() )->getScreenWidth();
- int h = X11Factory::instance( getIntf() )->getScreenHeight();
- event.xclient.data.l[2] = 0;
- event.xclient.data.l[3] = (w << 16) | h;
- event.xclient.data.l[4] = actionAtom;
- // Tell the source whether we accept the drop
- XSendEvent( XDISPLAY, src, False, 0, &event );
- }
- void X11DragDrop::dndLeave( ldata_t data )
- {
- }
- void X11DragDrop::dndDrop( ldata_t data )
- {
- Window src = data[0];
- Time time = data[2];
- Atom selectionAtom = XInternAtom( XDISPLAY, "XdndSelection", 0 );
- Atom targetAtom = XInternAtom( XDISPLAY, "text/plain", 0 );
- Atom propAtom = XInternAtom( XDISPLAY, "VLC_SELECTION", 0 );
- Atom actionAtom = XInternAtom( XDISPLAY, "XdndActionCopy", 0 );
- Atom typeAtom = XInternAtom( XDISPLAY, "XdndFinished", 0 );
- // Convert the selection into the given target
- XConvertSelection( XDISPLAY, selectionAtom, targetAtom, propAtom, src,
- time );
- // Read the selection
- Atom type;
- int format;
- unsigned long nitems, nbytes;
- char *buffer;
- XGetWindowProperty( XDISPLAY, src, propAtom, 0, 1024, False,
- AnyPropertyType, &type, &format, &nitems, &nbytes,
- (unsigned char**)&buffer );
- string selection = "";
- if( buffer != NULL )
- {
- selection = buffer;
- }
- XFree( buffer );
- if( selection != "" )
- {
- // TODO: multiple files handling
- string::size_type end = selection.find( "n", 0 );
- selection = selection.substr( 0, end - 1 );
- end = selection.find( "r", 0 );
- selection = selection.substr( 0, end - 1 );
- // Find the protocol, if any
- if( selection.find( "file://", 0 ) == 0 )
- {
- selection.erase( 0, 7 );
- }
- char *psz_fileName = new char[selection.size() + 1];
- strncpy( psz_fileName, selection.c_str(), selection.size() + 1 );
- // Add the file
- CmdAddItem cmd( getIntf(), psz_fileName, m_playOnDrop );
- cmd.execute();
- delete[] psz_fileName;
- }
- // Tell the source we accepted the drop
- XEvent event;
- event.type = ClientMessage;
- event.xclient.window = src;
- event.xclient.display = XDISPLAY;
- event.xclient.message_type = typeAtom;
- event.xclient.format = 32;
- event.xclient.data.l[0] = m_wnd;
- event.xclient.data.l[1] = 1; // drop accepted
- event.xclient.data.l[2] = actionAtom;
- XSendEvent( XDISPLAY, src, False, 0, &event );
- }
- #endif