/* Took WindowMaker implementation and adopted for MPlayer */#include <X11/Xlib.h>#include "ws.h"#include "wsxdnd.h"#include <stdio.h>#include <stdlib.h>#include <string.h>#include <X11/Xatom.h>#include "../mp_msg.h"#include "../help_mp.h"#define XDND_VERSION 3LAtom _XA_XdndAware;Atom _XA_XdndEnter;Atom _XA_XdndLeave;Atom _XA_XdndDrop;Atom _XA_XdndPosition;Atom _XA_XdndStatus;Atom _XA_XdndActionCopy;Atom _XA_XdndSelection;Atom _XA_XdndFinished;Atom _XA_XdndTypeList;Atom atom_support;void wsXDNDInitialize(void){    _XA_XdndAware = XInternAtom(wsDisplay, "XdndAware", False);    _XA_XdndEnter = XInternAtom(wsDisplay, "XdndEnter", False);    _XA_XdndLeave = XInternAtom(wsDisplay, "XdndLeave", False);    _XA_XdndDrop = XInternAtom(wsDisplay, "XdndDrop", False);    _XA_XdndPosition = XInternAtom(wsDisplay, "XdndPosition", False);    _XA_XdndStatus = XInternAtom(wsDisplay, "XdndStatus", False);    _XA_XdndActionCopy = XInternAtom(wsDisplay, "XdndActionCopy", False);    _XA_XdndSelection = XInternAtom(wsDisplay, "XdndSelection", False);    _XA_XdndFinished = XInternAtom(wsDisplay, "XdndFinished", False);    _XA_XdndTypeList = XInternAtom(wsDisplay, "XdndTypeList", False);}void wsXDNDMakeAwareness(wsTWindow* window) {    long int xdnd_version = XDND_VERSION;    XChangeProperty (wsDisplay, window->WindowID, _XA_XdndAware, XA_ATOM,            32, PropModeAppend, (char *)&xdnd_version, 1);}void wsXDNDClearAwareness(wsTWindow* window) {    XDeleteProperty (wsDisplay, window->WindowID, _XA_XdndAware);}#define MAX_DND_FILES 64BoolwsXDNDProcessSelection(wsTWindow* wnd, XEvent *event){    Atom ret_type;    int ret_format;    unsigned long ret_items;    unsigned long remain_byte;    char * delme;    XEvent xevent;    Window selowner = XGetSelectionOwner(wsDisplay,_XA_XdndSelection);    XGetWindowProperty(wsDisplay, event->xselection.requestor,            event->xselection.property,            0, 65536, True, atom_support, &ret_type, &ret_format,            &ret_items, &remain_byte, (unsigned char **)&delme);    /*send finished*/    memset (&xevent, 0, sizeof(xevent));    xevent.xany.type = ClientMessage;    xevent.xany.display = wsDisplay;    xevent.xclient.window = selowner;    xevent.xclient.message_type = _XA_XdndFinished;    xevent.xclient.format = 32;    XDND_FINISHED_TARGET_WIN(&xevent) = wnd->WindowID;    XSendEvent(wsDisplay, selowner, 0, 0, &xevent);    if (!delme){      mp_msg( MSGT_GPLAYER,MSGL_WARN,MSGTR_WS_DDNothing );      return False;    }    {      /* Handle dropped files */      char * retain = delme;      char * files[MAX_DND_FILES];      int num = 0;      while(retain < delme + ret_items) {	if (!strncmp(retain,"file:",5)) {	  /* add more 2 chars while removing 5 is harmless */	  retain+=5;	}	/* add the "retain" to the list */	files[num++]=retain;	/* now check for special characters */	{	  int newone = 0;	  while(retain < (delme + ret_items)){	    if(*retain == '\r' || *retain == '\n'){	      *retain=0;	      newone = 1;	    } else {	      if (newone)		break;	    }	    retain++;	  }	}	if (num >= MAX_DND_FILES)	  break;      }	      /* Handle the files */      if(wnd->DandDHandler){	wnd->DandDHandler(num,files);      }    }    free(delme);    return True;}BoolwsXDNDProcessClientMessage(wsTWindow* wnd, XClientMessageEvent *event){  /* test */  /*{    char * name = XGetAtomName(wsDisplay, event->message_type);    printf("Got %s\n",name);    XFree(name);    }*/  if (event->message_type == _XA_XdndEnter) {    Atom ok = XInternAtom(wsDisplay, "text/uri-list", False);    atom_support = None;    if ((event->data.l[1] & 1) == 0){      int index;      for(index = 0; index <= 2 ; index++){	if (event->data.l[2+index] == ok) {	  atom_support = ok;	}      }      if (atom_support == None) {	mp_msg( MSGT_GPLAYER,MSGL_WARN,MSGTR_WS_NotAFile );      }    } else {      /* need to check the whole list here */      unsigned long ret_left = 1;      int offset = 0;      Atom* ret_buff;      Atom ret_type;      int ret_format;      unsigned long ret_items;      /* while there is data left...*/      while(ret_left && atom_support == None){	XGetWindowProperty(wsDisplay,event->data.l[0],_XA_XdndTypeList,			   offset,256,False,XA_ATOM,&ret_type,			   &ret_format,&ret_items,&ret_left,			   (unsigned char**)&ret_buff);		/* sanity checks...*/	if(ret_buff == NULL || ret_type != XA_ATOM || ret_format != 8*sizeof(Atom)){	  XFree(ret_buff);	  break;	}	/* now chek what we've got */	{	  int i;	  for(i=0; i<ret_items; i++){	    if(ret_buff[i] == ok){	      atom_support = ok;	      break;	    }	  }	}	/* maybe next time ... */	XFree(ret_buff);	offset += 256;      }    }    return True;  }    if (event->message_type == _XA_XdndLeave) {    return True;  }    if (event->message_type == _XA_XdndDrop) {    if (event->data.l[0] != XGetSelectionOwner(wsDisplay, _XA_XdndSelection)){      puts("Wierd selection owner... QT?");    }    if (atom_support != None) {      XConvertSelection(wsDisplay, _XA_XdndSelection, atom_support,			_XA_XdndSelection, event->window,			CurrentTime);    }    return True;  }    if (event->message_type == _XA_XdndPosition) {    Window srcwin = event->data.l[0];    if (atom_support == None){      return True;    }    /* send response */    {      XEvent xevent;      memset (&xevent, 0, sizeof(xevent));      xevent.xany.type = ClientMessage;      xevent.xany.display = wsDisplay;      xevent.xclient.window = srcwin;      xevent.xclient.message_type = _XA_XdndStatus;      xevent.xclient.format = 32;             XDND_STATUS_TARGET_WIN (&xevent) = event->window;      XDND_STATUS_WILL_ACCEPT_SET (&xevent, True);      XDND_STATUS_WANT_POSITION_SET(&xevent, True);      /* actually need smth real here */      XDND_STATUS_RECT_SET(&xevent, 0, 0, 1024,768);      XDND_STATUS_ACTION(&xevent) = _XA_XdndActionCopy;            XSendEvent(wsDisplay, srcwin, 0, 0, &xevent);    }    return True;  }    return False;}