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interface.c
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interface.c
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/***************************************************************************
interfaces.c - description
-------------------
begin : Wed Aug 17 14:03:54 EST 2005
copyright : (C) 2005-2010 by XVilka
email : xvilka@gmail.com
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include <X11/Xos.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "interface.h"
#include "stack.h"
unsigned window_debug = 0;
unsigned wid2pid_debug = 0;
void SetDebug(int debug)
{
window_debug = debug;
wid2pid_debug = debug;
}
Display *Open_Display(char *display_name)
{
Display *dpy;
dpy = XOpenDisplay(display_name);
if (dpy == NULL)
{
fprintf (stderr, "Unable to open display '%s'\n", XDisplayName (display_name));
}
return(dpy);
}
Window Get_Top_Window(Display *dpy, Window child)
{
Window root, parent;
Window *child_list;
unsigned int num_children;
if (!XQueryTree(dpy, child, &root, &parent, &child_list, &num_children))
fprintf(stderr, "Can't query window tree.\n");
if(parent == root) return child;
while(parent != root)
{
child = parent;
if (!XQueryTree(dpy, child, &root, &parent, &child_list, &num_children))
fprintf(stderr, "Can't query window tree.\n");
}
return child;
}
Window Select_Window_by_Mouse(Display *dpy)
{
int status;
Cursor cursor;
XEvent event;
Window target_win = 0, root;
int buttons = 0;
unsigned screen = 0;
root = RootWindow(dpy, screen);
cursor = XCreateFontCursor(dpy, XC_crosshair);
status = XGrabPointer(dpy, root, False, ButtonPressMask|ButtonReleaseMask, GrabModeSync,
GrabModeAsync, root, cursor, CurrentTime);
if (status != GrabSuccess)
{
fprintf(stderr, "Can't grab the mouse!\n");
exit(1);
}
while ((target_win == 0) || (buttons != 0))
{
XAllowEvents(dpy, SyncPointer, CurrentTime);
XWindowEvent(dpy, root, ButtonPressMask|ButtonReleaseMask, &event);
switch (event.type)
{
case ButtonPress:
if (target_win == 0)
{
target_win = event.xbutton.subwindow;
if (target_win == 0) target_win = root;
}
buttons++;
break;
case ButtonRelease:
if (buttons > 0)buttons--;
break;
}
}
XUngrabPointer(dpy, CurrentTime);
return(target_win);
}
Window Get_Window_by_Name(Display *dpy, Window top, char *name)
{
Window *children, dummy;
unsigned int nchildren;
int i;
Window w = 0;
char *window_name;
if (XFetchName(dpy, top, &window_name) && !strcmp(window_name, name)) return(top);
if (!XQueryTree(dpy, top, &dummy, &dummy, &children, &nchildren)) return(0);
for (i=0; i<nchildren; i++)
{
w = Get_Window_by_Name(dpy, children[i], name);
if (w) break;
}
if (children) XFree ((char *)children);
return(w);
}
Window Get_Window_by_PID(Display *dpy, pid_t pid)
{
Window w = 0;
Window root_return;
Window parent_return;
Window *children_return, *children_return1, *children_return2;
unsigned int nchildren_return, nchildren_return1, nchildren_return2;
unsigned i, j, k;
if(window_debug) fprintf(stdout, "Check WINDOWID for pid=%d\n", pid);
Status status = XQueryTree(dpy, DefaultRootWindow(dpy), &root_return,
&parent_return, &children_return, &nchildren_return);
if(children_return)
{
if(window_debug) fprintf(stdout,"XQueryTree found %d child windows in root window\n",
nchildren_return);
for (i = 0; i < nchildren_return; i++)
{
if (pid == WID2PID(dpy, children_return[i]))
{
w = children_return[i];
break;
}
Status status1 = XQueryTree(dpy, children_return[i], &root_return,
&parent_return, &children_return1, &nchildren_return1);
if(children_return1)
{
if(window_debug) fprintf(stdout,"XQueryTree found %d child windows in window %lu(0x%lx)\n",
nchildren_return1, children_return[i], children_return[i]);
for (j = 0; j < nchildren_return1; j++)
{
if (pid == WID2PID(dpy, children_return1[j]))
{
w = children_return1[j];
break;
}
Status status2 = XQueryTree(dpy, children_return1[j], &root_return,
&parent_return, &children_return2, &nchildren_return2);
if(children_return2)
{
if(window_debug) fprintf(stdout,"XQueryTree found %d child windows in window %lu(0x%lx)\n",
nchildren_return2, children_return1[j], children_return1[j]);
for (k = 0; k < nchildren_return2; k++)
{
if (pid == WID2PID(dpy, children_return2[k]))
{
w = children_return2[k];
break;
}
}
}
XFree(children_return2);
}
XFree(children_return1);
}
if(w) break;
}
}
else
{
fprintf(stdout, "No children return!\n");
}
XFree(children_return);
if(!w){
if(window_debug) fprintf(stdout,"for pid=%d not found any window\n",pid);
return 0;
}
else {
if(window_debug) fprintf(stdout, "for pid=%d found some window %lu(0x%lx).\n"
" Interpret it as main application window\n",pid,w,w);
return w;
}
}
void Get_All_Windows(Display *dpy)
{
Window w = 0;
Window root_return;
Window parent_return;
Window *children_return, *children_return1, *children_return2;
unsigned int nchildren_return, nchildren_return1, nchildren_return2;
unsigned i, j, k;
Status status = XQueryTree(dpy, DefaultRootWindow(dpy), &root_return,
&parent_return, &children_return, &nchildren_return);
if(children_return)
{
STACKinit(100);
if(window_debug) fprintf(stdout,"XQueryTree found %d child windows in root window\n",
nchildren_return);
for (i = 0; i < nchildren_return; i++)
{
STACKpush(children_return[i]);
Status status1 = XQueryTree(dpy, children_return[i], &root_return,
&parent_return, &children_return1, &nchildren_return1);
if(children_return1)
{
if(window_debug) fprintf(stdout,"XQueryTree found %d child windows in window %lu(0x%lx)\n",
nchildren_return1, children_return[i], children_return[i]);
for (j = 0; j < nchildren_return1; j++)
{
STACKpush(children_return1[j]);
Status status2 = XQueryTree(dpy, children_return1[j], &root_return,
&parent_return, &children_return2, &nchildren_return2);
if(children_return2)
{
if(window_debug) fprintf(stdout,"XQueryTree found %d child windows in window %lu(0x%lx)\n",
nchildren_return2, children_return1[j], children_return1[j]);
for (k = 0; k < nchildren_return2; k++)
{
STACKpush(children_return2[k]);
}
}
XFree(children_return2);
}
XFree(children_return1);
}
if(w) break;
}
}
else
{
fprintf(stdout, "No children return!\n");
}
XFree(children_return);
}
pid_t WID2PID (Display *dpy, Window w)
{
Atom atom,actual_type;
char *atom_name;
int actual_format;
unsigned long nitems;
unsigned long bytes_after;
unsigned char *prop;
int status;
pid_t pid;
if(wid2pid_debug) fprintf(stdout, "Check PID for wid=%d\n", w);
atom = XInternAtom(dpy, "_NET_WM_PID", True);
atom_name = XGetAtomName (dpy,atom);
status = XGetWindowProperty(
dpy, w, atom, 0, 1024,
False, AnyPropertyType,
&actual_type,
&actual_format, &nitems,
&bytes_after,
&prop
);
if (status!=0)
{
if(wid2pid_debug) fprintf(stderr,"Cannot get _NET_WM_PID for window %lu(0x%lx)", w, w);
return -2;
}
if (! prop)
{
if(wid2pid_debug) fprintf(stderr,"window %lu(0x%lx): No properties\n", w, w);
return -3;
}
pid = prop[1] * 256;
pid += prop[0];
if(wid2pid_debug) fprintf(stdout,"pid of window %lu(0x%lx) = %d\n", w, w, pid);
return pid;
}