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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2013
*
* Licensed 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <stdint.h>
#include <string.h>
#include <sys/types.h>
#include <sys/time.h>
#include <signal.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/Xrandr.h>
static int
process_randr(Display *disp, Window win, int event_base, XEvent *ev)
{
XRRScreenChangeNotifyEvent *rr_screen_change_notify;
switch (ev->type - event_base)
{
case RRScreenChangeNotify:
rr_screen_change_notify = (XRRScreenChangeNotifyEvent *) ev;
printf("RRScreenChangeNotify: width %d height %d\n",
rr_screen_change_notify->width,
rr_screen_change_notify->height);
break;
}
return 0;
}
int
main(int argc, char **argv)
{
XEvent ev;
Display *disp;
Window win;
Window root_window;
Screen *screen;
int screenNumber;
int eventMask;
int white;
int black;
int rr_event_base;
int rr_error_base;
int ver_maj;
int ver_min;
int cont;
disp = XOpenDisplay(0);
if (disp == 0)
{
printf("error opening display\n");
return 1;
}
screenNumber = DefaultScreen(disp);
white = WhitePixel(disp, screenNumber);
black = BlackPixel(disp, screenNumber);
screen = ScreenOfDisplay(disp, screenNumber);
root_window = RootWindowOfScreen(screen);
eventMask = StructureNotifyMask;
XSelectInput(disp, root_window, eventMask);
win = XCreateSimpleWindow(disp, root_window, 50, 50, 250, 250,
0, black, white);
XMapWindow(disp, win);
eventMask = StructureNotifyMask | VisibilityChangeMask;
XSelectInput(disp, win, eventMask);
eventMask = KeyPressMask | KeyReleaseMask | ButtonPressMask |
ButtonReleaseMask | VisibilityChangeMask |
FocusChangeMask | StructureNotifyMask |
PointerMotionMask | ExposureMask | PropertyChangeMask;
XSelectInput(disp, win, eventMask);
if (!XRRQueryExtension(disp, &rr_event_base, &rr_error_base))
{
printf("error randr\n");
return 1;
}
XRRQueryVersion(disp, &ver_maj, &ver_min);
printf("randr version %d %d\n", ver_maj, ver_min);
XRRSelectInput(disp, win, RRScreenChangeNotifyMask);
cont = 1;
while (cont)
{
XNextEvent(disp, &ev);
switch (ev.type)
{
case ButtonPress:
cont = 0;
break;
case ClientMessage:
printf("ClientMessage\n");
break;
case ConfigureNotify:
if (ev.xconfigure.window == root_window)
{
printf("ConfigureNotify for root window\n");
}
break;
default:
if ((ev.type >= rr_event_base) &&
(ev.type < rr_event_base + RRNumberEvents))
{
printf("randr\n");
process_randr(disp, win, rr_event_base, &ev);
}
break;
}
}
return 0;
}
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