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main.c
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main.c
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#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/XTest.h>
#include <stdio.h>
#include <time.h>
#include <errno.h>
void move_mouse(Display* display, int x, int y){
XTestFakeRelativeMotionEvent(display, x, y, 0);
XFlush(display);
}
void set_mouse(Display* display, int x, int y){
XTestFakeMotionEvent(display, 0, x, y, 0);
XFlush(display);
}
void button_make(Display* display, unsigned int button){
XTestFakeButtonEvent(display, button, True, 0);
XFlush(display);
}
void button_break(Display* display, unsigned int button){
XTestFakeButtonEvent(display, button, False, 0);
XFlush(display);
}
/* msleep(): Sleep for the requested number of milliseconds. */
int msleep(long msec)
{
struct timespec ts;
int res;
if (msec < 0) {
errno = EINVAL;
return -1;
}
ts.tv_sec = msec / 1000;
ts.tv_nsec = (msec % 1000) * 1000000;
do {
res = nanosleep(&ts, &ts);
} while (res && errno == EINTR);
return res;
}
enum Keys {
ArrowLeft = 65361,
ArrowUp = 65362,
ArrowRight = 65363,
ArrowDown = 65364
};
int main(int argc, char **argv){
Display *display = XOpenDisplay(NULL);
// set_mouse(display, 0, 0);
// button_make(display, 1);
// button_break(display, 1);
Window root = DefaultRootWindow(display);
long mask = KeyPressMask | KeyReleaseMask | FocusChangeMask;
Window focus;
int revert;
XComposeStatus comp;
char keyStr[16];
KeySym keySym;
int len;
int isCaptured = 0;
XWindowAttributes winAttrs;
XGetWindowAttributes(display, root, &winAttrs);
// CTRL + ALT + P
int shortc[3] = {};
int arrows[4] = {};
float velocity[4] = {};
int location[2] = {winAttrs.width / 2, winAttrs.height / 2};
int buttons[3] = {};
int scroll[4] = {};
int ctrl = 0;
int shift = 0;
int alt = 0;
XGetInputFocus(display, &focus, &revert);
XSelectInput(display, focus, mask);
XEvent event;
while (1) {
if (XCheckWindowEvent(display, focus, mask, &event)) {
// XNextEvent(display, &event);
// printf("x: %d, y: %d\n", event.xkey.x, event.xkey.y);
// printf("button: %u\n", event.xbutton.button);
switch (event.type) {
case ButtonPress:
printf("button: %u\n", event.xbutton.button);
break;
// Change follow focused window
case FocusOut:
// Get rid of event masks
if (focus != root)
XSelectInput(display, focus, 0);
// Fetch newly focused window
XGetInputFocus (display, &focus, &revert);
if (focus == PointerRoot)
focus = root;
// Set new event listener
XSelectInput(display, focus, mask);
break;
case KeyPress:
len = XLookupString(&event.xkey, keyStr, 16, &keySym, &comp);
printf("PRESS: %s (%lu)\n", keyStr, keySym);
if (keySym == 65507) shortc[0] = 1;
if (keySym == 65513) shortc[1] = 1;
if (keySym == 112 || keySym == 80) shortc[2] = 1;
// Handle arrows
if (keySym == ArrowLeft) arrows[0] = 1;
if (keySym == ArrowUp) arrows[1] = 1;
if (keySym == ArrowRight) arrows[2] = 1;
if (keySym == ArrowDown) arrows[3] = 1;
if (keySym == 65507) ctrl = 1;
if (keySym == 65505) shift = 1;
if (keySym == 65513) alt = 1;
// Handle buttons
if (keySym == 113) buttons[0] = 1;
if (keySym == 101) buttons[1] = 1;
if (keySym == 114) buttons[2] = 1;
// Handle scrolls
if (keySym == 119) scroll[0] = 1;
if (keySym == 115) scroll[1] = 1;
if (keySym == 97) scroll[2] = 1;
if (keySym == 100) scroll[3] = 1;
// if CTRL + ALT + P was hit
if (shortc[0] == 1 && shortc[1] == 1 && shortc[2] == 1) {
printf("Toggle capturing\n");
isCaptured = !isCaptured;
shortc[2] = 0;
if (!isCaptured) {
location[0] = winAttrs.width / 2;
location[1] = winAttrs.height / 2;
for (int i = 0; i < 4; i++)
velocity[i] = 0;
for (int i = 0; i < 4; i++)
buttons[i] = 0;
for (int i = 0; i < 4; i++)
scroll[i] = 0;
ctrl = 0;
shift = 0;
alt = 0;
}
}
break;
case KeyRelease:
len = XLookupString(&event.xkey, keyStr, 16, &keySym, &comp);
// printf("RELEASE: %s (%lu)\n", keyStr, keySym);
if (keySym == 65507) shortc[0] = 0;
if (keySym == 65513) shortc[1] = 0;
if (keySym == 112 || keySym == 80) shortc[2] = 0;
// Handle arrows
if (keySym == ArrowLeft) arrows[0] = 0;
if (keySym == ArrowUp) arrows[1] = 0;
if (keySym == ArrowRight) arrows[2] = 0;
if (keySym == ArrowDown) arrows[3] = 0;
if (keySym == 65507) ctrl = 0;
if (keySym == 65505) shift = 0;
if (keySym == 65513) alt = 0;
// Handle buttons
if (keySym == 113) buttons[0] = 0;
if (keySym == 101) buttons[1] = 0;
if (keySym == 114) buttons[2] = 0;
// Handle scrolls
if (keySym == 119) scroll[0] = 0;
if (keySym == 115) scroll[1] = 0;
if (keySym == 97) scroll[2] = 0;
if (keySym == 100) scroll[3] = 0;
break;
}
continue;
}
if (isCaptured) {
int speed = 10;
const float fraction = 0.7;
if (alt)
speed /= 2;
if (ctrl)
speed /= 4;
if (shift)
speed *= 2;
if (arrows[0]) velocity[0] = 1;
if (arrows[1]) velocity[1] = 1;
if (arrows[2]) velocity[2] = 1;
if (arrows[3]) velocity[3] = 1;
location[0] -= (int)(velocity[0] * speed);
location[1] -= (int)(velocity[1] * speed);
location[0] += (int)(velocity[2] * speed);
location[1] += (int)(velocity[3] * speed);
// for (int i = 0; i < 2; i++) {
// printf("%d, ", location[i]);
// }
// printf("\n");
set_mouse(display, location[0], location[1]);
if (buttons[0]) {
button_make(display, 1);
button_break(display, 1);
buttons[0] = 0;
}
if (buttons[1]) {
button_make(display, 3);
button_break(display, 3);
buttons[1] = 0;
}
if (buttons[2]) {
button_make(display, 2);
button_break(display, 2);
buttons[2] = 0;
}
if (scroll[0]) {
button_make(display, 4);
button_break(display, 4);
}
if (scroll[1]) {
button_make(display, 5);
button_break(display, 5);
}
for (int i = 0; i < 4; i++)
velocity[i] *= fraction;
}
msleep(10);
}
XCloseDisplay(display);
return 0;
}