diff options
Diffstat (limited to 'gpu-screen-recorder-overlay-daemon/main.c')
-rw-r--r-- | gpu-screen-recorder-overlay-daemon/main.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/gpu-screen-recorder-overlay-daemon/main.c b/gpu-screen-recorder-overlay-daemon/main.c deleted file mode 100644 index 18234c2..0000000 --- a/gpu-screen-recorder-overlay-daemon/main.c +++ /dev/null @@ -1,116 +0,0 @@ -#include <stdio.h> -#include <signal.h> -#include <stdbool.h> -#include <sys/wait.h> -#include <unistd.h> - -#include <X11/Xlib.h> -#include <X11/keysym.h> - -bool exec_program(const char **args, pid_t *process_id) { - *process_id = -1; - - /* 1 argument */ - if(args[0] == NULL) - return false; - - pid_t pid = vfork(); - if(pid == -1) { - perror("Failed to vfork"); - return false; - } else if(pid == 0) { /* child */ - execvp(args[0], (char* const*)args); - perror("execvp"); - _exit(127); - } else { /* parent */ - *process_id = pid; - } - - return true; -} - -static int ignore_xerror(Display *display, XErrorEvent *ee) { - (void)display; - (void)ee; - return 0; -} - -static void sigterm_handler(int dummy) { - (void)dummy; -} - -static const KeySym toggle_overlay_key = XK_Z; -static unsigned int toggle_overlay_modifiers = Mod1Mask; - -static void grab_keys(Display *display) { - unsigned int numlockmask = 0; - KeyCode numlock_keycode = XKeysymToKeycode(display, XK_Num_Lock); - XModifierKeymap *modmap = XGetModifierMapping(display); - for(int i = 0; i < 8; ++i) { - for(int j = 0; j < modmap->max_keypermod; ++j) { - if(modmap->modifiermap[i * modmap->max_keypermod + j] == numlock_keycode) - numlockmask = (1 << i); - } - } - XFreeModifiermap(modmap); - - XErrorHandler prev_error_handler = XSetErrorHandler(ignore_xerror); - - Window root_window = DefaultRootWindow(display); - unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask }; - for(int i = 0; i < 4; ++i) { - XGrabKey(display, XKeysymToKeycode(display, toggle_overlay_key), toggle_overlay_modifiers|modifiers[i], root_window, False, GrabModeAsync, GrabModeAsync); - } - - XSync(display, False); - XSetErrorHandler(prev_error_handler); -} - -int main(void) { - Display *display = XOpenDisplay(NULL); - if(!display) { - fprintf(stderr, "Error: XOpenDisplay failed\n"); - return 1; - } - - grab_keys(display); - const KeyCode overlay_keycode = XKeysymToKeycode(display, toggle_overlay_key); - - XSetErrorHandler(ignore_xerror); - /* Killing gpu-screen-recorder with SIGTERM also gives us SIGTERM. We want to ignore that as that has no meaning here */ - signal(SIGTERM, sigterm_handler); - - pid_t overlay_pid = -1; - - fprintf(stderr, "gsr overlay is now ready, waiting for inputs. Press alt+z to show/hide the overlay\n"); - - XEvent xev; - for(;;) { - XNextEvent(display, &xev); - if(xev.type == KeyPress && xev.xkey.keycode == overlay_keycode) { - if(overlay_pid != -1) { - int status; - if(waitpid(overlay_pid, &status, WNOHANG) == 0) { - kill(overlay_pid, SIGINT); - int status; - if(waitpid(overlay_pid, &status, 0) == -1) { - perror("waitpid failed"); - /* Ignore... */ - } - overlay_pid = -1; - continue; - } else { - overlay_pid = -1; - } - } - - if(overlay_pid == -1) { - fprintf(stderr, "launch overlay\n"); - // TODO: window_with_input_focus - const char *args[] = { "gsr-overlay", NULL }; - exec_program(args, &overlay_pid); - } - } - } - return 0; -} |