commit 0a53089

X11: track mouse deltas

 1@@ -20,6 +20,9 @@ typedef struct {
 2 
 3 	int8_t cur_rel; /* relative cursor */
 4 	int8_t ignore_warp;
 5+	int32_t mouse_x;
 6+	int32_t mouse_y;
 7+	int8_t  mouse_pos_set;
 8 
 9 	XShmSegmentInfo shm;
10 	int8_t          shmat;

 1@@ -303,6 +303,8 @@ static int8_t handle_event(XEvent* xev, MausEvent* ev, Maus* mw)
 2 				ev->type = MAUS_EV_MOUSE_MOTION;
 3 				ev->mouse.motion.x = xev->xmotion.x - cx;
 4 				ev->mouse.motion.y = xev->xmotion.y - cy;
 5+				ev->mouse.motion.dx = ev->mouse.motion.x;
 6+				ev->mouse.motion.dy = ev->mouse.motion.y;
 7 
 8 				if (ev->mouse.motion.x != 0 || ev->mouse.motion.y != 0) {
 9 					be->ignore_warp = 1;
10@@ -318,6 +320,11 @@ static int8_t handle_event(XEvent* xev, MausEvent* ev, Maus* mw)
11 			ev->type = MAUS_EV_MOUSE_MOTION;
12 			ev->mouse.motion.x = xev->xmotion.x;
13 			ev->mouse.motion.y = xev->xmotion.y;
14+			ev->mouse.motion.dx = be->mouse_pos_set ? xev->xmotion.x - be->mouse_x : 0;
15+			ev->mouse.motion.dy = be->mouse_pos_set ? xev->xmotion.y - be->mouse_y : 0;
16+			be->mouse_x = xev->xmotion.x;
17+			be->mouse_y = xev->xmotion.y;
18+			be->mouse_pos_set = 1;
19 			return 1;
20 
21 		case ConfigureNotify:
22@@ -589,6 +596,9 @@ Maus* maus_init(const char* title, int x, int y, int width, int height)
23 	be->win = None;
24 	be->cur_rel = 0;
25 	be->ignore_warp = 0;
26+	be->mouse_x = 0;
27+	be->mouse_y = 0;
28+	be->mouse_pos_set = 0;
29 
30 	mw->frame_time_last = maus_get_time_ns();
31 	mw->title = title;