Merge pull request #56439 from madmiraal/fix-56428-3.x

[3.x] Fix tablet tilt values returning bad values

platform/x11/os_x11.cpp

@@ -690,7 +690,7 @@ bool OS_X11::refresh_device_info() {
 				if (class_info->number == VALUATOR_ABSX && class_info->mode == XIModeAbsolute) {
 					resolution_x = class_info->resolution;
 					abs_x_min = class_info->min;
-					abs_y_max = class_info->max;
+					abs_x_max = class_info->max;
 					absolute_mode = true;
 				} else if (class_info->number == VALUATOR_ABSY && class_info->mode == XIModeAbsolute) {
 					resolution_y = class_info->resolution;
@@ -704,8 +704,8 @@ bool OS_X11::refresh_device_info() {
 					tilt_x_min = class_info->min;
 					tilt_x_max = class_info->max;
 				} else if (class_info->number == VALUATOR_TILTY && class_info->mode == XIModeAbsolute) {
-					tilt_x_min = class_info->min;
-					tilt_x_max = class_info->max;
+					tilt_y_min = class_info->min;
+					tilt_y_max = class_info->max;
 				}
 			}
 		}
@@ -2452,8 +2452,10 @@ void OS_X11::process_xevents() {
 							Map<int, Vector2>::Element *pen_tilt_x = xi.pen_tilt_x_range.find(device_id);
 							if (pen_tilt_x) {
 								Vector2 pen_tilt_x_range = pen_tilt_x->value();
-								if (pen_tilt_x_range != Vector2()) {
-									xi.tilt.x = ((*values - pen_tilt_x_range[0]) / (pen_tilt_x_range[1] - pen_tilt_x_range[0])) * 2 - 1;
+								if (pen_tilt_x_range[0] != 0 && *values < 0) {
+									xi.tilt.x = *values / -pen_tilt_x_range[0];
+								} else if (pen_tilt_x_range[1] != 0) {
+									xi.tilt.x = *values / pen_tilt_x_range[1];
 								}
 							}
 
@@ -2464,8 +2466,10 @@ void OS_X11::process_xevents() {
 							Map<int, Vector2>::Element *pen_tilt_y = xi.pen_tilt_y_range.find(device_id);
 							if (pen_tilt_y) {
 								Vector2 pen_tilt_y_range = pen_tilt_y->value();
-								if (pen_tilt_y_range != Vector2()) {
-									xi.tilt.y = ((*values - pen_tilt_y_range[0]) / (pen_tilt_y_range[1] - pen_tilt_y_range[0])) * 2 - 1;
+								if (pen_tilt_y_range[0] != 0 && *values < 0) {
+									xi.tilt.y = *values / -pen_tilt_y_range[0];
+								} else if (pen_tilt_y_range[1] != 0) {
+									xi.tilt.y = *values / pen_tilt_y_range[1];
 								}
 							}