input/tablet: add tool_mode option to set tablet tools as relative input

Closes #4139.

2 files changed, 29 insertions, 6 deletions

diff --git a/sway/input/cursor.c b/sway/input/cursor.c
index 61d75b8a..e47410a5 100644
--- a/sway/input/cursor.c
+++ b/sway/input/cursor.c
@@ -567,14 +567,14 @@ static void handle_tablet_tool_position(struct sway_cursor *cursor,
                         ic->mapped_from_region, &x, &y);
         }
 
-        switch (tool->tablet_v2_tool->wlr_tool->type) {
-        case WLR_TABLET_TOOL_TYPE_LENS:
-        case WLR_TABLET_TOOL_TYPE_MOUSE:
-                wlr_cursor_move(cursor->cursor, input_device->wlr_device, dx, dy);
-                break;
-        default:
+        switch (tool->mode) {
+        case SWAY_TABLET_TOOL_MODE_ABSOLUTE:
                 wlr_cursor_warp_absolute(cursor->cursor, input_device->wlr_device,
                         change_x ? x : NAN, change_y ? y : NAN);
+                break;
+        case SWAY_TABLET_TOOL_MODE_RELATIVE:
+                wlr_cursor_move(cursor->cursor, input_device->wlr_device, dx, dy);
+                break;
         }
 
         double sx, sy;
diff --git a/sway/input/tablet.c b/sway/input/tablet.c
index b74347aa..5f81f772 100644
--- a/sway/input/tablet.c
+++ b/sway/input/tablet.c
@@ -140,6 +140,29 @@ void sway_tablet_tool_configure(struct sway_tablet *tablet,
                 return;
         }
 
+        switch (wlr_tool->type) {
+        case WLR_TABLET_TOOL_TYPE_LENS:
+        case WLR_TABLET_TOOL_TYPE_MOUSE:
+                tool->mode = SWAY_TABLET_TOOL_MODE_RELATIVE;
+                break;
+        default:
+                tool->mode = SWAY_TABLET_TOOL_MODE_ABSOLUTE;
+
+                struct input_config *ic = input_device_get_config(
+                        tablet->seat_device->input_device);
+                if (!ic) {
+                        break;
+                }
+
+                for (int i = 0; i < ic->tools->length; i++) {
+                        struct input_config_tool *tool_config = ic->tools->items[i];
+                        if (tool_config->type == wlr_tool->type) {
+                                tool->mode = tool_config->mode;
+                                break;
+                        }
+                }
+        }
+
         tool->seat = tablet->seat_device->sway_seat;
         tool->tablet = tablet;
         tool->tablet_v2_tool =