Add set slot by touch id utility

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/frame.c b/src/frame.c
index e722adf..061b170 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -205,6 +205,26 @@ int utouch_frame_set_current_slot(utouch_frame_handle fh, int slot)
         return 0;
 }
 
+int utouch_frame_set_current_id(utouch_frame_handle fh, int id)
+{
+        struct utouch_contact *t;
+        int i;
+
+        for (i = 0; i < fh->num_slots; i++) {
+                t = fh->next->slots[i];
+                if (t->id == id)
+                        return utouch_frame_set_current_slot(fh, i);
+        }
+        for (i = 0; i < fh->num_slots; i++) {
+                t = fh->next->slots[i];
+                if (t->id < 0) {
+                        t->id = id;
+                        return utouch_frame_set_current_slot(fh, i);
+                }
+        }
+        return -ENOMEM;
+}
+
 static void transform_slot(struct utouch_contact *slot,
                            const struct utouch_surface *s)
 {