1 files changed, 41 insertions, 0 deletions

diff --git a/src/gestures-drag.c b/src/gestures-drag.c
index b894bda..253bc9d 100644
--- a/src/gestures-drag.c
+++ b/src/gestures-drag.c
@@ -82,3 +82,44 @@ int gru_drag(struct grail *ge,
         return 1;
 }
 
+int gru_windrag(struct grail *ge,
+                const struct touch_frame *frame)
+{
+        struct gesture_recognizer *gru = ge->gru;
+        struct combo_model *state = &gru->windrag;
+        struct move_model *move = &gru->move;
+        int mask = state->active ? (move->active & fm_mask) : fm_mask;
+        if (!move->multi && !move->single) {
+                if (state->active && out_of_bounds(state, move)) {
+                        gru_end(ge, state->gid, move,
+                                state->prop, state->nprop);
+                        state->active = 0;
+                }
+                return 0;
+        }
+        if (!(move->tickle & mask))
+                return 0;
+        if (!state->active) {
+                if (move->ntouch == 4) {
+                        state->gid = gin_gid_begin(ge, GRAIL_TYPE_MDRAG,
+                                                   PRIO_META, frame);
+                        state->mintouch = 1;
+                        state->maxtouch = 4;
+                        state->active = 1;
+                } else if (move->ntouch == 3) {
+                        state->gid = gin_gid_begin(ge, GRAIL_TYPE_EDRAG,
+                                                   PRIO_ENV, frame);
+                        state->mintouch = 1;
+                        state->maxtouch = 3;
+                        state->active = 1;
+                } else {
+                        return 0;
+                }
+        }
+        if (!move->single && !(move->active & fm_mask))
+                return 0;
+        set_props(state, move);
+        gru_event(ge, state->gid, move, state->prop, state->nprop);
+        return 1;
+}
+