1 files changed, 45 insertions, 6 deletions

diff --git a/src/multitouch.c b/src/multitouch.c
index 99807b9..11f1e19 100644
--- a/src/multitouch.c
+++ b/src/multitouch.c
@@ -120,20 +120,59 @@ static int device_close(LocalDevicePtr local)
 
 ////////////////////////////////////////////////////////////////////////////
 
+static void tickle_button(LocalDevicePtr local, int id)
+{
+        xf86PostButtonEvent(local->dev, FALSE, id, 1, 0, 0);
+        xf86PostButtonEvent(local->dev, FALSE, id, 0, 0, 0);
+}
+
+////////////////////////////////////////////////////////////////////////////
+
 static void handle_gestures(LocalDevicePtr local,
-                            const struct Gestures *gs)
+                            const struct Gestures *gs,
+                            const struct Capabilities *caps)
 {
+        static int vscroll, hscroll;
         int i;
-        if (GETBIT(gs->type, GS_MOVE)) {
-                xf86PostMotionEvent(local->dev, 0, 0, 2, gs->dx, gs->dy);
-                //xf86Msg(X_INFO, "motion: %d %d\n", gs->dx, gs->dy);
-        }
         for (i = 0; i < gs->nbt; i++) {
                 xf86PostButtonEvent(local->dev, FALSE,
                                     gs->btix[i], gs->btval[i],
                                     0, 0);
                 xf86Msg(X_INFO, "button: %d %d\n", gs->btix[i], gs->btval[i]);
         }
+        if (GETBIT(gs->type, GS_MOVE)) {
+                xf86PostMotionEvent(local->dev, 0, 0, 2,
+                                    gs->dx, gs->dy);
+                xf86Msg(X_INFO, "motion: %d %d\n", gs->dx, gs->dy);
+        }
+        if (GETBIT(gs->type, GS_VSCROLL)) {
+                int vstep = 0.03 * (caps->abs_position_y.maximum -
+                                    caps->abs_position_y.minimum);
+                vscroll += gs->dy;
+                while (vscroll > vstep) {
+                        tickle_button(local, 5);
+                        vscroll -= vstep;
+                }
+                while (vscroll < -vstep) {
+                        tickle_button(local, 4);
+                        vscroll += vstep;
+                }
+                xf86Msg(X_INFO, "vscroll: %d\n", gs->dy);
+        }
+        if (GETBIT(gs->type, GS_HSCROLL)) {
+                int hstep = 0.1 * (caps->abs_position_x.maximum -
+                                   caps->abs_position_x.minimum);
+                hscroll += gs->dx;
+                while (hscroll > hstep) {
+                        tickle_button(local, 6);
+                        hscroll -= hstep;
+                }
+                while (hscroll < -hstep) {
+                        tickle_button(local, 7);
+                        hscroll += hstep;
+                }
+                xf86Msg(X_INFO, "hscroll: %d\n", gs->dx);
+        }
 }
 
 ////////////////////////////////////////////////////////////////////////////
@@ -146,7 +185,7 @@ static void read_input(LocalDevicePtr local)
         while (read_synchronized_event(mt, local->fd)) {
                 parse_event(mt);
                 extract_gestures(&gs, mt);
-                handle_gestures(local, &gs);
+                handle_gestures(local, &gs, &mt->caps);
         }
 }