add reverse button rotation

diff --git a/kbdsensor.cpp b/kbdsensor.cpp
index f522412..d73df1c 100644 (file)
--- a/kbdsensor.cpp
+++ b/kbdsensor.cpp
@@ -243,11 +243,19 @@ int SensorPollContext::doPoll(sensors_event_t *data, int count)
                                if (enabled && count > 0)
                                        break;
                        }
-               } else if (iev.type == EV_KEY && iev.code == keys[1] && iev.value) {
-                       if (rotation == ROT_270)
-                               rotation = ROT_0;
-                       else
-                               rotation++;
+               } else if (iev.type == EV_KEY) {
+                       if (iev.code == keys[1] && iev.value) {
+                               if (rotation == ROT_270)
+                                       rotation = ROT_0;
+                               else
+                                       rotation++;
+                               }
+                       if (iev.code == keys[2] && iev.value) {
+                               if (rotation == ROT_0)
+                                       rotation = ROT_270;
+                               else
+                                       rotation--;
+                               }
                        break;
                } else if (iev.type == EV_SW && iev.code == SW_TABLET_MODE) {
                        if (!iev.value)