1 files changed, 62 insertions, 0 deletions

diff --git a/include/mtstate.h b/include/mtstate.h
new file mode 100644
index 0000000..ac0b18d
--- /dev/null
+++ b/include/mtstate.h
@@ -0,0 +1,62 @@
+/***************************************************************************
+ *
+ * Multitouch X driver
+ * Copyright (C) 2008 Henrik Rydberg <rydberg@euromail.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ **************************************************************************/
+
+#ifndef MTSTATE_H
+#define MTSTATE_H
+
+#include "hwstate.h"
+
+struct MTFinger {
+        struct FingerData hw;
+        int id, thumb;
+};
+
+struct MTState {
+        struct MTFinger finger[DIM_FINGER];
+        int nfinger;
+        unsigned button;
+        mstime_t evtime;
+};
+
+void init_mtstate(struct MTState *s);
+void extract_mtstate(struct MTState *s,
+                     const struct HWState *hs,
+                     const struct Capabilities *caps);
+void output_mtstate(const struct MTState *s);
+
+const struct MTFinger *find_finger(const struct MTState *s, int id);
+
+
+static inline int center_dist2(const struct MTFinger *a,
+                               const struct Capabilities *caps)
+{
+        return dist2(a->hw.position_x - get_cap_xmid(caps),
+                     a->hw.position_y - get_cap_ymid(caps));
+}
+
+static inline int center_maxdist2(const struct Capabilities *caps)
+{
+        return dist2(caps->abs_position_x.maximum - get_cap_xmid(caps),
+                     caps->abs_position_y.maximum - get_cap_ymid(caps));
+}
+
+#endif
+