1 files changed, 113 insertions, 0 deletions

diff --git a/src/gesture-client.c b/src/gesture-client.c
new file mode 100644
index 0000000..3b8eb5d
--- /dev/null
+++ b/src/gesture-client.c
@@ -0,0 +1,113 @@
+/*****************************************************************************
+ *
+ * grail - Gesture Recognition And Instantiation Library
+ *
+ * Copyright (C) 2010 Canonical Ltd.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *      Henrik Rydberg <rydberg@bitmath.org>
+ *
+ ****************************************************************************/
+
+#include <gesture-client.h>
+#include <gesture-buffer.h>
+#include <malloc.h>
+#include <string.h>
+#include <errno.h>
+
+#define GESTURE_GAP (1000 * 60 * 60)
+
+struct client_impl {
+        enum gesture_state state;
+        touch_time_t begin, end;
+        struct gebuf buf;
+};
+
+int client_init(struct gesture_client *client, void *priv)
+{
+        struct client_impl *x;
+        memset(client, 0, sizeof(*client));
+        x = calloc(DIM_GESTURE_TYPE, sizeof(*x));
+        if (!x)
+                return -ENOMEM;
+        client->impl = x;
+        client->priv = priv;
+        return 0;
+}
+
+void client_flag(struct gesture_client *client,
+                 const struct gesture_flag *flag)
+{
+        if (client->priority[flag->type]) {
+                struct client_impl *x = &client->impl[flag->type];
+                switch(flag->state) {
+                case GS_BEGIN:
+                        x->begin = flag->time;
+                        x->end = flag->time + GESTURE_GAP;
+                        break;
+                case GS_CANCEL:
+                        x->end = x->begin;
+                        break;
+                case GS_END:
+                        x->end = flag->time;
+                        break;
+                }
+                x->state = flag->state;
+        }
+}
+
+void client_event(struct gesture_client *client,
+                  const struct gesture_event *ev)
+{
+        if (client->priority[ev->type]) {
+                struct client_impl *x = &client->impl[ev->type];
+                gebuf_put(&x->buf, ev);
+        }
+}
+
+void client_sync(struct gesture_client *client)
+{
+        struct gesture_event ev;
+        struct client_impl *x = client->impl;
+        int i, prio = 0;
+        for (i = 0; i < DIM_GESTURE_TYPE; i++) {
+                if (x[i].begin != x[i].end) {
+                        if (client->priority[i] > prio)
+                                prio = client->priority[i];
+                }
+        }
+        for (i = 0; i < DIM_GESTURE_TYPE; i++) {
+                if (client->priority[i] < prio) {
+                        gebuf_clear(&x[i].buf);
+                } else if (prio && client->gesture) {
+                        if (x[i].state == GS_END) {
+                                while (!gebuf_empty(&x[i].buf)) {
+                                        gebuf_get(&x[i].buf, &ev);
+                                        client->gesture(client, &ev);
+                                }
+                        }
+                }
+        }
+        for (i = 0; i < DIM_GESTURE_TYPE; i++)
+                if (x[i].state == GS_END)
+                        x[i].begin = x[i].end;
+}
+
+void client_destroy(struct gesture_client *client)
+{
+        free(client->impl);
+        memset(client, 0, sizeof(*client));
+}