1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*****************************************************************************
*
* 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 "grail-inserter.h"
#include <malloc.h>
#include <string.h>
#include <errno.h>
static const int MAX_GESTURE_ID = 0xfff;
int gin_init(struct grail *ge)
{
struct gesture_inserter *x;
x = calloc(1, sizeof(*x));
if (!x)
return -ENOMEM;
ge->gin = x;
return 0;
}
void gin_destroy(struct grail *ge)
{
free(ge->gin);
ge->gin = NULL;
}
void gin_frame_begin(struct grail *ge, grail_time_t time)
{
struct gesture_inserter *gin = ge->gin;
gin->time = time;
}
static void send_event(struct grail *ge, struct slot_state *s,
const struct gesture_event *ev)
{
struct grail_event gev;
int i;
if (!ge->gesture)
return;
gev.type = s->type;
gev.id = s->id;
gev.status = s->status;
gev.pos.x = s->x;
gev.pos.y = s->x;
gev.time = ev->time;
memcpy(gev.prop, ev->prop, DIM_GRAIL_PROP * sizeof(gev.prop[0]));
for (i = 0; i < s->nclient; i++) {
gev.client_id = s->client_id[i];
ge->gesture(ge, &gev);
}
}
void gin_frame_end(struct grail *ge, grail_mask_t *filtered)
{
struct gesture_inserter *gin = ge->gin;
struct gesture_event ev;
grail_mask_t span[DIM_SLOT_BYTES];
int i, slot, spanned = 0;
memset(filtered, 0, DIM_EV_TYPE_BYTES);
memset(span, 0, sizeof(span));
for (slot = 0; slot < DIM_SLOT; slot++) {
struct slot_state *s = &gin->state[slot];
if (!grail_get_mask(gin->used, slot))
continue;
if (!s->nclient)
gin_gesture_discard(gin, slot);
}
for (slot = 0; slot < DIM_SLOT; slot++) {
struct slot_state *s = &gin->state[slot];
if (!grail_get_mask(gin->used, slot))
continue;
for (i = 0; i < DIM_SLOT_BYTES; i++) {
span[i] |= s->span[i];
spanned += !!span[i];
}
while (!gebuf_empty(&s->buf)) {
gebuf_get(&s->buf, &ev);
send_event(ge, s, &ev);
}
if (s->status == GRAIL_STATUS_BEGIN)
s->status = GRAIL_STATUS_UPDATE;
}
if (spanned)
grail_set_mask(filtered, EV_ABS);
}
int gin_gesture_begin(struct grail *ge, const struct touch_frame *frame,
int type, int x, int y, const grail_mask_t *span)
{
struct grail_client_info info[DIM_CLIENT];
struct grail_coord coord[DIM_CLIENT];
struct gesture_inserter *gin = ge->gin;
struct slot_state *s;
int i, slot, nc, ncoord = 0;
for (slot = 0; slot < DIM_SLOT; slot++)
if (!grail_get_mask(gin->used, slot))
break;
if (slot >= DIM_SLOT)
return -1;
s = &gin->state[slot];
s->type = type;
s->id = gin->gestureid++ & MAX_GESTURE_ID;
s->status = GRAIL_STATUS_BEGIN;
s->x = x;
s->y = y;
s->nclient = 0;
if (ge->get_clients) {
grail_mask_t tps[DIM_GRAIL_TYPE_BYTES];
memset(tps, 0, sizeof(tps));
grail_set_mask(tps, type);
for (i = 0; i < DIM_SLOT; i++) {
const struct touch *t = &frame->touch[i];
if (!grail_get_mask(span, i))
continue;
coord[ncoord].x = t->prop[TP_POS_X];
coord[ncoord].y = t->prop[TP_POS_Y];
ncoord++;
}
nc = ge->get_clients(ge, info, DIM_CLIENT, coord, ncoord, tps);
for (i = 0; i < nc; i++) {
if (!grail_get_mask(info[i].mask, type))
continue;
s->client_id[s->nclient] = info[i].id;
s->nclient++;
}
}
memcpy(s->span, span, sizeof(s->span));
gebuf_clear(&s->buf);
grail_set_mask(gin->used, slot);
return slot;
}
void gin_gesture_end(struct gesture_inserter *gin, int slot)
{
struct slot_state *s = &gin->state[slot];
s->status = GRAIL_STATUS_END;
grail_clear_mask(gin->used, slot);
}
void gin_gesture_discard(struct gesture_inserter *gin, int slot)
{
struct slot_state *s = &gin->state[slot];
gebuf_clear(&s->buf);
gin_gesture_end(gin, slot);
}
void gin_gesture_end_all(struct gesture_inserter *gin)
{
int slot;
for (slot = 0; slot < DIM_SLOT; slot++)
gin_gesture_end(gin, slot);
}
void gin_gesture_event(struct gesture_inserter *gin, int slot,
const grail_prop_t *prop)
{
struct slot_state *s = &gin->state[slot];
struct gesture_event ev;
ev.time = gin->time;
memcpy(ev.prop, prop, sizeof(ev.prop));
gebuf_put(&s->buf, &ev);
}
|
