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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com>
* Copyright 2022 Daniel Kao <daniel.m.kao@gmail.com>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <lib/lib8tion/lib8tion.h>
#include "cirque_pinnacle_gestures.h"
#include "pointing_device.h"
#include "timer.h"
#if defined(CIRQUE_PINNACLE_TAP_ENABLE) || defined(CIRQUE_PINNACLE_CIRCULAR_SCROLL_ENABLE)
static cirque_pinnacle_features_t features = {.tap_enable = true, .circular_scroll_enable = true};
#endif
#ifdef CIRQUE_PINNACLE_TAP_ENABLE
static trackpad_tap_context_t tap;
static report_mouse_t trackpad_tap(report_mouse_t mouse_report, pinnacle_data_t touchData) {
if (touchData.touchDown != tap.touchDown) {
tap.touchDown = touchData.touchDown;
if (!touchData.zValue) {
if (timer_elapsed(tap.timer) < CIRQUE_PINNACLE_TAPPING_TERM && tap.timer != 0) {
mouse_report.buttons = pointing_device_handle_buttons(mouse_report.buttons, true, POINTING_DEVICE_BUTTON1);
pointing_device_set_report(mouse_report);
pointing_device_send();
# if TAP_CODE_DELAY > 0
wait_ms(TAP_CODE_DELAY);
# endif
mouse_report.buttons = pointing_device_handle_buttons(mouse_report.buttons, false, POINTING_DEVICE_BUTTON1);
pointing_device_set_report(mouse_report);
pointing_device_send();
}
}
tap.timer = timer_read();
}
if (timer_elapsed(tap.timer) > (CIRQUE_PINNACLE_TOUCH_DEBOUNCE)) {
tap.timer = 0;
}
return mouse_report;
}
void cirque_pinnacle_enable_tap(bool enable) {
features.tap_enable = enable;
}
#endif
#ifdef CIRQUE_PINNACLE_CIRCULAR_SCROLL_ENABLE
/* To set a trackpad exclusively as scroll wheel: outer_ring_pct = 100, trigger_px = 0, trigger_ang = 0 */
static circular_scroll_context_t scroll = {.config = {.outer_ring_pct = 33,
.trigger_px = 16,
.trigger_ang = 9102, /* 50 degrees */
.wheel_clicks = 18}};
static inline uint16_t atan2_16(int32_t dy, int32_t dx) {
if (dy == 0) {
if (dx >= 0) {
return 0;
} else {
return 32768;
}
}
int32_t abs_y = dy > 0 ? dy : -dy;
int16_t a;
if (dx >= 0) {
a = 8192 - (8192 * (dx - abs_y) / (dx + abs_y));
} else {
a = 24576 - (8192 * (dx + abs_y) / (abs_y - dx));
}
if (dy < 0) {
return -a; // negate if in quad III or IV
}
return a;
}
static circular_scroll_t circular_scroll(pinnacle_data_t touchData) {
circular_scroll_t report = {0, 0, false};
int8_t x, y, wheel_clicks;
uint8_t center = 256 / 2, mag;
int16_t ang, dot, det, opposite_side, adjacent_side;
uint16_t scale = cirque_pinnacle_get_scale();
if (touchData.zValue) {
/*
* Place origin at center of trackpad, treat coordinates as vectors.
* Scale to fixed int8_t size; angles are independent of resolution.
*/
if (scale) {
x = (int8_t)((int32_t)touchData.xValue * 256 / scale - center);
y = (int8_t)((int32_t)touchData.yValue * 256 / scale - center);
} else {
x = 0;
y = 0;
}
/* Check if first touch */
if (!scroll.z) {
report.suppress_touch = false;
/* Check if touch falls within outer ring */
mag = sqrt16(x * x + y * y);
if (mag * 100 / center >= 100 - scroll.config.outer_ring_pct) {
scroll.state = SCROLL_DETECTING;
scroll.x = x;
scroll.y = y;
scroll.mag = mag;
/*
* Decide scroll axis:
* Vertical if started from righ half
* Horizontal if started from left half
* Flipped for left-handed
*/
# if defined(POINTING_DEVICE_ROTATION_90)
scroll.axis = y < 0;
# elif defined(POINTING_DEVICE_ROTATION_180)
scroll.axis = x > 0;
# elif defined(POINTING_DEVICE_ROTATION_270)
scroll.axis = y > 0;
# else
scroll.axis = x < 0;
# endif
}
} else if (scroll.state == SCROLL_DETECTING) {
report.suppress_touch = true;
/* Already detecting scroll, check movement from touchdown location */
mag = sqrt16((x - scroll.x) * (x - scroll.x) + (y - scroll.y) * (y - scroll.y));
if (mag >= scroll.config.trigger_px) {
/*
* Find angle of movement.
* 0 degrees here means movement towards center of circle
*/
dot = scroll.x * x + scroll.y * y;
det = scroll.x * y - scroll.y * x;
opposite_side = abs(det); /* Based on scalar rejection */
adjacent_side = abs(scroll.mag * scroll.mag - abs(dot)); /* Based on scalar projection */
ang = (int16_t)atan2_16(opposite_side, adjacent_side);
if (ang < scroll.config.trigger_ang) {
/* Not a scroll, release coordinates */
report.suppress_touch = false;
scroll.state = NOT_SCROLL;
} else {
/* Scroll detected */
scroll.state = SCROLL_VALID;
}
}
}
if (scroll.state == SCROLL_VALID) {
report.suppress_touch = true;
dot = scroll.x * x + scroll.y * y;
det = scroll.x * y - scroll.y * x;
ang = (int16_t)atan2_16(det, dot);
wheel_clicks = ((int32_t)ang * scroll.config.wheel_clicks) / 65536;
if (wheel_clicks >= 1 || wheel_clicks <= -1) {
if (scroll.config.left_handed) {
if (scroll.axis == 0) {
report.h = -wheel_clicks;
} else {
report.v = wheel_clicks;
}
} else {
if (scroll.axis == 0) {
report.v = -wheel_clicks;
} else {
report.h = wheel_clicks;
}
}
scroll.x = x;
scroll.y = y;
}
}
}
scroll.z = touchData.zValue;
if (!scroll.z) scroll.state = SCROLL_UNINITIALIZED;
return report;
}
void cirque_pinnacle_enable_circular_scroll(bool enable) {
features.circular_scroll_enable = enable;
}
void cirque_pinnacle_configure_circular_scroll(uint8_t outer_ring_pct, uint8_t trigger_px, uint16_t trigger_ang, uint8_t wheel_clicks, bool left_handed) {
scroll.config.outer_ring_pct = outer_ring_pct;
scroll.config.trigger_px = trigger_px;
scroll.config.trigger_ang = trigger_ang;
scroll.config.wheel_clicks = wheel_clicks;
scroll.config.left_handed = left_handed;
}
#endif
bool cirque_pinnacle_gestures(report_mouse_t* mouse_report, pinnacle_data_t touchData) {
bool suppress_mouse_update = false;
#ifdef CIRQUE_PINNACLE_CIRCULAR_SCROLL_ENABLE
circular_scroll_t scroll_report;
if (features.circular_scroll_enable) {
scroll_report = circular_scroll(touchData);
mouse_report->v = scroll_report.v;
mouse_report->h = scroll_report.h;
suppress_mouse_update = scroll_report.suppress_touch;
}
#endif
#ifdef CIRQUE_PINNACLE_TAP_ENABLE
if (features.tap_enable) {
*mouse_report = trackpad_tap(*mouse_report, touchData);
}
#endif
return suppress_mouse_update;
}
|
