summaryrefslogtreecommitdiff
path: root/keyboards/handwired/tractyl_manuform/tractyl_manuform.c
blob: 033146134d65cd58e50abda046b27b2376f5f082 (plain)
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
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
/* Copyright 2020 Christopher Courtney <drashna@live.com> (@drashna)
 *
 * 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 "tractyl_manuform.h"
#include "transactions.h"
#include <string.h>

#ifdef CONSOLE_ENABLE
#    include "print.h"
#endif  // CONSOLE_ENABLE

#ifdef POINTING_DEVICE_ENABLE
#    ifndef CHARYBDIS_MINIMUM_DEFAULT_DPI
#        define CHARYBDIS_MINIMUM_DEFAULT_DPI 400
#    endif  // CHARYBDIS_MINIMUM_DEFAULT_DPI

#    ifndef CHARYBDIS_DEFAULT_DPI_CONFIG_STEP
#        define CHARYBDIS_DEFAULT_DPI_CONFIG_STEP 200
#    endif  // CHARYBDIS_DEFAULT_DPI_CONFIG_STEP

#    ifndef CHARYBDIS_MINIMUM_SNIPING_DPI
#        define CHARYBDIS_MINIMUM_SNIPING_DPI 200
#    endif  // CHARYBDIS_MINIMUM_SNIPER_MODE_DPI

#    ifndef CHARYBDIS_SNIPING_DPI_CONFIG_STEP
#        define CHARYBDIS_SNIPING_DPI_CONFIG_STEP 100
#    endif  // CHARYBDIS_SNIPING_DPI_CONFIG_STEP

// Fixed DPI for drag-scroll.
#    ifndef CHARYBDIS_DRAGSCROLL_DPI
#        define CHARYBDIS_DRAGSCROLL_DPI 100
#    endif  // CHARYBDIS_DRAGSCROLL_DPI

#    ifndef CHARYBDIS_DRAGSCROLL_BUFFER_SIZE
#        define CHARYBDIS_DRAGSCROLL_BUFFER_SIZE 6
#    endif  // !CHARYBDIS_DRAGSCROLL_BUFFER_SIZE

#    ifndef CHARYBDIS_POINTER_ACCELERATION_FACTOR
#        define CHARYBDIS_POINTER_ACCELERATION_FACTOR 24
#    endif  // !CHARYBDIS_POINTER_ACCELERATION_FACTOR

typedef union {
    uint8_t raw;
    struct {
        uint8_t pointer_default_dpi : 4;  // 16 steps available.
        uint8_t pointer_sniping_dpi : 2;  // 4 steps available.
        bool    is_dragscroll_enabled : 1;
        bool    is_sniping_enabled : 1;
    } __attribute__((packed));
} charybdis_config_t;

static charybdis_config_t g_charybdis_config = {0};

/**
 * \brief Set the value of `config` from EEPROM.
 *
 * Note that `is_dragscroll_enabled` and `is_sniping_enabled` are purposefully
 * ignored since we do not want to persist this state to memory.  In practice,
 * this state is always written to maximize write-performances.  Therefore, we
 * explicitly set them to `false` in this function.
 */
static void read_charybdis_config_from_eeprom(charybdis_config_t* config) {
    config->raw                   = eeconfig_read_kb() & 0xff;
    config->is_dragscroll_enabled = false;
    config->is_sniping_enabled    = false;
}

/**
 * \brief Save the value of `config` to eeprom.
 *
 * Note that all values are written verbatim, including whether drag-scroll
 * and/or sniper mode are enabled.  `read_charybdis_config_from_eeprom(…)`
 * resets these 2 values to `false` since it does not make sense to persist
 * these across reboots of the board.
 */
static void write_charybdis_config_to_eeprom(charybdis_config_t* config) { eeconfig_update_kb(config->raw); }

/** \brief Return the current value of the pointer's default DPI. */
static uint16_t get_pointer_default_dpi(charybdis_config_t* config) { return (uint16_t)config->pointer_default_dpi * CHARYBDIS_DEFAULT_DPI_CONFIG_STEP + CHARYBDIS_MINIMUM_DEFAULT_DPI; }

/** \brief Return the current value of the pointer's sniper-mode DPI. */
static uint16_t get_pointer_sniping_dpi(charybdis_config_t* config) { return (uint16_t)config->pointer_sniping_dpi * CHARYBDIS_SNIPING_DPI_CONFIG_STEP + CHARYBDIS_MINIMUM_SNIPING_DPI; }

/** \brief Set the appropriate DPI for the input config. */
static void maybe_update_pointing_device_cpi(charybdis_config_t* config) {
    if (config->is_dragscroll_enabled) {
        pointing_device_set_cpi(CHARYBDIS_DRAGSCROLL_DPI);
    } else if (config->is_sniping_enabled) {
        pointing_device_set_cpi(get_pointer_sniping_dpi(config));
    } else {
        pointing_device_set_cpi(get_pointer_default_dpi(config));
    }
}

/**
 * \brief Update the pointer's default DPI to the next or previous step.
 *
 * Increases the DPI value if `forward` is `true`, decreases it otherwise.
 * The increment/decrement steps are equal to CHARYBDIS_DEFAULT_DPI_CONFIG_STEP.
 */
static void step_pointer_default_dpi(charybdis_config_t* config, bool forward) {
    config->pointer_default_dpi += forward ? 1 : -1;
    maybe_update_pointing_device_cpi(config);
}

/**
 * \brief Update the pointer's sniper-mode DPI to the next or previous step.
 *
 * Increases the DPI value if `forward` is `true`, decreases it otherwise.
 * The increment/decrement steps are equal to CHARYBDIS_SNIPING_DPI_CONFIG_STEP.
 */
static void step_pointer_sniping_dpi(charybdis_config_t* config, bool forward) {
    config->pointer_sniping_dpi += forward ? 1 : -1;
    maybe_update_pointing_device_cpi(config);
}

uint16_t charybdis_get_pointer_default_dpi(void) { return get_pointer_default_dpi(&g_charybdis_config); }

uint16_t charybdis_get_pointer_sniping_dpi(void) { return get_pointer_sniping_dpi(&g_charybdis_config); }

void charybdis_cycle_pointer_default_dpi_noeeprom(bool forward) { step_pointer_default_dpi(&g_charybdis_config, forward); }

void charybdis_cycle_pointer_default_dpi(bool forward) {
    step_pointer_default_dpi(&g_charybdis_config, forward);
    write_charybdis_config_to_eeprom(&g_charybdis_config);
}

void charybdis_cycle_pointer_sniping_dpi_noeeprom(bool forward) { step_pointer_sniping_dpi(&g_charybdis_config, forward); }

void charybdis_cycle_pointer_sniping_dpi(bool forward) {
    step_pointer_sniping_dpi(&g_charybdis_config, forward);
    write_charybdis_config_to_eeprom(&g_charybdis_config);
}

bool charybdis_get_pointer_sniping_enabled(void) { return g_charybdis_config.is_sniping_enabled; }

void charybdis_set_pointer_sniping_enabled(bool enable) {
    g_charybdis_config.is_sniping_enabled = enable;
    maybe_update_pointing_device_cpi(&g_charybdis_config);
}

bool charybdis_get_pointer_dragscroll_enabled(void) { return g_charybdis_config.is_dragscroll_enabled; }

void charybdis_set_pointer_dragscroll_enabled(bool enable) {
    g_charybdis_config.is_dragscroll_enabled = enable;
    maybe_update_pointing_device_cpi(&g_charybdis_config);
}

void pointing_device_init_kb(void) { maybe_update_pointing_device_cpi(&g_charybdis_config); }

#    ifndef CONSTRAIN_HID
#        define CONSTRAIN_HID(value) ((value) < -127 ? -127 : ((value) > 127 ? 127 : (value)))
#    endif  // !CONSTRAIN_HID

/**
 * \brief Add optional acceleration effect.
 *
 * If `CHARYBDIS_ENABLE_POINTER_ACCELERATION` is defined, add a simple and naive
 * acceleration effect to the provided value.  Return the value unchanged
 * otherwise.
 */
#    ifndef DISPLACEMENT_WITH_ACCELERATION
#        ifdef CHARYBDIS_POINTER_ACCELERATION_ENABLE
#            define DISPLACEMENT_WITH_ACCELERATION(d) (CONSTRAIN_HID(d > 0 ? d * d / CHARYBDIS_POINTER_ACCELERATION_FACTOR + d : -d * d / CHARYBDIS_POINTER_ACCELERATION_FACTOR + d))
#        else  // !CHARYBDIS_POINTER_ACCELERATION_ENABLE
#            define DISPLACEMENT_WITH_ACCELERATION(d) (d)
#        endif  // CHARYBDIS_POINTER_ACCELERATION_ENABLE
#    endif      // !DISPLACEMENT_WITH_ACCELERATION

/**
 * \brief Augment the pointing device behavior.
 *
 * Implement the Charybdis-specific features for pointing devices:
 *   - Drag-scroll
 *   - Sniping
 *   - Acceleration
 */
static void pointing_device_task_charybdis(report_mouse_t* mouse_report) {
    static int16_t scroll_buffer_x = 0;
    static int16_t scroll_buffer_y = 0;
    if (g_charybdis_config.is_dragscroll_enabled) {
#    ifdef CHARYBDIS_DRAGSCROLL_REVERSE_X
        scroll_buffer_x -= mouse_report->x;
#    else
        scroll_buffer_x += mouse_report->x;
#    endif  // CHARYBDIS_DRAGSCROLL_REVERSE_X
#    ifdef CHARYBDIS_DRAGSCROLL_REVERSE_Y
        scroll_buffer_y -= mouse_report->y;
#    else
        scroll_buffer_y += mouse_report->y;
#    endif  // CHARYBDIS_DRAGSCROLL_REVERSE_Y
        mouse_report->x = 0;
        mouse_report->y = 0;
        if (abs(scroll_buffer_x) > CHARYBDIS_DRAGSCROLL_BUFFER_SIZE) {
            mouse_report->h = scroll_buffer_x > 0 ? 1 : -1;
            scroll_buffer_x = 0;
        }
        if (abs(scroll_buffer_y) > CHARYBDIS_DRAGSCROLL_BUFFER_SIZE) {
            mouse_report->v = scroll_buffer_y > 0 ? 1 : -1;
            scroll_buffer_y = 0;
        }
    } else if (!g_charybdis_config.is_sniping_enabled) {
        mouse_report->x = DISPLACEMENT_WITH_ACCELERATION(mouse_report->x);
        mouse_report->y = DISPLACEMENT_WITH_ACCELERATION(mouse_report->y);
    }
}

report_mouse_t pointing_device_task_kb(report_mouse_t mouse_report) {
    pointing_device_task_charybdis(&mouse_report);
    mouse_report = pointing_device_task_user(mouse_report);

    return mouse_report;
}

#    if defined(POINTING_DEVICE_ENABLE) && !defined(NO_CHARYBDIS_KEYCODES)
/** \brief Whether SHIFT mod is enabled. */
static bool has_shift_mod(void) {
#        ifdef NO_ACTION_ONESHOT
    return mod_config(get_mods()) & MOD_MASK_SHIFT;
#        else
    return mod_config(get_mods() | get_oneshot_mods()) & MOD_MASK_SHIFT;
#        endif  // NO_ACTION_ONESHOT
}
#    endif  // POINTING_DEVICE_ENABLE && !NO_CHARYBDIS_KEYCODES

/**
 * \brief Outputs the Charybdis configuration to console.
 *
 * Prints the in-memory configuration structure to console, for debugging.
 * Includes:
 *   - raw value
 *   - drag-scroll: on/off
 *   - sniping: on/off
 *   - default DPI: internal table index/actual DPI
 *   - sniping DPI: internal table index/actual DPI
 */
static void debug_charybdis_config_to_console(charybdis_config_t* config) {
#    ifdef CONSOLE_ENABLE
    dprintf("(charybdis) process_record_kb: config = {\n"
            "\traw = 0x%04X,\n"
            "\t{\n"
            "\t\tis_dragscroll_enabled=%b\n"
            "\t\tis_sniping_enabled=%b\n"
            "\t\tdefault_dpi=0x%02X (%ld)\n"
            "\t\tsniping_dpi=0x%01X (%ld)\n"
            "\t}\n"
            "}\n",
            config->raw, config->is_dragscroll_enabled, config->is_sniping_enabled, config->pointer_default_dpi, get_pointer_default_dpi(config), config->pointer_sniping_dpi, get_pointer_sniping_dpi(config));
#    endif  // CONSOLE_ENABLE
}

bool process_record_kb(uint16_t keycode, keyrecord_t* record) {
    if (!process_record_user(keycode, record)) {
        debug_charybdis_config_to_console(&g_charybdis_config);
        return false;
    }
#    ifndef NO_CHARYBDIS_KEYCODES
    switch (keycode) {
        case POINTER_DEFAULT_DPI_FORWARD:
            if (record->event.pressed) {
                // Step backward if shifted, forward otherwise.
                charybdis_cycle_pointer_default_dpi(/* forward= */ !has_shift_mod());
            }
            break;
        case POINTER_DEFAULT_DPI_REVERSE:
            if (record->event.pressed) {
                // Step forward if shifted, backward otherwise.
                charybdis_cycle_pointer_default_dpi(/* forward= */ has_shift_mod());
            }
            break;
        case POINTER_SNIPING_DPI_FORWARD:
            if (record->event.pressed) {
                // Step backward if shifted, forward otherwise.
                charybdis_cycle_pointer_sniping_dpi(/* forward= */ !has_shift_mod());
            }
            break;
        case POINTER_SNIPING_DPI_REVERSE:
            if (record->event.pressed) {
                // Step forward if shifted, backward otherwise.
                charybdis_cycle_pointer_sniping_dpi(/* forward= */ has_shift_mod());
            }
            break;
        case SNIPING_MODE:
            charybdis_set_pointer_sniping_enabled(record->event.pressed);
            break;
        case SNIPING_MODE_TOGGLE:
            if (record->event.pressed) {
                charybdis_set_pointer_sniping_enabled(!charybdis_get_pointer_sniping_enabled());
            }
            break;
        case DRAGSCROLL_MODE:
            charybdis_set_pointer_dragscroll_enabled(record->event.pressed);
            break;
        case DRAGSCROLL_MODE_TOGGLE:
            if (record->event.pressed) {
                charybdis_set_pointer_dragscroll_enabled(!charybdis_get_pointer_dragscroll_enabled());
            }
            break;
    }
#    endif  // !NO_CHARYBDIS_KEYCODES
#    ifndef MOUSEKEY_ENABLE
    // Simulate mouse keys if full support is not enabled (reduces firmware size
    // while maintaining support for mouse keys).
    if (IS_MOUSEKEY_BUTTON(keycode)) {
        report_mouse_t mouse_report = pointing_device_get_report();
        mouse_report.buttons        = pointing_device_handle_buttons(mouse_report.buttons, record->event.pressed, keycode - KC_MS_BTN1);
        pointing_device_set_report(mouse_report);
        pointing_device_send();
    }
#    endif  // !MOUSEKEY_ENABLE
    debug_charybdis_config_to_console(&g_charybdis_config);
    return true;
}

void eeconfig_init_kb(void) {
    g_charybdis_config.raw = 0;
    write_charybdis_config_to_eeprom(&g_charybdis_config);
    maybe_update_pointing_device_cpi(&g_charybdis_config);
    eeconfig_init_user();
}

void matrix_power_up(void) { pointing_device_task(); }

void charybdis_config_sync_handler(uint8_t initiator2target_buffer_size, const void* initiator2target_buffer, uint8_t target2initiator_buffer_size, void* target2initiator_buffer) {
    if (initiator2target_buffer_size == sizeof(g_charybdis_config)) {
        memcpy(&g_charybdis_config, initiator2target_buffer, sizeof(g_charybdis_config));
    }
}

void keyboard_post_init_kb(void) {
    transaction_register_rpc(RPC_ID_KB_CONFIG_SYNC, charybdis_config_sync_handler);

    keyboard_post_init_user();
}

void housekeeping_task_kb(void) {
    if (is_keyboard_master()) {
        // Keep track of the last state, so that we can tell if we need to propagate to slave
        static charybdis_config_t last_charybdis_config = {0};
        static uint32_t           last_sync             = 0;
        bool                      needs_sync            = false;

        // Check if the state values are different
        if (memcmp(&g_charybdis_config, &last_charybdis_config, sizeof(g_charybdis_config))) {
            needs_sync = true;
            memcpy(&last_charybdis_config, &g_charybdis_config, sizeof(g_charybdis_config));
        }
        // Send to slave every 500ms regardless of state change
        if (timer_elapsed32(last_sync) > 500) {
            needs_sync = true;
        }

        // Perform the sync if requested
        if (needs_sync) {
            if (transaction_rpc_send(RPC_ID_KB_CONFIG_SYNC, sizeof(g_charybdis_config), &g_charybdis_config)) {
                last_sync = timer_read32();
            }
        }
    }
    // no need for user function, is called already
}

#endif  // POINTING_DEVICE_ENABLE

__attribute__((weak)) void matrix_init_sub_kb(void) {}
void                       matrix_init_kb(void) {
#ifdef POINTING_DEVICE_ENABLE
    read_charybdis_config_from_eeprom(&g_charybdis_config);
#endif  // POINTING_DEVICE_ENABLE
    matrix_init_sub_kb();
    matrix_init_user();
}

__attribute__((weak)) void matrix_scan_sub_kb(void) {}
void                       matrix_scan_kb(void) {
    matrix_scan_sub_kb();
    matrix_scan_user();
}