diff options
Diffstat (limited to 'quantum')
| -rw-r--r-- | quantum/dynamic_macro.h | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/quantum/dynamic_macro.h b/quantum/dynamic_macro.h new file mode 100644 index 000000000..a3ad61bc7 --- /dev/null +++ b/quantum/dynamic_macro.h @@ -0,0 +1,226 @@ +/* Author: Wojciech Siewierski < wojciech dot siewierski at onet dot pl > */ +#ifndef DYNAMIC_MACROS_H +#define DYNAMIC_MACROS_H + +#include "action_layer.h" + +#ifndef DYNAMIC_MACRO_SIZE +/* May be overridden with a custom value. Be aware that the effective + * macro length is half of this value: each keypress is recorded twice + * because of the down-event and up-event. This is not a bug, it's the + * intended behavior. */ +#define DYNAMIC_MACRO_SIZE 256 +#endif + +/* DYNAMIC_MACRO_RANGE must be set as the last element of user's + * "planck_keycodes" enum prior to including this header. This allows + * us to 'extend' it. + */ +enum dynamic_macro_keycodes { + DYN_REC_START1 = DYNAMIC_MACRO_RANGE, + DYN_REC_START2, + DYN_MACRO_PLAY1, + DYN_MACRO_PLAY2, +}; + +/* Blink the LEDs to notify the user about some event. */ +void dynamic_macro_led_blink(void) +{ + backlight_toggle(); + _delay_ms(100); + backlight_toggle(); +} + +/** + * Start recording of the dynamic macro. + * + * @param[out] macro_pointer The new macro buffer iterator. + * @param[in] macro_buffer The macro buffer used to initialize macro_pointer. + */ +void dynamic_macro_record_start( + keyrecord_t **macro_pointer, keyrecord_t *macro_buffer) +{ + dynamic_macro_led_blink(); + + clear_keyboard(); + layer_clear(); + *macro_pointer = macro_buffer; +} + +/** + * Play the dynamic macro. + * + * @param macro_buffer[in] The beginning of the macro buffer being played. + * @param macro_end[in] The element after the last macro buffer element. + * @param direction[in] Either +1 or -1, which way to iterate the buffer. + */ +void dynamic_macro_play( + keyrecord_t *macro_buffer, keyrecord_t *macro_end, int8_t direction) +{ + uint32_t saved_layer_state = layer_state; + + clear_keyboard(); + layer_clear(); + + while (macro_buffer != macro_end) { + process_record(macro_buffer); + macro_buffer += direction; + } + + clear_keyboard(); + + layer_state = saved_layer_state; +} + +/** + * Record a single key in a dynamic macro. + * + * @param macro_pointer[in,out] The current buffer position. + * @param macro_end2[in] The end of the other macro which shouldn't be overwritten. + * @param direction[in] Either +1 or -1, which way to iterate the buffer. + * @param record[in] The current keypress. + */ +void dynamic_macro_record_key( + keyrecord_t **macro_pointer, + keyrecord_t *macro_end2, + int8_t direction, + keyrecord_t *record) +{ + if (*macro_pointer + direction != macro_end2) { + **macro_pointer = *record; + *macro_pointer += direction; + } else { + /* Notify about the end of buffer. The blinks are paired + * because they should happen on both down and up events. */ + backlight_toggle(); + } +} + +/** + * End recording of the dynamic macro. Essentially just update the + * pointer to the end of the macro. + */ +void dynamic_macro_record_end(keyrecord_t *macro_pointer, keyrecord_t **macro_end) +{ + dynamic_macro_led_blink(); + + *macro_end = macro_pointer; +} + +/* Handle the key events related to the dynamic macros. Should be + * called from process_record_user() like this: + * + * bool process_record_user(uint16_t keycode, keyrecord_t *record) { + * if (!process_record_dynamic_macro(keycode, record)) { + * return false; + * } + * <...THE REST OF THE FUNCTION...> + * } + */ +bool process_record_dynamic_macro(uint16_t keycode, keyrecord_t *record) +{ + /* Both macros use the same buffer but read/write on different + * ends of it. + * + * Macro1 is written left-to-right starting from the beginning of + * the buffer. + * + * Macro2 is written right-to-left starting from the end of the + * buffer. + * + * ¯o_buffer macro_end + * v v + * +------------------------------------------------------------+ + * |>>>>>> MACRO1 >>>>>>| |<<<<<<<<<<<<< MACRO2 <<<<<<<<<<<<<| + * +------------------------------------------------------------+ + * ^ ^ + * r_macro_end r_macro_buffer + * + * During the recording when one macro encounters the end of the + * other macro, the recording is stopped. Apart from this, there + * are no arbitrary limits for the macros' length in relation to + * each other: for example one can either have two medium sized + * macros or one long macro and one short macro. Or even one empty + * and one using the whole buffer. + */ + static keyrecord_t macro_buffer[DYNAMIC_MACRO_SIZE]; + + /* Pointer to the first buffer element after the first macro. + * Initially points to the very beginning of the buffer since the + * macro is empty. */ + static keyrecord_t *macro_end = macro_buffer; + + /* The other end of the macro buffer. Serves as the beginning of + * the second macro. */ + static keyrecord_t *const r_macro_buffer = macro_buffer + DYNAMIC_MACRO_SIZE - 1; + + /* Like macro_end but for the second macro. */ + static keyrecord_t *r_macro_end = r_macro_buffer; + + /* A persistent pointer to the current macro position (iterator) + * used during the recording. */ + static keyrecord_t *macro_pointer = NULL; + + /* 0 - no macro is being recorded right now + * 1,2 - either macro 1 or 2 is being recorded */ + static uint8_t macro_id = 0; + + if (macro_id == 0) { + /* No macro recording in progress. */ + if (!record->event.pressed) { + switch (keycode) { + case DYN_REC_START1: + dynamic_macro_record_start(¯o_pointer, macro_buffer); + macro_id = 1; + return false; + case DYN_REC_START2: + dynamic_macro_record_start(¯o_pointer, r_macro_buffer); + macro_id = 2; + return false; + case DYN_MACRO_PLAY1: + dynamic_macro_play(macro_buffer, macro_end, +1); + return false; + case DYN_MACRO_PLAY2: + dynamic_macro_play(r_macro_buffer, r_macro_end, -1); + return false; + } + } + } else { + /* A macro is being recorded right now. */ + switch (keycode) { + case MO(_DYN): + /* Use the layer key used to access the macro recording as + * a stop button. */ + if (record->event.pressed) { /* Ignore the initial release + * just after the recoding + * starts. */ + switch (macro_id) { + case 1: + dynamic_macro_record_end(macro_pointer, ¯o_end); + break; + case 2: + dynamic_macro_record_end(macro_pointer, &r_macro_end); + break; + } + macro_id = 0; + } + return false; + default: + /* Store the key in the macro buffer and process it normally. */ + switch (macro_id) { + case 1: + dynamic_macro_record_key(¯o_pointer, r_macro_end, +1, record); + break; + case 2: + dynamic_macro_record_key(¯o_pointer, macro_end, -1, record); + break; + } + return true; + break; + } + } + + return true; +} + +#endif |