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Retain brightness with lighting layers (#13025)

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Add guard `RGBLIGHT_LAYERS_RETAIN_VAL` to retain the currently used val
when applying lighting layers.
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Patrick Stadler 2021-07-22 08:46:12 +02:00 committed by GitHub
parent 85128302c8
commit fb9a254a43
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2 changed files with 11 additions and 0 deletions
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4
docs/feature_rgblight.md
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@ -326,6 +326,10 @@ would turn the layer 0 (or 1) on and off again three times when `DEBUG` is press
Normally lighting layers are not shown when RGB Lighting is disabled (e.g. with `RGB_TOG` keycode). If you would like lighting layers to work even when the RGB Lighting is otherwise off, add `#define RGBLIGHT_LAYERS_OVERRIDE_RGB_OFF` to your `config.h`.
### Retain brightness
Usually lighting layers apply their configured brightness once activated. If you would like lighting layers to retain the currently used brightness (as returned by `rgblight_get_val()`), add `#define RGBLIGHT_LAYERS_RETAIN_VAL` to your `config.h`.
## Functions
If you need to change your RGB lighting in code, for example in a macro to change the color whenever you switch layers, QMK provides a set of functions to assist you. See [`rgblight.h`](https://github.com/qmk/qmk_firmware/blob/master/quantum/rgblight/rgblight.h) for the full list, but the most commonly used functions include:

7
quantum/rgblight/rgblight.c
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@ -694,6 +694,9 @@ bool rgblight_get_layer_state(uint8_t layer) {
// Write any enabled LED layers into the buffer
static void rgblight_layers_write(void) {
# ifdef RGBLIGHT_LAYERS_RETAIN_VAL
uint8_t current_val = rgblight_get_val();
# endif
uint8_t i = 0;
// For each layer
for (const rgblight_segment_t *const *layer_ptr = rgblight_layers; i < RGBLIGHT_MAX_LAYERS; layer_ptr++, i++) {
@ -714,7 +717,11 @@ static void rgblight_layers_write(void) {
// Write segment.count LEDs
LED_TYPE *const limit = &led[MIN(segment.index + segment.count, RGBLED_NUM)];
for (LED_TYPE *led_ptr = &led[segment.index]; led_ptr < limit; led_ptr++) {
# ifdef RGBLIGHT_LAYERS_RETAIN_VAL
sethsv(segment.hue, segment.sat, current_val, led_ptr);
# else
sethsv(segment.hue, segment.sat, segment.val, led_ptr);
# endif
}
segment_ptr++;
}