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// Copyright 2021 Victor Toni (@vitoni)
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <stdint.h>
#include <stdbool.h>
/**
* States reflecting the state of the keyboard.
* Dependeing on these states various effects can set for the RGB matrix.
*/
enum states {
REGULAR //!< when in regular use
#if defined(RGB_IDLE_TIMEOUT)
,IDLE_FADE_OUT //!< when started idling
,IDLE //!< when idling
#endif
#if defined(RGB_FADE_IN) || defined(RGB_IDLE_TIMEOUT)
,FADE_IN //!< when starting initially or before going back to REGULAR
#endif
#if defined(RGB_DISABLE_WITH_FADE_OUT)
,FADE_OUT //!< before supending
#endif
,SUSPENDED //!< expecting to be suspended by RGB_MATRIX_TIMEOUT any time
};
/**
* @brief Scales down `g_rgb_timer` so that it can be used for RGB effects.
* @details Usually these calculations aredone internally by some RGB effects.
This method exposed to scaling so that all effects to have same timebase. If `rgb_matrix_config.speed` all effects are affected the same.
* @param[in] factor The factor can be used to speed up some operations in relation to others.
* @return scaled down timer taking into account the given factor
* @see g_rgb_timer
* @see rgb_matrix_config.speed
*/
uint8_t rgb_time_2_scale_w_factor(const uint8_t factor);
/**
* @brief Scales down `g_rgb_timer` so that it can be used for RGB effects.
* @return scaled down timer
* @see rgb_time_2_scale_w_factor()
*/
uint8_t rgb_time_2_scale(void);
/**
* @brief Inverse function to calculate time required to execute `timer` steps.
* @details This method allows calculation of the time needed to execute N `timer`steps.
Usefull when using a scaled down time but requiring the time needed to perform these steps.
* @param[in] scaled_time scaled down timer to inverse to time
* @return time corresponding to scaled down time
* @see rgb_time_2_scale()
*/
uint16_t scale_2_rgb_time(const uint8_t scaled_time);
/**
* @brief Convenience method to eventually skip the value part when setting HSV.
* @details When setting HSV this includes the value/brightness.
As changing brightness might interfer with fading or breathing effects,
this method can skip the value part of HSV (depending on the preprocessor flag: RGB_FADE_IN).
* @param[in] hue Hue
* @param[in] sat Saturation
* @param[in] hue Value (brightness)
* @see rgb_matrix_sethsv_noeeprom()
*/
void rgb_matrix_sethsv_noeeprom_user(const uint16_t hue, const uint8_t sat, const uint8_t val);
#if defined(RGB_FADE_IN) || defined(RGB_DISABLE_WITH_FADE_OUT) || defined(RGB_IDLE_TIMEOUT)
# if defined(RGB_MATRIX_MAXIMUM_BRIGHTNESS)
# if (RGB_MATRIX_MAXIMUM_BRIGHTNESS) < 1
# error "RGB_MATRIX_MAXIMUM_BRIGHTNESS must not be less than ONE"
# endif
# if UINT8_MAX < (RGB_MATRIX_MAXIMUM_BRIGHTNESS)
# error "RGB_MATRIX_MAXIMUM_BRIGHTNESS must not be larger than UINT8_MAX"
# endif
# else
# define RGB_MATRIX_MAXIMUM_BRIGHTNESS 200
# endif
#endif
#if defined(RGB_FADE_IN) || defined(RGB_IDLE_TIMEOUT)
/**
* @brief Calculates the time offset required by fade in.
* @details Using an arbitrary timer any point on the sine curve might be pointed to.
* The offset is calculated so that
* a) the point is at the lowest point in the curve and the curve is raising
* b) the point is near the current brightness (eg. fade in might be called while fading out and the lowest value has not yet been reached).
* @param[in] time Current time usually represented by a(usually scaled) timer
* @return Offset required so that time matches the current brightness
*/
uint8_t calc_fade_in_offset(const uint8_t time);
/**
* @brief Increases value/brightness until reaching RGB_MATRIX_MAXIMUM_BRIGHTNESS based on given timer.
* @param[in] time A (usually scaled) timer
* @return Returns `true` if RGB_MATRIX_MAXIMUM_BRIGHTNESS has been reached, `false` otherwise.
*/
bool fade_in(const uint8_t time);
#endif
#if defined(RGB_DISABLE_WITH_FADE_OUT)
# if !defined(RGB_MATRIX_TIMEOUT)
# warning "RGB_DISABLE_WITH_FADE_OUT expects RGB_MATRIX_TIMEOUT to be defined"
# endif
#endif
#if defined(RGB_DISABLE_WITH_FADE_OUT) || defined(RGB_IDLE_TIMEOUT)
/**
* @brief Calculates the time offset required by fade out.
* @details Using an arbitrary timer any point on the Sinus curve might be pointed to.
* The offest is calculated so that
* a) the point is at the highest point in the curve and the curve is failing
* b) the point is near the current brightness (eg. fade out might be called while on breath effect).
* @param[in] time Current time usually represented by a(usually scaled) timer
* @return Offset required so that time matches the current brightness
*/
uint8_t calc_fade_out_offset(const uint8_t time);
#endif
#if defined(RGB_DISABLE_WITH_FADE_OUT)
/**
* @brief Decreases value/brightness until reaching 0 based on given timer.
* @param[in] time A (usually scaled) timer
* @return Returns `true` if 0 has been reached, `false` otherwise.
*/
bool fade_out(const uint8_t time);
#endif
#if defined(RGB_IDLE_TIMEOUT)
# if RGB_IDLE_TIMEOUT < 0
# error "RGB_IDLE_TIMEOUT must not be less than ZERO"
# endif
# if !defined(RGB_IDLE_MINIMUM_BRIGHTNESS)
// minimum brightness when idling
# define RGB_IDLE_MINIMUM_BRIGHTNESS (RGB_MATRIX_MAXIMUM_BRIGHTNESS/5)
# endif
# if RGB_IDLE_MINIMUM_BRIGHTNESS < 0
# error "RGB_IDLE_MINIMUM_BRIGHTNESS must not be less than ZERO"
# endif // RGB_IDLE_MINIMUM_BRIGHTNESS < 0
# if RGB_MATRIX_MAXIMUM_BRIGHTNESS <= RGB_IDLE_MINIMUM_BRIGHTNESS
# error "RGB_IDLE_MINIMUM_BRIGHTNESS must be less than RGB_MATRIX_MAXIMUM_BRIGHTNESS"
# endif // RGB_MATRIX_MAXIMUM_BRIGHTNESS <= RGB_IDLE_MINIMUM_BRIGHTNESS
/**
* @brief Decreases value/brightness until reaching `RGB_IDLE_MINIMUM_BRIGHTNESS` based on given timer.
* @param[in] time A (usually scaled) timer
* @return Returns `true` if `RGB_IDLE_MINIMUM_BRIGHTNESS` has been reached, `false` otherwise.
*/
bool idle_fade_out(const uint8_t time);
#if defined(RGB_IDLE_BREATHE)
# if !defined(RGB_IDLE_MAXIMUM_BRIGHTNESS)
// maximum brightness when idling
# define RGB_IDLE_MAXIMUM_BRIGHTNESS (RGB_MATRIX_MAXIMUM_BRIGHTNESS*3/5)
# endif
# if !(0 <= RGB_IDLE_MAXIMUM_BRIGHTNESS)
# error "RGB_IDLE_MINIMUM_BRIGHTNESS must not be less than ZERO, was: " RGB_IDLE_MAXIMUM_BRIGHTNESS
# endif // RGB_IDLE_MAXIMUM_BRIGHTNESS < 0
# if !(RGB_IDLE_MINIMUM_BRIGHTNESS < RGB_IDLE_MAXIMUM_BRIGHTNESS)
# error "RGB_IDLE_MINIMUM_BRIGHTNESS must be less than RGB_IDLE_MAXIMUM_BRIGHTNESS"
# endif // RGB_IDLE_MAXIMUM_BRIGHTNESS <= RGB_IDLE_MINIMUM_BRIGHTNESS
# if !(RGB_IDLE_MAXIMUM_BRIGHTNESS <= RGB_MATRIX_MAXIMUM_BRIGHTNESS)
# error "RGB_IDLE_MAXIMUM_BRIGHTNESS must be less than or equal to RGB_MATRIX_MAXIMUM_BRIGHTNESS"
# endif // RGB_MATRIX_MAXIMUM_BRIGHTNESS <= RGB_IDLE_MAXIMUM_BRIGHTNESS
/**
* @brief Changes value/brightness to create a breathing effect based on given timer.
* @details Brightness will breathe in the range starting from `RGB_IDLE_MINIMUM_BRIGHTNESS` to `RGB_IDLE_MAXIMUM_BRIGHTNESS`.
* @param[in] time A (usually scaled) timer
*/
void idle_breathe(const uint8_t time);
#endif // RGB_IDLE_BREATHE
#endif // RGB_IDLE_TIMEOUT
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