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hekate/bdk/libs/lvgl/lv_objx/lv_sw.c
CTCaer 185526d134 Introducing Bootloader Development Kit (BDK) 
BDK will allow developers to use the full collection of drivers,
with limited editing, if any, for making payloads for Nintendo Switch.

Using a single source for everything will also help decoupling
Switch specific code and easily port it to other Tegra X1/X1+ platforms.
And maybe even to lower targets.

Everything is now centrilized into bdk folder.
Every module or project can utilize it by simply including it.

This is just the start and it will continue to improve.
2020-06-14 15:25:21 +03:00

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/**
* @file lv_sw.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_sw.h"
#if USE_LV_SW != 0
/*Testing of dependencies*/
#if USE_LV_SLIDER == 0
#error "lv_sw: lv_slider is required. Enable it in lv_conf.h (USE_LV_SLIDER 1) "
#endif
#include "../lv_themes/lv_theme.h"
#include "../lv_misc/lv_math.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static lv_res_t lv_sw_signal(lv_obj_t * sw, lv_signal_t sign, void * param);
static void lv_sw_anim_to_value(lv_obj_t * sw, int16_t value);
/**********************
* STATIC VARIABLES
**********************/
static lv_signal_func_t ancestor_signal;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a switch objects
* @param par pointer to an object, it will be the parent of the new switch
* @param copy pointer to a switch object, if not NULL then the new object will be copied from it
* @return pointer to the created switch
*/
lv_obj_t * lv_sw_create(lv_obj_t * par, const lv_obj_t * copy)
{
LV_LOG_TRACE("switch create started");
/*Create the ancestor of switch*/
lv_obj_t * new_sw = lv_slider_create(par, copy);
lv_mem_assert(new_sw);
if(new_sw == NULL) return NULL;
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_sw);
/*Allocate the switch type specific extended data*/
lv_sw_ext_t * ext = lv_obj_allocate_ext_attr(new_sw, sizeof(lv_sw_ext_t));
lv_mem_assert(ext);
if(ext == NULL) return NULL;
/*Initialize the allocated 'ext' */
ext->changed = 0;
#if USE_LV_ANIMATION
ext->anim_time = 0;
#endif
ext->style_knob_off = ext->slider.style_knob;
ext->style_knob_on = ext->slider.style_knob;
/*The signal and design functions are not copied so set them here*/
lv_obj_set_signal_func(new_sw, lv_sw_signal);
/*Init the new switch switch*/
if(copy == NULL) {
lv_slider_set_range(new_sw, 0, 1);
lv_obj_set_size(new_sw, 2 * LV_DPI / 3, LV_DPI / 3);
lv_slider_set_knob_in(new_sw, true);
lv_slider_set_range(new_sw, 0, LV_SWITCH_SLIDER_ANIM_MAX);
/*Set the default styles*/
lv_theme_t * th = lv_theme_get_current();
if(th) {
lv_sw_set_style(new_sw, LV_SW_STYLE_BG, th->sw.bg);
lv_sw_set_style(new_sw, LV_SW_STYLE_INDIC, th->sw.indic);
lv_sw_set_style(new_sw, LV_SW_STYLE_KNOB_OFF, th->sw.knob_off);
lv_sw_set_style(new_sw, LV_SW_STYLE_KNOB_ON, th->sw.knob_on);
} else {
/*Let the slider' style*/
}
}
/*Copy an existing switch*/
else {
lv_sw_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
ext->style_knob_off = copy_ext->style_knob_off;
ext->style_knob_on = copy_ext->style_knob_on;
#if USE_LV_ANIMATION
ext->anim_time = copy_ext->anim_time;
#endif
if(lv_sw_get_state(new_sw)) lv_slider_set_style(new_sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_on);
else lv_slider_set_style(new_sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_off);
/*Refresh the style with new signal function*/
lv_obj_refresh_style(new_sw);
}
LV_LOG_INFO("switch created");
return new_sw;
}
/*=====================
* Setter functions
*====================*/
/**
* Turn ON the switch
* @param sw pointer to a switch object
*/
void lv_sw_on(lv_obj_t * sw)
{
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
lv_slider_set_value(sw, LV_SWITCH_SLIDER_ANIM_MAX);
lv_slider_set_style(sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_on);
}
/**
* Turn OFF the switch
* @param sw pointer to a switch object
*/
void lv_sw_off(lv_obj_t * sw)
{
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
lv_slider_set_value(sw, 0);
lv_slider_set_style(sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_off);
}
/**
* Toggle the position of the switch
* @param sw pointer to a switch object
* @return resulting state of the switch.
*/
bool lv_sw_toggle(lv_obj_t *sw) {
bool state = lv_sw_get_state(sw);
if(state) {
lv_sw_off(sw);
}
else {
lv_sw_on(sw);
}
return !state;
}
/**
* Turn ON the switch with an animation
* @param sw pointer to a switch object
*/
void lv_sw_on_anim(lv_obj_t * sw)
{
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
if(lv_sw_get_anim_time(sw) > 0)lv_sw_anim_to_value(sw, LV_SWITCH_SLIDER_ANIM_MAX);
else lv_slider_set_value(sw, LV_SWITCH_SLIDER_ANIM_MAX);
lv_slider_set_style(sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_on);
}
/**
* Turn OFF the switch with an animation
* @param sw pointer to a switch object
*/
void lv_sw_off_anim(lv_obj_t * sw)
{
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
if(lv_sw_get_anim_time(sw) > 0) lv_sw_anim_to_value(sw, 0);
else lv_slider_set_value(sw, 0);
lv_slider_set_style(sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_off);
}
/**
* Toggle the position of the switch with an animation
* @param sw pointer to a switch object
* @return resulting state of the switch.
*/
bool lv_sw_toggle_anim(lv_obj_t *sw) {
bool state = lv_sw_get_state(sw);
if(state) {
lv_sw_off_anim(sw);
}
else {
lv_sw_on_anim(sw);
}
return !state;
}
/**
* Set a style of a switch
* @param sw pointer to a switch object
* @param type which style should be set
* @param style pointer to a style
*/
void lv_sw_set_style(lv_obj_t * sw, lv_sw_style_t type, lv_style_t * style)
{
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
switch(type) {
case LV_SLIDER_STYLE_BG:
lv_slider_set_style(sw, LV_SLIDER_STYLE_BG, style);
break;
case LV_SLIDER_STYLE_INDIC:
lv_bar_set_style(sw, LV_SLIDER_STYLE_INDIC, style);
break;
case LV_SW_STYLE_KNOB_OFF:
ext->style_knob_off = style;
if(lv_sw_get_state(sw) == 0) lv_slider_set_style(sw, LV_SLIDER_STYLE_KNOB, style);
break;
case LV_SW_STYLE_KNOB_ON:
ext->style_knob_on = style;
if(lv_sw_get_state(sw) != 0) lv_slider_set_style(sw, LV_SLIDER_STYLE_KNOB, style);
break;
}
}
void lv_sw_set_anim_time(lv_obj_t *sw, uint16_t anim_time)
{
#if USE_LV_ANIMATION
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
ext->anim_time = anim_time;
#endif
}
/*=====================
* Getter functions
*====================*/
/**
* Get a style of a switch
* @param sw pointer to a switch object
* @param type which style should be get
* @return style pointer to a style
*/
lv_style_t * lv_sw_get_style(const lv_obj_t * sw, lv_sw_style_t type)
{
lv_style_t * style = NULL;
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
switch(type) {
case LV_SW_STYLE_BG:
style = lv_slider_get_style(sw, LV_SLIDER_STYLE_BG);
break;
case LV_SW_STYLE_INDIC:
style = lv_slider_get_style(sw, LV_SLIDER_STYLE_INDIC);
break;
case LV_SW_STYLE_KNOB_OFF:
style = ext->style_knob_off;
break;
case LV_SW_STYLE_KNOB_ON:
style = ext->style_knob_on;
break;
default:
style = NULL;
break;
}
return style;
}
uint16_t lv_sw_get_anim_time(const lv_obj_t *sw)
{
#if USE_LV_ANIMATION
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
return ext->anim_time;
#else
return 0;
#endif
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Signal function of the switch
* @param sw pointer to a switch object
* @param sign a signal type from lv_signal_t enum
* @param param pointer to a signal specific variable
* @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted
*/
static lv_res_t lv_sw_signal(lv_obj_t * sw, lv_signal_t sign, void * param)
{
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
/*Save the current (old) value before slider signal modifies it*/
int16_t old_val;
if(sign == LV_SIGNAL_PRESSING) old_val = ext->slider.drag_value;
else old_val = lv_slider_get_value(sw);
/*Do not let the slider to call the callback. The Switch will do it if required*/
lv_action_t slider_action = ext->slider.action;
ext->slider.action = NULL;
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(sw, sign, param);
if(res != LV_RES_OK) return res;
if(sign == LV_SIGNAL_CLEANUP) {
/*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
}
else if(sign == LV_SIGNAL_PRESSED) {
/*Save the x coordinate of the pressed point to see if the switch was slid*/
lv_indev_t * indev = lv_indev_get_act();
if(indev) {
lv_point_t p;
lv_indev_get_point(indev, &p);
ext->start_x = p.x;
}
ext->slided = 0;
ext->changed = 0;
}
else if(sign == LV_SIGNAL_PRESSING) {
/*See if the switch was slid*/
lv_indev_t * indev = lv_indev_get_act();
if(indev) {
lv_point_t p = {0,0};
lv_indev_get_point(indev, &p);
if(LV_MATH_ABS(p.x - ext->start_x) > LV_INDEV_DRAG_LIMIT) ext->slided = 1;
}
/*If didn't slide then revert the min/max value. So click without slide won't move the switch as a slider*/
if(ext->slided == 0) {
if(lv_sw_get_state(sw)) ext->slider.drag_value = LV_SWITCH_SLIDER_ANIM_MAX;
else ext->slider.drag_value = 0;
}
/*If explicitly changed (by slide) don't need to be toggled on release*/
int16_t threshold = LV_SWITCH_SLIDER_ANIM_MAX / 2;
if((old_val < threshold && ext->slider.drag_value > threshold) ||
(old_val > threshold && ext->slider.drag_value < threshold))
{
ext->changed = 1;
}
}
else if(sign == LV_SIGNAL_PRESS_LOST) {
if(lv_sw_get_state(sw)) {
lv_slider_set_style(sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_on);
#if USE_LV_ANIMATION
lv_sw_anim_to_value(sw, LV_SWITCH_SLIDER_ANIM_MAX);
#endif
}
else {
lv_slider_set_style(sw, LV_SLIDER_STYLE_KNOB, ext->style_knob_off);
#if USE_LV_ANIMATION
lv_sw_anim_to_value(sw, 0);
#endif
}
}
else if(sign == LV_SIGNAL_RELEASED) {
/*If not dragged then toggle the switch*/
if(ext->changed == 0) {
if(lv_sw_get_state(sw)) lv_sw_off_anim(sw);
else lv_sw_on_anim(sw);
if(slider_action != NULL) res = slider_action(sw);
}
/*If the switch was dragged then calculate the new state based on the current position*/
else {
int16_t v = lv_slider_get_value(sw);
if(v > LV_SWITCH_SLIDER_ANIM_MAX / 2) lv_sw_on_anim(sw);
else lv_sw_off_anim(sw);
if(slider_action != NULL) res = slider_action(sw);
}
} else if(sign == LV_SIGNAL_CONTROLL) {
char c = *((char *)param);
if(c == LV_GROUP_KEY_ENTER) {
if(old_val) lv_sw_off_anim(sw);
else lv_sw_on_anim(sw);
if(slider_action) res = slider_action(sw);
} else if(c == LV_GROUP_KEY_UP || c == LV_GROUP_KEY_RIGHT) {
lv_sw_on_anim(sw);
if(slider_action) res = slider_action(sw);
} else if(c == LV_GROUP_KEY_DOWN || c == LV_GROUP_KEY_LEFT) {
lv_sw_off_anim(sw);
if(slider_action) res = slider_action(sw);
}
} else if(sign == LV_SIGNAL_GET_EDITABLE) {
bool * editable = (bool *)param;
*editable = false; /*The ancestor slider is editable the switch is not*/
} else if(sign == LV_SIGNAL_GET_TYPE) {
lv_obj_type_t * buf = param;
uint8_t i;
for(i = 0; i < LV_MAX_ANCESTOR_NUM - 1; i++) { /*Find the last set data*/
if(buf->type[i] == NULL) break;
}
buf->type[i] = "lv_sw";
}
/*Restore the callback*/
if(res == LV_RES_OK) ext->slider.action = slider_action;
return res;
}
static void lv_sw_anim_to_value(lv_obj_t * sw, int16_t value)
{
#if USE_LV_ANIMATION
lv_anim_t a;
lv_sw_ext_t * ext = lv_obj_get_ext_attr(sw);
a.var = sw;
a.start = ext->slider.bar.cur_value;
a.end = value;
a.fp = (lv_anim_fp_t)lv_slider_set_value;
a.path = lv_anim_path_linear;
a.end_cb = NULL;
a.act_time = 0;
a.time = lv_sw_get_anim_time(sw);
a.playback = 0;
a.playback_pause = 0;
a.repeat = 0;
a.repeat_pause = 0;
lv_anim_create(&a);
#endif
}
#endif
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