github-code/lvgl
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

minor fixes

Browse Source
This commit is contained in:
Gabor Kiss-Vamosi
2021-03-19 18:03:08 +01:00
parent a4b66d550f
commit d83fa19703
8 changed files with 476 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/core/lv_obj_style.c
View File

@@ -358,7 +358,7 @@ _lv_style_state_cmp_t _lv_obj_style_state_compare(lv_obj_t * obj, lv_state_t sta
else if(lv_style_get_prop(style, LV_STYLE_CONTENT_OPA, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD; else if(lv_style_get_prop(style, LV_STYLE_CONTENT_OPA, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else { else {
if(res != _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD) { if(res != _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD) {
if(res != _LV_STYLE_STATE_CMP_SAME && (obj->styles[i].part == LV_PART_MAIN || obj->styles[i].part != LV_PART_SCROLLBAR)) { if((obj->styles[i].part == LV_PART_MAIN || obj->styles[i].part == LV_PART_SCROLLBAR)) {
res = _LV_STYLE_STATE_CMP_DIFF_REDRAW; res = _LV_STYLE_STATE_CMP_DIFF_REDRAW;
} }
} }

417
src/extra/themes/basic/lv_theme_basic.c Normal file
View File

@@ -0,0 +1,417 @@
/**
* @file lv_theme_basic.c
*
*/
/*********************
* INCLUDES
*********************/
#include "../../../lvgl.h" /*To see all the widgets*/
#if LV_USE_THEME_BASIC
#include "lv_theme_basic.h"
#include "../../../misc/lv_gc.h"
#if defined(LV_GC_INCLUDE)
#include LV_GC_INCLUDE
#endif /*LV_ENABLE_GC*/
/*********************
* DEFINES
*********************/
#define COLOR_WHITE lv_color_white()
#define COLOR_LIGHT lv_color_grey_lighten_3()
#define COLOR_MID lv_color_grey_lighten_1()
#define COLOR_DARK lv_color_grey()
#define COLOR_DIM lv_color_grey_darken_2()
#define PAD_DEF LV_DPX(10)
/**********************
* TYPEDEFS
**********************/
typedef struct {
lv_style_t scr;
lv_style_t light;
lv_style_t dark;
lv_style_t scrollbar;
lv_style_t pressed;
lv_style_t disabled;
lv_style_t pad_zero;
} my_theme_styles_t;
/**********************
* STATIC PROTOTYPES
**********************/
static void style_init_reset(lv_style_t * style);
static void theme_apply(lv_theme_t * th, lv_obj_t * obj);
/**********************
* STATIC VARIABLES
**********************/
static my_theme_styles_t * styles;
static lv_theme_t theme;
static bool inited;
/**********************
* MACROS
**********************/
/**********************
* STATIC FUNCTIONS
**********************/
static lv_color_t dark_color_filter_cb(const lv_color_filter_dsc_t * f, lv_color_t c, lv_opa_t opa)
{
LV_UNUSED(f);
return lv_color_darken(c, opa);
}
static lv_color_t grey_filter_cb(const lv_color_filter_dsc_t * f, lv_color_t color, lv_opa_t opa)
{
LV_UNUSED(f);
return lv_color_mix(lv_color_white(), color, opa);
}
static void style_init(void)
{
style_init_reset(&styles->scrollbar);
lv_style_set_bg_opa(&styles->scrollbar, LV_OPA_COVER);
lv_style_set_bg_color(&styles->scrollbar, lv_color_grey_darken_2());
lv_style_set_size(&styles->scrollbar, PAD_DEF / 2);
style_init_reset(&styles->scr);
lv_style_set_bg_opa(&styles->scr, LV_OPA_COVER);
lv_style_set_bg_color(&styles->scr, COLOR_WHITE);
lv_style_set_text_color(&styles->scr, COLOR_DIM);
lv_style_set_pad_row(&styles->scr, PAD_DEF / 2);
lv_style_set_pad_column(&styles->scr, PAD_DEF / 2);
style_init_reset(&styles->light);
lv_style_set_bg_opa(&styles->light, LV_OPA_COVER);
lv_style_set_bg_color(&styles->light, COLOR_LIGHT);
lv_style_set_border_color(&styles->light, COLOR_MID);
lv_style_set_border_width(&styles->light, 1);
lv_style_set_pad_all(&styles->light, PAD_DEF);
lv_style_set_pad_gap(&styles->light, PAD_DEF / 2);
lv_style_set_line_width(&styles->light, LV_DPX(2));
lv_style_set_line_color(&styles->light, COLOR_MID);
lv_style_set_arc_width(&styles->light, LV_DPX(2));
lv_style_set_arc_color(&styles->light, COLOR_MID);
style_init_reset(&styles->dark);
lv_style_set_bg_opa(&styles->dark, LV_OPA_COVER);
lv_style_set_bg_color(&styles->dark, COLOR_DARK);
lv_style_set_border_color(&styles->dark, COLOR_DIM);
lv_style_set_border_width(&styles->dark, 1);
lv_style_set_pad_all(&styles->dark, PAD_DEF);
lv_style_set_pad_gap(&styles->dark, PAD_DEF / 2);
lv_style_set_line_width(&styles->dark, LV_DPX(2));
lv_style_set_line_color(&styles->dark, COLOR_DIM);
lv_style_set_arc_width(&styles->dark, LV_DPX(2));
lv_style_set_arc_color(&styles->dark, COLOR_DIM);
static lv_color_filter_dsc_t dark_filter;
lv_color_filter_dsc_init(&dark_filter, dark_color_filter_cb);
style_init_reset(&styles->pressed);
lv_style_set_color_filter_dsc(&styles->pressed, &dark_filter);
lv_style_set_color_filter_opa(&styles->pressed, 35);
static lv_color_filter_dsc_t grey_filter;
lv_color_filter_dsc_init(&grey_filter, grey_filter_cb);
style_init_reset(&styles->disabled);
lv_style_set_color_filter_dsc(&styles->disabled, &grey_filter);
lv_style_set_color_filter_opa(&styles->disabled, LV_OPA_70);
style_init_reset(&styles->pad_zero);
lv_style_set_pad_all(&styles->pad_zero, 0);
lv_style_set_pad_gap(&styles->pad_zero, 0);
}
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_theme_t * lv_theme_basic_init(lv_disp_t * disp)
{
/*This trick is required only to avoid the garbage collection of
*styles' data if LVGL is used in a binding (e.g. Micropython)
*In a general case styles could be in simple `static lv_style_t my_style...` variables*/
if(!inited) {
LV_GC_ROOT(_lv_theme_default_styles) = lv_mem_alloc(sizeof(my_theme_styles_t));
styles = (my_theme_styles_t *)LV_GC_ROOT(_lv_theme_default_styles);
}
theme.disp = disp;
theme.palette_primary = LV_COLOR_PALETTE_NONE;
theme.palette_secondary = LV_COLOR_PALETTE_NONE;
theme.font_small = LV_FONT_DEFAULT;
theme.font_normal = LV_FONT_DEFAULT;
theme.font_large = LV_FONT_DEFAULT;
theme.apply_cb = theme_apply;
style_init();
inited = true;
if(disp == NULL || lv_disp_get_theme(disp) == &theme) lv_obj_report_style_change(NULL);
return (lv_theme_t *)&theme;
}
static void theme_apply(lv_theme_t * th, lv_obj_t * obj)
{
LV_UNUSED(th);
if(lv_obj_get_parent(obj) == NULL) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->scr);
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
return;
}
if(lv_obj_check_type(obj, &lv_obj_class)) {
#if LV_USE_TABVIEW
lv_obj_t * parent = lv_obj_get_parent(obj);
/*Tabview content area*/
if(lv_obj_check_type(parent, &lv_tabview_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
return;
}
/*Tabview pages*/
else if(lv_obj_check_type(lv_obj_get_parent(parent), &lv_tabview_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
return;
}
#endif
#if LV_USE_WIN
/*Header*/
if(lv_obj_get_child_id(obj) == 0 && lv_obj_check_type(lv_obj_get_parent(obj), &lv_win_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
return;
}
/*Content*/
else if(lv_obj_get_child_id(obj) == 1 && lv_obj_check_type(lv_obj_get_parent(obj), &lv_win_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
return;
}
#endif
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
}
#if LV_USE_BTN
else if(lv_obj_check_type(obj, &lv_btn_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->dark);
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_PRESSED, &styles->pressed);
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DISABLED, &styles->disabled);
}
#endif
#if LV_USE_BTNMATRIX
else if(lv_obj_check_type(obj, &lv_btnmatrix_class)) {
#if LV_USE_MSGBOX
if(lv_obj_check_type(lv_obj_get_parent(obj), &lv_msgbox_class)) {
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_PRESSED, &styles->pressed);
return;
}
#endif
#if LV_USE_TABVIEW
if(lv_obj_check_type(lv_obj_get_parent(obj), &lv_tabview_class)) {
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_PRESSED, &styles->pressed);
return;
}
#endif
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_DEFAULT, &styles->dark);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_PRESSED, &styles->pressed);
}
#endif
#if LV_USE_BAR
else if(lv_obj_check_type(obj, &lv_bar_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->pad_zero);
lv_obj_add_style(obj, LV_PART_INDICATOR, LV_STATE_DEFAULT, &styles->dark);
}
#endif
#if LV_USE_SLIDER
else if(lv_obj_check_type(obj, &lv_slider_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->pad_zero);
lv_obj_add_style(obj, LV_PART_INDICATOR, LV_STATE_DEFAULT, &styles->dark);
}
#endif
#if LV_USE_TABLE
else if(lv_obj_check_type(obj, &lv_table_class)) {
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_PRESSED, &styles->pressed);
}
#endif
#if LV_USE_CHECKBOX
else if(lv_obj_check_type(obj, &lv_checkbox_class)) {
lv_obj_add_style(obj, LV_PART_INDICATOR, LV_STATE_DISABLED, &styles->disabled);
lv_obj_add_style(obj, LV_PART_INDICATOR, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_INDICATOR, LV_STATE_CHECKED, &styles->dark);
lv_obj_add_style(obj, LV_PART_INDICATOR, LV_STATE_PRESSED, &styles->pressed);
}
#endif
#if LV_USE_SWITCH
else if(lv_obj_check_type(obj, &lv_switch_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->pad_zero);
lv_obj_add_style(obj, LV_PART_INDICATOR, LV_STATE_DEFAULT, &styles->dark);
lv_obj_add_style(obj, LV_PART_KNOB, LV_STATE_DEFAULT, &styles->dark);
lv_obj_add_style(obj, LV_PART_KNOB, LV_STATE_DEFAULT, &styles->pad_zero);
}
#endif
#if LV_USE_CHART
else if(lv_obj_check_type(obj, &lv_chart_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_TICKS, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_CURSOR, LV_STATE_DEFAULT, &styles->light);
}
#endif
#if LV_USE_ROLLER
else if(lv_obj_check_type(obj, &lv_roller_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_SELECTED, LV_STATE_DEFAULT, &styles->dark);
}
#endif
#if LV_USE_DROPDOWN
else if(lv_obj_check_type(obj, &lv_dropdown_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_PRESSED, &styles->pressed);
}
else if(lv_obj_check_type(obj, &lv_dropdown_list_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
lv_obj_add_style(obj, LV_PART_SELECTED, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_SELECTED, LV_STATE_CHECKED, &styles->dark);
lv_obj_add_style(obj, LV_PART_SELECTED, LV_STATE_PRESSED, &styles->pressed);
}
#endif
#if LV_USE_ARC
else if(lv_obj_check_type(obj, &lv_arc_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_INDICATOR, LV_STATE_DEFAULT, &styles->dark);
lv_obj_add_style(obj, LV_PART_INDICATOR, LV_STATE_DEFAULT, &styles->pad_zero);
lv_obj_add_style(obj, LV_PART_KNOB, LV_STATE_DEFAULT, &styles->dark);
}
#endif
#if LV_USE_METER
else if(lv_obj_check_type(obj, &lv_meter_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
}
#endif
#if LV_USE_TEXTAREA
else if(lv_obj_check_type(obj, &lv_textarea_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
lv_obj_add_style(obj, LV_PART_CURSOR, LV_STATE_FOCUSED, &styles->dark);
lv_obj_add_style(obj, LV_PART_TEXTAREA_PLACEHOLDER, LV_STATE_DEFAULT, &styles->light);
}
#endif
#if LV_USE_CALENDAR
else if(lv_obj_check_type(obj, &lv_calendar_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_PRESSED, &styles->light);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_PRESSED, &styles->pressed);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_DISABLED, &styles->disabled);
}
#endif
#if LV_USE_KEYBOARD
else if(lv_obj_check_type(obj, &lv_keyboard_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_ITEMS, LV_STATE_PRESSED, &styles->pressed);
}
#endif
#if LV_USE_LIST
else if(lv_obj_check_type(obj, &lv_list_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
return;
}
else if(lv_obj_check_type(obj, &lv_list_text_class)) {
}
else if(lv_obj_check_type(obj, &lv_list_btn_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->dark);
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_PRESSED, &styles->pressed);
}
#endif
#if LV_USE_MSGBOX
else if(lv_obj_check_type(obj, &lv_msgbox_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
return;
}
#endif
#if LV_USE_SPINBOX
else if(lv_obj_check_type(obj, &lv_spinbox_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_CURSOR, LV_STATE_FOCUSED, &styles->dark);
}
#endif
#if LV_USE_TILEVIEW
else if(lv_obj_check_type(obj, &lv_tileview_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->scr);
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
}
else if(lv_obj_check_type(obj, &lv_tileview_tile_class)) {
lv_obj_add_style(obj, LV_PART_SCROLLBAR, LV_STATE_DEFAULT, &styles->scrollbar);
}
#endif
#if LV_USE_COLORWHEEL
else if(lv_obj_check_type(obj, &lv_colorwheel_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
lv_obj_add_style(obj, LV_PART_KNOB, LV_STATE_DEFAULT, &styles->light);
}
#endif
#if LV_USE_LED
else if(lv_obj_check_type(obj, &lv_led_class)) {
lv_obj_add_style(obj, LV_PART_MAIN, LV_STATE_DEFAULT, &styles->light);
}
#endif
}
/**********************
* STATIC FUNCTIONS
**********************/
static void style_init_reset(lv_style_t * style)
{
if(inited) lv_style_reset(style);
else lv_style_init(style);
}
#endif

49
src/extra/themes/basic/lv_theme_basic.h Normal file
View File

@@ -0,0 +1,49 @@
/**
* @file lv_theme_basic.h
*
*/
#ifndef LV_THEME_BASIC_H
#define LV_THEME_BASIC_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../../../core/lv_obj.h"
#if LV_USE_THEME_BASIC
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize the theme
* @param disp pointer to display to attach the theme
* @return a pointer to reference this theme later
*/
lv_theme_t * lv_theme_basic_init(lv_disp_t * disp);
/**********************
* MACROS
**********************/
#endif
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_THEME_BASIC_H*/

1
src/extra/themes/lv_themes.h
View File

@@ -14,6 +14,7 @@ extern "C" {
* INCLUDES * INCLUDES
*********************/ *********************/
#include "default/lv_theme_default.h" #include "default/lv_theme_default.h"
#include "basic/lv_theme_basic.h"
/********************* /*********************
* DEFINES * DEFINES

1
src/misc/lv_color.h
View File

@@ -276,6 +276,7 @@ typedef struct _lv_color_filter_dsc_t {
typedef enum { typedef enum {
LV_COLOR_PALETTE_NONE,
LV_COLOR_PALETTE_RED, LV_COLOR_PALETTE_RED,
LV_COLOR_PALETTE_PINK, LV_COLOR_PALETTE_PINK,
LV_COLOR_PALETTE_PURPLE, LV_COLOR_PALETTE_PURPLE,

2
src/misc/lv_style.c
View File

@@ -235,7 +235,7 @@ lv_style_value_t lv_style_prop_get_default(lv_style_prop_t prop)
value.ptr = LV_FONT_DEFAULT; value.ptr = LV_FONT_DEFAULT;
break; break;
case LV_STYLE_SIZE: case LV_STYLE_SIZE:
value.num = 10; value.num = 5;
break; break;
default: default:
value.ptr = NULL; value.ptr = NULL;

5
src/widgets/lv_checkbox.c
View File

@@ -145,7 +145,10 @@ static void lv_checkbox_event(lv_obj_t * obj, lv_event_t e)
res = lv_obj_event_base(MY_CLASS, obj, e); res = lv_obj_event_base(MY_CLASS, obj, e);
if(res != LV_RES_OK) return; if(res != LV_RES_OK) return;
if (e == LV_EVENT_GET_SELF_SIZE) { if (e == LV_EVENT_PRESSED || e == LV_EVENT_RELEASED) {
lv_obj_invalidate(obj);
}
else if (e == LV_EVENT_GET_SELF_SIZE) {
lv_point_t * p = lv_event_get_param(); lv_point_t * p = lv_event_get_param();
lv_checkbox_t * cb = (lv_checkbox_t *)obj; lv_checkbox_t * cb = (lv_checkbox_t *)obj;

6
src/widgets/lv_switch.c
View File

@@ -101,13 +101,11 @@ static void lv_switch_event(lv_obj_t * obj, lv_event_t e)
lv_coord_t knob_bottom = lv_obj_get_style_pad_bottom(obj, LV_PART_KNOB); lv_coord_t knob_bottom = lv_obj_get_style_pad_bottom(obj, LV_PART_KNOB);
/*The smaller size is the knob diameter*/ /*The smaller size is the knob diameter*/
lv_coord_t knob_size = LV_MIN(lv_obj_get_width(obj), lv_obj_get_height(obj)) >> 1; lv_coord_t knob_size = LV_MAX4(knob_left, knob_right, knob_bottom, knob_top);
knob_size += LV_MAX(LV_MAX(knob_left, knob_right), LV_MAX(knob_bottom, knob_top));
knob_size += 2; /*For rounding error*/ knob_size += 2; /*For rounding error*/
knob_size += lv_obj_calculate_ext_draw_size(obj, LV_PART_KNOB); knob_size += lv_obj_calculate_ext_draw_size(obj, LV_PART_KNOB);
knob_size = (knob_size - lv_obj_get_height(obj)) / 2; // knob_size = (knob_size - lv_obj_get_height(obj)) / 2;
lv_coord_t * s = lv_event_get_param(); lv_coord_t * s = lv_event_get_param();
*s = LV_MAX(*s, knob_size); *s = LV_MAX(*s, knob_size);