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/**
* @file lv_cb.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_checkbox.h"
#if LV_USE_CHECKBOX != 0
#include "../../misc/lv_assert.h"
#include "../../misc/lv_text_ap.h"
#include "../../core/lv_group.h"
#include "../../draw/lv_draw.h"
#include "../../stdlib/lv_string.h"
/*********************
* DEFINES
*********************/
#define MY_CLASS &lv_checkbox_class
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_checkbox_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_checkbox_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_checkbox_event(const lv_obj_class_t * class_p, lv_event_t * e);
static void lv_checkbox_draw(lv_event_t * e);
/**********************
* STATIC VARIABLES
**********************/
const lv_obj_class_t lv_checkbox_class = {
.constructor_cb = lv_checkbox_constructor,
.destructor_cb = lv_checkbox_destructor,
.event_cb = lv_checkbox_event,
.width_def = LV_SIZE_CONTENT,
.height_def = LV_SIZE_CONTENT,
.group_def = LV_OBJ_CLASS_GROUP_DEF_TRUE,
.instance_size = sizeof(lv_checkbox_t),
.base_class = &lv_obj_class,
.name = "checkbox",
};
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_obj_t * lv_checkbox_create(lv_obj_t * parent)
{
LV_LOG_INFO("begin");
lv_obj_t * obj = lv_obj_class_create_obj(MY_CLASS, parent);
lv_obj_class_init_obj(obj);
return obj;
}
/*=====================
* Setter functions
*====================*/
void lv_checkbox_set_text(lv_obj_t * obj, const char * txt)
{
lv_checkbox_t * cb = (lv_checkbox_t *)obj;
if(NULL != txt) {
size_t len;
#if LV_USE_ARABIC_PERSIAN_CHARS
len = _lv_text_ap_calc_bytes_count(txt) + 1;
#else
len = lv_strlen(txt) + 1;
#endif
if(!cb->static_txt) cb->txt = lv_realloc(cb->txt, len);
else cb->txt = lv_malloc(len);
LV_ASSERT_MALLOC(cb->txt);
if(NULL == cb->txt) return;
#if LV_USE_ARABIC_PERSIAN_CHARS
_lv_text_ap_proc(txt, cb->txt);
#else
lv_strcpy(cb->txt, txt);
#endif
cb->static_txt = 0;
}
lv_obj_refresh_self_size(obj);
lv_obj_invalidate(obj);
}
void lv_checkbox_set_text_static(lv_obj_t * obj, const char * txt)
{
lv_checkbox_t * cb = (lv_checkbox_t *)obj;
if(!cb->static_txt) lv_free(cb->txt);
cb->txt = (char *)txt;
cb->static_txt = 1;
lv_obj_refresh_self_size(obj);
lv_obj_invalidate(obj);
}
/*=====================
* Getter functions
*====================*/
const char * lv_checkbox_get_text(const lv_obj_t * obj)
{
lv_checkbox_t * cb = (lv_checkbox_t *)obj;
return cb->txt;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_checkbox_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
LV_TRACE_OBJ_CREATE("begin");
lv_checkbox_t * cb = (lv_checkbox_t *)obj;
#if LV_WIDGETS_HAS_DEFAULT_VALUE
cb->txt = (char *)"Check box";
cb->static_txt = 1;
#else
cb->txt = (char *)"";
cb->static_txt = 1;
#endif
lv_obj_add_flag(obj, LV_OBJ_FLAG_CLICKABLE);
lv_obj_add_flag(obj, LV_OBJ_FLAG_CHECKABLE);
lv_obj_add_flag(obj, LV_OBJ_FLAG_SCROLL_ON_FOCUS);
lv_obj_remove_flag(obj, LV_OBJ_FLAG_SCROLLABLE);
LV_TRACE_OBJ_CREATE("finished");
}
static void lv_checkbox_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
LV_TRACE_OBJ_CREATE("begin");
lv_checkbox_t * cb = (lv_checkbox_t *)obj;
if(!cb->static_txt) {
lv_free(cb->txt);
cb->txt = NULL;
}
LV_TRACE_OBJ_CREATE("finished");
}
static void lv_checkbox_event(const lv_obj_class_t * class_p, lv_event_t * e)
{
LV_UNUSED(class_p);
lv_result_t res;
/*Call the ancestor's event handler*/
res = lv_obj_event_base(MY_CLASS, e);
if(res != LV_RESULT_OK) return;
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * obj = lv_event_get_target(e);
if(code == LV_EVENT_GET_SELF_SIZE) {
lv_point_t * p = lv_event_get_param(e);
lv_checkbox_t * cb = (lv_checkbox_t *)obj;
const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
int32_t font_h = lv_font_get_line_height(font);
int32_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
int32_t letter_space = lv_obj_get_style_text_letter_space(obj, LV_PART_MAIN);
lv_point_t txt_size;
lv_text_get_size(&txt_size, cb->txt, font, letter_space, line_space, LV_COORD_MAX, LV_TEXT_FLAG_NONE);
int32_t bg_colp = lv_obj_get_style_pad_column(obj, LV_PART_MAIN);
int32_t marker_leftp = lv_obj_get_style_pad_left(obj, LV_PART_INDICATOR);
int32_t marker_rightp = lv_obj_get_style_pad_right(obj, LV_PART_INDICATOR);
int32_t marker_topp = lv_obj_get_style_pad_top(obj, LV_PART_INDICATOR);
int32_t marker_bottomp = lv_obj_get_style_pad_bottom(obj, LV_PART_INDICATOR);
lv_point_t marker_size;
marker_size.x = font_h + marker_leftp + marker_rightp;
marker_size.y = font_h + marker_topp + marker_bottomp;
p->x = marker_size.x + txt_size.x + bg_colp;
p->y = LV_MAX(marker_size.y, txt_size.y);
}
else if(code == LV_EVENT_REFR_EXT_DRAW_SIZE) {
int32_t * s = lv_event_get_param(e);
int32_t m = lv_obj_calculate_ext_draw_size(obj, LV_PART_INDICATOR);
*s = LV_MAX(*s, m);
}
else if(code == LV_EVENT_DRAW_MAIN) {
lv_checkbox_draw(e);
}
}
static void lv_checkbox_draw(lv_event_t * e)
{
lv_obj_t * obj = lv_event_get_target(e);
lv_checkbox_t * cb = (lv_checkbox_t *)obj;
lv_layer_t * layer = lv_event_get_layer(e);
const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
int32_t font_h = lv_font_get_line_height(font);
const bool is_rtl = LV_BASE_DIR_RTL == lv_obj_get_style_base_dir(obj, LV_PART_MAIN);
int32_t bg_border = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
int32_t bg_topp = lv_obj_get_style_pad_top(obj, LV_PART_MAIN) + bg_border;
int32_t bg_p = is_rtl ? lv_obj_get_style_pad_right(obj, LV_PART_MAIN) : lv_obj_get_style_pad_left(obj,
LV_PART_MAIN) + bg_border;
int32_t bg_colp = lv_obj_get_style_pad_column(obj, LV_PART_MAIN);
int32_t marker_leftp = lv_obj_get_style_pad_left(obj, LV_PART_INDICATOR);
int32_t marker_rightp = lv_obj_get_style_pad_right(obj, LV_PART_INDICATOR);
int32_t marker_topp = lv_obj_get_style_pad_top(obj, LV_PART_INDICATOR);
int32_t marker_bottomp = lv_obj_get_style_pad_bottom(obj, LV_PART_INDICATOR);
int32_t transf_w = lv_obj_get_style_transform_width(obj, LV_PART_INDICATOR);
int32_t transf_h = lv_obj_get_style_transform_height(obj, LV_PART_INDICATOR);
lv_draw_rect_dsc_t indic_dsc;
lv_draw_rect_dsc_init(&indic_dsc);
lv_obj_init_draw_rect_dsc(obj, LV_PART_INDICATOR, &indic_dsc);
lv_area_t marker_area;
if(is_rtl) {
marker_area.x2 = obj->coords.x2 - bg_p;
marker_area.x1 = marker_area.x2 - font_h - marker_leftp - marker_rightp + 1;
}
else {
marker_area.x1 = obj->coords.x1 + bg_p;
marker_area.x2 = marker_area.x1 + font_h + marker_leftp + marker_rightp - 1;
}
marker_area.y1 = obj->coords.y1 + bg_topp;
marker_area.y2 = marker_area.y1 + font_h + marker_topp + marker_bottomp - 1;
lv_area_t marker_area_transf;
lv_area_copy(&marker_area_transf, &marker_area);
lv_area_increase(&marker_area_transf, transf_w, transf_h);
lv_draw_rect(layer, &indic_dsc, &marker_area_transf);
int32_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
int32_t letter_space = lv_obj_get_style_text_letter_space(obj, LV_PART_MAIN);
lv_point_t txt_size;
lv_text_get_size(&txt_size, cb->txt, font, letter_space, line_space, LV_COORD_MAX, LV_TEXT_FLAG_NONE);
lv_draw_label_dsc_t txt_dsc;
lv_draw_label_dsc_init(&txt_dsc);
lv_obj_init_draw_label_dsc(obj, LV_PART_MAIN, &txt_dsc);
txt_dsc.text = cb->txt;
int32_t y_ofs = (lv_area_get_height(&marker_area) - font_h) / 2;
lv_area_t txt_area;
if(is_rtl) {
txt_area.x2 = marker_area.x1 - bg_colp;
txt_area.x1 = txt_area.x2 - txt_size.x;
}
else {
txt_area.x1 = marker_area.x2 + bg_colp;
txt_area.x2 = txt_area.x1 + txt_size.x;
}
txt_area.y1 = obj->coords.y1 + bg_topp + y_ofs;
txt_area.y2 = txt_area.y1 + txt_size.y;
lv_draw_label(layer, &txt_dsc, &txt_area);
}
#endif
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