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lvgl_cpp/lvgl/widgets/lv_table.c

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/**
* @file lv_table.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_table.h"
#if LV_USE_TABLE != 0
#include "../core/lv_indev.h"
#include "../misc/lv_assert.h"
#include "../misc/lv_txt.h"
#include "../misc/lv_txt_ap.h"
#include "../misc/lv_math.h"
#include "../misc/lv_printf.h"
#include "../draw/lv_draw.h"
/*********************
* DEFINES
*********************/
#define MY_CLASS &lv_table_class
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_table_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_table_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_table_event(const lv_obj_class_t * class_p, lv_event_t * e);
static void draw_main(lv_event_t * e);
static lv_coord_t get_row_height(lv_obj_t * obj, uint16_t row_id, const lv_font_t * font,
lv_coord_t letter_space, lv_coord_t line_space,
lv_coord_t cell_left, lv_coord_t cell_right, lv_coord_t cell_top, lv_coord_t cell_bottom);
static void refr_size(lv_obj_t * obj, uint32_t start_row);
static lv_res_t get_pressed_cell(lv_obj_t * obj, uint16_t * row, uint16_t * col);
static size_t get_cell_txt_len(const char * txt);
static void copy_cell_txt(char * dst, const char * txt);
static inline bool is_cell_empty(void * cell)
{
return cell == NULL;
}
/**********************
* STATIC VARIABLES
**********************/
const lv_obj_class_t lv_table_class = {
.constructor_cb = lv_table_constructor,
.destructor_cb = lv_table_destructor,
.event_cb = lv_table_event,
.width_def = LV_SIZE_CONTENT,
.height_def = LV_SIZE_CONTENT,
.base_class = &lv_obj_class,
.editable = LV_OBJ_CLASS_EDITABLE_TRUE,
.group_def = LV_OBJ_CLASS_GROUP_DEF_TRUE,
.instance_size = sizeof(lv_table_t),
};
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_obj_t * lv_table_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_table_set_cell_value(lv_obj_t * obj, uint16_t row, uint16_t col, const char * txt)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
LV_ASSERT_NULL(txt);
lv_table_t * table = (lv_table_t *)obj;
/*Auto expand*/
if(col >= table->col_cnt) lv_table_set_col_cnt(obj, col + 1);
if(row >= table->row_cnt) lv_table_set_row_cnt(obj, row + 1);
uint32_t cell = row * table->col_cnt + col;
lv_table_cell_ctrl_t ctrl = 0;
/*Save the control byte*/
if(table->cell_data[cell]) ctrl = table->cell_data[cell][0];
size_t to_allocate = get_cell_txt_len(txt);
table->cell_data[cell] = lv_mem_realloc(table->cell_data[cell], to_allocate);
LV_ASSERT_MALLOC(table->cell_data[cell]);
if(table->cell_data[cell] == NULL) return;
copy_cell_txt(table->cell_data[cell], txt);
table->cell_data[cell][0] = ctrl;
refr_size(obj, row);
lv_obj_invalidate(obj);
}
void lv_table_set_cell_value_fmt(lv_obj_t * obj, uint16_t row, uint16_t col, const char * fmt, ...)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
LV_ASSERT_NULL(fmt);
lv_table_t * table = (lv_table_t *)obj;
if(col >= table->col_cnt) {
lv_table_set_col_cnt(obj, col + 1);
}
/*Auto expand*/
if(row >= table->row_cnt) {
lv_table_set_row_cnt(obj, row + 1);
}
uint32_t cell = row * table->col_cnt + col;
lv_table_cell_ctrl_t ctrl = 0;
/*Save the control byte*/
if(table->cell_data[cell]) ctrl = table->cell_data[cell][0];
va_list ap, ap2;
va_start(ap, fmt);
va_copy(ap2, ap);
/*Allocate space for the new text by using trick from C99 standard section 7.19.6.12*/
uint32_t len = lv_vsnprintf(NULL, 0, fmt, ap);
va_end(ap);
#if LV_USE_ARABIC_PERSIAN_CHARS
/*Put together the text according to the format string*/
char * raw_txt = lv_mem_buf_get(len + 1);
LV_ASSERT_MALLOC(raw_txt);
if(raw_txt == NULL) {
va_end(ap2);
return;
}
lv_vsnprintf(raw_txt, len + 1, fmt, ap2);
/*Get the size of the Arabic text and process it*/
size_t len_ap = _lv_txt_ap_calc_bytes_cnt(raw_txt);
table->cell_data[cell] = lv_mem_realloc(table->cell_data[cell], len_ap + 1);
LV_ASSERT_MALLOC(table->cell_data[cell]);
if(table->cell_data[cell] == NULL) {
va_end(ap2);
return;
}
_lv_txt_ap_proc(raw_txt, &table->cell_data[cell][1]);
lv_mem_buf_release(raw_txt);
#else
table->cell_data[cell] = lv_mem_realloc(table->cell_data[cell], len + 2); /*+1: trailing '\0; +1: format byte*/
LV_ASSERT_MALLOC(table->cell_data[cell]);
if(table->cell_data[cell] == NULL) {
va_end(ap2);
return;
}
table->cell_data[cell][len + 1] = 0; /*Ensure NULL termination*/
lv_vsnprintf(&table->cell_data[cell][1], len + 1, fmt, ap2);
#endif
va_end(ap2);
table->cell_data[cell][0] = ctrl;
/*Refresh the row height*/
lv_coord_t cell_left = lv_obj_get_style_pad_left(obj, LV_PART_ITEMS);
lv_coord_t cell_right = lv_obj_get_style_pad_right(obj, LV_PART_ITEMS);
lv_coord_t cell_top = lv_obj_get_style_pad_top(obj, LV_PART_ITEMS);
lv_coord_t cell_bottom = lv_obj_get_style_pad_bottom(obj, LV_PART_ITEMS);
lv_coord_t letter_space = lv_obj_get_style_text_letter_space(obj, LV_PART_ITEMS);
lv_coord_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_ITEMS);
const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_ITEMS);
lv_coord_t h = get_row_height(obj, row, font, letter_space, line_space,
cell_left, cell_right, cell_top, cell_bottom);
lv_coord_t minh = lv_obj_get_style_min_height(obj, LV_PART_ITEMS);
lv_coord_t maxh = lv_obj_get_style_max_height(obj, LV_PART_ITEMS);
table->row_h[row] = LV_CLAMP(minh, h, maxh);
lv_obj_invalidate(obj);
}
void lv_table_set_row_cnt(lv_obj_t * obj, uint16_t row_cnt)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
if(table->row_cnt == row_cnt) return;
uint16_t old_row_cnt = table->row_cnt;
table->row_cnt = row_cnt;
table->row_h = lv_mem_realloc(table->row_h, table->row_cnt * sizeof(table->row_h[0]));
LV_ASSERT_MALLOC(table->row_h);
if(table->row_h == NULL) return;
/*Free the unused cells*/
if(old_row_cnt > row_cnt) {
uint16_t old_cell_cnt = old_row_cnt * table->col_cnt;
uint32_t new_cell_cnt = table->col_cnt * table->row_cnt;
uint32_t i;
for(i = new_cell_cnt; i < old_cell_cnt; i++) {
lv_mem_free(table->cell_data[i]);
}
}
table->cell_data = lv_mem_realloc(table->cell_data, table->row_cnt * table->col_cnt * sizeof(char *));
LV_ASSERT_MALLOC(table->cell_data);
if(table->cell_data == NULL) return;
/*Initialize the new fields*/
if(old_row_cnt < row_cnt) {
uint32_t old_cell_cnt = old_row_cnt * table->col_cnt;
uint32_t new_cell_cnt = table->col_cnt * table->row_cnt;
lv_memset_00(&table->cell_data[old_cell_cnt], (new_cell_cnt - old_cell_cnt) * sizeof(table->cell_data[0]));
}
refr_size(obj, 0);
}
void lv_table_set_col_cnt(lv_obj_t * obj, uint16_t col_cnt)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
if(table->col_cnt == col_cnt) return;
uint16_t old_col_cnt = table->col_cnt;
table->col_cnt = col_cnt;
char ** new_cell_data = lv_mem_alloc(table->row_cnt * table->col_cnt * sizeof(char *));
LV_ASSERT_MALLOC(new_cell_data);
if(new_cell_data == NULL) return;
uint32_t new_cell_cnt = table->col_cnt * table->row_cnt;
lv_memset_00(new_cell_data, new_cell_cnt * sizeof(table->cell_data[0]));
/*The new column(s) messes up the mapping of `cell_data`*/
uint32_t old_col_start;
uint32_t new_col_start;
uint32_t min_col_cnt = LV_MIN(old_col_cnt, col_cnt);
uint32_t row;
for(row = 0; row < table->row_cnt; row++) {
old_col_start = row * old_col_cnt;
new_col_start = row * col_cnt;
lv_memcpy_small(&new_cell_data[new_col_start], &table->cell_data[old_col_start],
sizeof(new_cell_data[0]) * min_col_cnt);
/*Free the old cells (only if the table becomes smaller)*/
int32_t i;
for(i = 0; i < (int32_t)old_col_cnt - col_cnt; i++) {
uint32_t idx = old_col_start + min_col_cnt + i;
lv_mem_free(table->cell_data[idx]);
table->cell_data[idx] = NULL;
}
}
lv_mem_free(table->cell_data);
table->cell_data = new_cell_data;
/*Initialize the new column widths if any*/
table->col_w = lv_mem_realloc(table->col_w, col_cnt * sizeof(table->col_w[0]));
LV_ASSERT_MALLOC(table->col_w);
if(table->col_w == NULL) return;
uint32_t col;
for(col = old_col_cnt; col < col_cnt; col++) {
table->col_w[col] = LV_DPI_DEF;
}
refr_size(obj, 0) ;
}
void lv_table_set_col_width(lv_obj_t * obj, uint16_t col_id, lv_coord_t w)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
/*Auto expand*/
if(col_id >= table->col_cnt) lv_table_set_col_cnt(obj, col_id + 1);
table->col_w[col_id] = w;
refr_size(obj, 0);
}
void lv_table_add_cell_ctrl(lv_obj_t * obj, uint16_t row, uint16_t col, lv_table_cell_ctrl_t ctrl)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
/*Auto expand*/
if(col >= table->col_cnt) lv_table_set_col_cnt(obj, col + 1);
if(row >= table->row_cnt) lv_table_set_row_cnt(obj, row + 1);
uint32_t cell = row * table->col_cnt + col;
if(is_cell_empty(table->cell_data[cell])) {
table->cell_data[cell] = lv_mem_alloc(2); /*+1: trailing '\0; +1: format byte*/
LV_ASSERT_MALLOC(table->cell_data[cell]);
if(table->cell_data[cell] == NULL) return;
table->cell_data[cell][0] = 0;
table->cell_data[cell][1] = '\0';
}
table->cell_data[cell][0] |= ctrl;
}
void lv_table_clear_cell_ctrl(lv_obj_t * obj, uint16_t row, uint16_t col, lv_table_cell_ctrl_t ctrl)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
/*Auto expand*/
if(col >= table->col_cnt) lv_table_set_col_cnt(obj, col + 1);
if(row >= table->row_cnt) lv_table_set_row_cnt(obj, row + 1);
uint32_t cell = row * table->col_cnt + col;
if(is_cell_empty(table->cell_data[cell])) {
table->cell_data[cell] = lv_mem_alloc(2); /*+1: trailing '\0; +1: format byte*/
LV_ASSERT_MALLOC(table->cell_data[cell]);
if(table->cell_data[cell] == NULL) return;
table->cell_data[cell][0] = 0;
table->cell_data[cell][1] = '\0';
}
table->cell_data[cell][0] &= (~ctrl);
}
/*=====================
* Getter functions
*====================*/
const char * lv_table_get_cell_value(lv_obj_t * obj, uint16_t row, uint16_t col)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
if(row >= table->row_cnt || col >= table->col_cnt) {
LV_LOG_WARN("lv_table_set_cell_value: invalid row or column");
return "";
}
uint32_t cell = row * table->col_cnt + col;
if(is_cell_empty(table->cell_data[cell])) return "";
return &table->cell_data[cell][1]; /*Skip the format byte*/
}
uint16_t lv_table_get_row_cnt(lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
return table->row_cnt;
}
uint16_t lv_table_get_col_cnt(lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
return table->col_cnt;
}
lv_coord_t lv_table_get_col_width(lv_obj_t * obj, uint16_t col)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
if(col >= table->col_cnt) {
LV_LOG_WARN("lv_table_set_col_width: too big 'col_id'. Must be < LV_TABLE_COL_MAX.");
return 0;
}
return table->col_w[col];
}
bool lv_table_has_cell_ctrl(lv_obj_t * obj, uint16_t row, uint16_t col, lv_table_cell_ctrl_t ctrl)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_table_t * table = (lv_table_t *)obj;
if(row >= table->row_cnt || col >= table->col_cnt) {
LV_LOG_WARN("lv_table_get_cell_crop: invalid row or column");
return false;
}
uint32_t cell = row * table->col_cnt + col;
if(is_cell_empty(table->cell_data[cell])) return false;
else return (table->cell_data[cell][0] & ctrl) == ctrl;
}
void lv_table_get_selected_cell(lv_obj_t * obj, uint16_t * row, uint16_t * col)
{
lv_table_t * table = (lv_table_t *)obj;
*row = table->row_act;
*col = table->col_act;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_table_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
LV_TRACE_OBJ_CREATE("begin");
lv_table_t * table = (lv_table_t *)obj;
table->col_cnt = 1;
table->row_cnt = 1;
table->col_w = lv_mem_alloc(table->col_cnt * sizeof(table->col_w[0]));
table->row_h = lv_mem_alloc(table->row_cnt * sizeof(table->row_h[0]));
table->col_w[0] = LV_DPI_DEF;
table->row_h[0] = LV_DPI_DEF;
table->cell_data = lv_mem_realloc(table->cell_data, table->row_cnt * table->col_cnt * sizeof(char *));
table->cell_data[0] = NULL;
LV_TRACE_OBJ_CREATE("finished");
}
static void lv_table_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
lv_table_t * table = (lv_table_t *)obj;
/*Free the cell texts*/
uint16_t i;
for(i = 0; i < table->col_cnt * table->row_cnt; i++) {
if(table->cell_data[i]) {
lv_mem_free(table->cell_data[i]);
table->cell_data[i] = NULL;
}
}
if(table->cell_data) lv_mem_free(table->cell_data);
if(table->row_h) lv_mem_free(table->row_h);
if(table->col_w) lv_mem_free(table->col_w);
}
static void lv_table_event(const lv_obj_class_t * class_p, lv_event_t * e)
{
LV_UNUSED(class_p);
lv_res_t res;
/*Call the ancestor's event handler*/
res = lv_obj_event_base(MY_CLASS, e);
if(res != LV_RES_OK) return;
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * obj = lv_event_get_target(e);
lv_table_t * table = (lv_table_t *)obj;
if(code == LV_EVENT_STYLE_CHANGED) {
refr_size(obj, 0);
}
else if(code == LV_EVENT_GET_SELF_SIZE) {
lv_point_t * p = lv_event_get_param(e);
uint32_t i;
lv_coord_t w = 0;
for(i = 0; i < table->col_cnt; i++) w += table->col_w[i];
lv_coord_t h = 0;
for(i = 0; i < table->row_cnt; i++) h += table->row_h[i];
p->x = w - 1;
p->y = h - 1;
}
else if(code == LV_EVENT_PRESSED || code == LV_EVENT_PRESSING) {
uint16_t col;
uint16_t row;
lv_res_t pr_res = get_pressed_cell(obj, &row, &col);
if(pr_res == LV_RES_OK && (table->col_act != col || table->row_act != row)) {
table->col_act = col;
table->row_act = row;
lv_obj_invalidate(obj);
}
}
else if(code == LV_EVENT_RELEASED) {
lv_obj_invalidate(obj);
lv_indev_t * indev = lv_indev_get_act();
lv_obj_t * scroll_obj = lv_indev_get_scroll_obj(indev);
if(table->col_act != LV_TABLE_CELL_NONE && table->row_act != LV_TABLE_CELL_NONE && scroll_obj == NULL) {
res = lv_event_send(obj, LV_EVENT_VALUE_CHANGED, NULL);
if(res != LV_RES_OK) return;
}
lv_indev_type_t indev_type = lv_indev_get_type(lv_indev_get_act());
if(indev_type == LV_INDEV_TYPE_POINTER || indev_type == LV_INDEV_TYPE_BUTTON) {
table->col_act = LV_TABLE_CELL_NONE;
table->row_act = LV_TABLE_CELL_NONE;
}
}
else if(code == LV_EVENT_FOCUSED) {
lv_obj_invalidate(obj);
}
else if(code == LV_EVENT_KEY) {
int32_t c = *((int32_t *)lv_event_get_param(e));
int32_t col = table->col_act;
int32_t row = table->row_act;
if(col == LV_TABLE_CELL_NONE || row == LV_TABLE_CELL_NONE) {
table->col_act = 0;
table->row_act = 0;
lv_obj_invalidate(obj);
return;
}
if(col >= table->col_cnt) col = 0;
if(row >= table->row_cnt) row = 0;
if(c == LV_KEY_LEFT) col--;
else if(c == LV_KEY_RIGHT) col++;
else if(c == LV_KEY_UP) row--;
else if(c == LV_KEY_DOWN) row++;
else return;
if(col >= table->col_cnt) {
if(row < table->row_cnt - 1) {
col = 0;
row++;
}
else {
col = table->col_cnt - 1;
}
}
else if(col < 0) {
if(row != 0) {
col = table->col_cnt - 1;
row--;
}
else {
col = 0;
}
}
if(row >= table->row_cnt) {
row = table->row_cnt - 1;
}
else if(row < 0) {
row = 0;
}
if(table->col_act != col || table->row_act != row) {
table->col_act = col;
table->row_act = row;
lv_obj_invalidate(obj);
res = lv_event_send(obj, LV_EVENT_VALUE_CHANGED, NULL);
if(res != LV_RES_OK) return;
}
}
else if(code == LV_EVENT_DRAW_MAIN) {
draw_main(e);
}
}
static void draw_main(lv_event_t * e)
{
lv_obj_t * obj = lv_event_get_target(e);
lv_table_t * table = (lv_table_t *)obj;
lv_draw_ctx_t * draw_ctx = lv_event_get_draw_ctx(e);
lv_area_t clip_area;
if(!_lv_area_intersect(&clip_area, &obj->coords, draw_ctx->clip_area)) return;
const lv_area_t * clip_area_ori = draw_ctx->clip_area;
draw_ctx->clip_area = &clip_area;
lv_point_t txt_size;
lv_area_t cell_area;
lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
lv_coord_t bg_top = lv_obj_get_style_pad_top(obj, LV_PART_MAIN);
lv_coord_t bg_bottom = lv_obj_get_style_pad_bottom(obj, LV_PART_MAIN);
lv_coord_t bg_left = lv_obj_get_style_pad_left(obj, LV_PART_MAIN);
lv_coord_t bg_right = lv_obj_get_style_pad_right(obj, LV_PART_MAIN);
lv_state_t state_ori = obj->state;
obj->state = LV_STATE_DEFAULT;
obj->skip_trans = 1;
lv_draw_rect_dsc_t rect_dsc_def;
lv_draw_rect_dsc_t rect_dsc_act; /*Passed to the event to modify it*/
lv_draw_rect_dsc_init(&rect_dsc_def);
lv_obj_init_draw_rect_dsc(obj, LV_PART_ITEMS, &rect_dsc_def);
lv_draw_label_dsc_t label_dsc_def;
lv_draw_label_dsc_t label_dsc_act; /*Passed to the event to modify it*/
lv_draw_label_dsc_init(&label_dsc_def);
lv_obj_init_draw_label_dsc(obj, LV_PART_ITEMS, &label_dsc_def);
obj->state = state_ori;
obj->skip_trans = 0;
uint16_t col;
uint16_t row;
uint16_t cell = 0;
cell_area.y2 = obj->coords.y1 + bg_top - 1 - lv_obj_get_scroll_y(obj) + border_width;
lv_coord_t scroll_x = lv_obj_get_scroll_x(obj) ;
bool rtl = lv_obj_get_style_base_dir(obj, LV_PART_MAIN) == LV_BASE_DIR_RTL;
/*Handle custom drawer*/
lv_obj_draw_part_dsc_t part_draw_dsc;
lv_obj_draw_dsc_init(&part_draw_dsc, draw_ctx);
part_draw_dsc.part = LV_PART_ITEMS;
part_draw_dsc.class_p = MY_CLASS;
part_draw_dsc.type = LV_TABLE_DRAW_PART_CELL;
part_draw_dsc.rect_dsc = &rect_dsc_act;
part_draw_dsc.label_dsc = &label_dsc_act;
for(row = 0; row < table->row_cnt; row++) {
lv_coord_t h_row = table->row_h[row];
cell_area.y1 = cell_area.y2 + 1;
cell_area.y2 = cell_area.y1 + h_row - 1;
if(cell_area.y1 > clip_area.y2) break;
if(rtl) cell_area.x1 = obj->coords.x2 - bg_right - 1 - scroll_x - border_width;
else cell_area.x2 = obj->coords.x1 + bg_left - 1 - scroll_x + border_width;
for(col = 0; col < table->col_cnt; col++) {
lv_table_cell_ctrl_t ctrl = 0;
if(table->cell_data[cell]) ctrl = table->cell_data[cell][0];
if(rtl) {
cell_area.x2 = cell_area.x1 - 1;
cell_area.x1 = cell_area.x2 - table->col_w[col] + 1;
}
else {
cell_area.x1 = cell_area.x2 + 1;
cell_area.x2 = cell_area.x1 + table->col_w[col] - 1;
}
uint16_t col_merge = 0;
for(col_merge = 0; col_merge + col < table->col_cnt - 1; col_merge++) {
char * next_cell_data = table->cell_data[cell + col_merge];
if(is_cell_empty(next_cell_data)) break;
lv_table_cell_ctrl_t merge_ctrl = (lv_table_cell_ctrl_t) next_cell_data[0];
if(merge_ctrl & LV_TABLE_CELL_CTRL_MERGE_RIGHT) {
lv_coord_t offset = table->col_w[col + col_merge + 1];
if(rtl) cell_area.x1 -= offset;
else cell_area.x2 += offset;
}
else {
break;
}
}
if(cell_area.y2 < clip_area.y1) {
cell += col_merge + 1;
col += col_merge;
continue;
}
/*Expand the cell area with a half border to avoid drawing 2 borders next to each other*/
lv_area_t cell_area_border;
lv_area_copy(&cell_area_border, &cell_area);
if((rect_dsc_def.border_side & LV_BORDER_SIDE_LEFT) && cell_area_border.x1 > obj->coords.x1 + bg_left) {
cell_area_border.x1 -= rect_dsc_def.border_width / 2;
}
if((rect_dsc_def.border_side & LV_BORDER_SIDE_TOP) && cell_area_border.y1 > obj->coords.y1 + bg_top) {
cell_area_border.y1 -= rect_dsc_def.border_width / 2;
}
if((rect_dsc_def.border_side & LV_BORDER_SIDE_RIGHT) && cell_area_border.x2 < obj->coords.x2 - bg_right - 1) {
cell_area_border.x2 += rect_dsc_def.border_width / 2 + (rect_dsc_def.border_width & 0x1);
}
if((rect_dsc_def.border_side & LV_BORDER_SIDE_BOTTOM) &&
cell_area_border.y2 < obj->coords.y2 - bg_bottom - 1) {
cell_area_border.y2 += rect_dsc_def.border_width / 2 + (rect_dsc_def.border_width & 0x1);
}
lv_state_t cell_state = LV_STATE_DEFAULT;
if(row == table->row_act && col == table->col_act) {
if(!(obj->state & LV_STATE_SCROLLED) && (obj->state & LV_STATE_PRESSED)) cell_state |= LV_STATE_PRESSED;
if(obj->state & LV_STATE_FOCUSED) cell_state |= LV_STATE_FOCUSED;
if(obj->state & LV_STATE_FOCUS_KEY) cell_state |= LV_STATE_FOCUS_KEY;
if(obj->state & LV_STATE_EDITED) cell_state |= LV_STATE_EDITED;
}
/*Set up the draw descriptors*/
if(cell_state == LV_STATE_DEFAULT) {
lv_memcpy(&rect_dsc_act, &rect_dsc_def, sizeof(lv_draw_rect_dsc_t));
lv_memcpy(&label_dsc_act, &label_dsc_def, sizeof(lv_draw_label_dsc_t));
}
/*In other cases get the styles directly without caching them*/
else {
obj->state = cell_state;
obj->skip_trans = 1;
lv_draw_rect_dsc_init(&rect_dsc_act);
lv_draw_label_dsc_init(&label_dsc_act);
lv_obj_init_draw_rect_dsc(obj, LV_PART_ITEMS, &rect_dsc_act);
lv_obj_init_draw_label_dsc(obj, LV_PART_ITEMS, &label_dsc_act);
obj->state = state_ori;
obj->skip_trans = 0;
}
part_draw_dsc.draw_area = &cell_area_border;
part_draw_dsc.id = row * table->col_cnt + col;
lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &part_draw_dsc);
lv_draw_rect(draw_ctx, &rect_dsc_act, &cell_area_border);
if(table->cell_data[cell]) {
const lv_coord_t cell_left = lv_obj_get_style_pad_left(obj, LV_PART_ITEMS);
const lv_coord_t cell_right = lv_obj_get_style_pad_right(obj, LV_PART_ITEMS);
const lv_coord_t cell_top = lv_obj_get_style_pad_top(obj, LV_PART_ITEMS);
const lv_coord_t cell_bottom = lv_obj_get_style_pad_bottom(obj, LV_PART_ITEMS);
lv_text_flag_t txt_flags = LV_TEXT_FLAG_NONE;
lv_area_t txt_area;
txt_area.x1 = cell_area.x1 + cell_left;
txt_area.x2 = cell_area.x2 - cell_right;
txt_area.y1 = cell_area.y1 + cell_top;
txt_area.y2 = cell_area.y2 - cell_bottom;
/*Align the content to the middle if not cropped*/
bool crop = ctrl & LV_TABLE_CELL_CTRL_TEXT_CROP ? true : false;
if(crop) txt_flags = LV_TEXT_FLAG_EXPAND;
lv_txt_get_size(&txt_size, table->cell_data[cell] + 1, label_dsc_def.font,
label_dsc_act.letter_space, label_dsc_act.line_space,
lv_area_get_width(&txt_area), txt_flags);
/*Align the content to the middle if not cropped*/
if(!crop) {
txt_area.y1 = cell_area.y1 + h_row / 2 - txt_size.y / 2;
txt_area.y2 = cell_area.y1 + h_row / 2 + txt_size.y / 2;
}
lv_area_t label_clip_area;
bool label_mask_ok;
label_mask_ok = _lv_area_intersect(&label_clip_area, &clip_area, &cell_area);
if(label_mask_ok) {
draw_ctx->clip_area = &label_clip_area;
lv_draw_label(draw_ctx, &label_dsc_act, &txt_area, table->cell_data[cell] + 1, NULL);
draw_ctx->clip_area = &clip_area;
}
}
lv_event_send(obj, LV_EVENT_DRAW_PART_END, &part_draw_dsc);
cell += col_merge + 1;
col += col_merge;
}
}
draw_ctx->clip_area = clip_area_ori;
}
/* Refreshes size of the table starting from @start_row row */
static void refr_size(lv_obj_t * obj, uint32_t start_row)
{
const lv_coord_t cell_left = lv_obj_get_style_pad_left(obj, LV_PART_ITEMS);
const lv_coord_t cell_right = lv_obj_get_style_pad_right(obj, LV_PART_ITEMS);
const lv_coord_t cell_top = lv_obj_get_style_pad_top(obj, LV_PART_ITEMS);
const lv_coord_t cell_bottom = lv_obj_get_style_pad_bottom(obj, LV_PART_ITEMS);
lv_coord_t letter_space = lv_obj_get_style_text_letter_space(obj, LV_PART_ITEMS);
lv_coord_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_ITEMS);
const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_ITEMS);
const lv_coord_t minh = lv_obj_get_style_min_height(obj, LV_PART_ITEMS);
const lv_coord_t maxh = lv_obj_get_style_max_height(obj, LV_PART_ITEMS);
lv_table_t * table = (lv_table_t *)obj;
uint32_t i;
for(i = start_row; i < table->row_cnt; i++) {
lv_coord_t calculated_height = get_row_height(obj, i, font, letter_space, line_space,
cell_left, cell_right, cell_top, cell_bottom);
table->row_h[i] = LV_CLAMP(minh, calculated_height, maxh);
}
lv_obj_refresh_self_size(obj) ;
}
static lv_coord_t get_row_height(lv_obj_t * obj, uint16_t row_id, const lv_font_t * font,
lv_coord_t letter_space, lv_coord_t line_space,
lv_coord_t cell_left, lv_coord_t cell_right, lv_coord_t cell_top, lv_coord_t cell_bottom)
{
lv_table_t * table = (lv_table_t *)obj;
lv_coord_t h_max = lv_font_get_line_height(font) + cell_top + cell_bottom;
/* Calculate the cell_data index where to start */
uint16_t row_start = row_id * table->col_cnt;
/* Traverse the cells in the row_id row */
uint16_t cell;
uint16_t col;
for(cell = row_start, col = 0; cell < row_start + table->col_cnt; cell++, col++) {
char * cell_data = table->cell_data[cell];
if(is_cell_empty(cell_data)) {
continue;
}
lv_coord_t txt_w = table->col_w[col];
/* Traverse the current row from the first until the penultimate column.
* Increment the text width if the cell has the LV_TABLE_CELL_CTRL_MERGE_RIGHT control,
* exit the traversal when the current cell control is not LV_TABLE_CELL_CTRL_MERGE_RIGHT */
uint16_t col_merge = 0;
for(col_merge = 0; col_merge + col < table->col_cnt - 1; col_merge++) {
char * next_cell_data = table->cell_data[cell + col_merge];
if(is_cell_empty(next_cell_data)) break;
lv_table_cell_ctrl_t ctrl = (lv_table_cell_ctrl_t) next_cell_data[0];
if(ctrl & LV_TABLE_CELL_CTRL_MERGE_RIGHT) {
txt_w += table->col_w[col + col_merge + 1];
}
else {
break;
}
}
lv_table_cell_ctrl_t ctrl = (lv_table_cell_ctrl_t) cell_data[0];
/*When cropping the text we can assume the row height is equal to the line height*/
if(ctrl & LV_TABLE_CELL_CTRL_TEXT_CROP) {
h_max = LV_MAX(lv_font_get_line_height(font) + cell_top + cell_bottom,
h_max);
}
/*Else we have to calculate the height of the cell text*/
else {
lv_point_t txt_size;
txt_w -= cell_left + cell_right;
lv_txt_get_size(&txt_size, table->cell_data[cell] + 1, font,
letter_space, line_space, txt_w, LV_TEXT_FLAG_NONE);
h_max = LV_MAX(txt_size.y + cell_top + cell_bottom, h_max);
/*Skip until one element after the last merged column*/
cell += col_merge;
col += col_merge;
}
}
return h_max;
}
static lv_res_t get_pressed_cell(lv_obj_t * obj, uint16_t * row, uint16_t * col)
{
lv_table_t * table = (lv_table_t *)obj;
lv_indev_type_t type = lv_indev_get_type(lv_indev_get_act());
if(type != LV_INDEV_TYPE_POINTER && type != LV_INDEV_TYPE_BUTTON) {
if(col) *col = LV_TABLE_CELL_NONE;
if(row) *row = LV_TABLE_CELL_NONE;
return LV_RES_INV;
}
lv_point_t p;
lv_indev_get_point(lv_indev_get_act(), &p);
lv_coord_t tmp;
if(col) {
lv_coord_t x = p.x + lv_obj_get_scroll_x(obj);
if(lv_obj_get_style_base_dir(obj, LV_PART_MAIN) == LV_BASE_DIR_RTL) {
x = obj->coords.x2 - lv_obj_get_style_pad_right(obj, LV_PART_MAIN) - x;
}
else {
x -= obj->coords.x1;
x -= lv_obj_get_style_pad_left(obj, LV_PART_MAIN);
}
*col = 0;
tmp = 0;
for(*col = 0; *col < table->col_cnt; (*col)++) {
tmp += table->col_w[*col];
if(x < tmp) break;
}
}
if(row) {
lv_coord_t y = p.y + lv_obj_get_scroll_y(obj);;
y -= obj->coords.y1;
y -= lv_obj_get_style_pad_top(obj, LV_PART_MAIN);
*row = 0;
tmp = 0;
for(*row = 0; *row < table->row_cnt; (*row)++) {
tmp += table->row_h[*row];
if(y < tmp) break;
}
}
return LV_RES_OK;
}
/* Returns number of bytes to allocate based on chars configuration */
static size_t get_cell_txt_len(const char * txt)
{
size_t retval = 0;
#if LV_USE_ARABIC_PERSIAN_CHARS
retval = _lv_txt_ap_calc_bytes_cnt(txt) + 1;
#else
/* cell_data layout: [ctrl][txt][trailing '\0' terminator]
* +2 because of the trailing '\0' and the ctrl */
retval = strlen(txt) + 2;
#endif
return retval;
}
/* Copy txt into dst skipping the format byte */
static void copy_cell_txt(char * dst, const char * txt)
{
#if LV_USE_ARABIC_PERSIAN_CHARS
_lv_txt_ap_proc(txt, &dst[1]);
#else
strcpy(&dst[1], txt);
#endif
}
#endif
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