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lvgl/src/lv_widgets/lv_table.c
Gabor Kiss-Vamosi b8676b26b2 renames and fixes
2020-02-15 00:33:26 +01:00

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/**
* @file lv_table.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_table.h"
#if LV_USE_TABLE != 0
#include "../lv_core/lv_debug.h"
#include "../lv_misc/lv_txt.h"
#include "../lv_misc/lv_math.h"
#include "../lv_draw/lv_draw_label.h"
#include "../lv_themes/lv_theme.h"
/*********************
* DEFINES
*********************/
#define LV_OBJX_NAME "lv_table"
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static lv_design_res_t lv_table_design(lv_obj_t * table, const lv_area_t * clip_area, lv_design_mode_t mode);
static lv_res_t lv_table_signal(lv_obj_t * table, lv_signal_t sign, void * param);
static lv_style_list_t * lv_table_get_style(lv_obj_t * table, uint8_t part);
static lv_coord_t get_row_height(lv_obj_t * table, uint16_t row_id, const lv_font_t ** font, lv_style_int_t * letter_space, lv_style_int_t * line_space,
lv_style_int_t * cell_left, lv_style_int_t * cell_right, lv_style_int_t * cell_top, lv_style_int_t * cell_bottom);
static void refr_size(lv_obj_t * table);
/**********************
* STATIC VARIABLES
**********************/
static lv_signal_cb_t ancestor_signal;
static lv_design_cb_t ancestor_design;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a table object
* @param par pointer to an object, it will be the parent of the new table
* @param copy pointer to a table object, if not NULL then the new object will be copied from it
* @return pointer to the created table
*/
lv_obj_t * lv_table_create(lv_obj_t * par, const lv_obj_t * copy)
{
LV_LOG_TRACE("table create started");
/*Create the ancestor of table*/
lv_obj_t * table = lv_obj_create(par, copy);
LV_ASSERT_MEM(table);
if(table == NULL) return NULL;
/*Allocate the table type specific extended data*/
lv_table_ext_t * ext = lv_obj_allocate_ext_attr(table, sizeof(lv_table_ext_t));
LV_ASSERT_MEM(ext);
if(ext == NULL) {
lv_obj_del(table);
return NULL;
}
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_cb(table);
if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_cb(table);
/*Initialize the allocated 'ext' */
ext->cell_data = NULL;
ext->col_cnt = 0;
ext->row_cnt = 0;
uint16_t i;
for(i = 0; i < LV_TABLE_CELL_STYLE_CNT; i++) {
lv_style_list_init(&ext->cell_style[i]);
}
for(i = 0; i < LV_TABLE_COL_MAX; i++) {
ext->col_w[i] = LV_DPI;
}
/*The signal and design functions are not copied so set them here*/
lv_obj_set_signal_cb(table, lv_table_signal);
lv_obj_set_design_cb(table, lv_table_design);
/*Init the new table table*/
if(copy == NULL) {
lv_theme_apply(table, LV_THEME_TABLE);
}
/*Copy an existing table*/
else {
lv_table_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
for(i = 0; i < LV_TABLE_CELL_STYLE_CNT; i++) {
lv_style_list_copy(&ext->cell_style[i], &copy_ext->cell_style[i]);
lv_table_set_row_cnt(table, copy_ext->row_cnt);
lv_table_set_col_cnt(table, copy_ext->col_cnt);
}
/*Refresh the style with new signal function*/
lv_obj_refresh_style(table);
}
LV_LOG_INFO("table created");
return table;
}
/*=====================
* Setter functions
*====================*/
/**
* Set the value of a cell.
* @param table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @param txt text to display in the cell. It will be copied and saved so this variable is not
* required after this function call.
*/
void lv_table_set_cell_value(lv_obj_t * table, uint16_t row, uint16_t col, const char * txt)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
LV_ASSERT_NULL(txt);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_set_cell_value: invalid row or column");
return;
}
uint32_t cell = row * ext->col_cnt + col;
lv_table_cell_format_t format;
/*Save the format byte*/
if(ext->cell_data[cell]) {
format.format_byte = ext->cell_data[cell][0];
}
/*Initialize the format byte*/
else {
lv_bidi_dir_t base_dir = lv_obj_get_base_dir(table);
if(base_dir == LV_BIDI_DIR_LTR) format.s.align = LV_LABEL_ALIGN_LEFT;
else if(base_dir == LV_BIDI_DIR_RTL) format.s.align = LV_LABEL_ALIGN_RIGHT;
else if(base_dir == LV_BIDI_DIR_AUTO)
#if LV_USE_BIDI
format.s.align = lv_bidi_detect_base_dir(txt);
#else
format.s.align = LV_LABEL_ALIGN_LEFT;
#endif
format.s.right_merge = 0;
format.s.type = 0;
format.s.crop = 0;
}
ext->cell_data[cell] = lv_mem_realloc(ext->cell_data[cell], strlen(txt) + 2); /*+1: trailing '\0; +1: format byte*/
strcpy(ext->cell_data[cell] + 1, txt); /*+1 to skip the format byte*/
ext->cell_data[cell][0] = format.format_byte;
refr_size(table);
}
/**
* Set the number of rows
* @param table table pointer to a Table object
* @param row_cnt number of rows
*/
void lv_table_set_row_cnt(lv_obj_t * table, uint16_t row_cnt)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
uint16_t old_row_cnt = ext->row_cnt;
ext->row_cnt = row_cnt;
if(ext->row_cnt > 0 && ext->col_cnt > 0) {
ext->cell_data = lv_mem_realloc(ext->cell_data, ext->row_cnt * ext->col_cnt * sizeof(char *));
/*Initilize the new fields*/
if(old_row_cnt < row_cnt) {
uint16_t old_cell_cnt = old_row_cnt * ext->col_cnt;
uint32_t new_cell_cnt = ext->col_cnt * ext->row_cnt;
memset(&ext->cell_data[old_cell_cnt], 0, (new_cell_cnt - old_cell_cnt) * sizeof(ext->cell_data[0]));
}
} else {
lv_mem_free(ext->cell_data);
ext->cell_data = NULL;
}
refr_size(table);
}
/**
* Set the number of columns
* @param table table pointer to a Table object
* @param col_cnt number of columns. Must be < LV_TABLE_COL_MAX
*/
void lv_table_set_col_cnt(lv_obj_t * table, uint16_t col_cnt)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
if(col_cnt >= LV_TABLE_COL_MAX) {
LV_LOG_WARN("lv_table_set_col_cnt: too many columns. Must be < LV_TABLE_COL_MAX.");
return;
}
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
uint16_t old_col_cnt = ext->col_cnt;
ext->col_cnt = col_cnt;
if(ext->row_cnt > 0 && ext->col_cnt > 0) {
ext->cell_data = lv_mem_realloc(ext->cell_data, ext->row_cnt * ext->col_cnt * sizeof(char *));
/*Initilize the new fields*/
if(old_col_cnt < col_cnt) {
uint16_t old_cell_cnt = old_col_cnt * ext->row_cnt;
uint32_t new_cell_cnt = ext->col_cnt * ext->row_cnt;
memset(&ext->cell_data[old_cell_cnt], 0, (new_cell_cnt - old_cell_cnt) * sizeof(ext->cell_data[0]));
}
} else {
lv_mem_free(ext->cell_data);
ext->cell_data = NULL;
}
refr_size(table);
}
/**
* Set the width of a column
* @param table table pointer to a Table object
* @param col_id id of the column [0 .. LV_TABLE_COL_MAX -1]
* @param w width of the column
*/
void lv_table_set_col_width(lv_obj_t * table, uint16_t col_id, lv_coord_t w)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
if(col_id >= LV_TABLE_COL_MAX) {
LV_LOG_WARN("lv_table_set_col_width: too big 'col_id'. Must be < LV_TABLE_COL_MAX.");
return;
}
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
ext->col_w[col_id] = w;
refr_size(table);
}
/**
* Set the text align in a cell
* @param table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @param align LV_LABEL_ALIGN_LEFT or LV_LABEL_ALIGN_CENTER or LV_LABEL_ALIGN_RIGHT
*/
void lv_table_set_cell_align(lv_obj_t * table, uint16_t row, uint16_t col, lv_label_align_t align)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_set_cell_align: invalid row or column");
return;
}
uint32_t cell = row * ext->col_cnt + col;
if(ext->cell_data[cell] == NULL) {
ext->cell_data[cell] = lv_mem_alloc(2); /*+1: trailing '\0; +1: format byte*/
ext->cell_data[cell][0] = 0;
ext->cell_data[cell][1] = '\0';
}
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell][0];
format.s.align = align;
ext->cell_data[cell][0] = format.format_byte;
}
/**
* Set the type of a cell.
* @param table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @param type 1,2,3 or 4. The cell style will be chosen accordingly.
*/
void lv_table_set_cell_type(lv_obj_t * table, uint16_t row, uint16_t col, uint8_t type)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_set_cell_type: invalid row or column");
return;
}
uint32_t cell = row * ext->col_cnt + col;
if(ext->cell_data[cell] == NULL) {
ext->cell_data[cell] = lv_mem_alloc(2); /*+1: trailing '\0; +1: format byte*/
ext->cell_data[cell][0] = 0;
ext->cell_data[cell][1] = '\0';
}
if(type > 0) type--; /*User gives 1,2,3,4 but easier to handle 0, 1, 2, 3*/
if(type >= LV_TABLE_CELL_STYLE_CNT) type = LV_TABLE_CELL_STYLE_CNT - 1;
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell][0];
format.s.type = type;
ext->cell_data[cell][0] = format.format_byte;
}
/**
* Set the cell crop. (Don't adjust the height of the cell according to its content)
* @param table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @param crop true: crop the cell content; false: set the cell height to the content.
*/
void lv_table_set_cell_crop(lv_obj_t * table, uint16_t row, uint16_t col, bool crop)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_set_cell_crop: invalid row or column");
return;
}
uint32_t cell = row * ext->col_cnt + col;
if(ext->cell_data[cell] == NULL) {
ext->cell_data[cell] = lv_mem_alloc(2); /*+1: trailing '\0; +1: format byte*/
ext->cell_data[cell][0] = 0;
ext->cell_data[cell][1] = '\0';
}
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell][0];
format.s.crop = crop;
ext->cell_data[cell][0] = format.format_byte;
}
/**
* Merge a cell with the right neighbor. The value of the cell to the right won't be displayed.
* @param table table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @param en true: merge right; false: don't merge right
*/
void lv_table_set_cell_merge_right(lv_obj_t * table, uint16_t row, uint16_t col, bool en)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_set_cell_merge_right: invalid row or column");
return;
}
uint32_t cell = row * ext->col_cnt + col;
if(ext->cell_data[cell] == NULL) {
ext->cell_data[cell] = lv_mem_alloc(2); /*+1: trailing '\0; +1: format byte*/
ext->cell_data[cell][0] = 0;
ext->cell_data[cell][1] = '\0';
}
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell][0];
format.s.right_merge = en ? 1 : 0;
ext->cell_data[cell][0] = format.format_byte;
refr_size(table);
}
/*=====================
* Getter functions
*====================*/
/**
* Get the value of a cell.
* @param table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @return text in the cell
*/
const char * lv_table_get_cell_value(lv_obj_t * table, uint16_t row, uint16_t col)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_set_cell_value: invalid row or column");
return "";
}
uint32_t cell = row * ext->col_cnt + col;
if(ext->cell_data[cell] == NULL) return "";
return &ext->cell_data[cell][1]; /*Skip the format byte*/
}
/**
* Get the number of rows.
* @param table table pointer to a Table object
* @return number of rows.
*/
uint16_t lv_table_get_row_cnt(lv_obj_t * table)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
return ext->row_cnt;
}
/**
* Get the number of columns.
* @param table table pointer to a Table object
* @return number of columns.
*/
uint16_t lv_table_get_col_cnt(lv_obj_t * table)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
return ext->col_cnt;
}
/**
* Get the width of a column
* @param table table pointer to a Table object
* @param col_id id of the column [0 .. LV_TABLE_COL_MAX -1]
* @return width of the column
*/
lv_coord_t lv_table_get_col_width(lv_obj_t * table, uint16_t col_id)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
if(col_id >= LV_TABLE_COL_MAX) {
LV_LOG_WARN("lv_table_set_col_width: too big 'col_id'. Must be < LV_TABLE_COL_MAX.");
return 0;
}
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
return ext->col_w[col_id];
}
/**
* Get the text align of a cell
* @param table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @return LV_LABEL_ALIGN_LEFT (default in case of error) or LV_LABEL_ALIGN_CENTER or
* LV_LABEL_ALIGN_RIGHT
*/
lv_label_align_t lv_table_get_cell_align(lv_obj_t * table, uint16_t row, uint16_t col)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_set_cell_align: invalid row or column");
return LV_LABEL_ALIGN_LEFT; /*Just return with something*/
}
uint32_t cell = row * ext->col_cnt + col;
if(ext->cell_data[cell] == NULL)
return LV_LABEL_ALIGN_LEFT; /*Just return with something*/
else {
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell][0];
return format.s.align;
}
}
/**
* Get the type of a cell
* @param table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @return 1,2,3 or 4
*/
lv_label_align_t lv_table_get_cell_type(lv_obj_t * table, uint16_t row, uint16_t col)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_get_cell_type: invalid row or column");
return 1; /*Just return with something*/
}
uint32_t cell = row * ext->col_cnt + col;
if(ext->cell_data[cell] == NULL)
return 1; /*Just return with something*/
else {
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell][0];
return format.s.type + 1; /*0,1,2,3 is stored but user sees 1,2,3,4*/
}
}
/**
* Get the crop property of a cell
* @param table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @return true: text crop enabled; false: disabled
*/
lv_label_align_t lv_table_get_cell_crop(lv_obj_t * table, uint16_t row, uint16_t col)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_get_cell_crop: invalid row or column");
return false; /*Just return with something*/
}
uint32_t cell = row * ext->col_cnt + col;
if(ext->cell_data[cell] == NULL)
return false; /*Just return with something*/
else {
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell][0];
return format.s.crop;
}
}
/**
* Get the cell merge attribute.
* @param table table pointer to a Table object
* @param row id of the row [0 .. row_cnt -1]
* @param col id of the column [0 .. col_cnt -1]
* @return true: merge right; false: don't merge right
*/
bool lv_table_get_cell_merge_right(lv_obj_t * table, uint16_t row, uint16_t col)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
if(row >= ext->row_cnt || col >= ext->col_cnt) {
LV_LOG_WARN("lv_table_get_cell_merge_right: invalid row or column");
return false;
}
uint32_t cell = row * ext->col_cnt + col;
if(ext->cell_data[cell] == NULL)
return false;
else {
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell][0];
return format.s.right_merge ? true : false;
}
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Handle the drawing related tasks of the tables
* @param table pointer to an object
* @param clip_area the object will be drawn only in this area
* @param mode LV_DESIGN_COVER_CHK: only check if the object fully covers the 'mask_p' area
* (return 'true' if yes)
* LV_DESIGN_DRAW: draw the object (always return 'true')
* LV_DESIGN_DRAW_POST: drawing after every children are drawn
* @param return an element of `lv_design_res_t`
*/
static lv_design_res_t lv_table_design(lv_obj_t * table, const lv_area_t * clip_area, lv_design_mode_t mode)
{
/*Return false if the object is not covers the mask_p area*/
if(mode == LV_DESIGN_COVER_CHK) {
return ancestor_design(table, clip_area, mode);
}
/*Draw the object*/
else if(mode == LV_DESIGN_DRAW_MAIN) {
/*Draw the background*/
ancestor_design(table, clip_area, mode);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
lv_coord_t h_row;
lv_point_t txt_size;
lv_area_t cell_area;
lv_area_t txt_area;
lv_txt_flag_t txt_flags;
lv_style_int_t bg_top = lv_obj_get_style_pad_top(table, LV_TABLE_PART_BG);
lv_style_int_t bg_left= lv_obj_get_style_pad_left(table, LV_TABLE_PART_BG);
lv_draw_rect_dsc_t rect_dsc[LV_TABLE_CELL_STYLE_CNT];
lv_draw_label_dsc_t label_dsc[LV_TABLE_CELL_STYLE_CNT];
lv_draw_line_dsc_t line_dsc[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t cell_left[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t cell_right[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t cell_top[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t cell_bottom[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t letter_space[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t line_space[LV_TABLE_CELL_STYLE_CNT];
const lv_font_t * font[LV_TABLE_CELL_STYLE_CNT];
uint16_t i;
for(i = 0; i < LV_TABLE_CELL_STYLE_CNT; i++) {
lv_draw_rect_dsc_init(&rect_dsc[i]);
lv_obj_init_draw_rect_dsc(table, LV_TABLE_PART_CELL1 + i, &rect_dsc[i]);
lv_draw_label_dsc_init(&label_dsc[i]);
lv_obj_init_draw_label_dsc(table, LV_TABLE_PART_CELL1 + i, &label_dsc[i]);
lv_draw_line_dsc_init(&line_dsc[i]);
lv_obj_init_draw_line_dsc(table, LV_TABLE_PART_CELL1 + i, &line_dsc[i]);
cell_left[i] = lv_obj_get_style_pad_left(table, LV_TABLE_PART_CELL1 + i);
cell_right[i] = lv_obj_get_style_pad_right(table, LV_TABLE_PART_CELL1 + i);
cell_top[i] = lv_obj_get_style_pad_top(table, LV_TABLE_PART_CELL1 + i);
cell_bottom[i] = lv_obj_get_style_pad_bottom(table, LV_TABLE_PART_CELL1 + i);
letter_space[i] = label_dsc[i].letter_space;
line_space[i] = label_dsc[i].line_space;
font[i] = label_dsc[i].font;
}
uint16_t col;
uint16_t row;
uint16_t cell = 0;
cell_area.y2 = table->coords.y1 + bg_top;
for(row = 0; row < ext->row_cnt; row++) {
h_row = get_row_height(table, row, font, letter_space, line_space,
cell_left, cell_right, cell_top, cell_bottom);
cell_area.y1 = cell_area.y2 + 1;
cell_area.y2 = cell_area.y1 + h_row - 1;
if(cell_area.y1 > clip_area->y2) return LV_DESIGN_RES_OK;
cell_area.x2 = table->coords.x1 + bg_left;
for(col = 0; col < ext->col_cnt; col++) {
lv_table_cell_format_t format;
if(ext->cell_data[cell]) {
format.format_byte = ext->cell_data[cell][0];
} else {
format.s.right_merge = 0;
format.s.align = LV_LABEL_ALIGN_LEFT;
format.s.type = 0;
format.s.crop = 1;
}
cell_area.x1 = cell_area.x2 + 1;
cell_area.x2 = cell_area.x1 + ext->col_w[col] - 1;
uint16_t col_merge = 0;
for(col_merge = 0; col_merge + col < ext->col_cnt - 1; col_merge++) {
if(ext->cell_data[cell + col_merge] != NULL) {
format.format_byte = ext->cell_data[cell + col_merge][0];
if(format.s.right_merge)
cell_area.x2 += ext->col_w[col + col_merge + 1];
else
break;
} else {
break;
}
}
if(cell_area.y2 < clip_area->y1) {
cell += col_merge + 1;
col += col_merge;
continue;
}
uint8_t cell_type = format.s.type;
/*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);
cell_area_border.x2 += rect_dsc[cell_type].border_width / 2 + (rect_dsc[cell_type].border_width & 0x1);
cell_area_border.y2 += rect_dsc[cell_type].border_width / 2 + (rect_dsc[cell_type].border_width & 0x1);
lv_draw_rect(&cell_area_border, clip_area, &rect_dsc[cell_type]);
if(ext->cell_data[cell]) {
txt_area.x1 = cell_area.x1 + cell_left[cell_type];
txt_area.x2 = cell_area.x2 - cell_right[cell_type];
txt_area.y1 = cell_area.y1 + cell_top[cell_type];
txt_area.y2 = cell_area.y2 - cell_bottom[cell_type];
/*Align the content to the middle if not cropped*/
if(format.s.crop == 0) {
txt_flags = LV_TXT_FLAG_NONE;
} else {
txt_flags = LV_TXT_FLAG_EXPAND;
}
lv_txt_get_size(&txt_size, ext->cell_data[cell] + 1, label_dsc[cell_type].font,
label_dsc[cell_type].letter_space, label_dsc[cell_type].line_space,
lv_area_get_width(&txt_area), txt_flags);
/*Align the content to the middle if not cropped*/
if(format.s.crop == 0) {
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;
}
label_dsc[cell_type].flag = 0;
switch(format.s.align) {
default:
case LV_LABEL_ALIGN_LEFT: label_dsc[cell_type].flag |= LV_TXT_FLAG_NONE; break;
case LV_LABEL_ALIGN_RIGHT: label_dsc[cell_type].flag |= LV_TXT_FLAG_RIGHT; break;
case LV_LABEL_ALIGN_CENTER: label_dsc[cell_type].flag |= LV_TXT_FLAG_CENTER; break;
}
lv_area_t label_mask;
bool label_mask_ok;
label_mask_ok = lv_area_intersect(&label_mask, clip_area, &cell_area);
if(label_mask_ok) {
lv_draw_label(&txt_area, &label_mask, &label_dsc[cell_type], ext->cell_data[cell] + 1, NULL);
}
/*Draw lines after '\n's*/
lv_point_t p1;
lv_point_t p2;
p1.x = cell_area.x1;
p2.x = cell_area.x2;
uint16_t i;
for(i = 1; ext->cell_data[cell][i] != '\0'; i++) {
if(ext->cell_data[cell][i] == '\n') {
ext->cell_data[cell][i] = '\0';
lv_txt_get_size(&txt_size, ext->cell_data[cell] + 1, label_dsc[cell_type].font,
label_dsc[cell_type].letter_space, label_dsc[cell_type].line_space,
lv_area_get_width(&txt_area), txt_flags);
p1.y = txt_area.y1 + txt_size.y + label_dsc[cell_type].line_space / 2;
p2.y = txt_area.y1 + txt_size.y + label_dsc[cell_type].line_space / 2;
lv_draw_line(&p1, &p2, clip_area, &line_dsc[cell_type]);
ext->cell_data[cell][i] = '\n';
}
}
}
cell += col_merge + 1;
col += col_merge;
}
}
}
/*Post draw when the children are drawn*/
else if(mode == LV_DESIGN_DRAW_POST) {
ancestor_design(table, clip_area, mode);
}
return LV_DESIGN_RES_OK;
}
/**
* Signal function of the table
* @param table pointer to a table 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_table_signal(lv_obj_t * table, lv_signal_t sign, void * param)
{
lv_res_t res;
if(sign == LV_SIGNAL_GET_STYLE) {
lv_get_style_info_t * info = param;
info->result = lv_table_get_style(table, info->part);
if(info->result != NULL) return LV_RES_OK;
else return ancestor_signal(table, sign, param);
}
/* Include the ancient signal function */
res = ancestor_signal(table, sign, param);
if(res != LV_RES_OK) return res;
if(sign == LV_SIGNAL_GET_TYPE) return lv_obj_handle_get_type_signal(param, LV_OBJX_NAME);
if(sign == LV_SIGNAL_CLEANUP) {
/*Free the cell texts*/
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
uint16_t cell;
for(cell = 0; cell < ext->col_cnt * ext->row_cnt; cell++) {
if(ext->cell_data[cell]) {
lv_mem_free(ext->cell_data[cell]);
ext->cell_data[cell] = NULL;
}
}
if(ext->cell_data != NULL)
lv_mem_free(ext->cell_data);
}
else if(sign == LV_SIGNAL_STYLE_CHG) {
refr_size(table);
}
return res;
}
/**
* Get the style descriptor of a part of the object
* @param table pointer the object
* @param part the part from. (LV_TABLE_PART_...)
* @return pointer to the style descriptor of the specified part
*/
static lv_style_list_t * lv_table_get_style(lv_obj_t * table, uint8_t part)
{
LV_ASSERT_OBJ(table, LV_OBJX_NAME);
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
lv_style_list_t * style_dsc_p;
switch(part) {
case LV_TABLE_PART_BG:
style_dsc_p = &table->style_list;
break;
case LV_TABLE_PART_CELL1:
style_dsc_p = &ext->cell_style[0];
break;
case LV_TABLE_PART_CELL2:
style_dsc_p = &ext->cell_style[1];
break;
case LV_TABLE_PART_CELL3:
style_dsc_p = &ext->cell_style[2];
break;
case LV_TABLE_PART_CELL4:
style_dsc_p = &ext->cell_style[3];
break;
default:
style_dsc_p = NULL;
}
return style_dsc_p;
}
static void refr_size(lv_obj_t * table)
{
lv_coord_t h = 0;
lv_coord_t w = 0;
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
uint16_t i;
for(i = 0; i < ext->col_cnt; i++) {
w += ext->col_w[i];
}
lv_style_int_t cell_left[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t cell_right[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t cell_top[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t cell_bottom[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t letter_space[LV_TABLE_CELL_STYLE_CNT];
lv_style_int_t line_space[LV_TABLE_CELL_STYLE_CNT];
const lv_font_t * font[LV_TABLE_CELL_STYLE_CNT];
for(i = 0; i < LV_TABLE_CELL_STYLE_CNT; i++) {
cell_left[i] = lv_obj_get_style_pad_left(table, LV_TABLE_PART_CELL1 + i);
cell_right[i] = lv_obj_get_style_pad_right(table, LV_TABLE_PART_CELL1 + i);
cell_top[i] = lv_obj_get_style_pad_top(table, LV_TABLE_PART_CELL1 + i);
cell_bottom[i] = lv_obj_get_style_pad_bottom(table, LV_TABLE_PART_CELL1 + i);
letter_space[i] = lv_obj_get_style_text_letter_space(table, LV_TABLE_PART_CELL1 + i);
line_space[i] = lv_obj_get_style_text_line_space(table, LV_TABLE_PART_CELL1 + i);
font[i] = lv_obj_get_style_text_font(table, LV_TABLE_PART_CELL1 + i);
}
for(i = 0; i < ext->row_cnt; i++) {
h += get_row_height(table, i, font, letter_space, line_space,
cell_left, cell_right, cell_top, cell_bottom);
}
lv_style_int_t bg_top = lv_obj_get_style_pad_top(table, LV_TABLE_PART_BG);
lv_style_int_t bg_bottom= lv_obj_get_style_pad_bottom(table, LV_TABLE_PART_BG);
lv_style_int_t bg_left = lv_obj_get_style_pad_left(table, LV_TABLE_PART_BG);
lv_style_int_t bg_right= lv_obj_get_style_pad_right(table, LV_TABLE_PART_BG);
w += bg_left + bg_right;
h += bg_top + bg_bottom;
lv_obj_set_size(table, w + 1, h + 1);
}
static lv_coord_t get_row_height(lv_obj_t * table, uint16_t row_id, const lv_font_t ** font, lv_style_int_t * letter_space, lv_style_int_t * line_space,
lv_style_int_t * cell_left, lv_style_int_t * cell_right, lv_style_int_t * cell_top, lv_style_int_t * cell_bottom)
{
lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
lv_point_t txt_size;
lv_coord_t txt_w;
uint16_t row_start = row_id * ext->col_cnt;
uint16_t cell;
uint16_t col;
lv_coord_t h_max = lv_font_get_line_height(font[0]) + cell_top[0] + cell_bottom[0];
for(cell = row_start, col = 0; cell < row_start + ext->col_cnt; cell++, col++) {
if(ext->cell_data[cell] != NULL) {
txt_w = ext->col_w[col];
uint16_t col_merge = 0;
for(col_merge = 0; col_merge + col < ext->col_cnt - 1; col_merge++) {
if(ext->cell_data[cell + col_merge] != NULL) {
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell + col_merge][0];
if(format.s.right_merge)
txt_w += ext->col_w[col + col_merge + 1];
else
break;
} else {
break;
}
}
lv_table_cell_format_t format;
format.format_byte = ext->cell_data[cell][0];
uint8_t cell_type = format.s.type;
/*With text crop assume 1 line*/
if(format.s.crop) {
h_max = LV_MATH_MAX(lv_font_get_line_height(font[cell_type]) + cell_top[cell_type] + cell_bottom[cell_type],
h_max);
}
/*Without text crop calculate the height of the text in the cell*/
else {
txt_w -= cell_left[cell_type] + cell_right[cell_type];
lv_txt_get_size(&txt_size, ext->cell_data[cell] + 1, font[cell_type],
letter_space[cell_type], line_space[cell_type], txt_w, LV_TXT_FLAG_NONE);
h_max = LV_MATH_MAX(txt_size.y + cell_top[cell_type] + cell_bottom[cell_type], h_max);
cell += col_merge;
col += col_merge;
}
}
}
return h_max;
}
#endif
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