mirror of
https://github.com/lvgl/lvgl.git
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308 lines
8.5 KiB
C
308 lines
8.5 KiB
C
/**
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* @file lv_table.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "lv_table.h"
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#if USE_LV_TABLE != 0
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#include "../lv_misc/lv_txt.h"
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#include "../lv_misc/lv_math.h"
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#include "../lv_draw/lv_draw_label.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static bool lv_table_design(lv_obj_t * table, const lv_area_t * mask, lv_design_mode_t mode);
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static lv_res_t lv_table_signal(lv_obj_t * table, lv_signal_t sign, void * param);
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static lv_coord_t get_row_height(lv_obj_t * table, uint16_t row_id);
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/**********************
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* STATIC VARIABLES
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**********************/
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static lv_signal_func_t ancestor_signal;
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static lv_design_func_t ancestor_scrl_design;
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static const char * cell_data_example[] = {"r1", "rc11", "rc12",
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"ro row 2", "rc21", "rc22",
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"row3", "rc31", "rc32",
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"row4", "rc41", "rc42"};
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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/**
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* Create a table object
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* @param par pointer to an object, it will be the parent of the new table
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* @param copy pointer to a table object, if not NULL then the new object will be copied from it
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* @return pointer to the created table
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*/
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lv_obj_t * lv_table_create(lv_obj_t * par, const lv_obj_t * copy)
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{
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LV_LOG_TRACE("table create started");
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/*Create the ancestor of table*/
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lv_obj_t * new_table = lv_obj_create(par, copy);
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lv_mem_assert(new_table);
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if(new_table == NULL) return NULL;
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/*Allocate the table type specific extended data*/
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lv_table_ext_t * ext = lv_obj_allocate_ext_attr(new_table, sizeof(lv_table_ext_t));
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lv_mem_assert(ext);
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if(ext == NULL) return NULL;
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if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_table);
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if(ancestor_scrl_design == NULL) ancestor_scrl_design = lv_obj_get_design_func(new_table);
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/*Initialize the allocated 'ext' */
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ext->cell_data = cell_data_example;
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ext->cell_style = &lv_style_pretty;
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ext->col_cnt = 3;
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ext->row_cnt = 4;
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ext->col_w[0] = 50;
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ext->col_w[1] = 70;
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ext->col_w[2] = 80;
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/*The signal and design functions are not copied so set them here*/
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lv_obj_set_signal_func(new_table, lv_table_signal);
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lv_obj_set_design_func(new_table, lv_table_design);
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/*Init the new table table*/
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if(copy == NULL) {
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}
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/*Copy an existing table*/
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else {
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lv_table_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
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/*Refresh the style with new signal function*/
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lv_obj_refresh_style(new_table);
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}
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LV_LOG_INFO("table created");
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return new_table;
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}
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/*======================
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* Add/remove functions
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*=====================*/
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/*
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* New object specific "add" or "remove" functions come here
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*/
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/*=====================
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* Setter functions
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*====================*/
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/*
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* New object specific "set" functions come here
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*/
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/**
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* Set a style of a table.
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* @param table pointer to table object
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* @param type which style should be set
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* @param style pointer to a style
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*/
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void lv_table_set_style(lv_obj_t * table, lv_table_style_t type, lv_style_t * style)
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{
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lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
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switch(type) {
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case LV_TABLE_STYLE_X:
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break;
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case LV_TABLE_STYLE_Y:
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break;
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}
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}
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/*=====================
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* Getter functions
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*====================*/
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/*
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* New object specific "get" functions come here
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*/
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/**
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* Get style of a table.
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* @param table pointer to table object
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* @param type which style should be get
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* @return style pointer to the style
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*/
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lv_style_t * lv_table_get_style(const lv_obj_t * table, lv_table_style_t type)
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{
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lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
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switch(type) {
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case LV_TABLE_STYLE_X:
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return NULL;
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case LV_TABLE_STYLE_Y:
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return NULL;
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default:
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return NULL;
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}
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/*To avoid warning*/
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return NULL;
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}
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/*=====================
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* Other functions
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*====================*/
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/*
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* New object specific "other" functions come here
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*/
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/**********************
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* STATIC FUNCTIONS
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**********************/
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/**
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* Handle the drawing related tasks of the tables
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* @param table pointer to an object
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* @param mask the object will be drawn only in this area
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* @param mode LV_DESIGN_COVER_CHK: only check if the object fully covers the 'mask_p' area
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* (return 'true' if yes)
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* LV_DESIGN_DRAW: draw the object (always return 'true')
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* LV_DESIGN_DRAW_POST: drawing after every children are drawn
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* @param return true/false, depends on 'mode'
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*/
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static bool lv_table_design(lv_obj_t * table, const lv_area_t * mask, lv_design_mode_t mode)
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{
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/*Return false if the object is not covers the mask_p area*/
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if(mode == LV_DESIGN_COVER_CHK) {
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return false;
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}
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/*Draw the object*/
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else if(mode == LV_DESIGN_DRAW_MAIN) {
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ancestor_scrl_design(table, mask, mode);
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lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
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lv_coord_t h_row;
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lv_point_t txt_size;
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lv_area_t cell_area;
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lv_area_t txt_area;
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uint16_t col;
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uint16_t row;
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uint16_t cell = 0;
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cell_area.y2 = table->coords.y1;
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for(row = 0; row < ext->row_cnt; row++) {
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h_row = get_row_height(table, row);
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cell_area.y1 = cell_area.y2;
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cell_area.y2 = cell_area.y1 + h_row;
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uint16_t col_x = 0;
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for(col = 0; col < ext->col_cnt; col++) {
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cell_area.x1 = table->coords.x1 + col_x;
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cell_area.x2 = cell_area.x1 + ext->col_w[col];
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txt_area.x1 = cell_area.x1 + ext->cell_style->body.padding.hor;
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txt_area.x2 = cell_area.x2 - ext->cell_style->body.padding.hor;
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txt_area.y1 = cell_area.y1 + ext->cell_style->body.padding.ver;
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txt_area.y2 = cell_area.y2 - ext->cell_style->body.padding.ver;
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lv_txt_get_size(&txt_size, ext->cell_data[cell], ext->cell_style->text.font,
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ext->cell_style->text.letter_space, ext->cell_style->text.line_space, lv_area_get_width(&txt_area), LV_TXT_FLAG_NONE);
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col_x += ext->col_w[col];
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lv_draw_rect(&cell_area, mask, ext->cell_style, LV_OPA_COVER);
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lv_draw_label(&txt_area, mask, ext->cell_style, LV_OPA_COVER, ext->cell_data[cell], LV_TXT_FLAG_NONE, NULL);
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cell++;
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}
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}
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}
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/*Post draw when the children are drawn*/
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else if(mode == LV_DESIGN_DRAW_POST) {
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}
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return true;
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}
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/**
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* Signal function of the table
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* @param table pointer to a table object
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* @param sign a signal type from lv_signal_t enum
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* @param param pointer to a signal specific variable
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* @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted
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*/
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static lv_res_t lv_table_signal(lv_obj_t * table, lv_signal_t sign, void * param)
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{
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lv_res_t res;
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/* Include the ancient signal function */
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res = ancestor_signal(table, sign, param);
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if(res != LV_RES_OK) return res;
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if(sign == LV_SIGNAL_CLEANUP) {
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/*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
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} else if(sign == LV_SIGNAL_GET_TYPE) {
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lv_obj_type_t * buf = param;
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uint8_t i;
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for(i = 0; i < LV_MAX_ANCESTOR_NUM - 1; i++) { /*Find the last set data*/
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if(buf->type[i] == NULL) break;
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}
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buf->type[i] = "lv_table";
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}
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return res;
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}
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static lv_coord_t get_row_height(lv_obj_t * table, uint16_t row_id)
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{
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lv_table_ext_t * ext = lv_obj_get_ext_attr(table);
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lv_point_t txt_size;
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lv_coord_t txt_w;
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uint16_t row_start = row_id * ext->col_cnt;
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uint16_t cell;
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uint16_t col;
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lv_coord_t h_max = 0;
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for(cell = row_start, col = 0; cell < row_start + ext->col_cnt; cell++, col ++) {
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txt_w = ext->col_w[col] - 2 * ext->cell_style->body.padding.hor;
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lv_txt_get_size(&txt_size, ext->cell_data[cell], ext->cell_style->text.font,
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ext->cell_style->text.letter_space, ext->cell_style->text.line_space, txt_w, LV_TXT_FLAG_NONE);
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h_max = LV_MATH_MAX(txt_size.y, h_max);
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}
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printf("row:%d, h:%d\n", row_id, h_max);
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return h_max + 2 * ext->cell_style->body.padding.ver;
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}
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#endif
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