implement basic calendar functionalites
This commit is contained in:
Gabor Kiss-Vamosi
478
lv_objx/lv_calendar.c
Normal file
478
lv_objx/lv_calendar.c
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@@ -0,0 +1,478 @@
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/**
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* @file lv_calendar.c
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*
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*/
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/* TODO Remove these instructions
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* Search an replace: calendar -> object normal name with lower case (e.g. button, label etc.)
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* calendar -> object short name with lower case(e.g. btn, label etc)
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* CALENDAR -> object short name with upper case (e.g. BTN, LABEL etc.)
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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_conf.h"
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#if USE_LV_CALENDAR != 0
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#include "lv_calendar.h"
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#include "../lv_draw/lv_draw.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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typedef enum
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{
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DAY_DRAW_PREV_MONTH,
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DAY_DRAW_ACT_MONTH,
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DAY_DRAW_NEXT_MONTH,
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}day_draw_state_t;
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static bool lv_calendar_design(lv_obj_t * calendar, const lv_area_t * mask, lv_design_mode_t mode);
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static lv_res_t lv_calendar_signal(lv_obj_t * calendar, lv_signal_t sign, void * param);
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static lv_coord_t get_header_height(lv_obj_t * calendar);
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static void draw_header(lv_obj_t * calendar, const lv_area_t * mask);
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static void draw_day_names(lv_obj_t * calendar, const lv_area_t * mask);
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static void draw_days(lv_obj_t * calendar, const lv_area_t * mask);
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static uint8_t get_day_of_week(uint32_t year, uint32_t month, uint32_t day);
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static const char * get_month_name(int32_t year, int32_t month);
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static uint8_t get_month_length(int32_t year, int32_t month);
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static uint8_t is_leap_year(uint32_t year);
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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_design;
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static const char * day_name[7] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
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static const char * month_name[12] = {"January", "February", "March", "April",
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"May", "June", "July", "August",
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"September", "October", "November", "December"};
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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 calendar object
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* @param par pointer to an object, it will be the parent of the new calendar
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* @param copy pointer to a calendar object, if not NULL then the new object will be copied from it
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* @return pointer to the created calendar
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*/
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lv_obj_t * lv_calendar_create(lv_obj_t * par, lv_obj_t * copy)
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{
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/*Create the ancestor of calendar*/
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lv_obj_t * new_calendar = lv_obj_create(par, copy);
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lv_mem_assert(new_calendar);
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/*Allocate the calendar type specific extended data*/
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lv_calendar_ext_t * ext = lv_obj_allocate_ext_attr(new_calendar, sizeof(lv_calendar_ext_t));
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lv_mem_assert(ext);
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if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_calendar);
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if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_calendar);
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/*Initialize the allocated 'ext' */
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ext->today.year = 2018;
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ext->today.month= 5;
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ext->today.day= 4;
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ext->showed_date.year = 2018;
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ext->showed_date.month = 5;
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ext->showed_date.day= 4;
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ext->style_main = &lv_style_pretty;
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ext->style_header = &lv_style_plain_color;
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ext->style_marked_days = &lv_style_plain_color;
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ext->style_inactive_days = &lv_style_btn_ina;
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ext->style_week_box = &lv_style_plain_color;
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ext->style_today_box = &lv_style_pretty_color;
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ext->style_day_names = &lv_style_pretty;
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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_calendar, lv_calendar_signal);
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lv_obj_set_design_func(new_calendar, lv_calendar_design);
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/*Init the new calendar calendar*/
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if(copy == NULL) {
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}
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/*Copy an existing calendar*/
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else {
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lv_calendar_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_calendar);
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}
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return new_calendar;
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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 calendar.
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* @param calendar pointer to calendar 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_calendar_set_style(lv_obj_t * calendar, lv_calendar_style_t type, lv_style_t *style)
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{
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lv_calendar_ext_t *ext = lv_obj_get_ext_attr(calendar);
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switch (type) {
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case LV_CALENDAR_STYLE_BG:
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ext->style_main = style;
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break;
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case LV_CALENDAR_STYLE_DAY_NAMES:
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ext->style_day_names = style;
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break;
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case LV_CALENDAR_STYLE_HEADER:
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ext->style_header = style;
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break;
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case LV_CALENDAR_STYLE_MARKED_DAYS:
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ext->style_marked_days = style;
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break;
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case LV_CALENDAR_STYLE_INACTIVE_DAYS:
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ext->style_inactive_days = style;
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break;
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case LV_CALENDAR_STYLE_TODAY_BOX:
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ext->style_today_box = style;
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break;
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case LV_CALENDAR_STYLE_WEEK_BOX:
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ext->style_week_box = style;
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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 calendar.
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* @param calendar pointer to calendar 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_calendar_get_style(lv_obj_t * calendar, lv_calendar_style_t type)
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{
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lv_calendar_ext_t *ext = lv_obj_get_ext_attr(calendar);
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switch (type) {
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case LV_CALENDAR_STYLE_BG: return ext->style_main;
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case LV_CALENDAR_STYLE_HEADER: return ext->style_header;
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case LV_CALENDAR_STYLE_DAY_NAMES: return ext->style_day_names;
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case LV_CALENDAR_STYLE_MARKED_DAYS: return ext->style_marked_days;
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case LV_CALENDAR_STYLE_INACTIVE_DAYS: return ext->style_inactive_days;
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case LV_CALENDAR_STYLE_WEEK_BOX: return ext->style_week_box;
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case LV_CALENDAR_STYLE_TODAY_BOX: return ext->style_today_box;
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default: 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 calendars
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* @param calendar 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_calendar_design(lv_obj_t * calendar, 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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lv_calendar_ext_t * ext = lv_obj_get_ext_attr(calendar);
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lv_draw_rect(&calendar->coords, mask, ext->style_main);
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draw_header(calendar, mask);
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draw_day_names(calendar, mask);
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draw_days(calendar, mask);
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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 calendar
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* @param calendar pointer to a calendar 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_calendar_signal(lv_obj_t * calendar, 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(calendar, 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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}
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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_calendar";
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}
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return res;
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}
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static lv_coord_t get_header_height(lv_obj_t * calendar)
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{
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lv_calendar_ext_t * ext = lv_obj_get_ext_attr(calendar);
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return lv_font_get_height(ext->style_header->text.font) + ext->style_header->body.padding.ver * 2;
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}
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static void draw_header(lv_obj_t * calendar, const lv_area_t * mask)
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{
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lv_calendar_ext_t * ext = lv_obj_get_ext_attr(calendar);
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lv_area_t header_area;
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header_area.x1 = calendar->coords.x1;
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header_area.x2 = calendar->coords.x2;
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header_area.y1 = calendar->coords.y1;
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header_area.y2 = calendar->coords.y1 + get_header_height(calendar);
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lv_draw_rect(&header_area, mask, ext->style_header);
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/*Add the month name*/
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// lv_point_t txt_size;
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// lv_txt_get_size(&txt_size, month_name[ext->showed_month.month - 1], ext->style_header->text.font,
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// ext->style_header->text.letter_space, ext->style_header->text.line_space, lv_obj_get_width(calendar), LV_TXT_FLAG_NONE);
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header_area.y1 += ext->style_header->body.padding.ver;
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header_area.y2 += ext->style_header->body.padding.ver;
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lv_draw_label(&header_area, mask, ext->style_header, month_name[ext->showed_date.month - 1], LV_TXT_FLAG_CENTER, NULL);
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// lv_coord_t * text_h = lv_
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}
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static void draw_day_names(lv_obj_t * calendar, const lv_area_t * mask)
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{
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lv_calendar_ext_t * ext = lv_obj_get_ext_attr(calendar);
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lv_coord_t hpad = ext->style_day_names->body.padding.hor;
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lv_coord_t w = lv_obj_get_width(calendar) - 2 * hpad;
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lv_coord_t box_w = w / 7;
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lv_area_t label_area;
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label_area.y1 = calendar->coords.y1 + get_header_height(calendar) + ext->style_day_names->body.padding.ver;
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label_area.y2 = label_area.y1 + lv_font_get_height(ext->style_day_names->text.font);
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uint32_t i;
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for(i = 0; i < 7; i++) {
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label_area.x1 = calendar->coords.x1 + (w * i) / 7 + hpad;
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label_area.x2 = label_area.x1 + box_w;
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lv_draw_label(&label_area, mask, ext->style_day_names, day_name[i], LV_TXT_FLAG_CENTER, NULL);
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}
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}
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static void draw_days(lv_obj_t * calendar, const lv_area_t * mask)
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{
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lv_calendar_ext_t * ext = lv_obj_get_ext_attr(calendar);
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lv_coord_t hpad = ext->style_day_names->body.padding.hor;
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lv_area_t label_area;
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label_area.y1 = calendar->coords.y1 + get_header_height(calendar) +
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ext->style_day_names->body.padding.ver + lv_font_get_height(ext->style_day_names->text.font) +
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ext->style_main->body.padding.ver;
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label_area.y2 = label_area.y1 + lv_font_get_height(ext->style_day_names->text.font);
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lv_coord_t w = lv_obj_get_width(calendar) - 2 * hpad;
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lv_coord_t h = calendar->coords.y2 - label_area.y1 - ext->style_main->body.padding.ver;
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lv_coord_t box_w = w / 7;
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lv_coord_t vert_space = (h - (6 * lv_font_get_height(ext->style_main->text.font))) / 5;
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uint32_t week;
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uint8_t day_cnt;
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uint8_t month_start_day = get_day_of_week(ext->showed_date.year, ext->showed_date.month, 1);
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day_draw_state_t draw_state; /*true: Not the prev. or next month is drawn*/
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lv_style_t * act_style;
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/*If starting with the first day of the week then the previous month is not visible*/
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if(month_start_day == 0) {
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day_cnt = 1;
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draw_state = DAY_DRAW_ACT_MONTH;
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act_style = ext->style_main;
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} else {
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draw_state = DAY_DRAW_PREV_MONTH;
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day_cnt = get_month_length(ext->showed_date.year, ext->showed_date.month - 1); /*Length of the previous month*/
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day_cnt -= month_start_day - 1; /*First visible number of the previous month*/
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act_style = ext->style_inactive_days;
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}
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bool today_shown = false;
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if(ext->showed_date.year == ext->today.year &&
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ext->showed_date.month == ext->today.month)
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{
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today_shown = true;
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}
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char buf[3];
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for(week = 0; week < 6; week++) {
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if(today_shown &&
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((draw_state == DAY_DRAW_ACT_MONTH && ext->today.day >= day_cnt && ext->today.day < day_cnt + 7) ||
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(draw_state == DAY_DRAW_PREV_MONTH && ext->today.day <= 7)))
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{
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lv_area_t week_box_area;
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lv_area_copy(&week_box_area, &label_area); /*'label_area' is already set for this row*/
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week_box_area.x1 = calendar->coords.x1 + ext->style_main->body.padding.hor - ext->style_week_box->body.padding.hor;
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week_box_area.x2 = calendar->coords.x2 - ext->style_main->body.padding.hor + ext->style_week_box->body.padding.hor;
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week_box_area.y1 -= ext->style_week_box->body.padding.ver;
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week_box_area.y2 += ext->style_week_box->body.padding.ver;
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lv_draw_rect(&week_box_area, mask, ext->style_week_box);
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}
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uint32_t day;
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for(day = 0; day < 7; day++) {
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if(draw_state == DAY_DRAW_PREV_MONTH && day == month_start_day) {
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draw_state = DAY_DRAW_ACT_MONTH;
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day_cnt = 1;
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act_style = ext->style_main;
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}
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if(draw_state == DAY_DRAW_ACT_MONTH &&
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day_cnt > get_month_length(ext->showed_date.year, ext->showed_date.month))
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{
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draw_state = DAY_DRAW_NEXT_MONTH;
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day_cnt = 1;
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act_style = ext->style_inactive_days;
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}
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label_area.x1 = calendar->coords.x1 + (w * day) / 7 + hpad;
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label_area.x2 = label_area.x1 + box_w;
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if(draw_state == DAY_DRAW_ACT_MONTH && today_shown && ext->today.day == day_cnt) {
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lv_area_t today_box_area;
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lv_area_copy(&today_box_area, &label_area);
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today_box_area.x1 = label_area.x1;
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today_box_area.x2 = label_area.x2;
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today_box_area.y1 = label_area.y1 - ext->style_today_box->body.padding.ver;
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today_box_area.y2 = label_area.y2 + ext->style_today_box->body.padding.ver;
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lv_draw_rect(&today_box_area, mask, ext->style_today_box);
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}
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sprintf(buf, "%d", day_cnt);
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lv_draw_label(&label_area, mask, act_style, buf, LV_TXT_FLAG_CENTER, NULL);
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||||
|
||||
day_cnt ++;
|
||||
|
||||
}
|
||||
|
||||
label_area.y1 += vert_space + lv_font_get_height(ext->style_main->text.font);
|
||||
label_area.y2 += vert_space + lv_font_get_height(ext->style_main->text.font);
|
||||
}
|
||||
}
|
||||
|
||||
static const char * get_month_name(int32_t year, int32_t month)
|
||||
{
|
||||
month --; /*Range of months id [1..12] but range of indexes is [0..11]*/
|
||||
if(month <=0) year--; /*Already in the previous year (won't be less then -12 to skip a whole year)*/
|
||||
if(month > 12) year++; /*ALready in the next year (won't be more then 12 to skip a whole year)*/
|
||||
month = month % 12;
|
||||
return month_name[month];
|
||||
}
|
||||
|
||||
static uint8_t get_month_length(int32_t year, int32_t month)
|
||||
{
|
||||
month --; /*Range of months id [1..12] but range of indexes is [0..11]*/
|
||||
if(month <=0) year--; /*Already in the previous year (won't be less then -12 to skip a whole year)*/
|
||||
if(month > 12) year++; /*ALready in the next year (won't be more then 12 to skip a whole year)*/
|
||||
month = month % 12;
|
||||
|
||||
/*month == 1 is february*/
|
||||
return (month == 1) ? (28 + is_leap_year(year)) : 31 - month % 7 % 2;
|
||||
|
||||
|
||||
}
|
||||
|
||||
static uint8_t is_leap_year(uint32_t year)
|
||||
{
|
||||
return (year % 4) || ((year % 100 == 0) && (year % 400)) ? 0 : 1;
|
||||
}
|
||||
|
||||
static uint8_t get_day_of_week(uint32_t year, uint32_t month, uint32_t day)
|
||||
{
|
||||
uint32_t a = month < 3 ? 1 : 0;
|
||||
uint32_t b = year - a;
|
||||
|
||||
uint32_t day_of_week = (day + (31 * (month - 2 + 12 * a) / 12) +
|
||||
b + (b / 4) - (b / 100) + (b / 400)) % 7;
|
||||
|
||||
return day_of_week;
|
||||
}
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user