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Regard whitespace Rev 8552 → Rev 8553

/programs/other/Weather/weather.c
0,0 → 1,248
/* Copyright (C) 2019-2021 Logaev Maxim (turbocat2001), GPLv2 */
 
/*
Info: App uses api from openweathermap.org.
The standard configuration uses my token and the city of Moscow.
You can always change it in the weather.json file.
If you use UTF-8 encoding, then city names can be entered in different languages!
*/
 
#include <stdio.h>
#include <string.h>
#include "json/json.h"
#include <kos32sys1.h>
#include <kolibrisys.h>
#include <clayer/http.h>
#include <clayer/libimg.h>
 
#define VERSION "Weather 1.0b"
 
enum BUTTONS{
BTN_QUIT = 1,
BTN_UPDATE = 2
};
 
#define JSON_OBJ(X) value->u.object.values[X]
#define OK 200
#define API "http://api.openweathermap.org/data/2.5/weather?q=%s&appid=%s&units=metric"
#define IMAGE_URL "http://openweathermap.org/img/w/%s.png"
#define START_YPOS 34
 
Image *image;
char full_url[256];
char full_url_image[256];
struct kolibri_system_colors sys_color_table;
 
#pragma pack(push,1)
typedef struct {
char *City;
float wind_speed;
//int wind_deg;
int pressure;
int humidity;
char *weath_main;
char *weath_desc;
int visibility;
int timezone;
char* image_code;
double temp;
}open_weather_data;
#pragma pack(pop)
 
open_weather_data myw;
 
void notify_show(char *text)
{
start_app("/sys/@notify", text);
}
 
void* safe_malloc(size_t size) // Безопасный malloc. Показывает уведомление об ошибке и закрывает программу если память не была выделена
{
void *p=malloc(size);
if(p==NULL){
notify_show("'Memory allocation error!' -E");
exit(0);
}else{
return p;
}
}
 
static void draw_format_text_sys(int x, int y, color_t color, const char *format_str, ... )
{
char tmp_buff[100];
va_list ap;
va_start (ap, format_str);
vsnprintf(tmp_buff, sizeof tmp_buff ,format_str, ap);
va_end(ap);
draw_text_sys(tmp_buff, x, y , 0, color);
}
 
void find_and_set(json_value *value, open_weather_data* weather)
{
for(int i=0; i<value->u.object.length; i++){
if(!strcmp(JSON_OBJ(i).name, "main")){
weather->temp = JSON_OBJ(i).value->u.object.values[0].value->u.dbl;
weather->pressure = JSON_OBJ(i).value->u.object.values[4].value->u.integer;
weather->humidity = JSON_OBJ(i).value->u.object.values[5].value->u.integer;
}
if(!strcmp(JSON_OBJ(i).name, "name")){
weather->City = JSON_OBJ(i).value->u.string.ptr;
}
if(!strcmp(JSON_OBJ(i).name, "weather")){
weather->weath_desc = JSON_OBJ(i).value->u.array.values[0]->u.object.values[2].value->u.string.ptr;
weather->image_code = JSON_OBJ(i).value->u.array.values[0]->u.object.values[3].value->u.string.ptr;
}
if(!strcmp(JSON_OBJ(i).name, "wind")){
weather->wind_speed = JSON_OBJ(i).value->u.object.values[0].value->u.dbl;
}
if(!strcmp(JSON_OBJ(i).name, "visibility")){
weather->visibility = JSON_OBJ(i).value->u.integer;
}
if(!strcmp(JSON_OBJ(i).name, "timezone")){
weather->timezone = JSON_OBJ(i).value->u.integer/60/60;
}
if(!strcmp(JSON_OBJ(i).name, "message")){
char *errmsg = safe_malloc(weather->timezone = JSON_OBJ(i).value->u.string.length+6);
sprintf(errmsg,"'%s!' -E", JSON_OBJ(i).value->u.string.ptr);
notify_show(errmsg);
}
}
}
 
http_msg* get_json(char *City, char *Token)
{
sprintf(full_url, API, City, Token);
http_msg *h = http_get(full_url, 0, HTTP_FLAG_BLOCK, "");
http_long_receive(h);
if (h->status == OK || h->status == 404) {
return h;
} else {
return NULL;
}
}
 
void get_image(){
sprintf(full_url_image, IMAGE_URL, myw.image_code);
http_msg *h= http_get(full_url_image, 0, HTTP_FLAG_BLOCK, "");
http_long_receive(h);
if (h->status == OK) {
image = img_decode(h->content_ptr, h->content_length, 0); // Decode RAW data to Image data
if (image->Type != IMAGE_BPP32) {
image = img_convert(image, NULL, IMAGE_BPP32, 0, 0); // Convert image to format BPP32
if (!image) {
notify_show("'Convetring image error!' -E");
exit(0);
}
}
//blend = img_create(64, 64, IMAGE_BPP32); // Create an empty layer
//img_fill_color(blend, 64, 64, sys_color_table.work_area); // Fill the layer with one color
image = img_scale(image, 0, 0, 50, 50, NULL, LIBIMG_SCALE_STRETCH , LIBIMG_INTER_BILINEAR, 64, 64);
//img_blend(blend, image, 0, 0, 0, 0, 64, 64); // Blending images to display the alpha channel.
}else{
notify_show("'Image not loaded!!' -W");
}
}
 
void RedrawGUI() //Рисуем окно
{
char buff[1000];
pos_t win_pos = get_mouse_pos(0); // Получаем координаты курсора
begin_draw(); //Начинаем рисование интерфейса )
sys_create_window(win_pos.x, win_pos.y, 220, START_YPOS+200, VERSION, 0xffffff, 0x14); // Создаём окно.
 
draw_format_text_sys(10, START_YPOS, 0xB0000000 /*| sys_color_table.work_text*/, "%s (UTC%+d)\0", myw.City, myw.timezone);
draw_format_text_sys(11, START_YPOS, 0xB0000000 /*| sys_color_table.work_text */, "%s (UTC%+d)\0", myw.City, myw.timezone);
 
img_draw(image, 10, START_YPOS+30, 64,64,0,0);
 
draw_format_text_sys(10, START_YPOS+20, 0xb0000000 /* | sys_color_table.work_text */, myw.weath_desc);
draw_format_text_sys(11, START_YPOS+20, 0xb0000000 /*| sys_color_table.work_text */, myw.weath_desc);
 
draw_format_text_sys(90, START_YPOS+45, 0xB1000000 /*| sys_color_table.work_text*/, "%.1f °C", myw.temp);
draw_format_text_sys(91, START_YPOS+46, 0xB1000000 /*| sys_color_table.work_text*/, "%.1f °C", myw.temp);
 
draw_format_text_sys(10, START_YPOS+80, 0x90000000 /*| sys_color_table.work_text*/, "Pressure: %d hPa",myw.pressure);
draw_format_text_sys(10, START_YPOS+100, 0x90000000 /* | sys_color_table.work_text*/,"Humidity: %d %s", myw.humidity, "%");
draw_format_text_sys(10, START_YPOS+120, 0x90000000 /*| sys_color_table.work_text*/, "Wind speed: %.1f m/s", myw.wind_speed);
draw_format_text_sys(10, START_YPOS+140, 0x90000000 /*| sys_color_table.work_text*/, "Visibility: %d m", myw.visibility);
define_button(X_W(65,80), Y_H(START_YPOS+160,30), BTN_UPDATE, sys_color_table.work_button);
draw_text_sys("Update",80 , START_YPOS+170, 0, 0x90000000 | sys_color_table.work_button_text);
end_draw();
}
 
void get_config(char **City, char **Token)
{
FILE *config_j = fopen("weather.json", "rb");
if(config_j==NULL){
notify_show("'Configuration file not found!' -E");
exit(0);
}
size_t size = _ksys_get_filesize("weather.json");
char *config_buff = safe_malloc(size+1);
if(size != fread(config_buff, sizeof(char), size, config_j)){
notify_show("'The configuration file was not fully read!' -E");
exit(0);
}
json_value* value =json_parse (config_buff, size);
for(int i=0; i<value->u.object.length; i++){
if(!strcmp(JSON_OBJ(i).name, "Location")){
*City = JSON_OBJ(i).value->u.string.ptr;
}
if(!strcmp(JSON_OBJ(i).name, "Token")){
*Token = JSON_OBJ(i).value->u.string.ptr;
}
}
if(*City==NULL || *Token ==NULL){
notify_show("'Invalid config!!' -E");
exit(0);
}
free(config_buff);
}
 
void Update(char* city, char* token)
{
memset(&myw, 0, sizeof myw);
myw.City="None";
myw.weath_desc="unknown";
http_msg *json_file = get_json(city, token);
if(json_file != NULL){
json_value* value =json_parse (json_file->content_ptr, json_file->content_length);
find_and_set(value, &myw);
get_image();
}else{
notify_show("'Connection error!' -E");
}
}
 
int main(){
kolibri_libimg_init();
get_system_colors(&sys_color_table);
char *City = NULL;
char *Token = NULL;
get_config(&City, &Token);
Update(City,Token);
while(1){
switch(get_os_event()){
case KOLIBRI_EVENT_NONE:
break;
case KOLIBRI_EVENT_REDRAW:
RedrawGUI();
break;
case KOLIBRI_EVENT_BUTTON: // Событие обработки кнопок
switch (get_os_button()){
case BTN_UPDATE:
Update(City, Token);
RedrawGUI();
break;
case BTN_QUIT:
exit(0);
break;
}
}
}
return 0;
}