Subversion Repositories Kolibri OS

/* 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 

#include 

#include "json/json.h"

#include 

#include 

#include 

#include 

#define VERSION  "Weather 1.3"

enum BUTTONS{

    BTN_QUIT = 1,

    BTN_UPDATE = 2

};

#define START_YPOS 34

#define UTF8_W 8

#define CP866_W 6

#define JSON_OBJ(X) value->u.object.values[X]

#define OK 200

unsigned WINDOW_W = 200;

#define API       "api.openweathermap.org/data/2.5/weather?q=%s&appid=%s&units=%s&lang=%s"

#define IMAGE_URL "openweathermap.org/img/w/%s.png"

Image *image;

Image *blend;

char  *units;

unsigned char char_size=1;

char *wind_speed_str, *pressure_str, *visibility_str, *humidity_str, *update_str;

char lang[3]="en";

char format_temp_str[6];

char full_url[512];

char full_url_image[256];

char temp_char='K';

struct kolibri_system_colors sys_color_table;

pos_t win_pos;

#pragma pack(push,1)

struct open_weather_data{

    char    City[100];

    int     wind_speed;

    int     wind_deg;

    int     pressure;

    int     humidity;

    char    weath_desc[100];

    int     visibility;

    int     timezone;

    char    image_code[4];

    int     temp;

}myw;

#pragma pack(pop)

void notify_show(char *text)

{

   start_app("/sys/@notify", text);

}

void* safe_malloc(size_t size)

{

    void *p=user_alloc(size);

    if(p==NULL){

       notify_show("'Memory allocation error!' -E");

       exit(0);

    }else{

        return p;

    }

}

char tmp_buff[100];

static void draw_format_text_sys(int x, int y, color_t color, const char *format_str, ... )

{

    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, struct open_weather_data* weather)

{

    for(int i=0; iu.object.length; i++){

        if(!strcmp(JSON_OBJ(i).name, "main")){

            if(JSON_OBJ(i).value->u.object.values[0].value->type==json_double)

            {

                weather->temp = (int)JSON_OBJ(i).value->u.object.values[0].value->u.dbl;

            }else{

                weather->temp = JSON_OBJ(i).value->u.object.values[0].value->u.integer;

            }

            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")){

            strcpy(weather->City,JSON_OBJ(i).value->u.string.ptr);

        }

        if(!strcmp(JSON_OBJ(i).name, "weather")){

           strcpy(weather->weath_desc, JSON_OBJ(i).value->u.array.values[0]->u.object.values[2].value->u.string.ptr);

           strcpy(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")){

            if(JSON_OBJ(i).value->u.object.values[0].value->type==json_double)

            {

                weather->wind_speed = (int)JSON_OBJ(i).value->u.object.values[0].value->u.dbl;

            }else{

                weather->wind_speed = JSON_OBJ(i).value->u.object.values[0].value->u.integer;

            }

        }

        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);

            user_free(errmsg);

        }

    }

}

http_msg* get_json(char *City, char *Token, char* Units)

{

    sprintf(full_url, API, City, Token, Units, lang);

    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 {

        user_free(h->content_ptr);

        user_free(h);

        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* image2 = img_scale(image, 0, 0, 50, 50, NULL, LIBIMG_SCALE_STRETCH , LIBIMG_INTER_BILINEAR, 64, 64);

        img_blend(blend, image2, 0, 0, 0, 0, 64, 64);  // Blending images to display the alpha channel.

        img_destroy(image);

        img_destroy(image2);

    }else{

       notify_show("'Image not loaded!!' -W");

    }

    user_free(h->content_ptr);

    user_free(h);

}

void RedrawGUI()

{

    begin_draw();

    int new_win_w = (strlen(myw.City)/char_size+10)*(UTF8_W+char_size-1);

    if(new_win_w

        new_win_w=WINDOW_W;

    }

    sys_create_window(win_pos.x, win_pos.y, new_win_w, START_YPOS+200, VERSION, sys_color_table.work_area, 0x14);

    draw_format_text_sys(20, START_YPOS, 0xB0000000 | sys_color_table.work_text, "%s (UTC%+d)", myw.City, myw.timezone);

    draw_format_text_sys(21, START_YPOS, 0xB0000000 | sys_color_table.work_text, "%s (UTC%+d)", myw.City, myw.timezone);

    img_draw(blend, 10, START_YPOS+30, 64,64,0,0);

    draw_format_text_sys(20, START_YPOS+20, 0xb0000000 | sys_color_table.work_text, myw.weath_desc);

    draw_format_text_sys(21, START_YPOS+20, 0xb0000000 | sys_color_table.work_text, myw.weath_desc);

    draw_format_text_sys(100, START_YPOS+45, 0xb1000000 | sys_color_table.work_text, format_temp_str, myw.temp);

    draw_format_text_sys(101, START_YPOS+46, 0xb1000000 | sys_color_table.work_text, format_temp_str, myw.temp);

    draw_format_text_sys(20, START_YPOS+80,  0xb0000000 | sys_color_table.work_text, pressure_str,myw.pressure);

    draw_format_text_sys(20, START_YPOS+100, 0xb0000000 | sys_color_table.work_text, humidity_str, myw.humidity, "%");

    draw_format_text_sys(20, START_YPOS+120, 0xb0000000 | sys_color_table.work_text, wind_speed_str, myw.wind_speed);

    draw_format_text_sys(20, START_YPOS+140, 0xb0000000 | sys_color_table.work_text, visibility_str, myw.visibility);

    define_button(X_W(new_win_w/2-60,120), Y_H(START_YPOS+160,30), BTN_UPDATE, sys_color_table.work_button);

    draw_text_sys(update_str, (new_win_w/2)-(UTF8_W*strlen(update_str)/2/char_size), START_YPOS+170, 0, 0xb0000000 | 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; iu.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(!strcmp(JSON_OBJ(i).name, "Celsius")){

            if(JSON_OBJ(i).value->u.boolean){

                units = "metric";

                temp_char = 'C';

            }else{

                units = "imperial";

                temp_char = 'F';

            }

        }

        if(!strcmp(JSON_OBJ(i).name, "Lang")){

            strncpy(lang, JSON_OBJ(i).value->u.string.ptr,2);

        }

    }

    if(*City==NULL || *Token ==NULL){

         notify_show("'Invalid config!' -E");

         exit(0);

    }

    user_free(config_buff);

    fclose(config_j);

}

void Update(char* city, char* token)

{

    if(blend!=NULL){

        img_destroy(blend);

        blend = NULL;

    }

    memset(&myw, 0, sizeof myw);

    strcpy(myw.City,"None");

    strcpy(myw.weath_desc,"unknown");

    http_msg *json_file = get_json(city, token, units);

    if(json_file != NULL){

        json_value* value=json_parse (json_file->content_ptr, json_file->content_length);

        find_and_set(value, &myw);

        sprintf(format_temp_str, "%s°%c","%d",temp_char);

        get_image();

        json_value_free(value);

        user_free(json_file->content_ptr);

        user_free(json_file);

    }else{

       notify_show("'Connection error!' -E");

    }

}

void set_lang()

{

    if(!strcmp(lang, "ru")){

        wind_speed_str = "Скорость ветра: %d м/с";

        pressure_str   = "Давление:       %d гПa";

        visibility_str = "Видимость:      %d м";

        humidity_str   = "Влажность:      %d%s";

        update_str     = "Обновить";

        char_size = 2;

        WINDOW_W = 230;

    }else if(!strcmp(lang, "de")){

        wind_speed_str = "Windgeschwindigkeit: %d m/s";

        pressure_str   = "Druck:               %d hPa";

        visibility_str = "Sichtbarkeit:        %d m";

        humidity_str   = "Luftfeuchtigkeit:    %d%s";

        WINDOW_W = 270;

        update_str     = "Aktualisieren";

    }else{

        pressure_str   = "Pressure:   %d hPa";

        humidity_str   = "Humidity:   %d%s";

        visibility_str = "Visibility: %d m";

        wind_speed_str = "Wind speed: %d m/s";

        update_str     = "Refresh";

    }

}

int main(){

    win_pos = get_mouse_pos(0);

    if(!kolibri_libimg_init()){

        notify_show("Libimg.obj not loaded!' -E");

        exit(0);

    }

    get_system_colors(&sys_color_table);

    char *City = NULL;

    char *Token = NULL;

    get_config(&City, &Token);

    set_lang();

    Update(City,Token);

    while(1){

        switch(get_os_event()){

            case KOLIBRI_EVENT_NONE:

                break;

            case KOLIBRI_EVENT_REDRAW:

                RedrawGUI();

                break;

            case KOLIBRI_EVENT_BUTTON:

                switch (get_os_button()){

                    case BTN_UPDATE:

                        Update(City, Token);

                        RedrawGUI();

                        break;

                    case BTN_QUIT:

                        exit(0);

                        break;

                }

        }

    }

    return 0;

}