138 lines
4.5 KiB
C++
138 lines
4.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Tyler Perkins
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// 19-9-21
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// weather panel
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//
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#include "weather.hpp"
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#include "weather_config.hpp"
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using namespace dashboard::panel;
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///////////////////////////////////////////////////////////////////////////////
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// Constructors ///////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////
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weather::weather(){
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std::cerr << "WEATHER CONSTRUCTOR\n";
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_time_on_screen = WEATHER_DEFAULT_ON_SCREEN_TIME;
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_update_interval = std::chrono::milliseconds{WEATHER_UPDATE_INTERVAL};
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//let set to default, will make it so it updates the texture ASAP
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//_last_update;
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_rss = rss_utils::rss(WEATHER_URL_SOURCE);
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}
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weather::~weather(){
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std::cerr << "WEATHER DECONSTRUCTOR\n";
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if(_texture != nullptr){
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SDL_DestroyTexture(_texture);
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// Draw function //////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////
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void weather::draw(){
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//create the texture if this is the first time running draw
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if(_texture == nullptr){
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initTexture();
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update();
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update_texture();
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}
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//check if its time to update
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if((std::chrono::high_resolution_clock::now() - _last_update)
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> _update_interval){
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update();
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update_texture();
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}
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SDL_RenderCopy(board::getRenderer(), _texture, NULL, NULL);
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}
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///////////////////////////////////////////////////////////////////////////////
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// Helper functions ///////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////
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// Update the information of the obj
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// This DOES NOT update the display
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void weather::update() {
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std::cerr << "WEATHER::UPDATE\n";
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_last_update = std::chrono::high_resolution_clock::now();
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//fetch updates
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_rss.update();
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//update internal state
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current_desc = _rss.getItem(0).getDescription();
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current_desc = current_desc.substr(0,current_desc.find('<'));
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std::cerr << "Current Description : (\" " << current_desc << "\")\n";
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tommorow_desc = _rss.getItem(1).getDescription();
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tommorow_desc = tommorow_desc.substr(0,tommorow_desc.find('<'));
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std::cerr << "Tommorow Description : (\" " << tommorow_desc << "\")\n";
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}
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///////////////////////////////////////
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// Update the texture that is being
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// displayed, based on data in
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// _rss
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void weather::update_texture(){
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std::cerr << "WEATHER::UPDATE_TEXTURE\n";
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SDL_Rect tgt;
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SDL_SetRenderTarget(board::getRenderer(), _texture);
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SDL_RenderClear(board::getRenderer());
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//title
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tgt.x = 50;
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tgt.y = 50;
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TTF_SizeText(board::getFont({ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }),
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"Today's Weather",
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&tgt.w, &tgt.h);
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SDL_RenderCopy(board::getRenderer(),
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board::getString("Today's Weather",
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{ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }), NULL, &tgt);
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//current weather
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TTF_SizeText(board::getFont({ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }),
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current_desc.c_str(),
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&tgt.w, &tgt.h);
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tgt.x = SCREEN_WIDTH / 2 - (tgt.w / 2);
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tgt.y = SCREEN_HEIGHT / 2 - (tgt.h / 2);
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SDL_RenderCopy(board::getRenderer(),
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board::getString(current_desc.c_str(),
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{ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }), NULL, &tgt);
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//tommorow's weather
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TTF_SizeText(board::getFont({ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }),
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tommorow_desc.c_str(),
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&tgt.w, &tgt.h);
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tgt.x = SCREEN_WIDTH / 2 - (tgt.w / 2);
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tgt.y = SCREEN_HEIGHT / 2 - (tgt.h / 2) + 50;
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SDL_RenderCopy(board::getRenderer(),
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board::getString(tommorow_desc.c_str(),
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{ "Roboto_Mono/RobotoMono-Medium.ttf", 50 }), NULL, &tgt);
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SDL_SetRenderTarget(board::getRenderer(), NULL);
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}
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///////////////////////////////////////
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// Lazy load the texture object
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// This is to make sure that all of SDL
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// is init before we attempt to draw anything
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void weather::initTexture(){
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if(_texture == nullptr){
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_texture = SDL_CreateTexture(board::getRenderer(),
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SDL_PIXELFORMAT_RGBA8888,
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SDL_TEXTUREACCESS_TARGET,
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SCREEN_WIDTH, SCREEN_HEIGHT);
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SDL_SetTextureBlendMode(_texture, SDL_BLENDMODE_BLEND);
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}
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}
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