mp-sfml/main.cc

#include <cstdio>
#include <SFML/System.hpp>
#include <SFML/Graphics.hpp>
#include <SFML/Window.hpp>
#include <spdlog/spdlog.h>
#include "UtilTool.h"

constexpr int CLIENT_WIDTH = 800;
constexpr int CLIENT_HEIGHT = 600;


int main(int argc, char** argv){
	spdlog::info("Current WorkDir Is: {}",argv[0]);
	if(argc != 2){
		spdlog::error("Usage: mp filename ");
		return 0;
	}
	if(!UtilTool::CheckFileIsImage(argv[1])){
		spdlog::info("Unsupport File Type: {}",argv[1]);
		return 0;
	}
	sf::Texture texture;
	texture.loadFromFile(argv[1]);
	sf::RenderWindow window(sf::VideoMode(CLIENT_WIDTH, CLIENT_HEIGHT), "mp");
	sf::Sprite sprite;
	sprite.setTexture(texture);
	auto imgSize = texture.getSize();
	auto scale = std::min(CLIENT_WIDTH/imgSize.x,CLIENT_HEIGHT/imgSize.y);
	sprite.setScale(scale, scale);
	bool running = true;

	while(running){
		sf::Event event;
		while(window.pollEvent(event)){
			if(event.type == sf::Event::Closed){
				running = false;
			}
			if(event.type == sf::Event::KeyPressed){
				if(event.key.code == sf::Keyboard::Escape){
					running = false;
				}
			}
			if(event.type == sf::Event::Resized){
				auto scale = std::min(event.size.width / imgSize.x, event.size.height / imgSize.y);
				sprite.setScale(scale, scale);
			}
		}
		window.clear();
		window.draw(sprite);
		window.display();
	}
	return 0;
}