cpp-game-engine/util/src/osx_env.mm

//
//  osx_env.mm
//  gameutils
//
//  Created by Sam Jaffe on 5/19/19.
//  Copyright © 2019 Sam Jaffe. All rights reserved.
//

#include "game/util/env.hpp"

#import <Cocoa/Cocoa.h>

#include "vector/vector.hpp"

namespace {
  NSUInteger encoding = NSUTF8StringEncoding;
  NSString* translate(std::string const & str) {
    return [NSString stringWithCString:str.c_str() encoding:encoding];
  }
}

namespace env {
  std::string resource_file(std::string const& path) {
    size_t dir_idx = path.find_last_of("/");
    size_t ext_idx = path.find_first_of(".");
    std::string base = path.substr(0, dir_idx);
    std::string name = path.substr(dir_idx + 1, ext_idx - (dir_idx + 1));
    std::string type = path.substr(ext_idx + 1);
    
    NSString* url = [[NSBundle mainBundle] pathForResource:translate(name)
                                                    ofType:translate(type)
                                               inDirectory:translate(base)];
    
    char const* abs_path = [url cStringUsingEncoding:encoding];
    return abs_path ? std::string(abs_path) : std::string();
  }
  
  namespace detail {
    math::vec2i init_screen() {
      NSRect frame = [[NSView focusView] frame];
      return make_vector(static_cast<int>(frame.size.width),
                         static_cast<int>(frame.size.height));
    }
    
    math::vec2i screenSize = init_screen();
    
    void resize_screen(math::vec2i const& size) {
      screenSize = size;
    }
  }
  
  math::vec2i screen_resolution() {
    return detail::screenSize * 2; // TODO: aquire this programmatically
  }
  
  math::vec2i screen_size() {
    return detail::screenSize;
  }
  
  void resize_screen(math::vec2i const& size) {
    NSSize sz = NSMakeSize(size[0], size[1]);
    [[NSView focusView] setFrameSize:sz];
    detail::resize_screen(size);
  }
}