Add ttf rendering test code

Cargo.lock

@@ -2,6 +2,62 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.146"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f92be4933c13fd498862a9e02a3055f8a8d9c039ce33db97306fd5a6caa7f29b"
+
+[[package]]
+name = "sdl2"
+version = "0.35.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7959277b623f1fb9e04aea73686c3ca52f01b2145f8ea16f4ff30d8b7623b1a"
+dependencies = [
+ "bitflags",
+ "lazy_static",
+ "libc",
+ "sdl2-sys",
+]
+
+[[package]]
+name = "sdl2-sys"
+version = "0.35.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3586be2cf6c0a8099a79a12b4084357aa9b3e0b0d7980e3b67aaf7a9d55f9f0"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "version-compare",
+]
+
 [[package]]
 name = "touchstone-ui"
 version = "0.1.0"
+dependencies = [
+ "sdl2",
+]
+
+[[package]]
+name = "version-compare"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "579a42fc0b8e0c63b76519a339be31bed574929511fa53c1a3acae26eb258f29"

Cargo.toml

@@ -5,4 +5,7 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
-[dependencies]
+[dependencies.sdl2]
+sdl2 = "0.35.2"
+default-features = false
+features = ["ttf"]

src/main.rs

@@ -1,3 +1,74 @@
-fn main() {
-    println!("Hello, world!");
+extern crate sdl2; 
+
+use sdl2::pixels::Color;
+use sdl2::rect::Rect;
+use sdl2::event::Event;
+use sdl2::keyboard::Keycode;
+
+use std::time::Duration;
+use std::path::Path;
+
+use sdl2::ttf::*;
+
+static SCREEN_WIDTH: u32 = 480;
+static SCREEN_HEIGHT: u32 = 320;
+
+macro_rules! rect(
+    ($x:expr, $y:expr, $w:expr, $h:expr) => (
+        Rect::new($x as i32, $y as i32, $w as u32, $h as u32)
+    )
+);
+
+pub fn main() {
+    let sdl_context = sdl2::init().unwrap();
+    let video_subsystem = sdl_context.video().unwrap();
+ 
+    let window = video_subsystem.window("rust-sdl2 demo", 480, 320)
+        .position_centered()
+        .build()
+        .unwrap();
+ 
+    let mut canvas = window.into_canvas().build().unwrap();
+    let texture_creator = canvas.texture_creator();
+
+    // Font stuff
+    let ttf_context = sdl2::ttf::init().map_err(|e| e.to_string()).unwrap();
+    let font_path = Path::new("assets/handel_gothic_regular.ttf");
+    let mut font = ttf_context.load_font(font_path, 128).unwrap();
+
+    let surface = font
+        .render("LIFE SUPPORT")
+        .blended(Color::RGBA(200, 200, 200, 255))
+        .map_err(|e| e.to_string()).unwrap();
+
+    let texture = texture_creator
+        .create_texture_from_surface(&surface)
+        .map_err(|e| e.to_string()).unwrap();
+
+    let target = rect!(110, 20, 260, 24);
+ 
+    canvas.set_draw_color(Color::RGB(0, 255, 255));
+    canvas.clear();
+    canvas.present();
+    let mut event_pump = sdl_context.event_pump().unwrap();
+    let mut i = 0;
+    'running: loop {
+        i = (i + 1) % 255;
+        canvas.set_draw_color(Color::RGB(48, 39, 49));
+        canvas.clear();
+        canvas.copy(&texture, None, Some(target)).unwrap();
+        for event in event_pump.poll_iter() {
+            match event {
+                Event::Quit {..} |
+                Event::KeyDown { keycode: Some(Keycode::Escape), .. } => {
+                    break 'running
+                },
+                _ => {}
+            }
+        }
+        // The rest of the game loop goes here...
+
+        canvas.present();
+        ::std::thread::sleep(Duration::new(0, 1_000_000_000u32 / 60));
+    }
 }