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use crate::{consts::FONT_PATH, lisp::error::LispError, message::Message};
use sdl2::{
keyboard::{Keycode, Mod},
pixels::Color,
render::Canvas,
ttf::Sdl2TtfContext,
video::Window,
};
#[macro_export]
macro_rules! rect(
($x:expr, $y:expr, $w:expr, $h:expr) => (
::sdl2::rect::Rect::new($x as i32, $y as i32, $w as u32, $h as u32)
)
);
pub fn draw_text<S: AsRef<str>>(
canvas: &mut Canvas<Window>,
ttf_context: &Sdl2TtfContext,
text: S,
color: Color,
(x, y): (u32, u32),
) -> u32 {
let text = text.as_ref();
let texture_creator = canvas.texture_creator();
let mut font = ttf_context.load_font(FONT_PATH, 17).unwrap();
font.set_style(sdl2::ttf::FontStyle::NORMAL);
font.set_hinting(sdl2::ttf::Hinting::Mono);
let surface = font
.render(if text.is_empty() { " " } else { text.as_ref() })
.blended(color)
.unwrap();
let texture = texture_creator
.create_texture_from_surface(&surface)
.unwrap();
let (width, height) = font.size_of(&text).unwrap();
let area = rect!(x, y, width, height);
canvas.copy(&texture, None, area).unwrap();
width
}
pub fn is_copy_event(keycode: Option<Keycode>, keymod: Mod) -> bool {
keycode == Some(Keycode::C) && (keymod == Mod::LCTRLMOD || keymod == Mod::RCTRLMOD)
}
pub fn is_paste_event(keycode: Option<Keycode>, keymod: Mod) -> bool {
keycode == Some(Keycode::V) && (keymod == Mod::LCTRLMOD || keymod == Mod::RCTRLMOD)
}
pub fn handle_error(err: LispError, src: &str) -> Message {
let mut message = Message::new();
match err {
LispError::Parse(p) => message.set_error(p.display(&src)),
eval_err => message.set_error(eval_err.to_string()),
}
message
}
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