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use super::inputfield::InputField;
use super::messagebox::messagebox;
use crate::event::{InputEvent, WaitEvent};
use crate::rendering::{CanvasRenderer, MovePositionRenderer};
use crate::{TileProvider, FONT_HEIGHT, FONT_WIDTH};
use anyhow::{Error, Result};
use sdl2::{
rect::{Point, Rect},
render::WindowCanvas,
surface::Surface,
EventPump,
};
#[derive(Debug, Clone)]
pub enum Answer {
Ok(String),
Quit,
}
pub fn show(
canvas: &mut WindowCanvas,
tileprovider: &dyn TileProvider,
msg: &str,
max_length: usize,
event_pump: &mut EventPump,
) -> Result<Answer> {
let placeholder_msg = format!(
"{}\n{}\n\nOk (Enter) Abort (Esc)\n",
msg,
" ".repeat(max_length)
);
let texture_creator = canvas.texture_creator();
let messagebox =
messagebox(&placeholder_msg, tileprovider, &texture_creator)?;
let surface =
canvas.window().surface(event_pump).map_err(Error::msg)?;
let (scale_x, scale_y) = canvas.scale();
let destrect = Rect::from_center(
Point::new(
(surface.width() as f32 / 2f32 / scale_x) as i32,
(surface.height() as f32 / 2f32 / scale_y) as i32,
),
messagebox.width(),
messagebox.height(),
);
let mut background_backup = Surface::new(
destrect.width(),
destrect.height(),
surface.pixel_format_enum(),
)
.map_err(Error::msg)?;
surface
.blit(destrect, &mut background_backup, None)
.map_err(Error::msg)?;
canvas
.copy(&messagebox.as_texture(&texture_creator)?, None, destrect)
.map_err(Error::msg)?;
let offset_x = destrect.left() + FONT_WIDTH as i32;
let offset_y = destrect.bottom() - FONT_HEIGHT as i32 * 4;
let mut input_field = InputField::new(max_length);
{
let mut input_field_renderer = CanvasRenderer {
canvas,
texture_creator: &texture_creator,
tileprovider,
};
let mut input_field_renderer = MovePositionRenderer {
offset_x,
offset_y,
upstream: &mut input_field_renderer,
};
input_field.render(&mut input_field_renderer)?;
}
canvas.present();
loop {
match InputEvent::wait(event_pump)? {
InputEvent::DeleteLeft => {
input_field.backspace_pressed();
}
InputEvent::DeleteRight => {
input_field.delete_pressed();
}
InputEvent::MoveCursorLeft => {
input_field.left_pressed();
}
InputEvent::MoveCursorRight => {
input_field.right_pressed();
}
InputEvent::Confirm => {
canvas
.copy(
&background_backup.as_texture(&texture_creator)?,
None,
destrect,
)
.map_err(Error::msg)?;
canvas.present();
let text = input_field.get_text();
return Ok(Answer::Ok(text.to_string()));
}
InputEvent::Abort => {
canvas
.copy(
&background_backup.as_texture(&texture_creator)?,
None,
destrect,
)
.map_err(Error::msg)?;
canvas.present();
return Ok(Answer::Quit);
}
InputEvent::Letter(c) => {
input_field.symbol_pressed(c);
}
InputEvent::RefreshScreen => {}
}
{
let mut input_field_renderer = CanvasRenderer {
canvas,
texture_creator: &texture_creator,
tileprovider,
};
let mut input_field_renderer = MovePositionRenderer {
offset_x,
offset_y,
upstream: &mut input_field_renderer,
};
input_field.render(&mut input_field_renderer)?;
}
canvas.present();
}
}
