use crate::Grid;
pub struct View<'a> {
grid: &'a Grid,
x_pos: usize,
y_pos: usize,
width: usize,
height: usize,
}
impl<'a> View<'a> {
pub fn new(grid: &'a Grid) -> View<'a> {
View::new_positioned(grid, 0, 0, grid.get_width(), grid.get_height())
}
pub fn new_positioned(
grid: &'a Grid,
x_pos: usize,
y_pos: usize,
width: usize,
height: usize,
) -> View {
View {
grid,
x_pos,
y_pos,
width,
height,
}
}
pub fn position(&self) -> (usize, usize) {
(self.x_pos, self.y_pos)
}
pub fn set_position(&mut self, x: usize, y: usize) {
self.x_pos = x;
self.y_pos = y;
}
pub fn width(&self) -> usize {
self.width
}
pub fn set_width(&mut self, w: usize) {
self.width = w;
}
pub fn height(&self) -> usize {
self.height
}
pub fn set_height(&mut self, h: usize) {
self.height = h;
}
pub fn render(&self, img_width: usize, img_height: usize) -> Vec<u8> {
let view_width = if self.x_pos + self.width > self.grid.get_width() {
let offset = self.x_pos + self.width - self.grid.get_width();
self.width - offset
} else {
self.width
};
let view_height = if self.y_pos + self.height > self.grid.get_height() {
let offset = self.y_pos + self.height - self.grid.get_height();
self.height - offset
} else {
self.height
};
self.grid.render(
self.x_pos,
self.y_pos,
view_width,
view_height,
img_width,
img_height,
)
}
}
impl Grid {
}