1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41

mod button;
mod text;

pub use self::button::Button;
pub use self::text::Label;

use super::resources::Resources;

/// Data that needs to be supplied to the `update` function.
pub struct ControlState {
    /// The position of the mouse cursor. Is not required to be inside the bounds of the screen.
    pub mouse_pos: (i32, i32),
    /// If the left mouse button is pressed or not.
    pub mouse_down: bool
}

impl ControlState {
    /// Determines if the mouse is inside a rectangle. Mostly used internally.
    pub fn mouse_collision(&self, pos: (i32, i32), size: (i32, i32)) -> bool {
        self.mouse_pos.0 >= pos.0 && self.mouse_pos.1 >= pos.1
            && self.mouse_pos.0 < pos.0 + size.0 as i32
            && self.mouse_pos.1 < pos.1 + (size.1 / 3) as i32
    }
}

impl Default for ControlState {
    fn default() -> Self {
        ControlState {
            mouse_pos: (0, 0),
            mouse_down: false
        }
    }
}

pub trait Control {
    /// Update the control.
    fn update(&mut self, args: &ControlState, res: &Resources);

    /// Draw the control on the output buffer.
    fn draw(&self, buffer: &mut Vec<u32>, buffer_size: (i32, i32), res: &Resources);
}