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//! The sidebar showing all tools available to the user. This toolbar handles changing the active tool
//! based on the mouse input and (TODO!) keyboard inputs.
// TODO: Currently, the keyboard shortcuts for tools are handled by the editor, but a lot speaks for
// them being handled by the ToolSidebar instead.
use crate::input::Input;
use crate::math::Rect;
use crate::tool::ToolType;
use crate::Editor;
use raylib::core::texture::Texture2D;
use raylib::rgui::RaylibDrawGui;
use raylib::{RaylibHandle, RaylibThread};
use std::mem;
/// The file containing textures for all buttons describing the tools.
pub const BUTTON_FILE: &str = "assets/button/tool_buttons.png";
/// Sidebar that renders and handles input for the tool activation buttons.
pub struct ToolSidebar {
button_texture: Texture2D,
bindings_id: usize,
panel_rect: Rect<u16>,
}
impl ToolSidebar {
/// Create a new tool sidebar. There should be only one sidebar per program instance.
pub fn new(rl: &mut RaylibHandle, rlt: &RaylibThread, input: &mut Input) -> Self {
let button_texture = rl
.load_texture(rlt, BUTTON_FILE)
.expect("Could not read file containing tool icons.");
let panel_rect = Self::panel_rect(rl.get_screen_height() as u16);
let bindings_id = input.add_local_handler(panel_rect.clone());
Self {
button_texture,
bindings_id,
panel_rect,
}
}
fn panel_rect(screen_height: u16) -> Rect<u16> {
/* The width is currently hardcoded as 104, which is
* 64 (button-size) + 20 left gap + 20 right gap
*/
Rect::new(0, 0, 104, screen_height)
}
/// Update the state of the tool sidebar. Due to raylib limitations, this is not where the tools
/// are selected for the editor, which happens in draw.
pub fn update(&mut self, screen_height: u16, input: &mut Input) {
let new_panel_rect = Self::panel_rect(screen_height);
if new_panel_rect != self.panel_rect {
self.panel_rect = new_panel_rect;
input.set_binding_rect(self.bindings_id, self.panel_rect);
}
}
/// Draw the tool buttons and encasing panel. Because of the way raylib works, this also handles
/// clicking on tool buttons, which may be changed in the future, should a different gui be
/// chosen.
pub fn draw(&self, rld: &mut impl RaylibDrawGui, editor: &mut Editor) {
rld.gui_panel(Rect::new(
self.panel_rect.x as f32,
self.panel_rect.y as f32,
self.panel_rect.w as f32,
self.panel_rect.h as f32,
));
// TODO: Update to new input system. Create buttons that integrate.
let mut active = editor.active();
for i in 0..ToolType::NumTools as usize {
let is_current_active = active as usize == i;
if rld.gui_image_button_ex(
Rect::new(20., i as f32 * 100. + 20., 64., 64.),
None,
&self.button_texture,
Rect::new(
is_current_active as u8 as f32 * 64.,
i as f32 * 64.,
64.,
64.,
),
) {
active = unsafe { mem::transmute(i as u8) };
}
}
editor.set_active(active);
}
}
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