feat: initial commit

This commit is contained in:
Nathan
2025-06-03 15:48:59 -06:00
commit eb59c1b50a
8 changed files with 1998 additions and 0 deletions

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10
gtk_grid/Cargo.toml Normal file
View File

@@ -0,0 +1,10 @@
[package]
name = "gtk_grid"
version = "0.1.0"
edition = "2021"
[dependencies]
gdk4 = "0.9.6"
gtk4 = "0.9.6"
rand = "0.9.1"

109
gtk_grid/src/main.rs Normal file
View File

@@ -0,0 +1,109 @@
use gdk4::{Cursor, Display};
use gtk4::prelude::*;
use gtk4::{Application, ApplicationWindow, DrawingArea, EventControllerMotion};
use rand::Rng;
use std::cell::RefCell;
use std::rc::Rc;
const GRID_SIZE: usize = 10;
const SQUARE_SIZE: f64 = 30.0;
const BORDER_WIDTH: f64 = 1.0;
fn main() {
let app = gtk4::Application::builder()
.application_id("com.example.GridHover")
.build();
app.connect_activate(build_ui);
app.run();
}
fn build_ui(app: &gtk4::Application) {
let colors = Rc::new(generate_colors());
let hover_cell = Rc::new(RefCell::new(None::<(usize, usize)>));
let drawing_area = DrawingArea::new();
let canvas_size = (GRID_SIZE as f64 * (SQUARE_SIZE + BORDER_WIDTH)) as i32;
drawing_area.set_content_width(canvas_size);
drawing_area.set_content_height(canvas_size);
drawing_area.set_focusable(true);
drawing_area.set_draw_func({
let colors = colors.clone();
let hover_cell = hover_cell.clone();
move |_, cr, _, _| {
for row in 0..GRID_SIZE {
for col in 0..GRID_SIZE {
let x = col as f64 * (SQUARE_SIZE + BORDER_WIDTH);
let y = row as f64 * (SQUARE_SIZE + BORDER_WIDTH);
// Draw white border
cr.set_source_rgb(1.0, 1.0, 1.0);
cr.rectangle(x, y, SQUARE_SIZE + BORDER_WIDTH, SQUARE_SIZE + BORDER_WIDTH);
cr.fill().unwrap();
// Highlighted?
if Some((col, row)) == *hover_cell.borrow() {
cr.set_source_rgb(0.5, 0.5, 0.5); // gray
} else {
let (r, g, b) = colors[row][col];
cr.set_source_rgb(r, g, b);
}
cr.rectangle(
x + BORDER_WIDTH / 2.0,
y + BORDER_WIDTH / 2.0,
SQUARE_SIZE,
SQUARE_SIZE,
);
cr.fill().unwrap();
}
}
}
});
let display = Display::default().unwrap();
let cursor = Cursor::from_name("pointer", None);
if let Some(cursor) = cursor {
drawing_area.set_cursor(Some(&cursor));
}
drawing_area.add_controller({
let hover_cell = hover_cell.clone();
let drawing_area = drawing_area.clone();
let motion_controller = gtk4::EventControllerMotion::new();
motion_controller.connect_motion(move |_, x, y| {
let col = (x / (SQUARE_SIZE + BORDER_WIDTH)).floor() as usize;
let row = (y / (SQUARE_SIZE + BORDER_WIDTH)).floor() as usize;
if col < GRID_SIZE && row < GRID_SIZE {
*hover_cell.borrow_mut() = Some((col, row));
} else {
*hover_cell.borrow_mut() = None;
}
drawing_area.queue_draw();
});
motion_controller
});
let window = ApplicationWindow::builder()
.application(app)
.title("Hover Highlight Grid")
.child(&drawing_area)
.build();
window.present();
}
fn generate_colors() -> Vec<Vec<(f64, f64, f64)>> {
let mut rng = rand::rng();
(0..GRID_SIZE)
.map(|_| {
(0..GRID_SIZE)
.map(|_| (rng.random(), rng.random(), rng.random()))
.collect()
})
.collect()
}