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hacksaw
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rects

This commit is contained in:
expectocode 2018-11-26 12:35:04 +00:00
parent 24e977748e
commit c4650e8158
1 changed files with 47 additions and 51 deletions
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94
src/main.rs
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@ -1,6 +1,23 @@
extern crate xcb;
use std::cmp::{max, min};
use xcb::shape;
const LINE_WIDTH: u16 = 3;
fn set_shape(conn: &xcb::Connection, window: xcb::Window, rects: &[xcb::Rectangle]) {
shape::rectangles(
&conn,
shape::SO_SET as u8,
shape::SK_BOUNDING as u8,
0,
window,
0,
0,
&rects,
);
conn.flush();
}
fn main() {
let (conn, screen_num) = xcb::Connection::connect(None).unwrap();
let setup = conn.get_setup();
@ -26,16 +43,14 @@ fn main() {
screen.root(),
0, // x
0, // y
0, // width
0, // height
screen.width_in_pixels(), // width
screen.height_in_pixels(), // height
0,
xcb::WINDOW_CLASS_INPUT_OUTPUT as u16,
screen.root_visual(),
&values,
);
xcb::map_window(&conn, window);
let title = "hacksaw";
// setting title
xcb::change_property(
@ -71,47 +86,10 @@ fn main() {
).get_reply()
.unwrap();
conn.flush();
set_shape(&conn, window, &[xcb::Rectangle::new(0, 0, 0, 0)]);
let temp_win = conn.generate_id();
xcb::create_window(
&conn,
xcb::COPY_FROM_PARENT as u8,
temp_win,
screen.root(),
0, // x
0, // y
200, // width
499, // height
0,
xcb::WINDOW_CLASS_INPUT_OUTPUT as u16,
screen.root_visual(),
&[(xcb::CW_BACK_PIXEL, screen.black_pixel())],
);
let rects = [xcb::Rectangle::new(300, 300, 400, 300)];
shape::rectangles(
&conn,
shape::SO_SET as u8,
shape::SK_BOUNDING as u8,
0,
temp_win,
0,
0,
&rects,
);
shape::combine(
&conn,
shape::SO_SET as u8,
shape::SK_BOUNDING as u8,
shape::SK_BOUNDING as u8,
window,
0,
0,
temp_win,
);
xcb::map_window(&conn, window);
conn.flush();
// TODO formalise the fact that motion comes after press?
@ -121,6 +99,9 @@ fn main() {
let mut x = 0;
let mut y = 0;
let mut width = 0;
let mut height = 0;
loop {
let ev = conn.wait_for_event().unwrap();
match ev.response_type() {
@ -147,7 +128,23 @@ fn main() {
let motion: &xcb::MotionNotifyEvent = unsafe { xcb::cast_event(&ev) };
x = motion.event_x();
y = motion.event_y();
// TODO draw rectangles (and guides)
// TODO investigate efficiency of let mut outside loop vs let inside
let top_x = min(x, start_x);
let top_y = min(y, start_y);
let bot_x = max(x, start_x);
let bot_y = max(y, start_y);
width = (x - start_x).abs() as u16;
height = (y - start_y).abs() as u16;
let rects = [
xcb::Rectangle::new(top_x, top_y, LINE_WIDTH, height),
xcb::Rectangle::new(top_x, top_y, width, LINE_WIDTH),
xcb::Rectangle::new(bot_x, top_y, LINE_WIDTH, height),
xcb::Rectangle::new(top_x, bot_y, width, LINE_WIDTH),
];
set_shape(&conn, window, &rects);
}
xcb::BUTTON_RELEASE => {
let motion: &xcb::ButtonReleaseEvent = unsafe { xcb::cast_event(&ev) };
@ -157,15 +154,14 @@ fn main() {
_ => break, // Move on after mouse released
}
}
xcb::EXPOSE => {
println!("expose!");
}
_ => continue,
};
}
// set_shape(&conn, window, &[xcb::Rectangle::new(0, 0, 0, 0)]);
// xcb::unmap_window(&conn, window);
// TODO aaaah black flashes
// Now we have taken coordinates, we use them
let width = (x - start_x).abs();
let height = (y - start_y).abs();
println!("{}x{}+{}+{}", width, height, start_x, start_y);
}