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compare: tan:179c8ac9eeb478f76fae8775e230d19fb113ff18
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1 changed files with 25 additions and 53 deletions
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78
src/main.rs
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@ -7,12 +7,20 @@ fn main() {
let window = conn.generate_id(); let window = conn.generate_id();
let width = screen.width_in_pixels();
let height = screen.height_in_pixels();
println!("width {} height {}", width, height);
let values = [ let values = [
// ?RGB. First 4 bytes appear to do nothing // ?RGB. First 4 bytes appear to do nothing
(xcb::CW_BACK_PIXEL, 0x00_00_00_00), (xcb::CW_BACK_PIXEL, 0x00_00_00_00),
( (
xcb::CW_EVENT_MASK, xcb::CW_EVENT_MASK,
xcb::EVENT_MASK_EXPOSURE | xcb::EVENT_MASK_KEY_PRESS, // we'll need this later xcb::EVENT_MASK_EXPOSURE
| xcb::EVENT_MASK_KEY_PRESS // we'll need this later
// | xcb::EVENT_MASK_BUTTON_PRESS
// | xcb::EVENT_MASK_BUTTON_RELEASE,
), ),
(xcb::CW_OVERRIDE_REDIRECT, 1 as u32), // Don't be window managed (xcb::CW_OVERRIDE_REDIRECT, 1 as u32), // Don't be window managed
]; ];
@ -46,80 +54,44 @@ fn main() {
title.as_bytes(), title.as_bytes(),
); );
let font = conn.generate_id();
xcb::open_font(&conn, font, "cursor");
// TODO: create cursor with a Pixmap
// https://stackoverflow.com/questions/40578969/how-to-create-a-cursor-in-x11-from-raw-data-c
let cursor = conn.generate_id();
xcb::create_glyph_cursor(&conn, cursor, font, font, 0, 30, 0, 0, 0, 0, 0, 0);
xcb::grab_pointer( xcb::grab_pointer(
&conn, &conn,
true, true,
screen.root(), screen.root(),
(xcb::EVENT_MASK_BUTTON_RELEASE (xcb::EVENT_MASK_BUTTON_RELEASE | xcb::EVENT_MASK_BUTTON_PRESS) as u16,
| xcb::EVENT_MASK_BUTTON_PRESS
| xcb::EVENT_MASK_BUTTON_MOTION) as u16,
xcb::GRAB_MODE_ASYNC as u8, xcb::GRAB_MODE_ASYNC as u8,
xcb::GRAB_MODE_ASYNC as u8, xcb::GRAB_MODE_ASYNC as u8,
xcb::NONE, xcb::NONE,
cursor, xcb::NONE,
xcb::CURRENT_TIME, xcb::CURRENT_TIME,
).get_reply() ).get_reply()
.unwrap(); .unwrap();
conn.flush(); conn.flush();
// TODO formalise the fact that motion comes after press?
let mut start_x = 0;
let mut start_y = 0;
let mut x = 0;
let mut y = 0;
loop { loop {
let ev = conn.wait_for_event().unwrap(); let ev = conn.wait_for_event().unwrap();
match ev.response_type() { match ev.response_type() {
xcb::BUTTON_PRESS => { xcb::BUTTON_PRESS => {
let button_press: &xcb::ButtonPressEvent = unsafe { xcb::cast_event(&ev) }; let button_press: &xcb::ButtonPressEvent = unsafe { xcb::cast_event(&ev) };
println!(
if button_press.detail() == 3 { "Mouse press: x={}, y={}",
println!("Exiting due to right click"); button_press.event_x(),
return; button_press.event_y()
} );
start_x = button_press.event_x();
start_y = button_press.event_y();
// For the case where there is no motion
x = start_x;
y = start_y;
}
xcb::KEY_PRESS => {
println!("Exiting due to key press");
return;
}
xcb::MOTION_NOTIFY => {
let motion: &xcb::MotionNotifyEvent = unsafe { xcb::cast_event(&ev) };
x = motion.event_x();
y = motion.event_y();
// TODO draw rectangles (and guides)
} }
xcb::BUTTON_RELEASE => { xcb::BUTTON_RELEASE => {
let motion: &xcb::ButtonReleaseEvent = unsafe { xcb::cast_event(&ev) }; let button_release: &xcb::ButtonReleaseEvent = unsafe { xcb::cast_event(&ev) };
match motion.detail() { println!(
5 => continue, // Scroll wheel down "Mouse release: x={}, y={}",
4 => continue, // Scroll wheel up button_release.event_x(),
_ => break, // Move on after mouse released button_release.event_y()
);
break; // Move on after mouse released
} }
} _ => continue
_ => continue,
}; };
} }
// Now we have taken coordinates, we use them // Now we have taken coordinates, we use them
let width = (x - start_x).abs(); // TODO
let height = (y - start_y).abs();
println!("{}x{}+{}+{}", width, height, start_x, start_y);
} }