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button handling, cursor, cleanup

lines
expectocode 2018-11-25 20:08:58 +00:00
parent 077be0f5be
commit a1350283c5
1 changed files with 34 additions and 27 deletions
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61
src/main.rs
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@ -7,18 +7,12 @@ fn main() {
let window = conn.generate_id();
let width = screen.width_in_pixels();
let height = screen.height_in_pixels();
println!("width {} height {}", width, height);
let values = [
// ?RGB. First 4 bytes appear to do nothing
(xcb::CW_BACK_PIXEL, 0x00_00_00_00),
(
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::CW_OVERRIDE_REDIRECT, 1 as u32), // Don't be window managed
];
@ -52,17 +46,25 @@ fn main() {
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(
&conn,
true,
screen.root(),
(xcb::EVENT_MASK_BUTTON_RELEASE
| xcb::EVENT_MASK_BUTTON_PRESS
| xcb::EVENT_MASK_BUTTON_1_MOTION) as u16,
| xcb::EVENT_MASK_BUTTON_MOTION) as u16,
xcb::GRAB_MODE_ASYNC as u8,
xcb::GRAB_MODE_ASYNC as u8,
xcb::NONE,
xcb::NONE,
cursor,
xcb::CURRENT_TIME,
).get_reply()
.unwrap();
@ -81,36 +83,41 @@ fn main() {
match ev.response_type() {
xcb::BUTTON_PRESS => {
let button_press: &xcb::ButtonPressEvent = unsafe { xcb::cast_event(&ev) };
println!(
"Mouse press: x={}, y={}",
button_press.event_x(),
button_press.event_y()
);
if button_press.detail() == 3 {
println!("Exiting due to right click");
return;
}
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::BUTTON_RELEASE => {
let button_release: &xcb::ButtonReleaseEvent = unsafe { xcb::cast_event(&ev) };
println!(
"Mouse release: x={}, y={}",
button_release.event_x(),
button_release.event_y()
);
break; // Move on after mouse released
xcb::KEY_PRESS => {
println!("Exiting due to key press");
return;
}
xcb::MOTION_NOTIFY => {
let motion: &xcb::MotionNotifyEvent = unsafe { xcb::cast_event(&ev) };
println!(
"Mouse motion: x={}, y={}",
motion.event_x(),
motion.event_y()
);
x = motion.event_x();
y = motion.event_y();
// TODO draw rectangles (and guides)
}
xcb::BUTTON_RELEASE => {
let motion: &xcb::ButtonReleaseEvent = unsafe { xcb::cast_event(&ev) };
match motion.detail() {
5 => continue, // Scroll wheel down
4 => continue, // Scroll wheel up
_ => break, // Move on after mouse released
}
}
_ => continue,
};
}
// Now we have taken coordinates, we use them
let width = (x - start_x).abs();
let height = (y - start_y).abs();