Center window on screen
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parent
e37563eb7a
commit
39a888c7ba
2 changed files with 55 additions and 31 deletions
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@ -3,14 +3,15 @@ log_level = "trace"
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[completions]
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"e" = "emacs"
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"f" = "firefox"
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"t" = "terminal"
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"t" = "xfce4-terminal"
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"j" = "jetbrains"
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[sources.primary]
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matcher = "Flex"
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matcher = "Prefix"
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source = "Windows"
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[sources.additional]
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matcher = "Flex"
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matcher = "Fuse"
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source = ["Apps", "Shell", "Test"]
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[theme]
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@ -22,6 +22,7 @@ use winit::window::{Window, WindowBuilder};
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use xcb::ffi::xcb_connection_t;
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use xcb::x::{GrabMode, PropMode};
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use xcb::XidNew;
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use xcb_wm::ewmh;
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pub fn build_window() -> Result<(Window, EventLoop<()>)> {
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trace! {"Initialize `winit` event loop"}
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@ -32,7 +33,6 @@ pub fn build_window() -> Result<(Window, EventLoop<()>)> {
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.with_decorations(false)
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.with_transparent(true)
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.with_title("roftl")
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.with_visible(true)
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.with_always_on_top(true)
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.with_override_redirect(true)
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.build(&event_loop)?;
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@ -49,11 +49,7 @@ fn postprocess_window(window: &Window) -> Result<()> {
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trace! {"Post-process window for x11"}
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trace! {"Get low level connection and data"}
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let screen_id = window
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.xlib_screen_id()
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.ok_or(anyhow! {"Could not get X11 screen id for the window"})?;
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let xcb_window: xcb::x::Window = unsafe {
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let xcb_window = unsafe {
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xcb::x::Window::new(
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window
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.xlib_window()
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@ -61,36 +57,67 @@ fn postprocess_window(window: &Window) -> Result<()> {
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)
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};
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let xcb_conn_raw = window
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.xcb_connection()
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.ok_or(anyhow! {"Cannot get raw xcb connection"})?;
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let xcb_conn = unsafe {
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mem::ManuallyDrop::new(xcb::Connection::from_raw_conn(mem::transmute(xcb_conn_raw)))
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let xcb_con = unsafe {
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let con_raw = window
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.xcb_connection()
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.ok_or(anyhow! {"Cannot get raw xcb connection"})?;
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let con = xcb::Connection::from_raw_conn(con_raw as *mut xcb_connection_t);
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// xcb::Connection closes the underlying x connection on drop
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// since the connection is actually owned by the window we have
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// to prevent the drop
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mem::ManuallyDrop::new(con)
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};
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let ewmh_con = xcb_wm::ewmh::Connection::connect(&xcb_con);
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let icccm_con = xcb_wm::icccm::Connection::connect(&xcb_con);
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trace! {"Unmap window"}
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let req = xcb::x::UnmapWindow { window: xcb_window };
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let cookie = xcb_conn.send_request_checked(&req);
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xcb_conn.check_request(cookie)?;
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xcb_con.send_and_check_request(&req)?;
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trace! {"Hide window from taskbar"}
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let xcb_conn = unsafe { xcb::Connection::from_raw_conn(mem::transmute(xcb_conn_raw)) };
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let ewmh_conn = xcb_wm::ewmh::Connection::connect(&xcb_conn);
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let window_state = xcb_wm::ewmh::proto::SendWmState::new(
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&ewmh_conn,
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&ewmh_con,
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xcb_window,
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PropMode::Append,
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[
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ewmh_conn.atoms._NET_WM_STATE,
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ewmh_conn.atoms._NET_WM_STATE_SKIP_TASKBAR,
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ewmh_con.atoms._NET_WM_STATE,
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ewmh_con.atoms._NET_WM_STATE_SKIP_TASKBAR,
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],
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1,
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);
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ewmh_conn.send_request(&window_state);
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ewmh_con.send_request(&window_state);
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let req = xcb::x::MapWindow { window: xcb_window };
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xcb_conn.send_request(&req);
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trace! {"Center window on screen"}
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let screen_pixel = window
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.current_monitor()
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.ok_or(anyhow! {"Cannot get screen size"})?
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.size();
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// usually 0,0 except in multi-head settings (or large display (see icccm spec) which we actually don't consider)
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let screen_position = window
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.current_monitor()
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.ok_or(anyhow! {"Cannot get screen position"})?
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.position();
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// Configure the window to the center with a size of 800x600 pixels.
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let window_width = 800u32;
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let window_height = 300u32;
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let x = screen_position.x as i32 + (screen_pixel.width as i32 / 2 - window_width as i32 / 2);
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let y = screen_position.y as i32 + (screen_pixel.height as i32 / 2 - window_height as i32 / 2);
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xcb_con.send_and_check_request(&xcb::x::ConfigureWindow {
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window: xcb_window,
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value_list: &[
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xcb::x::ConfigWindow::X(x),
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xcb::x::ConfigWindow::Y(y),
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xcb::x::ConfigWindow::Width(window_width),
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xcb::x::ConfigWindow::Height(window_height),
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],
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})?;
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trace! {"Map window"}
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xcb_con.send_and_check_request(&xcb::x::MapWindow { window: xcb_window })?;
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trace! {"Grab keyboard"}
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let req = xcb::x::GrabKeyboard {
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@ -100,11 +127,7 @@ fn postprocess_window(window: &Window) -> Result<()> {
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pointer_mode: GrabMode::Async,
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keyboard_mode: GrabMode::Async,
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};
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xcb_conn.send_request(&req);
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mem::forget(xcb_conn);
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// trace! {"Center window on screen"}
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xcb_con.send_request(&req);
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Ok(())
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}
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