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|
use x11::xlib;
use x11::xlib::{
Display,
};
use safe_x11::window::XWindow;
use safe_x11::{
screen_size,
};
pub struct Desktop {
#[allow(dead_code)]
display: *mut Display,
#[allow(dead_code)]
tag: String,
window_list: Vec<XWindow>,
cw_idx: usize,
}
impl Desktop {
pub fn new(display: *mut Display, tag: &'static str) -> Desktop {
Desktop {
display: display,
tag: String::from(tag),
window_list: vec![],
cw_idx: 0,
}
}
/// Tells if the current index is valid for indexing the window list.
///
/// This is a precondition that must be valid wherever one index that
/// list.
fn valid_idx(&self) -> bool {
self.cw_idx != usize::max_value()
}
pub fn current_window(&self) -> Option<&XWindow> {
if self.cw_idx < self.window_list.len() {
self.window_list.get(self.cw_idx)
} else {
None
}
}
pub fn current_window_mut(&mut self) -> Option<&mut XWindow> {
if self.cw_idx < self.window_list.len() {
self.window_list.get_mut(self.cw_idx)
} else {
None
}
}
/// Add a window to the current desktop
pub fn add_window(&mut self, w: xlib::Window) {
if self.find_window(w).is_some() {
return;
}
self.unfocus_current_window();
if let Some(w) = XWindow::new(self.display, w) {
w.select_input(xlib::EnterWindowMask);
self.window_list.push(w);
// Last windows get focus.
self.focus_current_window();
}
}
/// Remove a window.
pub fn remove_window(&mut self, w: xlib::Window) {
let pos = self.window_list.iter().position(|xw| xw.inner == w);
match pos {
Some(idx) => {
let new_idx = if idx == 0 {
if self.window_list.len() == 1 { usize::max_value() } else { 0 }
} else {
idx - 1
};
self.window_list.remove(idx);
self.cw_idx = new_idx;
self.focus_current_window();
},
None => (),
}
}
/// Changes the focus from the current window to the window on the idx
/// postition on the window_list.
pub fn change_focus_of(&mut self, idx: usize) {
let w = &self.window_list[idx];
self.unfocus_current_window();
self.cw_idx = idx;
w.set_border_width(1);
w.set_border_color("red");
w.raise();
}
/// Find a given window and returns it's position on the window_list.
pub fn find_window(&self, w: xlib::Window) -> Option<usize> {
self.window_list.iter().position(|xw| xw.inner == w)
}
/// Focus the next window.
///
/// There're 3 posibilities. There's no window, there's one window or there
/// are more windows.
pub fn focus_next(&mut self) {
if self.valid_idx() {
// Unfocus the current window.
let prev_win = &self.window_list[self.cw_idx];
prev_win.unfocus();
// And give focus to the next one.
let next_win_idx = if self.cw_idx < self.window_list.len() - 1 {
self.cw_idx + 1
} else {
0
};
let curr_win = &self.window_list[next_win_idx];
curr_win.focus();
self.cw_idx = next_win_idx;
}
}
fn focus_current_window(&self) {
self.current_window().map(|x| x.focus());
}
fn unfocus_current_window(&self) {
self.current_window().map(|x| x.unfocus());
}
/// Get a list of the geometries for every window in the screen (including
/// the screen borders. The form is (x, y).
///
/// # Example
///
/// Having a screen of 800x600, and a window on 10(x), 10(y) with dimensions
/// 400(width) and 300(height):
///
/// ```
/// for (x, y) in dotwm.geometries() {
/// println!("x: {} - y: {}", x, y);
/// }
/// ```
///
/// The output will be:
///
/// ```
/// (0,0)
/// (800, 600)
/// (10, 10)
/// (410, 310)
/// ```
pub fn geometries(&self) -> Vec<(i32,i32)> {
let (screen_width, screen_height) = screen_size(self.display);
let mut result: Vec<(i32,i32)> = vec![
(0, 0),
(screen_width as i32, screen_height as i32),
];
for w in self.window_list.iter() {
let attrs = w.attributes();
result.push((attrs.x, attrs.y));
result.push((attrs.x + attrs.width, attrs.y + attrs.height));
}
result
}
pub fn x_geometries(&self) -> Vec<i32> {
self.geometries().iter().map(|x| x.0).collect()
}
pub fn y_geometries(&self) -> Vec<i32> {
self.geometries().iter().map(|x| x.1).collect()
}
pub fn show_windows(&self) {
for win in &self.window_list {
win.map();
}
}
pub fn hide_windows(&self) {
for win in &self.window_list {
win.unmap();
}
}
}
|
