leftwm-core 0.5.4

A window manager for Adventurers
Documentation 
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use crate::display_action::DisplayAction;
use crate::models::Handle;
use crate::models::Mode;
use crate::models::WindowHandle;
use crate::state::State;
use crate::utils;
use crate::utils::modmask_lookup::Button;
use crate::utils::modmask_lookup::ModMask;

impl<H: Handle> State<H> {
    /// `mouse_combo_handler` is called when the display server sends
    /// `DisplayEvent::MouseCombo(modmask, button, handle, x, y)`
    ///
    /// Returns `true` if changes need to be rendered.
    pub fn mouse_combo_handler(
        &mut self,
        modmask: &ModMask,
        button: Button,
        handle: WindowHandle<H>,
        x: i32,
        y: i32,
    ) -> bool {
        if let Some(window) = self.windows.iter().find(|w| w.handle == handle) {
            if !self.disable_tile_drag || window.floating() {
                let modifier = utils::modmask_lookup::into_modmask(&self.mousekey);
                let bottom_right = (window.x() + window.width(), window.y() + window.height());
                // Build the display to say whether we are ready to move/resize.
                let act = self.build_action(modmask, button, handle, modifier);
                if let Some(act) = act {
                    if self.reposition_cursor_on_resize {
                        if let DisplayAction::ReadyToResizeWindow(_) = act {
                            let move_act = DisplayAction::MoveMouseOverPoint(bottom_right);
                            self.actions.push_back(move_act);
                        }
                    }
                    self.actions.push_back(act);
                    return false;
                }
            }
        } else if self.focus_manager.behaviour.is_clickto()
            && (button == Button::Main || button == Button::Secondary)
            && self.screens.iter().any(|s| s.root == handle)
        {
            self.focus_workspace_with_point(x, y);
            return false;
        }
        true
    }

    // private helper function
    fn build_action(
        &mut self,
        mod_mask: &ModMask,
        button: Button,
        window: WindowHandle<H>,
        modifier: ModMask,
    ) -> Option<DisplayAction<H>> {
        let is_mouse_key = *mod_mask == modifier || *mod_mask == (modifier | ModMask::Shift);
        match button {
            Button::Main if is_mouse_key => {
                _ = self
                    .windows
                    .iter()
                    .find(|w| w.handle == window && w.can_move())?;
                self.mode = Mode::ReadyToMove(window);
                Some(DisplayAction::ReadyToMoveWindow(window))
            }
            Button::Secondary if is_mouse_key => {
                _ = self
                    .windows
                    .iter()
                    .find(|w| w.handle == window && w.can_resize())?;
                self.mode = Mode::ReadyToResize(window);
                Some(DisplayAction::ReadyToResizeWindow(window))
            }
            Button::Main | Button::Secondary if self.focus_manager.behaviour.is_clickto() => {
                self.focus_window(&window);
                Some(DisplayAction::ReplayClick(window, button))
            }
            _ => None,
        }
    }
}