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wry/src/tree/container.rs
2022-04-02 00:31:30 +02:00

1237 lines
42 KiB
Rust

use crate::backend::{KeyState};
use crate::cursor::KnownCursor;
use crate::fixed::Fixed;
use crate::ifs::wl_seat::{NodeSeatState, SeatId, WlSeatGlobal, BTN_LEFT};
use crate::rect::Rect;
use crate::render::{Renderer, Texture};
use crate::theme::Color;
use crate::tree::walker::NodeVisitor;
use crate::tree::{FindTreeResult, FoundNode, Node, NodeId, WorkspaceNode};
use crate::utils::clonecell::CloneCell;
use crate::utils::linkedlist::{LinkedList, LinkedNode, NodeRef};
use ahash::AHashMap;
use jay_config::{Axis, Direction};
use std::cell::{Cell, RefCell};
use crate::state::State;
use crate::text;
use crate::utils::errorfmt::ErrorFmt;
use crate::utils::numcell::NumCell;
use crate::utils::rc_eq::rc_eq;
use std::fmt::{Debug, Formatter};
use std::mem;
use std::ops::{Deref, DerefMut, Sub};
use std::rc::Rc;
#[allow(dead_code)]
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum ContainerSplit {
Horizontal,
Vertical,
}
impl From<Axis> for ContainerSplit {
fn from(a: Axis) -> Self {
match a {
Axis::Horizontal => Self::Horizontal,
Axis::Vertical => Self::Vertical,
}
}
}
impl Into<Axis> for ContainerSplit {
fn into(self) -> Axis {
match self {
ContainerSplit::Horizontal => Axis::Horizontal,
ContainerSplit::Vertical => Axis::Vertical,
}
}
}
#[allow(dead_code)]
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum ContainerFocus {
None,
Child,
Yes,
}
tree_id!(ContainerNodeId);
pub struct ContainerTitle {
pub x: i32,
pub y: i32,
pub tex: Rc<Texture>,
}
#[derive(Default)]
pub struct ContainerRenderData {
pub title_rects: Vec<Rect>,
pub active_title_rects: Vec<Rect>,
pub border_rects: Vec<Rect>,
pub underline_rects: Vec<Rect>,
pub titles: Vec<ContainerTitle>,
}
pub struct ContainerNode {
pub id: ContainerNodeId,
pub parent: CloneCell<Rc<dyn Node>>,
active: Cell<bool>,
pub split: Cell<ContainerSplit>,
title: RefCell<String>,
pub mono_child: CloneCell<Option<NodeRef<ContainerChild>>>,
pub mono_body: Cell<Rect>,
pub mono_content: Cell<Rect>,
pub abs_x1: Cell<i32>,
pub abs_y1: Cell<i32>,
pub width: Cell<i32>,
pub height: Cell<i32>,
pub content_width: Cell<i32>,
pub content_height: Cell<i32>,
pub sum_factors: Cell<f64>,
layout_scheduled: Cell<bool>,
compute_render_data_scheduled: Cell<bool>,
num_children: NumCell<usize>,
pub children: LinkedList<ContainerChild>,
child_nodes: RefCell<AHashMap<NodeId, LinkedNode<ContainerChild>>>,
seat_state: NodeSeatState,
workspace: CloneCell<Rc<WorkspaceNode>>,
seats: RefCell<AHashMap<SeatId, SeatState>>,
state: Rc<State>,
pub render_data: RefCell<ContainerRenderData>,
}
impl Debug for ContainerNode {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
f.debug_struct("ContainerNode").finish_non_exhaustive()
}
}
#[derive(Clone)]
pub struct ContainerChild {
pub node: Rc<dyn Node>,
pub active: Cell<bool>,
pub body: Cell<Rect>,
pub content: Cell<Rect>,
factor: Cell<f64>,
title: RefCell<String>,
}
struct SeatState {
cursor: KnownCursor,
target: bool,
x: i32,
y: i32,
op: Option<SeatOp>,
}
impl ContainerChild {
fn position_content(&self) {
let mut content = self.content.get();
let body = self.body.get();
let width = content.width();
let height = content.height();
// let x1 = body.x1() + (body.width() - width) / 2;
// let y1 = body.y1() + (body.height() - height) / 2;
let x1 = body.x1();
let y1 = body.y1();
content = Rect::new_sized(x1, y1, width, height).unwrap();
// log::debug!("body: {:?}", body);
// log::debug!("content: {:?}", content);
self.content.set(content);
}
}
impl ContainerNode {
pub fn new(
state: &Rc<State>,
workspace: &Rc<WorkspaceNode>,
parent: Rc<dyn Node>,
child: Rc<dyn Node>,
split: ContainerSplit,
) -> Rc<Self> {
child.clone().set_workspace(workspace);
let children = LinkedList::new();
let mut child_nodes = AHashMap::new();
child_nodes.insert(
child.id(),
children.add_last(ContainerChild {
node: child.clone(),
active: Cell::new(false),
body: Cell::new(Default::default()),
content: Cell::new(Default::default()),
factor: Cell::new(1.0),
title: Default::default(),
}),
);
let slf = Rc::new(Self {
id: state.node_ids.next(),
parent: CloneCell::new(parent),
active: Cell::new(false),
split: Cell::new(split),
title: Default::default(),
mono_child: CloneCell::new(None),
mono_body: Cell::new(Default::default()),
mono_content: Cell::new(Default::default()),
abs_x1: Cell::new(0),
abs_y1: Cell::new(0),
width: Cell::new(0),
height: Cell::new(0),
content_width: Cell::new(0),
content_height: Cell::new(0),
sum_factors: Cell::new(1.0),
layout_scheduled: Cell::new(false),
compute_render_data_scheduled: Cell::new(false),
num_children: NumCell::new(1),
children,
child_nodes: RefCell::new(child_nodes),
seat_state: Default::default(),
workspace: CloneCell::new(workspace.clone()),
seats: RefCell::new(Default::default()),
state: state.clone(),
render_data: Default::default(),
});
child.set_parent(slf.clone());
slf
}
pub fn prepend_child(self: &Rc<Self>, new: Rc<dyn Node>) {
if let Some(child) = self.children.first() {
self.add_child_before_(&child, new);
}
}
pub fn append_child(self: &Rc<Self>, new: Rc<dyn Node>) {
if let Some(child) = self.children.last() {
self.add_child_after_(&child, new);
}
}
pub fn add_child_after(self: &Rc<Self>, prev: &dyn Node, new: Rc<dyn Node>) {
self.add_child_x(prev, new, |prev, new| self.add_child_after_(prev, new));
}
pub fn add_child_before(self: &Rc<Self>, prev: &dyn Node, new: Rc<dyn Node>) {
self.add_child_x(prev, new, |prev, new| self.add_child_before_(prev, new));
}
fn add_child_x<F>(self: &Rc<Self>, prev: &dyn Node, new: Rc<dyn Node>, f: F)
where
F: FnOnce(&NodeRef<ContainerChild>, Rc<dyn Node>),
{
let node = self
.child_nodes
.borrow()
.get(&prev.id())
.map(|n| n.to_ref());
if let Some(node) = node {
f(&node, new);
return;
}
log::error!(
"Tried to add a child to a container but the preceding node is not in the container"
);
}
fn add_child_after_(self: &Rc<Self>, prev: &NodeRef<ContainerChild>, new: Rc<dyn Node>) {
self.add_child(|cc| prev.append(cc), new);
}
fn add_child_before_(self: &Rc<Self>, prev: &NodeRef<ContainerChild>, new: Rc<dyn Node>) {
self.add_child(|cc| prev.prepend(cc), new);
}
fn add_child<F>(self: &Rc<Self>, f: F, new: Rc<dyn Node>)
where
F: FnOnce(ContainerChild) -> LinkedNode<ContainerChild>,
{
{
let mut links = self.child_nodes.borrow_mut();
if links.contains_key(&new.id()) {
log::error!("Tried to add a child to a container that already contains the child");
return;
}
links.insert(
new.id(),
f(ContainerChild {
node: new.clone(),
active: Cell::new(false),
body: Default::default(),
content: Default::default(),
factor: Cell::new(0.0),
title: Default::default(),
}),
);
}
new.clone().set_workspace(&self.workspace.get());
new.clone().set_parent(self.clone());
let num_children = self.num_children.fetch_add(1) + 1;
self.update_content_size();
let new_child_factor = 1.0 / num_children as f64;
let mut sum_factors = 0.0;
for child in self.children.iter() {
let factor = if rc_eq(&child.node, &new) {
new_child_factor
} else {
child.factor.get() * (1.0 - new_child_factor)
};
child.factor.set(factor);
sum_factors += factor;
}
self.sum_factors.set(sum_factors);
self.schedule_layout();
self.cancel_seat_ops();
}
fn cancel_seat_ops(&self) {
let mut seats = self.seats.borrow_mut();
for seat in seats.values_mut() {
seat.op = None;
}
}
pub fn on_spaces_changed(self: &Rc<Self>) {
self.update_content_size();
self.schedule_layout();
}
pub fn on_colors_changed(self: &Rc<Self>) {
self.schedule_compute_render_data();
}
fn schedule_layout(self: &Rc<Self>) {
if !self.layout_scheduled.replace(true) {
self.state.pending_container_layout.push(self.clone());
}
}
fn perform_layout(self: &Rc<Self>) {
self.layout_scheduled.set(false);
if let Some(child) = self.mono_child.get() {
self.perform_mono_layout(&child);
} else {
self.perform_split_layout();
}
self.schedule_compute_render_data();
}
fn perform_mono_layout(self: &Rc<Self>, child: &ContainerChild) {
let mb = self.mono_body.get();
child
.node
.clone()
.change_extents(&mb.move_(self.abs_x1.get(), self.abs_y1.get()));
self.mono_content
.set(child.content.get().at_point(mb.x1(), mb.y1()));
}
fn perform_split_layout(self: &Rc<Self>) {
let sum_factors = self.sum_factors.get();
let border_width = self.state.theme.border_width.get();
let title_height = self.state.theme.title_height.get();
let split = self.split.get();
let (content_size, other_content_size) = match split {
ContainerSplit::Horizontal => (self.content_width.get(), self.content_height.get()),
ContainerSplit::Vertical => (self.content_height.get(), self.content_width.get()),
};
let num_children = self.num_children.get();
let mut pos = 0;
let mut remaining_content_size = content_size;
for child in self.children.iter() {
let factor = child.factor.get() / sum_factors;
child.factor.set(factor);
let mut body_size = (content_size as f64 * factor).round() as i32;
body_size = body_size.min(remaining_content_size);
remaining_content_size -= body_size;
let (x1, y1, width, height) = match split {
ContainerSplit::Horizontal => {
(pos, title_height + 1, body_size, other_content_size)
}
_ => (0, pos + title_height + 1, other_content_size, body_size),
};
let body = Rect::new_sized(x1, y1, width, height).unwrap();
child.body.set(body);
pos += body_size + border_width;
if split == ContainerSplit::Vertical {
pos += title_height + 1;
}
}
if remaining_content_size > 0 {
let size_per = remaining_content_size / num_children as i32;
let mut rem = remaining_content_size % num_children as i32;
pos = 0;
for child in self.children.iter() {
let mut body = child.body.get();
let mut add = size_per;
if rem > 0 {
rem -= 1;
add += 1;
}
let (x1, y1, width, height, size) = match split {
ContainerSplit::Horizontal => {
let width = body.width() + add;
(pos, title_height + 1, width, other_content_size, width)
}
_ => {
let height = body.height() + add;
(
0,
pos + title_height + 1,
other_content_size,
height,
height,
)
}
};
body = Rect::new_sized(x1, y1, width, height).unwrap();
child.body.set(body);
pos += size + border_width;
if split == ContainerSplit::Vertical {
pos += title_height + 1;
}
}
}
self.sum_factors.set(1.0);
for child in self.children.iter() {
let body = child.body.get().move_(self.abs_x1.get(), self.abs_y1.get());
child.node.clone().change_extents(&body);
child.position_content();
}
}
fn update_content_size(&self) {
let border_width = self.state.theme.border_width.get();
let title_height = self.state.theme.title_height.get();
let nc = self.num_children.get();
match self.split.get() {
ContainerSplit::Horizontal => {
let new_content_size = self.width.get().sub((nc - 1) as i32 * border_width).max(0);
self.content_width.set(new_content_size);
self.content_height
.set(self.height.get().sub(title_height + 1).max(0));
}
ContainerSplit::Vertical => {
let new_content_size = self
.height
.get()
.sub(title_height + 1 + (nc - 1) as i32 * (border_width + title_height + 1))
.max(0);
self.content_height.set(new_content_size);
self.content_width.set(self.width.get());
}
}
self.mono_body.set(
Rect::new_sized(
0,
title_height + 1,
self.width.get(),
self.height.get().sub(title_height + 1).max(0),
)
.unwrap(),
);
}
fn pointer_move(self: &Rc<Self>, seat: &Rc<WlSeatGlobal>, mut x: i32, mut y: i32) {
let title_height = self.state.theme.title_height.get();
let mut seats = self.seats.borrow_mut();
let seat_state = seats.entry(seat.id()).or_insert_with(|| SeatState {
cursor: KnownCursor::Default,
target: false,
x,
y,
op: None,
});
seat_state.x = x;
seat_state.y = y;
if let Some(op) = &seat_state.op {
match op.kind {
SeatOpKind::Move => {
// todo
}
SeatOpKind::Resize {
dist_left,
dist_right,
} => {
let prev = op.child.prev().unwrap();
let prev_body = prev.body.get();
let child_body = op.child.body.get();
let (prev_factor, child_factor) = match self.split.get() {
ContainerSplit::Horizontal => {
let cw = self.content_width.get();
x = x
.max(prev_body.x1() + dist_left)
.min(child_body.x2() - dist_right);
let prev_factor = (x - prev_body.x1() - dist_left) as f64 / cw as f64;
let child_factor =
(child_body.x2() - x - dist_right) as f64 / cw as f64;
(prev_factor, child_factor)
}
ContainerSplit::Vertical => {
let ch = self.content_height.get();
y = y
.max(prev_body.y1() + dist_left)
.min(child_body.y2() - dist_right);
let prev_factor = (y - prev_body.y1() - dist_left) as f64 / ch as f64;
let child_factor =
(child_body.y2() - y - dist_right) as f64 / ch as f64;
(prev_factor, child_factor)
}
};
let sum_factors =
self.sum_factors.get() - prev.factor.get() - op.child.factor.get()
+ prev_factor
+ child_factor;
prev.factor.set(prev_factor);
op.child.factor.set(child_factor);
self.sum_factors.set(sum_factors);
self.schedule_layout();
}
}
return;
}
let new_cursor = if self.mono_child.get().is_some() {
KnownCursor::Default
} else if self.split.get() == ContainerSplit::Horizontal {
if y < title_height + 1 {
KnownCursor::Default
} else {
KnownCursor::ResizeLeftRight
}
} else {
let mut cursor = KnownCursor::Default;
for child in self.children.iter() {
let body = child.body.get();
if body.y1() > y {
if body.y1() - y > title_height + 1 {
cursor = KnownCursor::ResizeTopBottom
}
break;
}
}
cursor
};
if new_cursor != mem::replace(&mut seat_state.cursor, new_cursor) {
if seat_state.target {
seat.set_known_cursor(new_cursor);
}
}
}
fn update_title(self: &Rc<Self>) {
let mut title = self.title.borrow_mut();
title.clear();
if let Some(mc) = self.mono_child.get() {
title.push_str("M[");
title.push_str(mc.title.borrow_mut().deref());
title.push_str("]");
} else {
let split = match self.split.get() {
ContainerSplit::Horizontal => "H",
ContainerSplit::Vertical => "V",
};
title.push_str(split);
title.push_str("[");
for (i, c) in self.children.iter().enumerate() {
if i > 0 {
title.push_str(", ");
}
title.push_str(c.title.borrow_mut().deref());
}
title.push_str("]");
}
self.parent.get().child_title_changed(&**self, &title);
}
pub fn schedule_compute_render_data(self: &Rc<Self>) {
if !self.compute_render_data_scheduled.replace(true) {
self.state.pending_container_render_data.push(self.clone());
}
}
fn compute_render_data(&self) {
self.compute_render_data_scheduled.set(false);
let mut rd = self.render_data.borrow_mut();
let rd = rd.deref_mut();
let theme = &self.state.theme;
let th = theme.title_height.get();
let bw = theme.border_width.get();
let font = theme.font.borrow_mut();
let cwidth = self.width.get();
let cheight = self.height.get();
let num_children = self.num_children.get() as i32;
let ctx = self.state.render_ctx.get();
rd.titles.clear();
rd.title_rects.clear();
rd.active_title_rects.clear();
rd.border_rects.clear();
rd.underline_rects.clear();
let mut render_title = |title: &str, width: i32, x: i32, y: i32| {
if th == 0 || width == 0 || title.is_empty() {
return;
}
if let Some(ctx) = &ctx {
match text::render(ctx, width, th, &font, title, Color::GREY) {
Ok(t) => rd.titles.push(ContainerTitle { x, y, tex: t }),
Err(e) => {
log::error!("Could not render title {}: {}", title, ErrorFmt(e));
}
}
}
};
if self.mono_child.get().is_some() {
let content_width = self.width.get().sub(bw * (num_children - 1)).max(0);
let space_per_child = content_width / num_children;
let mut rem = content_width % num_children;
let mut pos = 0;
for (i, c) in self.children.iter().enumerate() {
if i > 0 {
rd.border_rects
.push(Rect::new_sized(pos - bw, 0, bw, th).unwrap());
}
let mut width = space_per_child;
if rem > 0 {
rem -= 1;
width += 1;
}
let rect = Rect::new_sized(pos, 0, width, th).unwrap();
if c.active.get() {
rd.active_title_rects.push(rect);
} else {
rd.title_rects.push(rect);
}
let title = c.title.borrow_mut();
render_title(&title, width, pos, 0);
pos += width + bw;
}
rd.underline_rects
.push(Rect::new_sized(0, th, cwidth, 1).unwrap());
} else {
let split = self.split.get();
for (i, c) in self.children.iter().enumerate() {
let body = c.body.get();
if i > 0 {
let rect = if split == ContainerSplit::Horizontal {
Rect::new_sized(body.x1() - bw, 0, bw, cheight).unwrap()
} else {
Rect::new_sized(0, body.y1() - th - 1 - bw, cwidth, bw).unwrap()
};
rd.border_rects.push(rect);
}
let rect =
Rect::new_sized(body.x1(), body.y1() - th - 1, body.width(), th).unwrap();
if c.active.get() {
rd.active_title_rects.push(rect);
} else {
rd.title_rects.push(rect);
}
let rect = Rect::new_sized(body.x1(), body.y1() - 1, body.width(), 1).unwrap();
rd.underline_rects.push(rect);
let title = c.title.borrow_mut();
render_title(&title, body.width(), body.x1(), body.y1() - th - 1);
}
}
}
}
struct SeatOp {
child: NodeRef<ContainerChild>,
kind: SeatOpKind,
}
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
enum SeatOpKind {
Move,
Resize { dist_left: i32, dist_right: i32 },
}
pub async fn container_layout(state: Rc<State>) {
loop {
let container = state.pending_container_layout.pop().await;
if container.layout_scheduled.get() {
container.perform_layout();
}
}
}
pub async fn container_render_data(state: Rc<State>) {
loop {
let container = state.pending_container_render_data.pop().await;
if container.compute_render_data_scheduled.get() {
container.compute_render_data();
}
}
}
impl Node for ContainerNode {
fn id(&self) -> NodeId {
self.id.into()
}
fn seat_state(&self) -> &NodeSeatState {
&self.seat_state
}
fn destroy_node(&self, detach: bool) {
if detach {
self.parent.get().remove_child(self);
}
mem::take(self.seats.borrow_mut().deref_mut());
let mut cn = self.child_nodes.borrow_mut();
for (_, n) in cn.drain() {
n.node.destroy_node(false);
}
self.seat_state.destroy_node(self);
}
fn visit(self: Rc<Self>, visitor: &mut dyn NodeVisitor) {
visitor.visit_container(&self);
}
fn visit_children(&self, visitor: &mut dyn NodeVisitor) {
for child in self.children.iter() {
child.node.clone().visit(visitor);
}
}
fn get_workspace(&self) -> Option<Rc<WorkspaceNode>> {
Some(self.workspace.get())
}
fn is_contained_in(&self, other: NodeId) -> bool {
let parent = self.parent.get();
if parent.id() == other {
return true;
}
parent.is_contained_in(other)
}
fn child_title_changed(self: Rc<Self>, child: &dyn Node, title: &str) {
let child = match self.child_nodes.borrow_mut().get(&child.id()) {
Some(cn) => cn.to_ref(),
_ => return,
};
{
let mut ct = child.title.borrow_mut();
if ct.deref() == title {
return;
}
ct.clear();
ct.push_str(title);
}
self.update_title();
self.schedule_compute_render_data();
}
fn get_mono(&self) -> Option<bool> {
Some(self.mono_child.get().is_some())
}
fn get_split(&self) -> Option<ContainerSplit> {
Some(self.split.get())
}
fn set_mono(self: Rc<Self>, child: Option<&dyn Node>) {
if self.mono_child.get().is_some() != child.is_some() {
let children = self.child_nodes.borrow_mut();
let child = match child {
Some(c) => match children.get(&c.id()) {
Some(c) => Some(c.to_ref()),
_ => return,
},
_ => None,
};
self.mono_child.set(child);
self.schedule_layout();
self.update_title();
}
}
fn set_split(self: Rc<Self>, split: ContainerSplit) {
if self.split.replace(split) != split {
self.update_content_size();
self.schedule_layout();
self.update_title();
}
}
fn focus_self(self: Rc<Self>, seat: &Rc<WlSeatGlobal>) {
seat.focus_node(self);
}
fn do_focus(self: Rc<Self>, seat: &Rc<WlSeatGlobal>, direction: Direction) {
let node = if let Some(cn) = self.mono_child.get() {
Some(cn)
} else {
match direction {
Direction::Left => self.children.last(),
Direction::Down => self.children.first(),
Direction::Up => self.children.last(),
Direction::Right => self.children.first(),
}
};
if let Some(node) = node {
node.node.clone().do_focus(seat, direction);
}
}
fn move_focus(self: Rc<Self>, seat: &Rc<WlSeatGlobal>, direction: Direction) {
if direction == Direction::Down {
self.do_focus(seat, direction);
return;
}
self.parent
.get()
.move_focus_from_child(seat, &*self, direction);
}
fn move_self(self: Rc<Self>, direction: Direction) {
self.parent.get().move_child(self, direction);
}
fn move_focus_from_child(
&self,
seat: &Rc<WlSeatGlobal>,
child: &dyn Node,
direction: Direction,
) {
let child = match self.child_nodes.borrow_mut().get(&child.id()) {
Some(c) => c.to_ref(),
_ => return,
};
let mc = self.mono_child.get();
let in_line = if mc.is_some() {
matches!(direction, Direction::Left | Direction::Right)
} else {
match self.split.get() {
ContainerSplit::Horizontal => {
matches!(direction, Direction::Left | Direction::Right)
}
ContainerSplit::Vertical => matches!(direction, Direction::Up | Direction::Down),
}
};
if !in_line {
self.parent
.get()
.move_focus_from_child(seat, self, direction);
return;
}
let prev = match direction {
Direction::Left => true,
Direction::Down => false,
Direction::Up => true,
Direction::Right => false,
};
let sibling = match prev {
true => child.prev(),
false => child.next(),
};
let sibling = match sibling {
Some(s) => s,
None => {
self.parent
.get()
.move_focus_from_child(seat, self, direction);
return;
}
};
if mc.is_some() {
self.mono_child.set(Some(sibling.clone()));
let body = self.mono_body.get();
self.mono_content
.set(sibling.content.get().at_point(body.x1(), body.y1()));
sibling
.node
.clone()
.change_extents(&body.move_(self.abs_x1.get(), self.abs_y1.get()));
}
sibling.node.clone().do_focus(seat, direction);
}
//
fn move_child(self: Rc<Self>, child: Rc<dyn Node>, direction: Direction) {
// CASE 1: This is the only child of the container. Replace the container by the child.
if self.num_children.get() == 1 {
let parent = self.parent.get();
if parent.accepts_child(&*child) {
parent.replace_child(&*self, child.clone());
}
return;
}
let (split, prev) = direction_to_split(direction);
// CASE 2: We're moving the child within the container.
if split == self.split.get() {
let cc = match self.child_nodes.borrow_mut().get(&child.id()) {
Some(l) => l.to_ref(),
None => return,
};
let neighbor = match prev {
true => cc.prev(),
false => cc.next(),
};
if let Some(neighbor) = neighbor {
if neighbor.node.accepts_child(&*child) {
self.remove_child(&*child);
neighbor.node.clone().insert_child(child, direction);
return;
}
let cc = cc.deref().clone();
let link = match prev {
true => neighbor.prepend(cc),
false => neighbor.append(cc),
};
self.child_nodes.borrow_mut().insert(child.id(), link);
self.schedule_layout();
return;
}
}
// CASE 3: We're moving the child out of the container.
let mut neighbor = self.clone();
let mut parent_opt = self.parent.get().into_container();
while let Some(parent) = &parent_opt {
if parent.split.get() == split {
break;
}
neighbor = parent.clone();
parent_opt = parent.parent.get().into_container();
}
let parent = match parent_opt {
Some(p) => p,
_ => return,
};
self.clone().remove_child(&*child);
match prev {
true => parent.add_child_before(&*neighbor, child.clone()),
false => parent.add_child_after(&*neighbor, child.clone()),
}
}
fn absolute_position(&self) -> Rect {
Rect::new_sized(
self.abs_x1.get(),
self.abs_y1.get(),
self.width.get(),
self.height.get(),
)
.unwrap()
}
fn active_changed(&self, active: bool) {
self.active.set(active);
self.parent.get().child_active_changed(self, active);
}
fn button(self: Rc<Self>, seat: &Rc<WlSeatGlobal>, button: u32, state: KeyState) {
if button != BTN_LEFT {
return;
}
let title_height = self.state.theme.title_height.get();
let mut seat_datas = self.seats.borrow_mut();
let seat_data = match seat_datas.get_mut(&seat.id()) {
Some(s) => s,
_ => return,
};
if seat_data.op.is_none() {
if state != KeyState::Pressed {
return;
}
let (kind, child) = 'res: {
if self.mono_child.get().is_some() {
let width_per_child = self.width.get() / self.num_children.get() as i32;
let mut width_per_child_rem = self.width.get() % self.num_children.get() as i32;
let mut pos = 0;
for child in self.children.iter() {
pos += width_per_child;
if width_per_child_rem > 0 {
pos += 1;
width_per_child_rem -= 1;
}
if pos > seat_data.x {
break 'res (SeatOpKind::Move, child);
}
}
} else if self.split.get() == ContainerSplit::Horizontal {
for child in self.children.iter() {
let body = child.body.get();
if seat_data.x < body.x2() {
let op = if seat_data.x < body.x1() {
SeatOpKind::Resize {
dist_left: seat_data.x - child.prev().unwrap().body.get().x2(),
dist_right: body.x1() - seat_data.x,
}
} else {
SeatOpKind::Move
};
break 'res (op, child);
}
}
} else {
for child in self.children.iter() {
let body = child.body.get();
if seat_data.y < body.y1() {
let op = if seat_data.y < body.y1() - title_height - 1 {
SeatOpKind::Resize {
dist_left: seat_data.y - child.prev().unwrap().body.get().y2(),
dist_right: body.y1() - seat_data.y,
}
} else {
SeatOpKind::Move
};
break 'res (op, child);
}
}
};
return;
};
seat_data.op = Some(SeatOp { child, kind })
} else if state == KeyState::Released {
let op = seat_data.op.take().unwrap();
drop(seat_datas);
if op.kind == SeatOpKind::Move {
// todo
}
}
}
fn focus_parent(&self, seat: &Rc<WlSeatGlobal>) {
self.parent.get().focus_self(seat);
}
fn toggle_floating(self: Rc<Self>, _seat: &Rc<WlSeatGlobal>) {
let parent = self.parent.get();
parent.clone().remove_child(&*self);
if parent.is_float() {
self.state.map_tiled(self.clone());
} else {
self.state.map_floating(
self.clone(),
self.width.get(),
self.height.get(),
&self.workspace.get(),
);
}
}
fn find_tree_at(&self, x: i32, y: i32, tree: &mut Vec<FoundNode>) -> FindTreeResult {
let mut recurse = |content: Rect, child: NodeRef<ContainerChild>| {
if content.contains(x, y) {
let (x, y) = content.translate(x, y);
tree.push(FoundNode {
node: child.node.clone(),
x,
y,
});
child.node.find_tree_at(x, y, tree);
}
};
if let Some(child) = self.mono_child.get() {
recurse(self.mono_content.get(), child);
} else {
for child in self.children.iter() {
if child.body.get().contains(x, y) {
recurse(child.content.get(), child);
break;
}
}
}
FindTreeResult::AcceptsInput
}
fn replace_child(self: Rc<Self>, old: &dyn Node, new: Rc<dyn Node>) {
let node = match self.child_nodes.borrow_mut().remove(&old.id()) {
Some(c) => c,
None => return,
};
let link = node.append(ContainerChild {
node: new.clone(),
active: Cell::new(false),
body: Cell::new(node.body.get()),
content: Cell::new(node.content.get()),
factor: Cell::new(node.factor.get()),
title: Default::default(),
});
let body = link.body.get();
drop(node);
self.child_nodes.borrow_mut().insert(new.id(), link);
new.clone().set_parent(self.clone());
new.clone().set_workspace(&self.workspace.get());
let body = body.move_(self.abs_x1.get(), self.abs_y1.get());
new.clone().change_extents(&body);
}
fn remove_child(self: Rc<Self>, child: &dyn Node) {
let node = match self.child_nodes.borrow_mut().remove(&child.id()) {
Some(c) => c,
None => return,
};
let mut mono_child = None;
if let Some(mono) = self.mono_child.get() {
if mono.node.id() == child.id() {
self.mono_child.take();
mono_child = node.next();
if mono_child.is_none() {
mono_child = node.prev();
}
}
}
let node = {
let node = node;
node.to_ref()
};
let num_children = self.num_children.fetch_sub(1) - 1;
if num_children == 0 {
self.seats.borrow_mut().clear();
self.parent.get().remove_child(&*self);
return;
}
self.update_content_size();
let rem = 1.0 - node.factor.get();
let mut sum = 0.0;
if rem <= 0.0 {
let factor = 1.0 / num_children as f64;
for child in self.children.iter() {
child.factor.set(factor)
}
sum = 1.0;
} else {
for child in self.children.iter() {
let factor = child.factor.get() / rem;
child.factor.set(factor);
sum += factor;
}
}
if mono_child.is_some() {
self.mono_child.set(mono_child);
}
self.sum_factors.set(sum);
self.update_title();
self.schedule_layout();
self.cancel_seat_ops();
}
fn child_size_changed(&self, child: &dyn Node, width: i32, height: i32) {
let cn = self.child_nodes.borrow();
if let Some(node) = cn.get(&child.id()) {
let rect = Rect::new(0, 0, width, height).unwrap();
node.content.set(rect);
node.position_content();
if let Some(mono) = self.mono_child.get() {
if mono.node.id() == node.node.id() {
let body = self.mono_body.get();
self.mono_content.set(rect.at_point(body.x1(), body.y1()));
}
}
}
}
fn child_active_changed(self: Rc<Self>, child: &dyn Node, active: bool) {
let node = match self.child_nodes.borrow_mut().get(&child.id()) {
Some(l) => l.to_ref(),
None => return,
};
node.active.set(active);
self.schedule_compute_render_data();
}
fn pointer_enter(self: Rc<Self>, seat: &Rc<WlSeatGlobal>, x: Fixed, y: Fixed) {
self.pointer_move(seat, x.round_down(), y.round_down());
}
fn pointer_unfocus(&self, seat: &Rc<WlSeatGlobal>) {
let mut seats = self.seats.borrow_mut();
if let Some(seat_state) = seats.get_mut(&seat.id()) {
seat_state.target = false;
}
}
fn pointer_focus(&self, seat: &Rc<WlSeatGlobal>) {
let mut seats = self.seats.borrow_mut();
if let Some(seat_state) = seats.get_mut(&seat.id()) {
seat_state.target = true;
seat.set_known_cursor(seat_state.cursor);
}
}
fn pointer_motion(self: Rc<Self>, seat: &Rc<WlSeatGlobal>, x: Fixed, y: Fixed) {
self.pointer_move(seat, x.round_down(), y.round_down());
}
fn render(&self, renderer: &mut Renderer, x: i32, y: i32) {
renderer.render_container(self, x, y);
}
fn into_container(self: Rc<Self>) -> Option<Rc<ContainerNode>> {
Some(self)
}
fn is_container(&self) -> bool {
true
}
fn accepts_child(&self, _node: &dyn Node) -> bool {
true
}
fn insert_child(self: Rc<Self>, node: Rc<dyn Node>, direction: Direction) {
let (split, right) = direction_to_split(direction);
if split != self.split.get() || right {
self.append_child(node);
} else {
self.prepend_child(node);
}
}
fn change_extents(self: Rc<Self>, rect: &Rect) {
self.abs_x1.set(rect.x1());
self.abs_y1.set(rect.y1());
let mut size_changed = false;
size_changed |= self.width.replace(rect.width()) != rect.width();
size_changed |= self.height.replace(rect.height()) != rect.height();
if size_changed {
self.update_content_size();
self.perform_layout();
self.cancel_seat_ops();
self.parent
.get()
.child_size_changed(&*self, rect.width(), rect.height());
} else {
if let Some(c) = self.mono_child.get() {
let body = self
.mono_body
.get()
.move_(self.abs_x1.get(), self.abs_y1.get());
c.node.clone().change_extents(&body);
} else {
for child in self.children.iter() {
let body = child.body.get().move_(self.abs_x1.get(), self.abs_y1.get());
child.node.clone().change_extents(&body);
}
}
}
}
fn set_workspace(self: Rc<Self>, ws: &Rc<WorkspaceNode>) {
for child in self.children.iter() {
child.node.clone().set_workspace(ws);
}
self.workspace.set(ws.clone());
}
fn set_parent(self: Rc<Self>, parent: Rc<dyn Node>) {
self.parent.set(parent.clone());
parent
.clone()
.child_active_changed(&*self, self.active.get());
parent.child_size_changed(&*self, self.width.get(), self.height.get());
parent
.clone()
.child_title_changed(&*self, self.title.borrow_mut().deref());
}
}
fn direction_to_split(dir: Direction) -> (ContainerSplit, bool) {
match dir {
Direction::Left => (ContainerSplit::Horizontal, true),
Direction::Down => (ContainerSplit::Vertical, false),
Direction::Up => (ContainerSplit::Vertical, true),
Direction::Right => (ContainerSplit::Horizontal, false),
}
}