lgui_core/core/view/
tree.rs

1use super::{
2    compile_scene, ActionId, ComponentId, ComponentTree, CompositingLayerSpec, EventPolicy,
3    InteractionRole, Point, RenderPhase, Scene, UiAction, UiActionHandler, UiEvent, UiEventHandler,
4    UiEventKind, UiEventPayload, UiHandlerEvent, UiId, UiNode, UiRect,
5};
6use std::{
7    collections::{HashMap, HashSet},
8    sync::Arc,
9};
10
11#[derive(Clone)]
12pub struct HitResult {
13    pub id: UiId,
14    pub rect: UiRect,
15    pub interaction: InteractionRole,
16    pub policy: EventPolicy,
17    pub action: Option<UiAction>,
18    pub action_target: Option<UiId>,
19    pub capture_handlers: Vec<UiEventHandler>,
20    pub bubble_handlers: Vec<UiEventHandler>,
21    pub click_handler: Option<UiEventHandler>,
22}
23
24impl std::fmt::Debug for HitResult {
25    fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
26        formatter
27            .debug_struct("HitResult")
28            .field("id", &self.id)
29            .field("rect", &self.rect)
30            .field("interaction", &self.interaction)
31            .field("policy", &self.policy)
32            .field("action", &self.action)
33            .field("action_target", &self.action_target)
34            .field("capture_handlers", &self.capture_handlers.len())
35            .field("bubble_handlers", &self.bubble_handlers.len())
36            .field("has_click_handler", &self.click_handler.is_some())
37            .finish()
38    }
39}
40
41impl PartialEq for HitResult {
42    fn eq(&self, other: &Self) -> bool {
43        self.id == other.id
44            && self.rect == other.rect
45            && self.interaction == other.interaction
46            && self.policy == other.policy
47            && self.action == other.action
48            && self.action_target == other.action_target
49            && self.capture_handlers.len() == other.capture_handlers.len()
50            && self.bubble_handlers.len() == other.bubble_handlers.len()
51            && self.click_handler.is_some() == other.click_handler.is_some()
52    }
53}
54
55impl Eq for HitResult {}
56
57#[derive(Clone, Default)]
58pub struct HostTree {
59    nodes: Vec<Arc<UiNode>>,
60    node_indices: Arc<HashMap<UiId, usize>>,
61    owners: Arc<HashMap<ComponentId, HashSet<UiId>>>,
62    projection_changes: ProjectionChanges,
63}
64
65impl HostTree {
66    /// Returns a conservative estimate of retained tree storage, including shared node payloads.
67    pub fn estimated_bytes(&self) -> usize {
68        std::mem::size_of::<Self>()
69            .saturating_add(
70                self.nodes
71                    .capacity()
72                    .saturating_mul(std::mem::size_of::<Arc<UiNode>>()),
73            )
74            .saturating_add(
75                self.nodes
76                    .iter()
77                    .map(|node| node.estimated_bytes())
78                    .sum::<usize>(),
79            )
80    }
81}
82
83#[derive(Clone, Default)]
84pub(crate) struct ProjectionChanges {
85    pub changed: std::collections::HashSet<UiId>,
86    pub removed: std::collections::HashSet<UiId>,
87    pub structure_changed: bool,
88    pub(crate) animation_sync: std::collections::HashSet<UiId>,
89    pub(crate) focus_sync: bool,
90}
91
92mod events;
93mod mutation;
94mod scene;
95
96#[cfg(test)]
97#[path = "tree/tree_test.rs"]
98mod tests;
lgui_core/core/view/tree.rs

lgui_core/core/view/
tree.rs
