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authorLibravatar Héctor Ramón Jiménez <hector0193@gmail.com>2023-03-04 05:37:11 +0100
committerLibravatar Héctor Ramón Jiménez <hector0193@gmail.com>2023-03-04 05:37:11 +0100
commit3a0d34c0240f4421737a6a08761f99d6f8140d02 (patch)
treec9a4a6b8e9c1db1b8fcd05bc98e3f131d5ef4bd5 /native/src/widget/pane_grid/node.rs
parentc54409d1711e1f615c7ea4b02c082954e340632a (diff)
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Create `iced_widget` subcrate and re-organize the whole codebase
Diffstat (limited to 'native/src/widget/pane_grid/node.rs')
-rw-r--r--native/src/widget/pane_grid/node.rs250
1 files changed, 0 insertions, 250 deletions
diff --git a/native/src/widget/pane_grid/node.rs b/native/src/widget/pane_grid/node.rs
deleted file mode 100644
index cc304b96..00000000
--- a/native/src/widget/pane_grid/node.rs
+++ /dev/null
@@ -1,250 +0,0 @@
-use crate::widget::pane_grid::{Axis, Pane, Split};
-use crate::{Rectangle, Size};
-
-use std::collections::BTreeMap;
-
-/// A layout node of a [`PaneGrid`].
-///
-/// [`PaneGrid`]: crate::widget::PaneGrid
-#[derive(Debug, Clone)]
-pub enum Node {
- /// The region of this [`Node`] is split into two.
- Split {
- /// The [`Split`] of this [`Node`].
- id: Split,
-
- /// The direction of the split.
- axis: Axis,
-
- /// The ratio of the split in [0.0, 1.0].
- ratio: f32,
-
- /// The left/top [`Node`] of the split.
- a: Box<Node>,
-
- /// The right/bottom [`Node`] of the split.
- b: Box<Node>,
- },
- /// The region of this [`Node`] is taken by a [`Pane`].
- Pane(Pane),
-}
-
-impl Node {
- /// Returns an iterator over each [`Split`] in this [`Node`].
- pub fn splits(&self) -> impl Iterator<Item = &Split> {
- let mut unvisited_nodes = vec![self];
-
- std::iter::from_fn(move || {
- while let Some(node) = unvisited_nodes.pop() {
- if let Node::Split { id, a, b, .. } = node {
- unvisited_nodes.push(a);
- unvisited_nodes.push(b);
-
- return Some(id);
- }
- }
-
- None
- })
- }
-
- /// Returns the rectangular region for each [`Pane`] in the [`Node`] given
- /// the spacing between panes and the total available space.
- pub fn pane_regions(
- &self,
- spacing: f32,
- size: Size,
- ) -> BTreeMap<Pane, Rectangle> {
- let mut regions = BTreeMap::new();
-
- self.compute_regions(
- spacing,
- &Rectangle {
- x: 0.0,
- y: 0.0,
- width: size.width,
- height: size.height,
- },
- &mut regions,
- );
-
- regions
- }
-
- /// Returns the axis, rectangular region, and ratio for each [`Split`] in
- /// the [`Node`] given the spacing between panes and the total available
- /// space.
- pub fn split_regions(
- &self,
- spacing: f32,
- size: Size,
- ) -> BTreeMap<Split, (Axis, Rectangle, f32)> {
- let mut splits = BTreeMap::new();
-
- self.compute_splits(
- spacing,
- &Rectangle {
- x: 0.0,
- y: 0.0,
- width: size.width,
- height: size.height,
- },
- &mut splits,
- );
-
- splits
- }
-
- pub(crate) fn find(&mut self, pane: &Pane) -> Option<&mut Node> {
- match self {
- Node::Split { a, b, .. } => {
- a.find(pane).or_else(move || b.find(pane))
- }
- Node::Pane(p) => {
- if p == pane {
- Some(self)
- } else {
- None
- }
- }
- }
- }
-
- pub(crate) fn split(&mut self, id: Split, axis: Axis, new_pane: Pane) {
- *self = Node::Split {
- id,
- axis,
- ratio: 0.5,
- a: Box::new(self.clone()),
- b: Box::new(Node::Pane(new_pane)),
- };
- }
-
- pub(crate) fn update(&mut self, f: &impl Fn(&mut Node)) {
- if let Node::Split { a, b, .. } = self {
- a.update(f);
- b.update(f);
- }
-
- f(self);
- }
-
- pub(crate) fn resize(&mut self, split: &Split, percentage: f32) -> bool {
- match self {
- Node::Split {
- id, ratio, a, b, ..
- } => {
- if id == split {
- *ratio = percentage;
-
- true
- } else if a.resize(split, percentage) {
- true
- } else {
- b.resize(split, percentage)
- }
- }
- Node::Pane(_) => false,
- }
- }
-
- pub(crate) fn remove(&mut self, pane: &Pane) -> Option<Pane> {
- match self {
- Node::Split { a, b, .. } => {
- if a.pane() == Some(*pane) {
- *self = *b.clone();
- Some(self.first_pane())
- } else if b.pane() == Some(*pane) {
- *self = *a.clone();
- Some(self.first_pane())
- } else {
- a.remove(pane).or_else(|| b.remove(pane))
- }
- }
- Node::Pane(_) => None,
- }
- }
-
- fn pane(&self) -> Option<Pane> {
- match self {
- Node::Split { .. } => None,
- Node::Pane(pane) => Some(*pane),
- }
- }
-
- fn first_pane(&self) -> Pane {
- match self {
- Node::Split { a, .. } => a.first_pane(),
- Node::Pane(pane) => *pane,
- }
- }
-
- fn compute_regions(
- &self,
- spacing: f32,
- current: &Rectangle,
- regions: &mut BTreeMap<Pane, Rectangle>,
- ) {
- match self {
- Node::Split {
- axis, ratio, a, b, ..
- } => {
- let (region_a, region_b) = axis.split(current, *ratio, spacing);
-
- a.compute_regions(spacing, &region_a, regions);
- b.compute_regions(spacing, &region_b, regions);
- }
- Node::Pane(pane) => {
- let _ = regions.insert(*pane, *current);
- }
- }
- }
-
- fn compute_splits(
- &self,
- spacing: f32,
- current: &Rectangle,
- splits: &mut BTreeMap<Split, (Axis, Rectangle, f32)>,
- ) {
- match self {
- Node::Split {
- axis,
- ratio,
- a,
- b,
- id,
- } => {
- let (region_a, region_b) = axis.split(current, *ratio, spacing);
-
- let _ = splits.insert(*id, (*axis, *current, *ratio));
-
- a.compute_splits(spacing, &region_a, splits);
- b.compute_splits(spacing, &region_b, splits);
- }
- Node::Pane(_) => {}
- }
- }
-}
-
-impl std::hash::Hash for Node {
- fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
- match self {
- Node::Split {
- id,
- axis,
- ratio,
- a,
- b,
- } => {
- id.hash(state);
- axis.hash(state);
- ((ratio * 100_000.0) as u32).hash(state);
- a.hash(state);
- b.hash(state);
- }
- Node::Pane(pane) => {
- pane.hash(state);
- }
- }
- }
-}