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https://github.com/bevyengine/bevy
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bca057d7ec
# Objective Problems: * The clipped, non-visible regions of UI nodes are interactive. * `RelativeCursorPostion` is set relative to the visible part of the node. It should be relative to the whole node. * The `RelativeCursorPostion::mouse_over` method returns `true` when the mouse is over a clipped part of a node. fixes #10470 ## Solution Intersect a node's bounding rect with its clipping rect before checking if it contains the cursor. Added the field `normalized_visible_node_rect` to `RelativeCursorPosition`. This is set to the bounds of the unclipped area of the node rect by `ui_focus_system` expressed in normalized coordinates relative to the entire node. Instead of checking if the normalized cursor position lies within a unit square, it instead checks if it is contained by `normalized_visible_node_rect`. Added outlines to the `overflow` example that appear when the cursor is over the visible part of the images, but not the clipped area. --- ## Changelog * `ui_focus_system` intersects a node's bounding rect with its clipping rect before checking if mouse over. * Added the field `normalized_visible_node_rect` to `RelativeCursorPosition`. This is set to the bounds of the unclipped area of the node rect by `ui_focus_system` expressed in normalized coordinates relative to the entire node. * `RelativeCursorPostion` is calculated relative to the whole node's position and size, not only the visible part. * `RelativeCursorPosition::mouse_over` only returns true when the mouse is over an unclipped region of the UI node. * Removed the `Deref` and `DerefMut` derives from `RelativeCursorPosition` as it is no longer a single field struct. * Added some outlines to the `overflow` example that respond to `Interaction` changes. ## Migration Guide The clipped areas of UI nodes are no longer interactive. `RelativeCursorPostion` is now calculated relative to the whole node's position and size, not only the visible part. Its `mouse_over` method only returns true when the cursor is over an unclipped part of the node. `RelativeCursorPosition` no longer implements `Deref` and `DerefMut`.
125 lines
5 KiB
Rust
125 lines
5 KiB
Rust
//! Simple example demonstrating overflow behavior.
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use bevy::{prelude::*, winit::WinitSettings};
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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// Only run the app when there is user input. This will significantly reduce CPU/GPU use.
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.insert_resource(WinitSettings::desktop_app())
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.add_systems(Startup, setup)
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.add_systems(Update, update_outlines)
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.run();
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}
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fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
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commands.spawn(Camera2dBundle::default());
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let text_style = TextStyle {
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font: asset_server.load("fonts/FiraMono-Medium.ttf"),
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font_size: 20.0,
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..default()
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};
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let image = asset_server.load("branding/icon.png");
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commands
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.spawn(NodeBundle {
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style: Style {
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width: Val::Percent(100.),
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height: Val::Percent(100.),
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align_items: AlignItems::Center,
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justify_content: JustifyContent::Center,
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..Default::default()
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},
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background_color: Color::ANTIQUE_WHITE.into(),
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..Default::default()
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})
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.with_children(|parent| {
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for overflow in [
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Overflow::visible(),
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Overflow::clip_x(),
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Overflow::clip_y(),
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Overflow::clip(),
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] {
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parent
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.spawn(NodeBundle {
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style: Style {
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flex_direction: FlexDirection::Column,
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align_items: AlignItems::Center,
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margin: UiRect::horizontal(Val::Px(25.)),
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..Default::default()
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},
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..Default::default()
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})
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.with_children(|parent| {
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let label = format!("{overflow:#?}");
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parent
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.spawn(NodeBundle {
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style: Style {
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padding: UiRect::all(Val::Px(10.)),
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margin: UiRect::bottom(Val::Px(25.)),
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..Default::default()
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},
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background_color: Color::DARK_GRAY.into(),
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..Default::default()
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})
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.with_children(|parent| {
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parent.spawn(TextBundle {
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text: Text::from_section(label, text_style.clone()),
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..Default::default()
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});
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});
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parent
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.spawn(NodeBundle {
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style: Style {
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width: Val::Px(100.),
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height: Val::Px(100.),
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padding: UiRect {
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left: Val::Px(25.),
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top: Val::Px(25.),
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..Default::default()
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},
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overflow,
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..Default::default()
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},
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background_color: Color::GRAY.into(),
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..Default::default()
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})
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.with_children(|parent| {
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parent.spawn((
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ImageBundle {
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image: UiImage::new(image.clone()),
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style: Style {
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min_width: Val::Px(100.),
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min_height: Val::Px(100.),
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..Default::default()
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},
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background_color: Color::WHITE.into(),
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..Default::default()
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},
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Interaction::default(),
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Outline {
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width: Val::Px(2.),
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offset: Val::Px(2.),
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color: Color::NONE,
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},
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));
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});
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});
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}
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});
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}
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fn update_outlines(mut outlines_query: Query<(&mut Outline, Ref<Interaction>)>) {
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for (mut outline, interaction) in outlines_query.iter_mut() {
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if interaction.is_changed() {
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outline.color = match *interaction {
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Interaction::Pressed => Color::RED,
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Interaction::Hovered => Color::WHITE,
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Interaction::None => Color::NONE,
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};
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}
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}
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}
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