diff options
Diffstat (limited to 'native/src/widget/row.rs')
-rw-r--r-- | native/src/widget/row.rs | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/native/src/widget/row.rs b/native/src/widget/row.rs new file mode 100644 index 00000000..3cd451b7 --- /dev/null +++ b/native/src/widget/row.rs @@ -0,0 +1,117 @@ +use std::hash::Hash; + +use crate::{ + Element, Event, Hasher, Layout, MouseCursor, Node, Point, Style, Widget, +}; + +/// A container that distributes its contents horizontally. +pub type Row<'a, Message, Renderer> = + iced_core::Row<Element<'a, Message, Renderer>>; + +impl<'a, Message, Renderer> Widget<Message, Renderer> + for Row<'a, Message, Renderer> +{ + fn node(&self, renderer: &mut Renderer) -> Node { + let mut children: Vec<Node> = self + .children + .iter() + .map(|child| { + let mut node = child.widget.node(renderer); + + let mut style = node.0.style(); + style.margin.end = + stretch::style::Dimension::Points(f32::from(self.spacing)); + + node.0.set_style(style); + node + }) + .collect(); + + if let Some(node) = children.last_mut() { + let mut style = node.0.style(); + style.margin.end = stretch::style::Dimension::Undefined; + + node.0.set_style(style); + } + + let mut style = Style::default() + .width(self.width) + .height(self.height) + .max_width(self.max_width) + .max_height(self.max_height) + .padding(self.padding) + .align_self(self.align_self) + .align_items(self.align_items) + .justify_content(self.justify_content); + + style.0.flex_direction = stretch::style::FlexDirection::Row; + + Node::with_children(style, children) + } + + fn on_event( + &mut self, + event: Event, + layout: Layout<'_>, + cursor_position: Point, + messages: &mut Vec<Message>, + ) { + self.children.iter_mut().zip(layout.children()).for_each( + |(child, layout)| { + child + .widget + .on_event(event, layout, cursor_position, messages) + }, + ); + } + + fn draw( + &self, + renderer: &mut Renderer, + layout: Layout<'_>, + cursor_position: Point, + ) -> MouseCursor { + let mut cursor = MouseCursor::OutOfBounds; + + self.children.iter().zip(layout.children()).for_each( + |(child, layout)| { + let new_cursor = + child.widget.draw(renderer, layout, cursor_position); + + if new_cursor != MouseCursor::OutOfBounds { + cursor = new_cursor; + } + }, + ); + + cursor + } + + fn hash_layout(&self, state: &mut Hasher) { + 1.hash(state); + self.width.hash(state); + self.height.hash(state); + self.max_width.hash(state); + self.max_height.hash(state); + self.align_self.hash(state); + self.align_items.hash(state); + self.justify_content.hash(state); + self.spacing.hash(state); + self.spacing.hash(state); + + for child in &self.children { + child.widget.hash_layout(state); + } + } +} + +impl<'a, Message, Renderer> From<Row<'a, Message, Renderer>> + for Element<'a, Message, Renderer> +where + Renderer: 'a, + Message: 'static, +{ + fn from(row: Row<'a, Message, Renderer>) -> Element<'a, Message, Renderer> { + Element::new(row) + } +} |