use crate::{Align, Bus, Element, Length, Widget}; use dodrio::bumpalo; use std::u32; /// A container that distributes its contents vertically. /// /// A [`Column`] will try to fill the horizontal space of its container. /// /// [`Column`]: struct.Column.html pub struct Column<'a, Message> { spacing: u16, padding: u16, width: Length, height: Length, max_width: u32, max_height: u32, align_items: Align, children: Vec>, } impl<'a, Message> Column<'a, Message> { /// Creates an empty [`Column`]. /// /// [`Column`]: struct.Column.html pub fn new() -> Self { Column { spacing: 0, padding: 0, width: Length::Fill, height: Length::Shrink, max_width: u32::MAX, max_height: u32::MAX, align_items: Align::Start, children: Vec::new(), } } /// Sets the vertical spacing _between_ elements. /// /// Custom margins per element do not exist in Iced. You should use this /// method instead! While less flexible, it helps you keep spacing between /// elements consistent. pub fn spacing(mut self, units: u16) -> Self { self.spacing = units; self } /// Sets the padding of the [`Column`]. /// /// [`Column`]: struct.Column.html pub fn padding(mut self, units: u16) -> Self { self.padding = units; self } /// Sets the width of the [`Column`]. /// /// [`Column`]: struct.Column.html pub fn width(mut self, width: Length) -> Self { self.width = width; self } /// Sets the height of the [`Column`]. /// /// [`Column`]: struct.Column.html pub fn height(mut self, height: Length) -> Self { self.height = height; self } /// Sets the maximum width of the [`Column`]. /// /// [`Column`]: struct.Column.html pub fn max_width(mut self, max_width: u32) -> Self { self.max_width = max_width; self } /// Sets the maximum height of the [`Column`] in pixels. /// /// [`Column`]: struct.Column.html pub fn max_height(mut self, max_height: u32) -> Self { self.max_height = max_height; self } /// Sets the horizontal alignment of the contents of the [`Column`] . /// /// [`Column`]: struct.Column.html pub fn align_items(mut self, align: Align) -> Self { self.align_items = align; self } /// Adds an element to the [`Column`]. /// /// [`Column`]: struct.Column.html pub fn push(mut self, child: E) -> Self where E: Into>, { self.children.push(child.into()); self } } impl<'a, Message> Widget for Column<'a, Message> { fn node<'b>( &self, bump: &'b bumpalo::Bump, publish: &Bus, ) -> dodrio::Node<'b> { use dodrio::builder::*; let children: Vec<_> = self .children .iter() .map(|element| element.widget.node(bump, publish)) .collect(); // TODO: Complete styling div(bump) .attr("style", "display: flex; flex-direction: column") .children(children) .finish() } } impl<'a, Message> From> for Element<'a, Message> where Message: 'static, { fn from(column: Column<'a, Message>) -> Element<'a, Message> { Element::new(column) } }