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Draft custom layout engine based on druid

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This commit is contained in:
Héctor Ramón Jiménez 2019-11-10 06:05:20 +01:00
parent 2303111e09
commit 0240c3981b
38 changed files with 974 additions and 249 deletions
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18
native/src/widget/text.rs
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@ -1,5 +1,5 @@
//! Write some text for your users to read.
use crate::{layout, Element, Hasher, Layout, Point, Widget};
use crate::{layout, Element, Hasher, Layout, Length, Point, Widget};
use std::hash::Hash;
@ -9,14 +9,22 @@ impl<Message, Renderer> Widget<Message, Renderer> for Text
where
Renderer: self::Renderer,
{
fn layout(&self, renderer: &Renderer, limits: &layout::Limits) -> Layout {
fn width(&self) -> Length {
self.width
}
fn layout(
&self,
renderer: &Renderer,
limits: &layout::Limits,
) -> layout::Node {
renderer.layout(&self, limits)
}
fn draw(
&self,
renderer: &mut Renderer,
layout: &Layout,
layout: Layout<'_>,
_cursor_position: Point,
) -> Renderer::Output {
renderer.draw(&self, layout)
@ -49,7 +57,7 @@ pub trait Renderer: crate::Renderer {
/// [`Style`]: ../../struct.Style.html
/// [`Text`]: struct.Text.html
/// [`Node::with_measure`]: ../../struct.Node.html#method.with_measure
fn layout(&self, text: &Text, limits: &layout::Limits) -> Layout;
fn layout(&self, text: &Text, limits: &layout::Limits) -> layout::Node;
/// Draws a [`Text`] fragment.
///
@ -64,7 +72,7 @@ pub trait Renderer: crate::Renderer {
/// [`Text`]: struct.Text.html
/// [`HorizontalAlignment`]: enum.HorizontalAlignment.html
/// [`VerticalAlignment`]: enum.VerticalAlignment.html
fn draw(&mut self, text: &Text, layout: &Layout) -> Self::Output;
fn draw(&mut self, text: &Text, layout: Layout<'_>) -> Self::Output;
}
impl<'a, Message, Renderer> From<Text> for Element<'a, Message, Renderer>