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This commit is contained in:
Antonio Scandurra 2023-11-15 20:41:09 +01:00
parent 759ce7440c
commit 33a808a49b
8 changed files with 96 additions and 232 deletions
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87
crates/gpui2/src/view.rs
View file

@ -1,7 +1,7 @@
use crate::{
private::Sealed, AnyBox, AnyElement, AnyModel, AnyWeakModel, AppContext, AvailableSpace,
Bounds, Component, Element, ElementId, Entity, EntityId, Flatten, LayoutId, Model, Pixels,
Size, ViewContext, VisualContext, WeakModel, WindowContext,
BorrowWindow, Bounds, Component, Element, ElementId, Entity, EntityId, Flatten, LayoutId,
Model, Pixels, Point, Size, ViewContext, VisualContext, WeakModel, WindowContext,
};
use anyhow::{Context, Result};
use std::{
@ -155,8 +155,7 @@ impl<V> Eq for WeakView<V> {}
#[derive(Clone, Debug)]
pub struct AnyView {
model: AnyModel,
initialize: fn(&AnyView, &mut WindowContext) -> AnyBox,
layout: fn(&AnyView, &mut AnyBox, &mut WindowContext) -> LayoutId,
layout: fn(&AnyView, &mut WindowContext) -> (LayoutId, Box<dyn Any>),
paint: fn(&AnyView, &mut AnyBox, &mut WindowContext),
}
@ -164,7 +163,6 @@ impl AnyView {
pub fn downgrade(&self) -> AnyWeakView {
AnyWeakView {
model: self.model.downgrade(),
initialize: self.initialize,
layout: self.layout,
paint: self.paint,
}
@ -175,7 +173,6 @@ impl AnyView {
Ok(model) => Ok(View { model }),
Err(model) => Err(Self {
model,
initialize: self.initialize,
layout: self.layout,
paint: self.paint,
}),
@ -186,13 +183,19 @@ impl AnyView {
self.model.entity_type
}
pub(crate) fn draw(&self, available_space: Size<AvailableSpace>, cx: &mut WindowContext) {
let mut rendered_element = (self.initialize)(self, cx);
let layout_id = (self.layout)(self, &mut rendered_element, cx);
cx.window
.layout_engine
.compute_layout(layout_id, available_space);
(self.paint)(self, &mut rendered_element, cx);
pub(crate) fn draw(
&self,
origin: Point<Pixels>,
available_space: Size<AvailableSpace>,
cx: &mut WindowContext,
) {
cx.with_absolute_element_offset(origin, |cx| {
let (layout_id, mut rendered_element) = (self.layout)(self, cx);
cx.window
.layout_engine
.compute_layout(layout_id, available_space);
(self.paint)(self, &mut rendered_element, cx);
})
}
}
@ -206,7 +209,6 @@ impl<V: Render> From<View<V>> for AnyView {
fn from(value: View<V>) -> Self {
AnyView {
model: value.model.into_any(),
initialize: any_view::initialize::<V>,
layout: any_view::layout::<V>,
paint: any_view::paint::<V>,
}
@ -220,21 +222,12 @@ impl<ParentViewState: 'static> Element<ParentViewState> for AnyView {
Some(self.model.entity_id.into())
}
fn initialize(
&mut self,
_view_state: &mut ParentViewState,
_element_state: Option<Self::ElementState>,
cx: &mut ViewContext<ParentViewState>,
) -> Self::ElementState {
(self.initialize)(self, cx)
}
fn layout(
&mut self,
_view_state: &mut ParentViewState,
rendered_element: &mut Self::ElementState,
rendered_element: Option<Self::ElementState>,
cx: &mut ViewContext<ParentViewState>,
) -> LayoutId {
) -> (LayoutId, Self::ElementState) {
(self.layout)(self, rendered_element, cx)
}
@ -251,8 +244,7 @@ impl<ParentViewState: 'static> Element<ParentViewState> for AnyView {
pub struct AnyWeakView {
model: AnyWeakModel,
initialize: fn(&AnyView, &mut WindowContext) -> AnyBox,
layout: fn(&AnyView, &mut AnyBox, &mut WindowContext) -> LayoutId,
layout: fn(&AnyView, &mut WindowContext) -> (LayoutId, Box<dyn Any>),
paint: fn(&AnyView, &mut AnyBox, &mut WindowContext),
}
@ -261,7 +253,6 @@ impl AnyWeakView {
let model = self.model.upgrade()?;
Some(AnyView {
model,
initialize: self.initialize,
layout: self.layout,
paint: self.paint,
})
@ -272,7 +263,6 @@ impl<V: Render> From<WeakView<V>> for AnyWeakView {
fn from(view: WeakView<V>) -> Self {
Self {
model: view.model.into(),
initialize: any_view::initialize::<V>,
layout: any_view::layout::<V>,
paint: any_view::paint::<V>,
}
@ -319,28 +309,19 @@ where
Some(self.view.entity_id().into())
}
fn initialize(
fn layout(
&mut self,
_: &mut ParentViewState,
_: Option<Self::ElementState>,
cx: &mut ViewContext<ParentViewState>,
) -> Self::ElementState {
) -> (LayoutId, Self::ElementState) {
self.view.update(cx, |view, cx| {
let mut element = self.component.take().unwrap().render();
element.initialize(view, cx);
element
let layout_id = element.layout(view, cx);
(layout_id, element)
})
}
fn layout(
&mut self,
_: &mut ParentViewState,
element: &mut Self::ElementState,
cx: &mut ViewContext<ParentViewState>,
) -> LayoutId {
self.view.update(cx, |view, cx| element.layout(view, cx))
}
fn paint(
&mut self,
_: Bounds<Pixels>,
@ -356,27 +337,17 @@ mod any_view {
use crate::{AnyElement, AnyView, BorrowWindow, LayoutId, Render, WindowContext};
use std::any::Any;
pub(crate) fn initialize<V: Render>(view: &AnyView, cx: &mut WindowContext) -> Box<dyn Any> {
cx.with_element_id(Some(view.model.entity_id), |cx| {
let view = view.clone().downcast::<V>().unwrap();
let element = view.update(cx, |view, cx| {
let mut element = AnyElement::new(view.render(cx));
element.initialize(view, cx);
element
});
Box::new(element)
})
}
pub(crate) fn layout<V: Render>(
view: &AnyView,
element: &mut Box<dyn Any>,
cx: &mut WindowContext,
) -> LayoutId {
) -> (LayoutId, Box<dyn Any>) {
cx.with_element_id(Some(view.model.entity_id), |cx| {
let view = view.clone().downcast::<V>().unwrap();
let element = element.downcast_mut::<AnyElement<V>>().unwrap();
view.update(cx, |view, cx| element.layout(view, cx))
view.update(cx, |view, cx| {
let mut element = AnyElement::new(view.render(cx));
let layout_id = element.layout(view, cx);
(layout_id, Box::new(element) as Box<dyn Any>)
})
})
}