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This commit is contained in:
Nathan Sobo 2023-11-13 21:40:02 -07:00
parent 872b5186e2
commit 044d9679ab
7 changed files with 548 additions and 153 deletions
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4
crates/editor2/src/element.rs
View file

@ -616,7 +616,7 @@ impl EditorElement {
let line_end_overshoot = 0.15 * layout.position_map.line_height;
let whitespace_setting = editor.buffer.read(cx).settings_at(0, cx).show_whitespaces;
cx.with_content_mask(ContentMask { bounds }, |cx| {
cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
// todo!("cursor region")
// cx.scene().push_cursor_region(CursorRegion {
// bounds,
@ -2659,7 +2659,7 @@ impl Element<Editor> for EditorElement {
// We call with_z_index to establish a new stacking context.
cx.with_z_index(0, |cx| {
cx.with_content_mask(ContentMask { bounds }, |cx| {
cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
self.paint_mouse_listeners(
bounds,
gutter_bounds,

2
crates/gpui2/src/element.rs
View file

@ -255,7 +255,7 @@ where
// Ignore the element offset when drawing this element, as the origin is already specified
// in absolute terms.
origin -= cx.element_offset();
cx.with_element_offset(Some(origin), |cx| self.paint(view_state, cx))
cx.with_element_offset(origin, |cx| self.paint(view_state, cx))
}
}

6
crates/gpui2/src/elements/div.rs
View file

@ -252,7 +252,7 @@ where
cx: &mut ViewContext<V>,
) -> LayoutId {
let style = self.compute_style(Bounds::default(), element_state, cx);
style.with_text_style(cx, |cx| {
style.apply_text_style(cx, |cx| {
self.with_element_id(cx, |this, _global_id, cx| {
let layout_ids = this
.children
@ -318,10 +318,10 @@ where
);
});
cx.with_z_index(1, |cx| {
style.with_text_style(cx, |cx| {
style.apply_text_style(cx, |cx| {
style.apply_overflow(bounds, cx, |cx| {
let scroll_offset = element_state.interactive.scroll_offset();
cx.with_element_offset(scroll_offset, |cx| {
cx.with_element_offset(scroll_offset.unwrap_or_default(), |cx| {
for child in &mut this.children {
child.paint(view_state, cx);
}

552
crates/gpui2/src/elements/node.rs
View file

@ -1,10 +1,12 @@
use crate::{
point, Action, AnyDrag, AnyElement, AnyView, AppContext, BorrowWindow, Bounds, ClickEvent,
DispatchPhase, Element, FocusHandle, KeyContext, KeyDownEvent, KeyUpEvent, LayoutId,
MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, Pixels, Point, Render,
ScrollWheelEvent, SharedString, Style, StyleRefinement, Styled, View, ViewContext, Visibility,
point, px, Action, AnyDrag, AnyElement, AnyTooltip, AnyView, AppContext, BorrowAppContext,
BorrowWindow, Bounds, ClickEvent, DispatchPhase, Element, FocusHandle, KeyContext,
KeyDownEvent, KeyUpEvent, LayoutId, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent,
Pixels, Point, Render, ScrollWheelEvent, SharedString, Size, Style, StyleRefinement, Styled,
Task, View, ViewContext, Visibility,
};
use collections::HashMap;
use parking_lot::Mutex;
use refineable::Refineable;
use smallvec::SmallVec;
use std::{
@ -12,14 +14,20 @@ use std::{
marker::PhantomData,
mem,
sync::Arc,
time::Duration,
};
use taffy::style::Overflow;
const DRAG_THRESHOLD: f64 = 2.;
const TOOLTIP_DELAY: Duration = Duration::from_millis(500);
const TOOLTIP_OFFSET: Point<Pixels> = Point::new(px(10.0), px(8.0));
pub struct GroupStyle {
pub group: SharedString,
pub style: StyleRefinement,
}
pub trait InteractiveComponent<V: 'static> {
pub trait InteractiveComponent<V: 'static>: Sized + Element<V> {
fn interactivity(&mut self) -> &mut Interactivity<V>;
fn hover(mut self, f: impl FnOnce(StyleRefinement) -> StyleRefinement) -> Self
@ -274,7 +282,7 @@ pub trait InteractiveComponent<V: 'static> {
}
}
pub trait StatefulInteractiveComponent<V: 'static>: InteractiveComponent<V> {
pub trait StatefulInteractiveComponent<V: 'static, E: Element<V>>: InteractiveComponent<V> {
fn active(mut self, f: impl FnOnce(StyleRefinement) -> StyleRefinement) -> Self
where
Self: Sized,
@ -541,6 +549,13 @@ impl<V: 'static> InteractiveComponent<V> for Node<V> {
pub struct NodeState {
child_layout_ids: SmallVec<[LayoutId; 4]>,
interactive_state: InteractiveElementState,
}
impl AsMut<InteractiveElementState> for InteractiveElementState {
fn as_mut(&mut self) -> &mut InteractiveElementState {
self
}
}
impl<V: 'static> Element<V> for Node<V> {
@ -553,7 +568,7 @@ impl<V: 'static> Element<V> for Node<V> {
fn initialize(
&mut self,
view_state: &mut V,
_: Option<Self::ElementState>,
previous_element_state: Option<Self::ElementState>,
cx: &mut ViewContext<V>,
) -> Self::ElementState {
for child in &mut self.children {
@ -561,6 +576,9 @@ impl<V: 'static> Element<V> for Node<V> {
}
NodeState {
child_layout_ids: SmallVec::new(),
interactive_state: previous_element_state
.map(|s| s.interactive_state)
.unwrap_or_default(),
}
}
@ -570,8 +588,10 @@ impl<V: 'static> Element<V> for Node<V> {
element_state: &mut Self::ElementState,
cx: &mut ViewContext<V>,
) -> crate::LayoutId {
let style = self.interactivity().compute_style(None, cx);
style.with_text_style(cx, |cx| {
let mut interactivity = mem::take(&mut self.interactivity);
let layout_id =
interactivity.layout(&mut element_state.interactive_state, cx, |style, cx| {
cx.with_text_style(style.text_style().cloned(), |cx| {
element_state.child_layout_ids = self
.children
.iter_mut()
@ -579,6 +599,9 @@ impl<V: 'static> Element<V> for Node<V> {
.collect::<SmallVec<_>>();
cx.request_layout(&style, element_state.child_layout_ids.iter().copied())
})
});
self.interactivity = interactivity;
layout_id
}
fn paint(
@ -588,27 +611,10 @@ impl<V: 'static> Element<V> for Node<V> {
element_state: &mut Self::ElementState,
cx: &mut ViewContext<V>,
) {
let style = self.interactivity.compute_style(Some(bounds), cx);
if style.visibility == Visibility::Hidden {
return;
}
if let Some(mouse_cursor) = style.mouse_cursor {
let hovered = bounds.contains_point(&cx.mouse_position());
if hovered {
cx.set_cursor_style(mouse_cursor);
}
}
if let Some(group) = self.interactivity.group.clone() {
GroupBounds::push(group, bounds, cx);
}
let z_index = style.z_index.unwrap_or(0);
let mut interactivity = mem::take(&mut self.interactivity);
let mut child_min = point(Pixels::MAX, Pixels::MAX);
let mut child_max = Point::default();
let content_size = if element_state.child_layout_ids.is_empty() {
bounds.size
} else {
@ -620,35 +626,41 @@ impl<V: 'static> Element<V> for Node<V> {
(child_max - child_min).into()
};
let mut interactivity = mem::take(&mut self.interactivity);
interactivity.paint(bounds, cx, |cx| {
interactivity.paint(
bounds,
content_size,
&mut element_state.interactive_state,
cx,
|style, scroll_offset, cx| {
if style.visibility == Visibility::Hidden {
return;
}
let z_index = style.z_index.unwrap_or(0);
cx.with_z_index(z_index, |cx| {
cx.with_z_index(0, |cx| {
style.paint(bounds, cx);
});
cx.with_z_index(1, |cx| {
style.with_text_style(cx, |cx| {
style.apply_overflow(bounds, cx, |cx| {
let scroll_offset = self.interactivity.scroll_offset;
cx.with_element_offset2(scroll_offset, |cx| {
cx.with_text_style(style.text_style().cloned(), |cx| {
cx.with_content_mask(style.overflow_mask(bounds), |cx| {
cx.with_element_offset(scroll_offset, |cx| {
for child in &mut self.children {
child.paint(view_state, cx);
}
});
})
})
});
});
});
})
})
})
},
);
self.interactivity = interactivity;
if let Some(group) = self.interactivity.group.as_ref() {
GroupBounds::pop(group, cx);
}
}
}
pub enum FocusState {
pub enum FocusStatus {
/// The current element is not focused, and does not contain or descend from the focused element.
None,
/// The current element is focused.
@ -660,56 +672,87 @@ pub enum FocusState {
}
pub struct Interactivity<V> {
pub active: bool,
pub group_active: bool,
pub hovered: bool,
pub group_hovered: bool,
pub focus: FocusState,
pub key_context: KeyContext,
pub focus_handle: Option<FocusHandle>,
pub scroll_offset: Point<Pixels>,
pub base_style: StyleRefinement,
pub focus_style: StyleRefinement,
pub focus_in_style: StyleRefinement,
pub in_focus_style: StyleRefinement,
pub hover_style: StyleRefinement,
pub group_hover_style: Option<GroupStyle>,
pub active_style: StyleRefinement,
pub group_active_style: Option<GroupStyle>,
pub drag_over_styles: SmallVec<[(TypeId, StyleRefinement); 2]>,
pub group_drag_over_styles: SmallVec<[(TypeId, GroupStyle); 2]>,
pub group: Option<SharedString>,
pub dispatch_context: KeyContext,
pub mouse_down_listeners: SmallVec<[MouseDownListener<V>; 2]>,
pub mouse_up_listeners: SmallVec<[MouseUpListener<V>; 2]>,
pub mouse_move_listeners: SmallVec<[MouseMoveListener<V>; 2]>,
pub scroll_wheel_listeners: SmallVec<[ScrollWheelListener<V>; 2]>,
pub key_down_listeners: SmallVec<[KeyDownListener<V>; 2]>,
pub key_up_listeners: SmallVec<[KeyUpListener<V>; 2]>,
pub action_listeners: SmallVec<[(TypeId, ActionListener<V>); 8]>,
pub drop_listeners: SmallVec<[(TypeId, Box<DropListener<V>>); 2]>,
pub click_listeners: SmallVec<[ClickListener<V>; 2]>,
pub drag_listener: Option<DragListener<V>>,
pub hover_listener: Option<HoverListener<V>>,
pub tooltip_builder: Option<TooltipBuilder<V>>,
active: Option<MouseDownEvent>,
group_active: bool,
hovered: bool,
group_hovered: bool,
focus_status: FocusStatus,
key_context: KeyContext,
focus_handle: Option<FocusHandle>,
scroll_offset: Point<Pixels>,
base_style: StyleRefinement,
focus_style: StyleRefinement,
focus_in_style: StyleRefinement,
in_focus_style: StyleRefinement,
hover_style: StyleRefinement,
group_hover_style: Option<GroupStyle>,
active_style: StyleRefinement,
group_active_style: Option<GroupStyle>,
drag_over_styles: SmallVec<[(TypeId, StyleRefinement); 2]>,
group_drag_over_styles: SmallVec<[(TypeId, GroupStyle); 2]>,
group: Option<SharedString>,
dispatch_context: KeyContext,
mouse_down_listeners: SmallVec<[MouseDownListener<V>; 2]>,
mouse_up_listeners: SmallVec<[MouseUpListener<V>; 2]>,
mouse_move_listeners: SmallVec<[MouseMoveListener<V>; 2]>,
scroll_wheel_listeners: SmallVec<[ScrollWheelListener<V>; 2]>,
key_down_listeners: SmallVec<[KeyDownListener<V>; 2]>,
key_up_listeners: SmallVec<[KeyUpListener<V>; 2]>,
action_listeners: SmallVec<[(TypeId, ActionListener<V>); 8]>,
drop_listeners: SmallVec<[(TypeId, Box<DropListener<V>>); 2]>,
click_listeners: SmallVec<[ClickListener<V>; 2]>,
drag_listener: Option<DragListener<V>>,
hover_listener: Option<HoverListener<V>>,
tooltip_builder: Option<TooltipBuilder<V>>,
}
impl<V: 'static> Interactivity<V> {
#[derive(Default)]
pub struct InteractiveElementState {
clicked_state: Arc<Mutex<ElementClickedState>>,
hover_state: Arc<Mutex<bool>>,
pending_mouse_down: Arc<Mutex<Option<MouseDownEvent>>>,
scroll_offset: Option<Arc<Mutex<Point<Pixels>>>>,
active_tooltip: Arc<Mutex<Option<ActiveTooltip>>>,
}
struct ActiveTooltip {
#[allow(unused)] // used to drop the task
waiting: Option<Task<()>>,
tooltip: Option<AnyTooltip>,
}
/// Whether or not the element or a group that contains it is clicked by the mouse.
#[derive(Copy, Clone, Default, Eq, PartialEq)]
struct ElementClickedState {
pub group: bool,
pub element: bool,
}
impl ElementClickedState {
fn is_clicked(&self) -> bool {
self.group || self.element
}
}
impl<V> Interactivity<V>
where
V: 'static,
{
fn compute_style(&self, bounds: Option<Bounds<Pixels>>, cx: &mut ViewContext<V>) -> Style {
let mut style = Style::default();
style.refine(&self.base_style);
match self.focus {
FocusState::None => {}
FocusState::Focus => {
match self.focus_status {
FocusStatus::None => {}
FocusStatus::Focus => {
style.refine(&self.focus_style);
style.refine(&self.focus_in_style);
style.refine(&self.in_focus_style);
}
FocusState::FocusIn => {
FocusStatus::FocusIn => {
style.refine(&self.focus_in_style);
}
FocusState::InFocus => {
FocusStatus::InFocus => {
style.refine(&self.in_focus_style);
}
}
@ -756,19 +799,66 @@ impl<V: 'static> Interactivity<V> {
}
}
if self.active {
if self.active.is_some() {
style.refine(&self.active_style)
}
style
}
fn layout(
&mut self,
element_state: &mut InteractiveElementState,
cx: &mut ViewContext<V>,
f: impl FnOnce(Style, &mut ViewContext<V>) -> LayoutId,
) -> LayoutId {
let mut style = Style::default();
style.refine(&self.base_style);
if let Some(focus_handle) = self.focus_handle.as_ref() {
if focus_handle.contains_focused(cx) {
style.refine(&self.focus_in_style);
}
if focus_handle.within_focused(cx) {
style.refine(&self.in_focus_style);
}
if focus_handle.is_focused(cx) {
style.refine(&self.focus_style);
}
}
let clicked_state = element_state.clicked_state.lock();
if clicked_state.group {
if let Some(group_style) = self.group_active_style.as_ref() {
style.refine(&group_style.style);
}
}
if clicked_state.element {
style.refine(&self.active_style);
}
f(style, cx)
}
fn paint(
&mut self,
bounds: Bounds<Pixels>,
content_size: Size<Pixels>,
element_state: &mut InteractiveElementState,
cx: &mut ViewContext<V>,
f: impl FnOnce(&mut ViewContext<V>),
f: impl FnOnce(Style, Point<Pixels>, &mut ViewContext<V>),
) {
let style = self.compute_style(Some(bounds), cx);
if let Some(mouse_cursor) = style.mouse_cursor {
let hovered = bounds.contains_point(&cx.mouse_position());
if hovered {
cx.set_cursor_style(mouse_cursor);
}
}
for listener in self.mouse_down_listeners.drain(..) {
cx.on_mouse_event(move |state, event: &MouseDownEvent, phase, cx| {
listener(state, event, &bounds, phase, cx);
@ -845,22 +935,212 @@ impl<V: 'static> Interactivity<V> {
});
}
let mut element_state: &mut InteractiveElementState = element_state.as_mut();
let click_listeners = mem::take(&mut self.click_listeners);
let drag_listener = mem::take(&mut self.drag_listener);
if !click_listeners.is_empty() || drag_listener.is_some() {
let pending_mouse_down = element_state.pending_mouse_down.clone();
let mouse_down = pending_mouse_down.lock().clone();
if let Some(mouse_down) = mouse_down {
if let Some(drag_listener) = drag_listener {
let active_state = element_state.clicked_state.clone();
cx.on_mouse_event(move |view_state, event: &MouseMoveEvent, phase, cx| {
if cx.active_drag.is_some() {
if phase == DispatchPhase::Capture {
cx.notify();
}
} else if phase == DispatchPhase::Bubble
&& bounds.contains_point(&event.position)
&& (event.position - mouse_down.position).magnitude() > DRAG_THRESHOLD
{
*active_state.lock() = ElementClickedState::default();
let cursor_offset = event.position - bounds.origin;
let drag = drag_listener(view_state, cursor_offset, cx);
cx.active_drag = Some(drag);
cx.notify();
cx.stop_propagation();
}
});
}
cx.on_mouse_event(move |view_state, event: &MouseUpEvent, phase, cx| {
if phase == DispatchPhase::Bubble && bounds.contains_point(&event.position) {
let mouse_click = ClickEvent {
down: mouse_down.clone(),
up: event.clone(),
};
for listener in &click_listeners {
listener(view_state, &mouse_click, cx);
}
}
*pending_mouse_down.lock() = None;
});
} else {
cx.on_mouse_event(move |_state, event: &MouseDownEvent, phase, _cx| {
if phase == DispatchPhase::Bubble && bounds.contains_point(&event.position) {
*pending_mouse_down.lock() = Some(event.clone());
}
});
}
}
if let Some(hover_listener) = self.hover_listener.take() {
let was_hovered = element_state.hover_state.clone();
let has_mouse_down = element_state.pending_mouse_down.clone();
cx.on_mouse_event(move |view_state, event: &MouseMoveEvent, phase, cx| {
if phase != DispatchPhase::Bubble {
return;
}
let is_hovered =
bounds.contains_point(&event.position) && has_mouse_down.lock().is_none();
let mut was_hovered = was_hovered.lock();
if is_hovered != was_hovered.clone() {
*was_hovered = is_hovered;
drop(was_hovered);
hover_listener(view_state, is_hovered, cx);
}
});
}
if let Some(tooltip_builder) = self.tooltip_builder.take() {
let active_tooltip = element_state.active_tooltip.clone();
let pending_mouse_down = element_state.pending_mouse_down.clone();
cx.on_mouse_event(move |_, event: &MouseMoveEvent, phase, cx| {
if phase != DispatchPhase::Bubble {
return;
}
let is_hovered =
bounds.contains_point(&event.position) && pending_mouse_down.lock().is_none();
if !is_hovered {
active_tooltip.lock().take();
return;
}
if active_tooltip.lock().is_none() {
let task = cx.spawn({
let active_tooltip = active_tooltip.clone();
let tooltip_builder = tooltip_builder.clone();
move |view, mut cx| async move {
cx.background_executor().timer(TOOLTIP_DELAY).await;
view.update(&mut cx, move |view_state, cx| {
active_tooltip.lock().replace(ActiveTooltip {
waiting: None,
tooltip: Some(AnyTooltip {
view: tooltip_builder(view_state, cx),
cursor_offset: cx.mouse_position() + TOOLTIP_OFFSET,
}),
});
cx.notify();
})
.ok();
}
});
active_tooltip.lock().replace(ActiveTooltip {
waiting: Some(task),
tooltip: None,
});
}
});
if let Some(active_tooltip) = element_state.active_tooltip.lock().as_ref() {
if active_tooltip.tooltip.is_some() {
cx.active_tooltip = active_tooltip.tooltip.clone()
}
}
}
let active_state = element_state.clicked_state.clone();
if !active_state.lock().is_clicked() {
cx.on_mouse_event(move |_, _: &MouseUpEvent, phase, cx| {
if phase == DispatchPhase::Capture {
*active_state.lock() = ElementClickedState::default();
cx.notify();
}
});
} else {
let active_group_bounds = self
.group_active_style
.as_ref()
.and_then(|group_active| GroupBounds::get(&group_active.group, cx));
cx.on_mouse_event(move |_view, down: &MouseDownEvent, phase, cx| {
if phase == DispatchPhase::Bubble {
let group = active_group_bounds
.map_or(false, |bounds| bounds.contains_point(&down.position));
let element = bounds.contains_point(&down.position);
if group || element {
*active_state.lock() = ElementClickedState { group, element };
cx.notify();
}
}
});
}
let overflow = style.overflow;
if overflow.x == Overflow::Scroll || overflow.y == Overflow::Scroll {
let scroll_offset = element_state
.scroll_offset
.get_or_insert_with(Arc::default)
.clone();
let line_height = cx.line_height();
let scroll_max = (content_size - bounds.size).max(&Size::default());
cx.on_mouse_event(move |_, event: &ScrollWheelEvent, phase, cx| {
if phase == DispatchPhase::Bubble && bounds.contains_point(&event.position) {
let mut scroll_offset = scroll_offset.lock();
let old_scroll_offset = *scroll_offset;
let delta = event.delta.pixel_delta(line_height);
if overflow.x == Overflow::Scroll {
scroll_offset.x =
(scroll_offset.x + delta.x).clamp(-scroll_max.width, px(0.));
}
if overflow.y == Overflow::Scroll {
scroll_offset.y =
(scroll_offset.y + delta.y).clamp(-scroll_max.height, px(0.));
}
if *scroll_offset != old_scroll_offset {
cx.notify();
cx.stop_propagation();
}
}
});
}
if let Some(group) = self.group.clone() {
GroupBounds::push(group, bounds, cx);
}
cx.with_key_dispatch(
self.key_context.clone(),
self.focus_handle.clone(),
|_, cx| f(cx),
|_, cx| f(style, self.scroll_offset, cx),
);
if let Some(group) = self.group.as_ref() {
GroupBounds::pop(group, cx);
}
}
}
impl<V: 'static> Default for Interactivity<V> {
fn default() -> Self {
Self {
active: false,
active: None,
group_active: false,
hovered: false,
group_hovered: false,
focus: FocusState::None,
focus_status: FocusStatus::None,
key_context: KeyContext::default(),
focus_handle: None,
scroll_offset: Point::default(),
@ -937,26 +1217,80 @@ impl<V, E> FocusableComponent<V> for Focusable<V, E> {
}
}
impl<V: 'static, E: InteractiveComponent<V>> InteractiveComponent<V> for Focusable<V, E> {
impl<V, E> InteractiveComponent<V> for Focusable<V, E>
where
V: 'static,
E: InteractiveComponent<V>,
{
fn interactivity(&mut self) -> &mut Interactivity<V> {
self.element.interactivity()
}
}
impl<V: 'static, E: StatefulInteractiveComponent<V>> StatefulInteractiveComponent<V>
impl<V: 'static, E: StatefulInteractiveComponent<V, E>> StatefulInteractiveComponent<V, E>
for Focusable<V, E>
{
}
impl<V, E> Element<V> for Focusable<V, E>
where
V: 'static,
E: Element<V>,
{
type ElementState = E::ElementState;
fn id(&self) -> Option<crate::ElementId> {
todo!()
}
fn initialize(
&mut self,
view_state: &mut V,
element_state: Option<Self::ElementState>,
cx: &mut ViewContext<V>,
) -> Self::ElementState {
todo!()
}
fn layout(
&mut self,
view_state: &mut V,
element_state: &mut Self::ElementState,
cx: &mut ViewContext<V>,
) -> LayoutId {
todo!()
}
fn paint(
&mut self,
bounds: Bounds<Pixels>,
view_state: &mut V,
element_state: &mut Self::ElementState,
cx: &mut ViewContext<V>,
) {
todo!()
}
}
pub struct Stateful<V, E> {
id: SharedString,
view_type: PhantomData<V>,
element: E,
}
impl<V: 'static, E: InteractiveComponent<V>> StatefulInteractiveComponent<V> for Stateful<V, E> {}
impl<V, E> StatefulInteractiveComponent<V, E> for Stateful<V, E>
where
V: 'static,
E: Element<V>,
Self: InteractiveComponent<V>,
{
}
impl<V: 'static, E: InteractiveComponent<V>> InteractiveComponent<V> for Stateful<V, E> {
impl<V, E> InteractiveComponent<V> for Stateful<V, E>
where
V: 'static,
E: InteractiveComponent<V>,
{
fn interactivity(&mut self) -> &mut Interactivity<V> {
self.element.interactivity()
}
@ -967,3 +1301,43 @@ impl<V, E: FocusableComponent<V>> FocusableComponent<V> for Stateful<V, E> {
self.element.focusability()
}
}
impl<V, E> Element<V> for Stateful<V, E>
where
V: 'static,
E: Element<V>,
{
type ElementState = InteractiveElementState;
fn id(&self) -> Option<crate::ElementId> {
todo!()
}
fn initialize(
&mut self,
view_state: &mut V,
element_state: Option<Self::ElementState>,
cx: &mut ViewContext<V>,
) -> Self::ElementState {
todo!()
}
fn layout(
&mut self,
view_state: &mut V,
element_state: &mut Self::ElementState,
cx: &mut ViewContext<V>,
) -> LayoutId {
todo!()
}
fn paint(
&mut self,
bounds: Bounds<Pixels>,
view_state: &mut V,
element_state: &mut Self::ElementState,
cx: &mut ViewContext<V>,
) {
todo!()
}
}

8
crates/gpui2/src/gpui2.rs
View file

@ -148,7 +148,7 @@ pub enum GlobalKey {
}
pub trait BorrowAppContext {
fn with_text_style<F, R>(&mut self, style: TextStyleRefinement, f: F) -> R
fn with_text_style<F, R>(&mut self, style: Option<TextStyleRefinement>, f: F) -> R
where
F: FnOnce(&mut Self) -> R;
@ -159,14 +159,18 @@ impl<C> BorrowAppContext for C
where
C: BorrowMut<AppContext>,
{
fn with_text_style<F, R>(&mut self, style: TextStyleRefinement, f: F) -> R
fn with_text_style<F, R>(&mut self, style: Option<TextStyleRefinement>, f: F) -> R
where
F: FnOnce(&mut Self) -> R,
{
if let Some(style) = style {
self.borrow_mut().push_text_style(style);
let result = f(self);
self.borrow_mut().pop_text_style();
result
} else {
f(self)
}
}
fn set_global<G: 'static>(&mut self, global: G) {

44
crates/gpui2/src/style.rs
View file

@ -2,7 +2,7 @@ use crate::{
black, phi, point, rems, AbsoluteLength, BorrowAppContext, BorrowWindow, Bounds, ContentMask,
Corners, CornersRefinement, CursorStyle, DefiniteLength, Edges, EdgesRefinement, Font,
FontFeatures, FontStyle, FontWeight, Hsla, Length, Pixels, Point, PointRefinement, Result,
Rgba, SharedString, Size, SizeRefinement, Styled, TextRun, ViewContext, WindowContext,
Rgba, SharedString, Size, SizeRefinement, Styled, TextRun, ViewContext,
};
use refineable::{Cascade, Refineable};
use smallvec::SmallVec;
@ -220,7 +220,7 @@ pub struct HighlightStyle {
impl Eq for HighlightStyle {}
impl Style {
pub fn text_style(&self, _cx: &WindowContext) -> Option<&TextStyleRefinement> {
pub fn text_style(&self) -> Option<&TextStyleRefinement> {
if self.text.is_some() {
Some(&self.text)
} else {
@ -228,13 +228,47 @@ impl Style {
}
}
pub fn with_text_style<C, F, R>(&self, cx: &mut C, f: F) -> R
pub fn overflow_mask(&self, bounds: Bounds<Pixels>) -> Option<ContentMask<Pixels>> {
match self.overflow {
Point {
x: Overflow::Visible,
y: Overflow::Visible,
} => None,
_ => {
let current_mask = bounds;
let min = current_mask.origin;
let max = current_mask.lower_right();
let bounds = match (
self.overflow.x == Overflow::Visible,
self.overflow.y == Overflow::Visible,
) {
// x and y both visible
(true, true) => return None,
// x visible, y hidden
(true, false) => Bounds::from_corners(
point(min.x, bounds.origin.y),
point(max.x, bounds.lower_right().y),
),
// x hidden, y visible
(false, true) => Bounds::from_corners(
point(bounds.origin.x, min.y),
point(bounds.lower_right().x, max.y),
),
// both hidden
(false, false) => bounds,
};
Some(ContentMask { bounds })
}
}
}
pub fn apply_text_style<C, F, R>(&self, cx: &mut C, f: F) -> R
where
C: BorrowAppContext,
F: FnOnce(&mut C) -> R,
{
if self.text.is_some() {
cx.with_text_style(self.text.clone(), f)
cx.with_text_style(Some(self.text.clone()), f)
} else {
f(cx)
}
@ -274,7 +308,7 @@ impl Style {
bounds: mask_bounds,
};
cx.with_content_mask(mask, f)
cx.with_content_mask(Some(mask), f)
}
/// Paints the background of an element styled with this style.

31
crates/gpui2/src/window.rs
View file

@ -1067,7 +1067,7 @@ impl<'a> WindowContext<'a> {
if let Some(active_drag) = self.app.active_drag.take() {
self.with_z_index(1, |cx| {
let offset = cx.mouse_position() - active_drag.cursor_offset;
cx.with_element_offset(Some(offset), |cx| {
cx.with_element_offset(offset, |cx| {
let available_space =
size(AvailableSpace::MinContent, AvailableSpace::MinContent);
active_drag.view.draw(available_space, cx);
@ -1076,7 +1076,7 @@ impl<'a> WindowContext<'a> {
});
} else if let Some(active_tooltip) = self.app.active_tooltip.take() {
self.with_z_index(1, |cx| {
cx.with_element_offset(Some(active_tooltip.cursor_offset), |cx| {
cx.with_element_offset(active_tooltip.cursor_offset, |cx| {
let available_space =
size(AvailableSpace::MinContent, AvailableSpace::MinContent);
active_tooltip.view.draw(available_space, cx);
@ -1553,9 +1553,10 @@ pub trait BorrowWindow: BorrowMut<Window> + BorrowMut<AppContext> {
/// with the current mask.
fn with_content_mask<R>(
&mut self,
mask: ContentMask<Pixels>,
mask: Option<ContentMask<Pixels>>,
f: impl FnOnce(&mut Self) -> R,
) -> R {
if let Some(mask) = mask {
let mask = mask.intersect(&self.content_mask());
self.window_mut()
.current_frame
@ -1564,32 +1565,14 @@ pub trait BorrowWindow: BorrowMut<Window> + BorrowMut<AppContext> {
let result = f(self);
self.window_mut().current_frame.content_mask_stack.pop();
result
} else {
f(self)
}
}
/// Update the global element offset based on the given offset. This is used to implement
/// scrolling and position drag handles.
fn with_element_offset<R>(
&mut self,
offset: Option<Point<Pixels>>,
f: impl FnOnce(&mut Self) -> R,
) -> R {
let Some(offset) = offset else {
return f(self);
};
let offset = self.element_offset() + offset;
self.window_mut()
.current_frame
.element_offset_stack
.push(offset);
let result = f(self);
self.window_mut().current_frame.element_offset_stack.pop();
result
}
/// Update the global element offset based on the given offset. This is used to implement
/// scrolling and position drag handles.
fn with_element_offset2<R>(
&mut self,
offset: Point<Pixels>,
f: impl FnOnce(&mut Self) -> R,