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WIP: cascade split resizes

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Mikayla Maki 2023-07-23 01:00:52 -07:00
parent b4b53eb5f1
commit 28ee05b324
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1 changed files with 98 additions and 78 deletions
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176
crates/workspace/src/pane_group.rs
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@ -587,14 +587,16 @@ mod element {
use std::{cell::RefCell, ops::Range, rc::Rc};
use gpui::{
elements::MouseEventHandler,
geometry::{
rect::RectF,
vector::{vec2f, Vector2F},
},
json::{self, ToJson},
platform::{CursorStyle, MouseButton},
AnyElement, Axis, CursorRegion, Element, LayoutContext, MouseRegion, RectFExt,
SceneBuilder, SizeConstraint, Vector2FExt, ViewContext,
scene::MouseDrag,
AnyElement, Axis, CursorRegion, Element, EventContext, LayoutContext, MouseRegion,
RectFExt, SceneBuilder, SizeConstraint, Vector2FExt, ViewContext,
};
use crate::{
@ -682,6 +684,90 @@ mod element {
*cross_axis_max = cross_axis_max.max(child_size.along(cross_axis));
}
}
fn handle_resize(
flexes: Rc<RefCell<Vec<f32>>>,
axis: Axis,
ix: usize,
child_start: Vector2F,
drag_bounds: RectF,
) -> impl Fn(MouseDrag, &mut Workspace, &mut EventContext<Workspace>) {
let size = move |ix, flexes: &[f32]| {
drag_bounds.length_along(axis) * (flexes[ix] / flexes.len() as f32)
};
move |drag, workspace: &mut Workspace, cx| {
let min_size = match axis {
Axis::Horizontal => HORIZONTAL_MIN_SIZE,
Axis::Vertical => VERTICAL_MIN_SIZE,
};
let mut flexes = flexes.borrow_mut();
// Don't allow resizing to less than the minimum size, if elements are already too small
if min_size - 1. > size(ix, flexes.as_slice()) {
return;
}
let mut current_target_size = (drag.position - child_start).along(axis);
let mut proposed_current_pixel_change =
current_target_size - size(ix, flexes.as_slice());
let flex_changes = |pixel_dx, target_ix, flexes: &[f32]| {
let flex_change = pixel_dx / drag_bounds.length_along(axis);
let current_target_flex = flexes[target_ix] + flex_change;
let next_target_flex = flexes[target_ix + 1] - flex_change;
(current_target_flex, next_target_flex)
};
if proposed_current_pixel_change < 0. {
current_target_size = f32::max(current_target_size, min_size);
let current_pixel_change = current_target_size - size(ix, flexes.as_slice());
let (current_target_flex, next_target_flex) =
flex_changes(current_pixel_change, ix, flexes.as_slice());
flexes[ix] = current_target_flex;
flexes[ix + 1] = next_target_flex;
} else if proposed_current_pixel_change > 0. {
let mut ix_offset = 0;
while proposed_current_pixel_change > 0.01 && ix + 1 + ix_offset < flexes.len()
{
let next_target_size = f32::max(
size(ix + 1, flexes.as_slice()) - proposed_current_pixel_change,
min_size,
);
current_target_size = f32::min(
current_target_size,
size(ix, flexes.as_slice()) + size(ix + 1, flexes.as_slice())
- next_target_size,
);
let current_pixel_change =
current_target_size - size(ix, flexes.as_slice());
let (current_target_flex, next_target_flex) =
flex_changes(current_pixel_change, ix, flexes.as_slice());
flexes[ix_offset + ix] = current_target_flex;
flexes[ix_offset + ix + 1] = next_target_flex;
dbg!(
current_pixel_change,
proposed_current_pixel_change,
proposed_current_pixel_change - current_pixel_change
);
proposed_current_pixel_change -= current_pixel_change;
ix_offset += 1;
}
dbg!("done");
}
workspace.schedule_serialize(cx);
cx.notify();
}
}
}
impl Extend<AnyElement<Workspace>> for PaneAxisElement {
@ -780,11 +866,6 @@ mod element {
let mut bounding_boxes = self.bounding_boxes.borrow_mut();
bounding_boxes.clear();
let sizes = self
.children
.iter()
.map(|child| child.size())
.collect::<Vec<_>>();
let mut children_iter = self.children.iter_mut().enumerate().peekable();
while let Some((ix, child)) = children_iter.next() {
let child_start = child_origin.clone();
@ -826,8 +907,6 @@ mod element {
style,
});
let axis = self.axis;
let drag_bounds = visible_bounds.clone();
enum ResizeHandle {}
let mut mouse_region = MouseRegion::new::<ResizeHandle>(
cx.view_id(),
@ -835,75 +914,16 @@ mod element {
handle_bounds,
);
mouse_region = mouse_region
.on_drag(MouseButton::Left, {
let flexes = self.flexes.clone();
let sizes = sizes.clone();
move |drag, workspace: &mut Workspace, cx| {
let min_size = match axis {
Axis::Horizontal => HORIZONTAL_MIN_SIZE,
Axis::Vertical => VERTICAL_MIN_SIZE,
};
// Don't allow resizing to less than the minimum size, if elements are already too small
if min_size - 1. > sizes[ix].along(axis) {
return;
}
let mut flexes = flexes.borrow_mut();
let mut current_target_size =
(drag.position - child_start).along(axis);
let mut proposed_current_pixel_change =
current_target_size - sizes[ix].along(axis);
let flex_changes = |target_size, target_ix| {
let current_pixel_change = target_size - sizes[ix].along(axis);
let flex_change =
current_pixel_change / drag_bounds.length_along(axis);
let current_target_flex = flexes[target_ix] + flex_change;
let next_target_flex = flexes[target_ix + 1] - flex_change;
(current_target_flex, next_target_flex)
};
if proposed_current_pixel_change < 0. {
current_target_size = f32::max(current_target_size, min_size);
let (current_target_flex, next_target_flex) =
flex_changes(current_target_size, ix);
*flexes.get_mut(ix).unwrap() = current_target_flex;
*flexes.get_mut(ix + 1).unwrap() = next_target_flex;
} else if proposed_current_pixel_change > 0. {
let mut next_target_size = f32::max(
sizes[ix + 1].along(axis) - proposed_current_pixel_change,
min_size,
);
current_target_size = f32::min(
current_target_size,
sizes[ix].along(axis) + sizes[ix + 1].along(axis)
- next_target_size,
);
let (current_target_flex, next_target_flex) =
flex_changes(current_target_size, ix);
// TODO: make this into a loop
*flexes.get_mut(ix).unwrap() = current_target_flex;
*flexes.get_mut(ix + 1).unwrap() = next_target_flex;
// let mut ix_offset = 0;
// while proposed_current_pixel_change > 0.
// && ix + 1 + ix_offset < flexes.len()
// {
// }
}
workspace.schedule_serialize(cx);
cx.notify();
}
})
.on_drag(
MouseButton::Left,
Self::handle_resize(
self.flexes.clone(),
self.axis,
ix,
child_start,
visible_bounds.clone(),
),
)
.on_click(MouseButton::Left, {
let flexes = self.flexes.clone();
move |e, v: &mut Workspace, cx| {