Max BrunsfeldandNathan Sobo
3f71867af8
* Enforce a min width per tab * Center the title within tab, regardless of icon * Render icon over the top of the tab title * Ensure there is always a fixed minimum amount of filler to the right of all tabs Co-Authored-By: Nathan Sobo <nathan@zed.dev>
105 lines
2.5 KiB
Rust
105 lines
2.5 KiB
Rust
use crate::{
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json, AfterLayoutContext, DebugContext, Element, ElementBox, Event, EventContext,
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LayoutContext, PaintContext, SizeConstraint,
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};
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use json::ToJson;
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use pathfinder_geometry::vector::Vector2F;
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use serde_json::json;
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pub struct Align {
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child: ElementBox,
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alignment: Vector2F,
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}
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impl Align {
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pub fn new(child: ElementBox) -> Self {
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Self {
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child,
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alignment: Vector2F::zero(),
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}
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}
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pub fn top(mut self) -> Self {
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self.alignment.set_y(-1.0);
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self
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}
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pub fn right(mut self) -> Self {
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self.alignment.set_x(1.0);
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self
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}
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}
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impl Element for Align {
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type LayoutState = ();
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type PaintState = ();
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fn layout(
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&mut self,
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mut constraint: SizeConstraint,
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ctx: &mut LayoutContext,
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) -> (Vector2F, Self::LayoutState) {
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let mut size = constraint.max;
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constraint.min = Vector2F::zero();
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let child_size = self.child.layout(constraint, ctx);
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if size.x().is_infinite() {
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size.set_x(child_size.x());
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}
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if size.y().is_infinite() {
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size.set_y(child_size.y());
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}
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(size, ())
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}
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fn after_layout(
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&mut self,
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_: Vector2F,
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_: &mut Self::LayoutState,
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ctx: &mut AfterLayoutContext,
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) {
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self.child.after_layout(ctx);
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}
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fn paint(
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&mut self,
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bounds: pathfinder_geometry::rect::RectF,
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_: &mut Self::LayoutState,
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ctx: &mut PaintContext,
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) -> Self::PaintState {
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let my_center = bounds.size() / 2.;
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let my_target = my_center + my_center * self.alignment;
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let child_center = self.child.size() / 2.;
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let child_target = child_center + child_center * self.alignment;
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self.child
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.paint(bounds.origin() - (child_target - my_target), ctx);
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}
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fn dispatch_event(
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&mut self,
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event: &Event,
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_: pathfinder_geometry::rect::RectF,
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_: &mut Self::LayoutState,
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_: &mut Self::PaintState,
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ctx: &mut EventContext,
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) -> bool {
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self.child.dispatch_event(event, ctx)
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}
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fn debug(
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&self,
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bounds: pathfinder_geometry::rect::RectF,
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_: &Self::LayoutState,
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_: &Self::PaintState,
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ctx: &DebugContext,
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) -> json::Value {
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json!({
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"type": "Align",
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"bounds": bounds.to_json(),
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"alignment": self.alignment.to_json(),
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"child": self.child.debug(ctx),
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})
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}
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}
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