Nate Butler
a347c4def7
This PR adds a theme preview tab to help get an at a glance overview of the styles in a theme.  You can open it using `debug: open theme preview`. The next major theme preview PR will move this into it's own crate, as it will grow substantially as we add content. Next for theme preview: - Update layout to two columns, with controls on the right for selecting theme, layer/elevation-index, etc. - Cover more UI elements in preview - Display theme colors in a more helpful way - Add syntax & markdown previews Release Notes: - Added a way to preview the current theme's styles with the `debug: open theme preview` command.
99 lines
4.1 KiB
Rust
99 lines
4.1 KiB
Rust
use std::fmt::{self, Display, Formatter};
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use gpui::{hsla, point, px, BoxShadow, Hsla, WindowContext};
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use smallvec::{smallvec, SmallVec};
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use theme::ActiveTheme;
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/// Today, elevation is primarily used to add shadows to elements, and set the correct background for elements like buttons.
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///
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/// Elevation can be thought of as the physical closeness of an element to the
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/// user. Elements with lower elevations are physically further away on the
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/// z-axis and appear to be underneath elements with higher elevations.
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///
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/// In the future, a more complete approach to elevation may be added.
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub enum ElevationIndex {
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/// On the layer of the app background. This is under panels, panes, and
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/// other surfaces.
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Background,
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/// The primary surface – Contains panels, panes, containers, etc.
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Surface,
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/// The same elevation as the primary surface, but used for the editable areas, like buffers
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EditorSurface,
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/// A surface that is elevated above the primary surface. but below washes, models, and dragged elements.
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ElevatedSurface,
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/// A surface that is above all non-modal surfaces, and separates the app from focused intents, like dialogs, alerts, modals, etc.
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Wash,
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/// A surface above the [ElevationIndex::Wash] that is used for dialogs, alerts, modals, etc.
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ModalSurface,
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/// A surface above all other surfaces, reserved exclusively for dragged elements, like a dragged file, tab or other draggable element.
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DraggedElement,
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}
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impl Display for ElevationIndex {
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fn fmt(&self, f: &mut Formatter) -> fmt::Result {
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match self {
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ElevationIndex::Background => write!(f, "Background"),
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ElevationIndex::Surface => write!(f, "Surface"),
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ElevationIndex::EditorSurface => write!(f, "Editor Surface"),
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ElevationIndex::ElevatedSurface => write!(f, "Elevated Surface"),
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ElevationIndex::Wash => write!(f, "Wash"),
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ElevationIndex::ModalSurface => write!(f, "Modal Surface"),
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ElevationIndex::DraggedElement => write!(f, "Dragged Element"),
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}
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}
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}
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impl ElevationIndex {
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/// Returns an appropriate shadow for the given elevation index.
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pub fn shadow(self) -> SmallVec<[BoxShadow; 2]> {
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match self {
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ElevationIndex::Surface => smallvec![],
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ElevationIndex::EditorSurface => smallvec![],
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ElevationIndex::ElevatedSurface => smallvec![BoxShadow {
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color: hsla(0., 0., 0., 0.12),
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offset: point(px(0.), px(2.)),
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blur_radius: px(3.),
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spread_radius: px(0.),
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}],
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ElevationIndex::ModalSurface => smallvec![
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BoxShadow {
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color: hsla(0., 0., 0., 0.12),
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offset: point(px(0.), px(2.)),
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blur_radius: px(3.),
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spread_radius: px(0.),
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},
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BoxShadow {
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color: hsla(0., 0., 0., 0.08),
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offset: point(px(0.), px(3.)),
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blur_radius: px(6.),
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spread_radius: px(0.),
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},
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BoxShadow {
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color: hsla(0., 0., 0., 0.04),
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offset: point(px(0.), px(6.)),
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blur_radius: px(12.),
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spread_radius: px(0.),
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},
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],
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_ => smallvec![],
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}
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}
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/// Returns the background color for the given elevation index.
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pub fn bg(&self, cx: &WindowContext) -> Hsla {
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match self {
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ElevationIndex::Background => cx.theme().colors().background,
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ElevationIndex::Surface => cx.theme().colors().surface_background,
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ElevationIndex::EditorSurface => cx.theme().colors().editor_background,
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ElevationIndex::ElevatedSurface => cx.theme().colors().elevated_surface_background,
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ElevationIndex::Wash => gpui::transparent_black(),
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ElevationIndex::ModalSurface => cx.theme().colors().elevated_surface_background,
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ElevationIndex::DraggedElement => gpui::transparent_black(),
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}
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}
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}
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