guise/anim/
prop.rs

1//! What a motion is allowed to move.
2//!
3//! gpui has no transform matrix on a `div`, so there is no `translate` or
4//! `scale` to animate — motion is expressed through the properties that do
5//! exist: opacity, the relative inset (which shifts an element at paint time
6//! without disturbing its siblings, the closest thing to a translate), the
7//! box, and colours. Naming them in a `Copy` enum instead of strings is what
8//! makes [`Frame::apply`](super::Frame::apply) exhaustive and a typo a
9//! compile error.
10
11/// One animatable property.
12#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
13pub enum Prop {
14  Opacity,
15  /// Horizontal offset in px, applied as a relative inset — the element
16  /// moves, the layout does not.
17  X,
18  /// Vertical offset in px, same mechanism as [`Prop::X`].
19  Y,
20  Width,
21  Height,
22  MarginTop,
23  MarginRight,
24  MarginBottom,
25  MarginLeft,
26  PadTop,
27  PadRight,
28  PadBottom,
29  PadLeft,
30  Radius,
31  BorderWidth,
32  Gap,
33  FontSize,
34  Background,
35  BorderColor,
36  TextColor,
37  /// Turns in degrees. gpui can only rotate an `Image`/`Svg` (through its
38  /// own `Transformation`), so this is carried for you to read out of the
39  /// [`Frame`](super::Frame) — `apply` skips it.
40  Rotate,
41  /// A multiplier. Same story as [`Prop::Rotate`]: yours to apply.
42  Scale,
43  /// Anything else you want tweened. The value never touches a style — you
44  /// read it back out of the frame and do what you like with it.
45  Custom(&'static str),
46}
47
48impl Prop {
49  /// Whether the property expects an [`AnimValue::Color`](super::AnimValue).
50  pub fn is_color(self) -> bool {
51    matches!(self, Prop::Background | Prop::BorderColor | Prop::TextColor)
52  }
53}
guise/anim/prop.rs

guise/anim/
prop.rs
