StratoSDK is a framework with a declarative approach similar to Flutter/React, written and designed entirely for Rust.
| 1 | //! Module containing definitions related to UI magnification via a [`ZoomFactor`]. |
| 2 | |
| 3 | use pathfinder_geometry::vector::Vector2F; |
| 4 | |
| 5 | /// The zoom factor of the application. All UI elements are magnified by this value. |
| 6 | #[derive(Copy, Clone)] |
| 7 | pub struct ZoomFactor(f32); |
| 8 | |
| 9 | impl ZoomFactor { |
| 10 | pub fn new(zoom_level: f32) -> Self { |
| 11 | Self(zoom_level) |
| 12 | } |
| 13 | } |
| 14 | |
| 15 | impl Default for ZoomFactor { |
| 16 | fn default() -> Self { |
| 17 | Self(1.0) |
| 18 | } |
| 19 | } |
| 20 | |
| 21 | /// Helper trait that scales a value by the given [`ZoomFactor`]. |
| 22 | pub trait Scale: Sized { |
| 23 | /// Scales the current value up by the current [`ZoomFactor`]. |
| 24 | fn scale_up(self, zoom_level: ZoomFactor) -> Self; |
| 25 | |
| 26 | /// Scales the current value down by the current [`ZoomFactor`]. |
| 27 | fn scale_down(self, zoom_level: ZoomFactor) -> Self { |
| 28 | self.scale_up(ZoomFactor::new(1.0 / zoom_level.0)) |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | impl Scale for f32 { |
| 33 | fn scale_up(self, zoom_level: ZoomFactor) -> Self { |
| 34 | self * zoom_level.0 |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | impl Scale for Vector2F { |
| 39 | fn scale_up(self, zoom_level: ZoomFactor) -> Self { |
| 40 | Vector2F::new(self.x() * zoom_level.0, self.y() * zoom_level.0) |
| 41 | } |
| 42 | } |
| 43 |