1 unstable release
0.2.0 | Nov 1, 2024 |
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#1104 in Command-line interface
186 downloads per month
Used in 9 crates
(6 directly)
9KB
56 lines
This crate is a part of rat-salsa.
Rat-Reloc(ate)
RelocatableState enables rendering StatefulWidget's to a temporary buffer.
After rendering a stateful widget all areas derived from the render area will be wrong. This trait defines a relocate function that corrects the areas afterwards.
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Doesn't impact normal rendering of the widget. It can just use the area and be done with it.
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Straightforward
use rat_reloc::{RelocatableState, relocate_area}; use ratatui::layout::Rect;; # struct ButtonState{ area:Rect, inner:Rect} impl RelocatableState for ButtonState { fn relocate(&mut self, shift: (i16, i16), clip: Rect) { self.area = relocate_area(self.area, shift, clip); self.inner = relocate_area(self.inner, shift, clip); } }
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Decent to implement for a view widget
use ratatui::layout::Rect; use ratatui::buffer::Buffer; use ratatui::widgets::StatefulWidget; use rat_reloc::RelocatableState; pub struct RelocatedRender; impl RelocatedRender { fn render<W, S>(widget: W, area: Rect, state: &mut S) where W: StatefulWidget<State = S>, S: RelocatableState, { // remap area let area = Rect::default(); // use inner buffer let mut buf = Buffer::default(); // render to buffer widget.render(area, &mut buf, state); // calculate shift and clip let shift = (-1, -1); let clip = Rect::default(); // correct state state.relocate(shift, clip); } }
Dependencies
~8–17MB
~243K SLoC