Conrad Irwin
428c143fbb
Co-Authored-By: ahmadraheel@gmail.com Release Notes: - vim: allow scrolling the currently open information overlay using `ctrl-{u,d,e,y}`etc. (#11883)
37 lines
1.0 KiB
Rust
37 lines
1.0 KiB
Rust
use crate::Editor;
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use serde::Deserialize;
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use ui::{px, Pixels};
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#[derive(Debug, Clone, PartialEq, Deserialize)]
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pub enum ScrollAmount {
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// Scroll N lines (positive is towards the end of the document)
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Line(f32),
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// Scroll N pages (positive is towards the end of the document)
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Page(f32),
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}
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impl ScrollAmount {
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pub fn lines(&self, editor: &mut Editor) -> f32 {
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match self {
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Self::Line(count) => *count,
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Self::Page(count) => editor
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.visible_line_count()
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.map(|mut l| {
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// for full pages subtract one to leave an anchor line
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if count.abs() == 1.0 {
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l -= 1.0
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}
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(l * count).trunc()
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})
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.unwrap_or(0.),
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}
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}
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pub fn pixels(&self, line_height: Pixels, height: Pixels) -> Pixels {
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match self {
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ScrollAmount::Line(x) => px(line_height.0 * x),
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ScrollAmount::Page(x) => px(height.0 * x),
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}
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}
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}
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