use crate::Editor;use serde::Deserialize;use ui::{px, Pixels};#[derive(Debug, Clone, PartialEq, Deserialize)]pub enum ScrollAmount { // Scroll N lines (positive is towards the end of the document) Line(f32), // Scroll N pages (positive is towards the end of the document) Page(f32),}impl ScrollAmount { pub fn lines(&self, editor: &mut Editor) -> f32 { match self { Self::Line(count) => *count, Self::Page(count) => editor .visible_line_count() .map(|mut l| { // for full pages subtract one to leave an anchor line if count.abs() == 1.0 { l -= 1.0 } (l * count).trunc() }) .unwrap_or(0.), } } pub fn pixels(&self, line_height: Pixels, height: Pixels) -> Pixels { match self { ScrollAmount::Line(x) => px(line_height.0 * x), ScrollAmount::Page(x) => px(height.0 * x), } }}
use crate::Editor;
use serde::Deserialize;
use ui::{px, Pixels};
#[derive(Debug, Clone, PartialEq, Deserialize)]
pub enum ScrollAmount {
// Scroll N lines (positive is towards the end of the document)
Line(f32),
// Scroll N pages (positive is towards the end of the document)
Page(f32),
}
impl ScrollAmount {
pub fn lines(&self, editor: &mut Editor) -> f32 {
match self {
Self::Line(count) => *count,
Self::Page(count) => editor
.visible_line_count()
.map(|mut l| {
// for full pages subtract one to leave an anchor line
if count.abs() == 1.0 {
l -= 1.0
}
(l * count).trunc()
})
.unwrap_or(0.),
}
}
pub fn pixels(&self, line_height: Pixels, height: Pixels) -> Pixels {
match self {
ScrollAmount::Line(x) => px(line_height.0 * x),
ScrollAmount::Page(x) => px(height.0 * x),
}
}
}