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Fix cursor jumping when we're positioned in top padding pressing up.

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This commit is contained in:
Blaž Hrastnik 2020-10-07 14:15:32 +09:00
parent 6848702b1f
commit 03795e5674
1 changed files with 10 additions and 2 deletions
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12
helix-view/src/commands.rs
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@ -147,11 +147,15 @@ pub fn check_cursor_in_view(view: &mut View) -> bool {
}
pub fn page_up(view: &mut View, _count: usize) {
if view.first_line < PADDING {
return;
}
view.first_line = view.first_line.saturating_sub(view.size.1 as usize);
if !check_cursor_in_view(view) {
let text = view.state.doc();
let pos = text.line_to_char(view.last_line().saturating_sub(PADDING as usize));
let pos = text.line_to_char(view.last_line().saturating_sub(PADDING));
view.state.selection = Selection::single(pos, pos);
}
}
@ -167,11 +171,15 @@ pub fn page_down(view: &mut View, _count: usize) {
}
pub fn half_page_up(view: &mut View, _count: usize) {
if view.first_line < PADDING {
return;
}
view.first_line = view.first_line.saturating_sub(view.size.1 as usize / 2);
if !check_cursor_in_view(view) {
let text = &view.state.doc;
let pos = text.line_to_char(view.last_line() - PADDING as usize);
let pos = text.line_to_char(view.last_line() - PADDING);
view.state.selection = Selection::single(pos, pos);
}
}