diff options
Diffstat (limited to 'helix-view/src/commands.rs')
| -rw-r--r-- | helix-view/src/commands.rs | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/helix-view/src/commands.rs b/helix-view/src/commands.rs index b2223d48..9ebdb4c4 100644 --- a/helix-view/src/commands.rs +++ b/helix-view/src/commands.rs @@ -13,7 +13,7 @@ use crate::view::View; /// state (usually by creating and applying a transaction). pub type Command = fn(view: &mut View, count: usize); -const PADDING: u16 = 10; +const PADDING: u16 = 5; pub fn move_char_left(view: &mut View, count: usize) { // TODO: use a transaction @@ -138,10 +138,9 @@ pub fn move_file_end(view: &mut View, _count: usize) { pub fn check_cursor_in_view(view: &mut View) -> bool { let cursor = view.state.selection().cursor(); let line = view.state.doc().char_to_line(cursor) as u16; - let document_end = view.first_line + view.size.1.saturating_sub(2); - let padding = 5u16; + let document_end = view.first_line + view.size.1.saturating_sub(1); - if (line > document_end.saturating_sub(padding)) | (line < view.first_line + padding) { + if (line > document_end.saturating_sub(PADDING)) | (line < view.first_line + PADDING) { return false; } true @@ -150,9 +149,13 @@ pub fn check_cursor_in_view(view: &mut View) -> bool { pub fn page_up(view: &mut View, _count: usize) { let text = &view.state.doc; view.first_line = view.first_line.saturating_sub(view.size.1); - let pos = text.line_to_char(view.first_line as usize); + let pos = text.line_to_char(view.last_line() as usize); - view.state.selection = Selection::single(pos, pos); + 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)); + view.state.selection = Selection::single(pos, pos); + } } pub fn page_down(view: &mut View, _count: usize) { @@ -168,13 +171,14 @@ pub fn half_page_up(view: &mut View, _count: usize) { view.first_line = view.first_line.saturating_sub(view.size.1 / 2); if !check_cursor_in_view(view) { let text = &view.state.doc; - let pos = text.line_to_char(view.first_line as usize); + let pos = text.line_to_char(view.last_line() - PADDING as usize); view.state.selection = Selection::single(pos, pos); } } pub fn half_page_down(view: &mut View, _count: usize) { - if view.first_line < view.state.doc().len_lines() as u16 - view.size.1 { + let lines = view.state.doc().len_lines(); + if view.first_line < lines.saturating_sub(view.size.1 as usize) as u16 { view.first_line += view.size.1 / 2; } if !check_cursor_in_view(view) { |