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@ -13,7 +13,7 @@ use crate::view::View;
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/// state (usually by creating and applying a transaction).
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pub type Command = fn(view: &mut View, count: usize);
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const PADDING: u16 = 10;
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const PADDING: u16 = 5;
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pub fn move_char_left(view: &mut View, count: usize) {
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// TODO: use a transaction
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@ -138,10 +138,9 @@ pub fn move_file_end(view: &mut View, _count: usize) {
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pub fn check_cursor_in_view(view: &mut View) -> bool {
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let cursor = view.state.selection().cursor();
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let line = view.state.doc().char_to_line(cursor) as u16;
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let document_end = view.first_line + view.size.1.saturating_sub(2);
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let padding = 5u16;
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let document_end = view.first_line + view.size.1.saturating_sub(1);
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if (line > document_end.saturating_sub(padding)) | (line < view.first_line + padding) {
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if (line > document_end.saturating_sub(PADDING)) | (line < view.first_line + PADDING) {
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return false;
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}
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true
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@ -150,9 +149,13 @@ pub fn check_cursor_in_view(view: &mut View) -> bool {
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pub fn page_up(view: &mut View, _count: usize) {
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let text = &view.state.doc;
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view.first_line = view.first_line.saturating_sub(view.size.1);
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let pos = text.line_to_char(view.first_line as usize);
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let pos = text.line_to_char(view.last_line() as usize);
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view.state.selection = Selection::single(pos, pos);
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if !check_cursor_in_view(view) {
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let text = &view.state.doc;
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let pos = text.line_to_char(view.last_line().saturating_sub(PADDING as usize));
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view.state.selection = Selection::single(pos, pos);
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}
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}
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pub fn page_down(view: &mut View, _count: usize) {
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@ -168,13 +171,14 @@ pub fn half_page_up(view: &mut View, _count: usize) {
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view.first_line = view.first_line.saturating_sub(view.size.1 / 2);
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if !check_cursor_in_view(view) {
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let text = &view.state.doc;
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let pos = text.line_to_char(view.first_line as usize);
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let pos = text.line_to_char(view.last_line() - PADDING as usize);
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view.state.selection = Selection::single(pos, pos);
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}
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}
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pub fn half_page_down(view: &mut View, _count: usize) {
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if view.first_line < view.state.doc().len_lines() as u16 - view.size.1 {
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let lines = view.state.doc().len_lines();
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if view.first_line < lines.saturating_sub(view.size.1 as usize) as u16 {
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view.first_line += view.size.1 / 2;
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}
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if !check_cursor_in_view(view) {
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