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Fix crash

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There might be a better way to track cursor state such that these checks
aren't necessary.
This commit is contained in:
Joe Wilm 2016-09-16 17:12:53 -07:00
parent c5bc39fe26
commit 7da9de34d8
2 changed files with 6 additions and 2 deletions
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4
src/grid.rs
View file

@ -134,6 +134,10 @@ impl<T> Grid<T> {
}
}
pub fn contains(&self, cursor: &Cursor) -> bool {
self.lines > cursor.line && self.cols > cursor.col
}
/// Swap two lines in the grid
///
/// This could have used slice::swap internally, but we are able to have

4
src/term.rs
View file

@ -36,7 +36,7 @@ pub struct RenderGrid<'a> {
impl<'a> RenderGrid<'a> {
fn new<'b>(grid: &'b mut Grid<Cell>, cursor: &'b Cursor, mode: TermMode) -> RenderGrid<'b> {
if mode.contains(mode::SHOW_CURSOR) {
if mode.contains(mode::SHOW_CURSOR) && grid.contains(cursor) {
let cell = &mut grid[cursor];
mem::swap(&mut cell.fg, &mut cell.bg);
}
@ -51,7 +51,7 @@ impl<'a> RenderGrid<'a> {
impl<'a> Drop for RenderGrid<'a> {
fn drop(&mut self) {
if self.mode.contains(mode::SHOW_CURSOR) {
if self.mode.contains(mode::SHOW_CURSOR) && self.inner.contains(self.cursor) {
let cell = &mut self.inner[self.cursor];
mem::swap(&mut cell.fg, &mut cell.bg);
}