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Implement scroll_to_top, scroll_to_bottom, scroll_to_left, and scroll_to_right

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Paul 2018-06-16 10:10:59 -07:00 committed by Paul Sajna
parent 0ed8eabc5e
commit 03e143f4c3
1 changed files with 26 additions and 0 deletions
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26
src/views/scroll_view.rs
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@ -107,6 +107,32 @@ impl<V> ScrollView<V> {
pub fn scroll_x(self, enabled: bool) -> Self {
self.with(|s| s.set_scroll_x(enabled))
}
/// Programmatically scroll to the top of the view.
pub fn scroll_to_top(&mut self) {
let curr_x = self.offset.x;
self.set_offset((curr_x,0));
}
/// Programmatically scroll to the bottom of the view.
pub fn scroll_to_bottom(&mut self) {
let max_y = self.inner_size.saturating_sub(self.available_size()).y;
let curr_x = self.offset.x;
self.set_offset((curr_x, max_y));
}
/// Programmatically scroll to the leftmost side of the view.
pub fn scroll_to_left(&mut self) {
let curr_y = self.offset.y;
self.set_offset((0, curr_y));
}
/// Programmatically scroll to the rightmost side of the view.
pub fn scroll_to_right(&mut self) {
let max_x = self.inner_size.saturating_sub(self.available_size()).x;
let curr_y = self.offset.y;
self.set_offset((max_x, curr_y));
}
/// Returns for each axis if we are scrolling.
fn is_scrolling(&self) -> XY<bool> {