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Add manual scroll methods to scroll::Core
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@ -498,15 +498,43 @@ impl Core {
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self.with(|s| s.set_scroll_x(enabled))
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}
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/// Try to keep the given `rect` in view.
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pub fn keep_in_view(&mut self, rect: Rect) {
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let min = rect.bottom_right().saturating_sub(self.last_size);
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let max = rect.top_left();
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let (min, max) = (Vec2::min(min, max), Vec2::max(min, max));
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self.offset = self.offset.or_min(max).or_max(min);
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}
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/// Scroll until the given point is visible.
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pub fn scroll_to(&mut self, pos: Vec2) {
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// The furthest top-left we can go
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let min = pos.saturating_sub(self.last_size);
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// How far to the bottom-right we can go
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let max = pos;
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self.offset = self.offset.or_min(max).or_max(min);
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}
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/// Scroll until the given column is visible.
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pub fn scroll_to_x(&mut self, x: usize) {
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if x > self.offset.x + self.last_size.x {
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if x >= self.offset.x + self.last_size.x {
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self.offset.x = 1 + x - self.last_size.x;
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} else if x < self.offset.x {
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self.offset.x = x;
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}
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}
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/// Scroll until the given row is visible.
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pub fn scroll_to_y(&mut self, y: usize) {
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if y >= self.offset.y + self.last_size.y {
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self.offset.y = 1 + y - self.last_size.y;
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} else if y < self.offset.y {
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self.offset.y = y;
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}
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}
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/// Programmatically scroll to the top of the view.
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pub fn scroll_to_top(&mut self) {
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let curr_x = self.offset.x;
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