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Fix underflow in ScrollView

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This commit is contained in:
Alexandre Bury 2018-07-24 22:53:56 -07:00
parent c49d18034d
commit 09fcbf225e
1 changed files with 5 additions and 1 deletions
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6
src/views/scroll_view.rs
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@ -38,6 +38,8 @@ pub struct ScrollView<V> {
show_scrollbars: bool, show_scrollbars: bool,
/// How much padding should be between content and scrollbar? /// How much padding should be between content and scrollbar?
///
/// scrollbar_padding.x is the vertical padding before the horizontal scrollbar.
scrollbar_padding: Vec2, scrollbar_padding: Vec2,
/// Initial position of the cursor when dragging. /// Initial position of the cursor when dragging.
@ -364,7 +366,9 @@ where
let available = self.available_size(); let available = self.available_size();
// The number of steps is 1 + the "extra space" // The number of steps is 1 + the "extra space"
let steps = (available + (1, 1)).saturating_sub(lengths); let steps = (available + (1, 1)).saturating_sub(lengths);
steps * self.offset / (self.inner_size + (1, 1) - available) let max_offset = self.inner_size.saturating_sub(available) + (1, 1);
steps * self.offset / max_offset
} }
/// Apply the scrolling strategy to the current scroll position. /// Apply the scrolling strategy to the current scroll position.