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mirror of https://github.com/wez/wezterm.git synced 2024-12-24 13:52:55 +03:00

wezterm: scroll the viewport when dragging to select text

closes https://github.com/wez/wezterm/issues/8
This commit is contained in:
Wez Furlong 2020-06-04 20:39:51 -07:00
parent 927129a97f
commit 03ba1a98f0

View File

@ -2945,6 +2945,32 @@ impl TermWindow {
}
}
// When the mouse gets close enough to the top or bottom then scroll
// the viewport so that we can see more in that direction and are able
// to select more than fits in the viewport.
// This is similar to the logic in the copy mode overlay, but the gap
// is smaller because it feels more natural for mouse selection to have
// a smaller gpa.
const VERTICAL_GAP: isize = 2;
let dims = tab.renderer().get_dimensions();
let top = self.get_viewport(tab.tab_id()).unwrap_or(dims.physical_top);
let vertical_gap = if dims.physical_top <= VERTICAL_GAP {
1
} else {
VERTICAL_GAP
};
let top_gap = y - top;
if top_gap < vertical_gap {
// Increase the gap so we can "look ahead"
self.set_viewport(tab.tab_id(), Some(y.saturating_sub(vertical_gap)), dims);
} else {
let bottom_gap = (dims.viewport_rows as isize).saturating_sub(top_gap);
if bottom_gap < vertical_gap {
self.set_viewport(tab.tab_id(), Some(top + vertical_gap - bottom_gap), dims);
}
}
self.window.as_ref().unwrap().invalidate();
}