@ -22,6 +22,7 @@ pub struct Popup<T: Component> {
auto_close : bool ,
auto_close : bool ,
ignore_escape_key : bool ,
ignore_escape_key : bool ,
id : & ' static str ,
id : & ' static str ,
has_scrollbar : bool ,
}
}
impl < T : Component > Popup < T > {
impl < T : Component > Popup < T > {
@ -37,6 +38,7 @@ impl<T: Component> Popup<T> {
auto_close : false ,
auto_close : false ,
ignore_escape_key : false ,
ignore_escape_key : false ,
id ,
id ,
has_scrollbar : true ,
}
}
}
}
@ -128,6 +130,14 @@ impl<T: Component> Popup<T> {
}
}
}
}
/// Toggles the Popup's scrollbar.
/// Consider disabling the scrollbar in case the child
/// already has its own.
pub fn with_scrollbar ( mut self , enable_scrollbar : bool ) -> Self {
self . has_scrollbar = enable_scrollbar ;
self
}
pub fn contents ( & self ) -> & T {
pub fn contents ( & self ) -> & T {
& self . contents
& self . contents
}
}
@ -228,6 +238,40 @@ impl<T: Component> Component for Popup<T> {
let inner = area . inner ( & self . margin ) ;
let inner = area . inner ( & self . margin ) ;
self . contents . render ( inner , surface , cx ) ;
self . contents . render ( inner , surface , cx ) ;
// render scrollbar if contents do not fit
if self . has_scrollbar {
let win_height = inner . height as usize ;
let len = self . child_size . 1 as usize ;
let fits = len < = win_height ;
let scroll = self . scroll ;
let scroll_style = cx . editor . theme . get ( "ui.menu.scroll" ) ;
const fn div_ceil ( a : usize , b : usize ) -> usize {
( a + b - 1 ) / b
}
if ! fits {
let scroll_height = div_ceil ( win_height . pow ( 2 ) , len ) . min ( win_height ) ;
let scroll_line = ( win_height - scroll_height ) * scroll
/ std ::cmp ::max ( 1 , len . saturating_sub ( win_height ) ) ;
let mut cell ;
for i in 0 .. win_height {
cell = & mut surface [ ( inner . right ( ) - 1 , inner . top ( ) + i as u16 ) ] ;
cell . set_symbol ( "▐" ) ; // right half block
if scroll_line < = i & & i < scroll_line + scroll_height {
// Draw scroll thumb
cell . set_fg ( scroll_style . fg . unwrap_or ( helix_view ::theme ::Color ::Reset ) ) ;
} else {
// Draw scroll track
cell . set_fg ( scroll_style . bg . unwrap_or ( helix_view ::theme ::Color ::Reset ) ) ;
}
}
}
}
}
}
fn id ( & self ) -> Option < & ' static str > {
fn id ( & self ) -> Option < & ' static str > {