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ChangePainter

gpui_kit_grid

Trait ChangePainter 

Source 
pub trait ChangePainter: 'static {
    // Required method
    fn paint(
        &self,
        change: &CellChange,
        palette: &ChangePalette,
        style: &mut CellStyle,
    );
}
Expand description

Paints a highlighted change into a cell’s default style, before the delegate’s cell_style adjusts it.

Called in prepaint for every hot visible cell, every frame: it must not allocate or lock. CellChange::column_ix tells which column the cell is in, so a painter can flash some columns and not others:

use gpui_kit_grid::{
    CellChange, CellStyle, ChangePainter, ChangePalette, ColumnIx, RowChange, UniformChanges,
};

/// Stage 1's colours on the price only; inserts and removals whole.
struct PriceOnly(ColumnIx);

impl ChangePainter for PriceOnly {
    fn paint(&self, change: &CellChange, palette: &ChangePalette, style: &mut CellStyle) {
        if change.change() != RowChange::Updated || change.column_ix() == Some(self.0) {
            UniformChanges.paint(change, palette, style);
        }
    }
}

Required Methods§

Source

fn paint( &self, change: &CellChange, palette: &ChangePalette, style: &mut CellStyle, )

Paints change into style.

Implementors§