drawCursor

pub fn drawCursor(self: *TextEntryWidget) void {
    var sel = self.textLayout.selectionGet(self.len);
    if (sel.empty()) {
        // the cursor can be slightly outside the textLayout clip
        dvui.clipSet(self.scrollClip);

        var crect = self.textLayout.cursor_rect.plus(.{ .x = -1 });
        crect.w = 2;
        self.textLayout.screenRectScale(crect).r.fill(.{}, .{ .color = dvui.themeGet().focus, .fade = 1.0 });
    }
}