gomuks/ui/widget/center.go

// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2018 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package widget

import (
	"maunium.net/go/tview"
)

// Center wraps the given tview primitive into a Flex element in order to
// vertically and horizontally center the given primitive.
func Center(width, height int, p tview.Primitive) tview.Primitive {
	return tview.NewFlex().
		AddItem(tview.NewBox(), 0, 1, false).
		AddItem(tview.NewFlex().
			SetDirection(tview.FlexRow).
			AddItem(tview.NewBox(), 0, 1, false).
			AddItem(p, height, 1, true).
			AddItem(tview.NewBox(), 0, 1, false), width, 1, true).
		AddItem(tview.NewBox(), 0, 1, false)
}