71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
// gomuks - A terminal Matrix client written in Go.
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// Copyright (C) 2018 Tulir Asokan
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package widget
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import (
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"maunium.net/go/tview"
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"maunium.net/go/tcell"
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)
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// Center wraps the given tview primitive into a Flex element in order to
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// vertically and horizontally center the given primitive.
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func Center(width, height int, p tview.Primitive) tview.Primitive {
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return tview.NewFlex().
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AddItem(nil, 0, 1, false).
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AddItem(tview.NewFlex().
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SetDirection(tview.FlexRow).
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AddItem(nil, 0, 1, false).
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AddItem(p, height, 1, true).
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AddItem(nil, 0, 1, false), width, 1, true).
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AddItem(nil, 0, 1, false)
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}
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type transparentCenter struct {
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*tview.Box
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prefWidth, prefHeight int
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p tview.Primitive
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}
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func TransparentCenter(width, height int, p tview.Primitive) tview.Primitive {
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return &transparentCenter{
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Box: tview.NewBox(),
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prefWidth: width,
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prefHeight: height,
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p: p,
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}
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}
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func (tc *transparentCenter) Draw(screen tcell.Screen) {
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x, y, width, height := tc.GetRect()
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if width > tc.prefWidth {
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x += (width - tc.prefWidth) / 2
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width = tc.prefWidth
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}
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if height > tc.prefHeight {
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y += (height - tc.prefHeight) / 2
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height = tc.prefHeight
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}
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tc.p.SetRect(x, y, width, height)
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tc.p.Draw(screen)
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}
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func (tc *transparentCenter) Focus(delegate func(p tview.Primitive)) {
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if delegate != nil {
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delegate(tc.p)
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}
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}
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