mirror of https://github.com/mum4k/termdash.git
120 lines
3.0 KiB
Go
120 lines
3.0 KiB
Go
// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Binary sparklinedemo displays a couple of SparkLine widgets.
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// Exist when 'q' is pressed.
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package main
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import (
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"context"
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"math/rand"
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"time"
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"github.com/mum4k/termdash"
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"github.com/mum4k/termdash/cell"
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"github.com/mum4k/termdash/container"
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"github.com/mum4k/termdash/draw"
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"github.com/mum4k/termdash/terminal/termbox"
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"github.com/mum4k/termdash/terminalapi"
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"github.com/mum4k/termdash/widgets/sparkline"
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)
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// playSparkLine continuously adds values to the SparkLine, once every delay.
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// Exits when the context expires.
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func playSparkLine(ctx context.Context, sl *sparkline.SparkLine, delay time.Duration) {
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const max = 100
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ticker := time.NewTicker(delay)
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defer ticker.Stop()
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for {
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select {
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case <-ticker.C:
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v := int(rand.Int31n(max + 1))
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if err := sl.Add([]int{v}); err != nil {
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panic(err)
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}
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case <-ctx.Done():
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return
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}
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}
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}
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func main() {
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t, err := termbox.New()
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if err != nil {
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panic(err)
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}
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defer t.Close()
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ctx, cancel := context.WithCancel(context.Background())
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green := sparkline.New(
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sparkline.Label("Green SparkLine", cell.FgColor(cell.ColorBlue)),
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sparkline.Color(cell.ColorGreen),
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)
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go playSparkLine(ctx, green, 250*time.Millisecond)
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red := sparkline.New(
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sparkline.Label("Red SparkLine", cell.FgColor(cell.ColorBlue)),
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sparkline.Color(cell.ColorRed),
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)
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go playSparkLine(ctx, red, 500*time.Millisecond)
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yellow := sparkline.New(
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sparkline.Label("Yellow SparkLine", cell.FgColor(cell.ColorGreen)),
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sparkline.Color(cell.ColorYellow),
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)
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go playSparkLine(ctx, yellow, 1*time.Second)
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c, err := container.New(
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t,
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container.Border(draw.LineStyleLight),
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container.BorderTitle("PRESS Q TO QUIT"),
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container.SplitVertical(
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container.Left(
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container.SplitHorizontal(
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container.Top(),
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container.Bottom(
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container.Border(draw.LineStyleLight),
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container.BorderTitle("SparkLine group"),
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container.SplitHorizontal(
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container.Top(
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container.PlaceWidget(green),
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),
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container.Bottom(
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container.PlaceWidget(red),
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),
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),
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),
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),
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),
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container.Right(
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container.Border(draw.LineStyleLight),
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container.PlaceWidget(yellow),
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),
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),
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)
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if err != nil {
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panic(err)
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}
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quitter := func(k *terminalapi.Keyboard) {
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if k.Key == 'q' || k.Key == 'Q' {
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cancel()
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}
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}
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if err := termdash.Run(ctx, t, c, termdash.KeyboardSubscriber(quitter)); err != nil {
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panic(err)
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}
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}
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