mirror of https://github.com/gdamore/tcell.git
119 lines
2.5 KiB
Go
119 lines
2.5 KiB
Go
// +build ignore
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// Copyright 2015 The TCell Authors
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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 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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// boxes just displays random colored boxes on your terminal screen.
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// Press ESC to exit the program.
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package main
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import (
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"fmt"
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"math/rand"
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"os"
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"time"
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"github.com/gdamore/tcell/v2"
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)
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func makebox(s tcell.Screen) {
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w, h := s.Size()
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if w == 0 || h == 0 {
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return
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}
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glyphs := []rune{'@', '#', '&', '*', '=', '%', 'Z', 'A'}
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lx := rand.Int() % w
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ly := rand.Int() % h
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lw := rand.Int() % (w - lx)
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lh := rand.Int() % (h - ly)
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st := tcell.StyleDefault
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gl := ' '
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if s.Colors() > 256 {
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rgb := tcell.NewHexColor(int32(rand.Int() & 0xffffff))
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st = st.Background(rgb)
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} else if s.Colors() > 1 {
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st = st.Background(tcell.Color(rand.Int() % s.Colors()) | tcell.ColorValid)
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} else {
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st = st.Reverse(rand.Int()%2 == 0)
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gl = glyphs[rand.Int()%len(glyphs)]
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}
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for row := 0; row < lh; row++ {
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for col := 0; col < lw; col++ {
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s.SetCell(lx+col, ly+row, st, gl)
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}
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}
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s.Show()
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}
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func main() {
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tcell.SetEncodingFallback(tcell.EncodingFallbackASCII)
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s, e := tcell.NewScreen()
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if e != nil {
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fmt.Fprintf(os.Stderr, "%v\n", e)
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os.Exit(1)
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}
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if e = s.Init(); e != nil {
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fmt.Fprintf(os.Stderr, "%v\n", e)
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os.Exit(1)
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}
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s.SetStyle(tcell.StyleDefault.
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Foreground(tcell.ColorBlack).
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Background(tcell.ColorWhite))
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s.Clear()
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quit := make(chan struct{})
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go func() {
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for {
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ev := s.PollEvent()
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switch ev := ev.(type) {
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case *tcell.EventKey:
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switch ev.Key() {
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case tcell.KeyEscape, tcell.KeyEnter:
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close(quit)
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return
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case tcell.KeyCtrlL:
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s.Sync()
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}
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case *tcell.EventResize:
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s.Sync()
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}
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}
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}()
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cnt := 0
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dur := time.Duration(0)
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loop:
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for {
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select {
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case <-quit:
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break loop
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case <-time.After(time.Millisecond * 50):
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}
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start := time.Now()
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makebox(s)
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cnt++
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dur += time.Now().Sub(start)
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}
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s.Fini()
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fmt.Printf("Finished %d boxes in %s\n", cnt, dur)
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fmt.Printf("Average is %0.3f ms / box\n", (float64(dur)/float64(cnt))/1000000.0)
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}
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