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https://github.com/gdamore/tcell.git
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e7b14a71dc
fixes #526 tcell emits redundant attributes This work is inspired by, and partly derived from, work submitted by Simon Ser (@emersion). However, we've modified the bottom half of the terminfo parser to better support strings properly, and are using proper terminfo syntax. Instead of an attribute called Hyperlink, we have called it Url for the sake of brevity. While here we noticed and fixed bug #526, which could badly impact slow terminals, or slow links. This likely makes things better for folks coming over long distance SSH connections for example. We've also provided OSC 8 handling for all terminals which appear to support the mouse sequences; hopefully ones that don't handle this sensibly will just ignore it. (Limited testing seems to show this.)
92 lines
2.1 KiB
Go
92 lines
2.1 KiB
Go
//go:build ignore
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// +build ignore
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// Copyright 2022 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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package main
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import (
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"fmt"
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"os"
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"github.com/gdamore/tcell/v2"
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"github.com/gdamore/tcell/v2/encoding"
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"github.com/mattn/go-runewidth"
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)
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func emitStr(s tcell.Screen, x, y int, style tcell.Style, str string) int {
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for _, c := range str {
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var comb []rune
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w := runewidth.RuneWidth(c)
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if w == 0 {
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comb = []rune{c}
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c = ' '
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w = 1
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}
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s.SetContent(x, y, c, comb, style)
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x += w
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}
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return x
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}
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func displayDemo(s tcell.Screen) {
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w, h := s.Size()
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s.Clear()
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style := tcell.StyleDefault
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x := (w - 55) / 2
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x = emitStr(s, x, h/2, style, "Please visit the ")
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x = emitStr(s, x, h/2, style.Url("https://github.com/gdamore/tcell"), "GitHub Repository")
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emitStr(s, x, h/2, style, " for the source code.")
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style = tcell.StyleDefault.Foreground(tcell.ColorCadetBlue.TrueColor()).Background(tcell.ColorWhite)
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emitStr(s, (w-18)/2, h/2+2, style, "Press ESC to exit.")
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s.Show()
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}
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// This program just prints "Hello, World!". Press ESC to exit.
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func main() {
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encoding.Register()
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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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defStyle := tcell.StyleDefault.
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Background(tcell.ColorBlack).
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Foreground(tcell.ColorWhite)
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s.SetStyle(defStyle)
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displayDemo(s)
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for {
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switch ev := s.PollEvent().(type) {
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case *tcell.EventResize:
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s.Sync()
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displayDemo(s)
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case *tcell.EventKey:
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if ev.Key() == tcell.KeyEscape {
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s.Fini()
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os.Exit(0)
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}
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}
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}
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}
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