1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
//go:build ignore
// +build ignore
// Copyright 2024 The TCell Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"fmt"
"os"
"unicode/utf8"
"github.com/gdamore/tcell/v2"
"github.com/gdamore/tcell/v2/encoding"
"github.com/mattn/go-runewidth"
)
func emitStr(s tcell.Screen, x, y int, style tcell.Style, str string) {
for _, c := range str {
var comb []rune
w := runewidth.RuneWidth(c)
if w == 0 {
comb = []rune{c}
c = ' '
w = 1
}
s.SetContent(x, y, c, comb, style)
x += w
}
}
var clipboard []byte
func displayHelloWorld(s tcell.Screen) {
w, h := s.Size()
s.Clear()
style := tcell.StyleDefault.Foreground(tcell.ColorCadetBlue.TrueColor()).Background(tcell.ColorWhite)
emitStr(s, w/2-14, h/2, style, "Press 1 to set clipboard")
emitStr(s, w/2-14, h/2+1, style, "Press 2 to get clipboard")
msg := ""
if utf8.Valid(clipboard) {
cp := string(clipboard)
if len(cp) >= w-25 {
cp = cp[:21] + " ..."
}
msg = fmt.Sprintf("Clipboard (%d bytes): %s", len(clipboard), cp)
} else if clipboard != nil {
msg = fmt.Sprintf("Clipboard (%d bytes) Not Valid UTF-8", len(clipboard))
} else {
msg = "No clipboard data"
}
emitStr(s, (w-len(msg))/2, h/2+3, tcell.StyleDefault, msg)
emitStr(s, w/2-9, h/2+5, tcell.StyleDefault, "Press ESC to exit.")
s.Show()
}
// This program just prints "Hello, World!". Press ESC to exit.
func main() {
encoding.Register()
s, e := tcell.NewScreen()
if e != nil {
fmt.Fprintf(os.Stderr, "%v\n", e)
os.Exit(1)
}
if e := s.Init(); e != nil {
fmt.Fprintf(os.Stderr, "%v\n", e)
os.Exit(1)
}
defStyle := tcell.StyleDefault.
Background(tcell.ColorBlack).
Foreground(tcell.ColorWhite)
s.SetStyle(defStyle)
displayHelloWorld(s)
for {
switch ev := s.PollEvent().(type) {
case *tcell.EventResize:
s.Sync()
displayHelloWorld(s)
case *tcell.EventKey:
switch ev.Key() {
case tcell.KeyRune:
switch ev.Rune() {
case '1':
s.SetClipboard([]byte("Enjoy your new clipboard content!"))
case '2':
s.GetClipboard()
}
case tcell.KeyEscape:
s.Fini()
os.Exit(0)
}
case *tcell.EventClipboard:
clipboard = ev.Data()
displayHelloWorld(s)
}
}
}
|
