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fixes gdamore#356 Vim cursors shapes?
This adds a new method, SetCursorStyle() to the screen API. It also automatically restores the cursor when disengaging to the default cursor. Modern terminals (and Windows console) support this.
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// +build ignore | ||
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// Copyright 2021 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. | ||
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// beep makes a beep every second until you press ESC | ||
package main | ||
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import ( | ||
"fmt" | ||
"github.com/gdamore/tcell/v2" | ||
"os" | ||
) | ||
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func main() { | ||
tcell.SetEncodingFallback(tcell.EncodingFallbackASCII) | ||
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) | ||
} | ||
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s.SetStyle(tcell.StyleDefault) | ||
s.Clear() | ||
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s.SetCell(2, 2, tcell.StyleDefault, '0') | ||
s.SetCursorStyle(tcell.CursorStyleDefault) | ||
s.ShowCursor(3, 2) | ||
quit := make(chan struct{}) | ||
style := tcell.StyleDefault | ||
go func() { | ||
for { | ||
ev := s.PollEvent() | ||
switch ev := ev.(type) { | ||
case *tcell.EventKey: | ||
switch ev.Key() { | ||
case tcell.KeyRune: | ||
switch ev.Rune() { | ||
case '0': | ||
s.SetContent(2, 2, '0', nil, style) | ||
s.SetCursorStyle(tcell.CursorStyleDefault) | ||
case '1': | ||
s.SetContent(2, 2, '1', nil, style) | ||
s.SetCursorStyle(tcell.CursorStyleBlinkingBlock) | ||
case '2': | ||
s.SetCell(2, 2, tcell.StyleDefault, '2') | ||
s.SetCursorStyle(tcell.CursorStyleSteadyBlock) | ||
case '3': | ||
s.SetCell(2, 2, tcell.StyleDefault, '3') | ||
s.SetCursorStyle(tcell.CursorStyleBlinkingUnderline) | ||
case '4': | ||
s.SetCell(2, 2, tcell.StyleDefault, '4') | ||
s.SetCursorStyle(tcell.CursorStyleSteadyUnderline) | ||
case '5': | ||
s.SetCell(2, 2, tcell.StyleDefault, '5') | ||
s.SetCursorStyle(tcell.CursorStyleBlinkingBar) | ||
case '6': | ||
s.SetCell(2, 2, tcell.StyleDefault, '6') | ||
s.SetCursorStyle(tcell.CursorStyleSteadyBar) | ||
} | ||
s.Show() | ||
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case tcell.KeyEscape, tcell.KeyEnter, tcell.KeyCtrlC: | ||
close(quit) | ||
return | ||
case tcell.KeyCtrlL: | ||
s.Sync() | ||
} | ||
case *tcell.EventResize: | ||
s.Sync() | ||
} | ||
} | ||
}() | ||
<-quit | ||
s.Fini() | ||
} |
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