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|
//go:build darwin || freebsd || linux || netbsd || openbsd || zos
package vaxis
import (
"fmt"
"io"
"os/signal"
"syscall"
"time"
"git.sr.ht/~rockorager/vaxis/log"
"golang.org/x/sys/unix"
)
func (vx *Vaxis) setupSignals() {
if !vx.caps.inBandResize {
signal.Notify(vx.chSigWinSz,
syscall.SIGWINCH,
)
}
signal.Notify(vx.chSigKill,
// kill signals
syscall.SIGABRT,
syscall.SIGBUS,
syscall.SIGFPE,
syscall.SIGILL,
syscall.SIGINT,
syscall.SIGQUIT,
syscall.SIGSEGV,
syscall.SIGTERM,
)
}
// reportWinsize
func (vx *Vaxis) reportWinsize() (Resize, error) {
if vx.caps.inBandResize {
// We already received the size if we have in band reports
vx.mu.Lock()
defer vx.mu.Unlock()
return vx.nextSize, nil
}
if vx.xtwinops && vx.caps.reportSizeChars && vx.caps.reportSizePixels {
log.Trace("requesting screen size from terminal")
io.WriteString(vx.console, textAreaSize)
deadline := time.NewTimer(100 * time.Millisecond)
select {
case <-deadline.C:
return Resize{}, fmt.Errorf("screen size request deadline exceeded")
case <-vx.chSizeDone:
vx.mu.Lock()
defer vx.mu.Unlock()
return vx.nextSize, nil
}
}
log.Trace("requesting screen size from ioctl")
ws, err := unix.IoctlGetWinsize(int(vx.console.Fd()), unix.TIOCGWINSZ)
if err != nil {
cws, err := vx.console.Size()
if err == nil {
return Resize{
Cols: int(cws.Width),
Rows: int(cws.Height),
}, nil
}
return Resize{}, err
}
return Resize{
Cols: int(ws.Col),
Rows: int(ws.Row),
XPixel: int(ws.Xpixel),
YPixel: int(ws.Ypixel),
}, nil
}
|
