Merge pull request #130 from winhung/limit-scrolling
scrolling does not go beyond the displayed text #31pull/155/head
Jesse Duffield
5 years ago
committed by
GitHub
commit
6ebddea76e
@ -0,0 +1,61 @@
|
||||
// +build !windows
|
||||
|
||||
package gocui
|
||||
|
||||
import (
|
||||
"os"
|
||||
"os/signal"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
|
||||
"github.com/go-errors/errors"
|
||||
)
|
||||
|
||||
type windowSize struct {
|
||||
rows uint16
|
||||
cols uint16
|
||||
xpixels uint16
|
||||
ypixels uint16
|
||||
}
|
||||
|
||||
// getTermWindowSize is get terminal window size on linux or unix.
|
||||
// When gocui run inside the docker contaienr need to check and get the window size.
|
||||
func (g *Gui) getTermWindowSize() (int, int, error) {
|
||||
out, err := os.OpenFile("/dev/tty", os.O_RDWR, 0)
|
||||
if err != nil {
|
||||
return 0, 0, err
|
||||
}
|
||||
defer out.Close()
|
||||
|
||||
signalCh := make(chan os.Signal, 1)
|
||||
signal.Notify(signalCh, syscall.SIGWINCH, syscall.SIGINT)
|
||||
defer signal.Stop(signalCh)
|
||||
|
||||
var sz windowSize
|
||||
|
||||
for {
|
||||
_, _, err = syscall.Syscall(
|
||||
syscall.SYS_IOCTL,
|
||||
out.Fd(),
|
||||
uintptr(syscall.TIOCGWINSZ),
|
||||
uintptr(unsafe.Pointer(&sz)),
|
||||
)
|
||||
|
||||
// check terminal window size
|
||||
if sz.cols > 0 && sz.rows > 0 {
|
||||
return int(sz.cols), int(sz.rows), nil
|
||||
}
|
||||
|
||||
select {
|
||||
case signal := <-signalCh:
|
||||
switch signal {
|
||||
// when the terminal window size is changed
|
||||
case syscall.SIGWINCH:
|
||||
continue
|
||||
// ctrl + c to cancel
|
||||
case syscall.SIGINT:
|
||||
return 0, 0, errors.New("There was not enough window space to start the application")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,10 @@
|
||||
// +build windows
|
||||
|
||||
package gocui
|
||||
|
||||
import "github.com/jesseduffield/termbox-go"
|
||||
|
||||
func (g *Gui) getTermWindowSize() (int, int, error) {
|
||||
x, y := termbox.Size()
|
||||
return x, y, nil
|
||||
}
|
||||
Loading…
Reference in New Issue