scrnsaver

README

scrnsaver

Calls XScreenSaverQueryInfo() (X11/extensions/scrnsaver.h) and provides XScreenSaverInfo (man 3 XScreenSaverInfo).

type XID uint64

type ScreenSaverKind int

const (
	Blanked ScreenSaverKind = iota
	Internal
	External
)

type ScreenSaverState int

const (
	Off ScreenSaverState = iota
	On
	Disabled
)

type XScreenSaverInfo struct {
	// screen saver info
	Window XID
	// ScreenSaver{Off,On,Disabled}
	State ScreenSaverState
	// ScreenSaver{Blanked,Internal,External}
	Kind ScreenSaverKind
	// Milliseconds
	Til_or_since time.Duration // uint64
	// Milliseconds
	Idle time.Duration //uint64
	// Events
	EventMask uint64
}

The XScreenSaverInfo.Idle field contains the idle time as time.Duration.

Usage

package main

import (
	"github.com/JelmerDeHen/scrnsaver"
	"fmt"
)

func main() {
	info, err := scrnsaver.GetXScreenSaverInfo()
	if err != nil {
		panic(err)
	}

	fmt.Printf("User is idle for %dms\n", info.Idle.Milliseconds())
}

Perform action based on idle time:

package main

import (
        "github.com/JelmerDeHen/scrnsaver"
        "fmt"
        "time"
)

func main() {
        for {
                info, err := scrnsaver.GetXScreenSaverInfo()
                if err != nil {
                        panic(err)
                }

                fmt.Printf("User is idle for %dms\n", info.Idle.Milliseconds())

                if info.Idle > time.Second*5 {
                        fmt.Println("User is idle")
                }

                if info.Idle < time.Second*5 {
                        fmt.Println("User is present")
                }

                time.Sleep(time.Second)
        }
}

Resolution can be obtained using GetResolution().

Documentation

Index

• func DisplayHeight() int
• func DisplayWidth() int
• func GetResolution() string
• func HasXorg() bool
• type ScreenSaverKind
• type ScreenSaverState
• type XID
• type XScreenSaverInfo
  • func GetXScreenSaverInfo() (xscreensaverinfo *XScreenSaverInfo, err error)

Functions

func DisplayHeight

func DisplayHeight() int

func DisplayWidth

func DisplayWidth() int

func GetResolution

func GetResolution() string

func HasXorg

func HasXorg() bool

Types

type ScreenSaverKind

type ScreenSaverKind int

const (
	Blanked ScreenSaverKind = iota
	Internal
	External
)

type ScreenSaverState

type ScreenSaverState int

const (
	Off ScreenSaverState = iota
	On
	Disabled
)

type XID

type XID uint64

type XScreenSaverInfo

type XScreenSaverInfo struct {
	// screen saver info
	Window XID
	// ScreenSaver{Off,On,Disabled}
	State ScreenSaverState
	// ScreenSaver{Blanked,Internal,External}
	Kind ScreenSaverKind
	// Milliseconds
	Til_or_since time.Duration // uint64
	// Milliseconds
	Idle time.Duration //uint64
	// Events
	EventMask uint64
}

func GetXScreenSaverInfo

func GetXScreenSaverInfo() (xscreensaverinfo *XScreenSaverInfo, err error)