116 lines
2.5 KiB
Go
116 lines
2.5 KiB
Go
package zenity
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import (
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"runtime"
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"syscall"
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"unsafe"
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"github.com/ncruces/zenity/internal/zenutil"
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)
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var (
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shellNotifyIcon = shell32.NewProc("Shell_NotifyIconW")
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wtsSendMessage = wtsapi32.NewProc("WTSSendMessageW")
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)
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func notify(text string, opts options) error {
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if opts.ctx != nil && opts.ctx.Err() != nil {
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return opts.ctx.Err()
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}
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var args _NOTIFYICONDATA
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args.StructSize = uint32(unsafe.Sizeof(args))
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args.ID = 0x378eb49c // random
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args.Flags = 0x00000010 // NIF_INFO
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args.State = 0x00000001 // NIS_HIDDEN
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info := syscall.StringToUTF16(text)
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copy(args.Info[:len(args.Info)-1], info)
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if opts.title != nil {
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title := syscall.StringToUTF16(*opts.title)
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copy(args.InfoTitle[:len(args.InfoTitle)-1], title)
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}
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switch opts.icon {
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case InfoIcon:
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args.InfoFlags |= 0x1 // NIIF_INFO
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case WarningIcon:
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args.InfoFlags |= 0x2 // NIIF_WARNING
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case ErrorIcon:
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args.InfoFlags |= 0x3 // NIIF_ERROR
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}
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runtime.LockOSThread()
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defer runtime.UnlockOSThread()
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s, _, err := shellNotifyIcon.Call(0 /* NIM_ADD */, uintptr(unsafe.Pointer(&args)))
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if s == 0 {
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if errno, ok := err.(syscall.Errno); ok && errno == 0 {
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return wtsMessage(text, opts)
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}
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return err
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}
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shellNotifyIcon.Call(2 /* NIM_DELETE */, uintptr(unsafe.Pointer(&args)))
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return nil
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}
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func wtsMessage(text string, opts options) error {
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var flags uintptr
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switch opts.icon {
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case ErrorIcon:
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flags |= 0x10 // MB_ICONERROR
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case QuestionIcon:
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flags |= 0x20 // MB_ICONQUESTION
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case WarningIcon:
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flags |= 0x30 // MB_ICONWARNING
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case InfoIcon:
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flags |= 0x40 // MB_ICONINFORMATION
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}
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title := opts.title
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if title == nil {
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title = stringPtr("Notification")
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}
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timeout := zenutil.Timeout
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if timeout == 0 {
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timeout = 10
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}
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ptext := syscall.StringToUTF16(text)
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ptitle := syscall.StringToUTF16(*title)
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var res uint32
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s, _, err := wtsSendMessage.Call(
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0, // WTS_CURRENT_SERVER_HANDLE
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0xffffffff, // WTS_CURRENT_SESSION
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uintptr(unsafe.Pointer(&ptitle[0])), uintptr(2*len(ptitle)),
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uintptr(unsafe.Pointer(&ptext[0])), uintptr(2*len(ptext)),
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flags, uintptr(timeout), uintptr(unsafe.Pointer(&res)), 0)
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if s == 0 {
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return err
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}
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return nil
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}
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type _NOTIFYICONDATA struct {
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StructSize uint32
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Owner uintptr
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ID uint32
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Flags uint32
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CallbackMessage uint32
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Icon uintptr
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Tip [128]uint16
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State uint32
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StateMask uint32
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Info [256]uint16
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Version uint32
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InfoTitle [64]uint16
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InfoFlags uint32
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// GuidItem [16]byte
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// BalloonIcon uintptr
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}
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