private void runLinux(Control control)
{
this.mainControl = control;
if (userCanvasSize.IsEmpty)
{
// Create physical canvas with actual terminal size
winsize ws = Libc.GetTerminalSize(isDarwin);
canvas = new PhysicalCanvas(ws.ws_col, ws.ws_row);
}
else
{
canvas = new PhysicalCanvas(userCanvasSize.Width, userCanvasSize.Height);
}
renderer.Canvas = canvas;
renderer.RootElementRect = userRootElementRect.IsEmpty
? new Rect(canvas.Size) : userRootElementRect;
renderer.RootElement = mainControl;
//
mainControl.Invalidate();
// Terminal initialization sequence
// This is magic workaround to avoid messing up terminal after program finish
// The bug is described at https://bugzilla.xamarin.com/show_bug.cgi?id=15118
bool ignored = Console.KeyAvailable;
IntPtr stdscr = NCurses.initscr();
NCurses.cbreak();
NCurses.noecho();
NCurses.nonl();
NCurses.intrflush(stdscr, false);
NCurses.keypad(stdscr, true);
NCurses.start_color();
HideCursor();
try {
renderer.UpdateLayout( );
renderer.FinallyApplyChangesToCanvas( );
termkeyHandle = LibTermKey.termkey_new(0, TermKeyFlag.TERMKEY_FLAG_SPACESYMBOL);
// Setup the input mode
Console.Write("\x1B[?1002h");
pollfd fd = new pollfd( );
fd.fd = 0;
fd.events = POLL_EVENTS.POLLIN;
pollfd[] fds = new pollfd[2];
fds[0] = fd;
fds[1] = new pollfd( );
int pipeResult = Libc.pipe(pipeFds);
if (pipeResult == -1)
{
throw new InvalidOperationException("Cannot create self-pipe.");
}
fds[1].fd = pipeFds[0];
fds[1].events = POLL_EVENTS.POLLIN;
try {
#if !WIN32
// Catch SIGWINCH to handle terminal resizing
UnixSignal[] signals = new UnixSignal [] {
new UnixSignal(Signum.SIGWINCH)
};
Thread signal_thread = new Thread(delegate() {
while (true)
{
// Wait for a signal to be delivered
int index = UnixSignal.WaitAny(signals, -1);
Signum signal = signals [index].Signum;
Libc.writeInt64(pipeFds[1], 2);
}
}
);
signal_thread.IsBackground = false;
signal_thread.Start();
#endif
TermKeyKey key = new TermKeyKey( );
//
this.running = true;
this.mainThreadId = Thread.CurrentThread.ManagedThreadId;
//
int nextwait = -1;
while (true)
{
int pollRes = Libc.poll(fds, 2, nextwait);
if (pollRes == 0)
{
if (nextwait == -1)
{
throw new InvalidOperationException("Assertion failed.");
}
if (TermKeyResult.TERMKEY_RES_KEY == LibTermKey.termkey_getkey_force(termkeyHandle, ref key))
{
processLinuxInput(key);
}
}
if (pollRes == -1)
{
int errorCode = Marshal.GetLastWin32Error();
if (errorCode != Libc.EINTR)
{
throw new InvalidOperationException(string.Format("poll() returned with error code {0}", errorCode));
}
}
if (fds[1].revents != POLL_EVENTS.NONE)
{
UInt64 u;
Libc.readInt64(fds[1].fd, out u);
if (u == 1)
{
// Exit from application
#if !WIN32
signal_thread.Abort();
#endif
break;
}
if (u == 2)
{
// Get new term size and process appropriate INPUT_RECORD event
INPUT_RECORD inputRecord = new INPUT_RECORD( );
inputRecord.EventType = EventType.WINDOW_BUFFER_SIZE_EVENT;
winsize ws = Libc.GetTerminalSize(isDarwin);
inputRecord.WindowBufferSizeEvent.dwSize.X = ( short )ws.ws_col;
inputRecord.WindowBufferSizeEvent.dwSize.Y = ( short )ws.ws_row;
processInputEvent(inputRecord);
}
if (u == 3)
{
// It is signal from async actions invocation stuff
}
}
if ((fds[0].revents & POLL_EVENTS.POLLIN) == POLL_EVENTS.POLLIN ||
(fds[0].revents & POLL_EVENTS.POLLHUP) == POLL_EVENTS.POLLHUP ||
(fds[0].revents & POLL_EVENTS.POLLERR) == POLL_EVENTS.POLLERR)
{
LibTermKey.termkey_advisereadable(termkeyHandle);
}
TermKeyResult result = (LibTermKey.termkey_getkey(termkeyHandle, ref key));
while (result == TermKeyResult.TERMKEY_RES_KEY)
{
processLinuxInput(key);
result = (LibTermKey.termkey_getkey(termkeyHandle, ref key));
}
if (result == TermKeyResult.TERMKEY_RES_AGAIN)
{
nextwait = LibTermKey.termkey_get_waittime(termkeyHandle);
}
else
{
nextwait = -1;
}
while (true)
{
bool anyInvokeActions = isAnyInvokeActions( );
bool anyRoutedEvent = !EventManager.IsQueueEmpty( );
bool anyLayoutToRevalidate = renderer.AnyControlInvalidated;
if (!anyInvokeActions && !anyRoutedEvent && !anyLayoutToRevalidate)
{
break;
}
EventManager.ProcessEvents();
processInvokeActions( );
renderer.UpdateLayout( );
}
renderer.FinallyApplyChangesToCanvas( );
}
} finally {
LibTermKey.termkey_destroy(termkeyHandle);
Libc.close(pipeFds[0]);
Libc.close(pipeFds[1]);
Console.Write("\x1B[?1002l");
}
} finally {
// Restore cursor visibility before exit
ShowCursor( );
NCurses.endwin( );
}
renderer.RootElement = null;
}
public static void Main(string[] args)
{
Thread thread = new Thread(new ThreadStart(() => {
Thread.Sleep(TimeSpan.FromSeconds(5));
Console.WriteLine("Message from thread");
int res = LibTermKey.writeInt64(eventfd, 1);
Console.WriteLine("write(1) returned {0}\n", res);
if (res == -1)
{
int lastError = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
Console.WriteLine("Last error is {0}\n", lastError);
}
}));
thread.IsBackground = true;
thread.Start();
IntPtr handle = LibTermKey.termkey_new(0, TermKeyFlag.TERMKEY_FLAG_SPACESYMBOL);
Console.Write("\x1B[?1002h");
pollfd fd = new pollfd();
fd.fd = 0;
fd.events = POLL_EVENTS.POLLIN;
pollfd[] fds = new pollfd[2];
fds[0] = fd;
fds[1] = new pollfd();
eventfd = LibTermKey.eventfd(0, EVENTFD_FLAGS.EFD_CLOEXEC);
if (eventfd == -1)
{
Console.WriteLine("Cannot create eventfd\n");
int lastError = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
Console.WriteLine("Last error is {0}\n", lastError);
}
fds[1].fd = eventfd;
fds[1].events = POLL_EVENTS.POLLIN;
TermKeyKey key = new TermKeyKey();
while (true)
{
int pollRes = LibTermKey.poll(fds, 2, -1);
if (0 == pollRes)
{
// timed out
Console.WriteLine("Timed out");
if (LibTermKey.termkey_getkey_force(handle, ref key) == TermKeyResult.TERMKEY_RES_KEY)
{
Console.WriteLine("got TERMKEY_RES_KEY");
}
}
else if (-1 == pollRes)
{
int errorCode = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
Console.WriteLine(string.Format("ErrorCode = {0}", errorCode));
}
Console.WriteLine(string.Format("PollRes is {0}", pollRes));
for (int i = 0; i < 2; i++)
{
if (fds[i].revents != POLL_EVENTS.NONE)
{
if (i == 1)
{
UInt64 u;
LibTermKey.readInt64(fds[i].fd, out u);
Console.WriteLine("Readed eventfd counter : {0}\n", u);
}
}
}
if ((fds[0].revents & POLL_EVENTS.POLLIN) == POLL_EVENTS.POLLIN ||
(fds[0].revents & POLL_EVENTS.POLLHUP) == POLL_EVENTS.POLLHUP ||
(fds[0].revents & POLL_EVENTS.POLLERR) == POLL_EVENTS.POLLERR)
{
// todo : log return value
LibTermKey.termkey_advisereadable(handle);
}
TermKeyResult result;
while ((result = LibTermKey.termkey_getkey(handle, ref key)) == TermKeyResult.TERMKEY_RES_KEY)
{
Console.WriteLine("Received some key.");
string descr = String.Format("Type : {0} Modifiers: {1} Utf8 bytes: {2}{3}{4}{5}{6}{7}{8}",
key.type, key.modifiers, key.utf8_0,
key.utf8_1, key.utf8_2, key.utf8_3,
key.utf8_4, key.utf8_5, key.utf8_6);
//dump the retrieved structure
//byte[] buffer = new byte[30];
//IntPtr nativeBuffer = System.Runtime.InteropServices.Marshal.AllocHGlobal(30);
//System.Runtime.InteropServices.Marshal.StructureToPtr(key, nativeBuffer, false);
//System.Runtime.InteropServices.Marshal.Copy(nativeBuffer, buffer, 0, 30);
//for (int i = 0; i < 30; i++ ) {
// Console.Write("{0} ", buffer[i]);
// if ((i + 1) % 10 == 0)
// Console.WriteLine();
//}
//System.Runtime.InteropServices.Marshal.FreeHGlobal(nativeBuffer);
Console.WriteLine(descr);
if (key.type == TermKeyType.TERMKEY_TYPE_UNICODE)
{
byte[] data = new byte[7];
data[0] = key.utf8_0;
data[1] = key.utf8_1;
data[2] = key.utf8_2;
data[3] = key.utf8_3;
data[4] = key.utf8_4;
data[5] = key.utf8_5;
data[6] = key.utf8_6;
string d = System.Text.Encoding.UTF8.GetString(data);
Console.WriteLine(String.Format("Unicode symbol : {0}", d));
}
else if (key.type == TermKeyType.TERMKEY_TYPE_MOUSE)
{
TermKeyMouseEvent ev;
int button;
int line, col;
LibTermKey.termkey_interpret_mouse(handle, ref key, out ev, out button, out line, out col);
Console.WriteLine("MouseEvent : {0} (button {1}) at {2}:{3}", ev, button, line, col);
}
}
}
LibTermKey.termkey_destroy(handle);
LibTermKey.close(eventfd);
}