private void runWindows(Control control)
{
this.mainControl = control;
//
stdInputHandle = Win32.GetStdHandle(StdHandleType.STD_INPUT_HANDLE);
stdOutputHandle = Win32.GetStdHandle(StdHandleType.STD_OUTPUT_HANDLE);
IntPtr[] handles = new[] {
exitWaitHandle.SafeWaitHandle.DangerousGetHandle(),
stdInputHandle,
invokeWaitHandle.SafeWaitHandle.DangerousGetHandle( )
};
// Set console mode to enable mouse and window resizing events
const uint ENABLE_WINDOW_INPUT = 0x0008;
const uint ENABLE_MOUSE_INPUT = 0x0010;
uint consoleMode;
Win32.GetConsoleMode(stdInputHandle, out consoleMode);
Win32.SetConsoleMode(stdInputHandle, consoleMode | ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT);
// Get console screen buffer size
CONSOLE_SCREEN_BUFFER_INFO screenBufferInfo;
Win32.GetConsoleScreenBufferInfo(stdOutputHandle, out screenBufferInfo);
// Set Canvas size to current console window size (not to whole buffer size)
savedWindowRect = new Rect(new Point(Console.WindowLeft, Console.WindowTop),
new Size(Console.WindowWidth, Console.WindowHeight));
CanvasSize = new Size(savedWindowRect.Width, savedWindowRect.Height);
canvas = userCanvasSize.IsEmpty
? new PhysicalCanvas(screenBufferInfo.dwSize.X, screenBufferInfo.dwSize.Y, stdOutputHandle)
: new PhysicalCanvas(userCanvasSize.Width, userCanvasSize.Height, stdOutputHandle);
renderer.Canvas = canvas;
// Fill the canvas by default
renderer.RootElementRect = userRootElementRect.IsEmpty
? new Rect(new Point(0, 0), canvas.Size) : userRootElementRect;
renderer.RootElement = mainControl;
//
mainControl.Invalidate();
renderer.UpdateLayout();
renderer.FinallyApplyChangesToCanvas( );
// Initially hide the console cursor
HideCursor();
this.running = true;
this.mainThreadId = Thread.CurrentThread.ManagedThreadId;
//
while (true)
{
// 100 ms instead of Win32.INFINITE to check console window Zoomed and Iconic
// state periodically (because if user presses Maximize/Restore button
// there are no input event generated).
uint waitResult = Win32.WaitForMultipleObjects(3, handles, false, 100);
if (waitResult == 0)
{
break;
}
if (waitResult == 1)
{
processInput();
}
if (waitResult == 2)
{
// Do nothing special - because invokeActions will be invoked in loop anyway
}
// If we received WAIT_TIMEOUT - check window Zoomed and Iconic state
// and correct buffer size and console window size
if (waitResult == 0x00000102)
{
IntPtr consoleWindow = getConsoleWindowHwnd( );
bool isZoomed = Win32.IsZoomed(consoleWindow);
bool isIconic = Win32.IsIconic(consoleWindow);
if (maximized != isZoomed && !isIconic)
{
if (isZoomed)
{
Maximize();
}
else
{
Restore();
}
}
if (!maximized)
{
savedWindowRect = new Rect(new Point(Console.WindowLeft, Console.WindowTop),
new Size(Console.WindowWidth, Console.WindowHeight));
}
}
// WAIT_FAILED
if (waitResult == 0xFFFFFFFF)
{
throw new InvalidOperationException("Invalid wait result of WaitForMultipleObjects.");
}
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( );
}
// Restore cursor visibility before exit
ShowCursor();
// Restore console mode before exit
Win32.SetConsoleMode(stdInputHandle, consoleMode);
renderer.RootElement = null;
// todo : restore attributes of console output
}
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;
}