mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-11-22 16:13:13 +01:00
104 lines
3.1 KiB
C++
104 lines
3.1 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
|
|
*
|
|
* This is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This software is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this software; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
* USA.
|
|
*/
|
|
|
|
#include <rfb_win32/EventManager.h>
|
|
#include <rdr/Exception.h>
|
|
#include <rfb/LogWriter.h>
|
|
|
|
using namespace rfb;
|
|
using namespace rfb::win32;
|
|
|
|
static LogWriter vlog("EventManager");
|
|
|
|
|
|
EventManager::EventManager() : eventCount(0) {
|
|
}
|
|
|
|
EventManager::~EventManager() {
|
|
}
|
|
|
|
|
|
bool EventManager::addEvent(HANDLE event, EventHandler* ecb) {
|
|
if (eventCount >= MAXIMUM_WAIT_OBJECTS-1)
|
|
return false;
|
|
events[eventCount] = event;
|
|
handlers[eventCount] = ecb;
|
|
eventCount++;
|
|
return true;
|
|
}
|
|
|
|
void EventManager::removeEvent(HANDLE event) {
|
|
for (unsigned int i=0; i<eventCount; i++) {
|
|
if (events[i] == event) {
|
|
for (unsigned int j=i; j<eventCount-1; j++) {
|
|
events[j] = events[j+1];
|
|
handlers[j] = handlers[j+1];
|
|
}
|
|
eventCount--;
|
|
return;
|
|
}
|
|
}
|
|
throw rdr::Exception("Event not registered");
|
|
}
|
|
|
|
|
|
int EventManager::checkTimeouts() {
|
|
return 0;
|
|
}
|
|
|
|
BOOL EventManager::getMessage(MSG* msg, HWND hwnd, UINT minMsg, UINT maxMsg) {
|
|
while (true) {
|
|
// - Process any pending timeouts
|
|
DWORD timeout = checkTimeouts();
|
|
if (timeout == 0)
|
|
timeout = INFINITE;
|
|
|
|
// - Events take precedence over messages
|
|
DWORD result;
|
|
if (eventCount) {
|
|
// - Check whether any events are set
|
|
result = WaitForMultipleObjects(eventCount, events, FALSE, 0);
|
|
if (result == WAIT_TIMEOUT) {
|
|
// - No events are set, so check for messages
|
|
if (PeekMessage(msg, hwnd, minMsg, maxMsg, PM_REMOVE))
|
|
return msg->message != WM_QUIT;
|
|
|
|
// - Block waiting for an event to be set, or a message
|
|
result = MsgWaitForMultipleObjects(eventCount, events, FALSE, timeout,
|
|
QS_ALLINPUT);
|
|
if (result == WAIT_OBJECT_0 + eventCount) {
|
|
// - Return the message, if any
|
|
if (PeekMessage(msg, hwnd, minMsg, maxMsg, PM_REMOVE))
|
|
return msg->message != WM_QUIT;
|
|
continue;
|
|
}
|
|
}
|
|
} else
|
|
return GetMessage(msg, hwnd, minMsg, maxMsg);
|
|
|
|
if ((result >= WAIT_OBJECT_0) && (result < (WAIT_OBJECT_0 + eventCount))) {
|
|
// - An event was set - call the handler
|
|
int index = result - WAIT_OBJECT_0;
|
|
handlers[index]->processEvent(events[index]);
|
|
} else if (result == WAIT_FAILED) {
|
|
// - An error has occurred, so return the error status code
|
|
return -1;
|
|
}
|
|
}
|
|
}
|