Initial commit

win/rfb_win32/WMPoller.cxx

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+/* 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.
+ */
+
+// -=- WMPoller.cxx
+
+#include <rfb_win32/WMPoller.h>
+#include <rfb/Exception.h>
+#include <rfb/LogWriter.h>
+#include <rfb/Configuration.h>
+
+#include <tchar.h>
+
+using namespace rfb;
+using namespace rfb::win32;
+
+static LogWriter vlog("WMPoller");
+
+BoolParameter rfb::win32::WMPoller::poll_console_windows("PollConsoleWindows",
+  "Server should poll console windows for updates", true);
+
+// -=- WMPoller class
+
+bool
+rfb::win32::WMPoller::processEvent() {
+  PollInfo info;
+  if (poll_console_windows && ut) {
+    ::EnumWindows(WMPoller::enumWindowProc, (LPARAM) &info);
+    ut->add_changed(info.poll_include);
+  }
+  return false;
+}
+
+bool
+rfb::win32::WMPoller::setUpdateTracker(UpdateTracker* ut_) {
+  ut = ut_;
+  return true;
+}
+
+bool
+rfb::win32::WMPoller::checkPollWindow(HWND w) {
+  TCHAR buffer[128];
+  if (!GetClassName(w, buffer, 128))
+    throw rdr::SystemException("unable to get window class:%u", GetLastError());
+  if ((_tcscmp(buffer, _T("tty")) != 0) &&
+    (_tcscmp(buffer, _T("ConsoleWindowClass")) != 0)) {
+    return false;
+  }
+  return true;
+}
+
+void
+rfb::win32::WMPoller::pollWindow(HWND w, PollInfo* i) {
+  RECT r;
+  if (IsWindowVisible(w) && GetWindowRect(w, &r)) {
+    if (IsRectEmpty(&r)) return;
+    Region wrgn(Rect(r.left, r.top, r.right, r.bottom));
+    if (checkPollWindow(w)) {
+      wrgn.assign_subtract(i->poll_exclude);
+      i->poll_include.assign_union(wrgn);
+    } else {
+      i->poll_exclude.assign_union(wrgn);
+    }
+  }
+}
+
+BOOL CALLBACK
+rfb::win32::WMPoller::enumWindowProc(HWND w, LPARAM lp) {
+  pollWindow(w, (PollInfo*)lp);
+  return TRUE;
+}