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- /* Copyright (C) 2002-2003 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
-
- rfb::win32::WMPoller::WMPoller() : clipper(0) {
- }
-
- rfb::win32::WMPoller::~WMPoller() {
- if (clipper) delete clipper;
- }
-
- bool
- rfb::win32::WMPoller::processEvent() {
- PollInfo info;
- if (clipper && poll_console_windows) {
- ::EnumWindows(WMPoller::enumWindowProc, (LPARAM) &info);
- clipper->add_changed(info.poll_include);
- }
- return false;
- }
-
- bool
- rfb::win32::WMPoller::setClipRect(const Rect& r) {
- clip_region = r;
- if (clipper) clipper->set_clip_region(clip_region);
- return true;
- }
-
- bool
- rfb::win32::WMPoller::setUpdateTracker(UpdateTracker* ut) {
- if (clipper) delete clipper;
- clipper = new ClippedUpdateTracker(*ut);
- clipper->set_clip_region(clip_region);
- 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;
- }
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