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-rw-r--r--unix/vncviewer/CConn.cxx749
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diff --git a/unix/vncviewer/CConn.cxx b/unix/vncviewer/CConn.cxx
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+++ b/unix/vncviewer/CConn.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.
+ */
+//
+// CConn.cxx
+//
+
+#include <unistd.h>
+#include "CConn.h"
+#include <rfb/CMsgWriter.h>
+#include <rfb/encodings.h>
+#include <rfb/secTypes.h>
+#include <rfb/CSecurityNone.h>
+#include <rfb/CSecurityVncAuth.h>
+#include <rfb/Hostname.h>
+#include <rfb/LogWriter.h>
+#include <rfb/util.h>
+#include <rfb/Password.h>
+#include <network/TcpSocket.h>
+
+#include "TXViewport.h"
+#include "DesktopWindow.h"
+#include "ServerDialog.h"
+#include "PasswdDialog.h"
+#include "parameters.h"
+
+using namespace rfb;
+
+static rfb::LogWriter vlog("CConn");
+
+IntParameter debugDelay("DebugDelay","Milliseconds to display inverted "
+ "pixel data - a debugging feature", 0);
+
+StringParameter menuKey("MenuKey", "The key which brings up the popup menu",
+ "F8");
+StringParameter windowName("name", "The X window name", "");
+
+CConn::CConn(Display* dpy_, int argc_, char** argv_, network::Socket* sock_,
+ char* vncServerName, bool reverse)
+ : dpy(dpy_), argc(argc_),
+ argv(argv_), serverHost(0), serverPort(0), sock(sock_), viewport(0),
+ desktop(0), desktopEventHandler(0),
+ currentEncoding(encodingZRLE), lastServerEncoding((unsigned int)-1),
+ fullColour(::fullColour),
+ autoSelect(::autoSelect), shared(::shared), formatChange(false),
+ encodingChange(false), sameMachine(false), fullScreen(::fullScreen),
+ ctrlDown(false), altDown(false),
+ menuKeysym(0), menu(dpy, this), options(dpy, this), about(dpy), info(dpy),
+ reverseConnection(reverse)
+{
+ CharArray menuKeyStr(menuKey.getData());
+ menuKeysym = XStringToKeysym(menuKeyStr.buf);
+
+ setShared(shared);
+ addSecType(secTypeNone);
+ addSecType(secTypeVncAuth);
+ CharArray encStr(preferredEncoding.getData());
+ int encNum = encodingNum(encStr.buf);
+ if (encNum != -1) {
+ currentEncoding = encNum;
+ }
+ cp.supportsDesktopResize = true;
+ cp.supportsLocalCursor = useLocalCursor;
+ cp.customCompressLevel = customCompressLevel;
+ cp.compressLevel = compressLevel;
+ cp.noJpeg = noJpeg;
+ cp.qualityLevel = qualityLevel;
+ initMenu();
+
+ if (sock) {
+ char* name = sock->getPeerEndpoint();
+ vlog.info("Accepted connection from %s", name);
+ if (name) free(name);
+ } else {
+ if (vncServerName) {
+ getHostAndPort(vncServerName, &serverHost, &serverPort);
+ } else {
+ ServerDialog dlg(dpy, &options, &about);
+ if (!dlg.show() || dlg.entry.getText()[0] == 0) {
+ exit(1);
+ }
+ getHostAndPort(dlg.entry.getText(), &serverHost, &serverPort);
+ }
+
+ sock = new network::TcpSocket(serverHost, serverPort);
+ vlog.info("connected to host %s port %d", serverHost, serverPort);
+ }
+
+ sameMachine = sock->sameMachine();
+ sock->inStream().setBlockCallback(this);
+ setServerName(sock->getPeerEndpoint());
+ setStreams(&sock->inStream(), &sock->outStream());
+ initialiseProtocol();
+}
+
+CConn::~CConn() {
+ free(serverHost);
+ delete desktop;
+ delete viewport;
+ delete sock;
+}
+
+// deleteWindow() is called when the user closes the desktop or menu windows.
+
+void CConn::deleteWindow(TXWindow* w) {
+ if (w == &menu) {
+ menu.unmap();
+ } else if (w == viewport) {
+ exit(1);
+ }
+}
+
+// handleEvent() filters all events on the desktop and menu. Most are passed
+// straight through. The exception is the F8 key. When pressed on the
+// desktop, it is used to bring up the menu. An F8 press or release on the
+// menu is passed through as if it were on the desktop.
+
+void CConn::handleEvent(TXWindow* w, XEvent* ev)
+{
+ KeySym ks;
+ char str[256];
+
+ switch (ev->type) {
+ case KeyPress:
+ case KeyRelease:
+ XLookupString(&ev->xkey, str, 256, &ks, NULL);
+ if (ks == menuKeysym && (ev->xkey.state & (ShiftMask|ControlMask)) == 0) {
+ if (w == desktop && ev->type == KeyPress) {
+ showMenu(ev->xkey.x_root, ev->xkey.y_root);
+ break;
+ } else if (w == &menu) {
+ if (ev->type == KeyPress) menu.unmap();
+ desktopEventHandler->handleEvent(w, ev);
+ break;
+ }
+ }
+ // drop through
+
+ default:
+ if (w == desktop) desktopEventHandler->handleEvent(w, ev);
+ else if (w == &menu) menuEventHandler->handleEvent(w, ev);
+ }
+}
+
+// blockCallback() is called when reading from the socket would block. We
+// process X events until the socket is ready for reading again.
+
+void CConn::blockCallback() {
+ fd_set rfds;
+ do {
+ struct timeval tv;
+ struct timeval* tvp = 0;
+
+ // Process any incoming X events
+ TXWindow::handleXEvents(dpy);
+
+ // Process expired timers and get the time until the next one
+ int timeoutMs = Timer::checkTimeouts();
+ if (timeoutMs) {
+ tv.tv_sec = timeoutMs / 1000;
+ tv.tv_usec = (timeoutMs % 1000) * 1000;
+ tvp = &tv;
+ }
+
+ // If there are X requests pending then poll, don't wait!
+ if (XPending(dpy)) {
+ tv.tv_usec = tv.tv_sec = 0;
+ tvp = &tv;
+ }
+
+ // Wait for X events, VNC traffic, or the next timer expiry
+ FD_ZERO(&rfds);
+ FD_SET(ConnectionNumber(dpy), &rfds);
+ FD_SET(sock->getFd(), &rfds);
+ int n = select(FD_SETSIZE, &rfds, 0, 0, tvp);
+ if (n < 0) throw rdr::SystemException("select",errno);
+ } while (!(FD_ISSET(sock->getFd(), &rfds)));
+}
+
+
+// getPasswd() is called by the CSecurity object when it needs us to read a
+// password from the user.
+
+void CConn::getUserPasswd(char** user, char** password)
+{
+ CharArray passwordFileStr(passwordFile.getData());
+ if (!user && passwordFileStr.buf[0]) {
+ FILE* fp = fopen(passwordFileStr.buf, "r");
+ if (!fp) throw rfb::Exception("Opening password file failed");
+ ObfuscatedPasswd obfPwd(256);
+ obfPwd.length = fread(obfPwd.buf, 1, obfPwd.length, fp);
+ fclose(fp);
+ PlainPasswd passwd(obfPwd);
+ *password = passwd.takeBuf();
+ return;
+ }
+
+ const char* secType = secTypeName(getCurrentCSecurity()->getType());
+ const char* titlePrefix = _("VNC authentication");
+ unsigned int titleLen = strlen(titlePrefix) + strlen(secType) + 4;
+ CharArray title(titleLen);
+ snprintf(title.buf, titleLen, "%s [%s]", titlePrefix, secType);
+ PasswdDialog dlg(dpy, title.buf, !user);
+ if (!dlg.show()) throw rfb::Exception("Authentication cancelled");
+ if (user)
+ *user = strDup(dlg.userEntry.getText());
+ *password = strDup(dlg.passwdEntry.getText());
+}
+
+
+// CConnection callback methods
+
+// getCSecurity() gets the appropriate CSecurity object for the security
+// types which we support.
+CSecurity* CConn::getCSecurity(int secType) {
+ switch (secType) {
+ case secTypeNone:
+ return new CSecurityNone();
+ case secTypeVncAuth:
+ return new CSecurityVncAuth(this);
+ default:
+ throw rfb::Exception("Unsupported secType?");
+ }
+}
+
+// serverInit() is called when the serverInit message has been received. At
+// this point we create the desktop window and display it. We also tell the
+// server the pixel format and encodings to use and request the first update.
+void CConn::serverInit() {
+ CConnection::serverInit();
+
+ // If using AutoSelect with old servers, start in FullColor
+ // mode. See comment in autoSelectFormatAndEncoding.
+ if (cp.beforeVersion(3, 8) && autoSelect) {
+ fullColour = true;
+ }
+
+ serverPF = cp.pf();
+ desktop = new DesktopWindow(dpy, cp.width, cp.height, serverPF, this);
+ desktopEventHandler = desktop->setEventHandler(this);
+ desktop->addEventMask(KeyPressMask | KeyReleaseMask);
+ fullColourPF = desktop->getPF();
+ if (!serverPF.trueColour)
+ fullColour = true;
+ recreateViewport();
+ formatChange = encodingChange = true;
+ requestNewUpdate();
+}
+
+// setDesktopSize() is called when the desktop size changes (including when
+// it is set initially).
+void CConn::setDesktopSize(int w, int h) {
+ CConnection::setDesktopSize(w,h);
+ if (desktop) {
+ desktop->resize(w, h);
+ recreateViewport();
+ }
+}
+
+// framebufferUpdateEnd() is called at the end of an update.
+// For each rectangle, the FdInStream will have timed the speed
+// of the connection, allowing us to select format and encoding
+// appropriately, and then request another incremental update.
+void CConn::framebufferUpdateEnd() {
+ if (debugDelay != 0) {
+ XSync(dpy, False);
+ struct timeval tv;
+ tv.tv_sec = debugDelay / 1000;
+ tv.tv_usec = (debugDelay % 1000) * 1000;
+ select(0, 0, 0, 0, &tv);
+ std::list<rfb::Rect>::iterator i;
+ for (i = debugRects.begin(); i != debugRects.end(); i++) {
+ desktop->invertRect(*i);
+ }
+ debugRects.clear();
+ }
+ desktop->framebufferUpdateEnd();
+ if (autoSelect)
+ autoSelectFormatAndEncoding();
+ requestNewUpdate();
+}
+
+// The rest of the callbacks are fairly self-explanatory...
+
+void CConn::setColourMapEntries(int firstColour, int nColours, rdr::U16* rgbs)
+{
+ desktop->setColourMapEntries(firstColour, nColours, rgbs);
+}
+
+void CConn::bell() { XBell(dpy, 0); }
+
+void CConn::serverCutText(const char* str, int len) {
+ desktop->serverCutText(str,len);
+}
+
+// We start timing on beginRect and stop timing on endRect, to
+// avoid skewing the bandwidth estimation as a result of the server
+// being slow or the network having high latency
+void CConn::beginRect(const Rect& r, unsigned int encoding)
+{
+ sock->inStream().startTiming();
+ if (encoding != encodingCopyRect) {
+ lastServerEncoding = encoding;
+ }
+}
+
+void CConn::endRect(const Rect& r, unsigned int encoding)
+{
+ sock->inStream().stopTiming();
+ if (debugDelay != 0) {
+ desktop->invertRect(r);
+ debugRects.push_back(r);
+ }
+}
+
+void CConn::fillRect(const rfb::Rect& r, rfb::Pixel p) {
+ desktop->fillRect(r,p);
+}
+void CConn::imageRect(const rfb::Rect& r, void* p) {
+ desktop->imageRect(r,p);
+}
+void CConn::copyRect(const rfb::Rect& r, int sx, int sy) {
+ desktop->copyRect(r,sx,sy);
+}
+void CConn::setCursor(int width, int height, const Point& hotspot,
+ void* data, void* mask) {
+ desktop->setCursor(width, height, hotspot, data, mask);
+}
+
+
+// Menu stuff - menuSelect() is called when the user selects a menu option.
+
+enum { ID_OPTIONS, ID_INFO, ID_FULLSCREEN, ID_REFRESH, ID_F8, ID_CTRLALTDEL,
+ ID_ABOUT, ID_DISMISS, ID_EXIT, ID_NEWCONN, ID_CTRL, ID_ALT };
+
+void CConn::initMenu() {
+ menuEventHandler = menu.setEventHandler(this);
+ menu.addEventMask(KeyPressMask | KeyReleaseMask);
+ menu.addEntry(_("Exit viewer"), ID_EXIT);
+ menu.addEntry(0, 0);
+ menu.addEntry(_("Full screen"), ID_FULLSCREEN);
+ menu.check(ID_FULLSCREEN, fullScreen);
+ menu.addEntry(0, 0);
+ menu.addEntry(_("Ctrl"), ID_CTRL);
+ menu.addEntry(_("Alt"), ID_ALT);
+ CharArray menuKeyStr(menuKey.getData());
+ CharArray sendMenuKey(64);
+ snprintf(sendMenuKey.buf, 64, _("Send %s"), menuKeyStr.buf);
+ menu.addEntry(sendMenuKey.buf, ID_F8);
+ menu.addEntry(_("Send Ctrl-Alt-Del"), ID_CTRLALTDEL);
+ menu.addEntry(0, 0);
+ menu.addEntry(_("Refresh screen"), ID_REFRESH);
+ menu.addEntry(0, 0);
+ menu.addEntry(_("New connection..."), ID_NEWCONN);
+ menu.addEntry(_("Options..."), ID_OPTIONS);
+ menu.addEntry(_("Connection info..."), ID_INFO);
+ menu.addEntry(_("About VNCviewer..."), ID_ABOUT);
+ menu.addEntry(0, 0);
+ menu.addEntry(_("Dismiss menu"), ID_DISMISS);
+ menu.toplevel(_("VNC Menu"), this);
+ menu.setBorderWidth(1);
+}
+
+void CConn::showMenu(int x, int y) {
+ menu.check(ID_FULLSCREEN, fullScreen);
+ if (x + menu.width() > viewport->width())
+ x = viewport->width() - menu.width();
+ if (y + menu.height() > viewport->height())
+ y = viewport->height() - menu.height();
+ menu.move(x, y);
+ menu.raise();
+ menu.map();
+}
+
+void CConn::menuSelect(long id, TXMenu* m) {
+ switch (id) {
+ case ID_NEWCONN:
+ {
+ menu.unmap();
+ if (fullScreen) {
+ fullScreen = false;
+ if (viewport) recreateViewport();
+ }
+ int pid = fork();
+ if (pid < 0) { perror("fork"); exit(1); }
+ if (pid == 0) {
+ delete sock;
+ close(ConnectionNumber(dpy));
+ struct timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = 200*1000;
+ select(0, 0, 0, 0, &tv);
+ execlp(programName, programName, 0);
+ perror("execlp"); exit(1);
+ }
+ break;
+ }
+ case ID_OPTIONS:
+ menu.unmap();
+ options.show();
+ break;
+ case ID_INFO:
+ {
+ menu.unmap();
+ char pfStr[100];
+ char spfStr[100];
+ cp.pf().print(pfStr, 100);
+ serverPF.print(spfStr, 100);
+ int secType = getCurrentCSecurity()->getType();
+ char infoText[1024];
+ snprintf(infoText, sizeof(infoText),
+ _("Desktop name: %.80s\n"
+ "Host: %.80s port: %d\n"
+ "Size: %d x %d\n"
+ "Pixel format: %s\n"
+ "(server default %s)\n"
+ "Requested encoding: %s\n"
+ "Last used encoding: %s\n"
+ "Line speed estimate: %d kbit/s\n"
+ "Protocol version: %d.%d\n"
+ "Security method: %s\n"),
+ cp.name(), serverHost, serverPort, cp.width, cp.height,
+ pfStr, spfStr, encodingName(currentEncoding),
+ encodingName(lastServerEncoding),
+ sock->inStream().kbitsPerSecond(),
+ cp.majorVersion, cp.minorVersion,
+ secTypeName(secType));
+ info.setText(infoText);
+ info.show();
+ break;
+ }
+ case ID_FULLSCREEN:
+ menu.unmap();
+ fullScreen = !fullScreen;
+ if (viewport) recreateViewport();
+ break;
+ case ID_REFRESH:
+ menu.unmap();
+ writer()->writeFramebufferUpdateRequest(Rect(0, 0, cp.width, cp.height),
+ false);
+ break;
+ case ID_F8:
+ menu.unmap();
+ if (!viewOnly) {
+ writer()->keyEvent(menuKeysym, true);
+ writer()->keyEvent(menuKeysym, false);
+ }
+ break;
+ case ID_CTRLALTDEL:
+ menu.unmap();
+ if (!viewOnly) {
+ writer()->keyEvent(XK_Control_L, true);
+ writer()->keyEvent(XK_Alt_L, true);
+ writer()->keyEvent(XK_Delete, true);
+ writer()->keyEvent(XK_Delete, false);
+ writer()->keyEvent(XK_Alt_L, false);
+ writer()->keyEvent(XK_Control_L, false);
+ }
+ break;
+ case ID_CTRL:
+ menu.unmap();
+ if (!viewOnly) {
+ ctrlDown = !ctrlDown;
+ writer()->keyEvent(XK_Control_L, ctrlDown);
+ menu.check(ID_CTRL, ctrlDown);
+ }
+ break;
+ case ID_ALT:
+ menu.unmap();
+ if (!viewOnly) {
+ altDown = !altDown;
+ writer()->keyEvent(XK_Alt_L, altDown);
+ menu.check(ID_ALT, altDown);
+ }
+ break;
+ case ID_ABOUT:
+ menu.unmap();
+ about.show();
+ break;
+ case ID_DISMISS:
+ menu.unmap();
+ break;
+ case ID_EXIT:
+ exit(1);
+ break;
+ }
+}
+
+
+// OptionsDialogCallback. setOptions() sets the options dialog's checkboxes
+// etc to reflect our flags. getOptions() sets our flags according to the
+// options dialog's checkboxes.
+
+void CConn::setOptions() {
+ char digit[2] = "0";
+ options.autoSelect.checked(autoSelect);
+ options.fullColour.checked(fullColour);
+ options.veryLowColour.checked(!fullColour && lowColourLevel == 0);
+ options.lowColour.checked(!fullColour && lowColourLevel == 1);
+ options.mediumColour.checked(!fullColour && lowColourLevel == 2);
+ options.tight.checked(currentEncoding == encodingTight);
+ options.zrle.checked(currentEncoding == encodingZRLE);
+ options.hextile.checked(currentEncoding == encodingHextile);
+ options.raw.checked(currentEncoding == encodingRaw);
+
+ options.customCompressLevel.checked(customCompressLevel);
+ digit[0] = '0' + compressLevel;
+ options.compressLevel.setText(digit);
+ options.noJpeg.checked(!noJpeg);
+ digit[0] = '0' + qualityLevel;
+ options.qualityLevel.setText(digit);
+
+ options.viewOnly.checked(viewOnly);
+ options.acceptClipboard.checked(acceptClipboard);
+ options.sendClipboard.checked(sendClipboard);
+ options.sendPrimary.checked(sendPrimary);
+ if (state() == RFBSTATE_NORMAL)
+ options.shared.disabled(true);
+ else
+ options.shared.checked(shared);
+ options.fullScreen.checked(fullScreen);
+ options.useLocalCursor.checked(useLocalCursor);
+ options.dotWhenNoCursor.checked(dotWhenNoCursor);
+}
+
+void CConn::getOptions() {
+ autoSelect = options.autoSelect.checked();
+ if (fullColour != options.fullColour.checked())
+ formatChange = true;
+ fullColour = options.fullColour.checked();
+ if (!fullColour) {
+ int newLowColourLevel = (options.veryLowColour.checked() ? 0 :
+ options.lowColour.checked() ? 1 : 2);
+ if (newLowColourLevel != lowColourLevel) {
+ lowColourLevel.setParam(newLowColourLevel);
+ formatChange = true;
+ }
+ }
+ unsigned int newEncoding = (options.tight.checked() ? encodingTight :
+ options.zrle.checked() ? encodingZRLE :
+ options.hextile.checked() ? encodingHextile :
+ encodingRaw);
+ if (newEncoding != currentEncoding) {
+ currentEncoding = newEncoding;
+ encodingChange = true;
+ }
+
+ customCompressLevel.setParam(options.customCompressLevel.checked());
+ if (cp.customCompressLevel != customCompressLevel) {
+ cp.customCompressLevel = customCompressLevel;
+ encodingChange = true;
+ }
+ compressLevel.setParam(options.compressLevel.getText());
+ if (cp.compressLevel != compressLevel) {
+ cp.compressLevel = compressLevel;
+ encodingChange = true;
+ }
+ noJpeg.setParam(!options.noJpeg.checked());
+ if (cp.noJpeg != noJpeg) {
+ cp.noJpeg = noJpeg;
+ encodingChange = true;
+ }
+ qualityLevel.setParam(options.qualityLevel.getText());
+ if (cp.qualityLevel != qualityLevel) {
+ cp.qualityLevel = qualityLevel;
+ encodingChange = true;
+ }
+
+ viewOnly.setParam(options.viewOnly.checked());
+ acceptClipboard.setParam(options.acceptClipboard.checked());
+ sendClipboard.setParam(options.sendClipboard.checked());
+ sendPrimary.setParam(options.sendPrimary.checked());
+ shared = options.shared.checked();
+ setShared(shared);
+ if (fullScreen != options.fullScreen.checked()) {
+ fullScreen = options.fullScreen.checked();
+ if (viewport) recreateViewport();
+ }
+ useLocalCursor.setParam(options.useLocalCursor.checked());
+ if (cp.supportsLocalCursor != useLocalCursor) {
+ cp.supportsLocalCursor = useLocalCursor;
+ encodingChange = true;
+ if (desktop)
+ desktop->resetLocalCursor();
+ }
+ dotWhenNoCursor.setParam(options.dotWhenNoCursor.checked());
+ checkEncodings();
+}
+
+void CConn::recreateViewport()
+{
+ TXViewport* oldViewport = viewport;
+ viewport = new TXViewport(dpy, cp.width, cp.height);
+ desktop->setViewport(viewport);
+ CharArray windowNameStr(windowName.getData());
+ if (!windowNameStr.buf[0]) {
+ windowNameStr.replaceBuf(new char[256]);
+ snprintf(windowNameStr.buf, 256, "VNC: %.240s", cp.name());
+ }
+ viewport->toplevel(windowNameStr.buf, this, argc, argv);
+ viewport->setBumpScroll(fullScreen);
+ XSetWindowAttributes attr;
+ attr.override_redirect = fullScreen;
+ XChangeWindowAttributes(dpy, viewport->win(), CWOverrideRedirect, &attr);
+ XChangeWindowAttributes(dpy, menu.win(), CWOverrideRedirect, &attr);
+ XChangeWindowAttributes(dpy, options.win(), CWOverrideRedirect, &attr);
+ XChangeWindowAttributes(dpy, about.win(), CWOverrideRedirect, &attr);
+ XChangeWindowAttributes(dpy, info.win(), CWOverrideRedirect, &attr);
+ reconfigureViewport();
+ menu.setTransientFor(viewport->win());
+ viewport->map();
+ if (fullScreen) {
+ XGrabKeyboard(dpy, desktop->win(), True, GrabModeAsync, GrabModeAsync,
+ CurrentTime);
+ } else {
+ XUngrabKeyboard(dpy, CurrentTime);
+ }
+ if (oldViewport) delete oldViewport;
+}
+
+void CConn::reconfigureViewport()
+{
+ viewport->setMaxSize(cp.width, cp.height);
+ if (fullScreen) {
+ viewport->resize(DisplayWidth(dpy,DefaultScreen(dpy)),
+ DisplayHeight(dpy,DefaultScreen(dpy)));
+ } else {
+ int w = cp.width;
+ int h = cp.height;
+ if (w + wmDecorationWidth >= DisplayWidth(dpy,DefaultScreen(dpy)))
+ w = DisplayWidth(dpy,DefaultScreen(dpy)) - wmDecorationWidth;
+ if (h + wmDecorationHeight >= DisplayHeight(dpy,DefaultScreen(dpy)))
+ h = DisplayHeight(dpy,DefaultScreen(dpy)) - wmDecorationHeight;
+
+ int x = (DisplayWidth(dpy,DefaultScreen(dpy)) - w - wmDecorationWidth) / 2;
+ int y = (DisplayHeight(dpy,DefaultScreen(dpy)) - h - wmDecorationHeight)/2;
+
+ CharArray geometryStr(geometry.getData());
+ viewport->setGeometry(geometryStr.buf, x, y, w, h);
+ }
+}
+
+// Note: The method below is duplicated in vncviewer/cview.cxx!
+
+// autoSelectFormatAndEncoding() chooses the format and encoding appropriate
+// to the connection speed:
+//
+// Above 16Mbps (timing for at least a second), switch to hextile
+// Otherwise, switch to ZRLE
+//
+// Above 256Kbps, use full colour mode
+//
+void CConn::autoSelectFormatAndEncoding()
+{
+ int kbitsPerSecond = sock->inStream().kbitsPerSecond();
+ unsigned int newEncoding = currentEncoding;
+ bool newFullColour = fullColour;
+ unsigned int timeWaited = sock->inStream().timeWaited();
+
+ // Select best encoding
+ if (kbitsPerSecond > 16000 && timeWaited >= 10000) {
+ newEncoding = encodingHextile;
+ } else {
+ newEncoding = encodingZRLE;
+ }
+
+ if (newEncoding != currentEncoding) {
+ vlog.info("Throughput %d kbit/s - changing to %s encoding",
+ kbitsPerSecond, encodingName(newEncoding));
+ currentEncoding = newEncoding;
+ encodingChange = true;
+ }
+
+ if (kbitsPerSecond == 0) {
+ return;
+ }
+
+ if (cp.beforeVersion(3, 8)) {
+ // Xvnc from TightVNC 1.2.9 sends out FramebufferUpdates with
+ // cursors "asynchronously". If this happens in the middle of a
+ // pixel format change, the server will encode the cursor with
+ // the old format, but the client will try to decode it
+ // according to the new format. This will lead to a
+ // crash. Therefore, we do not allow automatic format change for
+ // old servers.
+ return;
+ }
+
+ // Select best color level
+ newFullColour = (kbitsPerSecond > 256);
+ if (newFullColour != fullColour) {
+ vlog.info("Throughput %d kbit/s - full color is now %s",
+ kbitsPerSecond,
+ newFullColour ? "enabled" : "disabled");
+ fullColour = newFullColour;
+ formatChange = true;
+ }
+}
+
+// checkEncodings() sends a setEncodings message if one is needed.
+void CConn::checkEncodings()
+{
+ if (encodingChange && writer()) {
+ vlog.info("Using %s encoding",encodingName(currentEncoding));
+ writer()->writeSetEncodings(currentEncoding, true);
+ encodingChange = false;
+ }
+}
+
+// requestNewUpdate() requests an update from the server, having set the
+// format and encoding appropriately.
+void CConn::requestNewUpdate()
+{
+ if (formatChange) {
+ if (fullColour) {
+ desktop->setPF(fullColourPF);
+ } else {
+ if (lowColourLevel == 0)
+ desktop->setPF(PixelFormat(8,3,0,1,1,1,1,2,1,0));
+ else if (lowColourLevel == 1)
+ desktop->setPF(PixelFormat(8,6,0,1,3,3,3,4,2,0));
+ else
+ desktop->setPF(PixelFormat(8,8,0,0));
+ }
+ char str[256];
+ desktop->getPF().print(str, 256);
+ vlog.info("Using pixel format %s",str);
+ cp.setPF(desktop->getPF());
+ writer()->writeSetPixelFormat(cp.pf());
+ }
+ checkEncodings();
+ writer()->writeFramebufferUpdateRequest(Rect(0, 0, cp.width, cp.height),
+ !formatChange);
+ formatChange = false;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-25 14:00:04 +0000