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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtGui module of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

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    24 ** In addition, as a special exception, Nokia gives you certain additional

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include "private/qt_x11_p.h"

    43 #include "qlabel.h"

    44 #include "qx11info_x11.h"

    45 #include "qpainter.h"

    46 #include "qpixmap.h"

    47 #include "qbitmap.h"

    48 #include "qevent.h"

    49 #include "qapplication.h"

    50 #include "qlist.h"

    51 #include "qmenu.h"

    52 #include "qtimer.h"

    53 #include "qsystemtrayicon_p.h"

    54 #include "qpaintengine.h"

    55 

    56 #ifndef QT_NO_SYSTEMTRAYICON

    57 QT_BEGIN_NAMESPACE

    58 

    59 Window QSystemTrayIconSys::sysTrayWindow = XNone;

    60 QList<QSystemTrayIconSys *> QSystemTrayIconSys::trayIcons;

    61 QCoreApplication::EventFilter QSystemTrayIconSys::oldEventFilter = 0;

    62 Atom QSystemTrayIconSys::sysTraySelection = XNone;

    63 XVisualInfo QSystemTrayIconSys::sysTrayVisual = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

    64 

    65 // Locate the system tray

    66 Window QSystemTrayIconSys::locateSystemTray()

    67 {

    68     Display *display = QX11Info::display();

    69     if (sysTraySelection == XNone) {

    70         int screen = QX11Info::appScreen();

    71         QString net_sys_tray = QString::fromLatin1("_NET_SYSTEM_TRAY_S%1").arg(screen);

    72         sysTraySelection = XInternAtom(display, net_sys_tray.toLatin1(), False);

    73     }

    74 

    75     return XGetSelectionOwner(QX11Info::display(), sysTraySelection);

    76 }

    77 

    78 XVisualInfo* QSystemTrayIconSys::getSysTrayVisualInfo()

    79 {

    80     Display *display = QX11Info::display();

    81 

    82     if (!sysTrayVisual.visual) {

    83         Window win = locateSystemTray();

    84         if (win != XNone) {

    85             Atom actual_type;

    86             int actual_format;

    87             ulong nitems, bytes_remaining;

    88             uchar *data = 0;

    89             int result = XGetWindowProperty(display, win, ATOM(_NET_SYSTEM_TRAY_VISUAL), 0, 1,

    90                                             False, XA_VISUALID, &actual_type,

    91                                             &actual_format, &nitems, &bytes_remaining, &data);

    92             VisualID vid = 0;

    93             if (result == Success && data && actual_type == XA_VISUALID && actual_format == 32 &&

    94                 nitems == 1 && bytes_remaining == 0)

    95                 vid = *(VisualID*)data;

    96             if (data)

    97                 XFree(data);

    98             if (vid == 0)

    99                 return 0;

   100 

   101             uint mask = VisualIDMask;

   102             XVisualInfo *vi, rvi;

   103             int count;

   104             rvi.visualid = vid;

   105             vi = XGetVisualInfo(display, mask, &rvi, &count);

   106             if (vi) {

   107                 sysTrayVisual = vi[0];

   108                 XFree((char*)vi);

   109             }

   110             if (sysTrayVisual.depth != 32)

   111                 memset(&sysTrayVisual, 0, sizeof(sysTrayVisual));

   112         }

   113     }

   114 

   115     return sysTrayVisual.visual ? &sysTrayVisual : 0;

   116 }

   117 

   118 bool QSystemTrayIconSys::sysTrayTracker(void *message, long *result)

   119 {

   120     bool retval = false;

   121     if (QSystemTrayIconSys::oldEventFilter)

   122         retval = QSystemTrayIconSys::oldEventFilter(message, result);

   123 

   124     if (trayIcons.isEmpty())

   125         return retval;

   126 

   127     Display *display = QX11Info::display();

   128     XEvent *ev = (XEvent *)message;

   129     if  (ev->type == DestroyNotify && ev->xany.window == sysTrayWindow) {

   130 	sysTrayWindow = locateSystemTray();

   131         memset(&sysTrayVisual, 0, sizeof(sysTrayVisual));

   132         for (int i = 0; i < trayIcons.count(); i++) {

   133             if (sysTrayWindow == XNone) {

   134 	        QBalloonTip::hideBalloon();

   135                 trayIcons[i]->hide(); // still no luck

   136                 trayIcons[i]->destroy();

   137                 trayIcons[i]->create();

   138 	    } else

   139                 trayIcons[i]->addToTray(); // add it to the new tray

   140         }

   141         retval = true;

   142     } else if (ev->type == ClientMessage && sysTrayWindow == XNone) {

   143         static Atom manager_atom = XInternAtom(display, "MANAGER", False);

   144         XClientMessageEvent *cm = (XClientMessageEvent *)message;

   145         if ((cm->message_type == manager_atom) && ((Atom)cm->data.l[1] == sysTraySelection)) {

   146 	    sysTrayWindow = cm->data.l[2];

   147             memset(&sysTrayVisual, 0, sizeof(sysTrayVisual));

   148 	    XSelectInput(display, sysTrayWindow, StructureNotifyMask);

   149             for (int i = 0; i < trayIcons.count(); i++) {

   150                 trayIcons[i]->addToTray();

   151             }

   152             retval = true;

   153         }

   154     } else if (ev->type == PropertyNotify && ev->xproperty.atom == ATOM(_NET_SYSTEM_TRAY_VISUAL) &&

   155                ev->xproperty.window == sysTrayWindow) {

   156         memset(&sysTrayVisual, 0, sizeof(sysTrayVisual));

   157         for (int i = 0; i < trayIcons.count(); i++) {

   158             trayIcons[i]->addToTray();

   159         }

   160     }

   161 

   162     return retval;

   163 }

   164 

   165 QSystemTrayIconSys::QSystemTrayIconSys(QSystemTrayIcon *q)

   166     : QWidget(0, Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint),

   167       q(q), colormap(0)

   168 {

   169     setAttribute(Qt::WA_AlwaysShowToolTips);

   170     setAttribute(Qt::WA_QuitOnClose, false);

   171     setAttribute(Qt::WA_NoSystemBackground, true);

   172     setAttribute(Qt::WA_PaintOnScreen);

   173 

   174     static bool eventFilterAdded = false;

   175     Display *display = QX11Info::display();

   176     if (!eventFilterAdded) {

   177         oldEventFilter = qApp->setEventFilter(sysTrayTracker);

   178 	eventFilterAdded = true;

   179 	Window root = QX11Info::appRootWindow();

   180         XWindowAttributes attr;

   181         XGetWindowAttributes(display, root, &attr);

   182         if ((attr.your_event_mask & StructureNotifyMask) != StructureNotifyMask) {

   183             (void) QApplication::desktop(); // lame trick to ensure our event mask is not overridden

   184             XSelectInput(display, root, attr.your_event_mask | StructureNotifyMask); // for MANAGER selection

   185         }

   186     }

   187     if (trayIcons.isEmpty()) {

   188         sysTrayWindow = locateSystemTray();

   189 	if (sysTrayWindow != XNone)

   190 	    XSelectInput(display, sysTrayWindow, StructureNotifyMask); // track tray events

   191     }

   192     trayIcons.append(this);

   193     setMouseTracking(true);

   194 #ifndef QT_NO_TOOLTIP

   195     setToolTip(q->toolTip());

   196 #endif

   197     if (sysTrayWindow != XNone)

   198         addToTray();

   199 }

   200 

   201 QSystemTrayIconSys::~QSystemTrayIconSys()

   202 {

   203     trayIcons.removeAt(trayIcons.indexOf(this));

   204     Display *display = QX11Info::display();

   205     if (trayIcons.isEmpty()) {

   206         if (sysTrayWindow == XNone)

   207             return;

   208         if (display)

   209             XSelectInput(display, sysTrayWindow, 0); // stop tracking the tray

   210         sysTrayWindow = XNone;

   211     }

   212     if (colormap)

   213         XFreeColormap(display, colormap);

   214 }

   215 

   216 void QSystemTrayIconSys::addToTray()

   217 {

   218     Q_ASSERT(sysTrayWindow != XNone);

   219     Display *display = QX11Info::display();

   220 

   221     XVisualInfo *vi = getSysTrayVisualInfo();

   222     if (vi && vi->visual) {

   223         Window root = RootWindow(display, vi->screen);

   224         Window p = root;

   225         if (QWidget *pw = parentWidget())

   226             p = pw->effectiveWinId();

   227         colormap = XCreateColormap(display, root, vi->visual, AllocNone);

   228         XSetWindowAttributes wsa;

   229         wsa.background_pixmap = 0;

   230         wsa.colormap = colormap;

   231         wsa.background_pixel = 0;

   232         wsa.border_pixel = 0;

   233         Window wid = XCreateWindow(display, p, -1, -1, 1, 1,

   234                                    0, vi->depth, InputOutput, vi->visual,

   235                                    CWBackPixmap|CWBackPixel|CWBorderPixel|CWColormap, &wsa);

   236         create(wid);

   237     } else {

   238         XSetWindowBackgroundPixmap(display, winId(), ParentRelative);

   239     }

   240 

   241     // GNOME, NET WM Specification

   242     static Atom netwm_tray_atom = XInternAtom(display, "_NET_SYSTEM_TRAY_OPCODE", False);

   243     long l[5] = { CurrentTime, SYSTEM_TRAY_REQUEST_DOCK, winId(), 0, 0 };

   244     XEvent ev;

   245     memset(&ev, 0, sizeof(ev));

   246     ev.xclient.type = ClientMessage;

   247     ev.xclient.window = sysTrayWindow;

   248     ev.xclient.message_type = netwm_tray_atom;

   249     ev.xclient.format = 32;

   250     memcpy((char *)&ev.xclient.data, (const char *) l, sizeof(l));

   251     XSendEvent(display, sysTrayWindow, False, 0, &ev);

   252     setMinimumSize(22, 22); // required at least on GNOME

   253 }

   254 

   255 void QSystemTrayIconSys::updateIcon()

   256 {

   257     update();

   258 }

   259 

   260 void QSystemTrayIconSys::resizeEvent(QResizeEvent *re)

   261 {

   262      QWidget::resizeEvent(re);

   263      updateIcon();

   264 }

   265 

   266 void QSystemTrayIconSys::paintEvent(QPaintEvent*)

   267 {

   268     QPainter p(this);

   269     if (!getSysTrayVisualInfo()) {

   270         const QRegion oldSystemClip = p.paintEngine()->systemClip();

   271         const QRect clearedRect = oldSystemClip.boundingRect();

   272         XClearArea(QX11Info::display(), winId(), clearedRect.x(), clearedRect.y(),

   273                    clearedRect.width(), clearedRect.height(), False);

   274         QPaintEngine *pe = p.paintEngine();

   275         pe->setSystemClip(clearedRect);

   276         q->icon().paint(&p, rect());

   277         pe->setSystemClip(oldSystemClip);

   278     } else {

   279         p.setCompositionMode(QPainter::CompositionMode_Source);

   280         p.fillRect(rect(), Qt::transparent);

   281         p.setCompositionMode(QPainter::CompositionMode_SourceOver);

   282         q->icon().paint(&p, rect());

   283     }

   284 }

   285 

   286 void QSystemTrayIconSys::mousePressEvent(QMouseEvent *ev)

   287 {

   288     QPoint globalPos = ev->globalPos();

   289     if (ev->button() == Qt::RightButton && q->contextMenu())

   290         q->contextMenu()->popup(globalPos);

   291 

   292     if (QBalloonTip::isBalloonVisible()) {

   293         emit q->messageClicked();

   294         QBalloonTip::hideBalloon();

   295     }

   296 

   297     if (ev->button() == Qt::LeftButton)

   298         emit q->activated(QSystemTrayIcon::Trigger);

   299     else if (ev->button() == Qt::RightButton)

   300         emit q->activated(QSystemTrayIcon::Context);

   301     else if (ev->button() == Qt::MidButton)

   302         emit q->activated(QSystemTrayIcon::MiddleClick);

   303 }

   304 

   305 void QSystemTrayIconSys::mouseDoubleClickEvent(QMouseEvent *ev)

   306 {

   307     if (ev->button() == Qt::LeftButton)

   308         emit q->activated(QSystemTrayIcon::DoubleClick);

   309 }

   310 

   311 void QSystemTrayIconSys::wheelEvent(QWheelEvent *e)

   312 {

   313     QApplication::sendEvent(q, e);

   314 }

   315 

   316 bool QSystemTrayIconSys::event(QEvent *e)

   317 {

   318     if (e->type() == QEvent::ToolTip) {

   319         return QApplication::sendEvent(q, e);

   320     }

   321     return QWidget::event(e);

   322 }

   323 

   324 bool QSystemTrayIconSys::x11Event(XEvent *event)

   325 {

   326     if (event->type == ReparentNotify)

   327         show();

   328     return QWidget::x11Event(event);

   329 }

   330 

   331 ////////////////////////////////////////////////////////////////////////////

   332 void QSystemTrayIconPrivate::install_sys()

   333 {

   334     Q_Q(QSystemTrayIcon);

   335     if (!sys)

   336         sys = new QSystemTrayIconSys(q);

   337 }

   338 

   339 QRect QSystemTrayIconPrivate::geometry_sys() const

   340 {

   341     if (!sys)

   342 	return QRect();

   343     return QRect(sys->mapToGlobal(QPoint(0, 0)), sys->size());

   344 }

   345 

   346 void QSystemTrayIconPrivate::remove_sys()

   347 {

   348     if (!sys)

   349         return;

   350     QBalloonTip::hideBalloon();

   351     sys->hide(); // this should do the trick, but...

   352     delete sys; // wm may resize system tray only for DestroyEvents

   353     sys = 0;

   354 }

   355 

   356 void QSystemTrayIconPrivate::updateIcon_sys()

   357 {

   358     if (!sys)

   359         return;

   360     sys->updateIcon();

   361 }

   362 

   363 void QSystemTrayIconPrivate::updateMenu_sys()

   364 {

   365 

   366 }

   367 

   368 void QSystemTrayIconPrivate::updateToolTip_sys()

   369 {

   370     if (!sys)

   371         return;

   372 #ifndef QT_NO_TOOLTIP

   373     sys->setToolTip(toolTip);

   374 #endif

   375 }

   376 

   377 bool QSystemTrayIconPrivate::isSystemTrayAvailable_sys()

   378 {

   379     return QSystemTrayIconSys::locateSystemTray() != XNone;

   380 }

   381 

   382 void QSystemTrayIconPrivate::showMessage_sys(const QString &message, const QString &title,

   383                                    QSystemTrayIcon::MessageIcon icon, int msecs)

   384 {

   385     if (!sys)

   386         return;

   387     QPoint g = sys->mapToGlobal(QPoint(0, 0));

   388     QBalloonTip::showBalloon(icon, message, title, sys->q,

   389                              QPoint(g.x() + sys->width()/2, g.y() + sys->height()/2),

   390                              msecs);

   391 }

   392 

   393 QT_END_NAMESPACE

   394 #endif //QT_NO_SYSTEMTRAYICON