src/gui/util/qsystemtrayicon_x11.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/util/qsystemtrayicon_x11.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,394 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "private/qt_x11_p.h"
+#include "qlabel.h"
+#include "qx11info_x11.h"
+#include "qpainter.h"
+#include "qpixmap.h"
+#include "qbitmap.h"
+#include "qevent.h"
+#include "qapplication.h"
+#include "qlist.h"
+#include "qmenu.h"
+#include "qtimer.h"
+#include "qsystemtrayicon_p.h"
+#include "qpaintengine.h"
+
+#ifndef QT_NO_SYSTEMTRAYICON
+QT_BEGIN_NAMESPACE
+
+Window QSystemTrayIconSys::sysTrayWindow = XNone;
+QList<QSystemTrayIconSys *> QSystemTrayIconSys::trayIcons;
+QCoreApplication::EventFilter QSystemTrayIconSys::oldEventFilter = 0;
+Atom QSystemTrayIconSys::sysTraySelection = XNone;
+XVisualInfo QSystemTrayIconSys::sysTrayVisual = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+
+// Locate the system tray
+Window QSystemTrayIconSys::locateSystemTray()
+{
+    Display *display = QX11Info::display();
+    if (sysTraySelection == XNone) {
+        int screen = QX11Info::appScreen();
+        QString net_sys_tray = QString::fromLatin1("_NET_SYSTEM_TRAY_S%1").arg(screen);
+        sysTraySelection = XInternAtom(display, net_sys_tray.toLatin1(), False);
+    }
+
+    return XGetSelectionOwner(QX11Info::display(), sysTraySelection);
+}
+
+XVisualInfo* QSystemTrayIconSys::getSysTrayVisualInfo()
+{
+    Display *display = QX11Info::display();
+
+    if (!sysTrayVisual.visual) {
+        Window win = locateSystemTray();
+        if (win != XNone) {
+            Atom actual_type;
+            int actual_format;
+            ulong nitems, bytes_remaining;
+            uchar *data = 0;
+            int result = XGetWindowProperty(display, win, ATOM(_NET_SYSTEM_TRAY_VISUAL), 0, 1,
+                                            False, XA_VISUALID, &actual_type,
+                                            &actual_format, &nitems, &bytes_remaining, &data);
+            VisualID vid = 0;
+            if (result == Success && data && actual_type == XA_VISUALID && actual_format == 32 &&
+                nitems == 1 && bytes_remaining == 0)
+                vid = *(VisualID*)data;
+            if (data)
+                XFree(data);
+            if (vid == 0)
+                return 0;
+
+            uint mask = VisualIDMask;
+            XVisualInfo *vi, rvi;
+            int count;
+            rvi.visualid = vid;
+            vi = XGetVisualInfo(display, mask, &rvi, &count);
+            if (vi) {
+                sysTrayVisual = vi[0];
+                XFree((char*)vi);
+            }
+            if (sysTrayVisual.depth != 32)
+                memset(&sysTrayVisual, 0, sizeof(sysTrayVisual));
+        }
+    }
+
+    return sysTrayVisual.visual ? &sysTrayVisual : 0;
+}
+
+bool QSystemTrayIconSys::sysTrayTracker(void *message, long *result)
+{
+    bool retval = false;
+    if (QSystemTrayIconSys::oldEventFilter)
+        retval = QSystemTrayIconSys::oldEventFilter(message, result);
+
+    if (trayIcons.isEmpty())
+        return retval;
+
+    Display *display = QX11Info::display();
+    XEvent *ev = (XEvent *)message;
+    if  (ev->type == DestroyNotify && ev->xany.window == sysTrayWindow) {
+	sysTrayWindow = locateSystemTray();
+        memset(&sysTrayVisual, 0, sizeof(sysTrayVisual));
+        for (int i = 0; i < trayIcons.count(); i++) {
+            if (sysTrayWindow == XNone) {
+	        QBalloonTip::hideBalloon();
+                trayIcons[i]->hide(); // still no luck
+                trayIcons[i]->destroy();
+                trayIcons[i]->create();
+	    } else
+                trayIcons[i]->addToTray(); // add it to the new tray
+        }
+        retval = true;
+    } else if (ev->type == ClientMessage && sysTrayWindow == XNone) {
+        static Atom manager_atom = XInternAtom(display, "MANAGER", False);
+        XClientMessageEvent *cm = (XClientMessageEvent *)message;
+        if ((cm->message_type == manager_atom) && ((Atom)cm->data.l[1] == sysTraySelection)) {
+	    sysTrayWindow = cm->data.l[2];
+            memset(&sysTrayVisual, 0, sizeof(sysTrayVisual));
+	    XSelectInput(display, sysTrayWindow, StructureNotifyMask);
+            for (int i = 0; i < trayIcons.count(); i++) {
+                trayIcons[i]->addToTray();
+            }
+            retval = true;
+        }
+    } else if (ev->type == PropertyNotify && ev->xproperty.atom == ATOM(_NET_SYSTEM_TRAY_VISUAL) &&
+               ev->xproperty.window == sysTrayWindow) {
+        memset(&sysTrayVisual, 0, sizeof(sysTrayVisual));
+        for (int i = 0; i < trayIcons.count(); i++) {
+            trayIcons[i]->addToTray();
+        }
+    }
+
+    return retval;
+}
+
+QSystemTrayIconSys::QSystemTrayIconSys(QSystemTrayIcon *q)
+    : QWidget(0, Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint),
+      q(q), colormap(0)
+{
+    setAttribute(Qt::WA_AlwaysShowToolTips);
+    setAttribute(Qt::WA_QuitOnClose, false);
+    setAttribute(Qt::WA_NoSystemBackground, true);
+    setAttribute(Qt::WA_PaintOnScreen);
+
+    static bool eventFilterAdded = false;
+    Display *display = QX11Info::display();
+    if (!eventFilterAdded) {
+        oldEventFilter = qApp->setEventFilter(sysTrayTracker);
+	eventFilterAdded = true;
+	Window root = QX11Info::appRootWindow();
+        XWindowAttributes attr;
+        XGetWindowAttributes(display, root, &attr);
+        if ((attr.your_event_mask & StructureNotifyMask) != StructureNotifyMask) {
+            (void) QApplication::desktop(); // lame trick to ensure our event mask is not overridden
+            XSelectInput(display, root, attr.your_event_mask | StructureNotifyMask); // for MANAGER selection
+        }
+    }
+    if (trayIcons.isEmpty()) {
+        sysTrayWindow = locateSystemTray();
+	if (sysTrayWindow != XNone)
+	    XSelectInput(display, sysTrayWindow, StructureNotifyMask); // track tray events
+    }
+    trayIcons.append(this);
+    setMouseTracking(true);
+#ifndef QT_NO_TOOLTIP
+    setToolTip(q->toolTip());
+#endif
+    if (sysTrayWindow != XNone)
+        addToTray();
+}
+
+QSystemTrayIconSys::~QSystemTrayIconSys()
+{
+    trayIcons.removeAt(trayIcons.indexOf(this));
+    Display *display = QX11Info::display();
+    if (trayIcons.isEmpty()) {
+        if (sysTrayWindow == XNone)
+            return;
+        if (display)
+            XSelectInput(display, sysTrayWindow, 0); // stop tracking the tray
+        sysTrayWindow = XNone;
+    }
+    if (colormap)
+        XFreeColormap(display, colormap);
+}
+
+void QSystemTrayIconSys::addToTray()
+{
+    Q_ASSERT(sysTrayWindow != XNone);
+    Display *display = QX11Info::display();
+
+    XVisualInfo *vi = getSysTrayVisualInfo();
+    if (vi && vi->visual) {
+        Window root = RootWindow(display, vi->screen);
+        Window p = root;
+        if (QWidget *pw = parentWidget())
+            p = pw->effectiveWinId();
+        colormap = XCreateColormap(display, root, vi->visual, AllocNone);
+        XSetWindowAttributes wsa;
+        wsa.background_pixmap = 0;
+        wsa.colormap = colormap;
+        wsa.background_pixel = 0;
+        wsa.border_pixel = 0;
+        Window wid = XCreateWindow(display, p, -1, -1, 1, 1,
+                                   0, vi->depth, InputOutput, vi->visual,
+                                   CWBackPixmap|CWBackPixel|CWBorderPixel|CWColormap, &wsa);
+        create(wid);
+    } else {
+        XSetWindowBackgroundPixmap(display, winId(), ParentRelative);
+    }
+
+    // GNOME, NET WM Specification
+    static Atom netwm_tray_atom = XInternAtom(display, "_NET_SYSTEM_TRAY_OPCODE", False);
+    long l[5] = { CurrentTime, SYSTEM_TRAY_REQUEST_DOCK, winId(), 0, 0 };
+    XEvent ev;
+    memset(&ev, 0, sizeof(ev));
+    ev.xclient.type = ClientMessage;
+    ev.xclient.window = sysTrayWindow;
+    ev.xclient.message_type = netwm_tray_atom;
+    ev.xclient.format = 32;
+    memcpy((char *)&ev.xclient.data, (const char *) l, sizeof(l));
+    XSendEvent(display, sysTrayWindow, False, 0, &ev);
+    setMinimumSize(22, 22); // required at least on GNOME
+}
+
+void QSystemTrayIconSys::updateIcon()
+{
+    update();
+}
+
+void QSystemTrayIconSys::resizeEvent(QResizeEvent *re)
+{
+     QWidget::resizeEvent(re);
+     updateIcon();
+}
+
+void QSystemTrayIconSys::paintEvent(QPaintEvent*)
+{
+    QPainter p(this);
+    if (!getSysTrayVisualInfo()) {
+        const QRegion oldSystemClip = p.paintEngine()->systemClip();
+        const QRect clearedRect = oldSystemClip.boundingRect();
+        XClearArea(QX11Info::display(), winId(), clearedRect.x(), clearedRect.y(),
+                   clearedRect.width(), clearedRect.height(), False);
+        QPaintEngine *pe = p.paintEngine();
+        pe->setSystemClip(clearedRect);
+        q->icon().paint(&p, rect());
+        pe->setSystemClip(oldSystemClip);
+    } else {
+        p.setCompositionMode(QPainter::CompositionMode_Source);
+        p.fillRect(rect(), Qt::transparent);
+        p.setCompositionMode(QPainter::CompositionMode_SourceOver);
+        q->icon().paint(&p, rect());
+    }
+}
+
+void QSystemTrayIconSys::mousePressEvent(QMouseEvent *ev)
+{
+    QPoint globalPos = ev->globalPos();
+    if (ev->button() == Qt::RightButton && q->contextMenu())
+        q->contextMenu()->popup(globalPos);
+
+    if (QBalloonTip::isBalloonVisible()) {
+        emit q->messageClicked();
+        QBalloonTip::hideBalloon();
+    }
+
+    if (ev->button() == Qt::LeftButton)
+        emit q->activated(QSystemTrayIcon::Trigger);
+    else if (ev->button() == Qt::RightButton)
+        emit q->activated(QSystemTrayIcon::Context);
+    else if (ev->button() == Qt::MidButton)
+        emit q->activated(QSystemTrayIcon::MiddleClick);
+}
+
+void QSystemTrayIconSys::mouseDoubleClickEvent(QMouseEvent *ev)
+{
+    if (ev->button() == Qt::LeftButton)
+        emit q->activated(QSystemTrayIcon::DoubleClick);
+}
+
+void QSystemTrayIconSys::wheelEvent(QWheelEvent *e)
+{
+    QApplication::sendEvent(q, e);
+}
+
+bool QSystemTrayIconSys::event(QEvent *e)
+{
+    if (e->type() == QEvent::ToolTip) {
+        return QApplication::sendEvent(q, e);
+    }
+    return QWidget::event(e);
+}
+
+bool QSystemTrayIconSys::x11Event(XEvent *event)
+{
+    if (event->type == ReparentNotify)
+        show();
+    return QWidget::x11Event(event);
+}
+
+////////////////////////////////////////////////////////////////////////////
+void QSystemTrayIconPrivate::install_sys()
+{
+    Q_Q(QSystemTrayIcon);
+    if (!sys)
+        sys = new QSystemTrayIconSys(q);
+}
+
+QRect QSystemTrayIconPrivate::geometry_sys() const
+{
+    if (!sys)
+	return QRect();
+    return QRect(sys->mapToGlobal(QPoint(0, 0)), sys->size());
+}
+
+void QSystemTrayIconPrivate::remove_sys()
+{
+    if (!sys)
+        return;
+    QBalloonTip::hideBalloon();
+    sys->hide(); // this should do the trick, but...
+    delete sys; // wm may resize system tray only for DestroyEvents
+    sys = 0;
+}
+
+void QSystemTrayIconPrivate::updateIcon_sys()
+{
+    if (!sys)
+        return;
+    sys->updateIcon();
+}
+
+void QSystemTrayIconPrivate::updateMenu_sys()
+{
+
+}
+
+void QSystemTrayIconPrivate::updateToolTip_sys()
+{
+    if (!sys)
+        return;
+#ifndef QT_NO_TOOLTIP
+    sys->setToolTip(toolTip);
+#endif
+}
+
+bool QSystemTrayIconPrivate::isSystemTrayAvailable_sys()
+{
+    return QSystemTrayIconSys::locateSystemTray() != XNone;
+}
+
+void QSystemTrayIconPrivate::showMessage_sys(const QString &message, const QString &title,
+                                   QSystemTrayIcon::MessageIcon icon, int msecs)
+{
+    if (!sys)
+        return;
+    QPoint g = sys->mapToGlobal(QPoint(0, 0));
+    QBalloonTip::showBalloon(icon, message, title, sys->q,
+                             QPoint(g.x() + sys->width()/2, g.y() + sys->height()/2),
+                             msecs);
+}
+
+QT_END_NAMESPACE
+#endif //QT_NO_SYSTEMTRAYICON