qapplication_qws.cpp

来自「QT 开发环境里面一个很重要的文件」· C++ 代码 · 共 2,229 行 · 第 1/5 页

bool QWSDisplay::initLock(const QString &filename, bool create)
{
    if (!lock) {
        lock = new QLock(filename, 'd', create);

        if (!lock->isValid()) {
            delete lock;
            lock = 0;
            return false;
        }
    }

    return true;
}

void QWSDisplay::setSelectionOwner(int winId, const QTime &time)
{
    QWSSetSelectionOwnerCommand cmd;
    cmd.simpleData.windowid = winId;
    cmd.simpleData.hour = time.hour();
    cmd.simpleData.minute = time.minute();
    cmd.simpleData.sec = time.second();
    cmd.simpleData.ms = time.msec();
    d->sendCommand(cmd);
}

void QWSDisplay::convertSelection(int winId, int selectionProperty, const QString &mimeTypes)
{
#ifdef QT_NO_QWS_PROPERTIES
    Q_UNUSED(mimeTypes);
#else
    // ### we need the atom/property thingy like in X here
    addProperty(winId, QT_QWS_PROPERTY_CONVERTSELECTION);
    setProperty(winId, QT_QWS_PROPERTY_CONVERTSELECTION,
                 int(QWSPropertyManager::PropReplace), mimeTypes.toLatin1());
#endif
    QWSConvertSelectionCommand cmd;
    cmd.simpleData.requestor = winId;
    cmd.simpleData.selection = selectionProperty;
    cmd.simpleData.mimeTypes = QT_QWS_PROPERTY_CONVERTSELECTION;
    d->sendCommand(cmd);
}

void QWSDisplay::defineCursor(int id, const QBitmap &curs, const QBitmap &mask,
                            int hotX, int hotY)
{
    QImage cursImg = curs.toImage();
    QImage maskImg = mask.toImage();

    QWSDefineCursorCommand cmd;
    cmd.simpleData.width = curs.width();
    cmd.simpleData.height = curs.height();
    cmd.simpleData.hotX = hotX;
    cmd.simpleData.hotY = hotY;
    cmd.simpleData.id = id;


    // must copy each scanline since there might be gaps between them
    const int height = curs.height();
    const int width = curs.width();
    const int dst_bpl = (width + 7) / 8;

    int dataLen = dst_bpl * height;
    uchar *data = new uchar[dataLen*2];
    uchar *dst = data;

    int src_bpl = cursImg.bytesPerLine();
    const uchar *cursSrc = cursImg.bits();
    for (int i = 0; i < height; ++i) {
        memcpy(dst, cursSrc + i*src_bpl, dst_bpl);
        dst += dst_bpl;
    }

    src_bpl = maskImg.bytesPerLine();
    const uchar *maskSrc = maskImg.bits();
    for (int i = 0; i < height; ++i) {
        memcpy(dst, maskSrc + i*src_bpl, dst_bpl);
        dst += dst_bpl;
    }

    cmd.setData(reinterpret_cast<char*>(data), dataLen*2);
    delete [] data;
    d->sendCommand(cmd);
}

void QWSDisplay::destroyCursor(int id)
{
    QWSDefineCursorCommand cmd;
    cmd.simpleData.width = 0;
    cmd.simpleData.height = 0;
    cmd.simpleData.hotX = 0;
    cmd.simpleData.hotY = 0;
    cmd.simpleData.id = id;
    cmd.setData(0, 0);

    d->sendCommand(cmd);
}

#ifndef QT_NO_SOUND
void QWSDisplay::playSoundFile(const QString& f)
{
    QWSPlaySoundCommand cmd;
    cmd.setFileName(f);
    d->sendCommand(cmd);
}
#endif

#ifndef QT_NO_COP
void QWSDisplay::registerChannel(const QString& channel)
{
    QWSQCopRegisterChannelCommand reg;
    reg.setChannel(channel);
    qt_fbdpy->d->sendCommand(reg);
}

void QWSDisplay::sendMessage(const QString &channel, const QString &msg,
                   const QByteArray &data)
{
    QWSQCopSendCommand com;
    com.setMessage(channel, msg, data);
    qt_fbdpy->d->sendCommand(com);
}

void QWSDisplay::flushCommands()
{
    qt_fbdpy->d->flushCommands();
}

/*
  caller deletes result
*/
QWSQCopMessageEvent* QWSDisplay::waitForQCopResponse()
{
    qt_fbdpy->d->waitForQCopResponse();
    QWSQCopMessageEvent *e = static_cast<QWSQCopMessageEvent*>(qt_fbdpy->d->dequeue());
    Q_ASSERT(e->type == QWSEvent::QCopMessage);
    return e;
}
#endif


void QWSDisplay::setWindowCaption(QWidget *w, const QString &c)
{
    if (w->isWindow()) {
        nameRegion(w->internalWinId(), w->objectName(), c);
        static_cast<QETWidget *>(w)->repaintDecoration(qApp->desktop()->rect(), true);
    }
}

void QWSDisplay::selectCursor(QWidget *w, unsigned int cursId)
{
    if (cursId != qt_last_cursor)
    {
        QWidget *top = w->window();
        qt_last_cursor = cursId;
        QWSSelectCursorCommand cmd;
        cmd.simpleData.windowid = top->internalWinId();
        cmd.simpleData.id = cursId;
        d->sendCommand(cmd);
        d->flush();
    }
}

void QWSDisplay::setCursorPosition(int x, int y)
{
    QWSPositionCursorCommand cmd;
    cmd.simpleData.newX = x;
    cmd.simpleData.newY = y;
    d->sendCommand(cmd);
    d->flush();
}

void QWSDisplay::grabMouse(QWidget *w, bool grab)
{
    QWidget *top = w->window();
    QWSGrabMouseCommand cmd;
#ifdef QT_DEBUG
    memset(cmd.simpleDataPtr, 0, sizeof(cmd.simpleData)); //shut up Valgrind
#endif
    cmd.simpleData.windowid = top->winId();
    cmd.simpleData.grab = grab;
    d->sendCommand(cmd);
    d->flush();
}

void QWSDisplay::grabKeyboard(QWidget *w, bool grab)
{
    QWidget *top = w->window();
    QWSGrabKeyboardCommand cmd;
#ifdef QT_DEBUG
    memset(cmd.simpleDataPtr, 0, sizeof(cmd.simpleData)); //shut up Valgrind
#endif
    cmd.simpleData.windowid = top->winId();
    cmd.simpleData.grab = grab;
    d->sendCommand(cmd);
    d->flush();
}

QList<QWSWindowInfo> QWSDisplay::windowList()
{
    QList<QWSWindowInfo> ret;
    if(d->directServerConnection()) {
        QList<QWSInternalWindowInfo*> * qin=QWSServer::windowList();
        for (int i = 0; i < qin->count(); ++i) {
            QWSInternalWindowInfo * qwi = qin->at(i);
            QWSWindowInfo tmp;
            tmp.winid = qwi->winid;
            tmp.clientid = qwi->clientid;
            tmp.name = QString(qwi->name);
            ret.append(tmp);
        }
        qDeleteAll(*qin);
        delete qin;
    }
    return ret;
}

int QWSDisplay::windowAt(const QPoint &p)
{
    //### currently only implemented for the server process
    int ret = 0;
    if(d->directServerConnection()) {
        QWSWindow *win = qwsServer->windowAt(p);
        if (win)
            return win->winId();
    }
    return ret;
}

void QWSDisplay::setRawMouseEventFilter(void (*filter)(QWSMouseEvent *))
{
    if (qt_fbdpy)
        qt_fbdpy->d->setMouseFilter(filter);
}

#ifdef QT_QWS_DYNAMIC_TRANSFORMATION
#ifdef QT_QWS_TRANSFORMED
extern void qws_setScreenTransformation(int);
extern void qws_mapPixmaps(bool from);
#endif

void QWSDisplay::setTransformation(int t)
{
#ifdef QT_QWS_TRANSFORMED

    QApplicationPrivate *ap = QApplicationPrivate::instance();
    const QRect maxWindowRect = ap->maxWindowRect(qt_screen);
    bool isFullScreen = maxWindowRect == QRect(0, 0, qt_screen->width(), qt_screen->height());

    QPixmapCache::clear();
    QFontCache::instance->clear();
    qws_mapPixmaps(true);
    qws_setScreenTransformation(t);
    qws_mapPixmaps(false);

    if (qt_fbdpy->d_func()->directServerConnection()) {
        qwsServer->d_func()->resetEngine();
        qwsServer->d_func()->refresh();
    }

    QSize olds = qApp->desktop()->size();
    qApp->desktop()->resize(qt_screen->width(), qt_screen->height());
    // ## why post the resize event?
    qApp->postEvent(qApp->desktop(), new QResizeEvent(qApp->desktop()->size(), olds));
    emit QApplication::desktop()->resized(0);

    QWidgetList  list = QApplication::topLevelWidgets();
    for (int i = list.size()-1; i >= 0; --i) {
        QWidget *w = (QWidget*)list[i];

        if ((w->windowType() == Qt::Desktop)) {
            //nothing
        } else if (w->testAttribute(Qt::WA_WState_FullScreen)) {
            w->resize(qt_screen->width(), qt_screen->height());
        } else {
            QETWidget *etw = static_cast<QETWidget*>(w);
            etw->updateRegion();
            if (etw->isVisible()) {
                etw->repaintHierarchy(etw->geometry(), true);
                etw->repaintDecoration(qApp->desktop()->rect(), true);
            }
        }
    }


    // only update the mwr if it is full screen.
    if (isFullScreen) {
        QApplicationPriate *ap = QApplicationPrivate::instance();
        ap->setMaxWindowRect(qt_screen,
                             QRect(0,0, qt_screen->width(), qt_screen->height()));
    }

#endif
}
#endif

static bool qt_try_modal(QWidget *, QWSEvent *);

/*****************************************************************************
  qt_init() - initializes Qt/FB
 *****************************************************************************/

static void qt_set_qws_resources()

{
    if (QApplication::desktopSettingsAware())
        QApplicationPrivate::qws_apply_settings();

    if (appFont)
        QApplication::setFont(QFont(appFont));

    if (appBGCol || appBTNCol || appFGCol) {
        (void) QApplication::style();  // trigger creation of application style and system palettes
        QColor btn;
        QColor bg;
        QColor fg;
        if (appBGCol)
            bg = QColor(appBGCol);
        else
            bg = QApplicationPrivate::sys_pal->color(QPalette::Window);
        if (appFGCol)
            fg = QColor(appFGCol);
        else
            fg = QApplicationPrivate::sys_pal->color(QPalette::WindowText);
        if (appBTNCol)
            btn = QColor(appBTNCol);
        else
            btn = QApplicationPrivate::sys_pal->color(QPalette::Button);

        int h,s,v;
        fg.getHsv(&h,&s,&v);
        QColor base = Qt::white;
        bool bright_mode = false;
        if (v >= 255-50) {
            base = btn.dark(150);
            bright_mode = true;
        }

        QPalette pal(fg, btn, btn.light(), btn.dark(), btn.dark(150), fg, Qt::white, base, bg);
        if (bright_mode) {
            pal.setColor(QPalette::HighlightedText, base);
            pal.setColor(QPalette::Highlight, Qt::white);
        } else {
            pal.setColor(QPalette::HighlightedText, Qt::white);
            pal.setColor(QPalette::Highlight, Qt::darkBlue);
        }
        QColor disabled((fg.red()   + btn.red())  / 2,
                        (fg.green() + btn.green())/ 2,
                        (fg.blue()  + btn.blue()) / 2);
        pal.setColorGroup(QPalette::Disabled, disabled, btn, btn.light(125),
                          btn.dark(), btn.dark(150), disabled, Qt::white, Qt::white, bg);
        if (bright_mode) {
            pal.setColor(QPalette::Disabled, QPalette::HighlightedText, base);
            pal.setColor(QPalette::Disabled, QPalette::Highlight, Qt::white);
        } else {
            pal.setColor(QPalette::Disabled, QPalette::HighlightedText, Qt::white);
            pal.setColor(QPalette::Disabled, QPalette::Highlight, Qt::darkBlue);
        }
        QApplicationPrivate::setSystemPalette(pal);

    }
}

void QApplicationPrivate::initializeWidgetPaletteHash()
{
}

/*! \internal
    apply the settings to the application
*/
bool QApplicationPrivate::qws_apply_settings()
{
#ifndef QT_NO_SETTINGS
    QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
    settings.beginGroup(QLatin1String("Qt"));

    QStringList strlist;
    int i;
    QPalette pal(Qt::black);
    int groupCount = 0;
    strlist = settings.value(QLatin1String("Palette/active")).toStringList();
    if (strlist.count() == QPalette::NColorRoles) {
        ++groupCount;
        for (i = 0; i < QPalette::NColorRoles; i++)
            pal.setColor(QPalette::Active, (QPalette::ColorRole) i,
                         QColor(strlist[i]));
    }
    strlist = settings.value(QLatin1String("Palette/inactive")).toStringList();
    if (strlist.count() == QPalette::NColorRoles) {
        ++groupCount;
        for (i = 0; i < QPalette::NColorRoles; i++)
            pal.setColor(QPalette::Inactive, (QPalette::ColorRole) i,
                         QColor(strlist[i]));
    }
    strlist = settings.value(QLatin1String("Palette/disabled")).toStringList();
    if (strlist.count() == QPalette::NColorRoles) {
        ++groupCount;
        for (i = 0; i < QPalette::NColorRoles; i++)
            pal.setColor(QPalette::Disabled, (QPalette::ColorRole) i,
                         QColor(strlist[i]));
    }


    if (groupCount == QPalette::NColorGroups)
        QApplicationPrivate::setSystemPalette(pal);

    if (!qt_app_has_font) {
        QFont font(QApplication::font());
        QString str = settings.value(QLatin1String("font")).toString();
        if (!str.isEmpty()) {
            font.fromString(str);
            if (font != QApplication::font())
                QApplication::setFont(font);
        }
    }

    // read library (ie. plugin) path list
    QString libpathkey =
        QString(QLatin1String("%1.%2/libraryPath"))
        .arg(QT_VERSION >> 16)
        .arg((QT_VERSION & 0xff00) >> 8);
    QStringList pathlist = settings.value(libpathkey).toString().split(QLatin1Char(':'));
#ifndef QT_NO_LIBRARY
    if (! pathlist.isEmpty()) {
        QStringList::ConstIterator it = pathlist.constBegin();
        while (it != pathlist.constEnd())
            QApplication::addLibraryPath(*it++);
    }
#endif

    // read new QStyle
    QString stylename = settings.value(QLatin1String("style")).toString();
    if (QCoreApplication::startingUp()) {
        if (!stylename.isEmpty() && !QApplicationPrivate::styleOverride)
            QApplicationPrivate::styleOverride = new QString(stylename);
    } else {
        QApplication::setStyle(stylename);
    }

    int num =
        settings.value(QLatin1String("doubleClickInterval"),
                       QApplication::doubleClickInterval()).toInt();
    QApplication::setDoubleClickInterval(num);

    num =
        settings.value(QLatin1String("cursorFlashTime"),