C++ Q_ASSERT函数代码示例

iconv_t QIconvCodec::createIconv_t(const char *to, const char *from)
{
    Q_ASSERT((to == 0 && from != 0) || (to != 0 && from == 0));

    iconv_t cd = (iconv_t) -1;
#if defined(__GLIBC__) || defined(GNU_LIBICONV)
    // both GLIBC and libgnuiconv will use the locale's encoding if from or to is an empty string
    static const char empty_codeset[] = "";
    const char *codeset = empty_codeset;
    cd = iconv_open(to ? to : codeset, from ? from : codeset);
#else
    char *codeset = 0;
#endif

#if defined(_XOPEN_UNIX) && !defined(Q_OS_QNX6) && !defined(Q_OS_OSF)
    if (cd == (iconv_t) -1) {
        codeset = nl_langinfo(CODESET);
        if (codeset)
            cd = iconv_open(to ? to : codeset, from ? from : codeset);
    }
#endif

    if (cd == (iconv_t) -1) {
        // Very poorly defined and followed standards causes lots of
        // code to try to get all the cases... This logic is
        // duplicated in QTextCodec, so if you change it here, change
        // it there too.

        // Try to determine locale codeset from locale name assigned to
        // LC_CTYPE category.

        // First part is getting that locale name.  First try setlocale() which
        // definitely knows it, but since we cannot fully trust it, get ready
        // to fall back to environment variables.
        char * ctype = qstrdup(setlocale(LC_CTYPE, 0));

        // Get the first nonempty value from $LC_ALL, $LC_CTYPE, and $LANG
        // environment variables.
        char * lang = qstrdup(qgetenv("LC_ALL").constData());
        if (!lang || lang[0] == 0 || strcmp(lang, "C") == 0) {
            if (lang) delete [] lang;
            lang = qstrdup(qgetenv("LC_CTYPE").constData());
        }
        if (!lang || lang[0] == 0 || strcmp(lang, "C") == 0) {
            if (lang) delete [] lang;
            lang = qstrdup(qgetenv("LANG").constData());
        }

        // Now try these in order:
        // 1. CODESET from ctype if it contains a .CODESET part (e.g. en_US.ISO8859-15)
        // 2. CODESET from lang if it contains a .CODESET part
        // 3. ctype (maybe the locale is named "ISO-8859-1" or something)
        // 4. locale (ditto)
        // 5. check for "@euro"

        // 1. CODESET from ctype if it contains a .CODESET part (e.g. en_US.ISO8859-15)
        codeset = ctype ? strchr(ctype, '.') : 0;
        if (codeset && *codeset == '.') {
            ++codeset;
            cd = iconv_open(to ? to : codeset, from ? from : codeset);
        }

        // 2. CODESET from lang if it contains a .CODESET part
        codeset = lang ? strchr(lang, '.') : 0;
        if (cd == (iconv_t) -1 && codeset && *codeset == '.') {
            ++codeset;
            cd = iconv_open(to ? to : codeset, from ? from : codeset);
        }

        // 3. ctype (maybe the locale is named "ISO-8859-1" or something)
        if (cd == (iconv_t) -1 && ctype && *ctype != 0 && strcmp (ctype, "C") != 0)
            cd = iconv_open(to ? to : ctype, from ? from : ctype);


        // 4. locale (ditto)
        if (cd == (iconv_t) -1 && lang && *lang != 0)
            cd = iconv_open(to ? to : lang, from ? from : lang);

        // 5. "@euro"
        if ((cd == (iconv_t) -1 && ctype && strstr(ctype, "@euro")) || (lang && strstr(lang, "@euro")))
            cd = iconv_open(to ? to : "ISO8859-15", from ? from : "ISO8859-15");

        delete [] ctype;
        delete [] lang;
    }

    return cd;
}

bool QTemporaryFileEngine::open(QIODevice::OpenMode openMode)
{
    Q_D(QFSFileEngine);
    Q_ASSERT(!isReallyOpen());

    openMode |= QIODevice::ReadWrite;

    if (!filePathIsTemplate)
        return QFSFileEngine::open(openMode);

    QString qfilename = d->fileEntry.filePath();

    // Ensure there is a placeholder mask
    uint phPos = qfilename.length();
    uint phLength = 0;

    while (phPos != 0) {
        --phPos;

        if (qfilename[phPos] == QLatin1Char('X')) {
            ++phLength;
            continue;
        }

        if (phLength >= 6
                || qfilename[phPos] == QLatin1Char('/')) {
            ++phPos;
            break;
        }

        // start over
        phLength = 0;
    }

    if (phLength < 6)
        qfilename.append(QLatin1String(".XXXXXX"));

    // "Nativify" :-)
    QFileSystemEntry::NativePath filename = QFileSystemEngine::absoluteName(
            QFileSystemEntry(qfilename, QFileSystemEntry::FromInternalPath()))
        .nativeFilePath();

    // Find mask in native path
    phPos = filename.length();
    phLength = 0;
    while (phPos != 0) {
        --phPos;

        if (filename[phPos] == Latin1Char('X')) {
            ++phLength;
            continue;
        }

        if (phLength >= 6) {
            ++phPos;
            break;
        }

        // start over
        phLength = 0;
    }

    Q_ASSERT(phLength >= 6);

    QSystemError error;
#if defined(Q_OS_WIN)
    NativeFileHandle &file = d->fileHandle;
#else // POSIX
    NativeFileHandle &file = d->fd;
#endif

    if (!createFileFromTemplate(file, filename, phPos, phLength, error)) {
        setError(QFile::OpenError, error.toString());
        return false;
    }

    d->fileEntry = QFileSystemEntry(filename, QFileSystemEntry::FromNativePath());

#if !defined(Q_OS_WIN)
    d->closeFileHandle = true;
#endif

    filePathIsTemplate = false;

    d->openMode = openMode;
    d->lastFlushFailed = false;
    d->tried_stat = 0;

    return true;
}

GrandMaster::ValueMode InputOutputMap::grandMasterValueMode()
{
    Q_ASSERT(m_grandMaster != NULL);

    return m_grandMaster->valueMode();
}

void FullScreenContent::showOptionsMenu()
{
    Q_ASSERT(!mConfigWidget);

    mConfigWidget = new FullScreenConfigWidget;
    FullScreenConfigWidget* widget = mConfigWidget;

    // Put widget in a menu
    QMenu menu;
    QWidgetAction* action = new QWidgetAction(&menu);
    action->setDefaultWidget(widget);
    menu.addAction(action);

    // Slideshow checkboxes
    widget->mSlideShowLoopCheckBox->setChecked(mSlideShow->loopAction()->isChecked());
    connect(widget->mSlideShowLoopCheckBox, SIGNAL(toggled(bool)),
            mSlideShow->loopAction(), SLOT(trigger()));

    widget->mSlideShowRandomCheckBox->setChecked(mSlideShow->randomAction()->isChecked());
    connect(widget->mSlideShowRandomCheckBox, SIGNAL(toggled(bool)),
            mSlideShow->randomAction(), SLOT(trigger()));

    // Interval slider
    widget->mSlideShowIntervalSlider->setValue(int(GwenviewConfig::interval()));
    connect(widget->mSlideShowIntervalSlider, SIGNAL(valueChanged(int)),
            mSlideShow, SLOT(setInterval(int)));
    connect(widget->mSlideShowIntervalSlider, SIGNAL(valueChanged(int)),
            SLOT(updateSlideShowIntervalLabel()));

    // Interval label
    QString text = formatSlideShowIntervalText(88);
    int width = widget->mSlideShowIntervalLabel->fontMetrics().width(text);
    widget->mSlideShowIntervalLabel->setFixedWidth(width);
    updateSlideShowIntervalLabel();

    // Image information
    connect(widget->mConfigureDisplayedInformationButton, SIGNAL(clicked()),
            SLOT(showImageMetaInfoDialog()));

    // Thumbnails
    widget->mThumbnailGroupBox->setVisible(mViewPageVisible);
    if (mViewPageVisible) {
        widget->mShowThumbnailsCheckBox->setChecked(GwenviewConfig::showFullScreenThumbnails());
        widget->mHeightSlider->setMinimum(mRightToolBar->sizeHint().height());
        widget->mHeightSlider->setValue(mThumbnailBar->height());
        connect(widget->mShowThumbnailsCheckBox, SIGNAL(toggled(bool)),
                SLOT(slotShowThumbnailsToggled(bool)));
        connect(widget->mHeightSlider, SIGNAL(valueChanged(int)),
                SLOT(setFullScreenBarHeight(int)));
    }

    // Show menu below its button
    QPoint pos;
    QWidget* button = mOptionsAction->associatedWidgets().first();
    Q_ASSERT(button);
    qWarning() << button << button->geometry();
    if (QApplication::isRightToLeft()) {
        pos = button->mapToGlobal(button->rect().bottomLeft());
    } else {
        pos = button->mapToGlobal(button->rect().bottomRight());
        pos.rx() -= menu.sizeHint().width();
    }
    qWarning() << pos;
    menu.exec(pos);
}

// from bool QApplicationPrivate::translateTouchEvent()
bool QWindowsMouseHandler::translateTouchEvent(QWindow *window, HWND,
                                               QtWindows::WindowsEventType,
                                               MSG msg, LRESULT *)
{
#ifndef Q_OS_WINCE
    typedef QWindowSystemInterface::TouchPoint QTouchPoint;
    typedef QList<QWindowSystemInterface::TouchPoint> QTouchPointList;

    const QRect screenGeometry = window->screen()->geometry();

    const int winTouchPointCount = msg.wParam;
    QScopedArrayPointer<TOUCHINPUT> winTouchInputs(new TOUCHINPUT[winTouchPointCount]);
    memset(winTouchInputs.data(), 0, sizeof(TOUCHINPUT) * winTouchPointCount);

    QTouchPointList touchPoints;
    touchPoints.reserve(winTouchPointCount);
    Qt::TouchPointStates allStates = 0;

    Q_ASSERT(QWindowsContext::user32dll.getTouchInputInfo);

    QWindowsContext::user32dll.getTouchInputInfo((HANDLE) msg.lParam, msg.wParam, winTouchInputs.data(), sizeof(TOUCHINPUT));
    for (int i = 0; i < winTouchPointCount; ++i) {
        const TOUCHINPUT &winTouchInput = winTouchInputs[i];
        int id = m_touchInputIDToTouchPointID.value(winTouchInput.dwID, -1);
        if (id == -1) {
            id = m_touchInputIDToTouchPointID.size();
            m_touchInputIDToTouchPointID.insert(winTouchInput.dwID, id);
        }
        QTouchPoint touchPoint;
        touchPoint.pressure = 1.0;
        touchPoint.id = id;
        if (m_lastTouchPositions.contains(id))
            touchPoint.normalPosition = m_lastTouchPositions.value(id);

        QPointF screenPos = QPointF(qreal(winTouchInput.x) / qreal(100.), qreal(winTouchInput.y) / qreal(100.));
        if (winTouchInput.dwMask & TOUCHINPUTMASKF_CONTACTAREA)
            touchPoint.area.setSize(QSizeF(qreal(winTouchInput.cxContact) / qreal(100.),
                                           qreal(winTouchInput.cyContact) / qreal(100.)));
        touchPoint.area.moveCenter(screenPos);
        QPointF normalPosition = QPointF(screenPos.x() / screenGeometry.width(),
                                         screenPos.y() / screenGeometry.height());
        const bool stationaryTouchPoint = (normalPosition == touchPoint.normalPosition);
        touchPoint.normalPosition = normalPosition;

        if (winTouchInput.dwFlags & TOUCHEVENTF_DOWN) {
            touchPoint.state = Qt::TouchPointPressed;
            m_lastTouchPositions.insert(id, touchPoint.normalPosition);
        } else if (winTouchInput.dwFlags & TOUCHEVENTF_UP) {
            touchPoint.state = Qt::TouchPointReleased;
            m_lastTouchPositions.remove(id);
        } else {
            touchPoint.state = (stationaryTouchPoint
                     ? Qt::TouchPointStationary
                     : Qt::TouchPointMoved);
            m_lastTouchPositions.insert(id, touchPoint.normalPosition);
        }

        allStates |= touchPoint.state;

        touchPoints.append(touchPoint);
    }

    QWindowsContext::user32dll.closeTouchInputHandle((HANDLE) msg.lParam);

    // all touch points released, forget the ids we've seen, they may not be reused
    if (allStates == Qt::TouchPointReleased)
        m_touchInputIDToTouchPointID.clear();

    if (!m_touchDevice) {
        m_touchDevice = new QTouchDevice;
        // TODO: Device used to be hardcoded to screen in previous code.
        m_touchDevice->setType(QTouchDevice::TouchScreen);
        m_touchDevice->setCapabilities(QTouchDevice::Position | QTouchDevice::Area | QTouchDevice::NormalizedPosition);
        QWindowSystemInterface::registerTouchDevice(m_touchDevice);
    }

    QWindowSystemInterface::handleTouchEvent(window,
                                             m_touchDevice,
                                             touchPoints);
    return true;
#else
    return false;
#endif
}

void InternalNodeListProperty::remove(const InternalNodePointer &internalNode)
{
    Q_ASSERT(m_nodeList.contains(internalNode));
    m_nodeList.removeAll(internalNode);
}

vtkResliceImageViewer* medResliceViewer::getResliceImageViewer(int i)
{
    Q_ASSERT(0 <= i <= 3);

    return riw[i];
}

bool ShrinkToFitShapeContainerModel::isChildLocked(const KoShape *child) const
{
    Q_ASSERT(child == d->childShape); Q_UNUSED(child);
    return true;
}

KarbonOutlinePaintingStrategy::KarbonOutlinePaintingStrategy( KoShapeManager * shapeManager )
    : KoShapeManagerPaintingStrategy( shapeManager ), m_border( new OutlineStroke() )
{
    Q_ASSERT( shapeManager );
    shapeManager->setPaintingStrategy( this );
}

// moz: [important, but no need to implement up/down/left/right]
HRESULT STDMETHODCALLTYPE QWindowsMsaaAccessible::accNavigate(long navDir, VARIANT varStart, VARIANT *pvarEnd)
{
    QAccessibleInterface *accessible = accessibleInterface();
    accessibleDebugClientCalls(accessible);
    if (!accessible)
        return E_FAIL;

    QAccessibleInterface *acc = 0;
    switch (navDir) {
    case NAVDIR_FIRSTCHILD:
        acc = accessible->child(0);
        break;
    case NAVDIR_LASTCHILD:
        acc = accessible->child(accessible->childCount() - 1);
        break;
    case NAVDIR_NEXT:
    case NAVDIR_PREVIOUS:
        if (!varStart.lVal) {
            QAccessibleInterface *parent = accessible->parent();
            if (parent && parent->isValid()) {
                int index = parent->indexOfChild(accessible);
                index += (navDir == NAVDIR_NEXT) ? 1 : -1;
                if (index >= 0 && index < parent->childCount())
                    acc = parent->child(index);
            }
        } else {
            int index = varStart.lVal;
            index += (navDir == NAVDIR_NEXT) ? 1 : -1;
            if (index > 0 && index <= accessible->childCount())
                acc = accessible->child(index - 1);
        }
        break;

    // Geometrical
    case NAVDIR_UP:
    case NAVDIR_DOWN:
    case NAVDIR_LEFT:
    case NAVDIR_RIGHT: {
        QAccessibleInterface *pIface = accessible->parent();
        if (pIface && pIface->isValid()) {
            const int indexOfOurself = pIface->indexOfChild(accessible);
            QRect startg = accessible->rect();
            QPoint startc = startg.center();
            QAccessibleInterface *candidate = 0;
            unsigned mindist = UINT_MAX;    // will work on screen sizes at least up to 46340x46340
            const int sibCount = pIface->childCount();
            for (int i = 0; i < sibCount; ++i) {
                QAccessibleInterface *sibling = 0;
                sibling = pIface->child(i);
                Q_ASSERT(sibling);
                if (i == indexOfOurself || sibling->state().invisible) {
                    //ignore ourself and invisible siblings
                    continue;
                }

                QRect sibg = sibling->rect();
                QPoint sibc = sibg.center();
                QPoint sibp;
                QPoint startp;
                QPoint distp;
                switch (navDir) {
                case NAVDIR_LEFT:
                    startp = QPoint(startg.left(), startg.top() + startg.height() / 2);
                    sibp = QPoint(sibg.right(), sibg.top() + sibg.height() / 2);
                    if (QPoint(sibc - startc).x() >= 0) {
                        continue;
                    }
                    distp = sibp - startp;
                    break;
                case NAVDIR_RIGHT:
                    startp = QPoint(startg.right(), startg.top() + startg.height() / 2);
                    sibp = QPoint(sibg.left(), sibg.top() + sibg.height() / 2);
                    if (QPoint(sibc - startc).x() <= 0) {
                        continue;
                    }
                    distp = sibp - startp;
                    break;
                case NAVDIR_UP:
                    startp = QPoint(startg.left() + startg.width() / 2, startg.top());
                    sibp = QPoint(sibg.left() + sibg.width() / 2, sibg.bottom());
                    if (QPoint(sibc - startc).y() >= 0) {
                        continue;
                    }
                    distp = sibp - startp;
                    break;
                case NAVDIR_DOWN:
                    startp = QPoint(startg.left() + startg.width() / 2, startg.bottom());
                    sibp = QPoint(sibg.left() + sibg.width() / 2, sibg.top());
                    if (QPoint(sibc - startc).y() <= 0) {
                        continue;
                    }
                    distp = sibp - startp;
                    break;
                default:
                    break;
                }

                // Since we're *comparing* (and not measuring) distances, we can compare the
                // squared distance, (thus, no need to take the sqrt()).
//.........这里部分代码省略.........

void KateFadeEffect::opacityChanged(qreal value)
{
  Q_ASSERT(m_effect);
  m_effect->setOpacity(value);
}

void KisSobelFilter::process(KisPaintDeviceSP device,
                            const QRect& applyRect,
                            const KisFilterConfiguration* configuration,
                            KoUpdater* progressUpdater
                            ) const
{
    QPoint srcTopLeft = applyRect.topLeft();
    Q_ASSERT(!device.isNull());

    //read the filter configuration values from the KisFilterConfiguration object
    bool doHorizontal = configuration->getBool("doHorizontally", true);
    bool doVertical = configuration->getBool("doVertically", true);
    bool keepSign = configuration->getBool("keepSign", true);
    bool makeOpaque = configuration->getBool("makeOpaque", true);

    quint32 width = applyRect.width();
    quint32 height = applyRect.height();
    quint32 pixelSize = device->pixelSize();

    int cost = applyRect.height();

    /*  allocate row buffers  */
    quint8* prevRow = new quint8[(width + 2) * pixelSize];
    Q_CHECK_PTR(prevRow);
    quint8* curRow = new quint8[(width + 2) * pixelSize];
    Q_CHECK_PTR(curRow);
    quint8* nextRow = new quint8[(width + 2) * pixelSize];
    Q_CHECK_PTR(nextRow);
    quint8* dest = new quint8[ width  * pixelSize];
    Q_CHECK_PTR(dest);

    quint8* pr = prevRow + pixelSize;
    quint8* cr = curRow + pixelSize;
    quint8* nr = nextRow + pixelSize;

    prepareRow(device, pr, srcTopLeft.x(), srcTopLeft.y() - 1, width, height);
    prepareRow(device, cr, srcTopLeft.x(), srcTopLeft.y(), width, height);

    quint32 counter = 0;
    quint8* d;
    quint8* tmp;
    qint32 gradient, horGradient, verGradient;
    // loop through the rows, applying the sobel convolution

    KisHLineIteratorSP dstIt = device->createHLineIteratorNG(srcTopLeft.x(), srcTopLeft.y(), width);

    for (quint32 row = 0; row < height; row++) {

        // prepare the next row
        prepareRow(device, nr, srcTopLeft.x(), srcTopLeft.y() + row + 1, width, height);
        d = dest;

        for (quint32 col = 0; col < width * pixelSize; col++) {
            int positive = col + pixelSize;
            int negative = col - pixelSize;
            horGradient = (doHorizontal ?
                           ((pr[negative] +  2 * pr[col] + pr[positive]) -
                            (nr[negative] + 2 * nr[col] + nr[positive]))
                           : 0);

            verGradient = (doVertical ?
                           ((pr[negative] + 2 * cr[negative] + nr[negative]) -
                            (pr[positive] + 2 * cr[positive] + nr[positive]))
                           : 0);
            gradient = (qint32)((doVertical && doHorizontal) ?
                                (ROUND(RMS(horGradient, verGradient)) / 5.66)   // always >0
                                : (keepSign ? (127 + (ROUND((horGradient + verGradient) / 8.0)))
                                   : (ROUND(qAbs(horGradient + verGradient) / 4.0))));

            *d++ = gradient;
            if (gradient > 10) counter ++;
        }

        //  shuffle the row pointers
        tmp = pr;
        pr = cr;
        cr = nr;
        nr = tmp;

        //store the dest
        device->writeBytes(dest, srcTopLeft.x(), row, width, 1);

        if (makeOpaque) {
            do {
                device->colorSpace()->setOpacity(dstIt->rawData(), OPACITY_OPAQUE_U8, 1);
            } while(dstIt->nextPixel());
            dstIt->nextRow();
        }
        if (progressUpdater) progressUpdater->setProgress(row / cost);
    }

    delete[] prevRow;
    delete[] curRow;
    delete[] nextRow;
    delete[] dest;
}

void KisShapeLayerCanvas::addCommand(KUndo2Command *)
{
    Q_ASSERT(false); // This should never be called as this canvas should have no tools.
}

bool Acl::watchNB(QString calendarId)
{
    // TODO: Implement.
    Q_UNUSED(calendarId);
    Q_ASSERT(false);
}

void GLC_PullManipulator::setPullingDirection(const GLC_Vector3d& pullingDirection)
{
	Q_ASSERT(!GLC_AbstractManipulator::isInManipulateState());
	m_PullDirection= pullingDirection;
}