C++ (Cpp) ConstIterator Examples

Example #1

File: qtgradientstopscontroller.cpp Project: fluxer/katie

QtGradientStopsControllerPrivate::PositionColorMap QtGradientStopsControllerPrivate::stopsData(const PositionStopMap &stops) const
{
    PositionColorMap data;
    PositionStopMap::ConstIterator itStop = stops.constBegin();
    while (itStop != stops.constEnd()) {
        QtGradientStop *stop = itStop.value();
        data[stop->position()] = stop->color();

        ++itStop;
    }
    return data;
}

Example #2

File: qtgradientstopsmodel.cpp Project: wpbest/copperspice

QtGradientStop *QtGradientStopsModel::firstSelected() const
{
    PositionStopMap stopList = stops();
    PositionStopMap::ConstIterator itStop = stopList.constBegin();
    while (itStop != stopList.constEnd()) {
        QtGradientStop *stop = itStop.value();
        if (isSelected(stop))
            return stop;
        ++itStop;
    };
    return 0;
}

Example #3

File: qtgradientstopsmodel.cpp Project: wpbest/copperspice

QColor QtGradientStopsModel::color(qreal pos) const
{
    PositionStopMap gradStops = stops();
    if (gradStops.isEmpty())
        return QColor::fromRgbF(pos, pos, pos, 1.0);
    if (gradStops.contains(pos))
        return gradStops[pos]->color();

    gradStops[pos] = 0;
    PositionStopMap::ConstIterator itStop = gradStops.constFind(pos);
    if (itStop == gradStops.constBegin()) {
        ++itStop;
        return itStop.value()->color();
    }
    if (itStop == --gradStops.constEnd()) {
        --itStop;
        return itStop.value()->color();
    }
    PositionStopMap::ConstIterator itPrev = itStop;
    PositionStopMap::ConstIterator itNext = itStop;
    --itPrev;
    ++itNext;

    double prevX = itPrev.key();
    double nextX = itNext.key();

    double coefX = (pos - prevX) / (nextX - prevX);
    QColor prevCol = itPrev.value()->color();
    QColor nextCol = itNext.value()->color();

    QColor newColor;
    newColor.setRgbF((nextCol.redF()   - prevCol.redF()  ) * coefX + prevCol.redF(),
                     (nextCol.greenF() - prevCol.greenF()) * coefX + prevCol.greenF(),
                     (nextCol.blueF()  - prevCol.blueF() ) * coefX + prevCol.blueF(),
                     (nextCol.alphaF() - prevCol.alphaF()) * coefX + prevCol.alphaF());
    return newColor;
}

Example #4

File: qtgradientstopsmodel.cpp Project: wpbest/copperspice

void QtGradientStopsModel::moveStops(double newPosition)
{
    QtGradientStop *current = currentStop();
    if (!current)
        return;

    double newPos = newPosition;

    if (newPos > 1)
        newPos = 1;
    else if (newPos < 0)
        newPos = 0;

    if (newPos == current->position())
        return;

    double offset = newPos - current->position();

    QtGradientStop *first = firstSelected();
    QtGradientStop *last = lastSelected();

    if (first && last) { // multiselection
        double maxOffset = 1.0 - last->position();
        double minOffset = -first->position();

        if (offset > maxOffset)
            offset = maxOffset;
        else if (offset < minOffset)
            offset = minOffset;

    }

    if (offset == 0)
        return;

    bool forward = (offset > 0) ? false : true;

    PositionStopMap stopList;

    QList<QtGradientStop *> selected = selectedStops();
    QListIterator<QtGradientStop *> it(selected);
    while (it.hasNext()) {
        QtGradientStop *stop = it.next();
        stopList[stop->position()] = stop;
    }
    stopList[current->position()] = current;

    PositionStopMap::ConstIterator itStop = forward ? stopList.constBegin() : stopList.constEnd();
    while (itStop != (forward ? stopList.constEnd() : stopList.constBegin())) {
        if (!forward)
            --itStop;
        QtGradientStop *stop = itStop.value();
            double pos = stop->position() + offset;
            if (pos > 1)
                pos = 1;
            if (pos < 0)
                pos = 0;

            if (current == stop)
                pos = newPos;

            QtGradientStop *oldStop = at(pos);
            if (oldStop && !stopList.values().contains(oldStop))
                removeStop(oldStop);
            moveStop(stop, pos);

        if (forward)
            ++itStop;
    }
}