C++ (Cpp) clampedOffset Examples

Example #1

File: SVGInlineTextBox.cpp Project: Comcast/WebKitForWayland

LayoutRect SVGInlineTextBox::localSelectionRect(unsigned startPosition, unsigned endPosition) const
{
    startPosition = clampedOffset(startPosition);
    endPosition = clampedOffset(endPosition);
    if (startPosition >= endPosition)
        return LayoutRect();

    auto& style = renderer().style();

    AffineTransform fragmentTransform;
    FloatRect selectionRect;
    unsigned fragmentStartPosition = 0;
    unsigned fragmentEndPosition = 0;

    unsigned textFragmentsSize = m_textFragments.size();
    for (unsigned i = 0; i < textFragmentsSize; ++i) {
        const SVGTextFragment& fragment = m_textFragments.at(i);

        fragmentStartPosition = startPosition;
        fragmentEndPosition = endPosition;
        if (!mapStartEndPositionsIntoFragmentCoordinates(fragment, fragmentStartPosition, fragmentEndPosition))
            continue;

        FloatRect fragmentRect = selectionRectForTextFragment(fragment, fragmentStartPosition, fragmentEndPosition, &style);
        fragment.buildFragmentTransform(fragmentTransform);
        if (!fragmentTransform.isIdentity())
            fragmentRect = fragmentTransform.mapRect(fragmentRect);

        selectionRect.unite(fragmentRect);
    }

    return enclosingIntRect(selectionRect);
}

Example #2

File: PinchViewport.cpp Project: ewilligers/blink

FloatPoint PinchViewport::clampOffsetToBoundaries(const FloatPoint& offset)
{
    FloatPoint clampedOffset(offset);
    clampedOffset = clampedOffset.shrunkTo(FloatPoint(maximumScrollPosition()));
    clampedOffset = clampedOffset.expandedTo(FloatPoint(minimumScrollPosition()));
    return clampedOffset;
}

Example #3

File: PinchViewport.cpp Project: ewilligers/blink

void PinchViewport::setLocation(const FloatPoint& newLocation)
{
    FloatPoint clampedOffset(clampOffsetToBoundaries(newLocation));

    if (clampedOffset == m_offset)
        return;

    m_offset = clampedOffset;

    ScrollingCoordinator* coordinator = m_frameHost.page().scrollingCoordinator();
    ASSERT(coordinator);
    coordinator->scrollableAreaScrollLayerDidChange(this);

    mainFrame()->loader().saveScrollState();
}

Example #4

File: VisualViewport.cpp Project: shaoboyan/chromium-crosswalk

void VisualViewport::setScaleAndLocation(float scale, const FloatPoint& location)
{
    if (!mainFrame())
        return;

    bool valuesChanged = false;

    if (scale != m_scale) {
        m_scale = scale;
        valuesChanged = true;
        frameHost().chromeClient().pageScaleFactorChanged();
    }

    FloatPoint clampedOffset(clampOffsetToBoundaries(location));

    if (clampedOffset != m_offset) {
        m_offset = clampedOffset;
        scrollAnimator()->setCurrentPosition(m_offset);

        // SVG runs with accelerated compositing disabled so no ScrollingCoordinator.
        if (ScrollingCoordinator* coordinator = frameHost().page().scrollingCoordinator())
            coordinator->scrollableAreaScrollLayerDidChange(this);

        if (!frameHost().settings().inertVisualViewport()) {
            if (Document* document = mainFrame()->document())
                document->enqueueScrollEventForNode(document);
        }

        mainFrame()->loader().client()->didChangeScrollOffset();
        valuesChanged = true;
    }

    if (!valuesChanged)
        return;

    InspectorInstrumentation::didUpdateLayout(mainFrame());
    mainFrame()->loader().saveScrollState();

    clampToBoundaries();
}