C++ possiblyHasMarkers函数代码示例

void DocumentMarkerController::shiftMarkers(Node* node, unsigned startOffset, int delta)
{
    if (!possiblyHasMarkers(DocumentMarker::AllMarkers()))
        return;
    ASSERT(!m_markers.isEmpty());

    MarkerList* list = m_markers.get(node);
    if (!list)
        return;

    bool docDirty = false;
    for (size_t i = 0; i != list->size(); ) {
        RenderedDocumentMarker& marker = list->at(i);
#if PLATFORM(IOS)
        int targetStartOffset = marker.startOffset() + delta;
        int targetEndOffset = marker.endOffset() + delta;
        if (targetStartOffset >= node->maxCharacterOffset() || targetEndOffset <= 0) {
            list->remove(i);
            continue;
        }
#endif
        if (marker.startOffset() >= startOffset) {
            ASSERT((int)marker.startOffset() + delta >= 0);
            marker.shiftOffsets(delta);
            docDirty = true;

            // Marker moved, so previously-computed rendered rectangle is now invalid
            marker.invalidate();
#if !PLATFORM(IOS)
        }
#else
        // FIXME: Inserting text inside a DocumentMarker does not grow the marker.
        // See <https://bugs.webkit.org/show_bug.cgi?id=62504>.
        } else if (marker.endOffset() > startOffset) {

void DocumentMarkerController::shiftMarkers(Node* node, unsigned startOffset, int delta)
{
    if (!possiblyHasMarkers(DocumentMarker::AllMarkers()))
        return;
    ASSERT(!m_markers.isEmpty());

    MarkerLists* markers = m_markers.get(node);
    if (!markers)
        return;

    bool docDirty = false;
    for (size_t markerListIndex = 0; markerListIndex < DocumentMarker::MarkerTypeIndexesCount; ++markerListIndex) {
        OwnPtr<MarkerList>& list = (*markers)[markerListIndex];
        if (!list)
            continue;
        MarkerList::iterator startPos = std::lower_bound(list->begin(), list->end(), startOffset, startsAfter);
        for (MarkerList::iterator marker = startPos; marker != list->end(); ++marker) {
#if ENABLE(ASSERT)
            int startOffset = (*marker)->startOffset();
            ASSERT(startOffset + delta >= 0);
#endif
            (*marker)->shiftOffsets(delta);
            docDirty = true;

            // Marker moved, so previously-computed rendered rectangle is now invalid
            (*marker)->invalidate();
        }
    }

    // repaint the affected node
    if (docDirty && node->renderer())
        node->renderer()->doNotUseInvalidatePaintForWholeRendererSynchronously();
}

void DocumentMarkerController::updateRectsForInvalidatedMarkersOfType(DocumentMarker::MarkerType markerType)
{
    if (!possiblyHasMarkers(markerType))
        return;
    ASSERT(!(m_markers.isEmpty()));

    bool needsLayoutIfAnyRectsAreDirty = true;

    for (auto& nodeAndMarkers : m_markers) {
        Node& node = *nodeAndMarkers.key;
        for (auto& marker : *nodeAndMarkers.value) {
            if (marker.type() != markerType)
                continue;

            if (marker.isValid())
                continue;

            // We'll do up to one layout per call if we have any dirty markers.
            if (needsLayoutIfAnyRectsAreDirty) {
                updateMainFrameLayoutIfNeeded(m_document);
                needsLayoutIfAnyRectsAreDirty = false;
            }

            updateRenderedRectsForMarker(marker, node);
        }
    }
}

void DocumentMarkerController::repaintMarkers(DocumentMarker::MarkerTypes markerTypes)
{
    if (!possiblyHasMarkers(markerTypes))
        return;
    ASSERT(!m_markers.isEmpty());

    // outer loop: process each markered node in the document
    MarkerMap::iterator end = m_markers.end();
    for (MarkerMap::iterator i = m_markers.begin(); i != end; ++i) {
        const Node* node = i->key;

        // inner loop: process each marker in the current node
        MarkerLists* markers = i->value.get();
        for (size_t markerListIndex = 0; markerListIndex < DocumentMarker::MarkerTypeIndexesCount; ++markerListIndex) {
            OwnPtr<MarkerList>& list = (*markers)[markerListIndex];
            if (!list || list->isEmpty() || !markerTypes.contains((*list->begin())->type()))
                continue;

            // cause the node to be redrawn
            if (RenderObject* renderer = node->renderer()) {
                renderer->doNotUseInvalidatePaintForWholeRendererSynchronously();
                break;
            }
        }
    }
}

void DocumentMarkerController::repaintMarkers(DocumentMarker::MarkerTypes markerTypes)
{
    if (!possiblyHasMarkers(markerTypes))
        return;
    ASSERT(!m_markers.isEmpty());

    // outer loop: process each markered node in the document
    for (auto& marker : m_markers) {
        Node* node = marker.key.get();

        // inner loop: process each marker in the current node
        bool nodeNeedsRepaint = false;
        for (auto& documentMarker : *marker.value) {
            if (markerTypes.contains(documentMarker.type())) {
                nodeNeedsRepaint = true;
                break;
            }
        }

        if (!nodeNeedsRepaint)
            continue;

        // cause the node to be redrawn
        if (auto renderer = node->renderer())
            renderer->repaint();
    }
}

DocumentMarker* DocumentMarkerController::markerContainingPoint(const LayoutPoint& point, DocumentMarker::MarkerType markerType)
{
    if (!possiblyHasMarkers(markerType))
        return 0;
    ASSERT(!(m_markers.isEmpty()));

    // outer loop: process each node that contains any markers
    MarkerMap::iterator end = m_markers.end();
    for (MarkerMap::iterator nodeIterator = m_markers.begin(); nodeIterator != end; ++nodeIterator) {
        // inner loop; process each marker in this node
        MarkerList* list = nodeIterator->value.get();
        unsigned markerCount = list->size();
        for (unsigned markerIndex = 0; markerIndex < markerCount; ++markerIndex) {
            RenderedDocumentMarker& marker = list->at(markerIndex);

            // skip marker that is wrong type
            if (marker.type() != markerType)
                continue;

            if (marker.contains(point))
                return &marker;
        }
    }

    return 0;
}

Vector<IntRect> DocumentMarkerController::renderedRectsForMarkers(DocumentMarker::MarkerType markerType)
{
    Vector<IntRect> result;

    if (!possiblyHasMarkers(markerType))
        return result;
    ASSERT(!(m_markers.isEmpty()));

    // outer loop: process each node
    MarkerMap::iterator end = m_markers.end();
    for (MarkerMap::iterator nodeIterator = m_markers.begin(); nodeIterator != end; ++nodeIterator) {
        // inner loop; process each marker in this node
        MarkerList* list = nodeIterator->value.get();
        unsigned markerCount = list->size();
        for (unsigned markerIndex = 0; markerIndex < markerCount; ++markerIndex) {
            const RenderedDocumentMarker& marker = list->at(markerIndex);

            // skip marker that is wrong type
            if (marker.type() != markerType)
                continue;

            if (!marker.isRendered())
                continue;

            result.append(marker.renderedRect());
        }
    }

    return result;
}

Vector<IntRect> DocumentMarkerController::renderedRectsForMarkers(DocumentMarker::MarkerType markerType)
{
    Vector<IntRect> result;

    if (!possiblyHasMarkers(markerType))
        return result;
    ASSERT(!(m_markers.isEmpty()));

    // outer loop: process each node
    MarkerMap::iterator end = m_markers.end();
    for (MarkerMap::iterator nodeIterator = m_markers.begin(); nodeIterator != end; ++nodeIterator) {
        // inner loop; process each marker in this node
        MarkerLists* markers = nodeIterator->value.get();
        for (size_t markerListIndex = 0; markerListIndex < DocumentMarker::MarkerTypeIndexesCount; ++markerListIndex) {
            OwnPtr<MarkerList>& list = (*markers)[markerListIndex];
            if (!list || list->isEmpty() || (*list->begin())->type() != markerType)
                continue;
            for (unsigned markerIndex = 0; markerIndex < list->size(); ++markerIndex) {
                RenderedDocumentMarker* marker = list->at(markerIndex).get();
                if (!marker->isRendered())
                    continue;
                result.append(marker->renderedRect());
            }
        }
    }

    return result;
}

void DocumentMarkerController::repaintMarkers(DocumentMarker::MarkerTypes markerTypes)
{
    if (!possiblyHasMarkers(markerTypes))
        return;
    ASSERT(!m_markers.isEmpty());

    // outer loop: process each markered node in the document
    MarkerMap::iterator end = m_markers.end();
    for (MarkerMap::iterator i = m_markers.begin(); i != end; ++i) {
        Node* node = i->key.get();

        // inner loop: process each marker in the current node
        MarkerList* list = i->value.get();
        bool nodeNeedsRepaint = false;
        for (size_t i = 0; i != list->size(); ++i) {
            DocumentMarker marker = list->at(i);

            // skip nodes that are not of the specified type
            if (markerTypes.contains(marker.type())) {
                nodeNeedsRepaint = true;
                break;
            }
        }

        if (!nodeNeedsRepaint)
            continue;

        // cause the node to be redrawn
        if (auto renderer = node->renderer())
            renderer->repaint();
    }
}

void DocumentMarkerController::removeMarkers(Node* node, DocumentMarker::MarkerTypes markerTypes)
{
    if (!possiblyHasMarkers(markerTypes))
        return;
    ASSERT(!m_markers.isEmpty());
    
    MarkerMap::iterator iterator = m_markers.find(node);
    if (iterator != m_markers.end())
        removeMarkersFromList(iterator, markerTypes);
}

Vector<FloatRect> DocumentMarkerController::renderedRectsForMarkers(DocumentMarker::MarkerType markerType)
{
    Vector<FloatRect> result;

    if (!possiblyHasMarkers(markerType))
        return result;
    ASSERT(!(m_markers.isEmpty()));

    Frame* frame = m_document.frame();
    if (!frame)
        return result;
    FrameView* frameView = frame->view();
    if (!frameView)
        return result;

    updateRectsForInvalidatedMarkersOfType(markerType);

    bool isSubframe = !frame->isMainFrame();
    IntRect subframeClipRect;
    if (isSubframe)
        subframeClipRect = frameView->windowToContents(frameView->windowClipRect());

    for (auto& nodeAndMarkers : m_markers) {
        Node& node = *nodeAndMarkers.key;
        FloatRect overflowClipRect;
        if (RenderObject* renderer = node.renderer())
            overflowClipRect = renderer->absoluteClippedOverflowRect();
        for (auto& marker : *nodeAndMarkers.value) {
            if (marker.type() != markerType)
                continue;

            auto renderedRects = marker.unclippedAbsoluteRects();

            // Clip document markers by their overflow clip.
            if (node.renderer()) {
                for (auto& rect : renderedRects)
                    rect.intersect(overflowClipRect);
            }

            // Clip subframe document markers by their frame.
            if (isSubframe) {
                for (auto& rect : renderedRects)
                    rect.intersect(subframeClipRect);
            }

            for (const auto& rect : renderedRects) {
                if (!rect.isEmpty())
                    result.append(rect);
            }
        }
    }
    
    return result;
}

void DocumentMarkerController::removeMarkers(DocumentMarker::MarkerTypes markerTypes)
{
    if (!possiblyHasMarkers(markerTypes))
        return;
    ASSERT(!m_markers.isEmpty());

    Vector<RefPtr<Node>> nodesWithMarkers;
    copyKeysToVector(m_markers, nodesWithMarkers);
    for (auto& node : nodesWithMarkers) {
        auto iterator = m_markers.find(node);
        if (iterator != m_markers.end())
            removeMarkersFromList(iterator, markerTypes);
    }

    m_possiblyExistingMarkerTypes.remove(markerTypes);
}

// copies markers from srcNode to dstNode, applying the specified shift delta to the copies.  The shift is
// useful if, e.g., the caller has created the dstNode from a non-prefix substring of the srcNode.
void DocumentMarkerController::copyMarkers(Node* srcNode, unsigned startOffset, int length, Node* dstNode, int delta)
{
    if (length <= 0)
        return;

    if (!possiblyHasMarkers(DocumentMarker::AllMarkers()))
        return;
    ASSERT(!m_markers.isEmpty());

    MarkerLists* markers = m_markers.get(srcNode);
    if (!markers)
        return;

    bool docDirty = false;
    for (size_t markerListIndex = 0; markerListIndex < DocumentMarker::MarkerTypeIndexesCount; ++markerListIndex) {
        OwnPtr<MarkerList>& list = (*markers)[markerListIndex];
        if (!list)
            continue;

        unsigned endOffset = startOffset + length - 1;
        MarkerList::iterator startPos = std::lower_bound(list->begin(), list->end(), startOffset, doesNotInclude);
        for (MarkerList::iterator i = startPos; i != list->end(); ++i) {
            DocumentMarker* marker = i->get();

            // stop if we are now past the specified range
            if (marker->startOffset() > endOffset)
                break;

            // pin the marker to the specified range and apply the shift delta
            docDirty = true;
            if (marker->startOffset() < startOffset)
                marker->setStartOffset(startOffset);
            if (marker->endOffset() > endOffset)
                marker->setEndOffset(endOffset);
            marker->shiftOffsets(delta);

            addMarker(dstNode, *marker);
        }
    }

    // repaint the affected node
    if (docDirty && dstNode->renderer())
        dstNode->renderer()->doNotUseInvalidatePaintForWholeRendererSynchronously();
}

DocumentMarker* DocumentMarkerController::markerContainingPoint(const LayoutPoint& point, DocumentMarker::MarkerType markerType)
{
    if (!possiblyHasMarkers(markerType))
        return nullptr;
    ASSERT(!(m_markers.isEmpty()));

    updateRectsForInvalidatedMarkersOfType(markerType);

    for (auto& nodeAndMarkers : m_markers) {
        for (auto& marker : *nodeAndMarkers.value) {
            if (marker.type() != markerType)
                continue;

            if (marker.contains(point))
                return ▮
        }
    }

    return nullptr;
}

// copies markers from srcNode to dstNode, applying the specified shift delta to the copies.  The shift is
// useful if, e.g., the caller has created the dstNode from a non-prefix substring of the srcNode.
void DocumentMarkerController::copyMarkers(Node* srcNode, unsigned startOffset, int length, Node* dstNode, int delta)
{
    if (length <= 0)
        return;

    if (!possiblyHasMarkers(DocumentMarker::AllMarkers()))
        return;
    ASSERT(!m_markers.isEmpty());

    MarkerList* list = m_markers.get(srcNode);
    if (!list)
        return;

    bool docDirty = false;
    unsigned endOffset = startOffset + length - 1;
    for (size_t i = 0; i != list->size(); ++i) {
        DocumentMarker marker = list->at(i);

        // stop if we are now past the specified range
        if (marker.startOffset() > endOffset)
            break;

        // skip marker that is before the specified range or is the wrong type
        if (marker.endOffset() < startOffset)
            continue;

        // pin the marker to the specified range and apply the shift delta
        docDirty = true;
        if (marker.startOffset() < startOffset)
            marker.setStartOffset(startOffset);
        if (marker.endOffset() > endOffset)
            marker.setEndOffset(endOffset);
        marker.shiftOffsets(delta);

        addMarker(dstNode, marker);
    }

    // repaint the affected node
    if (docDirty && dstNode->renderer())
        dstNode->renderer()->repaint();
}