xref: /external/chromium_org/third_party/WebKit/Source/platform/scroll/FramelessScrollView.cpp

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#include "config.h"
#include "platform/scroll/FramelessScrollView.h"

#include "platform/scroll/FramelessScrollViewClient.h"

namespace WebCore {

FramelessScrollView::~FramelessScrollView()
{
    // Remove native scrollbars now before we lose the connection to the HostWindow.
    setHasHorizontalScrollbar(false);
    setHasVerticalScrollbar(false);
}

void FramelessScrollView::invalidateScrollbarRect(Scrollbar* scrollbar, const IntRect& rect)
{
    // Add in our offset within the ScrollView.
    IntRect dirtyRect = rect;
    dirtyRect.move(scrollbar->x(), scrollbar->y());
    invalidateRect(dirtyRect);
}

bool FramelessScrollView::isActive() const
{
    // FIXME
    return true;
}

ScrollableArea* FramelessScrollView::enclosingScrollableArea() const
{
    // FIXME: Look for an ancestor scrollable area that can be scrolled.
    return 0;
}

bool FramelessScrollView::scrollbarsCanBeActive() const
{
    return isActive();
}

IntRect FramelessScrollView::scrollableAreaBoundingBox() const
{
    return windowClipRect(false);
}

void FramelessScrollView::invalidateRect(const IntRect& rect)
{
    if (HostWindow* h = hostWindow())
        h->invalidateContentsAndRootView(rect);
}

HostWindow* FramelessScrollView::hostWindow() const
{
    return const_cast<FramelessScrollViewClient*>(m_client);
}

IntRect FramelessScrollView::windowClipRect(bool clipToContents) const
{
    IntRect clipRect = visibleContentRect(clipToContents ? ExcludeScrollbars : IncludeScrollbars);
    if (shouldPlaceVerticalScrollbarOnLeft() && verticalScrollbar())
        clipRect.move(verticalScrollbar()->width(), 0);
    return contentsToWindow(clipRect);
}

void FramelessScrollView::paintContents(GraphicsContext*, const IntRect&)
{
}

void FramelessScrollView::contentsResized()
{
}

void FramelessScrollView::scrollbarExistenceDidChange()
{
}

} // namespace WebCore