Remove ScrollableArea and Scrollbar

sky/engine/platform/scroll/ScrollAnimator.cpp

-/*
- * Copyright (c) 2010, Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "sky/engine/config.h"
-#include "sky/engine/platform/scroll/ScrollAnimator.h"
-
-#include <algorithm>
-#include "sky/engine/platform/geometry/FloatPoint.h"
-#include "sky/engine/platform/scroll/ScrollableArea.h"
-#include "sky/engine/wtf/PassOwnPtr.h"
-
-namespace blink {
-
-ScrollAnimator::ScrollAnimator(ScrollableArea* scrollableArea)
-    : m_scrollableArea(scrollableArea)
-    , m_currentPosX(0)
-    , m_currentPosY(0)
-{
-}
-
-ScrollAnimator::~ScrollAnimator()
-{
-}
-
-PassOwnPtr<ScrollAnimator> ScrollAnimator::create(ScrollableArea* scrollableArea)
-{
-    return adoptPtr(new ScrollAnimator(scrollableArea));
-}
-
-bool ScrollAnimator::scroll(ScrollbarOrientation orientation, ScrollGranularity, float step, float delta)
-{
-    float& currentPos = (orientation == HorizontalScrollbar) ? m_currentPosX : m_currentPosY;
-    float newPos = clampScrollPosition(orientation, currentPos + step * delta);
-    if (currentPos == newPos)
-        return false;
-    currentPos = newPos;
-
-    notifyPositionChanged();
-
-    return true;
-}
-
-void ScrollAnimator::scrollToOffsetWithoutAnimation(const FloatPoint& offset)
-{
-    m_currentPosX = offset.x();
-    m_currentPosY = offset.y();
-    notifyPositionChanged();
-}
-
-void ScrollAnimator::setCurrentPosition(const FloatPoint& position)
-{
-    m_currentPosX = position.x();
-    m_currentPosY = position.y();
-}
-
-FloatPoint ScrollAnimator::currentPosition() const
-{
-    return FloatPoint(m_currentPosX, m_currentPosY);
-}
-
-void ScrollAnimator::notifyPositionChanged()
-{
-    m_scrollableArea->setScrollOffsetFromAnimation(IntPoint(m_currentPosX, m_currentPosY));
-}
-
-float ScrollAnimator::clampScrollPosition(ScrollbarOrientation orientation, float pos)
-{
-    float maxScrollPos = m_scrollableArea->maximumScrollPosition(orientation);
-    float minScrollPos = m_scrollableArea->minimumScrollPosition(orientation);
-    return std::max(std::min(pos, maxScrollPos), minScrollPos);
-}
-
-} // namespace blink