Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/ScrollbarThemeOverlay.cpp

-/*
- * Copyright (C) 2011 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:
- *
- * 1.  Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- * 2.  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.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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 "config.h"
-#include "core/platform/ScrollbarThemeOverlay.h"
-
-#include "core/platform/graphics/GraphicsContext.h"
-#include "platform/PlatformMouseEvent.h"
-#include "platform/scroll/ScrollbarThemeClient.h"
-#include "platform/transforms/TransformationMatrix.h"
-
-#include <algorithm>
-
-using namespace std;
-
-namespace WebCore {
-
-ScrollbarThemeOverlay::ScrollbarThemeOverlay(int thumbThickness, int scrollbarMargin, HitTestBehavior allowHitTest, Color color)
-    : ScrollbarTheme()
-    , m_thumbThickness(thumbThickness)
-    , m_scrollbarMargin(scrollbarMargin)
-    , m_allowHitTest(allowHitTest)
-    , m_color(color)
-{
-}
-
-int ScrollbarThemeOverlay::scrollbarThickness(ScrollbarControlSize controlSize)
-{
-    return m_thumbThickness + m_scrollbarMargin;
-}
-
-bool ScrollbarThemeOverlay::usesOverlayScrollbars() const
-{
-    return true;
-}
-
-int ScrollbarThemeOverlay::thumbPosition(ScrollbarThemeClient* scrollbar)
-{
-    if (!scrollbar->totalSize())
-        return 0;
-
-    int trackLen = trackLength(scrollbar);
-    float proportion = static_cast<float>(scrollbar->currentPos()) / scrollbar->totalSize();
-    return round(proportion * trackLen);
-}
-
-int ScrollbarThemeOverlay::thumbLength(ScrollbarThemeClient* scrollbar)
-{
-    int trackLen = trackLength(scrollbar);
-
-    if (!scrollbar->totalSize())
-        return trackLen;
-
-    float proportion = static_cast<float>(scrollbar->visibleSize()) / scrollbar->totalSize();
-    int length = round(proportion * trackLen);
-    length = min(max(length, minimumThumbLength(scrollbar)), trackLen);
-    return length;
-}
-
-bool ScrollbarThemeOverlay::hasThumb(ScrollbarThemeClient* scrollbar)
-{
-    return true;
-}
-
-IntRect ScrollbarThemeOverlay::backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool)
-{
-    return IntRect();
-}
-
-IntRect ScrollbarThemeOverlay::forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool)
-{
-    return IntRect();
-}
-
-IntRect ScrollbarThemeOverlay::trackRect(ScrollbarThemeClient* scrollbar, bool)
-{
-    IntRect rect = scrollbar->frameRect();
-    if (scrollbar->orientation() == HorizontalScrollbar)
-        rect.inflateX(-m_scrollbarMargin);
-    else
-        rect.inflateY(-m_scrollbarMargin);
-    return rect;
-}
-
-int ScrollbarThemeOverlay::thumbThickness(ScrollbarThemeClient*)
-{
-    return m_thumbThickness;
-}
-
-void ScrollbarThemeOverlay::paintThumb(GraphicsContext* context, ScrollbarThemeClient* scrollbar, const IntRect& rect)
-{
-    IntRect thumbRect = rect;
-    if (scrollbar->orientation() == HorizontalScrollbar) {
-        thumbRect.setHeight(thumbRect.height() - m_scrollbarMargin);
-    } else {
-        thumbRect.setWidth(thumbRect.width() - m_scrollbarMargin);
-        if (scrollbar->isLeftSideVerticalScrollbar())
-            thumbRect.setX(thumbRect.x() + m_scrollbarMargin);
-    }
-    context->fillRect(thumbRect, m_color);
-}
-
-ScrollbarPart ScrollbarThemeOverlay::hitTest(ScrollbarThemeClient* scrollbar, const IntPoint& position)
-{
-    if (m_allowHitTest == DisallowHitTest)
-        return NoPart;
-
-    return ScrollbarTheme::hitTest(scrollbar, position);
-}
-
-} // namespace WebCore