Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/ScrollbarThemeNonMacCommon.cpp

-/*
- * Copyright (C) 2008 Apple Inc. All Rights Reserved.
- * Copyright (C) 2008, 2009 Google Inc.
- *
- * 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 INC. ``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 INC. 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 "config.h"
-#include "core/platform/ScrollbarThemeNonMacCommon.h"
-
-#include "core/platform/ScrollableArea.h"
-#include "core/platform/graphics/GraphicsContextStateSaver.h"
-#include "platform/PlatformMouseEvent.h"
-#include "platform/scroll/ScrollbarThemeClient.h"
-
-namespace WebCore {
-
-bool ScrollbarThemeNonMacCommon::hasThumb(ScrollbarThemeClient* scrollbar)
-{
-    // This method is just called as a paint-time optimization to see if
-    // painting the thumb can be skipped. We don't have to be exact here.
-    return thumbLength(scrollbar) > 0;
-}
-
-IntRect ScrollbarThemeNonMacCommon::backButtonRect(ScrollbarThemeClient* scrollbar, ScrollbarPart part, bool)
-{
-    // Windows and Linux just have single arrows.
-    if (part == BackButtonEndPart)
-        return IntRect();
-
-    IntSize size = buttonSize(scrollbar);
-    return IntRect(scrollbar->x(), scrollbar->y(), size.width(), size.height());
-}
-
-IntRect ScrollbarThemeNonMacCommon::forwardButtonRect(ScrollbarThemeClient* scrollbar, ScrollbarPart part, bool)
-{
-    // Windows and Linux just have single arrows.
-    if (part == ForwardButtonStartPart)
-        return IntRect();
-
-    IntSize size = buttonSize(scrollbar);
-    int x, y;
-    if (scrollbar->orientation() == HorizontalScrollbar) {
-        x = scrollbar->x() + scrollbar->width() - size.width();
-        y = scrollbar->y();
-    } else {
-        x = scrollbar->x();
-        y = scrollbar->y() + scrollbar->height() - size.height();
-    }
-    return IntRect(x, y, size.width(), size.height());
-}
-
-IntRect ScrollbarThemeNonMacCommon::trackRect(ScrollbarThemeClient* scrollbar, bool)
-{
-    IntSize bs = buttonSize(scrollbar);
-    int thickness = scrollbarThickness(scrollbar->controlSize());
-    if (scrollbar->orientation() == HorizontalScrollbar) {
-        // Once the scrollbar becomes smaller than the size of the
-        // two buttons with a 1 pixel gap, the track disappears.
-        if (scrollbar->width() <= 2 * bs.width() + 1)
-            return IntRect();
-        return IntRect(scrollbar->x() + bs.width(), scrollbar->y(), scrollbar->width() - 2 * bs.width(), thickness);
-    }
-    if (scrollbar->height() <= 2 * bs.height() + 1)
-        return IntRect();
-    return IntRect(scrollbar->x(), scrollbar->y() + bs.height(), thickness, scrollbar->height() - 2 * bs.height());
-}
-
-void ScrollbarThemeNonMacCommon::paintTrackBackground(GraphicsContext* context, ScrollbarThemeClient* scrollbar, const IntRect& rect)
-{
-    // Just assume a forward track part. We only paint the track as a single piece when there is no thumb.
-    if (!hasThumb(scrollbar))
-        paintTrackPiece(context, scrollbar, rect, ForwardTrackPart);
-}
-
-void ScrollbarThemeNonMacCommon::paintTickmarks(GraphicsContext* context, ScrollbarThemeClient* scrollbar, const IntRect& rect)
-{
-    if (scrollbar->orientation() != VerticalScrollbar)
-        return;
-
-    if (rect.height() <= 0 || rect.width() <= 0)
-        return;
-
-    // Get the tickmarks for the frameview.
-    Vector<IntRect> tickmarks;
-    scrollbar->getTickmarks(tickmarks);
-    if (!tickmarks.size())
-        return;
-
-    GraphicsContextStateSaver stateSaver(*context);
-    context->setShouldAntialias(false);
-
-    for (Vector<IntRect>::const_iterator i = tickmarks.begin(); i != tickmarks.end(); ++i) {
-        // Calculate how far down (in %) the tick-mark should appear.
-        const float percent = static_cast<float>(i->y()) / scrollbar->totalSize();
-
-        // Calculate how far down (in pixels) the tick-mark should appear.
-        const int yPos = rect.y() + (rect.height() * percent);
-
-        context->setFillColor(Color(0xCC, 0xAA, 0x00, 0xFF));
-        FloatRect tickRect(rect.x(), yPos, rect.width(), 3);
-        context->fillRect(tickRect);
-
-        context->setFillColor(Color(0xFF, 0xDD, 0x00, 0xFF));
-        FloatRect tickStroke(rect.x(), yPos + 1, rect.width(), 1);
-        context->fillRect(tickStroke);
-    }
-}
-
-} // namespace WebCore