Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/ScrollbarTheme.h

Index: Source/core/platform/ScrollbarTheme.h
diff --git a/Source/core/platform/ScrollbarTheme.h b/Source/core/platform/ScrollbarTheme.h
deleted file mode 100644
index 7bfb6b06cdd00295c5ffa7d8c21650163179a386..0000000000000000000000000000000000000000
--- a/Source/core/platform/ScrollbarTheme.h
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * Copyright (C) 2008 Apple 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 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.
- */
-
-#ifndef ScrollbarTheme_h
-#define ScrollbarTheme_h
-
-#include "core/platform/graphics/GraphicsContext.h"
-#include "platform/geometry/IntRect.h"
-#include "platform/scroll/ScrollTypes.h"
-
-namespace WebCore {
-
-class PlatformMouseEvent;
-class ScrollbarThemeClient;
-class ScrollView;
-
-class ScrollbarTheme {
-    WTF_MAKE_NONCOPYABLE(ScrollbarTheme); WTF_MAKE_FAST_ALLOCATED;
-public:
-    ScrollbarTheme() { }
-    virtual ~ScrollbarTheme() { }
-
-    virtual void updateEnabledState(ScrollbarThemeClient*) { }
-
-    virtual bool paint(ScrollbarThemeClient*, GraphicsContext*, const IntRect& damageRect);
-    virtual ScrollbarPart hitTest(ScrollbarThemeClient*, const IntPoint&);
-
-    virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar) { return 0; }
-
-    virtual ScrollbarButtonsPlacement buttonsPlacement() const { return ScrollbarButtonsSingle; }
-
-    virtual bool supportsControlTints() const { return false; }
-    virtual bool usesOverlayScrollbars() const { return false; }
-    virtual void updateScrollbarOverlayStyle(ScrollbarThemeClient*) { }
-
-    virtual bool invalidateOnMouseEnterExit() { return false; }
-
-    void invalidateParts(ScrollbarThemeClient* scrollbar, ScrollbarControlPartMask mask)
-    {
-        if (mask & BackButtonStartPart)
-            invalidatePart(scrollbar, BackButtonStartPart);
-        if (mask & ForwardButtonStartPart)
-            invalidatePart(scrollbar, ForwardButtonStartPart);
-        if (mask & BackTrackPart)
-            invalidatePart(scrollbar, BackTrackPart);
-        if (mask & ThumbPart)
-            invalidatePart(scrollbar, ThumbPart);
-        if (mask & ForwardTrackPart)
-            invalidatePart(scrollbar, ForwardTrackPart);
-        if (mask & BackButtonEndPart)
-            invalidatePart(scrollbar, BackButtonEndPart);
-        if (mask & ForwardButtonEndPart)
-            invalidatePart(scrollbar, ForwardButtonEndPart);
-    }
-
-    virtual void invalidatePart(ScrollbarThemeClient*, ScrollbarPart);
-
-    virtual void paintScrollCorner(GraphicsContext*, const IntRect& cornerRect);
-
-    virtual void paintTickmarks(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) { }
-    virtual void paintOverhangBackground(GraphicsContext*, const IntRect&, const IntRect&, const IntRect&);
-    virtual void paintOverhangShadows(GraphicsContext*, const IntSize&, const IntRect&, const IntRect&, const IntRect&) { }
-
-    virtual bool shouldCenterOnThumb(ScrollbarThemeClient*, const PlatformMouseEvent&) { return false; }
-    virtual bool shouldSnapBackToDragOrigin(ScrollbarThemeClient*, const PlatformMouseEvent&) { return false; }
-    virtual bool shouldDragDocumentInsteadOfThumb(ScrollbarThemeClient*, const PlatformMouseEvent&) { return false; }
-
-    // The position of the thumb relative to the track.
-    virtual int thumbPosition(ScrollbarThemeClient*);
-    // The length of the thumb along the axis of the scrollbar.
-    virtual int thumbLength(ScrollbarThemeClient*);
-    // The position of the track relative to the scrollbar.
-    virtual int trackPosition(ScrollbarThemeClient*);
-    // The length of the track along the axis of the scrollbar.
-    virtual int trackLength(ScrollbarThemeClient*);
-
-    virtual bool hasButtons(ScrollbarThemeClient*) = 0;
-    virtual bool hasThumb(ScrollbarThemeClient*) = 0;
-
-    virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) = 0;
-    virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) = 0;
-    virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false) = 0;
-    virtual IntRect thumbRect(ScrollbarThemeClient*);
-    virtual int thumbThickness(ScrollbarThemeClient*);
-
-    virtual int minimumThumbLength(ScrollbarThemeClient*);
-
-    virtual void splitTrack(ScrollbarThemeClient*, const IntRect& track, IntRect& startTrack, IntRect& thumb, IntRect& endTrack);
-
-    virtual void paintScrollbarBackground(GraphicsContext*, ScrollbarThemeClient*) { }
-    virtual void paintTrackBackground(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) { }
-    virtual void paintTrackPiece(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) { }
-    virtual void paintButton(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) { }
-    virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) { }
-
-    virtual int maxOverlapBetweenPages() { return std::numeric_limits<int>::max(); }
-
-    virtual double initialAutoscrollTimerDelay() { return 0.25; }
-    virtual double autoscrollTimerDelay() { return 0.05; }
-
-    virtual IntRect constrainTrackRectToTrackPieces(ScrollbarThemeClient*, const IntRect& rect) { return rect; }
-
-    virtual void registerScrollbar(ScrollbarThemeClient*) { }
-    virtual void unregisterScrollbar(ScrollbarThemeClient*) { }
-
-    virtual bool isMockTheme() const { return false; }
-
-    static ScrollbarTheme* theme();
-
-    static void setMockScrollbarsEnabled(bool flag);
-    static bool mockScrollbarsEnabled();
-
-private:
-    static ScrollbarTheme* nativeTheme(); // Must be implemented to return the correct theme subclass.
-    static bool gMockScrollbarsEnabled;
-};
-
-}
-#endif