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diff --git a/Source/WebCore/rendering/style/FillLayer.cpp b/Source/WebCore/rendering/style/FillLayer.cpp
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+/*
+ * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "FillLayer.h"
+
+namespace WebCore {
+
+FillLayer::FillLayer(EFillLayerType type)
+ : m_next(0)
+ , m_image(FillLayer::initialFillImage(type))
+ , m_xPosition(FillLayer::initialFillXPosition(type))
+ , m_yPosition(FillLayer::initialFillYPosition(type))
+ , m_attachment(FillLayer::initialFillAttachment(type))
+ , m_clip(FillLayer::initialFillClip(type))
+ , m_origin(FillLayer::initialFillOrigin(type))
+ , m_repeatX(FillLayer::initialFillRepeatX(type))
+ , m_repeatY(FillLayer::initialFillRepeatY(type))
+ , m_composite(FillLayer::initialFillComposite(type))
+ , m_sizeType(SizeNone)
+ , m_sizeLength(FillLayer::initialFillSizeLength(type))
+ , m_imageSet(false)
+ , m_attachmentSet(false)
+ , m_clipSet(false)
+ , m_originSet(false)
+ , m_repeatXSet(false)
+ , m_repeatYSet(false)
+ , m_xPosSet(false)
+ , m_yPosSet(false)
+ , m_compositeSet(type == MaskFillLayer)
+ , m_type(type)
+{
+}
+
+FillLayer::FillLayer(const FillLayer& o)
+ : m_next(o.m_next ? new FillLayer(*o.m_next) : 0)
+ , m_image(o.m_image)
+ , m_xPosition(o.m_xPosition)
+ , m_yPosition(o.m_yPosition)
+ , m_attachment(o.m_attachment)
+ , m_clip(o.m_clip)
+ , m_origin(o.m_origin)
+ , m_repeatX(o.m_repeatX)
+ , m_repeatY(o.m_repeatY)
+ , m_composite(o.m_composite)
+ , m_sizeType(o.m_sizeType)
+ , m_sizeLength(o.m_sizeLength)
+ , m_imageSet(o.m_imageSet)
+ , m_attachmentSet(o.m_attachmentSet)
+ , m_clipSet(o.m_clipSet)
+ , m_originSet(o.m_originSet)
+ , m_repeatXSet(o.m_repeatXSet)
+ , m_repeatYSet(o.m_repeatYSet)
+ , m_xPosSet(o.m_xPosSet)
+ , m_yPosSet(o.m_yPosSet)
+ , m_compositeSet(o.m_compositeSet)
+ , m_type(o.m_type)
+{
+}
+
+FillLayer::~FillLayer()
+{
+ delete m_next;
+}
+
+FillLayer& FillLayer::operator=(const FillLayer& o)
+{
+ if (m_next != o.m_next) {
+ delete m_next;
+ m_next = o.m_next ? new FillLayer(*o.m_next) : 0;
+ }
+
+ m_image = o.m_image;
+ m_xPosition = o.m_xPosition;
+ m_yPosition = o.m_yPosition;
+ m_attachment = o.m_attachment;
+ m_clip = o.m_clip;
+ m_composite = o.m_composite;
+ m_origin = o.m_origin;
+ m_repeatX = o.m_repeatX;
+ m_repeatY = o.m_repeatY;
+ m_sizeType = o.m_sizeType;
+ m_sizeLength = o.m_sizeLength;
+
+ m_imageSet = o.m_imageSet;
+ m_attachmentSet = o.m_attachmentSet;
+ m_clipSet = o.m_clipSet;
+ m_compositeSet = o.m_compositeSet;
+ m_originSet = o.m_originSet;
+ m_repeatXSet = o.m_repeatXSet;
+ m_repeatYSet = o.m_repeatYSet;
+ m_xPosSet = o.m_xPosSet;
+ m_yPosSet = o.m_yPosSet;
+
+ m_type = o.m_type;
+
+ return *this;
+}
+
+bool FillLayer::operator==(const FillLayer& o) const
+{
+ // We do not check the "isSet" booleans for each property, since those are only used during initial construction
+ // to propagate patterns into layers. All layer comparisons happen after values have all been filled in anyway.
+ return StyleImage::imagesEquivalent(m_image.get(), o.m_image.get()) && m_xPosition == o.m_xPosition && m_yPosition == o.m_yPosition &&
+ m_attachment == o.m_attachment && m_clip == o.m_clip &&
+ m_composite == o.m_composite && m_origin == o.m_origin && m_repeatX == o.m_repeatX &&
+ m_repeatY == o.m_repeatY && m_sizeType == o.m_sizeType && m_sizeLength == o.m_sizeLength &&
+ m_type == o.m_type && ((m_next && o.m_next) ? *m_next == *o.m_next : m_next == o.m_next);
+}
+
+void FillLayer::fillUnsetProperties()
+{
+ FillLayer* curr;
+ for (curr = this; curr && curr->isImageSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_image = pattern->m_image;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+
+ for (curr = this; curr && curr->isXPositionSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_xPosition = pattern->m_xPosition;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+
+ for (curr = this; curr && curr->isYPositionSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_yPosition = pattern->m_yPosition;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+
+ for (curr = this; curr && curr->isAttachmentSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_attachment = pattern->m_attachment;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+
+ for (curr = this; curr && curr->isClipSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_clip = pattern->m_clip;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+
+ for (curr = this; curr && curr->isCompositeSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_composite = pattern->m_composite;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+
+ for (curr = this; curr && curr->isOriginSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_origin = pattern->m_origin;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+
+ for (curr = this; curr && curr->isRepeatXSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_repeatX = pattern->m_repeatX;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+
+ for (curr = this; curr && curr->isRepeatYSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_repeatY = pattern->m_repeatY;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+
+ for (curr = this; curr && curr->isSizeSet(); curr = curr->next()) { }
+ if (curr && curr != this) {
+ // We need to fill in the remaining values with the pattern specified.
+ for (FillLayer* pattern = this; curr; curr = curr->next()) {
+ curr->m_sizeType = pattern->m_sizeType;
+ curr->m_sizeLength = pattern->m_sizeLength;
+ pattern = pattern->next();
+ if (pattern == curr || !pattern)
+ pattern = this;
+ }
+ }
+}
+
+void FillLayer::cullEmptyLayers()
+{
+ FillLayer* next;
+ for (FillLayer* p = this; p; p = next) {
+ next = p->m_next;
+ if (next && !next->isImageSet() &&
+ !next->isXPositionSet() && !next->isYPositionSet() &&
+ !next->isAttachmentSet() && !next->isClipSet() &&
+ !next->isCompositeSet() && !next->isOriginSet() &&
+ !next->isRepeatXSet() && !next->isRepeatYSet()
+ && !next->isSizeSet()) {
+ delete next;
+ p->m_next = 0;
+ break;
+ }
+ }
+}
+
+bool FillLayer::containsImage(StyleImage* s) const
+{
+ if (!s)
+ return false;
+ if (m_image && *s == *m_image)
+ return true;
+ if (m_next)
+ return m_next->containsImage(s);
+ return false;
+}
+
+bool FillLayer::imagesAreLoaded() const
+{
+ const FillLayer* curr;
+ for (curr = this; curr; curr = curr->next()) {
+ if (curr->m_image && !curr->m_image->isLoaded())
+ return false;
+ }
+
+ return true;
+}
+
+} // namespace WebCore
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