1 files changed, 100 insertions, 0 deletions
diff --git a/Source/WebCore/rendering/style/ShadowData.cpp b/Source/WebCore/rendering/style/ShadowData.cpp
new file mode 100644
index 0000000..e8d381c
--- /dev/null
+++ b/Source/WebCore/rendering/style/ShadowData.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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 "ShadowData.h"
+
+#include "FloatRect.h"
+#include "IntRect.h"
+
+using namespace std;
+
+namespace WebCore {
+
+ShadowData::ShadowData(const ShadowData& o)
+    : m_x(o.m_x)
+    , m_y(o.m_y)
+    , m_blur(o.m_blur)
+    , m_spread(o.m_spread)
+    , m_color(o.m_color)
+    , m_style(o.m_style)
+    , m_isWebkitBoxShadow(o.m_isWebkitBoxShadow)
+{
+    m_next = o.m_next ? new ShadowData(*o.m_next) : 0;
+}
+
+bool ShadowData::operator==(const ShadowData& o) const
+{
+    if ((m_next && !o.m_next) || (!m_next && o.m_next)
+        || (m_next && o.m_next && *m_next != *o.m_next))
+        return false;
+    
+    return m_x == o.m_x
+        && m_y == o.m_y
+        && m_blur == o.m_blur
+        && m_spread == o.m_spread
+        && m_style == o.m_style
+        && m_color == o.m_color
+        && m_isWebkitBoxShadow == o.m_isWebkitBoxShadow;
+}
+
+static inline void calculateShadowExtent(const ShadowData* shadow, int additionalOutlineSize, int& shadowLeft, int& shadowRight, int& shadowTop, int& shadowBottom)
+{
+    do {
+        int blurAndSpread = shadow->blur() + shadow->spread() + additionalOutlineSize;
+        if (shadow->style() == Normal) {
+            shadowLeft = min(shadow->x() - blurAndSpread, shadowLeft);
+            shadowRight = max(shadow->x() + blurAndSpread, shadowRight);
+            shadowTop = min(shadow->y() - blurAndSpread, shadowTop);
+            shadowBottom = max(shadow->y() + blurAndSpread, shadowBottom);
+        }
+
+        shadow = shadow->next();
+    } while (shadow);
+}
+
+void ShadowData::adjustRectForShadow(IntRect& rect, int additionalOutlineSize) const
+{
+    int shadowLeft = 0;
+    int shadowRight = 0;
+    int shadowTop = 0;
+    int shadowBottom = 0;
+    calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom);
+
+    rect.move(shadowLeft, shadowTop);
+    rect.setWidth(rect.width() - shadowLeft + shadowRight);
+    rect.setHeight(rect.height() - shadowTop + shadowBottom);
+}
+
+void ShadowData::adjustRectForShadow(FloatRect& rect, int additionalOutlineSize) const
+{
+    int shadowLeft = 0;
+    int shadowRight = 0;
+    int shadowTop = 0;
+    int shadowBottom = 0;
+    calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom);
+
+    rect.move(shadowLeft, shadowTop);
+    rect.setWidth(rect.width() - shadowLeft + shadowRight);
+    rect.setHeight(rect.height() - shadowTop + shadowBottom);
+}
+
+} // namespace WebCore