Introduce BorderImageLength and BorderImageLengthBox

Source/core/rendering/style/BorderImageLengthBox.h

+/*
+ * Copyright (c) 2013, Opera Software ASA. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Opera Software ASA nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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 BorderImageLengthBox_h
+#define BorderImageLengthBox_h
+
+#include "core/rendering/style/BorderImageLength.h"
+#include "platform/LengthBox.h"
+
+namespace WebCore {
+
+// Represents a computed border image width or outset.
+//
+// http://www.w3.org/TR/css3-background/#border-image-width
+// http://www.w3.org/TR/css3-background/#border-image-outset
+class BorderImageLengthBox {
+public:
+    BorderImageLengthBox()
+    {
+    }
+
+    BorderImageLengthBox(Length top, Length right, Length bottom, Length left)
+        : m_left(left)
+        , m_right(right)
+        , m_top(top)
+        , m_bottom(bottom)
+    {
+    }
+
+    BorderImageLengthBox(double top, double right, double bottom, double left)
+        : m_left(left)
+        , m_right(right)
+        , m_top(top)
+        , m_bottom(bottom)
+    {
+    }
+
+    // FIXME: Remove when the conversion to BorderImageLengthBox is complete.
+    explicit BorderImageLengthBox(LengthBox lengthBox)
+        : m_left(lengthBox.m_left)
+        , m_right(lengthBox.m_right)
+        , m_top(lengthBox.m_top)
+        , m_bottom(lengthBox.m_bottom)
+    {
+    }
+
+    const BorderImageLength& left() const { return m_left; }
+    const BorderImageLength& right() const { return m_right; }
+    const BorderImageLength& top() const { return m_top; }
+    const BorderImageLength& bottom() const { return m_bottom; }
+
+    void setLeft(const BorderImageLength& left) { m_left = left; }
+    void setRight(const BorderImageLength& right) { m_right = right; }
+    void setTop(const BorderImageLength& top) { m_top = top; }
+    void setBottom(const BorderImageLength& bottom) { m_bottom = bottom; }
+
+    bool operator==(const BorderImageLengthBox& other) const
+    {
+        return m_left == other.m_left && m_right == other.m_right
+            && m_top == other.m_top && m_bottom == other.m_bottom;
+    }
+
+    bool operator!=(const BorderImageLengthBox& other) const
+    {
+        return !(*this == other);
+    }
+
+    bool nonZero() const
+    {
+        return !(m_left.isZero() && m_right.isZero() && m_top.isZero() && m_bottom.isZero());
+    }
+
+    // FIXME: Remove when the conversion to BorderImageLengthBox is complete.
+    LengthBox deprecatedLengthBox() const
+    {
+        return LengthBox(m_top.deprecatedUnifiedLength(), m_right.deprecatedUnifiedLength(),
+            m_bottom.deprecatedUnifiedLength(), m_left.deprecatedUnifiedLength());
+    }
+
+private:
+    BorderImageLength m_left;
+    BorderImageLength m_right;
+    BorderImageLength m_top;
+    BorderImageLength m_bottom;
+};
+
+} // namespace WebCore
+
+#endif // BorderImageLengthBox_h