1 files changed, 118 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/IntRect.cpp b/Source/WebCore/platform/graphics/IntRect.cpp
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+++ b/Source/WebCore/platform/graphics/IntRect.cpp
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2003, 2006, 2009 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. AND ITS 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 APPLE INC. OR ITS 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 "IntRect.h"
+
+#include "FloatRect.h"
+#include <algorithm>
+
+using std::max;
+using std::min;
+
+namespace WebCore {
+
+IntRect::IntRect(const FloatRect& r)
+    : m_location(IntPoint(static_cast<int>(r.x()), static_cast<int>(r.y())))
+    , m_size(IntSize(static_cast<int>(r.width()), static_cast<int>(r.height())))
+{
+}
+
+bool IntRect::intersects(const IntRect& other) const
+{
+    // Checking emptiness handles negative widths as well as zero.
+    return !isEmpty() && !other.isEmpty()
+        && x() < other.right() && other.x() < right()
+        && y() < other.bottom() && other.y() < bottom();
+}
+
+bool IntRect::contains(const IntRect& other) const
+{
+    return x() <= other.x() && right() >= other.right()
+        && y() <= other.y() && bottom() >= other.bottom();
+}
+
+void IntRect::intersect(const IntRect& other)
+{
+    int l = max(x(), other.x());
+    int t = max(y(), other.y());
+    int r = min(right(), other.right());
+    int b = min(bottom(), other.bottom());
+
+    // Return a clean empty rectangle for non-intersecting cases.
+    if (l >= r || t >= b) {
+        l = 0;
+        t = 0;
+        r = 0;
+        b = 0;
+    }
+
+    m_location.setX(l);
+    m_location.setY(t);
+    m_size.setWidth(r - l);
+    m_size.setHeight(b - t);
+}
+
+void IntRect::unite(const IntRect& other)
+{
+    // Handle empty special cases first.
+    if (other.isEmpty())
+        return;
+    if (isEmpty()) {
+        *this = other;
+        return;
+    }
+
+    int l = min(x(), other.x());
+    int t = min(y(), other.y());
+    int r = max(right(), other.right());
+    int b = max(bottom(), other.bottom());
+
+    m_location.setX(l);
+    m_location.setY(t);
+    m_size.setWidth(r - l);
+    m_size.setHeight(b - t);
+}
+
+void IntRect::scale(float s)
+{
+    m_location.setX((int)(x() * s));
+    m_location.setY((int)(y() * s));
+    m_size.setWidth((int)(width() * s));
+    m_size.setHeight((int)(height() * s));
+}
+
+IntRect unionRect(const Vector<IntRect>& rects)
+{
+    IntRect result;
+
+    size_t count = rects.size();
+    for (size_t i = 0; i < count; ++i)
+        result.unite(rects[i]);
+
+    return result;
+}
+
+} // namespace WebCore