1 files changed, 122 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/FloatRect.cpp b/WebCore/platform/graphics/FloatRect.cpp
new file mode 100644
index 0000000..ec7b3fa
--- /dev/null
+++ b/WebCore/platform/graphics/FloatRect.cpp
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2003, 2006, 2007 Apple Inc.  All rights reserved.
+ * Copyright (C) 2005 Nokia.  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 COMPUTER, 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 COMPUTER, 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.
+ */
+
+#include "config.h"
+#include "FloatRect.h"
+
+#include "FloatConversion.h"
+#include "IntRect.h"
+#include <algorithm>
+#include <math.h>
+
+using std::max;
+using std::min;
+
+namespace WebCore {
+
+FloatRect::FloatRect(const IntRect& r) : m_location(r.location()), m_size(r.size())
+{
+}
+
+FloatRect FloatRect::narrowPrecision(double x, double y, double width, double height)
+{
+    return FloatRect(narrowPrecisionToFloat(x), narrowPrecisionToFloat(y), narrowPrecisionToFloat(width), narrowPrecisionToFloat(height));
+}
+
+bool FloatRect::intersects(const FloatRect& 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 FloatRect::contains(const FloatRect& other) const
+{
+    return x() <= other.x() && right() >= other.right()
+        && y() <= other.y() && bottom() >= other.bottom();
+}
+
+void FloatRect::intersect(const FloatRect& other)
+{
+    float l = max(x(), other.x());
+    float t = max(y(), other.y());
+    float r = min(right(), other.right());
+    float 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 FloatRect::unite(const FloatRect& other)
+{
+    // Handle empty special cases first.
+    if (other.isEmpty())
+        return;
+    if (isEmpty()) {
+        *this = other;
+        return;
+    }
+
+    float l = min(x(), other.x());
+    float t = min(y(), other.y());
+    float r = max(right(), other.right());
+    float b = max(bottom(), other.bottom());
+
+    m_location.setX(l);
+    m_location.setY(t);
+    m_size.setWidth(r - l);
+    m_size.setHeight(b - t);
+}
+
+void FloatRect::scale(float s)
+{
+    m_location.setX(x() * s);
+    m_location.setY(y() * s);
+    m_size.setWidth(width() * s);
+    m_size.setHeight(height() * s);
+}
+
+IntRect enclosingIntRect(const FloatRect& rect)
+{
+    int l = static_cast<int>(floorf(rect.x()));
+    int t = static_cast<int>(floorf(rect.y()));
+    int r = static_cast<int>(ceilf(rect.right()));
+    int b = static_cast<int>(ceilf(rect.bottom()));
+    return IntRect(l, t, r - l, b - t);
+}
+
+}