1 files changed, 82 insertions, 0 deletions
diff --git a/ui/gfx/geometry/rect_conversions.cc b/ui/gfx/geometry/rect_conversions.cc
new file mode 100644
index 0000000000..3a5b2dcead
--- /dev/null
+++ b/ui/gfx/geometry/rect_conversions.cc
@@ -0,0 +1,82 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/gfx/geometry/rect_conversions.h"
+
+#include <algorithm>
+#include <cmath>
+
+#include "base/logging.h"
+#include "ui/gfx/geometry/safe_integer_conversions.h"
+
+namespace gfx {
+
+Rect ToEnclosingRect(const RectF& r) {
+  int left = ToFlooredInt(r.x());
+  int right = r.width() ? ToCeiledInt(r.right()) : left;
+  int top = ToFlooredInt(r.y());
+  int bottom = r.height() ? ToCeiledInt(r.bottom()) : top;
+
+  Rect result;
+  result.SetByBounds(left, top, right, bottom);
+  return result;
+}
+
+Rect ToEnclosedRect(const RectF& rect) {
+  Rect result;
+  result.SetByBounds(ToCeiledInt(rect.x()), ToCeiledInt(rect.y()),
+                     ToFlooredInt(rect.right()), ToFlooredInt(rect.bottom()));
+  return result;
+}
+
+Rect ToNearestRect(const RectF& rect) {
+  float float_min_x = rect.x();
+  float float_min_y = rect.y();
+  float float_max_x = rect.right();
+  float float_max_y = rect.bottom();
+
+  int min_x = ToRoundedInt(float_min_x);
+  int min_y = ToRoundedInt(float_min_y);
+  int max_x = ToRoundedInt(float_max_x);
+  int max_y = ToRoundedInt(float_max_y);
+
+  // If these DCHECKs fail, you're using the wrong method, consider using
+  // ToEnclosingRect or ToEnclosedRect instead.
+  DCHECK(std::abs(min_x - float_min_x) < 0.01f);
+  DCHECK(std::abs(min_y - float_min_y) < 0.01f);
+  DCHECK(std::abs(max_x - float_max_x) < 0.01f);
+  DCHECK(std::abs(max_y - float_max_y) < 0.01f);
+
+  Rect result;
+  result.SetByBounds(min_x, min_y, max_x, max_y);
+
+  return result;
+}
+
+bool IsNearestRectWithinDistance(const gfx::RectF& rect, float distance) {
+  float float_min_x = rect.x();
+  float float_min_y = rect.y();
+  float float_max_x = rect.right();
+  float float_max_y = rect.bottom();
+
+  int min_x = ToRoundedInt(float_min_x);
+  int min_y = ToRoundedInt(float_min_y);
+  int max_x = ToRoundedInt(float_max_x);
+  int max_y = ToRoundedInt(float_max_y);
+
+  return
+      (std::abs(min_x - float_min_x) < distance) &&
+      (std::abs(min_y - float_min_y) < distance) &&
+      (std::abs(max_x - float_max_x) < distance) &&
+      (std::abs(max_y - float_max_y) < distance);
+}
+
+Rect ToFlooredRectDeprecated(const RectF& rect) {
+  return Rect(ToFlooredInt(rect.x()),
+              ToFlooredInt(rect.y()),
+              ToFlooredInt(rect.width()),
+              ToFlooredInt(rect.height()));
+}
+
+}  // namespace gfx