Index: content/common/page_zoom.cc |
=================================================================== |
--- content/common/page_zoom.cc (revision 0) |
+++ content/common/page_zoom.cc (revision 0) |
@@ -0,0 +1,25 @@ |
+// Copyright (c) 2011 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 <cmath> |
+ |
+#include "content/public/common/page_zoom.h" |
+ |
+namespace content { |
+ |
+const double kMinimumZoomFactor = 0.25; |
+const double kMaximumZoomFactor = 5.0; |
+ |
+bool ZoomValuesEqual(double value_a, double value_b) { |
+ // Epsilon value for comparing two floating-point zoom values. We don't use |
+ // std::numeric_limits<> because it is too precise for zoom values. Zoom |
+ // values lose precision due to factor/level conversions. A value of 0.001 |
+ // is precise enough for zoom value comparisons. |
+ const double epsilon = 0.001; |
+ |
+ return (std::fabs(value_a - value_b) <= epsilon); |
+} |
+ |
+} // namespace content |
+ |
Property changes on: content/common/page_zoom.cc |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |