src/ui/views/rect_based_targeting_utils.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_RECT_BASED_TARGETING_UTILS_H_
   6 #define UI_RECT_BASED_TARGETING_UTILS_H_
   7
   8 #include "ui/views/views_export.h"
   9
  10 namespace gfx {
  11 class Point;
  12 class Rect;
  13 }
  14
  15 namespace views {
  16
  17 // Returns true if |rect| is 1x1.
  18 VIEWS_EXPORT bool UsePointBasedTargeting(const gfx::Rect& rect);
  19
  20 // Returns the percentage of |rect_1|'s area that is covered by |rect_2|.
  21 VIEWS_EXPORT float PercentCoveredBy(const gfx::Rect& rect_1,
  22                                     const gfx::Rect& rect_2);
  23
  24 // Returns the square of the distance from |point| to the center of |rect|.
  25 VIEWS_EXPORT int DistanceSquaredFromCenterToPoint(const gfx::Point& point,
  26                                                   const gfx::Rect& rect);
  27
  28 }  // namespace views
  29
  30 #endif  // UI_RECT_BASED_TARGETING_UTILS_H_