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ui/gfx/win/rect_util.h

Index: ui/gfx/win/rect_util.h
diff --git a/ui/gfx/win/rect_util.h b/ui/gfx/win/rect_util.h
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--- a/ui/gfx/win/rect_util.h
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-// Copyright 2016 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.
-
-#ifndef UI_GFX_WIN_RECT_UTIL_H_
-#define UI_GFX_WIN_RECT_UTIL_H_
-
-#include <stdint.h>
-
-#include "ui/gfx/gfx_export.h"
-
-namespace gfx {
-
-class Rect;
-
-namespace win {
-
-enum class RectEdge {
-  BOTTOM = 0,
-  LEFT = 1,
-  TOP = 2,
-  RIGHT = 3,
-  NONE = 4,
-};
-
-// Returns |ref|'s RectEdge touching |test|.
-// Returns RectEdge::NONE if |ref| and |test| do not touch.
-// At corners, the bottom corners are clamped to BOTTOM, the upper left corner
-// is clamped to LEFT and the upper right corner is clamped to TOP.
-GFX_EXPORT RectEdge FindTouchingRectEdge(const gfx::Rect& ref,
-                                         const gfx::Rect& test);
-
-// Returns a scaled and position rect from |unscaled_rect|, positioned against
-// |ref_scaled_rect| based off of the original edge positioning on
-// |ref_unscaled_rect|, and downscaled by |unscaled_rect_scale_factor|.
-// As such, |unscaled_rect| and |ref_unscaled_rect| must be touching rectangles.
-//
-// Examples:
-// Scaled and Unscaled Coordinates
-// +--------------+              Since both rectangles are of the same scale
-// |              |              factor, relative positions remain the same.
-// |              |
-// |    REF 1x    +----------+
-// |              |          |
-// +--------------+    1x    |
-//                |          |
-//                +----------+
-//
-// Unscaled Coordinates
-// +--------------+              The 2x rectangle is scaled down while
-// |              |              maintaining a similar neighboring relationship
-// |              |              with the REF 1x rectangle.
-// |    REF 1x    +----------+
-// |              |          |
-// +--------------+    2x    |
-//                |          |
-//                +----------+
-// Scaled Coordinates
-// +--------------+
-// |              |
-// |              |
-// |    REF 1x    |
-// |              +-----+
-// +--------------+  2x |
-//                +-----+
-//
-// Unscaled Coordinates
-// +--------------+              The reference rectangle has been scaled by 2x
-// |              |              from |ref_unscaled_rect| to |ref_scaled_rect|.
-// |              |              ScaleAndPositionRect maintains the same
-// |    REF 2x    +----------+   relative positioning of the unscaled rect in
-// |              |          |   the scaled coordinate space.
-// |              |          |
-// |              |    1x    |
-// +--------------+          |
-//                |          |
-//                +----------+
-// Scaled Coordinates
-// +-------+
-// |       |
-// | REF 2x+----------+
-// |       |          |
-// +-------+          |
-//         |    1x    |
-//         |          |
-//         |          |
-//         +----------+
-GFX_EXPORT gfx::Rect ScaleAndPositionRect(const gfx::Rect& ref_scaled_rect,
-                                          const gfx::Rect& ref_unscaled_rect,
-                                          const gfx::Rect& unscaled_rect,
-                                          float unscaled_rect_scale_factor);
-
-// Returns the squared distance between two rects.
-// The distance between two rects is the length of the shortest segment that can
-// be drawn between two rectangles. This segment generally connects two opposing
-// corners between rectangles like this...
-//
-// +----------+
-// |          |
-// +----------+
-//             \  <--- Shortest Segment
-//              \
-//               +---+
-//               |   |
-//               |   |
-//               +---+
-//
-// For rectangles that share coordinates within the same axis, that generally
-// means the segment is parallel to the axis and perpendicular to the edges.
-//
-//                 One of many shortest segments
-//  +----------+  /                            \    +--------+
-//  |          |  |                             \   |        |
-//  |          |  V  +---+                       \  +--------+
-//  |          |-----|   |                        \-->|
-//  +----------+     |   |                            +----+
-//                   |   |                            |    |
-//                   +---+                            +----+
-//
-// For rectangles that intersect each other, the distance is 0.
-//
-// The squared distance is used to avoid taking the square root as the common
-// usage is to compare distances greater than 1 unit.
-GFX_EXPORT int64_t SquaredDistanceBetweenRects(const gfx::Rect& ref,
-                                               const gfx::Rect& rect);
-
-}  // namespace win
-}  // namespace gfx
-
-#endif  // UI_GFX_WIN_RECT_UTIL_H_