Move DisplayLayout and DisplayLayoutBuilder From ash To ui/display

ash/display/display_layout.h

-// Copyright (c) 2013 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 ASH_DISPLAY_DISPLAY_LAYOUT_H_
-#define ASH_DISPLAY_DISPLAY_LAYOUT_H_
-
-#include <stdint.h>
-
-#include <string>
-#include <vector>
-
-#include "ash/ash_export.h"
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/strings/string_piece.h"
-
-namespace base {
-class Value;
-template <typename T> class JSONValueConverter;
-}
-
-namespace gfx {
-class Display;
-}
-
-namespace ash {
-
-// An identifier used to manage display layout in DisplayManager /
-// DisplayLayoutStore.
-using DisplayIdList = std::vector<int64_t>;
-
-using DisplayList = std::vector<gfx::Display>;
-
-// DisplayPlacement specifies where the display (D) is placed relative
-// to parent (P) display.  In the following example, the display (D)
-// given by |display_id| is placed at the left side of the parent
-// display (P) given by |parent_display_id|, with a negative offset.
-//
-//        +      +--------+
-// offset |      |        |
-//        +      |   D    +--------+
-//               |        |        |
-//               +--------+   P    |
-//                        |        |
-//                        +--------+
-//
-struct ASH_EXPORT DisplayPlacement {
-  // The id of the display this placement will be applied to.
-  int64_t display_id;
-
-  // The parent display id to which the above display is placed.
-  int64_t parent_display_id;
-
-  // To which side the parent display the display is positioned.
-  enum Position { TOP, RIGHT, BOTTOM, LEFT };
-  Position position;
-
-  // The offset of the position of the secondary display. The offset is
-  // based on the top/left edge of the primary display.
-  int offset;
-
-  DisplayPlacement(Position position, int offset);
-  DisplayPlacement();
-  DisplayPlacement(const DisplayPlacement& placement);
-
-  DisplayPlacement& Swap();
-
-  std::string ToString() const;
-
-  static std::string PositionToString(Position position);
-  static bool StringToPosition(const base::StringPiece& string,
-                               Position* position);
-};
-
-class ASH_EXPORT DisplayLayout final {
- public:
-  DisplayLayout();
-  ~DisplayLayout();
-
-  // Validates the layout object.
-  static bool Validate(const DisplayIdList& list, const DisplayLayout& layout);
-
-  std::vector<DisplayPlacement> placement_list;
-
-  // True if displays are mirrored.
-  bool mirrored;
-
-  // True if multi displays should default to unified mode.
-  bool default_unified;
-
-  // The id of the display used as a primary display.
-  int64_t primary_id;
-
-  scoped_ptr<DisplayLayout> Copy() const;
-
-  // Test if the |layout| has the same placement list. Other fields such
-  // as mirrored, primary_id are ignored.
-  bool HasSamePlacementList(const DisplayLayout& layout) const;
-
-  // Returns string representation of the layout for debugging/testing.
-  std::string ToString() const;
-
-  // Returns the DisplayPlacement entry matching |display_id| if it exists,
-  // otherwise returns a DisplayPlacement with an invalid display id.
-  DisplayPlacement FindPlacementById(int64_t display_id) const;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(DisplayLayout);
-};
-
-}  // namespace ash
-
-#endif