Moves handful of files to ash/wm/common

ash/wm/window_resizer.h

-// 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.
-
-#ifndef ASH_WM_WINDOW_RESIZER_H_
-#define ASH_WM_WINDOW_RESIZER_H_
-
-#include <memory>
-
-#include "ash/ash_export.h"
-#include "ash/wm/drag_details.h"
-#include "ash/wm/window_state.h"
-#include "base/macros.h"
-#include "ui/wm/public/window_move_client.h"
-
-namespace gfx {
-class Rect;
-}
-
-namespace ash {
-namespace wm {
-class WmWindow;
-}
-
-// WindowResizer is used by ToplevelWindowEventFilter to handle dragging, moving
-// or resizing a window. All coordinates passed to this are in the parent
-// windows coordinates.
-class ASH_EXPORT WindowResizer {
- public:
-  // Constants to identify the type of resize.
-  static const int kBoundsChange_None;
-  static const int kBoundsChange_Repositions;
-  static const int kBoundsChange_Resizes;
-
-  // Used to indicate which direction the resize occurs in.
-  static const int kBoundsChangeDirection_None;
-  static const int kBoundsChangeDirection_Horizontal;
-  static const int kBoundsChangeDirection_Vertical;
-
-  explicit WindowResizer(wm::WindowState* window_state);
-  virtual ~WindowResizer();
-
-  // Returns a bitmask of the kBoundsChange_ values.
-  static int GetBoundsChangeForWindowComponent(int component);
-
-  // Returns a bitmask of the kBoundsChange_ values.
-  static int GetPositionChangeDirectionForWindowComponent(int window_component);
-
-  // Invoked to drag/move/resize the window. |location| is in the coordinates
-  // of the window supplied to the constructor. |event_flags| is the event
-  // flags from the event.
-  virtual void Drag(const gfx::Point& location, int event_flags) = 0;
-
-  // Invoked to complete the drag.
-  virtual void CompleteDrag() = 0;
-
-  // Reverts the drag.
-  virtual void RevertDrag() = 0;
-
-  // Returns the target window the resizer was created for.
-  wm::WmWindow* GetTarget() const {
-    return window_state_ ? window_state_->window() : nullptr;
-  }
-  // See comment for |DragDetails::initial_location_in_parent|.
-  const gfx::Point& GetInitialLocation() const {
-    return window_state_->drag_details()->initial_location_in_parent;
-  }
-
-  // Drag parameters established when drag starts.
-  const DragDetails& details() const { return *window_state_->drag_details(); }
-
- protected:
-  gfx::Rect CalculateBoundsForDrag(const gfx::Point& location);
-
-  static bool IsBottomEdge(int component);
-
-  // WindowState of the drag target.
-  wm::WindowState* window_state_;
-
- private:
-  // In case of touch resizing, adjusts deltas so that the border is positioned
-  // just under the touch point.
-  void AdjustDeltaForTouchResize(int* delta_x, int* delta_y);
-
-  // Returns the new origin of the window. The arguments are the difference
-  // between the current location and the initial location.
-  gfx::Point GetOriginForDrag(int delta_x, int delta_y);
-
-  // Returns the size of the window for the drag.
-  gfx::Size GetSizeForDrag(int* delta_x, int* delta_y);
-
-  // Returns the width of the window.
-  int GetWidthForDrag(int min_width, int* delta_x);
-
-  // Returns the height of the drag.
-  int GetHeightForDrag(int min_height, int* delta_y);
-
-  DISALLOW_COPY_AND_ASSIGN(WindowResizer);
-};
-
-// Creates a WindowResizer for |window|. Returns a unique_ptr with null if
-// |window| should not be resized nor dragged.
-ASH_EXPORT std::unique_ptr<WindowResizer> CreateWindowResizer(
-    wm::WmWindow* window,
-    const gfx::Point& point_in_parent,
-    int window_component,
-    aura::client::WindowMoveSource source);
-
-}  // namespace ash
-
-#endif  // ASH_WM_WINDOW_RESIZER_H_