Factor out the layout code from OpaqueBrowserFrameView for testing.

chrome/browser/ui/views/frame/opaque_browser_frame_view_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 CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_H_
+#define CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_H_
+
+#include "chrome/browser/ui/views/frame/opaque_browser_frame_view.h"
+#include "ui/views/layout/layout_manager.h"
+
+class OpaqueBrowserFrameViewLayoutDelegate;
+
+namespace views {
+class ImageButton;
+class Label;
+}
+
+// Calculates the position of the widgets in the opaque browser frame view.
+//
+// This is separated out for testing reasons. OpaqueBrowserFrameView has tight
+// dependencies with Browser and classes that depend on Browser.
+class OpaqueBrowserFrameViewLayout : public views::LayoutManager {
+ public:
+  explicit OpaqueBrowserFrameViewLayout(
+      OpaqueBrowserFrameViewLayoutDelegate* delegate);
+  virtual ~OpaqueBrowserFrameViewLayout();
+
+  // Whether we should add the (minimize,maximize,close) buttons. Can be false
+  // on Windows 8 in metro mode.
+  static bool ShouldAddDefaultCaptionButtons();
+
+  gfx::Rect GetBoundsForTabStrip(
+      const gfx::Size& tabstrip_preferred_size,
+      int available_width) const;
+  gfx::Rect GetBoundsForTabStripAndAvatarArea(
+      const gfx::Size& tabstrip_preferred_size,
+      int available_width) const;
+
+  gfx::Size GetMinimumSize(int available_width) const;
+
+  // Returns the bounds of the window required to display the content area at
+  // the specified bounds.
+  gfx::Rect GetWindowBoundsForClientBounds(
+      const gfx::Rect& client_bounds) const;
+
+  // Returns the thickness of the border that makes up the window frame edges.
+  // This does not include any client edge.  If |restored| is true, acts as if
+  // the window is restored regardless of the real mode.
+  int FrameBorderThickness(bool restored) const;
+
+  // Returns the thickness of the entire nonclient left, right, and bottom
+  // borders, including both the window frame and any client edge.
+  int NonClientBorderThickness() const;
+
+  // Returns the height of the entire nonclient top border, including the window
+  // frame, any title area, and any connected client edge.  If |restored| is
+  // true, acts as if the window is restored regardless of the real mode.
+  int NonClientTopBorderHeight(bool restored) const;
+
+  int GetTabStripInsetsTop(bool restored) const;
+
+  // Returns the y-coordinate of the caption buttons.  If |restored| is true,
+  // acts as if the window is restored regardless of the real mode.
+  int CaptionButtonY(bool restored) const;
+
+  // Returns the thickness of the 3D edge along the bottom of the titlebar.  If
+  // |restored| is true, acts as if the window is restored regardless of the
+  // real mode.
+  int TitlebarBottomThickness(bool restored) const;
+
+  // Returns the bounds of the titlebar icon (or where the icon would be if
+  // there was one).
+  gfx::Rect IconBounds() const;
+
+  // Returns the bounds of the client area for the specified view size.
+  gfx::Rect CalculateClientAreaBounds(int width, int height) const;
+
+  const gfx::Rect& client_view_bounds() const { return client_view_bounds_; }
+
+ private:
+  // Layout various sub-components of this view.
+  void LayoutWindowControls(views::View* host);
+  void LayoutTitleBar();
+  void LayoutAvatar();
+
+  // Internal implementation of ViewAdded() and ViewRemoved().
+  void SetView(int id, views::View* view);
+
+  // Overriden from views::LayoutManager:
+  virtual void Layout(views::View* host) OVERRIDE;
+  virtual gfx::Size GetPreferredSize(views::View* host) OVERRIDE;
+  virtual void ViewAdded(views::View* host, views::View* view) OVERRIDE;
+  virtual void ViewRemoved(views::View* host, views::View* view) OVERRIDE;
+
+  OpaqueBrowserFrameViewLayoutDelegate* delegate_;
+
+  // The layout rect of the avatar icon, if visible.
+  gfx::Rect avatar_bounds_;
+
+  // The bounds of the ClientView.
+  gfx::Rect client_view_bounds_;
+
+  // Window controls.
+  views::ImageButton* minimize_button_;
+  views::ImageButton* maximize_button_;
+  views::ImageButton* restore_button_;
+  views::ImageButton* close_button_;
+
+  views::View* window_icon_;
+  views::Label* window_title_;
+
+  views::View* avatar_label_;
+  views::View* avatar_button_;
+
+  DISALLOW_COPY_AND_ASSIGN(OpaqueBrowserFrameViewLayout);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_H_