Cros Tablet Window management - Split Screen part II

ash/wm/overview/window_grid.h

 // Copyright 2014 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_OVERVIEW_WINDOW_GRID_H_
 #define ASH_WM_OVERVIEW_WINDOW_GRID_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <set>
 #include <vector>
 
 #include "ash/wm/overview/window_selector.h"
 #include "ash/wm/window_state_observer.h"
 #include "base/macros.h"
 #include "base/scoped_observer.h"
 #include "ui/aura/window_observer.h"
+#include "ui/gfx/geometry/rect.h"
 
 namespace views {
 class Widget;
 }
 
 namespace wm {
 class Shadow;
 }
 
 namespace ash {
@@ skipping 16 matching lines @@
 // Example sequences:
 //  - Going right to left
 //    0, 1, 2, 3, 4, 5, 6
 // The selector is switched to the next window grid (if available) or wrapped if
 // it reaches the end of its movement sequence.
 class ASH_EXPORT WindowGrid : public aura::WindowObserver,
                               public wm::WindowStateObserver {
  public:
   WindowGrid(aura::Window* root_window,
              const std::vector<aura::Window*>& window_list,
-             WindowSelector* window_selector);
+             WindowSelector* window_selector,
+             const gfx::Rect& bounds_in_screen);
   ~WindowGrid() override;
 
   // Exits overview mode, fading out the |shield_widget_| if necessary.
   void Shutdown();
 
   // Prepares the windows in this grid for overview. This will restore all
   // minimized windows and ensure they are visible.
   void PrepareForOverview();
 
   // Positions all the windows in rows of equal height scaling each window to
@@ skipping 15 matching lines @@
   // this window grid bounds.
   bool Move(WindowSelector::Direction direction, bool animate);
 
   // Returns the target selected window, or NULL if there is none selected.
   WindowSelectorItem* SelectedWindow() const;
 
   // Returns true if a window is contained in any of the WindowSelectorItems
   // this grid owns.
   bool Contains(const aura::Window* window) const;
 
+  // Removes |selector_item| from the grid.
+  void RemoveItem(WindowSelectorItem* selector_item);
+
   // Dims the items whose titles do not contain |pattern| and prevents their
   // selection. The pattern has its accents removed and is converted to
   // lowercase in a l10n sensitive context.
   // If |pattern| is empty, no item is dimmed.
   void FilterItems(const base::string16& pattern);
 
   // Called when |window| is about to get closed. If the |window| is currently
   // selected the implementation fades out |selection_widget_| to transparent
   // opacity, effectively hiding the selector widget.
   void WindowClosing(WindowSelectorItem* window);
 
+  // Sets bounds for the window grid and positions all windows in the grid.
+  void SetBoundsAndUpdatePositions(const gfx::Rect& bounds_in_screen);
+
   // Returns true if the grid has no more windows.
   bool empty() const { return window_list_.empty(); }
 
   // Returns how many window selector items are in the grid.
   size_t size() const { return window_list_.size(); }
 
   // Returns true if the selection widget is active.
   bool is_selecting() const { return selection_widget_ != nullptr; }
 
   // Returns the root window in which the grid displays the windows.
@@ skipping 71 matching lines @@
 
   // Current selected window position.
   size_t selected_index_;
 
   // Number of columns in the grid.
   size_t num_columns_;
 
   // True only after all windows have been prepared for overview.
   bool prepared_for_overview_;
 
+  // This WindowGrid's total bounds in screen coordinates.
+  gfx::Rect bounds_;
+
   DISALLOW_COPY_AND_ASSIGN(WindowGrid);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_OVERVIEW_WINDOW_GRID_H_