Adds sizing, maximizing, minimizing to simple_wm

mash/simple_wm/move_loop.cc

 // 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.
 
 #include "mash/simple_wm/move_loop.h"
 
 #include "base/auto_reset.h"
 #include "base/memory/ptr_util.h"
+#include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
 #include "ui/base/hit_test.h"
+#include "ui/base/ui_base_types.h"
 #include "ui/events/event.h"
 #include "ui/gfx/geometry/point_conversions.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace simple_wm {
 namespace {
 
 int MouseOnlyEventFlags(int flags) {
   return flags & (ui::EF_LEFT_MOUSE_BUTTON | ui::EF_MIDDLE_MOUSE_BUTTON |
                   ui::EF_RIGHT_MOUSE_BUTTON);
@@ skipping 131 matching lines @@
       *type = Type::RESIZE;
       *h_loc = HorizontalLocation::LEFT;
       return true;
     default:
       break;
   }
   return false;
 }
 
 void MoveLoop::MoveImpl(const ui::PointerEvent& event) {
+  ui::WindowShowState show_state =
+      target_->GetProperty(aura::client::kShowStateKey);
+  // TODO(beng): figure out if there might not be another place to put this,
+  //             perhaps prior to move loop creation.
+  if (show_state == ui::SHOW_STATE_MAXIMIZED) {
+    base::AutoReset<bool> resetter(&changing_bounds_, true);
+    target_->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_NORMAL);
+    gfx::Rect restored_bounds =
+        *target_->GetProperty(aura::client::kRestoreBoundsKey);
+    // TODO(beng): Not just enough to adjust width and height, probably also
+    //             need to take some action to recenter the window relative to
+    //             the pointer position within the titlebar.
+    initial_window_bounds_.set_width(restored_bounds.width());
+    initial_window_bounds_.set_height(restored_bounds.height());
+  }
   const gfx::Vector2d delta =
       event.root_location() - initial_event_screen_location_;
   const gfx::Rect new_bounds(DetermineBoundsFromDelta(delta));
   base::AutoReset<bool> resetter(&changing_bounds_, true);
   target_->SetBounds(new_bounds);
   //SetWindowUserSetBounds(target_, new_bounds);
 }
 
 void MoveLoop::Cancel() {
   target_->RemoveObserver(this);
@@ skipping 42 matching lines @@
   if (!changing_bounds_)
     Cancel();
 }
 
 void MoveLoop::OnWindowVisibilityChanged(aura::Window* window, bool visible) {
   DCHECK_EQ(window, target_);
   Cancel();
 }
 
 }  // namespace simple_wm