Don't show the shadow for maximized/fullscreen window

ui/wm/core/shadow_controller.cc

 // 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.
 
 #include "ui/wm/core/shadow_controller.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
 #include "base/scoped_observer.h"
+#include "ui/aura/client/aura_constants.h"
 #include "ui/aura/env.h"
 #include "ui/aura/env_observer.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
+#include "ui/base/ui_base_types.h"
 #include "ui/compositor/layer.h"
 #include "ui/wm/core/shadow.h"
 #include "ui/wm/core/shadow_types.h"
 #include "ui/wm/core/window_util.h"
 #include "ui/wm/public/activation_client.h"
 
 using std::make_pair;
 
 namespace wm {
 
@@ skipping 135 matching lines @@
 
 void ShadowController::Impl::OnWindowInitialized(aura::Window* window) {
   observer_manager_.Add(window);
   SetShadowType(window, GetShadowTypeFromWindow(window));
   HandlePossibleShadowVisibilityChange(window);
 }
 
 void ShadowController::Impl::OnWindowPropertyChanged(aura::Window* window,
                                                      const void* key,
                                                      intptr_t old) {
-  if (key == kShadowTypeKey) {
+  if (key == kShadowTypeKey || key == aura::client::kShowStateKey) {
     HandlePossibleShadowVisibilityChange(window);
     return;
   }
 }
 
 void ShadowController::Impl::OnWindowBoundsChanged(
     aura::Window* window,
     const gfx::Rect& old_bounds,
     const gfx::Rect& new_bounds) {
   Shadow* shadow = GetShadowForWindow(window);
@@ skipping 17 matching lines @@
     Shadow* shadow = GetShadowForWindow(lost_active);
     if (shadow && !ShouldUseSmallShadowForWindow(lost_active)) {
       shadow->SetStyle(GetShadowStyleForWindowLosingActive(lost_active,
                                                            gained_active));
     }
   }
 }
 
 bool ShadowController::Impl::ShouldShowShadowForWindow(
     aura::Window* window) const {
+  ui::WindowShowState show_state =
+      window->GetProperty(aura::client::kShowStateKey);
+  if (show_state == ui::SHOW_STATE_FULLSCREEN ||
+      show_state == ui::SHOW_STATE_MAXIMIZED) {
+    return SHADOW_TYPE_NONE;
+  }
+
   const ShadowType type = GetShadowType(window);
   switch (type) {
     case SHADOW_TYPE_NONE:
       return false;
     case SHADOW_TYPE_RECTANGULAR:
     case SHADOW_TYPE_RECTANGULAR_ALWAYS_ACTIVE:
       return true;
     default:
       NOTREACHED() << "Unknown shadow type " << type;
       return false;
@@ skipping 56 matching lines @@
   impl_->OnWindowActivated(gained_active, lost_active);
 }
 
 // ShadowController::TestApi ---------------------------------------------------
 
 Shadow* ShadowController::TestApi::GetShadowForWindow(aura::Window* window) {
   return controller_->impl_->GetShadowForWindow(window);
 }
 
 }  // namespace wm