While dragging a window, show a semi-transparent aura window instead of the standard gray phantom wi

ash/wm/workspace/workspace_window_resizer_unittest.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 "ash/wm/workspace/workspace_window_resizer.h"
 
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/property_util.h"
 #include "ash/wm/workspace_controller.h"
+#include "ash/wm/workspace/phantom_window_controller.h"
 #include "base/string_number_conversions.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/base/hit_test.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/screen.h"
 
 namespace ash {
 namespace internal {
 namespace {
@@ skipping 32 matching lines @@
     aura::RootWindow* root = Shell::GetPrimaryRootWindow();
     root->SetHostSize(gfx::Size(800, kRootHeight));
 
     aura::Window* default_container =
         Shell::GetContainer(root, kShellWindowId_DefaultContainer);
 
     gfx::Rect root_bounds(root->bounds());
     EXPECT_EQ(kRootHeight, root_bounds.height());
     Shell::GetInstance()->SetDisplayWorkAreaInsets(root, gfx::Insets());
     window_.reset(new aura::Window(&delegate_));
+    window_->SetType(aura::client::WINDOW_TYPE_NORMAL);
     window_->Init(ui::LAYER_NOT_DRAWN);
     window_->SetParent(default_container);
     window_->set_id(1);
 
     window2_.reset(new aura::Window(&delegate2_));
+    window2_->SetType(aura::client::WINDOW_TYPE_NORMAL);
     window2_->Init(ui::LAYER_NOT_DRAWN);
     window2_->SetParent(default_container);
     window2_->set_id(2);
 
     window3_.reset(new aura::Window(&delegate3_));
+    window3_->SetType(aura::client::WINDOW_TYPE_NORMAL);
     window3_->Init(ui::LAYER_NOT_DRAWN);
     window3_->SetParent(default_container);
     window3_->set_id(3);
   }
 
   virtual void TearDown() OVERRIDE {
     window_.reset();
     window2_.reset();
     window3_.reset();
     AshTestBase::TearDown();
@@ skipping 48 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(WorkspaceWindowResizerTest);
 };
 
 // Fails on win_aura since wm::GetRootWindowRelativeToWindow is not implemented
 // yet for the platform.
 #if defined(OS_WIN)
 #define MAYBE_WindowDragWithMultiMonitors \
   DISABLED_WindowDragWithMultiMonitors
 #define MAYBE_WindowDragWithMultiMonitorsRightToLeft \
   DISABLED_WindowDragWithMultiMonitorsRightToLeft
+#define MAYBE_PhantomStyle DISABLED_PhantomStyle
 #else
 #define MAYBE_WindowDragWithMultiMonitors WindowDragWithMultiMonitors
 #define MAYBE_WindowDragWithMultiMonitorsRightToLeft \
   WindowDragWithMultiMonitorsRightToLeft
+#define MAYBE_PhantomStyle PhantomStyle
 #endif
 
 // Assertions around attached window resize dragging from the right with 2
 // windows.
 TEST_F(WorkspaceWindowResizerTest, AttachedResize_RIGHT_2) {
   window_->SetBounds(gfx::Rect(0, 300, 400, 300));
   window2_->SetBounds(gfx::Rect(400, 200, 100, 200));
 
   std::vector<aura::Window*> windows;
   windows.push_back(window2_.get());
@@ skipping 405 matching lines @@
         window_.get(), gfx::Point(), HTCAPTION, empty_windows()));
     ASSERT_TRUE(resizer.get());
     // Move the mouse near the right edge, (798, 0), of the primary display.
     resizer->Drag(CalculateDragPoint(*resizer, 798, -600), 0);
     resizer->CompleteDrag(0);
     EXPECT_EQ(root_windows[0], window_->GetRootWindow());
     EXPECT_EQ("798,0 50x60", window_->bounds().ToString());
   }
 }
 
+// Verifies the style of the drag phantom window is correct.
+TEST_F(WorkspaceWindowResizerTest, MAYBE_PhantomStyle) {
+  UpdateDisplay("800x600,800x600");
+  Shell::RootWindowList root_windows = Shell::GetAllRootWindows();
+  ASSERT_EQ(2U, root_windows.size());
+
+  window_->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
+                             gfx::Screen::GetPrimaryDisplay());
+  EXPECT_EQ(root_windows[0], window_->GetRootWindow());
+  EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
+  {
+    SetGridSize(0);
+    scoped_ptr<WorkspaceWindowResizer> resizer(WorkspaceWindowResizer::Create(
+        window_.get(), gfx::Point(), HTCAPTION, empty_windows()));
+    ASSERT_TRUE(resizer.get());
+    EXPECT_FALSE(resizer->snap_phantom_window_controller_for_testing());
+    EXPECT_FALSE(resizer->drag_phantom_window_controller_for_testing());
+
+    // The pointer is inside the primary root. Both phantoms should be NULL.
+    resizer->Drag(CalculateDragPoint(*resizer, 10, 10), 0);
+    EXPECT_FALSE(resizer->snap_phantom_window_controller_for_testing());
+    EXPECT_FALSE(resizer->drag_phantom_window_controller_for_testing());
+
+    // The window spans both root windows.
+    resizer->Drag(CalculateDragPoint(*resizer, 798, 10), 0);
+    EXPECT_FALSE(resizer->snap_phantom_window_controller_for_testing());
+    PhantomWindowController* controller =
+        resizer->drag_phantom_window_controller_for_testing();
+    ASSERT_TRUE(controller);
+    EXPECT_EQ(PhantomWindowController::STYLE_WINDOW, controller->style());
+    // |window_| should be opaque since the pointer is still on the primary
+    // root window. The phantom should be semi-transparent.
+    EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
+    EXPECT_GT(1.0f, controller->GetOpacity());
+
+    // Enter the pointer to the secondary display.
+    resizer->Drag(CalculateDragPoint(*resizer, 0, 610), 0);
+    EXPECT_FALSE(resizer->snap_phantom_window_controller_for_testing());
+    controller = resizer->drag_phantom_window_controller_for_testing();
+    ASSERT_TRUE(controller);
+    EXPECT_EQ(PhantomWindowController::STYLE_WINDOW, controller->style());
+    // |window_| should be transparent, and the phantom should be opaque.
+    EXPECT_GT(1.0f, window_->layer()->opacity());
+    EXPECT_FLOAT_EQ(1.0f, controller->GetOpacity());
+
+    resizer->CompleteDrag(0);
+    EXPECT_EQ(root_windows[1], window_->GetRootWindow());
+    EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
+  }
+
+  // Do the same test with RevertDrag().
+  window_->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
+                             gfx::Screen::GetPrimaryDisplay());
+  EXPECT_EQ(root_windows[0], window_->GetRootWindow());
+  EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
+  {
+    scoped_ptr<WorkspaceWindowResizer> resizer(WorkspaceWindowResizer::Create(
+        window_.get(), gfx::Point(), HTCAPTION, empty_windows()));
+    ASSERT_TRUE(resizer.get());
+    EXPECT_FALSE(resizer->snap_phantom_window_controller_for_testing());
+    EXPECT_FALSE(resizer->drag_phantom_window_controller_for_testing());
+
+    resizer->Drag(CalculateDragPoint(*resizer, 0, 610), 0);
+    resizer->RevertDrag();
+    EXPECT_EQ(root_windows[0], window_->GetRootWindow());
+    EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
+  }
+}
+
 // Verifies windows are correctly restacked when reordering multiple windows.
 TEST_F(WorkspaceWindowResizerTest, RestackAttached) {
   window_->SetBounds(gfx::Rect(   0, 0, 200, 300));
   window2_->SetBounds(gfx::Rect(200, 0, 100, 200));
   window3_->SetBounds(gfx::Rect(300, 0, 100, 100));
 
   {
     std::vector<aura::Window*> windows;
     windows.push_back(window2_.get());
     SetGridSize(10);
@@ skipping 179 matching lines @@
   // Ctrl + drag the window to new poistion by adding (10, 12) to its origin,
   // the window should move to the exact position.
   resizer->Drag(CalculateDragPoint(*resizer, 10, 12), 0);
   resizer->CompleteDrag(ui::EF_CONTROL_DOWN);
   EXPECT_EQ("106,124 320x160", window_->bounds().ToString());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace ash