Drag and rotate windows

ui/aura_shell/workspace/workspace_manager.cc

 // Copyright (c) 2011 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/aura_shell/workspace/workspace_manager.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "ui/aura/desktop.h"
 #include "ui/aura/screen_aura.h"
@@ skipping 51 matching lines @@
 Workspace* WorkspaceManager::FindBy(aura::Window* window) const {
   for (Workspaces::const_iterator i = workspaces_.begin();
        i != workspaces_.end();
        ++i) {
     if ((*i)->Contains(window))
       return *i;
   }
   return NULL;
 }
 
+aura::Window* WorkspaceManager::FindSwapWindowForLocation(
+    const gfx::Point& point) {
+  for (Workspaces::const_iterator i = workspaces_.begin();
+       i != workspaces_.end();
+       ++i) {
+    aura::Window* window = (*i)->FindSwapWindowForLocation(point);
+    if (window)
+      return window;
+  }
+  return NULL;
+}
+
 void WorkspaceManager::LayoutWorkspaces() {
   UpdateViewport();
 
   gfx::Rect bounds(workspace_size_);
   int x = 0;
   for (Workspaces::const_iterator i = workspaces_.begin();
        i != workspaces_.end();
        ++i) {
     Workspace* workspace = *i;
     bounds.set_x(x);
@@ skipping 32 matching lines @@
     transform.SetTranslateX(-viewport_->GetTargetBounds().x() + dx);
     transform.SetTranslateY(workspace_size_.height() *  (1.0f - scale) / 2);
   } else {
     transform.SetTranslateX(-active_workspace_->bounds().x());
   }
 
   viewport_->layer()->SetAnimation(aura::Window::CreateDefaultAnimation());
   viewport_->layer()->SetTransform(transform);
 }
 
+void WorkspaceManager::SwapWindow(aura::Window* drag, aura::Window* target) {
+  Workspace* source_ws = FindBy(drag);
+  Workspace* target_ws = FindBy(target);
+  DCHECK(source_ws);
+  DCHECK(target_ws);
+  if (source_ws == target_ws) {
+    source_ws->SwapWindow(drag, target);
+  } else {
+    source_ws->ReplaceWindow(drag, target, true);
+    target_ws->ReplaceWindow(target, drag, false);
+  }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // WorkspaceManager, Overridden from aura::DesktopObserver:
 
 void WorkspaceManager::OnDesktopResized(const gfx::Size& new_size) {
   workspace_size_ =
       gfx::Screen::GetMonitorAreaNearestWindow(viewport_).size();
   LayoutWorkspaces();
 }
 
 void WorkspaceManager::OnActiveWindowChanged(aura::Window* active) {
@@ skipping 57 matching lines @@
   // Move to active workspace.
   if (active_workspace_) {
     ui::Transform transform;
     transform.SetTranslateX(-active_workspace_->bounds().x());
     viewport_->layer()->SetAnimation(aura::Window::CreateDefaultAnimation());
     viewport_->SetTransform(transform);
   }
 }
 
 }  // namespace aura_shell