Preliminary interactive layout of window manager's demo_launcher

mojo/examples/window_manager/window_manager.cc

 // 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.
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "mojo/examples/keyboard/keyboard.mojom.h"
 #include "mojo/examples/window_manager/debug_panel.h"
 #include "mojo/examples/window_manager/window_manager.mojom.h"
 #include "mojo/public/cpp/application/application_connection.h"
@@ skipping 141 matching lines @@
   ViewManager* view_manager_;
 
   // Node the keyboard is attached to.
   Node* node_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyboardManager);
 };
 
 class RootLayoutManager : public NodeObserver {
  public:
-  explicit RootLayoutManager(ViewManager* view_manager,
-                             Node* root,
-                             Id content_node_id)
-                            : root_(root),
-                              view_manager_(view_manager),
-                              content_node_id_(content_node_id) {}
+  RootLayoutManager(ViewManager* view_manager, Node* root,
+                    Id content_node_id,
+                    Id launcher_ui_node_id,
+                    Id control_panel_node_id)
+                    : root_(root),
+                      view_manager_(view_manager),
+                      content_node_id_(content_node_id),
+                      launcher_ui_node_id_(launcher_ui_node_id),
+                      control_panel_node_id_(control_panel_node_id) {}
   virtual ~RootLayoutManager() {}
 
  private:
   // Overridden from NodeObserver:
   virtual void OnNodeBoundsChanged(Node* node,
-                                   const gfx::Rect& /*old_bounds*/,
+                                   const gfx::Rect& old_bounds,
                                    const gfx::Rect& new_bounds) OVERRIDE {
     DCHECK_EQ(node, root_);
+
     Node* content_node = view_manager_->GetNodeById(content_node_id_);
     content_node->SetBounds(new_bounds);
     // Force the view's bitmap to be recreated
     content_node->active_view()->SetColor(SK_ColorBLUE);
-    // TODO(hansmuller): Do Layout
+
+    Node* launcher_ui_node =
+      view_manager_->GetNodeById(launcher_ui_node_id_);
+    gfx::Rect launcher_ui_bounds(launcher_ui_node->bounds());
+    launcher_ui_bounds.set_width(launcher_ui_bounds.width() +
+                                 new_bounds.width() - old_bounds.width());
+    launcher_ui_node->SetBounds(launcher_ui_bounds);
+
+
+    Node* control_panel_node =
+      view_manager_->GetNodeById(control_panel_node_id_);
+    gfx::Rect control_panel_bounds(control_panel_node->bounds());
+    control_panel_bounds.set_x(control_panel_bounds.x() +
+                               new_bounds.width() - old_bounds.width());
+    control_panel_node->SetBounds(control_panel_bounds);
   }

[Ben Goodger (Google), 2014/07/11 18:18:23]

Looks like you're missing the embedded node(s) (e.g. the content area).

 
   Node* root_;
   ViewManager* view_manager_;
   Id content_node_id_;
+  Id launcher_ui_node_id_;
+  Id control_panel_node_id_;
 
   DISALLOW_COPY_AND_ASSIGN(RootLayoutManager);
 };
 
 class WindowManager : public ApplicationDelegate,
                       public DebugPanel::Delegate,
                       public ViewObserver,
                       public ViewManagerDelegate,
                       public ViewEventDispatcher {
  public:
@@ skipping 82 matching lines @@
   virtual void OnRootAdded(ViewManager* view_manager, Node* root) OVERRIDE {
     DCHECK(!view_manager_);
     view_manager_ = view_manager;
     view_manager_->SetEventDispatcher(this);
 
     Node* node = Node::Create(view_manager);
     root->AddChild(node);
     node->SetBounds(gfx::Rect(root->bounds().size()));
     content_node_id_ = node->id();
 
-    root_layout_manager_.reset(
-        new RootLayoutManager(view_manager, root, content_node_id_));
-    root->AddObserver(root_layout_manager_.get());
-
     View* view = View::Create(view_manager);
     node->SetActiveView(view);
     view->SetColor(SK_ColorBLUE);
     view->AddObserver(this);
 
-    CreateLauncherUI();
-    CreateControlPanel(node);
+    Id launcher_ui_id = CreateLauncherUI();
+    Id control_panel_id = CreateControlPanel(node);
+
+    root_layout_manager_.reset(
+        new RootLayoutManager(view_manager, root,
+                              content_node_id_,
+                              launcher_ui_id,
+                              control_panel_id));
+    root->AddObserver(root_layout_manager_.get());
   }
 
   // Overridden from ViewEventDispatcher:
   virtual void DispatchEvent(View* target, EventPtr event) OVERRIDE {
     // TODO(beng): More sophisticated focus handling than this is required!
     if (event->action == ui::ET_MOUSE_PRESSED &&
         !IsDescendantOfKeyboard(target)) {
       target->node()->SetFocus();
     }
     view_manager_->DispatchEvent(target, event.Pass());
@@ skipping 31 matching lines @@
         dest_node = windows_.back();
     }
 
     if (dest_node)
       Embed(dest_node, handler_url, nav_details.Pass(), response.Pass());
     else
       CreateWindow(handler_url, nav_details.Pass(), response.Pass());
   }
 
   // TODO(beng): proper layout manager!!
-  void CreateLauncherUI() {
+  Id CreateLauncherUI() {
     navigation::NavigationDetailsPtr nav_details;
     navigation::ResponseDetailsPtr response;
     Node* node = view_manager_->GetNodeById(content_node_id_);
     gfx::Rect bounds = node->bounds();
     bounds.Inset(kBorderInset, kBorderInset);
     bounds.set_height(kTextfieldHeight);
     launcher_ui_ = CreateChild(content_node_id_, "mojo:mojo_browser", bounds,
                                nav_details.Pass(), response.Pass());
+    return launcher_ui_->id();
   }
 
   void CreateWindow(const std::string& handler_url,
                     navigation::NavigationDetailsPtr nav_details,
                     navigation::ResponseDetailsPtr response) {
     Node* node = view_manager_->GetNodeById(content_node_id_);
     gfx::Rect bounds(kBorderInset,
                      2 * kBorderInset + kTextfieldHeight,
                      node->bounds().width() - 3 * kBorderInset -
                          kControlPanelWidth,
@@ skipping 31 matching lines @@
       app_->ConnectToService(app_url, &navigator);
       navigator->Navigate(node->id(), nav_details.Pass(), response.Pass());
     }
   }
 
   bool IsDescendantOfKeyboard(View* target) {
     return keyboard_manager_.get() &&
         keyboard_manager_->node()->Contains(target->node());
   }
 
-  void CreateControlPanel(view_manager::Node* root) {
+  Id CreateControlPanel(view_manager::Node* root) {
     Node* node = Node::Create(view_manager_);
     View* view = view_manager::View::Create(view_manager_);
     root->AddChild(node);
     node->SetActiveView(view);
 
     gfx::Rect bounds(root->bounds().width() - kControlPanelWidth -
                          kBorderInset,
                      kBorderInset * 2 + kTextfieldHeight,
                      kControlPanelWidth,
                      root->bounds().height() - kBorderInset * 3 -
                          kTextfieldHeight);
     node->SetBounds(bounds);
 
     debug_panel_ = new DebugPanel(this, node);
+    return node->id();
   }
 
   scoped_ptr<ViewsInit> views_init_;
   DebugPanel* debug_panel_;
   launcher::LauncherPtr launcher_;
   Node* launcher_ui_;
   std::vector<Node*> windows_;
   ViewManager* view_manager_;
   scoped_ptr<RootLayoutManager> root_layout_manager_;
 
@@ skipping 31 matching lines @@
 }
 
 }  // namespace examples
 
 // static
 ApplicationDelegate* ApplicationDelegate::Create() {
   return new examples::WindowManager;
 }
 
 }  // namespace mojo