views: Move BoxLayout class into views/examples directory.

Also add horizontal support as well.

BUG=None
TEST=out/Debug/view_examples, see Widget tab.

Review URL: http://codereview.chromium.org/2145001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@48460 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 95 insertions, 58 deletions

diff --git a/views/examples/box_layout.cc b/views/examples/box_layout.cc
new file mode 100644
index 0000000..957d0d6
--- /dev/null
+++ b/views/examples/box_layout.cc
@@ -0,0 +1,37 @@
+// Copyright (c) 2010 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 "views/examples/box_layout.h"
+
+namespace examples {
+
+BoxLayout::BoxLayout(Orientation orientation, int margin)
+    : orientation_(orientation),
+      margin_(margin) {
+}
+
+void BoxLayout::Layout(views::View* host) {
+  int height = host->height();
+  int width = host->width();
+  int count = host->GetChildViewCount();
+
+  int z = 0;
+  for (int i = 0; i < count; ++i) {
+    views::View* child = host->GetChildViewAt(i);
+
+    if (orientation_ == kVertical) {
+      child->SetBounds(0, z, width, height / count);
+      z = (height + margin_) * (i + 1) / count;
+    } else if (orientation_ == kHorizontal) {
+      child->SetBounds(z, 0, width / count, height);
+      z = (width + margin_) * (i + 1) / count;
+    }
+  }
+}
+
+gfx::Size BoxLayout::GetPreferredSize(views::View* host) {
+  return gfx::Size();
+}
+
+}  // namespace examples
diff --git a/views/examples/box_layout.h b/views/examples/box_layout.h
new file mode 100644
index 0000000..2e802aa
--- /dev/null
+++ b/views/examples/box_layout.h
@@ -0,0 +1,40 @@
+// Copyright (c) 2010 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.
+
+#ifndef VIEWS_EXAMPLES_BOX_LAYOUT_H_
+#define VIEWS_EXAMPLES_BOX_LAYOUT_H_
+
+#include "views/layout_manager.h"
+
+namespace examples {
+
+// A layout manager that layouts child views vertically or horizontally.
+class BoxLayout : public views::LayoutManager {
+ public:
+  enum Orientation {
+    kHorizontal,
+    kVertical,
+  };
+
+  BoxLayout(Orientation orientation, int margin);
+
+  virtual ~BoxLayout() {}
+
+  // Overridden from views::LayoutManager:
+  virtual void Layout(views::View* host);
+
+  virtual gfx::Size GetPreferredSize(views::View* host);
+
+ private:
+  const Orientation orientation_;
+
+  // The pixel distance between children.
+  const int margin_;
+
+  DISALLOW_COPY_AND_ASSIGN(BoxLayout);
+};
+
+}  // namespace examples
+
+#endif  // VIEWS_EXAMPLES_BOX_LAYOUT_H_
diff --git a/views/examples/widget_example.h b/views/examples/widget_example.h
index b84e8f8..7546ba4 100644
--- a/views/examples/widget_example.h
+++ b/views/examples/widget_example.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
@@ -7,8 +7,8 @@
 
 #include "views/background.h"
 #include "views/controls/button/text_button.h"
+#include "views/examples/box_layout.h"
 #include "views/examples/example_base.h"
-#include "views/fill_layout.h"
 #include "views/view.h"
 #include "views/widget/root_view.h"
 #include "views/widget/widget.h"
@@ -19,55 +19,12 @@
 
 namespace {
 
-// A layout manager that layouts child views vertically.
-// TODO(oshima): support horizontal support and
-// move to views/.
-class BoxLayout : public views::LayoutManager {
- public:
-  BoxLayout() {}
-  virtual ~BoxLayout() {
-  }
-
-  // Overridden from LayoutManager:
-  virtual void Layout(views::View* host) {
-    int height = host->height();
-    int width = host->width();
-    int count = host->GetChildViewCount();
-
-    int y = 0;
-    for (int i = 0; i < count; i++) {
-      views::View* child = host->GetChildViewAt(i);
-      child->SetBounds(0, y, width, height / count);
-      y = height * (i + 1)/ count;
-    }
-  }
-
-  virtual gfx::Size GetPreferredSize(views::View* host) {
-    int count = host->GetChildViewCount();
-    gfx::Rect bounds;
-    int y = 0;
-    for (int i = 0; i < count; i++) {
-      views::View* child = host->GetChildViewAt(i);
-      gfx::Size size = child->GetPreferredSize();
-      gfx::Rect child_bounds(0, y, size.width(), size.height());
-      bounds = bounds.Union(child_bounds);
-      y += size.height();
-    }
-    return bounds.size();
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(BoxLayout);
-};
-
 // A layout manager that layouts a single child at
 // the center of the host view.
 class CenterLayout : public views::LayoutManager {
  public:
-  CenterLayout() {
-  }
-  virtual ~CenterLayout() {
-  }
+  CenterLayout() {}
+  virtual ~CenterLayout() {}
 
   // Overridden from LayoutManager:
   virtual void Layout(views::View* host) {
@@ -95,24 +52,24 @@ using views::Widget;
 // WidgetExample demonstrates how to create a popup widget.
 class WidgetExample : public ExampleBase, public views::ButtonListener {
  public:
-  explicit WidgetExample(ExamplesMain* main) : ExampleBase(main) {
-  }
+  explicit WidgetExample(ExamplesMain* main) : ExampleBase(main) {}
 
   virtual ~WidgetExample() {}
 
-  virtual std::wstring GetExampleTitle() {
-    return L"Widget";
-  }
+  virtual std::wstring GetExampleTitle() { return L"Widget"; }
 
   virtual void CreateExampleView(views::View* container) {
-    container->SetLayoutManager(new BoxLayout());
+    container->SetLayoutManager(new BoxLayout(BoxLayout::kHorizontal, 2));
     BuildButton(container, L"Create a popup widget", POPUP);
     BuildButton(container, L"Create a transparent popup widget",
                 TRANSPARENT_POPUP);
 #if defined(OS_LINUX)
-    BuildButton(container, L"Create a child widget", CHILD);
-    BuildButton(container,
-                L"Create a transparent child widget", TRANSPARENT_CHILD);
+    views::View* vert_container = new views::View();
+    container->AddChildView(vert_container);
+    vert_container->SetLayoutManager(new BoxLayout(BoxLayout::kVertical, 20));
+    BuildButton(vert_container, L"Create a child widget", CHILD);
+    BuildButton(vert_container, L"Create a transparent child widget",
+                TRANSPARENT_CHILD);
 #endif
   }
 
@@ -142,7 +99,8 @@ class WidgetExample : public ExampleBase, public views::ButtonListener {
     native_button->set_tag(CLOSE_WIDGET);
 
     views::View* button_container = new views::View();
-    button_container->SetLayoutManager(new BoxLayout);
+    button_container->SetLayoutManager(
+        new BoxLayout(BoxLayout::kHorizontal, 1));
     button_container->AddChildView(close_button);
     button_container->AddChildView(native_button);
 
diff --git a/views/views.gyp b/views/views.gyp
index 2344e00..0e58701 100644
--- a/views/views.gyp
+++ b/views/views.gyp
@@ -1,4 +1,4 @@
-# Copyright (c) 2009 The Chromium Authors. All rights reserved.
+# Copyright (c) 2010 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.
 
@@ -373,6 +373,8 @@
         '..',
       ],
       'sources': [
+	'examples/box_layout.cc',
+	'examples/box_layout.h',
         'examples/button_example.h',
         'examples/combobox_example.h',
         'examples/example_base.cc',