This adds in the ability for Chrome to generate windows with snapshots of all...

chrome/browser/chromeos/wm_overview_snapshot.cc

+// 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 "chrome/browser/chromeos/wm_overview_snapshot.h"
+
+#include <vector>
+
+#include "app/x11_util.h"
+#include "chrome/browser/browser.h"
+#include "chrome/browser/browser_window.h"
+#include "chrome/browser/chromeos/wm_ipc.h"
+#include "views/border.h"
+#include "views/controls/image_view.h"
+#include "views/controls/label.h"
+#include "views/grid_layout.h"
+
+using views::ColumnSet;
+using views::GridLayout;
+using std::vector;
+
+#if !defined(OS_CHROMEOS)
+#error This file is only meant to be compiled for ChromeOS
+#endif
+
+namespace chromeos {
+
+WmOverviewSnapshot::WmOverviewSnapshot()
+  : WidgetGtk(TYPE_WINDOW),
+    snapshot_view_(NULL),
+    index_(-1),
+    configured_snapshot_(false) {
+}
+
+void WmOverviewSnapshot::Init(const gfx::Size& size,
+                              Browser* browser,
+                              int index) {
+  snapshot_view_ = new views::ImageView();
+  MakeTransparent();
+
+  snapshot_view_->set_background(
+      views::Background::CreateSolidBackground(SK_ColorWHITE));
+  snapshot_view_->set_border(
+      views::Border::CreateSolidBorder(1, SkColorSetRGB(176, 176, 176)));
+
+  WidgetGtk::Init(NULL, gfx::Rect(gfx::Point(0,0), size));
+
+  SetContentsView(snapshot_view_);
+
+  UpdateIndex(browser, index);
+}
+
+
+void WmOverviewSnapshot::UpdateIndex(Browser* browser, int index) {
+  vector<int> params;
+  params.push_back(x11_util::GetX11WindowFromGtkWidget(
+      GTK_WIDGET(browser->window()->GetNativeHandle())));
+  params.push_back(index);
+  WmIpc::instance()->SetWindowType(
+      GetNativeView(),
+      WmIpc::WINDOW_TYPE_CHROME_TAB_SNAPSHOT,
+      &params);
+  index_ = index;
+}
+
+void WmOverviewSnapshot::SetImage(const SkBitmap& image) {
+  CHECK(snapshot_view_) << "Init not called before setting image.";
+  snapshot_view_->SetImage(image);
+
+  // Reset the bounds to the size of the image.
+  gfx::Rect bounds;
+  GetBounds(&bounds, false);
+  bounds.set_width(image.width());
+  bounds.set_height(image.height());
+  SetBounds(bounds);
+
+  configured_snapshot_ = true;
+}
+
+}  // namespace chromeos