Adds UI components for desktop notifications, including balloon view classes ...

chrome/browser/notifications/balloon_collection_win.cc

+// Copyright (c) 2009 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/notifications/balloon_collection.h"
+
+#include "base/gfx/rect.h"
+#include "base/logging.h"
+#include "base/stl_util-inl.h"
+#include "chrome/browser/notifications/balloon.h"
+#include "chrome/browser/views/notifications/balloon_view.h"
+
+namespace {
+
+void GetMainScreenWorkArea(gfx::Rect* bounds) {
+  DCHECK(bounds);
+  RECT work_area = {0};
+  if (::SystemParametersInfo(SPI_GETWORKAREA, 0, &work_area, 0)) {
+    bounds->SetRect(work_area.left, work_area.top,
+                    work_area.right, work_area.bottom);
+  } else {
+    // If call to ::SystemParametersInfo fails for some reason, we simply get
+    // the full screen size as an alternative.
+    bounds->SetRect(0, 0,
+                    ::GetSystemMetrics(SM_CXSCREEN) - 1,
+                    ::GetSystemMetrics(SM_CYSCREEN) - 1);
+  }
+}
+
+}  // namespace
+
+Balloon* BalloonCollectionImpl::MakeBalloon(const Notification& notification,
+                                            Profile* profile) {
+  Balloon* balloon = new Balloon(notification, profile, this);
+  balloon->set_view(new BalloonViewImpl());
+  gfx::Size size(layout_.min_balloon_width(), layout_.min_balloon_height());
+  balloon->set_size(size);
+  return balloon;
+}
+
+bool BalloonCollectionImpl::Layout::RefreshSystemMetrics() {
+  bool changed = false;
+
+  gfx::Rect new_work_area(work_area_.x(), work_area_.y(),
+                          work_area_.width(), work_area_.height());
+  GetMainScreenWorkArea(&new_work_area);
+  if (!work_area_.Equals(new_work_area)) {
+    work_area_.SetRect(new_work_area.x(), new_work_area.y(),
+                       new_work_area.width(), new_work_area.height());
+    changed = true;
+  }
+
+  return changed;
+}