Refactor screen/monitor so that gfx::Screen returns monitor object.

ui/gfx/screen_aura.cc

+// Copyright (c) 2012 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/gfx/screen.h"
+
+#include "base/logging.h"
+#include "ui/gfx/monitor.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/screen_impl.h"
+
+namespace gfx {
+
+// gfx can't depend upon aura, otherwise we have circular dependencies. So,
+// gfx::Screen is pluggable and Desktop plugs in the real implementation.
+namespace {
+ScreenImpl* g_instance_ = NULL;
+
+// TODO(erg): Figure out what to do about the Screen class. For now, I've
+// added default values for when a Screen instance class isn't passed in, but
+// this is the wrong thing.
+void SetDefaultBounds(Monitor* monitor_out) {
+  static Rect* default_bounds = new gfx::Rect(0, 0, 800, 800);
+  monitor_out->set_bounds(*default_bounds);
+  monitor_out->set_work_area(*default_bounds);
+};
+
+}
+
+// static
+void Screen::SetInstance(ScreenImpl* screen) {
+  delete g_instance_;
+  g_instance_ = screen;
+}
+
+// static
+Point Screen::GetCursorScreenPoint() {
+  if (!g_instance_)

[Ben Goodger (Google), 2012/04/13 19:57:19]

Is this for gfx tests? Can you just provide a stub impl nearby for this purpose?

[oshima, 2012/04/13 21:18:41]

I think erg added this. Elliot, do we still need this?

[oshima, 2012/04/14 15:23:36]

talked to erg and this is no longer necessary. Removed.

On 2012/04/13 21:18:41, oshima wrote:

+    return Point();
+  return g_instance_->GetCursorScreenPoint();
+}
+
+// static
+NativeWindow Screen::GetWindowAtCursorScreenPoint() {
+  if (!g_instance_)
+    return NULL;
+  return g_instance_->GetWindowAtCursorScreenPoint();
+}
+
+// static
+int Screen::GetNumMonitors() {
+  if (!g_instance_)
+    return 1;
+  return g_instance_->GetNumMonitors();
+}
+
+// static
+void Screen::GetMonitorNearestWindow(NativeWindow window,
+                                     Monitor* monitor_out) {
+  if (!g_instance_)
+    SetDefaultBounds(monitor_out);
+  else
+    g_instance_->GetMonitorNearestWindow(window, monitor_out);
+}
+
+// static
+void Screen::GetMonitorNearestPoint(const Point& point, Monitor* monitor_out) {
+  if (!g_instance_)
+    SetDefaultBounds(monitor_out);
+  else
+    g_instance_->GetMonitorNearestPoint(point, monitor_out);
+}
+
+// static
+void Screen::GetPrimaryMonitor(Monitor* monitor_out) {
+  if (!g_instance_)
+    SetDefaultBounds(monitor_out);
+  else
+    g_instance_->GetPrimaryMonitor(monitor_out);
+}
+
+// static
+void Screen::GetMonitorMatching(const Rect& match_rect, Monitor* monitor_out) {
+  if (!g_instance_)
+    SetDefaultBounds(monitor_out);
+  else
+    g_instance_->GetMonitorNearestPoint(match_rect.CenterPoint(), monitor_out);
+}
+
+}  // namespace gfx