Refactor the calculation of desktop size to use an existing common method rather than windows-specific logic. Part of notifications port to linux.

BUG=23954
TEST=none

Review URL: http://codereview.chromium.org/524039

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@35575 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 17 insertions, 45 deletions

diff --git a/chrome/browser/notifications/balloon_collection.cc b/chrome/browser/notifications/balloon_collection.cc
index ed8a671..e148911 100644
--- a/chrome/browser/notifications/balloon_collection.cc
+++ b/chrome/browser/notifications/balloon_collection.cc
@@ -8,6 +8,7 @@
 #include "base/logging.h"
 #include "base/stl_util-inl.h"
 #include "chrome/browser/notifications/balloon.h"
+#include "chrome/browser/window_sizer.h"
 
 namespace {
 
@@ -207,3 +208,19 @@ gfx::Point BalloonCollectionImpl::Layout::NextPosition(
   }
   return gfx::Point(x, y);
 }
+
+bool BalloonCollectionImpl::Layout::RefreshSystemMetrics() {
+  bool changed = false;
+
+  scoped_ptr<WindowSizer::MonitorInfoProvider> info_provider(
+      WindowSizer::CreateDefaultMonitorInfoProvider());
+
+  gfx::Rect new_work_area = info_provider->GetPrimaryMonitorWorkArea();
+  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;
+}
diff --git a/chrome/browser/notifications/balloon_collection_linux.cc b/chrome/browser/notifications/balloon_collection_linux.cc
index e1439f2..bab6895 100644
--- a/chrome/browser/notifications/balloon_collection_linux.cc
+++ b/chrome/browser/notifications/balloon_collection_linux.cc
@@ -11,8 +11,3 @@ Balloon* BalloonCollectionImpl::MakeBalloon(const Notification& notification,
   // TODO(johnnyg): http://crbug.com/23954.  Hook up to views.
   return new Balloon(notification, profile, this);
 }
-
-bool BalloonCollectionImpl::Layout::RefreshSystemMetrics() {
-  // TODO(johnnyg): http://crbug.com/23954.  Part of future Linux support.
-  return false;
-}
diff --git a/chrome/browser/notifications/balloon_collection_mac.mm b/chrome/browser/notifications/balloon_collection_mac.mm
index 2bff15e..6a652e0 100644
--- a/chrome/browser/notifications/balloon_collection_mac.mm
+++ b/chrome/browser/notifications/balloon_collection_mac.mm
@@ -12,8 +12,3 @@ Balloon* BalloonCollectionImpl::MakeBalloon(const Notification& notification,
   return new Balloon(notification, profile, this);
 }
 
-bool BalloonCollectionImpl::Layout::RefreshSystemMetrics() {
-  // TODO(johnnyg): http://crbug.com/23066.  Part of future Mac support.
-  return false;
-}
-
diff --git a/chrome/browser/notifications/balloon_collection_win.cc b/chrome/browser/notifications/balloon_collection_win.cc
index 53d9808..4c294cc 100644
--- a/chrome/browser/notifications/balloon_collection_win.cc
+++ b/chrome/browser/notifications/balloon_collection_win.cc
@@ -6,29 +6,9 @@
 
 #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);
@@ -37,18 +17,3 @@ Balloon* BalloonCollectionImpl::MakeBalloon(const Notification& notification,
   balloon->set_content_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;
-}