CrOS Tablet Window management - Split Screen part I

ash/wm/workspace/backdrop_controller.cc

Index: ash/wm/workspace/backdrop_controller.cc
diff --git a/ash/wm/workspace/backdrop_controller.cc b/ash/wm/workspace/backdrop_controller.cc
index b73113f0d316c163fa7d94d55429c69231c8c0ae..ae52971da16cd90f5ef9afaea8627ca46bf14f71 100644
--- a/ash/wm/workspace/backdrop_controller.cc
+++ b/ash/wm/workspace/backdrop_controller.cc
@@ -141,6 +141,19 @@ void BackdropController::OnOverviewModeStarting() {
 }
 
 void BackdropController::OnOverviewModeEnded() {
+  if (Shell::Get()->IsSplitViewModeActive())
+    return;
+
+  force_hidden_ = false;
+  UpdateBackdrop();
+}
+
+void BackdropController::OnSplitViewModeStarting() {
+  force_hidden_ = true;
+  Hide();
+}
+
+void BackdropController::OnSplitViewModeEnded() {
   force_hidden_ = false;

[oshima, 2017/06/14 05:45:47]

what happen if I close the snapped window while the other side is in overview
mode?

[xdai1, 2017/06/15 22:11:42]

I didn't handle it in the previous patch. Handled it in the new patch. If one of
the snapped window was closed while the other side is in overview mode, end
split view mode and overview mode at the same time.

   UpdateBackdrop();
 }