Add DisplayPlacement/Layout mojoms + StructTraits.

ui/display/mojo/display_layout_struct_traits.cc

Index: ui/display/mojo/display_layout_struct_traits.cc
diff --git a/ui/display/mojo/display_layout_struct_traits.cc b/ui/display/mojo/display_layout_struct_traits.cc
new file mode 100644
index 0000000000000000000000000000000000000000..192f1f59168882c15aba16855f32873423537645
--- /dev/null
+++ b/ui/display/mojo/display_layout_struct_traits.cc
@@ -0,0 +1,110 @@
+// Copyright 2017 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/display/mojo/display_layout_struct_traits.h"
+
+namespace mojo {
+
+display::mojom::Position
+EnumTraits<display::mojom::Position, display::DisplayPlacement::Position>::
+    ToMojom(display::DisplayPlacement::Position rotation) {
+  switch (rotation) {
+    case display::DisplayPlacement::TOP:
+      return display::mojom::Position::TOP;
+    case display::DisplayPlacement::RIGHT:
+      return display::mojom::Position::RIGHT;
+    case display::DisplayPlacement::BOTTOM:
+      return display::mojom::Position::BOTTOM;
+    case display::DisplayPlacement::LEFT:
+      return display::mojom::Position::LEFT;
+  }
+  NOTREACHED();
+  return display::mojom::Position::TOP;
+}
+
+bool EnumTraits<display::mojom::Position, display::DisplayPlacement::Position>::
+    FromMojom(display::mojom::Position rotation,
+              display::DisplayPlacement::Position* out) {
+  switch (rotation) {
+    case display::mojom::Position::TOP:
+      *out = display::DisplayPlacement::TOP;
+      return true;
+    case display::mojom::Position::RIGHT:
+      *out = display::DisplayPlacement::RIGHT;
+      return true;
+    case display::mojom::Position::BOTTOM:
+      *out = display::DisplayPlacement::BOTTOM;
+      return true;
+    case display::mojom::Position::LEFT:
+      *out = display::DisplayPlacement::LEFT;
+      return true;
+  }
+  return false;
+}
+
+display::mojom::OffsetReference
+EnumTraits<display::mojom::OffsetReference,
+           display::DisplayPlacement::OffsetReference>::
+    ToMojom(display::DisplayPlacement::OffsetReference rotation) {
+  switch (rotation) {
+    case display::DisplayPlacement::TOP_LEFT:
+      return display::mojom::OffsetReference::TOP_LEFT;
+    case display::DisplayPlacement::BOTTOM_RIGHT:
+      return display::mojom::OffsetReference::BOTTOM_RIGHT;
+  }
+  NOTREACHED();
+  return display::mojom::OffsetReference::TOP_LEFT;
+}
+
+bool EnumTraits<display::mojom::OffsetReference,
+                display::DisplayPlacement::OffsetReference>::
+    FromMojom(display::mojom::OffsetReference rotation,
+              display::DisplayPlacement::OffsetReference* out) {
+  switch (rotation) {
+    case display::mojom::OffsetReference::TOP_LEFT:
+      *out = display::DisplayPlacement::TOP_LEFT;
+      return true;
+    case display::mojom::OffsetReference::BOTTOM_RIGHT:
+      *out = display::DisplayPlacement::BOTTOM_RIGHT;
+      return true;
+  }
+  return false;
+}
+
+bool StructTraits<display::mojom::DisplayPlacementDataView,
+                  display::DisplayPlacement>::
+    Read(display::mojom::DisplayPlacementDataView data,
+         display::DisplayPlacement* out) {
+  out->display_id = data.display_id();
+  out->parent_display_id = data.parent_display_id();
+  out->offset = data.offset();
+
+  if (!data.ReadPosition(&out->position))
+    return false;
+
+  if (!data.ReadOffsetReference(&out->offset_reference))
+    return false;
+
+  return true;
+}
+
+bool StructTraits<display::mojom::DisplayLayoutDataView,
+                  std::unique_ptr<display::DisplayLayout>>::
+    Read(display::mojom::DisplayLayoutDataView data,
+         std::unique_ptr<display::DisplayLayout>* out) {
+  auto display_layout = base::MakeUnique<display::DisplayLayout>();
+
+  if (!data.ReadPlacementList(&display_layout->placement_list))
+    return false;
+
+  display_layout->mirrored = data.mirrored();
+  display_layout->default_unified = data.default_unified();
+  display_layout->primary_id = data.primary_display_id();
+
+  *out = std::move(display_layout);
+
+  return true;
+}
+
+}  // namespace mojo