views: add layout delegates

chrome/browser/ui/views/harmony/harmony_layout_delegate.cc

+// Copyright 2016 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/ui/views/harmony/harmony_layout_delegate.h"
+
+namespace chrome {
+
+static HarmonyLayoutDelegate harmony_layout_delegate_;

[sky, 2016/11/14 21:49:32]

Style guide says static should only be PODs.

[Elly Fong-Jones, 2016/11/15 17:13:39]

Ack. I misread the definition of POD in the C++ spec, so I thought this was POD,
but it has virtual methods :( oh well; switched to LazyInstance.

+
+// static
+HarmonyLayoutDelegate* HarmonyLayoutDelegate::Get() {
+  return &harmony_layout_delegate_;
+}
+
+int HarmonyLayoutDelegate::GetLayoutDistance(LayoutDistanceType type) const {
+  const int kLayoutUnit = 16;
+  switch (type) {
+    case PANEL_VERT_MARGIN:
+      return kLayoutUnit;
+    case RELATED_BUTTON_HORIZONTAL_SPACING:
+      return kLayoutUnit / 2;
+    case RELATED_CONTROL_HORIZONTAL_SPACING:
+      return kLayoutUnit;
+    case RELATED_CONTROL_VERTICAL_SPACING:
+      return kLayoutUnit / 2;
+    case UNRELATED_CONTROL_VERTICAL_SPACING:
+      return kLayoutUnit;
+    case UNRELATED_CONTROL_LARGE_VERTICAL_SPACING:
+      return kLayoutUnit;
+    case BUTTON_VEDGE_MARGIN_NEW:
+      return kLayoutUnit;
+    case BUTTON_HEDGE_MARGIN_NEW:
+      return kLayoutUnit;
+  }
+}
+
+bool HarmonyLayoutDelegate::UseExtraDialogPadding() const {
+  return false;
+}
+
+}  // namespace chrome