[vr] Introduce ColorScheme

chrome/browser/android/vr_shell/color_scheme.cc

Index: chrome/browser/android/vr_shell/color_scheme.cc
diff --git a/chrome/browser/android/vr_shell/color_scheme.cc b/chrome/browser/android/vr_shell/color_scheme.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a662ed84add6dfb669d28dd9ce23fc165f5e825e
--- /dev/null
+++ b/chrome/browser/android/vr_shell/color_scheme.cc
@@ -0,0 +1,40 @@
+// 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 "chrome/browser/android/vr_shell/color_scheme.h"
+
+namespace vr_shell {
+
+namespace {
+
+static ColorScheme kColorSchemes[ColorScheme::kNumModes];
+
+void InitializeColorSchemes() {
+  static bool initialized = false;
+  if (initialized)
+    return;
+
+  ColorScheme& normal_scheme = kColorSchemes[ColorScheme::kModeNormal];
+  normal_scheme.horizon = {0.89, 0.89, 0.89, 1.0};
+  normal_scheme.floor = {0.811, 0.811, 0.811, 1.0};
+  normal_scheme.ceiling = {0.859, 0.859, 0.859, 1.0};
+  normal_scheme.floor_grid = {1.0, 1.0, 1.0, 1.0};
+
+  ColorScheme& fullscreen_scheme = kColorSchemes[ColorScheme::kModeFullscreen];
+  fullscreen_scheme.horizon = {0.039215686, 0.0, 0.082352941, 1.0};
+  fullscreen_scheme.floor = {0.02745098, 0.058823529, 0.109803922, 1.0};
+  fullscreen_scheme.ceiling = {0.015686275, 0.031372549, 0.058823529, 1.0};
+  fullscreen_scheme.floor_grid = {0.639215686, 0.878431373, 1.0, 0.5};
+
+  initialized = true;
+}
+
+}  // namespace
+
+const ColorScheme& ColorScheme::GetColorScheme(ColorScheme::Mode mode) {
+  InitializeColorSchemes();
+  return kColorSchemes[static_cast<int>(mode)];
+}
+
+}  // namespace vr_shell