[vr] Introduce ColorScheme

chrome/browser/android/vr_shell/ui_scene_manager.cc

 // 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/ui_scene_manager.h"
 
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
+#include "chrome/browser/android/vr_shell/color_scheme.h"
 #include "chrome/browser/android/vr_shell/textures/close_button_texture.h"
 #include "chrome/browser/android/vr_shell/textures/ui_texture.h"
 #include "chrome/browser/android/vr_shell/ui_elements/audio_capture_indicator.h"
 #include "chrome/browser/android/vr_shell/ui_elements/button.h"
 #include "chrome/browser/android/vr_shell/ui_elements/exit_warning.h"
 #include "chrome/browser/android/vr_shell/ui_elements/loading_indicator.h"
 #include "chrome/browser/android/vr_shell/ui_elements/permanent_security_warning.h"
 #include "chrome/browser/android/vr_shell/ui_elements/screen_capture_indicator.h"
 #include "chrome/browser/android/vr_shell/ui_elements/screen_dimmer.h"
 #include "chrome/browser/android/vr_shell/ui_elements/transient_security_warning.h"
@@ skipping 34 matching lines @@
 static constexpr float kUrlBarVerticalOffset = -0.516 * kUrlBarDistance;
 
 static constexpr float kLoadingIndicatorWidth = 0.24 * kUrlBarDistance;
 static constexpr float kLoadingIndicatorHeight = 0.008 * kUrlBarDistance;
 static constexpr float kLoadingIndicatorOffset =
     -0.016 * kUrlBarDistance - kLoadingIndicatorHeight / 2;
 
 static constexpr float kSceneSize = 25.0;
 static constexpr float kSceneHeight = 4.0;
 static constexpr int kFloorGridlineCount = 40;
-static constexpr vr::Colorf kBackgroundHorizonColor = {0.57, 0.57, 0.57, 1.0};
-static constexpr vr::Colorf kBackgroundCenterColor = {0.48, 0.48, 0.48, 1.0};
 
 static constexpr float kFullscreenWidthDms = 1.138;
 static constexpr float kFullscreenHeightDms = 0.64;
 static constexpr float kFullscreenVerticalOffsetDms = 0.1;
 // Fullscreen distance calculated as value needed to make the content quad
 // extend down to the floor (with small pullback used to prevent actual
 // intersection). Note this assumes the vertical offset will always be offest
 // below the origin (ie negative).
 static constexpr float kFullscreenDistance =
     (kSceneHeight / 2.0) /
     ((kFullscreenVerticalOffsetDms + (kFullscreenHeightDms / 2.0)) + 0.01);
 
 static constexpr float kFullscreenHeight =
     kFullscreenHeightDms * kFullscreenDistance;
 static constexpr float kFullscreenWidth =
     kFullscreenWidthDms * kFullscreenDistance;
 static constexpr float kFullscreenVerticalOffset =
     -kFullscreenVerticalOffsetDms * kFullscreenDistance;
-static constexpr vr::Colorf kFullscreenHorizonColor = {0.1, 0.1, 0.1, 1.0};
-static constexpr vr::Colorf kFullscreenCenterColor = {0.2, 0.2, 0.2, 1.0};
 
 // Tiny distance to offset textures that should appear in the same plane.
 static constexpr float kTextureOffset = 0.01;
 
 }  // namespace
 
 UiSceneManager::UiSceneManager(VrBrowserInterface* browser,
                                UiScene* scene,
                                bool in_cct,
                                bool in_web_vr)
@@ skipping 146 matching lines @@
   std::unique_ptr<UiElement> element;
 
   // Floor.
   element = base::MakeUnique<UiElement>();
   element->set_debug_id(kFloor);
   element->set_id(AllocateId());
   element->set_size({kSceneSize, kSceneSize, 1.0});
   element->set_translation({0.0, -kSceneHeight / 2, 0.0});
   element->set_rotation({1.0, 0.0, 0.0, -M_PI / 2.0});
   element->set_fill(vr_shell::Fill::OPAQUE_GRADIENT);
-  element->set_edge_color(kBackgroundHorizonColor);
-  element->set_center_color(kBackgroundCenterColor);
+  element->set_edge_color(color_scheme().horizon);

[acondor_, 2017/05/25 15:34:41]

We could remove these calls and call UpdateBackgroundColor at the end of the
function instead.

[Ian Vollick, 2017/05/25 15:54:05]

Good call. That's much nicer. Done.

[amp, 2017/05/25 15:55:30]

I had thought about doing that as well.  It does have a nice consistency to
always set the colors through one mechanism.

+  element->set_center_color(color_scheme().floor);
   element->set_draw_phase(0);
   floor_ = element.get();
   content_elements_.push_back(element.get());
   scene_->AddUiElement(std::move(element));
 
   // Ceiling.
   element = base::MakeUnique<UiElement>();
   element->set_debug_id(kCeiling);
   element->set_id(AllocateId());
   element->set_fill(vr_shell::Fill::OPAQUE_GRADIENT);
   element->set_size({kSceneSize, kSceneSize, 1.0});
   element->set_translation({0.0, kSceneHeight / 2, 0.0});
   element->set_rotation({1.0, 0.0, 0.0, M_PI / 2});
   element->set_fill(vr_shell::Fill::OPAQUE_GRADIENT);
-  element->set_edge_color(kBackgroundHorizonColor);
-  element->set_center_color(kBackgroundCenterColor);
+  element->set_edge_color(color_scheme().horizon);
+  element->set_center_color(color_scheme().ceiling);
   element->set_draw_phase(0);
   ceiling_ = element.get();
   content_elements_.push_back(element.get());
   scene_->AddUiElement(std::move(element));
 
   // Floor grid.
   element = base::MakeUnique<UiElement>();
   element->set_debug_id(kFloorGrid);
   element->set_id(AllocateId());
-  element->set_fill(vr_shell::Fill::GRID_GRADIENT);
   element->set_size({kSceneSize, kSceneSize, 1.0});
   element->set_translation({0.0, -kSceneHeight / 2 + kTextureOffset, 0.0});
   element->set_rotation({1.0, 0.0, 0.0, -M_PI / 2});
   element->set_fill(vr_shell::Fill::GRID_GRADIENT);
-  element->set_center_color(kBackgroundHorizonColor);
-  vr::Colorf edge_color = kBackgroundHorizonColor;
+  element->set_center_color(color_scheme().horizon);
+  vr::Colorf edge_color = color_scheme().horizon;
   edge_color.a = 0.0;
   element->set_edge_color(edge_color);
   element->set_gridline_count(kFloorGridlineCount);
+  element->set_center_color(color_scheme().horizon);
   element->set_draw_phase(0);
   floor_grid_ = element.get();
   content_elements_.push_back(element.get());
   scene_->AddUiElement(std::move(element));
 
-  scene_->SetBackgroundColor(kBackgroundHorizonColor);
+  scene_->SetBackgroundColor(color_scheme().horizon);
 }
 
 void UiSceneManager::CreateUrlBar() {
   // TODO(cjgrant): Incorporate final size and position.
   auto url_bar = base::MakeUnique<UrlBar>(512);
   url_bar->set_debug_id(kUrlBar);
   url_bar->set_id(AllocateId());
   url_bar->set_translation({0, kUrlBarVerticalOffset, -kUrlBarDistance});
   url_bar->set_size({kUrlBarWidth, kUrlBarHeight, 1});
   url_bar->SetBackButtonCallback(
@@ skipping 55 matching lines @@
   for (UiElement* element : content_elements_) {
     element->SetEnabled(!web_vr_mode_);
   }
 
   // Update content quad parameters depending on fullscreen.
   // TODO(http://crbug.com/642937): Animate fullscreen transitions.
   if (fullscreen_) {
     main_content_->set_translation(
         {0, kFullscreenVerticalOffset, -kFullscreenDistance});
     main_content_->set_size({kFullscreenWidth, kFullscreenHeight, 1});
-
-    ConfigureBackgroundColor(kFullscreenCenterColor, kFullscreenHorizonColor);
   } else {
     // Note that main_content_ is already visible in this case.
     main_content_->set_translation(
         {0, kContentVerticalOffset, -kContentDistance});
     main_content_->set_size({kContentWidth, kContentHeight, 1});
-
-    ConfigureBackgroundColor(kBackgroundCenterColor, kBackgroundHorizonColor);
   }
 
+  UpdateBackgroundColor();
   scene_->SetBackgroundDistance(main_content_->translation().z() *
                                 -kBackgroundDistanceMultiplier);
 }
 
-void UiSceneManager::ConfigureBackgroundColor(vr::Colorf center_color,
-                                              vr::Colorf horizon_color) {
-  scene_->SetBackgroundColor(horizon_color);
-  floor_->set_edge_color(horizon_color);
-  floor_->set_center_color(center_color);
-  ceiling_->set_edge_color(horizon_color);
-  ceiling_->set_center_color(center_color);
-  floor_grid_->set_center_color(horizon_color);
-  vr::Colorf edge_color = horizon_color;
-  edge_color.a = 0.0;
-  floor_grid_->set_edge_color(edge_color);
+void UiSceneManager::UpdateBackgroundColor() {
+  scene_->SetBackgroundColor(color_scheme().horizon);
+  ceiling_->set_center_color(color_scheme().ceiling);
+  ceiling_->set_edge_color(color_scheme().horizon);
+  floor_->set_center_color(color_scheme().floor);
+  floor_->set_edge_color(color_scheme().horizon);
+  floor_grid_->set_center_color(color_scheme().grid);
+  vr::Colorf floor_grid_edge_color = color_scheme().grid;
+  floor_grid_edge_color.a = 0.0;
+  floor_grid_->set_edge_color(floor_grid_edge_color);
 }
 
 void UiSceneManager::SetAudioCapturingIndicator(bool enabled) {
   audio_capture_indicator_->set_visible(enabled);
 }
 
 void UiSceneManager::SetVideoCapturingIndicator(bool enabled) {
   video_capture_indicator_->set_visible(enabled);
 }
 
@@ skipping 70 matching lines @@
                                               bool can_go_forward) {}
 
 void UiSceneManager::OnCloseButtonClicked() {
   browser_->ExitCct();
 }
 
 int UiSceneManager::AllocateId() {
   return next_available_id_++;
 }
 
+const ColorScheme& UiSceneManager::color_scheme() const {
+  return ColorScheme::GetColorScheme(fullscreen_ ? ColorScheme::kModeFullscreen
+                                                 : ColorScheme::kModeNormal);
+}
+
 }  // namespace vr_shell