Make views::Label and views::Link auto-color themselves to be readable over their background colo...

chrome/browser/chromeos/login/network_selection_view.cc

 // Copyright (c) 2011 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/chromeos/login/network_selection_view.h"
 
 #include <signal.h>
 #include <sys/types.h>
 
 #include <string>
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/chromeos/login/helper.h"
 #include "chrome/browser/chromeos/login/keyboard_switch_menu.h"
 #include "chrome/browser/chromeos/login/language_switch_menu.h"
 #include "chrome/browser/chromeos/login/proxy_settings_dialog.h"
 #include "chrome/browser/chromeos/login/rounded_rect_painter.h"
 #include "chrome/browser/chromeos/login/views_network_screen_actor.h"
 #include "chrome/browser/chromeos/login/wizard_accessibility_helper.h"
 #include "chrome/browser/chromeos/status/network_dropdown_button.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/color_utils.h"
 #include "ui/gfx/size.h"
 #include "views/controls/label.h"
 #include "views/controls/link.h"
 #include "views/controls/button/text_button.h"
 #include "views/controls/throbber.h"
 #include "views/layout/fill_layout.h"
 #include "views/layout/grid_layout.h"
 #include "views/layout/layout_constants.h"
 #include "views/widget/widget.h"
 #include "views/window/non_client_view.h"
@@ skipping 246 matching lines @@
   contents_view_ = new views::View();
 
   entire_screen_view_ = new views::View();
   AddChildView(entire_screen_view_);
 
   // Use rounded rect background.
   views::Painter* painter = CreateWizardPainter(
       &BorderDefinition::kScreenBorder);
   contents_view_->set_background(
       views::Background::CreateBackgroundPainter(true, painter));
+  SkColor background_color = color_utils::AlphaBlend(
+      BorderDefinition::kScreenBorder.top_color,
+      BorderDefinition::kScreenBorder.bottom_color, 128);
 
   welcome_label_ = new views::Label();
-  welcome_label_->SetColor(kWelcomeColor);
+  welcome_label_->SetEnabledColor(kWelcomeColor);
+  welcome_label_->SetBackgroundColor(background_color);
   welcome_label_->SetMultiLine(true);
 
   select_language_label_ = new views::Label();
+  select_language_label_->SetBackgroundColor(background_color);
 
   languages_menubutton_ = new NotifyingMenuButton(
       NULL, std::wstring(), actor_->language_switch_menu(), true, actor_);
   InitMenuButtonProperties(languages_menubutton_);
 
   select_keyboard_label_ = new views::Label();
+  select_keyboard_label_->SetBackgroundColor(background_color);
 
   keyboards_menubutton_ = new DropDownButton(
       NULL /* listener */, L"", actor_->keyboard_switch_menu(),
       true /* show_menu_marker */);
   InitMenuButtonProperties(keyboards_menubutton_);
 
   select_network_label_ = new views::Label();
+  select_network_label_->SetBackgroundColor(background_color);
 
   network_dropdown_ = new NetworkControlReportOnActivate(false,
                                                          GetNativeWindow(),
                                                          actor_);
   InitMenuButtonProperties(network_dropdown_);
 
   connecting_network_label_ = new views::Label();
+  connecting_network_label_->SetBackgroundColor(background_color);
   connecting_network_label_->SetVisible(false);
 
   proxy_settings_link_ = new views::Link();
   proxy_settings_link_->set_listener(this);
   proxy_settings_link_->SetVisible(true);
   proxy_settings_link_->set_focusable(true);
-  proxy_settings_link_->SetNormalColor(login::kLinkColor);
-  proxy_settings_link_->SetHighlightedColor(login::kLinkColor);
+  proxy_settings_link_->SetBackgroundColor(background_color);
+  proxy_settings_link_->SetEnabledColor(login::kLinkColor);
+  proxy_settings_link_->SetPressedColor(login::kLinkColor);
 
   UpdateLocalizedStringsAndFonts();
 }
 
 void NetworkSelectionView::UpdateLocalizedStringsAndFonts() {
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   gfx::Font welcome_label_font = rb.GetFont(ResourceBundle::LargeFont).
       DeriveFont(kWelcomeTitleFontDelta, gfx::Font::BOLD);
   gfx::Font select_label_font = rb.GetFont(ResourceBundle::MediumFont).
       DeriveFont(kNetworkSelectionLabelFontDelta);
@@ skipping 134 matching lines @@
           l10n_util::GetStringUTF16(IDS_NETWORK_SELECTION_CONTINUE_BUTTON)));
   continue_button_->SetEnabled(is_continue_enabled);
 }
 
 void NetworkSelectionView::UpdateConnectingNetworkLabel() {
   connecting_network_label_->SetText(l10n_util::GetStringFUTF16(
       IDS_NETWORK_SELECTION_CONNECTING, network_id_));
 }
 
 }  // namespace chromeos