Add display scaling and rotation shortcuts to keyboard overlay.

chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc

 // Copyright (c) 2012 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/webui/chromeos/keyboard_overlay_ui.h"
 
+#include "ash/display/display_manager.h"
+#include "ash/shell.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_service.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/input_method/input_method_configuration.h"
 #include "chrome/browser/chromeos/input_method/input_method_manager.h"
 #include "chrome/browser/chromeos/input_method/xkeyboard.h"
@@ skipping 168 matching lines @@
   { "keyboardOverlayPreviousWord", IDS_KEYBOARD_OVERLAY_PREVIOUS_WORD },
   { "keyboardOverlayPrint", IDS_KEYBOARD_OVERLAY_PRINT },
   { "keyboardOverlayReloadCurrentPage",
     IDS_KEYBOARD_OVERLAY_RELOAD_CURRENT_PAGE },
   { "keyboardOverlayReloadIgnoringCache",
     IDS_KEYBOARD_OVERLAY_RELOAD_IGNORING_CACHE },
   { "keyboardOverlayReopenLastClosedTab",
     IDS_KEYBOARD_OVERLAY_REOPEN_LAST_CLOSED_TAB },
   { "keyboardOverlayReportIssue", IDS_KEYBOARD_OVERLAY_REPORT_ISSUE },
   { "keyboardOverlayResetZoom", IDS_KEYBOARD_OVERLAY_RESET_ZOOM },
+  { "keyboardOverlayRotateScreen", IDS_KEYBOARD_OVERLAY_ROTATE_SCREEN },
   { "keyboardOverlaySave", IDS_KEYBOARD_OVERLAY_SAVE },
+  { "keyboardOverlayScaleDownUi", IDS_KEYBOARD_OVERLAY_SCALE_DOWN_UI },
+  { "keyboardOverlayScaleUpUi", IDS_KEYBOARD_OVERLAY_SCALE_UP_UI },
   { "keyboardOverlayScreenshotRegion",
     IDS_KEYBOARD_OVERLAY_SCREENSHOT_REGION },
   { "keyboardOverlayScrollUpOnePage",
     IDS_KEYBOARD_OVERLAY_SCROLL_UP_ONE_PAGE },
   { "keyboardOverlaySelectAll", IDS_KEYBOARD_OVERLAY_SELECT_ALL },
   { "keyboardOverlaySelectPreviousInputMethod",
     IDS_KEYBOARD_OVERLAY_SELECT_PREVIOUS_INPUT_METHOD },
   { "keyboardOverlaySelectWordAtATime",
     IDS_KEYBOARD_OVERLAY_SELECT_WORD_AT_A_TIME },
   { "keyboardOverlayShowMessageCenter",
@@ skipping 38 matching lines @@
     source->AddLocalizedString(kI18nContentToMessage[i].i18n_content,
                                kI18nContentToMessage[i].message);
   }
 
   source->AddString("keyboardOverlayLearnMoreURL", UTF8ToUTF16(kLearnMoreURL));
   const char* has_diamond_key_value =
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kHasChromeOSDiamondKey) ? "true" : "false";
   source->AddString("keyboardOverlayHasChromeOSDiamondKey",
                     has_diamond_key_value);
+  ash::Shell* shell = ash::Shell::GetInstance();
+  if (shell) {
+    ash::internal::DisplayManager* display_manager = shell->display_manager();
+    source->AddString("keyboardOverlayIsDisplayRotationEnabled",
+                      display_manager->IsDisplayRotationEnabled() ?
+                      "true" : "false");

[xiyuan, 2013/03/23 05:49:09]

nit: you could use source->AddBoolean and test that directly in js.

[mazda, 2013/03/23 06:28:45]

Cool! Thanks.

+    source->AddString("keyboardOverlayIsDisplayUIScalingEnabled",
+                      display_manager->IsDisplayUIScalingEnabled() ?
+                      "true" : "false");
+  }
   source->SetJsonPath("strings.js");
   source->SetUseJsonJSFormatV2();
   source->AddResourcePath("keyboard_overlay.js", IDR_KEYBOARD_OVERLAY_JS);
   source->SetDefaultResource(IDR_KEYBOARD_OVERLAY_HTML);
   return source;
 }
 
 }  // namespace
 
 // The handler for Javascript messages related to the "keyboardoverlay" view.
@@ skipping 98 matching lines @@
 
 KeyboardOverlayUI::KeyboardOverlayUI(content::WebUI* web_ui)
     : WebDialogUI(web_ui) {
   Profile* profile = Profile::FromWebUI(web_ui);
   KeyboardOverlayHandler* handler = new KeyboardOverlayHandler(profile);
   web_ui->AddMessageHandler(handler);
 
   // Set up the chrome://keyboardoverlay/ source.
   content::WebUIDataSource::Add(profile, CreateKeyboardOverlayUIHTMLSource());
 }