Wallpaper manager backend APIs

ash/desktop_background/desktop_background_resources.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 "ash/desktop_background/desktop_background_resources.h"
 
 #include "base/logging.h"
 #include "base/rand_util.h"
 #include "grit/ui_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
 
 namespace {
 
+// Keeps in sync (same order) with WallpaperLayout enum in header file.
+const char* kWallpaperLayoutArrays[] = {
+    "CENTER",
+    "CENTER_CROPPED",
+    "STRETCH",
+    "TILE"
+};
+
 const ash::WallpaperInfo kDefaultWallpapers[] = {
 #if !defined(GOOGLE_CHROME_BUILD)
     {
         IDR_AURA_WALLPAPERS_ROMAINGUY_0,
         IDR_AURA_WALLPAPERS_ROMAINGUY_0_THUMB,
         ash::CENTER_CROPPED,
         "Romain Guy",
         "http://www.curious-creature.org"
     },
 #else
@@ skipping 189 matching lines @@
     },
     {
         IDR_AURA_WALLPAPERS_5_GRADIENT7,
         IDR_AURA_WALLPAPERS_5_GRADIENT7_THUMB,
         ash::TILE,
         "Chromium",
         "http://www.chromium.org"
     },
 };
 
+const int kWallpaperLayoutCount = arraysize(kWallpaperLayoutArrays);
 const int kDefaultWallpaperCount = arraysize(kDefaultWallpapers);
 const int kInvalidWallpaperIndex = -1;
 const int kSolidColorIndex = -2;
 
 // TODO(saintlou): These hardcoded indexes, although checked against the size
 // of the array are really hacky.
 #if defined(GOOGLE_CHROME_BUILD)
 const int kDefaultWallpaperIndex = 16; // IDR_AURA_WALLPAPERS_3_URBAN0
 const int kLastRandomWallpaperIndex = 19; // The first 20 are random.
 const int kGuestWallpaperIndex = 26;   // IDR_AURA_WALLPAPERS_5_GRADIENT6
@@ skipping 17 matching lines @@
 
 int GetGuestWallpaperIndex() {
   DCHECK(kGuestWallpaperIndex < kDefaultWallpaperCount);
   return std::min(kGuestWallpaperIndex, kDefaultWallpaperCount - 1);
 }
 
 int GetInvalidWallpaperIndex() {
   return kInvalidWallpaperIndex;
 }
 
+WallpaperLayout GetLayoutEnum(const char* layout) {
+  for (int i = 0; i < kWallpaperLayoutCount; i++) {
+    if (strcmp(layout, kWallpaperLayoutArrays[i]) == 0)
+      return static_cast<WallpaperLayout>(i);
+  }
+  // Default to use CENTER layout.
+  return CENTER;
+}
+
 int GetNextWallpaperIndex(int index) {
   DCHECK(kLastRandomWallpaperIndex < kDefaultWallpaperCount);
   return (index + 1) % (kLastRandomWallpaperIndex + 1);
 }
 
 int GetSolidColorIndex() {
   return kSolidColorIndex;
 }
 
 int GetWallpaperCount() {
   return kDefaultWallpaperCount;
 }
 
 const WallpaperInfo& GetWallpaperInfo(int index) {
   DCHECK(index >= 0 && index < kDefaultWallpaperCount);
   return kDefaultWallpapers[index];
 }
 
 }  // namespace ash