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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ash/system/chromeos/network/network_icon.h"
      6 
      7 #include "ash/shell.h"
      8 #include "ash/system/chromeos/network/network_icon_animation.h"
      9 #include "ash/system/chromeos/network/network_icon_animation_observer.h"
     10 #include "ash/system/tray/system_tray_delegate.h"
     11 #include "base/strings/utf_string_conversions.h"
     12 #include "chromeos/network/device_state.h"
     13 #include "chromeos/network/network_connection_handler.h"
     14 #include "chromeos/network/network_state.h"
     15 #include "chromeos/network/network_state_handler.h"
     16 #include "grit/ash_resources.h"
     17 #include "grit/ash_strings.h"
     18 #include "third_party/cros_system_api/dbus/service_constants.h"
     19 #include "ui/base/l10n/l10n_util.h"
     20 #include "ui/base/resource/resource_bundle.h"
     21 #include "ui/base/webui/web_ui_util.h"
     22 #include "ui/gfx/canvas.h"
     23 #include "ui/gfx/image/image_skia_operations.h"
     24 #include "ui/gfx/image/image_skia_source.h"
     25 #include "ui/gfx/rect.h"
     26 #include "ui/gfx/size_conversions.h"
     27 
     28 using chromeos::DeviceState;
     29 using chromeos::NetworkConnectionHandler;
     30 using chromeos::NetworkHandler;
     31 using chromeos::NetworkState;
     32 using chromeos::NetworkStateHandler;
     33 using chromeos::NetworkTypePattern;
     34 
     35 namespace ash {
     36 namespace network_icon {
     37 
     38 namespace {
     39 
     40 //------------------------------------------------------------------------------
     41 // Struct to pass icon badges to NetworkIconImageSource.
     42 struct Badges {
     43   Badges()
     44       : top_left(NULL),
     45         top_right(NULL),
     46         bottom_left(NULL),
     47         bottom_right(NULL) {
     48   }
     49   const gfx::ImageSkia* top_left;
     50   const gfx::ImageSkia* top_right;
     51   const gfx::ImageSkia* bottom_left;
     52   const gfx::ImageSkia* bottom_right;
     53 };
     54 
     55 //------------------------------------------------------------------------------
     56 // class used for maintaining a map of network state and images.
     57 class NetworkIconImpl {
     58  public:
     59   NetworkIconImpl(const std::string& path, IconType icon_type);
     60 
     61   // Determines whether or not the associated network might be dirty and if so
     62   // updates and generates the icon. Does nothing if network no longer exists.
     63   void Update(const chromeos::NetworkState* network);
     64 
     65   // Returns the cached image url for |image_| based on |scale_factor|.
     66   const std::string& GetImageUrl(float scale_factor);
     67 
     68   const gfx::ImageSkia& image() const { return image_; }
     69 
     70  private:
     71   typedef std::map<float, std::string> ImageUrlMap;
     72 
     73   // Updates |strength_index_| for wireless networks. Returns true if changed.
     74   bool UpdateWirelessStrengthIndex(const chromeos::NetworkState* network);
     75 
     76   // Updates the local state for cellular networks. Returns true if changed.
     77   bool UpdateCellularState(const chromeos::NetworkState* network);
     78 
     79   // Updates the portal state for wireless networks. Returns true if changed.
     80   bool UpdatePortalState(const chromeos::NetworkState* network);
     81 
     82   // Updates the VPN badge. Returns true if changed.
     83   bool UpdateVPNBadge();
     84 
     85   // Gets |badges| based on |network| and the current state.
     86   void GetBadges(const NetworkState* network, Badges* badges);
     87 
     88   // Gets the appropriate icon and badges and composites the image.
     89   void GenerateImage(const chromeos::NetworkState* network);
     90 
     91   // Network path, used for debugging.
     92   std::string network_path_;
     93 
     94   // Defines color theme and VPN badging
     95   const IconType icon_type_;
     96 
     97   // Cached state of the network when the icon was last generated.
     98   std::string state_;
     99 
    100   // Cached strength index of the network when the icon was last generated.
    101   int strength_index_;
    102 
    103   // Cached technology badge for the network when the icon was last generated.
    104   const gfx::ImageSkia* technology_badge_;
    105 
    106   // Cached vpn badge for the network when the icon was last generated.
    107   const gfx::ImageSkia* vpn_badge_;
    108 
    109   // Cached roaming state of the network when the icon was last generated.
    110   std::string roaming_state_;
    111 
    112   // Cached portal state of the network when the icon was last generated.
    113   bool behind_captive_portal_;
    114 
    115   // Generated icon image.
    116   gfx::ImageSkia image_;
    117 
    118   // Map of cached image urls by scale factor. Cleared whenever image_ is
    119   // generated.
    120   ImageUrlMap image_urls_;
    121 
    122   DISALLOW_COPY_AND_ASSIGN(NetworkIconImpl);
    123 };
    124 
    125 //------------------------------------------------------------------------------
    126 // Maintain a static (global) icon map. Note: Icons are never destroyed;
    127 // it is assumed that a finite and reasonable number of network icons will be
    128 // created during a session.
    129 
    130 typedef std::map<std::string, NetworkIconImpl*> NetworkIconMap;
    131 
    132 NetworkIconMap* GetIconMapInstance(IconType icon_type, bool create) {
    133   typedef std::map<IconType, NetworkIconMap*> IconTypeMap;
    134   static IconTypeMap* s_icon_map = NULL;
    135   if (s_icon_map == NULL) {
    136     if (!create)
    137       return NULL;
    138     s_icon_map = new IconTypeMap;
    139   }
    140   if (s_icon_map->count(icon_type) == 0) {
    141     if (!create)
    142       return NULL;
    143     (*s_icon_map)[icon_type] = new NetworkIconMap;
    144   }
    145   return (*s_icon_map)[icon_type];
    146 }
    147 
    148 NetworkIconMap* GetIconMap(IconType icon_type) {
    149   return GetIconMapInstance(icon_type, true);
    150 }
    151 
    152 void PurgeIconMap(IconType icon_type,
    153                   const std::set<std::string>& network_paths) {
    154   NetworkIconMap* icon_map = GetIconMapInstance(icon_type, false);
    155   if (!icon_map)
    156     return;
    157   for (NetworkIconMap::iterator loop_iter = icon_map->begin();
    158        loop_iter != icon_map->end(); ) {
    159     NetworkIconMap::iterator cur_iter = loop_iter++;
    160     if (network_paths.count(cur_iter->first) == 0) {
    161       delete cur_iter->second;
    162       icon_map->erase(cur_iter);
    163     }
    164   }
    165 }
    166 
    167 //------------------------------------------------------------------------------
    168 // Utilities for generating icon images.
    169 
    170 // 'NONE' will default to ARCS behavior where appropriate (e.g. no network or
    171 // if a new type gets added).
    172 enum ImageType {
    173   ARCS,
    174   BARS,
    175   NONE
    176 };
    177 
    178 // Amount to fade icons while connecting.
    179 const double kConnectingImageAlpha = 0.5;
    180 
    181 // Images for strength bars for wired networks.
    182 const int kNumBarsImages = 5;
    183 
    184 // Imagaes for strength arcs for wireless networks.
    185 const int kNumArcsImages = 5;
    186 
    187 // Number of discrete images to use for alpha fade animation
    188 const int kNumFadeImages = 10;
    189 
    190 //------------------------------------------------------------------------------
    191 // Classes for generating scaled images.
    192 
    193 const SkBitmap GetEmptyBitmap(const gfx::Size pixel_size) {
    194   typedef std::pair<int, int> SizeKey;
    195   typedef std::map<SizeKey, SkBitmap> SizeBitmapMap;
    196   static SizeBitmapMap* s_empty_bitmaps = new SizeBitmapMap;
    197 
    198   SizeKey key(pixel_size.width(), pixel_size.height());
    199 
    200   SizeBitmapMap::iterator iter = s_empty_bitmaps->find(key);
    201   if (iter != s_empty_bitmaps->end())
    202     return iter->second;
    203 
    204   SkBitmap empty;
    205   empty.setConfig(SkBitmap::kARGB_8888_Config, key.first, key.second);
    206   empty.allocPixels();
    207   empty.eraseARGB(0, 0, 0, 0);
    208   (*s_empty_bitmaps)[key] = empty;
    209   return empty;
    210 }
    211 
    212 class EmptyImageSource: public gfx::ImageSkiaSource {
    213  public:
    214   explicit EmptyImageSource(const gfx::Size& size)
    215       : size_(size) {
    216   }
    217 
    218   virtual gfx::ImageSkiaRep GetImageForScale(float scale) OVERRIDE {
    219     gfx::Size pixel_size = gfx::ToFlooredSize(gfx::ScaleSize(size_, scale));
    220     SkBitmap empty_bitmap = GetEmptyBitmap(pixel_size);
    221     return gfx::ImageSkiaRep(empty_bitmap, scale);
    222   }
    223 
    224  private:
    225   const gfx::Size size_;
    226 
    227   DISALLOW_COPY_AND_ASSIGN(EmptyImageSource);
    228 };
    229 
    230 // This defines how we assemble a network icon.
    231 class NetworkIconImageSource : public gfx::ImageSkiaSource {
    232  public:
    233   NetworkIconImageSource(const gfx::ImageSkia& icon, const Badges& badges)
    234       : icon_(icon),
    235         badges_(badges) {
    236   }
    237   virtual ~NetworkIconImageSource() {}
    238 
    239   // TODO(pkotwicz): Figure out what to do when a new image resolution becomes
    240   // available.
    241   virtual gfx::ImageSkiaRep GetImageForScale(float scale) OVERRIDE {
    242     gfx::ImageSkiaRep icon_rep = icon_.GetRepresentation(scale);
    243     if (icon_rep.is_null())
    244       return gfx::ImageSkiaRep();
    245     gfx::Canvas canvas(icon_rep, false);
    246     if (badges_.top_left)
    247       canvas.DrawImageInt(*badges_.top_left, 0, 0);
    248     if (badges_.top_right)
    249       canvas.DrawImageInt(*badges_.top_right,
    250                           icon_.width() - badges_.top_right->width(), 0);
    251     if (badges_.bottom_left) {
    252       canvas.DrawImageInt(*badges_.bottom_left,
    253                           0, icon_.height() - badges_.bottom_left->height());
    254     }
    255     if (badges_.bottom_right) {
    256       canvas.DrawImageInt(*badges_.bottom_right,
    257                           icon_.width() - badges_.bottom_right->width(),
    258                           icon_.height() - badges_.bottom_right->height());
    259     }
    260     return canvas.ExtractImageRep();
    261   }
    262 
    263  private:
    264   const gfx::ImageSkia icon_;
    265   const Badges badges_;
    266 
    267   DISALLOW_COPY_AND_ASSIGN(NetworkIconImageSource);
    268 };
    269 
    270 //------------------------------------------------------------------------------
    271 // Utilities for extracting icon images.
    272 
    273 // A struct used for caching image urls.
    274 struct ImageIdForNetworkType {
    275   ImageIdForNetworkType(IconType icon_type,
    276                         const std::string& network_type,
    277                         float scale_factor) :
    278       icon_type(icon_type),
    279       network_type(network_type),
    280       scale_factor(scale_factor) {}
    281   bool operator<(const ImageIdForNetworkType& other) const {
    282     if (icon_type != other.icon_type)
    283       return icon_type < other.icon_type;
    284     if (network_type != other.network_type)
    285       return network_type < other.network_type;
    286     return scale_factor < other.scale_factor;
    287   }
    288   IconType icon_type;
    289   std::string network_type;
    290   float scale_factor;
    291 };
    292 
    293 typedef std::map<ImageIdForNetworkType, std::string> ImageIdUrlMap;
    294 
    295 bool IconTypeIsDark(IconType icon_type) {
    296   return (icon_type != ICON_TYPE_TRAY);
    297 }
    298 
    299 bool IconTypeHasVPNBadge(IconType icon_type) {
    300   return (icon_type != ICON_TYPE_LIST);
    301 }
    302 
    303 int NumImagesForType(ImageType type) {
    304   return (type == BARS) ? kNumBarsImages : kNumArcsImages;
    305 }
    306 
    307 gfx::ImageSkia* BaseImageForType(ImageType image_type, IconType icon_type) {
    308   gfx::ImageSkia* image;
    309   if (image_type == BARS) {
    310     image =  ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
    311         IconTypeIsDark(icon_type) ?
    312         IDR_AURA_UBER_TRAY_NETWORK_BARS_DARK :
    313         IDR_AURA_UBER_TRAY_NETWORK_BARS_LIGHT);
    314   } else {
    315     image =  ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
    316         IconTypeIsDark(icon_type) ?
    317         IDR_AURA_UBER_TRAY_NETWORK_ARCS_DARK :
    318         IDR_AURA_UBER_TRAY_NETWORK_ARCS_LIGHT);
    319   }
    320   return image;
    321 }
    322 
    323 ImageType ImageTypeForNetworkType(const std::string& type) {
    324   if (type == shill::kTypeWifi)
    325     return ARCS;
    326   else if (type == shill::kTypeCellular || type == shill::kTypeWimax)
    327     return BARS;
    328   return NONE;
    329 }
    330 
    331 gfx::ImageSkia GetImageForIndex(ImageType image_type,
    332                                 IconType icon_type,
    333                                 int index) {
    334   int num_images = NumImagesForType(image_type);
    335   if (index < 0 || index >= num_images)
    336     return gfx::ImageSkia();
    337   gfx::ImageSkia* images = BaseImageForType(image_type, icon_type);
    338   int width = images->width();
    339   int height = images->height() / num_images;
    340   return gfx::ImageSkiaOperations::ExtractSubset(*images,
    341       gfx::Rect(0, index * height, width, height));
    342 }
    343 
    344 const gfx::ImageSkia GetConnectedImage(IconType icon_type,
    345                                        const std::string& network_type) {
    346   if (network_type == shill::kTypeVPN) {
    347     return *ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
    348         IDR_AURA_UBER_TRAY_NETWORK_VPN);
    349   }
    350   ImageType image_type = ImageTypeForNetworkType(network_type);
    351   const int connected_index = NumImagesForType(image_type) - 1;
    352   return GetImageForIndex(image_type, icon_type, connected_index);
    353 }
    354 
    355 const gfx::ImageSkia GetDisconnectedImage(IconType icon_type,
    356                                           const std::string& network_type) {
    357   if (network_type == shill::kTypeVPN) {
    358     // Note: same as connected image, shouldn't normally be seen.
    359     return *ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
    360         IDR_AURA_UBER_TRAY_NETWORK_VPN);
    361   }
    362   ImageType image_type = ImageTypeForNetworkType(network_type);
    363   const int disconnected_index = 0;
    364   return GetImageForIndex(image_type, icon_type, disconnected_index);
    365 }
    366 
    367 gfx::ImageSkia* ConnectingWirelessImage(ImageType image_type,
    368                                         IconType icon_type,
    369                                         double animation) {
    370   static gfx::ImageSkia* s_bars_images_dark[kNumBarsImages - 1];
    371   static gfx::ImageSkia* s_bars_images_light[kNumBarsImages - 1];
    372   static gfx::ImageSkia* s_arcs_images_dark[kNumArcsImages - 1];
    373   static gfx::ImageSkia* s_arcs_images_light[kNumArcsImages - 1];
    374   int image_count = NumImagesForType(image_type) - 1;
    375   int index = animation * nextafter(static_cast<float>(image_count), 0);
    376   index = std::max(std::min(index, image_count - 1), 0);
    377   gfx::ImageSkia** images;
    378   bool dark = IconTypeIsDark(icon_type);
    379   if (image_type == BARS)
    380     images = dark ? s_bars_images_dark : s_bars_images_light;
    381   else
    382     images = dark ? s_arcs_images_dark : s_arcs_images_light;
    383   if (!images[index]) {
    384     // Lazily cache images.
    385     gfx::ImageSkia source = GetImageForIndex(image_type, icon_type, index + 1);
    386     images[index] = new gfx::ImageSkia(
    387         gfx::ImageSkiaOperations::CreateBlendedImage(
    388             gfx::ImageSkia(new EmptyImageSource(source.size()), source.size()),
    389             source,
    390             kConnectingImageAlpha));
    391   }
    392   return images[index];
    393 }
    394 
    395 gfx::ImageSkia* ConnectingVpnImage(double animation) {
    396   int index = animation * nextafter(static_cast<float>(kNumFadeImages), 0);
    397   static gfx::ImageSkia* s_vpn_images[kNumFadeImages];
    398   if (!s_vpn_images[index]) {
    399     // Lazily cache images.
    400     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
    401     gfx::ImageSkia* icon = rb.GetImageSkiaNamed(IDR_AURA_UBER_TRAY_NETWORK_VPN);
    402     s_vpn_images[index] = new gfx::ImageSkia(
    403         gfx::ImageSkiaOperations::CreateBlendedImage(
    404             gfx::ImageSkia(new EmptyImageSource(icon->size()), icon->size()),
    405             *icon,
    406             animation));
    407   }
    408   return s_vpn_images[index];
    409 }
    410 
    411 gfx::ImageSkia* ConnectingVpnBadge(double animation) {
    412   int index = animation * nextafter(static_cast<float>(kNumFadeImages), 0);
    413   static gfx::ImageSkia* s_vpn_badges[kNumFadeImages];
    414   if (!s_vpn_badges[index]) {
    415     // Lazily cache images.
    416     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
    417     gfx::ImageSkia* icon =
    418         rb.GetImageSkiaNamed(IDR_AURA_UBER_TRAY_NETWORK_WIRED);  // For size
    419     gfx::ImageSkia* badge =
    420         rb.GetImageSkiaNamed(IDR_AURA_UBER_TRAY_NETWORK_VPN_BADGE);
    421     s_vpn_badges[index] = new gfx::ImageSkia(
    422         gfx::ImageSkiaOperations::CreateBlendedImage(
    423             gfx::ImageSkia(new EmptyImageSource(icon->size()), icon->size()),
    424             *badge,
    425             animation));
    426   }
    427   return s_vpn_badges[index];
    428 }
    429 
    430 int StrengthIndex(int strength, int count) {
    431   // Return an index in the range [1, count-1].
    432   const float findex = (static_cast<float>(strength) / 100.0f) *
    433       nextafter(static_cast<float>(count - 1), 0);
    434   int index = 1 + static_cast<int>(findex);
    435   index = std::max(std::min(index, count - 1), 1);
    436   return index;
    437 }
    438 
    439 int GetStrengthIndex(const NetworkState* network) {
    440   ImageType image_type = ImageTypeForNetworkType(network->type());
    441   if (image_type == ARCS)
    442     return StrengthIndex(network->signal_strength(), kNumArcsImages);
    443   else if (image_type == BARS)
    444     return StrengthIndex(network->signal_strength(), kNumBarsImages);
    445   return 0;
    446 }
    447 
    448 const gfx::ImageSkia* BadgeForNetworkTechnology(const NetworkState* network,
    449                                                 IconType icon_type) {
    450   const int kUnknownBadgeType = -1;
    451   int id = kUnknownBadgeType;
    452   const std::string& technology = network->network_technology();
    453   if (technology == shill::kNetworkTechnologyEvdo) {
    454     id = IconTypeIsDark(icon_type) ?
    455         IDR_AURA_UBER_TRAY_NETWORK_EVDO_DARK :
    456         IDR_AURA_UBER_TRAY_NETWORK_EVDO_LIGHT;
    457   } else if (technology == shill::kNetworkTechnology1Xrtt) {
    458     id = IDR_AURA_UBER_TRAY_NETWORK_1X;
    459   } else if (technology == shill::kNetworkTechnologyGprs) {
    460     id = IconTypeIsDark(icon_type) ?
    461         IDR_AURA_UBER_TRAY_NETWORK_GPRS_DARK :
    462         IDR_AURA_UBER_TRAY_NETWORK_GPRS_LIGHT;
    463   } else if (technology == shill::kNetworkTechnologyEdge) {
    464     id = IconTypeIsDark(icon_type) ?
    465         IDR_AURA_UBER_TRAY_NETWORK_EDGE_DARK :
    466         IDR_AURA_UBER_TRAY_NETWORK_EDGE_LIGHT;
    467   } else if (technology == shill::kNetworkTechnologyUmts) {
    468     id = IconTypeIsDark(icon_type) ?
    469         IDR_AURA_UBER_TRAY_NETWORK_3G_DARK :
    470         IDR_AURA_UBER_TRAY_NETWORK_3G_LIGHT;
    471   } else if (technology == shill::kNetworkTechnologyHspa) {
    472     id = IconTypeIsDark(icon_type) ?
    473         IDR_AURA_UBER_TRAY_NETWORK_HSPA_DARK :
    474         IDR_AURA_UBER_TRAY_NETWORK_HSPA_LIGHT;
    475   } else if (technology == shill::kNetworkTechnologyHspaPlus) {
    476     id = IconTypeIsDark(icon_type) ?
    477         IDR_AURA_UBER_TRAY_NETWORK_HSPA_PLUS_DARK :
    478         IDR_AURA_UBER_TRAY_NETWORK_HSPA_PLUS_LIGHT;
    479   } else if (technology == shill::kNetworkTechnologyLte) {
    480     id = IconTypeIsDark(icon_type) ?
    481         IDR_AURA_UBER_TRAY_NETWORK_LTE_DARK :
    482         IDR_AURA_UBER_TRAY_NETWORK_LTE_LIGHT;
    483   } else if (technology == shill::kNetworkTechnologyLteAdvanced) {
    484     id = IconTypeIsDark(icon_type) ?
    485         IDR_AURA_UBER_TRAY_NETWORK_LTE_ADVANCED_DARK :
    486         IDR_AURA_UBER_TRAY_NETWORK_LTE_ADVANCED_LIGHT;
    487   } else if (technology == shill::kNetworkTechnologyGsm) {
    488     id = IconTypeIsDark(icon_type) ?
    489         IDR_AURA_UBER_TRAY_NETWORK_GPRS_DARK :
    490         IDR_AURA_UBER_TRAY_NETWORK_GPRS_LIGHT;
    491   }
    492   if (id == kUnknownBadgeType)
    493     return NULL;
    494   else
    495     return ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(id);
    496 }
    497 
    498 const gfx::ImageSkia* BadgeForVPN(IconType icon_type) {
    499   return ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
    500       IDR_AURA_UBER_TRAY_NETWORK_VPN_BADGE);
    501 }
    502 
    503 gfx::ImageSkia GetIcon(const NetworkState* network,
    504                        IconType icon_type,
    505                        int strength_index) {
    506   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
    507   if (network->Matches(NetworkTypePattern::Ethernet())) {
    508     return *rb.GetImageSkiaNamed(IDR_AURA_UBER_TRAY_NETWORK_WIRED);
    509   } else if (network->Matches(NetworkTypePattern::Wireless())) {
    510     DCHECK(strength_index > 0);
    511     return GetImageForIndex(
    512         ImageTypeForNetworkType(network->type()), icon_type, strength_index);
    513   } else if (network->Matches(NetworkTypePattern::VPN())) {
    514     return *rb.GetImageSkiaNamed(IDR_AURA_UBER_TRAY_NETWORK_VPN);
    515   } else {
    516     LOG(WARNING) << "Request for icon for unsupported type: "
    517                  << network->type();
    518     return *rb.GetImageSkiaNamed(IDR_AURA_UBER_TRAY_NETWORK_WIRED);
    519   }
    520 }
    521 
    522 //------------------------------------------------------------------------------
    523 // Get connecting images
    524 
    525 gfx::ImageSkia GetConnectingVpnImage(IconType icon_type) {
    526   NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
    527   const NetworkState* connected_network = NULL;
    528   if (icon_type == ICON_TYPE_TRAY) {
    529     connected_network =
    530         handler->ConnectedNetworkByType(NetworkTypePattern::NonVirtual());
    531   }
    532   double animation = NetworkIconAnimation::GetInstance()->GetAnimation();
    533 
    534   if (connected_network) {
    535     gfx::ImageSkia icon = GetImageForNetwork(connected_network, icon_type);
    536     Badges badges;
    537     badges.bottom_left = ConnectingVpnBadge(animation);
    538     return gfx::ImageSkia(
    539         new NetworkIconImageSource(icon, badges), icon.size());
    540   } else {
    541     gfx::ImageSkia* icon = ConnectingVpnImage(animation);
    542     return gfx::ImageSkia(
    543         new NetworkIconImageSource(*icon, Badges()), icon->size());
    544   }
    545 }
    546 
    547 gfx::ImageSkia GetConnectingImage(IconType icon_type,
    548                                   const std::string& network_type) {
    549   if (network_type == shill::kTypeVPN)
    550     return GetConnectingVpnImage(icon_type);
    551 
    552   ImageType image_type = ImageTypeForNetworkType(network_type);
    553   double animation = NetworkIconAnimation::GetInstance()->GetAnimation();
    554 
    555   gfx::ImageSkia* icon = ConnectingWirelessImage(
    556       image_type, icon_type, animation);
    557   return gfx::ImageSkia(
    558       new NetworkIconImageSource(*icon, Badges()), icon->size());
    559 }
    560 
    561 std::string GetConnectingImageUrl(IconType icon_type,
    562                                   const std::string& network_type,
    563                                   float scale_factor) {
    564   // Caching the connecting image is complicated and we will never draw more
    565   // than a few per frame, so just generate the image url each time.
    566   gfx::ImageSkia image = GetConnectingImage(icon_type, network_type);
    567   gfx::ImageSkiaRep image_rep = image.GetRepresentation(scale_factor);
    568   return webui::GetBitmapDataUrl(image_rep.sk_bitmap());
    569 }
    570 
    571 }  // namespace
    572 
    573 //------------------------------------------------------------------------------
    574 // NetworkIconImpl
    575 
    576 NetworkIconImpl::NetworkIconImpl(const std::string& path, IconType icon_type)
    577     : network_path_(path),
    578       icon_type_(icon_type),
    579       strength_index_(-1),
    580       technology_badge_(NULL),
    581       vpn_badge_(NULL),
    582       behind_captive_portal_(false) {
    583   // Default image
    584   image_ = GetDisconnectedImage(icon_type, shill::kTypeWifi);
    585 }
    586 
    587 void NetworkIconImpl::Update(const NetworkState* network) {
    588   DCHECK(network);
    589   // Determine whether or not we need to update the icon.
    590   bool dirty = image_.isNull();
    591 
    592   // If the network state has changed, the icon needs updating.
    593   if (state_ != network->connection_state()) {
    594     state_ = network->connection_state();
    595     dirty = true;
    596   }
    597 
    598   dirty |= UpdatePortalState(network);
    599 
    600   if (network->Matches(NetworkTypePattern::Wireless())) {
    601     dirty |= UpdateWirelessStrengthIndex(network);
    602   }
    603 
    604   if (network->Matches(NetworkTypePattern::Cellular()))
    605     dirty |= UpdateCellularState(network);
    606 
    607   if (IconTypeHasVPNBadge(icon_type_) &&
    608       network->Matches(NetworkTypePattern::NonVirtual())) {
    609     dirty |= UpdateVPNBadge();
    610   }
    611 
    612   if (dirty) {
    613     // Set the icon and badges based on the network and generate the image.
    614     GenerateImage(network);
    615   }
    616 }
    617 
    618 bool NetworkIconImpl::UpdateWirelessStrengthIndex(const NetworkState* network) {
    619   int index = GetStrengthIndex(network);
    620   if (index != strength_index_) {
    621     strength_index_ = index;
    622     return true;
    623   }
    624   return false;
    625 }
    626 
    627 bool NetworkIconImpl::UpdateCellularState(const NetworkState* network) {
    628   bool dirty = false;
    629   const gfx::ImageSkia* technology_badge =
    630       BadgeForNetworkTechnology(network, icon_type_);
    631   if (technology_badge != technology_badge_) {
    632     technology_badge_ = technology_badge;
    633     dirty = true;
    634   }
    635   std::string roaming_state = network->roaming();
    636   if (roaming_state != roaming_state_) {
    637     roaming_state_ = roaming_state;
    638     dirty = true;
    639   }
    640   return dirty;
    641 }
    642 
    643 bool NetworkIconImpl::UpdatePortalState(const NetworkState* network) {
    644   bool behind_captive_portal = false;
    645   if (network) {
    646     SystemTrayDelegate* delegate = Shell::GetInstance()->system_tray_delegate();
    647     behind_captive_portal =
    648         delegate->IsNetworkBehindCaptivePortal(network->path());
    649   }
    650 
    651   if (behind_captive_portal == behind_captive_portal_)
    652     return false;
    653   behind_captive_portal_ = behind_captive_portal;
    654   return true;
    655 }
    656 
    657 bool NetworkIconImpl::UpdateVPNBadge() {
    658   const NetworkState* vpn = NetworkHandler::Get()->network_state_handler()->
    659       ConnectedNetworkByType(NetworkTypePattern::VPN());
    660   if (vpn && vpn_badge_ == NULL) {
    661     vpn_badge_ = BadgeForVPN(icon_type_);
    662     return true;
    663   } else if (!vpn && vpn_badge_ != NULL) {
    664     vpn_badge_ = NULL;
    665     return true;
    666   }
    667   return false;
    668 }
    669 
    670 void NetworkIconImpl::GetBadges(const NetworkState* network, Badges* badges) {
    671   DCHECK(network);
    672   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
    673   NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
    674 
    675   const std::string& type = network->type();
    676   if (type == shill::kTypeWifi) {
    677     if (network->security() != shill::kSecurityNone &&
    678         IconTypeIsDark(icon_type_)) {
    679       badges->bottom_right = rb.GetImageSkiaNamed(
    680           IDR_AURA_UBER_TRAY_NETWORK_SECURE_DARK);
    681     }
    682   } else if (type == shill::kTypeWimax) {
    683     technology_badge_ = rb.GetImageSkiaNamed(
    684         IconTypeIsDark(icon_type_) ?
    685         IDR_AURA_UBER_TRAY_NETWORK_4G_DARK :
    686         IDR_AURA_UBER_TRAY_NETWORK_4G_LIGHT);
    687   } else if (type == shill::kTypeCellular) {
    688     if (network->roaming() == shill::kRoamingStateRoaming) {
    689       // For networks that are always in roaming don't show roaming badge.
    690       const DeviceState* device =
    691           handler->GetDeviceState(network->device_path());
    692       LOG_IF(WARNING, !device) << "Could not find device state for "
    693                                << network->device_path();
    694       if (!device || !device->provider_requires_roaming()) {
    695         badges->bottom_right = rb.GetImageSkiaNamed(
    696             IconTypeIsDark(icon_type_) ?
    697             IDR_AURA_UBER_TRAY_NETWORK_ROAMING_DARK :
    698             IDR_AURA_UBER_TRAY_NETWORK_ROAMING_LIGHT);
    699       }
    700     }
    701   }
    702   if (!network->IsConnectingState()) {
    703     badges->top_left = technology_badge_;
    704     badges->bottom_left = vpn_badge_;
    705   }
    706 
    707   if (behind_captive_portal_) {
    708     gfx::ImageSkia* badge = rb.GetImageSkiaNamed(
    709        IconTypeIsDark(icon_type_) ?
    710        IDR_AURA_UBER_TRAY_NETWORK_PORTAL_DARK :
    711        IDR_AURA_UBER_TRAY_NETWORK_PORTAL_LIGHT);
    712     badges->bottom_right = badge;
    713   }
    714 }
    715 
    716 void NetworkIconImpl::GenerateImage(const NetworkState* network) {
    717   DCHECK(network);
    718   gfx::ImageSkia icon = GetIcon(network, icon_type_, strength_index_);
    719   Badges badges;
    720   GetBadges(network, &badges);
    721   image_ = gfx::ImageSkia(
    722       new NetworkIconImageSource(icon, badges), icon.size());
    723   image_urls_.clear();
    724 }
    725 
    726 const std::string& NetworkIconImpl::GetImageUrl(float scale_factor) {
    727   ImageUrlMap::iterator iter = image_urls_.find(scale_factor);
    728   if (iter != image_urls_.end())
    729     return iter->second;
    730 
    731   VLOG(2) << "Generating bitmap URL for: " << network_path_;
    732   gfx::ImageSkiaRep image_rep = image_.GetRepresentation(scale_factor);
    733   iter = image_urls_.insert(std::make_pair(
    734       scale_factor, webui::GetBitmapDataUrl(image_rep.sk_bitmap()))).first;
    735   return iter->second;
    736 }
    737 
    738 namespace {
    739 
    740 NetworkIconImpl* FindAndUpdateImageImpl(const NetworkState* network,
    741                                         IconType icon_type) {
    742   // Find or add the icon.
    743   NetworkIconMap* icon_map = GetIconMap(icon_type);
    744   NetworkIconImpl* icon;
    745   NetworkIconMap::iterator iter = icon_map->find(network->path());
    746   if (iter == icon_map->end()) {
    747     icon = new NetworkIconImpl(network->path(), icon_type);
    748     icon_map->insert(std::make_pair(network->path(), icon));
    749   } else {
    750     icon = iter->second;
    751   }
    752 
    753   // Update and return the icon's image.
    754   icon->Update(network);
    755   return icon;
    756 }
    757 
    758 }  // namespace
    759 
    760 //------------------------------------------------------------------------------
    761 // Public interface
    762 
    763 gfx::ImageSkia GetImageForNetwork(const NetworkState* network,
    764                                   IconType icon_type) {
    765   DCHECK(network);
    766   if (!network->visible())
    767     return GetDisconnectedImage(icon_type, network->type());
    768 
    769   if (network->IsConnectingState())
    770     return GetConnectingImage(icon_type, network->type());
    771 
    772   NetworkIconImpl* icon = FindAndUpdateImageImpl(network, icon_type);
    773   return icon->image();
    774 }
    775 
    776 std::string GetImageUrlForNetwork(const NetworkState* network,
    777                                   IconType icon_type,
    778                                   float scale_factor) {
    779   DCHECK(network);
    780   // Handle connecting icons.
    781   if (network->IsConnectingState())
    782     return GetConnectingImageUrl(icon_type, network->type(), scale_factor);
    783 
    784   NetworkIconImpl* icon = FindAndUpdateImageImpl(network, icon_type);
    785   return icon->GetImageUrl(scale_factor);
    786 }
    787 
    788 gfx::ImageSkia GetImageForConnectedNetwork(IconType icon_type,
    789                                            const std::string& network_type) {
    790   return GetConnectedImage(icon_type, network_type);
    791 }
    792 
    793 gfx::ImageSkia GetImageForConnectingNetwork(IconType icon_type,
    794                                             const std::string& network_type) {
    795   return GetConnectingImage(icon_type, network_type);
    796 }
    797 
    798 gfx::ImageSkia GetImageForDisconnectedNetwork(IconType icon_type,
    799                                               const std::string& network_type) {
    800   return GetDisconnectedImage(icon_type, network_type);
    801 }
    802 
    803 base::string16 GetLabelForNetwork(const chromeos::NetworkState* network,
    804                                   IconType icon_type) {
    805   DCHECK(network);
    806   std::string activation_state = network->activation_state();
    807   if (icon_type == ICON_TYPE_LIST) {
    808     // Show "<network>: [Connecting|Activating]..."
    809     if (network->IsConnectingState()) {
    810       return l10n_util::GetStringFUTF16(
    811           IDS_ASH_STATUS_TRAY_NETWORK_LIST_CONNECTING,
    812           base::UTF8ToUTF16(network->name()));
    813     }
    814     if (activation_state == shill::kActivationStateActivating) {
    815       return l10n_util::GetStringFUTF16(
    816           IDS_ASH_STATUS_TRAY_NETWORK_LIST_ACTIVATING,
    817           base::UTF8ToUTF16(network->name()));
    818     }
    819     // Show "Activate <network>" in list view only.
    820     if (activation_state == shill::kActivationStateNotActivated ||
    821         activation_state == shill::kActivationStatePartiallyActivated) {
    822       return l10n_util::GetStringFUTF16(
    823           IDS_ASH_STATUS_TRAY_NETWORK_LIST_ACTIVATE,
    824           base::UTF8ToUTF16(network->name()));
    825     }
    826   } else {
    827     // Show "[Connected to|Connecting to|Activating] <network>" (non-list view).
    828     if (network->IsConnectedState()) {
    829       return l10n_util::GetStringFUTF16(IDS_ASH_STATUS_TRAY_NETWORK_CONNECTED,
    830                                         base::UTF8ToUTF16(network->name()));
    831     }
    832     if (network->IsConnectingState()) {
    833       return l10n_util::GetStringFUTF16(IDS_ASH_STATUS_TRAY_NETWORK_CONNECTING,
    834                                         base::UTF8ToUTF16(network->name()));
    835     }
    836     if (activation_state == shill::kActivationStateActivating) {
    837       return l10n_util::GetStringFUTF16(IDS_ASH_STATUS_TRAY_NETWORK_ACTIVATING,
    838                                         base::UTF8ToUTF16(network->name()));
    839     }
    840   }
    841 
    842   // Otherwise just show the network name or 'Ethernet'.
    843   if (network->Matches(NetworkTypePattern::Ethernet())) {
    844     return l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_ETHERNET);
    845   } else {
    846     return base::UTF8ToUTF16(network->name());
    847   }
    848 }
    849 
    850 int GetCellularUninitializedMsg() {
    851   static base::Time s_uninitialized_state_time;
    852   static int s_uninitialized_msg(0);
    853 
    854   NetworkStateHandler* handler = NetworkHandler::Get()->network_state_handler();
    855   if (handler->GetTechnologyState(NetworkTypePattern::Mobile())
    856       == NetworkStateHandler::TECHNOLOGY_UNINITIALIZED) {
    857     s_uninitialized_msg = IDS_ASH_STATUS_TRAY_INITIALIZING_CELLULAR;
    858     s_uninitialized_state_time = base::Time::Now();
    859     return s_uninitialized_msg;
    860   } else if (handler->GetScanningByType(NetworkTypePattern::Mobile())) {
    861     s_uninitialized_msg = IDS_ASH_STATUS_TRAY_CELLULAR_SCANNING;
    862     s_uninitialized_state_time = base::Time::Now();
    863     return s_uninitialized_msg;
    864   }
    865   // There can be a delay between leaving the Initializing state and when
    866   // a Cellular device shows up, so keep showing the initializing
    867   // animation for a bit to avoid flashing the disconnect icon.
    868   const int kInitializingDelaySeconds = 1;
    869   base::TimeDelta dtime = base::Time::Now() - s_uninitialized_state_time;
    870   if (dtime.InSeconds() < kInitializingDelaySeconds)
    871     return s_uninitialized_msg;
    872   return 0;
    873 }
    874 
    875 void GetDefaultNetworkImageAndLabel(IconType icon_type,
    876                                     gfx::ImageSkia* image,
    877                                     base::string16* label,
    878                                     bool* animating) {
    879   NetworkStateHandler* state_handler =
    880       NetworkHandler::Get()->network_state_handler();
    881   NetworkConnectionHandler* connect_handler =
    882       NetworkHandler::Get()->network_connection_handler();
    883   const NetworkState* connected_network =
    884       state_handler->ConnectedNetworkByType(NetworkTypePattern::NonVirtual());
    885   const NetworkState* connecting_network =
    886       state_handler->ConnectingNetworkByType(NetworkTypePattern::Wireless());
    887   if (!connecting_network && icon_type == ICON_TYPE_TRAY) {
    888     connecting_network =
    889         state_handler->ConnectingNetworkByType(NetworkTypePattern::VPN());
    890   }
    891 
    892   const NetworkState* network;
    893   // If we are connecting to a network, and there is either no connected
    894   // network, or the connection was user requested, use the connecting
    895   // network.
    896   if (connecting_network &&
    897       (!connected_network ||
    898        connect_handler->HasConnectingNetwork(connecting_network->path()))) {
    899     network = connecting_network;
    900   } else {
    901     network = connected_network;
    902   }
    903 
    904   // Don't show ethernet in the tray
    905   if (icon_type == ICON_TYPE_TRAY && network &&
    906       network->Matches(NetworkTypePattern::Ethernet())) {
    907     *image = gfx::ImageSkia();
    908     *animating = false;
    909     return;
    910   }
    911 
    912   if (!network) {
    913     // If no connecting network, check if we are activating a network.
    914     const NetworkState* mobile_network =
    915         state_handler->FirstNetworkByType(NetworkTypePattern::Mobile());
    916     if (mobile_network && (mobile_network->activation_state() ==
    917                            shill::kActivationStateActivating)) {
    918       network = mobile_network;
    919     }
    920   }
    921   if (!network) {
    922     // If no connecting network, check for cellular initializing.
    923     int uninitialized_msg = GetCellularUninitializedMsg();
    924     if (uninitialized_msg != 0) {
    925       *image = GetImageForConnectingNetwork(icon_type, shill::kTypeCellular);
    926       if (label)
    927         *label = l10n_util::GetStringUTF16(uninitialized_msg);
    928       *animating = true;
    929     } else {
    930       // Otherwise show the disconnected wifi icon.
    931       *image = GetImageForDisconnectedNetwork(icon_type, shill::kTypeWifi);
    932       if (label) {
    933         *label = l10n_util::GetStringUTF16(
    934             IDS_ASH_STATUS_TRAY_NETWORK_NOT_CONNECTED);
    935       }
    936       *animating = false;
    937     }
    938     return;
    939   }
    940   *animating = network->IsConnectingState();
    941   // Get icon and label for connected or connecting network.
    942   *image = GetImageForNetwork(network, icon_type);
    943   if (label)
    944     *label = GetLabelForNetwork(network, icon_type);
    945 }
    946 
    947 void PurgeNetworkIconCache() {
    948   NetworkStateHandler::NetworkStateList networks;
    949   NetworkHandler::Get()->network_state_handler()->GetVisibleNetworkList(
    950       &networks);
    951   std::set<std::string> network_paths;
    952   for (NetworkStateHandler::NetworkStateList::iterator iter = networks.begin();
    953        iter != networks.end(); ++iter) {
    954     network_paths.insert((*iter)->path());
    955   }
    956   PurgeIconMap(ICON_TYPE_TRAY, network_paths);
    957   PurgeIconMap(ICON_TYPE_DEFAULT_VIEW, network_paths);
    958   PurgeIconMap(ICON_TYPE_LIST, network_paths);
    959 }
    960 
    961 }  // namespace network_icon
    962 }  // namespace ash
    963