src/chrome/browser/android/favicon_helper.cc

   1 // Copyright 2013 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 "chrome/browser/android/favicon_helper.h"
   6
   7 #include <jni.h>
   8
   9 #include "base/android/jni_android.h"
  10 #include "base/android/jni_string.h"
  11 #include "base/android/scoped_java_ref.h"
  12 #include "base/bind.h"
  13 #include "base/strings/string_util.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "chrome/browser/favicon/favicon_service.h"
  16 #include "chrome/browser/favicon/favicon_service_factory.h"
  17 #include "chrome/browser/profiles/profile.h"
  18 #include "chrome/browser/profiles/profile_android.h"
  19 #include "chrome/browser/sync/open_tabs_ui_delegate.h"
  20 #include "chrome/browser/sync/profile_sync_service.h"
  21 #include "chrome/browser/sync/profile_sync_service_factory.h"
  22 #include "chrome/browser/sync/profile_sync_service_factory.h"
  23 #include "jni/FaviconHelper_jni.h"
  24 #include "third_party/skia/include/core/SkBitmap.h"
  25 #include "ui/gfx/android/java_bitmap.h"
  26 #include "ui/gfx/color_analysis.h"
  27 #include "ui/gfx/color_utils.h"
  28
  29 using base::android::ScopedJavaGlobalRef;
  30 using base::android::ScopedJavaLocalRef;
  31 using base::android::AttachCurrentThread;
  32 using base::android::ConvertJavaStringToUTF16;
  33 using base::android::ConvertJavaStringToUTF8;
  34 using base::android::ConvertUTF8ToJavaString;
  35
  36 namespace {
  37
  38 void OnLocalFaviconAvailable(
  39     ScopedJavaGlobalRef<jobject>* j_favicon_image_callback,
  40     const chrome::FaviconImageResult& favicon_image_result) {
  41   JNIEnv* env = AttachCurrentThread();
  42
  43   // Convert favicon_image_result to java objects.
  44   ScopedJavaLocalRef<jstring> j_icon_url =
  45       ConvertUTF8ToJavaString(env, favicon_image_result.icon_url.spec());
  46   SkBitmap favicon_bitmap = favicon_image_result.image.AsBitmap();
  47   ScopedJavaLocalRef<jobject> j_favicon_bitmap;
  48   if (!favicon_bitmap.isNull())
  49     j_favicon_bitmap = gfx::ConvertToJavaBitmap(&favicon_bitmap);
  50
  51   // Call java side OnLocalFaviconAvailable method.
  52   Java_FaviconImageCallback_onFaviconAvailable(env,
  53                                                j_favicon_image_callback->obj(),
  54                                                j_favicon_bitmap.obj(),
  55                                                j_icon_url.obj());
  56 }
  57
  58 }  // namespace
  59
  60 static jlong Init(JNIEnv* env, jclass clazz) {
  61   return reinterpret_cast<intptr_t>(new FaviconHelper());
  62 }
  63
  64 FaviconHelper::FaviconHelper() {
  65   cancelable_task_tracker_.reset(new base::CancelableTaskTracker());
  66 }
  67
  68 void FaviconHelper::Destroy(JNIEnv* env, jobject obj) {
  69   delete this;
  70 }
  71
  72 jboolean FaviconHelper::GetLocalFaviconImageForURL(
  73     JNIEnv* env,
  74     jobject obj,
  75     jobject j_profile,
  76     jstring j_page_url,
  77     jint j_icon_types,
  78     jint j_desired_size_in_dip,
  79     jobject j_favicon_image_callback) {
  80   Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile);
  81   DCHECK(profile);
  82   if (!profile)
  83     return false;
  84
  85   FaviconService* favicon_service = FaviconServiceFactory::GetForProfile(
  86       profile, Profile::EXPLICIT_ACCESS);
  87   DCHECK(favicon_service);
  88   if (!favicon_service)
  89     return false;
  90
  91   FaviconService::FaviconForURLParams params(
  92       GURL(ConvertJavaStringToUTF16(env, j_page_url)),
  93       static_cast<int>(j_icon_types),
  94       static_cast<int>(j_desired_size_in_dip));
  95
  96   ScopedJavaGlobalRef<jobject>* j_scoped_favicon_callback =
  97       new ScopedJavaGlobalRef<jobject>();
  98   j_scoped_favicon_callback->Reset(env, j_favicon_image_callback);
  99
 100   FaviconService::FaviconImageCallback callback_runner = base::Bind(
 101       &OnLocalFaviconAvailable, base::Owned(j_scoped_favicon_callback));
 102
 103   favicon_service->GetFaviconImageForURL(
 104       params, callback_runner,
 105       cancelable_task_tracker_.get());
 106
 107   return true;
 108 }
 109
 110 ScopedJavaLocalRef<jobject> FaviconHelper::GetSyncedFaviconImageForURL(
 111     JNIEnv* env,
 112     jobject obj,
 113     jobject jprofile,
 114     jstring j_page_url) {
 115   Profile* profile = ProfileAndroid::FromProfileAndroid(jprofile);
 116   DCHECK(profile);
 117
 118   std::string page_url = ConvertJavaStringToUTF8(env, j_page_url);
 119
 120   ProfileSyncService* sync_service =
 121       ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile);
 122   DCHECK(sync_service);
 123
 124   scoped_refptr<base::RefCountedMemory> favicon_png;
 125   browser_sync::OpenTabsUIDelegate* open_tabs =
 126       sync_service->GetOpenTabsUIDelegate();
 127   DCHECK(open_tabs);
 128
 129   if (!open_tabs->GetSyncedFaviconForPageURL(page_url, &favicon_png))
 130     return ScopedJavaLocalRef<jobject>();
 131
 132     // Convert favicon_image_result to java objects.
 133   gfx::Image favicon_image = gfx::Image::CreateFrom1xPNGBytes(favicon_png);
 134   SkBitmap favicon_bitmap = favicon_image.AsBitmap();
 135
 136   ScopedJavaLocalRef<jobject> j_favicon_bitmap;
 137   if (favicon_bitmap.isNull())
 138     return ScopedJavaLocalRef<jobject>();
 139
 140   return gfx::ConvertToJavaBitmap(&favicon_bitmap);
 141 }
 142
 143 jint FaviconHelper::GetDominantColorForBitmap(JNIEnv* env,
 144                                               jobject obj,
 145                                               jobject bitmap) {
 146   if (!bitmap)
 147     return 0;
 148
 149   gfx::JavaBitmap bitmap_lock(bitmap);
 150   SkBitmap skbitmap = gfx::CreateSkBitmapFromJavaBitmap(bitmap_lock);
 151   skbitmap.setImmutable();
 152   scoped_refptr<base::RefCountedMemory> png_data =
 153       gfx::Image::CreateFrom1xBitmap(skbitmap).As1xPNGBytes();
 154   uint32_t max_brightness = 665;
 155   uint32_t min_darkness = 100;
 156   color_utils::GridSampler sampler;
 157   return color_utils::CalculateKMeanColorOfPNG(
 158       png_data, min_darkness, max_brightness, &sampler);
 159 }
 160
 161 FaviconHelper::~FaviconHelper() {}
 162
 163 // static
 164 bool FaviconHelper::RegisterFaviconHelper(JNIEnv* env) {
 165   return RegisterNativesImpl(env);
 166 }