chrome/browser/android/large_icon_bridge.cc

   1 // Copyright 2015 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/large_icon_bridge.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/utf_string_conversions.h"
  14 #include "chrome/browser/favicon/large_icon_service_factory.h"
  15 #include "chrome/browser/profiles/profile.h"
  16 #include "chrome/browser/profiles/profile_android.h"
  17 #include "components/favicon/core/large_icon_service.h"
  18 #include "components/favicon_base/fallback_icon_style.h"
  19 #include "components/favicon_base/favicon_types.h"
  20 #include "jni/LargeIconBridge_jni.h"
  21 #include "third_party/skia/include/core/SkBitmap.h"
  22 #include "ui/gfx/android/java_bitmap.h"
  23 #include "ui/gfx/codec/png_codec.h"
  24
  25 using base::android::ScopedJavaGlobalRef;
  26 using base::android::ScopedJavaLocalRef;
  27 using base::android::AttachCurrentThread;
  28 using base::android::ConvertJavaStringToUTF16;
  29
  30 namespace {
  31
  32 const SkColor kDefaultBackgroundColor = SkColorSetRGB(0x78, 0x78, 0x78);
  33
  34 void OnLargeIconAvailable(
  35     ScopedJavaGlobalRef<jobject>* j_callback,
  36     const favicon_base::LargeIconResult& result) {
  37   JNIEnv* env = AttachCurrentThread();
  38
  39   // Convert the result to a Java Bitmap.
  40   SkBitmap bitmap;
  41   ScopedJavaLocalRef<jobject> j_bitmap;
  42   if (result.bitmap.is_valid()) {
  43     gfx::PNGCodec::Decode(result.bitmap.bitmap_data->front(),
  44                           result.bitmap.bitmap_data->size(),
  45                           &bitmap);
  46     if (!bitmap.isNull())
  47       j_bitmap = gfx::ConvertToJavaBitmap(&bitmap);
  48   }
  49
  50   jint background_color = kDefaultBackgroundColor;
  51   if (result.fallback_icon_style)
  52     background_color = result.fallback_icon_style->background_color;
  53
  54   Java_LargeIconCallback_onLargeIconAvailable(env,
  55                                               j_callback->obj(),
  56                                               j_bitmap.obj(),
  57                                               background_color);
  58 }
  59
  60 }  // namespace
  61
  62 static jlong Init(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
  63   return reinterpret_cast<intptr_t>(new LargeIconBridge());
  64 }
  65
  66 LargeIconBridge::LargeIconBridge() {
  67 }
  68
  69 LargeIconBridge::~LargeIconBridge() {
  70 }
  71
  72 void LargeIconBridge::Destroy(JNIEnv* env, jobject obj) {
  73   delete this;
  74 }
  75
  76 jboolean LargeIconBridge::GetLargeIconForURL(
  77     JNIEnv* env,
  78     jobject obj,
  79     jobject j_profile,
  80     jstring j_page_url,
  81     jint min_source_size_px,
  82     jobject j_callback) {
  83   Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile);
  84   if (!profile)
  85     return false;
  86
  87   favicon::LargeIconService* large_icon_service =
  88       LargeIconServiceFactory::GetForBrowserContext(profile);
  89   if (!large_icon_service)
  90     return false;
  91
  92   ScopedJavaGlobalRef<jobject>* j_global_callback =
  93       new ScopedJavaGlobalRef<jobject>();
  94   j_global_callback->Reset(env, j_callback);
  95
  96   favicon_base::LargeIconCallback callback_runner =
  97       base::Bind(&OnLargeIconAvailable, base::Owned(j_global_callback));
  98
  99   large_icon_service->GetLargeIconOrFallbackStyle(
 100       GURL(ConvertJavaStringToUTF16(env, j_page_url)),
 101       min_source_size_px,
 102       0,  // Do not resize.
 103       callback_runner,
 104       &cancelable_task_tracker_);
 105
 106   return true;
 107 }
 108
 109 // static
 110 bool LargeIconBridge::RegisterLargeIconBridge(JNIEnv* env) {
 111   return RegisterNativesImpl(env);
 112 }