chrome/browser/android/tab/thumbnail_tab_helper_android.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/tab/thumbnail_tab_helper_android.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "base/android/jni_string.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "chrome/browser/history/top_sites_factory.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "chrome/browser/profiles/profile_android.h"
  13 #include "chrome/browser/thumbnails/thumbnail_service.h"
  14 #include "chrome/browser/thumbnails/thumbnail_service_factory.h"
  15 #include "chrome/browser/thumbnails/thumbnail_tab_helper.h"
  16 #include "components/history/core/browser/top_sites.h"
  17 #include "content/public/browser/web_contents.h"
  18 #include "jni/ThumbnailTabHelper_jni.h"
  19 #include "third_party/skia/include/core/SkBitmap.h"
  20 #include "ui/gfx/android/java_bitmap.h"
  21 #include "ui/gfx/color_utils.h"
  22 #include "ui/gfx/image/image_skia.h"
  23 #include "url/gurl.h"
  24
  25 // static
  26 bool RegisterThumbnailTabHelperAndroid(JNIEnv* env) {
  27   return RegisterNativesImpl(env);
  28 }
  29
  30 static void InitThumbnailHelper(JNIEnv* env,
  31                                 jclass clazz,
  32                                 jobject jweb_contents) {
  33   content::WebContents* web_contents =
  34       content::WebContents::FromJavaWebContents(jweb_contents);
  35   DCHECK(web_contents);
  36
  37   // Don't allow ThumbnailTabHelper to take thumbnail snapshots.
  38   // Currently the process is driven from Tab, but long term will
  39   // move into a Android specific tab helper.
  40   // Bug: crbug.com/157431
  41   ThumbnailTabHelper* thumbnail_tab_helper =
  42       ThumbnailTabHelper::FromWebContents(web_contents);
  43   if (thumbnail_tab_helper)
  44     thumbnail_tab_helper->set_enabled(false);
  45 }
  46
  47 static jboolean ShouldUpdateThumbnail(
  48     JNIEnv* env, jclass clazz, jobject jprofile, jstring jurl) {
  49   Profile* profile = ProfileAndroid::FromProfileAndroid(jprofile);
  50
  51   GURL url(base::android::ConvertJavaStringToUTF8(env, jurl));
  52   scoped_refptr<thumbnails::ThumbnailService> thumbnail_service =
  53       ThumbnailServiceFactory::GetForProfile(profile);
  54   return (thumbnail_service.get() != NULL &&
  55           thumbnail_service->ShouldAcquirePageThumbnail(url));
  56 }
  57
  58 static void UpdateThumbnail(JNIEnv* env,
  59                             jclass clazz,
  60                             jobject jweb_contents,
  61                             jobject bitmap,
  62                             jboolean jat_top) {
  63   content::WebContents* web_contents =
  64       content::WebContents::FromJavaWebContents(jweb_contents);
  65   DCHECK(web_contents);
  66
  67   Profile* profile = Profile::FromBrowserContext(
  68       web_contents->GetBrowserContext());
  69
  70   gfx::JavaBitmap bitmap_lock(bitmap);
  71   SkBitmap sk_bitmap;
  72   gfx::Size size = bitmap_lock.size();
  73   SkColorType color_type = kN32_SkColorType;
  74   sk_bitmap.setInfo(
  75       SkImageInfo::Make(size.width(), size.height(),
  76                         color_type, kPremul_SkAlphaType), 0);
  77   sk_bitmap.setPixels(bitmap_lock.pixels());
  78
  79   // TODO(nileshagrawal): Refactor this.
  80   // We were using some non-public methods from ThumbnailTabHelper. We need to
  81   // either add android specific logic to ThumbnailTabHelper or create our own
  82   // helper which is driven by the java app (will need to pull out some logic
  83   // from ThumbnailTabHelper to a common class).
  84   scoped_refptr<history::TopSites> ts = TopSitesFactory::GetForProfile(profile);
  85   if (!ts)
  86     return;
  87
  88   // Compute the thumbnail score.
  89   ThumbnailScore score;
  90   score.at_top = jat_top;
  91   score.boring_score = color_utils::CalculateBoringScore(sk_bitmap);
  92   score.good_clipping = true;
  93   score.load_completed = !web_contents->IsLoading();
  94
  95   gfx::Image image = gfx::Image::CreateFrom1xBitmap(sk_bitmap);
  96   const GURL& url = web_contents->GetURL();
  97   ts->SetPageThumbnail(url, image, score);
  98 }