Web app: set a flag on the Intent if the icon was generated by Chromium.

chrome/browser/android/shortcut_helper.cc

 // Copyright 2013 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 "chrome/browser/android/shortcut_helper.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/manifest/manifest_icon_downloader.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
 #include "jni/ShortcutHelper_jni.h"
 #include "ui/gfx/android/java_bitmap.h"
+#include "ui/gfx/color_analysis.h"
 #include "url/gurl.h"
 
 using content::Manifest;
 
 namespace {
 
 static int kIdealHomescreenIconSize = -1;
 static int kMinimumHomescreenIconSize = -1;
 static int kIdealSplashImageSize = -1;
 static int kMinimumSplashImageSize = -1;
 
+static int kDefaultRGBIconValue = 145;
+
 // Retrieves and caches the ideal and minimum sizes of the Home screen icon
 // and the splash screen image.
 void GetHomescreenIconAndSplashImageSizes() {
   JNIEnv* env = base::android::AttachCurrentThread();
   ScopedJavaLocalRef<jintArray> java_size_array =
       Java_ShortcutHelper_getHomescreenIconAndSplashImageSizes(env,
           base::android::GetApplicationContext());
   std::vector<int> sizes;
   base::android::JavaIntArrayToIntVector(
       env, java_size_array.obj(), &sizes);
@@ skipping 43 matching lines @@
       java_webapp_id.obj(),
       java_url.obj(),
       java_user_title.obj(),
       java_name.obj(),
       java_short_name.obj(),
       java_bitmap.obj(),
       info.display == blink::WebDisplayModeStandalone,
       info.orientation,
       info.source,
       info.theme_color,
-      info.background_color);
+      info.background_color,
+      info.generated_icon);
 }
 
 int ShortcutHelper::GetIdealHomescreenIconSizeInDp() {
   if (kIdealHomescreenIconSize == -1)
     GetHomescreenIconAndSplashImageSizes();
   return kIdealHomescreenIconSize;
 }
 
 int ShortcutHelper::GetMinimumHomescreenIconSizeInDp() {
   if (kMinimumHomescreenIconSize == -1)
@@ skipping 43 matching lines @@
   ScopedJavaLocalRef<jobject> java_splash_image =
       gfx::ConvertToJavaBitmap(&splash_image);
 
   Java_ShortcutHelper_storeWebappData(
       env,
       base::android::GetApplicationContext(),
       java_webapp_id.obj(),
       java_splash_image.obj());
 }
 
+// static
+SkBitmap ShortcutHelper::FinalizeLauncherIcon(const SkBitmap& bitmap,
+                                              const GURL& url,
+                                              bool* generated) {

[gone, 2015/10/21 23:35:57]

is_generated

[mlamouri (slow - plz ping), 2015/10/22 14:37:06]

Done.

+  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
+
+  JNIEnv* env = base::android::AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> result;
+  *generated = false;
+
+  if (!bitmap.isNull()) {
+    ScopedJavaLocalRef<jobject> java_bitmap = gfx::ConvertToJavaBitmap(&bitmap);
+    if (Java_ShortcutHelper_isIconLargeEnoughForLauncher(
+        env, base::android::GetApplicationContext(), java_bitmap.obj())) {
+      result = Java_ShortcutHelper_modifyIconForLauncher(
+          env, base::android::GetApplicationContext(), java_bitmap.obj());
+    }
+  }
+
+  if (result.is_null()) {
+    ScopedJavaLocalRef<jstring> java_url =
+        base::android::ConvertUTF8ToJavaString(env, url.spec());
+    SkColor mean_color = SkColorSetRGB(
+        kDefaultRGBIconValue, kDefaultRGBIconValue, kDefaultRGBIconValue);
+
+    if (!bitmap.isNull())
+      mean_color = color_utils::CalculateKMeanColorOfBitmap(bitmap);
+
+    *generated = true;
+    result = Java_ShortcutHelper_generateLauncherIcon(
+        env, base::android::GetApplicationContext(), java_url.obj(),
+        SkColorGetR(mean_color), SkColorGetG(mean_color),
+        SkColorGetB(mean_color));
+  }
+
+  return gfx::CreateSkBitmapFromJavaBitmap(gfx::JavaBitmap(result.obj()));
+}
+
 bool ShortcutHelper::RegisterShortcutHelper(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }