[HTMLCanvasElement.toBlob] Default callback version without scheduler

Source/core/fileapi/File.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #include "config.h"
 #include "core/fileapi/File.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/fileapi/FilePropertyBag.h"
 #include "platform/FileMetadata.h"
 #include "platform/MIMETypeRegistry.h"
+#include "platform/blob/BlobData.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebFileUtilities.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/DateMath.h"
 
 namespace blink {
 
 static String getContentTypeFromFileName(const String& name, File::ContentTypeLookupPolicy policy)
 {
     String type;
@@ skipping 50 matching lines @@
     if (!options.type().containsOnlyASCII()) {
         exceptionState.throwDOMException(SyntaxError, "The 'type' property must consist of ASCII characters.");
         return nullptr;
     }
 
     double lastModified;
     if (options.hasLastModified())
         lastModified = static_cast<double>(options.lastModified());
     else
         lastModified = currentTimeMS();
-
     ASSERT(options.hasEndings());
     bool normalizeLineEndingsToNative = options.endings() == "native";
 
     OwnPtr<BlobData> blobData = BlobData::create();
     blobData->setContentType(options.type().lower());
     populateBlobData(blobData.get(), fileBits, normalizeLineEndingsToNative);
 
     long long fileSize = blobData->length();
     return File::create(fileName, lastModified, BlobDataHandle::create(blobData.release(), fileSize));
 }
 
+File* File::create(char* encodedImage, size_t size, const String& mimeType)

[Justin Novosad, 2015/08/20 20:38:43]

encodedImage -> data
size -> bytes

[xlai (Olivia), 2015/08/20 21:36:29]

Acknowledged.

+{
+    ASSERT(encodedImage);
+
+    OwnPtr<BlobData> blobData = BlobData::create();
+    blobData->setContentType(mimeType);
+    blobData->appendBytes(encodedImage, size);
+    long long blobSize = blobData->length();
+
+    // create blob as the type of file with two additional attributes -- name and lastModificationTime
+    return File::create("", currentTimeMS(), BlobDataHandle::create(blobData.release(), blobSize));
+}
+
 File* File::createWithRelativePath(const String& path, const String& relativePath)
 {
     File* file = new File(path, File::AllContentTypes, File::IsUserVisible);
     file->m_relativePath = relativePath;
     return file;
 }
 
 File::File(const String& path, ContentTypeLookupPolicy policy, UserVisibility userVisibility)
     : Blob(BlobDataHandle::create(createBlobDataForFile(path, policy), -1))
     , m_hasBackingFile(true)
@@ skipping 229 matching lines @@
     if (m_fileSystemURL.isEmpty() != other.m_fileSystemURL.isEmpty())
         return false;
 
     if (!m_fileSystemURL.isEmpty())
         return m_fileSystemURL == other.m_fileSystemURL;
 
     return uuid() == other.uuid();
 }
 
 } // namespace blink