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// Copyright (c) 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.
#ifndef CHROME_BROWSER_THUMBNAILS_THUMBNAILING_CONTEXT_H_
#define CHROME_BROWSER_THUMBNAILS_THUMBNAILING_CONTEXT_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "chrome/browser/thumbnails/thumbnail_service.h"
#include "chrome/common/thumbnail_score.h"
#include "content/public/browser/web_contents.h"
#include "ui/gfx/size.h"
namespace thumbnails {
// The result of clipping. This can be used to determine if the
// generated thumbnail is good or not.
enum ClipResult {
// Clipping is not done yet.
CLIP_RESULT_UNPROCESSED,
// The source image is smaller.
CLIP_RESULT_SOURCE_IS_SMALLER,
// Wider than tall by twice or more, clip horizontally.
CLIP_RESULT_MUCH_WIDER_THAN_TALL,
// Wider than tall, clip horizontally.
CLIP_RESULT_WIDER_THAN_TALL,
// Taller than wide, clip vertically.
CLIP_RESULT_TALLER_THAN_WIDE,
// The source and destination aspect ratios are identical.
CLIP_RESULT_NOT_CLIPPED,
// The source and destination are identical.
CLIP_RESULT_SOURCE_SAME_AS_TARGET,
};
// Holds the information needed for processing a thumbnail.
struct ThumbnailingContext : base::RefCountedThreadSafe<ThumbnailingContext> {
ThumbnailingContext(content::WebContents* web_contents,
ThumbnailService* receiving_service,
bool load_interrupted);
// Create an instance for use with unit tests.
static ThumbnailingContext* CreateThumbnailingContextForTest() {
return new ThumbnailingContext();
}
scoped_refptr<ThumbnailService> service;
GURL url;
ClipResult clip_result;
gfx::Size requested_copy_size;
ThumbnailScore score;
private:
ThumbnailingContext();
~ThumbnailingContext();
friend class base::RefCountedThreadSafe<ThumbnailingContext>;
};
}
#endif // CHROME_BROWSER_THUMBNAILS_THUMBNAILING_CONTEXT_H_
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