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// Copyright (c) 2012 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 UI_SNAPSHOT_SNAPSHOT_H_
#define UI_SNAPSHOT_SNAPSHOT_H_
#include <vector>
#include "base/callback_forward.h"
#include "base/memory/ref_counted.h"
#include "base/memory/ref_counted_memory.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/snapshot/snapshot_export.h"
namespace base {
class TaskRunner;
}
namespace gfx {
class Rect;
class Image;
class Size;
}
namespace ui {
// Grabs a snapshot of the window/view. No security checks are done. This is
// intended to be used for debugging purposes where no BrowserProcess instance
// is available (ie. tests). This function is synchronous, so it should NOT be
// used in a result of user action. Support for async vs synchronous
// GrabWindowSnapshot differs by platform. To be most general, use the
// synchronous function first and if it returns false call the async one.
SNAPSHOT_EXPORT bool GrabWindowSnapshot(
gfx::NativeWindow window,
std::vector<unsigned char>* png_representation,
const gfx::Rect& snapshot_bounds);
SNAPSHOT_EXPORT bool GrabViewSnapshot(
gfx::NativeView view,
std::vector<unsigned char>* png_representation,
const gfx::Rect& snapshot_bounds);
// These functions take a snapshot of |source_rect|, specified in layer space
// coordinates (DIP for desktop, physical pixels for Android), and scale the
// snapshot to |target_size| (in physical pixels), asynchronously.
typedef base::Callback<void(const gfx::Image& snapshot)>
GrabWindowSnapshotAsyncCallback;
SNAPSHOT_EXPORT void GrabWindowSnapshotAndScaleAsync(
gfx::NativeWindow window,
const gfx::Rect& source_rect,
const gfx::Size& target_size,
scoped_refptr<base::TaskRunner> background_task_runner,
const GrabWindowSnapshotAsyncCallback& callback);
typedef base::Callback<void(scoped_refptr<base::RefCountedBytes> png_data)>
GrabWindowSnapshotAsyncPNGCallback;
SNAPSHOT_EXPORT void GrabWindowSnapshotAsync(
gfx::NativeWindow window,
const gfx::Rect& source_rect,
scoped_refptr<base::TaskRunner> background_task_runner,
const GrabWindowSnapshotAsyncPNGCallback& callback);
SNAPSHOT_EXPORT void GrabViewSnapshotAsync(
gfx::NativeView view,
const gfx::Rect& source_rect,
scoped_refptr<base::TaskRunner> background_task_runner,
const GrabWindowSnapshotAsyncPNGCallback& callback);
} // namespace ui
#endif // UI_SNAPSHOT_SNAPSHOT_H_
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