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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_SNAPSHOT_SCREENSHOT_GRABBER_H_
#define UI_SNAPSHOT_SCREENSHOT_GRABBER_H_
#include <memory>
#include <string>
#include "base/functional/callback.h"
#include "base/memory/ref_counted_memory.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/snapshot/snapshot_export.h"
namespace ui {
// Result of the entire screenshotting attempt. This enum is fat for various
// file operations which could happen in the chrome layer.
enum class ScreenshotResult {
SUCCESS,
GRABWINDOW_PARTIAL_FAILED,
GRABWINDOW_FULL_FAILED,
CREATE_DIR_FAILED,
GET_DIR_FAILED,
CHECK_DIR_FAILED,
CREATE_FILE_FAILED,
WRITE_FILE_FAILED,
// Disabled by an enterprise policy or special modes.
DISABLED,
// Disabled by Data Leak Prevention feature.
DISABLED_BY_DLP
};
class SNAPSHOT_EXPORT ScreenshotGrabber {
public:
ScreenshotGrabber();
ScreenshotGrabber(const ScreenshotGrabber&) = delete;
ScreenshotGrabber& operator=(const ScreenshotGrabber&) = delete;
~ScreenshotGrabber();
// Callback for the new system, which ignores the observer crud.
using ScreenshotCallback =
base::OnceCallback<void(ui::ScreenshotResult screenshot_result,
scoped_refptr<base::RefCountedMemory> png_data)>;
// Takes a screenshot of |rect| in |window| in that window's coordinate space
// and return it to |callback|.
void TakeScreenshot(gfx::NativeWindow window,
const gfx::Rect& rect,
ScreenshotCallback callback);
bool CanTakeScreenshot();
private:
#if defined(USE_AURA)
class ScopedCursorHider;
#endif
void GrabSnapshotImageCallback(
const std::string& window_identifier,
bool is_partial,
ScreenshotCallback callback,
scoped_refptr<base::RefCountedMemory> png_data);
// The timestamp when the screenshot task was issued last time.
base::TimeTicks last_screenshot_timestamp_;
#if defined(USE_AURA)
// The object to hide cursor when taking screenshot.
std::unique_ptr<ScopedCursorHider> cursor_hider_;
#endif
base::WeakPtrFactory<ScreenshotGrabber> factory_{this};
};
} // namespace ui
#endif // UI_SNAPSHOT_SCREENSHOT_GRABBER_H_
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