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// Copyright 2014 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 CHROMEOS_DBUS_LORGNETTE_MANAGER_CLIENT_H_
#define CHROMEOS_DBUS_LORGNETTE_MANAGER_CLIENT_H_
#include <map>
#include "base/callback.h"
#include "base/files/file.h"
#include "base/memory/ref_counted_memory.h"
#include "chromeos/chromeos_export.h"
#include "chromeos/dbus/dbus_client.h"
namespace chromeos {
// LorgnetteManagerClient is used to communicate with the lorgnette
// document scanning daemon.
class CHROMEOS_EXPORT LorgnetteManagerClient : public DBusClient {
public:
// The property information for each scanner retured by ListScanners.
typedef std::map<std::string, std::string> ScannerTableEntry;
typedef std::map<std::string, ScannerTableEntry> ScannerTable;
// Callback type for ListScanners(). Returns a map which contains
// a ScannerTableEntry for each available scanner.
typedef base::Callback<void(
bool succeeded, const ScannerTable&)> ListScannersCallback;
// Called once ScanImageToFile() is complete. Takes one parameter:
// - succeeded: was the scan completed successfully.
typedef base::Callback<void(bool succeeded)> ScanImageToFileCallback;
// Called once ScanImageToString() is complete. Takes two parameters:
// - succeeded: was the scan completed successfully.
// - image_data: the contents of the image.
typedef base::Callback<void(
bool succeeded,
const std::string& image_data)> ScanImageToStringCallback;
// Attributes provided to a scan request.
struct ScanProperties {
ScanProperties() : resolution_dpi(0) {}
std::string mode; // Can be "Color", "Gray", or "Lineart".
int resolution_dpi;
};
~LorgnetteManagerClient() override;
// Gets a list of scanners from the lorgnette manager.
virtual void ListScanners(const ListScannersCallback& callback) = 0;
// Request a scanned image to be scanned to |file| and calls |callback|
// when completed. Image data will be stored in the .png format.
virtual void ScanImageToFile(std::string device_name,
const ScanProperties& properties,
const ScanImageToFileCallback& callback,
base::File* file) = 0;
// Request a scanned image and calls |callback| when completed with a string
// pointing at the scanned image data. Image data will be stored in the .png
// format.
virtual void ScanImageToString(std::string device_name,
const ScanProperties& properties,
const ScanImageToStringCallback& callback) = 0;
// Factory function, creates a new instance and returns ownership.
// For normal usage, access the singleton via DBusThreadManager::Get().
static LorgnetteManagerClient* Create();
protected:
// Create() should be used instead.
LorgnetteManagerClient();
private:
DISALLOW_COPY_AND_ASSIGN(LorgnetteManagerClient);
};
} // namespace chromeos
#endif // CHROMEOS_DBUS_LORGNETTE_MANAGER_CLIENT_H_
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