kwin/xwl/selection_source.h
2020-08-07 19:57:56 +00:00

164 lines
3.4 KiB
C++

/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 2019 Roman Gilg <subdiff@gmail.com>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef KWIN_XWL_SELECTION_SOURCE
#define KWIN_XWL_SELECTION_SOURCE
#include <QObject>
#include <QVector>
#include <xcb/xcb.h>
class QSocketNotifier;
struct xcb_selection_request_event_t;
struct xcb_xfixes_selection_notify_event_t;
namespace KWayland
{
namespace Client
{
class DataSource;
}
}
namespace KWaylandServer
{
class DataDeviceInterface;
class DataSourceInterface;
class AbstractDataSource;
}
namespace KWin
{
namespace Xwl
{
class Selection;
/**
* Base class representing a data source.
*/
class SelectionSource : public QObject
{
Q_OBJECT
public:
SelectionSource(Selection *selection);
xcb_timestamp_t timestamp() const {
return m_timestamp;
}
void setTimestamp(xcb_timestamp_t time) {
m_timestamp = time;
}
protected:
Selection *selection() const {
return m_selection;
}
void setWindow(xcb_window_t window) {
m_window = window;
}
xcb_window_t window() const {
return m_window;
}
private:
xcb_timestamp_t m_timestamp = XCB_CURRENT_TIME;
Selection *m_selection;
xcb_window_t m_window;
Q_DISABLE_COPY(SelectionSource)
};
/**
* Representing a Wayland native data source.
*/
class WlSource : public SelectionSource
{
Q_OBJECT
public:
WlSource(Selection *selection);
void setDataSourceIface(KWaylandServer::AbstractDataSource *dsi);
bool handleSelectionRequest(xcb_selection_request_event_t *event);
void sendTargets(xcb_selection_request_event_t *event);
void sendTimestamp(xcb_selection_request_event_t *event);
void receiveOffer(const QString &mime);
void sendSelectionNotify(xcb_selection_request_event_t *event, bool success);
Q_SIGNALS:
void transferReady(xcb_selection_request_event_t *event, qint32 fd);
private:
bool checkStartTransfer(xcb_selection_request_event_t *event);
KWaylandServer::AbstractDataSource *m_dsi = nullptr;
QVector<QString> m_offers;
QMetaObject::Connection m_offerConnection;
Q_DISABLE_COPY(WlSource)
};
using Mimes = QVector<QPair<QString, xcb_atom_t> >;
/**
* Representing an X data source.
*/
class X11Source : public SelectionSource
{
Q_OBJECT
public:
X11Source(Selection *selection, xcb_xfixes_selection_notify_event_t *event);
/**
* @param ds must exist.
*
* X11Source does not take ownership of it in general, but if the function
* is called again, it will delete the previous data source.
*/
void setDataSource(KWayland::Client::DataSource *dataSource);
KWayland::Client::DataSource *dataSource() const {
return m_dataSource;
}
void getTargets();
Mimes offers() const {
return m_offers;
}
void setOffers(const Mimes &offers);
bool handleSelectionNotify(xcb_selection_notify_event_t *event);
void setRequestor(xcb_window_t window) {
setWindow(window);
}
Q_SIGNALS:
void offersChanged(const QStringList &added, const QStringList &removed);
void transferReady(xcb_atom_t target, qint32 fd);
private:
void handleTargets();
void startTransfer(const QString &mimeName, qint32 fd);
xcb_window_t m_owner;
KWayland::Client::DataSource *m_dataSource = nullptr;
Mimes m_offers;
Q_DISABLE_COPY(X11Source)
};
} // namespace Xwl
} // namespace KWin
#endif