/* SPDX-FileCopyrightText: 2014 Martin Gräßlin SPDX-FileCopyrightText: 2020 David Edmundson SPDX-FileCopyrightText: 2020 Vlad Zahorodnii SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL */ #include "datadevice_interface.h" #include "datadevice_interface_p.h" #include "datadevicemanager_interface.h" #include "datasource_interface.h" #include "dataoffer_interface.h" #include "display.h" #include "pointer_interface.h" #include "seat_interface.h" #include "seat_interface_p.h" #include "surface_interface.h" #include "surfacerole_p.h" namespace KWaylandServer { class DragAndDropIconPrivate : public SurfaceRole { public: explicit DragAndDropIconPrivate(SurfaceInterface *surface); void commit() override; QPoint position; }; DragAndDropIconPrivate::DragAndDropIconPrivate(SurfaceInterface *surface) : SurfaceRole(surface, QByteArrayLiteral("dnd_icon")) { } void DragAndDropIconPrivate::commit() { position += surface()->offset(); } DragAndDropIcon::DragAndDropIcon(SurfaceInterface *surface, QObject *parent) : QObject(parent) , d(new DragAndDropIconPrivate(surface)) { } DragAndDropIcon::~DragAndDropIcon() { } QPoint DragAndDropIcon::position() const { return d->position; } SurfaceInterface *DragAndDropIcon::surface() const { return d->surface(); } DataDeviceInterfacePrivate *DataDeviceInterfacePrivate::get(DataDeviceInterface *device) { return device->d.data(); } DataDeviceInterfacePrivate::DataDeviceInterfacePrivate(SeatInterface *seat, DataDeviceInterface *_q, wl_resource *resource) : QtWaylandServer::wl_data_device(resource) , seat(seat) , q(_q) { } void DataDeviceInterfacePrivate::endDrag() { icon.reset(); } void DataDeviceInterfacePrivate::data_device_start_drag(Resource *resource, wl_resource *sourceResource, wl_resource *originResource, wl_resource *iconResource, uint32_t serial) { SurfaceInterface *iconSurface = SurfaceInterface::get(iconResource); const SurfaceRole *surfaceRole = SurfaceRole::get(iconSurface); if (surfaceRole) { wl_resource_post_error(resource->handle, error_role, "the icon surface already has a role assigned %s", surfaceRole->name().constData()); return; } SurfaceInterface *focusSurface = SurfaceInterface::get(originResource); DataSourceInterface *dataSource = nullptr; if (sourceResource) { dataSource = DataSourceInterface::get(sourceResource); } if (proxyRemoteSurface) { // origin is a proxy surface focusSurface = proxyRemoteSurface.data(); } const bool pointerGrab = seat->hasImplicitPointerGrab(serial) && seat->focusedPointerSurface() == focusSurface; if (!pointerGrab) { // Client doesn't have pointer grab. const bool touchGrab = seat->hasImplicitTouchGrab(serial) && seat->focusedTouchSurface() == focusSurface; if (!touchGrab) { // Client neither has pointer nor touch grab. No drag start allowed. return; } } // TODO: source is allowed to be null, handled client internally! source = dataSource; if (dataSource) { QObject::connect(dataSource, &AbstractDataSource::aboutToBeDestroyed, q, [this] { source = nullptr; }); } if (iconSurface) { icon.reset(new DragAndDropIcon(iconSurface)); QObject::connect(iconSurface, &SurfaceInterface::aboutToBeDestroyed, icon.data(), [this] { icon.reset(); }); } surface = focusSurface; drag.serial = serial; emit q->dragStarted(); } void DataDeviceInterfacePrivate::data_device_set_selection(Resource *resource, wl_resource *source, uint32_t serial) { Q_UNUSED(resource) Q_UNUSED(serial) DataSourceInterface *dataSource = DataSourceInterface::get(source); if (dataSource && dataSource->supportedDragAndDropActions() && wl_resource_get_version(dataSource->resource()) >= WL_DATA_SOURCE_ACTION_SINCE_VERSION) { wl_resource_post_error(dataSource->resource(), QtWaylandServer::wl_data_source::error_invalid_source, "Data source is for drag and drop"); return; } if (selection == dataSource) { return; } if (selection) { selection->cancel(); } selection = dataSource; if (selection) { emit q->selectionChanged(selection); } else { emit q->selectionCleared(); } } void DataDeviceInterfacePrivate::data_device_release(QtWaylandServer::wl_data_device::Resource *resource) { wl_resource_destroy(resource->handle); } DataOfferInterface *DataDeviceInterfacePrivate::createDataOffer(AbstractDataSource *source) { if (!source) { // a data offer can only exist together with a source return nullptr; } wl_resource *data_offer_resource = wl_resource_create(resource()->client(), &wl_data_offer_interface, resource()->version(), 0); if (!data_offer_resource) { wl_resource_post_no_memory(resource()->handle); return nullptr; } DataOfferInterface *offer = new DataOfferInterface(source, data_offer_resource); send_data_offer(offer->resource()); offer->sendAllOffers(); return offer; } void DataDeviceInterfacePrivate::data_device_destroy_resource(QtWaylandServer::wl_data_device::Resource *resource) { Q_UNUSED(resource) emit q->aboutToBeDestroyed(); delete q; } DataDeviceInterface::DataDeviceInterface(SeatInterface *seat, wl_resource *resource) : QObject(nullptr) , d(new DataDeviceInterfacePrivate(seat, this, resource)) { seat->d_func()->registerDataDevice(this); } DataDeviceInterface::~DataDeviceInterface() = default; SeatInterface *DataDeviceInterface::seat() const { return d->seat; } DataSourceInterface *DataDeviceInterface::dragSource() const { return d->source; } DragAndDropIcon *DataDeviceInterface::icon() const { return d->icon.data(); } SurfaceInterface *DataDeviceInterface::origin() const { return d->proxyRemoteSurface ? d->proxyRemoteSurface.data() : d->surface; } DataSourceInterface *DataDeviceInterface::selection() const { return d->selection; } void DataDeviceInterface::sendSelection(AbstractDataSource *other) { auto r = d->createDataOffer(other); if (!r) { return; } d->send_selection(r->resource()); } void DataDeviceInterface::sendClearSelection() { d->send_selection(nullptr); } void DataDeviceInterface::drop() { d->send_drop(); if (d->drag.posConnection) { disconnect(d->drag.posConnection); d->drag.posConnection = QMetaObject::Connection(); } disconnect(d->drag.destroyConnection); d->drag.destroyConnection = QMetaObject::Connection(); d->drag.surface = nullptr; wl_client_flush(d->resource()->client()); } void DataDeviceInterface::updateDragTarget(SurfaceInterface *surface, quint32 serial) { if (d->drag.surface) { if (d->drag.surface->resource()) { d->send_leave(); } if (d->drag.posConnection) { disconnect(d->drag.posConnection); d->drag.posConnection = QMetaObject::Connection(); } disconnect(d->drag.destroyConnection); d->drag.destroyConnection = QMetaObject::Connection(); d->drag.surface = nullptr; if (d->drag.sourceActionConnection) { disconnect(d->drag.sourceActionConnection); d->drag.sourceActionConnection = QMetaObject::Connection(); } if (d->drag.targetActionConnection) { disconnect(d->drag.targetActionConnection); d->drag.targetActionConnection = QMetaObject::Connection(); } // don't update serial, we need it } if (!surface) { if (auto s = d->seat->dragSource()->dragSource()) { s->dndAction(DataDeviceManagerInterface::DnDAction::None); } return; } if (d->proxyRemoteSurface && d->proxyRemoteSurface == surface) { // A proxy can not have the remote surface as target. // TODO: do this for all client's surfaces? return; } auto *source = d->seat->dragSource()->dragSource(); if (source) { source->setAccepted(false); } DataOfferInterface *offer = d->createDataOffer(source); d->drag.surface = surface; if (d->seat->isDragPointer()) { d->drag.posConnection = connect(d->seat, &SeatInterface::pointerPosChanged, this, [this] { const QPointF pos = d->seat->dragSurfaceTransformation().map(d->seat->pointerPos()); d->send_motion(d->seat->timestamp(), wl_fixed_from_double(pos.x()), wl_fixed_from_double(pos.y())); wl_client_flush(d->resource()->client()); } ); } else if (d->seat->isDragTouch()) { d->drag.posConnection = connect(d->seat, &SeatInterface::touchMoved, this, [this](qint32 id, quint32 serial, const QPointF &globalPosition) { Q_UNUSED(id); if (serial != d->drag.serial) { // different touch down has been moved return; } const QPointF pos = d->seat->dragSurfaceTransformation().map(globalPosition); d->send_motion(d->seat->timestamp(), wl_fixed_from_double(pos.x()), wl_fixed_from_double(pos.y())); wl_client_flush(d->resource()->client()); } ); } d->drag.destroyConnection = connect(d->drag.surface, &QObject::destroyed, this, [this] { d->send_leave(); if (d->drag.posConnection) { disconnect(d->drag.posConnection); } d->drag = DataDeviceInterfacePrivate::Drag(); } ); // TODO: handle touch position const QPointF pos = d->seat->dragSurfaceTransformation().map(d->seat->pointerPos()); d->send_enter(serial, surface->resource(), wl_fixed_from_double(pos.x()), wl_fixed_from_double(pos.y()), offer ? offer->resource() : nullptr); if (offer) { offer->sendSourceActions(); auto matchOffers = [source, offer] { DataDeviceManagerInterface::DnDAction action{DataDeviceManagerInterface::DnDAction::None}; if (source->supportedDragAndDropActions().testFlag(offer->preferredDragAndDropAction())) { action = offer->preferredDragAndDropAction(); } else { if (source->supportedDragAndDropActions().testFlag(DataDeviceManagerInterface::DnDAction::Copy) && offer->supportedDragAndDropActions().testFlag(DataDeviceManagerInterface::DnDAction::Copy)) { action = DataDeviceManagerInterface::DnDAction::Copy; } else if (source->supportedDragAndDropActions().testFlag(DataDeviceManagerInterface::DnDAction::Move) && offer->supportedDragAndDropActions().testFlag(DataDeviceManagerInterface::DnDAction::Move)) { action = DataDeviceManagerInterface::DnDAction::Move; } else if (source->supportedDragAndDropActions().testFlag(DataDeviceManagerInterface::DnDAction::Ask) && offer->supportedDragAndDropActions().testFlag(DataDeviceManagerInterface::DnDAction::Ask)) { action = DataDeviceManagerInterface::DnDAction::Ask; } } offer->dndAction(action); source->dndAction(action); }; d->drag.targetActionConnection = connect(offer, &DataOfferInterface::dragAndDropActionsChanged, source, matchOffers); d->drag.sourceActionConnection = connect(source, &DataSourceInterface::supportedDragAndDropActionsChanged, source, matchOffers); } wl_client_flush(d->resource()->client()); } quint32 DataDeviceInterface::dragImplicitGrabSerial() const { return d->drag.serial; } void DataDeviceInterface::updateProxy(SurfaceInterface *remote) { // TODO: connect destroy signal? d->proxyRemoteSurface = remote; } wl_client *DataDeviceInterface::client() { return d->resource()->client(); } }