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clipboard: Sync wayland implementation with that on Plasma

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It has a few important issues fixed that should make our life a bit
better.
This commit is contained in:
Aleix Pol 2021-10-14 17:18:48 +02:00 committed by Aleix Pol Gonzalez
parent 89f3dccf32
commit 599bcbac56
4 changed files with 162 additions and 92 deletions
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13
plugins/clipboard/clipboardlistener.cpp
View file

@ -82,13 +82,7 @@ void QClipboardListener::setText(const QString& content)
WaylandClipboardListener::WaylandClipboardListener()
: m_dataControl(new DataControl(this))
{
connect(m_dataControl, &DataControl::receivedSelectionChanged, this, [this] {
refresh(m_dataControl->receivedSelection());
});
connect(m_dataControl, &DataControl::selectionChanged, this, [this] {
refresh(m_dataControl->selection());
});
connect(m_dataControl, &DataControl::changed, this, &WaylandClipboardListener::refresh);
}
void WaylandClipboardListener::setText(const QString& content)
@ -96,11 +90,12 @@ void WaylandClipboardListener::setText(const QString& content)
refreshContent(content);
auto mime = new QMimeData;
mime->setText(content);
m_dataControl->setSelection(mime, true);
m_dataControl->setMimeData(mime, QClipboard::Clipboard);
}
void WaylandClipboardListener::refresh(const QMimeData *mime)
void WaylandClipboardListener::refresh()
{
const QMimeData *mime = m_dataControl->mimeData(QClipboard::Clipboard);
if (!mime || !mime->hasText()) {
return;
}

2
plugins/clipboard/clipboardlistener.h
View file

@ -66,7 +66,7 @@ public:
void setText(const QString & content) override;
private:
void refresh(const QMimeData *mime);
void refresh();
DataControl *m_dataControl;
};

216
plugins/clipboard/datacontrol.cpp
View file

@ -1,28 +1,40 @@
/*
SPDX-FileCopyrightText: 2020 David Edmundson <davidedmundson@kde.org>
SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "datacontrol.h"
#include "qwayland-wlr-data-control-unstable-v1.h"
#include <QtWaylandClient/QWaylandClientExtension>
#include <QDebug>
#include <QFile>
#include <QFutureWatcher>
#include <QGuiApplication>
#include <QPointer>
#include <QMimeData>
#include <QtWaylandClient/QWaylandClientExtension>
#include <qpa/qplatformnativeinterface.h>
#include <QVariant>
#include <errno.h>
#include <poll.h>
#include <string.h>
#include <unistd.h>
#include <plugin_clipboard_debug.h>
#include <sys/select.h>
#include "qwayland-wlr-data-control-unstable-v1.h"
static QString utf8Text()
{
return QStringLiteral("text/plain;charset=utf-8");
}
class DataControlDeviceManager : public QWaylandClientExtensionTemplate<DataControlDeviceManager>, public QtWayland::zwlr_data_control_manager_v1
{
Q_OBJECT
public:
DataControlDeviceManager()
: QWaylandClientExtensionTemplate<DataControlDeviceManager>(1)
: QWaylandClientExtensionTemplate<DataControlDeviceManager>(2)
{
}
@ -51,9 +63,12 @@ public:
return m_receivedFormats;
}
bool hasFormat(const QString &format) const override
bool hasFormat(const QString &mimeType) const override
{
return m_receivedFormats.contains(format);
if (mimeType == QStringLiteral("text/plain") && m_receivedFormats.contains(utf8Text())) {
return true;
}
return m_receivedFormats.contains(mimeType);
}
protected:
@ -71,18 +86,24 @@ private:
QVariant DataControlOffer::retrieveData(const QString &mimeType, QVariant::Type type) const
{
if (!hasFormat(mimeType)) {
return QVariant();
}
Q_UNUSED(type);
QString mime = mimeType;
if (!m_receivedFormats.contains(mimeType)) {
if (mimeType == QStringLiteral("text/plain") && m_receivedFormats.contains(utf8Text())) {
mime = utf8Text();
} else {
return QVariant();
}
}
int pipeFds[2];
if (pipe(pipeFds) != 0) {
return QVariant();
}
auto t = const_cast<DataControlOffer *>(this);
t->receive(mimeType, pipeFds[1]);
t->receive(mime, pipeFds[1]);
close(pipeFds[1]);
@ -101,6 +122,7 @@ QVariant DataControlOffer::retrieveData(const QString &mimeType, QVariant::Type
if (readPipe.open(pipeFds[0], QIODevice::ReadOnly)) {
QByteArray data;
if (readData(pipeFds[0], data)) {
close(pipeFds[0]);
return data;
}
close(pipeFds[0]);
@ -112,27 +134,26 @@ QVariant DataControlOffer::retrieveData(const QString &mimeType, QVariant::Type
// true if data is read successfully
bool DataControlOffer::readData(int fd, QByteArray &data)
{
fd_set readset;
FD_ZERO(&readset);
FD_SET(fd, &readset);
struct timeval timeout;
timeout.tv_sec = 1;
timeout.tv_usec = 0;
pollfd pfds[1];
pfds[0].fd = fd;
pfds[0].events = POLLIN;
Q_FOREVER {
int ready = select(FD_SETSIZE, &readset, nullptr, nullptr, &timeout);
while (true) {
const int ready = poll(pfds, 1, 1000);
if (ready < 0) {
qCWarning(KDECONNECT_PLUGIN_CLIPBOARD) << "DataControlOffer: select() failed";
return false;
if (errno != EINTR) {
qWarning("DataControlOffer: poll() failed: %s", strerror(errno));
return false;
}
} else if (ready == 0) {
qCWarning(KDECONNECT_PLUGIN_CLIPBOARD) << "DataControlOffer: timeout reading from pipe";
qWarning("DataControlOffer: timeout reading from pipe");
return false;
} else {
char buf[4096];
int n = read(fd, buf, sizeof buf);
if (n < 0) {
qWarning("DataControlOffer: read() failed");
qWarning("DataControlOffer: read() failed: %s", strerror(errno));
return false;
} else if (n == 0) {
return true;
@ -177,8 +198,7 @@ DataControlSource::DataControlSource(struct ::zwlr_data_control_source_v1 *id, Q
for (const QString &format : mimeData->formats()) {
offer(format);
}
if(mimeData->hasText())
{
if (mimeData->hasText()) {
// ensure GTK applications get this mimetype to avoid them discarding the offer
offer(QStringLiteral("text/plain;charset=utf-8"));
}
@ -188,7 +208,7 @@ void DataControlSource::zwlr_data_control_source_v1_send(const QString &mime_typ
{
QFile c;
QString send_mime_type = mime_type;
if(send_mime_type == QStringLiteral("text/plain;charset=utf-8")) {
if (send_mime_type == QStringLiteral("text/plain;charset=utf-8")) {
// if we get a request on the fallback mime, send the data from the original mime type
send_mime_type = QStringLiteral("text/plain");
}
@ -227,10 +247,23 @@ public:
return m_selection ? m_selection->mimeData() : nullptr;
}
void setPrimarySelection(std::unique_ptr<DataControlSource> selection);
QMimeData *receivedPrimarySelection()
{
return m_receivedPrimarySelection.get();
}
QMimeData *primarySelection()
{
return m_primarySelection ? m_primarySelection->mimeData() : nullptr;
}
Q_SIGNALS:
void receivedSelectionChanged();
void selectionChanged();
void receivedPrimarySelectionChanged();
void primarySelectionChanged();
protected:
void zwlr_data_control_device_v1_data_offer(struct ::zwlr_data_control_offer_v1 *id) override
{
@ -251,9 +284,24 @@ protected:
Q_EMIT receivedSelectionChanged();
}
void zwlr_data_control_device_v1_primary_selection(struct ::zwlr_data_control_offer_v1 *id) override
{
if (!id) {
m_receivedPrimarySelection.reset();
} else {
auto deriv = QtWayland::zwlr_data_control_offer_v1::fromObject(id);
auto offer = dynamic_cast<DataControlOffer *>(deriv); // dynamic because of the dual inheritance
m_receivedPrimarySelection.reset(offer);
}
Q_EMIT receivedPrimarySelectionChanged();
}
private:
std::unique_ptr<DataControlSource> m_selection; // selection set locally
std::unique_ptr<DataControlOffer> m_receivedSelection; // latest selection set from externally to here
std::unique_ptr<DataControlSource> m_primarySelection; // selection set locally
std::unique_ptr<DataControlOffer> m_receivedPrimarySelection; // latest selection set from externally to here
};
void DataControlDevice::setSelection(std::unique_ptr<DataControlSource> selection)
@ -267,25 +315,27 @@ void DataControlDevice::setSelection(std::unique_ptr<DataControlSource> selectio
Q_EMIT selectionChanged();
}
class DataControlPrivate
void DataControlDevice::setPrimarySelection(std::unique_ptr<DataControlSource> selection)
{
public:
DataControlPrivate()
: m_manager(new DataControlDeviceManager)
{}
std::unique_ptr<DataControlDeviceManager> m_manager;
std::unique_ptr<DataControlDevice> m_device;
};
m_primarySelection = std::move(selection);
connect(m_primarySelection.get(), &DataControlSource::cancelled, this, [this]() {
m_primarySelection.reset();
Q_EMIT primarySelectionChanged();
});
if (zwlr_data_control_device_v1_get_version(object()) >= ZWLR_DATA_CONTROL_DEVICE_V1_SET_PRIMARY_SELECTION_SINCE_VERSION) {
set_primary_selection(m_primarySelection->object());
Q_EMIT primarySelectionChanged();
}
}
DataControl::DataControl(QObject *parent)
: QObject(parent)
, d(new DataControlPrivate)
, m_manager(new DataControlDeviceManager)
{
connect(d->m_manager.get(), &DataControlDeviceManager::activeChanged, this, [this]() {
if (d->m_manager->isActive()) {
QPlatformNativeInterface *native = qGuiApp->platformNativeInterface();
connect(m_manager.get(), &DataControlDeviceManager::activeChanged, this, [this]() {
if (m_manager->isActive()) {
QPlatformNativeInterface *native = qApp->platformNativeInterface();
if (!native) {
return;
}
@ -294,58 +344,84 @@ DataControl::DataControl(QObject *parent)
return;
}
d->m_device.reset(new DataControlDevice(d->m_manager->get_data_device(seat)));
m_device.reset(new DataControlDevice(m_manager->get_data_device(seat)));
connect(m_device.get(), &DataControlDevice::receivedSelectionChanged, this, [this]() {
Q_EMIT changed(QClipboard::Clipboard);
});
connect(m_device.get(), &DataControlDevice::selectionChanged, this, [this]() {
Q_EMIT changed(QClipboard::Clipboard);
});
connect(m_device.get(), &DataControlDevice::receivedPrimarySelectionChanged, this, [this]() {
Q_EMIT changed(QClipboard::Selection);
});
connect(m_device.get(), &DataControlDevice::primarySelectionChanged, this, [this]() {
Q_EMIT changed(QClipboard::Selection);
});
connect(d->m_device.get(), &DataControlDevice::receivedSelectionChanged, this, &DataControl::receivedSelectionChanged);
connect(d->m_device.get(), &DataControlDevice::selectionChanged, this, &DataControl::selectionChanged);
} else {
d->m_device.reset();
m_device.reset();
}
});
}
DataControl::~DataControl() = default;
QMimeData *DataControl::selection() const
void DataControl::setMimeData(QMimeData *mime, QClipboard::Mode mode)
{
return d->m_device ? d->m_device->selection() : nullptr;
}
QMimeData * DataControl::receivedSelection() const
{
return d->m_device ? d->m_device->receivedSelection() : nullptr;
}
void DataControl::setSelection(QMimeData* mime, bool ownMime)
{
if (!d->m_device) {
if (!m_device) {
return;
}
auto source = std::make_unique<DataControlSource>(d->m_manager->create_data_source(), mime);
if (ownMime) {
mime->setParent(source.get());
auto source = std::make_unique<DataControlSource>(m_manager->create_data_source(), mime);
if (mode == QClipboard::Clipboard) {
m_device->setSelection(std::move(source));
} else if (mode == QClipboard::Selection) {
m_device->setPrimarySelection(std::move(source));
}
d->m_device->setSelection(std::move(source));
}
void DataControl::clearSelection()
void DataControl::clear(QClipboard::Mode mode)
{
if (!d->m_device) {
if (!m_device) {
return;
}
d->m_device->set_selection(nullptr);
if (mode == QClipboard::Clipboard) {
m_device->set_selection(nullptr);
} else if (mode == QClipboard::Selection) {
if (zwlr_data_control_device_v1_get_version(m_device->object()) >= ZWLR_DATA_CONTROL_DEVICE_V1_SET_PRIMARY_SELECTION_SINCE_VERSION) {
m_device->set_primary_selection(nullptr);
}
}
}
void DataControl::clearPrimarySelection()
const QMimeData *DataControl::mimeData(QClipboard::Mode mode) const
{
if (!d->m_device) {
return;
if (!m_device) {
return nullptr;
}
if (zwlr_data_control_device_v1_get_version(d->m_device->object()) >= ZWLR_DATA_CONTROL_DEVICE_V1_SET_PRIMARY_SELECTION_SINCE_VERSION) {
d->m_device->set_primary_selection(nullptr);
// return our locally set selection if it's not cancelled to avoid copying data to ourselves
if (mode == QClipboard::Clipboard) {
if (m_device->selection()) {
return m_device->selection();
}
// This application owns the clipboard via the regular data_device, use it so we don't block ourselves
if (QGuiApplication::clipboard()->ownsClipboard()) {
return QGuiApplication::clipboard()->mimeData(mode);
}
return m_device->receivedSelection();
} else if (mode == QClipboard::Selection) {
if (m_device->primarySelection()) {
return m_device->primarySelection();
}
// This application owns the primary selection via the regular primary_selection_device, use it so we don't block ourselves
if (QGuiApplication::clipboard()->ownsSelection()) {
return QGuiApplication::clipboard()->mimeData(mode);
}
return m_device->receivedPrimarySelection();
}
return nullptr;
}
#include "datacontrol.moc"

21
plugins/clipboard/datacontrol.h
View file

@ -7,8 +7,11 @@
#pragma once
#include <QObject>
#include <QScopedPointer>
#include <QClipboard>
#include <memory>
class DataControlPrivate;
class DataControlDevice;
class DataControlDeviceManager;
class QMimeData;
class DataControl : public QObject
@ -18,18 +21,14 @@ public:
DataControl(QObject *parent = nullptr);
~DataControl() override;
QMimeData* selection() const;
QMimeData* receivedSelection() const;
void clearSelection();
void clearPrimarySelection();
void setSelection(QMimeData *mime, bool ownMime);
const QMimeData *mimeData(QClipboard::Mode mode) const;
void setMimeData(QMimeData *mime, QClipboard::Mode mode);
void clear(QClipboard::Mode mode);
Q_SIGNALS:
void receivedSelectionChanged();
void selectionChanged();
void changed(QClipboard::Mode mode);
private:
QScopedPointer<DataControlPrivate> d;
std::unique_ptr<DataControlDeviceManager> m_manager;
std::unique_ptr<DataControlDevice> m_device;
};