Source code
Revision control
Copy as Markdown
// Copyright (C) 2017 ITAGE Corporation, author: <yusuke.binsaki@itage.co.jp>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:critical reason:network-protocol
#include "qwaylandivishellintegration.h"
#include <QtCore/qsize.h>
#include <QtCore/qdebug.h>
#include <QtWaylandClient/private/qwaylanddisplay_p.h>
#include <QtWaylandClient/private/qwaylandwindow_p.h>
#include <QtWaylandClient/private/qwaylandabstractdecoration_p.h>
#include "qwaylandivisurface_p.h"
#include <mutex>
#include <unistd.h>
QT_BEGIN_NAMESPACE
namespace QtWaylandClient {
class QWaylandIviController : public QWaylandClientExtensionTemplate<QWaylandIviController>,
public QtWayland::ivi_controller
{
public:
QWaylandIviController() : QWaylandClientExtensionTemplate(1) { }
void initialize() { QWaylandClientExtensionTemplate::initialize(); }
};
QWaylandIviShellIntegration::QWaylandIviShellIntegration()
: QWaylandShellIntegrationTemplate(1), m_iviController(new QWaylandIviController)
{
}
bool QWaylandIviShellIntegration::initialize(QWaylandDisplay *display)
{
QWaylandShellIntegrationTemplate::initialize(display);
m_iviController->initialize();
return isActive();
}
/* get unique id
* pattern1:
* When set QT_IVI_SURFACE_ID, We use it as ID.
* Next ID is increment.
* pattern2:
* When not set QT_IVI_SURFACE_ID, We use process ID and unused bit.
* process ID maximum is 2^22. Unused bit is 23 to 32 bit.
* Therefor, We use 23 to 32 bit. This do not overlap with other clients.
* Next ID is increment of 23 to 32 bit.
* +------------+---------------------------+
* |31 23|22 0|
* +------------+---------------------------+
* |0000 0000 00|00 0000 0000 0000 0000 0000|
* |<- ID ->|<- process ID ->|
* +------------+---------------------------+
*/
uint32_t QWaylandIviShellIntegration::getNextUniqueSurfaceId()
{
const uint32_t PID_MAX_EXPONENTIATION = 22; // 22 bit shift operation
const uint32_t ID_LIMIT = 1 << (32 - PID_MAX_EXPONENTIATION); // 10 bit is unique id
const std::lock_guard<QRecursiveMutex> locker(m_mutex);
if (m_lastSurfaceId == 0) {
QByteArray env = qgetenv("QT_IVI_SURFACE_ID");
bool ok;
m_lastSurfaceId = env.toUInt(&ok, 10);
if (ok)
m_useEnvSurfaceId = true;
else
m_lastSurfaceId = getpid();
return m_lastSurfaceId;
}
if (m_useEnvSurfaceId) {
m_lastSurfaceId++;
} else {
m_surfaceNumber++;
if (m_surfaceNumber >= ID_LIMIT) {
qWarning("IVI surface id counter overflow\n");
return 0;
}
m_lastSurfaceId += (m_surfaceNumber << PID_MAX_EXPONENTIATION);
}
return m_lastSurfaceId;
}
QWaylandShellSurface *QWaylandIviShellIntegration::createShellSurface(QWaylandWindow *window)
{
if (!isActive())
return nullptr;
uint32_t surfaceId = getNextUniqueSurfaceId();
if (surfaceId == 0)
return nullptr;
struct ivi_surface *surface = surface_create(surfaceId, window->wlSurface());
if (!m_iviController->isActive())
return new QWaylandIviSurface(surface, window);
struct ::ivi_controller_surface *controller = m_iviController->ivi_controller::surface_create(surfaceId);
QWaylandIviSurface *iviSurface = new QWaylandIviSurface(surface, window, controller);
if (window->window()->type() == Qt::Popup) {
QPoint transientPos = window->geometry().topLeft(); // this is absolute
QWaylandWindow *parent = window->transientParent();
if (parent && parent->decoration()) {
transientPos -= parent->geometry().topLeft();
transientPos.setX(transientPos.x() + parent->decoration()->margins().left());
transientPos.setY(transientPos.y() + parent->decoration()->margins().top());
}
QSize size = window->windowGeometry().size();
iviSurface->ivi_controller_surface::set_destination_rectangle(transientPos.x(),
transientPos.y(),
size.width(),
size.height());
}
return iviSurface;
}
}
QT_END_NAMESPACE