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// Copyright (C) 2015 Green Hills Software
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qintegrityhidmanager.h"
#include <QList>
#include <QPoint>
#include <QGuiApplication>
#include <qpa/qwindowsysteminterface.h>
#include <device/hiddriver.h>
QT_BEGIN_NAMESPACE
class IntNotifier
{
static const Value ActivityPriority = 2;
protected:
Activity act;
public:
IntNotifier()
{
CheckSuccess(CreateActivity(CurrentTask(), ActivityPriority, false, (Value)this, &act));
};
~IntNotifier()
{
CheckSuccess(CloseActivity(act));
};
virtual void process_event() = 0;
virtual void async_wait() = 0;
};
class HIDDeviceHandler : IntNotifier
{
public:
HIDDeviceHandler(HIDDriver *hidd, HIDHandle hidh)
: driver(hidd), handle(hidh), currentPos(0, 0) { }
~HIDDeviceHandler()
{
CheckSuccess(gh_hid_close(handle));
};
void process_event(void) override;
void async_wait(void) override;
HIDDriver *get_driver(void) { return driver; };
HIDHandle get_handle(void) { return handle; };
private:
HIDDriver *driver;
HIDHandle handle;
QPoint currentPos;
Qt::MouseButtons buttons;
};
class HIDDriverHandler : IntNotifier
{
public:
HIDDriverHandler(HIDDriver *hidd) : IntNotifier(), driver(hidd) { }
~HIDDriverHandler()
{
qDeleteAll(devices);
};
void process_event(void) override;
void async_wait(void) override;
void find_devices(void);
private:
QHash<Value, HIDDeviceHandler *> devices;
HIDDriver *driver;
};
void HIDDriverHandler::process_event()
{
find_devices();
}
void HIDDriverHandler::async_wait()
{
gh_hid_wait_for_new_device(driver, act);
}
void HIDDriverHandler::find_devices()
{
Error err;
uintptr_t devicecontext;
uint32_t device_id;
HIDHandle handle;
HIDDeviceHandler *hidnot;
devicecontext = 0;
forever {
err = gh_hid_enum_devices(driver, &device_id, &devicecontext);
if (err == OperationNotImplemented)
break;
else if (err == Failure)
break;
if (!devices.contains(device_id)) {
err = gh_hid_init_device(driver, device_id, &handle);
if (err == Success) {
hidnot = new HIDDeviceHandler(driver, handle);
devices.insert(device_id, hidnot);
hidnot->async_wait();
}
}
}
if (err == OperationNotImplemented) {
/* fallback on legacy enumeration where we assume 0-based
* contiguous indexes */
device_id = 0;
err = Success;
do {
if (!devices.contains(device_id)) {
err = gh_hid_init_device(driver, device_id, &handle);
if (err != Success)
break;
hidnot = new HIDDeviceHandler(driver, handle);
devices.insert(device_id, hidnot);
hidnot->async_wait();
}
device_id++;
} while (err == Success);
}
async_wait();
}
void HIDDeviceHandler::process_event()
{
HIDEvent event;
uint32_t num_events = 1;
while (gh_hid_get_event(handle, &event, &num_events) == Success) {
if (event.type == HID_TYPE_AXIS) {
switch (event.index) {
case HID_AXIS_ABSX:
currentPos.setX(event.value);
break;
case HID_AXIS_ABSY:
currentPos.setY(event.value);
break;
case HID_AXIS_RELX:
currentPos.setX(currentPos.x() + event.value);
break;
case HID_AXIS_RELY:
currentPos.setY(currentPos.y() + event.value);
break;
default:
/* ignore the rest for now */
break;
}
} else if (event.type == HID_TYPE_KEY) {
switch (event.index) {
case HID_BUTTON_LEFT:
if (event.value)
buttons |= Qt::LeftButton;
else
buttons &= ~Qt::LeftButton;
break;
case HID_BUTTON_MIDDLE:
if (event.value)
buttons |= Qt::MiddleButton;
else
buttons &= ~Qt::MiddleButton;
break;
case HID_BUTTON_RIGHT:
if (event.value)
buttons |= Qt::RightButton;
else
buttons &= ~Qt::RightButton;
break;
default:
/* ignore the rest for now */
break;
}
} else if (event.type == HID_TYPE_SYNC) {
QWindowSystemInterface::handleMouseEvent(0, currentPos, currentPos, buttons,
QGuiApplication::keyboardModifiers());
} else if (event.type == HID_TYPE_DISCONNECT) {
/* FIXME */
}
}
async_wait();
}
void HIDDeviceHandler::async_wait()
{
CheckSuccess(gh_hid_async_wait_for_event(handle, act));
}
void QIntegrityHIDManager::open_devices()
{
HIDDriver *hidd;
uintptr_t context = 0;
HIDDriverHandler *hidnot;
while (gh_hid_enum_drivers(&hidd, &context) == Success) {
hidnot = new HIDDriverHandler(hidd);
m_drivers.append(hidnot);
hidnot->find_devices();
}
}
void QIntegrityHIDManager::run()
{
IntNotifier *notifier;
open_devices();
/* main loop */
forever {
WaitForActivity((Value *)¬ifier);
notifier->process_event();
}
}
QIntegrityHIDManager::QIntegrityHIDManager(const QString &key, const QString &spec, QObject *parent)
: QThread(parent)
{
start();
}
QIntegrityHIDManager::~QIntegrityHIDManager()
{
terminate();
qDeleteAll(m_drivers);
}
QT_END_NAMESPACE
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