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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
/*
Originally based on code from "platform/android/java_godot_lib_jni.cpp" from Godot Engine v4.0
Copyright (c) 2014-present Godot Engine contributors
Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.
*/
#include "androidjoystickinput.h"
#include <QtCore/qnativeinterface.h>
#include <QtUniversalInput/QUniversalInput>
using namespace QtJniTypes;
Q_DECLARE_JNI_CLASS(KeyEvent, "android/view/KeyEvent")
Q_DECLARE_JNI_CLASS(MotionEvent, "android/view/MotionEvent")
static void joyConnectionChanged(JNIEnv *, jclass, int deviceId, bool connected, jstring name)
{
QUniversalInput::instance()->updateJoyConnection(deviceId, connected, QJniObject(name).toString());
}
Q_DECLARE_JNI_NATIVE_METHOD(joyConnectionChanged)
static void joyButton(JNIEnv *, jclass, int deviceId, int button, bool pressed)
{
qDebug() << "joyButton" << deviceId << button << pressed;
QUniversalInput::instance()->joyButton(deviceId, JoyButton(button), pressed);
}
Q_DECLARE_JNI_NATIVE_METHOD(joyButton)
static void joyAxis(JNIEnv *, jclass, int deviceId, int axis, float value)
{
QUniversalInput::instance()->joyAxis(deviceId, JoyAxis(axis), value);
}
Q_DECLARE_JNI_NATIVE_METHOD(joyAxis)
static void joyHat(JNIEnv *, jclass, int deviceId, int hatX, int hatY)
{
HatMask hat = HatMask::Center;
if (hatX != 0) {
if (hatX < 0)
hat |= HatMask::Left;
else
hat |= HatMask::Right;
}
if (hatY != 0) {
if (hatY < 0)
hat |= HatMask::Up;
else
hat |= HatMask::Down;
}
QUniversalInput::instance()->joyHat(deviceId, hat);
}
Q_DECLARE_JNI_NATIVE_METHOD(joyHat)
QT_BEGIN_NAMESPACE
const char keyEventClass[] = "android/view/KeyEvent";
inline int keyField(const char *field)
{
return QJniObject::getStaticField<jint>(keyEventClass, field);
}
static void initJNI()
{
static bool initialized = false;
if (initialized)
return;
initialized = true;
qWarning() << "initJNI called in Qt Joystick Input Handler";
if (!QtJoystickInputHandler::registerNativeMethods({
Q_JNI_NATIVE_METHOD(joyConnectionChanged),
Q_JNI_NATIVE_METHOD(joyButton),
Q_JNI_NATIVE_METHOD(joyAxis),
Q_JNI_NATIVE_METHOD(joyHat)}))
qCritical("Failed to register native methods for QtJoystickInputHandler");
}
AndroidJoystickInput::AndroidJoystickInput()
{
initJNI();
m_qtJoystickInputHandler = QtJoystickInputHandler(QtAndroidPrivate::activity());
QtAndroidPrivate::registerGenericMotionEventListener(this);
QtAndroidPrivate::registerKeyEventListener(this);
start();
}
AndroidJoystickInput::~AndroidJoystickInput()
{
stop();
QtAndroidPrivate::unregisterGenericMotionEventListener(this);
QtAndroidPrivate::unregisterKeyEventListener(this);
}
bool AndroidJoystickInput::handleKeyEvent(jobject event)
{
static int ACTION_DOWN = keyField("ACTION_DOWN");
static int ACTION_UP = keyField("ACTION_UP");
QJniObject ev(event);
// Pass the event to the QtJoystickInputHandler Java class.
if (m_qtJoystickInputHandler.isValid()) {
const int keyCode = ev.callMethod<jint>("getKeyCode", "()I");
const int action = ev.callMethod<jint>("getAction", "()I");
if (action == ACTION_UP)
return m_qtJoystickInputHandler.callMethod<bool>("onKeyUp", keyCode, KeyEvent(event));
else if (action == ACTION_DOWN)
return m_qtJoystickInputHandler.callMethod<bool>("onKeyDown", keyCode, KeyEvent(event));
}
return false;
}
bool AndroidJoystickInput::handleGenericMotionEvent(jobject event)
{
if (m_qtJoystickInputHandler.isValid())
return m_qtJoystickInputHandler.callMethod<bool>("onGenericMotionEvent", MotionEvent(event));
return false;
}
void AndroidJoystickInput::start()
{
if (QtAndroidPrivate::androidSdkVersion() >= 16)
m_qtJoystickInputHandler.callMethod<void>("register", jlong(this));
}
void AndroidJoystickInput::stop()
{
if (QtAndroidPrivate::androidSdkVersion() >= 16)
m_qtJoystickInputHandler.callMethod<void>("unregister");
}
QT_END_NAMESPACE
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