pandemonium_engine/platform/android/java_pandemonium_view_wrapper.cpp

/*************************************************************************/
/*  java_pandemonium_view_wrapper.cpp                                    */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
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/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
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/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/*************************************************************************/

#include "java_pandemonium_view_wrapper.h"

PandemoniumJavaViewWrapper::PandemoniumJavaViewWrapper(jobject pandemonium_view) {
	JNIEnv *env = get_jni_env();
	ERR_FAIL_NULL(env);

	_pandemonium_view = env->NewGlobalRef(pandemonium_view);

	_cls = (jclass)env->NewGlobalRef(env->GetObjectClass(pandemonium_view));

	int android_device_api_level = android_get_device_api_level();
	if (android_device_api_level >= __ANDROID_API_N__) {
		_configure_pointer_icon = env->GetMethodID(_cls, "configurePointerIcon", "(ILjava/lang/String;FF)V");
		_set_pointer_icon = env->GetMethodID(_cls, "setPointerIcon", "(I)V");
	}
	if (android_device_api_level >= __ANDROID_API_O__) {
		_request_pointer_capture = env->GetMethodID(_cls, "requestPointerCapture", "()V");
		_release_pointer_capture = env->GetMethodID(_cls, "releasePointerCapture", "()V");
	}

	_can_capture_pointer = env->GetMethodID(_cls, "canCapturePointer", "()Z");
}

bool PandemoniumJavaViewWrapper::can_update_pointer_icon() const {
	return _configure_pointer_icon != nullptr && _set_pointer_icon != nullptr;
}

bool PandemoniumJavaViewWrapper::can_capture_pointer() const {
	// We can capture the pointer if the other jni capture method ids are initialized,
	// and PandemoniumView#canCapturePointer() returns true.
	if (_request_pointer_capture != nullptr && _release_pointer_capture != nullptr && _can_capture_pointer != nullptr) {
		JNIEnv *env = get_jni_env();
		ERR_FAIL_NULL_V(env, false);

		return env->CallBooleanMethod(_pandemonium_view, _can_capture_pointer);
	}

	return false;
}

void PandemoniumJavaViewWrapper::request_pointer_capture() {
	if (_request_pointer_capture != nullptr) {
		JNIEnv *env = get_jni_env();
		ERR_FAIL_NULL(env);

		env->CallVoidMethod(_pandemonium_view, _request_pointer_capture);
	}
}

void PandemoniumJavaViewWrapper::release_pointer_capture() {
	if (_release_pointer_capture != nullptr) {
		JNIEnv *env = get_jni_env();
		ERR_FAIL_NULL(env);

		env->CallVoidMethod(_pandemonium_view, _release_pointer_capture);
	}
}

void PandemoniumJavaViewWrapper::configure_pointer_icon(int pointer_type, const String &image_path, const Vector2 &p_hotspot) {
	if (_configure_pointer_icon != nullptr) {
		JNIEnv *env = get_jni_env();
		ERR_FAIL_NULL(env);

		jstring jImagePath = env->NewStringUTF(image_path.utf8().get_data());
		env->CallVoidMethod(_pandemonium_view, _configure_pointer_icon, pointer_type, jImagePath, p_hotspot.x, p_hotspot.y);
	}
}

void PandemoniumJavaViewWrapper::set_pointer_icon(int pointer_type) {
	if (_set_pointer_icon != nullptr) {
		JNIEnv *env = get_jni_env();
		ERR_FAIL_NULL(env);

		env->CallVoidMethod(_pandemonium_view, _set_pointer_icon, pointer_type);
	}
}

PandemoniumJavaViewWrapper::~PandemoniumJavaViewWrapper() {
	JNIEnv *env = get_jni_env();
	ERR_FAIL_NULL(env);

	env->DeleteGlobalRef(_pandemonium_view);
	env->DeleteGlobalRef(_cls);
}