citra_qt: add motion/touch config

src/citra_qt/CMakeLists.txt

@@ -39,6 +39,8 @@ add_executable(citra-qt
     configuration/configure_graphics.h
     configuration/configure_input.cpp
     configuration/configure_input.h
+    configuration/configure_motion_touch.cpp
+    configuration/configure_motion_touch.h
     configuration/configure_system.cpp
     configuration/configure_system.h
     configuration/configure_web.cpp
@@ -114,6 +116,7 @@ set(UIS
     configuration/configure_general.ui
     configuration/configure_graphics.ui
     configuration/configure_input.ui
+    configuration/configure_motion_touch.ui
     configuration/configure_system.ui
     configuration/configure_web.ui
     debugger/registers.ui

src/citra_qt/configuration/configure_input.cpp

@@ -9,6 +9,7 @@
 #include <QTimer>
 #include "citra_qt/configuration/config.h"
 #include "citra_qt/configuration/configure_input.h"
+#include "citra_qt/configuration/configure_motion_touch.h"
 #include "common/param_package.h"
 
 const std::array<std::string, ConfigureInput::ANALOG_SUB_BUTTONS_NUM>
@@ -159,6 +160,10 @@ ConfigureInput::ConfigureInput(QWidget* parent)
         });
     }
 
+    connect(ui->buttonMotionTouch, &QPushButton::released, [this] {
+        QDialog* motion_touch_dialog = new ConfigureMotionTouch(this);
+        return motion_touch_dialog->exec();
+    });
     connect(ui->buttonRestoreDefaults, &QPushButton::released, [this]() { restoreDefaults(); });
 
     timeout_timer->setSingleShot(true);

src/citra_qt/configuration/configure_input.ui

@@ -556,6 +556,34 @@
    </item>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QPushButton" name="buttonMotionTouch">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="sizeIncrement">
+        <size>
+         <width>0</width>
+         <height>0</height>
+        </size>
+       </property>
+       <property name="baseSize">
+        <size>
+         <width>0</width>
+         <height>0</height>
+        </size>
+       </property>
+       <property name="layoutDirection">
+        <enum>Qt::LeftToRight</enum>
+       </property>
+       <property name="text">
+        <string>Motion / Touch...</string>
+       </property>
+      </widget>
+     </item>
      <item>
       <spacer name="horizontalSpacer">
        <property name="orientation">

src/citra_qt/configuration/configure_motion_touch.cpp

@@ -0,0 +1,276 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <array>
+#include <QCloseEvent>
+#include <QLabel>
+#include <QMessageBox>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include "citra_qt/configuration/configure_motion_touch.h"
+#include "core/settings.h"
+#include "input_common/main.h"
+#include "ui_configure_motion_touch.h"
+
+CalibrationConfigurationDialog::CalibrationConfigurationDialog(QWidget* parent,
+                                                               const std::string& host, u16 port,
+                                                               u8 pad_index, u16 client_id)
+    : QDialog(parent) {
+    layout = new QVBoxLayout;
+    status_label = new QLabel(tr("Communicating with the server..."));
+    cancel_button = new QPushButton(tr("Cancel"));
+    connect(cancel_button, &QPushButton::clicked, this, [this] {
+        if (!completed)
+            job->Stop();
+        accept();
+    });
+    layout->addWidget(status_label);
+    layout->addWidget(cancel_button);
+    setLayout(layout);
+
+    using namespace InputCommon::CemuhookUDP;
+    job = std::move(std::make_unique<CalibrationConfigurationJob>(
+        host, port, pad_index, client_id,
+        [this](CalibrationConfigurationJob::Status status) {
+            QString text;
+            switch (status) {
+            case CalibrationConfigurationJob::Status::Ready:
+                text = tr("Touch the top left corner <br>of your touchpad.");
+                break;
+            case CalibrationConfigurationJob::Status::Stage1Completed:
+                text = tr("Now touch the bottom right corner <br>of your touchpad.");
+                break;
+            case CalibrationConfigurationJob::Status::Completed:
+                text = tr("Configuration completed!");
+                break;
+            }
+            QMetaObject::invokeMethod(this, "UpdateLabelText", Q_ARG(QString, text));
+            if (status == CalibrationConfigurationJob::Status::Completed) {
+                QMetaObject::invokeMethod(this, "UpdateButtonText", Q_ARG(QString, tr("OK")));
+            }
+        },
+        [this](u16 min_x_, u16 min_y_, u16 max_x_, u16 max_y_) {
+            completed = true;
+            min_x = min_x_;
+            min_y = min_y_;
+            max_x = max_x_;
+            max_y = max_y_;
+        }));
+}
+
+CalibrationConfigurationDialog::~CalibrationConfigurationDialog() = default;
+
+void CalibrationConfigurationDialog::UpdateLabelText(QString text) {
+    status_label->setText(text);
+}
+
+void CalibrationConfigurationDialog::UpdateButtonText(QString text) {
+    cancel_button->setText(text);
+}
+
+const std::array<std::pair<const char*, const char*>, 2> MotionProviders = {
+    {{"motion_emu", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "Mouse (Right Click)")},
+     {"cemuhookudp", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "CemuhookUDP")}}};
+
+const std::array<std::pair<const char*, const char*>, 2> TouchProviders = {
+    {{"emu_window", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "Emulator Window")},
+     {"cemuhookudp", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "CemuhookUDP")}}};
+
+ConfigureMotionTouch::ConfigureMotionTouch(QWidget* parent)
+    : QDialog(parent), ui(std::make_unique<Ui::ConfigureMotionTouch>()) {
+    ui->setupUi(this);
+    for (auto [provider, name] : MotionProviders) {
+        ui->motion_provider->addItem(tr(name), provider);
+    }
+    for (auto [provider, name] : TouchProviders) {
+        ui->touch_provider->addItem(tr(name), provider);
+    }
+
+    ui->udp_learn_more->setOpenExternalLinks(true);
+    ui->udp_learn_more->setText(
+        tr("<a "
+           "href='https://citra-emu.org/wiki/"
+           "using-a-controller-or-android-phone-for-motion-or-touch-input'><span "
+           "style=\"text-decoration: underline; color:#039be5;\">Learn More</span></a>"));
+
+    setConfiguration();
+    updateUiDisplay();
+    connectEvents();
+}
+
+ConfigureMotionTouch::~ConfigureMotionTouch() = default;
+
+void ConfigureMotionTouch::setConfiguration() {
+    Common::ParamPackage motion_param(Settings::values.motion_device);
+    Common::ParamPackage touch_param(Settings::values.touch_device);
+    std::string motion_engine = motion_param.Get("engine", "motion_emu");
+    std::string touch_engine = touch_param.Get("engine", "emu_window");
+
+    ui->motion_provider->setCurrentIndex(
+        ui->motion_provider->findData(QString::fromStdString(motion_engine)));
+    ui->touch_provider->setCurrentIndex(
+        ui->touch_provider->findData(QString::fromStdString(touch_engine)));
+    ui->motion_sensitivity->setValue(motion_param.Get("sensitivity", 0.01f));
+
+    min_x = touch_param.Get("min_x", 100);
+    min_y = touch_param.Get("min_y", 50);
+    max_x = touch_param.Get("max_x", 1800);
+    max_y = touch_param.Get("max_y", 850);
+
+    ui->udp_server->setText(QString::fromStdString(Settings::values.udp_input_address));
+    ui->udp_port->setText(QString::number(Settings::values.udp_input_port));
+    ui->udp_pad_index->setCurrentIndex(Settings::values.udp_pad_index);
+}
+
+void ConfigureMotionTouch::updateUiDisplay() {
+    std::string motion_engine = ui->motion_provider->currentData().toString().toStdString();
+    std::string touch_engine = ui->touch_provider->currentData().toString().toStdString();
+
+    if (motion_engine == "motion_emu") {
+        ui->motion_sensitivity_label->setVisible(true);
+        ui->motion_sensitivity->setVisible(true);
+    } else {
+        ui->motion_sensitivity_label->setVisible(false);
+        ui->motion_sensitivity->setVisible(false);
+    }
+
+    if (touch_engine == "cemuhookudp") {
+        ui->touch_calibration->setVisible(true);
+        ui->touch_calibration_config->setVisible(true);
+        ui->touch_calibration_label->setVisible(true);
+        ui->touch_calibration->setText(QString("(%1, %2) - (%3, %4)")
+                                           .arg(QString::number(min_x), QString::number(min_y),
+                                                QString::number(max_x), QString::number(max_y)));
+    } else {
+        ui->touch_calibration->setVisible(false);
+        ui->touch_calibration_config->setVisible(false);
+        ui->touch_calibration_label->setVisible(false);
+    }
+
+    if (motion_engine == "cemuhookudp" || touch_engine == "cemuhookudp") {
+        ui->udp_config_group_box->setVisible(true);
+    } else {
+        ui->udp_config_group_box->setVisible(false);
+    }
+}
+
+void ConfigureMotionTouch::connectEvents() {
+    connect(ui->motion_provider,
+            static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this,
+            [this](int index) { updateUiDisplay(); });
+    connect(ui->touch_provider,
+            static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this,
+            [this](int index) { updateUiDisplay(); });
+    connect(ui->udp_test, &QPushButton::clicked, this, &ConfigureMotionTouch::OnCemuhookUDPTest);
+    connect(ui->touch_calibration_config, &QPushButton::clicked, this,
+            &ConfigureMotionTouch::OnConfigureTouchCalibration);
+    connect(ui->buttonBox, &QDialogButtonBox::rejected, this, [this] {
+        if (CanCloseDialog())
+            reject();
+    });
+}
+
+void ConfigureMotionTouch::OnCemuhookUDPTest() {
+    ui->udp_test->setEnabled(false);
+    ui->udp_test->setText(tr("Testing"));
+    udp_test_in_progress = true;
+    InputCommon::CemuhookUDP::TestCommunication(
+        ui->udp_server->text().toStdString(), static_cast<u16>(ui->udp_port->text().toInt()),
+        static_cast<u8>(ui->udp_pad_index->currentIndex()), 24872,
+        [this] {
+            LOG_INFO(Frontend, "UDP input test success");
+            QMetaObject::invokeMethod(this, "ShowUDPTestResult", Q_ARG(bool, true));
+        },
+        [this] {
+            LOG_ERROR(Frontend, "UDP input test failed");
+            QMetaObject::invokeMethod(this, "ShowUDPTestResult", Q_ARG(bool, false));
+        });
+}
+
+void ConfigureMotionTouch::OnConfigureTouchCalibration() {
+    ui->touch_calibration_config->setEnabled(false);
+    ui->touch_calibration_config->setText(tr("Configuring"));
+    CalibrationConfigurationDialog* dialog = new CalibrationConfigurationDialog(
+        this, ui->udp_server->text().toStdString(), static_cast<u16>(ui->udp_port->text().toUInt()),
+        static_cast<u8>(ui->udp_pad_index->currentIndex()), 24872);
+    dialog->exec();
+    if (dialog->completed) {
+        min_x = dialog->min_x;
+        min_y = dialog->min_y;
+        max_x = dialog->max_x;
+        max_y = dialog->max_y;
+        LOG_INFO(Frontend,
+                 "UDP touchpad calibration config success: min_x={}, min_y={}, max_x={}, max_y={}",
+                 min_x, min_y, max_x, max_y);
+        updateUiDisplay();
+    } else {
+        LOG_ERROR(Frontend, "UDP touchpad calibration config failed");
+    }
+    ui->touch_calibration_config->setEnabled(true);
+    ui->touch_calibration_config->setText(tr("Configure"));
+}
+
+void ConfigureMotionTouch::closeEvent(QCloseEvent* event) {
+    if (CanCloseDialog())
+        event->accept();
+    else
+        event->ignore();
+}
+
+void ConfigureMotionTouch::ShowUDPTestResult(bool result) {
+    udp_test_in_progress = false;
+    if (result) {
+        QMessageBox::information(this, tr("Test Successful"),
+                                 tr("Successfully received data from the server."));
+    } else {
+        QMessageBox::warning(this, tr("Test Failed"),
+                             tr("Could not receive valid data from the server.<br>Please verify "
+                                "that the server is set up correctly and "
+                                "the address and port are correct."));
+    }
+    ui->udp_test->setEnabled(true);
+    ui->udp_test->setText(tr("Test"));
+}
+
+bool ConfigureMotionTouch::CanCloseDialog() {
+    if (udp_test_in_progress) {
+        QMessageBox::warning(this, tr("Citra"),
+                             tr("UDP Test or calibration configuration is in progress.<br>Please "
+                                "wait for them to finish."));
+        return false;
+    }
+    return true;
+}
+
+void ConfigureMotionTouch::applyConfiguration() {
+    if (!CanCloseDialog())
+        return;
+
+    std::string motion_engine = ui->motion_provider->currentData().toString().toStdString();
+    std::string touch_engine = ui->touch_provider->currentData().toString().toStdString();
+
+    Common::ParamPackage motion_param{}, touch_param{};
+    motion_param.Set("engine", motion_engine);
+    touch_param.Set("engine", touch_engine);
+
+    if (motion_engine == "motion_emu") {
+        motion_param.Set("sensitivity", static_cast<float>(ui->motion_sensitivity->value()));
+    }
+
+    if (touch_engine == "cemuhookudp") {
+        touch_param.Set("min_x", min_x);
+        touch_param.Set("min_y", min_y);
+        touch_param.Set("max_x", max_x);
+        touch_param.Set("max_y", max_y);
+    }
+
+    Settings::values.motion_device = motion_param.Serialize();
+    Settings::values.touch_device = touch_param.Serialize();
+    Settings::values.udp_input_address = ui->udp_server->text().toStdString();
+    Settings::values.udp_input_port = static_cast<u16>(ui->udp_port->text().toInt());
+    Settings::values.udp_pad_index = static_cast<u8>(ui->udp_pad_index->currentIndex());
+    InputCommon::ReloadInputDevices();
+
+    accept();
+}

src/citra_qt/configuration/configure_motion_touch.h

@@ -0,0 +1,72 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <QDialog>
+#include "common/param_package.h"
+#include "input_common/udp/udp.h"
+
+class QVBoxLayout;
+class QLabel;
+class QPushButton;
+
+namespace Ui {
+class ConfigureMotionTouch;
+}
+
+/// A dialog for touchpad calibration configuration.
+class CalibrationConfigurationDialog : public QDialog {
+    Q_OBJECT
+public:
+    explicit CalibrationConfigurationDialog(QWidget* parent, const std::string& host, u16 port,
+                                            u8 pad_index, u16 client_id);
+    ~CalibrationConfigurationDialog();
+
+private:
+    Q_INVOKABLE void UpdateLabelText(QString text);
+    Q_INVOKABLE void UpdateButtonText(QString text);
+
+    QVBoxLayout* layout;
+    QLabel* status_label;
+    QPushButton* cancel_button;
+    std::unique_ptr<InputCommon::CemuhookUDP::CalibrationConfigurationJob> job;
+
+    // Configuration results
+    bool completed{};
+    u16 min_x, min_y, max_x, max_y;
+
+    friend class ConfigureMotionTouch;
+};
+
+class ConfigureMotionTouch : public QDialog {
+    Q_OBJECT
+
+public:
+    explicit ConfigureMotionTouch(QWidget* parent = nullptr);
+    ~ConfigureMotionTouch();
+
+public slots:
+    void applyConfiguration();
+
+private slots:
+    void OnCemuhookUDPTest();
+    void OnConfigureTouchCalibration();
+
+private:
+    void closeEvent(QCloseEvent* event) override;
+    Q_INVOKABLE void ShowUDPTestResult(bool result);
+    void setConfiguration();
+    void updateUiDisplay();
+    void connectEvents();
+    bool CanCloseDialog();
+
+    std::unique_ptr<Ui::ConfigureMotionTouch> ui;
+
+    // Coordinate system of the CemuhookUDP touch provider
+    int min_x, min_y, max_x, max_y;
+
+    bool udp_test_in_progress{};
+};

src/citra_qt/configuration/configure_motion_touch.ui

@@ -0,0 +1,294 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>ConfigureMotionTouch</class>
+ <widget class="QDialog" name="ConfigureMotionTouch">
+  <property name="windowTitle">
+   <string>Configure Motion / Touch</string>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>500</width>
+    <height>450</height>
+   </rect>
+  </property>
+  <layout class="QVBoxLayout">
+   <item>
+    <widget class="QGroupBox" name="motion_group_box">
+     <property name="title">
+      <string>Motion</string>
+     </property>
+     <layout class="QVBoxLayout">
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <widget class="QLabel" name="motion_provider_label">
+          <property name="text">
+           <string>Motion Provider:</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QComboBox" name="motion_provider"/>
+        </item>
+       </layout>
+      </item>
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <widget class="QLabel" name="motion_sensitivity_label">
+          <property name="text">
+           <string>Sensitivity:</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QDoubleSpinBox" name="motion_sensitivity">
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+          <property name="decimals">
+           <number>4</number>
+          </property>
+          <property name="minimum">
+           <double>0.010000000000000</double>
+          </property>
+          <property name="maximum">
+           <double>10.000000000000000</double>
+          </property>
+          <property name="singleStep">
+           <double>0.001000000000000</double>
+          </property>
+          <property name="value">
+           <double>0.010000000000000</double>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
+    <widget class="QGroupBox" name="touch_group_box">
+     <property name="title">
+      <string>Touch</string>
+     </property>
+     <layout class="QVBoxLayout">
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <widget class="QLabel" name="touch_provider_label">
+          <property name="text">
+           <string>Touch Provider:</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QComboBox" name="touch_provider"/>
+        </item>
+       </layout>
+      </item>
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <widget class="QLabel" name="touch_calibration_label">
+          <property name="text">
+           <string>Calibration:</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QLabel" name="touch_calibration">
+          <property name="text">
+           <string>(100, 50) - (1800, 850)</string>
+          </property>
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QPushButton" name="touch_calibration_config">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="text">
+           <string>Configure</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
+    <widget class="QGroupBox" name="udp_config_group_box">
+     <property name="title">
+      <string>CemuhookUDP Config</string>
+     </property>
+     <layout class="QVBoxLayout">
+      <item>
+       <widget class="QLabel" name="udp_help">
+        <property name="text">
+         <string>You may use any Cemuhook compatible UDP input source to provide motion and touch input.</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
+        </property>
+        <property name="wordWrap">
+         <bool>true</bool>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <widget class="QLabel" name="udp_server_label">
+          <property name="text">
+           <string>Server:</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QLineEdit" name="udp_server">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <widget class="QLabel" name="udp_port_label">
+          <property name="text">
+           <string>Port:</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QLineEdit" name="udp_port">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <widget class="QLabel" name="udp_pad_index_label">
+          <property name="text">
+           <string>Pad:</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QComboBox" name="udp_pad_index">
+          <item>
+           <property name="text">
+            <string>Pad 1</string>
+           </property>
+          </item>
+          <item>
+           <property name="text">
+            <string>Pad 2</string>
+           </property>
+          </item>
+          <item>
+           <property name="text">
+            <string>Pad 3</string>
+           </property>
+          </item>
+          <item>
+           <property name="text">
+            <string>Pad 4</string>
+           </property>
+          </item>
+         </widget>
+        </item>
+       </layout>
+      </item>
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <widget class="QLabel" name="udp_learn_more">
+          <property name="text">
+           <string>Learn More</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QPushButton" name="udp_test">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="text">
+           <string>Test</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
+    <spacer>
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>167</width>
+       <height>55</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>ConfigureMotionTouch</receiver>
+   <slot>applyConfiguration()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>220</x>
+     <y>380</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>220</x>
+     <y>200</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>