homescreen/src/main.cpp

   1 /*
   2  * Copyright (C) 2016, 2017 Mentor Graphics Development (Deutschland) GmbH
   3  * Copyright (c) 2017, 2018 TOYOTA MOTOR CORPORATION
   4  * Copyright (c) 2020 Collabora, Ltd.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *      http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18
  19 #include <QGuiApplication>
  20 #include <QCommandLineParser>
  21 #include <QtCore/QUrlQuery>
  22 #include <QtGui/QGuiApplication>
  23 #include <QtQml/QQmlApplicationEngine>
  24 #include <QtQml/QQmlContext>
  25 #include <QtQml/QQmlComponent>
  26 #include <QtQml/qqml.h>
  27 #include <QQuickWindow>
  28 #include <QTimer>
  29
  30 #include <weather.h>
  31 #include <bluetooth.h>
  32 #include "applicationlauncher.h"
  33 #include "statusbarmodel.h"
  34 #include "mastervolume.h"
  35 #include "homescreenhandler.h"
  36 #include "hmi-debug.h"
  37 #include "chromecontroller.h"
  38
  39 #include <qpa/qplatformnativeinterface.h>
  40 #include <wayland-client.h>
  41
  42 #include "wayland-agl-shell-client-protocol.h"
  43 #include "wayland-agl-shell-desktop-client-protocol.h"
  44 #include "shell.h"
  45
  46 struct shell_container {
  47         struct agl_shell *agl_shell;
  48         struct agl_shell_desktop *agl_shell_desktop;
  49         // used to propagate events from C/C++ event handlers from the protocol
  50         // to the QML in case we need them
  51         Shell *a_shell;
  52 };
  53
  54 static void
  55 application_id_event(void *data, struct agl_shell_desktop *agl_shell_desktop,
  56                 const char *app_id)
  57 {
  58 }
  59
  60 static void
  61 application_state_event(void *data, struct agl_shell_desktop *agl_shell_desktop,
  62                      const char *app_id, const char *app_data,
  63                      uint32_t app_state, uint32_t app_role)
  64 {
  65 }
  66
  67 static const struct agl_shell_desktop_listener agl_shell_desktop_listener = {
  68         application_id_event,
  69         application_state_event,
  70 };
  71
  72
  73 static void
  74 global_add(void *data, struct wl_registry *reg, uint32_t name,
  75            const char *interface, uint32_t version)
  76 {
  77         struct shell_container *sc = static_cast<struct shell_container *>(data);
  78
  79         if (strcmp(interface, agl_shell_interface.name) == 0) {
  80                 sc->agl_shell = static_cast<struct agl_shell *>(
  81                         wl_registry_bind(reg, name, &agl_shell_interface, 1)
  82                 );
  83         } else if (strcmp(interface, agl_shell_desktop_interface.name) == 0) {
  84                 sc->agl_shell_desktop = static_cast<struct agl_shell_desktop *>(
  85                         wl_registry_bind(reg, name, &agl_shell_desktop_interface, 1)
  86                 );
  87
  88                 agl_shell_desktop_add_listener(sc->agl_shell_desktop,
  89                                                &agl_shell_desktop_listener, sc);
  90         }
  91 }
  92
  93 static void
  94 global_remove(void *data, struct wl_registry *reg, uint32_t id)
  95 {
  96         /* Don't care */
  97         (void) data;
  98         (void) reg;
  99         (void) id;
 100 }
 101
 102 static const struct wl_registry_listener registry_listener = {
 103         global_add,
 104         global_remove,
 105 };
 106
 107 static struct wl_surface *
 108 getWlSurface(QPlatformNativeInterface *native, QWindow *window)
 109 {
 110         void *surf = native->nativeResourceForWindow("surface", window);
 111         return static_cast<struct ::wl_surface *>(surf);
 112 }
 113
 114 static struct wl_output *
 115 getWlOutput(QPlatformNativeInterface *native, QScreen *screen)
 116 {
 117         void *output = native->nativeResourceForScreen("output", screen);
 118         return static_cast<struct ::wl_output*>(output);
 119 }
 120
 121
 122 static struct shell_container *
 123 register_agl_shell(QPlatformNativeInterface *native)
 124 {
 125         struct wl_display *wl;
 126         struct wl_registry *registry;
 127         struct shell_container *sc = new shell_container();
 128
 129         wl = static_cast<struct wl_display *>(
 130                         native->nativeResourceForIntegration("display")
 131         );
 132         registry = wl_display_get_registry(wl);
 133
 134         wl_registry_add_listener(registry, &registry_listener, sc);
 135
 136         /* Roundtrip to get all globals advertised by the compositor */
 137         wl_display_roundtrip(wl);
 138         wl_registry_destroy(registry);
 139
 140         if (!sc->agl_shell) {
 141                 delete sc;
 142         }
 143
 144         if (!sc->agl_shell_desktop) {
 145                 delete sc;
 146         }
 147
 148         return sc;
 149 }
 150
 151 static struct wl_surface *
 152 create_component(QPlatformNativeInterface *native, QQmlComponent *comp,
 153                  QScreen *screen, QObject **qobj)
 154 {
 155         QObject *obj = comp->create();
 156         obj->setParent(screen);
 157
 158         QWindow *win = qobject_cast<QWindow *>(obj);
 159         *qobj = obj;
 160
 161         return getWlSurface(native, win);
 162 }
 163
 164 static QScreen *
 165 find_screen(const char *screen_name)
 166 {
 167         QList<QScreen *> screens = qApp->screens();
 168         QScreen *found = nullptr;
 169         QString qstr_name = QString::fromUtf8(screen_name, -1);
 170
 171         for (QScreen *xscreen : screens) {
 172                 if (qstr_name == xscreen->name()) {
 173                         found = xscreen;
 174                         break;
 175                 }
 176         }
 177
 178         return found;
 179 }
 180
 181 static void
 182 load_agl_shell_app(QPlatformNativeInterface *native,
 183                    QQmlApplicationEngine *engine,
 184                    struct shell_container *sc, QUrl &bindingAddress,
 185                    const char *screen_name)
 186 {
 187         struct wl_surface *bg, *top, *bottom;
 188         struct wl_output *output;
 189         QObject *qobj_bg, *qobj_top, *qobj_bottom;
 190         QScreen *screen = nullptr;
 191         struct agl_shell *agl_shell = sc->agl_shell;
 192
 193         QQmlComponent bg_comp(engine, QUrl("qrc:/background.qml"));
 194         qInfo() << bg_comp.errors();
 195
 196         QQmlComponent top_comp(engine, QUrl("qrc:/toppanel.qml"));
 197         qInfo() << top_comp.errors();
 198
 199         QQmlComponent bot_comp(engine, QUrl("qrc:/bottompanel.qml"));
 200         qInfo() << bot_comp.errors();
 201
 202         if (!screen_name)
 203                 screen = qApp->primaryScreen();
 204         else
 205                 screen = find_screen(screen_name);
 206
 207         qDebug() << "found primary screen " << qApp->primaryScreen()->name() <<
 208                 "first screen " << qApp->screens().first()->name();
 209         output = getWlOutput(native, screen);
 210
 211         top = create_component(native, &top_comp, screen, &qobj_top);
 212         bottom = create_component(native, &bot_comp, screen, &qobj_bottom);
 213         bg = create_component(native, &bg_comp, screen, &qobj_bg);
 214
 215         /* engine.rootObjects() works only if we had a load() */
 216         StatusBarModel *statusBar = qobj_top->findChild<StatusBarModel *>("statusBar");
 217         if (statusBar) {
 218                 qDebug() << "got statusBar objectname, doing init()";
 219                 statusBar->init(bindingAddress, engine->rootContext());
 220         }
 221
 222         agl_shell_set_panel(agl_shell, top, output, AGL_SHELL_EDGE_TOP);
 223         agl_shell_set_panel(agl_shell, bottom, output, AGL_SHELL_EDGE_BOTTOM);
 224         qDebug() << "Setting homescreen to screen  " << screen->name();
 225
 226         agl_shell_set_background(agl_shell, bg, output);
 227
 228         /* Delay the ready signal until after Qt has done all of its own setup
 229          * in a.exec() */
 230         QTimer::singleShot(500, [agl_shell](){
 231                 agl_shell_ready(agl_shell);
 232         });
 233 }
 234
 235 int main(int argc, char *argv[])
 236 {
 237     setenv("QT_QPA_PLATFORM", "wayland", 1);
 238     QGuiApplication a(argc, argv);
 239     const char *screen_name;
 240     int ret;
 241
 242     QPlatformNativeInterface *native = qApp->platformNativeInterface();
 243     struct shell_container *sc = nullptr;
 244     screen_name = getenv("HOMESCREEN_START_SCREEN");
 245
 246     QCoreApplication::setOrganizationDomain("LinuxFoundation");
 247     QCoreApplication::setOrganizationName("AutomotiveGradeLinux");
 248     QCoreApplication::setApplicationName("HomeScreen");
 249     QCoreApplication::setApplicationVersion("0.7.0");
 250     /* we need to have an app_id */
 251     a.setDesktopFileName("homescreen");
 252
 253     QCommandLineParser parser;
 254     parser.addPositionalArgument("port", a.translate("main", "port for binding"));
 255     parser.addPositionalArgument("secret", a.translate("main", "secret for binding"));
 256     parser.addHelpOption();
 257     parser.addVersionOption();
 258     parser.process(a);
 259     QStringList positionalArguments = parser.positionalArguments();
 260
 261     int port = 1700;
 262     QString token = "wm";
 263     QString graphic_role = "homescreen"; // defined in layers.json in Window Manager
 264
 265     if (positionalArguments.length() == 2) {
 266         port = positionalArguments.takeFirst().toInt();
 267         token = positionalArguments.takeFirst();
 268     }
 269
 270     HMI_DEBUG("HomeScreen","port = %d, token = %s", port, token.toStdString().c_str());
 271
 272     sc = register_agl_shell(native);
 273     if (!sc) {
 274             exit(EXIT_FAILURE);
 275     }
 276
 277     std::shared_ptr<struct agl_shell>
 278             shell{sc->agl_shell, agl_shell_destroy};
 279     std::shared_ptr<struct agl_shell_desktop>
 280             shell_desktop{sc->agl_shell_desktop, agl_shell_desktop_destroy};
 281     Shell *aglShell = new Shell(shell, shell_desktop, &a);
 282     sc->a_shell = aglShell;
 283
 284     // import C++ class to QML
 285     // qmlRegisterType<ApplicationLauncher>("HomeScreen", 1, 0, "ApplicationLauncher");
 286     qmlRegisterType<StatusBarModel>("HomeScreen", 1, 0, "StatusBarModel");
 287     qmlRegisterType<MasterVolume>("MasterVolume", 1, 0, "MasterVolume");
 288     qmlRegisterUncreatableType<ChromeController>("SpeechChrome", 1, 0, "SpeechChromeController",
 289                                                  QLatin1String("SpeechChromeController is uncreatable."));
 290
 291     ApplicationLauncher *launcher = new ApplicationLauncher();
 292
 293     HomescreenHandler* homescreenHandler = new HomescreenHandler(aglShell);
 294     homescreenHandler->init(port, token.toStdString().c_str());
 295
 296     QUrl bindingAddress;
 297     bindingAddress.setScheme(QStringLiteral("ws"));
 298     bindingAddress.setHost(QStringLiteral("localhost"));
 299     bindingAddress.setPort(port);
 300     bindingAddress.setPath(QStringLiteral("/api"));
 301
 302     QUrlQuery query;
 303     query.addQueryItem(QStringLiteral("token"), token);
 304     bindingAddress.setQuery(query);
 305
 306     QQmlApplicationEngine engine;
 307     QQmlContext *context = engine.rootContext();
 308     context->setContextProperty("bindingAddress", bindingAddress);
 309
 310     context->setContextProperty("homescreenHandler", homescreenHandler);
 311     context->setContextProperty("launcher", launcher);
 312     context->setContextProperty("weather", new Weather(bindingAddress));
 313     context->setContextProperty("bluetooth", new Bluetooth(bindingAddress, context));
 314     context->setContextProperty("speechChromeController", new ChromeController(bindingAddress, &engine));
 315     // we add it here even if we don't use it
 316     context->setContextProperty("shell", aglShell);
 317
 318     /* instead of loading main.qml we load one-by-one each of the QMLs,
 319      * divided now between several surfaces: panels, background.
 320      */
 321     load_agl_shell_app(native, &engine, sc, bindingAddress, screen_name);
 322
 323     ret = a.exec();
 324
 325     delete sc;
 326     return ret;
 327 }