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         ApplicationLauncher *launcher;
  53 };
  54
  55 static void
  56 application_id_event(void *data, struct agl_shell_desktop *agl_shell_desktop,
  57                      const char *app_id)
  58 {
  59         // this event is sent  only when surfaces are being created.  we call
  60         // setCurrent() to take care of this the first time, with later state
  61         // event changes being handled by the application_state_event()
  62         struct shell_container *sc = static_cast<struct shell_container *>(data);
  63         sc->launcher->setCurrent(QString(app_id));
  64 }
  65
  66 static void
  67 application_state_event(void *data, struct agl_shell_desktop *agl_shell_desktop,
  68                         const char *app_id, const char *app_data,
  69                         uint32_t app_state, uint32_t app_role)
  70 {
  71         struct shell_container *sc = static_cast<struct shell_container *>(data);
  72         sc->launcher->setCurrent(QString(app_id));
  73 }
  74
  75 static const struct agl_shell_desktop_listener agl_shell_desktop_listener = {
  76         application_id_event,
  77         application_state_event,
  78 };
  79
  80
  81 static void
  82 global_add(void *data, struct wl_registry *reg, uint32_t name,
  83            const char *interface, uint32_t version)
  84 {
  85         struct shell_container *sc = static_cast<struct shell_container *>(data);
  86
  87         if (strcmp(interface, agl_shell_interface.name) == 0) {
  88                 sc->agl_shell = static_cast<struct agl_shell *>(
  89                         wl_registry_bind(reg, name, &agl_shell_interface, 1)
  90                 );
  91         } else if (strcmp(interface, agl_shell_desktop_interface.name) == 0) {
  92                 sc->agl_shell_desktop = static_cast<struct agl_shell_desktop *>(
  93                         wl_registry_bind(reg, name, &agl_shell_desktop_interface, 1)
  94                 );
  95
  96                 agl_shell_desktop_add_listener(sc->agl_shell_desktop,
  97                                                &agl_shell_desktop_listener, sc);
  98         }
  99 }
 100
 101 static void
 102 global_remove(void *data, struct wl_registry *reg, uint32_t id)
 103 {
 104         /* Don't care */
 105         (void) data;
 106         (void) reg;
 107         (void) id;
 108 }
 109
 110 static const struct wl_registry_listener registry_listener = {
 111         global_add,
 112         global_remove,
 113 };
 114
 115 static struct wl_surface *
 116 getWlSurface(QPlatformNativeInterface *native, QWindow *window)
 117 {
 118         void *surf = native->nativeResourceForWindow("surface", window);
 119         return static_cast<struct ::wl_surface *>(surf);
 120 }
 121
 122 static struct wl_output *
 123 getWlOutput(QPlatformNativeInterface *native, QScreen *screen)
 124 {
 125         void *output = native->nativeResourceForScreen("output", screen);
 126         return static_cast<struct ::wl_output*>(output);
 127 }
 128
 129
 130 static struct shell_container *
 131 register_agl_shell(QPlatformNativeInterface *native)
 132 {
 133         struct wl_display *wl;
 134         struct wl_registry *registry;
 135         struct shell_container *sc = new shell_container();
 136
 137         wl = static_cast<struct wl_display *>(
 138                         native->nativeResourceForIntegration("display")
 139         );
 140         registry = wl_display_get_registry(wl);
 141
 142         wl_registry_add_listener(registry, &registry_listener, sc);
 143
 144         /* Roundtrip to get all globals advertised by the compositor */
 145         wl_display_roundtrip(wl);
 146         wl_registry_destroy(registry);
 147
 148         if (!sc->agl_shell) {
 149                 delete sc;
 150         }
 151
 152         if (!sc->agl_shell_desktop) {
 153                 delete sc;
 154         }
 155
 156         return sc;
 157 }
 158
 159 static struct wl_surface *
 160 create_component(QPlatformNativeInterface *native, QQmlComponent *comp,
 161                  QScreen *screen, QObject **qobj)
 162 {
 163         QObject *obj = comp->create();
 164         obj->setParent(screen);
 165
 166         QWindow *win = qobject_cast<QWindow *>(obj);
 167         *qobj = obj;
 168
 169         return getWlSurface(native, win);
 170 }
 171
 172 static QScreen *
 173 find_screen(const char *screen_name)
 174 {
 175         QList<QScreen *> screens = qApp->screens();
 176         QScreen *found = nullptr;
 177         QString qstr_name = QString::fromUtf8(screen_name, -1);
 178
 179         for (QScreen *xscreen : screens) {
 180                 if (qstr_name == xscreen->name()) {
 181                         found = xscreen;
 182                         break;
 183                 }
 184         }
 185
 186         return found;
 187 }
 188
 189 static void
 190 load_agl_shell_app(QPlatformNativeInterface *native,
 191                    QQmlApplicationEngine *engine,
 192                    struct shell_container *sc, QUrl &bindingAddress,
 193                    const char *screen_name)
 194 {
 195         struct wl_surface *bg, *top, *bottom;
 196         struct wl_output *output;
 197         QObject *qobj_bg, *qobj_top, *qobj_bottom;
 198         QScreen *screen = nullptr;
 199         struct agl_shell *agl_shell = sc->agl_shell;
 200
 201         QQmlComponent bg_comp(engine, QUrl("qrc:/background.qml"));
 202         qInfo() << bg_comp.errors();
 203
 204         QQmlComponent top_comp(engine, QUrl("qrc:/toppanel.qml"));
 205         qInfo() << top_comp.errors();
 206
 207         QQmlComponent bot_comp(engine, QUrl("qrc:/bottompanel.qml"));
 208         qInfo() << bot_comp.errors();
 209
 210         if (!screen_name)
 211                 screen = qApp->primaryScreen();
 212         else
 213                 screen = find_screen(screen_name);
 214
 215         qDebug() << "found primary screen " << qApp->primaryScreen()->name() <<
 216                 "first screen " << qApp->screens().first()->name();
 217         output = getWlOutput(native, screen);
 218
 219         top = create_component(native, &top_comp, screen, &qobj_top);
 220         bottom = create_component(native, &bot_comp, screen, &qobj_bottom);
 221         bg = create_component(native, &bg_comp, screen, &qobj_bg);
 222
 223         /* engine.rootObjects() works only if we had a load() */
 224         StatusBarModel *statusBar = qobj_top->findChild<StatusBarModel *>("statusBar");
 225         if (statusBar) {
 226                 qDebug() << "got statusBar objectname, doing init()";
 227                 statusBar->init(bindingAddress, engine->rootContext());
 228         }
 229
 230         agl_shell_set_panel(agl_shell, top, output, AGL_SHELL_EDGE_TOP);
 231         agl_shell_set_panel(agl_shell, bottom, output, AGL_SHELL_EDGE_BOTTOM);
 232         qDebug() << "Setting homescreen to screen  " << screen->name();
 233
 234         agl_shell_set_background(agl_shell, bg, output);
 235
 236         /* Delay the ready signal until after Qt has done all of its own setup
 237          * in a.exec() */
 238         QTimer::singleShot(500, [agl_shell](){
 239                 agl_shell_ready(agl_shell);
 240         });
 241 }
 242
 243 int main(int argc, char *argv[])
 244 {
 245     setenv("QT_QPA_PLATFORM", "wayland", 1);
 246     QGuiApplication a(argc, argv);
 247     const char *screen_name;
 248     int ret;
 249
 250     QPlatformNativeInterface *native = qApp->platformNativeInterface();
 251     struct shell_container *sc = nullptr;
 252     screen_name = getenv("HOMESCREEN_START_SCREEN");
 253
 254     QCoreApplication::setOrganizationDomain("LinuxFoundation");
 255     QCoreApplication::setOrganizationName("AutomotiveGradeLinux");
 256     QCoreApplication::setApplicationName("HomeScreen");
 257     QCoreApplication::setApplicationVersion("0.7.0");
 258     /* we need to have an app_id */
 259     a.setDesktopFileName("homescreen");
 260
 261     QCommandLineParser parser;
 262     parser.addPositionalArgument("port", a.translate("main", "port for binding"));
 263     parser.addPositionalArgument("secret", a.translate("main", "secret for binding"));
 264     parser.addHelpOption();
 265     parser.addVersionOption();
 266     parser.process(a);
 267     QStringList positionalArguments = parser.positionalArguments();
 268
 269     int port = 1700;
 270     QString token = "wm";
 271     QString graphic_role = "homescreen"; // defined in layers.json in Window Manager
 272
 273     if (positionalArguments.length() == 2) {
 274         port = positionalArguments.takeFirst().toInt();
 275         token = positionalArguments.takeFirst();
 276     }
 277
 278     HMI_DEBUG("HomeScreen","port = %d, token = %s", port, token.toStdString().c_str());
 279     ApplicationLauncher *launcher = new ApplicationLauncher();
 280
 281     sc = register_agl_shell(native);
 282     if (!sc) {
 283             exit(EXIT_FAILURE);
 284     }
 285
 286     std::shared_ptr<struct agl_shell>
 287             shell{sc->agl_shell, agl_shell_destroy};
 288     std::shared_ptr<struct agl_shell_desktop>
 289             shell_desktop{sc->agl_shell_desktop, agl_shell_desktop_destroy};
 290     Shell *aglShell = new Shell(shell, shell_desktop, &a);
 291     sc->a_shell = aglShell;
 292     sc->launcher = launcher;
 293
 294     // import C++ class to QML
 295     // qmlRegisterType<ApplicationLauncher>("HomeScreen", 1, 0, "ApplicationLauncher");
 296     qmlRegisterType<StatusBarModel>("HomeScreen", 1, 0, "StatusBarModel");
 297     qmlRegisterType<MasterVolume>("MasterVolume", 1, 0, "MasterVolume");
 298     qmlRegisterUncreatableType<ChromeController>("SpeechChrome", 1, 0, "SpeechChromeController",
 299                                                  QLatin1String("SpeechChromeController is uncreatable."));
 300
 301
 302     HomescreenHandler* homescreenHandler = new HomescreenHandler(aglShell, launcher);
 303     homescreenHandler->init(port, token.toStdString().c_str());
 304
 305     QUrl bindingAddress;
 306     bindingAddress.setScheme(QStringLiteral("ws"));
 307     bindingAddress.setHost(QStringLiteral("localhost"));
 308     bindingAddress.setPort(port);
 309     bindingAddress.setPath(QStringLiteral("/api"));
 310
 311     QUrlQuery query;
 312     query.addQueryItem(QStringLiteral("token"), token);
 313     bindingAddress.setQuery(query);
 314
 315     QQmlApplicationEngine engine;
 316     QQmlContext *context = engine.rootContext();
 317     context->setContextProperty("bindingAddress", bindingAddress);
 318
 319     context->setContextProperty("homescreenHandler", homescreenHandler);
 320     context->setContextProperty("launcher", launcher);
 321     context->setContextProperty("weather", new Weather(bindingAddress));
 322     context->setContextProperty("bluetooth", new Bluetooth(bindingAddress, context));
 323     context->setContextProperty("speechChromeController", new ChromeController(bindingAddress, &engine));
 324     // we add it here even if we don't use it
 325     context->setContextProperty("shell", aglShell);
 326
 327     /* instead of loading main.qml we load one-by-one each of the QMLs,
 328      * divided now between several surfaces: panels, background.
 329      */
 330     load_agl_shell_app(native, &engine, sc, bindingAddress, screen_name);
 331
 332     ret = a.exec();
 333
 334     delete sc;
 335     return ret;
 336 }