homescreen/src/homescreenhandler.cpp

   1 // SPDX-License-Identifier: Apache-2.0
   2 /*
   3  * Copyright (c) 2017, 2018, 2019 TOYOTA MOTOR CORPORATION
   4  * Copyright (c) 2022 Konsulko Group
   5  */
   6
   7 #include <QGuiApplication>
   8 #include <QFileInfo>
   9 #include <functional>
  10
  11 #include "homescreenhandler.h"
  12 #include "hmi-debug.h"
  13
  14 QScreen *find_screen(const char *output);
  15
  16 // defined by meson build file
  17 #include QT_QPA_HEADER
  18
  19 // LAUNCHER_APP_ID shouldn't be started by applaunchd as it is started as
  20 // a user session by systemd
  21 #define LAUNCHER_APP_ID          "launcher"
  22
  23 static struct wl_output *
  24 getWlOutput(QPlatformNativeInterface *native, QScreen *screen);
  25
  26 HomescreenHandler::HomescreenHandler(Shell *_aglShell, ApplicationLauncher *launcher, QObject *parent) :
  27         QObject(parent),
  28         aglShell(_aglShell)
  29 {
  30         mp_launcher = launcher;
  31         mp_applauncher_client = new AppLauncherClient();
  32
  33         //
  34         // The "started" event is received any time a start request is made to applaunchd,
  35         // and the application either starts successfully or is already running. This
  36         // effectively acts as a "switch to app X" action.
  37         //
  38         connect(mp_applauncher_client,
  39                 &AppLauncherClient::appStatusEvent,
  40                 this,
  41                 &HomescreenHandler::processAppStatusEvent);
  42 }
  43
  44 HomescreenHandler::~HomescreenHandler()
  45 {
  46         delete mp_applauncher_client;
  47 }
  48
  49 static struct wl_output *
  50 getWlOutput(QPlatformNativeInterface *native, QScreen *screen)
  51 {
  52         void *output = native->nativeResourceForScreen("output", screen);
  53         return static_cast<struct ::wl_output*>(output);
  54 }
  55
  56 void HomescreenHandler::tapShortcut(QString app_id)
  57 {
  58         HMI_DEBUG("HomeScreen","tapShortcut %s", app_id.toStdString().c_str());
  59
  60         if (app_id == LAUNCHER_APP_ID) {
  61                 activateApp(app_id);
  62                 return;
  63         }
  64
  65         if (!mp_applauncher_client->startApplication(app_id)) {
  66                 HMI_ERROR("HomeScreen","Unable to start application '%s'",
  67                           app_id.toStdString().c_str());
  68                 return;
  69         }
  70 }
  71
  72 /*
  73  * Keep track of currently running apps and the order in which
  74  * they were activated. That way, when an app is closed, we can
  75  * switch back to the previously active one.
  76  */
  77 void HomescreenHandler::addAppToStack(const QString& app_id)
  78 {
  79         if (app_id == "homescreen")
  80                 return;
  81
  82         if (!apps_stack.contains(app_id)) {
  83                 apps_stack << app_id;
  84         } else {
  85                 int current_pos = apps_stack.indexOf(app_id);
  86                 int last_pos = apps_stack.size() - 1;
  87
  88                 if (current_pos != last_pos)
  89                         apps_stack.move(current_pos, last_pos);
  90         }
  91 }
  92
  93 void HomescreenHandler::activateApp(const QString& app_id)
  94 {
  95         struct agl_shell *agl_shell = aglShell->shell.get();
  96         QScreen *tmp_screen = qApp->screens().first();
  97         QPlatformNativeInterface *native = qApp->platformNativeInterface();
  98         struct wl_output *mm_output = nullptr;
  99
 100         if (!tmp_screen) {
 101                 HMI_DEBUG("HomeScreen", "No output found to activate on!\n");
 102         } else {
 103                 mm_output = getWlOutput(native, tmp_screen);
 104
 105                 HMI_DEBUG("HomeScreen", "Activating app_id %s by default on output %p\n",
 106                                 app_id.toStdString().c_str(), mm_output);
 107         }
 108
 109         if (mp_launcher) {
 110                 mp_launcher->setCurrent(app_id);
 111         }
 112
 113         // search for a pending application which might have a different output
 114         auto iter = pending_app_list.begin();
 115         bool found_pending_app = false;
 116         while (iter != pending_app_list.end()) {
 117                 const QString &app_to_search = iter->first;
 118
 119                 if (app_to_search == app_id) {
 120                         found_pending_app = true;
 121                         HMI_DEBUG("HomeScreen", "Found app_id %s in pending list  of applications",
 122                                         app_id.toStdString().c_str());
 123                         break;
 124                 }
 125
 126                 iter++;
 127         }
 128
 129         if (found_pending_app) {
 130                 const QString &output_name = iter->second;
 131                 QScreen *screen =
 132                         ::find_screen(output_name.toStdString().c_str());
 133
 134                 if (!screen) {
 135                         HMI_DEBUG("HomeScreen", "Can't activate application %s on another "
 136                                   "output, because output %s could not be found. "
 137                                   "Trying with remoting ones.",
 138                                   app_id.toStdString().c_str(),
 139                                   output_name.toStdString().c_str());
 140
 141                         // try with remoting-remote-X which is the streaming
 142                         // one
 143                         std::string new_remote_output =
 144                                 "remoting-" + output_name.toStdString();
 145
 146                         screen = ::find_screen(new_remote_output.c_str());
 147                         if (!screen) {
 148                                 HMI_DEBUG("HomeScreen", "Can't activate application %s on another "
 149                                           "output, because output remoting-%s could not be found",
 150                                           app_id.toStdString().c_str(),
 151                                           output_name.toStdString().c_str());
 152                                 return;
 153                         }
 154
 155                         HMI_DEBUG("HomeScreen", "Found a stream remoting output %s to activate application %s on",
 156                                   new_remote_output.c_str(),
 157                                   app_id.toStdString().c_str());
 158                 }
 159
 160                 mm_output = getWlOutput(native, screen);
 161                 pending_app_list.erase(iter);
 162
 163                 HMI_DEBUG("HomeScreen", "For application %s found another "
 164                                 "output to activate %s\n",
 165                                 app_id.toStdString().c_str(),
 166                                 output_name.toStdString().c_str());
 167         }
 168
 169         if (!mm_output) {
 170                 HMI_DEBUG("HomeScreen", "No suitable output found for activating %s",
 171                                 app_id.toStdString().c_str());
 172                 return;
 173         }
 174
 175         HMI_DEBUG("HomeScreen", "Activating application %s",
 176                         app_id.toStdString().c_str());
 177
 178         agl_shell_activate_app(agl_shell, app_id.toStdString().c_str(), mm_output);
 179 }
 180
 181 void HomescreenHandler::deactivateApp(const QString& app_id)
 182 {
 183         if (apps_stack.contains(app_id)) {
 184                 apps_stack.removeOne(app_id);
 185                 if (!apps_stack.isEmpty())
 186                         activateApp(apps_stack.last());
 187         }
 188 }
 189
 190 void HomescreenHandler::processAppStatusEvent(const QString &app_id, const QString &status)
 191 {
 192         HMI_DEBUG("HomeScreen", "Processing application %s, status %s",
 193                         app_id.toStdString().c_str(), status.toStdString().c_str());
 194
 195         if (status == "started") {
 196                 activateApp(app_id);
 197         } else if (status == "terminated") {
 198                 HMI_DEBUG("HomeScreen", "Application %s terminated, activating last app", app_id.toStdString().c_str());
 199                 deactivateApp(app_id);
 200         } else if (status == "deactivated") {
 201                 HMI_DEBUG("HomeScreen", "Application %s deactivated, activating last app", app_id.toStdString().c_str());
 202         }
 203 }