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         QPlatformNativeInterface *native = qApp->platformNativeInterface();
  33
  34         //
  35         // The "started" event is received any time a start request is made to applaunchd,
  36         // and the application either starts successfully or is already running. This
  37         // effectively acts as a "switch to app X" action.
  38         //
  39         connect(mp_applauncher_client,
  40                 &AppLauncherClient::appStatusEvent,
  41                 this,
  42                 &HomescreenHandler::processAppStatusEvent);
  43 }
  44
  45 HomescreenHandler::~HomescreenHandler()
  46 {
  47         delete mp_applauncher_client;
  48 }
  49
  50 static struct wl_output *
  51 getWlOutput(QPlatformNativeInterface *native, QScreen *screen)
  52 {
  53         void *output = native->nativeResourceForScreen("output", screen);
  54         return static_cast<struct ::wl_output*>(output);
  55 }
  56
  57 void HomescreenHandler::tapShortcut(QString app_id)
  58 {
  59         HMI_DEBUG("HomeScreen","tapShortcut %s", app_id.toStdString().c_str());
  60
  61         if (app_id == LAUNCHER_APP_ID) {
  62                 activateApp(app_id);
  63                 return;
  64         }
  65
  66         if (!mp_applauncher_client->startApplication(app_id)) {
  67                 HMI_ERROR("HomeScreen","Unable to start application '%s'",
  68                           app_id.toStdString().c_str());
  69                 return;
  70         }
  71 }
  72
  73 /*
  74  * Keep track of currently running apps and the order in which
  75  * they were activated. That way, when an app is closed, we can
  76  * switch back to the previously active one.
  77  */
  78 void HomescreenHandler::addAppToStack(const QString& app_id)
  79 {
  80         if (app_id == "homescreen")
  81                 return;
  82
  83         if (!apps_stack.contains(app_id)) {
  84                 apps_stack << app_id;
  85         } else {
  86                 int current_pos = apps_stack.indexOf(app_id);
  87                 int last_pos = apps_stack.size() - 1;
  88
  89                 if (current_pos != last_pos)
  90                         apps_stack.move(current_pos, last_pos);
  91         }
  92 }
  93
  94 void HomescreenHandler::activateApp(const QString& app_id)
  95 {
  96         struct agl_shell *agl_shell = aglShell->shell.get();
  97         QPlatformNativeInterface *native = qApp->platformNativeInterface();
  98         struct wl_output *mm_output = getWlOutput(native, qApp->screens().first());
  99
 100         if (mp_launcher) {
 101                 mp_launcher->setCurrent(app_id);
 102         }
 103         HMI_DEBUG("HomeScreen", "Activating app_id %s by default output %p\n",
 104                         app_id.toStdString().c_str(), mm_output);
 105
 106         // search for a pending application which might have a different output
 107         auto iter = pending_app_list.begin();
 108         bool found_pending_app = false;
 109         while (iter != pending_app_list.end()) {
 110                 const QString &app_to_search = iter->first;
 111
 112                 if (app_to_search == app_id) {
 113                         found_pending_app = true;
 114                         break;
 115                 }
 116
 117                 iter++;
 118         }
 119
 120         if (found_pending_app) {
 121                 const QString &output_name = iter->second;
 122                 QScreen *screen =
 123                         ::find_screen(output_name.toStdString().c_str());
 124
 125                 mm_output = getWlOutput(native, screen);
 126                 pending_app_list.erase(iter);
 127
 128                 HMI_DEBUG("HomeScreen", "For application %s found another "
 129                                 "output to activate %s\n",
 130                                 app_id.toStdString().c_str(),
 131                                 output_name.toStdString().c_str());
 132         }
 133
 134         HMI_DEBUG("HomeScreen", "Activating application %s",
 135                         app_id.toStdString().c_str());
 136
 137         agl_shell_activate_app(agl_shell, app_id.toStdString().c_str(), mm_output);
 138 }
 139
 140 void HomescreenHandler::deactivateApp(const QString& app_id)
 141 {
 142         if (apps_stack.contains(app_id)) {
 143                 apps_stack.removeOne(app_id);
 144                 if (!apps_stack.isEmpty())
 145                         activateApp(apps_stack.last());
 146         }
 147 }
 148
 149 void HomescreenHandler::processAppStatusEvent(const QString &app_id, const QString &status)
 150 {
 151         HMI_DEBUG("HomeScreen", "Processing application %s, status %s",
 152                         app_id.toStdString().c_str(), status.toStdString().c_str());
 153
 154         if (status == "started") {
 155                 activateApp(app_id);
 156         } else if (status == "terminated") {
 157                 HMI_DEBUG("HomeScreen", "Application %s terminated, activating last app", app_id.toStdString().c_str());
 158                 deactivateApp(app_id);
 159         }
 160 }