aboutsummaryrefslogtreecommitdiffstats
path: root/homescreen/src/homescreenhandler.cpp
blob: c44cbb95753127b5c09f268570cd559380fd5223 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/*
 * Copyright (c) 2017, 2018, 2019 TOYOTA MOTOR CORPORATION
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <QGuiApplication>
#include <QFileInfo>
#include "homescreenhandler.h"
#include <functional>
#include "hmi-debug.h"

#include <qpa/qplatformnativeinterface.h>

#define APPLAUNCH_DBUS_IFACE     "org.automotivelinux.AppLaunch"
#define APPLAUNCH_DBUS_OBJECT    "/org/automotivelinux/AppLaunch"
/* LAUNCHER_APP_ID shouldn't be started by applaunchd as it is started as a
 * user session by systemd */
#define LAUNCHER_APP_ID          "launcher"

void* HomescreenHandler::myThis = 0;

HomescreenHandler::HomescreenHandler(Shell *_aglShell, ApplicationLauncher *launcher, QObject *parent) :
    QObject(parent),
    aglShell(_aglShell)
{
    mp_launcher = launcher;
    applaunch_iface = new org::automotivelinux::AppLaunch(APPLAUNCH_DBUS_IFACE, APPLAUNCH_DBUS_OBJECT,
                                                          QDBusConnection::sessionBus(), this);
}

HomescreenHandler::~HomescreenHandler()
{
}

void HomescreenHandler::init(void)
{
    myThis = this;

    /*
     * The "started" signal is received any time a start request is made to applaunchd,
     * and the application either starts successfully or is already running. This
     * effectively acts as a "switch to app X" action.
     */
    connect(applaunch_iface, SIGNAL(started(QString)), this, SLOT(appStarted(QString)));
    connect(applaunch_iface, SIGNAL(terminated(QString)), this, SLOT(appTerminated(QString)));

}

static struct wl_output *
getWlOutput(QPlatformNativeInterface *native, QScreen *screen)
{
	void *output = native->nativeResourceForScreen("output", screen);
	return static_cast<struct ::wl_output*>(output);
}

void HomescreenHandler::tapShortcut(QString application_id)
{
    QDBusPendingReply<> reply;
    HMI_DEBUG("HomeScreen","tapShortcut %s", application_id.toStdString().c_str());

    if (application_id == LAUNCHER_APP_ID)
        goto activate_app;

    reply = applaunch_iface->start(application_id);
    reply.waitForFinished();

    if (reply.isError()) {
        HMI_ERROR("HomeScreen","Unable to start application '%s': %s",
            application_id.toStdString().c_str(),
            reply.error().message().toStdString().c_str());
        return;
    }

activate_app:
    if (mp_launcher) {
        mp_launcher->setCurrent(application_id);
    }
    appStarted(application_id);
}

/*
 * Keep track of currently running apps and the order in which
 * they were activated. That way, when an app is closed, we can
 * switch back to the previously active one.
 */
void HomescreenHandler::addAppToStack(const QString& application_id)
{
    if (application_id == "homescreen")
        return;

    if (!apps_stack.contains(application_id)) {
        apps_stack << application_id;
    } else {
        int current_pos = apps_stack.indexOf(application_id);
        int last_pos = apps_stack.size() - 1;

        if (current_pos != last_pos)
            apps_stack.move(current_pos, last_pos);
    }
}

void HomescreenHandler::appStarted(const QString& application_id)
{
    struct agl_shell *agl_shell = aglShell->shell.get();
    QPlatformNativeInterface *native = qApp->platformNativeInterface();
    struct wl_output *output = getWlOutput(native, qApp->screens().first());

    HMI_DEBUG("HomeScreen", "Activating application %s", application_id.toStdString().c_str());
    agl_shell_activate_app(agl_shell, application_id.toStdString().c_str(), output);
    addAppToStack(application_id);
}

void HomescreenHandler::appTerminated(const QString& application_id)
{
    HMI_DEBUG("HomeScreen", "Application %s terminated, activating last app", application_id.toStdString().c_str());
    if (apps_stack.contains(application_id)) {
        apps_stack.removeOne(application_id);
        if (!apps_stack.isEmpty())
            appStarted(apps_stack.last());
    }
}