**HomeScreen GUI Application / HomeScreen Service Guide**
====
-<div align="right">Revision: 0.1</div>
-<div align="right">TOYOTA MOTOR CORPORATION</div>
-<div align="right">Advanced Driver Information Technology</div>
-<div align="right">26th/Sep/2017</div>
+ Revision: 0.1
+ TOYOTA MOTOR CORPORATION
+ Advanced Driver Information Technology
+ 13th/May/2019
* * *
-<div id="Table\ of\ content"></div>
-
## Table of content
-- [Target reader of this document](#Target\ reader\ of\ this\ document)
-- [Overview](#Overview)
-- [Getting Start](#Getting\ Start)
- - [Supported environment](#Supported\ environment)
- - [Build](#Build)
- - [Configuring](#Configuring)
- - [How to call HomeScreen APIs from your Application?](#How\ to\ call\ HomeScreen\ APIs\ from\ your\ Application?)
-- [Supported usecase](#Supported\ usecase)
-- [Software Architecture](#Software\ Architecture)
-- [API reference](#API\ reference)
-- [Sequence](#Sequence)
- - [Initialize](#InitializeSequence)
- - [Tap Shortcut](#TapShortcutSequence)
- - [On Screen Message / Reply Sequence](#OnScreenMessageSequence)
-- [Sample code](#Sample\ code)
-- [Limitation](#Limitation)
-- [Next Plan](#Next\ Plan)
+- [Target reader of this document](#target-reader-of-this-document)
+- [Overview](#overview)
+- [Getting Start](#getting-start)
+ - [Supported environment](#supported-environment)
+ - [Build](#build)
+ - [Configuring](#configuring)
+ - [How to call HomeScreen APIs from your Application?](#how-to-call-homescreen-apis-from-your-application)
+- [Supported usecase](#supported-usecase)
+- [Software Architecture](#software-architecture)
+- [API reference](#api-reference)
+- [Sequence](#sequence)
+ - [Initialize](#initialize-sequence)
+ - [Tap Shortcut(deprecated)](#tap-shortcut-sequence)
+ - [ShowWindow](#showwindow-sequence)
+ - [On Screen Message / Reply Sequence(deprecated)](#on-screen-message-reply-sequence)
+ - [ShowOnscreen](#showonscreen-sequence)
+ - [ShowNotification](#shownotification-sequence)
+ - [ShowInformation](#showinformation-sequence)
+- [Sample code](#sample-code)
+- [Limitation](#limitation)
+- [Next Plan](#next-plan)
+- [Appendix](#appendix)
* * *
-<div id="Target\ reader\ of\ this\ document"></div>
-
## Target reader of this document
Application developer whose software uses HomeScreen.
* * *
-<div id="Overview"></div>
-
## Overview
HomeScreen is built with a GUI application created with Qt(referred as HomeScreenGUI), and a service running on afb-daemon (referred as HomeScreenBinder).
HomeScreen can start/switch applications run in AGL, also displays information such as onscreen messages.
You can find these projects in AGL gerrit.
-homescreen-2017(HomeScreenGUI):
- https://gerrit.automotivelinux.org/gerrit/#/admin/projects/staging/homescreen-2017
-agl-service-homescreen-2017(HomeScreenBinder's binding library):
- https://gerrit.automotivelinux.org/gerrit/#/admin/projects/apps/agl-service-homescreen-2017
-libhomescreen(library for application to communication with HomeScreenBinder):
- https://gerrit.automotivelinux.org/gerrit/#/admin/projects/src/libhomescreen
+- [homescreen(HomeScreenGUI)](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/apps/homescreen)
+- [launcher(LauncherGUI)](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/apps/launcher)
+- [agl-service-homescreen(HomeScreenBinder's binding library)](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/apps/agl-service-homescreen)
+- [libhomescreen(library for application to communication with HomeScreenBinder]( https://gerrit.automotivelinux.org/gerrit/#/admin/projects/src/libhomescreen)
+- [libqthomescreen(library for qt application to communication with HomeScreenBinder based on libhomescreen)](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/src/libqthomescreen)
Also HomeScreenGUI is using libwindowmanager.
-<div id="Getting\ Start"></div>
+* * *
## Getting Start
-<div id="Supported\ environment"></div>
-
### Supported environment
| Item | Description |
|:------------|:----------------------------------|
-| AGL version | Electric Eel |
+| AGL version | Grumpy Guppy |
| Hardware | Renesas R-Car Starter Kit Pro(M3) |
-<div id="Build"></div>
-
### Build
**Download recipe**
Then you can find the following recipes.
-* `meta-agl-devel/meta-hmi-framework/homescreen-2017`
+* `meta-agl-demo/recipes-demo-hmi/homescreen`
+
+* `meta-agl-devel/meta-hmi-framework/recipes-demo-hmi/launcher`
-* `meta-agl-devel/meta-hmi-framework/agl-service-homescreen-2017`
+* `meta-agl-demo/recipes-demo-hmi/agl-service-homescreen`
* `meta-agl-demo/recipes-demo-hmi/libhomescreen`
+* `meta-agl-devel/meta-hmi-framework/recipes-demo-hmi/qlibhomescreen`
+
**Bitbake**
$ bitbake agl-demo-platform
```
-
-* * *
-
-<div id="Configuring"></div>
-
### Configuring
To use HomeScreen API, an application shall paste the following configuration definition into "config.xml" of application.
```
<feature name="urn:AGL:widget:required-api">
<param name="homescreen" value="ws" />
+ <param name="windowmanager" value="ws" />
</feature>
```
-* * *
-
-<div id="How\ to\ call\ HomeScreen\ APIs\ from\ your\ Application?"></div>
-
### How to call HomeScreen APIs from your Application?
HomeScreen provides a library which is called "libhomescreen".
This library treats "json format" as API calling.
-For example, if an application wants to call "tap_shortcut()" API, the you should implement as below.
+For example, if an application wants to call "showWIndow()" API, then you should implement as below.
At first the application should create the instance of libhomescreen.
The port and token is provided by Application Framework
-Execute the "tapShortcut()" function.
+Execute the "showWindow()" function.
```
-libhs->tapShortcut("application_id");
+libhs->showWindow("application_id", "display_area");
```
-Regarding the detail of tap_shortcut() API, please refer [this](#HomeScreen\ API) section.
-The first parameter is the name of API, so in this case "tap_shortcut" is proper string.
-And the second parameter corresponds to arguments of "connect()" API.
-
-
-See also our [Sample code](#Sample\ code).
-
+Regarding the detail of showWindow() API, please refer [this](#homescreen-specific-api) section.
+The first parameter is the appid of application which want to display,liked "dashboard".
+And the second parameter corresponds to display_area which defined by windowmanager,usually "normal",
+so in this case "showWindow" the two parameters are proper string.
-<br />
+See also our [Sample code](#sample-code).
* * *
-<div id="Supported\ usecase"></div>
-
## Supported usecase
-1. HomeScreenGUI sending ShortCut Icon tapped event to applications
- - Applications using libhomescreen to subscribe the tapShortcut event,
- HomeScreenGUI will send ShortCut Icon tapped event to applications.
-2. Display OnScreen messages
+1. HomeScreenGUI sending showWindow event to applications
+ - Applications using libhomescreen to subscribe the showWindow event,
+ HomeScreenGUI will send showWindow event to applications.
+2. Display OnScreen messages(deprecated)
- Applications sending OnScreen messages to homescreen-service, and OnScreenAPP
will get these message and display.
-3. Get OnSreen Reply event
+3. Get OnSreen Reply event(deprecated)
- When OnScreen messages is displaying, OnScreenAPP will send a reply event to applications.
+4. Display OnScreen by showWindow
+ - When application who want to show OnScreen,it can call "showWindow",then OnScreenApp will
+ display request OnScreen.
+5. Hide OnScreen by hideWindow
+ - When application who want to hide OnScreen which is displaying,it can call "hideWindow",then OnScreenApp
+ will hide OnScreen.
+6. Send OnScreen Reply by replyShowWindow
+ - When user touch the button of OnScreen, OnScreenApp can call "relplyShowWindow" to send reply information
+ back to application.
+7. Show Notification on HomeScreenGUI
+ - When application who want to display a notification,it can call "showNotification",then HomeScreenGUI will
+ display the notification contents on the screen top area.
+8. Show Information on HomeScreenGUI
+ - When application who want to display a information,it can call "showInformation",then HomeScreenGUI will
+ display the information contents on the screen bottom area.
* * *
-<div id="Software\ Architecture"></div>
-
## Software Architecture
The architecture of HomeScreen is shown below.
HomeScreen is the service designed to be used by multiple applications.
Usually application side binder has some business logic for each application, so the number of binders depend on the number of applications which use HomeScreen.
On the other hand, regarding lower binder there is only one module in the system. This binder receives all messages from multiple applications (in detail, it comes from upper layer binder).
-The communication protocols between libhomescreen and upper binder, upper binder and lower binder, lower binder (homescreen-binding) are WebSocket.
+The communication protocols between libhomescreen and upper binder, upper binder and lower binder(homescreen-binding) are WebSocket.
* * *
-<div id="API%20reference"></div>
-
## API reference
-"libhomescreen" and "agl-service-homescreen-2017" provides several kinds of APIs.
-
-<div id="Home\ Screen\ Specific\ API"></div>
+"libhomescreen" and "agl-service-homescreen" provides several kinds of APIs.
### HomeScreen Specific API
-- [LibHomeScreen ()](api-ref/html/de/dd0/class_lib_home_screen.html#a724bd949c4154fad041f96a15ef0f5dc)
-- [init (const int port, const std::string &token)](api-ref/html/de/dd0/class_lib_home_screen.html#a6a57b573cc767725762ba9beab032220)
-- [tapShortcut(const char *application_id)](api-ref/html/de/dd0/class_lib_home_screen.html#afb571c9577087b47065eb23e7fdbc903)
-- [onScreenMessage(const char *display_message)](api-ref/html/de/dd0/class_lib_home_screen.html#ac336482036a72b51a822725f1929523c)
-- [onScreenReply(const char *reply_message)](api-ref/html/de/dd0/class_lib_home_screen.html#a6c065f41f2c5d1f58d2763bfb4da9c37)
-- [registerCallback (void(*event_cb)(const std::string &event, struct json_object *event_contents), void(*reply_cb)(struct json_object *reply_contents), void(*hangup_cb)(void)=nullptr)](api-ref/html/de/dd0/class_lib_home_screen.html#a2789e8a5372202cc36f48e71dbb9b7cf)
-- [set\_event\_handler(enum EventType et, handler_func f)](api-ref/html/de/dd0/class_lib_home_screen.html#ab1b0e08bf35415de9064afed899e9f85)
-- [call (const string& verb, struct json_object* arg)](api-ref/html/de/dd0/class_lib_home_screen.html#a527b49dcfe581be6275d0eb2236ba37f)
-- [call (const char* verb, struct json_object* arg)](api-ref/html/de/dd0/class_lib_home_screen.html#ab5e8e8ab7d53e0f114e9e907fcbb7643)
-- [subscribe (const string& event_name)](api-ref/html/de/dd0/class_lib_home_screen.html#aa4c189807b75d070f567967f0d690738)
-- [unsubscribe (const string& event_name)](api-ref/html/de/dd0/class_lib_home_screen.html#aac03a45cbd453ba69ddb00c1016930a6)
+- LibHomeScreen::init (const int port, const std::string &token)
+```
+ port [in] : This argument should be specified to the port number to be used for WebSocket
+ token [in] : This argument should be specified to the token to be used for WebSocket
-* * *
+ Create connection to homescreen-service by port and token which provided by
+ application framework. This API must be called before calling other api.
+```
+- LibHomeScreen::tapShortcut(const char *application_id)
+```
+ application_id [in] : Tapped application id (label)
+
+ This api is deprecated, recommend using showWindow.
+```
+- LibHomeScreen::onScreenMessage(const char *display_message)
+```
+ display_message [in] : message for display
-<div id="Sequence"></div>
+ This api is deprecated, recommend using showWindow/hideWindow to call onscreenapp.
+```
+- LibHomeScreen::onScreenReply(const char *reply_message)
+```
+ reply_message [in] : message for reply
-## Sequence
+ This api is deprecated, recommend using replyShowWindow.
+```
+- LibHomeScreen::registerCallback(void(*event_cb)(const std::string &event, struct json_object *event_contents), void(*reply_cb)(struct json_object *reply_contents), void(*hangup_cb)(void)=nullptr)
+```
+ event_cb [in] : This argument should be specified to the callback for subscribed event
+ reply_cb [in] : This argument should be specified to the reply callback for call function
+ hangup_cb [in] : This argument should be specified to the hangup callback for call function
-<div id="InitializeSequence"></div>
+ This api is deprecated, recommend using set_event_handler.
+```
+- LibHomeScreen::set_event_handler(enum EventType et, handler_func f)
+```
+ et [in] : event name
+ f [in] : event handler
+
+ Setting event handler for Homescreen-Service Event.
+```
+- LibHomeScreen::call(const string& verb, struct json_object* arg)
+- LibHomeScreen::call(const char* verb, struct json_object* arg)
+```
+ verb [in] : This argument should be specified to the API name (e.g. "tap_shortcut")
+ arg [in] : This argument should be specified to the argument of API.
+ And this argument expects JSON object
+
+ Call homescreen-service verb.
+```
+- LibHomeScreen::subscribe(const string& event_name)
+```
+ event_name [in] : This argument should be specified to the event name
+
+ Subscribe homescreen-service event. Deprecated, recommend using set_event_handler.
+```
+- LibHomeScreen::unsubscribe(const string& event_name)
+```
+ event_name [in] : This argument should be specified to the event name
+
+ Unsubscribe homescreen-service event. Deprecated, recommend using set_event_handler.
+```
+- LibHomeScreen::showWindow(const char* application_id, json_object* json)
+```
+ application_id [in] : This argument should be specified to the application's id
+ json [in] : This argument should be specified to the json parameters
+
+ Request to show the window of application_id, and set display area in json liked
+ {"area":"normal.full"}.
+```
+- LibHomeScreen::hideWindow(const char* application_id)
+```
+ application_id [in] : This argument should be specified to the application's id
+
+ Request to hide the window of application_id.
+```
+- LibHomeScreen::replyShowWindow(const char* application_id, json_object* json)
+```
+ application_id [in] : This argument should be specified to the onscreen reply to applilcation id
+ json [in] : This argument should be specified to the json parameters
+
+ Post reply information to who called showWindow.
+```
+- LibHomeScreen::showNotification(json_object* json)
+```
+ json [in] : This argument should be specified to the json parameters.
+
+ Post Notification to Homescreen which will display at top area of Homescreen.
+```
+- LibHomeScreen::showInformation(json_object* json)
+```
+ json [in] : This argument should be specified to the json parameters.
+
+ Post Information to Homescreen which will display at bottom area of Homescreen.
+```
+
+* * *
+
+## Sequence
### Initialize Sequence
- * deprecated
-<div id="TapShortcutSequence"></div>
-
### Tap Shortcut Sequence
-<div id="OnScreenMessageSequence"></div>
+### ShowWindow Sequence
+
### On Screen Message / Reply Sequence
+### ShowOnScreen Sequence
+
-<div id="Sample\ code"></div>
+### ShowNotification Sequence
+
-# Sample code
+### ShowInformation Sequence
+
+
+* * *
+
+## Sample code
You can find sample implementation of HomeScreen as below.
* `libhomescreen/sample/simple-egl`
* `libhomescreen/sample/template`
-### Appendix
+* * *
-```
-@startuml
-title Application initialization phase (ex. registerCallback)
-entity App
-entity HomeScreenBinder
-entity HomeScreenGUI
-App->HomeScreenBinder: init(port, token)
-App->HomeScreenBinder: subscribe()
+## Limitation
+None.
-note over HomeScreenBinder
- Register the event the App wishes to receive
- ・tap_shortcut
- ・on_screen_message
- ・on_screen_reply
-end note
+* * *
-App->HomeScreenBinder: registerCallback()
+## Next Plan
+None.
-@enduml
-```
+* * *
+
+## Appendix
```
@startuml
-title Application initialization phase (ex. set_event_handler)
+
+title Application initialization phase
+
entity App
entity HomeScreenBinder
entity HomeScreenGUI
+
App->HomeScreenBinder: init(port, token)
App->HomeScreenBinder: set_event_handler()
note over HomeScreenBinder
setup event handler the App wishes to receive
- ・LibHomeScreen::Event_TapShortcut
- ・LibHomeScreen::Event_OnScreenMessage
- ・LibHomeScreen::Event_OnScreenReply
+ ・LibHomeScreen::Event_ShowWindow
+ ・LibHomeScreen::Event_HideWindow
+ ・LibHomeScreen::Event_ReplyShowWindow
end note
@enduml
@enduml
```
+```
+@startuml
+
+title Application callback event showWindow phase
+
+actor user
+entity "homescreen-service" as hss
+entity launcher
+entity App
+entity windowmanager as wm
+
+user-->launcher: tap app's icon
+launcher->hss: showWindow()
+note over hss,App
+{"application_id":"tapped application id", "parameter":{"area":"display area", ...}}
+end note
+hss->App: push showWindow event
+App->wm: activateWindow("application_name","display area")
+wm-->App: push syncDraw event
+App->App: display
+
+@enduml
+```
+
```
@startuml
title Application Callback Event On Screen Message / Reply phase
HomeScreenBinder->App: event_handler(reply_message)
@enduml
```
+
+```
+@startuml
+
+title show/hide onscreen phase
+
+actor user
+entity "homescreen-service" as hss
+entity App
+entity onscreenapp
+entity windowmanager as wm
+
+== show onscreen ==
+user->App: the operation request onscreen
+App->hss: showWindow()
+note over App,hss
+{"application_id":"onscreenapp",
+"parameter":{"area":"display area", "file":"qml file path",
+"data":{"the datas to onscreen qml"}}}
+end note
+
+hss->onscreenapp: push showWindow event
+note over hss,onscreenapp
+{"application_id":"onscreenapp",
+"parameter":{"area":"display area", "file":"qml file path",
+"data":{"the datas to onscreen qml"},
+<font color=red >"replyto":"caller application id"
+}}
+end note
+
+onscreenapp->onscreenapp: get and save parameters
+onscreenapp->wm: activateWindow("onscreeapp", "display area")
+alt can show
+wm-->onscreenapp: push syncDraw event
+onscreenapp->wm: endDraw("onscreeapp")
+onscreenapp->onscreenapp: load and display qml file
+else can't show
+note over onscreenapp,wm
+do nothing
+end note
+end
+
+== hide onscreen ==
+
+user->onscreenapp: tap onscreen's button
+onscreenapp->hss: replyShowWindow()
+note over onscreenapp,hss
+{"application_id":"the application id who called onscreenapp",
+"parameter": {"buttonName": "VOLUME_UP", "buttonPressMode": "shortPress", "buttonPressState": "release"}}
+end note
+hss->App: push replyShowWindow event
+App->App: call reply function
+App->hss: hideWindow("onscreenapp")
+hss->onscreenapp: push hideWindow event
+note over hss,onscreenapp
+{"application_id":"request hideWindow application id"}
+end note
+onscreenapp->wm: deactivateWindow("onscreenapp");
+onscreenapp->onscreenapp: hide window
+
+@enduml
+```
+
+```
+@startuml
+
+title show notification on HomeScreen top area
+
+entity "homescreen-service" as hss
+entity homescreen
+entity App
+
+App->hss: showNotification()
+note over App,hss
+{"icon":"display icon", "text":"display text"}
+end note
+hss-> homescreen: push showNotification event
+note over hss,homescreen
+{"application_id":"request application id",
+"parameter":{"icon":"display icon", "text":"display text"}}
+end note
+
+homescreen->homescreen: display notification message 3s
+
+@enduml
+```
+
+```
+@startuml
+
+title show information on HomeScreen bottom area
+
+entity "homescreen-service" as hss
+entity homescreen
+entity App
+
+App->hss: showInformation()
+note over hss
+{"info":"display information"}
+end note
+hss-> homescreen: push showInformation event
+
+homescreen->homescreen: display information message 3s
+
+@enduml
+```
Code Review / apps / agl-service-homescreen.git / blobdiff