agl-compositor: Adapt alexa-viewer to using the agl-shell-desktop proto

Do not hide the app, for the time being.

Bug-AGL: SPEC-3447

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Change-Id: I15e5f40b2d3864dd8e251f75b0a4ba05487c7649

1 files changed, 117 insertions, 54 deletions

diff --git a/app/main.cpp b/app/main.cpp
index 669341e..035f2d9 100644
--- a/app/main.cpp
+++ b/app/main.cpp
@@ -15,6 +15,7 @@
  * limitations under the License.
  */
 
+#include <QGuiApplication>
 #include <QtCore/QDebug>
 #include <QtCore/QCommandLineParser>
 #include <QtCore/QUrlQuery>
@@ -24,17 +25,93 @@
 #include <QtQml/qqml.h>
 #include <QQuickWindow>
 #include <QtQuickControls2/QQuickStyle>
+#include <qpa/qplatformnativeinterface.h>
 
 #include <json-c/json.h>
-#include <qlibwindowmanager.h>
 #include <qlibhomescreen.h>
 #include <guimetadata.h>
 #include "afbclient.h"
+#include "shell-desktop.h"
 #include <iostream>
 
-// Disable window activation at launch by default, but keep option
-// for potential debug use.
-#define HIDE_AT_LAUNCH
+QString my_app_id = QString("alexa-viewer");
+
+// this and the agl-shell extension should be added in some kind of a wrapper
+// for easy usage
+static void
+global_add(void *data, struct wl_registry *reg, uint32_t name,
+	   const char *interface, uint32_t version)
+{
+	struct agl_shell_desktop **shell =
+		static_cast<struct agl_shell_desktop **>(data);
+
+	if (strcmp(interface, agl_shell_desktop_interface.name) == 0) {
+		*shell = static_cast<struct agl_shell_desktop *>(
+				wl_registry_bind(reg, name, &agl_shell_desktop_interface, version)
+				);
+	}
+}
+
+static void
+global_remove(void *data, struct wl_registry *reg, uint32_t id)
+{
+	(void) data;
+	(void) reg;
+	(void) id;
+}
+
+static const struct wl_registry_listener registry_listener = {
+	global_add,
+	global_remove,
+};
+
+static void
+application_id_event(void *data, struct agl_shell_desktop *agl_shell_desktop,
+		     const char *app_id)
+{
+	(void) data;
+	(void) agl_shell_desktop;
+	// un-used
+	qInfo() << "app_id: " << app_id;
+}
+
+static void
+application_id_state(void *data, struct agl_shell_desktop *agl_shell_desktop,
+		const char *app_id, const char *app_data, uint32_t app_state, uint32_t app_role)
+{
+	(void) data;
+	(void) app_data;
+	(void) app_role;
+	(void) app_state;
+	(void) app_id;
+	(void) agl_shell_desktop;
+
+	// un-used
+}
+
+static const struct agl_shell_desktop_listener agl_shell_desk_listener = {
+	application_id_event,
+	application_id_state,
+};
+
+static struct agl_shell_desktop *
+register_agl_shell_desktop(void)
+{
+        struct wl_display *wl;
+        struct wl_registry *registry;
+        struct agl_shell_desktop *shell = nullptr;
+
+        QPlatformNativeInterface *native = qApp->platformNativeInterface();
+        wl = static_cast<struct wl_display *>(native->nativeResourceForIntegration("display"));
+        registry = wl_display_get_registry(wl);
+
+        wl_registry_add_listener(registry, &registry_listener, &shell);
+        // Roundtrip to get all globals advertised by the compositor
+        wl_display_roundtrip(wl);
+        wl_registry_destroy(registry);
+
+        return shell;
+}
 
 bool check_template_supported(json_object *data)
 {
@@ -61,30 +138,32 @@ bool check_template_supported(json_object *data)
 
 void async_event_cb(const char *event, json_object *data, void *closure)
 {
+	Shell *aglShell;
 	if(!data)
 		return;
 
+	if (!closure)
+		return;
+
+	aglShell = static_cast<Shell *>(closure);
+
+	qDebug() << "got async_event_cb()";
  	if(!strcmp(event, "vshl-capabilities/setDestination")) {
 		// Slight hack here, there's currently no convenient place to hook up raising
 		// the navigation app when a route is set by Alexa, so do so here for now.
-		if(closure != nullptr) {
-			static_cast<QLibHomeScreen*>(closure)->showWindow("navigation", "normal");
-		}
+		aglShell->activate_app(nullptr, "navigation", nullptr);
 	} else if(!strcmp(event, "vshl-capabilities/render_template")) {
 		// Raise ourselves, the UI code will receive the event as well and render it
-		if(closure != nullptr) {
-			if(!check_template_supported(data)) {
-				qDebug() << "Unsupported template type, ignoring!";
-				return;
-			}
-			static_cast<QLibHomeScreen*>(closure)->showWindow("alexa-viewer", "on_screen");
+		if(!check_template_supported(data)) {
+			qDebug() << "Unsupported template type, ignoring!";
+			return;
 		}
+		aglShell->activate_app(nullptr, my_app_id, nullptr);
 	} else if(!strcmp(event, "vshl-capabilities/clear_template")) {
 		// Hide ourselves
-		if(closure != nullptr) {
-			static_cast<QLibHomeScreen*>(closure)->hideWindow("alexa-viewer");
-		}
+		aglShell->deactivate_app(my_app_id);
 	}
+
 }
 
 void subscribe_async_events(AfbClient &client)
@@ -128,9 +207,8 @@ void subscribe_async_events(AfbClient &client)
 
 int main(int argc, char *argv[])
 {
-	QString graphic_role = QString("on_screen");
-
 	QGuiApplication app(argc, argv);
+	app.setDesktopFileName(my_app_id);
 
 	QCommandLineParser parser;
 	parser.addPositionalArgument("port", app.translate("main", "port for binding"));
@@ -155,52 +233,37 @@ int main(int argc, char *argv[])
 		bindingAddress.setQuery(query);
 	}
 
-	// QLibWM
-	QLibWindowmanager* qwmHandler = new QLibWindowmanager();
-	int res;
-	if((res = qwmHandler->init(port, token)) != 0){
-		qCritical("init qlibwm err(%d)", res);
-		return -1;
-	}
-	if((res = qwmHandler->requestSurface(graphic_role)) != 0) {
-		qCritical("requestSurface error(%d)", res);
-		return -1;
+	struct agl_shell_desktop *shell = register_agl_shell_desktop();
+	if (!shell) {
+		qDebug() << "agl_shell_desktop extension missing";
+		exit(EXIT_FAILURE);
 	}
-	qwmHandler->set_event_handler(QLibWindowmanager::Event_SyncDraw,
-				      [qwmHandler, &graphic_role](json_object *object) {
-					      qwmHandler->endDraw(graphic_role);
-				      });
-
-	// QLibHS
-	QLibHomeScreen* qhsHandler = new QLibHomeScreen();
-	qhsHandler->init(port, token.toStdString().c_str());
-	qhsHandler->set_event_handler(QLibHomeScreen::Event_ShowWindow,
-				      [qwmHandler, &graphic_role](json_object *object){
-					      qDebug("Surface %s got showWindow\n", graphic_role.toStdString().c_str());
-					      qwmHandler->activateWindow(graphic_role, "on_screen");
-				      });
-	qhsHandler->set_event_handler(QLibHomeScreen::Event_HideWindow,
-				      [qwmHandler, &graphic_role](json_object *object){
-					      qDebug("Surface %s got hideWindow\n", graphic_role.toStdString().c_str());
-					      qwmHandler->deactivateWindow(graphic_role);
-				      });
+
+	agl_shell_desktop_add_listener(shell, &agl_shell_desk_listener, NULL);
+
+	std::shared_ptr<struct agl_shell_desktop> agl_shell{shell, agl_shell_desktop_destroy};
+	Shell *aglShell = new Shell(agl_shell, &app);
+
+	// before loading the QML we can tell the compositor that we'd like to
+	// be a pop-up kind of window: we need to do this before creating the
+	// window itself (either engine load or any of the comp.create()), or
+	// we can use/designate another application to behave like that
+	//
+	// note that x and y initial positioning values have to be specified
+	// here (the last two args)
+	aglShell->set_window_props(nullptr, my_app_id,
+				   AGL_SHELL_DESKTOP_APP_ROLE_POPUP, 0, 0);
 
 	// Load qml
 	QQmlApplicationEngine engine;
 	QQmlContext *context = engine.rootContext();
-
-	context->setContextProperty("homescreen", qhsHandler);
+	context->setContextProperty("homescreen", aglShell);
 	context->setContextProperty("GuiMetadata", new GuiMetadata(bindingAddress, context));
 	engine.load(QUrl(QStringLiteral("qrc:/Main.qml")));
 
-#ifndef HIDE_AT_LAUNCH
-	QObject *root = engine.rootObjects().first();
-	QQuickWindow *window = qobject_cast<QQuickWindow *>(root);
-	QObject::connect(window, SIGNAL(frameSwapped()), qwmHandler, SLOT(slotActivateWindow()));
-#endif
 	// Create app framework client to handle events when window is not visible
 	AfbClient client(port, token.toStdString());
-	client.set_event_callback(async_event_cb, (void*) qhsHandler);
+	client.set_event_callback(async_event_cb, static_cast<void *>(aglShell));
 	subscribe_async_events(client);
 
 	return app.exec();