protocol, grpc-proxy: Add support for set_app_float

Add support for setting a window as float/popup. This allows either the
application itself be set-up as float, or from other gRPC clients.

Bug-AGL: SPEC-4673
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Change-Id: Ic7ee8203cd9c4dfcc51b7fc9709f35be504ae9d0

9 files changed, 122 insertions, 8 deletions

diff --git a/grpc-proxy/agl_shell.proto b/grpc-proxy/agl_shell.proto
index 22fad1c..8e81750 100644
--- a/grpc-proxy/agl_shell.proto
+++ b/grpc-proxy/agl_shell.proto
@@ -37,6 +37,8 @@ message SplitResponse {
 
 message FloatRequest {
        string app_id = 1;
+       int32 x_pos = 2;
+       int32 y_pos = 3;
 }
 
 message FloatResponse {
diff --git a/grpc-proxy/grpc-async-cb.cpp b/grpc-proxy/grpc-async-cb.cpp
index d0fd88d..3754b3c 100644
--- a/grpc-proxy/grpc-async-cb.cpp
+++ b/grpc-proxy/grpc-async-cb.cpp
@@ -114,7 +114,8 @@ GrpcServiceImpl::SetAppFloat(grpc::CallbackServerContext *context,
                             const ::agl_shell_ipc::FloatRequest* request,
                             ::agl_shell_ipc::FloatResponse* /* response */)
 {
-	m_aglShell->SetAppFloat(request->app_id());
+	m_aglShell->SetAppFloat(request->app_id(),
+				request->x_pos(), request->y_pos());
 
 	grpc::ServerUnaryReactor* reactor = context->DefaultReactor();
 	reactor->Finish(grpc::Status::OK);
diff --git a/grpc-proxy/main-grpc.cpp b/grpc-proxy/main-grpc.cpp
index d094be5..ea609f0 100644
--- a/grpc-proxy/main-grpc.cpp
+++ b/grpc-proxy/main-grpc.cpp
@@ -260,7 +260,7 @@ global_add(void *data, struct wl_registry *reg, uint32_t id,
 		sh->shell =
 			static_cast<struct agl_shell *>(wl_registry_bind(reg, id,
 				&agl_shell_interface,
-				std::min(static_cast<uint32_t>(5), version)));
+				std::min(static_cast<uint32_t>(6), version)));
 		agl_shell_add_listener(sh->shell, &shell_listener, data);
 		sh->version = version;
 	} else if (strcmp(interface, "wl_output") == 0) {
@@ -284,7 +284,7 @@ global_add_init(void *data, struct wl_registry *reg, uint32_t id,
 		sh->shell =
 			static_cast<struct agl_shell *>(wl_registry_bind(reg, id,
 				&agl_shell_interface,
-				std::min(static_cast<uint32_t>(5), version)));
+				std::min(static_cast<uint32_t>(6), version)));
 		agl_shell_add_listener(sh->shell, &shell_listener_init, data);
 		sh->version = version;
 	}
diff --git a/grpc-proxy/shell.cpp b/grpc-proxy/shell.cpp
index b96ac39..83032b1 100644
--- a/grpc-proxy/shell.cpp
+++ b/grpc-proxy/shell.cpp
@@ -68,9 +68,12 @@ Shell::DeactivateApp(const std::string &app_id)
 }
 
 void
-Shell::SetAppFloat(const std::string &app_id)
+Shell::SetAppFloat(const std::string &app_id, int32_t x_pos, int32_t y_pos)
 {
-	(void) app_id;
+	struct agl_shell *shell = this->m_shell.get();
+
+	agl_shell_set_app_float(shell, app_id.c_str(), x_pos, y_pos);
+	wl_display_flush(m_shell_data->wl_display);
 }
 
 void
diff --git a/grpc-proxy/shell.h b/grpc-proxy/shell.h
index 03a4a87..4059e0b 100644
--- a/grpc-proxy/shell.h
+++ b/grpc-proxy/shell.h
@@ -41,5 +41,6 @@ public:
 	void ActivateApp(const std::string &app_id, const std::string &output_name);
 	void DeactivateApp(const std::string &app_id);
 	void SetAppSplit(const std::string &app_id, uint32_t orientation);
-	void SetAppFloat(const std::string &app_id);
+	void SetAppFloat(const std::string &app_id,
+			 int32_t x_pos, int32_t y_pos);
 };
diff --git a/protocol/agl-shell.xml b/protocol/agl-shell.xml
index d3640f6..140910c 100644
--- a/protocol/agl-shell.xml
+++ b/protocol/agl-shell.xml
@@ -22,7 +22,7 @@
     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     DEALINGS IN THE SOFTWARE.
   </copyright>
-  <interface name="agl_shell" version="5">
+  <interface name="agl_shell" version="6">
     <description summary="user interface for Automotive Grade Linux platform">
       Starting with version 2 of the protocol, the client is required to wait
       for the 'bound_ok' or 'bound_fail' events in order to proceed further.
@@ -217,6 +217,32 @@
       </description>
       <arg name="app_id" type="string"/>
     </request>
+
+    <request name="set_app_float" since="6">
+      <description summary="set the window identified by app_id as float">
+        Makes the application identified by app_id as floating. If the
+        application's window is already mapped, in a maximized, normal state,
+        it would transition to the float state.
+
+        For applications that want to modify their own state, this request
+        must be done before the initial surface commit in order to take effect.
+
+        If the application is already in floating state, this request wouldn't
+        do anything.
+
+        There's no persistence of this request, once the application terminated
+        you'll to issue this request again for that particular app_id.
+
+        The x, and y values would be initial position of the window where the
+        window surface will be placed.
+
+        See xdg_toplevel.set_app_id from the xdg-shell protocol for a
+        description of app_id.
+      </description>
+      <arg name="app_id" type="string"/>
+      <arg name="x" type="int" summary="x position"/>
+      <arg name="y" type="int" summary="y position"/>
+    </request>
   </interface>
 
   <interface name="agl_shell_ext" version="1">
diff --git a/src/ivi-compositor.h b/src/ivi-compositor.h
index ed56c7f..f755e67 100644
--- a/src/ivi-compositor.h
+++ b/src/ivi-compositor.h
@@ -507,4 +507,10 @@ shell_send_app_state(struct ivi_compositor *ivi, const char *app_id,
 void
 ivi_layout_destroy_saved_outputs(struct ivi_compositor *ivi);
 
+struct weston_output *
+get_default_output(struct weston_compositor *compositor);
+
+struct weston_output *
+get_focused_output(struct weston_compositor *compositor);
+
 #endif
diff --git a/src/layout.c b/src/layout.c
index 028ff4a..bc489b2 100644
--- a/src/layout.c
+++ b/src/layout.c
@@ -788,6 +788,19 @@ ivi_compute_popup_position(const struct weston_output *output, struct weston_vie
 }
 
 
+static bool
+ivi_surf_in_hidden_layer(struct ivi_compositor *ivi, struct ivi_surface *surface)
+{
+	struct weston_view *ev;
+
+	wl_list_for_each(ev, &ivi->hidden.view_list.link, layer_link.link) {
+		if (ev == surface->view)
+			return true;
+	}
+
+	return false;
+}
+
 void
 ivi_layout_popup_committed(struct ivi_surface *surface)
 {
@@ -819,6 +832,10 @@ ivi_layout_popup_committed(struct ivi_surface *surface)
 
 	assert(surface->role == IVI_SURFACE_ROLE_POPUP);
 
+	/* remove it from hidden layer if present */
+	if (ivi_surf_in_hidden_layer(ivi, surface))
+		weston_layer_entry_remove(&view->layer_link);
+
 	weston_view_set_output(view, woutput);
 
 	ivi_compute_popup_position(woutput, view,
diff --git a/src/shell.c b/src/shell.c
index b1ef59b..4a1a954 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -1448,6 +1448,63 @@ shell_new_deactivate_app(struct wl_client *client, struct wl_resource *shell_res
 }
 
 static void
+shell_set_app_float(struct wl_client *client, struct wl_resource *shell_res,
+		   const char *app_id, int32_t x_pos, int32_t y_pos)
+{
+	struct ivi_compositor *ivi = wl_resource_get_user_data(shell_res);
+	struct weston_output *output = get_focused_output(ivi->compositor);
+	struct ivi_output *ivi_output;
+	struct ivi_surface *surf = ivi_find_app(ivi, app_id);
+
+	if (!output)
+		output = get_default_output(ivi->compositor);
+
+	ivi_output = to_ivi_output(output);
+
+	/* verify if already mapped as desktop role, regular, unmap it, so we
+	 * can make it float */
+	if (surf && surf->role == IVI_SURFACE_ROLE_DESKTOP) {
+		struct weston_view *ev = surf->view;
+		struct weston_desktop_surface *dsurf = surf->dsurface;
+		struct ivi_bounding_box bb = {};
+
+		/* XXX: if this is useful we could bring it as active then make
+		 * it float, but avoid doing it for the moment */
+		if (surf != ivi_output->active)
+			return;
+
+		ivi_layout_deactivate(ivi, app_id);
+		surf->hidden_layer_output = ivi_output;
+
+		/* set attributes */
+		surf->popup.output = ivi_output;
+
+		surf->popup.x = x_pos;
+		surf->popup.y = y_pos;
+		surf->popup.bb = bb;
+
+		/* change the role */
+		surf->role = IVI_SURFACE_ROLE_NONE;
+
+		wl_list_remove(&surf->link);
+		wl_list_init(&surf->link);
+
+		ivi_set_desktop_surface_popup(surf);
+
+		weston_desktop_surface_set_maximized(dsurf, false);
+		weston_desktop_surface_set_size(dsurf, 0, 0);
+
+		/* add to hidden layer */
+		weston_layer_entry_insert(&ivi->hidden.view_list, &ev->layer_link);
+		weston_compositor_schedule_repaint(ivi->compositor);
+
+	} else if (!surf || (surf && surf->role != IVI_SURFACE_ROLE_POPUP)) {
+		ivi_set_pending_desktop_surface_popup(ivi_output, x_pos, y_pos, 
+						      0, 0, 0, 0, app_id);
+	}
+}
+
+static void
 shell_desktop_activate_app(struct wl_client *client,
 			   struct wl_resource *shell_res,
 			   const char *app_id, const char *data,
@@ -1529,6 +1586,7 @@ static const struct agl_shell_interface agl_shell_implementation = {
 	.destroy = shell_destroy,
 	.set_activate_region = shell_set_activate_region,
 	.deactivate_app = shell_new_deactivate_app,
+	.set_app_float = shell_set_app_float,
 };
 
 static const struct agl_shell_ext_interface agl_shell_ext_implementation = {
@@ -1828,7 +1886,7 @@ int
 ivi_shell_create_global(struct ivi_compositor *ivi)
 {
 	ivi->agl_shell = wl_global_create(ivi->compositor->wl_display,
-					  &agl_shell_interface, 5,
+					  &agl_shell_interface, 6,
 					  ivi, bind_agl_shell);
 	if (!ivi->agl_shell) {
 		weston_log("Failed to create wayland global.\n");