[Qemu-devel] [PULL 2/2] add input-send-event command

[Gerd Hoffmann <kraxel@redhat.com>]

From: Marcelo Tosatti <mtosatti@redhat.com>

Which allows specification of absolute/relative,
up/down and console parameters.

Suggested by Gerd Hoffman.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 qapi-schema.json | 17 +++++++++++++++
 qmp-commands.hx  | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 ui/input.c       | 37 +++++++++++++++++++++++++++++++++
 3 files changed, 117 insertions(+)

diff --git a/qapi-schema.json b/qapi-schema.json
index 4bfaf20..2e9e261 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3233,6 +3233,23 @@
               'abs'     : 'InputMoveEvent' } }
 
 ##
+# @input-send-event
+#
+# Send input event(s) to guest.
+#
+# @console: Which console to send event(s) to.
+#
+# @events: List of InputEvent union.
+#
+# Returns: Nothing on success.
+#
+# Since: 2.2
+#
+##
+{ 'command': 'input-send-event',
+  'data': { 'console':'int', 'events': [ 'InputEvent' ] } }
+
+##
 # @NumaOptions
 #
 # A discriminated record of NUMA options. (for OptsVisitor)
diff --git a/qmp-commands.hx b/qmp-commands.hx
index f581813..1abd619 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -3789,3 +3789,66 @@ Example:
 -> { "execute": "trace-event-set-state", "arguments": { "name": "qemu_memalign", "enable": "true" } }
 <- { "return": {} }
 EQMP
+
+    {
+        .name       = "input-send-event",
+        .args_type  = "console:i,events:q",
+        .mhandler.cmd_new = qmp_marshal_input_input_send_event,
+    },
+
+SQMP
+@input-send-event
+-----------------
+
+Send input event to guest.
+
+Arguments:
+
+- "console": console index.
+- "events": list of input events.
+
+The consoles are visible in the qom tree, under
+/backend/console[$index]. They have a device link and head property, so
+it is possible to map which console belongs to which device and display.
+
+Example (1):
+
+Press left mouse button.
+
+-> { "execute": "input-send-event",
+    "arguments": { "console": 0,
+                   "events": [ { "type": "btn",
+                    "data" : { "down": true, "button": "Left" } } } }
+<- { "return": {} }
+
+-> { "execute": "input-send-event",
+    "arguments": { "console": 0,
+                   "events": [ { "type": "btn",
+                    "data" : { "down": false, "button": "Left" } } } }
+<- { "return": {} }
+
+Example (2):
+
+Press ctrl-alt-del.
+
+-> { "execute": "input-send-event",
+     "arguments": { "console": 0, "events": [
+        { "type": "key", "data" : { "down": true,
+          "key": {"type": "qcode", "data": "ctrl" } } },
+        { "type": "key", "data" : { "down": true,
+          "key": {"type": "qcode", "data": "alt" } } },
+        { "type": "key", "data" : { "down": true,
+          "key": {"type": "qcode", "data": "delete" } } } ] } }
+<- { "return": {} }
+
+Example (3):
+
+Move mouse pointer to absolute coordinates (20000, 400).
+
+-> { "execute": "input-send-event" ,
+  "arguments": { "console": 0, "events": [
+               { "type": "abs", "data" : { "axis": "X", "value" : 20000 } },
+               { "type": "abs", "data" : { "axis": "Y", "value" : 400 } } ] } }
+<- { "return": {} }
+
+EQMP
diff --git a/ui/input.c b/ui/input.c
index 89d9db7..002831e 100644
--- a/ui/input.c
+++ b/ui/input.c
@@ -122,6 +122,43 @@ qemu_input_find_handler(uint32_t mask, QemuConsole *con)
     return NULL;
 }
 
+void qmp_input_send_event(int64_t console, InputEventList *events,
+                          Error **errp)
+{
+    InputEventList *e;
+    QemuConsole *con;
+
+    con = qemu_console_lookup_by_index(console);
+    if (!con) {
+        error_setg(errp, "console %" PRId64 " not found", console);
+        return;
+    }
+
+    if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
+        error_setg(errp, "VM not running");
+        return;
+    }
+
+    for (e = events; e != NULL; e = e->next) {
+        InputEvent *event = e->value;
+
+        if (!qemu_input_find_handler(1 << event->kind, con)) {
+            error_setg(errp, "Input handler not found for "
+                             "event type %s",
+                            InputEventKind_lookup[event->kind]);
+            return;
+        }
+    }
+
+    for (e = events; e != NULL; e = e->next) {
+        InputEvent *event = e->value;
+
+        qemu_input_event_send(con, event);
+    }
+
+    qemu_input_event_sync();
+}
+
 static void qemu_input_transform_abs_rotate(InputEvent *evt)
 {
     switch (graphic_rotate) {
-- 
1.8.3.1