[Qemu-devel] [PATCH] add input-send-event command

[Marcelo Tosatti <mtosatti@redhat.com>]

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

Suggested by Gerd Hoffman.

---
 qapi-schema.json |   18 ++++++++++++++++
 qmp-commands.hx  |   59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 ui/input.c       |   31 ++++++++++++++++++++++++++++
 3 files changed, 108 insertions(+)

Index: qemu/qapi-schema.json
===================================================================
--- qemu.orig/qapi-schema.json	2014-06-16 20:12:51.049064621 -0300
+++ qemu/qapi-schema.json	2014-06-16 20:13:42.886920723 -0300
@@ -4722,3 +4722,21 @@
               'btn'     : 'InputBtnEvent',
               'rel'     : 'InputMoveEvent',
               '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: 2.1
+#
+##
+{ 'command': 'input-send-event',
+  'data': { 'console':'int', 'events': [ 'InputEvent' ] } }
+
Index: qemu/qmp-commands.hx
===================================================================
--- qemu.orig/qmp-commands.hx	2014-06-16 20:12:51.050064619 -0300
+++ qemu/qmp-commands.hx	2014-06-16 20:13:42.888920718 -0300
@@ -3572,3 +3572,62 @@
                    } } ] }
 
 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
+its 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" } },
+                    { "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
Index: qemu/ui/input.c
===================================================================
--- qemu.orig/ui/input.c	2014-06-16 20:12:51.051064616 -0300
+++ qemu/ui/input.c	2014-06-16 20:13:42.888920718 -0300
@@ -102,6 +102,37 @@
     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;
+        }
+        qemu_input_event_send(con, event);
+    }
+    qemu_input_event_sync();
+}
+
 static void qemu_input_transform_abs_rotate(InputEvent *evt)
 {
     switch (graphic_rotate) {