lib: expose keyboard modifiers as flags property

lib/mks-keyboard.c

@@ -22,11 +22,14 @@
 #include "config.h"
 
 #include "mks-device-private.h"
+#include "mks-enums.h"
 #include "mks-keyboard.h"
 
 struct _MksKeyboard
 {
-  MksDevice parent_instance;
+  MksDevice        parent_instance;
+  MksQemuKeyboard *keyboard;
+  guint            modifiers;
 };
 
 struct _MksKeyboardClass
@@ -38,16 +41,77 @@ G_DEFINE_FINAL_TYPE (MksKeyboard, mks_keyboard, MKS_TYPE_DEVICE)
 
 enum {
   PROP_0,
+  PROP_MODIFIERS,
   N_PROPS
 };
 
 static GParamSpec *properties [N_PROPS];
 
+static void
+mks_keyboard_keyboard_notify_cb (MksKeyboard     *self,
+                                 GParamSpec      *pspec,
+                                 MksQemuKeyboard *keyboard)
+{
+  g_assert (MKS_IS_KEYBOARD (self));
+  g_assert (pspec != NULL);
+  g_assert (MKS_QEMU_IS_KEYBOARD (keyboard));
+
+  if (FALSE) {}
+  else if (strcmp (pspec->name, "modifiers") == 0)
+    {
+      self->modifiers = mks_qemu_keyboard_get_modifiers (keyboard);
+      g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_MODIFIERS]);
+    }
+}
+
+static void
+mks_keyboard_set_keyboard (MksKeyboard     *self,
+                           MksQemuKeyboard *keyboard)
+{
+  g_assert (MKS_IS_KEYBOARD (self));
+  g_assert (!keyboard || MKS_QEMU_IS_KEYBOARD (keyboard));
+
+  if (g_set_object (&self->keyboard, keyboard))
+    {
+      g_signal_connect_object (self->keyboard,
+                               "notify",
+                               G_CALLBACK (mks_keyboard_keyboard_notify_cb),
+                               self,
+                               G_CONNECT_SWAPPED);
+      self->modifiers = mks_qemu_keyboard_get_modifiers (keyboard);
+    }
+}
+
+static gboolean
+mks_keyboard_setup (MksDevice     *device,
+                    MksQemuObject *object)
+{
+  MksKeyboard *self = (MksKeyboard *)device;
+  g_autolist(GDBusInterface) interfaces = NULL;
+
+  g_assert (MKS_IS_KEYBOARD (self));
+  g_assert (MKS_QEMU_IS_OBJECT (object));
+
+  interfaces = g_dbus_object_get_interfaces (G_DBUS_OBJECT (object));
+
+  for (const GList *iter = interfaces; iter; iter = iter->next)
+    {
+      GDBusInterface *iface = iter->data;
+
+      if (MKS_QEMU_IS_KEYBOARD (iface))
+        mks_keyboard_set_keyboard (self, MKS_QEMU_KEYBOARD (iface));
+    }
+
+  return self->keyboard != NULL;
+}
+
 static void
 mks_keyboard_dispose (GObject *object)
 {
   MksKeyboard *self = (MksKeyboard *)object;
 
+  g_clear_object (&self->keyboard);
+
   G_OBJECT_CLASS (mks_keyboard_parent_class)->dispose (object);
 }
 
@@ -61,21 +125,10 @@ mks_keyboard_get_property (GObject    *object,
 
   switch (prop_id)
     {
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-    }
-}
+    case PROP_MODIFIERS:
+      g_value_set_flags (value, mks_keyboard_get_modifiers (self));
+      break;
 
-static void
-mks_keyboard_set_property (GObject      *object,
-                           guint         prop_id,
-                           const GValue *value,
-                           GParamSpec   *pspec)
-{
-  MksKeyboard *self = MKS_KEYBOARD (object);
-
-  switch (prop_id)
-    {
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
     }
@@ -85,13 +138,31 @@ static void
 mks_keyboard_class_init (MksKeyboardClass *klass)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  MksDeviceClass *device_class = MKS_DEVICE_CLASS (klass);
+
+  device_class->setup = mks_keyboard_setup;
 
   object_class->dispose = mks_keyboard_dispose;
   object_class->get_property = mks_keyboard_get_property;
-  object_class->set_property = mks_keyboard_set_property;
+
+  properties [PROP_MODIFIERS] =
+    g_param_spec_flags ("modifiers", NULL, NULL,
+                        MKS_TYPE_KEYBOARD_MODIFIER,
+                        MKS_KEYBOARD_MODIFIER_NONE,
+                        (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_properties (object_class, N_PROPS, properties);
 }
 
 static void
 mks_keyboard_init (MksKeyboard *self)
 {
 }
+
+MksKeyboardModifier
+mks_keyboard_get_modifiers (MksKeyboard *self)
+{
+  g_return_val_if_fail (MKS_IS_KEYBOARD (self), 0);
+
+  return self->modifiers;
+}

lib/mks-keyboard.h

@@ -42,7 +42,17 @@ G_BEGIN_DECLS
 
 typedef struct _MksKeyboardClass MksKeyboardClass;
 
+typedef enum _MksKeyboardModifier
+{
+  MKS_KEYBOARD_MODIFIER_NONE        = 0,
+  MKS_KEYBOARD_MODIFIER_SCROLL_LOCK = 1 << 0,
+  MKS_KEYBOARD_MODIFIER_NUM_LOCK    = 1 << 1,
+  MKS_KEYBOARD_MODIFIER_CAPS_LOCK   = 1 << 2,
+} MksKeyboardModifier;
+
 MKS_AVAILABLE_IN_ALL
-GType mks_keyboard_get_type (void) G_GNUC_CONST;
+GType               mks_keyboard_get_type      (void) G_GNUC_CONST;
+MKS_AVAILABLE_IN_ALL
+MksKeyboardModifier mks_keyboard_get_modifiers (MksKeyboard *self);
 
 G_END_DECLS

tools/mks-connect.c

@@ -42,10 +42,13 @@ print_device_info (MksDevice *device,
            G_OBJECT_TYPE_NAME (device),
            mks_device_get_name (device) ?: "");
   if (MKS_IS_SCREEN (device))
-    g_print (" number=%u width=%u height=%u",
+    g_print (", number=%u, width=%u, height=%u",
              mks_screen_get_number (MKS_SCREEN (device)),
              mks_screen_get_width (MKS_SCREEN (device)),
              mks_screen_get_height (MKS_SCREEN (device)));
+  else if (MKS_IS_KEYBOARD (device))
+    g_print (", modifiers=0x%x",
+             mks_keyboard_get_modifiers (MKS_KEYBOARD (device)));
   g_print (")\n");
 
   if (MKS_IS_SCREEN (device))