add implementation of ratbag_has_capability

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>

src/etekcity.c

@@ -93,6 +93,22 @@ print_key(__u8 key)
 	return "UNKNOWN";
 }
 
+static int
+etekcity_has_capability(const struct ratbag *ratbag, enum ratbag_capability cap)
+{
+	switch (cap) {
+	case RATBAG_CAP_NONE:
+		return 0;
+	case RATBAG_CAP_SWITCHABLE_RESOLUTION:
+	case RATBAG_CAP_SWITCHABLE_PROFILE:
+	case RATBAG_CAP_BUTTON_PROFILES:
+	case RATBAG_CAP_BUTTON_KEY:
+	case RATBAG_CAP_BUTTON_MACROS:
+		return 1;
+	}
+	return 0;
+}
+
 static int
 etekcity_current_profile(struct ratbag *ratbag)
 {
@@ -223,4 +239,5 @@ struct ratbag_driver etekcity_driver = {
 	.probe = etekcity_probe,
 	.read_profile = etekcity_read_profile,
 	.get_active_profile = etekcity_current_profile,
+	.has_capability = etekcity_has_capability,
 };

src/libratbag-private.h

@@ -68,6 +68,7 @@ struct ratbag_driver {
 	int (*probe)(struct ratbag *ratbag, const struct ratbag_id id);
 	void (*read_profile)(struct ratbag_profile *profile, unsigned int index);
 	int (*get_active_profile)(struct ratbag *ratbag);
+	int (*has_capability)(const struct ratbag *ratbag, enum ratbag_capability cap);
 
 	/* private */
 	struct list link;

src/libratbag.c

@@ -474,3 +474,10 @@ ratbag_get_num_buttons(struct ratbag *ratbag)
 {
 	return ratbag->num_buttons;
 }
+
+LIBRATBAG_EXPORT int
+ratbag_has_capability(const struct ratbag *ratbag, enum ratbag_capability cap)
+{
+	assert(ratbag->driver->has_capability);
+	return ratbag->driver->has_capability(ratbag, cap);
+}

src/libratbag.sym

@@ -10,6 +10,7 @@ global:
 	ratbag_get_num_profiles;
 	ratbag_get_num_buttons;
 	ratbag_get_profile_by_index;
+	ratbag_has_capability;
 	ratbag_new_from_fd;
 	ratbag_profile_ref;
 	ratbag_profile_unref;