+
+ const GVariantType *const type = g_variant_get_type(_value);
+ assert(type);
+
+ if (g_variant_type_equal(type, G_VARIANT_TYPE_BYTE))
+ {
+ int_val = g_variant_get_byte(_value);
+ range_min = 0, range_max = UINT8_MAX;
+ }
+ else if (g_variant_type_equal(type, G_VARIANT_TYPE_INT16))
+ {
+ int_val = g_variant_get_int16(_value);
+ range_min = INT16_MIN, range_max = INT16_MAX;
+ }
+ else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT16))
+ {
+ int_val = g_variant_get_uint16(_value);
+ range_min = 0, range_max = UINT16_MAX;
+ }
+ else if (g_variant_type_equal(type, G_VARIANT_TYPE_INT32))
+ {
+ int_val = g_variant_get_int32(_value);
+ range_min = INT32_MIN, range_max = INT32_MAX;
+ }
+ else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT32))
+ {
+ int_val = g_variant_get_uint32(_value);
+ range_min = 0, range_max = UINT32_MAX;
+ }
+ else if (g_variant_type_equal(type, G_VARIANT_TYPE_INT64))
+ {
+ int_val = g_variant_get_int64(_value);
+ range_min = INT64_MIN, range_max = INT64_MAX;
+ }
+ else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT64))
+ {
+ int_val = g_variant_get_uint64(_value);
+ range_min = 0, range_max = UINT64_MAX;
+ }
+ else
+ {
+ // Unexpected value type.
+ assert(0);
+ }
+
+ // @todo Sigrok supports 64-bit quantities, but Qt does not have a
+ // standard widget to allow the values to be modified over the full
+ // 64-bit range on 32-bit machines. To solve the issue we need a
+ // custom widget.
+
+ range_min = max(range_min, (int64_t)INT_MIN);
+ range_max = min(range_max, (int64_t)INT_MAX);
+