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binding: Add G_BINDING_INVERT_BOOLEAN

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Since GSettings got the same functionality and flag in commit ca3b7b75b
GBinding should also have the ability to automatically invert a boolean
value without requiring a custom transformation function.
This commit is contained in:
Emmanuele Bassi
2010-08-03 10:29:50 +01:00
parent 3be3ad61d1
commit 90f7f171e6
3 changed files with 130 additions and 13 deletions
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64
gobject/tests/binding.c
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@@ -8,6 +8,7 @@ typedef struct _BindingSource
gint foo;
gdouble value;
gboolean toggle;
} BindingSource;
typedef struct _BindingSourceClass
@@ -20,8 +21,8 @@ enum
PROP_SOURCE_0,
PROP_SOURCE_FOO,
PROP_SOURCE_VALUE
PROP_SOURCE_VALUE,
PROP_SOURCE_TOGGLE
};
G_DEFINE_TYPE (BindingSource, binding_source, G_TYPE_OBJECT);
@@ -44,6 +45,10 @@ binding_source_set_property (GObject *gobject,
source->value = g_value_get_double (value);
break;
case PROP_SOURCE_TOGGLE:
source->toggle = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
}
@@ -67,6 +72,10 @@ binding_source_get_property (GObject *gobject,
g_value_set_double (value, source->value);
break;
case PROP_SOURCE_TOGGLE:
g_value_set_boolean (value, source->toggle);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
}
@@ -90,6 +99,10 @@ binding_source_class_init (BindingSourceClass *klass)
-100.0, 200.0,
0.0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_SOURCE_TOGGLE,
g_param_spec_boolean ("toggle", "Toggle", "Toggle",
FALSE,
G_PARAM_READWRITE));
}
static void
@@ -103,6 +116,7 @@ typedef struct _BindingTarget
gint bar;
gdouble value;
gboolean toggle;
} BindingTarget;
typedef struct _BindingTargetClass
@@ -115,8 +129,8 @@ enum
PROP_TARGET_0,
PROP_TARGET_BAR,
PROP_TARGET_VALUE
PROP_TARGET_VALUE,
PROP_TARGET_TOGGLE
};
G_DEFINE_TYPE (BindingTarget, binding_target, G_TYPE_OBJECT);
@@ -139,6 +153,10 @@ binding_target_set_property (GObject *gobject,
target->value = g_value_get_double (value);
break;
case PROP_TARGET_TOGGLE:
target->toggle = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
}
@@ -162,6 +180,10 @@ binding_target_get_property (GObject *gobject,
g_value_set_double (value, target->value);
break;
case PROP_TARGET_TOGGLE:
g_value_set_boolean (value, target->toggle);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
}
@@ -180,11 +202,15 @@ binding_target_class_init (BindingTargetClass *klass)
-1, 100,
0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_SOURCE_VALUE,
g_object_class_install_property (gobject_class, PROP_TARGET_VALUE,
g_param_spec_double ("value", "Value", "Value",
-100.0, 200.0,
0.0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_TARGET_TOGGLE,
g_param_spec_boolean ("toggle", "Toggle", "Toggle",
FALSE,
G_PARAM_READWRITE));
}
static void
@@ -469,6 +495,33 @@ binding_sync_create (void)
g_object_unref (target);
}
static void
binding_invert_boolean (void)
{
BindingSource *source = g_object_new (binding_source_get_type (),
"toggle", TRUE,
NULL);
BindingTarget *target = g_object_new (binding_target_get_type (),
"toggle", FALSE,
NULL);
GBinding *binding;
binding = g_object_bind_property (source, "toggle",
target, "toggle",
G_BINDING_DEFAULT | G_BINDING_INVERT_BOOLEAN);
g_assert (source->toggle);
g_assert (!target->toggle);
g_object_set (source, "toggle", FALSE, NULL);
g_assert (!source->toggle);
g_assert (target->toggle);
g_object_unref (binding);
g_object_unref (source);
g_object_unref (target);
}
int
main (int argc, char *argv[])
{
@@ -481,6 +534,7 @@ main (int argc, char *argv[])
g_test_add_func ("/binding/transform-closure", binding_transform_closure);
g_test_add_func ("/binding/chain", binding_chain);
g_test_add_func ("/binding/sync-create", binding_sync_create);
g_test_add_func ("/binding/invert-boolean", binding_invert_boolean);
return g_test_run ();
}