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long press: Add a delay-factor property

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Add a way to set a delay factor that can be used
to make the long press more or less sensitive.
Making this a factor instead of exposing the delay
itself preserves the value of the setting as an
overall 'slow down long press' setting.
This commit is contained in:
Matthias Clasen 2015-02-22 17:48:39 -05:00
parent c060d93e3d
commit 2b6376248d
1 changed files with 68 additions and 3 deletions
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71
gtk/gtkgesturelongpress.c
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@ -49,11 +49,16 @@ enum {
N_SIGNALS
};
enum {
PROP_DELAY_FACTOR = 1
};
struct _GtkGestureLongPressPrivate
{
gdouble initial_x;
gdouble initial_y;
gdouble delay_factor;
guint timeout_id;
guint delay;
guint cancelled : 1;
@ -67,6 +72,10 @@ G_DEFINE_TYPE_WITH_PRIVATE (GtkGestureLongPress, gtk_gesture_long_press, GTK_TYP
static void
gtk_gesture_long_press_init (GtkGestureLongPress *gesture)
{
GtkGestureLongPressPrivate *priv;
priv = gtk_gesture_long_press_get_instance_private (GTK_GESTURE_LONG_PRESS (gesture));
priv->delay_factor = 1.0;
}
static gboolean
@ -121,7 +130,10 @@ gtk_gesture_long_press_begin (GtkGesture *gesture,
widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
g_object_get (gtk_widget_get_settings (widget),
"gtk-long-press-time", &delay, NULL);
"gtk-long-press-time", &delay,
NULL);
delay = (gint)(priv->delay_factor * delay);
gtk_gesture_get_point (gesture, sequence,
&priv->initial_x, &priv->initial_y);
@ -205,6 +217,50 @@ gtk_gesture_long_press_finalize (GObject *object)
G_OBJECT_CLASS (gtk_gesture_long_press_parent_class)->finalize (object);
}
static void
gtk_gesture_long_press_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkGestureLongPressPrivate *priv;
priv = gtk_gesture_long_press_get_instance_private (GTK_GESTURE_LONG_PRESS (object));
switch (property_id)
{
case PROP_DELAY_FACTOR:
g_value_set_double (value, priv->delay_factor);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_gesture_long_press_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkGestureLongPressPrivate *priv;
priv = gtk_gesture_long_press_get_instance_private (GTK_GESTURE_LONG_PRESS (object));
switch (property_id)
{
case PROP_DELAY_FACTOR:
priv->delay_factor = g_value_get_double (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_gesture_long_press_class_init (GtkGestureLongPressClass *klass)
{
@ -212,14 +268,23 @@ gtk_gesture_long_press_class_init (GtkGestureLongPressClass *klass)
GtkGestureClass *gesture_class = GTK_GESTURE_CLASS (klass);
object_class->finalize = gtk_gesture_long_press_finalize;
object_class->get_property = gtk_gesture_long_press_get_property;
object_class->set_property = gtk_gesture_long_press_set_property;
gesture_class->check = gtk_gesture_long_press_check;
gesture_class->begin = gtk_gesture_long_press_begin;
gesture_class->update = gtk_gesture_long_press_update;
gesture_class->end = gtk_gesture_long_press_end;
gesture_class->cancel = gtk_gesture_long_press_cancel;
gesture_class->sequence_state_changed =
gtk_gesture_long_press_sequence_state_changed;
gesture_class->sequence_state_changed = gtk_gesture_long_press_sequence_state_changed;
g_object_class_install_property (object_class,
PROP_DELAY_FACTOR,
g_param_spec_double ("delay-factor",
P_("Delay factor"),
P_("Factor by which to modify the default timeout"),
0.5, 2.0, 1.0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GtkGestureLongPress::pressed: