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spinbutton: increase/decrease value on upwards/downwards touch swipes

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This is somewhat analogous to scroll events on pointer devices, the
greater the velocity, the faster the spinbutton spins.
This commit is contained in:
Carlos Garnacho 2014-04-08 21:24:54 +02:00
parent c7da5b54f5
commit 6296aa84b2
1 changed files with 93 additions and 2 deletions
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91
gtk/gtkspinbutton.c
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@ -166,6 +166,9 @@ struct _GtkSpinButtonPrivate
GtkOrientation orientation;
GtkGesture *long_press_gesture;
GtkGesture *swipe_gesture;
guint button : 2;
guint digits : 10;
guint need_timer : 1;
@ -283,6 +286,9 @@ static gint gtk_spin_button_default_input (GtkSpinButton *spin_button,
gdouble *new_val);
static void gtk_spin_button_default_output (GtkSpinButton *spin_button);
static gboolean gtk_spin_button_touch_event (GtkWidget *widget,
GdkEventTouch *event);
static guint spinbutton_signals[LAST_SIGNAL] = {0};
G_DEFINE_TYPE_WITH_CODE (GtkSpinButton, gtk_spin_button, GTK_TYPE_ENTRY,
@ -329,6 +335,7 @@ gtk_spin_button_class_init (GtkSpinButtonClass *class)
widget_class->grab_notify = gtk_spin_button_grab_notify;
widget_class->state_flags_changed = gtk_spin_button_state_flags_changed;
widget_class->style_updated = gtk_spin_button_style_updated;
widget_class->touch_event = gtk_spin_button_touch_event;
entry_class->activate = gtk_spin_button_activate;
entry_class->get_text_area_size = gtk_spin_button_get_text_area_size;
@ -641,6 +648,40 @@ gtk_spin_button_get_property (GObject *object,
}
}
static void
long_press_action (GtkGestureLongPress *gesture,
gdouble x,
gdouble y,
GtkSpinButton *spin_button)
{
gtk_gesture_set_state (spin_button->priv->swipe_gesture,
GTK_EVENT_SEQUENCE_DENIED);
}
static void
long_press_cancel_action (GtkGestureLongPress *gesture,
gdouble x,
gdouble y,
GtkSpinButton *spin_button)
{
gtk_gesture_set_state (spin_button->priv->swipe_gesture,
GTK_EVENT_SEQUENCE_CLAIMED);
}
static void
swipe_gesture_update (GtkGesture *gesture,
GdkEventSequence *sequence,
GtkSpinButton *spin_button)
{
gdouble vel_y;
if (gtk_gesture_get_sequence_state (gesture, sequence) != GTK_EVENT_SEQUENCE_CLAIMED)
return;
gtk_gesture_swipe_get_velocity (GTK_GESTURE_SWIPE (gesture), NULL, &vel_y);
gtk_spin_button_real_spin (spin_button, -vel_y / 20);
}
static void
gtk_spin_button_init (GtkSpinButton *spin_button)
{
@ -676,6 +717,24 @@ gtk_spin_button_init (GtkSpinButton *spin_button)
gtk_style_context_add_class (context, GTK_STYLE_CLASS_SPINBUTTON);
gtk_widget_add_events (GTK_WIDGET (spin_button), GDK_SCROLL_MASK);
priv->long_press_gesture = gtk_gesture_long_press_new (GTK_WIDGET (spin_button));
gtk_widget_add_controller (GTK_WIDGET (spin_button),
GTK_EVENT_CONTROLLER (priv->long_press_gesture));
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (priv->long_press_gesture),
GTK_PHASE_NONE);
g_signal_connect (priv->long_press_gesture, "pressed",
G_CALLBACK (long_press_action), spin_button);
g_signal_connect (priv->long_press_gesture, "cancelled",
G_CALLBACK (long_press_cancel_action), spin_button);
priv->swipe_gesture = gtk_gesture_swipe_new (GTK_WIDGET (spin_button));
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (priv->swipe_gesture),
GTK_PHASE_NONE);
gtk_widget_add_controller (GTK_WIDGET (spin_button),
GTK_EVENT_CONTROLLER (priv->swipe_gesture));
g_signal_connect (priv->swipe_gesture, "update",
G_CALLBACK (swipe_gesture_update), spin_button);
}
static void
@ -1456,6 +1515,29 @@ start_spinning (GtkSpinButton *spin,
gtk_widget_queue_draw (GTK_WIDGET (spin));
}
static gboolean
_gtk_spin_button_handle_drag (GtkWidget *widget,
const GdkEvent *event)
{
GtkSpinButtonPrivate *priv;
priv = GTK_SPIN_BUTTON (widget)->priv;
gtk_event_controller_handle_event (GTK_EVENT_CONTROLLER (priv->long_press_gesture),
(const GdkEvent*) event);
gtk_event_controller_handle_event (GTK_EVENT_CONTROLLER (priv->swipe_gesture),
(const GdkEvent*) event);
return (gtk_gesture_is_recognized (priv->long_press_gesture) ||
gtk_gesture_is_recognized (priv->swipe_gesture));
}
static gboolean
gtk_spin_button_touch_event (GtkWidget *widget,
GdkEventTouch *event)
{
return _gtk_spin_button_handle_drag (widget, (const GdkEvent*) event);
}
static gint
gtk_spin_button_button_press (GtkWidget *widget,
GdkEventButton *event)
@ -1487,8 +1569,11 @@ gtk_spin_button_button_press (GtkWidget *widget,
return TRUE;
}
else
{
_gtk_spin_button_handle_drag (widget, (const GdkEvent*) event);
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_press_event (widget, event);
}
}
return FALSE;
}
@ -1529,8 +1614,11 @@ gtk_spin_button_button_release (GtkWidget *widget,
return TRUE;
}
else
{
_gtk_spin_button_handle_drag (widget, (const GdkEvent*) event);
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->button_release_event (widget, event);
}
}
static gint
gtk_spin_button_motion_notify (GtkWidget *widget,
@ -1553,6 +1641,9 @@ gtk_spin_button_motion_notify (GtkWidget *widget,
return FALSE;
}
if (_gtk_spin_button_handle_drag (widget, (const GdkEvent*) event))
return TRUE;
return GTK_WIDGET_CLASS (gtk_spin_button_parent_class)->motion_notify_event (widget, event);
}