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137 lines
3.8 KiB
C
137 lines
3.8 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2010 Intel Corporation.
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* Copyright (C) 2011 Robert Bosch Car Multimedia GmbH.
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* Copyright (C) 2012 Collabora Ltd.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* Emanuele Aina <emanuele.aina@collabora.com>
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*
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* Based on ClutterPanAction
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* Based on ClutterDragAction, ClutterSwipeAction, and MxKineticScrollView,
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* written by:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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* Tomeu Vizoso <tomeu.vizoso@collabora.co.uk>
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* Chris Lord <chris@linux.intel.com>
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*/
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/**
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* SECTION:clutter-tap-action
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* @Title: ClutterTapAction
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* @Short_Description: Action for tap gestures
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*
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* #ClutterTapAction is a sub-class of #ClutterGestureAction that implements
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* the logic for recognizing mouse clicks and touch tap gestures.
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*
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* The simplest usage of #ClutterTapAction consists in adding it to
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* a #ClutterActor, setting it as reactive and connecting a
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* callback for the #ClutterTapAction::tap signal, along the lines of the
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* following code:
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*
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* |[
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* clutter_actor_add_action (actor, clutter_tap_action_new ());
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* clutter_actor_set_reactive (actor, TRUE);
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* g_signal_connect (action, "tap", G_CALLBACK (on_tap_callback), NULL);
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* ]|
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "clutter-tap-action.h"
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#include "clutter-debug.h"
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#include "clutter-enum-types.h"
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#include "clutter-gesture-action-private.h"
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#include "clutter-marshal.h"
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#include "clutter-private.h"
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enum
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{
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TAP,
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LAST_SIGNAL
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};
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static guint tap_signals[LAST_SIGNAL] = { 0, };
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G_DEFINE_TYPE (ClutterTapAction, clutter_tap_action,
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CLUTTER_TYPE_GESTURE_ACTION);
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static void
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emit_tap (ClutterTapAction *self,
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ClutterActor *actor)
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{
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g_signal_emit (self, tap_signals[TAP], 0, actor);
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}
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static void
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gesture_end (ClutterGestureAction *gesture,
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ClutterActor *actor)
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{
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emit_tap (CLUTTER_TAP_ACTION (gesture), actor);
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}
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static void
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clutter_tap_action_class_init (ClutterTapActionClass *klass)
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{
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ClutterGestureActionClass *gesture_class =
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CLUTTER_GESTURE_ACTION_CLASS (klass);
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gesture_class->gesture_end = gesture_end;
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/**
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* ClutterTapAction::tap:
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* @action: the #ClutterTapAction that emitted the signal
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* @actor: the #ClutterActor attached to the @action
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*
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* The ::tap signal is emitted when the tap gesture is complete.
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*/
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tap_signals[TAP] =
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g_signal_new (I_("tap"),
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (ClutterTapActionClass, tap),
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NULL, NULL,
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_clutter_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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CLUTTER_TYPE_ACTOR);
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}
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static void
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clutter_tap_action_init (ClutterTapAction *self)
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{
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_clutter_gesture_action_set_threshold_trigger_edge (CLUTTER_GESTURE_ACTION (self),
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CLUTTER_GESTURE_TRIGGER_EDGE_BEFORE);
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}
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/**
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* clutter_tap_action_new:
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*
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* Creates a new #ClutterTapAction instance
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*
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* Return value: the newly created #ClutterTapAction
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*/
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ClutterAction *
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clutter_tap_action_new (void)
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{
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return g_object_new (CLUTTER_TYPE_TAP_ACTION, NULL);
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}
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