23a9980c72
A long press is a special form of click action; the default implementation uses a single signal with multiple states: query, action and cancel. On click we use the "query" state to check whether the ClutterClickAction supports long presses; if the callback returns TRUE then we install a timeout and we either emit the "activate" state when the timeout expires or we emit the "cancel" state if the pointer leaves the actor, or if the pointer moves outside a certain threshold. If the long press reached the "activate" state then we skip the clicked signal emission.
132 lines
4.6 KiB
C
132 lines
4.6 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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*
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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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* Emmanuele Bassi <ebassi@linux.intel.com>
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*
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* Inspired by the StClickable class in GNOME Shell, written by:
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* Colin Walters <walters@verbum.org>
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*/
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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#ifndef __CLUTTER_CLICK_ACTION_H__
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#define __CLUTTER_CLICK_ACTION_H__
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#include <clutter/clutter-action.h>
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#include <clutter/clutter-event.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_CLICK_ACTION (clutter_click_action_get_type ())
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#define CLUTTER_CLICK_ACTION(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_CLICK_ACTION, ClutterClickAction))
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#define CLUTTER_IS_CLICK_ACTION(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_CLICK_ACTION))
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#define CLUTTER_CLICK_ACTION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_CLICK_ACTION, ClutterClickActionClass))
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#define CLUTTER_IS_CLICK_ACTION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_CLICK_ACTION))
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#define CLUTTER_CLICK_ACTION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_CLICK_ACTION, ClutterClickActionClass))
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typedef struct _ClutterClickAction ClutterClickAction;
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typedef struct _ClutterClickActionPrivate ClutterClickActionPrivate;
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typedef struct _ClutterClickActionClass ClutterClickActionClass;
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/**
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* ClutterLongPressState:
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* @CLUTTER_LONG_PRESS_QUERY: Queries the action whether it supports
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* long presses
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* @CLUTTER_LONG_PRESS_ACTIVATE: Activates the action on a long press
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* @CLUTTER_LONG_PRESS_CANCEL: The long press was cancelled
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*
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* The states for the #ClutterClikAction::long-press signal.
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*
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* Since: 1.8
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*/
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typedef enum { /*< prefix=CLUTTER_LONG_PRESS >*/
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CLUTTER_LONG_PRESS_QUERY,
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CLUTTER_LONG_PRESS_ACTIVATE,
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CLUTTER_LONG_PRESS_CANCEL
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} ClutterLongPressState;
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/**
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* ClutterClickAction:
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*
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* The <structname>ClutterClickAction</structname> structure contains
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* only private data and should be accessed using the provided API
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*
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* Since: 1.4
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*/
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struct _ClutterClickAction
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{
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/*< private >*/
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ClutterAction parent_instance;
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ClutterClickActionPrivate *priv;
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};
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/**
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* ClutterClickActionClass:
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* @clicked: class handler for the #ClutterClickAction::clicked signal
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* @long_press: class handler for the #ClutterClickAction::long-press signal
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*
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* The <structname>ClutterClickActionClass</structname> structure
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* contains only private data
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*
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* Since: 1.4
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*/
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struct _ClutterClickActionClass
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{
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/*< private >*/
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ClutterActionClass parent_class;
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/*< public >*/
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void (* clicked) (ClutterClickAction *action,
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ClutterActor *actor);
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gboolean (* long_press) (ClutterClickAction *action,
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ClutterActor *actor,
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ClutterLongPressState state);
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/*< private >*/
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void (* _clutter_click_action1) (void);
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void (* _clutter_click_action2) (void);
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void (* _clutter_click_action3) (void);
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void (* _clutter_click_action4) (void);
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void (* _clutter_click_action5) (void);
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void (* _clutter_click_action6) (void);
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void (* _clutter_click_action7) (void);
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};
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GType clutter_click_action_get_type (void) G_GNUC_CONST;
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ClutterAction * clutter_click_action_new (void);
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guint clutter_click_action_get_button (ClutterClickAction *action);
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ClutterModifierType clutter_click_action_get_state (ClutterClickAction *action);
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void clutter_click_action_get_coords (ClutterClickAction *action,
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gfloat *press_x,
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gfloat *press_y);
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void clutter_click_action_release (ClutterClickAction *action);
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G_END_DECLS
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#endif /* __CLUTTER_CLICK_ACTION_H__ */
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