ade02f958b
SugarEventController is an abstract object that attaches to a widget and interprets an arbitrary set of events. Implementations of that object get to define the sequence of events that trigger these. The basic touch gestures (long press, rotate, swipe, zoom) have been implemented on top of that object. Signed-off-by: Carlos Garnacho <carlos@lanedo.com> Acked-by: Simon Schampijer <simon@laptop.org>
66 lines
2.6 KiB
C
66 lines
2.6 KiB
C
/*
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* Copyright (C) 2012, One Laptop Per Child.
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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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author(s): Carlos Garnacho <carlos@lanedo.com>
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*/
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#if !defined (__SUGAR_CONTROLLERS_H_INSIDE__) && !defined (SUGAR_TOOLKIT_COMPILATION)
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#error "Only <sugar/event-controller/sugar-event-controllers.h> can be included directly."
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#endif
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#ifndef __SUGAR_ZOOM_CONTROLLER_H__
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#define __SUGAR_ZOOM_CONTROLLER_H__
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#include "sugar-event-controller.h"
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#include <gtk/gtk.h>
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G_BEGIN_DECLS
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#define SUGAR_TYPE_ZOOM_CONTROLLER (sugar_zoom_controller_get_type ())
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#define SUGAR_ZOOM_CONTROLLER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), SUGAR_TYPE_ZOOM_CONTROLLER, SugarZoomController))
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#define SUGAR_ZOOM_CONTROLLER_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), SUGAR_TYPE_ZOOM_CONTROLLER, SugarZoomControllerClass))
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#define SUGAR_IS_ZOOM_CONTROLLER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), SUGAR_TYPE_ZOOM_CONTROLLER))
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#define SUGAR_IS_ZOOM_CONTROLLER_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), SUGAR_TYPE_ZOOM_CONTROLLER))
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#define SUGAR_ZOOM_CONTROLLER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), SUGAR_TYPE_ZOOM_CONTROLLER, SugarZoomControllerClass))
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typedef struct _SugarZoomController SugarZoomController;
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typedef struct _SugarZoomControllerClass SugarZoomControllerClass;
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struct _SugarZoomController
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{
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SugarEventController parent_instance;
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gpointer _priv;
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};
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struct _SugarZoomControllerClass
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{
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SugarEventControllerClass parent_class;
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void (* zoom_changed) (SugarZoomController *controller,
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gdouble zoom);
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};
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GType sugar_zoom_controller_get_type (void) G_GNUC_CONST;
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SugarEventController * sugar_zoom_controller_new (void);
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gboolean sugar_zoom_controller_get_zoom_delta (SugarZoomController *controller,
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gdouble *delta);
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G_END_DECLS
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#endif /* __SUGAR_ZOOM_CONTROLLER_H__ */
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