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51a3e49c82
Embedding toolkits most likely will disable the event handling, so all
the input device code will not be executed. Unfortunately, the newly
added synthetic event generation of ENTER and LEAVE event pairs depends
on having input devices.
In order to unbreak things without reintroducing the madness of the
previous code we should allow embedding toolkits to just update the
state of an InputDevice by using the data contained inside the
ClutterEvent. This strategy has two obvious reasons:
• the embedding toolkit is creating a ClutterEvent by translating
a toolkit-native event anyway
• this is exactly what ClutterStage does when processing events
We are, essentially, deferring input device handling to the embedding
toolkits, just like we're deferring event handling to them.
105 lines
3.9 KiB
C
105 lines
3.9 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) 2009 Intel Corp.
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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: Emmanuele Bassi <ebassi@linux.intel.com>
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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_INPUT_DEVICE_H__
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#define __CLUTTER_INPUT_DEVICE_H__
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#include <clutter/clutter-types.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_INPUT_DEVICE (clutter_input_device_get_type ())
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#define CLUTTER_INPUT_DEVICE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_INPUT_DEVICE, ClutterInputDevice))
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#define CLUTTER_IS_INPUT_DEVICE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_INPUT_DEVICE))
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#define CLUTTER_INPUT_DEVICE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_INPUT_DEVICE, ClutterInputDeviceClass))
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#define CLUTTER_IS_INPUT_DEVICE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_INPUT_DEVICE))
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#define CLUTTER_INPUT_DEVICE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_INPUT_DEVICE, ClutterInputDeviceClass))
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/**
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* ClutterInputDevice:
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*
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* Generic representation of an input device. The actual contents of this
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* structure depend on the backend used.
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*/
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typedef struct _ClutterInputDevice ClutterInputDevice;
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typedef struct _ClutterInputDeviceClass ClutterInputDeviceClass;
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/**
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* ClutterInputDeviceType:
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* @CLUTTER_POINTER_DEVICE: A pointer device
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* @CLUTTER_KEYBOARD_DEVICE: A keyboard device
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* @CLUTTER_EXTENSION_DEVICE: A generic extension device
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* @CLUTTER_N_DEVICE_TYPES: The number of device types
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*
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* The types of input devices available.
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*
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* The #ClutterInputDeviceType enumeration can be extended at later
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* date; not every platform supports every input device type.
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*
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* Since: 1.0
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*/
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typedef enum {
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CLUTTER_POINTER_DEVICE,
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CLUTTER_KEYBOARD_DEVICE,
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CLUTTER_EXTENSION_DEVICE,
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CLUTTER_N_DEVICE_TYPES
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} ClutterInputDeviceType;
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/**
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* ClutterInputDeviceClass:
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*
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* The #ClutterInputDeviceClass structure contains only private
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* data and should not be accessed directly
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*
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* Since: 1.2
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*/
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struct _ClutterInputDeviceClass
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{
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/*< private >*/
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GObjectClass parent_class;
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};
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GType clutter_input_device_get_type (void) G_GNUC_CONST;
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ClutterInputDeviceType clutter_input_device_get_device_type (ClutterInputDevice *device);
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gint clutter_input_device_get_device_id (ClutterInputDevice *device);
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void clutter_input_device_get_device_coords (ClutterInputDevice *device,
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gint *x,
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gint *y);
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ClutterActor * clutter_input_device_get_pointer_actor (ClutterInputDevice *device);
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ClutterStage * clutter_input_device_get_pointer_stage (ClutterInputDevice *device);
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G_CONST_RETURN gchar * clutter_input_device_get_device_name (ClutterInputDevice *device);
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void clutter_input_device_update_from_event (ClutterInputDevice *device,
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ClutterEvent *event,
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gboolean update_stage);
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G_END_DECLS
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#endif /* __CLUTTER_INPUT_DEVICE_H__ */
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