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b6dd306998
The grab API is a relic of Clutter 0.6, and hasn't been through proper vetting in a *long* time — mostly due to the fact that we don't really like grabs, and point to the ::captured-event as a way to implement "soft grabs" in toolkits and applications. The implementation of full and device grabs uses weak references on actors instead of using the ::destroy signal, which is meant exactly for the case of releasing pointers to actors when they are disposed. The API naming scheme is also fairly broken, especially for device-related grabs. Finally, keyboard device grabs are just not implemented. We can, in one go, clean up this mess and deprecate a bunch of badly named API by introducing generic device grab/ungrab methods on ClutterInputDevice, and re-implement the current API on top of them.
172 lines
6.9 KiB
C
172 lines
6.9 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) 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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#ifndef __CLUTTER_DEVICE_MANAGER_PRIVATE_H__
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#define __CLUTTER_DEVICE_MANAGER_PRIVATE_H__
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#include <clutter/clutter-backend.h>
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#include <clutter/clutter-device-manager.h>
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#include <clutter/clutter-event.h>
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G_BEGIN_DECLS
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typedef struct _ClutterAxisInfo
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{
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ClutterInputAxis axis;
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gdouble min_axis;
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gdouble max_axis;
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gdouble min_value;
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gdouble max_value;
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gdouble resolution;
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} ClutterAxisInfo;
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typedef struct _ClutterKeyInfo
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{
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guint keyval;
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ClutterModifierType modifiers;
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} ClutterKeyInfo;
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struct _ClutterInputDevice
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{
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GObject parent_instance;
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gint id;
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ClutterInputDeviceType device_type;
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ClutterInputMode device_mode;
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gchar *device_name;
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ClutterDeviceManager *device_manager;
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ClutterBackend *backend;
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/* the associated device */
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ClutterInputDevice *associated;
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GList *slaves;
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/* the actor underneath the pointer */
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ClutterActor *cursor_actor;
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/* the actor that has a grab in place for the device */
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ClutterActor *pointer_grab_actor;
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ClutterActor *keyboard_grab_actor;
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/* the current click count */
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gint click_count;
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/* the stage the device is on */
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ClutterStage *stage;
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/* the current state */
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gint current_x;
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gint current_y;
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guint32 current_time;
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gint current_button_number;
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ClutterModifierType current_state;
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/* the previous state, used for click count generation */
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gint previous_x;
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gint previous_y;
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guint32 previous_time;
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gint previous_button_number;
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ClutterModifierType previous_state;
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GArray *axes;
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guint n_keys;
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GArray *keys;
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guint has_cursor : 1;
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guint is_enabled : 1;
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};
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struct _ClutterInputDeviceClass
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{
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GObjectClass parent_class;
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void (* select_stage_events) (ClutterInputDevice *device,
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ClutterStage *stage,
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gint event_mask);
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};
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/* device manager */
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void _clutter_device_manager_add_device (ClutterDeviceManager *device_manager,
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ClutterInputDevice *device);
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void _clutter_device_manager_remove_device (ClutterDeviceManager *device_manager,
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ClutterInputDevice *device);
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void _clutter_device_manager_update_devices (ClutterDeviceManager *device_manager);
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void _clutter_device_manager_select_stage_events (ClutterDeviceManager *device_manager,
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ClutterStage *stage,
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gint event_mask);
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ClutterBackend *_clutter_device_manager_get_backend (ClutterDeviceManager *device_manager);
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/* input device */
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void _clutter_input_device_set_coords (ClutterInputDevice *device,
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gint x,
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gint y);
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void _clutter_input_device_set_state (ClutterInputDevice *device,
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ClutterModifierType state);
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void _clutter_input_device_set_time (ClutterInputDevice *device,
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guint32 time_);
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void _clutter_input_device_set_stage (ClutterInputDevice *device,
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ClutterStage *stage);
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void _clutter_input_device_set_actor (ClutterInputDevice *device,
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ClutterActor *actor,
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gboolean emit_crossing);
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ClutterActor * _clutter_input_device_update (ClutterInputDevice *device,
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gboolean emit_crossing);
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void _clutter_input_device_set_n_keys (ClutterInputDevice *device,
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guint n_keys);
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guint _clutter_input_device_add_axis (ClutterInputDevice *device,
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ClutterInputAxis axis,
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gdouble min_value,
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gdouble max_value,
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gdouble resolution);
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void _clutter_input_device_reset_axes (ClutterInputDevice *device);
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void _clutter_input_device_set_associated_device (ClutterInputDevice *device,
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ClutterInputDevice *associated);
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void _clutter_input_device_add_slave (ClutterInputDevice *master,
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ClutterInputDevice *slave);
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void _clutter_input_device_remove_slave (ClutterInputDevice *master,
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ClutterInputDevice *slave);
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void _clutter_input_device_select_stage_events (ClutterInputDevice *device,
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ClutterStage *stage,
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gint event_flags);
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gboolean _clutter_input_device_translate_axis (ClutterInputDevice *device,
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guint index_,
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gdouble value,
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gdouble *axis_value);
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G_END_DECLS
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#endif /* __CLUTTER_DEVICE_MANAGER_PRIVATE_H__ */
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