d6a0f7eb61
803b3bafb6 introduced a new issue for
multi touch events.
In the case where 2 touch events for 2 different touch points are
processed in the same iteration, a call to
_clutter_stage_remove_device() when processing the first event will
remove the stage setting of the InputDevice. That means Clutter will
skip the second event, because it can't find a stage to which relate
the event, so no related actor and so no emission.
To fix this we move the _clutter_stage_(add/remove)_device() calls
into the input device. This way the input device can find out exactly
when to call these functions (i.e. when no touch point were previously
active or when no touch point remain active).
https://bugzilla.gnome.org/show_bug.cgi?id=682362
224 lines
9.6 KiB
C
224 lines
9.6 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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#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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typedef struct _ClutterScrollInfo
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{
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guint axis_id;
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ClutterScrollDirection direction;
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gdouble increment;
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gdouble last_value;
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guint last_value_valid : 1;
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} ClutterScrollInfo;
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typedef struct _ClutterTouchInfo
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{
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ClutterEventSequence *sequence;
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ClutterActor *actor;
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gint current_x;
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gint current_y;
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} ClutterTouchInfo;
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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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GHashTable *inv_touch_sequence_actors;
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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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GHashTable *sequence_grab_actors;
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GHashTable *inv_sequence_grab_actors;
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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 current touch points states */
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GHashTable *touch_sequences_info;
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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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GArray *scroll_info;
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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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gboolean (* keycode_to_evdev) (ClutterInputDevice *device,
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guint hardware_keycode,
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guint *evdev_keycode);
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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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gboolean _clutter_input_device_has_sequence (ClutterInputDevice *device,
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ClutterEventSequence *sequence);
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void _clutter_input_device_add_event_sequence (ClutterInputDevice *device,
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ClutterEvent *event);
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void _clutter_input_device_remove_event_sequence (ClutterInputDevice *device,
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ClutterEvent *event);
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void _clutter_input_device_set_coords (ClutterInputDevice *device,
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ClutterEventSequence *sequence,
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gint x,
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gint y,
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ClutterStage *stage);
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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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ClutterStage * _clutter_input_device_get_stage (ClutterInputDevice *device);
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void _clutter_input_device_set_actor (ClutterInputDevice *device,
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ClutterEventSequence *sequence,
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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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ClutterEventSequence *sequence,
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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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void _clutter_input_device_add_scroll_info (ClutterInputDevice *device,
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guint index_,
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ClutterScrollDirection direction,
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gdouble increment);
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void _clutter_input_device_reset_scroll_info (ClutterInputDevice *device);
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gboolean _clutter_input_device_get_scroll_delta (ClutterInputDevice *device,
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guint index_,
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gdouble value,
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ClutterScrollDirection *direction_p,
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gdouble *delta_p);
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G_END_DECLS
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#endif /* __CLUTTER_DEVICE_MANAGER_PRIVATE_H__ */
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