/* * Clutter. * * An OpenGL based 'interactive canvas' library. * * Authored By Matthew Allum * * Copyright (C) 2006 OpenedHand * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see . * * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "clutter-backend-private.h" #include "clutter-debug.h" #include "clutter-event-private.h" #include "clutter-keysyms.h" #include "clutter-private.h" #include /** * SECTION:clutter-event * @short_description: User and window system events * * Windowing events handled by Clutter. * * The events usually come from the windowing backend, but can also * be synthesized by Clutter itself or by the application code. */ typedef struct _ClutterEventPrivate { ClutterEvent base; ClutterInputDevice *device; ClutterInputDevice *source_device; gdouble delta_x; gdouble delta_y; gpointer platform_data; ClutterModifierType button_state; ClutterModifierType base_state; ClutterModifierType latched_state; ClutterModifierType locked_state; guint is_pointer_emulated : 1; } ClutterEventPrivate; static GHashTable *all_events = NULL; G_DEFINE_BOXED_TYPE (ClutterEvent, clutter_event, clutter_event_copy, clutter_event_free); static gboolean is_event_allocated (const ClutterEvent *event) { if (all_events == NULL) return FALSE; return g_hash_table_lookup (all_events, event) != NULL; } /* * _clutter_event_get_platform_data: * @event: a #ClutterEvent * * Retrieves the pointer to platform-specific data inside an event * * Return value: a pointer to platform-specific data * * Since: 1.4 */ gpointer _clutter_event_get_platform_data (const ClutterEvent *event) { if (!is_event_allocated (event)) return NULL; return ((ClutterEventPrivate *) event)->platform_data; } /*< private > * _clutter_event_set_platform_data: * @event: a #ClutterEvent * @data: a pointer to platform-specific data * * Sets the pointer to platform-specific data inside an event * * Since: 1.4 */ void _clutter_event_set_platform_data (ClutterEvent *event, gpointer data) { if (!is_event_allocated (event)) return; ((ClutterEventPrivate *) event)->platform_data = data; } void _clutter_event_set_pointer_emulated (ClutterEvent *event, gboolean is_emulated) { if (!is_event_allocated (event)) return; ((ClutterEventPrivate *) event)->is_pointer_emulated = !!is_emulated; } /** * clutter_event_type: * @event: a #ClutterEvent * * Retrieves the type of the event. * * Return value: a #ClutterEventType */ ClutterEventType clutter_event_type (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, CLUTTER_NOTHING); return event->type; } /** * clutter_event_get_time: * @event: a #ClutterEvent * * Retrieves the time of the event. * * Return value: the time of the event, or %CLUTTER_CURRENT_TIME * * Since: 0.4 */ guint32 clutter_event_get_time (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, CLUTTER_CURRENT_TIME); return event->any.time; } /** * clutter_event_set_time: * @event: a #ClutterEvent * @time_: the time of the event * * Sets the time of the event. * * Since: 1.8 */ void clutter_event_set_time (ClutterEvent *event, guint32 time_) { g_return_if_fail (event != NULL); event->any.time = time_; } /** * clutter_event_get_state: * @event: a #ClutterEvent * * Retrieves the modifier state of the event. In case the window system * supports reporting latched and locked modifiers, this function returns * the effective state. * * Return value: the modifier state parameter, or 0 * * Since: 0.4 */ ClutterModifierType clutter_event_get_state (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, 0); switch (event->type) { case CLUTTER_KEY_PRESS: case CLUTTER_KEY_RELEASE: return event->key.modifier_state; case CLUTTER_BUTTON_PRESS: case CLUTTER_BUTTON_RELEASE: return event->button.modifier_state; case CLUTTER_TOUCH_BEGIN: case CLUTTER_TOUCH_UPDATE: case CLUTTER_TOUCH_END: case CLUTTER_TOUCH_CANCEL: return event->touch.modifier_state; case CLUTTER_MOTION: return event->motion.modifier_state; case CLUTTER_SCROLL: return event->scroll.modifier_state; default: break; } return 0; } /** * clutter_event_set_state: * @event: a #ClutterEvent * @state: the modifier state to set * * Sets the modifier state of the event. * * Since: 1.8 */ void clutter_event_set_state (ClutterEvent *event, ClutterModifierType state) { g_return_if_fail (event != NULL); switch (event->type) { case CLUTTER_KEY_PRESS: case CLUTTER_KEY_RELEASE: event->key.modifier_state = state; break; case CLUTTER_BUTTON_PRESS: case CLUTTER_BUTTON_RELEASE: event->button.modifier_state = state; break; case CLUTTER_MOTION: event->motion.modifier_state = state; break; case CLUTTER_TOUCH_BEGIN: case CLUTTER_TOUCH_UPDATE: case CLUTTER_TOUCH_END: case CLUTTER_TOUCH_CANCEL: event->touch.modifier_state = state; break; case CLUTTER_SCROLL: event->scroll.modifier_state = state; break; default: break; } } void _clutter_event_set_state_full (ClutterEvent *event, ClutterModifierType button_state, ClutterModifierType base_state, ClutterModifierType latched_state, ClutterModifierType locked_state, ClutterModifierType effective_state) { ClutterEventPrivate *private = (ClutterEventPrivate*) event; private->button_state = button_state; private->base_state = base_state; private->latched_state = latched_state; private->locked_state = locked_state; clutter_event_set_state (event, effective_state); } /** * clutter_event_get_state_full: * @event: a #ClutterEvent * @button_state: (out) (allow-none): the pressed buttons as a mask * @base_state: (out) (allow-none): the regular pressed modifier keys * @latched_state: (out) (allow-none): the latched modifier keys (currently released but still valid for one key press/release) * @locked_state: (out) (allow-none): the locked modifier keys (valid until the lock key is pressed and released again) * @effective_state: (out) (allow-none): the logical OR of all the state bits above * * Retrieves the decomposition of the keyboard state into button, base, * latched, locked and effective. This can be used to transmit to other * applications, for example when implementing a wayland compositor. * * Since: 1.16 */ void clutter_event_get_state_full (const ClutterEvent *event, ClutterModifierType *button_state, ClutterModifierType *base_state, ClutterModifierType *latched_state, ClutterModifierType *locked_state, ClutterModifierType *effective_state) { const ClutterEventPrivate *private = (const ClutterEventPrivate*) event; g_return_if_fail (event != NULL); if (button_state) *button_state = private->button_state; if (base_state) *base_state = private->base_state; if (latched_state) *latched_state = private->latched_state; if (locked_state) *locked_state = private->locked_state; if (effective_state) *effective_state = clutter_event_get_state (event); } /** * clutter_event_get_coords: * @event: a #ClutterEvent * @x: (out): return location for the X coordinate, or %NULL * @y: (out): return location for the Y coordinate, or %NULL * * Retrieves the coordinates of @event and puts them into @x and @y. * * Since: 0.4 */ void clutter_event_get_coords (const ClutterEvent *event, gfloat *x, gfloat *y) { ClutterPoint coords; g_return_if_fail (event != NULL); clutter_event_get_position (event, &coords); if (x != NULL) *x = coords.x; if (y != NULL) *y = coords.y; } /** * clutter_event_get_position: * @event: a #ClutterEvent * @position: a #ClutterPoint * * Retrieves the event coordinates as a #ClutterPoint. * * Since: 1.12 */ void clutter_event_get_position (const ClutterEvent *event, ClutterPoint *position) { g_return_if_fail (event != NULL); g_return_if_fail (position != NULL); switch (event->type) { case CLUTTER_NOTHING: case CLUTTER_KEY_PRESS: case CLUTTER_KEY_RELEASE: case CLUTTER_STAGE_STATE: case CLUTTER_DESTROY_NOTIFY: case CLUTTER_CLIENT_MESSAGE: case CLUTTER_DELETE: case CLUTTER_EVENT_LAST: clutter_point_init (position, 0.f, 0.f); break; case CLUTTER_ENTER: case CLUTTER_LEAVE: clutter_point_init (position, event->crossing.x, event->crossing.y); break; case CLUTTER_BUTTON_PRESS: case CLUTTER_BUTTON_RELEASE: clutter_point_init (position, event->button.x, event->button.y); break; case CLUTTER_MOTION: clutter_point_init (position, event->motion.x, event->motion.y); break; case CLUTTER_TOUCH_BEGIN: case CLUTTER_TOUCH_UPDATE: case CLUTTER_TOUCH_END: case CLUTTER_TOUCH_CANCEL: clutter_point_init (position, event->touch.x, event->touch.y); break; case CLUTTER_SCROLL: clutter_point_init (position, event->scroll.x, event->scroll.y); break; } } /** * clutter_event_set_coords: * @event: a #ClutterEvent * @x: the X coordinate of the event * @y: the Y coordinate of the event * * Sets the coordinates of the @event. * * Since: 1.8 */ void clutter_event_set_coords (ClutterEvent *event, gfloat x, gfloat y) { g_return_if_fail (event != NULL); switch (event->type) { case CLUTTER_NOTHING: case CLUTTER_KEY_PRESS: case CLUTTER_KEY_RELEASE: case CLUTTER_STAGE_STATE: case CLUTTER_DESTROY_NOTIFY: case CLUTTER_CLIENT_MESSAGE: case CLUTTER_DELETE: case CLUTTER_EVENT_LAST: break; case CLUTTER_ENTER: case CLUTTER_LEAVE: event->crossing.x = x; event->crossing.y = y; break; case CLUTTER_BUTTON_PRESS: case CLUTTER_BUTTON_RELEASE: event->button.x = x; event->button.y = y; break; case CLUTTER_MOTION: event->motion.x = x; event->motion.y = y; break; case CLUTTER_TOUCH_BEGIN: case CLUTTER_TOUCH_UPDATE: case CLUTTER_TOUCH_END: case CLUTTER_TOUCH_CANCEL: event->touch.x = x; event->touch.y = y; break; case CLUTTER_SCROLL: event->scroll.x = x; event->scroll.y = y; break; } } /** * clutter_event_get_source: * @event: a #ClutterEvent * * Retrieves the source #ClutterActor the event originated from, or * NULL if the event has no source. * * Return value: (transfer none): a #ClutterActor * * Since: 0.6 */ ClutterActor * clutter_event_get_source (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, NULL); return event->any.source; } /** * clutter_event_set_source: * @event: a #ClutterEvent * @actor: (allow-none): a #ClutterActor, or %NULL * * Sets the source #ClutterActor of @event. * * Since: 1.8 */ void clutter_event_set_source (ClutterEvent *event, ClutterActor *actor) { g_return_if_fail (event != NULL); g_return_if_fail (actor == NULL || CLUTTER_IS_ACTOR (actor)); event->any.source = actor; } /** * clutter_event_get_stage: * @event: a #ClutterEvent * * Retrieves the source #ClutterStage the event originated for, or * %NULL if the event has no stage. * * Return value: (transfer none): a #ClutterStage * * Since: 0.8 */ ClutterStage * clutter_event_get_stage (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, NULL); return event->any.stage; } /** * clutter_event_set_stage: * @event: a #ClutterEvent * @stage: (allow-none): a #ClutterStage, or %NULL * * Sets the source #ClutterStage of the event. * * Since: 1.8 */ void clutter_event_set_stage (ClutterEvent *event, ClutterStage *stage) { g_return_if_fail (event != NULL); g_return_if_fail (stage == NULL || CLUTTER_IS_STAGE (stage)); if (event->any.stage == stage) return; event->any.stage = stage; } /** * clutter_event_get_flags: * @event: a #ClutterEvent * * Retrieves the #ClutterEventFlags of @event * * Return value: the event flags * * Since: 1.0 */ ClutterEventFlags clutter_event_get_flags (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, CLUTTER_EVENT_NONE); return event->any.flags; } /** * clutter_event_set_flags: * @event: a #ClutterEvent * @flags: a binary OR of #ClutterEventFlags values * * Sets the #ClutterEventFlags of @event * * Since: 1.8 */ void clutter_event_set_flags (ClutterEvent *event, ClutterEventFlags flags) { g_return_if_fail (event != NULL); if (event->any.flags == flags) return; event->any.flags = flags; event->any.flags |= CLUTTER_EVENT_FLAG_SYNTHETIC; } /** * clutter_event_get_related: * @event: a #ClutterEvent of type %CLUTTER_ENTER or of * type %CLUTTER_LEAVE * * Retrieves the related actor of a crossing event. * * Return value: (transfer none): the related #ClutterActor, or %NULL * * Since: 1.0 */ ClutterActor * clutter_event_get_related (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, NULL); g_return_val_if_fail (event->type == CLUTTER_ENTER || event->type == CLUTTER_LEAVE, NULL); return event->crossing.related; } /** * clutter_event_set_related: * @event: a #ClutterEvent of type %CLUTTER_ENTER or %CLUTTER_LEAVE * @actor: (allow-none): a #ClutterActor or %NULL * * Sets the related actor of a crossing event * * Since: 1.8 */ void clutter_event_set_related (ClutterEvent *event, ClutterActor *actor) { g_return_if_fail (event != NULL); g_return_if_fail (event->type == CLUTTER_ENTER || event->type == CLUTTER_LEAVE); g_return_if_fail (actor == NULL || CLUTTER_IS_ACTOR (actor)); if (event->crossing.related == actor) return; event->crossing.related = actor; } /** * clutter_event_set_scroll_delta: * @event: a #ClutterEvent of type %CLUTTER_SCROLL * @dx: delta on the horizontal axis * @dy: delta on the vertical axis * * Sets the precise scrolling information of @event. * * Since: 1.10 */ void clutter_event_set_scroll_delta (ClutterEvent *event, gdouble dx, gdouble dy) { g_return_if_fail (event != NULL); g_return_if_fail (event->type == CLUTTER_SCROLL); if (!is_event_allocated (event)) return; event->scroll.direction = CLUTTER_SCROLL_SMOOTH; ((ClutterEventPrivate *) event)->delta_x = dx; ((ClutterEventPrivate *) event)->delta_y = dy; } /** * clutter_event_get_scroll_delta: * @event: a #ClutterEvent of type %CLUTTER_SCROLL * @dx: (out): return location for the delta on the horizontal axis * @dy: (out): return location for the delta on the vertical axis * * Retrieves the precise scrolling information of @event. * * The @event has to have a #ClutterScrollEvent.direction value * of %CLUTTER_SCROLL_SMOOTH. * * Since: 1.10 */ void clutter_event_get_scroll_delta (const ClutterEvent *event, gdouble *dx, gdouble *dy) { gdouble delta_x, delta_y; g_return_if_fail (event != NULL); g_return_if_fail (event->type == CLUTTER_SCROLL); g_return_if_fail (event->scroll.direction == CLUTTER_SCROLL_SMOOTH); delta_x = delta_y = 0; if (is_event_allocated (event)) { delta_x = ((ClutterEventPrivate *) event)->delta_x; delta_y = ((ClutterEventPrivate *) event)->delta_y; } if (dx != NULL) *dx = delta_x; if (dy != NULL) *dy = delta_y; } /** * clutter_event_get_scroll_direction: * @event: a #ClutterEvent of type %CLUTTER_SCROLL * * Retrieves the direction of the scrolling of @event * * Return value: the scrolling direction * * Since: 1.0 */ ClutterScrollDirection clutter_event_get_scroll_direction (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, CLUTTER_SCROLL_UP); g_return_val_if_fail (event->type == CLUTTER_SCROLL, CLUTTER_SCROLL_UP); return event->scroll.direction; } /** * clutter_event_set_scroll_direction: * @event: a #ClutterEvent * @direction: the scrolling direction * * Sets the direction of the scrolling of @event * * Since: 1.8 */ void clutter_event_set_scroll_direction (ClutterEvent *event, ClutterScrollDirection direction) { g_return_if_fail (event != NULL); g_return_if_fail (event->type == CLUTTER_SCROLL); event->scroll.direction = direction; } /** * clutter_event_get_button: * @event: a #ClutterEvent of type %CLUTTER_BUTTON_PRESS or * of type %CLUTTER_BUTTON_RELEASE * * Retrieves the button number of @event * * Return value: the button number * * Since: 1.0 */ guint32 clutter_event_get_button (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, 0); g_return_val_if_fail (event->type == CLUTTER_BUTTON_PRESS || event->type == CLUTTER_BUTTON_RELEASE, 0); return event->button.button; } /** * clutter_event_set_button: * @event: a #ClutterEvent or type %CLUTTER_BUTTON_PRESS or * of type %CLUTTER_BUTTON_RELEASE * @button: the button number * * Sets the button number of @event * * Since: 1.8 */ void clutter_event_set_button (ClutterEvent *event, guint32 button) { g_return_if_fail (event != NULL); g_return_if_fail (event->type == CLUTTER_BUTTON_PRESS || event->type == CLUTTER_BUTTON_RELEASE); event->button.button = button; } /** * clutter_event_get_click_count: * @event: a #ClutterEvent of type %CLUTTER_BUTTON_PRESS or * of type %CLUTTER_BUTTON_RELEASE * * Retrieves the number of clicks of @event * * Return value: the click count * * Since: 1.0 */ guint32 clutter_event_get_click_count (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, 0); g_return_val_if_fail (event->type == CLUTTER_BUTTON_PRESS || event->type == CLUTTER_BUTTON_RELEASE, 0); return event->button.click_count; } /* keys */ /** * clutter_event_get_key_symbol: * @event: a #ClutterEvent of type %CLUTTER_KEY_PRESS or * of type %CLUTTER_KEY_RELEASE * * Retrieves the key symbol of @event * * Return value: the key symbol representing the key * * Since: 1.0 */ guint clutter_event_get_key_symbol (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, 0); g_return_val_if_fail (event->type == CLUTTER_KEY_PRESS || event->type == CLUTTER_KEY_RELEASE, 0); return event->key.keyval; } /** * clutter_event_set_key_symbol: * @event: a #ClutterEvent of type %CLUTTER_KEY_PRESS * or %CLUTTER_KEY_RELEASE * @key_sym: the key symbol representing the key * * Sets the key symbol of @event. * * Since: 1.8 */ void clutter_event_set_key_symbol (ClutterEvent *event, guint key_sym) { g_return_if_fail (event != NULL); g_return_if_fail (event->type == CLUTTER_KEY_PRESS || event->type == CLUTTER_KEY_RELEASE); event->key.keyval = key_sym; } /** * clutter_event_get_key_code: * @event: a #ClutterEvent of type %CLUTTER_KEY_PRESS or * of type %CLUTTER_KEY_RELEASE * * Retrieves the keycode of the key that caused @event * * Return value: The keycode representing the key * * Since: 1.0 */ guint16 clutter_event_get_key_code (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, 0); g_return_val_if_fail (event->type == CLUTTER_KEY_PRESS || event->type == CLUTTER_KEY_RELEASE, 0); return event->key.hardware_keycode; } /** * clutter_event_set_key_code: * @event: a #ClutterEvent of type %CLUTTER_KEY_PRESS * or %CLUTTER_KEY_RELEASE * @key_code: the keycode representing the key * * Sets the keycode of the @event. * * Since: 1.8 */ void clutter_event_set_key_code (ClutterEvent *event, guint16 key_code) { g_return_if_fail (event != NULL); g_return_if_fail (event->type == CLUTTER_KEY_PRESS || event->type == CLUTTER_KEY_RELEASE); event->key.hardware_keycode = key_code; } /** * clutter_event_get_key_unicode: * @event: a #ClutterEvent of type %CLUTTER_KEY_PRESS * or %CLUTTER_KEY_RELEASE * * Retrieves the unicode value for the key that caused @keyev. * * Return value: The unicode value representing the key */ gunichar clutter_event_get_key_unicode (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, 0); g_return_val_if_fail (event->type == CLUTTER_KEY_PRESS || event->type == CLUTTER_KEY_RELEASE, 0); if (event->key.unicode_value) return event->key.unicode_value; else return clutter_keysym_to_unicode (event->key.keyval); } /** * clutter_event_set_key_unicode: * @event: a #ClutterEvent of type %CLUTTER_KEY_PRESS * or %CLUTTER_KEY_RELEASE * @key_unicode: the Unicode value representing the key * * Sets the Unicode value of @event. * * Since: 1.8 */ void clutter_event_set_key_unicode (ClutterEvent *event, gunichar key_unicode) { g_return_if_fail (event != NULL); g_return_if_fail (event->type == CLUTTER_KEY_PRESS || event->type == CLUTTER_KEY_RELEASE); event->key.unicode_value = key_unicode; } /** * clutter_event_get_event_sequence: * @event: a #ClutterEvent of type %CLUTTER_TOUCH_BEGIN, * %CLUTTER_TOUCH_UPDATE, %CLUTTER_TOUCH_END, or * %CLUTTER_TOUCH_CANCEL * * Retrieves the #ClutterEventSequence of @event. * * Return value: (transfer none): the event sequence, or %NULL * * Since: 1.10 */ ClutterEventSequence * clutter_event_get_event_sequence (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, NULL); if (event->type == CLUTTER_TOUCH_BEGIN || event->type == CLUTTER_TOUCH_UPDATE || event->type == CLUTTER_TOUCH_END || event->type == CLUTTER_TOUCH_CANCEL) return event->touch.sequence; return NULL; } /** * clutter_event_get_device_id: * @event: a clutter event * * Retrieves the events device id if set. * * Return value: A unique identifier for the device or -1 if the event has * no specific device set. */ gint clutter_event_get_device_id (const ClutterEvent *event) { ClutterInputDevice *device = NULL; g_return_val_if_fail (event != NULL, CLUTTER_POINTER_DEVICE); device = clutter_event_get_device (event); if (device != NULL) return clutter_input_device_get_device_id (device); return -1; } /** * clutter_event_get_device_type: * @event: a #ClutterEvent * * Retrieves the type of the device for @event * * Return value: the #ClutterInputDeviceType for the device, if * any is set * * Since: 1.0 */ ClutterInputDeviceType clutter_event_get_device_type (const ClutterEvent *event) { ClutterInputDevice *device = NULL; g_return_val_if_fail (event != NULL, CLUTTER_POINTER_DEVICE); device = clutter_event_get_device (event); if (device != NULL) return clutter_input_device_get_device_type (device); return CLUTTER_POINTER_DEVICE; } /** * clutter_event_set_device: * @event: a #ClutterEvent * @device: (allow-none): a #ClutterInputDevice, or %NULL * * Sets the device for @event. * * Since: 1.6 */ void clutter_event_set_device (ClutterEvent *event, ClutterInputDevice *device) { g_return_if_fail (event != NULL); g_return_if_fail (device == NULL || CLUTTER_IS_INPUT_DEVICE (device)); if (is_event_allocated (event)) { ClutterEventPrivate *real_event = (ClutterEventPrivate *) event; real_event->device = device; } switch (event->type) { case CLUTTER_NOTHING: case CLUTTER_STAGE_STATE: case CLUTTER_DESTROY_NOTIFY: case CLUTTER_CLIENT_MESSAGE: case CLUTTER_DELETE: case CLUTTER_EVENT_LAST: break; case CLUTTER_ENTER: case CLUTTER_LEAVE: event->crossing.device = device; break; case CLUTTER_BUTTON_PRESS: case CLUTTER_BUTTON_RELEASE: event->button.device = device; break; case CLUTTER_MOTION: event->motion.device = device; break; case CLUTTER_SCROLL: event->scroll.device = device; break; case CLUTTER_TOUCH_BEGIN: case CLUTTER_TOUCH_UPDATE: case CLUTTER_TOUCH_END: case CLUTTER_TOUCH_CANCEL: event->touch.device = device; break; case CLUTTER_KEY_PRESS: case CLUTTER_KEY_RELEASE: event->key.device = device; break; } } /** * clutter_event_get_device: * @event: a #ClutterEvent * * Retrieves the #ClutterInputDevice for the event. * If you want the physical device the event originated from, use * clutter_event_get_source_device(). * * The #ClutterInputDevice structure is completely opaque and should * be cast to the platform-specific implementation. * * Return value: (transfer none): the #ClutterInputDevice or %NULL. The * returned device is owned by the #ClutterEvent and it should not * be unreferenced * * Since: 1.0 */ ClutterInputDevice * clutter_event_get_device (const ClutterEvent *event) { ClutterInputDevice *device = NULL; g_return_val_if_fail (event != NULL, NULL); if (is_event_allocated (event)) { ClutterEventPrivate *real_event = (ClutterEventPrivate *) event; if (real_event->device != NULL) return real_event->device; } switch (event->type) { case CLUTTER_NOTHING: case CLUTTER_STAGE_STATE: case CLUTTER_DESTROY_NOTIFY: case CLUTTER_CLIENT_MESSAGE: case CLUTTER_DELETE: case CLUTTER_EVENT_LAST: break; case CLUTTER_ENTER: case CLUTTER_LEAVE: device = event->crossing.device; break; case CLUTTER_BUTTON_PRESS: case CLUTTER_BUTTON_RELEASE: device = event->button.device; break; case CLUTTER_MOTION: device = event->motion.device; break; case CLUTTER_SCROLL: device = event->scroll.device; break; case CLUTTER_TOUCH_BEGIN: case CLUTTER_TOUCH_UPDATE: case CLUTTER_TOUCH_END: case CLUTTER_TOUCH_CANCEL: device = event->touch.device; break; case CLUTTER_KEY_PRESS: case CLUTTER_KEY_RELEASE: device = event->key.device; break; } return device; } /** * clutter_event_new: * @type: The type of event. * * Creates a new #ClutterEvent of the specified type. * * Return value: (transfer full): A newly allocated #ClutterEvent. */ ClutterEvent * clutter_event_new (ClutterEventType type) { ClutterEvent *new_event; ClutterEventPrivate *priv; priv = g_slice_new0 (ClutterEventPrivate); new_event = (ClutterEvent *) priv; new_event->type = new_event->any.type = type; if (G_UNLIKELY (all_events == NULL)) all_events = g_hash_table_new (NULL, NULL); g_hash_table_replace (all_events, priv, GUINT_TO_POINTER (1)); return new_event; } /** * clutter_event_copy: * @event: A #ClutterEvent. * * Copies @event. * * Return value: (transfer full): A newly allocated #ClutterEvent */ ClutterEvent * clutter_event_copy (const ClutterEvent *event) { ClutterEvent *new_event; ClutterEventPrivate *new_real_event; ClutterInputDevice *device; gint n_axes = 0; g_return_val_if_fail (event != NULL, NULL); new_event = clutter_event_new (CLUTTER_NOTHING); new_real_event = (ClutterEventPrivate *) new_event; *new_event = *event; if (is_event_allocated (event)) { ClutterEventPrivate *real_event = (ClutterEventPrivate *) event; new_real_event->device = real_event->device; new_real_event->source_device = real_event->source_device; new_real_event->delta_x = real_event->delta_x; new_real_event->delta_y = real_event->delta_y; new_real_event->is_pointer_emulated = real_event->is_pointer_emulated; new_real_event->base_state = real_event->base_state; new_real_event->button_state = real_event->button_state; new_real_event->latched_state = real_event->latched_state; new_real_event->locked_state = real_event->locked_state; } device = clutter_event_get_device (event); if (device != NULL) n_axes = clutter_input_device_get_n_axes (device); switch (event->type) { case CLUTTER_BUTTON_PRESS: case CLUTTER_BUTTON_RELEASE: if (event->button.axes != NULL) new_event->button.axes = g_memdup (event->button.axes, sizeof (gdouble) * n_axes); break; case CLUTTER_SCROLL: if (event->scroll.axes != NULL) new_event->scroll.axes = g_memdup (event->scroll.axes, sizeof (gdouble) * n_axes); break; case CLUTTER_MOTION: if (event->motion.axes != NULL) new_event->motion.axes = g_memdup (event->motion.axes, sizeof (gdouble) * n_axes); break; case CLUTTER_TOUCH_BEGIN: case CLUTTER_TOUCH_UPDATE: case CLUTTER_TOUCH_END: case CLUTTER_TOUCH_CANCEL: if (event->touch.axes != NULL) new_event->touch.axes = g_memdup (event->touch.axes, sizeof (gdouble) * n_axes); break; default: break; } if (is_event_allocated (event)) _clutter_backend_copy_event_data (clutter_get_default_backend (), event, new_event); return new_event; } /** * clutter_event_free: * @event: A #ClutterEvent. * * Frees all resources used by @event. */ void clutter_event_free (ClutterEvent *event) { if (G_LIKELY (event != NULL)) { _clutter_backend_free_event_data (clutter_get_default_backend (), event); switch (event->type) { case CLUTTER_BUTTON_PRESS: case CLUTTER_BUTTON_RELEASE: g_free (event->button.axes); break; case CLUTTER_MOTION: g_free (event->motion.axes); break; case CLUTTER_SCROLL: g_free (event->scroll.axes); break; case CLUTTER_TOUCH_BEGIN: case CLUTTER_TOUCH_UPDATE: case CLUTTER_TOUCH_END: case CLUTTER_TOUCH_CANCEL: g_free (event->touch.axes); break; default: break; } g_hash_table_remove (all_events, event); g_slice_free (ClutterEventPrivate, (ClutterEventPrivate *) event); } } /** * clutter_event_get: * * Pops an event off the event queue. Applications should not need to call * this. * * Return value: A #ClutterEvent or NULL if queue empty * * Since: 0.4 */ ClutterEvent * clutter_event_get (void) { ClutterMainContext *context = _clutter_context_get_default (); if (context->events_queue == NULL) return NULL; if (g_queue_is_empty (context->events_queue)) return NULL; return g_queue_pop_tail (context->events_queue); } /** * clutter_event_peek: * * Returns a pointer to the first event from the event queue but * does not remove it. * * Return value: (transfer none): A #ClutterEvent or NULL if queue empty. * * Since: 0.4 */ ClutterEvent * clutter_event_peek (void) { ClutterMainContext *context = _clutter_context_get_default (); g_return_val_if_fail (context != NULL, NULL); if (context->events_queue == NULL) return NULL; if (g_queue_is_empty (context->events_queue)) return NULL; return g_queue_peek_tail (context->events_queue); } void _clutter_event_push (const ClutterEvent *event, gboolean do_copy) { ClutterMainContext *context = _clutter_context_get_default (); ClutterInputDevice *device; g_assert (context != NULL); if (context->events_queue == NULL) context->events_queue = g_queue_new (); /* disabled devices don't propagate events */ device = clutter_event_get_device (event); if (device != NULL) { if (!clutter_input_device_get_enabled (device)) return; } if (do_copy) { ClutterEvent *copy; copy = clutter_event_copy (event); event = copy; } g_queue_push_head (context->events_queue, (gpointer) event); } /** * clutter_event_put: * @event: a #ClutterEvent * * Puts a copy of the event on the back of the event queue. The event will * have the %CLUTTER_EVENT_FLAG_SYNTHETIC flag set. If the source is set * event signals will be emitted for this source and capture/bubbling for * its ancestors. If the source is not set it will be generated by picking * or use the actor that currently has keyboard focus * * Since: 0.6 */ void clutter_event_put (const ClutterEvent *event) { _clutter_event_push (event, TRUE); } /** * clutter_events_pending: * * Checks if events are pending in the event queue. * * Return value: TRUE if there are pending events, FALSE otherwise. * * Since: 0.4 */ gboolean clutter_events_pending (void) { ClutterMainContext *context = _clutter_context_get_default (); g_return_val_if_fail (context != NULL, FALSE); if (context->events_queue == NULL) return FALSE; return g_queue_is_empty (context->events_queue) == FALSE; } /** * clutter_get_current_event_time: * * Retrieves the timestamp of the last event, if there is an * event or if the event has a timestamp. * * Return value: the event timestamp, or %CLUTTER_CURRENT_TIME * * Since: 1.0 */ guint32 clutter_get_current_event_time (void) { const ClutterEvent* event; event = clutter_get_current_event (); if (event != NULL) return clutter_event_get_time (event); return CLUTTER_CURRENT_TIME; } /** * clutter_get_current_event: * * If an event is currently being processed, return that event. * This function is intended to be used to access event state * that might not be exposed by higher-level widgets. For * example, to get the key modifier state from a Button 'clicked' * event. * * Return value: (transfer none): The current ClutterEvent, or %NULL if none * * Since: 1.2 */ const ClutterEvent * clutter_get_current_event (void) { ClutterMainContext *context = _clutter_context_get_default (); g_return_val_if_fail (context != NULL, NULL); return context->current_event != NULL ? context->current_event->data : NULL; } /** * clutter_event_get_source_device: * @event: a #ClutterEvent * * Retrieves the hardware device that originated the event. * * If you need the virtual device, use clutter_event_get_device(). * * If no hardware device originated this event, this function will * return the same device as clutter_event_get_device(). * * Return value: (transfer none): a pointer to a #ClutterInputDevice * or %NULL * * Since: 1.6 */ ClutterInputDevice * clutter_event_get_source_device (const ClutterEvent *event) { ClutterEventPrivate *real_event; if (!is_event_allocated (event)) return NULL; real_event = (ClutterEventPrivate *) event; if (real_event->source_device != NULL) return real_event->source_device; return clutter_event_get_device (event); } /** * clutter_event_set_source_device: * @event: a #ClutterEvent * @device: (allow-none): a #ClutterInputDevice * * Sets the source #ClutterInputDevice for @event. * * The #ClutterEvent must have been created using clutter_event_new(). * * Since: 1.8 */ void clutter_event_set_source_device (ClutterEvent *event, ClutterInputDevice *device) { ClutterEventPrivate *real_event; g_return_if_fail (event != NULL); g_return_if_fail (device == NULL || CLUTTER_IS_INPUT_DEVICE (device)); if (!is_event_allocated (event)) return; real_event = (ClutterEventPrivate *) event; real_event->source_device = device; } /** * clutter_event_get_axes: * @event: a #ClutterEvent * @n_axes: (out): return location for the number of axes returned * * Retrieves the array of axes values attached to the event. * * Return value: (transfer none): an array of axis values * * Since: 1.6 */ gdouble * clutter_event_get_axes (const ClutterEvent *event, guint *n_axes) { gdouble *retval = NULL; guint len = 0; switch (event->type) { case CLUTTER_NOTHING: case CLUTTER_STAGE_STATE: case CLUTTER_DESTROY_NOTIFY: case CLUTTER_CLIENT_MESSAGE: case CLUTTER_DELETE: case CLUTTER_ENTER: case CLUTTER_LEAVE: case CLUTTER_KEY_PRESS: case CLUTTER_KEY_RELEASE: case CLUTTER_EVENT_LAST: break; case CLUTTER_SCROLL: retval = event->scroll.axes; break; case CLUTTER_BUTTON_PRESS: case CLUTTER_BUTTON_RELEASE: retval = event->button.axes; break; case CLUTTER_TOUCH_BEGIN: case CLUTTER_TOUCH_UPDATE: case CLUTTER_TOUCH_END: case CLUTTER_TOUCH_CANCEL: retval = event->touch.axes; break; case CLUTTER_MOTION: retval = event->motion.axes; break; } if (retval != NULL) { ClutterInputDevice *device; device = clutter_event_get_device (event); if (device != NULL) len = clutter_input_device_get_n_axes (device); else retval = NULL; } if (n_axes) *n_axes = len; return retval; } /** * clutter_event_get_distance: * @source: a #ClutterEvent * @target: a #ClutterEvent * * Retrieves the distance between two events, a @source and a @target. * * Return value: the distance between two #ClutterEvent * * Since: 1.12 */ float clutter_event_get_distance (const ClutterEvent *source, const ClutterEvent *target) { ClutterPoint p0, p1; clutter_event_get_position (source, &p0); clutter_event_get_position (source, &p1); return clutter_point_distance (&p0, &p1, NULL, NULL); } /** * clutter_event_get_angle: * @source: a #ClutterEvent * @target: a #ClutterEvent * * Retrieves the angle relative from @source to @target. * * The direction of the angle is from the position X axis towards * the positive Y axis. * * Return value: the angle between two #ClutterEvent * * Since: 1.12 */ double clutter_event_get_angle (const ClutterEvent *source, const ClutterEvent *target) { ClutterPoint p0, p1; float x_distance, y_distance; double angle; clutter_event_get_position (source, &p0); clutter_event_get_position (target, &p1); if (clutter_point_equals (&p0, &p1)) return 0; clutter_point_distance (&p0, &p1, &x_distance, &y_distance); angle = atan2 (x_distance, y_distance); /* invert the angle, and shift it by 90 degrees */ angle = (2.0 * G_PI) - angle; angle += G_PI / 2.0; /* keep the angle within the [ 0, 360 ] interval */ angle = fmod (angle, 2.0 * G_PI); return angle; } /** * clutter_event_has_shift_modifier: * @event: a #ClutterEvent * * Checks whether @event has the Shift modifier mask set. * * Return value: %TRUE if the event has the Shift modifier mask set * * Since: 1.12 */ gboolean clutter_event_has_shift_modifier (const ClutterEvent *event) { return (clutter_event_get_state (event) & CLUTTER_SHIFT_MASK) != FALSE; } /** * clutter_event_has_control_modifier: * @event: a #ClutterEvent * * Checks whether @event has the Control modifier mask set. * * Return value: %TRUE if the event has the Control modifier mask set * * Since: 1.12 */ gboolean clutter_event_has_control_modifier (const ClutterEvent *event) { return (clutter_event_get_state (event) & CLUTTER_CONTROL_MASK) != FALSE; } /** * clutter_event_is_pointer_emulated: * @event: a #ClutterEvent * * Checks whether a pointer @event has been generated by the windowing * system. The returned value can be used to distinguish between events * synthesized by the windowing system itself (as opposed by Clutter). * * Return value: %TRUE if the event is pointer emulated * * Since: 1.12 */ gboolean clutter_event_is_pointer_emulated (const ClutterEvent *event) { g_return_val_if_fail (event != NULL, FALSE); if (!is_event_allocated (event)) return FALSE; return ((ClutterEventPrivate *) event)->is_pointer_emulated; }