/* Clutter. * An OpenGL based 'interactive canvas' library. * * Copyright (C) 2006, 2007, 2008 OpenedHand Ltd * Copyright (C) 2009, 2010 Intel Corp. * 2011 Giovanni Campagna * * 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 . * * * * Authored by: * Matthew Allum * Emmanuele Bassi */ #include "config.h" #include "clutter-gdk.h" #include "clutter-backend-gdk.h" #include "clutter-device-manager-gdk.h" #include "clutter-actor-private.h" #include "clutter-backend-private.h" #include "clutter-debug.h" #include "clutter-device-manager-private.h" #include "clutter-event-private.h" #include "clutter-main.h" #include "clutter-paint-volume-private.h" #include "clutter-stage-private.h" #include #include /** * clutter_gdk_handle_event: * @event: a #GdkEvent * * This function processes a single GDK event; it can be used to hook * into external event processing * * Return value: #GdkFilterReturn. %GDK_FILTER_REMOVE indicates that * Clutter has internally handled the event and the caller should do * no further processing. %GDK_FILTER_CONTINUE indicates that Clutter * is either not interested in the event, or has used the event to * update internal state without taking any exclusive action. * %GDK_FILTER_TRANSLATE will not occur. * */ GdkFilterReturn clutter_gdk_handle_event (GdkEvent *gdk_event) { ClutterDeviceManager *device_manager; ClutterBackendGdk *backend_gdk; ClutterBackend *backend; ClutterStage *stage = NULL; ClutterEvent *event = NULL; gint spin = 0; GdkFilterReturn result = GDK_FILTER_CONTINUE; ClutterInputDevice *device, *source_device; GdkDevice *gdk_device; backend = clutter_get_default_backend (); if (!CLUTTER_IS_BACKEND_GDK (backend)) return GDK_FILTER_CONTINUE; if (gdk_event->any.window == NULL) return GDK_FILTER_CONTINUE; device_manager = clutter_device_manager_get_default (); if (G_UNLIKELY (device_manager == NULL)) return GDK_FILTER_CONTINUE; backend_gdk = CLUTTER_BACKEND_GDK (backend); stage = clutter_gdk_get_stage_from_window (gdk_event->any.window); gdk_device = gdk_event_get_device (gdk_event); if (gdk_device != NULL) device = _clutter_device_manager_gdk_lookup_device (device_manager, gdk_device); else device = NULL; gdk_device = gdk_event_get_source_device (gdk_event); if (gdk_device != NULL) source_device = _clutter_device_manager_gdk_lookup_device (device_manager, gdk_device); else source_device = NULL; if (stage == NULL) return GDK_FILTER_CONTINUE; _clutter_threads_acquire_lock (); switch (gdk_event->type) { case GDK_DELETE: event = clutter_event_new (CLUTTER_DELETE); break; case GDK_DESTROY: event = clutter_event_new (CLUTTER_DESTROY_NOTIFY); break; case GDK_EXPOSE: { ClutterPaintVolume clip; ClutterVertex origin; CLUTTER_NOTE (EVENT, "Expose for stage '%s' [%p] { %d, %d - %d x %d }", _clutter_actor_get_debug_name (CLUTTER_ACTOR (stage)), stage, gdk_event->expose.area.x, gdk_event->expose.area.y, gdk_event->expose.area.width, gdk_event->expose.area.height); origin.x = gdk_event->expose.area.x; origin.y = gdk_event->expose.area.y; origin.z = 0; _clutter_paint_volume_init_static (&clip, CLUTTER_ACTOR (stage)); clutter_paint_volume_set_origin (&clip, &origin); clutter_paint_volume_set_width (&clip, gdk_event->expose.area.width); clutter_paint_volume_set_height (&clip, gdk_event->expose.area.height); _clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stage), 0, &clip); clutter_paint_volume_free (&clip); } break; case GDK_DAMAGE: /* This is handled by cogl */ break; case GDK_MOTION_NOTIFY: event = clutter_event_new (CLUTTER_MOTION); event->motion.time = gdk_event->motion.time; event->motion.x = gdk_event->motion.x; event->motion.y = gdk_event->motion.y; event->motion.axes = NULL; /* It's all X in the end, right? */ event->motion.modifier_state = gdk_event->motion.state; clutter_event_set_device (event, device); clutter_event_set_source_device (event, source_device); CLUTTER_NOTE (EVENT, "Motion notifiy [%.2f, %.2f]", event->motion.x, event->motion.y); break; case GDK_BUTTON_PRESS: case GDK_BUTTON_RELEASE: event = clutter_event_new (gdk_event->type == GDK_BUTTON_PRESS ? CLUTTER_BUTTON_PRESS : CLUTTER_BUTTON_RELEASE); event->button.time = gdk_event->button.time; event->button.x = gdk_event->button.x; event->button.y = gdk_event->button.y; event->button.axes = NULL; event->button.modifier_state = gdk_event->button.state; event->button.button = gdk_event->button.button; event->button.click_count = 1; clutter_event_set_device (event, device); clutter_event_set_source_device (event, source_device); CLUTTER_NOTE (EVENT, "Button %d %s [%.2f, %.2f]", event->button.button, event->type == CLUTTER_BUTTON_PRESS ? "press" : "release", event->button.x, event->button.y); break; case GDK_2BUTTON_PRESS: case GDK_3BUTTON_PRESS: /* these are handled by clutter-main.c updating click_count */ break; case GDK_KEY_PRESS: case GDK_KEY_RELEASE: event = clutter_event_new (gdk_event->type == GDK_KEY_PRESS ? CLUTTER_KEY_PRESS : CLUTTER_KEY_RELEASE); event->key.time = gdk_event->key.time; event->key.modifier_state = gdk_event->key.state; event->key.keyval = gdk_event->key.keyval; event->key.hardware_keycode = gdk_event->key.hardware_keycode; event->key.unicode_value = g_utf8_get_char (gdk_event->key.string); clutter_event_set_device (event, device); clutter_event_set_source_device (event, source_device); CLUTTER_NOTE (EVENT, "Key %d %s", event->key.keyval, event->type == CLUTTER_KEY_PRESS ? "press" : "release"); break; case GDK_ENTER_NOTIFY: case GDK_LEAVE_NOTIFY: event = clutter_event_new (gdk_event->type == GDK_ENTER_NOTIFY ? CLUTTER_ENTER : CLUTTER_LEAVE); event->crossing.source = CLUTTER_ACTOR (stage); event->crossing.time = gdk_event_get_time (gdk_event); event->crossing.x = gdk_event->crossing.x; event->crossing.y = gdk_event->crossing.y; /* XXX: no better fallback here? */ clutter_event_set_device (event, device); clutter_event_set_source_device (event, source_device); if (gdk_event->type == GDK_ENTER_NOTIFY) _clutter_input_device_set_stage (clutter_event_get_device (event), stage); else _clutter_input_device_set_stage (clutter_event_get_device (event), NULL); CLUTTER_NOTE (EVENT, "Crossing %s [%.2f, %.2f]", event->type == CLUTTER_ENTER ? "enter" : "leave", event->crossing.x, event->crossing.y); break; case GDK_FOCUS_CHANGE: if (gdk_event->focus_change.in) _clutter_stage_update_state (stage, 0, CLUTTER_STAGE_STATE_ACTIVATED); else _clutter_stage_update_state (stage, CLUTTER_STAGE_STATE_ACTIVATED, 0); break; case GDK_CONFIGURE: { gfloat w, h; clutter_actor_get_size (CLUTTER_ACTOR (stage), &w, &h); if (w != gdk_event->configure.width || h != gdk_event->configure.height) { clutter_actor_set_size (CLUTTER_ACTOR (stage), gdk_event->configure.width, gdk_event->configure.height); } } break; case GDK_SCROLL: event = clutter_event_new (CLUTTER_SCROLL); event->scroll.time = gdk_event->scroll.time; event->scroll.x = gdk_event->scroll.x; event->scroll.y = gdk_event->scroll.y; event->scroll.modifier_state = gdk_event->scroll.state; event->scroll.axes = NULL; /* XXX: must keep ClutterScrollDirection compatible with GdkScrollDirection */ event->scroll.direction = (ClutterScrollDirection) gdk_event->scroll.direction; clutter_event_set_device (event, device); clutter_event_set_source_device (event, source_device); clutter_event_set_scroll_delta (event, gdk_event->scroll.delta_x, gdk_event->scroll.delta_y); break; case GDK_WINDOW_STATE: if (gdk_event->window_state.changed_mask & GDK_WINDOW_STATE_FULLSCREEN) { gboolean is_fullscreen; is_fullscreen = (gdk_event->window_state.new_window_state & GDK_WINDOW_STATE_FULLSCREEN) != 0; if (is_fullscreen) _clutter_stage_update_state (stage, 0, CLUTTER_STAGE_STATE_FULLSCREEN); else _clutter_stage_update_state (stage, CLUTTER_STAGE_STATE_FULLSCREEN, 0); } break; case GDK_SETTING: _clutter_backend_gdk_update_setting (backend_gdk, gdk_event->setting.name); break; default: break; } if (event != NULL) { event->any.stage = stage; if (gdk_event->any.send_event) event->any.flags = CLUTTER_EVENT_FLAG_SYNTHETIC; _clutter_event_push (event, FALSE); spin = 1; CLUTTER_NOTE (EVENT, "Translated one event from Gdk"); /* handle also synthetic enter/leave events */ if (event->type == CLUTTER_MOTION) spin += 2; while (spin > 0 && (event = clutter_event_get ())) { /* forward the event into clutter for emission etc. */ _clutter_stage_queue_event (event->any.stage, event, FALSE); --spin; } result = GDK_FILTER_REMOVE; } _clutter_threads_release_lock (); return result; }