mirror of
https://github.com/brl/mutter.git
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c6fba47a52
The clutter_context_get_default() function is private, but shared across Clutter. For this reason, it should be prefixed by '_' so that the symbol is hidden from the shared object.
378 lines
10 KiB
C
378 lines
10 KiB
C
/* Clutter.
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* An OpenGL based 'interactive canvas' library.
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* Authored By Matthew Allum <mallum@openedhand.com>
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* Copyright (C) 2006-2007 OpenedHand
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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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "clutter-stage-sdl.h"
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#include "clutter-backend-sdl.h"
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#include "clutter-sdl.h"
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#include "../clutter-backend.h"
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#include "../clutter-event.h"
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#include "../clutter-private.h"
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#include "../clutter-debug.h"
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#include "../clutter-main.h"
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#include "../clutter-keysyms.h"
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#include <string.h>
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#include <glib.h>
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typedef struct _ClutterEventSource ClutterEventSource;
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struct _ClutterEventSource
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{
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GSource source;
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ClutterBackend *backend;
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};
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static gboolean clutter_event_prepare (GSource *source,
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gint *timeout);
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static gboolean clutter_event_check (GSource *source);
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static gboolean clutter_event_dispatch (GSource *source,
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GSourceFunc callback,
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gpointer user_data);
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static GList *event_sources = NULL;
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static GSourceFuncs event_funcs = {
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clutter_event_prepare,
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clutter_event_check,
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clutter_event_dispatch,
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NULL
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};
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static guint32
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get_backend_time (void)
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{
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ClutterBackendSDL *backend_sdl;
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gdouble elapsed;
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backend_sdl = CLUTTER_BACKEND_SDL (clutter_get_default_backend ());
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elapsed = g_timer_elapsed (backend_sdl->timer, NULL);
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return (elapsed * 1000.0);
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}
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static GSource *
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clutter_event_source_new (ClutterBackend *backend)
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{
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GSource *source = g_source_new (&event_funcs, sizeof (ClutterEventSource));
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ClutterEventSource *event_source = (ClutterEventSource *) source;
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event_source->backend = backend;
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return source;
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}
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void
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_clutter_events_init (ClutterBackend *backend)
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{
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GSource *source;
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ClutterEventSource *event_source;
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ClutterBackendSDL *backend_sdl = CLUTTER_BACKEND_SDL (backend);
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CLUTTER_NOTE (EVENT, "Starting timer");
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g_assert (backend_sdl->timer != NULL);
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g_timer_start (backend_sdl->timer);
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CLUTTER_NOTE (EVENT, "Creating event source");
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source = backend_sdl->event_source = clutter_event_source_new (backend);
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event_source = (ClutterEventSource *) source;
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g_source_set_priority (source, CLUTTER_PRIORITY_EVENTS);
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event_sources = g_list_prepend (event_sources, event_source);
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g_source_set_can_recurse (source, TRUE);
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g_source_attach (source, NULL);
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}
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void
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_clutter_events_uninit (ClutterBackend *backend)
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{
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ClutterBackendSDL *backend_sdl = CLUTTER_BACKEND_SDL (backend);
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if (backend_sdl->event_source)
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{
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CLUTTER_NOTE (EVENT, "Stopping the timer");
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g_timer_stop (backend_sdl->timer);
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CLUTTER_NOTE (EVENT, "Destroying the event source");
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event_sources = g_list_remove (event_sources,
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backend_sdl->event_source);
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g_source_destroy (backend_sdl->event_source);
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g_source_unref (backend_sdl->event_source);
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backend_sdl->event_source = NULL;
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}
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}
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static gboolean
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clutter_event_prepare (GSource *source,
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gint *timeout)
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{
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SDL_Event events;
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int num_events;
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gboolean retval;
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clutter_threads_enter ();
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num_events = SDL_PeepEvents(&events, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
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if (num_events == 1)
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{
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clutter_threads_leave ();
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*timeout = 0;
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return TRUE;
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}
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if (num_events == -1)
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g_warning("Error polling SDL: %s", SDL_GetError());
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*timeout = 50;
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retval = clutter_events_pending ();
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clutter_threads_leave ();
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return retval;
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}
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static gboolean
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clutter_event_check (GSource *source)
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{
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SDL_Event events;
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int num_events;
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gboolean retval;
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clutter_threads_enter ();
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/* Pump SDL */
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SDL_PumpEvents();
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num_events = SDL_PeepEvents(&events, 1, SDL_PEEKEVENT, SDL_ALLEVENTS);
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if (num_events == -1)
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g_warning("Error polling SDL: %s", SDL_GetError());
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retval = (num_events == 1 || clutter_events_pending ());
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clutter_threads_leave ();
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return retval;
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}
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static void
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key_event_translate (ClutterEvent *event,
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SDL_Event *sdl_event)
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{
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event->key.time = get_backend_time ();
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/* FIXME: This is just a quick hack to make SDL keys roughly work.
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* Fixing it properly is left as a exercise to someone who enjoys
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* battleing the SDL API.
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*
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* We probably need to use sdl_event->key.keysym.unicode to do lookups
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* and I have no idea how to get shifted keysyms. It looks quite easy
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* if you drop into xlib but that then avoids the whole point of using
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* SDL in the first place (More portability than just GLX)
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*/
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switch (sdl_event->key.keysym.sym)
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{
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case SDLK_UP: event->key.keyval = CLUTTER_Up; break;
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case SDLK_DOWN: event->key.keyval = CLUTTER_Down; break;
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case SDLK_LEFT: event->key.keyval = CLUTTER_Left; break;
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case SDLK_RIGHT: event->key.keyval = CLUTTER_Right; break;
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case SDLK_HOME: event->key.keyval = CLUTTER_Home; break;
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case SDLK_END: event->key.keyval = CLUTTER_End; break;
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case SDLK_PAGEUP: event->key.keyval = CLUTTER_Page_Up; break;
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case SDLK_PAGEDOWN: event->key.keyval = CLUTTER_Page_Down; break;
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case SDLK_BACKSPACE: event->key.keyval = CLUTTER_BackSpace; break;
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case SDLK_DELETE: event->key.keyval = CLUTTER_Delete; break;
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default:
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event->key.keyval = sdl_event->key.keysym.sym;
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}
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event->key.hardware_keycode = sdl_event->key.keysym.scancode;
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if (sdl_event->key.keysym.mod & KMOD_CTRL)
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event->key.modifier_state
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= event->key.modifier_state & CLUTTER_CONTROL_MASK;
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if (sdl_event->key.keysym.mod & KMOD_SHIFT)
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event->key.modifier_state
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= event->key.modifier_state & CLUTTER_SHIFT_MASK;
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}
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static gboolean
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event_translate (ClutterBackend *backend,
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ClutterEvent *event,
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SDL_Event *sdl_event)
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{
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ClutterBackendSDL *backend_sdl;
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gboolean res;
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backend_sdl = CLUTTER_BACKEND_SDL (clutter_get_default_backend ());
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res = TRUE;
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switch (sdl_event->type)
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{
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case SDL_KEYDOWN:
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event->type = CLUTTER_KEY_PRESS;
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key_event_translate (event, sdl_event);
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break;
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case SDL_KEYUP:
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event->type = CLUTTER_KEY_RELEASE;
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key_event_translate (event, sdl_event);
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break;
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case SDL_MOUSEBUTTONDOWN:
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switch (sdl_event->button.button)
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{
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case 4: /* up */
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case 5: /* down */
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case 6: /* left */
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case 7: /* right */
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event->scroll.type = event->type = CLUTTER_SCROLL;
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if (sdl_event->button.button == 4)
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event->scroll.direction = CLUTTER_SCROLL_UP;
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else if (sdl_event->button.button == 5)
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event->scroll.direction = CLUTTER_SCROLL_DOWN;
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else if (sdl_event->button.button == 6)
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event->scroll.direction = CLUTTER_SCROLL_LEFT;
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else
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event->scroll.direction = CLUTTER_SCROLL_RIGHT;
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event->scroll.time = get_backend_time ();
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event->scroll.x = sdl_event->button.x;
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event->scroll.y = sdl_event->button.y;
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event->scroll.modifier_state = sdl_event->button.state;
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break;
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default:
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event->button.type = event->type = CLUTTER_BUTTON_PRESS;
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event->button.time = get_backend_time ();
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event->button.x = sdl_event->button.x;
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event->button.y = sdl_event->button.y;
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event->button.modifier_state = sdl_event->button.state;
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event->button.button = sdl_event->button.button;
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break;
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}
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break;
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case SDL_MOUSEBUTTONUP:
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/* scroll events don't have a corresponding release */
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if (sdl_event->button.button == 4 ||
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sdl_event->button.button == 5 ||
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sdl_event->button.button == 6 ||
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sdl_event->button.button == 7)
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{
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res = FALSE;
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break;
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}
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event->button.type = event->type = CLUTTER_BUTTON_RELEASE;
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event->button.time = get_backend_time ();
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event->button.x = sdl_event->button.x;
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event->button.y = sdl_event->button.y;
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event->button.modifier_state = sdl_event->button.state;
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event->button.button = sdl_event->button.button;
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break;
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case SDL_MOUSEMOTION:
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event->motion.type = event->type = CLUTTER_MOTION;
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event->motion.time = get_backend_time ();
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event->motion.x = sdl_event->motion.x;
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event->motion.y = sdl_event->motion.y;
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event->motion.modifier_state = sdl_event->motion.state;
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break;
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default:
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res = FALSE;
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break;
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}
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return res;
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}
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static gboolean
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clutter_event_dispatch (GSource *source,
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GSourceFunc callback,
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gpointer user_data)
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{
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SDL_Event sdl_event;
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ClutterEvent *event = NULL;
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ClutterBackend *backend = ((ClutterEventSource *) source)->backend;
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ClutterMainContext *clutter_context;
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clutter_threads_enter ();
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clutter_context = _clutter_context_get_default ();
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while (SDL_PollEvent(&sdl_event))
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{
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/* FIXME: essentially translate events and push them onto the queue
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* below will then pop them out via _clutter_events_queue.
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*/
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if (sdl_event.type == SDL_QUIT)
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{
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SDL_Quit();
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exit(0);
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}
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else
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{
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event = clutter_event_new (CLUTTER_NOTHING);
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event->any.stage = CLUTTER_STAGE (clutter_stage_get_default ());
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if (event_translate (backend, event, &sdl_event))
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{
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/* push directly here to avoid copy of queue_put */
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g_queue_push_head (clutter_context->events_queue, event);
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}
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else
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clutter_event_free (event);
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}
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}
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event = clutter_event_get ();
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if (event)
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{
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clutter_do_event(event);
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clutter_event_free (event);
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}
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clutter_threads_leave ();
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return TRUE;
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}
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