mirror of
https://github.com/brl/mutter.git
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70c43c5a11
The threads_enter() and threads_leave() functions are no-ops because Clutter is not thread-aware nor thread-safe. Leaving them in is a source of confusion so we just remove them. Update the NEWS and the README files with the release notes.
740 lines
19 KiB
C
740 lines
19 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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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 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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/**
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* SECTION:clutter-main
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* @short_description: Various 'global' clutter functions.
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*
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* Functions to retrieve various global Clutter resources and other utility
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* functions for mainloops, events and threads
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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 <stdlib.h>
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#include "clutter-event.h"
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#include "clutter-backend.h"
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#include "clutter-main.h"
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#include "clutter-feature.h"
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#include "clutter-actor.h"
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#include "clutter-stage.h"
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#include "clutter-private.h"
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#include "clutter-debug.h"
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#include "clutter-version.h" /* For flavour define */
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#include "cogl.h"
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static ClutterMainContext *ClutterCntx = NULL;
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static gboolean clutter_is_initialized = FALSE;
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static gboolean clutter_show_fps = FALSE;
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static gboolean clutter_fatal_warnings = FALSE;
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guint clutter_debug_flags = 0; /* global clutter debug flag */
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#ifdef CLUTTER_ENABLE_DEBUG
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static const GDebugKey clutter_debug_keys[] = {
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{ "misc", CLUTTER_DEBUG_MISC },
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{ "actor", CLUTTER_DEBUG_ACTOR },
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{ "texture", CLUTTER_DEBUG_TEXTURE },
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{ "event", CLUTTER_DEBUG_EVENT },
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{ "paint", CLUTTER_DEBUG_PAINT },
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{ "gl", CLUTTER_DEBUG_GL },
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{ "alpha", CLUTTER_DEBUG_ALPHA },
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{ "behaviour", CLUTTER_DEBUG_BEHAVIOUR },
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{ "pango", CLUTTER_DEBUG_PANGO },
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{ "backend", CLUTTER_DEBUG_BACKEND },
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{ "scheduler", CLUTTER_DEBUG_SCHEDULER },
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};
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#endif /* CLUTTER_ENABLE_DEBUG */
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/**
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* clutter_get_show_fps:
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*
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* FIXME
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*
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* Return value: FIXME
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*
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* Since: 0.4
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*/
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gboolean
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clutter_get_show_fps (void)
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{
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return clutter_show_fps;
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}
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/**
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* clutter_redraw:
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*
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* FIXME
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*/
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void
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clutter_redraw (void)
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{
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ClutterMainContext *ctx;
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ClutterActor *stage;
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static GTimer *timer = NULL;
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static guint timer_n_frames = 0;
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ctx = clutter_context_get_default ();
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stage = _clutter_backend_get_stage (ctx->backend);
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CLUTTER_TIMESTAMP (SCHEDULER, "Redraw start");
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CLUTTER_NOTE (PAINT, " Redraw enter");
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/* Setup FPS count */
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if (clutter_get_show_fps ())
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{
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if (!timer)
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timer = g_timer_new ();
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}
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/* The below cant go in stage paint as base actor_paint will get
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* called before the below (and break picking etc)
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*/
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if (CLUTTER_PRIVATE_FLAGS (stage) & CLUTTER_ACTOR_SYNC_MATRICES)
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{
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ClutterPerspective perspective;
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clutter_stage_get_perspectivex (CLUTTER_STAGE (stage), &perspective);
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cogl_setup_viewport (clutter_actor_get_width (stage),
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clutter_actor_get_height (stage),
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perspective.fovy,
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perspective.aspect,
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perspective.z_near,
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perspective.z_far);
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CLUTTER_UNSET_PRIVATE_FLAGS (stage, CLUTTER_ACTOR_SYNC_MATRICES);
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}
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/* Call through ti the actual backend to do the painting down from
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* the stage. It will likely need to swap buffers, vblank sync etc
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* which will be windowing system dependant.
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*/
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_clutter_backend_redraw (ctx->backend);
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/* Complete FPS info */
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if (clutter_get_show_fps ())
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{
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timer_n_frames++;
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if (g_timer_elapsed (timer, NULL) >= 1.0)
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{
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g_print ("*** FPS: %i ***\n", timer_n_frames);
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timer_n_frames = 0;
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g_timer_start (timer);
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}
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}
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CLUTTER_NOTE (PAINT, " Redraw leave");
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CLUTTER_TIMESTAMP (SCHEDULER, "Redraw finish");
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}
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/**
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* clutter_do_event
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*
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* This function should never be called by applications.
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*/
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void
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clutter_do_event (ClutterEvent *event)
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{
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ClutterMainContext *context;
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ClutterBackend *backend;
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ClutterActor *stage;
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context = clutter_context_get_default ();
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backend = context->backend;
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stage = _clutter_backend_get_stage (backend);
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if (!stage)
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return;
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CLUTTER_TIMESTAMP (SCHEDULER, "Event recieved");
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switch (event->type)
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{
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case CLUTTER_NOTHING:
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break;
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case CLUTTER_DESTROY_NOTIFY:
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case CLUTTER_DELETE:
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if (clutter_stage_event (CLUTTER_STAGE (stage), event))
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clutter_main_quit ();
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break;
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case CLUTTER_KEY_PRESS:
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case CLUTTER_KEY_RELEASE:
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case CLUTTER_MOTION:
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case CLUTTER_BUTTON_PRESS:
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case CLUTTER_2BUTTON_PRESS:
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case CLUTTER_3BUTTON_PRESS:
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case CLUTTER_BUTTON_RELEASE:
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case CLUTTER_SCROLL:
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clutter_stage_event (CLUTTER_STAGE (stage), event);
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break;
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case CLUTTER_STAGE_STATE:
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case CLUTTER_CLIENT_MESSAGE:
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break;
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}
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}
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/**
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* clutter_main_quit:
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*
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* Terminates the Clutter mainloop.
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*/
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void
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clutter_main_quit (void)
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{
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ClutterMainContext *context = CLUTTER_CONTEXT ();
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g_return_if_fail (context->main_loops != NULL);
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if (g_main_loop_is_running (context->main_loops->data))
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g_main_loop_quit (context->main_loops->data);
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}
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/**
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* clutter_main_level:
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*
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* Retrieves the depth of the Clutter mainloop.
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*
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* Return value: The level of the mainloop.
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*/
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gint
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clutter_main_level (void)
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{
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ClutterMainContext *context = CLUTTER_CONTEXT ();
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return context->main_loop_level;
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}
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/**
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* clutter_main:
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*
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* Starts the Clutter mainloop.
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*/
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void
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clutter_main (void)
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{
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ClutterMainContext *context = CLUTTER_CONTEXT ();
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GMainLoop *loop;
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if (!clutter_is_initialized)
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{
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g_warning ("Called clutter_main() but Clutter wasn't initialised. "
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"You must call clutter_init() first.");
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return;
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}
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CLUTTER_MARK ();
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context->main_loop_level++;
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loop = g_main_loop_new (NULL, TRUE);
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context->main_loops = g_slist_prepend (context->main_loops, loop);
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if (g_main_loop_is_running (context->main_loops->data))
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{
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/* FIXME - add thread locking around this call */
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g_main_loop_run (loop);
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}
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context->main_loops = g_slist_remove (context->main_loops, loop);
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g_main_loop_unref (loop);
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context->main_loop_level--;
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if (context->main_loop_level == 0)
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{
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/* this will take care of destroying the stage */
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g_object_unref (context->backend);
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context->backend = NULL;
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g_free (context);
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}
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CLUTTER_MARK ();
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}
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/**
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* clutter_get_debug_enabled:
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*
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* Check if clutter has debugging turned on.
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*
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* Return value: TRUE if debugging is turned on, FALSE otherwise.
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*/
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gboolean
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clutter_get_debug_enabled (void)
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{
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#ifdef CLUTTER_ENABLE_DEBUG
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return clutter_debug_flags != 0;
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#else
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return FALSE;
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#endif
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}
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ClutterMainContext*
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clutter_context_get_default (void)
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{
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if (G_UNLIKELY(!ClutterCntx))
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{
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ClutterMainContext *ctx;
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ctx = g_new0 (ClutterMainContext, 1);
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ctx->backend = g_object_new (_clutter_backend_impl_get_type (), NULL);
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ctx->is_initialized = FALSE;
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#ifdef CLUTTER_ENABLE_DEBUG
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ctx->timer = g_timer_new ();
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g_timer_start (ctx->timer);
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#endif
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ClutterCntx = ctx;
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}
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return ClutterCntx;
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}
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/**
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* clutter_get_timestamp:
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*
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* Returns the approximate number of microseconds passed since clutter was
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* intialised.
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*
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* Return value: Number of microseconds since clutter_init() was called.
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*/
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gulong
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clutter_get_timestamp (void)
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{
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#ifdef CLUTTER_ENABLE_DEBUG
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ClutterMainContext *ctx;
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gdouble seconds;
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ctx = clutter_context_get_default ();
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/* FIXME: may need a custom timer for embedded setups */
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seconds = g_timer_elapsed (ctx->timer, NULL);
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return (gulong)(seconds / 0.0000001);
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#else
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return 0;
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#endif
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}
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#ifdef CLUTTER_ENABLE_DEBUG
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static gboolean
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clutter_arg_debug_cb (const char *key,
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const char *value,
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gpointer user_data)
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{
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clutter_debug_flags |=
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g_parse_debug_string (value,
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clutter_debug_keys,
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G_N_ELEMENTS (clutter_debug_keys));
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return TRUE;
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}
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static gboolean
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clutter_arg_no_debug_cb (const char *key,
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const char *value,
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gpointer user_data)
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{
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clutter_debug_flags &=
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~g_parse_debug_string (value,
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clutter_debug_keys,
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G_N_ELEMENTS (clutter_debug_keys));
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return TRUE;
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}
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#endif /* CLUTTER_ENABLE_DEBUG */
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static GOptionEntry clutter_args[] = {
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{ "clutter-show-fps", 0, 0, G_OPTION_ARG_NONE, &clutter_show_fps,
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"Show frames per second", NULL },
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{ "g-fatal-warnings", 0, 0, G_OPTION_ARG_NONE, &clutter_fatal_warnings,
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"Make all warnings fatal", NULL },
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#ifdef CLUTTER_ENABLE_DEBUG
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{ "clutter-debug", 0, 0, G_OPTION_ARG_CALLBACK, clutter_arg_debug_cb,
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"Clutter debugging flags to set", "FLAGS" },
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{ "clutter-no-debug", 0, 0, G_OPTION_ARG_CALLBACK, clutter_arg_no_debug_cb,
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"Clutter debugging flags to unset", "FLAGS" },
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#endif /* CLUTTER_ENABLE_DEBUG */
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{ NULL, },
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};
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/* pre_parse_hook: initialise variables depending on environment
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* variables; these variables might be overridden by the command
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* line arguments that are going to be parsed after.
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*/
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static gboolean
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pre_parse_hook (GOptionContext *context,
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GOptionGroup *group,
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gpointer data,
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GError **error)
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{
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ClutterMainContext *clutter_context;
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ClutterBackend *backend;
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const char *env_string;
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if (clutter_is_initialized)
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return TRUE;
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clutter_context = clutter_context_get_default ();
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clutter_context->main_loops = NULL;
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clutter_context->main_loop_level = 0;
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clutter_context->font_map = PANGO_FT2_FONT_MAP (pango_ft2_font_map_new ());
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pango_ft2_font_map_set_resolution (clutter_context->font_map, 96.0, 96.0);
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backend = clutter_context->backend;
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g_assert (CLUTTER_IS_BACKEND (backend));
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#ifdef CLUTTER_ENABLE_DEBUG
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env_string = g_getenv ("CLUTTER_DEBUG");
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if (env_string != NULL)
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{
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clutter_debug_flags =
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g_parse_debug_string (env_string,
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clutter_debug_keys,
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G_N_ELEMENTS (clutter_debug_keys));
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env_string = NULL;
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}
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#endif /* CLUTTER_ENABLE_DEBUG */
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env_string = g_getenv ("CLUTTER_SHOW_FPS");
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if (env_string)
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clutter_show_fps = TRUE;
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if (CLUTTER_BACKEND_GET_CLASS (backend)->pre_parse)
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return CLUTTER_BACKEND_GET_CLASS (backend)->pre_parse (backend, error);
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return TRUE;
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}
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/* post_parse_hook: initialise the context and data structures
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* and opens the X display
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*/
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static gboolean
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post_parse_hook (GOptionContext *context,
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GOptionGroup *group,
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gpointer data,
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GError **error)
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{
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ClutterMainContext *clutter_context;
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ClutterBackend *backend;
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gboolean retval = FALSE;
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if (clutter_is_initialized)
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return TRUE;
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clutter_context = clutter_context_get_default ();
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backend = clutter_context->backend;
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g_assert (CLUTTER_IS_BACKEND (backend));
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if (clutter_fatal_warnings)
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{
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GLogLevelFlags fatal_mask;
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fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
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fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
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g_log_set_always_fatal (fatal_mask);
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}
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if (CLUTTER_BACKEND_GET_CLASS (backend)->post_parse)
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retval = CLUTTER_BACKEND_GET_CLASS (backend)->post_parse (backend, error);
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else
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retval = TRUE;
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clutter_is_initialized = retval;
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return retval;
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}
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/**
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* clutter_get_option_group:
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*
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* Returns a #GOptionGroup for the command line arguments recognized
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* by Clutter. You should add this group to your #GOptionContext with
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* g_option_context_add_group(), if you are using g_option_context_parse()
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* to parse your commandline arguments.
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*
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* Return value: a GOptionGroup for the commandline arguments
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* recognized by Clutter
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*
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* Since: 0.2
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*/
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GOptionGroup *
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clutter_get_option_group (void)
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{
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ClutterMainContext *context;
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GOptionGroup *group;
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context = clutter_context_get_default ();
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group = g_option_group_new ("clutter",
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"Clutter Options",
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"Show Clutter Options",
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NULL,
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NULL);
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g_option_group_set_parse_hooks (group, pre_parse_hook, post_parse_hook);
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g_option_group_add_entries (group, clutter_args);
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/* add backend-specific options */
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_clutter_backend_add_options (context->backend, group);
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return group;
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}
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GQuark
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clutter_init_error_quark (void)
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{
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return g_quark_from_static_string ("clutter-init-error-quark");
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}
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/**
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* clutter_init_with_args:
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* @argc: a pointer to the number of command line arguments
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* @argv: a pointer to the array of comman line arguments
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* @parameter_string: a string which is displayed in the
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* first line of <option>--help</option> output, after
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* <literal><replaceable>programname</replaceable> [OPTION...]</literal>
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* @entries: a %NULL terminated array of #GOptionEntry<!-- -->s
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* describing the options of your program
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* @translation_domain: a translation domain to use for translating
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* the <option>--help</option> output for the options in @entries
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* with gettext(), or %NULL
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* @error: a return location for a #GError
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*
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* This function does the same work as clutter_init(). Additionally,
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* it allows you to add your own command line options, and it
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* automatically generates nicely formatted <option>--help</option>
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* output. Note that your program will be terminated after writing
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* out the help output. Also note that, in case of error, the
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* error message will be placed inside @error instead of being
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* printed on the display.
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*
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* Return value: %CLUTTER_INIT_SUCCESS if Clutter has been successfully
|
|
* initialised, or other values or #ClutterInitError in case of
|
|
* error.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
ClutterInitError
|
|
clutter_init_with_args (int *argc,
|
|
char ***argv,
|
|
char *parameter_string,
|
|
GOptionEntry *entries,
|
|
char *translation_domain,
|
|
GError **error)
|
|
{
|
|
ClutterMainContext *clutter_context;
|
|
GOptionContext *context;
|
|
GOptionGroup *group;
|
|
gboolean res;
|
|
GError *stage_error;
|
|
|
|
if (clutter_is_initialized)
|
|
return CLUTTER_INIT_SUCCESS;
|
|
|
|
if (argc && *argc > 0 && *argv)
|
|
g_set_prgname ((*argv)[0]);
|
|
|
|
clutter_base_init ();
|
|
|
|
group = clutter_get_option_group ();
|
|
context = g_option_context_new (parameter_string);
|
|
|
|
g_option_context_add_group (context, group);
|
|
|
|
if (entries)
|
|
g_option_context_add_main_entries (context, entries, translation_domain);
|
|
|
|
res = g_option_context_parse (context, argc, argv, error);
|
|
g_option_context_free (context);
|
|
|
|
/* if res is FALSE, the error is filled for
|
|
* us by g_option_context_parse()
|
|
*/
|
|
if (!res)
|
|
return CLUTTER_INIT_ERROR_INTERNAL;
|
|
|
|
clutter_context = clutter_context_get_default ();
|
|
|
|
stage_error = NULL;
|
|
if (!_clutter_backend_init_stage (clutter_context->backend, &stage_error))
|
|
{
|
|
g_propagate_error (error, stage_error);
|
|
return CLUTTER_INIT_ERROR_INTERNAL;
|
|
}
|
|
|
|
_clutter_backend_init_events (clutter_context->backend);
|
|
|
|
_clutter_feature_init ();
|
|
|
|
clutter_stage_set_title (CLUTTER_STAGE(clutter_stage_get_default()),
|
|
g_get_prgname ());
|
|
|
|
return CLUTTER_INIT_SUCCESS;
|
|
}
|
|
|
|
static gboolean
|
|
clutter_parse_args (int *argc,
|
|
char ***argv)
|
|
{
|
|
GOptionContext *option_context;
|
|
GOptionGroup *clutter_group;
|
|
GError *error = NULL;
|
|
gboolean ret = TRUE;
|
|
|
|
if (clutter_is_initialized)
|
|
return TRUE;
|
|
|
|
option_context = g_option_context_new (NULL);
|
|
g_option_context_set_ignore_unknown_options (option_context, TRUE);
|
|
g_option_context_set_help_enabled (option_context, FALSE);
|
|
|
|
/* Initiate any command line options from the backend */
|
|
|
|
clutter_group = clutter_get_option_group ();
|
|
g_option_context_set_main_group (option_context, clutter_group);
|
|
|
|
if (!g_option_context_parse (option_context, argc, argv, &error))
|
|
{
|
|
g_warning ("%s", error->message);
|
|
g_error_free (error);
|
|
ret = FALSE;
|
|
}
|
|
|
|
g_option_context_free (option_context);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* clutter_init:
|
|
* @argc: The number of arguments in @argv
|
|
* @argv: A pointer to an array of arguments.
|
|
*
|
|
* It will initialise everything needed to operate with Clutter and
|
|
* parses some standard command line options. @argc and @argv are
|
|
* adjusted accordingly so your own code will never see those standard
|
|
* arguments.
|
|
*
|
|
* Return value: 1 on success, < 0 on failure.
|
|
*/
|
|
ClutterInitError
|
|
clutter_init (int *argc,
|
|
char ***argv)
|
|
{
|
|
ClutterMainContext *context;
|
|
GError *stage_error;
|
|
|
|
if (clutter_is_initialized)
|
|
return CLUTTER_INIT_SUCCESS;
|
|
|
|
if (argc && *argc > 0 && *argv)
|
|
g_set_prgname ((*argv)[0]);
|
|
|
|
clutter_base_init ();
|
|
|
|
/* parse_args will trigger backend creation and things like
|
|
* DISPLAY connection etc.
|
|
*/
|
|
if (clutter_parse_args (argc, argv) == FALSE)
|
|
{
|
|
CLUTTER_NOTE (MISC, "failed to parse arguments.");
|
|
return CLUTTER_INIT_ERROR_INTERNAL;
|
|
}
|
|
|
|
/* Note, creates backend if not already existing (though parse args will
|
|
* have likely created it)
|
|
*/
|
|
context = clutter_context_get_default ();
|
|
|
|
/* Stage will give us a GL Context etc */
|
|
stage_error = NULL;
|
|
if (!_clutter_backend_init_stage (context->backend, &stage_error))
|
|
{
|
|
CLUTTER_NOTE (MISC, "stage failed to initialise.");
|
|
g_critical (stage_error->message);
|
|
g_error_free (stage_error);
|
|
return CLUTTER_INIT_ERROR_INTERNAL;
|
|
}
|
|
|
|
/* Initiate event collection */
|
|
_clutter_backend_init_events (context->backend);
|
|
|
|
/* finally features - will call to backend and cogl */
|
|
_clutter_feature_init ();
|
|
|
|
clutter_stage_set_title (CLUTTER_STAGE(clutter_stage_get_default()),
|
|
g_get_prgname());
|
|
|
|
return CLUTTER_INIT_SUCCESS;
|
|
}
|
|
|
|
gboolean
|
|
_clutter_boolean_accumulator (GSignalInvocationHint *ihint,
|
|
GValue *return_accu,
|
|
const GValue *handler_return,
|
|
gpointer dummy)
|
|
{
|
|
gboolean continue_emission;
|
|
gboolean signal_handled;
|
|
|
|
signal_handled = g_value_get_boolean (handler_return);
|
|
g_value_set_boolean (return_accu, signal_handled);
|
|
continue_emission = !signal_handled;
|
|
|
|
return continue_emission;
|
|
}
|
|
|
|
void
|
|
clutter_base_init (void)
|
|
{
|
|
static gboolean initialised = FALSE;
|
|
|
|
if (!initialised)
|
|
{
|
|
GType foo; /* Quiet gcc */
|
|
|
|
initialised = TRUE;
|
|
|
|
/* initialise GLib type system */
|
|
g_type_init ();
|
|
foo = clutter_actor_get_type ();
|
|
}
|
|
}
|