mirror of
https://github.com/brl/mutter.git
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9c572ff45a
* clutter/clutter-main.c: * clutter/clutter-private.h: * clutter/clutter-stage.c: Rework and fix offscreen rendering, also rejig GLX context handling, moving mostly into stage. Require at least OpenGL 1.2 ( CLAMP_TO_EDGE ) * clutter/clutter-texture.c: Explicity set props on _init() as to avoid nasty can_create bug failing miserably in certain situations. Switch to CLAMP_TO_EDGE for textures to avoid tile seams. Add some more GL error checks. * clutter/clutter-label.c: Extra debug info * configure.ac: Require gdk-pixbuf-xlib-2.0
566 lines
12 KiB
C
566 lines
12 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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#include "config.h"
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#include <stdlib.h>
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#include "clutter-main.h"
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#include "clutter-element.h"
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#include "clutter-stage.h"
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#include "clutter-private.h"
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#include <gst/gst.h> /* for gst_init() */
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typedef struct
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{
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GSource source;
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Display *display;
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GPollFD event_poll_fd;
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}
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ClutterXEventSource;
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typedef void (*ClutterXEventFunc) (XEvent *xev, gpointer user_data);
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static gboolean __clutter_has_debug = FALSE;
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static gboolean __clutter_has_fps = FALSE;
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static ClutterMainContext *ClutterCntx = NULL;
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static gboolean
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x_event_prepare (GSource *source,
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gint *timeout)
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{
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Display *display = ((ClutterXEventSource*)source)->display;
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*timeout = -1;
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return XPending (display);
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}
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static gboolean
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x_event_check (GSource *source)
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{
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ClutterXEventSource *display_source = (ClutterXEventSource*)source;
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gboolean retval;
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if (display_source->event_poll_fd.revents & G_IO_IN)
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retval = XPending (display_source->display);
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else
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retval = FALSE;
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return retval;
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}
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static gboolean
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x_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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Display *display = ((ClutterXEventSource*)source)->display;
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ClutterXEventFunc event_func = (ClutterXEventFunc) callback;
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XEvent xev;
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if (XPending (display))
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{
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XNextEvent (display, &xev);
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if (event_func)
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(*event_func) (&xev, user_data);
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}
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return TRUE;
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}
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static const GSourceFuncs x_event_funcs = {
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x_event_prepare,
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x_event_check,
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x_event_dispatch,
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NULL
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};
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static void
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translate_key_event (ClutterKeyEvent *event,
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XEvent *xevent)
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{
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event->type = xevent->xany.type
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== KeyPress ? CLUTTER_KEY_PRESS : CLUTTER_KEY_RELEASE;
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event->time = xevent->xkey.time;
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event->modifier_state = xevent->xkey.state; /* FIXME: handle modifiers */
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event->hardware_keycode = xevent->xkey.keycode;
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event->keyval = XKeycodeToKeysym(xevent->xkey.display,
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xevent->xkey.keycode,
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0 ); /* FIXME: index with modifiers */
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}
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static void
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translate_button_event (ClutterButtonEvent *event,
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XEvent *xevent)
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{
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/* FIXME: catch double click */
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CLUTTER_DBG("button event at %ix%i", xevent->xbutton.x, xevent->xbutton.y);
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event->type = xevent->xany.type
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== ButtonPress ? CLUTTER_BUTTON_PRESS : CLUTTER_BUTTON_RELEASE;
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event->time = xevent->xbutton.time;
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event->x = xevent->xbutton.x;
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event->y = xevent->xbutton.y;
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event->modifier_state = xevent->xbutton.state; /* includes button masks */
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event->button = xevent->xbutton.button;
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}
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static void
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translate_motion_event (ClutterMotionEvent *event,
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XEvent *xevent)
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{
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event->type = CLUTTER_MOTION;
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event->time = xevent->xbutton.time;
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event->x = xevent->xmotion.x;
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event->y = xevent->xmotion.y;
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event->modifier_state = xevent->xmotion.state;
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}
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static void
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clutter_dispatch_x_event (XEvent *xevent,
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gpointer data)
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{
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ClutterMainContext *ctx = CLUTTER_CONTEXT ();
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ClutterEvent event;
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ClutterStage *stage = ctx->stage;
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gboolean emit_input_event = FALSE;
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switch (xevent->type)
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{
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case Expose:
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{
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XEvent foo_xev;
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/* Cheap compress */
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while (XCheckTypedWindowEvent(ctx->xdpy,
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xevent->xexpose.window,
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Expose,
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&foo_xev));
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/* FIXME: need to make stage an 'element' so can que
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* a paint direct from there rather than hack here...
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*/
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clutter_element_queue_redraw (CLUTTER_ELEMENT (stage));
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}
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break;
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case KeyPress:
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translate_key_event ((ClutterKeyEvent *) &event, xevent);
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g_signal_emit_by_name (stage, "key-press-event", &event);
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emit_input_event = TRUE;
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break;
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case KeyRelease:
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translate_key_event ((ClutterKeyEvent *) &event, xevent);
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g_signal_emit_by_name (stage, "key-release-event", &event);
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emit_input_event = TRUE;
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break;
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case ButtonPress:
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translate_button_event ((ClutterButtonEvent *) &event, xevent);
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g_signal_emit_by_name (stage, "button-press-event", &event);
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emit_input_event = TRUE;
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break;
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case ButtonRelease:
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translate_button_event ((ClutterButtonEvent *) &event, xevent);
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g_signal_emit_by_name (stage, "button-release-event", &event);
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emit_input_event = TRUE;
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break;
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case MotionNotify:
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translate_motion_event ((ClutterMotionEvent *) &event, xevent);
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g_signal_emit_by_name (stage, "motion-event", &event);
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emit_input_event = TRUE;
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break;
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}
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if (emit_input_event)
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g_signal_emit_by_name (stage, "input-event", &event);
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}
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static void
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events_init()
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{
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GMainContext *gmain_context;
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int connection_number;
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GSource *source;
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ClutterXEventSource *display_source;
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gmain_context = g_main_context_default ();
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g_main_context_ref (gmain_context);
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connection_number = ConnectionNumber (ClutterCntx->xdpy);
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source = g_source_new ((GSourceFuncs *)&x_event_funcs,
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sizeof (ClutterXEventSource));
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display_source = (ClutterXEventSource *)source;
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display_source->event_poll_fd.fd = connection_number;
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display_source->event_poll_fd.events = G_IO_IN;
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display_source->display = ClutterCntx->xdpy;
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g_source_add_poll (source, &display_source->event_poll_fd);
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g_source_set_can_recurse (source, TRUE);
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g_source_set_callback (source,
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(GSourceFunc) clutter_dispatch_x_event,
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NULL /* no userdata */, NULL);
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g_source_attach (source, gmain_context);
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g_source_unref (source);
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}
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static gboolean
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clutter_want_fps(void)
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{
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return __clutter_has_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 = CLUTTER_CONTEXT();
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ClutterStage *stage = ctx->stage;
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ClutterColor stage_color;
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static GTimer *timer = NULL;
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static guint timer_n_frames = 0;
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/* FIXME: Should move all this into stage...
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*/
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CLUTTER_DBG("@@@ Redraw enter @@@");
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clutter_threads_enter ();
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if (clutter_want_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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clutter_stage_get_color (stage, &stage_color);
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glClearColor(((float) stage_color.red / 0xff * 1.0),
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((float) stage_color.green / 0xff * 1.0),
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((float) stage_color.blue / 0xff * 1.0),
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0.0);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glDisable(GL_LIGHTING);
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glDisable(GL_DEPTH_TEST);
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clutter_element_paint (CLUTTER_ELEMENT (stage));
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if (clutter_stage_get_xwindow (stage))
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{
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#if 0
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unsigned int retraceCount;
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/* Wait for vertical retrace */
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/* glXGetVideoSyncSGI(&retraceCount); */
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/* glXWaitVideoSyncSGI(2, (retraceCount+1)%2, &retraceCount); */
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glXWaitVideoSyncSGI(1, 0, &retraceCount);
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#endif
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glXSwapBuffers(ctx->xdpy, clutter_stage_get_xwindow (stage));
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}
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else
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{
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glXWaitGL();
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CLUTTER_GLERR();
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}
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if (clutter_want_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_threads_leave ();
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CLUTTER_DBG("@@@ Redraw leave @@@");
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}
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/**
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* clutter_main_quit:
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*
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* FIXME
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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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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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* FIXME
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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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* FIXME
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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 (!context->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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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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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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g_object_unref (context->stage);
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g_free (context);
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}
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}
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/**
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* clutter_threads_enter:
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*
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* FIXME
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*/
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void
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clutter_threads_enter(void)
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{
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ClutterMainContext *context = CLUTTER_CONTEXT ();
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g_mutex_lock (context->gl_lock);
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}
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/**
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* clutter_threads_leave:
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*
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* FIXME
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*/
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void
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clutter_threads_leave (void)
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{
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ClutterMainContext *context = CLUTTER_CONTEXT ();
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g_mutex_unlock (context->gl_lock);
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}
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Display*
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clutter_xdisplay (void)
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{
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return ClutterCntx->xdpy;
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}
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int
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clutter_xscreen (void)
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{
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return ClutterCntx->xscreen;
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}
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/**
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* clutter_root_xwindow:
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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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Window
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clutter_root_xwindow (void)
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{
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return ClutterCntx->xwin_root;
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}
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/**
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* clutter_want_debug:
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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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gboolean
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clutter_want_debug (void)
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{
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return __clutter_has_debug;
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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 (!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->is_initialized = FALSE;
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ClutterCntx = ctx;
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}
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return ClutterCntx;
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}
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static gboolean
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is_gl_version_at_least_12 (void)
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{
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#define NON_VENDOR_VERSION_MAX_LEN 32
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gchar non_vendor_version[NON_VENDOR_VERSION_MAX_LEN];
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const gchar *version;
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gint i = 0;
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version = (const gchar*)glGetString(GL_VERSION);
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while ( ((version[i] <= '9' && version[i] >= '0') || version[i] == '.')
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&& i < NON_VENDOR_VERSION_MAX_LEN)
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{
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non_vendor_version[i] = version[i];
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i++;
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}
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non_vendor_version[i] = '\0';
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if (strstr (non_vendor_version, "1.0") == NULL
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&& strstr (non_vendor_version, "1.0") == NULL)
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return TRUE;
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return FALSE;
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}
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/**
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* clutter_init:
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* @argc: FIXME
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* @argv: FIXME
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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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int
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clutter_init (int *argc, char ***argv)
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{
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ClutterMainContext *context;
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static gboolean is_initialized = FALSE;
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if (is_initialized)
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return 1;
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context = clutter_context_get_default ();
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if (g_getenv ("CLUTTER_DEBUG"))
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__clutter_has_debug = TRUE;
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if (g_getenv ("CLUTTER_SHOW_FPS"))
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__clutter_has_fps = TRUE;
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g_type_init();
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if (!g_thread_supported ())
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g_thread_init (NULL);
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XInitThreads();
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gst_init (argc, argv);
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context->main_loops = NULL;
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context->main_loop_level = 0;
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if ((context->xdpy = XOpenDisplay (g_getenv ("DISPLAY"))) == NULL)
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{
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g_critical ("Unable to connect to X DISPLAY.");
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return -1;
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}
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context->xscreen = DefaultScreen(context->xdpy);
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context->xwin_root = RootWindow(context->xdpy,
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context->xscreen);
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context->font_map = PANGO_FT2_FONT_MAP (pango_ft2_font_map_new ());
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pango_ft2_font_map_set_resolution (context->font_map, 96.0, 96.0);
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context->gl_lock = g_mutex_new ();
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context->stage = CLUTTER_STAGE (clutter_stage_get_default ());
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g_return_val_if_fail (CLUTTER_IS_STAGE (context->stage), -3);
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clutter_element_realize (CLUTTER_ELEMENT (context->stage));
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g_return_val_if_fail
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(CLUTTER_ELEMENT_IS_REALIZED(CLUTTER_ELEMENT(context->stage)), -4);
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/* At least GL 1.2 is needed for CLAMP_TO_EDGE */
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g_return_val_if_fail(is_gl_version_at_least_12 (), -5);
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events_init ();
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context->is_initialized = TRUE;
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return 1;
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}
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