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mutter-performance-source/src/compositor/mutter/compositor-mutter.c
Tomas Frydrych 07c1003905 Live previews for hidden windows. 
ClutterActors for hidden windows (such windows on different than active
workspaces and windows that are minimized) are available, and reflect the
actual state of the window. This is intended for use in task-switchers etc.

This feature is disabled by default (due to increased demand on resources),
and can be enabled through the metacity/general/live_hidden_windows gconf key.

A trivial sample window switcher is included in the scratch plugin (activated
by clicking on the slide out panel).
2008-10-24 10:07:24 +01:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#define _GNU_SOURCE
#define _XOPEN_SOURCE 500 /* for usleep() */
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <unistd.h>
#include <gdk/gdk.h>
#include "../../core/window-private.h"
#include "display.h"
#include "screen.h"
#include "frame.h"
#include "errors.h"
#include "window.h"
#include "compositor-private.h"
#include "compositor-mutter.h"
#include "mutter-plugin-manager.h"
#include "tidy/tidy-texture-frame.h"
#include "xprops.h"
#include "prefs.h"
#include "mutter-shaped-texture.h"
#include <X11/Xatom.h>
#include <X11/Xlibint.h>
#include <X11/extensions/shape.h>
#include <X11/extensions/Xcomposite.h>
#include <X11/extensions/Xdamage.h>
#include <X11/extensions/Xfixes.h>
#include <X11/extensions/Xrender.h>
#include <clutter/clutter.h>
#include <clutter/clutter-group.h>
#include <clutter/x11/clutter-x11.h>
#ifdef HAVE_GLX_TEXTURE_PIXMAP
#include <clutter/glx/clutter-glx.h>
#endif /* HAVE_GLX_TEXTURE_PIXMAP */
#include <cogl/cogl.h>
#define SHADOW_RADIUS 8
#define SHADOW_OPACITY 0.9
#define SHADOW_OFFSET_X (SHADOW_RADIUS)
#define SHADOW_OFFSET_Y (SHADOW_RADIUS)
#define MAX_TILE_SZ 8 /* Must be <= shaddow radius */
#define TILE_WIDTH (3*MAX_TILE_SZ)
#define TILE_HEIGHT (3*MAX_TILE_SZ)
#define CHECK_LIST_INTEGRITY_START(list) \
{int len2__; int len__ = g_list_length(list);
#define CHECK_LIST_INTEGRITY_END(list) \
len2__ = g_list_length(list); \
if (len__ != len2__) \
g_warning ("Integrity check of list failed at %s:%d\n", \
__FILE__, __LINE__); }
/*
* Register GType wrapper for XWindowAttributes, so we do not have to
* query window attributes in the MutterWindow constructor but can pass
* them as a property to the constructor (so we can gracefully handle the case
* where no attributes can be retrieved).
*
* NB -- we only need a subset of the attributes; at some point we might want
* to just store the relevant values rather than the whole struct.
*/
#define META_TYPE_XATTRS (meta_xattrs_get_type ())
GType meta_xattrs_get_type (void) G_GNUC_CONST;
static XWindowAttributes *
meta_xattrs_copy (const XWindowAttributes *attrs)
{
XWindowAttributes *result;
g_return_val_if_fail (attrs != NULL, NULL);
result = (XWindowAttributes*) Xmalloc (sizeof (XWindowAttributes));
*result = *attrs;
return result;
}
static void
meta_xattrs_free (XWindowAttributes *attrs)
{
g_return_if_fail (attrs != NULL);
XFree (attrs);
}
GType
meta_xattrs_get_type (void)
{
static GType our_type = 0;
if (!our_type)
our_type = g_boxed_type_register_static ("XWindowAttributes",
(GBoxedCopyFunc) meta_xattrs_copy,
(GBoxedFreeFunc) meta_xattrs_free);
return our_type;
}
static unsigned char* shadow_gaussian_make_tile (void);
#ifdef HAVE_COMPOSITE_EXTENSIONS
static inline gboolean
composite_at_least_version (MetaDisplay *display, int maj, int min)
{
static int major = -1;
static int minor = -1;
if (major == -1)
meta_display_get_compositor_version (display, &major, &minor);
return (major > maj || (major == maj && minor >= min));
}
#endif
typedef struct _Mutter
{
MetaCompositor compositor;
MetaDisplay *display;
Atom atom_x_root_pixmap;
Atom atom_x_set_root;
Atom atom_net_wm_window_opacity;
ClutterActor *shadow_src;
gboolean show_redraw : 1;
gboolean debug : 1;
} Mutter;
typedef struct _MetaCompScreen
{
MetaScreen *screen;
ClutterActor *stage, *window_group, *overlay_group;
GList *windows;
GHashTable *windows_by_xid;
MetaWindow *focus_window;
Window output;
GSList *dock_windows;
gint switch_workspace_in_progress;
MutterPluginManager *plugin_mgr;
} MetaCompScreen;
/*
* MutterWindow implementation
*/
struct _MutterWindowPrivate
{
XWindowAttributes attrs;
MetaWindow *window;
Window xwindow;
MetaScreen *screen;
ClutterActor *actor;
ClutterActor *shadow;
Pixmap back_pixmap;
MetaCompWindowType type;
Damage damage;
guint8 opacity;
/*
* These need to be counters rather than flags, since more plugins
* can implement same effect; the practicality of stacking effects
* might be dubious, but we have to at least handle it correctly.
*/
gint minimize_in_progress;
gint maximize_in_progress;
gint unmaximize_in_progress;
gint map_in_progress;
gint destroy_in_progress;
gboolean needs_shadow : 1;
gboolean shaped : 1;
gboolean destroy_pending : 1;
gboolean argb32 : 1;
gboolean disposed : 1;
gboolean is_minimized : 1;
/* Desktop switching flags */
gboolean needs_map : 1;
gboolean needs_unmap : 1;
gboolean needs_repair : 1;
};
enum
{
PROP_MCW_META_WINDOW = 1,
PROP_MCW_META_SCREEN,
PROP_MCW_X_WINDOW,
PROP_MCW_X_WINDOW_ATTRIBUTES
};
static void mutter_window_class_init (MutterWindowClass *klass);
static void mutter_window_init (MutterWindow *self);
static void mutter_window_dispose (GObject *object);
static void mutter_window_finalize (GObject *object);
static void mutter_window_constructed (GObject *object);
static void mutter_window_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void mutter_window_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void mutter_window_query_window_type (MutterWindow *self);
static void mutter_window_detach (MutterWindow *self);
G_DEFINE_TYPE (MutterWindow, mutter_window, CLUTTER_TYPE_GROUP);
static void
mutter_window_class_init (MutterWindowClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GParamSpec *pspec;
g_type_class_add_private (klass, sizeof (MutterWindowPrivate));
object_class->dispose = mutter_window_dispose;
object_class->finalize = mutter_window_finalize;
object_class->set_property = mutter_window_set_property;
object_class->get_property = mutter_window_get_property;
object_class->constructed = mutter_window_constructed;
pspec = g_param_spec_pointer ("meta-window",
"MetaWindow",
"MetaWindow",
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class,
PROP_MCW_META_WINDOW,
pspec);
pspec = g_param_spec_pointer ("meta-screen",
"MetaScreen",
"MetaScreen",
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class,
PROP_MCW_META_SCREEN,
pspec);
pspec = g_param_spec_ulong ("x-window",
"Window",
"Window",
0,
G_MAXULONG,
0,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class,
PROP_MCW_X_WINDOW,
pspec);
pspec = g_param_spec_boxed ("x-window-attributes",
"XWindowAttributes",
"XWindowAttributes",
META_TYPE_XATTRS,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class,
PROP_MCW_X_WINDOW_ATTRIBUTES,
pspec);
}
static void
mutter_window_init (MutterWindow *self)
{
MutterWindowPrivate *priv;
priv = self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
MUTTER_TYPE_COMP_WINDOW,
MutterWindowPrivate);
priv->opacity = 0xff;
}
static gboolean is_shaped (MetaDisplay *display, Window xwindow);
static gboolean mutter_window_has_shadow (MutterWindow *self);
static void update_shape (Mutter *compositor,
MutterWindow *cw);
static void
mutter_window_constructed (GObject *object)
{
MutterWindow *self = MUTTER_WINDOW (object);
MutterWindowPrivate *priv = self->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
Window xwindow = priv->xwindow;
Display *xdisplay = meta_display_get_xdisplay (display);
XRenderPictFormat *format;
mutter_window_query_window_type (self);
#ifdef HAVE_SHAPE
/* Listen for ShapeNotify events on the window */
if (meta_display_has_shape (display))
XShapeSelectInput (xdisplay, xwindow, ShapeNotifyMask);
#endif
priv->shaped = is_shaped (display, xwindow);
if (priv->attrs.class == InputOnly)
priv->damage = None;
else
priv->damage = XDamageCreate (xdisplay, xwindow, XDamageReportNonEmpty);
format = XRenderFindVisualFormat (xdisplay, priv->attrs.visual);
if (format && format->type == PictTypeDirect && format->direct.alphaMask)
priv->argb32 = TRUE;
if (mutter_window_has_shadow (self))
{
Mutter *compositor =
(Mutter*)meta_display_get_compositor (display);
priv->shadow =
tidy_texture_frame_new (CLUTTER_TEXTURE (compositor->shadow_src),
MAX_TILE_SZ,
MAX_TILE_SZ,
MAX_TILE_SZ,
MAX_TILE_SZ);
clutter_actor_set_position (priv->shadow,
SHADOW_OFFSET_X , SHADOW_OFFSET_Y);
clutter_container_add_actor (CLUTTER_CONTAINER (self), priv->shadow);
}
priv->actor = mutter_shaped_texture_new ();
clutter_container_add_actor (CLUTTER_CONTAINER (self), priv->actor);
update_shape ((Mutter *)
meta_display_get_compositor (display),
self);
}
static void
mutter_window_dispose (GObject *object)
{
MutterWindow *self = MUTTER_WINDOW (object);
MutterWindowPrivate *priv = self->priv;
MetaScreen *screen;
MetaDisplay *display;
Display *xdisplay;
MetaCompScreen *info;
if (priv->disposed)
return;
priv->disposed = TRUE;
screen = priv->screen;
display = meta_screen_get_display (screen);
xdisplay = meta_display_get_xdisplay (display);
info = meta_screen_get_compositor_data (screen);
mutter_window_detach (self);
if (priv->damage != None)
{
meta_error_trap_push (display);
XDamageDestroy (xdisplay, priv->damage);
meta_error_trap_pop (display, FALSE);
priv->damage = None;
}
/*
* Check we are not in the dock list -- FIXME (do this in a cleaner way)
*/
if (priv->type == META_COMP_WINDOW_DOCK)
info->dock_windows = g_slist_remove (info->dock_windows, self);
info->windows = g_list_remove (info->windows, (gconstpointer) self);
g_hash_table_remove (info->windows_by_xid, (gpointer) priv->xwindow);
G_OBJECT_CLASS (mutter_window_parent_class)->dispose (object);
}
static void
mutter_window_finalize (GObject *object)
{
G_OBJECT_CLASS (mutter_window_parent_class)->finalize (object);
}
static void
mutter_window_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MutterWindowPrivate *priv = MUTTER_WINDOW (object)->priv;
switch (prop_id)
{
case PROP_MCW_META_WINDOW:
priv->window = g_value_get_pointer (value);
break;
case PROP_MCW_META_SCREEN:
priv->screen = g_value_get_pointer (value);
break;
case PROP_MCW_X_WINDOW:
priv->xwindow = g_value_get_ulong (value);
break;
case PROP_MCW_X_WINDOW_ATTRIBUTES:
priv->attrs = *((XWindowAttributes*)g_value_get_boxed (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
mutter_window_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MutterWindowPrivate *priv = MUTTER_WINDOW (object)->priv;
switch (prop_id)
{
case PROP_MCW_META_WINDOW:
g_value_set_pointer (value, priv->window);
break;
case PROP_MCW_META_SCREEN:
g_value_set_pointer (value, priv->screen);
break;
case PROP_MCW_X_WINDOW:
g_value_set_ulong (value, priv->xwindow);
break;
case PROP_MCW_X_WINDOW_ATTRIBUTES:
g_value_set_boxed (value, &priv->attrs);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static MutterWindow*
find_window_for_screen (MetaScreen *screen, Window xwindow)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
if (info == NULL)
return NULL;
return g_hash_table_lookup (info->windows_by_xid, (gpointer) xwindow);
}
static MutterWindow *
find_window_in_display (MetaDisplay *display, Window xwindow)
{
GSList *index;
for (index = meta_display_get_screens (display);
index;
index = index->next)
{
MutterWindow *cw = find_window_for_screen (index->data, xwindow);
if (cw != NULL)
return cw;
}
return NULL;
}
static MutterWindow *
find_window_for_child_window_in_display (MetaDisplay *display, Window xwindow)
{
Window ignored1, *ignored2, parent;
guint ignored_children;
XQueryTree (meta_display_get_xdisplay (display), xwindow, &ignored1,
&parent, &ignored2, &ignored_children);
if (parent != None)
return find_window_in_display (display, parent);
return NULL;
}
static void
mutter_window_query_window_type (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
Window xwindow = priv->xwindow;
gint n_atoms;
Atom *atoms;
gint i;
if (priv->attrs.override_redirect)
{
priv->type = META_COMP_WINDOW_OVERRIDE;
return;
}
/*
* If the window is managed by the WM, get the type from the WM,
* otherwise do it the hard way.
*/
if (priv->window && meta_window_get_type_atom (priv->window) != None)
{
priv->type = (MetaCompWindowType) meta_window_get_type (priv->window);
return;
}
n_atoms = 0;
atoms = NULL;
/*
* Assume normal
*/
priv->type = META_COMP_WINDOW_NORMAL;
meta_prop_get_atom_list (display, xwindow,
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE),
&atoms, &n_atoms);
for (i = 0; i < n_atoms; i++)
{
if (atoms[i] ==
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE_DND))
{
priv->type = META_COMP_WINDOW_DND;
break;
}
else if (atoms[i] ==
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE_DESKTOP))
{
priv->type = META_COMP_WINDOW_DESKTOP;
break;
}
else if (atoms[i] ==
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE_DOCK))
{
priv->type = META_COMP_WINDOW_DOCK;
break;
}
else if (atoms[i] ==
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE_TOOLBAR) ||
atoms[i] ==
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE_MENU) ||
atoms[i] ==
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE_DIALOG) ||
atoms[i] ==
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE_NORMAL) ||
atoms[i] ==
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE_UTILITY) ||
atoms[i] ==
meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE_SPLASH))
{
priv->type = META_COMP_WINDOW_NORMAL;
break;
}
}
meta_XFree (atoms);
}
static gboolean
is_shaped (MetaDisplay *display, Window xwindow)
{
Display *xdisplay = meta_display_get_xdisplay (display);
gint xws, yws, xbs, ybs;
guint wws, hws, wbs, hbs;
gint bounding_shaped, clip_shaped;
if (meta_display_has_shape (display))
{
XShapeQueryExtents (xdisplay, xwindow, &bounding_shaped,
&xws, &yws, &wws, &hws, &clip_shaped,
&xbs, &ybs, &wbs, &hbs);
return (bounding_shaped != 0);
}
return FALSE;
}
static gboolean
mutter_window_has_shadow (MutterWindow *self)
{
MutterWindowPrivate * priv = self->priv;
/*
* Always put a shadow around windows with a frame - This should override
* the restriction about not putting a shadow around shaped windows
* as the frame might be the reason the window is shaped
*/
if (priv->window)
{
if (meta_window_get_frame (priv->window))
{
meta_verbose ("Window 0x%x has shadow because it has a frame\n",
(guint)priv->xwindow);
return TRUE;
}
}
/*
* Do not add shadows to ARGB windows (since they are probably transparent)
*/
if (priv->argb32 || priv->opacity != 0xff)
{
meta_verbose ("Window 0x%x has no shadow as it is ARGB\n",
(guint)priv->xwindow);
return FALSE;
}
/*
* Never put a shadow around shaped windows
*/
if (priv->shaped)
{
meta_verbose ("Window 0x%x has no shadow as it is shaped\n",
(guint)priv->xwindow);
return FALSE;
}
/*
* Add shadows to override redirect windows (e.g., Gtk menus).
* This must have lower priority than window shape test.
*/
if (priv->attrs.override_redirect)
{
meta_verbose ("Window 0x%x has shadow because it is override redirect.\n",
(guint)priv->xwindow);
return TRUE;
}
/*
* Don't put shadow around DND icon windows
*/
if (priv->type == META_COMP_WINDOW_DND ||
priv->type == META_COMP_WINDOW_DESKTOP)
{
meta_verbose ("Window 0x%x has no shadow as it is DND or Desktop\n",
(guint)priv->xwindow);
return FALSE;
}
if (priv->type == META_COMP_WINDOW_MENU
#if 0
|| priv->type == META_COMP_WINDOW_DROP_DOWN_MENU
#endif
)
{
meta_verbose ("Window 0x%x has shadow as it is a menu\n",
(guint)priv->xwindow);
return TRUE;
}
#if 0
if (priv->type == META_COMP_WINDOW_TOOLTIP)
{
meta_verbose ("Window 0x%x has shadow as it is a tooltip\n",
(guint)priv->xwindow);
return TRUE;
}
#endif
meta_verbose ("Window 0x%x has no shadow as it fell through\n",
(guint)priv->xwindow);
return FALSE;
}
Window
mutter_window_get_x_window (MutterWindow *mcw)
{
if (!mcw)
return None;
return mcw->priv->xwindow;
}
MetaWindow *
mutter_window_get_meta_window (MutterWindow *mcw)
{
return mcw->priv->window;
}
ClutterActor *
mutter_window_get_texture (MutterWindow *mcw)
{
return mcw->priv->actor;
}
MetaCompWindowType
mutter_window_get_window_type (MutterWindow *mcw)
{
if (!mcw)
return 0;
return mcw->priv->type;
}
gboolean
mutter_window_is_override_redirect (MutterWindow *mcw)
{
if (!mcw->priv->window)
return TRUE;
return FALSE;
}
gint
mutter_window_get_workspace (MutterWindow *mcw)
{
MutterWindowPrivate *priv;
MetaWorkspace *workspace;
if (!mcw)
return -1;
priv = mcw->priv;
if (!priv->window || meta_window_is_on_all_workspaces (priv->window))
return -1;
workspace = meta_window_get_workspace (priv->window);
return meta_workspace_index (workspace);
}
gboolean
mutter_window_is_hidden (MutterWindow *mcw)
{
MutterWindowPrivate *priv;
if (!mcw)
return TRUE;
priv = mcw->priv;
if (!priv->window)
return FALSE;
return meta_window_is_hidden (priv->window);
}
static void repair_win (MutterWindow *cw);
static void map_win (MutterWindow *cw);
static void unmap_win (MutterWindow *cw);
static void
mutter_finish_workspace_switch (MetaCompScreen *info)
{
GList *last = g_list_last (info->windows);
GList *l;
/* printf ("FINISHING DESKTOP SWITCH\n"); */
if (!meta_prefs_get_live_hidden_windows ())
{
/* When running in the traditional mode where hidden windows get
* unmapped, we need to fix up the map status for each window, since
* we are ignoring unmap requests during the effect.
*/
l = last;
while (l)
{
MutterWindow *cw = l->data;
MutterWindowPrivate *priv = cw->priv;
if (priv->needs_map && !priv->needs_unmap)
{
map_win (cw);
}
if (priv->needs_unmap)
{
unmap_win (cw);
}
l = l->prev;
}
}
/*
* Fix up stacking order in case the plugin messed it up.
*/
l = last;
while (l)
{
ClutterActor *a = l->data;
MutterWindow *mw = l->data;
MetaWindow *window = mw->priv->window;
/*
* If this window is not marked as hidden, we raise it.
* If it has no MetaWindow associated (i.e., override redirect), we
* raise it too. Everything else we push to the bottom.
*/
if (!window || !meta_window_is_hidden (window))
{
#if 0
printf ("raising %p [0x%x] (%s) to top\n",
a,
(guint)mw->priv->xwindow,
mw->priv->window ? mw->priv->window->desc : "unknown");
#endif
clutter_actor_raise_top (a);
}
else
{
#if 0
printf ("lowering %p [0x%x] (%s) to bottom\n",
a,
(guint)mw->priv->xwindow,
mw->priv->window ? mw->priv->window->desc : "unknown");
#endif
clutter_actor_lower_bottom (a);
}
l = l->prev;
}
/* printf ("... FINISHED DESKTOP SWITCH\n"); */
}
void
mutter_window_effect_completed (MutterWindow *cw, gulong event)
{
MutterWindowPrivate *priv = cw->priv;
MetaScreen *screen = priv->screen;
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
ClutterActor *actor = CLUTTER_ACTOR (cw);
switch (event)
{
case MUTTER_PLUGIN_MINIMIZE:
{
ClutterActor *a = CLUTTER_ACTOR (cw);
priv->minimize_in_progress--;
if (priv->minimize_in_progress < 0)
{
g_warning ("Error in minimize accounting.");
priv->minimize_in_progress = 0;
}
if (!priv->minimize_in_progress)
{
priv->is_minimized = TRUE;
/*
* We must ensure that the minimized actor is pushed down the stack
* (the XConfigureEvent has 'above' semantics, i.e., when a window
* is lowered, we get a bunch of 'raise' notifications, but might
* not get any notification for the window that has been lowered.
*/
clutter_actor_lower_bottom (a);
/* Make sure that after the effect finishes, the actor is
* made visible for sake of live previews.
*/
clutter_actor_show (a);
}
}
break;
case MUTTER_PLUGIN_MAP:
/*
* Make sure that the actor is at the correct place in case
* the plugin fscked.
*/
priv->map_in_progress--;
if (priv->map_in_progress < 0)
{
g_warning ("Error in map accounting.");
priv->map_in_progress = 0;
}
if (!priv->map_in_progress)
{
priv->is_minimized = FALSE;
clutter_actor_set_anchor_point (actor, 0, 0);
clutter_actor_set_position (actor, priv->attrs.x, priv->attrs.y);
clutter_actor_show_all (actor);
}
break;
case MUTTER_PLUGIN_DESTROY:
priv->destroy_in_progress--;
if (priv->destroy_in_progress < 0)
{
g_warning ("Error in destroy accounting.");
priv->destroy_in_progress = 0;
}
if (!priv->destroy_in_progress)
{
clutter_actor_destroy (actor);
}
break;
case MUTTER_PLUGIN_UNMAXIMIZE:
priv->unmaximize_in_progress--;
if (priv->unmaximize_in_progress < 0)
{
g_warning ("Error in unmaximize accounting.");
priv->unmaximize_in_progress = 0;
}
if (!priv->unmaximize_in_progress)
{
clutter_actor_set_position (actor, priv->attrs.x, priv->attrs.y);
mutter_window_detach (cw);
repair_win (cw);
}
break;
case MUTTER_PLUGIN_MAXIMIZE:
priv->maximize_in_progress--;
if (priv->maximize_in_progress < 0)
{
g_warning ("Error in maximize accounting.");
priv->maximize_in_progress = 0;
}
if (!priv->maximize_in_progress)
{
clutter_actor_set_position (actor, priv->attrs.x, priv->attrs.y);
mutter_window_detach (cw);
repair_win (cw);
}
break;
case MUTTER_PLUGIN_SWITCH_WORKSPACE:
/* FIXME -- must redo stacking order */
info->switch_workspace_in_progress--;
if (info->switch_workspace_in_progress < 0)
{
g_warning ("Error in workspace_switch accounting!");
info->switch_workspace_in_progress = 0;
}
if (!info->switch_workspace_in_progress)
mutter_finish_workspace_switch (info);
break;
default: ;
}
}
static void
clutter_cmp_destroy (MetaCompositor *compositor)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
/*
* If force is TRUE, free the back pixmap; if FALSE, only free it if the
* backing pixmap has actually changed.
*/
static void
mutter_window_detach (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
if (!priv->back_pixmap)
return;
XFreePixmap (xdisplay, priv->back_pixmap);
priv->back_pixmap = None;
}
static void
destroy_win (MutterWindow *cw, gboolean no_effect)
{
MetaCompScreen *info;
MutterWindowPrivate *priv;
MetaScreen *screen;
if (!cw)
return;
priv = cw->priv;
screen = priv->screen;
info = meta_screen_get_compositor_data (screen);
/*
* We remove the window from internal lookup hashes and thus any other
* unmap events etc fail
*/
info->windows = g_list_remove (info->windows, (gconstpointer) cw);
g_hash_table_remove (info->windows_by_xid, (gpointer)priv->xwindow);
if (no_effect || priv->type == META_COMP_WINDOW_OVERRIDE)
{
/*
* No effects, just kill it.
*/
clutter_actor_destroy (CLUTTER_ACTOR (cw));
return;
}
/*
* If a plugin manager is present, try to run an effect; if no effect of this
* type is present, destroy the actor.
*/
priv->destroy_in_progress++;
if (!info->plugin_mgr ||
!mutter_plugin_manager_event_simple (info->plugin_mgr,
cw,
MUTTER_PLUGIN_DESTROY))
{
priv->destroy_in_progress--;
clutter_actor_destroy (CLUTTER_ACTOR (cw));
}
}
static void
restack_win (MutterWindow *cw, Window above)
{
MutterWindowPrivate *priv = cw->priv;
MetaScreen *screen = priv->screen;
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
Window previous_above;
GList *sibling, *next;
gboolean hide = FALSE;
gboolean live_mode;
live_mode = meta_prefs_get_live_hidden_windows ();
if (priv->window && meta_window_is_hidden (priv->window))
hide = TRUE;
sibling = g_list_find (info->windows, (gconstpointer) cw);
next = g_list_next (sibling);
previous_above = None;
if (next)
{
MutterWindow *ncw = next->data;
previous_above = ncw->priv->xwindow;
}
/* If above is set to None, the window whose state was changed is on
* the bottom of the stack with respect to sibling.
*/
if (above == None)
{
#if 0
printf ("Raising to top %p [0x%x] (%s)\n",
cw, (guint) priv->xwindow,
priv->window ? priv->window->desc : "unknown");
#endif
/* Insert at bottom of window stack */
CHECK_LIST_INTEGRITY_START(info->windows)
info->windows = g_list_delete_link (info->windows, sibling);
info->windows = g_list_append (info->windows, cw);
CHECK_LIST_INTEGRITY_END(info->windows)
if (!info->switch_workspace_in_progress)
{
clutter_actor_raise_top (CLUTTER_ACTOR (cw));
}
}
else if (previous_above != above)
{
GList *index;
/* Find the window that matches 'above'; if the window is hidden (i.e.,
* minimized, on a different desktop) find the first window above it tha
* is not and use it instead; if we cannot find any such window then
* fallback to raise to top (without this, we end up stacking up the act
* in the wrong place, and it probably will not be visible at all).
*/
for (index = info->windows; index; index = index->next)
{
MutterWindow *cw2 = (MutterWindow *) index->data;
if (cw2->priv->xwindow == above)
{
if (live_mode && !hide && cw2->priv->window &&
meta_window_is_hidden (cw2->priv->window))
{
index = index->prev;
while (index)
{
MutterWindow *prev = index->data;
if (!prev->priv->window ||
!meta_window_is_hidden (prev->priv->window))
{
break;
}
index = index->prev;
}
}
break;
}
}
if (index != NULL)
{
if (index != sibling)
{
ClutterActor *above_win = index->data;
MutterWindow *cw2 = index->data;
CHECK_LIST_INTEGRITY_START(info->windows)
info->windows = g_list_delete_link (info->windows, sibling);
info->windows = g_list_insert_before (info->windows, index, cw);
CHECK_LIST_INTEGRITY_END(info->windows)
#if 0
printf ("Raising %p [0x%x] (%s) hidden %d, above %p [0x%x] (%s)\n",
cw, (guint) priv->xwindow,
priv->window ? priv->window->desc : "unknown", hide,
cw2, (guint) cw2->priv->xwindow,
cw2->priv->window ? cw2->priv->window->desc : "unknown");
#endif
if (!info->switch_workspace_in_progress)
{
clutter_actor_raise (CLUTTER_ACTOR (cw), above_win);
}
}
}
else if (live_mode)
{
if (!hide)
{
#if 0
printf ("Raising to top as fallback %p [0x%x] (%s)\n",
cw, (guint) priv->xwindow,
priv->window ? priv->window->desc : "unknown");
#endif
/* Insert at bottom of window stack */
CHECK_LIST_INTEGRITY_START(info->windows)
info->windows = g_list_delete_link (info->windows, sibling);
info->windows = g_list_append (info->windows, cw);
CHECK_LIST_INTEGRITY_END(info->windows)
if (!info->switch_workspace_in_progress)
{
clutter_actor_raise_top (CLUTTER_ACTOR (cw));
}
}
else
{
#if 0
printf ("Lowering to bottom as fallback %p [0x%x] (%s)\n",
cw, (guint) priv->xwindow,
priv->window ? priv->window->desc : "unknown");
#endif
/* Insert at bottom of window stack */
CHECK_LIST_INTEGRITY_START(info->windows)
info->windows = g_list_delete_link (info->windows, sibling);
info->windows = g_list_prepend (info->windows, cw);
CHECK_LIST_INTEGRITY_END(info->windows)
if (!info->switch_workspace_in_progress)
{
clutter_actor_lower_bottom (CLUTTER_ACTOR (cw));
}
}
}
}
}
static void
resize_win (MutterWindow *cw,
int x,
int y,
int width,
int height,
int border_width,
gboolean override_redirect)
{
MutterWindowPrivate *priv = cw->priv;
if (priv->attrs.width != width || priv->attrs.height != height)
mutter_window_detach (cw);
priv->attrs.width = width;
priv->attrs.height = height;
priv->attrs.x = x;
priv->attrs.y = y;
priv->attrs.border_width = border_width;
priv->attrs.override_redirect = override_redirect;
if (priv->maximize_in_progress ||
priv->unmaximize_in_progress ||
priv->map_in_progress)
return;
clutter_actor_set_position (CLUTTER_ACTOR (cw), x, y);
}
static void
map_win (MutterWindow *cw)
{
MutterWindowPrivate *priv;
MetaCompScreen *info;
if (cw == NULL)
return;
priv = cw->priv;
info = meta_screen_get_compositor_data (priv->screen);
if (priv->attrs.map_state == IsViewable)
return;
priv->attrs.map_state = IsViewable;
/*
* Now repair the window; this ensures that the actor is correctly sized
* before we run any effects on it.
*/
priv->needs_map = FALSE;
mutter_window_detach (cw);
repair_win (cw);
/*
* Make sure the position is set correctly (we might have got moved while
* unmapped.
*/
if (!info->switch_workspace_in_progress)
{
clutter_actor_set_anchor_point (CLUTTER_ACTOR (cw), 0, 0);
clutter_actor_set_position (CLUTTER_ACTOR (cw),
cw->priv->attrs.x, cw->priv->attrs.y);
}
priv->map_in_progress++;
/*
* If a plugin manager is present, try to run an effect; if no effect of this
* type is present, destroy the actor.
*/
if (info->switch_workspace_in_progress || !info->plugin_mgr ||
!mutter_plugin_manager_event_simple (info->plugin_mgr,
cw,
MUTTER_PLUGIN_MAP))
{
clutter_actor_show_all (CLUTTER_ACTOR (cw));
priv->map_in_progress--;
priv->is_minimized = FALSE;
}
}
static void
unmap_win (MutterWindow *cw)
{
MutterWindowPrivate *priv;
MetaCompScreen *info;
if (cw == NULL)
return;
priv = cw->priv;
info = meta_screen_get_compositor_data (priv->screen);
/*
* If the needs_unmap flag is set, we carry on even if the winow is
* already marked as unmapped; this is necessary so windows temporarily
* shown during an effect (like desktop switch) are properly hidden again.
*/
if (priv->attrs.map_state == IsUnmapped && !priv->needs_unmap)
return;
if (priv->window && priv->window == info->focus_window)
info->focus_window = NULL;
if (info->switch_workspace_in_progress)
{
/*
* Cannot unmap windows while switching desktops effect is in progress.
*/
priv->needs_unmap = TRUE;
return;
}
priv->attrs.map_state = IsUnmapped;
priv->needs_unmap = FALSE;
priv->needs_map = FALSE;
if (!priv->minimize_in_progress &&
(!meta_prefs_get_live_hidden_windows () ||
priv->type == META_COMP_WINDOW_OVERRIDE))
{
clutter_actor_hide (CLUTTER_ACTOR (cw));
}
}
static void
add_win (MetaScreen *screen, MetaWindow *window, Window xwindow)
{
MetaDisplay *display = meta_screen_get_display (screen);
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
MutterWindow *cw;
MutterWindowPrivate *priv;
Display *xdisplay = meta_display_get_xdisplay (display);
XWindowAttributes attrs;
gulong events_needed;
if (info == NULL)
return;
if (xwindow == info->output)
return;
if (!XGetWindowAttributes (xdisplay, xwindow, &attrs))
return;
/*
* If Metacity has decided not to manage this window then the input events
* won't have been set on the window
*/
events_needed = PropertyChangeMask | SubstructureNotifyMask;
if (!(attrs.your_event_mask & PropertyChangeMask) ||
!(attrs.your_event_mask & SubstructureNotifyMask))
{
gulong event_mask;
event_mask = attrs.your_event_mask | events_needed;
XSelectInput (xdisplay, xwindow, event_mask);
}
meta_verbose ("add window: Meta %p, xwin 0x%x\n", window, (guint) xwindow);
cw = g_object_new (MUTTER_TYPE_COMP_WINDOW,
"meta-window", window,
"x-window", xwindow,
"meta-screen", screen,
"x-window-attributes", &attrs,
NULL);
priv = cw->priv;
clutter_actor_set_position (CLUTTER_ACTOR (cw),
priv->attrs.x, priv->attrs.y);
clutter_container_add_actor (CLUTTER_CONTAINER (info->window_group),
CLUTTER_ACTOR (cw));
clutter_actor_hide (CLUTTER_ACTOR (cw));
if (priv->type == META_COMP_WINDOW_DOCK)
{
meta_verbose ("Appending 0x%x to dock windows\n", (guint)xwindow);
info->dock_windows = g_slist_append (info->dock_windows, cw);
}
meta_verbose ("added 0x%x (%p) type:", (guint)xwindow, cw);
#if 0
switch (cw->type)
{
case META_COMP_WINDOW_NORMAL:
printf("normal"); break;
case META_COMP_WINDOW_DND:
printf("dnd"); break;
case META_COMP_WINDOW_DESKTOP:
printf("desktop"); break;
case META_COMP_WINDOW_DOCK:
printf("dock"); break;
case META_COMP_WINDOW_MENU:
printf("menu"); break;
case META_COMP_WINDOW_DROP_DOWN_MENU:
printf("menu"); break;
case META_COMP_WINDOW_TOOLTIP:
printf("tooltip"); break;
default:
printf("unknown");
break;
}
if (window && meta_window_get_frame (window))
printf(" *HAS FRAME* ");
printf("\n");
#endif
/*
* Add this to the list at the top of the stack before it is mapped so that
* map_win can find it again
*/
info->windows = g_list_prepend (info->windows, cw);
g_hash_table_insert (info->windows_by_xid, (gpointer) xwindow, cw);
if (priv->attrs.map_state == IsViewable)
{
/* Need to reset the map_state for map_win() to work */
priv->attrs.map_state = IsUnmapped;
map_win (cw);
}
}
static void
repair_win (MutterWindow *cw)
{
MutterWindowPrivate *priv = cw->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
Window xwindow = priv->xwindow;
gboolean full = FALSE;
if (xwindow == meta_screen_get_xroot (screen) ||
xwindow == clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage)))
return;
meta_error_trap_push (display);
if (priv->back_pixmap == None)
{
gint pxm_width, pxm_height;
XWindowAttributes attr;
meta_error_trap_push (display);
XGrabServer (xdisplay);
XGetWindowAttributes (xdisplay, xwindow, &attr);
if (attr.map_state == IsViewable)
priv->back_pixmap = XCompositeNameWindowPixmap (xdisplay, xwindow);
else
{
priv->back_pixmap = None;
}
XUngrabServer (xdisplay);
meta_error_trap_pop (display, FALSE);
if (priv->back_pixmap == None)
{
meta_verbose ("Unable to get named pixmap for %p\n", cw);
return;
}
clutter_x11_texture_pixmap_set_pixmap
(CLUTTER_X11_TEXTURE_PIXMAP (priv->actor),
priv->back_pixmap);
g_object_get (priv->actor,
"pixmap-width", &pxm_width,
"pixmap-height", &pxm_height,
NULL);
clutter_actor_set_size (priv->actor, pxm_width, pxm_height);
if (priv->shadow)
clutter_actor_set_size (priv->shadow, pxm_width, pxm_height);
full = TRUE;
}
/*
* TODO -- on some gfx hardware updating the whole texture instead of
* the individual rectangles is actually quicker, so we might want to
* make this a configurable option (on desktop HW with multiple pipelines
* it is usually quicker to just update the damaged parts).
*
* If we are using TFP we update the whole texture (this simply trigers
* the texture rebind).
*/
if (full
#ifdef HAVE_GLX_TEXTURE_PIXMAP
|| (CLUTTER_GLX_IS_TEXTURE_PIXMAP (priv->actor) &&
clutter_glx_texture_pixmap_using_extension
(CLUTTER_GLX_TEXTURE_PIXMAP (priv->actor)))
#endif /* HAVE_GLX_TEXTURE_PIXMAP */
)
{
XDamageSubtract (xdisplay, priv->damage, None, None);
clutter_x11_texture_pixmap_update_area
(CLUTTER_X11_TEXTURE_PIXMAP (priv->actor),
0,
0,
clutter_actor_get_width (priv->actor),
clutter_actor_get_height (priv->actor));
}
else
{
XRectangle *r_damage;
XRectangle r_bounds;
XserverRegion parts;
int i, r_count;
parts = XFixesCreateRegion (xdisplay, 0, 0);
XDamageSubtract (xdisplay, priv->damage, None, parts);
r_damage = XFixesFetchRegionAndBounds (xdisplay,
parts,
&r_count,
&r_bounds);
if (r_damage)
{
for (i = 0; i < r_count; ++i)
{
clutter_x11_texture_pixmap_update_area
(CLUTTER_X11_TEXTURE_PIXMAP (priv->actor),
r_damage[i].x,
r_damage[i].y,
r_damage[i].width,
r_damage[i].height);
}
}
XFree (r_damage);
XFixesDestroyRegion (xdisplay, parts);
}
meta_error_trap_pop (display, FALSE);
priv->needs_repair = FALSE;
}
static void
process_create (Mutter *compositor,
XCreateWindowEvent *event,
MetaWindow *window)
{
MetaScreen *screen;
Window xwindow = event->window;
MutterWindow *mw;
screen = meta_display_screen_for_root (compositor->display, event->parent);
if (screen == NULL)
return;
/*
* This is quite silly as we end up creating windows as then immediatly
* destroying them as they (likely) become framed and thus reparented.
*/
mw = find_window_for_screen (screen, xwindow);
if (!mw && window)
{
xwindow = meta_window_get_xwindow (window);
mw = find_window_for_screen (screen, xwindow);
}
if (mw)
{
destroy_win (mw, TRUE);
}
add_win (screen, window, event->window);
}
static void
process_reparent (Mutter *compositor,
XReparentEvent *event,
MetaWindow *window)
{
MetaScreen *screen;
MutterWindow *mw;
Window xwindow = event->window;
gboolean viewable = FALSE;
screen = meta_display_screen_for_root (compositor->display, event->parent);
if (!screen)
return;
mw = find_window_for_screen (screen, xwindow);
if (!mw && window)
{
xwindow = meta_window_get_xwindow (window);
mw = find_window_for_screen (screen, xwindow);
}
if (!mw && window)
{
xwindow = meta_window_get_xwindow (window);
mw = find_window_for_screen (screen, xwindow);
}
if (mw)
{
viewable = (mw->priv->attrs.map_state == IsViewable);
destroy_win (mw, TRUE);
}
add_win (screen, window, event->window);
}
static void
process_destroy (Mutter *compositor, XDestroyWindowEvent *event)
{
MutterWindow *cw =
find_window_in_display (compositor->display, event->window);
if (!cw)
return;
destroy_win (cw, FALSE);
}
static void
process_damage (Mutter *compositor,
XDamageNotifyEvent *event)
{
XEvent next;
Display *dpy = event->display;
Drawable drawable = event->drawable;
MutterWindowPrivate *priv;
MutterWindow *cw = find_window_in_display (compositor->display, drawable);
if (!cw)
return;
priv = cw->priv;
if (priv->destroy_pending ||
priv->maximize_in_progress ||
priv->unmaximize_in_progress)
{
priv->needs_repair = TRUE;
return;
}
/*
* Check if the event queue does not already contain DetstroyNotify for this
* window -- if it does, we need to stop updating the pixmap (to avoid damage
* notifications that come from the window teardown), and process the destroy
* immediately.
*/
if (XCheckTypedWindowEvent (dpy, drawable, DestroyNotify, &next))
{
priv->destroy_pending = TRUE;
destroy_win (cw, FALSE);
return;
}
repair_win (cw);
}
static void
update_shape (Mutter *compositor,
MutterWindow *cw)
{
MutterWindowPrivate *priv = cw->priv;
mutter_shaped_texture_clear_rectangles (MUTTER_SHAPED_TEXTURE (priv->actor));
#ifdef HAVE_SHAPE
if (priv->shaped)
{
Display *xdisplay = meta_display_get_xdisplay (compositor->display);
XRectangle *rects;
int n_rects, ordering;
rects = XShapeGetRectangles (xdisplay,
priv->xwindow,
ShapeBounding,
&n_rects,
&ordering);
if (rects)
{
mutter_shaped_texture_add_rectangles (MUTTER_SHAPED_TEXTURE (priv->actor),
n_rects, rects);
XFree (rects);
}
}
#endif
}
#ifdef HAVE_SHAPE
static void
process_shape (Mutter *compositor,
XShapeEvent *event)
{
MutterWindow *cw = find_window_in_display (compositor->display,
event->window);
MutterWindowPrivate *priv = cw->priv;
if (cw == NULL)
return;
if (event->kind == ShapeBounding)
{
priv->shaped = event->shaped;
update_shape (compositor, cw);
}
}
#endif
static void
process_configure_notify (Mutter *compositor,
XConfigureEvent *event)
{
MetaDisplay *display = compositor->display;
MutterWindow *cw;
/*
* We get each configure event twice; once through the WM solicitation of the
* events on the root window, and once through solicitation on the window
* itself -- we will only handle the latter, in which case the event and
* window members of the config event are identical.
*/
if (event->event != event->window)
return;
cw = find_window_in_display (display, event->window);
if (cw)
{
restack_win (cw, event->above);
resize_win (cw,
event->x, event->y, event->width, event->height,
event->border_width, event->override_redirect);
}
else
{
/*
* Check for root window geometry change
*/
GSList *l = meta_display_get_screens (display);
while (l)
{
MetaScreen *screen = l->data;
Window xroot = meta_screen_get_xroot (screen);
if (event->window == xroot)
{
gint width;
gint height;
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
meta_screen_get_size (screen, &width, &height);
clutter_actor_set_size (info->stage, width, height);
meta_verbose ("Changed size for stage on screen %d to %dx%d\n",
meta_screen_get_screen_number (screen),
width, height);
break;
}
l = l->next;
}
}
}
static void
process_circulate_notify (Mutter *compositor,
XCirculateEvent *event)
{
MutterWindow *cw = find_window_in_display (compositor->display,
event->window);
MutterWindow *top;
MetaCompScreen *info;
Window above;
MutterWindowPrivate *priv;
if (!cw)
return;
priv = cw->priv;
info = meta_screen_get_compositor_data (priv->screen);
top = info->windows->data;
if ((event->place == PlaceOnTop) && top)
above = top->priv->xwindow;
else
above = None;
restack_win (cw, above);
}
static void
process_unmap (Mutter *compositor,
XUnmapEvent *event)
{
MutterWindow *cw;
Window xwin = event->window;
Display *dpy = event->display;
if (event->from_configure)
{
/* Ignore unmap caused by parent's resize */
return;
}
cw = find_window_in_display (compositor->display, xwin);
if (cw)
{
XEvent next;
MutterWindowPrivate *priv = cw->priv;
if (priv->attrs.map_state == IsUnmapped || priv->destroy_pending)
return;
if (XCheckTypedWindowEvent (dpy, xwin, DestroyNotify, &next))
{
priv->destroy_pending = TRUE;
destroy_win (cw, FALSE);
return;
}
unmap_win (cw);
}
}
static void
process_map (Mutter *compositor,
XMapEvent *event,
MetaWindow *window)
{
MutterWindow *cw;
Window xwindow = event->window;
cw = find_window_in_display (compositor->display, xwindow);
if (cw)
{
map_win (cw);
}
}
static void
process_property_notify (Mutter *compositor,
XPropertyEvent *event)
{
MetaDisplay *display = compositor->display;
/* Check for the opacity changing */
if (event->atom == compositor->atom_net_wm_window_opacity)
{
MutterWindow *cw = find_window_in_display (display, event->window);
gulong value;
if (!cw)
{
/* Applications can set this for their toplevel windows, so
* this must be propagated to the window managed by the compositor
*/
cw = find_window_for_child_window_in_display (display,
event->window);
}
if (!cw)
return;
if (meta_prop_get_cardinal (display, event->window,
compositor->atom_net_wm_window_opacity,
&value) == FALSE)
{
guint8 opacity;
opacity = (guint8)((gfloat)value * 255.0 / ((gfloat)0xffffffff));
cw->priv->opacity = opacity;
clutter_actor_set_opacity (CLUTTER_ACTOR (cw), opacity);
}
return;
}
else if (event->atom == meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE))
{
MutterWindow *cw = find_window_in_display (display, event->window);
if (!cw)
return;
mutter_window_query_window_type (cw);
return;
}
}
static void
show_overlay_window (Display *xdisplay, Window xstage, Window xoverlay)
{
XserverRegion region;
region = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesSetWindowShapeRegion (xdisplay, xoverlay, ShapeBounding, 0, 0, 0);
XFixesSetWindowShapeRegion (xdisplay, xoverlay, ShapeInput, 0, 0, region);
XFixesSetWindowShapeRegion (xdisplay, xstage, ShapeInput, 0, 0, region);
XFixesDestroyRegion (xdisplay, region);
}
static Window
get_output_window (MetaScreen *screen)
{
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
Window output, xroot;
xroot = meta_screen_get_xroot (screen);
output = XCompositeGetOverlayWindow (xdisplay, xroot);
XSelectInput (xdisplay,
output,
FocusChangeMask |
ExposureMask |
PointerMotionMask |
PropertyChangeMask |
ButtonPressMask | ButtonReleaseMask |
KeyPressMask | KeyReleaseMask);
return output;
}
ClutterActor *
mutter_get_stage_for_screen (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
if (!info)
return NULL;
return info->stage;
}
ClutterActor *
mutter_get_overlay_group_for_screen (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
if (!info)
return NULL;
return info->overlay_group;
}
GList *
mutter_get_windows (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
if (!info)
return NULL;
return info->windows;
}
static void
clutter_cmp_manage_screen (MetaCompositor *compositor,
MetaScreen *screen)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MetaCompScreen *info;
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
int screen_number = meta_screen_get_screen_number (screen);
Window xroot = meta_screen_get_xroot (screen);
Window xwin;
gint width, height;
/* Check if the screen is already managed */
if (meta_screen_get_compositor_data (screen))
return;
meta_error_trap_push_with_return (display);
XCompositeRedirectSubwindows (xdisplay, xroot, CompositeRedirectManual);
XSync (xdisplay, FALSE);
if (meta_error_trap_pop_with_return (display, FALSE))
{
g_warning ("Another compositing manager is running on screen %i",
screen_number);
return;
}
info = g_new0 (MetaCompScreen, 1);
info->screen = screen;
meta_screen_set_compositor_data (screen, info);
info->output = get_output_window (screen);
info->windows = NULL;
info->windows_by_xid = g_hash_table_new (g_direct_hash, g_direct_equal);
info->focus_window = meta_display_get_focus_window (display);
XClearArea (xdisplay, info->output, 0, 0, 0, 0, TRUE);
meta_screen_set_cm_selection (screen);
info->stage = clutter_stage_get_default ();
meta_screen_get_size (screen, &width, &height);
clutter_actor_set_size (info->stage, width, height);
xwin = clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage));
XReparentWindow (xdisplay, xwin, info->output, 0, 0);
XSelectInput (xdisplay,
xwin,
FocusChangeMask |
ExposureMask |
PointerMotionMask |
PropertyChangeMask |
ButtonPressMask | ButtonReleaseMask |
KeyPressMask | KeyReleaseMask);
info->window_group = clutter_group_new ();
info->overlay_group = clutter_group_new ();
{
ClutterActor *foo;
foo = clutter_label_new_with_text ("Sans Bold 48px",
"Yessir. The compositor is running.");
clutter_actor_set_opacity (foo, 100);
clutter_actor_set_position (foo, 20, height - 50);
clutter_container_add_actor (CLUTTER_CONTAINER (info->overlay_group),
foo);
}
clutter_container_add (CLUTTER_CONTAINER (info->stage),
info->window_group,
info->overlay_group,
NULL);
/*
* Must do this *before* creating the plugin manager, in case any of the
* plugins need to adjust the screen shape regions.
*/
show_overlay_window (xdisplay, xwin, info->output);
info->plugin_mgr =
mutter_plugin_manager_new (screen);
clutter_actor_show_all (info->stage);
clutter_actor_show_all (info->overlay_group);
#endif
}
static void
clutter_cmp_unmanage_screen (MetaCompositor *compositor,
MetaScreen *screen)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
static void
clutter_cmp_add_window (MetaCompositor *compositor,
MetaWindow *window,
Window xwindow,
XWindowAttributes *attrs)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
Mutter *xrc = (Mutter *) compositor;
MetaScreen *screen = meta_screen_for_x_screen (attrs->screen);
meta_error_trap_push (xrc->display);
add_win (screen, window, xwindow);
meta_error_trap_pop (xrc->display, FALSE);
#endif
}
static void
clutter_cmp_remove_window (MetaCompositor *compositor,
Window xwindow)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
static void
clutter_cmp_set_updates (MetaCompositor *compositor,
MetaWindow *window,
gboolean update)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
static void
clutter_cmp_process_event (MetaCompositor *compositor,
XEvent *event,
MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
Mutter *xrc = (Mutter *) compositor;
if (window)
{
MetaCompScreen *info;
MetaScreen *screen;
screen = meta_window_get_screen (window);
info = meta_screen_get_compositor_data (screen);
if (mutter_plugin_manager_xevent_filter (info->plugin_mgr,
event) == TRUE)
return;
}
else
{
GSList *l;
Mutter *clc = (Mutter*)compositor;
l = meta_display_get_screens (clc->display);
while (l)
{
MetaScreen *screen = l->data;
MetaCompScreen *info;
info = meta_screen_get_compositor_data (screen);
if (mutter_plugin_manager_xevent_filter (info->plugin_mgr,
event) == TRUE)
{
return;
}
l = l->next;
}
}
/*
* This trap is so that none of the compositor functions cause
* X errors. This is really a hack, but I'm afraid I don't understand
* enough about Metacity/X to know how else you are supposed to do it
*/
meta_error_trap_push (xrc->display);
switch (event->type)
{
case CirculateNotify:
process_circulate_notify (xrc, (XCirculateEvent *) event);
break;
case ConfigureNotify:
process_configure_notify (xrc, (XConfigureEvent *) event);
break;
case PropertyNotify:
process_property_notify (xrc, (XPropertyEvent *) event);
break;
case Expose:
break;
case UnmapNotify:
process_unmap (xrc, (XUnmapEvent *) event);
break;
case MapNotify:
process_map (xrc, (XMapEvent *) event, window);
break;
case ReparentNotify:
process_reparent (xrc, (XReparentEvent *) event, window);
break;
case CreateNotify:
process_create (xrc, (XCreateWindowEvent *) event, window);
break;
case DestroyNotify:
process_destroy (xrc, (XDestroyWindowEvent *) event);
break;
default:
if (event->type == meta_display_get_damage_event_base (xrc->display) + XDamageNotify)
{
process_damage (xrc, (XDamageNotifyEvent *) event);
}
#ifdef HAVE_SHAPE
else if (event->type == meta_display_get_shape_event_base (xrc->display) + ShapeNotify)
process_shape (xrc, (XShapeEvent *) event);
#endif /* HAVE_SHAPE */
/* else
{
meta_error_trap_pop (xrc->display, FALSE);
return;
}
*/
break;
}
meta_error_trap_pop (xrc->display, FALSE);
#endif
}
static Pixmap
clutter_cmp_get_window_pixmap (MetaCompositor *compositor,
MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
return None;
#else
return None;
#endif
}
static void
clutter_cmp_set_active_window (MetaCompositor *compositor,
MetaScreen *screen,
MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
static void
clutter_cmp_destroy_window (MetaCompositor *compositor,
MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MutterWindow *cw = NULL;
MetaScreen *screen = meta_window_get_screen (window);
MetaFrame *f = meta_window_get_frame (window);
Window xwindow;
/* Chances are we actually get the window frame here */
xwindow = f ? meta_frame_get_xwindow (f) : meta_window_get_xwindow (window);
cw = find_window_for_screen (screen, xwindow);
if (!cw)
return;
destroy_win (cw, FALSE);
#endif
}
static void
clutter_cmp_minimize_window (MetaCompositor *compositor, MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MutterWindow *cw;
MetaCompScreen *info;
MetaScreen *screen;
MetaFrame *f = meta_window_get_frame (window);
screen = meta_window_get_screen (window);
info = meta_screen_get_compositor_data (screen);
/* Chances are we actually get the window frame here */
cw = find_window_for_screen (screen,
f ? meta_frame_get_xwindow (f) :
meta_window_get_xwindow (window));
if (!cw)
return;
/*
* If there is a plugin manager, try to run an effect; if no effect is
* executed, hide the actor.
*/
cw->priv->minimize_in_progress++;
if (!info->plugin_mgr ||
!mutter_plugin_manager_event_simple (info->plugin_mgr,
cw,
MUTTER_PLUGIN_MINIMIZE))
{
cw->priv->is_minimized = TRUE;
cw->priv->minimize_in_progress--;
}
#endif
}
static void
clutter_cmp_maximize_window (MetaCompositor *compositor, MetaWindow *window,
gint x, gint y, gint width, gint height)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MutterWindow *cw;
MetaCompScreen *info;
MetaScreen *screen;
MetaFrame *f = meta_window_get_frame (window);
screen = meta_window_get_screen (window);
info = meta_screen_get_compositor_data (screen);
/* Chances are we actually get the window frame here */
cw = find_window_for_screen (screen,
f ? meta_frame_get_xwindow (f) :
meta_window_get_xwindow (window));
if (!cw)
return;
cw->priv->maximize_in_progress++;
if (!info->plugin_mgr ||
!mutter_plugin_manager_event_maximize (info->plugin_mgr,
cw,
MUTTER_PLUGIN_MAXIMIZE,
x, y, width, height))
{
cw->priv->maximize_in_progress--;
}
#endif
}
static void
clutter_cmp_unmaximize_window (MetaCompositor *compositor, MetaWindow *window,
gint x, gint y, gint width, gint height)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MutterWindow *cw;
MetaCompScreen *info;
MetaScreen *screen;
MetaFrame *f = meta_window_get_frame (window);
screen = meta_window_get_screen (window);
info = meta_screen_get_compositor_data (screen);
/* Chances are we actually get the window frame here */
cw = find_window_for_screen (screen,
f ? meta_frame_get_xwindow (f) :
meta_window_get_xwindow (window));
if (!cw)
return;
cw->priv->unmaximize_in_progress++;
if (!info->plugin_mgr ||
!mutter_plugin_manager_event_maximize (info->plugin_mgr,
cw,
MUTTER_PLUGIN_UNMAXIMIZE,
x, y, width, height))
{
cw->priv->unmaximize_in_progress--;
}
#endif
}
static void
clutter_cmp_update_workspace_geometry (MetaCompositor *compositor,
MetaWorkspace *workspace)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MetaScreen *screen = meta_workspace_get_screen (workspace);
MetaCompScreen *info;
MutterPluginManager *mgr;
info = meta_screen_get_compositor_data (screen);
mgr = info->plugin_mgr;
if (!mgr || !workspace)
return;
mutter_plugin_manager_update_workspace (mgr, workspace);
#endif
}
static void
clutter_cmp_switch_workspace (MetaCompositor *compositor,
MetaScreen *screen,
MetaWorkspace *from,
MetaWorkspace *to,
MetaMotionDirection direction)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MetaCompScreen *info;
gint to_indx, from_indx;
info = meta_screen_get_compositor_data (screen);
to_indx = meta_workspace_index (to);
from_indx = meta_workspace_index (from);
if (!meta_prefs_get_live_hidden_windows ())
{
/*
* We are in the traditional mode where hidden windows get unmapped,
* we need to pre-calculate the map status of each window so that once
* the effect finishes we can put everything into proper order
* (we need to ignore the map notifications during the effect so that
* actors do not just disappear while the effect is running).
*/
GList *l = info->windows;
while (l)
{
MutterWindow *cw = l->data;
MetaWindow *mw = cw->priv->window;
gboolean sticky;
gint workspace = -1;
sticky = (!mw || meta_window_is_on_all_workspaces (mw));
if (!sticky)
{
MetaWorkspace *w;
w = meta_window_get_workspace (cw->priv->window);
workspace = meta_workspace_index (w);
/*
* If the window is not on the target workspace, mark it for
* unmap.
*/
if (to_indx != workspace)
{
cw->priv->needs_unmap = TRUE;
}
else
{
cw->priv->needs_map = TRUE;
cw->priv->needs_unmap = FALSE;
}
}
l = l->next;
}
}
info->switch_workspace_in_progress++;
if (!info->plugin_mgr ||
!mutter_plugin_manager_switch_workspace (info->plugin_mgr,
(const GList **)&info->windows,
from_indx,
to_indx,
direction))
{
info->switch_workspace_in_progress--;
/* We have to explicitely call this to fix up stacking order of the
* actors; this is because the abs stacking position of actors does not
* necessarily change during the window hiding/unhiding, only their
* relative position toward the destkop window.
*/
mutter_finish_workspace_switch (info);
}
#endif
}
static void
clutter_cmp_ensure_stack_order (MetaCompositor *compositor,
MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
GList *l = g_list_last (info->windows);
while (l)
{
ClutterActor *a = l->data;
MutterWindow *mw = l->data;
MetaWindow *window = mw->priv->window;
/*
* If this window is not marked as hidden, we raise it.
* If it has no MetaWindow associated (i.e., override redirect), we
* raise it too. Everything else we push to the bottom.
*/
if (!window || !meta_window_is_hidden (window))
{
clutter_actor_raise_top (a);
}
else
{
clutter_actor_lower_bottom (a);
}
l = l->prev;
}
}
static MetaCompositor comp_info = {
clutter_cmp_destroy,
clutter_cmp_manage_screen,
clutter_cmp_unmanage_screen,
clutter_cmp_add_window,
clutter_cmp_remove_window,
clutter_cmp_set_updates,
clutter_cmp_process_event,
clutter_cmp_get_window_pixmap,
clutter_cmp_set_active_window,
clutter_cmp_destroy_window,
clutter_cmp_minimize_window,
clutter_cmp_maximize_window,
clutter_cmp_unmaximize_window,
clutter_cmp_update_workspace_geometry,
clutter_cmp_switch_workspace,
clutter_cmp_ensure_stack_order,
};
MetaCompositor *
mutter_new (MetaDisplay *display)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
char *atom_names[] = {
"_XROOTPMAP_ID",
"_XSETROOT_ID",
"_NET_WM_WINDOW_OPACITY",
};
Atom atoms[G_N_ELEMENTS(atom_names)];
Mutter *clc;
MetaCompositor *compositor;
Display *xdisplay = meta_display_get_xdisplay (display);
guchar *data;
if (!composite_at_least_version (display, 0, 3))
return NULL;
clc = g_new0 (Mutter, 1);
clc->compositor = comp_info;
compositor = (MetaCompositor *) clc;
clc->display = display;
meta_verbose ("Creating %d atoms\n", (int) G_N_ELEMENTS (atom_names));
XInternAtoms (xdisplay, atom_names, G_N_ELEMENTS (atom_names),
False, atoms);
clc->atom_x_root_pixmap = atoms[0];
clc->atom_x_set_root = atoms[1];
clc->atom_net_wm_window_opacity = atoms[2];
/* Shadow setup */
data = shadow_gaussian_make_tile ();
clc->shadow_src = clutter_texture_new ();
clutter_texture_set_from_rgb_data (CLUTTER_TEXTURE (clc->shadow_src),
data,
TRUE,
TILE_WIDTH,
TILE_HEIGHT,
TILE_WIDTH*4,
4,
0,
NULL);
free (data);
return compositor;
#else
return NULL;
#endif
}
Window
mutter_get_overlay_window (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
return info->output;
}
/* ------------------------------- */
/* Shadow Generation */
typedef struct GaussianMap
{
int size;
double * data;
} GaussianMap;
static double
gaussian (double r, double x, double y)
{
return ((1 / (sqrt (2 * M_PI * r))) *
exp ((- (x * x + y * y)) / (2 * r * r)));
}
static GaussianMap *
make_gaussian_map (double r)
{
GaussianMap *c;
int size = ((int) ceil ((r * 3)) + 1) & ~1;
int center = size / 2;
int x, y;
double t = 0.0;
double g;
c = malloc (sizeof (GaussianMap) + size * size * sizeof (double));
c->size = size;
c->data = (double *) (c + 1);
for (y = 0; y < size; y++)
for (x = 0; x < size; x++)
{
g = gaussian (r, (double) (x - center), (double) (y - center));
t += g;
c->data[y * size + x] = g;
}
for (y = 0; y < size; y++)
for (x = 0; x < size; x++)
c->data[y*size + x] /= t;
return c;
}
static unsigned char
sum_gaussian (GaussianMap * map, double opacity,
int x, int y, int width, int height)
{
int fx, fy;
double * g_data;
double * g_line = map->data;
int g_size = map->size;
int center = g_size / 2;
int fx_start, fx_end;
int fy_start, fy_end;
double v;
unsigned int r;
/*
* Compute set of filter values which are "in range",
* that's the set with:
* 0 <= x + (fx-center) && x + (fx-center) < width &&
* 0 <= y + (fy-center) && y + (fy-center) < height
*
* 0 <= x + (fx - center) x + fx - center < width
* center - x <= fx fx < width + center - x
*/
fx_start = center - x;
if (fx_start < 0)
fx_start = 0;
fx_end = width + center - x;
if (fx_end > g_size)
fx_end = g_size;
fy_start = center - y;
if (fy_start < 0)
fy_start = 0;
fy_end = height + center - y;
if (fy_end > g_size)
fy_end = g_size;
g_line = g_line + fy_start * g_size + fx_start;
v = 0;
for (fy = fy_start; fy < fy_end; fy++)
{
g_data = g_line;
g_line += g_size;
for (fx = fx_start; fx < fx_end; fx++)
v += *g_data++;
}
if (v > 1)
v = 1;
v *= (opacity * 255.0);
r = (unsigned int) v;
return (unsigned char) r;
}
static unsigned char *
shadow_gaussian_make_tile ()
{
unsigned char * data;
int size;
int center;
int x, y;
unsigned char d;
int pwidth, pheight;
double opacity = SHADOW_OPACITY;
static GaussianMap * gaussian_map = NULL;
struct _mypixel
{
unsigned char r;
unsigned char g;
unsigned char b;
unsigned char a;
} * _d;
if (!gaussian_map)
gaussian_map =
make_gaussian_map (SHADOW_RADIUS);
size = gaussian_map->size;
center = size / 2;
/* Top & bottom */
pwidth = MAX_TILE_SZ;
pheight = MAX_TILE_SZ;
data = g_malloc0 (4 * TILE_WIDTH * TILE_HEIGHT);
_d = (struct _mypixel*) data;
/* N */
for (y = 0; y < pheight; y++)
{
d = sum_gaussian (gaussian_map, opacity,
center, y - center,
TILE_WIDTH, TILE_HEIGHT);
for (x = 0; x < pwidth; x++)
{
_d[y*3*pwidth + x + pwidth].r = 0;
_d[y*3*pwidth + x + pwidth].g = 0;
_d[y*3*pwidth + x + pwidth].b = 0;
_d[y*3*pwidth + x + pwidth].a = d;
}
}
/* S */
pwidth = MAX_TILE_SZ;
pheight = MAX_TILE_SZ;
for (y = 0; y < pheight; y++)
{
d = sum_gaussian (gaussian_map, opacity,
center, y - center,
TILE_WIDTH, TILE_HEIGHT);
for (x = 0; x < pwidth; x++)
{
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + x + pwidth].r = 0;
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + x + pwidth].g = 0;
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + x + pwidth].b = 0;
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + x + pwidth].a = d;
}
}
/* w */
pwidth = MAX_TILE_SZ;
pheight = MAX_TILE_SZ;
for (x = 0; x < pwidth; x++)
{
d = sum_gaussian (gaussian_map, opacity,
x - center, center,
TILE_WIDTH, TILE_HEIGHT);
for (y = 0; y < pheight; y++)
{
_d[y*3*pwidth + 3*pwidth*pheight + x].r = 0;
_d[y*3*pwidth + 3*pwidth*pheight + x].g = 0;
_d[y*3*pwidth + 3*pwidth*pheight + x].b = 0;
_d[y*3*pwidth + 3*pwidth*pheight + x].a = d;
}
}
/* E */
for (x = 0; x < pwidth; x++)
{
d = sum_gaussian (gaussian_map, opacity,
x - center, center,
TILE_WIDTH, TILE_HEIGHT);
for (y = 0; y < pheight; y++)
{
_d[y*3*pwidth + 3*pwidth*pheight + (pwidth-x-1) + 2*pwidth].r = 0;
_d[y*3*pwidth + 3*pwidth*pheight + (pwidth-x-1) + 2*pwidth].g = 0;
_d[y*3*pwidth + 3*pwidth*pheight + (pwidth-x-1) + 2*pwidth].b = 0;
_d[y*3*pwidth + 3*pwidth*pheight + (pwidth-x-1) + 2*pwidth].a = d;
}
}
/* NW */
pwidth = MAX_TILE_SZ;
pheight = MAX_TILE_SZ;
for (x = 0; x < pwidth; x++)
for (y = 0; y < pheight; y++)
{
d = sum_gaussian (gaussian_map, opacity,
x-center, y-center,
TILE_WIDTH, TILE_HEIGHT);
_d[y*3*pwidth + x].r = 0;
_d[y*3*pwidth + x].g = 0;
_d[y*3*pwidth + x].b = 0;
_d[y*3*pwidth + x].a = d;
}
/* SW */
for (x = 0; x < pwidth; x++)
for (y = 0; y < pheight; y++)
{
d = sum_gaussian (gaussian_map, opacity,
x-center, y-center,
TILE_WIDTH, TILE_HEIGHT);
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + x].r = 0;
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + x].g = 0;
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + x].b = 0;
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + x].a = d;
}
/* SE */
for (x = 0; x < pwidth; x++)
for (y = 0; y < pheight; y++)
{
d = sum_gaussian (gaussian_map, opacity,
x-center, y-center,
TILE_WIDTH, TILE_HEIGHT);
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + (pwidth-x-1) +
2*pwidth].r = 0;
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + (pwidth-x-1) +
2*pwidth].g = 0;
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + (pwidth-x-1) +
2*pwidth].b = 0;
_d[(pheight-y-1)*3*pwidth + 6*pwidth*pheight + (pwidth-x-1) +
2*pwidth].a = d;
}
/* NE */
for (x = 0; x < pwidth; x++)
for (y = 0; y < pheight; y++)
{
d = sum_gaussian (gaussian_map, opacity,
x-center, y-center,
TILE_WIDTH, TILE_HEIGHT);
_d[y*3*pwidth + (pwidth - x - 1) + 2*pwidth].r = 0;
_d[y*3*pwidth + (pwidth - x - 1) + 2*pwidth].g = 0;
_d[y*3*pwidth + (pwidth - x - 1) + 2*pwidth].b = 0;
_d[y*3*pwidth + (pwidth - x - 1) + 2*pwidth].a = d;
}
/* center */
pwidth = MAX_TILE_SZ;
pheight = MAX_TILE_SZ;
d = sum_gaussian (gaussian_map, opacity,
center, center, TILE_WIDTH, TILE_HEIGHT);
for (x = 0; x < pwidth; x++)
for (y = 0; y < pheight; y++)
{
_d[y*3*pwidth + 3*pwidth*pheight + x + pwidth].r = 0;
_d[y*3*pwidth + 3*pwidth*pheight + x + pwidth].g = 0;
_d[y*3*pwidth + 3*pwidth*pheight + x + pwidth].b = 0;
_d[y*3*pwidth + 3*pwidth*pheight + x + pwidth].a = 0;
}
return data;
}
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