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mutter/src/compositor/meta-window-actor.c
Jasper St. Pierre 98dbba1e17 window-actor: Remove meta-screen property 
This can be inferred from the window. Don't allow anybody to set it.

https://bugzilla.gnome.org/show_bug.cgi?id=678989
2013-12-09 14:05:18 -05:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/**
* SECTION:meta-window-actor
* @title: MetaWindowActor
* @short_description: An actor representing a top-level window in the scene graph
*/
#include <config.h>
#include <math.h>
#include <X11/extensions/Xcomposite.h>
#include <X11/extensions/Xdamage.h>
#include <X11/extensions/Xrender.h>
#include <clutter/x11/clutter-x11.h>
#include <cogl/cogl-texture-pixmap-x11.h>
#include <gdk/gdk.h> /* for gdk_rectangle_union() */
#include <string.h>
#include <meta/display.h>
#include <meta/errors.h>
#include "frame.h"
#include <meta/window.h>
#include <meta/meta-shaped-texture.h>
#include "xprops.h"
#include "compositor-private.h"
#include "meta-shaped-texture-private.h"
#include "meta-shadow-factory-private.h"
#include "meta-window-actor-private.h"
#include "meta-surface-actor.h"
#include "meta-texture-rectangle.h"
#include "region-utils.h"
#include "meta-wayland-private.h"
#include "monitor-private.h"
#include "meta-cullable.h"
enum {
POSITION_CHANGED,
SIZE_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = {0};
struct _MetaWindowActorPrivate
{
MetaWindow *window;
MetaScreen *screen;
MetaSurfaceActor *surface;
/* MetaShadowFactory only caches shadows that are actually in use;
* to avoid unnecessary recomputation we do two things: 1) we store
* both a focused and unfocused shadow for the window. If the window
* doesn't have different focused and unfocused shadow parameters,
* these will be the same. 2) when the shadow potentially changes we
* don't immediately unreference the old shadow, we just flag it as
* dirty and recompute it when we next need it (recompute_focused_shadow,
* recompute_unfocused_shadow.) Because of our extraction of
* size-invariant window shape, we'll often find that the new shadow
* is the same as the old shadow.
*/
MetaShadow *focused_shadow;
MetaShadow *unfocused_shadow;
guint8 opacity;
/* A region that matches the shape of the window, including frame bounds */
cairo_region_t *shape_region;
/* The region we should clip to when painting the shadow */
cairo_region_t *shadow_clip;
/* The region that is visible, used to optimize out redraws */
cairo_region_t *unobscured_region;
guint send_frame_messages_timer;
gint64 frame_drawn_time;
/* Extracted size-invariant shape used for shadows */
MetaWindowShape *shadow_shape;
gint last_width;
gint last_height;
gint freeze_count;
char * shadow_class;
/*
* 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;
/* List of FrameData for recent frames */
GList *frames;
Pixmap back_pixmap; /* Not used in wayland compositor mode */
Damage damage; /* Not used in wayland compositor mode */
guint visible : 1;
guint mapped : 1;
guint argb32 : 1;
guint disposed : 1;
guint redecorating : 1;
/* If set, the client needs to be sent a _NET_WM_FRAME_DRAWN
* client message using the most recent frame in ->frames */
guint needs_frame_drawn : 1;
guint repaint_scheduled : 1;
guint needs_reshape : 1;
guint recompute_focused_shadow : 1;
guint recompute_unfocused_shadow : 1;
guint needs_destroy : 1;
guint no_shadow : 1;
/*
* None of these are used in wayland compositor mode...
*/
guint needs_damage_all : 1;
guint received_x11_damage : 1;
guint needs_pixmap : 1;
guint x11_size_changed : 1;
guint updates_frozen : 1;
guint unredirected : 1;
/* This is used to detect fullscreen windows that need to be unredirected */
guint full_damage_frames_count;
guint does_full_damage : 1;
};
typedef struct _FrameData FrameData;
struct _FrameData
{
int64_t frame_counter;
guint64 sync_request_serial;
gint64 frame_drawn_time;
};
enum
{
PROP_META_WINDOW = 1,
PROP_NO_SHADOW,
PROP_SHADOW_CLASS
};
static void meta_window_actor_dispose (GObject *object);
static void meta_window_actor_finalize (GObject *object);
static void meta_window_actor_constructed (GObject *object);
static void meta_window_actor_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void meta_window_actor_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void meta_window_actor_paint (ClutterActor *actor);
static gboolean meta_window_actor_get_paint_volume (ClutterActor *actor,
ClutterPaintVolume *volume);
static void meta_window_actor_detach_x11_pixmap (MetaWindowActor *self);
static gboolean meta_window_actor_has_shadow (MetaWindowActor *self);
static void meta_window_actor_handle_updates (MetaWindowActor *self);
static void check_needs_reshape (MetaWindowActor *self);
static void do_send_frame_drawn (MetaWindowActor *self, FrameData *frame);
static void do_send_frame_timings (MetaWindowActor *self,
FrameData *frame,
gint refresh_interval,
gint64 presentation_time);
static void cullable_iface_init (MetaCullableInterface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaWindowActor, meta_window_actor, CLUTTER_TYPE_ACTOR,
G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init));
static void
frame_data_free (FrameData *frame)
{
g_slice_free (FrameData, frame);
}
static void
meta_window_actor_class_init (MetaWindowActorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
GParamSpec *pspec;
g_type_class_add_private (klass, sizeof (MetaWindowActorPrivate));
object_class->dispose = meta_window_actor_dispose;
object_class->finalize = meta_window_actor_finalize;
object_class->set_property = meta_window_actor_set_property;
object_class->get_property = meta_window_actor_get_property;
object_class->constructed = meta_window_actor_constructed;
actor_class->paint = meta_window_actor_paint;
actor_class->get_paint_volume = meta_window_actor_get_paint_volume;
pspec = g_param_spec_object ("meta-window",
"MetaWindow",
"The displayed MetaWindow",
META_TYPE_WINDOW,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class,
PROP_META_WINDOW,
pspec);
pspec = g_param_spec_boolean ("no-shadow",
"No shadow",
"Do not add shaddow to this window",
FALSE,
G_PARAM_READWRITE);
g_object_class_install_property (object_class,
PROP_NO_SHADOW,
pspec);
pspec = g_param_spec_string ("shadow-class",
"Name of the shadow class for this window.",
"NULL means to use the default shadow class for this window type",
NULL,
G_PARAM_READWRITE);
g_object_class_install_property (object_class,
PROP_SHADOW_CLASS,
pspec);
signals[POSITION_CHANGED] =
g_signal_new ("position-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE, 0);
signals[SIZE_CHANGED] =
g_signal_new ("size-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE, 0);
}
static void
meta_window_actor_init (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv;
priv = self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
META_TYPE_WINDOW_ACTOR,
MetaWindowActorPrivate);
priv->opacity = 0xff;
priv->shadow_class = NULL;
}
static void
window_decorated_notify (MetaWindow *mw,
GParamSpec *arg1,
gpointer data)
{
MetaWindowActor *self = META_WINDOW_ACTOR (data);
MetaWindowActorPrivate *priv = self->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
/*
* Basically, we have to reconstruct the the internals of this object
* from scratch, as everything has changed.
*/
priv->redecorating = TRUE;
if (!meta_is_wayland_compositor ())
{
meta_window_actor_detach_x11_pixmap (self);
/*
* First of all, clean up any resources we are currently using and will
* be replacing.
*/
if (priv->damage != None)
{
meta_error_trap_push (display);
XDamageDestroy (xdisplay, priv->damage);
meta_error_trap_pop (display);
priv->damage = None;
}
}
/*
* Recreate the contents.
*/
meta_window_actor_constructed (G_OBJECT (self));
}
static void
window_appears_focused_notify (MetaWindow *mw,
GParamSpec *arg1,
gpointer data)
{
clutter_actor_queue_redraw (CLUTTER_ACTOR (data));
}
static void
surface_allocation_changed_notify (ClutterActor *actor,
const ClutterActorBox *allocation,
ClutterAllocationFlags flags,
MetaWindowActor *self)
{
meta_window_actor_sync_actor_geometry (self, FALSE);
meta_window_actor_update_shape (self);
g_signal_emit (self, signals[SIZE_CHANGED], 0);
}
static void
meta_window_actor_constructed (GObject *object)
{
MetaWindowActor *self = META_WINDOW_ACTOR (object);
MetaWindowActorPrivate *priv = self->priv;
MetaWindow *window = priv->window;
Window xwindow = meta_window_get_toplevel_xwindow (window);
MetaScreen *screen = meta_window_get_screen (window);
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
priv->screen = screen;
if (!meta_is_wayland_compositor ())
priv->damage = XDamageCreate (xdisplay, xwindow,
XDamageReportBoundingBox);
if (window->client_type == META_WINDOW_CLIENT_TYPE_X11)
{
XRenderPictFormat *format;
format = XRenderFindVisualFormat (xdisplay, window->xvisual);
if (format && format->type == PictTypeDirect && format->direct.alphaMask)
priv->argb32 = TRUE;
}
else
{
/* XXX: parse shm formats to determine argb32 */
priv->argb32 = TRUE;
}
if (!priv->surface)
{
if (window->surface)
priv->surface = window->surface->surface_actor;
else
priv->surface = meta_surface_actor_new ();
g_object_ref_sink (priv->surface);
clutter_actor_add_child (CLUTTER_ACTOR (self), CLUTTER_ACTOR (priv->surface));
g_signal_connect_object (priv->surface, "allocation-changed",
G_CALLBACK (surface_allocation_changed_notify), self, 0);
meta_window_actor_update_shape (self);
g_signal_connect_object (window, "notify::decorated",
G_CALLBACK (window_decorated_notify), self, 0);
g_signal_connect_object (window, "notify::appears-focused",
G_CALLBACK (window_appears_focused_notify), self, 0);
}
else
{
/*
* This is the case where existing window is gaining/loosing frame.
* Just ensure the actor is top most (i.e., above shadow).
*/
clutter_actor_set_child_above_sibling (CLUTTER_ACTOR (self), CLUTTER_ACTOR (priv->surface), NULL);
}
meta_window_actor_update_opacity (self);
/* Start off with an empty shape region to maintain the invariant
* that it's always set */
priv->shape_region = cairo_region_create ();
}
static void
meta_window_actor_dispose (GObject *object)
{
MetaWindowActor *self = META_WINDOW_ACTOR (object);
MetaWindowActorPrivate *priv = self->priv;
MetaScreen *screen;
MetaDisplay *display;
Display *xdisplay;
MetaCompScreen *info;
if (priv->disposed)
return;
priv->disposed = TRUE;
screen = priv->screen;
info = meta_screen_get_compositor_data (screen);
if (!meta_is_wayland_compositor ())
meta_window_actor_detach_x11_pixmap (self);
if (priv->send_frame_messages_timer != 0)
{
g_source_remove (priv->send_frame_messages_timer);
priv->send_frame_messages_timer = 0;
}
g_clear_pointer (&priv->unobscured_region, cairo_region_destroy);
g_clear_pointer (&priv->shape_region, cairo_region_destroy);
g_clear_pointer (&priv->shadow_clip, cairo_region_destroy);
g_clear_pointer (&priv->shadow_class, g_free);
g_clear_pointer (&priv->focused_shadow, meta_shadow_unref);
g_clear_pointer (&priv->unfocused_shadow, meta_shadow_unref);
g_clear_pointer (&priv->shadow_shape, meta_window_shape_unref);
if (!meta_is_wayland_compositor () && priv->damage != None)
{
display = meta_screen_get_display (screen);
xdisplay = meta_display_get_xdisplay (display);
meta_error_trap_push (display);
XDamageDestroy (xdisplay, priv->damage);
meta_error_trap_pop (display);
priv->damage = None;
}
info->windows = g_list_remove (info->windows, (gconstpointer) self);
g_clear_object (&priv->window);
/*
* Release the extra reference we took on the actor.
*/
g_clear_object (&priv->surface);
G_OBJECT_CLASS (meta_window_actor_parent_class)->dispose (object);
}
static void
meta_window_actor_finalize (GObject *object)
{
MetaWindowActor *self = META_WINDOW_ACTOR (object);
MetaWindowActorPrivate *priv = self->priv;
g_list_free_full (priv->frames, (GDestroyNotify) frame_data_free);
G_OBJECT_CLASS (meta_window_actor_parent_class)->finalize (object);
}
static void
meta_window_actor_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaWindowActor *self = META_WINDOW_ACTOR (object);
MetaWindowActorPrivate *priv = self->priv;
switch (prop_id)
{
case PROP_META_WINDOW:
{
if (priv->window)
g_object_unref (priv->window);
priv->window = g_value_dup_object (value);
}
break;
case PROP_NO_SHADOW:
{
gboolean newv = g_value_get_boolean (value);
if (newv == priv->no_shadow)
return;
priv->no_shadow = newv;
meta_window_actor_invalidate_shadow (self);
}
break;
case PROP_SHADOW_CLASS:
{
const char *newv = g_value_get_string (value);
if (g_strcmp0 (newv, priv->shadow_class) == 0)
return;
g_free (priv->shadow_class);
priv->shadow_class = g_strdup (newv);
meta_window_actor_invalidate_shadow (self);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_window_actor_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaWindowActorPrivate *priv = META_WINDOW_ACTOR (object)->priv;
switch (prop_id)
{
case PROP_META_WINDOW:
g_value_set_object (value, priv->window);
break;
case PROP_NO_SHADOW:
g_value_set_boolean (value, priv->no_shadow);
break;
case PROP_SHADOW_CLASS:
g_value_set_string (value, priv->shadow_class);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static const char *
meta_window_actor_get_shadow_class (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
if (priv->shadow_class != NULL)
return priv->shadow_class;
else
{
MetaWindowType window_type = meta_window_get_window_type (priv->window);
switch (window_type)
{
case META_WINDOW_DROPDOWN_MENU:
return "dropdown-menu";
case META_WINDOW_POPUP_MENU:
return "popup-menu";
default:
{
MetaFrameType frame_type = meta_window_get_frame_type (priv->window);
return meta_frame_type_to_string (frame_type);
}
}
}
}
static void
meta_window_actor_get_shadow_params (MetaWindowActor *self,
gboolean appears_focused,
MetaShadowParams *params)
{
const char *shadow_class = meta_window_actor_get_shadow_class (self);
meta_shadow_factory_get_params (meta_shadow_factory_get_default (),
shadow_class, appears_focused,
params);
}
void
meta_window_actor_get_shape_bounds (MetaWindowActor *self,
cairo_rectangle_int_t *bounds)
{
MetaWindowActorPrivate *priv = self->priv;
cairo_region_get_extents (priv->shape_region, bounds);
}
static void
meta_window_actor_get_shadow_bounds (MetaWindowActor *self,
gboolean appears_focused,
cairo_rectangle_int_t *bounds)
{
MetaWindowActorPrivate *priv = self->priv;
MetaShadow *shadow = appears_focused ? priv->focused_shadow : priv->unfocused_shadow;
cairo_rectangle_int_t shape_bounds;
MetaShadowParams params;
meta_window_actor_get_shape_bounds (self, &shape_bounds);
meta_window_actor_get_shadow_params (self, appears_focused, &params);
meta_shadow_get_bounds (shadow,
params.x_offset + shape_bounds.x,
params.y_offset + shape_bounds.y,
shape_bounds.width,
shape_bounds.height,
bounds);
}
/* If we have an ARGB32 window that we decorate with a frame, it's
* probably something like a translucent terminal - something where
* the alpha channel represents transparency rather than a shape. We
* don't want to show the shadow through the translucent areas since
* the shadow is wrong for translucent windows (it should be
* translucent itself and colored), and not only that, will /look/
* horribly wrong - a misplaced big black blob. As a hack, what we
* want to do is just draw the shadow as normal outside the frame, and
* inside the frame draw no shadow. This is also not even close to
* the right result, but looks OK. We also apply this approach to
* windows set to be partially translucent with _NET_WM_WINDOW_OPACITY.
*/
static gboolean
clip_shadow_under_window (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
return (priv->argb32 || priv->opacity != 0xff) && priv->window->frame;
}
static void
meta_window_actor_paint (ClutterActor *actor)
{
MetaWindowActor *self = META_WINDOW_ACTOR (actor);
MetaWindowActorPrivate *priv = self->priv;
gboolean appears_focused = meta_window_appears_focused (priv->window);
MetaShadow *shadow = appears_focused ? priv->focused_shadow : priv->unfocused_shadow;
/* This window got damage when obscured; we set up a timer
* to send frame completion events, but since we're drawing
* the window now (for some other reason) cancel the timer
* and send the completion events normally */
if (priv->send_frame_messages_timer != 0)
{
g_source_remove (priv->send_frame_messages_timer);
priv->send_frame_messages_timer = 0;
}
if (shadow != NULL)
{
MetaShadowParams params;
cairo_rectangle_int_t shape_bounds;
cairo_region_t *clip = priv->shadow_clip;
meta_window_actor_get_shape_bounds (self, &shape_bounds);
meta_window_actor_get_shadow_params (self, appears_focused, &params);
/* The frame bounds are already subtracted from priv->shadow_clip
* if that exists.
*/
if (!clip && clip_shadow_under_window (self))
{
cairo_region_t *frame_bounds = meta_window_get_frame_bounds (priv->window);
cairo_rectangle_int_t bounds;
meta_window_actor_get_shadow_bounds (self, appears_focused, &bounds);
clip = cairo_region_create_rectangle (&bounds);
cairo_region_subtract (clip, frame_bounds);
}
meta_shadow_paint (shadow,
params.x_offset + shape_bounds.x,
params.y_offset + shape_bounds.y,
shape_bounds.width,
shape_bounds.height,
(clutter_actor_get_paint_opacity (actor) * params.opacity * priv->opacity) / (255 * 255),
clip,
clip_shadow_under_window (self)); /* clip_strictly - not just as an optimization */
if (clip && clip != priv->shadow_clip)
cairo_region_destroy (clip);
}
CLUTTER_ACTOR_CLASS (meta_window_actor_parent_class)->paint (actor);
}
static gboolean
meta_window_actor_get_paint_volume (ClutterActor *actor,
ClutterPaintVolume *volume)
{
MetaWindowActor *self = META_WINDOW_ACTOR (actor);
MetaWindowActorPrivate *priv = self->priv;
cairo_rectangle_int_t bounds;
gboolean appears_focused = meta_window_appears_focused (priv->window);
ClutterVertex origin;
/* The paint volume is computed before paint functions are called
* so our bounds might not be updated yet. Force an update. */
meta_window_actor_handle_updates (self);
meta_window_actor_get_shape_bounds (self, &bounds);
if (appears_focused ? priv->focused_shadow : priv->unfocused_shadow)
{
cairo_rectangle_int_t shadow_bounds;
/* We could compute an full clip region as we do for the window
* texture, but the shadow is relatively cheap to draw, and
* a little more complex to clip, so we just catch the case where
* the shadow is completely obscured and doesn't need to be drawn
* at all.
*/
meta_window_actor_get_shadow_bounds (self, appears_focused, &shadow_bounds);
gdk_rectangle_union (&bounds, &shadow_bounds, &bounds);
}
if (priv->unobscured_region)
cairo_region_intersect_rectangle (priv->unobscured_region, &bounds);
origin.x = bounds.x;
origin.y = bounds.y;
origin.z = 0.0f;
clutter_paint_volume_set_origin (volume, &origin);
clutter_paint_volume_set_width (volume, bounds.width);
clutter_paint_volume_set_height (volume, bounds.height);
return TRUE;
}
static gboolean
meta_window_actor_has_shadow (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
MetaWindowType window_type = meta_window_get_window_type (priv->window);
if (priv->no_shadow)
return FALSE;
/* Leaving out shadows for maximized and fullscreen windows is an effeciency
* win and also prevents the unsightly effect of the shadow of maximized
* window appearing on an adjacent window */
if ((meta_window_get_maximized (priv->window) == (META_MAXIMIZE_HORIZONTAL | META_MAXIMIZE_VERTICAL)) ||
meta_window_is_fullscreen (priv->window))
return FALSE;
/*
* If we have two snap-tiled windows, we don't want the shadow to obstruct
* the other window.
*/
if (meta_window_get_tile_match (priv->window))
return FALSE;
/*
* Always put a shadow around windows with a frame - This should override
* the restriction about not putting a shadow around ARGB windows.
*/
if (meta_window_get_frame (priv->window))
return TRUE;
/*
* Do not add shadows to ARGB windows; eventually we should generate a
* shadow from the input shape for such windows.
*/
if (priv->argb32 || priv->opacity != 0xff)
return FALSE;
/*
* Add shadows to override redirect windows (e.g., Gtk menus).
*/
if (priv->window->override_redirect)
return TRUE;
/*
* Don't put shadow around DND icon windows
*/
if (window_type == META_WINDOW_DND ||
window_type == META_WINDOW_DESKTOP)
return FALSE;
if (window_type == META_WINDOW_MENU
#if 0
|| window_type == META_WINDOW_DROPDOWN_MENU
#endif
)
return TRUE;
#if 0
if (window_type == META_WINDOW_TOOLTIP)
return TRUE;
#endif
return FALSE;
}
/**
* meta_window_actor_get_meta_window:
* @self: a #MetaWindowActor
*
* Gets the #MetaWindow object that the the #MetaWindowActor is displaying
*
* Return value: (transfer none): the displayed #MetaWindow
*/
MetaWindow *
meta_window_actor_get_meta_window (MetaWindowActor *self)
{
return self->priv->window;
}
/**
* meta_window_actor_get_texture:
* @self: a #MetaWindowActor
*
* Gets the ClutterActor that is used to display the contents of the window
*
* Return value: (transfer none): the #ClutterActor for the contents
*/
ClutterActor *
meta_window_actor_get_texture (MetaWindowActor *self)
{
return CLUTTER_ACTOR (meta_surface_actor_get_texture (self->priv->surface));
}
/**
* meta_window_actor_get_surface:
* @self: a #MetaWindowActor
*
* Gets the MetaSurfaceActor that draws the content of this window
*
* Return value: (transfer none): the #MetaSurfaceActor for the contents
*/
MetaSurfaceActor *
meta_window_actor_get_surface (MetaWindowActor *self)
{
return self->priv->surface;
}
/**
* meta_window_actor_is_destroyed:
* @self: a #MetaWindowActor
*
* Gets whether the X window that the actor was displaying has been destroyed
*
* Return value: %TRUE when the window is destroyed, otherwise %FALSE
*/
gboolean
meta_window_actor_is_destroyed (MetaWindowActor *self)
{
return self->priv->disposed;
}
gboolean
meta_window_actor_is_override_redirect (MetaWindowActor *self)
{
return meta_window_is_override_redirect (self->priv->window);
}
/**
* meta_window_actor_get_workspace:
* @self: #MetaWindowActor
*
* Returns the index of workspace on which this window is located; if the
* window is sticky, or is not currently located on any workspace, returns -1.
* This function is deprecated and should not be used in newly written code;
* meta_window_get_workspace() instead.
*
* Return value: (transfer none): index of workspace on which this window is
* located.
*/
gint
meta_window_actor_get_workspace (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv;
MetaWorkspace *workspace;
if (!self)
return -1;
priv = self->priv;
if (!priv->window || meta_window_is_on_all_workspaces (priv->window))
return -1;
workspace = meta_window_get_workspace (priv->window);
if (!workspace)
return -1;
return meta_workspace_index (workspace);
}
gboolean
meta_window_actor_showing_on_its_workspace (MetaWindowActor *self)
{
if (!self)
return FALSE;
/* If override redirect: */
if (!self->priv->window)
return TRUE;
return meta_window_showing_on_its_workspace (self->priv->window);
}
static void
meta_window_actor_freeze (MetaWindowActor *self)
{
if (!meta_is_wayland_compositor ())
self->priv->freeze_count++;
}
static gboolean
send_frame_messages_timeout (gpointer data)
{
MetaWindowActor *self = (MetaWindowActor *) data;
MetaWindowActorPrivate *priv = self->priv;
FrameData *frame = g_slice_new0 (FrameData);
frame->sync_request_serial = priv->window->sync_request_serial;
do_send_frame_drawn (self, frame);
do_send_frame_timings (self, frame, 0, 0);
priv->needs_frame_drawn = FALSE;
priv->send_frame_messages_timer = 0;
frame_data_free (frame);
return FALSE;
}
static void
queue_send_frame_messages_timeout (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
gint64 current_time = meta_compositor_monotonic_time_to_server_time (display, g_get_monotonic_time ());
MetaMonitorManager *monitor_manager = meta_monitor_manager_get ();
MetaWindow *window = priv->window;
MetaOutput *outputs;
guint n_outputs, i;
float refresh_rate = 60.0f;
gint interval, offset;
outputs = meta_monitor_manager_get_outputs (monitor_manager, &n_outputs);
for (i = 0; i < n_outputs; i++)
{
if (outputs[i].output_id == window->monitor->output_id && outputs[i].crtc)
{
refresh_rate = outputs[i].crtc->current_mode->refresh_rate;
break;
}
}
interval = (int)(1000000 / refresh_rate) * 6;
offset = MAX (0, priv->frame_drawn_time + interval - current_time) / 1000;
/* The clutter master clock source has already been added with META_PRIORITY_REDRAW,
* so the timer will run *after* the clutter frame handling, if a frame is ready
* to be drawn when the timer expires.
*/
priv->send_frame_messages_timer = g_timeout_add_full (META_PRIORITY_REDRAW, offset, send_frame_messages_timeout, self, NULL);
}
static void
meta_window_actor_damage_all (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
cairo_region_t *unobscured_region;
gboolean redraw_queued;
if (!priv->needs_damage_all)
return;
if (!priv->mapped || priv->needs_pixmap)
return;
unobscured_region =
clutter_actor_has_mapped_clones (CLUTTER_ACTOR (priv->surface))
? NULL : priv->unobscured_region;
redraw_queued = meta_surface_actor_damage_all (priv->surface, unobscured_region);
priv->repaint_scheduled = priv->repaint_scheduled || redraw_queued;
priv->needs_damage_all = FALSE;
}
static void
meta_window_actor_thaw (MetaWindowActor *self)
{
if (!meta_is_wayland_compositor ())
{
self->priv->freeze_count--;
if (G_UNLIKELY (self->priv->freeze_count < 0))
{
g_warning ("Error in freeze/thaw accounting.");
self->priv->freeze_count = 0;
return;
}
if (self->priv->freeze_count)
return;
/* We sometimes ignore moves and resizes on frozen windows */
meta_window_actor_sync_actor_geometry (self, FALSE);
/* We do this now since we might be going right back into the
* frozen state */
meta_window_actor_handle_updates (self);
/* Since we ignore damage events while a window is frozen for certain effects
* we may need to issue an update_area() covering the whole pixmap if we
* don't know what real damage has happened. */
if (self->priv->needs_damage_all)
meta_window_actor_damage_all (self);
}
}
void
meta_window_actor_queue_frame_drawn (MetaWindowActor *self,
gboolean no_delay_frame)
{
MetaWindowActorPrivate *priv = self->priv;
FrameData *frame = g_slice_new0 (FrameData);
priv->needs_frame_drawn = TRUE;
frame->sync_request_serial = priv->window->sync_request_serial;
priv->frames = g_list_prepend (priv->frames, frame);
if (no_delay_frame)
{
ClutterActor *stage = clutter_actor_get_stage (CLUTTER_ACTOR (self));
clutter_stage_skip_sync_delay (CLUTTER_STAGE (stage));
}
if (!priv->repaint_scheduled)
{
gboolean is_obscured = FALSE;
/* Find out whether the window is completly obscured */
if (priv->unobscured_region)
{
cairo_region_t *unobscured_window_region;
unobscured_window_region = cairo_region_copy (priv->shape_region);
cairo_region_intersect (unobscured_window_region, priv->unobscured_region);
is_obscured = cairo_region_is_empty (unobscured_window_region);
cairo_region_destroy (unobscured_window_region);
}
/* A frame was marked by the client without actually doing any
* damage or any unobscured, or while we had the window frozen
* (e.g. during an interactive resize.) We need to make sure that the
* pre_paint/post_paint functions get called, enabling us to
* send a _NET_WM_FRAME_DRAWN. We do a 1-pixel redraw to get
* consistent timing with non-empty frames. If the window
* is completely obscured we fire off the send_frame_messages timeout.
*/
if (is_obscured)
{
queue_send_frame_messages_timeout (self);
}
else if (priv->mapped && (!meta_is_wayland_compositor () || !priv->needs_pixmap))
{
const cairo_rectangle_int_t clip = { 0, 0, 1, 1 };
clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (priv->surface), &clip);
priv->repaint_scheduled = TRUE;
}
}
}
gboolean
meta_window_actor_effect_in_progress (MetaWindowActor *self)
{
return (self->priv->minimize_in_progress ||
self->priv->maximize_in_progress ||
self->priv->unmaximize_in_progress ||
self->priv->map_in_progress ||
self->priv->destroy_in_progress);
}
static gboolean
is_frozen (MetaWindowActor *self)
{
return self->priv->freeze_count ? TRUE : FALSE;
}
static void
meta_window_actor_queue_create_x11_pixmap (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
priv->needs_pixmap = TRUE;
if (!priv->mapped)
return;
if (is_frozen (self))
return;
/* This will cause the compositor paint function to be run
* if the actor is visible or a clone of the actor is visible.
* if the actor isn't visible in any way, then we don't
* need to repair the window anyways, and can wait until
* the stage is redrawn for some other reason
*
* The compositor paint function repairs all windows.
*/
clutter_actor_queue_redraw (CLUTTER_ACTOR (priv->surface));
}
static gboolean
is_freeze_thaw_effect (gulong event)
{
switch (event)
{
case META_PLUGIN_DESTROY:
case META_PLUGIN_MAXIMIZE:
case META_PLUGIN_UNMAXIMIZE:
return TRUE;
break;
default:
return FALSE;
}
}
static gboolean
start_simple_effect (MetaWindowActor *self,
gulong event)
{
MetaWindowActorPrivate *priv = self->priv;
MetaCompScreen *info = meta_screen_get_compositor_data (priv->screen);
gint *counter = NULL;
gboolean use_freeze_thaw = FALSE;
if (!info->plugin_mgr)
return FALSE;
switch (event)
{
case META_PLUGIN_MINIMIZE:
counter = &priv->minimize_in_progress;
break;
case META_PLUGIN_MAP:
counter = &priv->map_in_progress;
break;
case META_PLUGIN_DESTROY:
counter = &priv->destroy_in_progress;
break;
case META_PLUGIN_UNMAXIMIZE:
case META_PLUGIN_MAXIMIZE:
case META_PLUGIN_SWITCH_WORKSPACE:
g_assert_not_reached ();
break;
}
g_assert (counter);
use_freeze_thaw = is_freeze_thaw_effect (event);
if (use_freeze_thaw)
meta_window_actor_freeze (self);
(*counter)++;
if (!meta_plugin_manager_event_simple (info->plugin_mgr,
self,
event))
{
(*counter)--;
if (use_freeze_thaw)
meta_window_actor_thaw (self);
return FALSE;
}
return TRUE;
}
static void
meta_window_actor_after_effects (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
if (priv->needs_destroy)
{
clutter_actor_destroy (CLUTTER_ACTOR (self));
return;
}
meta_window_actor_sync_visibility (self);
meta_window_actor_sync_actor_geometry (self, FALSE);
if (!meta_is_wayland_compositor ())
{
if (!meta_window_is_mapped (priv->window))
meta_window_actor_detach_x11_pixmap (self);
if (priv->needs_pixmap)
clutter_actor_queue_redraw (CLUTTER_ACTOR (priv->surface));
}
}
void
meta_window_actor_effect_completed (MetaWindowActor *self,
gulong event)
{
MetaWindowActorPrivate *priv = self->priv;
/* NB: Keep in mind that when effects get completed it possible
* that the corresponding MetaWindow may have be been destroyed.
* In this case priv->window will == NULL */
switch (event)
{
case META_PLUGIN_MINIMIZE:
{
priv->minimize_in_progress--;
if (priv->minimize_in_progress < 0)
{
g_warning ("Error in minimize accounting.");
priv->minimize_in_progress = 0;
}
}
break;
case META_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;
}
break;
case META_PLUGIN_DESTROY:
priv->destroy_in_progress--;
if (priv->destroy_in_progress < 0)
{
g_warning ("Error in destroy accounting.");
priv->destroy_in_progress = 0;
}
break;
case META_PLUGIN_UNMAXIMIZE:
priv->unmaximize_in_progress--;
if (priv->unmaximize_in_progress < 0)
{
g_warning ("Error in unmaximize accounting.");
priv->unmaximize_in_progress = 0;
}
break;
case META_PLUGIN_MAXIMIZE:
priv->maximize_in_progress--;
if (priv->maximize_in_progress < 0)
{
g_warning ("Error in maximize accounting.");
priv->maximize_in_progress = 0;
}
break;
case META_PLUGIN_SWITCH_WORKSPACE:
g_assert_not_reached ();
break;
}
if (is_freeze_thaw_effect (event))
meta_window_actor_thaw (self);
if (!meta_window_actor_effect_in_progress (self))
meta_window_actor_after_effects (self);
}
/* Called to drop our reference to a window backing pixmap that we
* previously obtained with XCompositeNameWindowPixmap. We do this
* when the window is unmapped or when we want to update to a new
* pixmap for a new size.
*/
static void
meta_window_actor_detach_x11_pixmap (MetaWindowActor *self)
{
MetaWindowActorPrivate *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;
/* Get rid of all references to the pixmap before freeing it; it's unclear whether
* you are supposed to be able to free a GLXPixmap after freeing the underlying
* pixmap, but it certainly doesn't work with current DRI/Mesa
*/
meta_surface_actor_set_texture (priv->surface, NULL);
cogl_flush();
XFreePixmap (xdisplay, priv->back_pixmap);
priv->back_pixmap = None;
meta_window_actor_queue_create_x11_pixmap (self);
}
gboolean
meta_window_actor_should_unredirect (MetaWindowActor *self)
{
MetaWindow *metaWindow = meta_window_actor_get_meta_window (self);
MetaWindowActorPrivate *priv = self->priv;
if (meta_window_requested_dont_bypass_compositor (metaWindow))
return FALSE;
if (priv->opacity != 0xff)
return FALSE;
if (metaWindow->shape_region != NULL)
return FALSE;
if (priv->argb32 && !meta_window_requested_bypass_compositor (metaWindow))
return FALSE;
if (!meta_window_is_monitor_sized (metaWindow))
return FALSE;
if (meta_window_requested_bypass_compositor (metaWindow))
return TRUE;
if (meta_window_is_override_redirect (metaWindow))
return TRUE;
if (!meta_is_wayland_compositor () && priv->does_full_damage)
return TRUE;
return FALSE;
}
void
meta_window_actor_set_redirected (MetaWindowActor *self, gboolean state)
{
MetaWindow *metaWindow = meta_window_actor_get_meta_window (self);
MetaDisplay *display = meta_window_get_display (metaWindow);
Display *xdisplay = meta_display_get_xdisplay (display);
Window xwin = meta_window_get_toplevel_xwindow (metaWindow);
if (state)
{
meta_error_trap_push (display);
XCompositeRedirectWindow (xdisplay, xwin, CompositeRedirectManual);
meta_error_trap_pop (display);
meta_window_actor_detach_x11_pixmap (self);
self->priv->unredirected = FALSE;
}
else
{
meta_error_trap_push (display);
XCompositeUnredirectWindow (xdisplay, xwin, CompositeRedirectManual);
meta_error_trap_pop (display);
self->priv->unredirected = TRUE;
}
}
void
meta_window_actor_destroy (MetaWindowActor *self)
{
MetaWindow *window;
MetaCompScreen *info;
MetaWindowActorPrivate *priv;
MetaWindowType window_type;
priv = self->priv;
window = priv->window;
window_type = meta_window_get_window_type (window);
meta_window_set_compositor_private (window, NULL);
/*
* We remove the window from internal lookup hashes and thus any other
* unmap events etc fail
*/
info = meta_screen_get_compositor_data (priv->screen);
info->windows = g_list_remove (info->windows, (gconstpointer) self);
if (window_type == META_WINDOW_DROPDOWN_MENU ||
window_type == META_WINDOW_POPUP_MENU ||
window_type == META_WINDOW_TOOLTIP ||
window_type == META_WINDOW_NOTIFICATION ||
window_type == META_WINDOW_COMBO ||
window_type == META_WINDOW_DND ||
window_type == META_WINDOW_OVERRIDE_OTHER)
{
/*
* No effects, just kill it.
*/
clutter_actor_destroy (CLUTTER_ACTOR (self));
return;
}
priv->needs_destroy = TRUE;
if (!meta_window_actor_effect_in_progress (self))
clutter_actor_destroy (CLUTTER_ACTOR (self));
}
void
meta_window_actor_sync_actor_geometry (MetaWindowActor *self,
gboolean did_placement)
{
MetaWindowActorPrivate *priv = self->priv;
MetaRectangle window_rect;
meta_window_get_input_rect (priv->window, &window_rect);
/* When running as a display server we catch size changes when new
buffers are attached */
if (!meta_is_wayland_compositor ())
{
if (priv->last_width != window_rect.width ||
priv->last_height != window_rect.height)
{
priv->x11_size_changed = TRUE;
priv->last_width = window_rect.width;
priv->last_height = window_rect.height;
}
}
/* Normally we want freezing a window to also freeze its position; this allows
* windows to atomically move and resize together, either under app control,
* or because the user is resizing from the left/top. But on initial placement
* we need to assign a position, since immediately after the window
* is shown, the map effect will go into effect and prevent further geometry
* updates.
*/
if (is_frozen (self) && !did_placement)
return;
if (!meta_is_wayland_compositor ())
{
if (priv->x11_size_changed)
{
meta_window_actor_queue_create_x11_pixmap (self);
meta_window_actor_update_shape (self);
}
}
if (meta_window_actor_effect_in_progress (self))
return;
clutter_actor_set_position (CLUTTER_ACTOR (self),
window_rect.x, window_rect.y);
clutter_actor_set_size (CLUTTER_ACTOR (self),
window_rect.width, window_rect.height);
g_signal_emit (self, signals[POSITION_CHANGED], 0);
}
void
meta_window_actor_show (MetaWindowActor *self,
MetaCompEffect effect)
{
MetaWindowActorPrivate *priv;
MetaCompScreen *info;
gulong event;
priv = self->priv;
info = meta_screen_get_compositor_data (priv->screen);
g_return_if_fail (!priv->visible);
self->priv->visible = TRUE;
event = 0;
switch (effect)
{
case META_COMP_EFFECT_CREATE:
event = META_PLUGIN_MAP;
break;
case META_COMP_EFFECT_UNMINIMIZE:
/* FIXME: should have META_PLUGIN_UNMINIMIZE */
event = META_PLUGIN_MAP;
break;
case META_COMP_EFFECT_NONE:
break;
case META_COMP_EFFECT_DESTROY:
case META_COMP_EFFECT_MINIMIZE:
g_assert_not_reached();
}
if (priv->redecorating ||
info->switch_workspace_in_progress ||
event == 0 ||
!start_simple_effect (self, event))
{
clutter_actor_show (CLUTTER_ACTOR (self));
priv->redecorating = FALSE;
}
}
void
meta_window_actor_hide (MetaWindowActor *self,
MetaCompEffect effect)
{
MetaWindowActorPrivate *priv;
MetaCompScreen *info;
gulong event;
priv = self->priv;
info = meta_screen_get_compositor_data (priv->screen);
g_return_if_fail (priv->visible);
priv->visible = FALSE;
clutter_actor_set_reactive (CLUTTER_ACTOR (self), FALSE);
/* If a plugin is animating a workspace transition, we have to
* hold off on hiding the window, and do it after the workspace
* switch completes
*/
if (info->switch_workspace_in_progress)
return;
event = 0;
switch (effect)
{
case META_COMP_EFFECT_DESTROY:
event = META_PLUGIN_DESTROY;
break;
case META_COMP_EFFECT_MINIMIZE:
event = META_PLUGIN_MINIMIZE;
break;
case META_COMP_EFFECT_NONE:
break;
case META_COMP_EFFECT_UNMINIMIZE:
case META_COMP_EFFECT_CREATE:
g_assert_not_reached();
}
if (event == 0 ||
!start_simple_effect (self, event))
clutter_actor_hide (CLUTTER_ACTOR (self));
}
void
meta_window_actor_maximize (MetaWindowActor *self,
MetaRectangle *old_rect,
MetaRectangle *new_rect)
{
MetaCompScreen *info = meta_screen_get_compositor_data (self->priv->screen);
/* The window has already been resized (in order to compute new_rect),
* which by side effect caused the actor to be resized. Restore it to the
* old size and position */
clutter_actor_set_position (CLUTTER_ACTOR (self), old_rect->x, old_rect->y);
clutter_actor_set_size (CLUTTER_ACTOR (self), old_rect->width, old_rect->height);
self->priv->maximize_in_progress++;
meta_window_actor_freeze (self);
if (!info->plugin_mgr ||
!meta_plugin_manager_event_maximize (info->plugin_mgr,
self,
META_PLUGIN_MAXIMIZE,
new_rect->x, new_rect->y,
new_rect->width, new_rect->height))
{
self->priv->maximize_in_progress--;
meta_window_actor_thaw (self);
}
}
void
meta_window_actor_unmaximize (MetaWindowActor *self,
MetaRectangle *old_rect,
MetaRectangle *new_rect)
{
MetaCompScreen *info = meta_screen_get_compositor_data (self->priv->screen);
/* The window has already been resized (in order to compute new_rect),
* which by side effect caused the actor to be resized. Restore it to the
* old size and position */
clutter_actor_set_position (CLUTTER_ACTOR (self), old_rect->x, old_rect->y);
clutter_actor_set_size (CLUTTER_ACTOR (self), old_rect->width, old_rect->height);
self->priv->unmaximize_in_progress++;
meta_window_actor_freeze (self);
if (!info->plugin_mgr ||
!meta_plugin_manager_event_maximize (info->plugin_mgr,
self,
META_PLUGIN_UNMAXIMIZE,
new_rect->x, new_rect->y,
new_rect->width, new_rect->height))
{
self->priv->unmaximize_in_progress--;
meta_window_actor_thaw (self);
}
}
MetaWindowActor *
meta_window_actor_new (MetaWindow *window)
{
MetaScreen *screen = meta_window_get_screen (window);
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
MetaWindowActor *self;
MetaWindowActorPrivate *priv;
ClutterActor *window_group;
self = g_object_new (META_TYPE_WINDOW_ACTOR,
"meta-window", window,
NULL);
priv = self->priv;
priv->mapped = meta_window_toplevel_is_mapped (priv->window);
if (!meta_is_wayland_compositor ())
{
priv->last_width = -1;
priv->last_height = -1;
if (priv->mapped)
meta_window_actor_queue_create_x11_pixmap (self);
meta_window_actor_set_updates_frozen (self,
meta_window_updates_are_frozen (priv->window));
/* If a window doesn't start off with updates frozen, we should
* we should send a _NET_WM_FRAME_DRAWN immediately after the first drawn.
*/
if (priv->window->extended_sync_request_counter && !priv->updates_frozen)
meta_window_actor_queue_frame_drawn (self, FALSE);
}
meta_window_actor_sync_actor_geometry (self, priv->window->placed);
/* Hang our compositor window state off the MetaWindow for fast retrieval */
meta_window_set_compositor_private (window, G_OBJECT (self));
if (window->layer == META_LAYER_OVERRIDE_REDIRECT)
window_group = info->top_window_group;
else
window_group = info->window_group;
clutter_actor_add_child (window_group, CLUTTER_ACTOR (self));
clutter_actor_hide (CLUTTER_ACTOR (self));
clutter_actor_set_reactive (CLUTTER_ACTOR (self), TRUE);
/* Initial position in the stack is arbitrary; stacking will be synced
* before we first paint.
*/
info->windows = g_list_append (info->windows, self);
return self;
}
void
meta_window_actor_mapped (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
g_return_if_fail (!priv->mapped);
priv->mapped = TRUE;
if (!meta_is_wayland_compositor ())
meta_window_actor_queue_create_x11_pixmap (self);
}
void
meta_window_actor_unmapped (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
g_return_if_fail (priv->mapped);
priv->mapped = FALSE;
if (meta_window_actor_effect_in_progress (self))
return;
if (!meta_is_wayland_compositor ())
{
meta_window_actor_detach_x11_pixmap (self);
priv->needs_pixmap = FALSE;
}
}
#if 0
/* Print out a region; useful for debugging */
static void
print_region (cairo_region_t *region)
{
int n_rects;
int i;
n_rects = cairo_region_num_rectangles (region);
g_print ("[");
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (region, i, &rect);
g_print ("+%d+%dx%dx%d ",
rect.x, rect.y, rect.width, rect.height);
}
g_print ("]\n");
}
#endif
#if 0
/* Dump a region to a PNG file; useful for debugging */
static void
see_region (cairo_region_t *region,
int width,
int height,
char *filename)
{
cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
cairo_t *cr = cairo_create (surface);
gdk_cairo_region (cr, region);
cairo_fill (cr);
cairo_surface_write_to_png (surface, filename);
cairo_destroy (cr);
cairo_surface_destroy (surface);
}
#endif
/**
* meta_window_actor_set_unobscured_region:
* @self: a #MetaWindowActor
* @unobscured_region: the region of the screen that isn't completely
* obscured.
*
* Provides a hint as to what areas of the window need to queue
* redraws when damaged. Regions not in @unobscured_region are completely obscured.
*/
void
meta_window_actor_set_unobscured_region (MetaWindowActor *self,
cairo_region_t *unobscured_region)
{
MetaWindowActorPrivate *priv = self->priv;
if (priv->unobscured_region)
cairo_region_destroy (priv->unobscured_region);
if (unobscured_region)
priv->unobscured_region = cairo_region_copy (unobscured_region);
else
priv->unobscured_region = NULL;
}
/**
* meta_window_actor_set_clip_region_beneath:
* @self: a #MetaWindowActor
* @clip_region: the region of the screen that isn't completely
* obscured beneath the main window texture.
*
* Provides a hint as to what areas need to be drawn *beneath*
* the main window texture. This is the relevant clip region
* when drawing the shadow, properly accounting for areas of the
* shadow hid by the window itself. This will be set before painting
* then unset afterwards.
*/
static void
meta_window_actor_set_clip_region_beneath (MetaWindowActor *self,
cairo_region_t *beneath_region)
{
MetaWindowActorPrivate *priv = self->priv;
gboolean appears_focused = meta_window_appears_focused (priv->window);
if (appears_focused ? priv->focused_shadow : priv->unfocused_shadow)
{
g_clear_pointer (&priv->shadow_clip, cairo_region_destroy);
priv->shadow_clip = cairo_region_copy (beneath_region);
if (clip_shadow_under_window (self))
{
cairo_region_t *frame_bounds = meta_window_get_frame_bounds (priv->window);
cairo_region_subtract (priv->shadow_clip, frame_bounds);
}
}
}
static void
meta_window_actor_cull_out (MetaCullable *cullable,
cairo_region_t *unobscured_region,
cairo_region_t *clip_region)
{
MetaWindowActor *self = META_WINDOW_ACTOR (cullable);
if (!meta_is_wayland_compositor ())
{
MetaCompScreen *info = meta_screen_get_compositor_data (self->priv->screen);
/* Don't do any culling for the unredirected window */
if (self == info->unredirected_window)
return;
}
meta_window_actor_set_unobscured_region (self, unobscured_region);
meta_cullable_cull_out_children (cullable, unobscured_region, clip_region);
meta_window_actor_set_clip_region_beneath (self, clip_region);
}
static void
meta_window_actor_reset_culling (MetaCullable *cullable)
{
MetaWindowActor *self = META_WINDOW_ACTOR (cullable);
MetaWindowActorPrivate *priv = self->priv;
g_clear_pointer (&priv->shadow_clip, cairo_region_destroy);
meta_cullable_reset_culling_children (cullable);
}
static void
cullable_iface_init (MetaCullableInterface *iface)
{
iface->cull_out = meta_window_actor_cull_out;
iface->reset_culling = meta_window_actor_reset_culling;
}
/* When running as a wayland compositor we don't make requests for
* replacement pixmaps when resizing windows, we will instead be
* asked to attach replacement buffers by the clients. */
static void
check_needs_x11_pixmap (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->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 = meta_window_get_toplevel_xwindow (priv->window);
if (!priv->needs_pixmap)
return;
if (!priv->mapped)
return;
if (xwindow == meta_screen_get_xroot (screen) ||
xwindow == clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage)))
return;
if (priv->x11_size_changed)
{
meta_window_actor_detach_x11_pixmap (self);
priv->x11_size_changed = FALSE;
}
meta_error_trap_push (display);
if (priv->back_pixmap == None)
{
CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
CoglTexture *texture;
meta_error_trap_push (display);
priv->back_pixmap = XCompositeNameWindowPixmap (xdisplay, xwindow);
if (meta_error_trap_pop_with_return (display) != Success)
{
/* Probably a BadMatch if the window isn't viewable; we could
* GrabServer/GetWindowAttributes/NameWindowPixmap/UngrabServer/Sync
* to avoid this, but there's no reason to take two round trips
* when one will do. (We need that Sync if we want to handle failures
* for any reason other than !viewable. That's unlikely, but maybe
* we'll BadAlloc or something.)
*/
priv->back_pixmap = None;
}
if (priv->back_pixmap == None)
{
meta_verbose ("Unable to get named pixmap for %p\n", self);
goto out;
}
texture = COGL_TEXTURE (cogl_texture_pixmap_x11_new (ctx, priv->back_pixmap, FALSE, NULL));
if (G_UNLIKELY (!cogl_texture_pixmap_x11_is_using_tfp_extension (COGL_TEXTURE_PIXMAP_X11 (texture))))
g_warning ("NOTE: Not using GLX TFP!\n");
meta_surface_actor_set_texture (META_SURFACE_ACTOR (priv->surface), texture);
/* ::size-changed is supposed to refer to meta_window_get_frame_rect().
* Emitting it here works pretty much OK because a new value of the
* *input* rect (which is the outer rect with the addition of invisible
* borders) forces a new pixmap and we get here. In the rare case where
* a change to the window size was exactly balanced by a change to the
* invisible borders, we would miss emitting the signal. We would also
* emit spurious signals when we get a new pixmap without a new size,
* but that should be mostly harmless.
*/
g_signal_emit (self, signals[SIZE_CHANGED], 0);
}
priv->needs_pixmap = FALSE;
out:
meta_error_trap_pop (display);
}
static void
check_needs_shadow (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
MetaShadow *old_shadow = NULL;
MetaShadow **shadow_location;
gboolean recompute_shadow;
gboolean should_have_shadow;
gboolean appears_focused;
if (!priv->mapped)
return;
/* Calling meta_window_actor_has_shadow() here at every pre-paint is cheap
* and avoids the need to explicitly handle window type changes, which
* we would do if tried to keep track of when we might be adding or removing
* a shadow more explicitly. We only keep track of changes to the *shape* of
* the shadow with priv->recompute_shadow.
*/
should_have_shadow = meta_window_actor_has_shadow (self);
appears_focused = meta_window_appears_focused (priv->window);
if (appears_focused)
{
recompute_shadow = priv->recompute_focused_shadow;
priv->recompute_focused_shadow = FALSE;
shadow_location = &priv->focused_shadow;
}
else
{
recompute_shadow = priv->recompute_unfocused_shadow;
priv->recompute_unfocused_shadow = FALSE;
shadow_location = &priv->unfocused_shadow;
}
if (!should_have_shadow || recompute_shadow)
{
if (*shadow_location != NULL)
{
old_shadow = *shadow_location;
*shadow_location = NULL;
}
}
if (*shadow_location == NULL && should_have_shadow)
{
if (priv->shadow_shape == NULL)
priv->shadow_shape = meta_window_shape_new (priv->shape_region);
MetaShadowFactory *factory = meta_shadow_factory_get_default ();
const char *shadow_class = meta_window_actor_get_shadow_class (self);
cairo_rectangle_int_t shape_bounds;
meta_window_actor_get_shape_bounds (self, &shape_bounds);
*shadow_location = meta_shadow_factory_get_shadow (factory,
priv->shadow_shape,
shape_bounds.width, shape_bounds.height,
shadow_class, appears_focused);
}
if (old_shadow != NULL)
meta_shadow_unref (old_shadow);
}
void
meta_window_actor_process_x11_damage (MetaWindowActor *self,
XDamageNotifyEvent *event)
{
MetaWindowActorPrivate *priv = self->priv;
MetaCompScreen *info = meta_screen_get_compositor_data (priv->screen);
gboolean redraw_queued;
cairo_region_t *unobscured_region;
priv->received_x11_damage = TRUE;
if (meta_window_is_fullscreen (priv->window) && g_list_last (info->windows)->data == self && !priv->unredirected)
{
MetaRectangle window_rect;
meta_window_get_frame_rect (priv->window, &window_rect);
if (window_rect.x == event->area.x &&
window_rect.y == event->area.y &&
window_rect.width == event->area.width &&
window_rect.height == event->area.height)
priv->full_damage_frames_count++;
else
priv->full_damage_frames_count = 0;
if (priv->full_damage_frames_count >= 100)
priv->does_full_damage = TRUE;
}
/* Drop damage event for unredirected windows */
if (priv->unredirected)
return;
if (is_frozen (self))
{
/* The window is frozen due to an effect in progress: we ignore damage
* here on the off chance that this will stop the corresponding
* texture_from_pixmap from being update.
*
* needs_damage_all tracks that some unknown damage happened while the
* window was frozen so that when the window becomes unfrozen we can
* issue a full window update to cover any lost damage.
*
* It should be noted that this is an unreliable mechanism since it's
* quite likely that drivers will aim to provide a zero-copy
* implementation of the texture_from_pixmap extension and in those cases
* any drawing done to the window is always immediately reflected in the
* texture regardless of damage event handling.
*/
priv->needs_damage_all = TRUE;
return;
}
if (!priv->mapped || priv->needs_pixmap)
return;
unobscured_region =
clutter_actor_has_mapped_clones (CLUTTER_ACTOR (priv->surface))
? NULL : priv->unobscured_region;
redraw_queued = meta_surface_actor_damage_area (priv->surface,
event->area.x,
event->area.y,
event->area.width,
event->area.height,
unobscured_region);
priv->repaint_scheduled = priv->repaint_scheduled || redraw_queued;
}
void
meta_window_actor_sync_visibility (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
if (CLUTTER_ACTOR_IS_VISIBLE (self) != priv->visible)
{
if (priv->visible)
clutter_actor_show (CLUTTER_ACTOR (self));
else
clutter_actor_hide (CLUTTER_ACTOR (self));
}
}
static cairo_region_t *
scan_visible_region (guchar *mask_data,
int stride,
cairo_region_t *scan_area)
{
int i, n_rects = cairo_region_num_rectangles (scan_area);
MetaRegionBuilder builder;
meta_region_builder_init (&builder);
for (i = 0; i < n_rects; i++)
{
int x, y;
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (scan_area, i, &rect);
for (y = rect.y; y < (rect.y + rect.height); y++)
{
for (x = rect.x; x < (rect.x + rect.width); x++)
{
int x2 = x;
while (mask_data[y * stride + x2] == 255 && x2 < (rect.x + rect.width))
x2++;
if (x2 > x)
{
meta_region_builder_add_rectangle (&builder, x, y, x2 - x, 1);
x = x2;
}
}
}
}
return meta_region_builder_finish (&builder);
}
static void
build_and_scan_frame_mask (MetaWindowActor *self,
cairo_rectangle_int_t *client_area,
cairo_region_t *shape_region)
{
MetaWindowActorPrivate *priv = self->priv;
guchar *mask_data;
guint tex_width, tex_height;
MetaShapedTexture *stex;
CoglTexture *paint_tex, *mask_texture;
int stride;
cairo_t *cr;
cairo_surface_t *surface;
stex = meta_surface_actor_get_texture (priv->surface);
g_return_if_fail (stex);
meta_shaped_texture_set_mask_texture (stex, NULL);
paint_tex = meta_shaped_texture_get_texture (stex);
if (paint_tex == NULL)
return;
tex_width = cogl_texture_get_width (paint_tex);
tex_height = cogl_texture_get_height (paint_tex);
stride = cairo_format_stride_for_width (CAIRO_FORMAT_A8, tex_width);
/* Create data for an empty image */
mask_data = g_malloc0 (stride * tex_height);
surface = cairo_image_surface_create_for_data (mask_data,
CAIRO_FORMAT_A8,
tex_width,
tex_height,
stride);
cr = cairo_create (surface);
gdk_cairo_region (cr, shape_region);
cairo_fill (cr);
if (priv->window->frame != NULL)
{
cairo_region_t *frame_paint_region, *scanned_region;
cairo_rectangle_int_t rect = { 0, 0, tex_width, tex_height };
/* Make sure we don't paint the frame over the client window. */
frame_paint_region = cairo_region_create_rectangle (&rect);
cairo_region_subtract_rectangle (frame_paint_region, client_area);
gdk_cairo_region (cr, frame_paint_region);
cairo_clip (cr);
meta_frame_get_mask (priv->window->frame, cr);
cairo_surface_flush (surface);
scanned_region = scan_visible_region (mask_data, stride, frame_paint_region);
cairo_region_union (shape_region, scanned_region);
cairo_region_destroy (scanned_region);
cairo_region_destroy (frame_paint_region);
}
cairo_destroy (cr);
cairo_surface_destroy (surface);
if (meta_texture_rectangle_check (paint_tex))
{
mask_texture = meta_texture_rectangle_new (tex_width, tex_height,
COGL_PIXEL_FORMAT_A_8,
COGL_PIXEL_FORMAT_A_8,
stride,
mask_data,
NULL /* error */);
}
else
{
/* Note: we don't allow slicing for this texture because we
* need to use it with multi-texturing which doesn't support
* sliced textures */
mask_texture = cogl_texture_new_from_data (tex_width, tex_height,
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_A_8,
COGL_PIXEL_FORMAT_ANY,
stride,
mask_data);
}
meta_shaped_texture_set_mask_texture (stex, mask_texture);
cogl_object_unref (mask_texture);
g_free (mask_data);
}
static void
meta_window_actor_update_shape_region (MetaWindowActor *self,
cairo_rectangle_int_t *client_area)
{
MetaWindowActorPrivate *priv = self->priv;
cairo_region_t *region = NULL;
if (priv->window->frame != NULL && priv->window->shape_region != NULL)
{
region = cairo_region_copy (priv->window->shape_region);
cairo_region_translate (region, client_area->x, client_area->y);
}
else if (priv->window->shape_region != NULL)
{
region = cairo_region_reference (priv->window->shape_region);
}
else
{
/* If we don't have a shape on the server, that means that
* we have an implicit shape of one rectangle covering the
* entire window. */
region = cairo_region_create_rectangle (client_area);
}
if ((priv->window->shape_region != NULL) || (priv->window->frame != NULL))
build_and_scan_frame_mask (self, client_area, region);
g_clear_pointer (&priv->shape_region, cairo_region_destroy);
priv->shape_region = region;
g_clear_pointer (&priv->shadow_shape, meta_window_shape_unref);
meta_window_actor_invalidate_shadow (self);
}
static void
meta_window_actor_update_input_region (MetaWindowActor *self,
cairo_rectangle_int_t *client_area)
{
MetaWindowActorPrivate *priv = self->priv;
cairo_region_t *region = NULL;
if (priv->window->frame != NULL && priv->window->input_region != NULL)
{
region = meta_frame_get_frame_bounds (priv->window->frame);
cairo_region_subtract_rectangle (region, client_area);
/* input_region is in client window coordinates, so translate the
* input region into that coordinate system and back */
cairo_region_translate (region, -client_area->x, -client_area->y);
cairo_region_union (region, priv->window->input_region);
cairo_region_translate (region, client_area->x, client_area->y);
}
else if (priv->window->input_region != NULL)
{
region = cairo_region_reference (priv->window->input_region);
}
else
{
/* If we don't have a shape on the server, that means that
* we have an implicit shape of one rectangle covering the
* entire window. */
region = cairo_region_create_rectangle (client_area);
}
meta_surface_actor_set_input_region (priv->surface, region);
cairo_region_destroy (region);
}
static void
meta_window_actor_update_opaque_region (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
cairo_region_t *opaque_region;
if (priv->argb32 && priv->window->opaque_region != NULL)
{
MetaFrameBorders borders;
meta_frame_calc_borders (priv->window->frame, &borders);
/* The opaque region is defined to be a part of the
* window which ARGB32 will always paint with opaque
* pixels. For these regions, we want to avoid painting
* windows and shadows beneath them.
*
* If the client gives bad coordinates where it does not
* fully paint, the behavior is defined by the specification
* to be undefined, and considered a client bug. In mutter's
* case, graphical glitches will occur.
*/
opaque_region = cairo_region_copy (priv->window->opaque_region);
cairo_region_translate (opaque_region, borders.total.left, borders.total.top);
cairo_region_intersect (opaque_region, priv->shape_region);
}
else if (priv->argb32)
opaque_region = NULL;
else
opaque_region = cairo_region_reference (priv->shape_region);
meta_surface_actor_set_opaque_region (priv->surface, opaque_region);
cairo_region_destroy (opaque_region);
}
static void
check_needs_reshape (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
MetaFrameBorders borders;
cairo_rectangle_int_t client_area;
if (!priv->mapped)
return;
if (!priv->needs_reshape)
return;
meta_frame_calc_borders (priv->window->frame, &borders);
client_area.x = borders.total.left;
client_area.y = borders.total.top;
client_area.width = priv->window->rect.width;
if (priv->window->shaded)
client_area.height = 0;
else
client_area.height = priv->window->rect.height;
meta_window_actor_update_shape_region (self, &client_area);
if (priv->window->client_type == META_WINDOW_CLIENT_TYPE_X11)
{
meta_window_actor_update_input_region (self, &client_area);
meta_window_actor_update_opaque_region (self);
}
priv->needs_reshape = FALSE;
}
void
meta_window_actor_update_shape (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
priv->needs_reshape = TRUE;
if (is_frozen (self))
return;
clutter_actor_queue_redraw (CLUTTER_ACTOR (priv->surface));
}
static void
meta_window_actor_handle_updates (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
if (is_frozen (self))
{
/* The window is frozen due to a pending animation: we'll wait until
* the animation finishes to reshape and repair the window */
return;
}
if (!meta_is_wayland_compositor ())
{
if (priv->unredirected)
{
/* Nothing to do here until/if the window gets redirected again */
return;
}
if (priv->received_x11_damage)
{
meta_error_trap_push (display);
XDamageSubtract (xdisplay, priv->damage, None, None);
meta_error_trap_pop (display);
/* We need to make sure that any X drawing that happens before the
* XDamageSubtract() above is visible to subsequent GL rendering;
* the only standardized way to do this is EXT_x11_sync_object,
* which isn't yet widely available. For now, we count on details
* of Xorg and the open source drivers, and hope for the best
* otherwise.
*
* Xorg and open source driver specifics:
*
* The X server makes sure to flush drawing to the kernel before
* sending out damage events, but since we use DamageReportBoundingBox
* there may be drawing between the last damage event and the
* XDamageSubtract() that needs to be flushed as well.
*
* Xorg always makes sure that drawing is flushed to the kernel
* before writing events or responses to the client, so any round trip
* request at this point is sufficient to flush the GLX buffers.
*/
XSync (xdisplay, False);
priv->received_x11_damage = FALSE;
}
check_needs_x11_pixmap (self);
}
check_needs_reshape (self);
check_needs_shadow (self);
}
void
meta_window_actor_pre_paint (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
GList *l;
meta_window_actor_handle_updates (self);
for (l = priv->frames; l != NULL; l = l->next)
{
FrameData *frame = l->data;
if (frame->frame_counter == 0)
{
CoglOnscreen *onscreen = COGL_ONSCREEN (cogl_get_draw_framebuffer());
frame->frame_counter = cogl_onscreen_get_frame_counter (onscreen);
}
}
}
static void
do_send_frame_drawn (MetaWindowActor *self, FrameData *frame)
{
MetaWindowActorPrivate *priv = self->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
XClientMessageEvent ev = { 0, };
frame->frame_drawn_time = meta_compositor_monotonic_time_to_server_time (display,
g_get_monotonic_time ());
priv->frame_drawn_time = frame->frame_drawn_time;
ev.type = ClientMessage;
ev.window = meta_window_get_xwindow (priv->window);
ev.message_type = display->atom__NET_WM_FRAME_DRAWN;
ev.format = 32;
ev.data.l[0] = frame->sync_request_serial & G_GUINT64_CONSTANT(0xffffffff);
ev.data.l[1] = frame->sync_request_serial >> 32;
ev.data.l[2] = frame->frame_drawn_time & G_GUINT64_CONSTANT(0xffffffff);
ev.data.l[3] = frame->frame_drawn_time >> 32;
meta_error_trap_push (display);
XSendEvent (xdisplay, ev.window, False, 0, (XEvent*) &ev);
XFlush (xdisplay);
meta_error_trap_pop (display);
}
void
meta_window_actor_post_paint (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
priv->repaint_scheduled = FALSE;
/* This window had damage, but wasn't actually redrawn because
* it is obscured. So we should wait until timer expiration
* before sending _NET_WM_FRAME_* messages.
*/
if (priv->send_frame_messages_timer != 0)
return;
if (priv->needs_frame_drawn)
{
do_send_frame_drawn (self, priv->frames->data);
priv->needs_frame_drawn = FALSE;
}
}
static void
do_send_frame_timings (MetaWindowActor *self,
FrameData *frame,
gint refresh_interval,
gint64 presentation_time)
{
MetaWindowActorPrivate *priv = self->priv;
MetaDisplay *display = meta_screen_get_display (priv->screen);
Display *xdisplay = meta_display_get_xdisplay (display);
XClientMessageEvent ev = { 0, };
ev.type = ClientMessage;
ev.window = meta_window_get_xwindow (priv->window);
ev.message_type = display->atom__NET_WM_FRAME_TIMINGS;
ev.format = 32;
ev.data.l[0] = frame->sync_request_serial & G_GUINT64_CONSTANT(0xffffffff);
ev.data.l[1] = frame->sync_request_serial >> 32;
if (presentation_time != 0)
{
gint64 presentation_time_server = meta_compositor_monotonic_time_to_server_time (display,
presentation_time);
gint64 presentation_time_offset = presentation_time_server - frame->frame_drawn_time;
if (presentation_time_offset == 0)
presentation_time_offset = 1;
if ((gint32)presentation_time_offset == presentation_time_offset)
ev.data.l[2] = presentation_time_offset;
}
ev.data.l[3] = refresh_interval;
ev.data.l[4] = 1000 * META_SYNC_DELAY;
meta_error_trap_push (display);
XSendEvent (xdisplay, ev.window, False, 0, (XEvent*) &ev);
XFlush (xdisplay);
meta_error_trap_pop (display);
}
static void
send_frame_timings (MetaWindowActor *self,
FrameData *frame,
CoglFrameInfo *frame_info,
gint64 presentation_time)
{
float refresh_rate;
int refresh_interval;
refresh_rate = cogl_frame_info_get_refresh_rate (frame_info);
/* 0.0 is a flag for not known, but sanity-check against other odd numbers */
if (refresh_rate >= 1.0)
refresh_interval = (int) (0.5 + 1000000 / refresh_rate);
else
refresh_interval = 0;
do_send_frame_timings (self, frame, refresh_interval, presentation_time);
}
void
meta_window_actor_frame_complete (MetaWindowActor *self,
CoglFrameInfo *frame_info,
gint64 presentation_time)
{
MetaWindowActorPrivate *priv = self->priv;
GList *l;
for (l = priv->frames; l;)
{
GList *l_next = l->next;
FrameData *frame = l->data;
if (frame->frame_counter == cogl_frame_info_get_frame_counter (frame_info))
{
if (frame->frame_drawn_time != 0)
{
priv->frames = g_list_delete_link (priv->frames, l);
send_frame_timings (self, frame, frame_info, presentation_time);
frame_data_free (frame);
}
}
l = l_next;
}
}
void
meta_window_actor_invalidate_shadow (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
priv->recompute_focused_shadow = TRUE;
priv->recompute_unfocused_shadow = TRUE;
if (is_frozen (self))
return;
clutter_actor_queue_redraw (CLUTTER_ACTOR (self));
}
void
meta_window_actor_update_opacity (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
MetaDisplay *display = meta_screen_get_display (priv->screen);
MetaCompositor *compositor = meta_display_get_compositor (display);
Window xwin = meta_window_get_xwindow (priv->window);
gulong value;
guint8 opacity;
if (meta_prop_get_cardinal (display, xwin,
compositor->atom_net_wm_window_opacity,
&value))
{
opacity = (guint8)((gfloat)value * 255.0 / ((gfloat)0xffffffff));
}
else
opacity = 255;
self->priv->opacity = opacity;
clutter_actor_set_opacity (CLUTTER_ACTOR (self->priv->surface), opacity);
}
void
meta_window_actor_set_updates_frozen (MetaWindowActor *self,
gboolean updates_frozen)
{
/* On wayland we shouldn't need to ever freeze updates... */
if (!meta_is_wayland_compositor ())
{
MetaWindowActorPrivate *priv = self->priv;
updates_frozen = updates_frozen != FALSE;
if (priv->updates_frozen != updates_frozen)
{
priv->updates_frozen = updates_frozen;
if (updates_frozen)
meta_window_actor_freeze (self);
else
meta_window_actor_thaw (self);
}
}
}
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