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mutter/src/compositor/mutter-window.c
Tomas Frydrych e811109566 [MutterWindow] Fixed potential NULL dereference 
Avoid dereferencing NULL when the window is not yet placed on a workspace.
Added doc comment, noting this function is deprecated.

https://bugzilla.gnome.org/show_bug.cgi?id=592567
2009-10-09 16:50:38 +01:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#define _ISOC99_SOURCE /* for roundf */
#include <math.h>
#include <X11/extensions/shape.h>
#include <X11/extensions/Xcomposite.h>
#include <X11/extensions/Xdamage.h>
#include <X11/extensions/Xrender.h>
#include <clutter/x11/clutter-x11.h>
#include "display.h"
#include "errors.h"
#include "frame.h"
#include "window.h"
#include "xprops.h"
#include "compositor-private.h"
#include "mutter-shaped-texture.h"
#include "mutter-window-private.h"
#include "shadow.h"
#include "tidy/tidy-texture-frame.h"
struct _MutterWindowPrivate
{
XWindowAttributes attrs;
MetaWindow *window;
Window xwindow;
MetaScreen *screen;
ClutterActor *actor;
ClutterActor *shadow;
Pixmap back_pixmap;
MetaCompWindowType type;
Damage damage;
guint8 opacity;
gchar * desc;
/* If the window is shaped, a region that matches the shape */
GdkRegion *shape_region;
/* A rectangular region with the unshaped extends of the window
* texture */
GdkRegion *bounding_region;
/*
* 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;
guint visible : 1;
guint mapped : 1;
guint shaped : 1;
guint argb32 : 1;
guint disposed : 1;
guint redecorating : 1;
guint needs_repair : 1;
guint needs_reshape : 1;
guint size_changed : 1;
guint needs_destroy : 1;
guint no_shadow : 1;
guint no_more_x_calls : 1;
};
enum
{
PROP_MCW_META_WINDOW = 1,
PROP_MCW_META_SCREEN,
PROP_MCW_X_WINDOW,
PROP_MCW_X_WINDOW_ATTRIBUTES,
PROP_MCW_NO_SHADOW,
};
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_detach (MutterWindow *self);
static gboolean mutter_window_has_shadow (MutterWindow *self);
static void mutter_window_clear_shape_region (MutterWindow *self);
static void mutter_window_clear_bounding_region (MutterWindow *self);
static gboolean is_shaped (MetaDisplay *display,
Window xwindow);
/*
* 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 ())
static 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*) g_malloc (sizeof (XWindowAttributes));
*result = *attrs;
return result;
}
static void
meta_xattrs_free (XWindowAttributes *attrs)
{
g_return_if_fail (attrs != NULL);
g_free (attrs);
}
static 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;
}
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_object ("meta-window",
"MetaWindow",
"The displayed MetaWindow",
META_TYPE_WINDOW,
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);
pspec = g_param_spec_boolean ("no-shadow",
"No shadow",
"Do not add shaddow to this window",
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class,
PROP_MCW_NO_SHADOW,
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 void
mutter_meta_window_decorated_notify (MetaWindow *mw,
GParamSpec *arg1,
gpointer data)
{
MutterWindow *self = MUTTER_WINDOW (data);
MutterWindowPrivate *priv = self->priv;
MetaFrame *frame = meta_window_get_frame (mw);
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
Window new_xwindow;
MetaCompScreen *info;
XWindowAttributes attrs;
/*
* Basically, we have to reconstruct the the internals of this object
* from scratch, as everything has changed.
*/
priv->redecorating = TRUE;
if (frame)
new_xwindow = meta_frame_get_xwindow (frame);
else
new_xwindow = meta_window_get_xwindow (mw);
mutter_window_detach (self);
info = meta_screen_get_compositor_data (screen);
/*
* 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, FALSE);
priv->damage = None;
}
g_hash_table_remove (info->windows_by_xid, (gpointer) priv->xwindow);
g_hash_table_insert (info->windows_by_xid, (gpointer) new_xwindow, self);
g_free (priv->desc);
priv->desc = NULL;
priv->xwindow = new_xwindow;
if (!XGetWindowAttributes (xdisplay, new_xwindow, &attrs))
{
g_warning ("Could not obtain attributes for window 0x%x after "
"decoration change",
(guint) new_xwindow);
return;
}
g_object_set (self, "x-window-attributes", &attrs, NULL);
if (priv->shadow)
{
ClutterActor *p = clutter_actor_get_parent (priv->shadow);
if (CLUTTER_IS_CONTAINER (p))
clutter_container_remove_actor (CLUTTER_CONTAINER (p), priv->shadow);
else
clutter_actor_unparent (priv->shadow);
priv->shadow = NULL;
}
/*
* Recreate the contents.
*/
mutter_window_constructed (G_OBJECT (self));
}
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;
MetaCompositor *compositor;
compositor = meta_display_get_compositor (display);
mutter_window_update_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;
mutter_window_update_opacity (self);
if (mutter_window_has_shadow (self))
{
priv->shadow = mutter_create_shadow_frame (compositor);
clutter_container_add_actor (CLUTTER_CONTAINER (self), priv->shadow);
}
if (!priv->actor)
{
priv->actor = mutter_shaped_texture_new ();
if (!clutter_glx_texture_pixmap_using_extension (
CLUTTER_GLX_TEXTURE_PIXMAP (priv->actor)))
g_warning ("NOTE: Not using GLX TFP!\n");
clutter_container_add_actor (CLUTTER_CONTAINER (self), priv->actor);
/*
* Since we are holding a pointer to this actor independently of the
* ClutterContainer internals, and provide a public API to access it,
* add a reference here, so that if someone is messing about with us
* via the container interface, we do not end up with a dangling pointer.
* We will release it in dispose().
*/
g_object_ref (priv->actor);
g_signal_connect (priv->window, "notify::decorated",
G_CALLBACK (mutter_meta_window_decorated_notify), self);
}
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_raise_top (priv->actor);
}
mutter_window_update_shape (self, priv->shaped);
}
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);
mutter_window_clear_shape_region (self);
mutter_window_clear_bounding_region (self);
if (priv->damage != None)
{
meta_error_trap_push (display);
XDamageDestroy (xdisplay, priv->damage);
meta_error_trap_pop (display, FALSE);
priv->damage = None;
}
info->windows = g_list_remove (info->windows, (gconstpointer) self);
g_hash_table_remove (info->windows_by_xid, (gpointer) priv->xwindow);
/*
* Release the extra reference we took on the actor.
*/
g_object_unref (priv->actor);
priv->actor = NULL;
G_OBJECT_CLASS (mutter_window_parent_class)->dispose (object);
}
static void
mutter_window_finalize (GObject *object)
{
MutterWindow *self = MUTTER_WINDOW (object);
MutterWindowPrivate *priv = self->priv;
g_free (priv->desc);
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)
{
MutterWindow *self = MUTTER_WINDOW (object);
MutterWindowPrivate *priv = self->priv;
switch (prop_id)
{
case PROP_MCW_META_WINDOW:
priv->window = g_value_get_object (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;
case PROP_MCW_NO_SHADOW:
{
gboolean oldv = priv->no_shadow ? TRUE : FALSE;
gboolean newv = g_value_get_boolean (value);
if (oldv == newv)
return;
priv->no_shadow = newv;
if (newv && priv->shadow)
{
clutter_container_remove_actor (CLUTTER_CONTAINER (object),
priv->shadow);
priv->shadow = NULL;
}
else if (!newv && !priv->shadow && mutter_window_has_shadow (self))
{
gfloat w, h;
MetaDisplay *display = meta_screen_get_display (priv->screen);
MetaCompositor *compositor;
compositor = meta_display_get_compositor (display);
clutter_actor_get_size (CLUTTER_ACTOR (self), &w, &h);
priv->shadow = mutter_create_shadow_frame (compositor);
clutter_actor_set_size (priv->shadow, w, h);
clutter_container_add_actor (CLUTTER_CONTAINER (self), priv->shadow);
}
}
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_object (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;
case PROP_MCW_NO_SHADOW:
g_value_set_boolean (value, priv->no_shadow);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
void
mutter_window_update_window_type (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
priv->type = (MetaCompWindowType) meta_window_get_window_type (priv->window);
}
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;
if (priv->no_shadow)
return FALSE;
/*
* 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_DROPDOWN_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 *self)
{
if (!self)
return None;
return self->priv->xwindow;
}
/**
* mutter_window_get_meta_window:
*
* Gets the MetaWindow object that the the MutterWindow is displaying
*
* Return value: (transfer none): the displayed MetaWindow
*/
MetaWindow *
mutter_window_get_meta_window (MutterWindow *self)
{
return self->priv->window;
}
/**
* mutter_window_get_texture:
*
* Gets the ClutterActor that is used to display the contents of the window
*
* Return value: (transfer none): the ClutterActor for the contents
*/
ClutterActor *
mutter_window_get_texture (MutterWindow *self)
{
return self->priv->actor;
}
MetaCompWindowType
mutter_window_get_window_type (MutterWindow *self)
{
if (!self)
return 0;
return self->priv->type;
}
gboolean
mutter_window_is_override_redirect (MutterWindow *self)
{
return meta_window_is_override_redirect (self->priv->window);
}
const char *mutter_window_get_description (MutterWindow *self)
{
/*
* For windows managed by the WM, we just defer to the WM for the window
* description. For override-redirect windows, we create the description
* ourselves, but only on demand.
*/
if (self->priv->window)
return meta_window_get_description (self->priv->window);
if (G_UNLIKELY (self->priv->desc == NULL))
{
self->priv->desc = g_strdup_printf ("Override Redirect (0x%x)",
(guint) self->priv->xwindow);
}
return self->priv->desc;
}
/**
* mutter_window_get_workspace:
* @self: #MutterWindow
*
* 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
mutter_window_get_workspace (MutterWindow *self)
{
MutterWindowPrivate *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
mutter_window_showing_on_its_workspace (MutterWindow *self)
{
if (!self)
return FALSE;
/* If override redirect: */
if (!self->priv->window)
return TRUE;
return meta_window_showing_on_its_workspace (self->priv->window);
}
gboolean
mutter_window_effect_in_progress (MutterWindow *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 void
mutter_window_mark_for_repair (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
priv->needs_repair = TRUE;
if (!priv->mapped)
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 (priv->actor);
}
static gboolean
start_simple_effect (MutterWindow *self,
gulong event)
{
MutterWindowPrivate *priv = self->priv;
MetaCompScreen *info = meta_screen_get_compositor_data (priv->screen);
gint *counter = NULL;
if (!info->plugin_mgr)
return FALSE;
switch (event)
{
case MUTTER_PLUGIN_MINIMIZE:
counter = &priv->minimize_in_progress;
break;
case MUTTER_PLUGIN_MAP:
counter = &priv->map_in_progress;
break;
case MUTTER_PLUGIN_DESTROY:
counter = &priv->destroy_in_progress;
break;
case MUTTER_PLUGIN_UNMAXIMIZE:
case MUTTER_PLUGIN_MAXIMIZE:
case MUTTER_PLUGIN_SWITCH_WORKSPACE:
g_assert_not_reached ();
break;
}
g_assert (counter);
(*counter)++;
if (!mutter_plugin_manager_event_simple (info->plugin_mgr,
self,
event))
{
(*counter)--;
return FALSE;
}
return TRUE;
}
static void
mutter_window_after_effects (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
if (priv->needs_destroy)
{
clutter_actor_destroy (CLUTTER_ACTOR (self));
return;
}
mutter_window_sync_visibility (self);
mutter_window_sync_actor_position (self);
if (!meta_window_is_mapped (priv->window))
mutter_window_detach (self);
if (priv->needs_repair)
clutter_actor_queue_redraw (priv->actor);
}
void
mutter_window_effect_completed (MutterWindow *self,
gulong event)
{
MutterWindowPrivate *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 MUTTER_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 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;
}
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;
}
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;
}
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;
}
break;
case MUTTER_PLUGIN_SWITCH_WORKSPACE:
g_assert_not_reached ();
break;
}
if (!mutter_window_effect_in_progress (self))
mutter_window_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
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;
clutter_x11_texture_pixmap_set_pixmap (CLUTTER_X11_TEXTURE_PIXMAP (priv->actor),
None);
mutter_window_mark_for_repair (self);
}
void
mutter_window_destroy (MutterWindow *self)
{
MetaWindow *window;
MetaCompScreen *info;
MutterWindowPrivate *priv;
priv = self->priv;
window = priv->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);
g_hash_table_remove (info->windows_by_xid, (gpointer)priv->xwindow);
if (priv->type == META_COMP_WINDOW_DROPDOWN_MENU ||
priv->type == META_COMP_WINDOW_POPUP_MENU ||
priv->type == META_COMP_WINDOW_TOOLTIP ||
priv->type == META_COMP_WINDOW_NOTIFICATION ||
priv->type == META_COMP_WINDOW_COMBO ||
priv->type == META_COMP_WINDOW_DND ||
priv->type == META_COMP_WINDOW_OVERRIDE_OTHER)
{
/*
* No effects, just kill it.
*/
clutter_actor_destroy (CLUTTER_ACTOR (self));
return;
}
priv->needs_destroy = TRUE;
/*
* Once the window destruction is initiated we can no longer perform any
* furter X-based operations. For example, if we have a Map effect running,
* we cannot query the window geometry once the effect completes. So, flag
* this.
*/
priv->no_more_x_calls = TRUE;
if (!mutter_window_effect_in_progress (self))
clutter_actor_destroy (CLUTTER_ACTOR (self));
}
void
mutter_window_sync_actor_position (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
MetaRectangle window_rect;
meta_window_get_outer_rect (priv->window, &window_rect);
if (priv->attrs.width != window_rect.width ||
priv->attrs.height != window_rect.height)
{
priv->size_changed = TRUE;
mutter_window_mark_for_repair (self);
}
/* XXX deprecated: please use meta_window_get_outer_rect instead */
priv->attrs.width = window_rect.width;
priv->attrs.height = window_rect.height;
priv->attrs.x = window_rect.x;
priv->attrs.y = window_rect.y;
if (mutter_window_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);
}
void
mutter_window_show (MutterWindow *self,
MetaCompEffect effect)
{
MutterWindowPrivate *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 = MUTTER_PLUGIN_MAP;
break;
case META_COMP_EFFECT_UNMINIMIZE:
/* FIXME: should have MUTTER_PLUGIN_UNMINIMIZE */
event = MUTTER_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_all (CLUTTER_ACTOR (self));
priv->redecorating = FALSE;
}
}
void
mutter_window_hide (MutterWindow *self,
MetaCompEffect effect)
{
MutterWindowPrivate *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;
/* 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 = MUTTER_PLUGIN_DESTROY;
break;
case META_COMP_EFFECT_MINIMIZE:
event = MUTTER_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
mutter_window_maximize (MutterWindow *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++;
if (!info->plugin_mgr ||
!mutter_plugin_manager_event_maximize (info->plugin_mgr,
self,
MUTTER_PLUGIN_MAXIMIZE,
new_rect->x, new_rect->y,
new_rect->width, new_rect->height))
{
self->priv->maximize_in_progress--;
}
}
void
mutter_window_unmaximize (MutterWindow *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++;
if (!info->plugin_mgr ||
!mutter_plugin_manager_event_maximize (info->plugin_mgr,
self,
MUTTER_PLUGIN_UNMAXIMIZE,
new_rect->x, new_rect->y,
new_rect->width, new_rect->height))
{
self->priv->unmaximize_in_progress--;
}
}
MutterWindow *
mutter_window_new (MetaWindow *window)
{
MetaScreen *screen = meta_window_get_screen (window);
MetaDisplay *display = meta_screen_get_display (screen);
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
MutterWindow *self;
MutterWindowPrivate *priv;
MetaFrame *frame;
Window top_window;
XWindowAttributes attrs;
frame = meta_window_get_frame (window);
if (frame)
top_window = meta_frame_get_xwindow (frame);
else
top_window = meta_window_get_xwindow (window);
meta_verbose ("add window: Meta %p, xwin 0x%x\n", window, (guint)top_window);
/* FIXME: Remove the redundant data we store in self->priv->attrs, and
* simply query metacity core for the data. */
if (!XGetWindowAttributes (meta_display_get_xdisplay (display), top_window, &attrs))
return NULL;
self = g_object_new (MUTTER_TYPE_COMP_WINDOW,
"meta-window", window,
"x-window", top_window,
"meta-screen", screen,
"x-window-attributes", &attrs,
NULL);
priv = self->priv;
priv->mapped = meta_window_toplevel_is_mapped (priv->window);
mutter_window_sync_actor_position (self);
/* Hang our compositor window state off the MetaWindow for fast retrieval */
meta_window_set_compositor_private (window, G_OBJECT (self));
clutter_container_add_actor (CLUTTER_CONTAINER (info->window_group),
CLUTTER_ACTOR (self));
clutter_actor_hide (CLUTTER_ACTOR (self));
/* Initial position in the stack is arbitrary; stacking will be synced
* before we first paint.
*/
info->windows = g_list_append (info->windows, self);
g_hash_table_insert (info->windows_by_xid, (gpointer) top_window, self);
return self;
}
void
mutter_window_mapped (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
g_return_if_fail (!priv->mapped);
priv->mapped = TRUE;
mutter_window_mark_for_repair (self);
}
void
mutter_window_unmapped (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
g_return_if_fail (priv->mapped);
priv->mapped = FALSE;
if (mutter_window_effect_in_progress (self))
return;
mutter_window_detach (self);
priv->needs_repair = FALSE;
}
static void
mutter_window_clear_shape_region (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
if (priv->shape_region)
{
gdk_region_destroy (priv->shape_region);
priv->shape_region = NULL;
}
}
static void
mutter_window_clear_bounding_region (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
if (priv->bounding_region)
{
gdk_region_destroy (priv->bounding_region);
priv->bounding_region = NULL;
}
}
static void
mutter_window_update_bounding_region (MutterWindow *self,
int width,
int height)
{
MutterWindowPrivate *priv = self->priv;
GdkRectangle bounding_rectangle = { 0, 0, width, height };
mutter_window_clear_bounding_region (self);
priv->bounding_region = gdk_region_rectangle (&bounding_rectangle);
}
static void
mutter_window_update_shape_region (MutterWindow *self,
int n_rects,
XRectangle *rects)
{
MutterWindowPrivate *priv = self->priv;
int i;
mutter_window_clear_shape_region (self);
priv->shape_region = gdk_region_new ();
for (i = 0; i < n_rects; i++)
{
GdkRectangle rect = { rects[i].x, rects[i].y, rects[i].width, rects[i].height };
gdk_region_union_with_rect (priv->shape_region, &rect);
}
}
/**
* mutter_window_get_obscured_region:
* @self: a #MutterWindow
*
* Gets the region that is completely obscured by the window. Coordinates
* are relative to the upper-left of the window.
*
* Return value: (transfer none): the area obscured by the window,
* %NULL is the same as an empty region.
*/
GdkRegion *
mutter_window_get_obscured_region (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
if (!priv->argb32 && priv->back_pixmap)
{
if (priv->shaped)
return priv->shape_region;
else
return priv->bounding_region;
}
else
return NULL;
}
#if 0
/* Print out a region; useful for debugging */
static void
dump_region (GdkRegion *region)
{
GdkRectangle *rects;
int n_rects;
int i;
gdk_region_get_rectangles (region, &rects, &n_rects);
g_print ("[");
for (i = 0; i < n_rects; i++)
{
g_print ("+%d+%dx%dx%d ",
rects[i].x, rects[i].y, rects[i].width, rects[i].height);
}
g_print ("]\n");
g_free (rects);
}
#endif
/**
* mutter_window_set_visible_region:
* @self: a #MutterWindow
* @visible_region: the region of the screen that isn't completely
* obscured.
*
* Provides a hint as to what areas of the window need to be
* drawn. Regions not in @visible_region are completely obscured.
* This will be set before painting then unset afterwards.
*/
void
mutter_window_set_visible_region (MutterWindow *self,
GdkRegion *visible_region)
{
MutterWindowPrivate *priv = self->priv;
GdkRegion *texture_clip_region = NULL;
/* Get the area of the window texture that would be drawn if
* we weren't obscured at all
*/
if (priv->shaped)
{
if (priv->shape_region)
texture_clip_region = gdk_region_copy (priv->shape_region);
}
else
{
if (priv->bounding_region)
texture_clip_region = gdk_region_copy (priv->bounding_region);
}
if (!texture_clip_region)
texture_clip_region = gdk_region_new ();
/* Then intersect that with the visible region to get the region
* that we actually need to redraw.
*/
gdk_region_intersect (texture_clip_region, visible_region);
/* Assumes ownership */
mutter_shaped_texture_set_clip_region (MUTTER_SHAPED_TEXTURE (priv->actor),
texture_clip_region);
}
/**
* mutter_window_set_visible_region_beneath:
* @self: a #MutterWindow
* @visible_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 visible 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.
*/
void
mutter_window_set_visible_region_beneath (MutterWindow *self,
GdkRegion *beneath_region)
{
MutterWindowPrivate *priv = self->priv;
if (priv->shadow)
{
GdkRectangle shadow_rect;
ClutterActorBox box;
GdkOverlapType overlap;
/* 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.
*/
clutter_actor_get_allocation_box (priv->shadow, &box);
shadow_rect.x = roundf (box.x1);
shadow_rect.y = roundf (box.y1);
shadow_rect.width = roundf (box.x2 - box.x1);
shadow_rect.height = roundf (box.y2 - box.y1);
overlap = gdk_region_rect_in (beneath_region, &shadow_rect);
tidy_texture_frame_set_needs_paint (TIDY_TEXTURE_FRAME (priv->shadow),
overlap != GDK_OVERLAP_RECTANGLE_OUT);
}
}
/**
* mutter_window_reset_visible_regions:
* @self: a #MutterWindow
*
* Unsets the regions set by mutter_window_reset_visible_region() and
*mutter_window_reset_visible_region_beneath()
*/
void
mutter_window_reset_visible_regions (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
mutter_shaped_texture_set_clip_region (MUTTER_SHAPED_TEXTURE (priv->actor),
NULL);
if (priv->shadow)
tidy_texture_frame_set_needs_paint (TIDY_TEXTURE_FRAME (priv->shadow), TRUE);
}
static void
check_needs_repair (MutterWindow *self)
{
MutterWindowPrivate *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);
MetaCompositor *compositor;
Window xwindow = priv->xwindow;
gboolean full = FALSE;
if (!priv->needs_repair)
return;
if (!priv->mapped)
return;
if (xwindow == meta_screen_get_xroot (screen) ||
xwindow == clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage)))
return;
compositor = meta_display_get_compositor (display);
if (priv->size_changed)
{
mutter_window_detach (self);
priv->size_changed = FALSE;
}
meta_error_trap_push (display);
if (priv->back_pixmap == None)
{
gint pxm_width, pxm_height;
meta_error_trap_push (display);
priv->back_pixmap = XCompositeNameWindowPixmap (xdisplay, xwindow);
if (meta_error_trap_pop_with_return (display, FALSE) != 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);
mutter_window_update_bounding_region (self, 0, 0);
return;
}
/* MUST call before setting pixmap or serious performance issues
* seemingly caused by cogl_texture_set_filters() in set_filter
* Not sure if that call is actually needed.
*/
if (!compositor->no_mipmaps)
clutter_texture_set_filter_quality (CLUTTER_TEXTURE (priv->actor),
CLUTTER_TEXTURE_QUALITY_HIGH );
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);
if (priv->shadow)
clutter_actor_set_size (priv->shadow, pxm_width, pxm_height);
mutter_window_update_bounding_region (self, 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;
}
void
mutter_window_process_damage (MutterWindow *self,
XDamageNotifyEvent *event)
{
mutter_window_mark_for_repair (self);
}
void
mutter_window_sync_visibility (MutterWindow *self)
{
MutterWindowPrivate *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 void
check_needs_reshape (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
if (!priv->needs_reshape)
return;
mutter_shaped_texture_clear_rectangles (MUTTER_SHAPED_TEXTURE (priv->actor));
mutter_window_clear_shape_region (self);
#ifdef HAVE_SHAPE
if (priv->shaped)
{
Display *xdisplay = meta_display_get_xdisplay (meta_window_get_display (priv->window));
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);
mutter_window_update_shape_region (self, n_rects, rects);
XFree (rects);
}
}
#endif
priv->needs_reshape = FALSE;
}
void
mutter_window_update_shape (MutterWindow *self,
gboolean shaped)
{
MutterWindowPrivate *priv = self->priv;
priv->shaped = shaped;
priv->needs_reshape = TRUE;
clutter_actor_queue_redraw (priv->actor);
}
void
mutter_window_pre_paint (MutterWindow *self)
{
MutterWindowPrivate *priv = self->priv;
/* The window is frozen due to a pending animation: we'll wait until
* the animation finishes to reshape and repair the window */
if (priv->destroy_in_progress ||
priv->maximize_in_progress ||
priv->unmaximize_in_progress)
return;
check_needs_reshape (self);
check_needs_repair (self);
}
void
mutter_window_update_opacity (MutterWindow *self)
{
MutterWindowPrivate *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), opacity);
}
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