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mutter/src/compositor/meta-window-actor.c

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include <config.h>
#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>
#define COGL_ENABLE_EXPERIMENTAL_API
#include <cogl/cogl-texture-pixmap-x11.h>
#include <gdk/gdk.h> /* for gdk_rectangle_union() */
#include <meta/display.h>
#include <meta/errors.h>
#include "frame.h"
#include <meta/window.h>
#include "xprops.h"
#include "compositor-private.h"
#include "meta-shadow-factory-private.h"
#include "meta-shaped-texture.h"
#include "meta-window-actor-private.h"
enum {
POSITION_CHANGED,
SIZE_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = {0};
struct _MetaWindowActorPrivate
{
MetaWindow *window;
Window xwindow;
MetaScreen *screen;
ClutterActor *actor;
/* 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;
Pixmap back_pixmap;
Damage damage;
guint8 opacity;
guint8 shadow_opacity;
gchar * desc;
/* If the window is shaped, a region that matches the shape */
cairo_region_t *shape_region;
/* A rectangular region with the visible extents of the window */
cairo_region_t *bounding_region;
/* The region we should clip to when painting the shadow */
cairo_region_t *shadow_clip;
/* Extracted size-invariant shape used for shadows */
MetaWindowShape *shadow_shape;
gint last_width;
gint last_height;
MetaFrameBorders last_borders;
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;
guint visible : 1;
guint mapped : 1;
guint argb32 : 1;
guint disposed : 1;
guint redecorating : 1;
guint needs_damage_all : 1;
guint received_damage : 1;
guint needs_pixmap : 1;
guint needs_reshape : 1;
guint recompute_focused_shadow : 1;
guint recompute_unfocused_shadow : 1;
guint size_changed : 1;
guint needs_destroy : 1;
guint no_shadow : 1;
guint no_more_x_calls : 1;
guint unredirected : 1;
};
enum
{
PROP_META_WINDOW = 1,
PROP_META_SCREEN,
PROP_X_WINDOW,
PROP_X_WINDOW_ATTRIBUTES,
PROP_NO_SHADOW,
PROP_SHADOW_CLASS
};
#define DEFAULT_SHADOW_RADIUS 12
#define DEFAULT_SHADOW_X_OFFSET 0
#define DEFAULT_SHADOW_Y_OFFSET 8
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 (MetaWindowActor *self);
static gboolean meta_window_actor_has_shadow (MetaWindowActor *self);
static void meta_window_actor_clear_shape_region (MetaWindowActor *self);
static void meta_window_actor_clear_bounding_region (MetaWindowActor *self);
static void meta_window_actor_clear_shadow_clip (MetaWindowActor *self);
G_DEFINE_TYPE (MetaWindowActor, meta_window_actor, CLUTTER_TYPE_GROUP);
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_pointer ("meta-screen",
"MetaScreen",
"MetaScreen",
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class,
PROP_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_X_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,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[SIZE_CHANGED] =
g_signal_new ("size-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL,
g_cclosure_marshal_VOID__VOID,
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;
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;
/*
* 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);
meta_window_actor_detach (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;
}
g_free (priv->desc);
priv->desc = NULL;
priv->xwindow = new_xwindow;
/*
* 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
meta_window_actor_constructed (GObject *object)
{
MetaWindowActor *self = META_WINDOW_ACTOR (object);
MetaWindowActorPrivate *priv = self->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
Window xwindow = priv->xwindow;
MetaWindow *window = priv->window;
Display *xdisplay = meta_display_get_xdisplay (display);
XRenderPictFormat *format;
priv->damage = XDamageCreate (xdisplay, xwindow,
XDamageReportBoundingBox);
format = XRenderFindVisualFormat (xdisplay, window->xvisual);
if (format && format->type == PictTypeDirect && format->direct.alphaMask)
priv->argb32 = TRUE;
if (!priv->actor)
{
priv->actor = meta_shaped_texture_new ();
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 (window, "notify::decorated",
G_CALLBACK (window_decorated_notify), self);
g_signal_connect (window, "notify::appears-focused",
G_CALLBACK (window_appears_focused_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);
}
meta_window_actor_update_opacity (self);
meta_window_actor_update_shape (self);
}
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;
display = meta_screen_get_display (screen);
xdisplay = meta_display_get_xdisplay (display);
info = meta_screen_get_compositor_data (screen);
meta_window_actor_detach (self);
meta_window_actor_clear_shape_region (self);
meta_window_actor_clear_bounding_region (self);
meta_window_actor_clear_shadow_clip (self);
if (priv->shadow_class != NULL)
{
g_free (priv->shadow_class);
priv->shadow_class = NULL;
}
if (priv->focused_shadow != NULL)
{
meta_shadow_unref (priv->focused_shadow);
priv->focused_shadow = NULL;
}
if (priv->unfocused_shadow != NULL)
{
meta_shadow_unref (priv->unfocused_shadow);
priv->unfocused_shadow = NULL;
}
if (priv->shadow_shape != NULL)
{
meta_window_shape_unref (priv->shadow_shape);
priv->shadow_shape = NULL;
}
if (priv->damage != None)
{
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);
if (priv->window)
{
g_object_unref (priv->window);
priv->window = NULL;
}
/*
* Release the extra reference we took on the actor.
*/
g_object_unref (priv->actor);
priv->actor = NULL;
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_free (priv->desc);
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_META_SCREEN:
priv->screen = g_value_get_pointer (value);
break;
case PROP_X_WINDOW:
priv->xwindow = g_value_get_ulong (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_META_SCREEN:
g_value_set_pointer (value, priv->screen);
break;
case PROP_X_WINDOW:
g_value_set_ulong (value, priv->xwindow);
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;
/* We need to be defensive here because there are corner cases
* where getting the shape fails on a window being destroyed
* and similar.
*/
if (priv->shape_region)
cairo_region_get_extents (priv->shape_region, bounds);
else if (priv->bounding_region)
cairo_region_get_extents (priv->bounding_region, bounds);
else
bounds->x = bounds->y = bounds->width = bounds->height = 0;
}
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;
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_pre_paint (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);
}
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;
/*
* Always put a shadow around windows with a frame - This should override
* the restriction about not putting a shadow around ARGB windows.
*/
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; eventually we should generate a
* shadow from the input shape for such windows.
*/
if (priv->argb32 || priv->opacity != 0xff)
{
meta_verbose ("Window 0x%x has no shadow as it is ARGB\n",
(guint)priv->xwindow);
return FALSE;
}
/*
* Add shadows to override redirect windows (e.g., Gtk menus).
*/
if (priv->window->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 (window_type == META_WINDOW_DND ||
window_type == META_WINDOW_DESKTOP)
{
meta_verbose ("Window 0x%x has no shadow as it is DND or Desktop\n",
(guint)priv->xwindow);
return FALSE;
}
if (window_type == META_WINDOW_MENU
#if 0
|| window_type == META_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 (window_type == META_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;
}
/**
* meta_window_actor_get_x_window: (skip)
*
*/
Window
meta_window_actor_get_x_window (MetaWindowActor *self)
{
if (!self)
return None;
return self->priv->xwindow;
}
/**
* meta_window_actor_get_meta_window:
*
* 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:
*
* 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 self->priv->actor;
}
/**
* meta_window_actor_is_destroyed:
*
* 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);
}
const char *meta_window_actor_get_description (MetaWindowActor *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;
}
/**
* 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)
{
self->priv->freeze_count++;
}
static void
meta_window_actor_damage_all (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
ClutterX11TexturePixmap *texture_x11 = CLUTTER_X11_TEXTURE_PIXMAP (priv->actor);
guint pixmap_width = 0;
guint pixmap_height = 0;
if (!priv->needs_damage_all)
return;
g_object_get (texture_x11,
"pixmap-width", &pixmap_width,
"pixmap-height", &pixmap_height,
NULL);
clutter_x11_texture_pixmap_update_area (texture_x11,
0,
0,
pixmap_width,
pixmap_height);
priv->needs_damage_all = FALSE;
}
static void
meta_window_actor_thaw (MetaWindowActor *self)
{
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;
/* 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);
}
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 void
meta_window_actor_queue_create_pixmap (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
priv->needs_pixmap = 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
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_position (self);
if (!meta_window_is_mapped (priv->window))
meta_window_actor_detach (self);
if (priv->needs_pixmap)
clutter_actor_queue_redraw (priv->actor);
}
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 (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
*/
clutter_x11_texture_pixmap_set_pixmap (CLUTTER_X11_TEXTURE_PIXMAP (priv->actor),
None);
meta_shaped_texture_clear (META_SHAPED_TEXTURE (priv->actor));
cogl_flush();
XFreePixmap (xdisplay, priv->back_pixmap);
priv->back_pixmap = None;
meta_window_actor_queue_create_pixmap (self);
}
gboolean
meta_window_actor_should_unredirect (MetaWindowActor *self)
{
MetaWindow *metaWindow = meta_window_actor_get_meta_window (self);
MetaScreen *screen = meta_window_get_screen (metaWindow);
if (meta_window_is_override_redirect (metaWindow))
{
int screen_width, screen_height;
MetaRectangle window_rect;
meta_screen_get_size (screen, &screen_width, &screen_height);
meta_window_get_outer_rect (metaWindow, &window_rect);
if (window_rect.x == 0 && window_rect.y == 0 &&
window_rect.width == screen_width && window_rect.height == screen_height)
return TRUE;
else
{
int num_monitors = meta_screen_get_n_monitors (screen);
int i;
MetaRectangle monitor_rect;
for (i = 0; i < num_monitors; i++)
{
meta_screen_get_monitor_geometry (screen , i, &monitor_rect);
if (monitor_rect.x == window_rect.x && monitor_rect.y == window_rect.y &&
monitor_rect.width == window_rect.width && monitor_rect.height == window_rect.height)
return TRUE;
}
}
}
return FALSE;
}
void
meta_window_actor_set_redirected (MetaWindowActor *self, gboolean state)
{
MetaWindow *metaWindow = meta_window_actor_get_meta_window (self);
Display *xdisplay = meta_display_get_xdisplay (meta_window_get_display (metaWindow));
Window xwin = meta_window_actor_get_x_window (self);
if (state)
{
XCompositeRedirectWindow (xdisplay, xwin, CompositeRedirectManual);
meta_window_actor_queue_create_pixmap (self);
self->priv->unredirected = FALSE;
}
else
{
XCompositeUnredirectWindow (xdisplay, xwin, CompositeRedirectManual);
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;
/*
* 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 (!meta_window_actor_effect_in_progress (self))
clutter_actor_destroy (CLUTTER_ACTOR (self));
}
void
meta_window_actor_sync_actor_position (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
MetaRectangle window_rect;
meta_window_get_input_rect (priv->window, &window_rect);
if (priv->last_width != window_rect.width ||
priv->last_height != window_rect.height)
{
priv->size_changed = TRUE;
meta_window_actor_queue_create_pixmap (self);
priv->last_width = window_rect.width;
priv->last_height = window_rect.height;
}
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_all (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;
/* 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;
MetaFrame *frame;
Window top_window;
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);
self = g_object_new (META_TYPE_WINDOW_ACTOR,
"meta-window", window,
"x-window", top_window,
"meta-screen", screen,
NULL);
priv = self->priv;
priv->last_width = -1;
priv->last_height = -1;
priv->mapped = meta_window_toplevel_is_mapped (priv->window);
if (priv->mapped)
meta_window_actor_queue_create_pixmap (self);
meta_window_actor_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);
return self;
}
void
meta_window_actor_mapped (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
g_return_if_fail (!priv->mapped);
priv->mapped = TRUE;
meta_window_actor_queue_create_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;
meta_window_actor_detach (self);
priv->needs_pixmap = FALSE;
}
static void
meta_window_actor_clear_shape_region (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
if (priv->shape_region)
{
cairo_region_destroy (priv->shape_region);
priv->shape_region = NULL;
}
}
static void
meta_window_actor_clear_bounding_region (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
if (priv->bounding_region)
{
cairo_region_destroy (priv->bounding_region);
priv->bounding_region = NULL;
}
}
static void
meta_window_actor_clear_shadow_clip (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
if (priv->shadow_clip)
{
cairo_region_destroy (priv->shadow_clip);
priv->shadow_clip = NULL;
}
}
static void
meta_window_actor_update_bounding_region_and_borders (MetaWindowActor *self,
int width,
int height)
{
MetaWindowActorPrivate *priv = self->priv;
MetaFrame *frame;
MetaFrameBorders borders;
cairo_rectangle_int_t bounding_rectangle;
bounding_rectangle.x = 0;
bounding_rectangle.y = 0;
frame = priv->window->frame;
if (frame != NULL)
{
meta_frame_calc_borders (frame, &borders);
bounding_rectangle.x = borders.invisible.left;
bounding_rectangle.y = borders.invisible.top;
width -= borders.invisible.left + borders.invisible.right;
height -= borders.invisible.top + borders.invisible.bottom;
}
bounding_rectangle.width = width;
bounding_rectangle.height = height;
if (priv->bounding_region != NULL)
{
cairo_rectangle_int_t old_bounding_rectangle;
cairo_region_get_extents (priv->bounding_region, &old_bounding_rectangle);
/* Because the bounding region doesn't include the invisible borders,
* we need to make sure that the border sizes haven't changed before
* short-circuiting early.
*/
if (bounding_rectangle.width == old_bounding_rectangle.width &&
bounding_rectangle.height == old_bounding_rectangle.height &&
priv->last_borders.invisible.left == borders.invisible.left &&
priv->last_borders.invisible.right == borders.invisible.right &&
priv->last_borders.invisible.top == borders.invisible.top &&
priv->last_borders.invisible.bottom == borders.invisible.bottom)
return;
}
priv->last_borders = borders;
meta_window_actor_clear_bounding_region (self);
priv->bounding_region = cairo_region_create_rectangle (&bounding_rectangle);
meta_window_actor_update_shape (self);
g_signal_emit (self, signals[SIZE_CHANGED], 0);
}
static void
meta_window_actor_update_shape_region (MetaWindowActor *self,
cairo_region_t *region)
{
MetaWindowActorPrivate *priv = self->priv;
meta_window_actor_clear_shape_region (self);
/* region must be non-null */
priv->shape_region = region;
cairo_region_reference (region);
/* Our "shape_region" is called the "bounding region" in the X Shape
* Extension Documentation.
*
* Our "bounding_region" is called the "bounding rectangle", which defines
* the shape of the window as if it the window was unshaped.
*
* The X Shape extension requires that the "bounding region" can never
* extend outside the "bounding rectangle", and says it must be implicitly
* clipped before rendering. The region we get back hasn't been clipped.
* We explicitly clip the region here.
*/
if (priv->bounding_region != NULL)
cairo_region_intersect (priv->shape_region, priv->bounding_region);
}
/**
* meta_window_actor_get_obscured_region:
* @self: a #MetaWindowActor
*
* 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.
*/
cairo_region_t *
meta_window_actor_get_obscured_region (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
if (!priv->argb32 && priv->opacity == 0xff && priv->back_pixmap)
{
if (priv->shape_region)
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 (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
/**
* meta_window_actor_set_visible_region:
* @self: a #MetaWindowActor
* @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
meta_window_actor_set_visible_region (MetaWindowActor *self,
cairo_region_t *visible_region)
{
MetaWindowActorPrivate *priv = self->priv;
cairo_region_t *texture_clip_region = NULL;
/* Get the area of the window texture that would be drawn if
* we weren't obscured at all
*/
texture_clip_region = meta_shaped_texture_get_visible_pixels_region (META_SHAPED_TEXTURE (priv->actor));
texture_clip_region = cairo_region_copy (texture_clip_region);
/* Then intersect that with the visible region to get the region
* that we actually need to redraw.
*/
cairo_region_intersect (texture_clip_region, visible_region);
/* Assumes ownership */
meta_shaped_texture_set_clip_region (META_SHAPED_TEXTURE (priv->actor),
texture_clip_region);
}
/**
* meta_window_actor_set_visible_region_beneath:
* @self: a #MetaWindowActor
* @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
meta_window_actor_set_visible_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)
{
meta_window_actor_clear_shadow_clip (self);
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);
}
}
}
/**
* meta_window_actor_reset_visible_regions:
* @self: a #MetaWindowActor
*
* Unsets the regions set by meta_window_actor_reset_visible_region() and
*meta_window_actor_reset_visible_region_beneath()
*/
void
meta_window_actor_reset_visible_regions (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
meta_shaped_texture_set_clip_region (META_SHAPED_TEXTURE (priv->actor),
NULL);
meta_window_actor_clear_shadow_clip (self);
}
static gboolean
texture_pixmap_using_extension (ClutterX11TexturePixmap *texture)
{
ClutterTexture *self = CLUTTER_TEXTURE (texture);
CoglHandle handle;
handle = clutter_texture_get_cogl_texture (self);
return handle != NULL &&
cogl_is_texture_pixmap_x11 (handle) &&
cogl_texture_pixmap_x11_is_using_tfp_extension (handle);
}
static void
check_needs_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);
MetaCompositor *compositor;
Window xwindow = priv->xwindow;
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;
compositor = meta_display_get_compositor (display);
if (priv->size_changed)
{
meta_window_actor_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) != 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);
meta_window_actor_update_bounding_region_and_borders (self, 0, 0);
return;
}
if (compositor->no_mipmaps)
meta_shaped_texture_set_create_mipmaps (META_SHAPED_TEXTURE (priv->actor),
FALSE);
clutter_x11_texture_pixmap_set_pixmap
(CLUTTER_X11_TEXTURE_PIXMAP (priv->actor),
priv->back_pixmap);
/*
* This only works *after* actually setting the pixmap, so we have to
* do it here.
* See: http://bugzilla.clutter-project.org/show_bug.cgi?id=2236
*/
if (G_UNLIKELY (!texture_pixmap_using_extension (CLUTTER_X11_TEXTURE_PIXMAP (priv->actor))))
g_warning ("NOTE: Not using GLX TFP!\n");
g_object_get (priv->actor,
"pixmap-width", &pxm_width,
"pixmap-height", &pxm_height,
NULL);
meta_window_actor_update_bounding_region_and_borders (self, pxm_width, pxm_height);
}
meta_error_trap_pop (display);
priv->needs_pixmap = FALSE;
}
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)
{
if (priv->shape_region)
priv->shadow_shape = meta_window_shape_new (priv->shape_region);
else if (priv->bounding_region)
priv->shadow_shape = meta_window_shape_new (priv->bounding_region);
}
if (priv->shadow_shape != NULL)
{
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);
}
static gboolean
is_frozen (MetaWindowActor *self)
{
return self->priv->freeze_count ? TRUE : FALSE;
}
void
meta_window_actor_process_damage (MetaWindowActor *self,
XDamageNotifyEvent *event)
{
MetaWindowActorPrivate *priv = self->priv;
ClutterX11TexturePixmap *texture_x11 = CLUTTER_X11_TEXTURE_PIXMAP (priv->actor);
priv->received_damage = TRUE;
/* Drop damage event for unredirected windows */
if (self->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;
}
clutter_x11_texture_pixmap_update_area (texture_x11,
event->area.x,
event->area.y,
event->area.width,
event->area.height);
}
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 inline void
set_integral_bounding_rect (cairo_rectangle_int_t *rect,
double x, double y,
double width, double height)
{
rect->x = floor(x);
rect->y = floor(y);
rect->width = ceil(x + width) - rect->x;
rect->height = ceil(y + height) - rect->y;
}
static void
update_corners (MetaWindowActor *self,
MetaFrameBorders *borders)
{
MetaWindowActorPrivate *priv = self->priv;
MetaRectangle outer;
cairo_rectangle_int_t corner_rects[4];
cairo_region_t *corner_region;
cairo_path_t *corner_path;
float top_left, top_right, bottom_left, bottom_right;
float x, y;
/* need these to build a path */
cairo_t *cr;
cairo_surface_t *surface;
if (!priv->window->frame)
return;
meta_window_get_outer_rect (priv->window, &outer);
meta_frame_get_corner_radiuses (priv->window->frame,
&top_left,
&top_right,
&bottom_left,
&bottom_right);
/* Unfortunately, cairo does not allow us to create a context
* without a surface. Create a 0x0 image surface to "paint to"
* so we can get the path. */
surface = cairo_image_surface_create (CAIRO_FORMAT_A8,
0, 0);
cr = cairo_create (surface);
/* top left */
x = borders->invisible.left;
y = borders->invisible.top;
set_integral_bounding_rect (&corner_rects[0],
x, y, top_left, top_left);
cairo_arc (cr,
x + top_left,
y + top_left,
top_left,
0, M_PI*2);
/* top right */
x = borders->invisible.left + outer.width - top_right;
y = borders->invisible.top;
set_integral_bounding_rect (&corner_rects[1],
x, y, top_right, top_right);
cairo_arc (cr,
x,
y + top_right,
top_right,
0, M_PI*2);
/* bottom right */
x = borders->invisible.left + outer.width - bottom_right;
y = borders->invisible.top + outer.height - bottom_right;
set_integral_bounding_rect (&corner_rects[2],
x, y, bottom_right, bottom_right);
cairo_arc (cr,
x,
y,
bottom_right,
0, M_PI*2);
/* bottom left */
x = borders->invisible.left;
y = borders->invisible.top + outer.height - bottom_left;
set_integral_bounding_rect (&corner_rects[3],
x, y, bottom_left, bottom_left);
cairo_arc (cr,
x + bottom_left,
y,
bottom_left,
0, M_PI*2);
corner_path = cairo_copy_path (cr);
cairo_surface_destroy (surface);
cairo_destroy (cr);
corner_region = cairo_region_create_rectangles (corner_rects, 4);
meta_shaped_texture_set_overlay_path (META_SHAPED_TEXTURE (priv->actor),
corner_region, corner_path);
cairo_region_destroy (corner_region);
}
static void
check_needs_reshape (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
MetaScreen *screen = priv->screen;
MetaDisplay *display = meta_screen_get_display (screen);
MetaFrameBorders borders;
cairo_region_t *region;
if (!priv->needs_reshape)
return;
meta_shaped_texture_set_shape_region (META_SHAPED_TEXTURE (priv->actor), NULL);
meta_window_actor_clear_shape_region (self);
if (priv->window->frame)
meta_frame_calc_borders (priv->window->frame, &borders);
else
meta_frame_borders_clear (&borders);
region = meta_window_get_frame_bounds (priv->window);
if (region != NULL)
{
/* This returns the window's internal frame bounds region,
* so we need to copy it because we modify it below. */
region = cairo_region_copy (region);
}
else
{
/* If we have no region, we have no frame. We have no frame,
* so just use the bounding region instead */
region = cairo_region_copy (priv->bounding_region);
}
#ifdef HAVE_SHAPE
if (priv->window->has_shape)
{
Display *xdisplay = meta_display_get_xdisplay (display);
XRectangle *rects;
int n_rects, ordering;
cairo_rectangle_int_t client_area;
client_area.width = priv->window->rect.width;
client_area.height = priv->window->rect.height;
if (priv->window->frame)
{
client_area.x = borders.total.left;
client_area.y = borders.total.top;
}
else
{
client_area.x = 0;
client_area.y = 0;
}
/* Punch out client area. */
cairo_region_subtract_rectangle (region, &client_area);
meta_error_trap_push (display);
rects = XShapeGetRectangles (xdisplay,
priv->window->xwindow,
ShapeBounding,
&n_rects,
&ordering);
meta_error_trap_pop (display);
if (rects)
{
int i;
for (i = 0; i < n_rects; i ++)
{
cairo_rectangle_int_t rect = { rects[i].x + client_area.x,
rects[i].y + client_area.y,
rects[i].width,
rects[i].height };
cairo_region_union_rectangle (region, &rect);
}
XFree (rects);
}
}
#endif
meta_shaped_texture_set_shape_region (META_SHAPED_TEXTURE (priv->actor),
region);
meta_window_actor_update_shape_region (self, region);
cairo_region_destroy (region);
update_corners (self, &borders);
priv->needs_reshape = FALSE;
meta_window_actor_invalidate_shadow (self);
}
void
meta_window_actor_update_shape (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
priv->needs_reshape = TRUE;
if (priv->shadow_shape != NULL)
{
meta_window_shape_unref (priv->shadow_shape);
priv->shadow_shape = NULL;
}
clutter_actor_queue_redraw (priv->actor);
}
void
meta_window_actor_pre_paint (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 (priv->received_damage && !self->priv->unredirected)
{
meta_error_trap_push (display);
XDamageSubtract (xdisplay, priv->damage, None, None);
meta_error_trap_pop (display);
priv->received_damage = FALSE;
}
check_needs_pixmap (self);
check_needs_reshape (self);
check_needs_shadow (self);
}
void
meta_window_actor_invalidate_shadow (MetaWindowActor *self)
{
MetaWindowActorPrivate *priv = self->priv;
priv->recompute_focused_shadow = TRUE;
priv->recompute_unfocused_shadow = TRUE;
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 (self->priv->actor, opacity);
}
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