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mutter-performance-source/src/core/compositor.c
Iain Holmes e629364582 Allow shaped windows _with frames_ to have shadows. 
2008-03-18  Iain Holmes  <iain@gnome.org>

        * src/core/compositor.c (window_has_shadow): Allow shaped 
windows
        _with frames_ to have shadows.
        (meta_compositor_set_active_window): Watch for the focus of 
windows
        and change the size of the drop shadows.
        (generate_shadows): Create differently sized shadows.
        (meta_compositor_get_window_pixmap): Get the xwindow correctly.

        * src/core/window.c (meta_window_notify_focus): Set the active 
window
        in the compositor.


svn path=/trunk/; revision=3653
2008-03-18 23:42:20 +00:00

2844 lines
75 KiB
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2007 Iain Holmes
* Based on xcompmgr - (c) 2003 Keith Packard
* xfwm4 - (c) 2005-2007 Olivier Fourdan
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#define _GNU_SOURCE
#define _XOPEN_SOURCE 500 /* for usleep() */
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <unistd.h>
#include <gdk/gdk.h>
#include "display.h"
#include "screen.h"
#include "frame.h"
#include "errors.h"
#include "compositor.h"
#include "xprops.h"
#include <X11/Xatom.h>
#include <X11/extensions/shape.h>
#include <X11/extensions/Xcomposite.h>
#include <X11/extensions/Xdamage.h>
#include <X11/extensions/Xfixes.h>
#include <X11/extensions/Xrender.h>
#if COMPOSITE_MAJOR > 0 || COMPOSITE_MINOR >= 2
#define HAVE_NAME_WINDOW_PIXMAP 1
#endif
#if COMPOSITE_MAJOR > 0 || COMPOSITE_MINOR >= 3
#define HAVE_COW 1
#else
/* Don't have a cow man...HAAHAAHAA */
#endif
#define USE_IDLE_REPAINT 1
#ifdef HAVE_COMPOSITE_EXTENSIONS
static inline gboolean
composite_at_least_version (MetaDisplay *display,
int maj, int minor)
{
return (display->composite_major_version > maj
|| (display->composite_major_version == maj
&& display->composite_minor_version >= minor));
}
#define have_name_window_pixmap(display) \
composite_at_least_version (display, 0, 2)
#define have_cow(display) \
composite_at_least_version (display, 0, 3)
#endif
typedef enum _MetaCompWindowType
{
META_COMP_WINDOW_NORMAL,
META_COMP_WINDOW_DND,
META_COMP_WINDOW_DESKTOP,
META_COMP_WINDOW_DOCK
} MetaCompWindowType;
typedef enum _MetaShadowType
{
META_SHADOW_SMALL,
META_SHADOW_MEDIUM,
META_SHADOW_LARGE,
LAST_SHADOW_TYPE
} MetaShadowType;
struct _MetaCompositor
{
MetaDisplay *display;
Atom atom_x_root_pixmap;
Atom atom_x_set_root;
Atom atom_net_wm_window_opacity;
Atom atom_net_wm_window_type_dnd;
#ifdef USE_IDLE_REPAINT
guint repaint_id;
#endif
guint enabled : 1;
guint show_redraw : 1;
guint debug : 1;
};
typedef struct _conv
{
int size;
double *data;
} conv;
typedef struct _shadow
{
conv *gaussian_map;
guchar *shadow_corner;
guchar *shadow_top;
} shadow;
typedef struct _MetaCompScreen
{
MetaScreen *screen;
GList *windows;
GHashTable *windows_by_xid;
MetaWindow *focus_window;
Window output;
gboolean have_shadows;
shadow *shadows[LAST_SHADOW_TYPE];
Picture root_picture;
Picture root_buffer;
Picture black_picture;
Picture trans_black_picture;
Picture root_tile;
XserverRegion all_damage;
guint overlays;
gboolean compositor_active;
gboolean clip_changed;
GSList *dock_windows;
} MetaCompScreen;
typedef struct _MetaCompWindow
{
MetaScreen *screen;
MetaWindow *window; /* May be NULL if this window isn't managed by Metacity */
Window id;
XWindowAttributes attrs;
#ifdef HAVE_NAME_WINDOW_PIXMAP
Pixmap back_pixmap;
/* When the window is shaded back_pixmap will be replaced with the pixmap
for the shaded window. This is a copy of the original unshaded window
so that we can still see what the window looked like when it is needed
for the _get_window_pixmap function */
Pixmap shaded_back_pixmap;
#endif
int mode;
gboolean damaged;
gboolean shaped;
MetaCompWindowType type;
Damage damage;
Picture picture;
Picture alpha_pict;
gboolean needs_shadow;
MetaShadowType shadow_type;
Picture shadow_pict;
XserverRegion border_size;
XserverRegion extents;
Picture shadow;
int shadow_dx;
int shadow_dy;
int shadow_width;
int shadow_height;
guint opacity;
XserverRegion border_clip;
gboolean updates_frozen;
gboolean update_pending;
} MetaCompWindow;
#define OPAQUE 0xffffffff
#define WINDOW_SOLID 0
#define WINDOW_ARGB 1
#define SHADOW_SMALL_RADIUS 3.0
#define SHADOW_MEDIUM_RADIUS 6.0
#define SHADOW_LARGE_RADIUS 12.0
#define SHADOW_SMALL_OFFSET_X (SHADOW_SMALL_RADIUS * -3 / 2)
#define SHADOW_SMALL_OFFSET_Y (SHADOW_SMALL_RADIUS * -3 / 2)
#define SHADOW_MEDIUM_OFFSET_X (SHADOW_MEDIUM_RADIUS * -3 / 2)
#define SHADOW_MEDIUM_OFFSET_Y (SHADOW_MEDIUM_RADIUS * -5 / 4)
#define SHADOW_LARGE_OFFSET_X -15
#define SHADOW_LARGE_OFFSET_Y -15
#define SHADOW_OPACITY 0.66
#define TRANS_OPACITY 0.75
/* Gaussian stuff for creating the shadows */
static double
gaussian (double r,
double x,
double y)
{
return ((1 / (sqrt (2 * G_PI * r))) *
exp ((- (x * x + y * y)) / (2 * r * r)));
}
static conv *
make_gaussian_map (double r)
{
conv *c;
int size, centre;
int x, y;
double t, g;
size = ((int) ceil ((r * 3)) + 1) & ~1;
centre = size / 2;
c = g_malloc (sizeof (conv) + size * size * sizeof (double));
c->size = size;
c->data = (double *) (c + 1);
t = 0.0;
for (y = 0; y < size; y++)
{
for (x = 0; x < size; x++)
{
g = gaussian (r, (double) (x - centre), (double) (y - centre));
t += g;
c->data[y * size + x] = g;
}
}
for (y = 0; y < size; y++)
{
for (x = 0; x < size; x++)
{
c->data[y * size + x] /= t;
}
}
return c;
}
static void
dump_xserver_region (const char *location,
MetaDisplay *display,
XserverRegion region)
{
MetaCompositor *compositor = display->compositor;
Display *dpy = display->xdisplay;
int nrects;
XRectangle *rects;
XRectangle bounds;
if (!compositor->debug)
return;
if (region)
{
rects = XFixesFetchRegionAndBounds (dpy, region, &nrects, &bounds);
if (nrects > 0)
{
int i;
fprintf (stderr, "%s (XSR): %d rects, bounds: %d,%d (%d,%d)\n",
location, nrects, bounds.x, bounds.y, bounds.width, bounds.height);
for (i = 1; i < nrects; i++)
fprintf (stderr, "\t%d,%d (%d,%d)\n",
rects[i].x, rects[i].y, rects[i].width, rects[i].height);
}
else
fprintf (stderr, "%s (XSR): empty\n", location);
XFree (rects);
}
else
fprintf (stderr, "%s (XSR): null\n", location);
}
/*
* A picture will help
*
* -center 0 width width+center
* -center +-----+-------------------+-----+
* | | | |
* | | | |
* 0 +-----+-------------------+-----+
* | | | |
* | | | |
* | | | |
* height +-----+-------------------+-----+
* | | | |
* height+ | | | |
* center +-----+-------------------+-----+
*/
static guchar
sum_gaussian (conv *map,
double opacity,
int x,
int y,
int width,
int height)
{
double *g_data, *g_line;
double v;
int fx, fy;
int fx_start, fx_end;
int fy_start, fy_end;
int g_size, centre;
g_line = map->data;
g_size = map->size;
centre = g_size / 2;
fx_start = centre - x;
if (fx_start < 0)
fx_start = 0;
fx_end = width + centre - x;
if (fx_end > g_size)
fx_end = g_size;
fy_start = centre - y;
if (fy_start < 0)
fy_start = 0;
fy_end = height + centre - y;
if (fy_end > g_size)
fy_end = g_size;
g_line = g_line + fy_start * g_size + fx_start;
v = 0.0;
for (fy = fy_start; fy < fy_end; fy++)
{
g_data = g_line;
g_line += g_size;
for (fx = fx_start; fx < fx_end; fx++)
v += *g_data++;
}
if (v > 1.0)
v = 1.0;
return ((guchar) (v * opacity * 255.0));
}
/* precompute shadow corners and sides to save time for large windows */
static void
presum_gaussian (shadow *shad)
{
int centre;
int opacity, x, y;
int msize;
conv *map;
map = shad->gaussian_map;
msize = map->size;
centre = map->size / 2;
if (shad->shadow_corner)
g_free (shad->shadow_corner);
if (shad->shadow_top)
g_free (shad->shadow_top);
shad->shadow_corner = (guchar *)(g_malloc ((msize + 1) * (msize + 1) * 26));
shad->shadow_top = (guchar *) (g_malloc ((msize + 1) * 26));
for (x = 0; x <= msize; x++)
{
shad->shadow_top[25 * (msize + 1) + x] =
sum_gaussian (map, 1, x - centre, centre, msize * 2, msize * 2);
for (opacity = 0; opacity < 25; opacity++)
{
shad->shadow_top[opacity * (msize + 1) + x] =
shad->shadow_top[25 * (msize + 1) + x] * opacity / 25;
}
for (y = 0; y <= x; y++)
{
shad->shadow_corner[25 * (msize + 1) * (msize + 1)
+ y * (msize + 1)
+ x]
= sum_gaussian (map, 1, x - centre, y - centre,
msize * 2, msize * 2);
shad->shadow_corner[25 * (msize + 1) * (msize + 1)
+ x * (msize + 1) + y] =
shad->shadow_corner[25 * (msize + 1) * (msize + 1)
+ y * (msize + 1) + x];
for (opacity = 0; opacity < 25; opacity++)
{
shad->shadow_corner[opacity * (msize + 1) * (msize + 1)
+ y * (msize + 1) + x]
= shad->shadow_corner[opacity * (msize + 1) * (msize + 1)
+ x * (msize + 1) + y]
= shad->shadow_corner[25 * (msize + 1) * (msize + 1)
+ y * (msize + 1) + x] * opacity / 25;
}
}
}
}
static void
generate_shadows (MetaCompScreen *info)
{
double radii[LAST_SHADOW_TYPE] = {SHADOW_SMALL_RADIUS,
SHADOW_MEDIUM_RADIUS,
SHADOW_LARGE_RADIUS};
int i;
for (i = 0; i < LAST_SHADOW_TYPE; i++) {
shadow *shad = g_new0 (shadow, 1);
shad->gaussian_map = make_gaussian_map (radii[i]);
presum_gaussian (shad);
info->shadows[i] = shad;
}
}
static XImage *
make_shadow (MetaDisplay *display,
MetaScreen *screen,
MetaShadowType shadow_type,
double opacity,
int width,
int height)
{
MetaCompScreen *info = screen->compositor_data;
XImage *ximage;
guchar *data;
shadow *shad = info->shadows[shadow_type];
int msize = shad->gaussian_map->size;
int ylimit, xlimit;
int swidth = width + msize;
int sheight = height + msize;
int centre = msize / 2;
int x, y;
guchar d;
int x_diff;
int opacity_int = (int)(opacity * 25);
data = g_malloc (swidth * sheight * sizeof (guchar));
ximage = XCreateImage (display->xdisplay,
DefaultVisual (display->xdisplay, screen->number),
8, ZPixmap, 0, (char *) data,
swidth, sheight, 8, swidth * sizeof (guchar));
if (!ximage)
{
g_free (data);
return NULL;
}
/*
* Build the gaussian in sections
*/
/*
* centre (fill the complete data array
*/
if (msize > 0)
d = shad->shadow_top[opacity_int * (msize + 1) + msize];
else
d = sum_gaussian (shad->gaussian_map, opacity, centre,
centre, width, height);
memset (data, d, sheight * swidth);
/*
* corners
*/
ylimit = msize;
if (ylimit > sheight / 2)
ylimit = (sheight + 1) / 2;
xlimit = msize;
if (xlimit > swidth / 2)
xlimit = (swidth + 1) / 2;
for (y = 0; y < ylimit; y++)
{
for (x = 0; x < xlimit; x++)
{
if (xlimit == msize && ylimit == msize)
d = shad->shadow_corner[opacity_int * (msize + 1) * (msize + 1) + y * (msize + 1) + x];
else
d = sum_gaussian (shad->gaussian_map, opacity, x - centre,
y - centre, width, height);
data[y * swidth + x] = d;
data[(sheight - y - 1) * swidth + x] = d;
data[(sheight - y - 1) * swidth + (swidth - x - 1)] = d;
data[y * swidth + (swidth - x - 1)] = d;
}
}
/* top/bottom */
x_diff = swidth - (msize * 2);
if (x_diff > 0 && ylimit > 0)
{
for (y = 0; y < ylimit; y++)
{
if (ylimit == msize)
d = shad->shadow_top[opacity_int * (msize + 1) + y];
else
d = sum_gaussian (shad->gaussian_map, opacity, centre,
y - centre, width, height);
memset (&data[y * swidth + msize], d, x_diff);
memset (&data[(sheight - y - 1) * swidth + msize], d, x_diff);
}
}
/*
* sides
*/
for (x = 0; x < xlimit; x++)
{
if (xlimit == msize)
d = shad->shadow_top[opacity_int * (msize + 1) + x];
else
d = sum_gaussian (shad->gaussian_map, opacity, x - centre,
centre, width, height);
for (y = msize; y < sheight - msize; y++)
{
data[y * swidth + x] = d;
data[y * swidth + (swidth - x - 1)] = d;
}
}
return ximage;
}
static Picture
shadow_picture (MetaDisplay *display,
MetaScreen *screen,
MetaShadowType shadow_type,
double opacity,
Picture alpha_pict,
int width,
int height,
int *wp,
int *hp)
{
XImage *shadow_image;
Pixmap shadow_pixmap;
Picture shadow_picture;
GC gc;
shadow_image = make_shadow (display, screen, shadow_type,
opacity, width, height);
if (!shadow_image)
return None;
shadow_pixmap = XCreatePixmap (display->xdisplay, screen->xroot,
shadow_image->width, shadow_image->height, 8);
if (!shadow_pixmap)
{
XDestroyImage (shadow_image);
return None;
}
shadow_picture = XRenderCreatePicture (display->xdisplay, shadow_pixmap,
XRenderFindStandardFormat (display->xdisplay, PictStandardA8),
0, 0);
if (!shadow_picture)
{
XDestroyImage (shadow_image);
XFreePixmap (display->xdisplay, shadow_pixmap);
return None;
}
gc = XCreateGC (display->xdisplay, shadow_pixmap, 0, 0);
if (!gc)
{
XDestroyImage (shadow_image);
XFreePixmap (display->xdisplay, shadow_pixmap);
XRenderFreePicture (display->xdisplay, shadow_picture);
return None;
}
XPutImage (display->xdisplay, shadow_pixmap, gc, shadow_image, 0, 0, 0, 0,
shadow_image->width, shadow_image->height);
*wp = shadow_image->width;
*hp = shadow_image->height;
XFreeGC (display->xdisplay, gc);
XDestroyImage (shadow_image);
XFreePixmap (display->xdisplay, shadow_pixmap);
return shadow_picture;
}
static MetaCompWindow *
find_window_for_screen (MetaScreen *screen,
Window xwindow)
{
MetaCompScreen *info = screen->compositor_data;
if (info == NULL)
return NULL;
return g_hash_table_lookup (info->windows_by_xid, (gpointer) xwindow);
}
static MetaCompWindow *
find_window_in_display (MetaDisplay *display,
Window xwindow)
{
GSList *index;
for (index = display->screens; index; index = index->next)
{
MetaCompWindow *cw = find_window_for_screen (index->data, xwindow);
if (cw != NULL)
return cw;
}
return NULL;
}
static Picture
solid_picture (MetaDisplay *display,
MetaScreen *screen,
gboolean argb,
double a,
double r,
double g,
double b)
{
Pixmap pixmap;
Picture picture;
XRenderPictureAttributes pa;
XRenderPictFormat *render_format;
XRenderColor c;
render_format = XRenderFindStandardFormat (display->xdisplay,
argb ? PictStandardARGB32 : PictStandardA8);
pixmap = XCreatePixmap (display->xdisplay, screen->xroot,
1, 1, argb ? 32 : 8);
g_return_val_if_fail (pixmap != None, None);
pa.repeat = TRUE;
picture = XRenderCreatePicture (display->xdisplay, pixmap, render_format,
CPRepeat, &pa);
if (picture == None)
{
XFreePixmap (display->xdisplay, pixmap);
g_warning ("(picture != None) failed");
return None;
}
c.alpha = a * 0xffff;
c.red = r * 0xffff;
c.green = g * 0xffff;
c.blue = b * 0xffff;
XRenderFillRectangle (display->xdisplay, PictOpSrc, picture, &c, 0, 0, 1, 1);
XFreePixmap (display->xdisplay, pixmap);
return picture;
}
static Picture
root_tile (MetaScreen *screen)
{
MetaDisplay *display = screen->display;
Picture picture;
Pixmap pixmap;
gboolean fill = FALSE;
XRenderPictureAttributes pa;
XRenderPictFormat *format;
int p;
Atom background_atoms[2];
Atom pixmap_atom;
pixmap = None;
background_atoms[0] = display->compositor->atom_x_root_pixmap;
background_atoms[1] = display->compositor->atom_x_set_root;
pixmap_atom = XInternAtom (display->xdisplay, "PIXMAP", False);
for (p = 0; p < 2; p++)
{
Atom actual_type;
int actual_format;
gulong nitems, bytes_after;
guchar *prop;
if (XGetWindowProperty (display->xdisplay, screen->xroot,
background_atoms[p],
0, 4, FALSE, AnyPropertyType,
&actual_type, &actual_format,
&nitems, &bytes_after, &prop) == Success)
{
if (actual_type == pixmap_atom &&
actual_format == 32 &&
nitems == 1)
{
memcpy (&pixmap, prop, 4);
XFree (prop);
fill = FALSE;
break;
}
}
}
if (!pixmap)
{
pixmap = XCreatePixmap (display->xdisplay, screen->xroot, 1, 1,
DefaultDepth (display->xdisplay, screen->number));
g_return_val_if_fail (pixmap != None, None);
fill = TRUE;
}
pa.repeat = TRUE;
format = XRenderFindVisualFormat (display->xdisplay,
DefaultVisual (display->xdisplay,
screen->number));
g_return_val_if_fail (format != NULL, None);
picture = XRenderCreatePicture (display->xdisplay, pixmap, format,
CPRepeat, &pa);
if ((picture != None) && (fill))
{
XRenderColor c;
/* Background default to just plain ugly grey */
c.red = 0x8080;
c.green = 0x8080;
c.blue = 0x8080;
c.alpha = 0xffff;
XRenderFillRectangle (display->xdisplay, PictOpSrc, picture,
&c, 0, 0, 1, 1);
XFreePixmap (display->xdisplay, pixmap);
}
return picture;
}
static Picture
create_root_buffer (MetaScreen *screen)
{
MetaDisplay *display = screen->display;
MetaCompScreen *info = screen->compositor_data;
Picture pict;
XRenderPictFormat *format;
Pixmap root_pixmap;
Visual *visual;
int depth, screen_width, screen_height, screen_number;
screen_width = screen->rect.width;
screen_height = screen->rect.height;
screen_number = screen->number;
visual = DefaultVisual (display->xdisplay, screen_number);
depth = DefaultDepth (display->xdisplay, screen_number);
format = XRenderFindVisualFormat (display->xdisplay, visual);
g_return_val_if_fail (format != NULL, None);
root_pixmap = XCreatePixmap (display->xdisplay,
info->output,
screen_width, screen_height, depth);
g_return_val_if_fail (root_pixmap != None, None);
pict = XRenderCreatePicture (display->xdisplay, root_pixmap, format, 0, NULL);
XFreePixmap (display->xdisplay, root_pixmap);
return pict;
}
static void
paint_root (MetaScreen *screen,
Picture root_buffer)
{
MetaDisplay *display = screen->display;
MetaCompScreen *info = screen->compositor_data;
g_return_if_fail (root_buffer != None);
if (info->root_tile == None)
{
info->root_tile = root_tile (screen);
g_return_if_fail (info->root_tile != None);
}
XRenderComposite (display->xdisplay, PictOpSrc,
info->root_tile, None, root_buffer,
0, 0, 0, 0, 0, 0,
screen->rect.width, screen->rect.height);
}
static gboolean
window_has_shadow (MetaCompWindow *cw)
{
if (((MetaCompScreen *)cw->screen->compositor_data)->have_shadows == FALSE)
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 (cw->window)
{
if (cw->window->frame) {
meta_verbose ("Window has shadow because it has a frame\n");
return TRUE;
}
}
/* Never put a shadow around shaped windows */
if (cw->shaped) {
meta_verbose ("Window has no shadow as it is shaped\n");
return FALSE;
}
/* Don't put shadow around DND icon windows */
if (cw->type == META_COMP_WINDOW_DND ||
cw->type == META_COMP_WINDOW_DESKTOP) {
meta_verbose ("Window has no shadow as it is DND or Desktop\n");
return FALSE;
}
if (cw->mode != WINDOW_ARGB) {
meta_verbose ("Window has shadow as it is not ARGB\n");
return TRUE;
}
meta_verbose ("Window has no shadow as it fell through\n");
return FALSE;
}
double shadow_offsets_x[LAST_SHADOW_TYPE] = {SHADOW_SMALL_OFFSET_X,
SHADOW_MEDIUM_OFFSET_X,
SHADOW_LARGE_OFFSET_X};
double shadow_offsets_y[LAST_SHADOW_TYPE] = {SHADOW_SMALL_OFFSET_Y,
SHADOW_MEDIUM_OFFSET_Y,
SHADOW_LARGE_OFFSET_Y};
static XserverRegion
win_extents (MetaCompWindow *cw)
{
MetaDisplay *display;
MetaScreen *screen;
MetaCompScreen *info;
XRectangle r;
screen = cw->screen;
display = screen->display;
info = screen->compositor_data;
r.x = cw->attrs.x;
r.y = cw->attrs.y;
r.width = cw->attrs.width + cw->attrs.border_width * 2;
r.height = cw->attrs.height + cw->attrs.border_width * 2;
if (cw->needs_shadow)
{
XRectangle sr;
cw->shadow_dx = shadow_offsets_x [cw->shadow_type];
cw->shadow_dy = shadow_offsets_y [cw->shadow_type];
if (!cw->shadow)
{
double opacity = SHADOW_OPACITY;
if (cw->opacity != (guint) OPAQUE)
opacity = opacity * ((double) cw->opacity) / ((double) OPAQUE);
cw->shadow = shadow_picture (display, screen, cw->shadow_type,
opacity, cw->alpha_pict,
cw->attrs.width + cw->attrs.border_width * 2,
cw->attrs.height + cw->attrs.border_width * 2,
&cw->shadow_width, &cw->shadow_height);
}
sr.x = cw->attrs.x + cw->shadow_dx;
sr.y = cw->attrs.y + cw->shadow_dy;
sr.width = cw->shadow_width;
sr.height = cw->shadow_height;
if (sr.x < r.x)
{
r.width = (r.x + r.width) - sr.x;
r.x = sr.x;
}
if (sr.y < r.y)
{
r.height = (r.y + r.height) - sr.y;
r.y = sr.y;
}
if (sr.x + sr.width > r.x + r.width)
r.width = sr.x + sr.width - r.x;
if (sr.y + sr.height > r.y + r.height)
r.height = sr.y + sr.height - r.y;
}
return XFixesCreateRegion (display->xdisplay, &r, 1);
}
static XserverRegion
border_size (MetaCompWindow *cw)
{
MetaScreen *screen = cw->screen;
MetaDisplay *display = screen->display;
XserverRegion border;
meta_error_trap_push (display);
border = XFixesCreateRegionFromWindow (display->xdisplay, cw->id,
WindowRegionBounding);
meta_error_trap_pop (display, FALSE);
g_return_val_if_fail (border != None, None);
XFixesTranslateRegion (display->xdisplay, border,
cw->attrs.x + cw->attrs.border_width,
cw->attrs.y + cw->attrs.border_width);
return border;
}
static XRenderPictFormat *
get_window_format (MetaCompWindow *cw)
{
MetaScreen *screen = cw->screen;
MetaDisplay *display = screen->display;
XRenderPictFormat *format;
format = XRenderFindVisualFormat (display->xdisplay, cw->attrs.visual);
if (!format)
format = XRenderFindVisualFormat (display->xdisplay,
DefaultVisual (display->xdisplay,
screen->number));
return format;
}
static Picture
get_window_picture (MetaCompWindow *cw)
{
MetaScreen *screen = cw->screen;
MetaDisplay *display = screen->display;
XRenderPictureAttributes pa;
XRenderPictFormat *format;
Drawable draw;
draw = cw->id;
meta_error_trap_push (display);
#ifdef HAVE_NAME_WINDOW_PIXMAP
if (have_name_window_pixmap (display))
{
if (cw->back_pixmap == None)
cw->back_pixmap = XCompositeNameWindowPixmap (display->xdisplay, cw->id);
if (cw->back_pixmap != None)
draw = cw->back_pixmap;
}
#endif
format = get_window_format (cw);
if (format)
{
Picture pict;
pa.subwindow_mode = IncludeInferiors;
pict = XRenderCreatePicture (display->xdisplay, draw,
format, CPSubwindowMode, &pa);
meta_error_trap_pop (display, FALSE);
return pict;
}
meta_error_trap_pop (display, FALSE);
return None;
}
static void
paint_dock_shadows (MetaScreen *screen,
Picture root_buffer,
XserverRegion region)
{
MetaDisplay *display = screen->display;
Display *xdisplay = display->xdisplay;
MetaCompScreen *info = screen->compositor_data;
GSList *d;
for (d = info->dock_windows; d; d = d->next)
{
MetaCompWindow *cw = d->data;
XserverRegion shadow_clip;
if (cw->shadow)
{
shadow_clip = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesIntersectRegion (xdisplay, shadow_clip,
cw->border_clip, region);
XFixesSetPictureClipRegion (xdisplay, root_buffer, 0, 0, shadow_clip);
XRenderComposite (xdisplay, PictOpOver, info->black_picture,
cw->shadow, root_buffer,
0, 0, 0, 0,
cw->attrs.x + cw->shadow_dx,
cw->attrs.y + cw->shadow_dy,
cw->shadow_width, cw->shadow_height);
XFixesDestroyRegion (xdisplay, shadow_clip);
}
}
}
static void
paint_windows (MetaScreen *screen,
GList *windows,
Picture root_buffer,
XserverRegion region)
{
MetaDisplay *display = screen->display;
MetaCompScreen *info = screen->compositor_data;
Display *xdisplay = display->xdisplay;
GList *index, *last;
int screen_width, screen_height, screen_number;
Window xroot;
MetaCompWindow *cw;
XserverRegion paint_region, desktop_region;
screen_width = screen->rect.width;
screen_height = screen->rect.height;
screen_number = screen->number;
xroot = screen->xroot;
if (region == None)
{
XRectangle r;
r.x = 0;
r.y = 0;
r.width = screen_width;
r.height = screen_height;
paint_region = XFixesCreateRegion (xdisplay, &r, 1);
}
else
{
paint_region = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesCopyRegion (xdisplay, paint_region, region);
}
desktop_region = None;
/*
* Painting from top to bottom, reducing the clipping area at
* each iteration. Only the opaque windows are painted 1st.
*/
last = NULL;
for (index = windows; index; index = index->next)
{
/* Store the last window we dealt with */
last = index;
cw = (MetaCompWindow *) index->data;
if (!cw->damaged)
{
/* Not damaged */
continue;
}
#if 0
if ((cw->attrs.x + cw->attrs.width < 1) ||
(cw->attrs.y + cw->attrs.height < 1) ||
(cw->attrs.x >= screen_width) || (cw->attrs.y >= screen_height))
{
/* Off screen */
continue;
}
#endif
if (cw->picture == None)
cw->picture = get_window_picture (cw);
/* If the clip region of the screen has been changed
then we need to recreate the extents of the window */
if (info->clip_changed)
{
if (cw->border_size)
{
XFixesDestroyRegion (xdisplay, cw->border_size);
cw->border_size = None;
}
#if 0
if (cw->extents)
{
XFixesDestroyRegion (xdisplay, cw->extents);
cw->extents = None;
}
#endif
}
if (cw->border_size == None)
cw->border_size = border_size (cw);
if (cw->extents == None)
cw->extents = win_extents (cw);
if (cw->mode == WINDOW_SOLID)
{
int x, y, wid, hei;
#ifdef HAVE_NAME_WINDOW_PIXMAP
if (have_name_window_pixmap (display))
{
x = cw->attrs.x;
y = cw->attrs.y;
wid = cw->attrs.width + cw->attrs.border_width * 2;
hei = cw->attrs.height + cw->attrs.border_width * 2;
}
else
#endif
{
x = cw->attrs.x + cw->attrs.border_width;
y = cw->attrs.y + cw->attrs.border_width;
wid = cw->attrs.width;
hei = cw->attrs.height;
}
XFixesSetPictureClipRegion (xdisplay, root_buffer,
0, 0, paint_region);
XRenderComposite (xdisplay, PictOpSrc, cw->picture,
None, root_buffer, 0, 0, 0, 0,
x, y, wid, hei);
if (cw->type == META_COMP_WINDOW_DESKTOP)
{
desktop_region = XFixesCreateRegion (xdisplay, 0, 0);
XFixesCopyRegion (xdisplay, desktop_region, paint_region);
}
XFixesSubtractRegion (xdisplay, paint_region,
paint_region, cw->border_size);
}
if (!cw->border_clip)
{
cw->border_clip = XFixesCreateRegion (xdisplay, 0, 0);
XFixesCopyRegion (xdisplay, cw->border_clip, paint_region);
}
}
XFixesSetPictureClipRegion (xdisplay, root_buffer, 0, 0, paint_region);
paint_root (screen, root_buffer);
paint_dock_shadows (screen, root_buffer, desktop_region == None ?
paint_region : desktop_region);
if (desktop_region != None)
XFixesDestroyRegion (xdisplay, desktop_region);
/*
* Painting from bottom to top, translucent windows and shadows are painted
*/
for (index = last; index; index = index->prev)
{
cw = (MetaCompWindow *) index->data;
if (cw->picture)
{
if (cw->shadow && cw->type != META_COMP_WINDOW_DOCK)
{
XserverRegion shadow_clip;
shadow_clip = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesSubtractRegion (xdisplay, shadow_clip, cw->border_clip,
cw->border_size);
XFixesSetPictureClipRegion (xdisplay, root_buffer, 0, 0,
shadow_clip);
XRenderComposite (xdisplay, PictOpOver, info->black_picture,
cw->shadow, root_buffer,
0, 0, 0, 0,
cw->attrs.x + cw->shadow_dx,
cw->attrs.y + cw->shadow_dy,
cw->shadow_width, cw->shadow_height);
if (shadow_clip)
XFixesDestroyRegion (xdisplay, shadow_clip);
}
if ((cw->opacity != (guint) OPAQUE) && !(cw->alpha_pict))
{
cw->alpha_pict = solid_picture (display, screen, FALSE,
(double) cw->opacity / OPAQUE,
0, 0, 0);
}
XFixesIntersectRegion (xdisplay, cw->border_clip, cw->border_clip,
cw->border_size);
XFixesSetPictureClipRegion (xdisplay, root_buffer, 0, 0,
cw->border_clip);
if (cw->mode == WINDOW_ARGB)
{
int x, y, wid, hei;
#ifdef HAVE_NAME_WINDOW_PIXMAP
if (have_name_window_pixmap (display))
{
x = cw->attrs.x;
y = cw->attrs.y;
wid = cw->attrs.width + cw->attrs.border_width * 2;
hei = cw->attrs.height + cw->attrs.border_width * 2;
}
else
#endif
{
x = cw->attrs.x + cw->attrs.border_width;
y = cw->attrs.y + cw->attrs.border_width;
wid = cw->attrs.width;
hei = cw->attrs.height;
}
XRenderComposite (xdisplay, PictOpOver, cw->picture,
cw->alpha_pict, root_buffer, 0, 0, 0, 0,
x, y, wid, hei);
}
}
if (cw->border_clip)
{
XFixesDestroyRegion (xdisplay, cw->border_clip);
cw->border_clip = None;
}
}
XFixesDestroyRegion (xdisplay, paint_region);
}
static void
paint_all (MetaScreen *screen,
XserverRegion region)
{
MetaCompScreen *info = screen->compositor_data;
Display *xdisplay = screen->display->xdisplay;
int screen_width, screen_height;
/* Set clipping to the given region */
XFixesSetPictureClipRegion (xdisplay, info->root_picture, 0, 0, region);
screen_width = screen->rect.width;
screen_height = screen->rect.height;
if (screen->display->compositor->show_redraw)
{
Picture overlay;
dump_xserver_region ("paint_all", screen->display, region);
/* Make a random colour overlay */
overlay = solid_picture (screen->display, screen, TRUE, 1, /* 0.3, alpha */
((double) (rand () % 100)) / 100.0,
((double) (rand () % 100)) / 100.0,
((double) (rand () % 100)) / 100.0);
XRenderComposite (xdisplay, PictOpOver, overlay, None, info->root_picture,
0, 0, 0, 0, 0, 0, screen_width, screen_height);
XRenderFreePicture (xdisplay, overlay);
XFlush (xdisplay);
usleep (100 * 1000);
}
if (info->root_buffer == None)
info->root_buffer = create_root_buffer (screen);
paint_windows (screen, info->windows, info->root_buffer, region);
XFixesSetPictureClipRegion (xdisplay, info->root_buffer, 0, 0, region);
XRenderComposite (xdisplay, PictOpSrc, info->root_buffer, None,
info->root_picture, 0, 0, 0, 0, 0, 0,
screen_width, screen_height);
}
static void
repair_screen (MetaScreen *screen)
{
MetaCompScreen *info = screen->compositor_data;
MetaDisplay *display = screen->display;
if (info->all_damage != None)
{
meta_error_trap_push (display);
paint_all (screen, info->all_damage);
XFixesDestroyRegion (display->xdisplay, info->all_damage);
info->all_damage = None;
info->clip_changed = FALSE;
meta_error_trap_pop (display, FALSE);
}
}
static void
repair_display (MetaDisplay *display)
{
GSList *screens;
#ifdef USE_IDLE_REPAINT
if (display->compositor->repaint_id > 0)
{
g_source_remove (display->compositor->repaint_id);
display->compositor->repaint_id = 0;
}
#endif
for (screens = display->screens; screens; screens = screens->next)
repair_screen ((MetaScreen *) screens->data);
}
#ifdef USE_IDLE_REPAINT
static gboolean
compositor_idle_cb (gpointer data)
{
MetaCompositor *compositor = (MetaCompositor *) data;
compositor->repaint_id = 0;
repair_display (compositor->display);
return FALSE;
}
static void
add_repair (MetaDisplay *display)
{
MetaCompositor *compositor = display->compositor;
if (compositor->repaint_id > 0)
return;
#if 0
compositor->repaint_id = g_idle_add_full (G_PRIORITY_HIGH_IDLE,
compositor_idle_cb, compositor,
NULL);
#else
/* Limit it to 50fps */
compositor->repaint_id = g_timeout_add_full (G_PRIORITY_HIGH, 20,
compositor_idle_cb, compositor,
NULL);
#endif
}
#endif
static void
add_damage (MetaScreen *screen,
XserverRegion damage)
{
MetaDisplay *display = screen->display;
MetaCompScreen *info = screen->compositor_data;
/* dump_xserver_region ("add_damage", display, damage); */
if (info->all_damage)
{
XFixesUnionRegion (display->xdisplay, info->all_damage,
info->all_damage, damage);
XFixesDestroyRegion (display->xdisplay, damage);
}
else
info->all_damage = damage;
#ifdef USE_IDLE_REPAINT
add_repair (display);
#endif
}
static void
damage_screen (MetaScreen *screen)
{
MetaDisplay *display = screen->display;
XserverRegion region;
XRectangle r;
r.x = 0;
r.y = 0;
r.width = screen->rect.width;
r.height = screen->rect.height;
region = XFixesCreateRegion (display->xdisplay, &r, 1);
dump_xserver_region ("damage_screen", display, region);
add_damage (screen, region);
}
static void
repair_win (MetaCompWindow *cw)
{
MetaScreen *screen = cw->screen;
MetaDisplay *display = screen->display;
XserverRegion parts;
meta_error_trap_push (display);
if (!cw->damaged)
{
parts = win_extents (cw);
XDamageSubtract (display->xdisplay, cw->damage, None, None);
}
else
{
parts = XFixesCreateRegion (display->xdisplay, 0, 0);
XDamageSubtract (display->xdisplay, cw->damage, None, parts);
XFixesTranslateRegion (display->xdisplay, parts,
cw->attrs.x + cw->attrs.border_width,
cw->attrs.y + cw->attrs.border_width);
}
meta_error_trap_pop (display, FALSE);
dump_xserver_region ("repair_win", display, parts);
add_damage (screen, parts);
cw->damaged = TRUE;
}
static void
free_win (MetaCompWindow *cw,
gboolean destroy)
{
MetaDisplay *display = cw->screen->display;
MetaCompScreen *info = cw->screen->compositor_data;
#ifdef HAVE_NAME_WINDOW_PIXMAP
if (have_name_window_pixmap (display))
{
/* See comment in map_win */
if (cw->back_pixmap && destroy)
{
XFreePixmap (display->xdisplay, cw->back_pixmap);
cw->back_pixmap = None;
}
if (cw->shaded_back_pixmap && destroy)
{
XFreePixmap (display->xdisplay, cw->shaded_back_pixmap);
cw->shaded_back_pixmap = None;
}
}
#endif
if (cw->picture)
{
XRenderFreePicture (display->xdisplay, cw->picture);
cw->picture = None;
}
if (cw->shadow)
{
XRenderFreePicture (display->xdisplay, cw->shadow);
cw->shadow = None;
}
if (cw->alpha_pict)
{
XRenderFreePicture (display->xdisplay, cw->alpha_pict);
cw->alpha_pict = None;
}
if (cw->shadow_pict)
{
XRenderFreePicture (display->xdisplay, cw->shadow_pict);
cw->shadow_pict = None;
}
if (cw->border_size)
{
XFixesDestroyRegion (display->xdisplay, cw->border_size);
cw->border_size = None;
}
if (cw->border_clip)
{
XFixesDestroyRegion (display->xdisplay, cw->border_clip);
cw->border_clip = None;
}
if (cw->extents)
{
XFixesDestroyRegion (display->xdisplay, cw->extents);
cw->extents = None;
}
if (destroy)
{
if (cw->damage != None) {
meta_error_trap_push (display);
XDamageDestroy (display->xdisplay, cw->damage);
meta_error_trap_pop (display, FALSE);
cw->damage = None;
}
/* The window may not have been added to the list in this case,
but we can check anyway */
if (cw->type == META_COMP_WINDOW_DOCK)
info->dock_windows = g_slist_remove (info->dock_windows, cw);
g_free (cw);
}
}
static void
map_win (MetaDisplay *display,
MetaScreen *screen,
Window id)
{
MetaCompWindow *cw = find_window_for_screen (screen, id);
if (cw == NULL)
return;
#ifdef HAVE_NAME_WINDOW_PIXMAP
/* The reason we deallocate this here and not in unmap
is so that we will still have a valid pixmap for
whenever the window is unmapped */
if (cw->back_pixmap)
{
XFreePixmap (display->xdisplay, cw->back_pixmap);
cw->back_pixmap = None;
}
if (cw->shaded_back_pixmap)
{
XFreePixmap (display->xdisplay, cw->shaded_back_pixmap);
cw->shaded_back_pixmap = None;
}
#endif
cw->attrs.map_state = IsViewable;
cw->damaged = FALSE;
}
static void
unmap_win (MetaDisplay *display,
MetaScreen *screen,
Window id)
{
MetaCompWindow *cw = find_window_for_screen (screen, id);
MetaCompScreen *info = screen->compositor_data;
if (cw == NULL)
{
return;
}
cw->attrs.map_state = IsUnmapped;
cw->damaged = FALSE;
if (cw->extents != None)
{
dump_xserver_region ("unmap_win", display, cw->extents);
add_damage (screen, cw->extents);
cw->extents = None;
}
free_win (cw, FALSE);
info->clip_changed = TRUE;
}
static void
determine_mode (MetaDisplay *display,
MetaScreen *screen,
MetaCompWindow *cw)
{
XRenderPictFormat *format;
if (cw->alpha_pict)
{
XRenderFreePicture (display->xdisplay, cw->alpha_pict);
cw->alpha_pict = None;
}
if (cw->shadow_pict)
{
XRenderFreePicture (display->xdisplay, cw->shadow_pict);
cw->shadow_pict = None;
}
if (cw->attrs.class == InputOnly)
format = NULL;
else
format = XRenderFindVisualFormat (display->xdisplay, cw->attrs.visual);
if ((format && format->type == PictTypeDirect && format->direct.alphaMask)
|| cw->opacity != (guint) OPAQUE)
cw->mode = WINDOW_ARGB;
else
cw->mode = WINDOW_SOLID;
if (cw->extents)
{
XserverRegion damage;
damage = XFixesCreateRegion (display->xdisplay, NULL, 0);
XFixesCopyRegion (display->xdisplay, damage, cw->extents);
dump_xserver_region ("determine_mode", display, damage);
add_damage (screen, damage);
}
}
static gboolean
is_shaped (MetaDisplay *display,
Window xwindow)
{
int xws, yws, xbs, ybs;
unsigned wws, hws, wbs, hbs;
int bounding_shaped, clip_shaped;
if (META_DISPLAY_HAS_SHAPE (display))
{
XShapeQueryExtents (display->xdisplay, xwindow, &bounding_shaped,
&xws, &yws, &wws, &hws, &clip_shaped,
&xbs, &ybs, &wbs, &hbs);
return (bounding_shaped != 0);
}
return FALSE;
}
static void
get_window_type (MetaDisplay *display,
MetaCompWindow *cw)
{
MetaCompositor *compositor = display->compositor;
int n_atoms;
Atom *atoms, type_atom;
int i;
type_atom = None;
n_atoms = 0;
atoms = NULL;
meta_prop_get_atom_list (display, cw->id,
display->atom_net_wm_window_type,
&atoms, &n_atoms);
for (i = 0; i < n_atoms; i++)
{
if (atoms[i] == compositor->atom_net_wm_window_type_dnd ||
atoms[i] == display->atom_net_wm_window_type_desktop ||
atoms[i] == display->atom_net_wm_window_type_dock ||
atoms[i] == display->atom_net_wm_window_type_toolbar ||
atoms[i] == display->atom_net_wm_window_type_menu ||
atoms[i] == display->atom_net_wm_window_type_dialog ||
atoms[i] == display->atom_net_wm_window_type_normal ||
atoms[i] == display->atom_net_wm_window_type_utility ||
atoms[i] == display->atom_net_wm_window_type_splash)
{
type_atom = atoms[i];
break;
}
}
meta_XFree (atoms);
if (type_atom == compositor->atom_net_wm_window_type_dnd)
cw->type = META_COMP_WINDOW_DND;
else if (type_atom == display->atom_net_wm_window_type_desktop)
cw->type = META_COMP_WINDOW_DESKTOP;
else if (type_atom == display->atom_net_wm_window_type_dock)
cw->type = META_COMP_WINDOW_DOCK;
else
cw->type = META_COMP_WINDOW_NORMAL;
/* meta_verbose ("Window is %d\n", cw->type); */
}
/* Must be called with an error trap in place */
static void
add_win (MetaScreen *screen,
MetaWindow *window,
Window xwindow)
{
MetaDisplay *display = screen->display;
MetaCompScreen *info = screen->compositor_data;
MetaCompWindow *cw;
gulong event_mask;
if (info == NULL)
return;
if (xwindow == info->output)
return;
cw = g_new0 (MetaCompWindow, 1);
cw->screen = screen;
cw->window = window;
cw->id = xwindow;
if (!XGetWindowAttributes (display->xdisplay, xwindow, &cw->attrs))
{
g_free (cw);
return;
}
get_window_type (display, cw);
/* If Metacity has decided not to manage this window then the input events
won't have been set on the window */
event_mask = cw->attrs.your_event_mask | PropertyChangeMask;
XSelectInput (display->xdisplay, xwindow, event_mask);
#ifdef HAVE_NAME_WINDOW_PIXMAP
cw->back_pixmap = None;
cw->shaded_back_pixmap = None;
#endif
cw->damaged = FALSE;
cw->shaped = is_shaped (display, xwindow);
if (cw->attrs.class == InputOnly)
cw->damage = None;
else
cw->damage = XDamageCreate (display->xdisplay, xwindow,
XDamageReportNonEmpty);
cw->alpha_pict = None;
cw->shadow_pict = None;
cw->border_size = None;
cw->extents = None;
cw->shadow = None;
cw->shadow_dx = 0;
cw->shadow_dy = 0;
cw->shadow_width = 0;
cw->shadow_height = 0;
if (window && window->has_focus)
cw->shadow_type = META_SHADOW_LARGE;
else
cw->shadow_type = META_SHADOW_MEDIUM;
cw->opacity = OPAQUE;
cw->border_clip = None;
determine_mode (display, screen, cw);
cw->needs_shadow = window_has_shadow (cw);
/* Only add the window to the list of docks if it needs a shadow */
if (cw->type == META_COMP_WINDOW_DOCK && cw->needs_shadow)
{
meta_verbose ("Appending %p to dock windows\n", cw);
info->dock_windows = g_slist_append (info->dock_windows, cw);
}
/* Add this to the list at the top of the stack
before it is mapped so that map_win can find it again */
info->windows = g_list_prepend (info->windows, cw);
g_hash_table_insert (info->windows_by_xid, (gpointer) xwindow, cw);
if (cw->attrs.map_state == IsViewable)
map_win (display, screen, xwindow);
}
static void
destroy_win (MetaDisplay *display,
Window xwindow,
gboolean gone)
{
MetaScreen *screen;
MetaCompScreen *info;
MetaCompWindow *cw;
cw = find_window_in_display (display, xwindow);
if (cw == NULL)
return;
screen = cw->screen;
if (cw->extents != None)
{
dump_xserver_region ("destroy_win", display, cw->extents);
add_damage (screen, cw->extents);
cw->extents = None;
}
info = screen->compositor_data;
info->windows = g_list_remove (info->windows, (gconstpointer) cw);
g_hash_table_remove (info->windows_by_xid, (gpointer) xwindow);
free_win (cw, TRUE);
}
static void
restack_win (MetaCompWindow *cw,
Window above)
{
MetaScreen *screen;
MetaCompScreen *info;
Window previous_above;
GList *sibling, *next;
screen = cw->screen;
info = screen->compositor_data;
sibling = g_list_find (info->windows, (gconstpointer) cw);
next = g_list_next (sibling);
previous_above = None;
if (next)
{
MetaCompWindow *ncw = (MetaCompWindow *) next->data;
previous_above = ncw->id;
}
/* If above is set to None, the window whose state was changed is on
* the bottom of the stack with respect to sibling.
*/
if (above == None)
{
/* Insert at bottom of window stack */
info->windows = g_list_delete_link (info->windows, sibling);
info->windows = g_list_append (info->windows, cw);
}
else if (previous_above != above)
{
GList *index;
for (index = info->windows; index; index = index->next) {
MetaCompWindow *cw2 = (MetaCompWindow *) index->data;
if (cw2->id == above)
break;
}
if (index != NULL)
{
info->windows = g_list_delete_link (info->windows, sibling);
info->windows = g_list_insert_before (info->windows, index, cw);
}
}
}
static void
resize_win (MetaCompWindow *cw,
int x,
int y,
int width,
int height,
int border_width,
gboolean override_redirect)
{
MetaScreen *screen;
MetaDisplay *display;
MetaCompScreen *info;
Display *xdisplay;
XserverRegion damage;
gboolean debug;
screen = cw->screen;
display = screen->display;
xdisplay = display->xdisplay;
info = screen->compositor_data;
debug = ((MetaCompositor *) display->compositor)->debug;
if (cw->extents)
{
damage = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesCopyRegion (xdisplay, damage, cw->extents);
}
else
{
damage = None;
if (debug)
fprintf (stderr, "no extents to damage !\n");
}
/* { // Damage whole screen each time ! ;-)
XRectangle r;
r.x = 0;
r.y = 0;
r.width = screen->rect.width;
r.height = screen->rect.height;
fprintf (stderr, "Damage whole screen %d,%d (%d %d)\n",
r.x, r.y, r.width, r.height);
damage = XFixesCreateRegion (display->xdisplay, &r, 1);
} */
cw->attrs.x = x;
cw->attrs.y = y;
if (cw->attrs.width != width || cw->attrs.height != height)
{
#ifdef HAVE_NAME_WINDOW_PIXMAP
if (have_name_window_pixmap (display))
{
if (cw->shaded_back_pixmap)
{
XFreePixmap (xdisplay, cw->shaded_back_pixmap);
cw->shaded_back_pixmap = None;
}
if (cw->back_pixmap)
{
/* If the window is shaded, we store the old backing pixmap
so we can return a proper image of the window */
if (cw->window && cw->window->shaded)
{
cw->shaded_back_pixmap = cw->back_pixmap;
cw->back_pixmap = None;
}
else
{
XFreePixmap (xdisplay, cw->back_pixmap);
cw->back_pixmap = None;
}
}
}
#endif
if (cw->picture)
{
XRenderFreePicture (xdisplay, cw->picture);
cw->picture = None;
}
if (cw->shadow)
{
XRenderFreePicture (xdisplay, cw->shadow);
cw->shadow = None;
}
}
cw->attrs.width = width;
cw->attrs.height = height;
cw->attrs.border_width = border_width;
cw->attrs.override_redirect = override_redirect;
if (cw->extents)
XFixesDestroyRegion (xdisplay, cw->extents);
cw->extents = win_extents (cw);
if (damage)
{
if (debug)
fprintf (stderr, "Inexplicable intersection with new extents!\n");
XFixesUnionRegion (xdisplay, damage, damage, cw->extents);
}
else
{
damage = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesCopyRegion (xdisplay, damage, cw->extents);
}
dump_xserver_region ("resize_win", display, damage);
add_damage (screen, damage);
info->clip_changed = TRUE;
}
/* event processors must all be called with an error trap in place */
static void
process_circulate_notify (MetaCompositor *compositor,
XCirculateEvent *event)
{
MetaCompWindow *cw = find_window_in_display (compositor->display,
event->window);
MetaCompWindow *top;
MetaCompScreen *info;
MetaScreen *screen;
GList *first;
Window above;
if (!cw)
return;
screen = cw->screen;
info = screen->compositor_data;
first = info->windows;
top = (MetaCompWindow *) first->data;
if ((event->place == PlaceOnTop) && top)
above = top->id;
else
above = None;
restack_win (cw, above);
info->clip_changed = TRUE;
#ifdef USE_IDLE_REPAINT
add_repair (compositor->display);
#endif
}
static void
process_configure_notify (MetaCompositor *compositor,
XConfigureEvent *event)
{
MetaDisplay *display = compositor->display;
MetaCompWindow *cw = find_window_in_display (display, event->window);
if (cw)
{
#if 0
int x = -1, y = -1, width = -1, height = -1;
int ex = -1, ey = -1, ewidth = -1, eheight = -1;
if (cw->window) {
x = cw->window->rect.x;
y = cw->window->rect.y;
width = cw->window->rect.width;
height = cw->window->rect.height;
}
fprintf (stderr, "configure notify xy (%d %d) -> (%d %d), wh (%d %d) -> (%d %d)\n",
x, y, event->x, event->y,
width, height, event->width, event->height);
#endif
if (compositor->debug)
{
fprintf (stderr, "configure notify %d %d %d\n", cw->damaged,
cw->shaped, cw->needs_shadow);
dump_xserver_region ("\textents", display, cw->extents);
fprintf (stderr, "\txy (%d %d), wh (%d %d)\n",
event->x, event->y, event->width, event->height);
}
restack_win (cw, event->above);
resize_win (cw, event->x, event->y, event->width, event->height,
event->border_width, event->override_redirect);
}
else
{
MetaScreen *screen;
MetaCompScreen *info;
/* Might be the root window? */
screen = meta_display_screen_for_root (display, event->window);
if (screen == NULL)
return;
info = screen->compositor_data;
if (info->root_buffer)
{
XRenderFreePicture (display->xdisplay, info->root_buffer);
info->root_buffer = None;
}
damage_screen (screen);
}
}
static void
process_property_notify (MetaCompositor *compositor,
XPropertyEvent *event)
{
MetaDisplay *display = compositor->display;
MetaScreen *screen;
int p;
Atom background_atoms[2];
/* Check for the background property changing */
background_atoms[0] = compositor->atom_x_root_pixmap;
background_atoms[1] = compositor->atom_x_set_root;
for (p = 0; p < 2; p++)
{
if (event->atom == background_atoms[p])
{
screen = meta_display_screen_for_root (display, event->window);
if (screen)
{
MetaCompScreen *info = screen->compositor_data;
if (info->root_tile)
{
XClearArea (display->xdisplay, screen->xroot,
0, 0, 0, 0, TRUE);
XRenderFreePicture (display->xdisplay, info->root_tile);
info->root_tile = None;
#ifdef USE_IDLE_REPAINT
add_repair (display);
#endif
return;
}
}
}
}
/* Check for the opacity changing */
if (event->atom == compositor->atom_net_wm_window_opacity)
{
MetaCompWindow *cw = find_window_in_display (display, event->window);
gulong value;
if (!cw)
return;
if (meta_prop_get_cardinal (display, event->window,
compositor->atom_net_wm_window_opacity,
&value) == FALSE)
value = OPAQUE;
cw->opacity = (guint)value;
determine_mode (display, cw->screen, cw);
cw->needs_shadow = window_has_shadow (cw);
if (cw->shadow)
{
XRenderFreePicture (display->xdisplay, cw->shadow);
cw->shadow = None;
}
if (cw->extents)
XFixesDestroyRegion (display->xdisplay, cw->extents);
cw->extents = win_extents (cw);
cw->damaged = TRUE;
#ifdef USE_IDLE_REPAINT
add_repair (display);
#endif
return;
}
if (event->atom == display->atom_net_wm_window_type) {
MetaCompWindow *cw = find_window_in_display (display, event->window);
if (!cw)
return;
get_window_type (display, cw);
cw->needs_shadow = window_has_shadow (cw);
return;
}
}
static void
expose_area (MetaScreen *screen,
XRectangle *rects,
int nrects)
{
MetaDisplay *display;
XserverRegion region;
display = screen->display;
region = XFixesCreateRegion (display->xdisplay, rects, nrects);
dump_xserver_region ("expose_area", display, region);
add_damage (screen, region);
}
static void
process_expose (MetaCompositor *compositor,
XExposeEvent *event)
{
MetaCompWindow *cw = find_window_in_display (compositor->display,
event->window);
MetaScreen *screen = NULL;
XRectangle rect[1];
int origin_x = 0, origin_y = 0;
if (cw != NULL)
{
screen = cw->screen;
origin_x = cw->attrs.x; /* + cw->attrs.border_width; ? */
origin_y = cw->attrs.y; /* + cw->attrs.border_width; ? */
}
else
{
screen = meta_display_screen_for_root (compositor->display,
event->window);
if (screen == NULL)
return;
}
rect[0].x = event->x + origin_x;
rect[0].y = event->y + origin_y;
rect[0].width = event->width;
rect[0].height = event->height;
expose_area (screen, rect, 1);
}
static void
process_unmap (MetaCompositor *compositor,
XUnmapEvent *event)
{
MetaCompWindow *cw;
if (event->from_configure)
{
/* Ignore unmap caused by parent's resize */
return;
}
cw = find_window_in_display (compositor->display, event->window);
if (cw)
unmap_win (compositor->display, cw->screen, event->window);
}
static void
process_map (MetaCompositor *compositor,
XMapEvent *event)
{
MetaCompWindow *cw = find_window_in_display (compositor->display,
event->window);
if (cw)
map_win (compositor->display, cw->screen, event->window);
}
static void
process_reparent (MetaCompositor *compositor,
XReparentEvent *event,
MetaWindow *window)
{
MetaScreen *screen;
screen = meta_display_screen_for_root (compositor->display, event->parent);
if (screen != NULL)
add_win (screen, window, event->window);
else
destroy_win (compositor->display, event->window, FALSE);
}
static void
process_create (MetaCompositor *compositor,
XCreateWindowEvent *event,
MetaWindow *window)
{
MetaScreen *screen;
/* We are only interested in top level windows, others will
be caught by normal metacity functions */
screen = meta_display_screen_for_root (compositor->display, event->parent);
if (screen == NULL)
return;
if (!find_window_in_display (compositor->display, event->window))
add_win (screen, window, event->window);
}
static void
process_destroy (MetaCompositor *compositor,
XDestroyWindowEvent *event)
{
destroy_win (compositor->display, event->window, FALSE);
}
static void
process_damage (MetaCompositor *compositor,
XDamageNotifyEvent *event)
{
MetaCompWindow *cw = find_window_in_display (compositor->display,
event->drawable);
if (cw == NULL)
return;
repair_win (cw);
#ifdef USE_IDLE_REPAINT
if (event->more == FALSE)
add_repair (compositor->display);
#endif
}
static void
process_shape (MetaCompositor *compositor,
XShapeEvent *event)
{
MetaCompWindow *cw = find_window_in_display (compositor->display,
event->window);
if (cw == NULL)
return;
if (event->kind == ShapeBounding)
{
if (!event->shaped && cw->shaped)
cw->shaped = FALSE;
resize_win (cw, cw->attrs.x, cw->attrs.y,
event->width + event->x, event->height + event->y,
cw->attrs.border_width, cw->attrs.override_redirect);
if (event->shaped && !cw->shaped)
cw->shaped = TRUE;
}
}
static int
timeout_debug (MetaCompositor *compositor)
{
compositor->show_redraw = (g_getenv ("METACITY_DEBUG_REDRAWS") != NULL);
compositor->debug = (g_getenv ("METACITY_DEBUG_COMPOSITOR") != NULL);
return FALSE;
}
MetaCompositor *
meta_compositor_new (MetaDisplay *display)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
char *atom_names[] = {
"_XROOTPMAP_ID",
"_XSETROOT_ID",
"_NET_WM_WINDOW_OPACITY",
"_NET_WM_WINDOW_TYPE_DND",
};
Atom atoms[G_N_ELEMENTS(atom_names)];
MetaCompositor *compositor;
compositor = g_new (MetaCompositor, 1);
compositor->display = display;
meta_verbose ("Creating %d atoms\n", (int) G_N_ELEMENTS (atom_names));
XInternAtoms (display->xdisplay, atom_names, G_N_ELEMENTS (atom_names),
False, atoms);
compositor->atom_x_root_pixmap = atoms[0];
compositor->atom_x_set_root = atoms[1];
compositor->atom_net_wm_window_opacity = atoms[2];
compositor->atom_net_wm_window_type_dnd = atoms[3];
#ifdef USE_IDLE_REPAINT
meta_verbose ("Using idle repaint\n");
compositor->repaint_id = 0;
#endif
compositor->enabled = TRUE;
g_timeout_add (2000, (GSourceFunc) timeout_debug, compositor);
return compositor;
#else
return NULL;
#endif
}
void
meta_compositor_add_window (MetaCompositor *compositor,
MetaWindow *window,
Window xwindow,
XWindowAttributes *attrs)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MetaScreen *screen = meta_screen_for_x_screen (attrs->screen);
meta_error_trap_push (compositor->display);
add_win (screen, window, xwindow);
meta_error_trap_pop (compositor->display, FALSE);
#endif
}
void
meta_compositor_remove_window (MetaCompositor *compositor,
Window xwindow)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
static void
show_overlay_window (MetaScreen *screen,
Window cow)
{
MetaDisplay *display = screen->display;
#ifdef HAVE_COW
if (have_cow (display))
{
XserverRegion region;
region = XFixesCreateRegion (display->xdisplay, NULL, 0);
XFixesSetWindowShapeRegion (display->xdisplay, cow, ShapeBounding, 0, 0, 0);
XFixesSetWindowShapeRegion (display->xdisplay, cow, ShapeInput, 0, 0, region);
XFixesDestroyRegion (display->xdisplay, region);
damage_screen (screen);
}
#endif
}
#if 0
static void
hide_overlay_window (MetaScreen *screen,
Window cow)
{
MetaDisplay *display = screen->display;
XserverRegion region;
region = XFixesCreateRegion (display->xdisplay, NULL, 0);
XFixesSetWindowShapeRegion (display->xdisplay,
cow, ShapeBounding,
0, 0, region);
XFixesDestroyRegion (display->xdisplay, region);
}
#endif
static Window
get_output_window (MetaScreen *screen)
{
MetaDisplay *display = screen->display;
Window output;
#ifdef HAVE_COW
if (have_cow (display))
{
output = XCompositeGetOverlayWindow (display->xdisplay, screen->xroot);
XSelectInput (display->xdisplay, output, ExposureMask);
}
else
#endif
{
output = screen->xroot;
}
return output;
}
void
meta_compositor_manage_screen (MetaCompositor *compositor,
MetaScreen *screen)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MetaCompScreen *info;
MetaDisplay *display = screen->display;
XRenderPictureAttributes pa;
XRenderPictFormat *visual_format;
/* Check if the screen is already managed */
if (screen->compositor_data)
return;
gdk_error_trap_push ();
XCompositeRedirectSubwindows (display->xdisplay, screen->xroot,
CompositeRedirectManual);
XSync (display->xdisplay, FALSE);
if (gdk_error_trap_pop ())
{
g_warning ("Another compositing manager is running on screen %i",
screen->number);
return;
}
info = g_new0 (MetaCompScreen, 1);
info->screen = screen;
screen->compositor_data = info;
visual_format = XRenderFindVisualFormat (display->xdisplay,
DefaultVisual (display->xdisplay,
screen->number));
if (!visual_format)
{
g_warning ("Cannot find visual format on screen %i", screen->number);
return;
}
info->output = get_output_window (screen);
pa.subwindow_mode = IncludeInferiors;
info->root_picture = XRenderCreatePicture (display->xdisplay, info->output,
visual_format,
CPSubwindowMode, &pa);
if (info->root_picture == None)
{
g_warning ("Cannot create root picture on screen %i", screen->number);
return;
}
info->root_buffer = None;
info->black_picture = solid_picture (display, screen, TRUE, 1, 0, 0, 0);
info->root_tile = None;
info->all_damage = None;
info->windows = NULL;
info->windows_by_xid = g_hash_table_new (g_direct_hash, g_direct_equal);
info->focus_window = display->focus_window;
info->compositor_active = TRUE;
info->overlays = 0;
info->clip_changed = TRUE;
info->have_shadows = (g_getenv("META_DEBUG_NO_SHADOW") == NULL);
if (info->have_shadows)
{
meta_verbose ("Enabling shadows\n");
generate_shadows (info);
}
else
meta_verbose ("Disabling shadows\n");
XClearArea (display->xdisplay, info->output, 0, 0, 0, 0, TRUE);
meta_screen_set_cm_selection (screen);
/* Now we're up and running we can show the output if needed */
show_overlay_window (screen, info->output);
#endif
}
void
meta_compositor_unmanage_screen (MetaCompositor *compositor,
MetaScreen *screen)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MetaDisplay *display = screen->display;
MetaCompScreen *info;
GList *index;
/* This screen isn't managed */
if (screen->compositor_data == NULL)
return;
info = screen->compositor_data;
/* Destroy the windows */
for (index = info->windows; index; index = index->next)
{
MetaCompWindow *cw = (MetaCompWindow *) index->data;
free_win (cw, TRUE);
}
g_list_free (info->windows);
g_hash_table_destroy (info->windows_by_xid);
if (info->root_picture)
XRenderFreePicture (display->xdisplay, info->root_picture);
if (info->black_picture)
XRenderFreePicture (display->xdisplay, info->black_picture);
if (info->have_shadows)
{
int i;
for (i = 0; i < LAST_SHADOW_TYPE; i++)
g_free (info->shadows[i]->gaussian_map);
}
XCompositeUnredirectSubwindows (display->xdisplay, screen->xroot,
CompositeRedirectManual);
meta_screen_unset_cm_selection (screen);
g_free (info);
screen->compositor_data = NULL;
#endif
}
void
meta_compositor_set_updates (MetaCompositor *compositor,
MetaWindow *window,
gboolean updates)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
void
meta_compositor_destroy (MetaCompositor *compositor)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
g_free (compositor);
#endif
}
void
meta_compositor_begin_move (MetaCompositor *compositor,
MetaWindow *window,
MetaRectangle *initial,
int grab_x,
int grab_y)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
void
meta_compositor_update_move (MetaCompositor *compositor,
MetaWindow *window,
int x,
int y)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
void
meta_compositor_end_move (MetaCompositor *compositor,
MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
#endif
}
void
meta_compositor_free_window (MetaCompositor *compositor,
MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
/* FIXME: When an undecorated window is hidden this is called,
but the window does not get readded if it is subsequentally shown again
See http://bugzilla.gnome.org/show_bug.cgi?id=504876
I don't *think* theres any need for this call anyway, leaving it out
does not seem to cause any side effects so far, but I should check with
someone who understands more. */
/* destroy_win (compositor->display, window->xwindow, FALSE); */
#endif
}
void
meta_compositor_process_event (MetaCompositor *compositor,
XEvent *event,
MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
/*
* This trap is so that none of the compositor functions cause
* X errors. This is really a hack, but I'm afraid I don't understand
* enough about Metacity/X to know how else you are supposed to do it
*/
meta_error_trap_push (compositor->display);
switch (event->type)
{
case CirculateNotify:
process_circulate_notify (compositor, (XCirculateEvent *) event);
break;
case ConfigureNotify:
process_configure_notify (compositor, (XConfigureEvent *) event);
break;
case PropertyNotify:
process_property_notify (compositor, (XPropertyEvent *) event);
break;
case Expose:
process_expose (compositor, (XExposeEvent *) event);
break;
case UnmapNotify:
process_unmap (compositor, (XUnmapEvent *) event);
break;
case MapNotify:
process_map (compositor, (XMapEvent *) event);
break;
case ReparentNotify:
process_reparent (compositor, (XReparentEvent *) event, window);
break;
case CreateNotify:
process_create (compositor, (XCreateWindowEvent *) event, window);
break;
case DestroyNotify:
process_destroy (compositor, (XDestroyWindowEvent *) event);
break;
default:
if (event->type == compositor->display->damage_event_base + XDamageNotify)
process_damage (compositor, (XDamageNotifyEvent *) event);
else if (event->type == compositor->display->shape_event_base + ShapeNotify)
process_shape (compositor, (XShapeEvent *) event);
else
{
meta_error_trap_pop (compositor->display, FALSE);
return;
}
break;
}
meta_error_trap_pop (compositor->display, FALSE);
#ifndef USE_IDLE_REPAINT
repair_display (compositor->display);
#endif
return;
#endif
}
Pixmap
meta_compositor_get_window_pixmap (MetaCompositor *compositor,
MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MetaCompWindow *cw = NULL;
cw = find_window_for_screen (window->screen,
window->frame ? window->frame->xwindow :
window->xwindow);
if (cw == NULL)
return None;
#ifdef HAVE_NAME_WINDOW_PIXMAP
if (have_name_window_pixmap (window->display))
{
if (window->shaded)
return cw->shaded_back_pixmap;
else
return cw->back_pixmap;
}
else
#endif
return None;
#endif
}
void
meta_compositor_set_active_window (MetaCompositor *compositor,
MetaWindow *window)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MetaDisplay *display = compositor->display;
Display *xdisplay = display->xdisplay;
MetaScreen *screen = window->screen;
MetaCompWindow *old_focus = NULL, *new_focus = NULL;
MetaCompScreen *info = screen->compositor_data;
MetaWindow *old_focus_win = info->focus_window;
if (old_focus_win)
{
old_focus = find_window_for_screen (screen,
old_focus_win->frame ? old_focus_win->frame->xwindow :
old_focus_win->xwindow);
}
new_focus = find_window_for_screen (screen,
window->frame ? window->frame->xwindow :
window->xwindow);
info->focus_window = window;
if (old_focus)
{
XserverRegion damage;
/* Tear down old shadows */
old_focus->shadow_type = META_SHADOW_MEDIUM;
determine_mode (display, screen, old_focus);
old_focus->needs_shadow = window_has_shadow (old_focus);
if (old_focus->attrs.map_state == IsViewable)
{
if (old_focus->shadow)
{
XRenderFreePicture (xdisplay, old_focus->shadow);
old_focus->shadow = None;
}
if (old_focus->extents)
{
damage = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesCopyRegion (xdisplay, damage, old_focus->extents);
XFixesDestroyRegion (xdisplay, old_focus->extents);
}
else
damage = None;
/* Build new extents */
old_focus->extents = win_extents (old_focus);
if (damage)
XFixesUnionRegion (xdisplay, damage, damage, old_focus->extents);
else
{
damage = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesCopyRegion (xdisplay, damage, old_focus->extents);
}
dump_xserver_region ("resize_win", display, damage);
add_damage (screen, damage);
info->clip_changed = TRUE;
}
}
if (new_focus)
{
XserverRegion damage;
new_focus->shadow_type = META_SHADOW_LARGE;
determine_mode (display, screen, new_focus);
new_focus->needs_shadow = window_has_shadow (new_focus);
if (new_focus->shadow)
{
XRenderFreePicture (xdisplay, new_focus->shadow);
new_focus->shadow = None;
}
if (new_focus->extents)
{
damage = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesCopyRegion (xdisplay, damage, new_focus->extents);
XFixesDestroyRegion (xdisplay, new_focus->extents);
}
else
damage = None;
/* Build new extents */
new_focus->extents = win_extents (new_focus);
if (damage)
XFixesUnionRegion (xdisplay, damage, damage, new_focus->extents);
else
{
damage = XFixesCreateRegion (xdisplay, NULL, 0);
XFixesCopyRegion (xdisplay, damage, new_focus->extents);
}
dump_xserver_region ("resize_win", display, damage);
add_damage (screen, damage);
info->clip_changed = TRUE;
}
#ifdef USE_IDLE_REPAINT
add_repair (display);
#endif
#endif
}
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