static void
process_monitors_change (GdkScreen *screen)
{
GdkX11Screen *x11_screen = GDK_X11_SCREEN (screen);
gint n_monitors;
gint primary_monitor;
GdkX11Monitor *monitors;
gboolean changed;
primary_monitor = x11_screen->primary_monitor;
n_monitors = x11_screen->n_monitors;
monitors = x11_screen->monitors;
x11_screen->n_monitors = 0;
x11_screen->monitors = NULL;
init_multihead (screen);
changed =
!compare_monitors (monitors, n_monitors,
x11_screen->monitors, x11_screen->n_monitors) ||
x11_screen->primary_monitor != primary_monitor;
free_monitors (monitors, n_monitors);
if (changed)
g_signal_emit_by_name (screen, "monitors-changed");
}
static void
deinit_multihead (GdkScreen *screen)
{
GdkX11Screen *x11_screen = GDK_X11_SCREEN (screen);
free_monitors (x11_screen->monitors, x11_screen->n_monitors);
x11_screen->n_monitors = 0;
x11_screen->monitors = NULL;
}
static void
deinit_multihead (GdkScreen *screen)
{
GdkScreenGix *screen_gix = GDK_SCREEN_GIX (screen);
free_monitors (screen_gix->monitors, screen_gix->n_monitors);
screen_gix->n_monitors = 0;
screen_gix->monitors = NULL;
}
static void
deinit_multihead (GdkScreen *screen)
{
GdkX11Screen *x11_screen = GDK_X11_SCREEN (screen);
free_monitors (x11_screen->monitors, x11_screen->n_monitors);
g_clear_pointer (&x11_screen->xinerama_matches, g_hash_table_destroy);
x11_screen->n_monitors = 0;
x11_screen->monitors = NULL;
}
/* Synchronize the contents of si->ssi to the current state of the monitors.
Doesn't change anything if nothing has changed; otherwise, alters and
reuses existing saver_screen_info structs as much as possible.
Returns True if anything changed.
*/
Bool
update_screen_layout (saver_info *si)
{
monitor **monitors = scan_monitors (si);
int count = 0;
int good_count = 0;
int i, j;
int seen_screens[100] = { 0, };
if (! layouts_differ_p (monitors, si->monitor_layout))
{
free_monitors (monitors);
return False;
}
free_monitors (si->monitor_layout);
si->monitor_layout = monitors;
check_monitor_sanity (si->monitor_layout);
while (monitors[count])
{
if (monitors[count]->sanity == S_SANE)
good_count++;
count++;
}
if (si->ssi_count == 0)
{
si->ssi_count = 10;
si->screens = (saver_screen_info *)
calloc (sizeof(*si->screens), si->ssi_count);
}
if (si->ssi_count <= good_count)
{
si->ssi_count = good_count + 10;
si->screens = (saver_screen_info *)
realloc (si->screens, sizeof(*si->screens) * si->ssi_count);
memset (si->screens + si->nscreens, 0,
sizeof(*si->screens) * (si->ssi_count - si->nscreens));
}
if (! si->screens) abort();
si->nscreens = good_count;
/* Regenerate the list of GL visuals as needed. */
if (si->best_gl_visuals)
free (si->best_gl_visuals);
si->best_gl_visuals = 0;
for (i = 0, j = 0; i < count; i++)
{
monitor *m = monitors[i];
saver_screen_info *ssi = &si->screens[j];
Screen *old_screen = ssi->screen;
int sn;
if (monitors[i]->sanity != S_SANE) continue;
ssi->global = si;
ssi->number = j;
sn = screen_number (m->screen);
ssi->screen = m->screen;
ssi->real_screen_number = sn;
ssi->real_screen_p = (seen_screens[sn] == 0);
seen_screens[sn]++;
ssi->default_visual =
get_visual_resource (ssi->screen, "visualID", "VisualID", False);
ssi->current_visual = ssi->default_visual;
ssi->current_depth = visual_depth (ssi->screen, ssi->current_visual);
/* If the screen changed (or if this is the first time) we need
a new toplevel shell for this screen's depth.
*/
if (ssi->screen != old_screen)
initialize_screen_root_widget (ssi);
ssi->poll_mouse_last_root_x = -1;
ssi->poll_mouse_last_root_y = -1;
ssi->x = m->x;
ssi->y = m->y;
ssi->width = m->width;
ssi->height = m->height;
# ifndef DEBUG_MULTISCREEN
{
saver_preferences *p = &si->prefs;
if (p->debug_p
# ifdef QUAD_MODE
&& !p->quad_p
# endif
)
ssi->width /= 2;
}
# endif
j++;
}
si->default_screen = &si->screens[0];
return True;
}
static gboolean
init_randr13 (GdkScreen *screen)
{
#ifdef HAVE_RANDR
GdkDisplay *display = gdk_screen_get_display (screen);
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
GdkX11Screen *x11_screen = GDK_X11_SCREEN (screen);
Display *dpy = GDK_SCREEN_XDISPLAY (screen);
XRRScreenResources *resources;
RROutput primary_output;
RROutput first_output = None;
int i;
GArray *monitors;
gboolean randr12_compat = FALSE;
if (!display_x11->have_randr13)
return FALSE;
resources = XRRGetScreenResourcesCurrent (x11_screen->xdisplay,
x11_screen->xroot_window);
if (!resources)
return FALSE;
monitors = g_array_sized_new (FALSE, TRUE, sizeof (GdkX11Monitor),
resources->noutput);
for (i = 0; i < resources->noutput; ++i)
{
XRROutputInfo *output =
XRRGetOutputInfo (dpy, resources, resources->outputs[i]);
/* Non RandR1.2 X driver have output name "default" */
randr12_compat |= !g_strcmp0 (output->name, "default");
if (output->connection == RR_Disconnected)
{
XRRFreeOutputInfo (output);
continue;
}
if (output->crtc)
{
GdkX11Monitor monitor;
XRRCrtcInfo *crtc = XRRGetCrtcInfo (dpy, resources, output->crtc);
monitor.geometry.x = crtc->x;
monitor.geometry.y = crtc->y;
monitor.geometry.width = crtc->width;
monitor.geometry.height = crtc->height;
monitor.output = resources->outputs[i];
monitor.width_mm = output->mm_width;
monitor.height_mm = output->mm_height;
monitor.output_name = g_strdup (output->name);
/* FIXME: need EDID parser */
monitor.manufacturer = NULL;
g_array_append_val (monitors, monitor);
XRRFreeCrtcInfo (crtc);
}
XRRFreeOutputInfo (output);
}
if (resources->noutput > 0)
first_output = resources->outputs[0];
XRRFreeScreenResources (resources);
/* non RandR 1.2 X driver doesn't return any usable multihead data */
if (randr12_compat)
{
guint n_monitors = monitors->len;
free_monitors ((GdkX11Monitor *)g_array_free (monitors, FALSE),
n_monitors);
return FALSE;
}
g_array_sort (monitors,
(GCompareFunc) monitor_compare_function);
x11_screen->n_monitors = monitors->len;
x11_screen->monitors = (GdkX11Monitor *)g_array_free (monitors, FALSE);
x11_screen->primary_monitor = 0;
primary_output = XRRGetOutputPrimary (x11_screen->xdisplay,
x11_screen->xroot_window);
for (i = 0; i < x11_screen->n_monitors; ++i)
{
if (x11_screen->monitors[i].output == primary_output)
{
x11_screen->primary_monitor = i;
break;
}
/* No RandR1.3+ available or no primary set, fall back to prefer LVDS as primary if present */
if (primary_output == None &&
g_ascii_strncasecmp (x11_screen->monitors[i].output_name, "LVDS", 4) == 0)
{
x11_screen->primary_monitor = i;
break;
}
/* No primary specified and no LVDS found */
if (x11_screen->monitors[i].output == first_output)
x11_screen->primary_monitor = i;
}
return x11_screen->n_monitors > 0;
#endif
return FALSE;
}