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Reverse handling of XRandR events between Screen and MonitorManager

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Now MonitorManager does its own handling of XRandR events, which
means we no longer handle ConfigureNotify on the root window.
MetaScreen reacts to MonitorManager::monitor-changed and updates
its internal state, including the new size.

This paves the way for doing display configuration using only
the dummy backend, which would allow testing wl_output interfaces.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
This commit is contained in:
Giovanni Campagna 2013-07-22 18:57:12 +02:00 committed by Giovanni Campagna
parent 57d083730e
commit bf40409d97
5 changed files with 122 additions and 85 deletions
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33
src/core/display.c
View file

@ -2146,6 +2146,7 @@ event_callback (XEvent *event,
gboolean bypass_compositor;
gboolean filter_out_event;
XIEvent *input_event;
MetaMonitorManager *monitor;
display = data;
@ -2157,6 +2158,14 @@ event_callback (XEvent *event,
#ifdef HAVE_STARTUP_NOTIFICATION
sn_display_process_event (display->sn_display, event);
#endif
/* Intercept XRandR events early and don't attempt any
processing for them. We still let them through to Gdk though,
so it can update its own internal state.
*/
monitor = meta_monitor_manager_get ();
if (meta_monitor_manager_handle_xevent (monitor, event))
return FALSE;
bypass_compositor = FALSE;
filter_out_event = FALSE;
@ -2822,32 +2831,10 @@ event_callback (XEvent *event,
meta_stack_tracker_configure_event (screen->stack_tracker,
&event->xconfigure);
}
if (window && window->override_redirect)
meta_window_configure_notify (window, &event->xconfigure);
else
/* Handle screen resize */
{
MetaScreen *screen;
screen = meta_display_screen_for_root (display,
event->xconfigure.window);
if (screen != NULL)
{
#ifdef HAVE_RANDR
/* do the resize the official way */
XRRUpdateConfiguration (event);
#else
/* poke around in Xlib */
screen->xscreen->width = event->xconfigure.width;
screen->xscreen->height = event->xconfigure.height;
#endif
meta_screen_resize (screen,
event->xconfigure.width,
event->xconfigure.height);
}
}
break;
case ConfigureRequest:
/* This comment and code is found in both twm and fvwm */

7
src/core/monitor-private.h
View file

@ -162,6 +162,11 @@ MetaOutput *meta_monitor_manager_get_outputs (MetaMonitorManager *
int meta_monitor_manager_get_primary_index (MetaMonitorManager *manager);
void meta_monitor_manager_invalidate (MetaMonitorManager *manager);
gboolean meta_monitor_manager_handle_xevent (MetaMonitorManager *manager,
XEvent *event);
void meta_monitor_manager_get_screen_size (MetaMonitorManager *manager,
int *width,
int *height);
#endif

122
src/core/monitor.c
View file

@ -56,16 +56,16 @@ enum wl_output_transform {
#endif
typedef enum {
META_BACKEND_UNSPECIFIED,
META_BACKEND_DUMMY,
META_BACKEND_XRANDR,
META_BACKEND_COGL
} MetaBackend;
META_BACKEND_XRANDR
} MetaMonitorBackend;
struct _MetaMonitorManager
{
GObject parent_instance;
MetaBackend backend;
MetaMonitorBackend backend;
/* XXX: this structure is very badly
packed, but I like the logical organization
@ -75,6 +75,8 @@ struct _MetaMonitorManager
int max_screen_width;
int max_screen_height;
int screen_width;
int screen_height;
/* Outputs refer to physical screens,
CRTCs refer to stuff that can drive outputs
@ -100,6 +102,8 @@ struct _MetaMonitorManager
Display *xdisplay;
XRRScreenResources *resources;
int time;
int rr_event_base;
int rr_error_base;
#endif
int dbus_name_id;
@ -125,23 +129,17 @@ make_dummy_monitor_config (MetaMonitorManager *manager)
{
manager->backend = META_BACKEND_DUMMY;
manager->max_screen_width = 65535;
manager->max_screen_height = 65535;
manager->screen_width = 1024;
manager->screen_height = 768;
manager->modes = g_new0 (MetaMonitorMode, 1);
manager->n_modes = 1;
manager->modes[0].mode_id = 1;
if (manager->xdisplay)
{
Screen *screen = ScreenOfDisplay (manager->xdisplay,
DefaultScreen (manager->xdisplay));
manager->modes[0].width = WidthOfScreen (screen);
manager->modes[0].height = HeightOfScreen (screen);
}
else
{
manager->modes[0].width = 1024;
manager->modes[0].height = 768;
}
manager->modes[0].width = manager->screen_width;
manager->modes[0].height = manager->screen_height;
manager->modes[0].refresh_rate = 60.0;
manager->crtcs = g_new0 (MetaCRTC, 1);
@ -177,9 +175,6 @@ make_dummy_monitor_config (MetaMonitorManager *manager)
manager->outputs[0].possible_crtcs[0] = &manager->crtcs[0];
manager->outputs[0].n_possible_clones = 0;
manager->outputs[0].possible_clones = g_new0 (MetaOutput *, 0);
manager->max_screen_width = manager->modes[0].width;
manager->max_screen_height = manager->modes[0].height;
}
#ifdef HAVE_RANDR
@ -192,6 +187,7 @@ read_monitor_infos_from_xrandr (MetaMonitorManager *manager)
unsigned int i, j, k;
unsigned int n_actual_outputs;
int min_width, min_height;
Screen *screen;
if (manager->resources)
XRRFreeScreenResources (manager->resources);
@ -203,12 +199,17 @@ read_monitor_infos_from_xrandr (MetaMonitorManager *manager)
&manager->max_screen_width,
&manager->max_screen_height);
screen = ScreenOfDisplay (manager->xdisplay,
DefaultScreen (manager->xdisplay));
/* This is updated because we called RRUpdateConfiguration below */
manager->screen_width = WidthOfScreen (screen);
manager->screen_height = HeightOfScreen (screen);
resources = XRRGetScreenResourcesCurrent (manager->xdisplay,
DefaultRootWindow (manager->xdisplay));
if (!resources)
return make_dummy_monitor_config (manager);
manager->backend = META_BACKEND_XRANDR;
manager->resources = resources;
manager->time = resources->configTimestamp;
manager->n_outputs = resources->noutput;
@ -388,7 +389,7 @@ meta_monitor_manager_init (MetaMonitorManager *manager)
{
}
static gboolean
static MetaMonitorBackend
make_debug_config (MetaMonitorManager *manager)
{
const char *env;
@ -396,14 +397,14 @@ make_debug_config (MetaMonitorManager *manager)
env = g_getenv ("META_DEBUG_MULTIMONITOR");
if (env == NULL)
return FALSE;
return META_BACKEND_UNSPECIFIED;
#ifdef HAVE_RANDR
if (strcmp (env, "xrandr") == 0)
read_monitor_infos_from_xrandr (manager);
return META_BACKEND_XRANDR;
else
#endif
make_dummy_monitor_config (manager);
return META_BACKEND_DUMMY;
return TRUE;
}
@ -411,15 +412,12 @@ make_debug_config (MetaMonitorManager *manager)
static void
read_current_config (MetaMonitorManager *manager)
{
if (make_debug_config (manager))
return;
if (has_dummy_output ())
return make_dummy_monitor_config (manager);
#ifdef HAVE_RANDR
return read_monitor_infos_from_xrandr (manager);
if (manager->backend == META_BACKEND_XRANDR)
return read_monitor_infos_from_xrandr (manager);
#endif
return make_dummy_monitor_config (manager);
}
/*
@ -526,6 +524,40 @@ meta_monitor_manager_new (Display *display)
manager->xdisplay = display;
manager->backend = make_debug_config (manager);
if (manager->backend == META_BACKEND_UNSPECIFIED)
{
#ifdef HAVE_XRANDR
if (display)
manager->backend = META_BACKEND_XRANDR;
else
#endif
if (has_dummy_output ())
manager->backend = META_BACKEND_DUMMY;
}
#ifdef HAVE_XRANDR
if (manager->backend == META_BACKEND_XRANDR)
{
if (!XRRQueryExtension (display,
&manager->rr_event_base,
&manager->rr_error_base))
{
manager->backend = META_BACKEND_DUMMY;
}
else
{
/* We only use ScreenChangeNotify, but GDK uses the others,
and we don't want to step on its toes */
XRRSelectInput (display, DefaultRootWindow (display),
RRScreenChangeNotifyMask
| RRCrtcChangeNotifyMask
| RROutputPropertyNotifyMask);
}
}
#endif
read_current_config (manager);
make_logical_config (manager);
return manager;
@ -1157,7 +1189,17 @@ meta_monitor_manager_get_primary_index (MetaMonitorManager *manager)
}
void
meta_monitor_manager_invalidate (MetaMonitorManager *manager)
meta_monitor_manager_get_screen_size (MetaMonitorManager *manager,
int *width,
int *height)
{
*width = manager->screen_width;
*height = manager->screen_height;
}
gboolean
meta_monitor_manager_handle_xevent (MetaMonitorManager *manager,
XEvent *event)
{
MetaOutput *old_outputs;
MetaCRTC *old_crtcs;
@ -1165,6 +1207,15 @@ meta_monitor_manager_invalidate (MetaMonitorManager *manager)
MetaMonitorMode *old_modes;
int n_old_outputs;
if (manager->backend != META_BACKEND_XRANDR)
return FALSE;
#ifdef HAVE_RANDR
if ((event->type - manager->rr_event_base) != RRScreenChangeNotify)
return FALSE;
XRRUpdateConfiguration (event);
/* Save the old structures, so they stay valid during the update */
old_outputs = manager->outputs;
n_old_outputs = manager->n_outputs;
@ -1182,5 +1233,10 @@ meta_monitor_manager_invalidate (MetaMonitorManager *manager)
free_output_array (old_outputs, n_old_outputs);
g_free (old_modes);
g_free (old_crtcs);
return TRUE;
#else
return FALSE;
#endif
}

4
src/core/screen-private.h
View file

@ -222,10 +222,6 @@ void meta_screen_calc_workspace_layout (MetaScreen *screen,
MetaWorkspaceLayout *layout);
void meta_screen_free_workspace_layout (MetaWorkspaceLayout *layout);
void meta_screen_resize (MetaScreen *screen,
int width,
int height);
void meta_screen_minimize_all_on_active_workspace_except (MetaScreen *screen,
MetaWindow *keep);

41
src/core/screen.c
View file

@ -510,6 +510,7 @@ meta_screen_new (MetaDisplay *display,
char buf[128];
guint32 manager_timestamp;
gulong current_workspace;
MetaMonitorManager *manager;
replace_current_wm = meta_get_replace_current_wm ();
@ -668,8 +669,17 @@ meta_screen_new (MetaDisplay *display,
screen->xscreen = ScreenOfDisplay (xdisplay, number);
screen->xroot = xroot;
screen->rect.x = screen->rect.y = 0;
screen->rect.width = WidthOfScreen (screen->xscreen);
screen->rect.height = HeightOfScreen (screen->xscreen);
meta_monitor_manager_initialize (screen->display->xdisplay);
manager = meta_monitor_manager_get ();
g_signal_connect (manager, "monitors-changed",
G_CALLBACK (on_monitors_changed), screen);
meta_monitor_manager_get_screen_size (manager,
&screen->rect.width,
&screen->rect.height);
screen->current_cursor = -1; /* invalid/unset */
screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen);
screen->default_depth = DefaultDepthOfScreen (screen->xscreen);
@ -694,17 +704,7 @@ meta_screen_new (MetaDisplay *display,
screen->compositor_data = NULL;
screen->guard_window = None;
{
MetaMonitorManager *manager;
meta_monitor_manager_initialize (screen->display->xdisplay);
reload_monitor_infos (screen);
manager = meta_monitor_manager_get ();
g_signal_connect (manager, "monitors-changed",
G_CALLBACK (on_monitors_changed), screen);
}
reload_monitor_infos (screen);
meta_screen_set_cursor (screen, META_CURSOR_DEFAULT);
@ -2845,23 +2845,16 @@ meta_screen_resize_func (MetaScreen *screen,
meta_window_recalc_features (window);
}
void
meta_screen_resize (MetaScreen *screen,
int width,
int height)
{
screen->rect.width = width;
screen->rect.height = height;
meta_monitor_manager_invalidate (meta_monitor_manager_get ());
}
static void
on_monitors_changed (MetaMonitorManager *manager,
MetaScreen *screen)
{
GSList *tmp, *windows;
meta_monitor_manager_get_screen_size (manager,
&screen->rect.width,
&screen->rect.height);
reload_monitor_infos (screen);
set_desktop_geometry_hint (screen);