/* * gdkscreen-x11.c * * Copyright 2001 Sun Microsystems Inc. * * Erwann Chenede * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library. If not, see . */ #include "config.h" #include "gdkscreen-x11.h" #include "gdkdisplay-x11.h" #include "gdkprivate-x11.h" #include "xsettings-client.h" #include "gdkmonitor-x11.h" #include #include #include #include #ifdef HAVE_XFREE_XINERAMA #include #endif #ifdef HAVE_RANDR #include #endif #ifdef HAVE_XFIXES #include #endif static void gdk_x11_screen_dispose (GObject *object); static void gdk_x11_screen_finalize (GObject *object); static void init_randr_support (GdkX11Screen *screen); enum { WINDOW_MANAGER_CHANGED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL] = { 0 }; G_DEFINE_TYPE (GdkX11Screen, gdk_x11_screen, G_TYPE_OBJECT) typedef struct _NetWmSupportedAtoms NetWmSupportedAtoms; struct _NetWmSupportedAtoms { Atom *atoms; gulong n_atoms; }; static void gdk_x11_screen_init (GdkX11Screen *screen) { } static void gdk_x11_screen_dispose (GObject *object) { GdkX11Screen *x11_screen = GDK_X11_SCREEN (object); int i; for (i = 0; i < 32; ++i) { if (x11_screen->subwindow_gcs[i]) { XFreeGC (x11_screen->xdisplay, x11_screen->subwindow_gcs[i]); x11_screen->subwindow_gcs[i] = 0; } } _gdk_x11_xsettings_finish (x11_screen); for (i = 0; i < x11_screen->nvisuals; i++) g_object_run_dispose (G_OBJECT (x11_screen->visuals[i])); G_OBJECT_CLASS (gdk_x11_screen_parent_class)->dispose (object); x11_screen->xdisplay = NULL; x11_screen->xscreen = NULL; x11_screen->xroot_window = None; x11_screen->wmspec_check_window = None; } static void gdk_x11_screen_finalize (GObject *object) { GdkX11Screen *x11_screen = GDK_X11_SCREEN (object); gint i; /* Visual Part */ for (i = 0; i < x11_screen->nvisuals; i++) g_object_unref (x11_screen->visuals[i]); g_free (x11_screen->visuals); g_free (x11_screen->window_manager_name); G_OBJECT_CLASS (gdk_x11_screen_parent_class)->finalize (object); } /** * gdk_x11_screen_get_monitor_output: * @screen: a #GdkX11Screen * @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen) * * Gets the XID of the specified output/monitor. * If the X server does not support version 1.2 of the RANDR * extension, 0 is returned. * * Returns: the XID of the monitor */ XID gdk_x11_screen_get_monitor_output (GdkX11Screen *x11_screen, gint monitor_num) { GdkX11Display *x11_display = GDK_X11_DISPLAY (x11_screen->display); GdkX11Monitor *monitor; g_return_val_if_fail (monitor_num >= 0, None); g_return_val_if_fail (monitor_num < x11_display->monitors->len, None); monitor = x11_display->monitors->pdata[monitor_num]; return monitor->output; } static int get_current_desktop (GdkX11Screen *screen) { Display *display; Window win; Atom current_desktop, type; int format; unsigned long n_items, bytes_after; unsigned char *data_return = NULL; int workspace = 0; if (!gdk_x11_screen_supports_net_wm_hint (screen, g_intern_static_string ("_NET_CURRENT_DESKTOP"))) return workspace; display = GDK_DISPLAY_XDISPLAY (GDK_SCREEN_DISPLAY (screen)); win = XRootWindow (display, gdk_x11_screen_get_screen_number (screen)); current_desktop = XInternAtom (display, "_NET_CURRENT_DESKTOP", True); XGetWindowProperty (display, win, current_desktop, 0, G_MAXLONG, False, XA_CARDINAL, &type, &format, &n_items, &bytes_after, &data_return); if (type == XA_CARDINAL && format == 32 && n_items > 0) workspace = ((long *) data_return)[0]; if (data_return) XFree (data_return); return workspace; } void gdk_x11_screen_get_work_area (GdkX11Screen *x11_screen, GdkRectangle *area) { Atom workarea; Atom type; Window win; int format; gulong num; gulong leftovers; gulong max_len = 4 * 32; guchar *ret_workarea = NULL; long *workareas; int result; int desktop; Display *display; display = GDK_SCREEN_XDISPLAY (x11_screen); workarea = XInternAtom (display, "_NET_WORKAREA", True); /* Defaults in case of error */ area->x = 0; area->y = 0; area->width = WidthOfScreen (x11_screen->xscreen); area->height = HeightOfScreen (x11_screen->xscreen); if (!gdk_x11_screen_supports_net_wm_hint (x11_screen, g_intern_static_string ("_NET_WORKAREA"))) return; if (workarea == None) return; win = XRootWindow (display, gdk_x11_screen_get_screen_number (x11_screen)); result = XGetWindowProperty (display, win, workarea, 0, max_len, False, AnyPropertyType, &type, &format, &num, &leftovers, &ret_workarea); if (result != Success || type == None || format == 0 || leftovers || num % 4 != 0) goto out; desktop = get_current_desktop (x11_screen); if (desktop + 1 > num / 4) /* fvwm gets this wrong */ goto out; workareas = (long *) ret_workarea; area->x = workareas[desktop * 4]; area->y = workareas[desktop * 4 + 1]; area->width = workareas[desktop * 4 + 2]; area->height = workareas[desktop * 4 + 3]; area->x /= x11_screen->window_scale; area->y /= x11_screen->window_scale; area->width /= x11_screen->window_scale; area->height /= x11_screen->window_scale; out: if (ret_workarea) XFree (ret_workarea); } /** * gdk_x11_screen_get_xscreen: * @screen: a #GdkX11Screen * * Returns the screen of a #GdkX11Screen. * * Returns: (transfer none): an Xlib Screen* */ Screen * gdk_x11_screen_get_xscreen (GdkX11Screen *screen) { return screen->xscreen; } /** * gdk_x11_screen_get_screen_number: * @screen: a #GdkX11Screen * * Returns the index of a #GdkX11Screen. * * Returns: the position of @screen among the screens * of its display */ int gdk_x11_screen_get_screen_number (GdkX11Screen *screen) { return screen->screen_num; } static GdkX11Monitor * find_monitor_by_output (GdkX11Display *x11_display, XID output) { int i; for (i = 0; i < x11_display->monitors->len; i++) { GdkX11Monitor *monitor = x11_display->monitors->pdata[i]; if (monitor->output == output) return monitor; } return NULL; } static GdkSubpixelLayout translate_subpixel_order (int subpixel) { switch (subpixel) { case 1: return GDK_SUBPIXEL_LAYOUT_HORIZONTAL_RGB; case 2: return GDK_SUBPIXEL_LAYOUT_HORIZONTAL_BGR; case 3: return GDK_SUBPIXEL_LAYOUT_VERTICAL_RGB; case 4: return GDK_SUBPIXEL_LAYOUT_VERTICAL_BGR; case 5: return GDK_SUBPIXEL_LAYOUT_NONE; default: return GDK_SUBPIXEL_LAYOUT_UNKNOWN; } } static gboolean init_randr15 (GdkX11Screen *x11_screen, gboolean *changed) { #ifdef HAVE_RANDR15 GdkDisplay *display = GDK_SCREEN_DISPLAY (x11_screen); GdkX11Display *x11_display = GDK_X11_DISPLAY (display); XRRScreenResources *resources; RROutput primary_output = None; RROutput first_output = None; int i; XRRMonitorInfo *rr_monitors; int num_rr_monitors; int old_primary; if (!x11_display->have_randr15) return FALSE; resources = XRRGetScreenResourcesCurrent (x11_screen->xdisplay, x11_screen->xroot_window); if (!resources) return FALSE; rr_monitors = XRRGetMonitors (x11_screen->xdisplay, x11_screen->xroot_window, True, &num_rr_monitors); if (!rr_monitors) return FALSE; for (i = 0; i < x11_display->monitors->len; i++) { GdkX11Monitor *monitor = x11_display->monitors->pdata[i]; monitor->add = FALSE; monitor->remove = TRUE; } for (i = 0; i < num_rr_monitors; i++) { RROutput output = rr_monitors[i].outputs[0]; XRROutputInfo *output_info; GdkX11Monitor *monitor; GdkRectangle geometry; GdkRectangle newgeo; char *name; int refresh_rate = 0; gdk_x11_display_error_trap_push (display); output_info = XRRGetOutputInfo (x11_screen->xdisplay, resources, output); if (gdk_x11_display_error_trap_pop (display)) continue; if (output_info == NULL) continue; if (output_info->connection == RR_Disconnected) { XRRFreeOutputInfo (output_info); continue; } if (first_output == None) first_output = output; if (output_info->crtc) { XRRCrtcInfo *crtc = XRRGetCrtcInfo (x11_screen->xdisplay, resources, output_info->crtc); int j; for (j = 0; j < resources->nmode; j++) { XRRModeInfo *xmode = &resources->modes[j]; if (xmode->id == crtc->mode) { if (xmode->hTotal != 0 && xmode->vTotal != 0) refresh_rate = (1000 * xmode->dotClock) / (xmode->hTotal * xmode->vTotal); break; } } XRRFreeCrtcInfo (crtc); } monitor = find_monitor_by_output (x11_display, output); if (monitor) monitor->remove = FALSE; else { monitor = g_object_new (GDK_TYPE_X11_MONITOR, "display", display, NULL); monitor->output = output; monitor->add = TRUE; g_ptr_array_add (x11_display->monitors, monitor); } gdk_monitor_get_geometry (GDK_MONITOR (monitor), &geometry); name = g_strndup (output_info->name, output_info->nameLen); newgeo.x = rr_monitors[i].x / x11_screen->window_scale; newgeo.y = rr_monitors[i].y / x11_screen->window_scale; newgeo.width = rr_monitors[i].width / x11_screen->window_scale; newgeo.height = rr_monitors[i].height / x11_screen->window_scale; if (newgeo.x != geometry.x || newgeo.y != geometry.y || newgeo.width != geometry.width || newgeo.height != geometry.height || rr_monitors[i].mwidth != gdk_monitor_get_width_mm (GDK_MONITOR (monitor)) || rr_monitors[i].mheight != gdk_monitor_get_height_mm (GDK_MONITOR (monitor)) || g_strcmp0 (name, gdk_monitor_get_model (GDK_MONITOR (monitor)))) *changed = TRUE; gdk_monitor_set_position (GDK_MONITOR (monitor), newgeo.x, newgeo.y); gdk_monitor_set_size (GDK_MONITOR (monitor), newgeo.width, newgeo.height); g_object_notify (G_OBJECT (monitor), "workarea"); gdk_monitor_set_physical_size (GDK_MONITOR (monitor), rr_monitors[i].mwidth, rr_monitors[i].mheight); gdk_monitor_set_subpixel_layout (GDK_MONITOR (monitor), translate_subpixel_order (output_info->subpixel_order)); gdk_monitor_set_refresh_rate (GDK_MONITOR (monitor), refresh_rate); gdk_monitor_set_scale_factor (GDK_MONITOR (monitor), x11_screen->window_scale); gdk_monitor_set_model (GDK_MONITOR (monitor), name); g_free (name); if (rr_monitors[i].primary) primary_output = monitor->output; XRRFreeOutputInfo (output_info); } XRRFreeMonitors (rr_monitors); XRRFreeScreenResources (resources); for (i = x11_display->monitors->len - 1; i >= 0; i--) { GdkX11Monitor *monitor = x11_display->monitors->pdata[i]; if (monitor->add) { gdk_display_monitor_added (display, GDK_MONITOR (monitor)); *changed = TRUE; } else if (monitor->remove) { g_object_ref (monitor); g_ptr_array_remove (x11_display->monitors, monitor); gdk_display_monitor_removed (display, GDK_MONITOR (monitor)); g_object_unref (monitor); *changed = TRUE; } } old_primary = x11_display->primary_monitor; x11_display->primary_monitor = 0; for (i = 0; i < x11_display->monitors->len; ++i) { GdkX11Monitor *monitor = x11_display->monitors->pdata[i]; if (monitor->output == primary_output) { x11_display->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 (gdk_monitor_get_model (GDK_MONITOR (monitor)), "LVDS", 4) == 0) { x11_display->primary_monitor = i; break; } /* No primary specified and no LVDS found */ if (monitor->output == first_output) x11_display->primary_monitor = i; } if (x11_display->primary_monitor != old_primary) *changed = TRUE; return x11_display->monitors->len > 0; #endif return FALSE; } static gboolean init_randr13 (GdkX11Screen *x11_screen, gboolean *changed) { #ifdef HAVE_RANDR GdkDisplay *display = GDK_SCREEN_DISPLAY (x11_screen); GdkX11Display *x11_display = GDK_X11_DISPLAY (display); XRRScreenResources *resources; RROutput primary_output = None; RROutput first_output = None; int i; int old_primary; if (!x11_display->have_randr13) return FALSE; resources = XRRGetScreenResourcesCurrent (x11_screen->xdisplay, x11_screen->xroot_window); if (!resources) return FALSE; for (i = 0; i < x11_display->monitors->len; i++) { GdkX11Monitor *monitor = x11_display->monitors->pdata[i]; monitor->add = FALSE; monitor->remove = TRUE; } for (i = 0; i < resources->noutput; ++i) { RROutput output = resources->outputs[i]; XRROutputInfo *output_info = XRRGetOutputInfo (x11_screen->xdisplay, resources, output); if (output_info->connection == RR_Disconnected) { XRRFreeOutputInfo (output_info); continue; } if (output_info->crtc) { GdkX11Monitor *monitor; XRRCrtcInfo *crtc = XRRGetCrtcInfo (x11_screen->xdisplay, resources, output_info->crtc); char *name; GdkRectangle geometry; GdkRectangle newgeo; int j; int refresh_rate = 0; for (j = 0; j < resources->nmode; j++) { XRRModeInfo *xmode = &resources->modes[j]; if (xmode->id == crtc->mode) { if (xmode->hTotal != 0 && xmode->vTotal != 0) refresh_rate = (1000 * xmode->dotClock) / (xmode->hTotal * xmode->vTotal); break; } } monitor = find_monitor_by_output (x11_display, output); if (monitor) monitor->remove = FALSE; else { monitor = g_object_new (gdk_x11_monitor_get_type (), "display", display, NULL); monitor->output = output; monitor->add = TRUE; g_ptr_array_add (x11_display->monitors, monitor); } gdk_monitor_get_geometry (GDK_MONITOR (monitor), &geometry); name = g_strndup (output_info->name, output_info->nameLen); newgeo.x = crtc->x / x11_screen->window_scale; newgeo.y = crtc->y / x11_screen->window_scale; newgeo.width = crtc->width / x11_screen->window_scale; newgeo.height = crtc->height / x11_screen->window_scale; if (newgeo.x != geometry.x || newgeo.y != geometry.y || newgeo.width != geometry.width || newgeo.height != geometry.height || output_info->mm_width != gdk_monitor_get_width_mm (GDK_MONITOR (monitor)) || output_info->mm_height != gdk_monitor_get_height_mm (GDK_MONITOR (monitor)) || g_strcmp0 (name, gdk_monitor_get_model (GDK_MONITOR (monitor))) != 0) *changed = TRUE; gdk_monitor_set_position (GDK_MONITOR (monitor), newgeo.x, newgeo.y); gdk_monitor_set_size (GDK_MONITOR (monitor), newgeo.width, newgeo.height); g_object_notify (G_OBJECT (monitor), "workarea"); gdk_monitor_set_physical_size (GDK_MONITOR (monitor), output_info->mm_width, output_info->mm_height); gdk_monitor_set_subpixel_layout (GDK_MONITOR (monitor), translate_subpixel_order (output_info->subpixel_order)); gdk_monitor_set_refresh_rate (GDK_MONITOR (monitor), refresh_rate); gdk_monitor_set_scale_factor (GDK_MONITOR (monitor), x11_screen->window_scale); gdk_monitor_set_model (GDK_MONITOR (monitor), name); g_free (name); XRRFreeCrtcInfo (crtc); } XRRFreeOutputInfo (output_info); } if (resources->noutput > 0) first_output = resources->outputs[0]; XRRFreeScreenResources (resources); /* Which usable multihead data is not returned in non RandR 1.2+ X driver? */ for (i = x11_display->monitors->len - 1; i >= 0; i--) { GdkX11Monitor *monitor = x11_display->monitors->pdata[i]; if (monitor->add) { gdk_display_monitor_added (display, GDK_MONITOR (monitor)); *changed = TRUE; } else if (monitor->remove) { g_object_ref (monitor); g_ptr_array_remove (x11_display->monitors, monitor); gdk_display_monitor_removed (display, GDK_MONITOR (monitor)); g_object_unref (monitor); *changed = TRUE; } } old_primary = x11_display->primary_monitor; x11_display->primary_monitor = 0; primary_output = XRRGetOutputPrimary (x11_screen->xdisplay, x11_screen->xroot_window); for (i = 0; i < x11_display->monitors->len; ++i) { GdkX11Monitor *monitor = x11_display->monitors->pdata[i]; if (monitor->output == primary_output) { x11_display->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 (gdk_monitor_get_model (GDK_MONITOR (monitor)), "LVDS", 4) == 0) { x11_display->primary_monitor = i; break; } /* No primary specified and no LVDS found */ if (monitor->output == first_output) x11_display->primary_monitor = i; } if (x11_display->primary_monitor != old_primary) *changed = TRUE; return x11_display->monitors->len > 0; #endif return FALSE; } static void init_no_multihead (GdkX11Screen *x11_screen, gboolean *changed) { GdkX11Display *x11_display = GDK_X11_DISPLAY (x11_screen->display); GdkX11Monitor *monitor; GdkRectangle geometry; int width_mm, height_mm; int width, height; int i; for (i = 0; i < x11_display->monitors->len; i++) { GdkX11Monitor *monitor = x11_display->monitors->pdata[i]; monitor->add = FALSE; monitor->remove = TRUE; } monitor = find_monitor_by_output (x11_display, 0); if (monitor) monitor->remove = FALSE; else { monitor = g_object_new (gdk_x11_monitor_get_type (), "display", x11_display, NULL); monitor->output = 0; monitor->add = TRUE; g_ptr_array_add (x11_display->monitors, monitor); } width_mm = WidthMMOfScreen (x11_screen->xscreen); height_mm = HeightMMOfScreen (x11_screen->xscreen); width = WidthOfScreen (x11_screen->xscreen); height = HeightOfScreen (x11_screen->xscreen); gdk_monitor_get_geometry (GDK_MONITOR (monitor), &geometry); if (0 != geometry.x || 0 != geometry.y || width != geometry.width || height != geometry.height || width_mm != gdk_monitor_get_width_mm (GDK_MONITOR (monitor)) || height_mm != gdk_monitor_get_height_mm (GDK_MONITOR (monitor))) *changed = TRUE; gdk_monitor_set_position (GDK_MONITOR (monitor), 0, 0); gdk_monitor_set_size (GDK_MONITOR (monitor), width, height); g_object_notify (G_OBJECT (monitor), "workarea"); gdk_monitor_set_physical_size (GDK_MONITOR (monitor), width_mm, height_mm); gdk_monitor_set_scale_factor (GDK_MONITOR (monitor), x11_screen->window_scale); if (x11_display->primary_monitor != 0) *changed = TRUE; x11_display->primary_monitor = 0; for (i = x11_display->monitors->len - 1; i >= 0; i--) { GdkX11Monitor *monitor = x11_display->monitors->pdata[i]; if (monitor->add) { gdk_display_monitor_added (GDK_DISPLAY (x11_display), GDK_MONITOR (monitor)); *changed = TRUE; } else if (monitor->remove) { g_object_ref (monitor); g_ptr_array_remove (x11_display->monitors, monitor); gdk_display_monitor_removed (GDK_DISPLAY (x11_display), GDK_MONITOR (monitor)); g_object_unref (monitor); *changed = TRUE; } } } static gboolean init_multihead (GdkX11Screen *screen) { gboolean any_changed = FALSE; if (!init_randr15 (screen, &any_changed) && !init_randr13 (screen, &any_changed)) init_no_multihead (screen, &any_changed); return any_changed; } GdkX11Screen * _gdk_x11_screen_new (GdkDisplay *display, gint screen_number, gboolean setup_display) { GdkX11Screen *x11_screen; GdkX11Display *display_x11 = GDK_X11_DISPLAY (display); const char *scale_str; x11_screen = g_object_new (GDK_TYPE_X11_SCREEN, NULL); x11_screen->display = display; x11_screen->xdisplay = display_x11->xdisplay; x11_screen->xscreen = ScreenOfDisplay (display_x11->xdisplay, screen_number); x11_screen->screen_num = screen_number; x11_screen->xroot_window = RootWindow (display_x11->xdisplay, screen_number); x11_screen->wmspec_check_window = None; /* we want this to be always non-null */ x11_screen->window_manager_name = g_strdup ("unknown"); scale_str = g_getenv ("GDK_SCALE"); if (scale_str) { x11_screen->fixed_window_scale = TRUE; x11_screen->window_scale = atol (scale_str); if (x11_screen->window_scale == 0) x11_screen->window_scale = 1; } else x11_screen->window_scale = 1; init_randr_support (x11_screen); init_multihead (x11_screen); _gdk_x11_screen_init_visuals (x11_screen, setup_display); return x11_screen; } void _gdk_x11_screen_set_window_scale (GdkX11Screen *x11_screen, gint scale) { GdkX11Display *x11_display = GDK_X11_DISPLAY (x11_screen->display); GList *toplevels, *l; int i; if (x11_screen->window_scale == scale) return; x11_screen->window_scale = scale; toplevels = gdk_x11_display_get_toplevel_windows (x11_screen->display); for (l = toplevels; l != NULL; l = l->next) { GdkWindow *window = l->data; _gdk_x11_window_set_window_scale (window, scale); } for (i = 0; i < x11_display->monitors->len; i++) { GdkMonitor *monitor = GDK_MONITOR (x11_display->monitors->pdata[i]); gdk_monitor_set_scale_factor (monitor, scale); } } static void init_randr_support (GdkX11Screen *x11_screen) { /* NB: This is also needed for XSettings, so don't remove. */ XSelectInput (GDK_SCREEN_XDISPLAY (x11_screen), x11_screen->xroot_window, StructureNotifyMask); #ifdef HAVE_RANDR if (!GDK_X11_DISPLAY (GDK_SCREEN_DISPLAY (x11_screen))->have_randr12) return; XRRSelectInput (GDK_SCREEN_XDISPLAY (x11_screen), x11_screen->xroot_window, RRScreenChangeNotifyMask | RRCrtcChangeNotifyMask | RROutputPropertyNotifyMask); #endif } static void process_monitors_change (GdkX11Screen *screen) { init_multihead (screen); } void _gdk_x11_screen_size_changed (GdkX11Screen *screen, const XEvent *event) { #ifdef HAVE_RANDR GdkX11Display *display_x11; display_x11 = GDK_X11_DISPLAY (GDK_SCREEN_DISPLAY (screen)); if (display_x11->have_randr13 && event->type == ConfigureNotify) return; XRRUpdateConfiguration ((XEvent *) event); #else if (event->type != ConfigureNotify) return; #endif process_monitors_change (screen); } void _gdk_x11_screen_get_edge_monitors (GdkX11Screen *x11_screen, gint *top, gint *bottom, gint *left, gint *right) { #ifdef HAVE_XFREE_XINERAMA gint top_most_pos = HeightOfScreen (x11_screen->xscreen); gint left_most_pos = WidthOfScreen (x11_screen->xscreen); gint bottom_most_pos = 0; gint right_most_pos = 0; gint i; XineramaScreenInfo *x_monitors; int x_n_monitors; #endif *top = *bottom = *left = *right = -1; #ifdef HAVE_XFREE_XINERAMA if (!XineramaIsActive (x11_screen->xdisplay)) return; x_monitors = XineramaQueryScreens (x11_screen->xdisplay, &x_n_monitors); if (x_n_monitors <= 0 || x_monitors == NULL) { if (x_monitors) XFree (x_monitors); return; } for (i = 0; i < x_n_monitors; i++) { if (left && left_most_pos > x_monitors[i].x_org) { left_most_pos = x_monitors[i].x_org; *left = i; } if (right && right_most_pos < x_monitors[i].x_org + x_monitors[i].width) { right_most_pos = x_monitors[i].x_org + x_monitors[i].width; *right = i; } if (top && top_most_pos > x_monitors[i].y_org) { top_most_pos = x_monitors[i].y_org; *top = i; } if (bottom && bottom_most_pos < x_monitors[i].y_org + x_monitors[i].height) { bottom_most_pos = x_monitors[i].y_org + x_monitors[i].height; *bottom = i; } } XFree (x_monitors); #endif } void _gdk_x11_screen_window_manager_changed (GdkX11Screen *screen) { g_signal_emit (screen, signals[WINDOW_MANAGER_CHANGED], 0); } gboolean gdk_x11_screen_get_setting (GdkX11Screen *x11_screen, const gchar *name, GValue *value) { const GValue *setting; if (x11_screen->xsettings == NULL) goto out; setting = g_hash_table_lookup (x11_screen->xsettings, name); if (setting == NULL) goto out; if (!g_value_transform (setting, value)) { g_warning ("Cannot transform xsetting %s of type %s to type %s\n", name, g_type_name (G_VALUE_TYPE (setting)), g_type_name (G_VALUE_TYPE (value))); goto out; } return TRUE; out: return _gdk_x11_screen_get_xft_setting (x11_screen, name, value); } static void cleanup_atoms(gpointer data) { NetWmSupportedAtoms *supported_atoms = data; if (supported_atoms->atoms) XFree (supported_atoms->atoms); g_free (supported_atoms); } static Window get_net_supporting_wm_check (GdkX11Screen *screen, Window window) { GdkDisplay *display; Atom type; gint format; gulong n_items; gulong bytes_after; guchar *data; Window value; display = screen->display; type = None; data = NULL; value = None; gdk_x11_display_error_trap_push (display); XGetWindowProperty (screen->xdisplay, window, gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTING_WM_CHECK"), 0, G_MAXLONG, False, XA_WINDOW, &type, &format, &n_items, &bytes_after, &data); gdk_x11_display_error_trap_pop_ignored (display); if (type == XA_WINDOW) value = *(Window *)data; if (data) XFree (data); return value; } static void fetch_net_wm_check_window (GdkX11Screen *x11_screen) { GdkDisplay *display; Window window; GTimeVal tv; gint error; display = x11_screen->display; g_return_if_fail (GDK_X11_DISPLAY (display)->trusted_client); if (x11_screen->wmspec_check_window != None) return; /* already have it */ g_get_current_time (&tv); if (ABS (tv.tv_sec - x11_screen->last_wmspec_check_time) < 15) return; /* we've checked recently */ window = get_net_supporting_wm_check (x11_screen, x11_screen->xroot_window); if (window == None) return; if (window != get_net_supporting_wm_check (x11_screen, window)) return; gdk_x11_display_error_trap_push (display); /* Find out if this WM goes away, so we can reset everything. */ XSelectInput (x11_screen->xdisplay, window, StructureNotifyMask); error = gdk_x11_display_error_trap_pop (display); if (!error) { /* We check the window property again because after XGetWindowProperty() * and before XSelectInput() the window may have been recycled in such a * way that XSelectInput() doesn't fail but the window is no longer what * we want. */ if (window != get_net_supporting_wm_check (x11_screen, window)) return; x11_screen->wmspec_check_window = window; x11_screen->last_wmspec_check_time = tv.tv_sec; x11_screen->need_refetch_net_supported = TRUE; x11_screen->need_refetch_wm_name = TRUE; /* Careful, reentrancy */ _gdk_x11_screen_window_manager_changed (x11_screen); } } /** * gdk_x11_screen_supports_net_wm_hint: * @screen: the relevant #GdkX11Screen. * @property: a property atom. * * This function is specific to the X11 backend of GDK, and indicates * whether the window manager supports a certain hint from the * [Extended Window Manager Hints](http://www.freedesktop.org/Standards/wm-spec) specification. * * When using this function, keep in mind that the window manager * can change over time; so you shouldn’t use this function in * a way that impacts persistent application state. A common bug * is that your application can start up before the window manager * does when the user logs in, and before the window manager starts * gdk_x11_screen_supports_net_wm_hint() will return %FALSE for every property. * You can monitor the window_manager_changed signal on #GdkX11Screen to detect * a window manager change. * * Returns: %TRUE if the window manager supports @property **/ gboolean gdk_x11_screen_supports_net_wm_hint (GdkX11Screen *x11_screen, GdkAtom property) { gulong i; NetWmSupportedAtoms *supported_atoms; GdkDisplay *display; Atom atom; display = x11_screen->display; if (!G_LIKELY (GDK_X11_DISPLAY (display)->trusted_client)) return FALSE; supported_atoms = g_object_get_data (G_OBJECT (x11_screen), "gdk-net-wm-supported-atoms"); if (!supported_atoms) { supported_atoms = g_new0 (NetWmSupportedAtoms, 1); g_object_set_data_full (G_OBJECT (x11_screen), "gdk-net-wm-supported-atoms", supported_atoms, cleanup_atoms); } fetch_net_wm_check_window (x11_screen); if (x11_screen->wmspec_check_window == None) return FALSE; if (x11_screen->need_refetch_net_supported) { /* WM has changed since we last got the supported list, * refetch it. */ Atom type; gint format; gulong bytes_after; x11_screen->need_refetch_net_supported = FALSE; if (supported_atoms->atoms) XFree (supported_atoms->atoms); supported_atoms->atoms = NULL; supported_atoms->n_atoms = 0; XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), x11_screen->xroot_window, gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTED"), 0, G_MAXLONG, False, XA_ATOM, &type, &format, &supported_atoms->n_atoms, &bytes_after, (guchar **)&supported_atoms->atoms); if (type != XA_ATOM) return FALSE; } if (supported_atoms->atoms == NULL) return FALSE; atom = gdk_x11_atom_to_xatom_for_display (display, property); for (i = 0; i < supported_atoms->n_atoms; i++) { if (supported_atoms->atoms[i] == atom) return TRUE; } return FALSE; } /** * gdk_x11_screen_get_window_manager_name: * @screen: a #GdkX11Screen * * Returns the name of the window manager for @screen. * * Returns: the name of the window manager screen @screen, or * "unknown" if the window manager is unknown. The string is owned by GDK * and should not be freed. **/ const char* gdk_x11_screen_get_window_manager_name (GdkX11Screen *x11_screen) { GdkDisplay *display; display = x11_screen->display; if (!G_LIKELY (GDK_X11_DISPLAY (display)->trusted_client)) return x11_screen->window_manager_name; fetch_net_wm_check_window (x11_screen); if (x11_screen->need_refetch_wm_name) { /* Get the name of the window manager */ x11_screen->need_refetch_wm_name = FALSE; g_free (x11_screen->window_manager_name); x11_screen->window_manager_name = g_strdup ("unknown"); if (x11_screen->wmspec_check_window != None) { Atom type; gint format; gulong n_items; gulong bytes_after; gchar *name; name = NULL; gdk_x11_display_error_trap_push (display); XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), x11_screen->wmspec_check_window, gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_NAME"), 0, G_MAXLONG, False, gdk_x11_get_xatom_by_name_for_display (display, "UTF8_STRING"), &type, &format, &n_items, &bytes_after, (guchar **)&name); gdk_x11_display_error_trap_pop_ignored (display); if (name != NULL) { g_free (x11_screen->window_manager_name); x11_screen->window_manager_name = g_strdup (name); XFree (name); } } } return x11_screen->window_manager_name; } static void gdk_x11_screen_class_init (GdkX11ScreenClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->dispose = gdk_x11_screen_dispose; object_class->finalize = gdk_x11_screen_finalize; signals[WINDOW_MANAGER_CHANGED] = g_signal_new (g_intern_static_string ("window-manager-changed"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GdkX11ScreenClass, window_manager_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); } static guint32 get_netwm_cardinal_property (GdkX11Screen *x11_screen, const gchar *name) { GdkAtom atom; guint32 prop = 0; Atom type; gint format; gulong nitems; gulong bytes_after; guchar *data; atom = g_intern_static_string (name); if (!gdk_x11_screen_supports_net_wm_hint (x11_screen, atom)) return 0; XGetWindowProperty (x11_screen->xdisplay, x11_screen->xroot_window, gdk_x11_get_xatom_by_name_for_display (GDK_SCREEN_DISPLAY (x11_screen), name), 0, G_MAXLONG, False, XA_CARDINAL, &type, &format, &nitems, &bytes_after, &data); if (type == XA_CARDINAL) { prop = *(gulong *)data; XFree (data); } return prop; } /** * gdk_x11_screen_get_number_of_desktops: * @screen: a #GdkX11Screen * * Returns the number of workspaces for @screen when running under a * window manager that supports multiple workspaces, as described * in the * [Extended Window Manager Hints](http://www.freedesktop.org/Standards/wm-spec) specification. * * Returns: the number of workspaces, or 0 if workspaces are not supported */ guint32 gdk_x11_screen_get_number_of_desktops (GdkX11Screen *screen) { return get_netwm_cardinal_property (screen, "_NET_NUMBER_OF_DESKTOPS"); } /** * gdk_x11_screen_get_current_desktop: * @screen: a #GdkX11Screen * * Returns the current workspace for @screen when running under a * window manager that supports multiple workspaces, as described * in the * [Extended Window Manager Hints](http://www.freedesktop.org/Standards/wm-spec) specification. * * Returns: the current workspace, or 0 if workspaces are not supported */ guint32 gdk_x11_screen_get_current_desktop (GdkX11Screen *screen) { return get_netwm_cardinal_property (screen, "_NET_CURRENT_DESKTOP"); }