/* * 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); static void process_monitors_change (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); 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); 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, int monitor_num) { GdkX11Display *x11_display = GDK_X11_DISPLAY (x11_screen->display); GdkX11Monitor *monitor; XID output; g_return_val_if_fail (monitor_num >= 0, None); g_return_val_if_fail (monitor_num < g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)), None); monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), monitor_num); output = monitor->output; g_object_unref (monitor); return 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; } gboolean _gdk_x11_screen_get_monitor_work_area (GdkX11Screen *x11_screen, GdkMonitor *monitor, GdkRectangle *area) { Display *xdisplay; Atom net_workareas; int current_desktop; char *workareas_dn_name; Atom workareas_dn; int screen_number; Window xroot; int result; Atom type; int format; gulong num; gulong leftovers; guchar *ret_workarea; long *workareas; GdkRectangle geometry; int i; if (!gdk_x11_screen_supports_net_wm_hint (x11_screen, g_intern_static_string ("_GTK_WORKAREAS"))) return FALSE; xdisplay = gdk_x11_display_get_xdisplay (x11_screen->display); net_workareas = XInternAtom (xdisplay, "_GTK_WORKAREAS", False); if (net_workareas == None) return FALSE; current_desktop = get_current_desktop (x11_screen); workareas_dn_name = g_strdup_printf ("_GTK_WORKAREAS_D%d", current_desktop); workareas_dn = XInternAtom (xdisplay, workareas_dn_name, True); g_free (workareas_dn_name); if (workareas_dn == None) return FALSE; screen_number = gdk_x11_screen_get_screen_number (x11_screen); xroot = XRootWindow (xdisplay, screen_number); gdk_x11_display_error_trap_push (x11_screen->display); ret_workarea = NULL; result = XGetWindowProperty (xdisplay, xroot, workareas_dn, 0, G_MAXLONG, False, AnyPropertyType, &type, &format, &num, &leftovers, &ret_workarea); gdk_x11_display_error_trap_pop_ignored (x11_screen->display); if (result != Success || type == None || format == 0 || leftovers || num % 4 != 0) { XFree (ret_workarea); return FALSE; } workareas = (long *) ret_workarea; gdk_monitor_get_geometry (monitor, &geometry); *area = geometry; for (i = 0; i < num / 4; i++) { GdkRectangle work_area; work_area = (GdkRectangle) { .x = workareas[0] / x11_screen->surface_scale, .y = workareas[1] / x11_screen->surface_scale, .width = workareas[2] / x11_screen->surface_scale, .height = workareas[3] / x11_screen->surface_scale, }; if (gdk_rectangle_intersect (area, &work_area, &work_area)) *area = work_area; workareas += 4; } XFree (ret_workarea); return TRUE; } 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->surface_scale; area->y /= x11_screen->surface_scale; area->width /= x11_screen->surface_scale; area->height /= x11_screen->surface_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 void notify_surface_monitor_change (GdkX11Display *display, GdkMonitor *monitor) { GHashTableIter iter; GdkSurface *surface; /* We iterate the surfaces via the hash table here because it's the only * thing that contains all the surfaces. */ if (display->xid_ht == NULL) return; g_hash_table_iter_init (&iter, display->xid_ht); while (g_hash_table_iter_next (&iter, NULL, (gpointer *)&surface)) { gdk_x11_surface_check_monitor (surface, monitor); } } static GdkX11Monitor * find_monitor_by_output (GdkX11Display *x11_display, XID output) { int i; for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)); i++) { GdkX11Monitor *monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); g_object_unref (monitor); 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) { #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; 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 < g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)); i++) { GdkX11Monitor *monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); monitor->add = FALSE; monitor->remove = TRUE; g_object_unref (monitor); } 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; char *manufacturer = NULL; 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; int j; gdk_x11_display_error_trap_push (display); crtc = XRRGetCrtcInfo (x11_screen->xdisplay, resources, output_info->crtc); if (gdk_x11_display_error_trap_pop (display)) { XRRFreeOutputInfo (output_info); continue; } 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); } /* Fetch minimal manufacturer information (PNP ID) from EDID */ { #define EDID_LENGTH 128 Atom actual_type, edid_atom; char tmp[3]; int actual_format; unsigned char *prop; unsigned long nbytes, bytes_left; Display *disp = GDK_DISPLAY_XDISPLAY (x11_display); edid_atom = XInternAtom (disp, RR_PROPERTY_RANDR_EDID, FALSE); gdk_x11_display_error_trap_push (display); XRRGetOutputProperty (disp, output, edid_atom, 0, EDID_LENGTH, FALSE, FALSE, AnyPropertyType, &actual_type, &actual_format, &nbytes, &bytes_left, &prop); if (gdk_x11_display_error_trap_pop (display)) { XRRFreeOutputInfo (output_info); continue; } // Check partial EDID header (whole header: 00 ff ff ff ff ff ff 00) if (nbytes >= EDID_LENGTH && prop[0] == 0x00 && prop[1] == 0xff) { /* decode the Vendor ID from three 5 bit words packed into 2 bytes * /--08--\/--09--\ * 7654321076543210 * |\---/\---/\---/ * R C1 C2 C3 */ tmp[0] = 'A' + ((prop[8] & 0x7c) / 4) - 1; tmp[1] = 'A' + ((prop[8] & 0x3) * 8) + ((prop[9] & 0xe0) / 32) - 1; tmp[2] = 'A' + (prop[9] & 0x1f) - 1; manufacturer = g_strndup (tmp, sizeof (tmp)); } XFree(prop); #undef EDID_LENGTH } 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_list_store_append (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->surface_scale; newgeo.y = rr_monitors[i].y / x11_screen->surface_scale; newgeo.width = rr_monitors[i].width / x11_screen->surface_scale; newgeo.height = rr_monitors[i].height / x11_screen->surface_scale; gdk_monitor_set_geometry (GDK_MONITOR (monitor), &newgeo); 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->surface_scale); gdk_monitor_set_model (GDK_MONITOR (monitor), name); gdk_monitor_set_connector (GDK_MONITOR (monitor), name); gdk_monitor_set_manufacturer (GDK_MONITOR (monitor), manufacturer); g_free (manufacturer); g_free (name); if (rr_monitors[i].primary) primary_output = monitor->output; XRRFreeOutputInfo (output_info); } XRRFreeMonitors (rr_monitors); XRRFreeScreenResources (resources); for (i = g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)) - 1; i >= 0; i--) { GdkX11Monitor *monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); notify_surface_monitor_change (x11_display, GDK_MONITOR (monitor)); if (monitor->remove) { g_list_store_remove (x11_display->monitors, i); gdk_monitor_invalidate (GDK_MONITOR (monitor)); } g_object_unref (monitor); } x11_display->primary_monitor = 0; for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)); i++) { GdkX11Monitor *monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); g_object_unref (monitor); 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; } return g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)) > 0; #endif return FALSE; } static gboolean init_randr13 (GdkX11Screen *x11_screen) { #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; if (!x11_display->have_randr13) return FALSE; resources = XRRGetScreenResourcesCurrent (x11_screen->xdisplay, x11_screen->xroot_window); if (!resources) return FALSE; for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)); i++) { GdkX11Monitor *monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); monitor->add = FALSE; monitor->remove = TRUE; g_object_unref (monitor); } for (i = 0; i < resources->noutput; ++i) { RROutput output = resources->outputs[i]; XRROutputInfo *output_info; 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->connection == RR_Disconnected) { XRRFreeOutputInfo (output_info); continue; } if (output_info->crtc) { GdkX11Monitor *monitor; XRRCrtcInfo *crtc; char *name; GdkRectangle geometry; GdkRectangle newgeo; int j; int refresh_rate = 0; gdk_x11_display_error_trap_push (display); crtc = XRRGetCrtcInfo (x11_screen->xdisplay, resources, output_info->crtc); if (gdk_x11_display_error_trap_pop (display)) { XRRFreeOutputInfo (output_info); continue; } 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_list_store_append (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->surface_scale; newgeo.y = crtc->y / x11_screen->surface_scale; newgeo.width = crtc->width / x11_screen->surface_scale; newgeo.height = crtc->height / x11_screen->surface_scale; gdk_monitor_set_geometry (GDK_MONITOR (monitor), &newgeo); 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->surface_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 = g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)) - 1; i >= 0; i--) { GdkX11Monitor *monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); notify_surface_monitor_change (x11_display, GDK_MONITOR (monitor)); if (monitor->remove) { g_list_store_remove (x11_display->monitors, i); gdk_monitor_invalidate (GDK_MONITOR (monitor)); } g_object_unref (monitor); } x11_display->primary_monitor = 0; gdk_x11_display_error_trap_push (display); primary_output = XRRGetOutputPrimary (x11_screen->xdisplay, x11_screen->xroot_window); gdk_x11_display_error_trap_pop_ignored (display); for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)); i++) { GdkX11Monitor *monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); g_object_unref (monitor); 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; } return g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)) > 0; #endif return FALSE; } static void init_no_multihead (GdkX11Screen *x11_screen) { GdkX11Display *x11_display = GDK_X11_DISPLAY (x11_screen->display); GdkX11Monitor *monitor; int width_mm, height_mm; int width, height; int i; for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)); i++) { monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); monitor->add = FALSE; monitor->remove = TRUE; g_object_unref (monitor); } 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_list_store_append (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_set_geometry (GDK_MONITOR (monitor), &(GdkRectangle) { 0, 0, width, height }); gdk_monitor_set_physical_size (GDK_MONITOR (monitor), width_mm, height_mm); gdk_monitor_set_scale_factor (GDK_MONITOR (monitor), x11_screen->surface_scale); x11_display->primary_monitor = 0; for (i = g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)) - 1; i >= 0; i--) { monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); notify_surface_monitor_change (x11_display, GDK_MONITOR (monitor)); if (monitor->remove) { g_list_store_remove (x11_display->monitors, i); gdk_monitor_invalidate (GDK_MONITOR (monitor)); } g_object_unref (monitor); } } static void init_multihead (GdkX11Screen *screen) { if (!init_randr15 (screen) && !init_randr13 (screen)) init_no_multihead (screen); } GdkX11Screen * _gdk_x11_screen_new (GdkDisplay *display, int screen_number) { 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_surface_scale = TRUE; x11_screen->surface_scale = atol (scale_str); if (x11_screen->surface_scale <= 0) x11_screen->surface_scale = 1; } else x11_screen->surface_scale = 1; init_randr_support (x11_screen); init_multihead (x11_screen); return x11_screen; } void _gdk_x11_screen_set_surface_scale (GdkX11Screen *x11_screen, int scale) { GdkX11Display *x11_display = GDK_X11_DISPLAY (x11_screen->display); GList *toplevels, *l; int i; if (x11_screen->surface_scale == scale) return; x11_screen->surface_scale = scale; toplevels = gdk_x11_display_get_toplevel_windows (x11_screen->display); for (l = toplevels; l != NULL; l = l->next) { GdkSurface *surface = l->data; _gdk_x11_surface_set_surface_scale (surface, scale); } for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (x11_display->monitors)); i++) { GdkMonitor *monitor = g_list_model_get_item (G_LIST_MODEL (x11_display->monitors), i); gdk_monitor_set_scale_factor (monitor, scale); g_object_unref (monitor); } /* We re-read the monitor sizes so we can apply the new scale */ process_monitors_change (x11_screen); } 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, int *top, int *bottom, int *left, int *right) { #ifdef HAVE_XFREE_XINERAMA int top_most_pos = HeightOfScreen (x11_screen->xscreen); int left_most_pos = WidthOfScreen (x11_screen->xscreen); int bottom_most_pos = 0; int right_most_pos = 0; int 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 char *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; int 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; guint64 now; int 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 */ now = g_get_monotonic_time (); if ((now - x11_screen->last_wmspec_check_time) / 1e6 < 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 = now; 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_name: name of the WM property * * 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, const char *property_name) { 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; int 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_get_xatom_by_name_for_display (display, property_name); 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; int format; gulong n_items; gulong bytes_after; char *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, NULL, G_TYPE_NONE, 0); } static guint32 get_netwm_cardinal_property (GdkX11Screen *x11_screen, const char *name) { guint32 prop = 0; Atom type; int format; gulong nitems; gulong bytes_after; guchar *data; if (!gdk_x11_screen_supports_net_wm_hint (x11_screen, name)) 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"); }