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Diffstat (limited to 'src/core/monitor.c')
| -rw-r--r-- | src/core/monitor.c | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/src/core/monitor.c b/src/core/monitor.c new file mode 100644 index 000000000..05d4f2b41 --- /dev/null +++ b/src/core/monitor.c @@ -0,0 +1,356 @@ +/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ + +/* + * Copyright (C) 2001, 2002 Havoc Pennington + * Copyright (C) 2002, 2003 Red Hat Inc. + * Some ICCCM manager selection code derived from fvwm2, + * Copyright (C) 2001 Dominik Vogt, Matthias Clasen, and fvwm2 team + * Copyright (C) 2003 Rob Adams + * Copyright (C) 2004-2006 Elijah Newren + * Copyright (C) 2013 Red Hat Inc. + * + * 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. + */ + +#include "config.h" + +#include <clutter/clutter.h> + +#ifdef HAVE_RANDR +#include <X11/extensions/Xrandr.h> +#endif + +#include "monitor-private.h" + +struct _MetaMonitorManager +{ + GObject parent_instance; + + /* Outputs refers to physical screens, + while monitor_infos refer to logical ones (aka CRTC) + They can be different if two outputs are + in clone mode + */ + MetaOutput *outputs; + int primary_monitor_index; + int n_outputs; + + MetaMonitorInfo *monitor_infos; + int n_monitor_infos; + +#ifdef HAVE_RANDR + Display *xdisplay; +#endif +}; + +struct _MetaMonitorManagerClass +{ + GObjectClass parent_class; +}; + +enum { + MONITORS_CHANGED, + SIGNALS_LAST +}; + +static int signals[SIGNALS_LAST]; + +G_DEFINE_TYPE (MetaMonitorManager, meta_monitor_manager, G_TYPE_OBJECT); + +static void +make_dummy_monitor_config (MetaMonitorManager *manager) +{ + manager->monitor_infos = g_new0 (MetaMonitorInfo, 1); + manager->n_monitor_infos = 1; + + manager->monitor_infos[0].number = 0; + manager->monitor_infos[0].xinerama_index = 0; + manager->monitor_infos[0].rect.x = 0; + manager->monitor_infos[0].rect.y = 0; + if (manager->xdisplay) + { + Screen *screen = ScreenOfDisplay (manager->xdisplay, + DefaultScreen (manager->xdisplay)); + + manager->monitor_infos[0].rect.width = WidthOfScreen (screen); + manager->monitor_infos[0].rect.height = HeightOfScreen (screen); + } + else + { + manager->monitor_infos[0].rect.width = 1024; + manager->monitor_infos[0].rect.height = 768; + } + manager->monitor_infos[0].refresh_rate = 60.0f; + manager->monitor_infos[0].is_primary = TRUE; + manager->monitor_infos[0].in_fullscreen = -1; + manager->monitor_infos[0].output_id = 1; + + manager->outputs = g_new0 (MetaOutput, 1); + manager->n_outputs = 1; + + manager->outputs[0].monitor = &manager->monitor_infos[0]; + manager->outputs[0].name = g_strdup ("LVDS"); + manager->outputs[0].width_mm = 222; + manager->outputs[0].height_mm = 125; + manager->outputs[0].subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN; +} + +#ifdef HAVE_RANDR + +/* In the case of multiple outputs of a single crtc (mirroring), we consider one of the + * outputs the "main". This is the one we consider "owning" the windows, so if + * the mirroring is changed to a dual monitor setup then the windows are moved to the + * crtc that now has that main output. If one of the outputs is the primary that is + * always the main, otherwise we just use the first. + */ +static void +find_main_output_for_crtc (MetaMonitorManager *manager, + XRRScreenResources *resources, + XRRCrtcInfo *crtc, + MetaMonitorInfo *info, + GArray *outputs) +{ + XRROutputInfo *output; + RROutput primary_output; + int i; + + primary_output = XRRGetOutputPrimary (manager->xdisplay, + DefaultRootWindow (manager->xdisplay)); + + for (i = 0; i < crtc->noutput; i++) + { + output = XRRGetOutputInfo (manager->xdisplay, resources, crtc->outputs[i]); + + if (output->connection != RR_Disconnected) + { + MetaOutput meta_output; + + meta_output.name = g_strdup (output->name); + meta_output.width_mm = output->mm_width; + meta_output.height_mm = output->mm_height; + meta_output.subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN; + + g_array_append_val (outputs, meta_output); + + if (crtc->outputs[i] == primary_output) + { + info->output_id = crtc->outputs[i]; + info->is_primary = TRUE; + manager->primary_monitor_index = info->number; + } + else if (info->output_id == 0) + { + info->output_id = crtc->outputs[i]; + } + } + + XRRFreeOutputInfo (output); + } +} + +static void +read_monitor_infos_from_xrandr (MetaMonitorManager *manager) +{ + XRRScreenResources *resources; + GArray *outputs; + int i, j; + + resources = XRRGetScreenResourcesCurrent (manager->xdisplay, + DefaultRootWindow (manager->xdisplay)); + if (!resources) + return make_dummy_monitor_config (manager); + + outputs = g_array_new (FALSE, TRUE, sizeof (MetaOutput)); + + manager->n_outputs = 0; + manager->n_monitor_infos = resources->ncrtc; + + manager->monitor_infos = g_new0 (MetaMonitorInfo, manager->n_monitor_infos); + + for (i = 0; i < resources->ncrtc; i++) + { + XRRCrtcInfo *crtc; + MetaMonitorInfo *info; + + crtc = XRRGetCrtcInfo (manager->xdisplay, resources, resources->crtcs[i]); + + info = &manager->monitor_infos[i]; + + info->number = i; + info->rect.x = crtc->x; + info->rect.y = crtc->y; + info->rect.width = crtc->width; + info->rect.height = crtc->height; + info->in_fullscreen = -1; + + for (j = 0; j < resources->nmode; j++) + { + if (resources->modes[j].id == crtc->mode) + info->refresh_rate = (resources->modes[j].dotClock / + ((float)resources->modes[j].hTotal * + resources->modes[j].vTotal)); + } + + find_main_output_for_crtc (manager, resources, crtc, info, outputs); + + XRRFreeCrtcInfo (crtc); + } + + manager->n_outputs = outputs->len; + manager->outputs = (void*)g_array_free (outputs, FALSE); + + XRRFreeScreenResources (resources); +} + +#endif + +/* + * meta_has_dummy_output: + * + * Returns TRUE if the only available monitor is the dummy one + * backing the ClutterStage window. + */ +static gboolean +has_dummy_output (void) +{ + return FALSE; +} + +static void +meta_monitor_manager_init (MetaMonitorManager *manager) +{ +} + +static void +read_current_config (MetaMonitorManager *manager) +{ + if (has_dummy_output ()) + return make_dummy_monitor_config (manager); + +#ifdef HAVE_RANDR + return read_monitor_infos_from_xrandr (manager); +#endif +} + +static MetaMonitorManager * +meta_monitor_manager_new (Display *display) +{ + MetaMonitorManager *manager; + + manager = g_object_new (META_TYPE_MONITOR_MANAGER, NULL); + + manager->xdisplay = display; + + read_current_config (manager); + return manager; +} + +static void +free_output_array (MetaOutput *old_outputs, + int n_old_outputs) +{ + int i; + + for (i = 0; i < n_old_outputs; i++) + g_free (old_outputs[i].name); + g_free (old_outputs); +} + +static void +meta_monitor_manager_finalize (GObject *object) +{ + MetaMonitorManager *manager = META_MONITOR_MANAGER (object); + + free_output_array (manager->outputs, manager->n_outputs); + g_free (manager->monitor_infos); + + G_OBJECT_CLASS (meta_monitor_manager_parent_class)->finalize (object); +} + +static void +meta_monitor_manager_class_init (MetaMonitorManagerClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->finalize = meta_monitor_manager_finalize; + + signals[MONITORS_CHANGED] = + g_signal_new ("monitors-changed", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST, + 0, + NULL, NULL, NULL, + G_TYPE_NONE, 0); +} + +static MetaMonitorManager *global_manager; + +void +meta_monitor_manager_initialize (Display *display) +{ + global_manager = meta_monitor_manager_new (display); +} + +MetaMonitorManager * +meta_monitor_manager_get (void) +{ + g_assert (global_manager != NULL); + + return global_manager; +} + +MetaMonitorInfo * +meta_monitor_manager_get_monitor_infos (MetaMonitorManager *manager, + int *n_infos) +{ + *n_infos = manager->n_monitor_infos; + return manager->monitor_infos; +} + +MetaOutput * +meta_monitor_manager_get_outputs (MetaMonitorManager *manager, + int *n_outputs) +{ + *n_outputs = manager->n_outputs; + return manager->outputs; +} + +int +meta_monitor_manager_get_primary_index (MetaMonitorManager *manager) +{ + return manager->primary_monitor_index; +} + +void +meta_monitor_manager_invalidate (MetaMonitorManager *manager) +{ + MetaOutput *old_outputs; + MetaMonitorInfo *old_monitor_infos; + int n_old_outputs; + + /* Save the old monitor infos, so they stay valid during the update */ + old_outputs = manager->outputs; + n_old_outputs = manager->n_outputs; + old_monitor_infos = manager->monitor_infos; + + read_current_config (manager); + + g_signal_emit (manager, signals[MONITORS_CHANGED], 0); + + g_free (old_monitor_infos); + free_output_array (old_outputs, n_old_outputs); +} + |