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mutter/src/backends/x11/meta-monitor-manager-xrandr.c
Carlos Garnacho 33c070cdd5 backends/x11: Plug a leak
2018-02-27 14:10:04 +01:00

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/* -*- 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "meta-monitor-manager-xrandr.h"
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <clutter/clutter.h>
#include <X11/Xlibint.h>
#include <X11/extensions/dpms.h>
#include <X11/Xlib-xcb.h>
#include <xcb/randr.h>
#include "meta-backend-x11.h"
#include <meta/main.h>
#include <meta/errors.h>
#include "backends/meta-crtc.h"
#include "backends/meta-monitor-config-manager.h"
#include "backends/meta-logical-monitor.h"
#include "backends/meta-output.h"
#include "backends/x11/meta-crtc-xrandr.h"
#include "backends/x11/meta-gpu-xrandr.h"
#include "backends/x11/meta-output-xrandr.h"
/* Look for DPI_FALLBACK in:
* http://git.gnome.org/browse/gnome-settings-daemon/tree/plugins/xsettings/gsd-xsettings-manager.c
* for the reasoning */
#define DPI_FALLBACK 96.0
struct _MetaMonitorManagerXrandr
{
MetaMonitorManager parent_instance;
Display *xdisplay;
int rr_event_base;
int rr_error_base;
gboolean has_randr15;
/*
* The X server deals with multiple GPUs for us, soe just see what the X
* server gives us as one single GPU, even though it may actually be backed
* by multiple.
*/
MetaGpu *gpu;
xcb_timestamp_t last_xrandr_set_timestamp;
#ifdef HAVE_XRANDR15
GHashTable *tiled_monitor_atoms;
#endif /* HAVE_XRANDR15 */
float *supported_scales;
int n_supported_scales;
};
struct _MetaMonitorManagerXrandrClass
{
MetaMonitorManagerClass parent_class;
};
G_DEFINE_TYPE (MetaMonitorManagerXrandr, meta_monitor_manager_xrandr, META_TYPE_MONITOR_MANAGER);
#ifdef HAVE_XRANDR15
typedef struct _MetaMonitorXrandrData
{
Atom xrandr_name;
} MetaMonitorXrandrData;
GQuark quark_meta_monitor_xrandr_data;
#endif /* HAVE_RANDR15 */
Display *
meta_monitor_manager_xrandr_get_xdisplay (MetaMonitorManagerXrandr *manager_xrandr)
{
return manager_xrandr->xdisplay;
}
gboolean
meta_monitor_manager_xrandr_has_randr15 (MetaMonitorManagerXrandr *manager_xrandr)
{
return manager_xrandr->has_randr15;
}
static GBytes *
meta_monitor_manager_xrandr_read_edid (MetaMonitorManager *manager,
MetaOutput *output)
{
return meta_output_xrandr_read_edid (output);
}
static void
meta_monitor_manager_xrandr_set_power_save_mode (MetaMonitorManager *manager,
MetaPowerSave mode)
{
MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
CARD16 state;
switch (mode) {
case META_POWER_SAVE_ON:
state = DPMSModeOn;
break;
case META_POWER_SAVE_STANDBY:
state = DPMSModeStandby;
break;
case META_POWER_SAVE_SUSPEND:
state = DPMSModeSuspend;
break;
case META_POWER_SAVE_OFF:
state = DPMSModeOff;
break;
default:
return;
}
DPMSForceLevel (manager_xrandr->xdisplay, state);
DPMSSetTimeouts (manager_xrandr->xdisplay, 0, 0, 0);
}
static xcb_randr_rotation_t
meta_monitor_transform_to_xrandr (MetaMonitorTransform transform)
{
switch (transform)
{
case META_MONITOR_TRANSFORM_NORMAL:
return XCB_RANDR_ROTATION_ROTATE_0;
case META_MONITOR_TRANSFORM_90:
return XCB_RANDR_ROTATION_ROTATE_90;
case META_MONITOR_TRANSFORM_180:
return XCB_RANDR_ROTATION_ROTATE_180;
case META_MONITOR_TRANSFORM_270:
return XCB_RANDR_ROTATION_ROTATE_270;
case META_MONITOR_TRANSFORM_FLIPPED:
return XCB_RANDR_ROTATION_REFLECT_X | XCB_RANDR_ROTATION_ROTATE_0;
case META_MONITOR_TRANSFORM_FLIPPED_90:
return XCB_RANDR_ROTATION_REFLECT_X | XCB_RANDR_ROTATION_ROTATE_90;
case META_MONITOR_TRANSFORM_FLIPPED_180:
return XCB_RANDR_ROTATION_REFLECT_X | XCB_RANDR_ROTATION_ROTATE_180;
case META_MONITOR_TRANSFORM_FLIPPED_270:
return XCB_RANDR_ROTATION_REFLECT_X | XCB_RANDR_ROTATION_ROTATE_270;
}
g_assert_not_reached ();
}
static gboolean
xrandr_set_crtc_config (MetaMonitorManagerXrandr *manager_xrandr,
MetaCrtc *crtc,
gboolean save_timestamp,
xcb_randr_crtc_t xrandr_crtc,
xcb_timestamp_t timestamp,
int x,
int y,
xcb_randr_mode_t mode,
xcb_randr_rotation_t rotation,
xcb_randr_output_t *outputs,
int n_outputs)
{
xcb_timestamp_t new_timestamp;
if (!meta_crtc_xrandr_set_config (crtc, xrandr_crtc, timestamp,
x, y, mode, rotation,
outputs, n_outputs,
&new_timestamp))
return FALSE;
if (save_timestamp)
manager_xrandr->last_xrandr_set_timestamp = new_timestamp;
return TRUE;
}
static gboolean
is_crtc_assignment_changed (MetaCrtc *crtc,
MetaCrtcInfo **crtc_infos,
unsigned int n_crtc_infos)
{
unsigned int i;
for (i = 0; i < n_crtc_infos; i++)
{
MetaCrtcInfo *crtc_info = crtc_infos[i];
unsigned int j;
if (crtc_info->crtc != crtc)
continue;
if (crtc->current_mode != crtc_info->mode)
return TRUE;
if (crtc->rect.x != crtc_info->x)
return TRUE;
if (crtc->rect.y != crtc_info->y)
return TRUE;
if (crtc->transform != crtc_info->transform)
return TRUE;
for (j = 0; j < crtc_info->outputs->len; j++)
{
MetaOutput *output = ((MetaOutput**) crtc_info->outputs->pdata)[j];
if (output->crtc != crtc)
return TRUE;
}
return FALSE;
}
return crtc->current_mode != NULL;
}
static gboolean
is_output_assignment_changed (MetaOutput *output,
MetaCrtcInfo **crtc_infos,
unsigned int n_crtc_infos,
MetaOutputInfo **output_infos,
unsigned int n_output_infos)
{
gboolean output_is_found = FALSE;
unsigned int i;
for (i = 0; i < n_output_infos; i++)
{
MetaOutputInfo *output_info = output_infos[i];
if (output_info->output != output)
continue;
if (output->is_primary != output_info->is_primary)
return TRUE;
if (output->is_presentation != output_info->is_presentation)
return TRUE;
if (output->is_underscanning != output_info->is_underscanning)
return TRUE;
output_is_found = TRUE;
}
if (!output_is_found)
return output->crtc != NULL;
for (i = 0; i < n_crtc_infos; i++)
{
MetaCrtcInfo *crtc_info = crtc_infos[i];
unsigned int j;
for (j = 0; j < crtc_info->outputs->len; j++)
{
MetaOutput *crtc_info_output =
((MetaOutput**) crtc_info->outputs->pdata)[j];
if (crtc_info_output == output &&
crtc_info->crtc == output->crtc)
return FALSE;
}
}
return TRUE;
}
static gboolean
is_assignments_changed (MetaMonitorManager *manager,
MetaCrtcInfo **crtc_infos,
unsigned int n_crtc_infos,
MetaOutputInfo **output_infos,
unsigned int n_output_infos)
{
MetaMonitorManagerXrandr *manager_xrandr =
META_MONITOR_MANAGER_XRANDR (manager);
GList *l;
for (l = meta_gpu_get_crtcs (manager_xrandr->gpu); l; l = l->next)
{
MetaCrtc *crtc = l->data;
if (is_crtc_assignment_changed (crtc, crtc_infos, n_crtc_infos))
return TRUE;
}
for (l = meta_gpu_get_outputs (manager_xrandr->gpu); l; l = l->next)
{
MetaOutput *output = l->data;
if (is_output_assignment_changed (output,
crtc_infos,
n_crtc_infos,
output_infos,
n_output_infos))
return TRUE;
}
return FALSE;
}
static void
apply_crtc_assignments (MetaMonitorManager *manager,
gboolean save_timestamp,
MetaCrtcInfo **crtcs,
unsigned int n_crtcs,
MetaOutputInfo **outputs,
unsigned int n_outputs)
{
MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
unsigned i;
GList *l;
int width, height, width_mm, height_mm;
XGrabServer (manager_xrandr->xdisplay);
/* First compute the new size of the screen (framebuffer) */
width = 0; height = 0;
for (i = 0; i < n_crtcs; i++)
{
MetaCrtcInfo *crtc_info = crtcs[i];
MetaCrtc *crtc = crtc_info->crtc;
crtc->is_dirty = TRUE;
if (crtc_info->mode == NULL)
continue;
if (meta_monitor_transform_is_rotated (crtc_info->transform))
{
width = MAX (width, crtc_info->x + crtc_info->mode->height);
height = MAX (height, crtc_info->y + crtc_info->mode->width);
}
else
{
width = MAX (width, crtc_info->x + crtc_info->mode->width);
height = MAX (height, crtc_info->y + crtc_info->mode->height);
}
}
/* Second disable all newly disabled CRTCs, or CRTCs that in the previous
configuration would be outside the new framebuffer (otherwise X complains
loudly when resizing)
CRTC will be enabled again after resizing the FB
*/
for (i = 0; i < n_crtcs; i++)
{
MetaCrtcInfo *crtc_info = crtcs[i];
MetaCrtc *crtc = crtc_info->crtc;
if (crtc_info->mode == NULL ||
crtc->rect.x + crtc->rect.width > width ||
crtc->rect.y + crtc->rect.height > height)
{
xrandr_set_crtc_config (manager_xrandr,
crtc,
save_timestamp,
(xcb_randr_crtc_t) crtc->crtc_id,
XCB_CURRENT_TIME,
0, 0, XCB_NONE,
XCB_RANDR_ROTATION_ROTATE_0,
NULL, 0);
crtc->rect.x = 0;
crtc->rect.y = 0;
crtc->rect.width = 0;
crtc->rect.height = 0;
crtc->current_mode = NULL;
}
}
/* Disable CRTCs not mentioned in the list */
for (l = meta_gpu_get_crtcs (manager_xrandr->gpu); l; l = l->next)
{
MetaCrtc *crtc = l->data;
if (crtc->is_dirty)
{
crtc->is_dirty = FALSE;
continue;
}
if (crtc->current_mode == NULL)
continue;
xrandr_set_crtc_config (manager_xrandr,
crtc,
save_timestamp,
(xcb_randr_crtc_t) crtc->crtc_id,
XCB_CURRENT_TIME,
0, 0, XCB_NONE,
XCB_RANDR_ROTATION_ROTATE_0,
NULL, 0);
crtc->rect.x = 0;
crtc->rect.y = 0;
crtc->rect.width = 0;
crtc->rect.height = 0;
crtc->current_mode = NULL;
}
g_assert (width > 0 && height > 0);
/* The 'physical size' of an X screen is meaningless if that screen
* can consist of many monitors. So just pick a size that make the
* dpi 96.
*
* Firefox and Evince apparently believe what X tells them.
*/
width_mm = (width / DPI_FALLBACK) * 25.4 + 0.5;
height_mm = (height / DPI_FALLBACK) * 25.4 + 0.5;
XRRSetScreenSize (manager_xrandr->xdisplay, DefaultRootWindow (manager_xrandr->xdisplay),
width, height, width_mm, height_mm);
for (i = 0; i < n_crtcs; i++)
{
MetaCrtcInfo *crtc_info = crtcs[i];
MetaCrtc *crtc = crtc_info->crtc;
if (crtc_info->mode != NULL)
{
MetaCrtcMode *mode;
g_autofree xcb_randr_output_t *output_ids = NULL;
unsigned int j, n_output_ids;
xcb_randr_rotation_t rotation;
mode = crtc_info->mode;
n_output_ids = crtc_info->outputs->len;
output_ids = g_new (xcb_randr_output_t, n_output_ids);
for (j = 0; j < n_output_ids; j++)
{
MetaOutput *output;
output = ((MetaOutput**)crtc_info->outputs->pdata)[j];
output->is_dirty = TRUE;
output->crtc = crtc;
output_ids[j] = output->winsys_id;
}
rotation = meta_monitor_transform_to_xrandr (crtc_info->transform);
if (!xrandr_set_crtc_config (manager_xrandr,
crtc,
save_timestamp,
(xcb_randr_crtc_t) crtc->crtc_id,
XCB_CURRENT_TIME,
crtc_info->x, crtc_info->y,
(xcb_randr_mode_t) mode->mode_id,
rotation,
output_ids, n_output_ids))
{
meta_warning ("Configuring CRTC %d with mode %d (%d x %d @ %f) at position %d, %d and transform %u failed\n",
(unsigned)(crtc->crtc_id), (unsigned)(mode->mode_id),
mode->width, mode->height, (float)mode->refresh_rate,
crtc_info->x, crtc_info->y, crtc_info->transform);
continue;
}
if (meta_monitor_transform_is_rotated (crtc_info->transform))
{
width = mode->height;
height = mode->width;
}
else
{
width = mode->width;
height = mode->height;
}
crtc->rect.x = crtc_info->x;
crtc->rect.y = crtc_info->y;
crtc->rect.width = width;
crtc->rect.height = height;
crtc->current_mode = mode;
crtc->transform = crtc_info->transform;
}
}
for (i = 0; i < n_outputs; i++)
{
MetaOutputInfo *output_info = outputs[i];
MetaOutput *output = output_info->output;
output->is_primary = output_info->is_primary;
output->is_presentation = output_info->is_presentation;
output->is_underscanning = output_info->is_underscanning;
meta_output_xrandr_apply_mode (output);
}
/* Disable outputs not mentioned in the list */
for (l = meta_gpu_get_outputs (manager_xrandr->gpu); l; l = l->next)
{
MetaOutput *output = l->data;
if (output->is_dirty)
{
output->is_dirty = FALSE;
continue;
}
output->crtc = NULL;
output->is_primary = FALSE;
}
XUngrabServer (manager_xrandr->xdisplay);
XFlush (manager_xrandr->xdisplay);
}
static void
meta_monitor_manager_xrandr_ensure_initial_config (MetaMonitorManager *manager)
{
MetaMonitorConfigManager *config_manager =
meta_monitor_manager_get_config_manager (manager);
MetaMonitorsConfig *config;
meta_monitor_manager_ensure_configured (manager);
/*
* Normally we don't rebuild our data structures until we see the
* RRScreenNotify event, but at least at startup we want to have the right
* configuration immediately.
*/
meta_monitor_manager_read_current_state (manager);
config = meta_monitor_config_manager_get_current (config_manager);
meta_monitor_manager_update_logical_state_derived (manager, config);
}
static void
meta_monitor_manager_xrandr_rebuild_derived (MetaMonitorManager *manager,
MetaMonitorsConfig *config)
{
MetaMonitorManagerXrandr *manager_xrandr =
META_MONITOR_MANAGER_XRANDR (manager);
g_clear_pointer (&manager_xrandr->supported_scales, g_free);
meta_monitor_manager_rebuild_derived (manager, config);
}
static gboolean
meta_monitor_manager_xrandr_apply_monitors_config (MetaMonitorManager *manager,
MetaMonitorsConfig *config,
MetaMonitorsConfigMethod method,
GError **error)
{
GPtrArray *crtc_infos;
GPtrArray *output_infos;
if (!config)
{
meta_monitor_manager_xrandr_rebuild_derived (manager, NULL);
return TRUE;
}
if (!meta_monitor_config_manager_assign (manager, config,
&crtc_infos, &output_infos,
error))
return FALSE;
if (method != META_MONITORS_CONFIG_METHOD_VERIFY)
{
/*
* If the assignment has not changed, we won't get any notification about
* any new configuration from the X server; but we still need to update
* our own configuration, as something not applicable in Xrandr might
* have changed locally, such as the logical monitors scale. This means we
* must check that our new assignment actually changes anything, otherwise
* just update the logical state.
*/
if (is_assignments_changed (manager,
(MetaCrtcInfo **) crtc_infos->pdata,
crtc_infos->len,
(MetaOutputInfo **) output_infos->pdata,
output_infos->len))
{
apply_crtc_assignments (manager,
TRUE,
(MetaCrtcInfo **) crtc_infos->pdata,
crtc_infos->len,
(MetaOutputInfo **) output_infos->pdata,
output_infos->len);
}
else
{
meta_monitor_manager_xrandr_rebuild_derived (manager, config);
}
}
g_ptr_array_free (crtc_infos, TRUE);
g_ptr_array_free (output_infos, TRUE);
return TRUE;
}
static void
meta_monitor_manager_xrandr_change_backlight (MetaMonitorManager *manager,
MetaOutput *output,
gint value)
{
meta_output_xrandr_change_backlight (output, value);
}
static void
meta_monitor_manager_xrandr_get_crtc_gamma (MetaMonitorManager *manager,
MetaCrtc *crtc,
gsize *size,
unsigned short **red,
unsigned short **green,
unsigned short **blue)
{
MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
XRRCrtcGamma *gamma;
gamma = XRRGetCrtcGamma (manager_xrandr->xdisplay, (XID)crtc->crtc_id);
*size = gamma->size;
*red = g_memdup (gamma->red, sizeof (unsigned short) * gamma->size);
*green = g_memdup (gamma->green, sizeof (unsigned short) * gamma->size);
*blue = g_memdup (gamma->blue, sizeof (unsigned short) * gamma->size);
XRRFreeGamma (gamma);
}
static void
meta_monitor_manager_xrandr_set_crtc_gamma (MetaMonitorManager *manager,
MetaCrtc *crtc,
gsize size,
unsigned short *red,
unsigned short *green,
unsigned short *blue)
{
MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
XRRCrtcGamma *gamma;
gamma = XRRAllocGamma (size);
memcpy (gamma->red, red, sizeof (unsigned short) * size);
memcpy (gamma->green, green, sizeof (unsigned short) * size);
memcpy (gamma->blue, blue, sizeof (unsigned short) * size);
XRRSetCrtcGamma (manager_xrandr->xdisplay, (XID)crtc->crtc_id, gamma);
XRRFreeGamma (gamma);
}
#ifdef HAVE_XRANDR15
static MetaMonitorXrandrData *
meta_monitor_xrandr_data_from_monitor (MetaMonitor *monitor)
{
MetaMonitorXrandrData *monitor_xrandr_data;
monitor_xrandr_data = g_object_get_qdata (G_OBJECT (monitor),
quark_meta_monitor_xrandr_data);
if (monitor_xrandr_data)
return monitor_xrandr_data;
monitor_xrandr_data = g_new0 (MetaMonitorXrandrData, 1);
g_object_set_qdata_full (G_OBJECT (monitor),
quark_meta_monitor_xrandr_data,
monitor_xrandr_data,
g_free);
return monitor_xrandr_data;
}
static void
meta_monitor_manager_xrandr_increase_monitor_count (MetaMonitorManagerXrandr *manager_xrandr,
Atom name_atom)
{
int count;
count =
GPOINTER_TO_INT (g_hash_table_lookup (manager_xrandr->tiled_monitor_atoms,
GSIZE_TO_POINTER (name_atom)));
count++;
g_hash_table_insert (manager_xrandr->tiled_monitor_atoms,
GSIZE_TO_POINTER (name_atom),
GINT_TO_POINTER (count));
}
static int
meta_monitor_manager_xrandr_decrease_monitor_count (MetaMonitorManagerXrandr *manager_xrandr,
Atom name_atom)
{
int count;
count =
GPOINTER_TO_SIZE (g_hash_table_lookup (manager_xrandr->tiled_monitor_atoms,
GSIZE_TO_POINTER (name_atom)));
g_assert (count > 0);
count--;
g_hash_table_insert (manager_xrandr->tiled_monitor_atoms,
GSIZE_TO_POINTER (name_atom),
GINT_TO_POINTER (count));
return count;
}
static void
meta_monitor_manager_xrandr_tiled_monitor_added (MetaMonitorManager *manager,
MetaMonitor *monitor)
{
MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
MetaMonitorTiled *monitor_tiled = META_MONITOR_TILED (monitor);
const char *product;
char *name;
uint32_t tile_group_id;
MetaMonitorXrandrData *monitor_xrandr_data;
Atom name_atom;
XRRMonitorInfo *xrandr_monitor_info;
GList *outputs;
GList *l;
int i;
if (manager_xrandr->has_randr15 == FALSE)
return;
product = meta_monitor_get_product (monitor);
tile_group_id = meta_monitor_tiled_get_tile_group_id (monitor_tiled);
if (product)
name = g_strdup_printf ("%s-%d", product, tile_group_id);
else
name = g_strdup_printf ("Tiled-%d", tile_group_id);
name_atom = XInternAtom (manager_xrandr->xdisplay, name, False);
g_free (name);
monitor_xrandr_data = meta_monitor_xrandr_data_from_monitor (monitor);
monitor_xrandr_data->xrandr_name = name_atom;
meta_monitor_manager_xrandr_increase_monitor_count (manager_xrandr,
name_atom);
outputs = meta_monitor_get_outputs (monitor);
xrandr_monitor_info = XRRAllocateMonitor (manager_xrandr->xdisplay,
g_list_length (outputs));
xrandr_monitor_info->name = name_atom;
xrandr_monitor_info->primary = meta_monitor_is_primary (monitor);
xrandr_monitor_info->automatic = True;
for (l = outputs, i = 0; l; l = l->next, i++)
{
MetaOutput *output = l->data;
xrandr_monitor_info->outputs[i] = output->winsys_id;
}
XRRSetMonitor (manager_xrandr->xdisplay,
DefaultRootWindow (manager_xrandr->xdisplay),
xrandr_monitor_info);
XRRFreeMonitors (xrandr_monitor_info);
}
static void
meta_monitor_manager_xrandr_tiled_monitor_removed (MetaMonitorManager *manager,
MetaMonitor *monitor)
{
MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
MetaMonitorXrandrData *monitor_xrandr_data;
Atom monitor_name;
int monitor_count;
if (manager_xrandr->has_randr15 == FALSE)
return;
monitor_xrandr_data = meta_monitor_xrandr_data_from_monitor (monitor);
monitor_name = monitor_xrandr_data->xrandr_name;
monitor_count =
meta_monitor_manager_xrandr_decrease_monitor_count (manager_xrandr,
monitor_name);
if (monitor_count == 0)
XRRDeleteMonitor (manager_xrandr->xdisplay,
DefaultRootWindow (manager_xrandr->xdisplay),
monitor_name);
}
static void
meta_monitor_manager_xrandr_init_monitors (MetaMonitorManagerXrandr *manager_xrandr)
{
XRRMonitorInfo *m;
int n, i;
if (manager_xrandr->has_randr15 == FALSE)
return;
/* delete any tiled monitors setup, as mutter will want to recreate
things in its image */
m = XRRGetMonitors (manager_xrandr->xdisplay,
DefaultRootWindow (manager_xrandr->xdisplay),
FALSE, &n);
if (n == -1)
return;
for (i = 0; i < n; i++)
{
if (m[i].noutput > 1)
XRRDeleteMonitor (manager_xrandr->xdisplay,
DefaultRootWindow (manager_xrandr->xdisplay),
m[i].name);
}
XRRFreeMonitors (m);
}
#endif
static gboolean
meta_monitor_manager_xrandr_is_transform_handled (MetaMonitorManager *manager,
MetaCrtc *crtc,
MetaMonitorTransform transform)
{
g_warn_if_fail ((crtc->all_transforms & transform) == transform);
return TRUE;
}
static float
meta_monitor_manager_xrandr_calculate_monitor_mode_scale (MetaMonitorManager *manager,
MetaMonitor *monitor,
MetaMonitorMode *monitor_mode)
{
return meta_monitor_calculate_mode_scale (monitor, monitor_mode);
}
static void
add_supported_scale (GArray *supported_scales,
float scale)
{
unsigned int i;
for (i = 0; i < supported_scales->len; i++)
{
float supported_scale = g_array_index (supported_scales, float, i);
if (scale == supported_scale)
return;
}
g_array_append_val (supported_scales, scale);
}
static int
compare_scales (gconstpointer a,
gconstpointer b)
{
float f = *(float *) a - *(float *) b;
if (f < 0)
return -1;
if (f > 0)
return 1;
return 0;
}
static void
ensure_supported_monitor_scales (MetaMonitorManager *manager)
{
MetaMonitorManagerXrandr *manager_xrandr =
META_MONITOR_MANAGER_XRANDR (manager);
MetaMonitorScalesConstraint constraints;
GList *l;
GArray *supported_scales;
if (manager_xrandr->supported_scales)
return;
constraints = META_MONITOR_SCALES_CONSTRAINT_NO_FRAC;
supported_scales = g_array_new (FALSE, FALSE, sizeof (float));
for (l = manager->monitors; l; l = l->next)
{
MetaMonitor *monitor = l->data;
MetaMonitorMode *monitor_mode;
float *monitor_scales;
int n_monitor_scales;
int i;
monitor_mode = meta_monitor_get_preferred_mode (monitor);
monitor_scales =
meta_monitor_calculate_supported_scales (monitor,
monitor_mode,
constraints,
&n_monitor_scales);
for (i = 0; i < n_monitor_scales; i++)
add_supported_scale (supported_scales, monitor_scales[i]);
g_array_sort (supported_scales, compare_scales);
g_free (monitor_scales);
}
manager_xrandr->supported_scales = (float *) supported_scales->data;
manager_xrandr->n_supported_scales = supported_scales->len;
g_array_free (supported_scales, FALSE);
}
static float *
meta_monitor_manager_xrandr_calculate_supported_scales (MetaMonitorManager *manager,
MetaLogicalMonitorLayoutMode layout_mode,
MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
int *n_supported_scales)
{
MetaMonitorManagerXrandr *manager_xrandr =
META_MONITOR_MANAGER_XRANDR (manager);
ensure_supported_monitor_scales (manager);
*n_supported_scales = manager_xrandr->n_supported_scales;
return g_memdup (manager_xrandr->supported_scales,
manager_xrandr->n_supported_scales * sizeof (float));
}
static MetaMonitorManagerCapability
meta_monitor_manager_xrandr_get_capabilities (MetaMonitorManager *manager)
{
return (META_MONITOR_MANAGER_CAPABILITY_MIRRORING |
META_MONITOR_MANAGER_CAPABILITY_GLOBAL_SCALE_REQUIRED);
}
static gboolean
meta_monitor_manager_xrandr_get_max_screen_size (MetaMonitorManager *manager,
int *max_width,
int *max_height)
{
MetaMonitorManagerXrandr *manager_xrandr =
META_MONITOR_MANAGER_XRANDR (manager);
meta_gpu_xrandr_get_max_screen_size (META_GPU_XRANDR (manager_xrandr->gpu),
max_width, max_height);
return TRUE;
}
static MetaLogicalMonitorLayoutMode
meta_monitor_manager_xrandr_get_default_layout_mode (MetaMonitorManager *manager)
{
return META_LOGICAL_MONITOR_LAYOUT_MODE_PHYSICAL;
}
static void
meta_monitor_manager_xrandr_constructed (GObject *object)
{
MetaMonitorManagerXrandr *manager_xrandr =
META_MONITOR_MANAGER_XRANDR (object);
MetaMonitorManager *manager = META_MONITOR_MANAGER (manager_xrandr);
MetaBackendX11 *backend =
META_BACKEND_X11 (meta_monitor_manager_get_backend (manager));
manager_xrandr->xdisplay = meta_backend_x11_get_xdisplay (backend);
manager_xrandr->gpu = META_GPU (meta_gpu_xrandr_new (manager_xrandr));
meta_monitor_manager_add_gpu (manager, manager_xrandr->gpu);
if (!XRRQueryExtension (manager_xrandr->xdisplay,
&manager_xrandr->rr_event_base,
&manager_xrandr->rr_error_base))
{
return;
}
else
{
int major_version, minor_version;
/* We only use ScreenChangeNotify, but GDK uses the others,
and we don't want to step on its toes */
XRRSelectInput (manager_xrandr->xdisplay,
DefaultRootWindow (manager_xrandr->xdisplay),
RRScreenChangeNotifyMask
| RRCrtcChangeNotifyMask
| RROutputPropertyNotifyMask);
manager_xrandr->has_randr15 = FALSE;
XRRQueryVersion (manager_xrandr->xdisplay, &major_version,
&minor_version);
#ifdef HAVE_XRANDR15
if (major_version > 1 ||
(major_version == 1 &&
minor_version >= 5))
{
manager_xrandr->has_randr15 = TRUE;
manager_xrandr->tiled_monitor_atoms = g_hash_table_new (NULL, NULL);
}
meta_monitor_manager_xrandr_init_monitors (manager_xrandr);
#endif
}
G_OBJECT_CLASS (meta_monitor_manager_xrandr_parent_class)->constructed (object);
}
static void
meta_monitor_manager_xrandr_finalize (GObject *object)
{
MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (object);
g_clear_object (&manager_xrandr->gpu);
g_hash_table_destroy (manager_xrandr->tiled_monitor_atoms);
g_free (manager_xrandr->supported_scales);
G_OBJECT_CLASS (meta_monitor_manager_xrandr_parent_class)->finalize (object);
}
static void
meta_monitor_manager_xrandr_init (MetaMonitorManagerXrandr *manager_xrandr)
{
}
static void
meta_monitor_manager_xrandr_class_init (MetaMonitorManagerXrandrClass *klass)
{
MetaMonitorManagerClass *manager_class = META_MONITOR_MANAGER_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_monitor_manager_xrandr_finalize;
object_class->constructed = meta_monitor_manager_xrandr_constructed;
manager_class->read_edid = meta_monitor_manager_xrandr_read_edid;
manager_class->ensure_initial_config = meta_monitor_manager_xrandr_ensure_initial_config;
manager_class->apply_monitors_config = meta_monitor_manager_xrandr_apply_monitors_config;
manager_class->set_power_save_mode = meta_monitor_manager_xrandr_set_power_save_mode;
manager_class->change_backlight = meta_monitor_manager_xrandr_change_backlight;
manager_class->get_crtc_gamma = meta_monitor_manager_xrandr_get_crtc_gamma;
manager_class->set_crtc_gamma = meta_monitor_manager_xrandr_set_crtc_gamma;
#ifdef HAVE_XRANDR15
manager_class->tiled_monitor_added = meta_monitor_manager_xrandr_tiled_monitor_added;
manager_class->tiled_monitor_removed = meta_monitor_manager_xrandr_tiled_monitor_removed;
#endif
manager_class->is_transform_handled = meta_monitor_manager_xrandr_is_transform_handled;
manager_class->calculate_monitor_mode_scale = meta_monitor_manager_xrandr_calculate_monitor_mode_scale;
manager_class->calculate_supported_scales = meta_monitor_manager_xrandr_calculate_supported_scales;
manager_class->get_capabilities = meta_monitor_manager_xrandr_get_capabilities;
manager_class->get_max_screen_size = meta_monitor_manager_xrandr_get_max_screen_size;
manager_class->get_default_layout_mode = meta_monitor_manager_xrandr_get_default_layout_mode;
quark_meta_monitor_xrandr_data =
g_quark_from_static_string ("-meta-monitor-xrandr-data");
}
gboolean
meta_monitor_manager_xrandr_handle_xevent (MetaMonitorManagerXrandr *manager_xrandr,
XEvent *event)
{
MetaMonitorManager *manager = META_MONITOR_MANAGER (manager_xrandr);
MetaGpuXrandr *gpu_xrandr;
XRRScreenResources *resources;
gboolean is_hotplug;
gboolean is_our_configuration;
if ((event->type - manager_xrandr->rr_event_base) != RRScreenChangeNotify)
return FALSE;
XRRUpdateConfiguration (event);
meta_monitor_manager_read_current_state (manager);
gpu_xrandr = META_GPU_XRANDR (manager_xrandr->gpu);
resources = meta_gpu_xrandr_get_resources (gpu_xrandr);
is_hotplug = resources->timestamp < resources->configTimestamp;
is_our_configuration = (resources->timestamp ==
manager_xrandr->last_xrandr_set_timestamp);
if (is_hotplug)
{
meta_monitor_manager_on_hotplug (manager);
}
else
{
MetaMonitorsConfig *config;
if (is_our_configuration)
{
MetaMonitorConfigManager *config_manager =
meta_monitor_manager_get_config_manager (manager);
config = meta_monitor_config_manager_get_current (config_manager);
}
else
{
config = NULL;
}
meta_monitor_manager_xrandr_rebuild_derived (manager, config);
}
return TRUE;
}
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