/
gnome-rr-config.c
1962 lines (1610 loc) · 49.1 KB
/
gnome-rr-config.c
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/* gnome-rr-config.c
* -*- c-basic-offset: 4 -*-
*
* Copyright 2007, 2008, Red Hat, Inc.
* Copyright 2010 Giovanni Campagna
*
* This file is part of the Gnome Library.
*
* The Gnome 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.
*
* The Gnome 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 the Gnome Library; see the file COPYING.LIB. If not,
* write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Author: Soren Sandmann <sandmann@redhat.com>
*/
#define GNOME_DESKTOP_USE_UNSTABLE_API
#include <config.h>
#include <glib/gi18n-lib.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <glib/gstdio.h>
#include <X11/Xlib.h>
#include <gdk/gdkx.h>
#include "gnome-rr-config.h"
#include "edid.h"
#include "gnome-rr-private.h"
#define CONFIG_INTENDED_BASENAME "monitors.xml"
#define CONFIG_BACKUP_BASENAME "monitors.xml.backup"
/* 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
/* In version 0 of the config file format, we had several <configuration>
* toplevel elements and no explicit version number. So, the filed looked
* like
*
* <configuration>
* ...
* </configuration>
* <configuration>
* ...
* </configuration>
*
* Since version 1 of the config file, the file has a toplevel <monitors>
* element to group all the configurations. That element has a "version"
* attribute which is an integer. So, the file looks like this:
*
* <monitors version="1">
* <configuration>
* ...
* </configuration>
* <configuration>
* ...
* </configuration>
* </monitors>
*/
/* A helper wrapper around the GMarkup parser stuff */
static gboolean parse_file_gmarkup (const gchar *file,
const GMarkupParser *parser,
gpointer data,
GError **err);
typedef struct CrtcAssignment CrtcAssignment;
static gboolean crtc_assignment_apply (CrtcAssignment *assign,
guint32 timestamp,
GError **error);
static CrtcAssignment *crtc_assignment_new (GnomeRRScreen *screen,
GnomeRROutputInfo **outputs,
GError **error);
static void crtc_assignment_free (CrtcAssignment *assign);
enum {
PROP_0,
PROP_SCREEN,
PROP_LAST
};
G_DEFINE_TYPE (GnomeRRConfig, gnome_rr_config, G_TYPE_OBJECT)
typedef struct Parser Parser;
/* Parser for monitor configurations */
struct Parser
{
int config_file_version;
GnomeRROutputInfo * output;
GnomeRRConfig * configuration;
GPtrArray * outputs;
GPtrArray * configurations;
GQueue * stack;
};
static int
parse_int (const char *text)
{
return strtol (text, NULL, 0);
}
static guint
parse_uint (const char *text)
{
return strtoul (text, NULL, 0);
}
static gboolean
stack_is (Parser *parser,
const char *s1,
...)
{
GList *stack = NULL;
const char *s;
GList *l1, *l2;
va_list args;
stack = g_list_prepend (stack, (gpointer)s1);
va_start (args, s1);
s = va_arg (args, const char *);
while (s)
{
stack = g_list_prepend (stack, (gpointer)s);
s = va_arg (args, const char *);
}
va_end (args);
l1 = stack;
l2 = parser->stack->head;
while (l1 && l2)
{
if (strcmp (l1->data, l2->data) != 0)
{
g_list_free (stack);
return FALSE;
}
l1 = l1->next;
l2 = l2->next;
}
g_list_free (stack);
return (!l1 && !l2);
}
static void
handle_start_element (GMarkupParseContext *context,
const gchar *name,
const gchar **attr_names,
const gchar **attr_values,
gpointer user_data,
GError **err)
{
Parser *parser = user_data;
if (strcmp (name, "output") == 0)
{
int i;
g_assert (parser->output == NULL);
parser->output = g_object_new (GNOME_TYPE_RR_OUTPUT_INFO, NULL);
parser->output->priv->rotation = 0;
for (i = 0; attr_names[i] != NULL; ++i)
{
if (strcmp (attr_names[i], "name") == 0)
{
parser->output->priv->name = g_strdup (attr_values[i]);
break;
}
}
if (!parser->output->priv->name)
{
/* This really shouldn't happen, but it's better to make
* something up than to crash later.
*/
g_warning ("Malformed monitor configuration file");
parser->output->priv->name = g_strdup ("default");
}
parser->output->priv->connected = FALSE;
parser->output->priv->on = FALSE;
parser->output->priv->primary = FALSE;
}
else if (strcmp (name, "configuration") == 0)
{
g_assert (parser->configuration == NULL);
parser->configuration = g_object_new (GNOME_TYPE_RR_CONFIG, NULL);
parser->configuration->priv->clone = FALSE;
parser->configuration->priv->outputs = NULL;
}
else if (strcmp (name, "monitors") == 0)
{
int i;
for (i = 0; attr_names[i] != NULL; i++)
{
if (strcmp (attr_names[i], "version") == 0)
{
parser->config_file_version = parse_int (attr_values[i]);
break;
}
}
}
g_queue_push_tail (parser->stack, g_strdup (name));
}
static void
handle_end_element (GMarkupParseContext *context,
const gchar *name,
gpointer user_data,
GError **err)
{
Parser *parser = user_data;
if (strcmp (name, "output") == 0)
{
/* If no rotation properties were set, just use GNOME_RR_ROTATION_0 */
if (parser->output->priv->rotation == 0)
parser->output->priv->rotation = GNOME_RR_ROTATION_0;
g_ptr_array_add (parser->outputs, parser->output);
parser->output = NULL;
}
else if (strcmp (name, "configuration") == 0)
{
g_ptr_array_add (parser->outputs, NULL);
parser->configuration->priv->outputs =
(GnomeRROutputInfo **)g_ptr_array_free (parser->outputs, FALSE);
parser->outputs = g_ptr_array_new ();
g_ptr_array_add (parser->configurations, parser->configuration);
parser->configuration = NULL;
}
g_free (g_queue_pop_tail (parser->stack));
}
#define TOPLEVEL_ELEMENT (parser->config_file_version > 0 ? "monitors" : NULL)
static void
handle_text (GMarkupParseContext *context,
const gchar *text,
gsize text_len,
gpointer user_data,
GError **err)
{
Parser *parser = user_data;
if (stack_is (parser, "vendor", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
parser->output->priv->connected = TRUE;
strncpy ((gchar*) parser->output->priv->vendor, text, 3);
parser->output->priv->vendor[3] = 0;
}
else if (stack_is (parser, "clone", "configuration", TOPLEVEL_ELEMENT, NULL))
{
if (strcmp (text, "yes") == 0)
parser->configuration->priv->clone = TRUE;
}
else if (stack_is (parser, "product", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
parser->output->priv->connected = TRUE;
parser->output->priv->product = parse_int (text);
}
else if (stack_is (parser, "serial", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
parser->output->priv->connected = TRUE;
parser->output->priv->serial = parse_uint (text);
}
else if (stack_is (parser, "width", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
parser->output->priv->on = TRUE;
parser->output->priv->width = parse_int (text);
}
else if (stack_is (parser, "x", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
parser->output->priv->on = TRUE;
parser->output->priv->x = parse_int (text);
}
else if (stack_is (parser, "y", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
parser->output->priv->on = TRUE;
parser->output->priv->y = parse_int (text);
}
else if (stack_is (parser, "height", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
parser->output->priv->on = TRUE;
parser->output->priv->height = parse_int (text);
}
else if (stack_is (parser, "rate", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
parser->output->priv->on = TRUE;
parser->output->priv->rate = parse_int (text);
}
else if (stack_is (parser, "rotation", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
if (strcmp (text, "normal") == 0)
{
parser->output->priv->rotation |= GNOME_RR_ROTATION_0;
}
else if (strcmp (text, "left") == 0)
{
parser->output->priv->rotation |= GNOME_RR_ROTATION_90;
}
else if (strcmp (text, "upside_down") == 0)
{
parser->output->priv->rotation |= GNOME_RR_ROTATION_180;
}
else if (strcmp (text, "right") == 0)
{
parser->output->priv->rotation |= GNOME_RR_ROTATION_270;
}
}
else if (stack_is (parser, "reflect_x", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
if (strcmp (text, "yes") == 0)
{
parser->output->priv->rotation |= GNOME_RR_REFLECT_X;
}
}
else if (stack_is (parser, "reflect_y", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
if (strcmp (text, "yes") == 0)
{
parser->output->priv->rotation |= GNOME_RR_REFLECT_Y;
}
}
else if (stack_is (parser, "primary", "output", "configuration", TOPLEVEL_ELEMENT, NULL))
{
if (strcmp (text, "yes") == 0)
{
parser->output->priv->primary = TRUE;
}
}
else
{
/* Ignore other properties so we can expand the format in the future */
}
}
static void
parser_free (Parser *parser)
{
int i;
GList *list;
g_assert (parser != NULL);
if (parser->output)
g_object_unref (parser->output);
if (parser->configuration)
g_object_unref (parser->configuration);
for (i = 0; i < parser->outputs->len; ++i)
{
GnomeRROutputInfo *output = parser->outputs->pdata[i];
g_object_unref (output);
}
g_ptr_array_free (parser->outputs, TRUE);
for (i = 0; i < parser->configurations->len; ++i)
{
GnomeRRConfig *config = parser->configurations->pdata[i];
g_object_unref (config);
}
g_ptr_array_free (parser->configurations, TRUE);
for (list = parser->stack->head; list; list = list->next)
g_free (list->data);
g_queue_free (parser->stack);
g_free (parser);
}
static GnomeRRConfig **
configurations_read_from_file (const gchar *filename, GError **error)
{
Parser *parser = g_new0 (Parser, 1);
GnomeRRConfig **result;
GMarkupParser callbacks = {
handle_start_element,
handle_end_element,
handle_text,
NULL, /* passthrough */
NULL, /* error */
};
parser->config_file_version = 0;
parser->configurations = g_ptr_array_new ();
parser->outputs = g_ptr_array_new ();
parser->stack = g_queue_new ();
if (!parse_file_gmarkup (filename, &callbacks, parser, error))
{
result = NULL;
g_assert (parser->outputs);
goto out;
}
g_assert (parser->outputs);
g_ptr_array_add (parser->configurations, NULL);
result = (GnomeRRConfig **)g_ptr_array_free (parser->configurations, FALSE);
parser->configurations = g_ptr_array_new ();
g_assert (parser->outputs);
out:
parser_free (parser);
return result;
}
static void
gnome_rr_config_init (GnomeRRConfig *self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GNOME_TYPE_RR_CONFIG, GnomeRRConfigPrivate);
self->priv->clone = FALSE;
self->priv->screen = NULL;
self->priv->outputs = NULL;
}
static void
gnome_rr_config_set_property (GObject *gobject, guint property_id, const GValue *value, GParamSpec *property)
{
GnomeRRConfig *self = GNOME_RR_CONFIG (gobject);
switch (property_id) {
case PROP_SCREEN:
self->priv->screen = g_value_dup_object (value);
return;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, property);
}
}
static void
gnome_rr_config_finalize (GObject *gobject)
{
GnomeRRConfig *self = GNOME_RR_CONFIG (gobject);
if (self->priv->screen)
g_object_unref (self->priv->screen);
if (self->priv->outputs) {
int i;
for (i = 0; self->priv->outputs[i] != NULL; i++) {
GnomeRROutputInfo *output = self->priv->outputs[i];
g_object_unref (output);
}
g_free (self->priv->outputs);
}
G_OBJECT_CLASS (gnome_rr_config_parent_class)->finalize (gobject);
}
gboolean
gnome_rr_config_load_current (GnomeRRConfig *config, GError **error)
{
GPtrArray *a;
GnomeRROutput **rr_outputs;
int i;
int clone_width = -1;
int clone_height = -1;
int last_x;
g_return_val_if_fail (GNOME_IS_RR_CONFIG (config), FALSE);
a = g_ptr_array_new ();
rr_outputs = gnome_rr_screen_list_outputs (config->priv->screen);
config->priv->clone = FALSE;
for (i = 0; rr_outputs[i] != NULL; ++i)
{
GnomeRROutput *rr_output = rr_outputs[i];
GnomeRROutputInfo *output = g_object_new (GNOME_TYPE_RR_OUTPUT_INFO, NULL);
GnomeRRMode *mode = NULL;
const guint8 *edid_data = gnome_rr_output_get_edid_data (rr_output, NULL);
GnomeRRCrtc *crtc;
output->priv->name = g_strdup (gnome_rr_output_get_name (rr_output));
output->priv->connected = gnome_rr_output_is_connected (rr_output);
if (!output->priv->connected)
{
output->priv->x = -1;
output->priv->y = -1;
output->priv->width = -1;
output->priv->height = -1;
output->priv->rate = -1;
output->priv->rotation = GNOME_RR_ROTATION_0;
}
else
{
MonitorInfo *info = NULL;
if (edid_data)
info = decode_edid (edid_data);
if (info)
{
memcpy (output->priv->vendor, info->manufacturer_code,
sizeof (output->priv->vendor));
output->priv->product = info->product_code;
output->priv->serial = info->serial_number;
output->priv->aspect = info->aspect_ratio;
}
else
{
strcpy (output->priv->vendor, "???");
output->priv->product = 0;
output->priv->serial = 0;
}
if (gnome_rr_output_is_laptop (rr_output))
output->priv->display_name = g_strdup (_("Laptop"));
else
output->priv->display_name = make_display_name (info);
g_free (info);
crtc = gnome_rr_output_get_crtc (rr_output);
mode = crtc? gnome_rr_crtc_get_current_mode (crtc) : NULL;
if (crtc && mode)
{
output->priv->on = TRUE;
gnome_rr_crtc_get_position (crtc, &output->priv->x, &output->priv->y);
output->priv->width = gnome_rr_mode_get_width (mode);
output->priv->height = gnome_rr_mode_get_height (mode);
output->priv->rate = gnome_rr_mode_get_freq (mode);
output->priv->rotation = gnome_rr_crtc_get_current_rotation (crtc);
if (output->priv->x == 0 && output->priv->y == 0) {
if (clone_width == -1) {
clone_width = output->priv->width;
clone_height = output->priv->height;
} else if (clone_width == output->priv->width &&
clone_height == output->priv->height) {
config->priv->clone = TRUE;
}
}
}
else
{
output->priv->on = FALSE;
config->priv->clone = FALSE;
}
/* Get preferred size for the monitor */
mode = gnome_rr_output_get_preferred_mode (rr_output);
if (!mode)
{
GnomeRRMode **modes = gnome_rr_output_list_modes (rr_output);
/* FIXME: we should pick the "best" mode here, where best is
* sorted wrt
*
* - closest aspect ratio
* - mode area
* - refresh rate
* - We may want to extend randrwrap so that get_preferred
* returns that - although that could also depend on
* the crtc.
*/
if (modes[0])
mode = modes[0];
}
if (mode)
{
output->priv->pref_width = gnome_rr_mode_get_width (mode);
output->priv->pref_height = gnome_rr_mode_get_height (mode);
}
else
{
/* Pick some random numbers. This should basically never happen */
output->priv->pref_width = 1024;
output->priv->pref_height = 768;
}
}
output->priv->primary = gnome_rr_output_get_is_primary (rr_output);
g_ptr_array_add (a, output);
}
g_ptr_array_add (a, NULL);
config->priv->outputs = (GnomeRROutputInfo **)g_ptr_array_free (a, FALSE);
/* Walk the outputs computing the right-most edge of all
* lit-up displays
*/
last_x = 0;
for (i = 0; config->priv->outputs[i] != NULL; ++i)
{
GnomeRROutputInfo *output = config->priv->outputs[i];
if (output->priv->on)
{
last_x = MAX (last_x, output->priv->x + output->priv->width);
}
}
/* Now position all off displays to the right of the
* on displays
*/
for (i = 0; config->priv->outputs[i] != NULL; ++i)
{
GnomeRROutputInfo *output = config->priv->outputs[i];
if (output->priv->connected && !output->priv->on)
{
output->priv->x = last_x;
last_x = output->priv->x + output->priv->width;
}
}
g_assert (gnome_rr_config_match (config, config));
return TRUE;
}
gboolean
gnome_rr_config_load_filename (GnomeRRConfig *result, const char *filename, GError **error)
{
GnomeRRConfig *current;
GnomeRRConfig **configs;
gboolean found = FALSE;
g_return_val_if_fail (GNOME_IS_RR_CONFIG (result), FALSE);
g_return_val_if_fail (filename != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
current = gnome_rr_config_new_current (result->priv->screen, error);
configs = configurations_read_from_file (filename, error);
if (configs)
{
int i;
for (i = 0; configs[i] != NULL; ++i)
{
if (gnome_rr_config_match (configs[i], current))
{
int j;
GPtrArray *array;
result->priv->clone = configs[i]->priv->clone;
array = g_ptr_array_new ();
for (j = 0; configs[i]->priv->outputs[j] != NULL; j++) {
g_object_ref (configs[i]->priv->outputs[j]);
g_ptr_array_add (array, configs[i]->priv->outputs[j]);
}
g_ptr_array_add (array, NULL);
result->priv->outputs = (GnomeRROutputInfo **) g_ptr_array_free (array, FALSE);
found = TRUE;
break;
}
g_object_unref (configs[i]);
}
g_free (configs);
if (!found)
g_set_error (error, GNOME_RR_ERROR, GNOME_RR_ERROR_NO_MATCHING_CONFIG,
_("none of the saved display configurations matched the active configuration"));
}
g_object_unref (current);
return found;
}
static void
gnome_rr_config_class_init (GnomeRRConfigClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GnomeRROutputInfoPrivate));
gobject_class->set_property = gnome_rr_config_set_property;
gobject_class->finalize = gnome_rr_config_finalize;
g_object_class_install_property (gobject_class, PROP_SCREEN,
g_param_spec_object ("screen", "Screen", "The GnomeRRScreen this config applies to", GNOME_TYPE_RR_SCREEN,
G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
}
GnomeRRConfig *
gnome_rr_config_new_current (GnomeRRScreen *screen, GError **error)
{
GnomeRRConfig *self = g_object_new (GNOME_TYPE_RR_CONFIG, "screen", screen, NULL);
if (gnome_rr_config_load_current (self, error))
return self;
else
{
g_object_unref (self);
return NULL;
}
}
GnomeRRConfig *
gnome_rr_config_new_stored (GnomeRRScreen *screen, GError **error)
{
GnomeRRConfig *self = g_object_new (GNOME_TYPE_RR_CONFIG, "screen", screen, NULL);
char *filename;
gboolean success;
filename = gnome_rr_config_get_intended_filename ();
success = gnome_rr_config_load_filename (self, filename, error);
g_free (filename);
if (success)
return self;
else
{
g_object_unref (self);
return NULL;
}
}
static gboolean
parse_file_gmarkup (const gchar *filename,
const GMarkupParser *parser,
gpointer data,
GError **err)
{
GMarkupParseContext *context = NULL;
gchar *contents = NULL;
gboolean result = TRUE;
gsize len;
if (!g_file_get_contents (filename, &contents, &len, err))
{
result = FALSE;
goto out;
}
context = g_markup_parse_context_new (parser, 0, data, NULL);
if (!g_markup_parse_context_parse (context, contents, len, err))
{
result = FALSE;
goto out;
}
if (!g_markup_parse_context_end_parse (context, err))
{
result = FALSE;
goto out;
}
out:
if (contents)
g_free (contents);
if (context)
g_markup_parse_context_free (context);
return result;
}
static gboolean
output_match (GnomeRROutputInfo *output1, GnomeRROutputInfo *output2)
{
g_assert (GNOME_IS_RR_OUTPUT_INFO (output1));
g_assert (GNOME_IS_RR_OUTPUT_INFO (output2));
if (strcmp (output1->priv->name, output2->priv->name) != 0)
return FALSE;
if (strcmp (output1->priv->vendor, output2->priv->vendor) != 0)
return FALSE;
if (output1->priv->product != output2->priv->product)
return FALSE;
if (output1->priv->serial != output2->priv->serial)
return FALSE;
if (output1->priv->connected != output2->priv->connected)
return FALSE;
return TRUE;
}
static gboolean
output_equal (GnomeRROutputInfo *output1, GnomeRROutputInfo *output2)
{
g_assert (GNOME_IS_RR_OUTPUT_INFO (output1));
g_assert (GNOME_IS_RR_OUTPUT_INFO (output2));
if (!output_match (output1, output2))
return FALSE;
if (output1->priv->on != output2->priv->on)
return FALSE;
if (output1->priv->on)
{
if (output1->priv->width != output2->priv->width)
return FALSE;
if (output1->priv->height != output2->priv->height)
return FALSE;
if (output1->priv->rate != output2->priv->rate)
return FALSE;
if (output1->priv->x != output2->priv->x)
return FALSE;
if (output1->priv->y != output2->priv->y)
return FALSE;
if (output1->priv->rotation != output2->priv->rotation)
return FALSE;
}
return TRUE;
}
static GnomeRROutputInfo *
find_output (GnomeRRConfig *config, const char *name)
{
int i;
for (i = 0; config->priv->outputs[i] != NULL; ++i)
{
GnomeRROutputInfo *output = config->priv->outputs[i];
if (strcmp (name, output->priv->name) == 0)
return output;
}
return NULL;
}
/* Match means "these configurations apply to the same hardware
* setups"
*/
gboolean
gnome_rr_config_match (GnomeRRConfig *c1, GnomeRRConfig *c2)
{
int i;
g_return_val_if_fail (GNOME_IS_RR_CONFIG (c1), FALSE);
g_return_val_if_fail (GNOME_IS_RR_CONFIG (c2), FALSE);
for (i = 0; c1->priv->outputs[i] != NULL; ++i)
{
GnomeRROutputInfo *output1 = c1->priv->outputs[i];
GnomeRROutputInfo *output2;
output2 = find_output (c2, output1->priv->name);
if (!output2 || !output_match (output1, output2))
return FALSE;
}
return TRUE;
}
/* Equal means "the configurations will result in the same
* modes being set on the outputs"
*/
gboolean
gnome_rr_config_equal (GnomeRRConfig *c1,
GnomeRRConfig *c2)
{
int i;
g_return_val_if_fail (GNOME_IS_RR_CONFIG (c1), FALSE);
g_return_val_if_fail (GNOME_IS_RR_CONFIG (c2), FALSE);
for (i = 0; c1->priv->outputs[i] != NULL; ++i)
{
GnomeRROutputInfo *output1 = c1->priv->outputs[i];
GnomeRROutputInfo *output2;
output2 = find_output (c2, output1->priv->name);
if (!output2 || !output_equal (output1, output2))
return FALSE;
}
return TRUE;
}
static GnomeRROutputInfo **
make_outputs (GnomeRRConfig *config)
{
GPtrArray *outputs;
GnomeRROutputInfo *first_on;
int i;
outputs = g_ptr_array_new ();
first_on = NULL;
for (i = 0; config->priv->outputs[i] != NULL; ++i)
{
GnomeRROutputInfo *old = config->priv->outputs[i];
GnomeRROutputInfo *new = g_object_new (GNOME_TYPE_RR_OUTPUT_INFO, NULL);
*(new->priv) = *(old->priv);
if (old->priv->name)
new->priv->name = g_strdup (old->priv->name);
if (old->priv->display_name)
new->priv->display_name = g_strdup (old->priv->display_name);
if (old->priv->on && !first_on)
first_on = old;
if (config->priv->clone && new->priv->on)
{
g_assert (first_on);
new->priv->width = first_on->priv->width;
new->priv->height = first_on->priv->height;
new->priv->rotation = first_on->priv->rotation;
new->priv->x = 0;
new->priv->y = 0;
}
g_ptr_array_add (outputs, new);
}
g_ptr_array_add (outputs, NULL);
return (GnomeRROutputInfo **)g_ptr_array_free (outputs, FALSE);
}
gboolean
gnome_rr_config_applicable (GnomeRRConfig *configuration,
GnomeRRScreen *screen,
GError **error)
{
GnomeRROutputInfo **outputs;
CrtcAssignment *assign;
gboolean result;
int i;
g_return_val_if_fail (GNOME_IS_RR_CONFIG (configuration), FALSE);
g_return_val_if_fail (GNOME_IS_RR_SCREEN (screen), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
outputs = make_outputs (configuration);
assign = crtc_assignment_new (screen, outputs, error);
if (assign)
{
result = TRUE;
crtc_assignment_free (assign);