1
0
Fork 0
mutter-performance-source/clutter/x11/xsettings/xsettings-common.c
Emmanuele Bassi 98c3c84c00 x11: Add the XSETTINGS machinery
Use the XSETTINGS machinery to get notification from foreign
environments about settings that might interest Clutter itself - namely:
the default font name, the font DPI, and the Xft font options that can
be mapped on cairo_font_options_t.
2010-06-21 15:55:36 +01:00

265 lines
5.7 KiB
C

/*
* Copyright © 2001 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Red Hat not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Red Hat makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* RED HAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL RED HAT
* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Owen Taylor, Red Hat, Inc.
*/
#include "config.h"
#include "string.h"
#include "stdlib.h"
#include <X11/Xlib.h>
#include <X11/Xmd.h> /* For CARD32 */
#include "xsettings-common.h"
XSettingsSetting *
xsettings_setting_copy (XSettingsSetting *setting)
{
XSettingsSetting *result;
size_t str_len;
result = malloc (sizeof *result);
if (!result)
return NULL;
str_len = strlen (setting->name);
result->name = malloc (str_len + 1);
if (!result->name)
goto err;
memcpy (result->name, setting->name, str_len + 1);
result->type = setting->type;
switch (setting->type)
{
case XSETTINGS_TYPE_INT:
result->data.v_int = setting->data.v_int;
break;
case XSETTINGS_TYPE_COLOR:
result->data.v_color = setting->data.v_color;
break;
case XSETTINGS_TYPE_STRING:
str_len = strlen (setting->data.v_string);
result->data.v_string = malloc (str_len + 1);
if (!result->data.v_string)
goto err;
memcpy (result->data.v_string, setting->data.v_string, str_len + 1);
break;
}
result->last_change_serial = setting->last_change_serial;
return result;
err:
if (result->name)
free (result->name);
free (result);
return NULL;
}
XSettingsList *
xsettings_list_copy (XSettingsList *list)
{
XSettingsList *new = NULL;
XSettingsList *old_iter = list;
XSettingsList *new_iter = NULL;
while (old_iter)
{
XSettingsList *new_node;
new_node = malloc (sizeof *new_node);
if (!new_node)
goto error;
new_node->setting = xsettings_setting_copy (old_iter->setting);
if (!new_node->setting)
{
free (new_node);
goto error;
}
if (new_iter)
new_iter->next = new_node;
else
new = new_node;
new_iter = new_node;
old_iter = old_iter->next;
}
return new;
error:
xsettings_list_free (new);
return NULL;
}
int
xsettings_setting_equal (XSettingsSetting *setting_a,
XSettingsSetting *setting_b)
{
if (setting_a->type != setting_b->type)
return 0;
if (strcmp (setting_a->name, setting_b->name) != 0)
return 0;
switch (setting_a->type)
{
case XSETTINGS_TYPE_INT:
return setting_a->data.v_int == setting_b->data.v_int;
case XSETTINGS_TYPE_COLOR:
return (setting_a->data.v_color.red == setting_b->data.v_color.red &&
setting_a->data.v_color.green == setting_b->data.v_color.green &&
setting_a->data.v_color.blue == setting_b->data.v_color.blue &&
setting_a->data.v_color.alpha == setting_b->data.v_color.alpha);
case XSETTINGS_TYPE_STRING:
return strcmp (setting_a->data.v_string, setting_b->data.v_string) == 0;
}
return 0;
}
void
xsettings_setting_free (XSettingsSetting *setting)
{
if (setting->type == XSETTINGS_TYPE_STRING)
free (setting->data.v_string);
if (setting->name)
free (setting->name);
free (setting);
}
void
xsettings_list_free (XSettingsList *list)
{
while (list)
{
XSettingsList *next = list->next;
xsettings_setting_free (list->setting);
free (list);
list = next;
}
}
XSettingsResult
xsettings_list_insert (XSettingsList **list,
XSettingsSetting *setting)
{
XSettingsList *node;
XSettingsList *iter;
XSettingsList *last = NULL;
node = malloc (sizeof *node);
if (!node)
return XSETTINGS_NO_MEM;
node->setting = setting;
iter = *list;
while (iter)
{
int cmp = strcmp (setting->name, iter->setting->name);
if (cmp < 0)
break;
else if (cmp == 0)
{
free (node);
return XSETTINGS_DUPLICATE_ENTRY;
}
last = iter;
iter = iter->next;
}
if (last)
last->next = node;
else
*list = node;
node->next = iter;
return XSETTINGS_SUCCESS;
}
XSettingsResult
xsettings_list_delete (XSettingsList **list,
const char *name)
{
XSettingsList *iter;
XSettingsList *last = NULL;
iter = *list;
while (iter)
{
if (strcmp (name, iter->setting->name) == 0)
{
if (last)
last->next = iter->next;
else
*list = iter->next;
xsettings_setting_free (iter->setting);
free (iter);
return XSETTINGS_SUCCESS;
}
last = iter;
iter = iter->next;
}
return XSETTINGS_FAILED;
}
XSettingsSetting *
xsettings_list_lookup (XSettingsList *list,
const char *name)
{
XSettingsList *iter;
iter = list;
while (iter)
{
if (strcmp (name, iter->setting->name) == 0)
return iter->setting;
iter = iter->next;
}
return NULL;
}
char
xsettings_byte_order (void)
{
CARD32 myint = 0x01020304;
return (*(char *)&myint == 1) ? MSBFirst : LSBFirst;
}