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mutter/src/ui/theme-parser.c
Dan Winship c84da3ce1b Move the installed includes to a subdir 
If mutter is going to be a "real" library, then it should install its
includes so that users can do

    #include <meta/display.h>

rather than

    #include <display.h>

So rename the includedir accordingly, move src/include to src/meta,
and fix up all internal references.

There were a handful of header files in src/include that were not
installed; this appears to have been part of a plan to keep core/,
ui/, and compositor/ from looking at each others' private includes,
but that wasn't really working anyway. So move all non-installed
headers back into core/ or ui/.

https://bugzilla.gnome.org/show_bug.cgi?id=643959
2011-03-07 18:19:53 -05:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Metacity theme parsing */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 "theme-private.h"
#include <meta/util.h>
#include <string.h>
#include <stdlib.h>
/* We were intending to put the version number
* in the subdirectory name, but we ended up
* using the filename instead. The "-1" survives
* as a fossil.
*/
#define THEME_SUBDIR "metacity-1"
/* Highest version of the theme format to
* look out for.
*/
#define THEME_MAJOR_VERSION 3
#define THEME_MINOR_VERSION 3
#define THEME_VERSION (1000 * THEME_MAJOR_VERSION + THEME_MINOR_VERSION)
#define METACITY_THEME_FILENAME_FORMAT "metacity-theme-%d.xml"
typedef enum
{
STATE_START,
STATE_THEME,
/* info section */
STATE_INFO,
STATE_NAME,
STATE_AUTHOR,
STATE_COPYRIGHT,
STATE_DATE,
STATE_DESCRIPTION,
/* constants */
STATE_CONSTANT,
/* geometry */
STATE_FRAME_GEOMETRY,
STATE_DISTANCE,
STATE_BORDER,
STATE_ASPECT_RATIO,
/* draw ops */
STATE_DRAW_OPS,
STATE_LINE,
STATE_RECTANGLE,
STATE_ARC,
STATE_CLIP,
STATE_TINT,
STATE_GRADIENT,
STATE_IMAGE,
STATE_GTK_ARROW,
STATE_GTK_BOX,
STATE_GTK_VLINE,
STATE_ICON,
STATE_TITLE,
STATE_INCLUDE, /* include another draw op list */
STATE_TILE, /* tile another draw op list */
/* sub-parts of gradient */
STATE_COLOR,
/* frame style */
STATE_FRAME_STYLE,
STATE_PIECE,
STATE_BUTTON,
/* style set */
STATE_FRAME_STYLE_SET,
STATE_FRAME,
/* assigning style sets to windows */
STATE_WINDOW,
/* things we don't use any more but we can still parse: */
STATE_MENU_ICON,
STATE_FALLBACK
} ParseState;
typedef struct
{
/* This two lists contain stacks of state and required version
* (cast to pointers.) There is one list item for each currently
* open element. */
GSList *states;
GSList *required_versions;
const char *theme_name; /* name of theme (directory it's in) */
const char *theme_file; /* theme filename */
const char *theme_dir; /* dir the theme is inside */
MetaTheme *theme; /* theme being parsed */
guint format_version; /* version of format of theme file */
char *name; /* name of named thing being parsed */
MetaFrameLayout *layout; /* layout being parsed if any */
MetaDrawOpList *op_list; /* op list being parsed if any */
MetaDrawOp *op; /* op being parsed if any */
MetaFrameStyle *style; /* frame style being parsed if any */
MetaFrameStyleSet *style_set; /* frame style set being parsed if any */
MetaFramePiece piece; /* position of piece being parsed */
MetaButtonType button_type; /* type of button/menuitem being parsed */
MetaButtonState button_state; /* state of button being parsed */
int skip_level; /* depth of elements that we're ignoring */
} ParseInfo;
typedef enum {
THEME_PARSE_ERROR_TOO_OLD,
THEME_PARSE_ERROR_TOO_FAILED
} ThemeParseError;
static GQuark
theme_parse_error_quark (void)
{
return g_quark_from_static_string ("theme-parse-error-quark");
}
#define THEME_PARSE_ERROR (theme_parse_error_quark ())
static void set_error (GError **err,
GMarkupParseContext *context,
int error_domain,
int error_code,
const char *format,
...) G_GNUC_PRINTF (5, 6);
static void add_context_to_error (GError **err,
GMarkupParseContext *context);
static void parse_info_init (ParseInfo *info);
static void parse_info_free (ParseInfo *info);
static void push_state (ParseInfo *info,
ParseState state);
static void pop_state (ParseInfo *info);
static ParseState peek_state (ParseInfo *info);
static void parse_toplevel_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void parse_info_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void parse_geometry_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void parse_draw_op_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void parse_gradient_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void parse_style_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void parse_style_set_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void parse_piece_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void parse_button_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void parse_menu_icon_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error);
static void start_element_handler (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
gpointer user_data,
GError **error);
static void end_element_handler (GMarkupParseContext *context,
const gchar *element_name,
gpointer user_data,
GError **error);
static void text_handler (GMarkupParseContext *context,
const gchar *text,
gsize text_len,
gpointer user_data,
GError **error);
/* Translators: This means that an attribute which should have been found
* on an XML element was not in fact found.
*/
#define ATTRIBUTE_NOT_FOUND _("No \"%s\" attribute on element <%s>")
static GMarkupParser metacity_theme_parser = {
start_element_handler,
end_element_handler,
text_handler,
NULL,
NULL
};
static void
set_error (GError **err,
GMarkupParseContext *context,
int error_domain,
int error_code,
const char *format,
...)
{
int line, ch;
va_list args;
char *str;
g_markup_parse_context_get_position (context, &line, &ch);
va_start (args, format);
str = g_strdup_vprintf (format, args);
va_end (args);
g_set_error (err, error_domain, error_code,
_("Line %d character %d: %s"),
line, ch, str);
g_free (str);
}
static void
add_context_to_error (GError **err,
GMarkupParseContext *context)
{
int line, ch;
char *str;
if (err == NULL || *err == NULL)
return;
g_markup_parse_context_get_position (context, &line, &ch);
str = g_strdup_printf (_("Line %d character %d: %s"),
line, ch, (*err)->message);
g_free ((*err)->message);
(*err)->message = str;
}
static void
parse_info_init (ParseInfo *info)
{
info->theme_file = NULL;
info->states = g_slist_prepend (NULL, GINT_TO_POINTER (STATE_START));
info->required_versions = NULL;
info->theme = NULL;
info->name = NULL;
info->layout = NULL;
info->op_list = NULL;
info->op = NULL;
info->style = NULL;
info->style_set = NULL;
info->piece = META_FRAME_PIECE_LAST;
info->button_type = META_BUTTON_TYPE_LAST;
info->button_state = META_BUTTON_STATE_LAST;
info->skip_level = 0;
}
static void
parse_info_free (ParseInfo *info)
{
g_slist_free (info->states);
g_slist_free (info->required_versions);
if (info->theme)
meta_theme_free (info->theme);
if (info->layout)
meta_frame_layout_unref (info->layout);
if (info->op_list)
meta_draw_op_list_unref (info->op_list);
if (info->op)
meta_draw_op_free (info->op);
if (info->style)
meta_frame_style_unref (info->style);
if (info->style_set)
meta_frame_style_set_unref (info->style_set);
}
static void
push_state (ParseInfo *info,
ParseState state)
{
info->states = g_slist_prepend (info->states, GINT_TO_POINTER (state));
}
static void
pop_state (ParseInfo *info)
{
g_return_if_fail (info->states != NULL);
info->states = g_slist_remove (info->states, info->states->data);
}
static ParseState
peek_state (ParseInfo *info)
{
g_return_val_if_fail (info->states != NULL, STATE_START);
return GPOINTER_TO_INT (info->states->data);
}
static void
push_required_version (ParseInfo *info,
int version)
{
info->required_versions = g_slist_prepend (info->required_versions,
GINT_TO_POINTER (version));
}
static void
pop_required_version (ParseInfo *info)
{
g_return_if_fail (info->required_versions != NULL);
info->required_versions = g_slist_delete_link (info->required_versions, info->required_versions);
}
static int
peek_required_version (ParseInfo *info)
{
if (info->required_versions)
return GPOINTER_TO_INT (info->required_versions->data);
else
return info->format_version;
}
#define ELEMENT_IS(name) (strcmp (element_name, (name)) == 0)
typedef struct
{
const char *name;
const char **retloc;
gboolean required;
} LocateAttr;
/* Attribute names can have a leading '!' to indicate that they are
* required.
*/
static gboolean
locate_attributes (GMarkupParseContext *context,
const char *element_name,
const char **attribute_names,
const char **attribute_values,
GError **error,
const char *first_attribute_name,
const char **first_attribute_retloc,
...)
{
va_list args;
const char *name;
const char **retloc;
int n_attrs;
#define MAX_ATTRS 24
LocateAttr attrs[MAX_ATTRS];
gboolean retval;
int i;
g_return_val_if_fail (first_attribute_name != NULL, FALSE);
g_return_val_if_fail (first_attribute_retloc != NULL, FALSE);
retval = TRUE;
/* FIXME: duplicated code; refactor loop */
n_attrs = 1;
attrs[0].name = first_attribute_name;
attrs[0].retloc = first_attribute_retloc;
attrs[0].required = attrs[0].name[0]=='!';
if (attrs[0].required)
attrs[0].name++; /* skip past it */
*first_attribute_retloc = NULL;
va_start (args, first_attribute_retloc);
name = va_arg (args, const char*);
retloc = va_arg (args, const char**);
while (name != NULL)
{
g_return_val_if_fail (retloc != NULL, FALSE);
g_assert (n_attrs < MAX_ATTRS);
attrs[n_attrs].name = name;
attrs[n_attrs].retloc = retloc;
attrs[n_attrs].required = attrs[n_attrs].name[0]=='!';
if (attrs[n_attrs].required)
attrs[n_attrs].name++; /* skip past it */
n_attrs += 1;
*retloc = NULL;
name = va_arg (args, const char*);
retloc = va_arg (args, const char**);
}
va_end (args);
i = 0;
while (attribute_names[i])
{
int j;
gboolean found;
/* Can be present anywhere */
if (strcmp (attribute_names[i], "version") == 0)
{
++i;
continue;
}
found = FALSE;
j = 0;
while (j < n_attrs)
{
if (strcmp (attrs[j].name, attribute_names[i]) == 0)
{
retloc = attrs[j].retloc;
if (*retloc != NULL)
{
set_error (error, context,
G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Attribute \"%s\" repeated twice on the same <%s> element"),
attrs[j].name, element_name);
retval = FALSE;
goto out;
}
*retloc = attribute_values[i];
found = TRUE;
}
++j;
}
if (!found)
{
j = 0;
while (j < n_attrs)
{
g_warning ("It could have been %s.\n", attrs[j++].name);
}
set_error (error, context,
G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Attribute \"%s\" is invalid on <%s> element in this context"),
attribute_names[i], element_name);
retval = FALSE;
goto out;
}
++i;
}
/* Did we catch them all? */
i = 0;
while (i < n_attrs)
{
if (attrs[i].required && *(attrs[i].retloc)==NULL)
{
set_error (error, context,
G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
ATTRIBUTE_NOT_FOUND,
attrs[i].name, element_name);
retval = FALSE;
goto out;
}
++i;
}
out:
return retval;
}
static gboolean
check_no_attributes (GMarkupParseContext *context,
const char *element_name,
const char **attribute_names,
const char **attribute_values,
GError **error)
{
int i = 0;
/* Can be present anywhere */
if (attribute_names[0] && strcmp (attribute_names[i], "version") == 0)
i++;
if (attribute_names[i] != NULL)
{
set_error (error, context,
G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Attribute \"%s\" is invalid on <%s> element in this context"),
attribute_names[0], element_name);
return FALSE;
}
return TRUE;
}
#define MAX_REASONABLE 4096
static gboolean
parse_positive_integer (const char *str,
int *val,
GMarkupParseContext *context,
MetaTheme *theme,
GError **error)
{
char *end;
long l;
int j;
*val = 0;
end = NULL;
/* Is str a constant? */
if (META_THEME_ALLOWS (theme, META_THEME_UBIQUITOUS_CONSTANTS) &&
meta_theme_lookup_int_constant (theme, str, &j))
{
/* Yes. */
l = j;
}
else
{
/* No. Let's try parsing it instead. */
l = strtol (str, &end, 10);
if (end == NULL || end == str)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Could not parse \"%s\" as an integer"),
str);
return FALSE;
}
if (*end != '\0')
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand trailing characters \"%s\" in string \"%s\""),
end, str);
return FALSE;
}
}
if (l < 0)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Integer %ld must be positive"), l);
return FALSE;
}
if (l > MAX_REASONABLE)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Integer %ld is too large, current max is %d"),
l, MAX_REASONABLE);
return FALSE;
}
*val = (int) l;
return TRUE;
}
static gboolean
parse_double (const char *str,
double *val,
GMarkupParseContext *context,
GError **error)
{
char *end;
*val = 0;
end = NULL;
*val = g_ascii_strtod (str, &end);
if (end == NULL || end == str)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Could not parse \"%s\" as a floating point number"),
str);
return FALSE;
}
if (*end != '\0')
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand trailing characters \"%s\" in string \"%s\""),
end, str);
return FALSE;
}
return TRUE;
}
static gboolean
parse_boolean (const char *str,
gboolean *val,
GMarkupParseContext *context,
GError **error)
{
if (strcmp ("true", str) == 0)
*val = TRUE;
else if (strcmp ("false", str) == 0)
*val = FALSE;
else
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Boolean values must be \"true\" or \"false\" not \"%s\""),
str);
return FALSE;
}
return TRUE;
}
static gboolean
parse_rounding (const char *str,
guint *val,
GMarkupParseContext *context,
MetaTheme *theme,
GError **error)
{
if (strcmp ("true", str) == 0)
*val = 5; /* historical "true" value */
else if (strcmp ("false", str) == 0)
*val = 0;
else
{
int tmp;
gboolean result;
if (!META_THEME_ALLOWS (theme, META_THEME_VARIED_ROUND_CORNERS))
{
/* Not known in this version, so bail. */
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Boolean values must be \"true\" or \"false\" not \"%s\""),
str);
return FALSE;
}
result = parse_positive_integer (str, &tmp, context, theme, error);
*val = tmp;
return result;
}
return TRUE;
}
static gboolean
parse_angle (const char *str,
double *val,
GMarkupParseContext *context,
GError **error)
{
if (!parse_double (str, val, context, error))
return FALSE;
if (*val < (0.0 - 1e6) || *val > (360.0 + 1e6))
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Angle must be between 0.0 and 360.0, was %g\n"),
*val);
return FALSE;
}
return TRUE;
}
static gboolean
parse_alpha (const char *str,
MetaAlphaGradientSpec **spec_ret,
GMarkupParseContext *context,
GError **error)
{
char **split;
int i;
int n_alphas;
MetaAlphaGradientSpec *spec;
*spec_ret = NULL;
split = g_strsplit (str, ":", -1);
i = 0;
while (split[i])
++i;
if (i == 0)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Could not parse \"%s\" as a floating point number"),
str);
g_strfreev (split);
return FALSE;
}
n_alphas = i;
/* FIXME allow specifying horizontal/vertical/diagonal in theme format,
* once we implement vertical/diagonal in gradient.c
*/
spec = meta_alpha_gradient_spec_new (META_GRADIENT_HORIZONTAL,
n_alphas);
i = 0;
while (i < n_alphas)
{
double v;
if (!parse_double (split[i], &v, context, error))
{
/* clear up, but don't set error: it was set by parse_double */
g_strfreev (split);
meta_alpha_gradient_spec_free (spec);
return FALSE;
}
if (v < (0.0 - 1e-6) || v > (1.0 + 1e-6))
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Alpha must be between 0.0 (invisible) and 1.0 (fully opaque), was %g\n"),
v);
g_strfreev (split);
meta_alpha_gradient_spec_free (spec);
return FALSE;
}
spec->alphas[i] = (unsigned char) (v * 255);
++i;
}
g_strfreev (split);
*spec_ret = spec;
return TRUE;
}
static MetaColorSpec*
parse_color (MetaTheme *theme,
const char *str,
GError **err)
{
char* referent;
if (META_THEME_ALLOWS (theme, META_THEME_COLOR_CONSTANTS) &&
meta_theme_lookup_color_constant (theme, str, &referent))
{
if (referent)
return meta_color_spec_new_from_string (referent, err);
/* no need to free referent: it's a pointer into the actual hash table */
}
return meta_color_spec_new_from_string (str, err);
}
static gboolean
parse_title_scale (const char *str,
double *val,
GMarkupParseContext *context,
GError **error)
{
double factor;
if (strcmp (str, "xx-small") == 0)
factor = PANGO_SCALE_XX_SMALL;
else if (strcmp (str, "x-small") == 0)
factor = PANGO_SCALE_X_SMALL;
else if (strcmp (str, "small") == 0)
factor = PANGO_SCALE_SMALL;
else if (strcmp (str, "medium") == 0)
factor = PANGO_SCALE_MEDIUM;
else if (strcmp (str, "large") == 0)
factor = PANGO_SCALE_LARGE;
else if (strcmp (str, "x-large") == 0)
factor = PANGO_SCALE_X_LARGE;
else if (strcmp (str, "xx-large") == 0)
factor = PANGO_SCALE_XX_LARGE;
else
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Invalid title scale \"%s\" (must be one of xx-small,x-small,small,medium,large,x-large,xx-large)\n"),
str);
return FALSE;
}
*val = factor;
return TRUE;
}
static void
parse_toplevel_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_THEME);
if (ELEMENT_IS ("info"))
{
if (!check_no_attributes (context, element_name,
attribute_names, attribute_values,
error))
return;
push_state (info, STATE_INFO);
}
else if (ELEMENT_IS ("constant"))
{
const char *name;
const char *value;
int ival = 0;
double dval = 0.0;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!name", &name, "!value", &value,
NULL))
return;
/* We don't know how a a constant is going to be used, so we have guess its
* type from its contents:
*
* - Starts like a number and contains a '.': float constant
* - Starts like a number and doesn't contain a '.': int constant
* - Starts with anything else: a color constant.
* (colors always start with # or a letter)
*/
if (value[0] == '.' || value[0] == '+' || value[0] == '-' || (value[0] >= '0' && value[0] <= '9'))
{
if (strchr (value, '.'))
{
if (!parse_double (value, &dval, context, error))
return;
if (!meta_theme_define_float_constant (info->theme,
name,
dval,
error))
{
add_context_to_error (error, context);
return;
}
}
else
{
if (!parse_positive_integer (value, &ival, context, info->theme, error))
return;
if (!meta_theme_define_int_constant (info->theme,
name,
ival,
error))
{
add_context_to_error (error, context);
return;
}
}
}
else
{
if (!meta_theme_define_color_constant (info->theme,
name,
value,
error))
{
add_context_to_error (error, context);
return;
}
}
push_state (info, STATE_CONSTANT);
}
else if (ELEMENT_IS ("frame_geometry"))
{
const char *name = NULL;
const char *parent = NULL;
const char *has_title = NULL;
const char *title_scale = NULL;
const char *rounded_top_left = NULL;
const char *rounded_top_right = NULL;
const char *rounded_bottom_left = NULL;
const char *rounded_bottom_right = NULL;
const char *hide_buttons = NULL;
gboolean has_title_val;
guint rounded_top_left_val;
guint rounded_top_right_val;
guint rounded_bottom_left_val;
guint rounded_bottom_right_val;
gboolean hide_buttons_val;
double title_scale_val;
MetaFrameLayout *parent_layout;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!name", &name, "parent", &parent,
"has_title", &has_title, "title_scale", &title_scale,
"rounded_top_left", &rounded_top_left,
"rounded_top_right", &rounded_top_right,
"rounded_bottom_left", &rounded_bottom_left,
"rounded_bottom_right", &rounded_bottom_right,
"hide_buttons", &hide_buttons,
NULL))
return;
has_title_val = TRUE;
if (has_title && !parse_boolean (has_title, &has_title_val, context, error))
return;
hide_buttons_val = FALSE;
if (hide_buttons && !parse_boolean (hide_buttons, &hide_buttons_val, context, error))
return;
rounded_top_left_val = 0;
rounded_top_right_val = 0;
rounded_bottom_left_val = 0;
rounded_bottom_right_val = 0;
if (rounded_top_left && !parse_rounding (rounded_top_left, &rounded_top_left_val, context, info->theme, error))
return;
if (rounded_top_right && !parse_rounding (rounded_top_right, &rounded_top_right_val, context, info->theme, error))
return;
if (rounded_bottom_left && !parse_rounding (rounded_bottom_left, &rounded_bottom_left_val, context, info->theme, error))
return;
if (rounded_bottom_right && !parse_rounding (rounded_bottom_right, &rounded_bottom_right_val, context, info->theme, error))
return;
title_scale_val = 1.0;
if (title_scale && !parse_title_scale (title_scale, &title_scale_val, context, error))
return;
if (meta_theme_lookup_layout (info->theme, name))
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("<%s> name \"%s\" used a second time"),
element_name, name);
return;
}
parent_layout = NULL;
if (parent)
{
parent_layout = meta_theme_lookup_layout (info->theme, parent);
if (parent_layout == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("<%s> parent \"%s\" has not been defined"),
element_name, parent);
return;
}
}
g_assert (info->layout == NULL);
if (parent_layout)
info->layout = meta_frame_layout_copy (parent_layout);
else
info->layout = meta_frame_layout_new ();
if (has_title) /* only if explicit, otherwise inherit */
info->layout->has_title = has_title_val;
if (META_THEME_ALLOWS (info->theme, META_THEME_HIDDEN_BUTTONS) && hide_buttons_val)
info->layout->hide_buttons = hide_buttons_val;
if (title_scale)
info->layout->title_scale = title_scale_val;
if (rounded_top_left)
info->layout->top_left_corner_rounded_radius = rounded_top_left_val;
if (rounded_top_right)
info->layout->top_right_corner_rounded_radius = rounded_top_right_val;
if (rounded_bottom_left)
info->layout->bottom_left_corner_rounded_radius = rounded_bottom_left_val;
if (rounded_bottom_right)
info->layout->bottom_right_corner_rounded_radius = rounded_bottom_right_val;
meta_theme_insert_layout (info->theme, name, info->layout);
push_state (info, STATE_FRAME_GEOMETRY);
}
else if (ELEMENT_IS ("draw_ops"))
{
const char *name = NULL;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!name", &name,
NULL))
return;
if (meta_theme_lookup_draw_op_list (info->theme, name))
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("<%s> name \"%s\" used a second time"),
element_name, name);
return;
}
g_assert (info->op_list == NULL);
info->op_list = meta_draw_op_list_new (2);
meta_theme_insert_draw_op_list (info->theme, name, info->op_list);
push_state (info, STATE_DRAW_OPS);
}
else if (ELEMENT_IS ("frame_style"))
{
const char *name = NULL;
const char *parent = NULL;
const char *geometry = NULL;
const char *background = NULL;
const char *alpha = NULL;
MetaFrameStyle *parent_style;
MetaFrameLayout *layout;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!name", &name, "parent", &parent,
"geometry", &geometry,
"background", &background,
"alpha", &alpha,
NULL))
return;
if (meta_theme_lookup_style (info->theme, name))
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("<%s> name \"%s\" used a second time"),
element_name, name);
return;
}
parent_style = NULL;
if (parent)
{
parent_style = meta_theme_lookup_style (info->theme, parent);
if (parent_style == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("<%s> parent \"%s\" has not been defined"),
element_name, parent);
return;
}
}
layout = NULL;
if (geometry)
{
layout = meta_theme_lookup_layout (info->theme, geometry);
if (layout == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("<%s> geometry \"%s\" has not been defined"),
element_name, geometry);
return;
}
}
else if (parent_style)
{
layout = parent_style->layout;
}
if (layout == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("<%s> must specify either a geometry or a parent that has a geometry"),
element_name);
return;
}
g_assert (info->style == NULL);
info->style = meta_frame_style_new (parent_style);
g_assert (info->style->layout == NULL);
meta_frame_layout_ref (layout);
info->style->layout = layout;
if (background != NULL && META_THEME_ALLOWS (info->theme, META_THEME_FRAME_BACKGROUNDS))
{
info->style->window_background_color = meta_color_spec_new_from_string (background, error);
if (!info->style->window_background_color)
return;
if (alpha != NULL)
{
gboolean success;
MetaAlphaGradientSpec *alpha_vector;
g_clear_error (error);
/* fortunately, we already have a routine to parse alpha values,
* though it produces a vector of them, which is a superset of
* what we want.
*/
success = parse_alpha (alpha, &alpha_vector, context, error);
if (!success)
return;
/* alpha_vector->alphas must contain at least one element */
info->style->window_background_alpha = alpha_vector->alphas[0];
meta_alpha_gradient_spec_free (alpha_vector);
}
}
else if (alpha != NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("You must specify a background for an alpha value to be meaningful"));
return;
}
meta_theme_insert_style (info->theme, name, info->style);
push_state (info, STATE_FRAME_STYLE);
}
else if (ELEMENT_IS ("frame_style_set"))
{
const char *name = NULL;
const char *parent = NULL;
MetaFrameStyleSet *parent_set;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!name", &name, "parent", &parent,
NULL))
return;
if (meta_theme_lookup_style_set (info->theme, name))
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("<%s> name \"%s\" used a second time"),
element_name, name);
return;
}
parent_set = NULL;
if (parent)
{
parent_set = meta_theme_lookup_style_set (info->theme, parent);
if (parent_set == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("<%s> parent \"%s\" has not been defined"),
element_name, parent);
return;
}
}
g_assert (info->style_set == NULL);
info->style_set = meta_frame_style_set_new (parent_set);
meta_theme_insert_style_set (info->theme, name, info->style_set);
push_state (info, STATE_FRAME_STYLE_SET);
}
else if (ELEMENT_IS ("window"))
{
const char *type_name = NULL;
const char *style_set_name = NULL;
MetaFrameStyleSet *style_set;
MetaFrameType type;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!type", &type_name, "!style_set", &style_set_name,
NULL))
return;
type = meta_frame_type_from_string (type_name);
if (type == META_FRAME_TYPE_LAST ||
(type == META_FRAME_TYPE_ATTACHED && peek_required_version (info) < 3002))
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Unknown type \"%s\" on <%s> element"),
type_name, element_name);
return;
}
style_set = meta_theme_lookup_style_set (info->theme,
style_set_name);
if (style_set == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Unknown style_set \"%s\" on <%s> element"),
style_set_name, element_name);
return;
}
if (info->theme->style_sets_by_type[type] != NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Window type \"%s\" has already been assigned a style set"),
type_name);
return;
}
meta_frame_style_set_ref (style_set);
info->theme->style_sets_by_type[type] = style_set;
push_state (info, STATE_WINDOW);
}
else if (ELEMENT_IS ("menu_icon"))
{
/* Not supported any more, but we have to parse it if they include it,
* for backwards compatibility.
*/
g_assert (info->op_list == NULL);
push_state (info, STATE_MENU_ICON);
}
else if (ELEMENT_IS ("fallback"))
{
/* Not supported any more, but we have to parse it if they include it,
* for backwards compatibility.
*/
push_state (info, STATE_FALLBACK);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "metacity_theme");
}
}
static void
parse_info_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_INFO);
if (ELEMENT_IS ("name"))
{
if (!check_no_attributes (context, element_name,
attribute_names, attribute_values,
error))
return;
push_state (info, STATE_NAME);
}
else if (ELEMENT_IS ("author"))
{
if (!check_no_attributes (context, element_name,
attribute_names, attribute_values,
error))
return;
push_state (info, STATE_AUTHOR);
}
else if (ELEMENT_IS ("copyright"))
{
if (!check_no_attributes (context, element_name,
attribute_names, attribute_values,
error))
return;
push_state (info, STATE_COPYRIGHT);
}
else if (ELEMENT_IS ("description"))
{
if (!check_no_attributes (context, element_name,
attribute_names, attribute_values,
error))
return;
push_state (info, STATE_DESCRIPTION);
}
else if (ELEMENT_IS ("date"))
{
if (!check_no_attributes (context, element_name,
attribute_names, attribute_values,
error))
return;
push_state (info, STATE_DATE);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "info");
}
}
static void
parse_distance (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
const char *name;
const char *value;
int val;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!name", &name, "!value", &value,
NULL))
return;
val = 0;
if (!parse_positive_integer (value, &val, context, info->theme, error))
return;
g_assert (val >= 0); /* yeah, "non-negative" not "positive" get over it */
g_assert (info->layout);
if (strcmp (name, "left_width") == 0)
info->layout->left_width = val;
else if (strcmp (name, "right_width") == 0)
info->layout->right_width = val;
else if (strcmp (name, "bottom_height") == 0)
info->layout->bottom_height = val;
else if (strcmp (name, "title_vertical_pad") == 0)
info->layout->title_vertical_pad = val;
else if (strcmp (name, "right_titlebar_edge") == 0)
info->layout->right_titlebar_edge = val;
else if (strcmp (name, "left_titlebar_edge") == 0)
info->layout->left_titlebar_edge = val;
else if (strcmp (name, "button_width") == 0)
{
info->layout->button_width = val;
if (!(info->layout->button_sizing == META_BUTTON_SIZING_LAST ||
info->layout->button_sizing == META_BUTTON_SIZING_FIXED))
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Cannot specify both \"button_width\"/\"button_height\" and \"aspect_ratio\" for buttons"));
return;
}
info->layout->button_sizing = META_BUTTON_SIZING_FIXED;
}
else if (strcmp (name, "button_height") == 0)
{
info->layout->button_height = val;
if (!(info->layout->button_sizing == META_BUTTON_SIZING_LAST ||
info->layout->button_sizing == META_BUTTON_SIZING_FIXED))
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Cannot specify both \"button_width\"/\"button_height\" and \"aspect_ratio\" for buttons"));
return;
}
info->layout->button_sizing = META_BUTTON_SIZING_FIXED;
}
else
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Distance \"%s\" is unknown"), name);
return;
}
}
static void
parse_aspect_ratio (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
const char *name;
const char *value;
double val;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!name", &name, "!value", &value,
NULL))
return;
val = 0;
if (!parse_double (value, &val, context, error))
return;
g_assert (info->layout);
if (strcmp (name, "button") == 0)
{
info->layout->button_aspect = val;
if (info->layout->button_sizing != META_BUTTON_SIZING_LAST)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Cannot specify both \"button_width\"/\"button_height\" and \"aspect_ratio\" for buttons"));
return;
}
info->layout->button_sizing = META_BUTTON_SIZING_ASPECT;
}
else
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Aspect ratio \"%s\" is unknown"), name);
return;
}
}
static void
parse_border (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
const char *name;
const char *top;
const char *bottom;
const char *left;
const char *right;
int top_val;
int bottom_val;
int left_val;
int right_val;
GtkBorder *border;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!name", &name,
"!top", &top,
"!bottom", &bottom,
"!left", &left,
"!right", &right,
NULL))
return;
top_val = 0;
if (!parse_positive_integer (top, &top_val, context, info->theme, error))
return;
bottom_val = 0;
if (!parse_positive_integer (bottom, &bottom_val, context, info->theme, error))
return;
left_val = 0;
if (!parse_positive_integer (left, &left_val, context, info->theme, error))
return;
right_val = 0;
if (!parse_positive_integer (right, &right_val, context, info->theme, error))
return;
g_assert (info->layout);
border = NULL;
if (strcmp (name, "title_border") == 0)
border = &info->layout->title_border;
else if (strcmp (name, "button_border") == 0)
border = &info->layout->button_border;
if (border == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Border \"%s\" is unknown"), name);
return;
}
border->top = top_val;
border->bottom = bottom_val;
border->left = left_val;
border->right = right_val;
}
static void
parse_geometry_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_FRAME_GEOMETRY);
if (ELEMENT_IS ("distance"))
{
parse_distance (context, element_name,
attribute_names, attribute_values,
info, error);
push_state (info, STATE_DISTANCE);
}
else if (ELEMENT_IS ("border"))
{
parse_border (context, element_name,
attribute_names, attribute_values,
info, error);
push_state (info, STATE_BORDER);
}
else if (ELEMENT_IS ("aspect_ratio"))
{
parse_aspect_ratio (context, element_name,
attribute_names, attribute_values,
info, error);
push_state (info, STATE_ASPECT_RATIO);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "frame_geometry");
}
}
#if 0
static gboolean
check_expression (PosToken *tokens,
int n_tokens,
gboolean has_object,
MetaTheme *theme,
GMarkupParseContext *context,
GError **error)
{
MetaPositionExprEnv env;
int x, y;
/* We set it all to 0 to try and catch divide-by-zero screwups.
* it's possible we should instead guarantee that widths and heights
* are at least 1.
*/
env.rect = meta_rect (0, 0, 0, 0);
if (has_object)
{
env.object_width = 0;
env.object_height = 0;
}
else
{
env.object_width = -1;
env.object_height = -1;
}
env.left_width = 0;
env.right_width = 0;
env.top_height = 0;
env.bottom_height = 0;
env.title_width = 0;
env.title_height = 0;
env.icon_width = 0;
env.icon_height = 0;
env.mini_icon_width = 0;
env.mini_icon_height = 0;
env.theme = theme;
if (!meta_parse_position_expression (tokens, n_tokens,
&env,
&x, &y,
error))
{
add_context_to_error (error, context);
return FALSE;
}
return TRUE;
}
#endif
static void
parse_draw_op_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_DRAW_OPS);
if (ELEMENT_IS ("line"))
{
MetaDrawOp *op;
const char *color;
const char *x1;
const char *y1;
const char *x2;
const char *y2;
const char *dash_on_length;
const char *dash_off_length;
const char *width;
MetaColorSpec *color_spec;
int dash_on_val;
int dash_off_val;
int width_val;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!color", &color,
"!x1", &x1, "!y1", &y1,
"!x2", &x2, "!y2", &y2,
"dash_on_length", &dash_on_length,
"dash_off_length", &dash_off_length,
"width", &width,
NULL))
return;
#if 0
if (!check_expression (x1, FALSE, info->theme, context, error))
return;
if (!check_expression (y1, FALSE, info->theme, context, error))
return;
if (!check_expression (x2, FALSE, info->theme, context, error))
return;
if (!check_expression (y2, FALSE, info->theme, context, error))
return;
#endif
dash_on_val = 0;
if (dash_on_length &&
!parse_positive_integer (dash_on_length, &dash_on_val, context, info->theme, error))
return;
dash_off_val = 0;
if (dash_off_length &&
!parse_positive_integer (dash_off_length, &dash_off_val, context, info->theme, error))
return;
width_val = 0;
if (width &&
!parse_positive_integer (width, &width_val, context, info->theme, error))
return;
/* Check last so we don't have to free it when other
* stuff fails
*/
color_spec = parse_color (info->theme, color, error);
if (color_spec == NULL)
{
add_context_to_error (error, context);
return;
}
op = meta_draw_op_new (META_DRAW_LINE);
op->data.line.color_spec = color_spec;
op->data.line.x1 = meta_draw_spec_new (info->theme, x1, NULL);
op->data.line.y1 = meta_draw_spec_new (info->theme, y1, NULL);
if (strcmp(x1, x2)==0)
op->data.line.x2 = NULL;
else
op->data.line.x2 = meta_draw_spec_new (info->theme, x2, NULL);
if (strcmp(y1, y2)==0)
op->data.line.y2 = NULL;
else
op->data.line.y2 = meta_draw_spec_new (info->theme, y2, NULL);
op->data.line.width = width_val;
op->data.line.dash_on_length = dash_on_val;
op->data.line.dash_off_length = dash_off_val;
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_LINE);
}
else if (ELEMENT_IS ("rectangle"))
{
MetaDrawOp *op;
const char *color;
const char *x;
const char *y;
const char *width;
const char *height;
const char *filled;
gboolean filled_val;
MetaColorSpec *color_spec;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!color", &color,
"!x", &x, "!y", &y,
"!width", &width, "!height", &height,
"filled", &filled,
NULL))
return;
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y, FALSE, info->theme, context, error))
return;
if (!check_expression (width, FALSE, info->theme, context, error))
return;
if (!check_expression (height, FALSE, info->theme, context, error))
return;
#endif
filled_val = FALSE;
if (filled && !parse_boolean (filled, &filled_val, context, error))
return;
/* Check last so we don't have to free it when other
* stuff fails
*/
color_spec = parse_color (info->theme, color, error);
if (color_spec == NULL)
{
add_context_to_error (error, context);
return;
}
op = meta_draw_op_new (META_DRAW_RECTANGLE);
op->data.rectangle.color_spec = color_spec;
op->data.rectangle.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.rectangle.y = meta_draw_spec_new (info->theme, y, NULL);
op->data.rectangle.width = meta_draw_spec_new (info->theme, width, NULL);
op->data.rectangle.height = meta_draw_spec_new (info->theme,
height, NULL);
op->data.rectangle.filled = filled_val;
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_RECTANGLE);
}
else if (ELEMENT_IS ("arc"))
{
MetaDrawOp *op;
const char *color;
const char *x;
const char *y;
const char *width;
const char *height;
const char *filled;
const char *start_angle;
const char *extent_angle;
const char *from;
const char *to;
gboolean filled_val;
double start_angle_val;
double extent_angle_val;
MetaColorSpec *color_spec;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!color", &color,
"!x", &x, "!y", &y,
"!width", &width, "!height", &height,
"filled", &filled,
"start_angle", &start_angle,
"extent_angle", &extent_angle,
"from", &from,
"to", &to,
NULL))
return;
if (META_THEME_ALLOWS (info->theme, META_THEME_DEGREES_IN_ARCS) )
{
if (start_angle == NULL && from == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("No \"start_angle\" or \"from\" attribute on element <%s>"), element_name);
return;
}
if (extent_angle == NULL && to == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("No \"extent_angle\" or \"to\" attribute on element <%s>"), element_name);
return;
}
}
else
{
if (start_angle == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
ATTRIBUTE_NOT_FOUND, "start_angle", element_name);
return;
}
if (extent_angle == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
ATTRIBUTE_NOT_FOUND, "extent_angle", element_name);
return;
}
}
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y, FALSE, info->theme, context, error))
return;
if (!check_expression (width, FALSE, info->theme, context, error))
return;
if (!check_expression (height, FALSE, info->theme, context, error))
return;
#endif
if (start_angle == NULL)
{
if (!parse_angle (from, &start_angle_val, context, error))
return;
start_angle_val = (180-start_angle_val)/360.0;
}
else
{
if (!parse_angle (start_angle, &start_angle_val, context, error))
return;
}
if (extent_angle == NULL)
{
if (!parse_angle (to, &extent_angle_val, context, error))
return;
extent_angle_val = ((180-extent_angle_val)/360.0) - start_angle_val;
}
else
{
if (!parse_angle (extent_angle, &extent_angle_val, context, error))
return;
}
filled_val = FALSE;
if (filled && !parse_boolean (filled, &filled_val, context, error))
return;
/* Check last so we don't have to free it when other
* stuff fails
*/
color_spec = parse_color (info->theme, color, error);
if (color_spec == NULL)
{
add_context_to_error (error, context);
return;
}
op = meta_draw_op_new (META_DRAW_ARC);
op->data.arc.color_spec = color_spec;
op->data.arc.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.arc.y = meta_draw_spec_new (info->theme, y, NULL);
op->data.arc.width = meta_draw_spec_new (info->theme, width, NULL);
op->data.arc.height = meta_draw_spec_new (info->theme, height, NULL);
op->data.arc.filled = filled_val;
op->data.arc.start_angle = start_angle_val;
op->data.arc.extent_angle = extent_angle_val;
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_ARC);
}
else if (ELEMENT_IS ("clip"))
{
MetaDrawOp *op;
const char *x;
const char *y;
const char *width;
const char *height;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!x", &x, "!y", &y,
"!width", &width, "!height", &height,
NULL))
return;
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y, FALSE, info->theme, context, error))
return;
if (!check_expression (width, FALSE, info->theme, context, error))
return;
if (!check_expression (height, FALSE, info->theme, context, error))
return;
#endif
op = meta_draw_op_new (META_DRAW_CLIP);
op->data.clip.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.clip.y = meta_draw_spec_new (info->theme, y, NULL);
op->data.clip.width = meta_draw_spec_new (info->theme, width, NULL);
op->data.clip.height = meta_draw_spec_new (info->theme, height, NULL);
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_CLIP);
}
else if (ELEMENT_IS ("tint"))
{
MetaDrawOp *op;
const char *color;
const char *x;
const char *y;
const char *width;
const char *height;
const char *alpha;
MetaAlphaGradientSpec *alpha_spec;
MetaColorSpec *color_spec;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!color", &color,
"!x", &x, "!y", &y,
"!width", &width, "!height", &height,
"!alpha", &alpha,
NULL))
return;
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y, FALSE, info->theme, context, error))
return;
if (!check_expression (width, FALSE, info->theme, context, error))
return;
if (!check_expression (height, FALSE, info->theme, context, error))
return;
#endif
alpha_spec = NULL;
if (!parse_alpha (alpha, &alpha_spec, context, error))
return;
/* Check last so we don't have to free it when other
* stuff fails
*/
color_spec = parse_color (info->theme, color, error);
if (color_spec == NULL)
{
if (alpha_spec)
meta_alpha_gradient_spec_free (alpha_spec);
add_context_to_error (error, context);
return;
}
op = meta_draw_op_new (META_DRAW_TINT);
op->data.tint.color_spec = color_spec;
op->data.tint.alpha_spec = alpha_spec;
op->data.tint.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.tint.y = meta_draw_spec_new (info->theme, y, NULL);
op->data.tint.width = meta_draw_spec_new (info->theme, width, NULL);
op->data.tint.height = meta_draw_spec_new (info->theme, height, NULL);
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_TINT);
}
else if (ELEMENT_IS ("gradient"))
{
const char *x;
const char *y;
const char *width;
const char *height;
const char *type;
const char *alpha;
MetaAlphaGradientSpec *alpha_spec;
MetaGradientType type_val;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!type", &type,
"!x", &x, "!y", &y,
"!width", &width, "!height", &height,
"alpha", &alpha,
NULL))
return;
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y, FALSE, info->theme, context, error))
return;
if (!check_expression (width, FALSE, info->theme, context, error))
return;
if (!check_expression (height, FALSE, info->theme, context, error))
return;
#endif
type_val = meta_gradient_type_from_string (type);
if (type_val == META_GRADIENT_LAST)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Did not understand value \"%s\" for type of gradient"),
type);
return;
}
alpha_spec = NULL;
if (alpha && !parse_alpha (alpha, &alpha_spec, context, error))
return;
g_assert (info->op == NULL);
info->op = meta_draw_op_new (META_DRAW_GRADIENT);
info->op->data.gradient.x = meta_draw_spec_new (info->theme, x, NULL);
info->op->data.gradient.y = meta_draw_spec_new (info->theme, y, NULL);
info->op->data.gradient.width = meta_draw_spec_new (info->theme,
width, NULL);
info->op->data.gradient.height = meta_draw_spec_new (info->theme,
height, NULL);
info->op->data.gradient.gradient_spec = meta_gradient_spec_new (type_val);
info->op->data.gradient.alpha_spec = alpha_spec;
push_state (info, STATE_GRADIENT);
/* op gets appended on close tag */
}
else if (ELEMENT_IS ("image"))
{
MetaDrawOp *op;
const char *filename;
const char *x;
const char *y;
const char *width;
const char *height;
const char *alpha;
const char *colorize;
const char *fill_type;
MetaAlphaGradientSpec *alpha_spec;
GdkPixbuf *pixbuf;
MetaColorSpec *colorize_spec = NULL;
MetaImageFillType fill_type_val;
int h, w, c;
int pixbuf_width, pixbuf_height, pixbuf_n_channels, pixbuf_rowstride;
guchar *pixbuf_pixels;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!x", &x, "!y", &y,
"!width", &width, "!height", &height,
"alpha", &alpha, "!filename", &filename,
"colorize", &colorize,
"fill_type", &fill_type,
NULL))
return;
#if 0
if (!check_expression (x, TRUE, info->theme, context, error))
return;
if (!check_expression (y, TRUE, info->theme, context, error))
return;
if (!check_expression (width, TRUE, info->theme, context, error))
return;
if (!check_expression (height, TRUE, info->theme, context, error))
return;
#endif
fill_type_val = META_IMAGE_FILL_SCALE;
if (fill_type)
{
fill_type_val = meta_image_fill_type_from_string (fill_type);
if (((int) fill_type_val) == -1)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand fill type \"%s\" for <%s> element"),
fill_type, element_name);
}
}
/* Check last so we don't have to free it when other
* stuff fails.
*
* If it's a theme image, ask for it at 64px, which is
* the largest possible. We scale it anyway.
*/
pixbuf = meta_theme_load_image (info->theme, filename, 64, error);
if (pixbuf == NULL)
{
add_context_to_error (error, context);
return;
}
if (colorize)
{
colorize_spec = parse_color (info->theme, colorize, error);
if (colorize_spec == NULL)
{
add_context_to_error (error, context);
g_object_unref (G_OBJECT (pixbuf));
return;
}
}
alpha_spec = NULL;
if (alpha && !parse_alpha (alpha, &alpha_spec, context, error))
{
g_object_unref (G_OBJECT (pixbuf));
return;
}
op = meta_draw_op_new (META_DRAW_IMAGE);
op->data.image.pixbuf = pixbuf;
op->data.image.colorize_spec = colorize_spec;
op->data.image.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.image.y = meta_draw_spec_new (info->theme, y, NULL);
op->data.image.width = meta_draw_spec_new (info->theme, width, NULL);
op->data.image.height = meta_draw_spec_new (info->theme, height, NULL);
op->data.image.alpha_spec = alpha_spec;
op->data.image.fill_type = fill_type_val;
/* Check for vertical & horizontal stripes */
pixbuf_n_channels = gdk_pixbuf_get_n_channels(pixbuf);
pixbuf_width = gdk_pixbuf_get_width(pixbuf);
pixbuf_height = gdk_pixbuf_get_height(pixbuf);
pixbuf_rowstride = gdk_pixbuf_get_rowstride(pixbuf);
pixbuf_pixels = gdk_pixbuf_get_pixels(pixbuf);
/* Check for horizontal stripes */
for (h = 0; h < pixbuf_height; h++)
{
for (w = 1; w < pixbuf_width; w++)
{
for (c = 0; c < pixbuf_n_channels; c++)
{
if (pixbuf_pixels[(h * pixbuf_rowstride) + c] !=
pixbuf_pixels[(h * pixbuf_rowstride) + w + c])
break;
}
if (c < pixbuf_n_channels)
break;
}
if (w < pixbuf_width)
break;
}
if (h >= pixbuf_height)
{
op->data.image.horizontal_stripes = TRUE;
}
else
{
op->data.image.horizontal_stripes = FALSE;
}
/* Check for vertical stripes */
for (w = 0; w < pixbuf_width; w++)
{
for (h = 1; h < pixbuf_height; h++)
{
for (c = 0; c < pixbuf_n_channels; c++)
{
if (pixbuf_pixels[w + c] !=
pixbuf_pixels[(h * pixbuf_rowstride) + w + c])
break;
}
if (c < pixbuf_n_channels)
break;
}
if (h < pixbuf_height)
break;
}
if (w >= pixbuf_width)
{
op->data.image.vertical_stripes = TRUE;
}
else
{
op->data.image.vertical_stripes = FALSE;
}
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_IMAGE);
}
else if (ELEMENT_IS ("gtk_arrow"))
{
MetaDrawOp *op;
const char *state;
const char *shadow;
const char *arrow;
const char *x;
const char *y;
const char *width;
const char *height;
const char *filled;
gboolean filled_val;
GtkStateType state_val;
GtkShadowType shadow_val;
GtkArrowType arrow_val;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!state", &state,
"!shadow", &shadow,
"!arrow", &arrow,
"!x", &x, "!y", &y,
"!width", &width, "!height", &height,
"filled", &filled,
NULL))
return;
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y, FALSE, info->theme, context, error))
return;
if (!check_expression (width, FALSE, info->theme, context, error))
return;
if (!check_expression (height, FALSE, info->theme, context, error))
return;
#endif
filled_val = TRUE;
if (filled && !parse_boolean (filled, &filled_val, context, error))
return;
state_val = meta_gtk_state_from_string (state);
if (((int) state_val) == -1)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand state \"%s\" for <%s> element"),
state, element_name);
return;
}
shadow_val = meta_gtk_shadow_from_string (shadow);
if (((int) shadow_val) == -1)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand shadow \"%s\" for <%s> element"),
shadow, element_name);
return;
}
arrow_val = meta_gtk_arrow_from_string (arrow);
if (((int) arrow_val) == -1)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand arrow \"%s\" for <%s> element"),
arrow, element_name);
return;
}
op = meta_draw_op_new (META_DRAW_GTK_ARROW);
op->data.gtk_arrow.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.gtk_arrow.y = meta_draw_spec_new (info->theme, y, NULL);
op->data.gtk_arrow.width = meta_draw_spec_new (info->theme, width, NULL);
op->data.gtk_arrow.height = meta_draw_spec_new (info->theme,
height, NULL);
op->data.gtk_arrow.filled = filled_val;
op->data.gtk_arrow.state = state_val;
op->data.gtk_arrow.shadow = shadow_val;
op->data.gtk_arrow.arrow = arrow_val;
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_GTK_ARROW);
}
else if (ELEMENT_IS ("gtk_box"))
{
MetaDrawOp *op;
const char *state;
const char *shadow;
const char *x;
const char *y;
const char *width;
const char *height;
GtkStateType state_val;
GtkShadowType shadow_val;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!state", &state,
"!shadow", &shadow,
"!x", &x, "!y", &y,
"!width", &width, "!height", &height,
NULL))
return;
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y, FALSE, info->theme, context, error))
return;
if (!check_expression (width, FALSE, info->theme, context, error))
return;
if (!check_expression (height, FALSE, info->theme, context, error))
return;
#endif
state_val = meta_gtk_state_from_string (state);
if (((int) state_val) == -1)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand state \"%s\" for <%s> element"),
state, element_name);
return;
}
shadow_val = meta_gtk_shadow_from_string (shadow);
if (((int) shadow_val) == -1)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand shadow \"%s\" for <%s> element"),
shadow, element_name);
return;
}
op = meta_draw_op_new (META_DRAW_GTK_BOX);
op->data.gtk_box.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.gtk_box.y = meta_draw_spec_new (info->theme, y, NULL);
op->data.gtk_box.width = meta_draw_spec_new (info->theme, width, NULL);
op->data.gtk_box.height = meta_draw_spec_new (info->theme, height, NULL);
op->data.gtk_box.state = state_val;
op->data.gtk_box.shadow = shadow_val;
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_GTK_BOX);
}
else if (ELEMENT_IS ("gtk_vline"))
{
MetaDrawOp *op;
const char *state;
const char *x;
const char *y1;
const char *y2;
GtkStateType state_val;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!state", &state,
"!x", &x, "!y1", &y1, "!y2", &y2,
NULL))
return;
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y1, FALSE, info->theme, context, error))
return;
if (!check_expression (y2, FALSE, info->theme, context, error))
return;
#endif
state_val = meta_gtk_state_from_string (state);
if (((int) state_val) == -1)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand state \"%s\" for <%s> element"),
state, element_name);
return;
}
op = meta_draw_op_new (META_DRAW_GTK_VLINE);
op->data.gtk_vline.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.gtk_vline.y1 = meta_draw_spec_new (info->theme, y1, NULL);
op->data.gtk_vline.y2 = meta_draw_spec_new (info->theme, y2, NULL);
op->data.gtk_vline.state = state_val;
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_GTK_VLINE);
}
else if (ELEMENT_IS ("icon"))
{
MetaDrawOp *op;
const char *x;
const char *y;
const char *width;
const char *height;
const char *alpha;
const char *fill_type;
MetaAlphaGradientSpec *alpha_spec;
MetaImageFillType fill_type_val;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!x", &x, "!y", &y,
"!width", &width, "!height", &height,
"alpha", &alpha,
"fill_type", &fill_type,
NULL))
return;
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y, FALSE, info->theme, context, error))
return;
if (!check_expression (width, FALSE, info->theme, context, error))
return;
if (!check_expression (height, FALSE, info->theme, context, error))
return;
#endif
fill_type_val = META_IMAGE_FILL_SCALE;
if (fill_type)
{
fill_type_val = meta_image_fill_type_from_string (fill_type);
if (((int) fill_type_val) == -1)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Did not understand fill type \"%s\" for <%s> element"),
fill_type, element_name);
}
}
alpha_spec = NULL;
if (alpha && !parse_alpha (alpha, &alpha_spec, context, error))
return;
op = meta_draw_op_new (META_DRAW_ICON);
op->data.icon.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.icon.y = meta_draw_spec_new (info->theme, y, NULL);
op->data.icon.width = meta_draw_spec_new (info->theme, width, NULL);
op->data.icon.height = meta_draw_spec_new (info->theme, height, NULL);
op->data.icon.alpha_spec = alpha_spec;
op->data.icon.fill_type = fill_type_val;
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_ICON);
}
else if (ELEMENT_IS ("title"))
{
MetaDrawOp *op;
const char *color;
const char *x;
const char *y;
const char *ellipsize_width;
MetaColorSpec *color_spec;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!color", &color,
"!x", &x, "!y", &y,
"ellipsize_width", &ellipsize_width,
NULL))
return;
#if 0
if (!check_expression (x, FALSE, info->theme, context, error))
return;
if (!check_expression (y, FALSE, info->theme, context, error))
return;
if (!check_expression (ellipsize_width, FALSE, info->theme, context, error))
return;
#endif
if (ellipsize_width && peek_required_version (info) < 3001)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
ATTRIBUTE_NOT_FOUND, "ellipsize_width", element_name);
return;
}
/* Check last so we don't have to free it when other
* stuff fails
*/
color_spec = parse_color (info->theme, color, error);
if (color_spec == NULL)
{
add_context_to_error (error, context);
return;
}
op = meta_draw_op_new (META_DRAW_TITLE);
op->data.title.color_spec = color_spec;
op->data.title.x = meta_draw_spec_new (info->theme, x, NULL);
op->data.title.y = meta_draw_spec_new (info->theme, y, NULL);
if (ellipsize_width)
op->data.title.ellipsize_width = meta_draw_spec_new (info->theme, ellipsize_width, NULL);
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_TITLE);
}
else if (ELEMENT_IS ("include"))
{
MetaDrawOp *op;
const char *name;
const char *x;
const char *y;
const char *width;
const char *height;
MetaDrawOpList *op_list;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"x", &x, "y", &y,
"width", &width, "height", &height,
"!name", &name,
NULL))
return;
/* x/y/width/height default to 0,0,width,height - should
* probably do this for all the draw ops
*/
#if 0
if (x && !check_expression (x, FALSE, info->theme, context, error))
return;
if (y && !check_expression (y, FALSE, info->theme, context, error))
return;
if (width && !check_expression (width, FALSE, info->theme, context, error))
return;
if (height && !check_expression (height, FALSE, info->theme, context, error))
return;
#endif
op_list = meta_theme_lookup_draw_op_list (info->theme,
name);
if (op_list == NULL)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("No <draw_ops> called \"%s\" has been defined"),
name);
return;
}
g_assert (info->op_list);
if (op_list == info->op_list ||
meta_draw_op_list_contains (op_list, info->op_list))
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Including draw_ops \"%s\" here would create a circular reference"),
name);
return;
}
op = meta_draw_op_new (META_DRAW_OP_LIST);
meta_draw_op_list_ref (op_list);
op->data.op_list.op_list = op_list;
op->data.op_list.x = meta_draw_spec_new (info->theme, x ? x : "0", NULL);
op->data.op_list.y = meta_draw_spec_new (info->theme, y ? y : "0", NULL);
op->data.op_list.width = meta_draw_spec_new (info->theme,
width ? width : "width",
NULL);
op->data.op_list.height = meta_draw_spec_new (info->theme,
height ? height : "height",
NULL);
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_INCLUDE);
}
else if (ELEMENT_IS ("tile"))
{
MetaDrawOp *op;
const char *name;
const char *x;
const char *y;
const char *width;
const char *height;
const char *tile_xoffset;
const char *tile_yoffset;
const char *tile_width;
const char *tile_height;
MetaDrawOpList *op_list;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"x", &x, "y", &y,
"width", &width, "height", &height,
"!name", &name,
"tile_xoffset", &tile_xoffset,
"tile_yoffset", &tile_yoffset,
"!tile_width", &tile_width,
"!tile_height", &tile_height,
NULL))
return;
/* These default to 0 */
#if 0
if (tile_xoffset && !check_expression (tile_xoffset, FALSE, info->theme, context, error))
return;
if (tile_yoffset && !check_expression (tile_yoffset, FALSE, info->theme, context, error))
return;
/* x/y/width/height default to 0,0,width,height - should
* probably do this for all the draw ops
*/
if (x && !check_expression (x, FALSE, info->theme, context, error))
return;
if (y && !check_expression (y, FALSE, info->theme, context, error))
return;
if (width && !check_expression (width, FALSE, info->theme, context, error))
return;
if (height && !check_expression (height, FALSE, info->theme, context, error))
return;
if (!check_expression (tile_width, FALSE, info->theme, context, error))
return;
if (!check_expression (tile_height, FALSE, info->theme, context, error))
return;
#endif
op_list = meta_theme_lookup_draw_op_list (info->theme,
name);
if (op_list == NULL)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("No <draw_ops> called \"%s\" has been defined"),
name);
return;
}
g_assert (info->op_list);
if (op_list == info->op_list ||
meta_draw_op_list_contains (op_list, info->op_list))
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("Including draw_ops \"%s\" here would create a circular reference"),
name);
return;
}
op = meta_draw_op_new (META_DRAW_TILE);
meta_draw_op_list_ref (op_list);
op->data.tile.x = meta_draw_spec_new (info->theme, x ? x : "0", NULL);
op->data.tile.y = meta_draw_spec_new (info->theme, y ? y : "0", NULL);
op->data.tile.width = meta_draw_spec_new (info->theme,
width ? width : "width",
NULL);
op->data.tile.height = meta_draw_spec_new (info->theme,
height ? height : "height",
NULL);
op->data.tile.tile_xoffset = meta_draw_spec_new (info->theme,
tile_xoffset ? tile_xoffset : "0",
NULL);
op->data.tile.tile_yoffset = meta_draw_spec_new (info->theme,
tile_yoffset ? tile_yoffset : "0",
NULL);
op->data.tile.tile_width = meta_draw_spec_new (info->theme, tile_width, NULL);
op->data.tile.tile_height = meta_draw_spec_new (info->theme, tile_height, NULL);
op->data.tile.op_list = op_list;
meta_draw_op_list_append (info->op_list, op);
push_state (info, STATE_TILE);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "draw_ops");
}
}
static void
parse_gradient_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_GRADIENT);
if (ELEMENT_IS ("color"))
{
const char *value = NULL;
MetaColorSpec *color_spec;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!value", &value,
NULL))
return;
color_spec = parse_color (info->theme, value, error);
if (color_spec == NULL)
{
add_context_to_error (error, context);
return;
}
g_assert (info->op);
g_assert (info->op->type == META_DRAW_GRADIENT);
g_assert (info->op->data.gradient.gradient_spec != NULL);
info->op->data.gradient.gradient_spec->color_specs =
g_slist_append (info->op->data.gradient.gradient_spec->color_specs,
color_spec);
push_state (info, STATE_COLOR);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "gradient");
}
}
static void
parse_style_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_FRAME_STYLE);
g_assert (info->style);
if (ELEMENT_IS ("piece"))
{
const char *position = NULL;
const char *draw_ops = NULL;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!position", &position,
"draw_ops", &draw_ops,
NULL))
return;
info->piece = meta_frame_piece_from_string (position);
if (info->piece == META_FRAME_PIECE_LAST)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Unknown position \"%s\" for frame piece"),
position);
return;
}
if (info->style->pieces[info->piece] != NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Frame style already has a piece at position %s"),
position);
return;
}
g_assert (info->op_list == NULL);
if (draw_ops)
{
MetaDrawOpList *op_list;
op_list = meta_theme_lookup_draw_op_list (info->theme,
draw_ops);
if (op_list == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("No <draw_ops> with the name \"%s\" has been defined"),
draw_ops);
return;
}
meta_draw_op_list_ref (op_list);
info->op_list = op_list;
}
push_state (info, STATE_PIECE);
}
else if (ELEMENT_IS ("button"))
{
const char *function = NULL;
const char *state = NULL;
const char *draw_ops = NULL;
gint required_version;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!function", &function,
"!state", &state,
"draw_ops", &draw_ops,
NULL))
return;
info->button_type = meta_button_type_from_string (function, info->theme);
if (info->button_type == META_BUTTON_TYPE_LAST)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Unknown function \"%s\" for button"),
function);
return;
}
required_version = peek_required_version (info);
if (meta_theme_earliest_version_with_button (info->button_type) >
(guint)required_version)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Button function \"%s\" does not exist in this version (%d, need %d)"),
function,
required_version,
meta_theme_earliest_version_with_button (info->button_type)
);
return;
}
info->button_state = meta_button_state_from_string (state);
if (info->button_state == META_BUTTON_STATE_LAST)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Unknown state \"%s\" for button"),
state);
return;
}
if (info->style->buttons[info->button_type][info->button_state] != NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Frame style already has a button for function %s state %s"),
function, state);
return;
}
g_assert (info->op_list == NULL);
if (draw_ops)
{
MetaDrawOpList *op_list;
op_list = meta_theme_lookup_draw_op_list (info->theme,
draw_ops);
if (op_list == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("No <draw_ops> with the name \"%s\" has been defined"),
draw_ops);
return;
}
meta_draw_op_list_ref (op_list);
info->op_list = op_list;
}
push_state (info, STATE_BUTTON);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "frame_style");
}
}
static void
parse_style_set_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_FRAME_STYLE_SET);
if (ELEMENT_IS ("frame"))
{
const char *focus = NULL;
const char *state = NULL;
const char *resize = NULL;
const char *style = NULL;
MetaFrameFocus frame_focus;
MetaFrameState frame_state;
MetaFrameResize frame_resize;
MetaFrameStyle *frame_style;
if (!locate_attributes (context, element_name, attribute_names, attribute_values,
error,
"!focus", &focus,
"!state", &state,
"resize", &resize,
"!style", &style,
NULL))
return;
frame_focus = meta_frame_focus_from_string (focus);
if (frame_focus == META_FRAME_FOCUS_LAST)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("\"%s\" is not a valid value for focus attribute"),
focus);
return;
}
frame_state = meta_frame_state_from_string (state);
if (frame_state == META_FRAME_STATE_LAST)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("\"%s\" is not a valid value for state attribute"),
focus);
return;
}
frame_style = meta_theme_lookup_style (info->theme, style);
if (frame_style == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("A style called \"%s\" has not been defined"),
style);
return;
}
switch (frame_state)
{
case META_FRAME_STATE_NORMAL:
if (resize == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
ATTRIBUTE_NOT_FOUND,
"resize", element_name);
return;
}
frame_resize = meta_frame_resize_from_string (resize);
if (frame_resize == META_FRAME_RESIZE_LAST)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("\"%s\" is not a valid value for resize attribute"),
focus);
return;
}
break;
case META_FRAME_STATE_SHADED:
if (META_THEME_ALLOWS (info->theme, META_THEME_UNRESIZABLE_SHADED_STYLES))
{
if (resize == NULL)
/* In state="normal" we would complain here. But instead we accept
* not having a resize attribute and default to resize="both", since
* that most closely mimics what we did in v1, and thus people can
* upgrade a theme to v2 without as much hassle.
*/
frame_resize = META_FRAME_RESIZE_BOTH;
else
{
frame_resize = meta_frame_resize_from_string (resize);
if (frame_resize == META_FRAME_RESIZE_LAST)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("\"%s\" is not a valid value for resize attribute"),
focus);
return;
}
}
}
else /* v1 theme */
{
if (resize != NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Should not have \"resize\" attribute on <%s> element for maximized/shaded states"),
element_name);
return;
}
/* resize="both" is equivalent to the old behaviour */
frame_resize = META_FRAME_RESIZE_BOTH;
}
break;
default:
if (resize != NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Should not have \"resize\" attribute on <%s> element for maximized states"),
element_name);
return;
}
frame_resize = META_FRAME_RESIZE_LAST;
}
switch (frame_state)
{
case META_FRAME_STATE_NORMAL:
if (info->style_set->normal_styles[frame_resize][frame_focus])
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Style has already been specified for state %s resize %s focus %s"),
state, resize, focus);
return;
}
meta_frame_style_ref (frame_style);
info->style_set->normal_styles[frame_resize][frame_focus] = frame_style;
break;
case META_FRAME_STATE_MAXIMIZED:
if (info->style_set->maximized_styles[frame_focus])
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Style has already been specified for state %s focus %s"),
state, focus);
return;
}
meta_frame_style_ref (frame_style);
info->style_set->maximized_styles[frame_focus] = frame_style;
break;
case META_FRAME_STATE_TILED_LEFT:
if (info->style_set->tiled_left_styles[frame_focus])
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Style has already been specified for state %s focus %s"),
state, focus);
return;
}
meta_frame_style_ref (frame_style);
info->style_set->tiled_left_styles[frame_focus] = frame_style;
break;
case META_FRAME_STATE_TILED_RIGHT:
if (info->style_set->tiled_right_styles[frame_focus])
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Style has already been specified for state %s focus %s"),
state, focus);
return;
}
meta_frame_style_ref (frame_style);
info->style_set->tiled_right_styles[frame_focus] = frame_style;
break;
meta_frame_style_ref (frame_style);
info->style_set->tiled_right_styles[frame_focus] = frame_style;
break;
case META_FRAME_STATE_SHADED:
if (info->style_set->shaded_styles[frame_resize][frame_focus])
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Style has already been specified for state %s resize %s focus %s"),
state, resize, focus);
return;
}
meta_frame_style_ref (frame_style);
info->style_set->shaded_styles[frame_resize][frame_focus] = frame_style;
break;
case META_FRAME_STATE_MAXIMIZED_AND_SHADED:
if (info->style_set->maximized_and_shaded_styles[frame_focus])
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Style has already been specified for state %s focus %s"),
state, focus);
return;
}
meta_frame_style_ref (frame_style);
info->style_set->maximized_and_shaded_styles[frame_focus] = frame_style;
break;
case META_FRAME_STATE_TILED_LEFT_AND_SHADED:
if (info->style_set->tiled_left_and_shaded_styles[frame_focus])
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Style has already been specified for state %s focus %s"),
state, focus);
return;
}
meta_frame_style_ref (frame_style);
info->style_set->tiled_left_and_shaded_styles[frame_focus] = frame_style;
break;
case META_FRAME_STATE_TILED_RIGHT_AND_SHADED:
if (info->style_set->tiled_right_and_shaded_styles[frame_focus])
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Style has already been specified for state %s focus %s"),
state, focus);
return;
}
meta_frame_style_ref (frame_style);
info->style_set->tiled_right_and_shaded_styles[frame_focus] = frame_style;
break;
case META_FRAME_STATE_LAST:
g_assert_not_reached ();
break;
}
push_state (info, STATE_FRAME);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "frame_style_set");
}
}
static void
parse_piece_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_PIECE);
if (ELEMENT_IS ("draw_ops"))
{
if (info->op_list)
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Can't have a two draw_ops for a <piece> element (theme specified a draw_ops attribute and also a <draw_ops> element, or specified two elements)"));
return;
}
if (!check_no_attributes (context, element_name, attribute_names, attribute_values,
error))
return;
g_assert (info->op_list == NULL);
info->op_list = meta_draw_op_list_new (2);
push_state (info, STATE_DRAW_OPS);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "piece");
}
}
static void
parse_button_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_BUTTON);
if (ELEMENT_IS ("draw_ops"))
{
if (info->op_list)
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Can't have a two draw_ops for a <button> element (theme specified a draw_ops attribute and also a <draw_ops> element, or specified two elements)"));
return;
}
if (!check_no_attributes (context, element_name, attribute_names, attribute_values,
error))
return;
g_assert (info->op_list == NULL);
info->op_list = meta_draw_op_list_new (2);
push_state (info, STATE_DRAW_OPS);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "button");
}
}
static void
parse_menu_icon_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
ParseInfo *info,
GError **error)
{
g_return_if_fail (peek_state (info) == STATE_MENU_ICON);
if (ELEMENT_IS ("draw_ops"))
{
if (info->op_list)
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Can't have a two draw_ops for a <menu_icon> element (theme specified a draw_ops attribute and also a <draw_ops> element, or specified two elements)"));
return;
}
if (!check_no_attributes (context, element_name, attribute_names, attribute_values,
error))
return;
g_assert (info->op_list == NULL);
info->op_list = meta_draw_op_list_new (2);
push_state (info, STATE_DRAW_OPS);
}
else
{
set_error (error, context,
G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed below <%s>"),
element_name, "menu_icon");
}
}
static const char *
find_version (const char **attribute_names,
const char **attribute_values)
{
int i;
for (i = 0; attribute_names[i]; i++)
{
if (strcmp (attribute_names[i], "version") == 0)
return attribute_values[i];
}
return NULL;
}
/* Returns whether the version element was successfully parsed.
* If successfully parsed, then two additional items are returned:
*
* satisfied: whether this version of Mutter meets the version check
* minimum_required: minimum version of theme format required by version check
*/
static gboolean
check_version (GMarkupParseContext *context,
const char *version_str,
gboolean *satisfied,
guint *minimum_required,
GError **error)
{
static GRegex *version_regex;
GMatchInfo *info;
char *comparison_str, *major_str, *minor_str;
guint version;
*minimum_required = 0;
if (!version_regex)
version_regex = g_regex_new ("^\\s*([<>]=?)\\s*(\\d+)(\\.\\d+)?\\s*$", 0, 0, NULL);
if (!g_regex_match (version_regex, version_str, 0, &info))
{
g_match_info_free (info);
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Bad version specification '%s'"), version_str);
return FALSE;
}
comparison_str = g_match_info_fetch (info, 1);
major_str = g_match_info_fetch (info, 2);
minor_str = g_match_info_fetch (info, 3);
version = 1000 * atoi (major_str);
/* might get NULL, see: https://bugzilla.gnome.org/review?bug=588217 */
if (minor_str && minor_str[0])
version += atoi (minor_str + 1);
if (comparison_str[0] == '<')
{
if (comparison_str[1] == '=')
*satisfied = THEME_VERSION <= version;
else
{
*satisfied = THEME_VERSION < version;
}
}
else
{
if (comparison_str[1] == '=')
{
*satisfied = THEME_VERSION >= version;
*minimum_required = version;
}
else
{
*satisfied = THEME_VERSION > version;
*minimum_required = version + 1;
}
}
g_free (comparison_str);
g_free (major_str);
g_free (minor_str);
g_match_info_free (info);
return TRUE;
}
static void
start_element_handler (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
gpointer user_data,
GError **error)
{
ParseInfo *info = user_data;
const char *version;
guint required_version = 0;
if (info->skip_level > 0)
{
info->skip_level++;
return;
}
required_version = peek_required_version (info);
version = find_version (attribute_names, attribute_values);
if (version != NULL)
{
gboolean satisfied;
guint element_required;
if (required_version < 3000)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("\"version\" attribute cannot be used in metacity-theme-1.xml or metacity-theme-2.xml"));
return;
}
if (!check_version (context, version, &satisfied, &element_required, error))
return;
/* Two different ways of handling an unsatisfied version check:
* for the toplevel element of a file, we throw an error back so
* that the controlling code can go ahead and look for an
* alternate metacity-theme-1.xml or metacity-theme-2.xml; for
* other elements we just silently skip the element and children.
*/
if (peek_state (info) == STATE_START)
{
if (satisfied)
{
if (element_required > info->format_version)
info->format_version = element_required;
}
else
{
set_error (error, context, THEME_PARSE_ERROR, THEME_PARSE_ERROR_TOO_OLD,
_("Theme requires version %s but latest supported theme version is %d.%d"),
version, THEME_VERSION, THEME_MINOR_VERSION);
return;
}
}
else if (!satisfied)
{
info->skip_level = 1;
return;
}
if (element_required > required_version)
required_version = element_required;
}
push_required_version (info, required_version);
switch (peek_state (info))
{
case STATE_START:
if (strcmp (element_name, "metacity_theme") == 0)
{
info->theme = meta_theme_new ();
info->theme->name = g_strdup (info->theme_name);
info->theme->filename = g_strdup (info->theme_file);
info->theme->dirname = g_strdup (info->theme_dir);
info->theme->format_version = info->format_version;
push_state (info, STATE_THEME);
}
else
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Outermost element in theme must be <metacity_theme> not <%s>"),
element_name);
break;
case STATE_THEME:
parse_toplevel_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_INFO:
parse_info_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_NAME:
case STATE_AUTHOR:
case STATE_COPYRIGHT:
case STATE_DATE:
case STATE_DESCRIPTION:
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed inside a name/author/date/description element"),
element_name);
break;
case STATE_CONSTANT:
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed inside a <constant> element"),
element_name);
break;
case STATE_FRAME_GEOMETRY:
parse_geometry_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_DISTANCE:
case STATE_BORDER:
case STATE_ASPECT_RATIO:
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed inside a distance/border/aspect_ratio element"),
element_name);
break;
case STATE_DRAW_OPS:
parse_draw_op_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_LINE:
case STATE_RECTANGLE:
case STATE_ARC:
case STATE_CLIP:
case STATE_TINT:
case STATE_IMAGE:
case STATE_GTK_ARROW:
case STATE_GTK_BOX:
case STATE_GTK_VLINE:
case STATE_ICON:
case STATE_TITLE:
case STATE_INCLUDE:
case STATE_TILE:
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed inside a draw operation element"),
element_name);
break;
case STATE_GRADIENT:
parse_gradient_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_COLOR:
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed inside a <%s> element"),
element_name, "color");
break;
case STATE_FRAME_STYLE:
parse_style_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_PIECE:
parse_piece_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_BUTTON:
parse_button_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_MENU_ICON:
parse_menu_icon_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_FRAME_STYLE_SET:
parse_style_set_element (context, element_name,
attribute_names, attribute_values,
info, error);
break;
case STATE_FRAME:
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed inside a <%s> element"),
element_name, "frame");
break;
case STATE_WINDOW:
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed inside a <%s> element"),
element_name, "window");
break;
case STATE_FALLBACK:
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("Element <%s> is not allowed inside a <%s> element"),
element_name, "fallback");
break;
}
}
static void
end_element_handler (GMarkupParseContext *context,
const gchar *element_name,
gpointer user_data,
GError **error)
{
ParseInfo *info = user_data;
if (info->skip_level > 0)
{
info->skip_level--;
return;
}
switch (peek_state (info))
{
case STATE_START:
break;
case STATE_THEME:
g_assert (info->theme);
if (!meta_theme_validate (info->theme, error))
{
add_context_to_error (error, context);
meta_theme_free (info->theme);
info->theme = NULL;
}
pop_state (info);
g_assert (peek_state (info) == STATE_START);
break;
case STATE_INFO:
pop_state (info);
g_assert (peek_state (info) == STATE_THEME);
break;
case STATE_NAME:
pop_state (info);
g_assert (peek_state (info) == STATE_INFO);
break;
case STATE_AUTHOR:
pop_state (info);
g_assert (peek_state (info) == STATE_INFO);
break;
case STATE_COPYRIGHT:
pop_state (info);
g_assert (peek_state (info) == STATE_INFO);
break;
case STATE_DATE:
pop_state (info);
g_assert (peek_state (info) == STATE_INFO);
break;
case STATE_DESCRIPTION:
pop_state (info);
g_assert (peek_state (info) == STATE_INFO);
break;
case STATE_CONSTANT:
pop_state (info);
g_assert (peek_state (info) == STATE_THEME);
break;
case STATE_FRAME_GEOMETRY:
g_assert (info->layout);
if (!meta_frame_layout_validate (info->layout,
error))
{
add_context_to_error (error, context);
}
/* layout will already be stored in the theme under
* its name
*/
meta_frame_layout_unref (info->layout);
info->layout = NULL;
pop_state (info);
g_assert (peek_state (info) == STATE_THEME);
break;
case STATE_DISTANCE:
pop_state (info);
g_assert (peek_state (info) == STATE_FRAME_GEOMETRY);
break;
case STATE_BORDER:
pop_state (info);
g_assert (peek_state (info) == STATE_FRAME_GEOMETRY);
break;
case STATE_ASPECT_RATIO:
pop_state (info);
g_assert (peek_state (info) == STATE_FRAME_GEOMETRY);
break;
case STATE_DRAW_OPS:
{
g_assert (info->op_list);
if (!meta_draw_op_list_validate (info->op_list,
error))
{
add_context_to_error (error, context);
meta_draw_op_list_unref (info->op_list);
info->op_list = NULL;
}
pop_state (info);
switch (peek_state (info))
{
case STATE_BUTTON:
case STATE_PIECE:
case STATE_MENU_ICON:
/* Leave info->op_list to be picked up
* when these elements are closed
*/
g_assert (info->op_list);
break;
case STATE_THEME:
g_assert (info->op_list);
meta_draw_op_list_unref (info->op_list);
info->op_list = NULL;
break;
default:
/* Op list can't occur in other contexts */
g_assert_not_reached ();
break;
}
}
break;
case STATE_LINE:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_RECTANGLE:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_ARC:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_CLIP:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_TINT:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_GRADIENT:
g_assert (info->op);
g_assert (info->op->type == META_DRAW_GRADIENT);
if (!meta_gradient_spec_validate (info->op->data.gradient.gradient_spec,
error))
{
add_context_to_error (error, context);
meta_draw_op_free (info->op);
info->op = NULL;
}
else
{
g_assert (info->op_list);
meta_draw_op_list_append (info->op_list, info->op);
info->op = NULL;
}
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_IMAGE:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_GTK_ARROW:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_GTK_BOX:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_GTK_VLINE:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_ICON:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_TITLE:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_INCLUDE:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_TILE:
pop_state (info);
g_assert (peek_state (info) == STATE_DRAW_OPS);
break;
case STATE_COLOR:
pop_state (info);
g_assert (peek_state (info) == STATE_GRADIENT);
break;
case STATE_FRAME_STYLE:
g_assert (info->style);
if (!meta_frame_style_validate (info->style,
peek_required_version (info),
error))
{
add_context_to_error (error, context);
}
/* Frame style is in the theme hash table and a ref
* is held there
*/
meta_frame_style_unref (info->style);
info->style = NULL;
pop_state (info);
g_assert (peek_state (info) == STATE_THEME);
break;
case STATE_PIECE:
g_assert (info->style);
if (info->op_list == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("No draw_ops provided for frame piece"));
}
else
{
info->style->pieces[info->piece] = info->op_list;
info->op_list = NULL;
}
pop_state (info);
g_assert (peek_state (info) == STATE_FRAME_STYLE);
break;
case STATE_BUTTON:
g_assert (info->style);
if (info->op_list == NULL)
{
set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE,
_("No draw_ops provided for button"));
}
else
{
info->style->buttons[info->button_type][info->button_state] =
info->op_list;
info->op_list = NULL;
}
pop_state (info);
break;
case STATE_MENU_ICON:
g_assert (info->theme);
if (info->op_list != NULL)
{
meta_draw_op_list_unref (info->op_list);
info->op_list = NULL;
}
pop_state (info);
g_assert (peek_state (info) == STATE_THEME);
break;
case STATE_FRAME_STYLE_SET:
g_assert (info->style_set);
if (!meta_frame_style_set_validate (info->style_set,
error))
{
add_context_to_error (error, context);
}
/* Style set is in the theme hash table and a reference
* is held there.
*/
meta_frame_style_set_unref (info->style_set);
info->style_set = NULL;
pop_state (info);
g_assert (peek_state (info) == STATE_THEME);
break;
case STATE_FRAME:
pop_state (info);
g_assert (peek_state (info) == STATE_FRAME_STYLE_SET);
break;
case STATE_WINDOW:
pop_state (info);
g_assert (peek_state (info) == STATE_THEME);
break;
case STATE_FALLBACK:
pop_state (info);
g_assert (peek_state (info) == STATE_THEME);
break;
}
pop_required_version (info);
}
#define NO_TEXT(element_name) set_error (error, context, G_MARKUP_ERROR, G_MARKUP_ERROR_PARSE, _("No text is allowed inside element <%s>"), element_name)
static gboolean
all_whitespace (const char *text,
int text_len)
{
const char *p;
const char *end;
p = text;
end = text + text_len;
while (p != end)
{
if (!g_ascii_isspace (*p))
return FALSE;
p = g_utf8_next_char (p);
}
return TRUE;
}
static void
text_handler (GMarkupParseContext *context,
const gchar *text,
gsize text_len,
gpointer user_data,
GError **error)
{
ParseInfo *info = user_data;
if (info->skip_level > 0)
return;
if (all_whitespace (text, text_len))
return;
/* FIXME http://bugzilla.gnome.org/show_bug.cgi?id=70448 would
* allow a nice cleanup here.
*/
switch (peek_state (info))
{
case STATE_START:
g_assert_not_reached (); /* gmarkup shouldn't do this */
break;
case STATE_THEME:
NO_TEXT ("metacity_theme");
break;
case STATE_INFO:
NO_TEXT ("info");
break;
case STATE_NAME:
if (info->theme->readable_name != NULL)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("<%s> specified twice for this theme"),
"name");
return;
}
info->theme->readable_name = g_strndup (text, text_len);
break;
case STATE_AUTHOR:
if (info->theme->author != NULL)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("<%s> specified twice for this theme"),
"author");
return;
}
info->theme->author = g_strndup (text, text_len);
break;
case STATE_COPYRIGHT:
if (info->theme->copyright != NULL)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("<%s> specified twice for this theme"),
"copyright");
return;
}
info->theme->copyright = g_strndup (text, text_len);
break;
case STATE_DATE:
if (info->theme->date != NULL)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("<%s> specified twice for this theme"),
"date");
return;
}
info->theme->date = g_strndup (text, text_len);
break;
case STATE_DESCRIPTION:
if (info->theme->description != NULL)
{
set_error (error, context, G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
_("<%s> specified twice for this theme"),
"description");
return;
}
info->theme->description = g_strndup (text, text_len);
break;
case STATE_CONSTANT:
NO_TEXT ("constant");
break;
case STATE_FRAME_GEOMETRY:
NO_TEXT ("frame_geometry");
break;
case STATE_DISTANCE:
NO_TEXT ("distance");
break;
case STATE_BORDER:
NO_TEXT ("border");
break;
case STATE_ASPECT_RATIO:
NO_TEXT ("aspect_ratio");
break;
case STATE_DRAW_OPS:
NO_TEXT ("draw_ops");
break;
case STATE_LINE:
NO_TEXT ("line");
break;
case STATE_RECTANGLE:
NO_TEXT ("rectangle");
break;
case STATE_ARC:
NO_TEXT ("arc");
break;
case STATE_CLIP:
NO_TEXT ("clip");
break;
case STATE_TINT:
NO_TEXT ("tint");
break;
case STATE_GRADIENT:
NO_TEXT ("gradient");
break;
case STATE_IMAGE:
NO_TEXT ("image");
break;
case STATE_GTK_ARROW:
NO_TEXT ("gtk_arrow");
break;
case STATE_GTK_BOX:
NO_TEXT ("gtk_box");
break;
case STATE_GTK_VLINE:
NO_TEXT ("gtk_vline");
break;
case STATE_ICON:
NO_TEXT ("icon");
break;
case STATE_TITLE:
NO_TEXT ("title");
break;
case STATE_INCLUDE:
NO_TEXT ("include");
break;
case STATE_TILE:
NO_TEXT ("tile");
break;
case STATE_COLOR:
NO_TEXT ("color");
break;
case STATE_FRAME_STYLE:
NO_TEXT ("frame_style");
break;
case STATE_PIECE:
NO_TEXT ("piece");
break;
case STATE_BUTTON:
NO_TEXT ("button");
break;
case STATE_MENU_ICON:
NO_TEXT ("menu_icon");
break;
case STATE_FRAME_STYLE_SET:
NO_TEXT ("frame_style_set");
break;
case STATE_FRAME:
NO_TEXT ("frame");
break;
case STATE_WINDOW:
NO_TEXT ("window");
break;
case STATE_FALLBACK:
NO_TEXT ("fallback");
break;
}
}
/* If the theme is not-corrupt, keep looking for alternate versions
* in other locations we might be compatible with
*/
static gboolean
theme_error_is_fatal (GError *error)
{
return !(error->domain == G_FILE_ERROR ||
(error->domain == THEME_PARSE_ERROR &&
error->code == THEME_PARSE_ERROR_TOO_OLD));
}
static MetaTheme *
load_theme (const char *theme_dir,
const char *theme_name,
guint major_version,
GError **error)
{
GMarkupParseContext *context;
ParseInfo info;
char *text;
gsize length;
char *theme_filename;
char *theme_file;
MetaTheme *retval;
g_return_val_if_fail (error && *error == NULL, NULL);
text = NULL;
retval = NULL;
context = NULL;
theme_filename = g_strdup_printf (METACITY_THEME_FILENAME_FORMAT, major_version);
theme_file = g_build_filename (theme_dir, theme_filename, NULL);
if (!g_file_get_contents (theme_file,
&text,
&length,
error))
goto out;
meta_topic (META_DEBUG_THEMES, "Parsing theme file %s\n", theme_file);
parse_info_init (&info);
info.theme_name = theme_name;
info.theme_file = theme_file;
info.theme_dir = theme_dir;
info.format_version = 1000 * major_version;
context = g_markup_parse_context_new (&metacity_theme_parser,
0, &info, NULL);
if (!g_markup_parse_context_parse (context,
text,
length,
error))
goto out;
if (!g_markup_parse_context_end_parse (context, error))
goto out;
retval = info.theme;
info.theme = NULL;
out:
if (*error && !theme_error_is_fatal (*error))
{
meta_topic (META_DEBUG_THEMES, "Failed to read theme from file %s: %s\n",
theme_file, (*error)->message);
}
g_free (theme_filename);
g_free (theme_file);
g_free (text);
if (context)
{
g_markup_parse_context_free (context);
parse_info_free (&info);
}
return retval;
}
static gboolean
keep_trying (GError **error)
{
if (*error && !theme_error_is_fatal (*error))
{
g_clear_error (error);
return TRUE;
}
return FALSE;
}
/**
* meta_theme_load: (skip)
*
*/
MetaTheme*
meta_theme_load (const char *theme_name,
GError **err)
{
GError *error = NULL;
char *theme_dir;
MetaTheme *retval;
const gchar* const* xdg_data_dirs;
int major_version;
int i;
retval = NULL;
if (meta_is_debugging ())
{
/* Try in themes in our source tree */
/* We try all supported major versions from current to oldest */
for (major_version = THEME_MAJOR_VERSION; (major_version > 0); major_version--)
{
theme_dir = g_build_filename ("./themes", theme_name, NULL);
retval = load_theme (theme_dir, theme_name, major_version, &error);
g_free (theme_dir);
if (!keep_trying (&error))
goto out;
}
}
/* We try all supported major versions from current to oldest */
for (major_version = THEME_MAJOR_VERSION; (major_version > 0); major_version--)
{
/* We try first in home dir, XDG_DATA_DIRS, then system dir for themes */
/* Try home dir for themes */
theme_dir = g_build_filename (g_get_home_dir (),
".themes",
theme_name,
THEME_SUBDIR,
NULL);
retval = load_theme (theme_dir, theme_name, major_version, &error);
g_free (theme_dir);
if (!keep_trying (&error))
goto out;
/* Try each XDG_DATA_DIRS for theme */
xdg_data_dirs = g_get_system_data_dirs();
for(i = 0; xdg_data_dirs[i] != NULL; i++)
{
theme_dir = g_build_filename (xdg_data_dirs[i],
"themes",
theme_name,
THEME_SUBDIR,
NULL);
retval = load_theme (theme_dir, theme_name, major_version, &error);
g_free (theme_dir);
if (!keep_trying (&error))
goto out;
}
/* Look for themes in MUTTER_DATADIR */
theme_dir = g_build_filename (MUTTER_DATADIR,
"themes",
theme_name,
THEME_SUBDIR,
NULL);
retval = load_theme (theme_dir, theme_name, major_version, &error);
g_free (theme_dir);
if (!keep_trying (&error))
goto out;
}
out:
if (!error && !retval)
g_set_error (&error, META_THEME_ERROR, META_THEME_ERROR_FAILED,
_("Failed to find a valid file for theme %s\n"),
theme_name);
if (error)
{
g_propagate_error (err, error);
}
return retval;
}
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