1 /* Fo
2 * fo-property-padding.c: 'padding' property
3 *
4 * Copyright (C) 2001 Sun Microsystems
5 * Copyright (C) 2007 Menteith Consulting Ltd
6 *
7 * See COPYING for the status of this software.
8 */
9
10 #include <string.h>
11 #include "fo-utils.h"
12 #include "fo-context.h"
13 #include "datatype/fo-datatype.h"
14 #include "property/fo-property-private.h"
15 #include "property/fo-property-font-size.h"
16 #include "property/fo-property-padding.h"
17 #include "property/fo-property-util.h"
18
19 /* padding */
20 /* Inherited: FALSE */
21 /* Shorthand: TRUE */
22 /* <padding-width>{1,4} | inherit */
23 /* Initial value: not defined for shorthand properties */
24
25 struct _FoPropertyPadding
26 {
27 FoProperty parent_instance;
28 };
29
30 struct _FoPropertyPaddingClass
31 {
32 FoPropertyClass parent_class;
33 };
34
35 static void fo_property_padding_init (FoPropertyPadding *property_padding);
36 static void fo_property_padding_class_init (FoPropertyPaddingClass *klass);
37 static void fo_property_padding_finalize (GObject *object);
38
39 static FoDatatype* fo_property_padding_validate (FoDatatype *datatype,
40 FoContext *context,
41 GError **error);
42
43 static const gchar class_name[] = "padding";
44 static gpointer parent_class;
45
46 /**
47 * fo_property_padding_get_type:
48 *
49 * Register the #FoPropertyPadding type if not already registered and
50 * return its #GType value.
51 *
52 * Return value: #GType of #FoPropertyPadding.
53 **/
54 GType
fo_property_padding_get_type(void)55 fo_property_padding_get_type (void)
56 {
57 static GType object_type = 0;
58
59 if (!object_type)
60 {
61 static const GTypeInfo object_info =
62 {
63 sizeof (FoPropertyPaddingClass),
64 NULL, /* base_init */
65 NULL, /* base_finalize */
66 (GClassInitFunc) fo_property_padding_class_init,
67 NULL, /* class_finalize */
68 NULL, /* class_data */
69 sizeof (FoPropertyPadding),
70 0, /* n_preallocs */
71 (GInstanceInitFunc) fo_property_padding_init,
72 NULL /* value_table */
73 };
74
75 object_type = g_type_register_static (FO_TYPE_PROPERTY,
76 class_name,
77 &object_info, 0);
78 }
79
80 return object_type;
81 }
82
83 /**
84 * fo_property_padding_init:
85 * @padding: #FoPropertyPadding object to initialise.
86 *
87 * Implements #GInstanceInitFunc for #FoPropertyPadding.
88 **/
89 void
fo_property_padding_init(FoPropertyPadding * padding)90 fo_property_padding_init (FoPropertyPadding *padding)
91 {
92 FO_PROPERTY (padding)->value =
93 NULL;
94 }
95
96 /**
97 * fo_property_padding_class_init:
98 * @klass: #FoPropertyPaddingClass object to initialise.
99 *
100 * Implements #GClassInitFunc for #FoPropertyPaddingClass.
101 **/
102 void
fo_property_padding_class_init(FoPropertyPaddingClass * klass)103 fo_property_padding_class_init (FoPropertyPaddingClass *klass)
104 {
105 GObjectClass *object_class = G_OBJECT_CLASS (klass);
106 FoPropertyClass *property_class = FO_PROPERTY_CLASS (klass);
107
108 parent_class = g_type_class_peek_parent (klass);
109
110 object_class->finalize = fo_property_padding_finalize;
111
112 property_class->expr_eval = fo_expr_padding_eval;
113 property_class->is_inherited = FALSE;
114 property_class->is_shorthand = TRUE;
115 property_class->resolve_enum =
116 fo_property_util_resolve_no_enum;
117 property_class->resolve_percent =
118 fo_property_util_resolve_ipdim_percent;
119 property_class->validate =
120 fo_property_padding_validate;
121 property_class->get_initial =
122 fo_property_padding_get_initial;
123 }
124
125 /**
126 * fo_property_padding_finalize:
127 * @object: #FoPropertyPadding object to finalize.
128 *
129 * Implements #GObjectFinalizeFunc for #FoPropertyPadding.
130 **/
131 void
fo_property_padding_finalize(GObject * object)132 fo_property_padding_finalize (GObject *object)
133 {
134 FoPropertyPadding *padding;
135
136 padding = FO_PROPERTY_PADDING (object);
137
138 G_OBJECT_CLASS (parent_class)->finalize (object);
139 }
140
141
142 /**
143 * fo_property_padding_new:
144 *
145 * Creates a new #FoPropertyPadding initialized to default value.
146 *
147 * Return value: the new #FoPropertyPadding.
148 **/
149 FoProperty*
fo_property_padding_new(void)150 fo_property_padding_new (void)
151 {
152 FoProperty* padding;
153
154 padding =
155 FO_PROPERTY (g_object_new (fo_property_padding_get_type (),
156 NULL));
157
158 return padding;
159 }
160
161 /**
162 * fo_property_padding_validate:
163 * @datatype: #FoDatatype to be validated against allowed datatypes and
164 * values for current property.
165 * @context: #FoContext object from which to possibly inherit values.
166 * @error: Information about any error that has occurred.
167 *
168 * Validates @datatype against allowed values. Returns @datatype, a
169 * replacement datatype value, or NULL if validation failed.
170 *
171 * Return value: Valid datatype value or NULL.
172 **/
173 FoDatatype*
fo_property_padding_validate(FoDatatype * datatype,FoContext * context,GError ** error)174 fo_property_padding_validate (FoDatatype *datatype,
175 FoContext *context,
176 GError **error)
177 {
178 g_return_val_if_fail (datatype != NULL, NULL);
179 g_return_val_if_fail (FO_IS_DATATYPE (datatype), NULL);
180 g_return_val_if_fail (context != NULL, NULL);
181 g_return_val_if_fail (FO_IS_CONTEXT (context), NULL);
182 g_return_val_if_fail (error == NULL || *error == NULL, NULL);
183
184 if (FO_IS_TBLR (datatype))
185 {
186 return datatype;
187 }
188 else
189 {
190 gchar *datatype_sprintf = fo_object_sprintf (datatype);
191
192 g_set_error (error,
193 FO_FO_ERROR,
194 FO_FO_ERROR_DATATYPE,
195 _(fo_fo_error_messages[FO_FO_ERROR_DATATYPE]),
196 class_name,
197 datatype_sprintf,
198 g_type_name (G_TYPE_FROM_INSTANCE (datatype)));
199
200 g_object_unref (datatype);
201
202 g_free (datatype_sprintf);
203
204 return NULL;
205 }
206 }
207
208 /**
209 * fo_property_padding_get_initial:
210 *
211 * Get an instance of the property with the correct initial value.
212 *
213 * Return value: An instance of the property.
214 **/
215 FoProperty*
fo_property_padding_get_initial(void)216 fo_property_padding_get_initial (void)
217 {
218 static FoProperty *padding = NULL;
219
220 if (padding == NULL)
221 {
222 padding =
223 fo_property_padding_new ();
224 }
225
226 return padding;
227 }
228