1 #define __SP_STRING_C__
3 /*
4 * SVG <text> and <tspan> implementation
5 *
6 * Author:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 *
9 * Copyright (C) 1999-2002 Lauris Kaplinski
10 * Copyright (C) 2000-2001 Ximian, Inc.
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 /*
16 * fixme:
17 *
18 * These subcomponents should not be items, or alternately
19 * we have to invent set of flags to mark, whether standard
20 * attributes are applicable to given item (I even like this
21 * idea somewhat - Lauris)
22 *
23 */
27 #ifdef HAVE_CONFIG_H
28 # include "config.h"
29 #endif
32 #include "sp-string.h"
33 #include "xml/repr.h"
36 /*#####################################################
37 # SPSTRING
38 #####################################################*/
40 static void sp_string_class_init(SPStringClass *classname);
41 static void sp_string_init(SPString *string);
43 static void sp_string_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
44 static void sp_string_release(SPObject *object);
45 static void sp_string_read_content(SPObject *object);
46 static void sp_string_update(SPObject *object, SPCtx *ctx, unsigned flags);
48 static void sp_string_calculate_dimensions(SPString *string);
50 static SPObjectClass *string_parent_class;
52 GType
53 sp_string_get_type()
54 {
55 static GType type = 0;
56 if (!type) {
57 GTypeInfo info = {
58 sizeof(SPStringClass),
59 NULL, /* base_init */
60 NULL, /* base_finalize */
61 (GClassInitFunc) sp_string_class_init,
62 NULL, /* class_finalize */
63 NULL, /* class_data */
64 sizeof(SPString),
65 16, /* n_preallocs */
66 (GInstanceInitFunc) sp_string_init,
67 NULL, /* value_table */
68 };
69 type = g_type_register_static(SP_TYPE_OBJECT, "SPString", &info, (GTypeFlags)0);
70 }
71 return type;
72 }
74 static void
75 sp_string_class_init(SPStringClass *classname)
76 {
77 SPObjectClass *sp_object_class;
78 SPItemClass *item_class;
80 sp_object_class = (SPObjectClass *) classname;
81 item_class = (SPItemClass *) classname;
83 string_parent_class = (SPObjectClass*)g_type_class_ref(SP_TYPE_OBJECT);
85 sp_object_class->build = sp_string_build;
86 sp_object_class->release = sp_string_release;
87 sp_object_class->read_content = sp_string_read_content;
88 sp_object_class->update = sp_string_update;
89 }
91 static void
92 sp_string_init(SPString *string)
93 {
94 new (&string->string) Glib::ustring();
95 }
97 static void
98 sp_string_build(SPObject *object, SPDocument *doc, Inkscape::XML::Node *repr)
99 {
100 sp_string_read_content(object);
102 if (((SPObjectClass *) string_parent_class)->build)
103 ((SPObjectClass *) string_parent_class)->build(object, doc, repr);
104 }
106 static void
107 sp_string_release(SPObject *object)
108 {
109 SPString *string = SP_STRING(object);
111 string->string.~ustring();
113 if (((SPObjectClass *) string_parent_class)->release)
114 ((SPObjectClass *) string_parent_class)->release(object);
115 }
117 static void
118 sp_string_read_content(SPObject *object)
119 {
120 SPString *string = SP_STRING(object);
122 string->string.clear();
123 gchar const *xml_string = string->repr->content();
124 // see algorithms described in svg 1.1 section 10.15
125 if (object->xml_space.value == SP_XML_SPACE_PRESERVE) {
126 for ( ; *xml_string ; xml_string = g_utf8_next_char(xml_string) ) {
127 gunichar c = g_utf8_get_char(xml_string);
128 if (c == '\n' || c == '\t') c = ' ';
129 string->string += c;
130 }
131 }
132 else {
133 bool whitespace = false;
134 for ( ; *xml_string ; xml_string = g_utf8_next_char(xml_string) ) {
135 gunichar c = g_utf8_get_char(xml_string);
136 if (c == '\n') continue;
137 if (c == ' ' || c == '\t') whitespace = true;
138 else {
139 if (whitespace && (!string->string.empty() || SP_OBJECT_PREV(object) != NULL))
140 string->string += ' ';
141 string->string += c;
142 whitespace = false;
143 }
144 }
145 if (whitespace && SP_OBJECT_REPR(object)->next() != NULL) // can't use SP_OBJECT_NEXT() when the SPObject tree is still being built
146 string->string += ' ';
147 }
148 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
149 }
151 static void
152 sp_string_update(SPObject *object, SPCtx *ctx, unsigned flags)
153 {
154 if (((SPObjectClass *) string_parent_class)->update)
155 ((SPObjectClass *) string_parent_class)->update(object, ctx, flags);
157 if (flags & (SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_MODIFIED_FLAG)) {
158 /* Parent style or we ourselves changed, so recalculate */
159 flags &= ~SP_OBJECT_USER_MODIFIED_FLAG_B; // won't be "just a transformation" anymore, we're going to recompute "x" and "y" attributes
160 sp_string_calculate_dimensions(SP_STRING(object));
161 }
162 }
164 static void
165 sp_string_calculate_dimensions(SPString *)
166 {
167 }
169 /*
170 Local Variables:
171 mode:c++
172 c-file-style:"stroustrup"
173 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
174 indent-tabs-mode:nil
175 fill-column:99
176 End:
177 */
178 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :