1 #define __SP_FEMORPHOLOGY_CPP__
3 /** \file
4 * SVG <feMorphology> implementation.
5 *
6 */
7 /*
8 * Authors:
9 * Felipe Sanches <felipe.sanches@gmail.com>
10 * Hugo Rodrigues <haa.rodrigues@gmail.com>
11 *
12 * Copyright (C) 2006 Hugo Rodrigues
13 *
14 * Released under GNU GPL, read the file 'COPYING' for more information
15 */
17 #ifdef HAVE_CONFIG_H
18 # include "config.h"
19 #endif
21 #include "attributes.h"
22 #include "svg/svg.h"
23 #include "sp-femorphology.h"
24 #include "xml/repr.h"
25 #include "display/nr-filter-morphology.h"
27 /* FeMorphology base class */
29 static void sp_feMorphology_class_init(SPFeMorphologyClass *klass);
30 static void sp_feMorphology_init(SPFeMorphology *feMorphology);
32 static void sp_feMorphology_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
33 static void sp_feMorphology_release(SPObject *object);
34 static void sp_feMorphology_set(SPObject *object, unsigned int key, gchar const *value);
35 static void sp_feMorphology_update(SPObject *object, SPCtx *ctx, guint flags);
36 static Inkscape::XML::Node *sp_feMorphology_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
37 static void sp_feMorphology_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
39 static SPFilterPrimitiveClass *feMorphology_parent_class;
41 GType
42 sp_feMorphology_get_type()
43 {
44 static GType feMorphology_type = 0;
46 if (!feMorphology_type) {
47 GTypeInfo feMorphology_info = {
48 sizeof(SPFeMorphologyClass),
49 NULL, NULL,
50 (GClassInitFunc) sp_feMorphology_class_init,
51 NULL, NULL,
52 sizeof(SPFeMorphology),
53 16,
54 (GInstanceInitFunc) sp_feMorphology_init,
55 NULL, /* value_table */
56 };
57 feMorphology_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeMorphology", &feMorphology_info, (GTypeFlags)0);
58 }
59 return feMorphology_type;
60 }
62 static void
63 sp_feMorphology_class_init(SPFeMorphologyClass *klass)
64 {
65 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
66 SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
68 feMorphology_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
70 sp_object_class->build = sp_feMorphology_build;
71 sp_object_class->release = sp_feMorphology_release;
72 sp_object_class->write = sp_feMorphology_write;
73 sp_object_class->set = sp_feMorphology_set;
74 sp_object_class->update = sp_feMorphology_update;
75 sp_primitive_class->build_renderer = sp_feMorphology_build_renderer;
76 }
78 static void
79 sp_feMorphology_init(SPFeMorphology *feMorphology)
80 {
81 //Setting default values:
82 feMorphology->radius.set("0");
83 }
85 /**
86 * Reads the Inkscape::XML::Node, and initializes SPFeMorphology variables. For this to get called,
87 * our name must be associated with a repr via "sp_object_type_register". Best done through
88 * sp-object-repr.cpp's repr_name_entries array.
89 */
90 static void
91 sp_feMorphology_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
92 {
93 if (((SPObjectClass *) feMorphology_parent_class)->build) {
94 ((SPObjectClass *) feMorphology_parent_class)->build(object, document, repr);
95 }
97 /*LOAD ATTRIBUTES FROM REPR HERE*/
98 sp_object_read_attr(object, "operator");
99 sp_object_read_attr(object, "radius");
100 }
102 /**
103 * Drops any allocated memory.
104 */
105 static void
106 sp_feMorphology_release(SPObject *object)
107 {
108 if (((SPObjectClass *) feMorphology_parent_class)->release)
109 ((SPObjectClass *) feMorphology_parent_class)->release(object);
110 }
112 static NR::FilterMorphologyOperator sp_feMorphology_read_operator(gchar const *value){
113 if (!value) return NR::MORPHOLOGY_OPERATOR_ERODE; //erode is default
114 switch(value[0]){
115 case 'e':
116 if (strncmp(value, "erode", 5) == 0) return NR::MORPHOLOGY_OPERATOR_ERODE;
117 break;
118 case 'd':
119 if (strncmp(value, "dilate", 6) == 0) return NR::MORPHOLOGY_OPERATOR_DILATE;
120 break;
121 }
122 return NR::MORPHOLOGY_OPERATOR_ERODE; //erode is default
123 }
125 /**
126 * Sets a specific value in the SPFeMorphology.
127 */
128 static void
129 sp_feMorphology_set(SPObject *object, unsigned int key, gchar const *value)
130 {
131 SPFeMorphology *feMorphology = SP_FEMORPHOLOGY(object);
132 (void)feMorphology;
134 NR::FilterMorphologyOperator read_operator;
135 switch(key) {
136 /*DEAL WITH SETTING ATTRIBUTES HERE*/
137 case SP_ATTR_OPERATOR:
138 read_operator = sp_feMorphology_read_operator(value);
139 if (read_operator != feMorphology->Operator){
140 feMorphology->Operator = read_operator;
141 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
142 }
143 break;
144 case SP_ATTR_RADIUS:
145 feMorphology->radius.set(value);
146 //From SVG spec: If <y-radius> is not provided, it defaults to <x-radius>.
147 if (feMorphology->radius.optNumIsSet() == false)
148 feMorphology->radius.setOptNumber(feMorphology->radius.getNumber());
149 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
150 break;
151 default:
152 if (((SPObjectClass *) feMorphology_parent_class)->set)
153 ((SPObjectClass *) feMorphology_parent_class)->set(object, key, value);
154 break;
155 }
157 }
159 /**
160 * Receives update notifications.
161 */
162 static void
163 sp_feMorphology_update(SPObject *object, SPCtx *ctx, guint flags)
164 {
165 if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
166 SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
168 /* do something to trigger redisplay, updates? */
170 }
172 if (((SPObjectClass *) feMorphology_parent_class)->update) {
173 ((SPObjectClass *) feMorphology_parent_class)->update(object, ctx, flags);
174 }
175 }
177 /**
178 * Writes its settings to an incoming repr object, if any.
179 */
180 static Inkscape::XML::Node *
181 sp_feMorphology_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
182 {
183 // Inkscape-only object, not copied during an "plain SVG" dump:
184 if (flags & SP_OBJECT_WRITE_EXT) {
185 if (repr) {
186 // is this sane?
187 repr->mergeFrom(SP_OBJECT_REPR(object), "id");
188 } else {
189 repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
190 }
191 }
193 if (((SPObjectClass *) feMorphology_parent_class)->write) {
194 ((SPObjectClass *) feMorphology_parent_class)->write(object, repr, flags);
195 }
197 return repr;
198 }
200 static void sp_feMorphology_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) {
201 g_assert(primitive != NULL);
202 g_assert(filter != NULL);
204 SPFeMorphology *sp_morphology = SP_FEMORPHOLOGY(primitive);
206 int primitive_n = filter->add_primitive(NR::NR_FILTER_MORPHOLOGY);
207 NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
208 NR::FilterMorphology *nr_morphology = dynamic_cast<NR::FilterMorphology*>(nr_primitive);
209 g_assert(nr_morphology != NULL);
211 sp_filter_primitive_renderer_common(primitive, nr_primitive);
213 nr_morphology->set_operator(sp_morphology->Operator);
214 nr_morphology->set_xradius( (int)sp_morphology->radius.getNumber() );
215 nr_morphology->set_yradius( (int)sp_morphology->radius.getOptNumber() );
216 }
218 /*
219 Local Variables:
220 mode:c++
221 c-file-style:"stroustrup"
222 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
223 indent-tabs-mode:nil
224 fill-column:99
225 End:
226 */
227 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :