01290391f68b98aaeee43b2b6ab28d34a6d5fab2
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 <string.h>
23 #include "attributes.h"
24 #include "svg/svg.h"
25 #include "sp-femorphology.h"
26 #include "xml/repr.h"
27 #include "display/nr-filter-morphology.h"
29 /* FeMorphology base class */
31 static void sp_feMorphology_class_init(SPFeMorphologyClass *klass);
32 static void sp_feMorphology_init(SPFeMorphology *feMorphology);
34 static void sp_feMorphology_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
35 static void sp_feMorphology_release(SPObject *object);
36 static void sp_feMorphology_set(SPObject *object, unsigned int key, gchar const *value);
37 static void sp_feMorphology_update(SPObject *object, SPCtx *ctx, guint flags);
38 static Inkscape::XML::Node *sp_feMorphology_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
39 static void sp_feMorphology_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
41 static SPFilterPrimitiveClass *feMorphology_parent_class;
43 GType
44 sp_feMorphology_get_type()
45 {
46 static GType feMorphology_type = 0;
48 if (!feMorphology_type) {
49 GTypeInfo feMorphology_info = {
50 sizeof(SPFeMorphologyClass),
51 NULL, NULL,
52 (GClassInitFunc) sp_feMorphology_class_init,
53 NULL, NULL,
54 sizeof(SPFeMorphology),
55 16,
56 (GInstanceInitFunc) sp_feMorphology_init,
57 NULL, /* value_table */
58 };
59 feMorphology_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeMorphology", &feMorphology_info, (GTypeFlags)0);
60 }
61 return feMorphology_type;
62 }
64 static void
65 sp_feMorphology_class_init(SPFeMorphologyClass *klass)
66 {
67 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
68 SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
70 feMorphology_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
72 sp_object_class->build = sp_feMorphology_build;
73 sp_object_class->release = sp_feMorphology_release;
74 sp_object_class->write = sp_feMorphology_write;
75 sp_object_class->set = sp_feMorphology_set;
76 sp_object_class->update = sp_feMorphology_update;
77 sp_primitive_class->build_renderer = sp_feMorphology_build_renderer;
78 }
80 static void
81 sp_feMorphology_init(SPFeMorphology *feMorphology)
82 {
83 //Setting default values:
84 feMorphology->radius.set("0");
85 }
87 /**
88 * Reads the Inkscape::XML::Node, and initializes SPFeMorphology variables. For this to get called,
89 * our name must be associated with a repr via "sp_object_type_register". Best done through
90 * sp-object-repr.cpp's repr_name_entries array.
91 */
92 static void
93 sp_feMorphology_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
94 {
95 if (((SPObjectClass *) feMorphology_parent_class)->build) {
96 ((SPObjectClass *) feMorphology_parent_class)->build(object, document, repr);
97 }
99 /*LOAD ATTRIBUTES FROM REPR HERE*/
100 sp_object_read_attr(object, "operator");
101 sp_object_read_attr(object, "radius");
102 }
104 /**
105 * Drops any allocated memory.
106 */
107 static void
108 sp_feMorphology_release(SPObject *object)
109 {
110 if (((SPObjectClass *) feMorphology_parent_class)->release)
111 ((SPObjectClass *) feMorphology_parent_class)->release(object);
112 }
114 static NR::FilterMorphologyOperator sp_feMorphology_read_operator(gchar const *value){
115 if (!value) return NR::MORPHOLOGY_OPERATOR_ERODE; //erode is default
116 switch(value[0]){
117 case 'e':
118 if (strncmp(value, "erode", 5) == 0) return NR::MORPHOLOGY_OPERATOR_ERODE;
119 break;
120 case 'd':
121 if (strncmp(value, "dilate", 6) == 0) return NR::MORPHOLOGY_OPERATOR_DILATE;
122 break;
123 }
124 return NR::MORPHOLOGY_OPERATOR_ERODE; //erode is default
125 }
127 /**
128 * Sets a specific value in the SPFeMorphology.
129 */
130 static void
131 sp_feMorphology_set(SPObject *object, unsigned int key, gchar const *value)
132 {
133 SPFeMorphology *feMorphology = SP_FEMORPHOLOGY(object);
134 (void)feMorphology;
136 NR::FilterMorphologyOperator read_operator;
137 switch(key) {
138 /*DEAL WITH SETTING ATTRIBUTES HERE*/
139 case SP_ATTR_OPERATOR:
140 read_operator = sp_feMorphology_read_operator(value);
141 if (read_operator != feMorphology->Operator){
142 feMorphology->Operator = read_operator;
143 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
144 }
145 break;
146 case SP_ATTR_RADIUS:
147 feMorphology->radius.set(value);
148 //From SVG spec: If <y-radius> is not provided, it defaults to <x-radius>.
149 if (feMorphology->radius.optNumIsSet() == false)
150 feMorphology->radius.setOptNumber(feMorphology->radius.getNumber());
151 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
152 break;
153 default:
154 if (((SPObjectClass *) feMorphology_parent_class)->set)
155 ((SPObjectClass *) feMorphology_parent_class)->set(object, key, value);
156 break;
157 }
159 }
161 /**
162 * Receives update notifications.
163 */
164 static void
165 sp_feMorphology_update(SPObject *object, SPCtx *ctx, guint flags)
166 {
167 if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
168 SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
170 /* do something to trigger redisplay, updates? */
172 }
174 if (((SPObjectClass *) feMorphology_parent_class)->update) {
175 ((SPObjectClass *) feMorphology_parent_class)->update(object, ctx, flags);
176 }
177 }
179 /**
180 * Writes its settings to an incoming repr object, if any.
181 */
182 static Inkscape::XML::Node *
183 sp_feMorphology_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
184 {
185 // Inkscape-only object, not copied during an "plain SVG" dump:
186 if (flags & SP_OBJECT_WRITE_EXT) {
187 if (repr) {
188 // is this sane?
189 //repr->mergeFrom(SP_OBJECT_REPR(object), "id");
190 } else {
191 repr = SP_OBJECT_REPR(object)->duplicate(doc);
192 }
193 }
195 if (((SPObjectClass *) feMorphology_parent_class)->write) {
196 ((SPObjectClass *) feMorphology_parent_class)->write(object, doc, repr, flags);
197 }
199 return repr;
200 }
202 static void sp_feMorphology_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) {
203 g_assert(primitive != NULL);
204 g_assert(filter != NULL);
206 SPFeMorphology *sp_morphology = SP_FEMORPHOLOGY(primitive);
208 int primitive_n = filter->add_primitive(NR::NR_FILTER_MORPHOLOGY);
209 NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
210 NR::FilterMorphology *nr_morphology = dynamic_cast<NR::FilterMorphology*>(nr_primitive);
211 g_assert(nr_morphology != NULL);
213 sp_filter_primitive_renderer_common(primitive, nr_primitive);
215 nr_morphology->set_operator(sp_morphology->Operator);
216 nr_morphology->set_xradius( sp_morphology->radius.getNumber() );
217 nr_morphology->set_yradius( sp_morphology->radius.getOptNumber() );
218 }
220 /*
221 Local Variables:
222 mode:c++
223 c-file-style:"stroustrup"
224 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
225 indent-tabs-mode:nil
226 fill-column:99
227 End:
228 */
229 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :