1 #define __SP_GAUSSIANBLUR_CPP__
3 /** \file
4 * SVG <gaussianBlur> implementation.
5 *
6 */
7 /*
8 * Authors:
9 * Hugo Rodrigues <haa.rodrigues@gmail.com>
10 * Niko Kiirala <niko@kiirala.com>
11 *
12 * Copyright (C) 2006,2007 Authors
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-gaussian-blur.h"
24 #include "xml/repr.h"
26 #include "display/nr-filter.h"
27 #include "display/nr-filter-primitive.h"
28 #include "display/nr-filter-gaussian.h"
29 #include "display/nr-filter-types.h"
31 //#define SP_MACROS_SILENT
32 //#include "macros.h"
34 /* GaussianBlur base class */
36 static void sp_gaussianBlur_class_init(SPGaussianBlurClass *klass);
37 static void sp_gaussianBlur_init(SPGaussianBlur *gaussianBlur);
39 static void sp_gaussianBlur_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
40 static void sp_gaussianBlur_release(SPObject *object);
41 static void sp_gaussianBlur_set(SPObject *object, unsigned int key, gchar const *value);
42 static void sp_gaussianBlur_update(SPObject *object, SPCtx *ctx, guint flags);
43 static Inkscape::XML::Node *sp_gaussianBlur_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
44 static void sp_gaussianBlur_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter);
46 static SPFilterPrimitiveClass *gaussianBlur_parent_class;
48 GType
49 sp_gaussianBlur_get_type()
50 {
51 static GType gaussianBlur_type = 0;
53 if (!gaussianBlur_type) {
54 GTypeInfo gaussianBlur_info = {
55 sizeof(SPGaussianBlurClass),
56 NULL, NULL,
57 (GClassInitFunc) sp_gaussianBlur_class_init,
58 NULL, NULL,
59 sizeof(SPGaussianBlur),
60 16,
61 (GInstanceInitFunc) sp_gaussianBlur_init,
62 NULL, /* value_table */
63 };
64 gaussianBlur_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPGaussianBlur", &gaussianBlur_info, (GTypeFlags)0);
65 }
66 return gaussianBlur_type;
67 }
69 static void
70 sp_gaussianBlur_class_init(SPGaussianBlurClass *klass)
71 {
72 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
73 SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
75 gaussianBlur_parent_class = (SPFilterPrimitiveClass *)g_type_class_peek_parent(klass);
77 sp_object_class->build = sp_gaussianBlur_build;
78 sp_object_class->release = sp_gaussianBlur_release;
79 sp_object_class->write = sp_gaussianBlur_write;
80 sp_object_class->set = sp_gaussianBlur_set;
81 sp_object_class->update = sp_gaussianBlur_update;
83 sp_primitive_class->build_renderer = sp_gaussianBlur_build_renderer;
84 }
86 static void
87 sp_gaussianBlur_init(SPGaussianBlur */*gaussianBlur*/)
88 {
89 }
91 /**
92 * Reads the Inkscape::XML::Node, and initializes SPGaussianBlur variables. For this to get called,
93 * our name must be associated with a repr via "sp_object_type_register". Best done through
94 * sp-object-repr.cpp's repr_name_entries array.
95 */
96 static void
97 sp_gaussianBlur_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
98 {
99 if (((SPObjectClass *) gaussianBlur_parent_class)->build) {
100 ((SPObjectClass *) gaussianBlur_parent_class)->build(object, document, repr);
101 }
103 sp_object_read_attr(object, "stdDeviation");
105 }
107 /**
108 * Drops any allocated memory.
109 */
110 static void
111 sp_gaussianBlur_release(SPObject *object)
112 {
114 if (((SPObjectClass *) gaussianBlur_parent_class)->release)
115 ((SPObjectClass *) gaussianBlur_parent_class)->release(object);
116 }
118 /**
119 * Sets a specific value in the SPGaussianBlur.
120 */
121 static void
122 sp_gaussianBlur_set(SPObject *object, unsigned int key, gchar const *value)
123 {
124 SPGaussianBlur *gaussianBlur = SP_GAUSSIANBLUR(object);
126 switch(key) {
127 case SP_ATTR_STDDEVIATION:
128 gaussianBlur->stdDeviation.set(value);
129 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
130 break;
131 default:
132 if (((SPObjectClass *) gaussianBlur_parent_class)->set)
133 ((SPObjectClass *) gaussianBlur_parent_class)->set(object, key, value);
134 break;
135 }
137 }
139 /**
140 * Receives update notifications.
141 */
142 static void
143 sp_gaussianBlur_update(SPObject *object, SPCtx *ctx, guint flags)
144 {
145 if (flags & SP_OBJECT_MODIFIED_FLAG) {
146 sp_object_read_attr(object, "stdDeviation");
147 }
149 if (((SPObjectClass *) gaussianBlur_parent_class)->update) {
150 ((SPObjectClass *) gaussianBlur_parent_class)->update(object, ctx, flags);
151 }
152 }
154 /**
155 * Writes its settings to an incoming repr object, if any.
156 */
157 static Inkscape::XML::Node *
158 sp_gaussianBlur_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
159 {
161 // Inkscape-only object, not copied during an "plain SVG" dump:
162 if (flags & SP_OBJECT_WRITE_EXT) {
163 if (repr) {
164 // is this sane?
165 // repr->mergeFrom(SP_OBJECT_REPR(object), "id");
166 } else {
167 repr = SP_OBJECT_REPR(object)->duplicate(doc); // FIXME
168 }
169 }
171 if (((SPObjectClass *) gaussianBlur_parent_class)->write) {
172 ((SPObjectClass *) gaussianBlur_parent_class)->write(object, doc, repr, flags);
173 }
175 return repr;
176 }
179 void sp_gaussianBlur_setDeviation(SPGaussianBlur *blur, float num)
180 {
181 blur->stdDeviation.setNumber(num);
182 }
183 void sp_gaussianBlur_setDeviation(SPGaussianBlur *blur, float num, float optnum)
184 {
185 blur->stdDeviation.setNumber(num);
186 blur->stdDeviation.setOptNumber(optnum);
187 }
189 static void sp_gaussianBlur_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter) {
190 SPGaussianBlur *sp_blur = SP_GAUSSIANBLUR(primitive);
192 int handle = filter->add_primitive(Inkscape::Filters::NR_FILTER_GAUSSIANBLUR);
193 Inkscape::Filters::FilterPrimitive *nr_primitive = filter->get_primitive(handle);
194 Inkscape::Filters::FilterGaussian *nr_blur = dynamic_cast<Inkscape::Filters::FilterGaussian*>(nr_primitive);
196 sp_filter_primitive_renderer_common(primitive, nr_primitive);
198 gfloat num = sp_blur->stdDeviation.getNumber();
199 if (num >= 0.0) {
200 gfloat optnum = sp_blur->stdDeviation.getOptNumber();
201 if(optnum >= 0.0)
202 nr_blur->set_deviation((double) num, (double) optnum);
203 else
204 nr_blur->set_deviation((double) num);
205 }
206 }
208 /*
209 Local Variables:
210 mode:c++
211 c-file-style:"stroustrup"
212 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
213 indent-tabs-mode:nil
214 fill-column:99
215 End:
216 */
217 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :