1 #define __SP_FECONVOLVEMATRIX_CPP__
3 /** \file
4 * SVG <feConvolveMatrix> implementation.
5 *
6 */
7 /*
8 * Authors:
9 * Felipe CorrĂȘa da Silva 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 <vector>
22 #include "attributes.h"
23 #include "svg/svg.h"
24 #include "sp-feconvolvematrix.h"
25 #include "xml/repr.h"
26 #include "display/nr-filter-convolve-matrix.h"
28 /* FeConvolveMatrix base class */
30 static void sp_feConvolveMatrix_class_init(SPFeConvolveMatrixClass *klass);
31 static void sp_feConvolveMatrix_init(SPFeConvolveMatrix *feConvolveMatrix);
33 static void sp_feConvolveMatrix_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
34 static void sp_feConvolveMatrix_release(SPObject *object);
35 static void sp_feConvolveMatrix_set(SPObject *object, unsigned int key, gchar const *value);
36 static void sp_feConvolveMatrix_update(SPObject *object, SPCtx *ctx, guint flags);
37 static Inkscape::XML::Node *sp_feConvolveMatrix_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
38 static void sp_feConvolveMatrix_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
40 static SPFilterPrimitiveClass *feConvolveMatrix_parent_class;
42 GType
43 sp_feConvolveMatrix_get_type()
44 {
45 static GType feConvolveMatrix_type = 0;
47 if (!feConvolveMatrix_type) {
48 GTypeInfo feConvolveMatrix_info = {
49 sizeof(SPFeConvolveMatrixClass),
50 NULL, NULL,
51 (GClassInitFunc) sp_feConvolveMatrix_class_init,
52 NULL, NULL,
53 sizeof(SPFeConvolveMatrix),
54 16,
55 (GInstanceInitFunc) sp_feConvolveMatrix_init,
56 NULL, /* value_table */
57 };
58 feConvolveMatrix_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeConvolveMatrix", &feConvolveMatrix_info, (GTypeFlags)0);
59 }
60 return feConvolveMatrix_type;
61 }
63 static void
64 sp_feConvolveMatrix_class_init(SPFeConvolveMatrixClass *klass)
65 {
66 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
67 SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
69 feConvolveMatrix_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
71 sp_object_class->build = sp_feConvolveMatrix_build;
72 sp_object_class->release = sp_feConvolveMatrix_release;
73 sp_object_class->write = sp_feConvolveMatrix_write;
74 sp_object_class->set = sp_feConvolveMatrix_set;
75 sp_object_class->update = sp_feConvolveMatrix_update;
77 sp_primitive_class->build_renderer = sp_feConvolveMatrix_build_renderer;
78 }
80 static void
81 sp_feConvolveMatrix_init(SPFeConvolveMatrix *feConvolveMatrix)
82 {
83 feConvolveMatrix->divisor=0;
84 feConvolveMatrix->preserveAlpha = false;
85 feConvolveMatrix->order.set("3 3");
86 }
88 /**
89 * Reads the Inkscape::XML::Node, and initializes SPFeConvolveMatrix variables. For this to get called,
90 * our name must be associated with a repr via "sp_object_type_register". Best done through
91 * sp-object-repr.cpp's repr_name_entries array.
92 */
93 static void
94 sp_feConvolveMatrix_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
95 {
96 if (((SPObjectClass *) feConvolveMatrix_parent_class)->build) {
97 ((SPObjectClass *) feConvolveMatrix_parent_class)->build(object, document, repr);
98 }
100 /*LOAD ATTRIBUTES FROM REPR HERE*/
101 sp_object_read_attr(object, "order");
102 sp_object_read_attr(object, "kernelMatrix");
103 sp_object_read_attr(object, "divisor");
104 sp_object_read_attr(object, "bias");
105 sp_object_read_attr(object, "targetX");
106 sp_object_read_attr(object, "targetY");
107 sp_object_read_attr(object, "edgeMode");
108 sp_object_read_attr(object, "kernelUnitLength");
109 sp_object_read_attr(object, "preserveAlpha");
111 }
113 /**
114 * Drops any allocated memory.
115 */
116 static void
117 sp_feConvolveMatrix_release(SPObject *object)
118 {
119 if (((SPObjectClass *) feConvolveMatrix_parent_class)->release)
120 ((SPObjectClass *) feConvolveMatrix_parent_class)->release(object);
121 }
124 static std::vector<gdouble> read_kernel_matrix(const gchar* value, int size){
125 std::vector<gdouble> v(size, (gdouble) 0);
126 int i;
127 gchar** values = g_strsplit(value , " ", size);
128 for (i=0;i<size;i++)
129 v[i] = g_ascii_strtod(values[i], NULL);
130 return v;
131 }
133 static double
134 sp_feConvolveMatrix_read_number(gchar const *value) {
135 if (!value) return 0;
136 char *end;
137 double ret = g_ascii_strtod(value, &end);
138 if (*end) {
139 g_warning("Unable to convert \"%s\" to number", value);
140 // We could leave this out, too. If strtod can't convert
141 // anything, it will return zero.
142 ret = 0;
143 }
144 return ret;
145 }
147 /**
148 * Sets a specific value in the SPFeConvolveMatrix.
149 */
150 static void
151 sp_feConvolveMatrix_set(SPObject *object, unsigned int key, gchar const *value)
152 {
153 SPFeConvolveMatrix *feConvolveMatrix = SP_FECONVOLVEMATRIX(object);
154 (void)feConvolveMatrix;
156 switch(key) {
157 /*DEAL WITH SETTING ATTRIBUTES HERE*/
158 case SP_ATTR_ORDER:
159 feConvolveMatrix->order.set(value);
160 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
161 break;
162 case SP_ATTR_KERNELMATRIX:
163 feConvolveMatrix->kernelMatrix = read_kernel_matrix(value, (int) (feConvolveMatrix->order.getNumber() * feConvolveMatrix->order.getOptNumber()));
164 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
165 break;
166 case SP_ATTR_DIVISOR:
167 feConvolveMatrix->divisor = sp_feConvolveMatrix_read_number(value);
168 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
169 break;
170 case SP_ATTR_BIAS:
171 feConvolveMatrix->bias = sp_feConvolveMatrix_read_number(value);
172 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
173 break;
174 case SP_ATTR_TARGETX:
175 feConvolveMatrix->targetX = (int) sp_feConvolveMatrix_read_number(value);
176 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
177 break;
178 case SP_ATTR_TARGETY:
179 feConvolveMatrix->targetY = (int) sp_feConvolveMatrix_read_number(value);
180 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
181 break;
182 case SP_ATTR_EDGEMODE:
183 //TODO
184 break;
185 case SP_ATTR_KERNELUNITLENGTH:
186 feConvolveMatrix->kernelUnitLength.set(value);
187 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
188 break;
189 case SP_ATTR_PRESERVEALPHA:
190 //TODO
191 break;
193 default:
194 if (((SPObjectClass *) feConvolveMatrix_parent_class)->set)
195 ((SPObjectClass *) feConvolveMatrix_parent_class)->set(object, key, value);
196 break;
197 }
199 }
201 /**
202 * Receives update notifications.
203 */
204 static void
205 sp_feConvolveMatrix_update(SPObject *object, SPCtx *ctx, guint flags)
206 {
207 if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
208 SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
210 /* do something to trigger redisplay, updates? */
212 }
214 if (((SPObjectClass *) feConvolveMatrix_parent_class)->update) {
215 ((SPObjectClass *) feConvolveMatrix_parent_class)->update(object, ctx, flags);
216 }
217 }
219 /**
220 * Writes its settings to an incoming repr object, if any.
221 */
222 static Inkscape::XML::Node *
223 sp_feConvolveMatrix_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
224 {
225 // Inkscape-only object, not copied during an "plain SVG" dump:
226 if (flags & SP_OBJECT_WRITE_EXT) {
227 if (repr) {
228 // is this sane?
229 repr->mergeFrom(SP_OBJECT_REPR(object), "id");
230 } else {
231 repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
232 }
233 }
235 if (((SPObjectClass *) feConvolveMatrix_parent_class)->write) {
236 ((SPObjectClass *) feConvolveMatrix_parent_class)->write(object, repr, flags);
237 }
239 return repr;
240 }
242 static void sp_feConvolveMatrix_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) {
243 g_assert(primitive != NULL);
244 g_assert(filter != NULL);
246 SPFeConvolveMatrix *sp_convolve = SP_FECONVOLVEMATRIX(primitive);
248 int primitive_n = filter->add_primitive(NR::NR_FILTER_CONVOLVEMATRIX);
249 NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
250 NR::FilterConvolveMatrix *nr_convolve = dynamic_cast<NR::FilterConvolveMatrix*>(nr_primitive);
251 g_assert(nr_convolve != NULL);
253 sp_filter_primitive_renderer_common(primitive, nr_primitive);
255 nr_convolve->set_targetX(sp_convolve->targetX);
256 nr_convolve->set_targetY(sp_convolve->targetY);
257 nr_convolve->set_orderX( (int)sp_convolve->order.getNumber() );
258 nr_convolve->set_orderY( (int)sp_convolve->order.getOptNumber() );
259 nr_convolve->set_kernelMatrix(sp_convolve->kernelMatrix);
260 nr_convolve->set_divisor(sp_convolve->divisor);
261 nr_convolve->set_bias(sp_convolve->bias);
263 }
264 /*
265 Local Variables:
266 mode:c++
267 c-file-style:"stroustrup"
268 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
269 indent-tabs-mode:nil
270 fill-column:99
271 End:
272 */
273 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :