1 #define __SP_FEIMAGE_CPP__
3 /** \file
4 * SVG <feImage> 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) 2007 Felipe Sanches
13 * Copyright (C) 2006 Hugo Rodrigues
14 *
15 * Released under GNU GPL, read the file 'COPYING' for more information
16 */
18 #ifdef HAVE_CONFIG_H
19 # include "config.h"
20 #endif
22 #include "attributes.h"
23 #include "svg/svg.h"
24 #include "sp-feimage.h"
25 #include "xml/repr.h"
26 #include <string.h>
28 #include "display/nr-filter.h"
29 #include "display/nr-filter-image.h"
31 /* FeImage base class */
33 static void sp_feImage_class_init(SPFeImageClass *klass);
34 static void sp_feImage_init(SPFeImage *feImage);
36 static void sp_feImage_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
37 static void sp_feImage_release(SPObject *object);
38 static void sp_feImage_set(SPObject *object, unsigned int key, gchar const *value);
39 static void sp_feImage_update(SPObject *object, SPCtx *ctx, guint flags);
40 static Inkscape::XML::Node *sp_feImage_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
41 static void sp_feImage_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
43 static SPFilterPrimitiveClass *feImage_parent_class;
45 GType
46 sp_feImage_get_type()
47 {
48 static GType feImage_type = 0;
50 if (!feImage_type) {
51 GTypeInfo feImage_info = {
52 sizeof(SPFeImageClass),
53 NULL, NULL,
54 (GClassInitFunc) sp_feImage_class_init,
55 NULL, NULL,
56 sizeof(SPFeImage),
57 16,
58 (GInstanceInitFunc) sp_feImage_init,
59 NULL, /* value_table */
60 };
61 feImage_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeImage", &feImage_info, (GTypeFlags)0);
62 }
63 return feImage_type;
64 }
66 static void
67 sp_feImage_class_init(SPFeImageClass *klass)
68 {
69 SPObjectClass *sp_object_class = (SPObjectClass *)klass;
70 SPFilterPrimitiveClass * sp_primitive_class = (SPFilterPrimitiveClass *)klass;
72 feImage_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
74 sp_object_class->build = sp_feImage_build;
75 sp_object_class->release = sp_feImage_release;
76 sp_object_class->write = sp_feImage_write;
77 sp_object_class->set = sp_feImage_set;
78 sp_object_class->update = sp_feImage_update;
80 sp_primitive_class->build_renderer = sp_feImage_build_renderer;
81 }
83 static void
84 sp_feImage_init(SPFeImage *feImage)
85 {
86 }
88 /**
89 * Reads the Inkscape::XML::Node, and initializes SPFeImage 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_feImage_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
95 {
96 if (((SPObjectClass *) feImage_parent_class)->build) {
97 ((SPObjectClass *) feImage_parent_class)->build(object, document, repr);
98 }
100 /*LOAD ATTRIBUTES FROM REPR HERE*/
101 /* apparently there's no attribute to load here
102 since 'in' and 'xlink:href' are common filter attributes.
103 --Juca
104 */
105 sp_object_read_attr(object, "x");
106 sp_object_read_attr(object, "y");
107 sp_object_read_attr(object, "width");
108 sp_object_read_attr(object, "height");
110 }
112 /**
113 * Drops any allocated memory.
114 */
115 static void
116 sp_feImage_release(SPObject *object)
117 {
119 if (((SPObjectClass *) feImage_parent_class)->release)
120 ((SPObjectClass *) feImage_parent_class)->release(object);
121 }
123 /**
124 * Sets a specific value in the SPFeImage.
125 */
126 static void
127 sp_feImage_set(SPObject *object, unsigned int key, gchar const *value)
128 {
129 SPFeImage *feImage = SP_FEIMAGE(object);
130 (void)feImage;
132 switch(key) {
133 /*DEAL WITH SETTING ATTRIBUTES HERE*/
134 case SP_ATTR_X:
135 feImage->x.readOrUnset(value);
136 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
137 break;
138 case SP_ATTR_Y:
139 feImage->y.readOrUnset(value);
140 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
141 break;
142 case SP_ATTR_WIDTH:
143 feImage->width.readOrUnset(value);
144 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
145 break;
146 case SP_ATTR_HEIGHT:
147 feImage->height.readOrUnset(value);
148 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
149 break;
150 default:
151 if (((SPObjectClass *) feImage_parent_class)->set)
152 ((SPObjectClass *) feImage_parent_class)->set(object, key, value);
153 break;
154 }
156 }
158 /**
159 * Receives update notifications.
160 */
161 static void
162 sp_feImage_update(SPObject *object, SPCtx *ctx, guint flags)
163 {
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? */
169 }
171 if (((SPObjectClass *) feImage_parent_class)->update) {
172 ((SPObjectClass *) feImage_parent_class)->update(object, ctx, flags);
173 }
174 }
176 /**
177 * Writes its settings to an incoming repr object, if any.
178 */
179 static Inkscape::XML::Node *
180 sp_feImage_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
181 {
182 // Inkscape-only object, not copied during an "plain SVG" dump:
183 if (flags & SP_OBJECT_WRITE_EXT) {
184 if (repr) {
185 // is this sane?
186 repr->mergeFrom(SP_OBJECT_REPR(object), "id");
187 } else {
188 repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
189 }
190 }
192 if (((SPObjectClass *) feImage_parent_class)->write) {
193 ((SPObjectClass *) feImage_parent_class)->write(object, repr, flags);
194 }
196 return repr;
197 }
199 static void sp_feImage_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) {
200 g_assert(primitive != NULL);
201 g_assert(filter != NULL);
203 SPFeImage *sp_image = SP_FEIMAGE(primitive);
205 int primitive_n = filter->add_primitive(NR::NR_FILTER_IMAGE);
206 NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
207 NR::FilterImage *nr_image = dynamic_cast<NR::FilterImage*>(nr_primitive);
208 g_assert(nr_image != NULL);
210 sp_filter_primitive_renderer_common(primitive, nr_primitive);
211 nr_image->set_region(sp_image->x, sp_image->y, sp_image->width, sp_image->height);
212 }
214 /*
215 Local Variables:
216 mode:c++
217 c-file-style:"stroustrup"
218 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
219 indent-tabs-mode:nil
220 fill-column:99
221 End:
222 */
223 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :