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/** \file
* SVG <feMorphology> implementation.
*
*/
/*
* Authors:
* Felipe Sanches <juca@members.fsf.org>
* Hugo Rodrigues <haa.rodrigues@gmail.com>
* Abhishek Sharma
*
* Copyright (C) 2006 Hugo Rodrigues
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include "attributes.h"
#include "svg/svg.h"
#include "morphology.h"
#include "xml/repr.h"
#include "display/nr-filter.h"
#include "display/nr-filter-morphology.h"
/* FeMorphology base class */
static void sp_feMorphology_class_init(SPFeMorphologyClass *klass);
static void sp_feMorphology_init(SPFeMorphology *feMorphology);
static void sp_feMorphology_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
static void sp_feMorphology_release(SPObject *object);
static void sp_feMorphology_set(SPObject *object, unsigned int key, gchar const *value);
static void sp_feMorphology_update(SPObject *object, SPCtx *ctx, guint flags);
static Inkscape::XML::Node *sp_feMorphology_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
static void sp_feMorphology_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter);
static SPFilterPrimitiveClass *feMorphology_parent_class;
GType
sp_feMorphology_get_type()
{
static GType feMorphology_type = 0;
if (!feMorphology_type) {
GTypeInfo feMorphology_info = {
sizeof(SPFeMorphologyClass),
NULL, NULL,
(GClassInitFunc) sp_feMorphology_class_init,
NULL, NULL,
sizeof(SPFeMorphology),
16,
(GInstanceInitFunc) sp_feMorphology_init,
NULL, /* value_table */
};
feMorphology_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeMorphology", &feMorphology_info, (GTypeFlags)0);
}
return feMorphology_type;
}
static void
sp_feMorphology_class_init(SPFeMorphologyClass *klass)
{
SPObjectClass *sp_object_class = (SPObjectClass *)klass;
SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
feMorphology_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
sp_object_class->build = sp_feMorphology_build;
sp_object_class->release = sp_feMorphology_release;
sp_object_class->write = sp_feMorphology_write;
sp_object_class->set = sp_feMorphology_set;
sp_object_class->update = sp_feMorphology_update;
sp_primitive_class->build_renderer = sp_feMorphology_build_renderer;
}
static void
sp_feMorphology_init(SPFeMorphology *feMorphology)
{
//Setting default values:
feMorphology->radius.set("0");
}
/**
* Reads the Inkscape::XML::Node, and initializes SPFeMorphology variables. For this to get called,
* our name must be associated with a repr via "sp_object_type_register". Best done through
* sp-object-repr.cpp's repr_name_entries array.
*/
static void
sp_feMorphology_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
{
if (((SPObjectClass *) feMorphology_parent_class)->build) {
((SPObjectClass *) feMorphology_parent_class)->build(object, document, repr);
}
/*LOAD ATTRIBUTES FROM REPR HERE*/
object->readAttr( "operator" );
object->readAttr( "radius" );
}
/**
* Drops any allocated memory.
*/
static void
sp_feMorphology_release(SPObject *object)
{
if (((SPObjectClass *) feMorphology_parent_class)->release)
((SPObjectClass *) feMorphology_parent_class)->release(object);
}
static Inkscape::Filters::FilterMorphologyOperator sp_feMorphology_read_operator(gchar const *value){
if (!value) return Inkscape::Filters::MORPHOLOGY_OPERATOR_ERODE; //erode is default
switch(value[0]){
case 'e':
if (strncmp(value, "erode", 5) == 0) return Inkscape::Filters::MORPHOLOGY_OPERATOR_ERODE;
break;
case 'd':
if (strncmp(value, "dilate", 6) == 0) return Inkscape::Filters::MORPHOLOGY_OPERATOR_DILATE;
break;
}
return Inkscape::Filters::MORPHOLOGY_OPERATOR_ERODE; //erode is default
}
/**
* Sets a specific value in the SPFeMorphology.
*/
static void
sp_feMorphology_set(SPObject *object, unsigned int key, gchar const *value)
{
SPFeMorphology *feMorphology = SP_FEMORPHOLOGY(object);
(void)feMorphology;
Inkscape::Filters::FilterMorphologyOperator read_operator;
switch(key) {
/*DEAL WITH SETTING ATTRIBUTES HERE*/
case SP_ATTR_OPERATOR:
read_operator = sp_feMorphology_read_operator(value);
if (read_operator != feMorphology->Operator){
feMorphology->Operator = read_operator;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_RADIUS:
feMorphology->radius.set(value);
//From SVG spec: If <y-radius> is not provided, it defaults to <x-radius>.
if (feMorphology->radius.optNumIsSet() == false)
feMorphology->radius.setOptNumber(feMorphology->radius.getNumber());
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;
default:
if (((SPObjectClass *) feMorphology_parent_class)->set)
((SPObjectClass *) feMorphology_parent_class)->set(object, key, value);
break;
}
}
/**
* Receives update notifications.
*/
static void
sp_feMorphology_update(SPObject *object, SPCtx *ctx, guint flags)
{
if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
/* do something to trigger redisplay, updates? */
}
if (((SPObjectClass *) feMorphology_parent_class)->update) {
((SPObjectClass *) feMorphology_parent_class)->update(object, ctx, flags);
}
}
/**
* Writes its settings to an incoming repr object, if any.
*/
static Inkscape::XML::Node *
sp_feMorphology_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
{
/* TODO: Don't just clone, but create a new repr node and write all
* relevant values into it */
if (!repr) {
repr = object->getRepr()->duplicate(doc);
}
if (((SPObjectClass *) feMorphology_parent_class)->write) {
((SPObjectClass *) feMorphology_parent_class)->write(object, doc, repr, flags);
}
return repr;
}
static void sp_feMorphology_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter) {
g_assert(primitive != NULL);
g_assert(filter != NULL);
SPFeMorphology *sp_morphology = SP_FEMORPHOLOGY(primitive);
int primitive_n = filter->add_primitive(Inkscape::Filters::NR_FILTER_MORPHOLOGY);
Inkscape::Filters::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
Inkscape::Filters::FilterMorphology *nr_morphology = dynamic_cast<Inkscape::Filters::FilterMorphology*>(nr_primitive);
g_assert(nr_morphology != NULL);
sp_filter_primitive_renderer_common(primitive, nr_primitive);
nr_morphology->set_operator(sp_morphology->Operator);
nr_morphology->set_xradius( sp_morphology->radius.getNumber() );
nr_morphology->set_yradius( sp_morphology->radius.getOptNumber() );
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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