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/** \file
* SVG <feOffset> implementation.
*
*/
/*
* Authors:
* hugo Rodrigues <haa.rodrigues@gmail.com>
* Niko Kiirala <niko@kiirala.com>
* Abhishek Sharma
*
* Copyright (C) 2006,2007 authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "attributes.h"
#include "svg/svg.h"
#include "filters/offset.h"
#include "helper-fns.h"
#include "xml/repr.h"
#include "display/nr-filter.h"
#include "display/nr-filter-offset.h"
/* FeOffset base class */
static void sp_feOffset_class_init(SPFeOffsetClass *klass);
static void sp_feOffset_init(SPFeOffset *feOffset);
static void sp_feOffset_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
static void sp_feOffset_release(SPObject *object);
static void sp_feOffset_set(SPObject *object, unsigned int key, gchar const *value);
static void sp_feOffset_update(SPObject *object, SPCtx *ctx, guint flags);
static Inkscape::XML::Node *sp_feOffset_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
static void sp_feOffset_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter);
static SPFilterPrimitiveClass *feOffset_parent_class;
GType
sp_feOffset_get_type()
{
static GType feOffset_type = 0;
if (!feOffset_type) {
GTypeInfo feOffset_info = {
sizeof(SPFeOffsetClass),
NULL, NULL,
(GClassInitFunc) sp_feOffset_class_init,
NULL, NULL,
sizeof(SPFeOffset),
16,
(GInstanceInitFunc) sp_feOffset_init,
NULL, /* value_table */
};
feOffset_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeOffset", &feOffset_info, (GTypeFlags)0);
}
return feOffset_type;
}
static void
sp_feOffset_class_init(SPFeOffsetClass *klass)
{
SPObjectClass *sp_object_class = (SPObjectClass *)klass;
SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
feOffset_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
sp_object_class->build = sp_feOffset_build;
sp_object_class->release = sp_feOffset_release;
sp_object_class->write = sp_feOffset_write;
sp_object_class->set = sp_feOffset_set;
sp_object_class->update = sp_feOffset_update;
sp_primitive_class->build_renderer = sp_feOffset_build_renderer;
}
static void
sp_feOffset_init(SPFeOffset *feOffset)
{
feOffset->dx = 0;
feOffset->dy = 0;
}
/**
* Reads the Inkscape::XML::Node, and initializes SPFeOffset 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_feOffset_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
{
if (((SPObjectClass *) feOffset_parent_class)->build) {
((SPObjectClass *) feOffset_parent_class)->build(object, document, repr);
}
object->readAttr( "dx" );
object->readAttr( "dy" );
}
/**
* Drops any allocated memory.
*/
static void
sp_feOffset_release(SPObject *object)
{
if (((SPObjectClass *) feOffset_parent_class)->release)
((SPObjectClass *) feOffset_parent_class)->release(object);
}
/**
* Sets a specific value in the SPFeOffset.
*/
static void
sp_feOffset_set(SPObject *object, unsigned int key, gchar const *value)
{
SPFeOffset *feOffset = SP_FEOFFSET(object);
double read_num;
switch(key) {
case SP_ATTR_DX:
read_num = value ? helperfns_read_number(value) : 0;
if (read_num != feOffset->dx) {
feOffset->dx = read_num;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_DY:
read_num = value ? helperfns_read_number(value) : 0;
if (read_num != feOffset->dy) {
feOffset->dy = read_num;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
/*DEAL WITH SETTING ATTRIBUTES HERE*/
default:
if (((SPObjectClass *) feOffset_parent_class)->set)
((SPObjectClass *) feOffset_parent_class)->set(object, key, value);
break;
}
}
/**
* Receives update notifications.
*/
static void
sp_feOffset_update(SPObject *object, SPCtx *ctx, guint flags)
{
if (flags & SP_OBJECT_MODIFIED_FLAG) {
object->readAttr( "dx" );
object->readAttr( "dy" );
}
if (((SPObjectClass *) feOffset_parent_class)->update) {
((SPObjectClass *) feOffset_parent_class)->update(object, ctx, flags);
}
}
/**
* Writes its settings to an incoming repr object, if any.
*/
static Inkscape::XML::Node *
sp_feOffset_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 *) feOffset_parent_class)->write) {
((SPObjectClass *) feOffset_parent_class)->write(object, doc, repr, flags);
}
return repr;
}
static void sp_feOffset_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter) {
g_assert(primitive != NULL);
g_assert(filter != NULL);
SPFeOffset *sp_offset = SP_FEOFFSET(primitive);
int primitive_n = filter->add_primitive(Inkscape::Filters::NR_FILTER_OFFSET);
Inkscape::Filters::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
Inkscape::Filters::FilterOffset *nr_offset = dynamic_cast<Inkscape::Filters::FilterOffset*>(nr_primitive);
g_assert(nr_offset != NULL);
sp_filter_primitive_renderer_common(primitive, nr_primitive);
nr_offset->set_dx(sp_offset->dx);
nr_offset->set_dy(sp_offset->dy);
}
/*
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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