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#define __SP_FEDISPLACEMENTMAP_CPP__
/** \file
* SVG <feDisplacementMap> implementation.
*
*/
/*
* Authors:
* hugo Rodrigues <haa.rodrigues@gmail.com>
*
* 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 "attributes.h"
#include "svg/svg.h"
#include "sp-fedisplacementmap.h"
#include "xml/repr.h"
#include "display/nr-filter-displacement-map.h"
#include "helper-fns.h"
/* FeDisplacementMap base class */
static void sp_feDisplacementMap_class_init(SPFeDisplacementMapClass *klass);
static void sp_feDisplacementMap_init(SPFeDisplacementMap *feDisplacementMap);
static void sp_feDisplacementMap_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
static void sp_feDisplacementMap_release(SPObject *object);
static void sp_feDisplacementMap_set(SPObject *object, unsigned int key, gchar const *value);
static void sp_feDisplacementMap_update(SPObject *object, SPCtx *ctx, guint flags);
static void sp_feDisplacementMap_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
static Inkscape::XML::Node *sp_feDisplacementMap_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
static SPFilterPrimitiveClass *feDisplacementMap_parent_class;
GType
sp_feDisplacementMap_get_type()
{
static GType feDisplacementMap_type = 0;
if (!feDisplacementMap_type) {
GTypeInfo feDisplacementMap_info = {
sizeof(SPFeDisplacementMapClass),
NULL, NULL,
(GClassInitFunc) sp_feDisplacementMap_class_init,
NULL, NULL,
sizeof(SPFeDisplacementMap),
16,
(GInstanceInitFunc) sp_feDisplacementMap_init,
NULL, /* value_table */
};
feDisplacementMap_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeDisplacementMap", &feDisplacementMap_info, (GTypeFlags)0);
}
return feDisplacementMap_type;
}
static void
sp_feDisplacementMap_class_init(SPFeDisplacementMapClass *klass)
{
SPObjectClass *sp_object_class = (SPObjectClass *)klass;
SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
feDisplacementMap_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
sp_object_class->build = sp_feDisplacementMap_build;
sp_object_class->release = sp_feDisplacementMap_release;
sp_object_class->write = sp_feDisplacementMap_write;
sp_object_class->set = sp_feDisplacementMap_set;
sp_object_class->update = sp_feDisplacementMap_update;
sp_primitive_class->build_renderer = sp_feDisplacementMap_build_renderer;
}
static void
sp_feDisplacementMap_init(SPFeDisplacementMap *feDisplacementMap)
{
feDisplacementMap->scale=0;
feDisplacementMap->xChannelSelector = DISPLACEMENTMAP_CHANNEL_ALPHA;
feDisplacementMap->yChannelSelector = DISPLACEMENTMAP_CHANNEL_ALPHA;
feDisplacementMap->in2 = NR::NR_FILTER_SLOT_NOT_SET;
}
/**
* Reads the Inkscape::XML::Node, and initializes SPFeDisplacementMap 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_feDisplacementMap_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
{
if (((SPObjectClass *) feDisplacementMap_parent_class)->build) {
((SPObjectClass *) feDisplacementMap_parent_class)->build(object, document, repr);
}
/*LOAD ATTRIBUTES FROM REPR HERE*/
sp_object_read_attr(object, "scale");
sp_object_read_attr(object, "in2");
sp_object_read_attr(object, "xChannelSelector");
sp_object_read_attr(object, "yChannelSelector");
}
/**
* Drops any allocated memory.
*/
static void
sp_feDisplacementMap_release(SPObject *object)
{
if (((SPObjectClass *) feDisplacementMap_parent_class)->release)
((SPObjectClass *) feDisplacementMap_parent_class)->release(object);
}
static FilterDisplacementMapChannelSelector sp_feDisplacementMap_readChannelSelector(gchar const *value)
{
if (!value) return DISPLACEMENTMAP_CHANNEL_ALPHA;
switch (value[0]) {
case 'R':
return DISPLACEMENTMAP_CHANNEL_RED;
break;
case 'G':
return DISPLACEMENTMAP_CHANNEL_GREEN;
break;
case 'B':
return DISPLACEMENTMAP_CHANNEL_BLUE;
break;
case 'A':
return DISPLACEMENTMAP_CHANNEL_ALPHA;
break;
default:
// error
g_warning("Invalid attribute for Channel Selector. Valid modes are 'R', 'G', 'B' or 'A'");
break;
}
return DISPLACEMENTMAP_CHANNEL_ALPHA; //default is Alpha Channel
}
/**
* Sets a specific value in the SPFeDisplacementMap.
*/
static void
sp_feDisplacementMap_set(SPObject *object, unsigned int key, gchar const *value)
{
SPFeDisplacementMap *feDisplacementMap = SP_FEDISPLACEMENTMAP(object);
(void)feDisplacementMap;
int input;
double read_num;
FilterDisplacementMapChannelSelector read_selector;
switch(key) {
/*DEAL WITH SETTING ATTRIBUTES HERE*/
case SP_ATTR_XCHANNELSELECTOR:
read_selector = sp_feDisplacementMap_readChannelSelector(value);
if (read_selector != feDisplacementMap->xChannelSelector){
feDisplacementMap->xChannelSelector = read_selector;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_YCHANNELSELECTOR:
read_selector = sp_feDisplacementMap_readChannelSelector(value);
if (read_selector != feDisplacementMap->yChannelSelector){
feDisplacementMap->yChannelSelector = read_selector;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_SCALE:
read_num = helperfns_read_number(value);
if (read_num != feDisplacementMap->scale) {
feDisplacementMap->scale = read_num;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_IN2:
input = sp_filter_primitive_read_in(feDisplacementMap, value);
if (input != feDisplacementMap->in2) {
feDisplacementMap->in2 = input;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
default:
if (((SPObjectClass *) feDisplacementMap_parent_class)->set)
((SPObjectClass *) feDisplacementMap_parent_class)->set(object, key, value);
break;
}
}
/**
* Receives update notifications.
*/
static void
sp_feDisplacementMap_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 *) feDisplacementMap_parent_class)->update) {
((SPObjectClass *) feDisplacementMap_parent_class)->update(object, ctx, flags);
}
}
/**
* Writes its settings to an incoming repr object, if any.
*/
static Inkscape::XML::Node *
sp_feDisplacementMap_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
{
// Inkscape-only object, not copied during an "plain SVG" dump:
if (flags & SP_OBJECT_WRITE_EXT) {
if (repr) {
// is this sane?
//repr->mergeFrom(SP_OBJECT_REPR(object), "id");
} else {
repr = SP_OBJECT_REPR(object)->duplicate(doc);
}
}
if (((SPObjectClass *) feDisplacementMap_parent_class)->write) {
((SPObjectClass *) feDisplacementMap_parent_class)->write(object, doc, repr, flags);
}
return repr;
}
static void sp_feDisplacementMap_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) {
g_assert(primitive != NULL);
g_assert(filter != NULL);
SPFeDisplacementMap *sp_displacement_map = SP_FEDISPLACEMENTMAP(primitive);
int primitive_n = filter->add_primitive(NR::NR_FILTER_DISPLACEMENTMAP);
NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
NR::FilterDisplacementMap *nr_displacement_map = dynamic_cast<NR::FilterDisplacementMap*>(nr_primitive);
g_assert(nr_displacement_map != NULL);
sp_filter_primitive_renderer_common(primitive, nr_primitive);
nr_displacement_map->set_input(1, sp_displacement_map->in2);
nr_displacement_map->set_scale(sp_displacement_map->scale);
nr_displacement_map->set_channel_selector(0, sp_displacement_map->xChannelSelector);
nr_displacement_map->set_channel_selector(1, sp_displacement_map->yChannelSelector);
}
/*
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:encoding=utf-8:textwidth=99 :
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