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/** \file
* SVG <funcR>, <funcG>, <funcB> and <funcA> implementations.
*/
/*
* Authors:
* Hugo Rodrigues <haa.rodrigues@gmail.com>
* Niko Kiirala <niko@kiirala.com>
* Felipe Corrêa da Silva Sanches <juca@members.fsf.org>
* Abhishek Sharma
*
* Copyright (C) 2006, 2007, 2008 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include "attributes.h"
#include "document.h"
#include "componenttransfer.h"
#include "componenttransfer-funcnode.h"
#include "display/nr-filter-component-transfer.h"
#include "xml/repr.h"
#include "helper-fns.h"
#define SP_MACROS_SILENT
#include "macros.h"
/* FeFuncNode class */
static void sp_fefuncnode_class_init(SPFeFuncNodeClass *klass);
static void sp_fefuncnode_init(SPFeFuncNode *fefuncnode);
static void sp_fefuncnode_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
static void sp_fefuncnode_release(SPObject *object);
static void sp_fefuncnode_set(SPObject *object, unsigned int key, gchar const *value);
static void sp_fefuncnode_update(SPObject *object, SPCtx *ctx, guint flags);
static Inkscape::XML::Node *sp_fefuncnode_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
static SPObjectClass *feFuncNode_parent_class;
GType
sp_fefuncR_get_type()
{
static GType fefuncnode_type = 0;
if (!fefuncnode_type) {
GTypeInfo fefuncnode_info = {
sizeof(SPFeFuncNodeClass),
NULL, NULL,
(GClassInitFunc) sp_fefuncnode_class_init,
NULL, NULL,
sizeof(SPFeFuncNode),
16,
(GInstanceInitFunc) sp_fefuncnode_init,
NULL, /* value_table */
};
fefuncnode_type = g_type_register_static(SP_TYPE_OBJECT, "SPFeFuncR", &fefuncnode_info, (GTypeFlags)0);
}
return fefuncnode_type;
}
GType
sp_fefuncG_get_type()
{
static GType fefuncnode_type = 0;
if (!fefuncnode_type) {
GTypeInfo fefuncnode_info = {
sizeof(SPFeFuncNodeClass),
NULL, NULL,
(GClassInitFunc) sp_fefuncnode_class_init,
NULL, NULL,
sizeof(SPFeFuncNode),
16,
(GInstanceInitFunc) sp_fefuncnode_init,
NULL, /* value_table */
};
fefuncnode_type = g_type_register_static(SP_TYPE_OBJECT, "SPFeFuncG", &fefuncnode_info, (GTypeFlags)0);
}
return fefuncnode_type;
}
GType
sp_fefuncB_get_type()
{
static GType fefuncnode_type = 0;
if (!fefuncnode_type) {
GTypeInfo fefuncnode_info = {
sizeof(SPFeFuncNodeClass),
NULL, NULL,
(GClassInitFunc) sp_fefuncnode_class_init,
NULL, NULL,
sizeof(SPFeFuncNode),
16,
(GInstanceInitFunc) sp_fefuncnode_init,
NULL, /* value_table */
};
fefuncnode_type = g_type_register_static(SP_TYPE_OBJECT, "SPFeFuncB", &fefuncnode_info, (GTypeFlags)0);
}
return fefuncnode_type;
}
GType
sp_fefuncA_get_type()
{
static GType fefuncnode_type = 0;
if (!fefuncnode_type) {
GTypeInfo fefuncnode_info = {
sizeof(SPFeFuncNodeClass),
NULL, NULL,
(GClassInitFunc) sp_fefuncnode_class_init,
NULL, NULL,
sizeof(SPFeFuncNode),
16,
(GInstanceInitFunc) sp_fefuncnode_init,
NULL, /* value_table */
};
fefuncnode_type = g_type_register_static(SP_TYPE_OBJECT, "SPFeFuncA", &fefuncnode_info, (GTypeFlags)0);
}
return fefuncnode_type;
}
static void
sp_fefuncnode_class_init(SPFeFuncNodeClass *klass)
{
SPObjectClass *sp_object_class = (SPObjectClass *)klass;
feFuncNode_parent_class = (SPObjectClass*)g_type_class_peek_parent(klass);
sp_object_class->build = sp_fefuncnode_build;
sp_object_class->release = sp_fefuncnode_release;
sp_object_class->write = sp_fefuncnode_write;
sp_object_class->set = sp_fefuncnode_set;
sp_object_class->update = sp_fefuncnode_update;
}
static void
sp_fefuncnode_init(SPFeFuncNode *fefuncnode)
{
fefuncnode->type = Inkscape::Filters::COMPONENTTRANSFER_TYPE_IDENTITY;
//fefuncnode->tableValues = NULL;
fefuncnode->slope = 1;
fefuncnode->intercept = 0;
fefuncnode->amplitude = 1;
fefuncnode->exponent = 1;
fefuncnode->offset = 0;
}
/**
* Reads the Inkscape::XML::Node, and initializes SPDistantLight 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_fefuncnode_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
{
if (((SPObjectClass *) feFuncNode_parent_class)->build) {
((SPObjectClass *) feFuncNode_parent_class)->build(object, document, repr);
}
//Read values of key attributes from XML nodes into object.
object->readAttr( "type" );
object->readAttr( "tableValues" );
object->readAttr( "slope" );
object->readAttr( "intercept" );
object->readAttr( "amplitude" );
object->readAttr( "exponent" );
object->readAttr( "offset" );
//is this necessary?
document->addResource("fefuncnode", object); //maybe feFuncR, fefuncG, feFuncB and fefuncA ?
}
/**
* Drops any allocated memory.
*/
static void sp_fefuncnode_release(SPObject *object)
{
//SPFeFuncNode *fefuncnode = SP_FEFUNCNODE(object);
if ( object->document ) {
// Unregister ourselves
object->document->removeResource("fefuncnode", object);
}
//TODO: release resources here
}
static Inkscape::Filters::FilterComponentTransferType sp_feComponenttransfer_read_type(gchar const *value){
if (!value) return Inkscape::Filters::COMPONENTTRANSFER_TYPE_ERROR; //type attribute is REQUIRED.
switch(value[0]){
case 'i':
if (strncmp(value, "identity", 8) == 0) return Inkscape::Filters::COMPONENTTRANSFER_TYPE_IDENTITY;
break;
case 't':
if (strncmp(value, "table", 5) == 0) return Inkscape::Filters::COMPONENTTRANSFER_TYPE_TABLE;
break;
case 'd':
if (strncmp(value, "discrete", 8) == 0) return Inkscape::Filters::COMPONENTTRANSFER_TYPE_DISCRETE;
break;
case 'l':
if (strncmp(value, "linear", 6) == 0) return Inkscape::Filters::COMPONENTTRANSFER_TYPE_LINEAR;
break;
case 'g':
if (strncmp(value, "gamma", 5) == 0) return Inkscape::Filters::COMPONENTTRANSFER_TYPE_GAMMA;
break;
}
return Inkscape::Filters::COMPONENTTRANSFER_TYPE_ERROR; //type attribute is REQUIRED.
}
/**
* Sets a specific value in the SPFeFuncNode.
*/
static void
sp_fefuncnode_set(SPObject *object, unsigned int key, gchar const *value)
{
SPFeFuncNode *feFuncNode = SP_FEFUNCNODE(object);
Inkscape::Filters::FilterComponentTransferType type;
double read_num;
switch(key) {
case SP_ATTR_TYPE:
type = sp_feComponenttransfer_read_type(value);
if(type != feFuncNode->type) {
feFuncNode->type = type;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_TABLEVALUES:
if (value){
feFuncNode->tableValues = helperfns_read_vector(value);
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_SLOPE:
read_num = value ? helperfns_read_number(value) : 1;
if (read_num != feFuncNode->slope) {
feFuncNode->slope = read_num;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_INTERCEPT:
read_num = value ? helperfns_read_number(value) : 0;
if (read_num != feFuncNode->intercept) {
feFuncNode->intercept = read_num;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_AMPLITUDE:
read_num = value ? helperfns_read_number(value) : 1;
if (read_num != feFuncNode->amplitude) {
feFuncNode->amplitude = read_num;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_EXPONENT:
read_num = value ? helperfns_read_number(value) : 1;
if (read_num != feFuncNode->exponent) {
feFuncNode->exponent = read_num;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SP_ATTR_OFFSET:
read_num = value ? helperfns_read_number(value) : 0;
if (read_num != feFuncNode->offset) {
feFuncNode->offset = read_num;
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
default:
if (((SPObjectClass *) feFuncNode_parent_class)->set)
((SPObjectClass *) feFuncNode_parent_class)->set(object, key, value);
break;
}
}
/**
* * Receives update notifications.
* */
static void
sp_fefuncnode_update(SPObject *object, SPCtx *ctx, guint flags)
{
SPFeFuncNode *feFuncNode = SP_FEFUNCNODE(object);
(void)feFuncNode;
if (flags & SP_OBJECT_MODIFIED_FLAG) {
/* do something to trigger redisplay, updates? */
//TODO
//object->readAttr( "azimuth" );
//object->readAttr( "elevation" );
}
if (((SPObjectClass *) feFuncNode_parent_class)->update) {
((SPObjectClass *) feFuncNode_parent_class)->update(object, ctx, flags);
}
}
/**
* Writes its settings to an incoming repr object, if any.
*/
static Inkscape::XML::Node *
sp_fefuncnode_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
{
SPFeFuncNode *fefuncnode = SP_FEFUNCNODE(object);
if (!repr) {
repr = object->getRepr()->duplicate(doc);
}
(void)fefuncnode;
/*
TODO: I'm not sure what to do here...
if (fefuncnode->azimuth_set)
sp_repr_set_css_double(repr, "azimuth", fefuncnode->azimuth);
if (fefuncnode->elevation_set)
sp_repr_set_css_double(repr, "elevation", fefuncnode->elevation);*/
if (((SPObjectClass *) feFuncNode_parent_class)->write) {
((SPObjectClass *) feFuncNode_parent_class)->write(object, doc, repr, flags);
}
return repr;
}
/*
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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