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// SPDX-License-Identifier: GPL-2.0-or-later
/** \file
* SVG <fedistantlight> implementation.
*/
/*
* Authors:
* Hugo Rodrigues <haa.rodrigues@gmail.com>
* Niko Kiirala <niko@kiirala.com>
* Jean-Rene Reinhard <jr@komite.net>
* Abhishek Sharma
*
* Copyright (C) 2006,2007 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <glib.h>
// In same directory
#include "distantlight.h"
#include "diffuselighting.h"
#include "specularlighting.h"
#include "attributes.h"
#include "document.h"
#include "xml/repr.h"
SPFeDistantLight::SPFeDistantLight()
: SPObject(), azimuth(0), azimuth_set(FALSE), elevation(0), elevation_set(FALSE) {
}
SPFeDistantLight::~SPFeDistantLight() = default;
/**
* 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.
*/
void SPFeDistantLight::build(SPDocument *document, Inkscape::XML::Node *repr) {
SPObject::build(document, repr);
//Read values of key attributes from XML nodes into object.
this->readAttr(SPAttr::AZIMUTH);
this->readAttr(SPAttr::ELEVATION);
//is this necessary?
document->addResource("fedistantlight", this);
}
/**
* Drops any allocated memory.
*/
void SPFeDistantLight::release() {
if ( this->document ) {
// Unregister ourselves
this->document->removeResource("fedistantlight", this);
}
//TODO: release resources here
}
/**
* Sets a specific value in the SPFeDistantLight.
*/
void SPFeDistantLight::set(SPAttr key, gchar const *value) {
gchar *end_ptr;
switch (key) {
case SPAttr::AZIMUTH:
end_ptr =nullptr;
if (value) {
this->azimuth = g_ascii_strtod(value, &end_ptr);
if (end_ptr) {
this->azimuth_set = TRUE;
}
}
if (!value || !end_ptr) {
this->azimuth_set = FALSE;
this->azimuth = 0;
}
if (this->parent &&
(SP_IS_FEDIFFUSELIGHTING(this->parent) ||
SP_IS_FESPECULARLIGHTING(this->parent))) {
this->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SPAttr::ELEVATION:
end_ptr =nullptr;
if (value) {
this->elevation = g_ascii_strtod(value, &end_ptr);
if (end_ptr) {
this->elevation_set = TRUE;
}
}
if (!value || !end_ptr) {
this->elevation_set = FALSE;
this->elevation = 0;
}
if (this->parent &&
(SP_IS_FEDIFFUSELIGHTING(this->parent) ||
SP_IS_FESPECULARLIGHTING(this->parent))) {
this->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
default:
// See if any parents need this value.
SPObject::set(key, value);
break;
}
}
/**
* * Receives update notifications.
* */
void SPFeDistantLight::update(SPCtx *ctx, guint flags) {
if (flags & SP_OBJECT_MODIFIED_FLAG) {
/* do something to trigger redisplay, updates? */
this->readAttr(SPAttr::AZIMUTH);
this->readAttr(SPAttr::ELEVATION);
}
SPObject::update(ctx, flags);
}
/**
* Writes its settings to an incoming repr object, if any.
*/
Inkscape::XML::Node* SPFeDistantLight::write(Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags) {
if (!repr) {
repr = this->getRepr()->duplicate(doc);
}
if (this->azimuth_set) {
repr->setAttributeCssDouble("azimuth", this->azimuth);
}
if (this->elevation_set) {
repr->setAttributeCssDouble("elevation", this->elevation);
}
SPObject::write(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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