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// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* @gradient stop class.
*/
/* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
* bulia byak
* Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
* Jon A. Cruz <jon@joncruz.org>
*
* Copyright (C) 1999,2005 authors
* Copyright (C) 2010 Jon A. Cruz
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "sp-stop.h"
#include "style.h"
#include "attributes.h"
#include "streq.h"
#include "svg/svg.h"
#include "svg/svg-color.h"
#include "svg/css-ostringstream.h"
SPStop::SPStop() : SPObject() {
this->path_string = nullptr;
this->offset = 0.0;
}
SPStop::~SPStop() = default;
void SPStop::build(SPDocument* doc, Inkscape::XML::Node* repr) {
this->readAttr(SPAttr::STYLE);
this->readAttr(SPAttr::OFFSET);
this->readAttr(SPAttr::STOP_PATH); // For mesh
SPObject::build(doc, repr);
}
/**
* Virtual build: set stop attributes from its associated XML node.
*/
void SPStop::set(SPAttr key, const gchar* value) {
switch (key) {
case SPAttr::OFFSET: {
this->offset = sp_svg_read_percentage(value, 0.0);
this->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
break;
}
case SPAttr::STOP_PATH: {
if (value) {
this->path_string = new Glib::ustring( value );
//Geom::PathVector pv = sp_svg_read_pathv(value);
//SPCurve *curve = new SPCurve(pv);
//if( curve ) {
// std::cout << "Got Curve" << std::endl;
//curve->unref();
//}
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
}
default: {
if (SP_ATTRIBUTE_IS_CSS(key)) {
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
} else {
SPObject::set(key, value);
}
// This makes sure that the parent sp-gradient is updated.
this->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
break;
}
}
}
void SPStop::modified(guint flags)
{
if (parent && !(flags & SP_OBJECT_PARENT_MODIFIED_FLAG)) {
parent->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
}
}
/**
* Virtual set: set attribute to value.
*/
Inkscape::XML::Node* SPStop::write(Inkscape::XML::Document* xml_doc, Inkscape::XML::Node* repr, guint flags) {
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("svg:stop");
}
SPObject::write(xml_doc, repr, flags);
repr->setAttributeCssDouble("offset", this->offset);
/* strictly speaking, offset an SVG <number> rather than a CSS one, but exponents make no sense
* for offset proportions. */
return repr;
}
/**
* Virtual write: write object attributes to repr.
*/
// A stop might have some non-stop siblings
SPStop* SPStop::getNextStop() {
SPStop *result = nullptr;
for (SPObject* obj = getNext(); obj && !result; obj = obj->getNext()) {
if (SP_IS_STOP(obj)) {
result = SP_STOP(obj);
}
}
return result;
}
SPStop* SPStop::getPrevStop() {
SPStop *result = nullptr;
for (SPObject* obj = getPrev(); obj; obj = obj->getPrev()) {
// The closest previous SPObject that is an SPStop *should* be ourself.
if (SP_IS_STOP(obj)) {
SPStop* stop = SP_STOP(obj);
// Sanity check to ensure we have a proper sibling structure.
if (stop->getNextStop() == this) {
result = stop;
} else {
g_warning("SPStop previous/next relationship broken");
}
break;
}
}
return result;
}
SPColor SPStop::getColor() const
{
if (style->stop_color.currentcolor) {
return style->color.value.color;
}
return style->stop_color.value.color;
}
gfloat SPStop::getOpacity() const
{
return SP_SCALE24_TO_FLOAT(style->stop_opacity.value);
}
/**
* Return stop's color as 32bit value.
*/
guint32 SPStop::get_rgba32() const
{
return getColor().toRGBA32(getOpacity());
}
/*
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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