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// SPDX-License-Identifier: GPL-2.0-or-later
/** \file
* SVG <feColorMatrix> implementation.
*
*/
/*
* Authors:
* Felipe Sanches <juca@members.fsf.org>
* hugo Rodrigues <haa.rodrigues@gmail.com>
* Abhishek Sharma
*
* Copyright (C) 2007 Felipe C. da S. Sanches
* Copyright (C) 2006 Hugo Rodrigues
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <cstring>
#include "attributes.h"
#include "svg/svg.h"
#include "colormatrix.h"
#include "xml/repr.h"
#include "helper-fns.h"
#include "display/nr-filter.h"
SPFeColorMatrix::SPFeColorMatrix()
: SPFilterPrimitive()
{
}
SPFeColorMatrix::~SPFeColorMatrix() = default;
/**
* Reads the Inkscape::XML::Node, and initializes SPFeColorMatrix 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 SPFeColorMatrix::build(SPDocument *document, Inkscape::XML::Node *repr) {
SPFilterPrimitive::build(document, repr);
/*LOAD ATTRIBUTES FROM REPR HERE*/
this->readAttr(SPAttr::TYPE);
this->readAttr(SPAttr::VALUES);
}
/**
* Drops any allocated memory.
*/
void SPFeColorMatrix::release() {
SPFilterPrimitive::release();
}
static Inkscape::Filters::FilterColorMatrixType sp_feColorMatrix_read_type(gchar const *value){
if (!value) {
return Inkscape::Filters::COLORMATRIX_MATRIX; //matrix is default
}
switch(value[0]){
case 'm':
if (strcmp(value, "matrix") == 0) return Inkscape::Filters::COLORMATRIX_MATRIX;
break;
case 's':
if (strcmp(value, "saturate") == 0) return Inkscape::Filters::COLORMATRIX_SATURATE;
break;
case 'h':
if (strcmp(value, "hueRotate") == 0) return Inkscape::Filters::COLORMATRIX_HUEROTATE;
break;
case 'l':
if (strcmp(value, "luminanceToAlpha") == 0) return Inkscape::Filters::COLORMATRIX_LUMINANCETOALPHA;
break;
}
return Inkscape::Filters::COLORMATRIX_MATRIX; //matrix is default
}
/**
* Sets a specific value in the SPFeColorMatrix.
*/
void SPFeColorMatrix::set(SPAttr key, gchar const *str) {
Inkscape::Filters::FilterColorMatrixType read_type;
/*DEAL WITH SETTING ATTRIBUTES HERE*/
switch(key) {
case SPAttr::TYPE:
read_type = sp_feColorMatrix_read_type(str);
if (this->type != read_type){
this->type = read_type;
// Set the default value of "value" (this may happen if the attribute "Type" is changed interactively).
if (!value_set) {
value = 0;
if (type == Inkscape::Filters::COLORMATRIX_SATURATE) {
value = 1;
}
}
this->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
case SPAttr::VALUES:
if (str) {
this->values = helperfns_read_vector(str);
this->value = helperfns_read_number(str, HELPERFNS_NO_WARNING);
value_set = true;
} else {
// Set defaults
switch (type) {
case Inkscape::Filters::COLORMATRIX_MATRIX:
values = {1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0 };
break;
case Inkscape::Filters::COLORMATRIX_SATURATE:
// Default value for saturate is 1.0 ("values" not used).
value = 1.0;
break;
case Inkscape::Filters::COLORMATRIX_HUEROTATE:
value = 0.0;
break;
case Inkscape::Filters::COLORMATRIX_LUMINANCETOALPHA:
// value, values not used.
break;
}
value_set = false;
}
this->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;
default:
SPFilterPrimitive::set(key, str);
break;
}
}
/**
* Receives update notifications.
*/
void SPFeColorMatrix::update(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? */
}
SPFilterPrimitive::update(ctx, flags);
}
/**
* Writes its settings to an incoming repr object, if any.
*/
Inkscape::XML::Node* SPFeColorMatrix::write(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 = this->getRepr()->duplicate(doc);
}
SPFilterPrimitive::write(doc, repr, flags);
return repr;
}
void SPFeColorMatrix::build_renderer(Inkscape::Filters::Filter* filter) {
g_assert(filter != nullptr);
int primitive_n = filter->add_primitive(Inkscape::Filters::NR_FILTER_COLORMATRIX);
Inkscape::Filters::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
Inkscape::Filters::FilterColorMatrix *nr_colormatrix = dynamic_cast<Inkscape::Filters::FilterColorMatrix*>(nr_primitive);
g_assert(nr_colormatrix != nullptr);
this->renderer_common(nr_primitive);
nr_colormatrix->set_type(this->type);
nr_colormatrix->set_value(this->value);
nr_colormatrix->set_values(this->values);
}
/*
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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