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// SPDX-License-Identifier: GPL-2.0-or-later
/**
* SVG <hkern> and <vkern> elements implementation
* W3C SVG 1.1 spec, page 476, section 20.7
*
* Authors:
* Felipe C. da S. Sanches <juca@members.fsf.org>
* Abhishek Sharma
*
* Copyright (C) 2008 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "xml/repr.h"
#include "attributes.h"
#include "sp-glyph-kerning.h"
#include "document.h"
#include <cstring>
SPGlyphKerning::SPGlyphKerning()
: SPObject()
//TODO: correct these values:
, u1(nullptr)
, g1(nullptr)
, u2(nullptr)
, g2(nullptr)
, k(0)
{
}
void SPGlyphKerning::build(SPDocument *document, Inkscape::XML::Node *repr)
{
SPObject::build(document, repr);
this->readAttr(SPAttr::U1);
this->readAttr(SPAttr::G1);
this->readAttr(SPAttr::U2);
this->readAttr(SPAttr::G2);
this->readAttr(SPAttr::K);
}
void SPGlyphKerning::release()
{
SPObject::release();
}
GlyphNames::GlyphNames(const gchar* value)
{
names = value ? g_strdup(value) : nullptr;
}
GlyphNames::~GlyphNames()
{
if (names) {
g_free(names);
}
}
bool GlyphNames::contains(const char* name)
{
if (!(this->names) || !name) {
return false;
}
std::istringstream is(this->names);
std::string str;
std::string s(name);
while (is >> str) {
if (str == s) {
return true;
}
}
return false;
}
void SPGlyphKerning::set(SPAttr key, const gchar *value)
{
switch (key) {
case SPAttr::U1:
{
if (this->u1) {
delete this->u1;
}
this->u1 = new UnicodeRange(value);
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;
}
case SPAttr::U2:
{
if (this->u2) {
delete this->u2;
}
this->u2 = new UnicodeRange(value);
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;
}
case SPAttr::G1:
{
if (this->g1) {
delete this->g1;
}
this->g1 = new GlyphNames(value);
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;
}
case SPAttr::G2:
{
if (this->g2) {
delete this->g2;
}
this->g2 = new GlyphNames(value);
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;
}
case SPAttr::K:
{
double number = value ? g_ascii_strtod(value, nullptr) : 0;
if (number != this->k){
this->k = number;
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
}
default:
{
SPObject::set(key, value);
break;
}
}
}
/**
* Receives update notifications.
*/
void SPGlyphKerning::update(SPCtx *ctx, guint flags)
{
if (flags & SP_OBJECT_MODIFIED_FLAG) {
/* do something to trigger redisplay, updates? */
this->readAttr(SPAttr::U1);
this->readAttr(SPAttr::U2);
this->readAttr(SPAttr::G2);
this->readAttr(SPAttr::K);
}
SPObject::update(ctx, flags);
}
#define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
Inkscape::XML::Node* SPGlyphKerning::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
{
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("svg:glyphkerning"); // fix this!
}
if (repr != this->getRepr()) {
// All the COPY_ATTR functions below use
// XML Tree directly, while they shouldn't.
COPY_ATTR(repr, this->getRepr(), "u1");
COPY_ATTR(repr, this->getRepr(), "g1");
COPY_ATTR(repr, this->getRepr(), "u2");
COPY_ATTR(repr, this->getRepr(), "g2");
COPY_ATTR(repr, this->getRepr(), "k");
}
SPObject::write(xml_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 :
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