/*
* SVG <text> and <tspan> implementation
*
* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
* bulia byak <buliabyak@users.sf.net>
* Jon A. Cruz <jon@joncruz.org>
* Abhishek Sharma
*
* Copyright (C) 1999-2002 Lauris Kaplinski
* Copyright (C) 2000-2001 Ximian, Inc.
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
/*
* fixme:
*
* These subcomponents should not be items, or alternately
* we have to invent set of flags to mark, whether standard
* attributes are applicable to given item (I even like this
* idea somewhat - Lauris)
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <cstring>
#include <string>
#include <glibmm/i18n.h>
#include <livarot/Path.h>
#include "svg/stringstream.h"
#include "attributes.h"
#include "sp-use-reference.h"
#include "sp-tspan.h"
#include "sp-tref.h"
#include "sp-textpath.h"
#include "text-editing.h"
#include "style.h"
#include "xml/repr.h"
#include "document.h"
#include "2geom/transforms.h"
/*#####################################################
# SPTSPAN
#####################################################*/
SPTSpan::SPTSpan() : SPItem() {
this->role = SP_TSPAN_ROLE_UNSPECIFIED;
}
SPTSpan::~SPTSpan() {
}
void SPTSpan::build(SPDocument *doc, Inkscape::XML::Node *repr) {
this->readAttr( "x" );
this->readAttr( "y" );
this->readAttr( "dx" );
this->readAttr( "dy" );
this->readAttr( "rotate" );
this->readAttr( "sodipodi:role" );
SPItem::build(doc, repr);
}
void SPTSpan::release() {
SPItem::release();
}
void SPTSpan::set(unsigned int key, const gchar* value) {
if (this->attributes.readSingleAttribute(key, value, style, &viewport)) {
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
} else {
switch (key) {
case SP_ATTR_SODIPODI_ROLE:
if (value && (!strcmp(value, "line") || !strcmp(value, "paragraph"))) {
this->role = SP_TSPAN_ROLE_LINE;
} else {
this->role = SP_TSPAN_ROLE_UNSPECIFIED;
}
break;
default:
SPItem::set(key, value);
break;
}
}
}
void SPTSpan::update(SPCtx *ctx, guint flags) {
unsigned childflags = flags;
if (flags & SP_OBJECT_MODIFIED_FLAG) {
childflags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
}
childflags &= SP_OBJECT_MODIFIED_CASCADE;
for ( SPObject *ochild = this->firstChild() ; ochild ; ochild = ochild->getNext() ) {
if ( flags || ( ochild->uflags & SP_OBJECT_MODIFIED_FLAG )) {
ochild->updateDisplay(ctx, childflags);
}
}
SPItem::update(ctx, flags);
if (flags & ( SP_OBJECT_STYLE_MODIFIED_FLAG |
SP_OBJECT_CHILD_MODIFIED_FLAG |
SP_TEXT_LAYOUT_MODIFIED_FLAG ) )
{
SPItemCtx const *ictx = reinterpret_cast<SPItemCtx const *>(ctx);
double const w = ictx->viewport.width();
double const h = ictx->viewport.height();
double const em = style->font_size.computed;
double const ex = 0.5 * em; // fixme: get x height from pango or libnrtype.
attributes.update( em, ex, w, h );
}
}
void SPTSpan::modified(unsigned int flags) {
// SPItem::onModified(flags);
if (flags & SP_OBJECT_MODIFIED_FLAG) {
flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
}
flags &= SP_OBJECT_MODIFIED_CASCADE;
for ( SPObject *ochild = this->firstChild() ; ochild ; ochild = ochild->getNext() ) {
if (flags || (ochild->mflags & SP_OBJECT_MODIFIED_FLAG)) {
ochild->emitModified(flags);
}
}
}
Geom::OptRect SPTSpan::bbox(Geom::Affine const &transform, SPItem::BBoxType type) const {
Geom::OptRect bbox;
// find out the ancestor text which holds our layout
SPObject const *parent_text = this;
while (parent_text && !SP_IS_TEXT(parent_text)) {
parent_text = parent_text->parent;
}
if (parent_text == NULL) {
return bbox;
}
// get the bbox of our portion of the layout
bbox = SP_TEXT(parent_text)->layout.bounds(transform, sp_text_get_length_upto(parent_text, this), sp_text_get_length_upto(this, NULL) - 1);
if (!bbox) {
return bbox;
}
// Add stroke width
// FIXME this code is incorrect
if (type == SPItem::VISUAL_BBOX && !this->style->stroke.isNone()) {
double scale = transform.descrim();
bbox->expandBy(0.5 * this->style->stroke_width.computed * scale);
}
return bbox;
}
Inkscape::XML::Node* SPTSpan::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("svg:tspan");
}
this->attributes.writeTo(repr);
if ( flags&SP_OBJECT_WRITE_BUILD ) {
GSList *l = NULL;
for (SPObject* child = this->firstChild() ; child ; child = child->getNext() ) {
Inkscape::XML::Node* c_repr=NULL;
if ( SP_IS_TSPAN(child) || SP_IS_TREF(child) ) {
c_repr = child->updateRepr(xml_doc, NULL, flags);
} else if ( SP_IS_TEXTPATH(child) ) {
//c_repr = child->updateRepr(xml_doc, NULL, flags); // shouldn't happen
} else if ( SP_IS_STRING(child) ) {
c_repr = xml_doc->createTextNode(SP_STRING(child)->string.c_str());
}
if ( c_repr ) {
l = g_slist_prepend(l, c_repr);
}
}
while ( l ) {
repr->addChild((Inkscape::XML::Node *) l->data, NULL);
Inkscape::GC::release((Inkscape::XML::Node *) l->data);
l = g_slist_remove(l, l->data);
}
} else {
for (SPObject* child = this->firstChild() ; child ; child = child->getNext() ) {
if ( SP_IS_TSPAN(child) || SP_IS_TREF(child) ) {
child->updateRepr(flags);
} else if ( SP_IS_TEXTPATH(child) ) {
//c_repr = child->updateRepr(xml_doc, NULL, flags); // shouldn't happen
} else if ( SP_IS_STRING(child) ) {
child->getRepr()->setContent(SP_STRING(child)->string.c_str());
}
}
}
SPItem::write(xml_doc, repr, flags);
return repr;
}
const char* SPTSpan::displayName() const {
return _("Text Span");
}
/*#####################################################
# SPTEXTPATH
#####################################################*/
void refresh_textpath_source(SPTextPath* offset);
SPTextPath::SPTextPath() : SPItem() {
this->startOffset._set = false;
this->originalPath = NULL;
this->isUpdating=false;
// set up the uri reference
this->sourcePath = new SPUsePath(this);
this->sourcePath->user_unlink = sp_textpath_to_text;
}
SPTextPath::~SPTextPath() {
delete this->sourcePath;
}
void SPTextPath::build(SPDocument *doc, Inkscape::XML::Node *repr) {
this->readAttr( "x" );
this->readAttr( "y" );
this->readAttr( "dx" );
this->readAttr( "dy" );
this->readAttr( "rotate" );
this->readAttr( "startOffset" );
this->readAttr( "xlink:href" );
bool no_content = true;
for (Inkscape::XML::Node* rch = repr->firstChild() ; rch != NULL; rch = rch->next()) {
if ( rch->type() == Inkscape::XML::TEXT_NODE )
{
no_content = false;
break;
}
}
if ( no_content ) {
Inkscape::XML::Document *xml_doc = doc->getReprDoc();
Inkscape::XML::Node* rch = xml_doc->createTextNode("");
repr->addChild(rch, NULL);
}
SPItem::build(doc, repr);
}
void SPTextPath::release() {
//this->attributes.~TextTagAttributes();
if (this->originalPath) {
delete this->originalPath;
}
this->originalPath = NULL;
SPItem::release();
}
void SPTextPath::set(unsigned int key, const gchar* value) {
if (this->attributes.readSingleAttribute(key, value, style, &viewport)) {
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
} else {
switch (key) {
case SP_ATTR_XLINK_HREF:
this->sourcePath->link((char*)value);
break;
case SP_ATTR_STARTOFFSET:
this->startOffset.readOrUnset(value);
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
break;
default:
SPItem::set(key, value);
break;
}
}
}
void SPTextPath::update(SPCtx *ctx, guint flags) {
this->isUpdating = true;
if ( this->sourcePath->sourceDirty ) {
refresh_textpath_source(this);
}
this->isUpdating = false;
SPItem::update(ctx, flags);
if (flags & SP_OBJECT_MODIFIED_FLAG) {
flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
}
flags &= SP_OBJECT_MODIFIED_CASCADE;
for ( SPObject *ochild = this->firstChild() ; ochild ; ochild = ochild->getNext() ) {
if ( flags || ( ochild->uflags & SP_OBJECT_MODIFIED_FLAG )) {
ochild->updateDisplay(ctx, flags);
}
}
if (flags & ( SP_OBJECT_STYLE_MODIFIED_FLAG |
SP_OBJECT_CHILD_MODIFIED_FLAG |
SP_TEXT_LAYOUT_MODIFIED_FLAG ) )
{
SPItemCtx const *ictx = reinterpret_cast<SPItemCtx const *>(ctx);
double const w = ictx->viewport.width();
double const h = ictx->viewport.height();
double const em = style->font_size.computed;
double const ex = 0.5 * em; // fixme: get x height from pango or libnrtype.
attributes.update( em, ex, w, h );
}
}
void refresh_textpath_source(SPTextPath* tp)
{
if ( tp == NULL ) {
return;
}
tp->sourcePath->refresh_source();
tp->sourcePath->sourceDirty=false;
// finalisons
if ( tp->sourcePath->originalPath ) {
if (tp->originalPath) {
delete tp->originalPath;
}
tp->originalPath = NULL;
tp->originalPath = new Path;
tp->originalPath->Copy(tp->sourcePath->originalPath);
tp->originalPath->ConvertWithBackData(0.01);
}
}
void SPTextPath::modified(unsigned int flags) {
// SPItem::onModified(flags);
if (flags & SP_OBJECT_MODIFIED_FLAG) {
flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
}
flags &= SP_OBJECT_MODIFIED_CASCADE;
for ( SPObject *ochild = this->firstChild() ; ochild ; ochild = ochild->getNext() ) {
if (flags || (ochild->mflags & SP_OBJECT_MODIFIED_FLAG)) {
ochild->emitModified(flags);
}
}
}
Inkscape::XML::Node* SPTextPath::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("svg:textPath");
}
this->attributes.writeTo(repr);
if (this->startOffset._set) {
if (this->startOffset.unit == SVGLength::PERCENT) {
Inkscape::SVGOStringStream os;
os << (this->startOffset.computed * 100.0) << "%";
this->getRepr()->setAttribute("startOffset", os.str().c_str());
} else {
/* FIXME: This logic looks rather undesirable if e.g. startOffset is to be
in ems. */
sp_repr_set_svg_double(repr, "startOffset", this->startOffset.computed);
}
}
if ( this->sourcePath->sourceHref ) {
repr->setAttribute("xlink:href", this->sourcePath->sourceHref);
}
if ( flags & SP_OBJECT_WRITE_BUILD ) {
GSList *l = NULL;
for (SPObject* child = this->firstChild() ; child ; child = child->getNext() ) {
Inkscape::XML::Node* c_repr=NULL;
if ( SP_IS_TSPAN(child) || SP_IS_TREF(child) ) {
c_repr = child->updateRepr(xml_doc, NULL, flags);
} else if ( SP_IS_TEXTPATH(child) ) {
//c_repr = child->updateRepr(xml_doc, NULL, flags); // shouldn't happen
} else if ( SP_IS_STRING(child) ) {
c_repr = xml_doc->createTextNode(SP_STRING(child)->string.c_str());
}
if ( c_repr ) {
l = g_slist_prepend(l, c_repr);
}
}
while ( l ) {
repr->addChild((Inkscape::XML::Node *) l->data, NULL);
Inkscape::GC::release((Inkscape::XML::Node *) l->data);
l = g_slist_remove(l, l->data);
}
} else {
for (SPObject* child = this->firstChild() ; child ; child = child->getNext() ) {
if ( SP_IS_TSPAN(child) || SP_IS_TREF(child) ) {
child->updateRepr(flags);
} else if ( SP_IS_TEXTPATH(child) ) {
//c_repr = child->updateRepr(xml_doc, NULL, flags); // shouldn't happen
} else if ( SP_IS_STRING(child) ) {
child->getRepr()->setContent(SP_STRING(child)->string.c_str());
}
}
}
SPItem::write(xml_doc, repr, flags);
return repr;
}
SPItem *sp_textpath_get_path_item(SPTextPath *tp)
{
if (tp && tp->sourcePath) {
SPItem *refobj = tp->sourcePath->getObject();
if (SP_IS_ITEM(refobj)) {
return refobj;
}
}
return NULL;
}
void sp_textpath_to_text(SPObject *tp)
{
SPObject *text = tp->parent;
Geom::OptRect bbox = SP_ITEM(text)->geometricBounds(SP_ITEM(text)->i2doc_affine());
if (!bbox) {
return;
}
Geom::Point xy = bbox->min();
xy *= tp->document->getDocumentScale().inverse(); // Convert to user-units.
// make a list of textpath children
GSList *tp_reprs = NULL;
for (SPObject *o = tp->firstChild() ; o != NULL; o = o->next) {
tp_reprs = g_slist_prepend(tp_reprs, o->getRepr());
}
for ( GSList *i = tp_reprs ; i ; i = i->next ) {
// make a copy of each textpath child
Inkscape::XML::Node *copy = ((Inkscape::XML::Node *) i->data)->duplicate(text->getRepr()->document());
// remove the old repr from under textpath
tp->getRepr()->removeChild((Inkscape::XML::Node *) i->data);
// put its copy under text
text->getRepr()->addChild(copy, NULL); // fixme: copy id
}
//remove textpath
tp->deleteObject();
g_slist_free(tp_reprs);
// set x/y on text (to be near where it was when on path)
/* fixme: Yuck, is this really the right test? */
if (xy[Geom::X] != 1e18 && xy[Geom::Y] != 1e18) {
sp_repr_set_svg_double(text->getRepr(), "x", xy[Geom::X]);
sp_repr_set_svg_double(text->getRepr(), "y", xy[Geom::Y]);
}
}
/*
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 :