#include <string>

#include <2geom/transforms.h>

#include "attributes.h"

#include "print.h"

#include "document.h"

#include "inkscape-version.h"

#include "sp-defs.h"

#include "sp-root.h"

#include "display/drawing-group.h"

#include "svg/stringstream.h"

#include "svg/svg.h"

#include "xml/repr.h"

#include "util/units.h"

SPRoot::SPRoot() : SPGroup(), SPViewBox()

{

this->onload = NULL;

static Inkscape::Version const zero_version(0, 0);

sp_version_from_string(SVG_VERSION, &this->original.svg);

this->version.svg = zero_version;

this->original.svg = zero_version;

this->version.inkscape = zero_version;

this->original.inkscape = zero_version;

this->x.unset(SVGLength::PERCENT, 0.0, 0.0); // Ignored for root SVG element

this->y.unset(SVGLength::PERCENT, 0.0, 0.0);

this->width.unset(SVGLength::PERCENT, 1.0, 1.0);

this->height.unset(SVGLength::PERCENT, 1.0, 1.0);

this->defs = NULL;

}

SPRoot::~SPRoot()

{

}

void SPRoot::build(SPDocument *document, Inkscape::XML::Node *repr)

{

//XML Tree being used directly here while it shouldn't be.

if (!this->getRepr()->attribute("version")) {

repr->setAttribute("version", SVG_VERSION);

}

this->readAttr("version");

this->readAttr("inkscape:version");

/* It is important to parse these here, so objects will have viewport build-time */

this->readAttr("x");

this->readAttr("y");

this->readAttr("width");

this->readAttr("height");

this->readAttr("viewBox");

this->readAttr("preserveAspectRatio");

this->readAttr("onload");

SPGroup::build(document, repr);

// Search for first <defs> node

for (SPObject *o = this->firstChild() ; o ; o = o->getNext()) {

if (SP_IS_DEFS(o)) {

this->defs = SP_DEFS(o);

break;

}

}

// clear transform, if any was read in - SVG does not allow transform= on <svg>

SP_ITEM(this)->transform = Geom::identity();

}

void SPRoot::release()

{

this->defs = NULL;

SPGroup::release();

}

void SPRoot::set(unsigned int key, const gchar *value)

{

switch (key) {

case SP_ATTR_VERSION:

if (!sp_version_from_string(value, &this->version.svg)) {

this->version.svg = this->original.svg;

}

break;

case SP_ATTR_INKSCAPE_VERSION:

if (!sp_version_from_string(value, &this->version.inkscape)) {

this->version.inkscape = this->original.inkscape;

}

break;

case SP_ATTR_X:

/* Valid for non-root SVG elements; ex, em not handled correctly. */

if (!this->x.read(value)) {

this->x.unset(SVGLength::PERCENT, 0.0, 0.0);

}

/* fixme: I am almost sure these do not require viewport flag (Lauris) */

this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);

break;

case SP_ATTR_Y:

/* Valid for non-root SVG elements; ex, em not handled correctly. */

if (!this->y.read(value)) {

this->y.unset(SVGLength::PERCENT, 0.0, 0.0);

}

/* fixme: I am almost sure these do not require viewport flag (Lauris) */

this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);

break;

case SP_ATTR_WIDTH:

if (!this->width.read(value) || !(this->width.computed > 0.0)) {

this->width.unset(SVGLength::PERCENT, 1.0, 1.0);

}

this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);

break;

case SP_ATTR_HEIGHT:

if (!this->height.read(value) || !(this->height.computed > 0.0)) {

this->height.unset(SVGLength::PERCENT, 1.0, 1.0);

}

this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);

break;

case SP_ATTR_VIEWBOX:

set_viewBox( value );

this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);

break;

case SP_ATTR_PRESERVEASPECTRATIO:

set_preserveAspectRatio( value );

this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);

break;

case SP_ATTR_ONLOAD:

this->onload = (char *) value;

break;

default:

/* Pass the set event to the parent */

SPGroup::set(key, value);

break;

}

}

void SPRoot::child_added(Inkscape::XML::Node *child, Inkscape::XML::Node *ref)

{

SPGroup::child_added(child, ref);

SPObject *co = this->document->getObjectByRepr(child);

// NOTE: some XML nodes do not have corresponding SP objects,

// for instance inkscape:clipboard used in the clipboard code.

// See LP bug #1227827

//g_assert (co != NULL || !strcmp("comment", child->name())); // comment repr node has no object

if (co && SP_IS_DEFS(co)) {

// We search for first <defs> node - it is not beautiful, but works

for (SPObject *c = this->firstChild() ; c ; c = c->getNext()) {

if (SP_IS_DEFS(c)) {

this->defs = SP_DEFS(c);

break;

}

}

}

}

void SPRoot::remove_child(Inkscape::XML::Node *child)

{

if (this->defs && (this->defs->getRepr() == child)) {

SPObject *iter = 0;

// We search for first remaining <defs> node - it is not beautiful, but works

for (iter = this->firstChild() ; iter ; iter = iter->getNext()) {

if (SP_IS_DEFS(iter) && (SPDefs *)iter != this->defs) {

this->defs = (SPDefs *)iter;

break;

}

}

if (!iter) {

/* we should probably create a new <defs> here? */

this->defs = NULL;

}

}

SPGroup::remove_child(child);

}

void SPRoot::update(SPCtx *ctx, guint flags)

{

SPItemCtx const *ictx = (SPItemCtx const *) ctx;

if( !this->parent ) {

/*

if( this->viewBox_set ) {

if( this->width._set ) {

// Check if this is necessary

if (this->width.unit == SVGLength::PERCENT) {

this->width.computed = this->width.value * this->viewBox.width();

}

} else {

this->width.set( SVGLength::PX, this->viewBox.width(), this->viewBox.width() );

}

if( this->height._set ) {

if (this->height.unit == SVGLength::PERCENT) {

this->height.computed = this->height.value * this->viewBox.height();

}

} else {

this->height.set(SVGLength::PX, this->viewBox.height(), this->viewBox.height() );

}

} else {

if( !this->width._set ) {

this->width.set( SVGLength::PX, 100, 100 ); // Random default

}

if( !this->height._set ) {

this->height.set( SVGLength::PX, 100, 100 ); // Random default

}

}

// Ignore x, y values for root element

this->x.unset(SVGLength::PERCENT, 0.0, 0.0);

this->y.unset(SVGLength::PERCENT, 0.0, 0.0);

}

// Calculate x, y, width, height from parent/initial viewport

if (this->x.unit == SVGLength::PERCENT) {

this->x.computed = this->x.value * ictx->viewport.width();

}

if (this->y.unit == SVGLength::PERCENT) {

this->y.computed = this->y.value * ictx->viewport.height();

}

if (this->width.unit == SVGLength::PERCENT) {

this->width.computed = this->width.value * ictx->viewport.width();

}

if (this->height.unit == SVGLength::PERCENT) {

this->height.computed = this->height.value * ictx->viewport.height();

}

// std::cout << "SPRoot::update: final:"

// << " x: " << x.computed

// << " y: " << y.computed

// << " width: " << width.computed

// << " height: " << height.computed << std::endl;

// Calculate new viewport

SPItemCtx rctx = *ictx;

rctx.viewport = Geom::Rect::from_xywh( this->x.computed, this->y.computed,

this->width.computed, this->height.computed );

rctx = get_rctx( &rctx, Inkscape::Util::Quantity::convert(1, this->document->getDisplayUnit(), "px") );

/* And invoke parent method */

SPGroup::update((SPCtx *) &rctx, flags);

/* As last step set additional transform of drawing group */

for (SPItemView *v = this->display; v != NULL; v = v->next) {

Inkscape::DrawingGroup *g = dynamic_cast<Inkscape::DrawingGroup *>(v->arenaitem);

g->setChildTransform(this->c2p);

}

}

void SPRoot::modified(unsigned int flags)

{

SPGroup::modified(flags);

/* fixme: (Lauris) */

if (!this->parent && (flags & SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {

this->document->emitResizedSignal(this->width.computed, this->height.computed);

}

}

Inkscape::XML::Node *SPRoot::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)

{

if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {

repr = xml_doc->createElement("svg:svg");

}

if (flags & SP_OBJECT_WRITE_EXT) {

repr->setAttribute("inkscape:version", Inkscape::version_string);

}

if (!repr->attribute("version")) {

gchar *myversion = sp_version_to_string(this->version.svg);

repr->setAttribute("version", myversion);

g_free(myversion);

}

if (fabs(this->x.computed) > 1e-9) {

sp_repr_set_svg_double(repr, "x", this->x.computed);

}

if (fabs(this->y.computed) > 1e-9) {

sp_repr_set_svg_double(repr, "y", this->y.computed);

}

/* Unlike all other SPObject, here we want to preserve absolute units too (and only here,

repr->setAttribute("width", sp_svg_length_write_with_units(this->width).c_str());

repr->setAttribute("height", sp_svg_length_write_with_units(this->height).c_str());

if (this->viewBox_set) {

Inkscape::SVGOStringStream os;

os << this->viewBox.left() << " " << this->viewBox.top() << " "

<< this->viewBox.width() << " " << this->viewBox.height();

repr->setAttribute("viewBox", os.str().c_str());

}

SPGroup::write(xml_doc, repr, flags);

return repr;

}

Inkscape::DrawingItem *SPRoot::show(Inkscape::Drawing &drawing, unsigned int key, unsigned int flags)

{

Inkscape::DrawingItem *ai = 0;

ai = SPGroup::show(drawing, key, flags);

if (ai) {

Inkscape::DrawingGroup *g = dynamic_cast<Inkscape::DrawingGroup *>(ai);

g->setChildTransform(this->c2p);

}

// Uncomment to print out XML tree

// getRepr()->recursivePrintTree(0);

// Uncomment to print out SP Object tree

// recursivePrintTree(0);

// Uncomment to print out Display Item tree

// ai->recursivePrintTree(0);

return ai;

}

void SPRoot::print(SPPrintContext *ctx)

{

sp_print_bind(ctx, this->c2p, 1.0);

SPGroup::print(ctx);

sp_print_release(ctx);

}

const char *SPRoot::displayName() const {

return "SVG"; // Do not translate

}