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-rw-r--r--src/object/sp-symbol.cpp259
1 files changed, 259 insertions, 0 deletions
diff --git a/src/object/sp-symbol.cpp b/src/object/sp-symbol.cpp
new file mode 100644
index 0000000..40421d3
--- /dev/null
+++ b/src/object/sp-symbol.cpp
@@ -0,0 +1,259 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * SVG <symbol> implementation
+ *
+ * Authors:
+ * Lauris Kaplinski <lauris@kaplinski.com>
+ * Abhishek Sharma
+ * Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 1999-2003 Lauris Kaplinski
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <string>
+#include <glibmm/i18n.h>
+#include <2geom/transforms.h>
+
+#include "display/drawing-group.h"
+#include "xml/repr.h"
+#include "attributes.h"
+#include "print.h"
+#include "sp-symbol.h"
+#include "sp-use.h"
+#include "document.h"
+#include "inkscape.h"
+#include "desktop.h"
+#include "layer-manager.h"
+
+SPSymbol::SPSymbol() : SPGroup(), SPViewBox() {
+}
+
+SPSymbol::~SPSymbol() = default;
+
+void SPSymbol::build(SPDocument *document, Inkscape::XML::Node *repr) {
+ this->readAttr(SPAttr::X);
+ this->readAttr(SPAttr::Y);
+ this->readAttr(SPAttr::WIDTH);
+ this->readAttr(SPAttr::HEIGHT);
+ this->readAttr(SPAttr::VIEWBOX);
+ this->readAttr(SPAttr::PRESERVEASPECTRATIO);
+
+ SPGroup::build(document, repr);
+}
+
+void SPSymbol::release() {
+ SPGroup::release();
+}
+
+void SPSymbol::set(SPAttr key, const gchar* value) {
+ switch (key) {
+ case SPAttr::X:
+ this->x.readOrUnset(value);
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+ break;
+
+ case SPAttr::Y:
+ this->y.readOrUnset(value);
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+ break;
+
+ case SPAttr::WIDTH:
+ this->width.readOrUnset(value, SVGLength::PERCENT, 1.0, 1.0);
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+ break;
+
+ case SPAttr::HEIGHT:
+ this->height.readOrUnset(value, SVGLength::PERCENT, 1.0, 1.0);
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+ break;
+
+ case SPAttr::VIEWBOX:
+ set_viewBox( value );
+ // std::cout << "Symbol: ViewBox: " << viewBox << std::endl;
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);
+ break;
+
+ case SPAttr::PRESERVEASPECTRATIO:
+ set_preserveAspectRatio( value );
+ // std::cout << "Symbol: Preserve aspect ratio: " << aspect_align << ", " << aspect_clip << std::endl;
+ this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);
+ break;
+
+ default:
+ SPGroup::set(key, value);
+ break;
+ }
+}
+
+void SPSymbol::child_added(Inkscape::XML::Node *child, Inkscape::XML::Node *ref) {
+ SPGroup::child_added(child, ref);
+}
+
+void SPSymbol::unSymbol()
+{
+ SPDocument *doc = this->document;
+ Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+ // Check if something is selected.
+
+ doc->ensureUpToDate();
+
+ // Create new <g> and insert in current layer
+ Inkscape::XML::Node *group = xml_doc->createElement("svg:g");
+ //TODO: Better handle if no desktop, currently go to defs without it
+ SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+ if(desktop && desktop->doc() == doc) {
+ desktop->layerManager().currentLayer()->getRepr()->appendChild(group);
+ } else {
+ parent->getRepr()->appendChild(group);
+ }
+
+ // Move all children of symbol to group
+ std::vector<SPObject*> children = childList(false);
+
+ // Converting a group to a symbol inserts a group for non-translational transform.
+ // In converting a symbol back to a group we strip out the inserted group (or any other
+ // group that only adds a transform to the symbol content).
+ if( children.size() == 1 ) {
+ SPObject *object = children[0];
+ if ( dynamic_cast<SPGroup *>( object ) ) {
+ if( object->getAttribute("style") == nullptr ||
+ object->getAttribute("class") == nullptr ) {
+
+ group->setAttribute("transform", object->getAttribute("transform"));
+ children = object->childList(false);
+ }
+ }
+ }
+ for (std::vector<SPObject*>::const_reverse_iterator i=children.rbegin();i!=children.rend();++i){
+ Inkscape::XML::Node *repr = (*i)->getRepr();
+ repr->parent()->removeChild(repr);
+ group->addChild(repr,nullptr);
+ }
+
+ // Copy relevant attributes
+ group->setAttribute("style", getAttribute("style"));
+ group->setAttribute("class", getAttribute("class"));
+ group->setAttribute("title", getAttribute("title"));
+ group->setAttribute("inkscape:transform-center-x",
+ getAttribute("inkscape:transform-center-x"));
+ group->setAttribute("inkscape:transform-center-y",
+ getAttribute("inkscape:transform-center-y"));
+
+
+ // Need to delete <symbol>; all <use> elements that referenced <symbol> should
+ // auto-magically reference <g> (if <symbol> deleted after setting <g> 'id').
+ Glib::ustring id = getAttribute("id");
+ group->setAttribute("id", id);
+
+ deleteObject(true);
+
+ // Clean up
+ Inkscape::GC::release(group);
+}
+
+void SPSymbol::update(SPCtx *ctx, guint flags) {
+ if (this->cloned) {
+
+ SPItemCtx *ictx = (SPItemCtx *) ctx;
+
+ // Calculate x, y, width, height from parent/initial viewport
+ this->calcDimsFromParentViewport(ictx, false, dynamic_cast<SPUse const *>(parent));
+
+ SPItemCtx rctx = *ictx;
+ rctx.viewport = Geom::Rect::from_xywh(x.computed, y.computed, width.computed, height.computed);
+ rctx = get_rctx(&rctx);
+
+ // And invoke parent method
+ SPGroup::update((SPCtx *) &rctx, flags);
+
+ // As last step set additional transform of drawing group
+ for (SPItemView *v = this->display; v != nullptr; v = v->next) {
+ Inkscape::DrawingGroup *g = dynamic_cast<Inkscape::DrawingGroup *>(v->arenaitem);
+ g->setChildTransform(this->c2p);
+ }
+ } else {
+ // No-op
+ SPGroup::update(ctx, flags);
+ }
+}
+
+void SPSymbol::modified(unsigned int flags) {
+ SPGroup::modified(flags);
+}
+
+
+Inkscape::XML::Node* SPSymbol::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
+ if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
+ repr = xml_doc->createElement("svg:symbol");
+ }
+
+ this->writeDimensions(repr);
+ this->write_viewBox(repr);
+ this->write_preserveAspectRatio(repr);
+
+ SPGroup::write(xml_doc, repr, flags);
+
+ return repr;
+}
+
+Inkscape::DrawingItem* SPSymbol::show(Inkscape::Drawing &drawing, unsigned int key, unsigned int flags) {
+ Inkscape::DrawingItem *ai = nullptr;
+
+ if (this->cloned) {
+ // Cloned <symbol> is actually renderable
+ ai = SPGroup::show(drawing, key, flags);
+ Inkscape::DrawingGroup *g = dynamic_cast<Inkscape::DrawingGroup *>(ai);
+
+ if (g) {
+ g->setChildTransform(this->c2p);
+ }
+ }
+
+ return ai;
+}
+
+void SPSymbol::hide(unsigned int key) {
+ if (this->cloned) {
+ /* Cloned <symbol> is actually renderable */
+ SPGroup::hide(key);
+ }
+}
+
+
+Geom::OptRect SPSymbol::bbox(Geom::Affine const &transform, SPItem::BBoxType type) const {
+ Geom::OptRect bbox;
+
+ // We don't need a bounding box for Symbols dialog when selecting
+ // symbols. They have no canvas location. But cloned symbols are.
+ if (this->cloned) {
+ Geom::Affine const a( this->c2p * transform );
+ bbox = SPGroup::bbox(a, type);
+ }
+
+ return bbox;
+}
+
+void SPSymbol::print(SPPrintContext* ctx) {
+ if (this->cloned) {
+ // Cloned <symbol> is actually renderable
+
+ ctx->bind(this->c2p, 1.0);
+
+ SPGroup::print(ctx);
+
+ ctx->release ();
+ }
+}
+
+/*
+ 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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