1 files changed, 165 insertions, 0 deletions
diff --git a/src/object/sp-symbol.cpp b/src/object/sp-symbol.cpp
new file mode 100644
index 0000000..dda078d
--- /dev/null
+++ b/src/object/sp-symbol.cpp
@@ -0,0 +1,165 @@
+// 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 <2geom/transforms.h>
+#include "display/drawing-group.h"
+#include "xml/repr.h"
+#include "attributes.h"
+#include "print.h"
+#include "sp-symbol.h"
+#include "document.h"
+
+SPSymbol::SPSymbol() : SPGroup(), SPViewBox() {
+}
+
+SPSymbol::~SPSymbol() = default;
+
+void SPSymbol::build(SPDocument *document, Inkscape::XML::Node *repr) {
+    this->readAttr( "viewBox" );
+    this->readAttr( "preserveAspectRatio" );
+
+    SPGroup::build(document, repr);
+}
+
+void SPSymbol::release() {
+	SPGroup::release();
+}
+
+void SPSymbol::set(SPAttributeEnum key, const gchar* value) {
+    switch (key) {
+    case SP_ATTR_VIEWBOX:
+        set_viewBox( value );
+        // std::cout << "Symbol: ViewBox: " << viewBox << std::endl;
+        this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);
+        break;
+
+    case SP_ATTR_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::update(SPCtx *ctx, guint flags) {
+    if (this->cloned) {
+
+        SPItemCtx *ictx = (SPItemCtx *) ctx;
+        SPItemCtx rctx = get_rctx( ictx );
+
+        // 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");
+    }
+
+    //XML Tree being used directly here while it shouldn't be.
+    repr->setAttribute("viewBox", this->getRepr()->attribute("viewBox"));
+	
+    //XML Tree being used directly here while it shouldn't be.
+    repr->setAttribute("preserveAspectRatio", this->getRepr()->attribute("preserveAspectRatio"));
+
+    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 :