From 68664e00e2372534b4df2fdc5f54f836bafece18 Mon Sep 17 00:00:00 2001
From: miklosh <miklosh@users.sourceforge.net>
Date: Sat, 28 Jul 2007 14:31:25 +0000
Subject: [PATCH] Set top-level groups as layers with the name of the PDF
 document

---
 src/extension/internal/pdfinput/pdf-input.cpp |  8 +++++-
 .../internal/pdfinput/svg-builder.cpp         | 25 ++++++++++++++++++-
 src/extension/internal/pdfinput/svg-builder.h |  4 ++-
 3 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/src/extension/internal/pdfinput/pdf-input.cpp b/src/extension/internal/pdfinput/pdf-input.cpp
index 9adf1958f..4a9377b9a 100644
--- a/src/extension/internal/pdfinput/pdf-input.cpp
+++ b/src/extension/internal/pdfinput/pdf-input.cpp
@@ -69,7 +69,12 @@ PdfInput::open(::Inkscape::Extension::Input * mod, const gchar * uri) {
     sp_document_set_undo_sensitive(doc, false); // No need to undo in this temporary document
 
     // Create builder and parser
-    SvgBuilder *builder = new SvgBuilder(doc, pdf_doc->getXRef());
+    gchar *docname = g_path_get_basename(uri);
+    gchar *dot = g_strrstr(docname, ".");
+    if (dot) {
+        *dot = 0;
+    }
+    SvgBuilder *builder = new SvgBuilder(doc, docname, pdf_doc->getXRef());
     PdfParser *pdf_parser = new PdfParser(pdf_doc->getXRef(), builder, page_num-1, page->getRotate(),
                                           page->getResourceDict(), page->getCropBox());
 
@@ -84,6 +89,7 @@ PdfInput::open(::Inkscape::Extension::Input * mod, const gchar * uri) {
     obj.free();
     delete pdf_parser;
     delete builder;
+    g_free(docname);
     delete pdf_doc;
 
     // Restore undo
diff --git a/src/extension/internal/pdfinput/svg-builder.cpp b/src/extension/internal/pdfinput/svg-builder.cpp
index f640ded35..b0c6c8fea 100644
--- a/src/extension/internal/pdfinput/svg-builder.cpp
+++ b/src/extension/internal/pdfinput/svg-builder.cpp
@@ -69,8 +69,9 @@ SvgBuilder::SvgBuilder() {
     _current_state = NULL;
 }
 
-SvgBuilder::SvgBuilder(SPDocument *document, XRef *xref) {
+SvgBuilder::SvgBuilder(SPDocument *document, gchar *docname, XRef *xref) {
     _doc = document;
+    _docname = docname;
     _xref = xref;
     _xml_doc = sp_document_repr_doc(_doc);
     _container = _root = _doc->rroot;
@@ -80,6 +81,7 @@ SvgBuilder::SvgBuilder(SPDocument *document, XRef *xref) {
 
 SvgBuilder::SvgBuilder(SvgBuilder *parent, Inkscape::XML::Node *root) {
     _doc = parent->_doc;
+    _docname = parent->_docname;
     _xref = parent->_xref;
     _xml_doc = parent->_xml_doc;
     _container = this->_root = root;
@@ -96,6 +98,16 @@ void SvgBuilder::setDocumentSize(double width, double height) {
     this->_height = height;
 }
 
+/**
+ * \brief Sets groupmode of the current container to 'layer' and sets its label if given
+ */
+void SvgBuilder::setAsLayer(char *layer_name) {
+    _container->setAttribute("inkscape:groupmode", "layer");
+    if (layer_name) {
+        _container->setAttribute("inkscape:label", layer_name);
+    }
+}
+
 void SvgBuilder::saveState() {
     _group_depth.push_back(0);
     pushGroup();
@@ -114,6 +126,17 @@ Inkscape::XML::Node *SvgBuilder::pushGroup() {
     _container = node;
     Inkscape::GC::release(node);
     _group_depth.back()++;
+    // Set as a layer if this is a top-level group
+    if ( _container->parent() == _root ) {
+        static int layer_count = 1;
+        if ( layer_count > 1 ) {
+            gchar *layer_name = g_strdup_printf("%s%d", _docname, layer_count);
+            setAsLayer(layer_name);
+            g_free(layer_name);
+        } else {
+            setAsLayer(_docname);
+        }
+    }
 
     return _container;
 }
diff --git a/src/extension/internal/pdfinput/svg-builder.h b/src/extension/internal/pdfinput/svg-builder.h
index 47a79a0f4..a329e3020 100644
--- a/src/extension/internal/pdfinput/svg-builder.h
+++ b/src/extension/internal/pdfinput/svg-builder.h
@@ -79,12 +79,13 @@ struct SvgGlyph {
  */
 class SvgBuilder {
 public:
-    SvgBuilder(SPDocument *document, XRef *xref);
+    SvgBuilder(SPDocument *document, gchar *docname, XRef *xref);
     SvgBuilder(SvgBuilder *parent, Inkscape::XML::Node *root);
     ~SvgBuilder();
 
     // Property setting
     void setDocumentSize(double width, double height);  // Document size in px
+    void setAsLayer(char *layer_name=NULL);
 
     // Handling the node stack
     Inkscape::XML::Node *pushGroup();
@@ -166,6 +167,7 @@ private:
     GfxState *_current_state;
 
     SPDocument *_doc;
+    gchar *_docname;    // Basename of the URI from which this document is created
     XRef *_xref;    // Cross-reference table from the PDF doc we're converting from
     Inkscape::XML::Document *_xml_doc;
     Inkscape::XML::Node *_root;  // Root node from the point of view of this SvgBuilder
-- 
2.30.2