From a303321365bf5ae640715eb9e033f6f01cb085c8 Mon Sep 17 00:00:00 2001
From: Martin Owens <doctormo@gmail.com>
Date: Sat, 5 Apr 2014 08:15:20 +0200
Subject: Allow command line options -i and -j to effect plain-svg output, this
 involves cropping and reducing.

(bzr r13268)
---
 src/main.cpp      | 16 ++++++++++++++++
 src/sp-object.cpp | 17 +++++++++++++++++
 src/sp-object.h   |  5 +++++
 3 files changed, 38 insertions(+)

(limited to 'src')

diff --git a/src/main.cpp b/src/main.cpp
index c2377b42c..6f4add4b1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1177,6 +1177,22 @@ static int sp_process_file_list(GSList *fl)
                     g_slist_free (selected);
                     g_slist_free (to_select);
                 }
+                if(sp_export_id) {
+                    doc->ensureUpToDate();
+
+                    // "crop" the document to the specified object, cleaning as we go.
+                    SPObject *obj = doc->getObjectById(sp_export_id);
+                    Geom::OptRect const bbox(SP_ITEM(obj)->visualBounds());
+
+                    if (bbox) {
+                        doc->fitToRect(*bbox, false);
+                    }
+
+                    if (sp_export_id_only) {
+                        // If -j then remove all other objects to complete the "crop"
+                        doc->getRoot()->cropToObject(obj);
+                    }
+                }
 
                 Inkscape::Extension::save(Inkscape::Extension::db.get("org.inkscape.output.svg.plain"), doc, sp_export_svg, false,
                             false, false, Inkscape::Extension::FILE_SAVE_METHOD_SAVE_COPY);
diff --git a/src/sp-object.cpp b/src/sp-object.cpp
index be3a1ab9d..c904705fb 100644
--- a/src/sp-object.cpp
+++ b/src/sp-object.cpp
@@ -460,6 +460,23 @@ void SPObject::deleteObject(bool propagate, bool propagate_descendants)
     sp_object_unref(this, NULL);
 }
 
+void SPObject::cropToObject(SPObject *except)
+{
+    GSList *toDelete = NULL;
+    for ( SPObject *child = this->firstChild(); child; child = child->getNext() ) {
+        if (SP_IS_ITEM(child)) {
+            if (child->isAncestorOf(except)) {
+                child->cropToObject(except);
+            } else if(child != except) {
+                toDelete = g_slist_append(toDelete, child);
+            }
+        }
+    }
+    for (GSList *item = toDelete; item; item = item->next) {
+        SP_OBJECT(item->data)->deleteObject(true, true);
+    }
+}
+
 void SPObject::attach(SPObject *object, SPObject *prev)
 {
     //g_return_if_fail(parent != NULL);
diff --git a/src/sp-object.h b/src/sp-object.h
index cf18d4523..9ce5629e6 100644
--- a/src/sp-object.h
+++ b/src/sp-object.h
@@ -464,6 +464,11 @@ public:
         deleteObject(propagate, propagate);
     }
 
+    /**
+     * Removes all children except for the given object, it's children and it's ancesstors.
+     */
+     void cropToObject(SPObject *except);
+
     /**
      * Connects a slot to be called when an object is deleted.
      *
-- 
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