Code

now that selection description includes style (filtered, clipped), we need to update...
[inkscape.git] / src / style.cpp
index 06855087808622d96ab168070dca9cf02c3a455b..ad4e509f6c0ca9129ebbaa350c9a35b7e16b0c5b 100644 (file)
@@ -1,9 +1,9 @@
 #define __SP_STYLE_C__
 
-/** \file
- * SVG stylesheets implementation.
- *
- * Authors:
+/** @file
+ * @brief SVG stylesheets implementation.
+ */
+/* Authors:
  *   Lauris Kaplinski <lauris@kaplinski.com>
  *   Peter Moulder <pmoulder@mail.csse.monash.edu.au>
  *   bulia byak <buliabyak@users.sf.net>
@@ -19,6 +19,9 @@
 # include "config.h"
 #endif
 
+#include <cstring>
+#include <string>
+
 #include "libcroco/cr-sel-eng.h"
 #include "xml/croco-node-iface.h"
 
 #include "style.h"
 #include "svg/css-ostringstream.h"
 #include "xml/repr.h"
+#include "xml/simple-document.h"
 #include "unit-constants.h"
-#include "isnan.h"
+#include "2geom/isnan.h"
 #include "macros.h"
+#include "preferences.h"
 
 #include "sp-filter-reference.h"
 
@@ -715,6 +720,17 @@ sp_style_read(SPStyle *style, SPObject *object, Inkscape::XML::Node *repr)
             style->stroke_dashoffset_set = FALSE;
         }
     }
+    
+    /* -inkscape-font-specification */
+    if (!style->text_private || !style->text->font_specification.set) {
+        val = repr->attribute("-inkscape-font-specification");
+        if (val) {
+            if (!style->text_private) sp_style_privatize_text(style);
+            gchar *val_unquoted = attribute_unquote(val);
+            sp_style_read_istring(&style->text->font_specification, val_unquoted);
+            if (val_unquoted) g_free (val_unquoted);
+        }
+    }
 
     /* font-family */
     if (!style->text_private || !style->text->font_family.set) {
@@ -776,15 +792,33 @@ sp_style_read_from_object(SPStyle *style, SPObject *object)
 
 
 /**
- * Read style properties from repr only.
+ * Read style properties from preferences.
+ * @param style The style to write to
+ * @param path Preferences directory from which the style should be read
  */
 void
-sp_style_read_from_repr(SPStyle *style, Inkscape::XML::Node *repr)
+sp_style_read_from_prefs(SPStyle *style, Glib::ustring const &path)
 {
     g_return_if_fail(style != NULL);
-    g_return_if_fail(repr != NULL);
-
-    sp_style_read(style, NULL, repr);
+    g_return_if_fail(path != "");
+    
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    // not optimal: we reconstruct the node based on the prefs, then pass it to
+    // sp_style_read for actual processing.
+    Inkscape::XML::SimpleDocument *tempdoc = new Inkscape::XML::SimpleDocument;
+    Inkscape::XML::Node *tempnode = tempdoc->createElement("temp");
+    
+    std::vector<Inkscape::Preferences::Entry> attrs = prefs->getAllEntries(path);
+    for (std::vector<Inkscape::Preferences::Entry>::iterator i = attrs.begin(); i != attrs.end(); ++i) {
+        tempnode->setAttribute(i->getEntryName().data(), i->getString().data());
+    }
+
+    sp_style_read(style, NULL, tempnode);
+    
+    Inkscape::GC::release(tempnode);
+    Inkscape::GC::release(tempdoc);
+    delete tempdoc;
 }
 
 
@@ -817,6 +851,14 @@ sp_style_merge_property(SPStyle *style, gint id, gchar const *val)
     g_return_if_fail(val != NULL);
 
     switch (id) {
+        case SP_PROP_INKSCAPE_FONT_SPEC:
+            if (!style->text_private) sp_style_privatize_text(style);
+            if (!style->text->font_specification.set) {
+                gchar *val_unquoted = attribute_unquote(val);
+                sp_style_read_istring(&style->text->font_specification, val_unquoted);
+                if (val_unquoted) g_free (val_unquoted);
+            }
+            break;
         /* CSS2 */
         /* Font */
         case SP_PROP_FONT_FAMILY:
@@ -1500,6 +1542,13 @@ sp_style_merge_from_parent(SPStyle *const style, SPStyle const *const parent)
         }
     }
 
+    if (style->text && parent->text) {
+        if (!style->text->font_specification.set || style->text->font_specification.inherit) {
+            g_free(style->text->font_specification.value);
+            style->text->font_specification.value = g_strdup(parent->text->font_specification.value);
+        }
+    }
+
     /* Markers - Free the old value and make copy of the new */
     for (unsigned i = SP_MARKER_LOC; i < SP_MARKER_LOC_QTY; i++) {
         if (!style->marker[i].set || style->marker[i].inherit) {
@@ -1553,7 +1602,7 @@ sp_style_merge_paint_prop_from_dying_parent(SPStyle *style,
      * I haven't given this much attention.  See comments below about
      * currentColor, colorProfile, and relative URIs.
      */
-    if (!child.set || child.inherit || child.currentcolor) {
+    if (!child.set || child.inherit) {
         sp_style_merge_ipaint(style, &child, &parent);
         child.set = parent.set;
         child.inherit = parent.inherit;
@@ -1643,7 +1692,7 @@ sp_style_merge_length_prop_from_dying_parent(LengthT &child, LengthT const &pare
                  * fixme: Have separate ex ratio parameter.
                  * Get x height from libnrtype or pango.
                  */
-                if (!isFinite(child.value)) {
+                if (!IS_FINITE(child.value)) {
                     child.value = child.computed;
                     child.unit = SP_CSS_UNIT_NONE;
                 }
@@ -1885,10 +1934,14 @@ sp_style_merge_from_dying_parent(SPStyle *const style, SPStyle const *const pare
     /* Font */
 
     if (style->text && parent->text) {
+        sp_style_merge_string_prop_from_dying_parent(style->text->font_specification,
+                                                     parent->text->font_specification);
+        
         sp_style_merge_string_prop_from_dying_parent(style->text->font_family,
                                                      parent->text->font_family);
     }
 
+
     /* Properties that don't inherit by default.  Most of these need special handling. */
     {
         /*
@@ -1983,9 +2036,6 @@ sp_style_merge_from_dying_parent(SPStyle *const style, SPStyle const *const pare
 
         if (!style->filter.set || style->filter.inherit)
         {
-            // FIXME:
-            // instead of just copying over, we need to _really merge_ the two filters by combining their
-            // filter primitives
             sp_style_merge_ifilter(style, &parent->filter);
         }
 
@@ -2075,8 +2125,12 @@ sp_style_set_ipaint_to_uri(SPStyle *style, SPIPaint *paint, const Inkscape::URI
 static void
 sp_style_set_ipaint_to_uri_string (SPStyle *style, SPIPaint *paint, const gchar *uri)
 {
-    const Inkscape::URI IURI(uri);
-    sp_style_set_ipaint_to_uri(style, paint, &IURI, style->document);
+    try {
+        const Inkscape::URI IURI(uri);
+        sp_style_set_ipaint_to_uri(style, paint, &IURI, style->document);
+    } catch (...) {
+        g_warning("URI failed to parse: %s", uri);
+    }
 }
 
 void
@@ -2092,7 +2146,9 @@ static void
 sp_style_merge_ipaint(SPStyle *style, SPIPaint *paint, SPIPaint const *parent)
 {
     if ((paint->set && paint->currentcolor) || parent->currentcolor) {
+        bool isset = paint->set;
         paint->clear();
+        paint->set = isset;
         paint->currentcolor = TRUE;
         paint->setColor(style->color.value.color);
         return;
@@ -2107,6 +2163,8 @@ sp_style_merge_ipaint(SPStyle *style, SPIPaint *paint, SPIPaint const *parent)
         }
     } else if ( parent->isColor() ) {
         paint->setColor( parent->value.color );
+    } else if ( parent->isNoneSet() ) {
+        paint->noneSet = TRUE;
     } else if ( parent->isNone() ) {
         //
     } else {
@@ -2122,6 +2180,10 @@ sp_style_merge_ipaint(SPStyle *style, SPIPaint *paint, SPIPaint const *parent)
 static void
 sp_style_merge_ifilter(SPStyle *style, SPIFilter const *parent)
 {
+    // FIXME:
+    // instead of just copying over, we need to _really merge_ the two filters by combining their
+    // filter primitives
+
     sp_style_filter_clear(style);
     style->filter.set = parent->set;
     style->filter.inherit = parent->inherit;
@@ -2129,7 +2191,13 @@ sp_style_merge_ifilter(SPStyle *style, SPIFilter const *parent)
     if (style->filter.href && style->filter.href->getObject())
        style->filter.href->detach();
 
-    if (style->filter.href && parent->href) {
+    // it may be that this style has not yet created its SPFilterReference
+    if (!style->filter.href && style->object && SP_OBJECT_DOCUMENT(style->object)) {
+            style->filter.href = new SPFilterReference(SP_OBJECT_DOCUMENT(style->object));
+            style->filter.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_filter_ref_changed), style));
+    }
+
+    if (style->filter.href && parent->href && parent->href->getObject()) {
         try {
             style->filter.href->attach(*parent->href->getURI());
         } catch (Inkscape::BadURIException &e) {
@@ -2186,75 +2254,102 @@ sp_style_write_string(SPStyle const *const style, guint const flags)
     p += sp_style_write_ienum(p, c + BMAX - p, "text-anchor", enum_text_anchor, &style->text_anchor, NULL, flags);
 
     /// \todo fixme: Per type methods need default flag too (lauris)
-    p += sp_style_write_iscale24(p, c + BMAX - p, "opacity", &style->opacity, NULL, flags);
-    p += sp_style_write_ipaint(p, c + BMAX - p, "color", &style->color, NULL, flags);
+
+    if (style->opacity.value != SP_SCALE24_MAX) {
+        p += sp_style_write_iscale24(p, c + BMAX - p, "opacity", &style->opacity, NULL, flags);
+    }
+
+    if (!style->color.noneSet) { // CSS does not permit "none" for color
+        p += sp_style_write_ipaint(p, c + BMAX - p, "color", &style->color, NULL, flags);
+    }
+
     p += sp_style_write_ipaint(p, c + BMAX - p, "fill", &style->fill, NULL, flags);
-    p += sp_style_write_iscale24(p, c + BMAX - p, "fill-opacity", &style->fill_opacity, NULL, flags);
-    p += sp_style_write_ienum(p, c + BMAX - p, "fill-rule", enum_fill_rule, &style->fill_rule, NULL, flags);
+    // if fill:none, skip writing fill properties
+    if (!style->fill.noneSet) {
+        p += sp_style_write_iscale24(p, c + BMAX - p, "fill-opacity", &style->fill_opacity, NULL, flags);
+        p += sp_style_write_ienum(p, c + BMAX - p, "fill-rule", enum_fill_rule, &style->fill_rule, NULL, flags);
+    }
+
     p += sp_style_write_ipaint(p, c + BMAX - p, "stroke", &style->stroke, NULL, flags);
-    p += sp_style_write_ilength(p, c + BMAX - p, "stroke-width", &style->stroke_width, NULL, flags);
-    p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linecap", enum_stroke_linecap, &style->stroke_linecap, NULL, flags);
-    p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linejoin", enum_stroke_linejoin, &style->stroke_linejoin, NULL, flags);
 
+    // stroke width affects markers, so write it if there's stroke OR any markers
+    if (!style->stroke.noneSet || 
+        style->marker[SP_MARKER_LOC].set ||
+        style->marker[SP_MARKER_LOC_START].set ||
+        style->marker[SP_MARKER_LOC_MID].set || 
+        style->marker[SP_MARKER_LOC_END].set) {
+        p += sp_style_write_ilength(p, c + BMAX - p, "stroke-width", &style->stroke_width, NULL, flags);
+    }
+
+    // if stroke:none, skip writing stroke properties
+    if (!style->stroke.noneSet) {
+        p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linecap", enum_stroke_linecap, &style->stroke_linecap, NULL, flags);
+        p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linejoin", enum_stroke_linejoin, &style->stroke_linejoin, NULL, flags);
+        p += sp_style_write_ifloat(p, c + BMAX - p, "stroke-miterlimit", &style->stroke_miterlimit, NULL, flags);
+        p += sp_style_write_iscale24(p, c + BMAX - p, "stroke-opacity", &style->stroke_opacity, NULL, flags);
+
+        /** \todo fixme: */
+        if ((flags == SP_STYLE_FLAG_ALWAYS)
+            || style->stroke_dasharray_set)
+        {
+            if (style->stroke_dasharray_inherit) {
+                p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:inherit;");
+            } else if (style->stroke_dash.n_dash && style->stroke_dash.dash) {
+                p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:");
+                gint i;
+                for (i = 0; i < style->stroke_dash.n_dash; i++) {
+                    Inkscape::CSSOStringStream os;
+                    if (i) {
+                        os << ", ";
+                    }
+                    os << style->stroke_dash.dash[i];
+                    p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
+                }
+                if (p < c + BMAX) {
+                    *p++ = ';';
+                }
+            } else {
+                p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:none;");
+            }
+        }
+
+        /** \todo fixme: */
+        if (style->stroke_dashoffset_set) {
+            Inkscape::CSSOStringStream os;
+            os << "stroke-dashoffset:" << style->stroke_dash.offset << ";";
+            p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
+        } else if (flags == SP_STYLE_FLAG_ALWAYS) {
+            p += g_snprintf(p, c + BMAX - p, "stroke-dashoffset:0;");
+        }
+    }
+
+    bool marker_none = false;
+    gchar *master = style->marker[SP_MARKER_LOC].value;
     if (style->marker[SP_MARKER_LOC].set) {
         p += g_snprintf(p, c + BMAX - p, "marker:%s;", style->marker[SP_MARKER_LOC].value);
     } else if (flags == SP_STYLE_FLAG_ALWAYS) {
         p += g_snprintf(p, c + BMAX - p, "marker:none;");
+        marker_none = true;
     }
-    if (style->marker[SP_MARKER_LOC_START].set) {
+    if (style->marker[SP_MARKER_LOC_START].set 
+       && (!master || strcmp(master, style->marker[SP_MARKER_LOC_START].value))) {
         p += g_snprintf(p, c + BMAX - p, "marker-start:%s;", style->marker[SP_MARKER_LOC_START].value);
-    } else if (flags == SP_STYLE_FLAG_ALWAYS) {
+    } else if (flags == SP_STYLE_FLAG_ALWAYS && !marker_none) {
         p += g_snprintf(p, c + BMAX - p, "marker-start:none;");
     }
-    if (style->marker[SP_MARKER_LOC_MID].set) {
+    if (style->marker[SP_MARKER_LOC_MID].set
+       && (!master || strcmp(master, style->marker[SP_MARKER_LOC_MID].value))) {
         p += g_snprintf(p, c + BMAX - p, "marker-mid:%s;", style->marker[SP_MARKER_LOC_MID].value);
-    } else if (flags == SP_STYLE_FLAG_ALWAYS) {
+    } else if (flags == SP_STYLE_FLAG_ALWAYS && !marker_none) {
         p += g_snprintf(p, c + BMAX - p, "marker-mid:none;");
     }
-    if (style->marker[SP_MARKER_LOC_END].set) {
+    if (style->marker[SP_MARKER_LOC_END].set
+       && (!master || strcmp(master, style->marker[SP_MARKER_LOC_END].value))) {
         p += g_snprintf(p, c + BMAX - p, "marker-end:%s;", style->marker[SP_MARKER_LOC_END].value);
-    } else if (flags == SP_STYLE_FLAG_ALWAYS) {
+    } else if (flags == SP_STYLE_FLAG_ALWAYS && !marker_none) {
         p += g_snprintf(p, c + BMAX - p, "marker-end:none;");
     }
 
-    p += sp_style_write_ifloat(p, c + BMAX - p, "stroke-miterlimit", &style->stroke_miterlimit, NULL, flags);
-
-    /** \todo fixme: */
-    if ((flags == SP_STYLE_FLAG_ALWAYS)
-        || style->stroke_dasharray_set)
-    {
-        if (style->stroke_dasharray_inherit) {
-            p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:inherit;");
-        } else if (style->stroke_dash.n_dash && style->stroke_dash.dash) {
-            p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:");
-            gint i;
-            for (i = 0; i < style->stroke_dash.n_dash; i++) {
-                Inkscape::CSSOStringStream os;
-                if (i) {
-                    os << ", ";
-                }
-                os << style->stroke_dash.dash[i];
-                p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
-            }
-            if (p < c + BMAX) {
-                *p++ = ';';
-            }
-        } else {
-            p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:none;");
-        }
-    }
-
-    /** \todo fixme: */
-    if (style->stroke_dashoffset_set) {
-        Inkscape::CSSOStringStream os;
-        os << "stroke-dashoffset:" << style->stroke_dash.offset << ";";
-        p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
-    } else if (flags == SP_STYLE_FLAG_ALWAYS) {
-        p += g_snprintf(p, c + BMAX - p, "stroke-dashoffset:0;");
-    }
-
-    p += sp_style_write_iscale24(p, c + BMAX - p, "stroke-opacity", &style->stroke_opacity, NULL, flags);
-
     p += sp_style_write_ienum(p, c + BMAX - p, "visibility", enum_visibility, &style->visibility, NULL, flags);
     p += sp_style_write_ienum(p, c + BMAX - p, "display", enum_display, &style->display, NULL, flags);
     p += sp_style_write_ienum(p, c + BMAX - p, "overflow", enum_overflow, &style->overflow, NULL, flags);
@@ -2322,54 +2417,75 @@ sp_style_write_difference(SPStyle const *const from, SPStyle const *const to)
     if (from->opacity.set && from->opacity.value != SP_SCALE24_MAX) {
         p += sp_style_write_iscale24(p, c + BMAX - p, "opacity", &from->opacity, &to->opacity, SP_STYLE_FLAG_IFSET);
     }
-    p += sp_style_write_ipaint(p, c + BMAX - p, "color", &from->color, &to->color, SP_STYLE_FLAG_IFSET);
+
+    if (!from->color.noneSet) { // CSS does not permit "none" for color
+        p += sp_style_write_ipaint(p, c + BMAX - p, "color", &from->color, &to->color, SP_STYLE_FLAG_IFSET);
+    }
+
     p += sp_style_write_ipaint(p, c + BMAX - p, "fill", &from->fill, &to->fill, SP_STYLE_FLAG_IFDIFF);
-    p += sp_style_write_iscale24(p, c + BMAX - p, "fill-opacity", &from->fill_opacity, &to->fill_opacity, SP_STYLE_FLAG_IFDIFF);
-    p += sp_style_write_ienum(p, c + BMAX - p, "fill-rule", enum_fill_rule, &from->fill_rule, &to->fill_rule, SP_STYLE_FLAG_IFDIFF);
+    // if fill:none, skip writing fill properties
+    if (!from->fill.noneSet) {
+        p += sp_style_write_iscale24(p, c + BMAX - p, "fill-opacity", &from->fill_opacity, &to->fill_opacity, SP_STYLE_FLAG_IFDIFF);
+        p += sp_style_write_ienum(p, c + BMAX - p, "fill-rule", enum_fill_rule, &from->fill_rule, &to->fill_rule, SP_STYLE_FLAG_IFDIFF);
+    }
+
     p += sp_style_write_ipaint(p, c + BMAX - p, "stroke", &from->stroke, &to->stroke, SP_STYLE_FLAG_IFDIFF);
-    p += sp_style_write_ilength(p, c + BMAX - p, "stroke-width", &from->stroke_width, &to->stroke_width, SP_STYLE_FLAG_IFDIFF);
-    p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linecap", enum_stroke_linecap,
-                              &from->stroke_linecap, &to->stroke_linecap, SP_STYLE_FLAG_IFDIFF);
-    p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linejoin", enum_stroke_linejoin,
-                              &from->stroke_linejoin, &to->stroke_linejoin, SP_STYLE_FLAG_IFDIFF);
-    p += sp_style_write_ifloat(p, c + BMAX - p, "stroke-miterlimit",
-                               &from->stroke_miterlimit, &to->stroke_miterlimit, SP_STYLE_FLAG_IFDIFF);
-    /** \todo fixme: */
-    if (from->stroke_dasharray_set) {
-        if (from->stroke_dasharray_inherit) {
-            p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:inherit;");
-        } else if (from->stroke_dash.n_dash && from->stroke_dash.dash) {
-            p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:");
-            for (gint i = 0; i < from->stroke_dash.n_dash; i++) {
-                Inkscape::CSSOStringStream os;
-                if (i) {
-                    os << ", ";
+
+    // stroke width affects markers, so write it if there's stroke OR any markers
+    if (!from->stroke.noneSet || 
+        from->marker[SP_MARKER_LOC].set ||
+        from->marker[SP_MARKER_LOC_START].set ||
+        from->marker[SP_MARKER_LOC_MID].set || 
+        from->marker[SP_MARKER_LOC_END].set) {
+        p += sp_style_write_ilength(p, c + BMAX - p, "stroke-width", &from->stroke_width, &to->stroke_width, SP_STYLE_FLAG_IFDIFF);
+    }
+
+    // if stroke:none, skip writing stroke properties
+    if (!from->stroke.noneSet) {
+        p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linecap", enum_stroke_linecap,
+                                  &from->stroke_linecap, &to->stroke_linecap, SP_STYLE_FLAG_IFDIFF);
+        p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linejoin", enum_stroke_linejoin,
+                                  &from->stroke_linejoin, &to->stroke_linejoin, SP_STYLE_FLAG_IFDIFF);
+        p += sp_style_write_ifloat(p, c + BMAX - p, "stroke-miterlimit",
+                                   &from->stroke_miterlimit, &to->stroke_miterlimit, SP_STYLE_FLAG_IFDIFF);
+        /** \todo fixme: */
+        if (from->stroke_dasharray_set) {
+            if (from->stroke_dasharray_inherit) {
+                p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:inherit;");
+            } else if (from->stroke_dash.n_dash && from->stroke_dash.dash) {
+                p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:");
+                for (gint i = 0; i < from->stroke_dash.n_dash; i++) {
+                    Inkscape::CSSOStringStream os;
+                    if (i) {
+                        os << ", ";
+                    }
+                    os << from->stroke_dash.dash[i];
+                    p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
                 }
-                os << from->stroke_dash.dash[i];
-                p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
+                p += g_snprintf(p, c + BMAX - p, ";");
             }
-            p += g_snprintf(p, c + BMAX - p, ";");
         }
+        /* fixme: */
+        if (from->stroke_dashoffset_set) {
+            Inkscape::CSSOStringStream os;
+            os << "stroke-dashoffset:" << from->stroke_dash.offset << ";";
+            p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
+        }
+        p += sp_style_write_iscale24(p, c + BMAX - p, "stroke-opacity", &from->stroke_opacity, &to->stroke_opacity, SP_STYLE_FLAG_IFDIFF);
     }
-    /* fixme: */
-    if (from->stroke_dashoffset_set) {
-        Inkscape::CSSOStringStream os;
-        os << "stroke-dashoffset:" << from->stroke_dash.offset << ";";
-        p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
-    }
-    p += sp_style_write_iscale24(p, c + BMAX - p, "stroke-opacity", &from->stroke_opacity, &to->stroke_opacity, SP_STYLE_FLAG_IFDIFF);
 
     /* markers */
-    if (from->marker[SP_MARKER_LOC].value != NULL) {
-        p += g_snprintf(p, c + BMAX - p, "marker:%s;",       from->marker[SP_MARKER_LOC].value);
+    gchar *master = from->marker[SP_MARKER_LOC].value;
+    if (master != NULL) {
+        p += g_snprintf(p, c + BMAX - p, "marker:%s;", master);
     }
-    if (from->marker[SP_MARKER_LOC_START].value != NULL) {
+    if (from->marker[SP_MARKER_LOC_START].value != NULL && (!master || strcmp(master, from->marker[SP_MARKER_LOC_START].value))) {
         p += g_snprintf(p, c + BMAX - p, "marker-start:%s;", from->marker[SP_MARKER_LOC_START].value);
     }
-    if (from->marker[SP_MARKER_LOC_MID].value != NULL) {
+    if (from->marker[SP_MARKER_LOC_MID].value != NULL && (!master || strcmp(master, from->marker[SP_MARKER_LOC_MID].value))) {
         p += g_snprintf(p, c + BMAX - p, "marker-mid:%s;",   from->marker[SP_MARKER_LOC_MID].value);
     }
-    if (from->marker[SP_MARKER_LOC_END].value != NULL) {
+    if (from->marker[SP_MARKER_LOC_END].value != NULL && (!master || strcmp(master, from->marker[SP_MARKER_LOC_END].value))) {
         p += g_snprintf(p, c + BMAX - p, "marker-end:%s;",   from->marker[SP_MARKER_LOC_END].value);
     }
 
@@ -2415,12 +2531,18 @@ sp_style_clear(SPStyle *style)
     style->stroke.clear();
     sp_style_filter_clear(style);
 
-    if (style->fill.value.href)
+    if (style->fill.value.href) {
         delete style->fill.value.href;
-    if (style->stroke.value.href)
+        style->fill.value.href = NULL;
+    }
+    if (style->stroke.value.href) {
         delete style->stroke.value.href;
-    if (style->filter.href)
+        style->stroke.value.href = NULL;
+    }
+    if (style->filter.href) {
         delete style->filter.href;
+        style->filter.href = NULL;
+    }
 
     if (style->stroke_dash.dash) {
         g_free(style->stroke_dash.dash);
@@ -2453,7 +2575,7 @@ sp_style_clear(SPStyle *style)
     style->text = text;
     style->text_private = text_private;
 
-    /* fixme: */
+    style->text->font_specification.set = FALSE;
     style->text->font.set = FALSE;
     style->text->font_family.set = FALSE;
 
@@ -2633,6 +2755,7 @@ sp_text_style_new()
     ts->refcount = 1;
     sp_text_style_clear(ts);
 
+    ts->font_specification.value = g_strdup("Bitstream Vera Sans");
     ts->font.value = g_strdup("Bitstream Vera Sans");
     ts->font_family.value = g_strdup("Bitstream Vera Sans");
 
@@ -2646,6 +2769,7 @@ sp_text_style_new()
 static void
 sp_text_style_clear(SPTextStyle *ts)
 {
+    ts->font_specification.set = FALSE;
     ts->font.set = FALSE;
     ts->font_family.set = FALSE;
 }
@@ -2661,6 +2785,7 @@ sp_text_style_unref(SPTextStyle *st)
     st->refcount -= 1;
 
     if (st->refcount < 1) {
+        g_free(st->font_specification.value);
         g_free(st->font.value);
         g_free(st->font_family.value);
         g_free(st);
@@ -2680,6 +2805,7 @@ sp_text_style_duplicate_unset(SPTextStyle *st)
     SPTextStyle *nt = g_new0(SPTextStyle, 1);
     nt->refcount = 1;
 
+    nt->font_specification.value = g_strdup(st->font_specification.value);
     nt->font.value = g_strdup(st->font.value);
     nt->font_family.value = g_strdup(st->font_family.value);
 
@@ -2701,6 +2827,7 @@ sp_text_style_write(gchar *p, guint const len, SPTextStyle const *const st, guin
         flags = SP_STYLE_FLAG_IFSET;
 
     d += sp_style_write_istring(p + d, len - d, "font-family", &st->font_family, NULL, flags);
+    d += sp_style_write_istring(p + d, len - d, "-inkscape-font-specification", &st->font_specification, NULL, flags);
     return d;
 }
 
@@ -2963,6 +3090,7 @@ sp_style_read_icolor(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocume
         guint32 const rgb0 = sp_svg_read_color(str, 0xff);
         if (rgb0 != 0xff) {
             paint->setColor(rgb0);
+            paint->set = TRUE;
             paint->inherit = FALSE;
         }
     }
@@ -3308,8 +3436,10 @@ sp_style_write_istring(gchar *p, gint const len, gchar const *const key,
             return g_snprintf(p, len, "%s:inherit;", key);
         } else {
             gchar *val_quoted = css2_escape_quote(val->value);
-            return g_snprintf(p, len, "%s:%s;", key, val_quoted);
-            g_free (val_quoted);
+            if (val_quoted) {
+                return g_snprintf(p, len, "%s:%s;", key, val_quoted);
+                g_free (val_quoted);
+            }
         }
     }
     return 0;
@@ -3573,7 +3703,7 @@ sp_style_write_ipaint(gchar *b, gint const len, gchar const *const key,
                 css << "currentColor";
             }
 
-            if ( paint->colorSet ) {
+            if ( paint->colorSet && !paint->currentcolor ) {
                 if ( !css.str().empty() ) {
                     css << " ";
                 }
@@ -3582,7 +3712,7 @@ sp_style_write_ipaint(gchar *b, gint const len, gchar const *const key,
                 css << color_buf;
             }
 
-            if (paint->value.color.icc) {
+            if (paint->value.color.icc && !paint->currentcolor) {
                 if ( !css.str().empty() ) {
                     css << " ";
                 }
@@ -3719,13 +3849,15 @@ sp_style_set_property_url (SPObject *item, gchar const *property, SPObject *link
 
     if (repr == NULL) return;
 
-    g_return_if_fail(linked != NULL);
-
-    gchar *val = g_strdup_printf("url(#%s)", SP_OBJECT_ID(linked));
-
     SPCSSAttr *css = sp_repr_css_attr_new();
-    sp_repr_css_set_property(css, property, val);
-    g_free(val);
+    if (linked) {
+        gchar *val = g_strdup_printf("url(#%s)", SP_OBJECT_ID(linked));
+        sp_repr_css_set_property(css, property, val);
+        g_free(val);
+    } else {
+        sp_repr_css_unset_property(css, "filter");
+    }
+
     if (recursive) {
         sp_repr_css_change_recursive(repr, css, "style");
     } else {
@@ -3797,6 +3929,9 @@ sp_style_unset_property_attrs(SPObject *o)
     if (style->stroke_dashoffset_set) {
         repr->setAttribute("stroke-dashoffset", NULL);
     }
+    if (style->text_private && style->text->font_specification.set) {
+        repr->setAttribute("-inkscape-font-specification", NULL);
+    }
     if (style->text_private && style->text->font_family.set) {
         repr->setAttribute("font-family", NULL);
     }
@@ -3856,6 +3991,7 @@ SPCSSAttr *
 sp_css_attr_unset_text(SPCSSAttr *css)
 {
     sp_repr_css_set_property(css, "font", NULL); // not implemented yet
+    sp_repr_css_set_property(css, "-inkscape-font-specification", NULL);
     sp_repr_css_set_property(css, "font-size", NULL);
     sp_repr_css_set_property(css, "font-size-adjust", NULL); // not implemented yet
     sp_repr_css_set_property(css, "font-style", NULL);
@@ -3908,6 +4044,7 @@ sp_css_attr_unset_uris(SPCSSAttr *css)
     if (is_url(sp_repr_css_property(css, "color-profile", NULL))) sp_repr_css_set_property(css, "color-profile", NULL);
     if (is_url(sp_repr_css_property(css, "cursor", NULL))) sp_repr_css_set_property(css, "cursor", NULL);
     if (is_url(sp_repr_css_property(css, "filter", NULL))) sp_repr_css_set_property(css, "filter", NULL);
+    if (is_url(sp_repr_css_property(css, "marker", NULL))) sp_repr_css_set_property(css, "marker", NULL);
     if (is_url(sp_repr_css_property(css, "marker-start", NULL))) sp_repr_css_set_property(css, "marker-start", NULL);
     if (is_url(sp_repr_css_property(css, "marker-mid", NULL))) sp_repr_css_set_property(css, "marker-mid", NULL);
     if (is_url(sp_repr_css_property(css, "marker-end", NULL))) sp_repr_css_set_property(css, "marker-end", NULL);