Code

Merge and cleanup of GSoC C++-ification project.
[inkscape.git] / src / sp-filter.cpp
index e89108d1cae83c3773dd7fc31921a30da7ebeb0f..cfd6253a3e7c0e64b8b9dd023abfad2e95ea0c92 100644 (file)
@@ -1,5 +1,3 @@
-#define __SP_FILTER_CPP__
-
 /** \file
  * SVG <filter> implementation.
  */
@@ -7,6 +5,8 @@
  * Authors:
  *   Hugo Rodrigues <haa.rodrigues@gmail.com>
  *   Niko Kiirala <niko@kiirala.com>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
  *
  * Copyright (C) 2006,2007 Authors
  *
 using std::map;
 using std::pair;
 
+#include <gtkmm.h>
+
 #include "attributes.h"
 #include "document.h"
 #include "sp-filter.h"
 #include "sp-filter-reference.h"
 #include "uri.h"
 #include "xml/repr.h"
+#include <cstring>
+#include <string>
 
 #define SP_MACROS_SILENT
 #include "macros.h"
 
-#include "display/nr-filter.cpp"
+#include "display/nr-filter.h"
 
 /* Filter base class */
 
@@ -47,7 +51,7 @@ static void sp_filter_child_added(SPObject *object,
                                     Inkscape::XML::Node *child,
                                     Inkscape::XML::Node *ref);
 static void sp_filter_remove_child(SPObject *object, Inkscape::XML::Node *child);
-static Inkscape::XML::Node *sp_filter_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
+static Inkscape::XML::Node *sp_filter_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
 
 static void filter_ref_changed(SPObject *old_ref, SPObject *ref, SPFilter *filter);
 static void filter_ref_modified(SPObject *href, guint flags, SPFilter *filter);
@@ -104,13 +108,15 @@ sp_filter_init(SPFilter *filter)
     filter->height = 0;
 
     filter->filterUnits = SP_FILTER_UNITS_OBJECTBOUNDINGBOX;
-    filter->primitiveUnits = SP_FILTER_UNITS_OBJECTBOUNDINGBOX;
+    filter->primitiveUnits = SP_FILTER_UNITS_USERSPACEONUSE;
     filter->filterUnits_set = FALSE;
     filter->primitiveUnits_set = FALSE;
 
     filter->_renderer = NULL;
 
-    filter->_image_name = map<gchar *, int, ltstr>();
+    filter->_image_name = new std::map<gchar *, int, ltstr>;
+    filter->_image_name->clear();
+    filter->_image_number_next = 0;
 
     filter->filterRes = NumberOptNumber();
 
@@ -130,17 +136,17 @@ sp_filter_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *rep
     }
 
     //Read values of key attributes from XML nodes into object.
-    sp_object_read_attr(object, "filterUnits");
-    sp_object_read_attr(object, "primitiveUnits");
-    sp_object_read_attr(object, "x");
-    sp_object_read_attr(object, "y");
-    sp_object_read_attr(object, "width");
-    sp_object_read_attr(object, "height");
-    sp_object_read_attr(object, "filterRes");
-    sp_object_read_attr(object, "xlink:href");
+    object->readAttr( "filterUnits" );
+    object->readAttr( "primitiveUnits" );
+    object->readAttr( "x" );
+    object->readAttr( "y" );
+    object->readAttr( "width" );
+    object->readAttr( "height" );
+    object->readAttr( "filterRes" );
+    object->readAttr( "xlink:href" );
 
 //is this necessary?
-    sp_document_add_resource(document, "filter", object);
+    document->addResource("filter", object);
 }
 
 /**
@@ -153,7 +159,7 @@ sp_filter_release(SPObject *object)
 
     if (SP_OBJECT_DOCUMENT(object)) {
         /* Unregister ourselves */
-        sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "filter", SP_OBJECT(object));
+        SP_OBJECT_DOCUMENT(object)->removeResource("filter", SP_OBJECT(object));
     }
 
 //TODO: release resources here
@@ -167,6 +173,7 @@ sp_filter_release(SPObject *object)
     }
 
     filter->modified_connection.~connection();
+    delete filter->_image_name;
 
     if (((SPObjectClass *) filter_parent_class)->release)
         ((SPObjectClass *) filter_parent_class)->release(object);
@@ -197,14 +204,14 @@ sp_filter_set(SPObject *object, unsigned int key, gchar const *value)
             break;
         case SP_ATTR_PRIMITIVEUNITS:
             if (value) {
-                if (!strcmp(value, "userSpaceOnUse")) {
-                    filter->primitiveUnits = SP_FILTER_UNITS_USERSPACEONUSE;
-                } else {
+                if (!strcmp(value, "objectBoundingBox")) {
                     filter->primitiveUnits = SP_FILTER_UNITS_OBJECTBOUNDINGBOX;
+                } else {
+                    filter->primitiveUnits = SP_FILTER_UNITS_USERSPACEONUSE;
                 }
                 filter->primitiveUnits_set = TRUE;
             } else {
-                filter->primitiveUnits = SP_FILTER_UNITS_OBJECTBOUNDINGBOX;
+                filter->primitiveUnits = SP_FILTER_UNITS_USERSPACEONUSE;
                 filter->primitiveUnits_set = FALSE;
             }
             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
@@ -274,12 +281,31 @@ sp_filter_update(SPObject *object, SPCtx *ctx, guint flags)
  * Writes its settings to an incoming repr object, if any.
  */
 static Inkscape::XML::Node *
-sp_filter_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
+sp_filter_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
 {
     SPFilter *filter = SP_FILTER(object);
 
-    if (!repr) {
-        repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
+    // Original from sp-item-group.cpp
+    if (flags & SP_OBJECT_WRITE_BUILD) {
+        if (!repr) {
+            repr = doc->createElement("svg:filter");
+        }
+        GSList *l = NULL;
+        for ( SPObject *child = object->firstChild(); child; child = child->getNext() ) {
+            Inkscape::XML::Node *crepr = child->updateRepr(doc, NULL, flags);
+            if (crepr) {
+                l = g_slist_prepend (l, crepr);
+            }
+        }
+        while (l) {
+            repr->addChild((Inkscape::XML::Node *) l->data, NULL);
+            Inkscape::GC::release((Inkscape::XML::Node *) l->data);
+            l = g_slist_remove (l, l->data);
+        }
+    } else {
+        for ( SPObject *child = object->firstChild() ; child; child = child->getNext() ) {
+            child->updateRepr(flags);
+        }
     }
 
     if ((flags & SP_OBJECT_WRITE_ALL) || filter->filterUnits_set) {
@@ -295,11 +321,11 @@ sp_filter_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
 
     if ((flags & SP_OBJECT_WRITE_ALL) || filter->primitiveUnits_set) {
         switch (filter->primitiveUnits) {
-            case SP_FILTER_UNITS_USERSPACEONUSE:
-                repr->setAttribute("primitiveUnits", "userSpaceOnUse");
+            case SP_FILTER_UNITS_OBJECTBOUNDINGBOX:
+                repr->setAttribute("primitiveUnits", "objectBoundingBox");
                 break;
             default:
-                repr->setAttribute("primitiveUnits", "objectBoundingBox");
+                repr->setAttribute("primitiveUnits", "userSpaceOnUse");
                 break;
         }
     }
@@ -342,8 +368,17 @@ sp_filter_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
         g_free(uri_string);
     }
 
+    // TODO: This is evil, correctly implement support for color-interpolation-filters!!!
+    // The color-interpolation-filters attribute is initially set to linearRGB according to the SVG standard.
+    // However, Inkscape completely ignores it and implicitly assumes that it is sRGB (like color-interpolation-filters).
+    // This results in a discrepancy between Inkscape and other renderers in how they render filters.
+    // To mitigate this problem I've (Jasper van de Gronde,th.v.d.gronde@hccnet.nl) added this to ensure that at least
+    // any filters written by Inkscape will henceforth be rendered the same in other renderers.
+    // In the future Inkscape should have proper support for the color-interpolation properties and this should be changed.
+    repr->setAttribute("color-interpolation-filters", "sRGB");
+
     if (((SPObjectClass *) filter_parent_class)->write) {
-        ((SPObjectClass *) filter_parent_class)->write(object, repr, flags);
+        ((SPObjectClass *) filter_parent_class)->write(object, doc, repr, flags);
     }
 
     return repr;
@@ -403,13 +438,15 @@ sp_filter_remove_child(SPObject *object, Inkscape::XML::Node *child)
     object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 }
 
-void sp_filter_build_renderer(SPFilter *sp_filter, NR::Filter *nr_filter)
+void sp_filter_build_renderer(SPFilter *sp_filter, Inkscape::Filters::Filter *nr_filter)
 {
     g_assert(sp_filter != NULL);
     g_assert(nr_filter != NULL);
 
     sp_filter->_renderer = nr_filter;
 
+    nr_filter->set_filter_units(sp_filter->filterUnits);
+    nr_filter->set_primitive_units(sp_filter->primitiveUnits);
     nr_filter->set_x(sp_filter->x);
     nr_filter->set_y(sp_filter->y);
     nr_filter->set_width(sp_filter->width);
@@ -454,9 +491,9 @@ int sp_filter_primitive_count(SPFilter *filter) {
 
 int sp_filter_get_image_name(SPFilter *filter, gchar const *name) {
     gchar *name_copy = strdup(name);
-    map<gchar *, int, ltstr>::iterator result = filter->_image_name.find(name_copy);
+    map<gchar *, int, ltstr>::iterator result = filter->_image_name->find(name_copy);
     free(name_copy);
-    if (result == filter->_image_name.end()) return -1;
+    if (result == filter->_image_name->end()) return -1;
     else return (*result).second;
 }
 
@@ -464,13 +501,72 @@ int sp_filter_set_image_name(SPFilter *filter, gchar const *name) {
     int value = filter->_image_number_next;
     filter->_image_number_next++;
     gchar *name_copy = strdup(name);
-    pair<map<gchar*,int,ltstr>::iterator,bool> ret = filter->_image_name.insert(pair<gchar*,int>(name_copy, value));
+    pair<gchar*,int> new_pair(name_copy, value);
+    pair<map<gchar*,int,ltstr>::iterator,bool> ret = filter->_image_name->insert(new_pair);
     if (ret.second == false) {
         return (*ret.first).second;
     }
     return value;
 }
 
+gchar const *sp_filter_name_for_image(SPFilter const *filter, int const image) {
+    switch (image) {
+        case Inkscape::Filters::NR_FILTER_SOURCEGRAPHIC:
+            return "SourceGraphic";
+            break;
+        case Inkscape::Filters::NR_FILTER_SOURCEALPHA:
+            return "SourceAlpha";
+            break;
+        case Inkscape::Filters::NR_FILTER_BACKGROUNDIMAGE:
+            return "BackgroundImage";
+            break;
+        case Inkscape::Filters::NR_FILTER_BACKGROUNDALPHA:
+            return "BackgroundAlpha";
+            break;
+        case Inkscape::Filters::NR_FILTER_STROKEPAINT:
+            return "StrokePaint";
+            break;
+        case Inkscape::Filters::NR_FILTER_FILLPAINT:
+            return "FillPaint";
+            break;
+        case Inkscape::Filters::NR_FILTER_SLOT_NOT_SET:
+        case Inkscape::Filters::NR_FILTER_UNNAMED_SLOT:
+            return 0;
+            break;
+        default:
+            for (map<gchar *, int, ltstr>::const_iterator i
+                     = filter->_image_name->begin() ;
+                 i != filter->_image_name->end() ; i++) {
+                if (i->second == image) {
+                    return i->first;
+                }
+            }
+    }
+    return 0;
+}
+
+Glib::ustring sp_filter_get_new_result_name(SPFilter *filter) {
+    g_assert(filter != NULL);
+    int largest = 0;
+
+    SPObject *primitive_obj = filter->children;
+    while (primitive_obj) {
+        if (SP_IS_FILTER_PRIMITIVE(primitive_obj)) {
+            Inkscape::XML::Node *repr = SP_OBJECT_REPR(primitive_obj);
+            char const *result = repr->attribute("result");
+            int index;
+            if (result && sscanf(result, "result%d", &index) == 1) {
+                if (index > largest) {
+                    largest = index;
+                }
+            }
+        }
+        primitive_obj = primitive_obj->next;
+    }
+
+    return "result" + Glib::Ascii::dtostr(largest + 1);
+}
+
 bool ltstr::operator()(const char* s1, const char* s2) const
 {
     return strcmp(s1, s2) < 0;
@@ -486,4 +582,4 @@ bool ltstr::operator()(const char* s1, const char* s2) const
   fill-column:99
   End:
 */
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :