src/sp-object-group.cpp

   1 /*
   2  * Abstract base class for non-item groups
   3  *
   4  * Authors:
   5  *   Lauris Kaplinski <lauris@kaplinski.com>
   6  *   Jon A. Cruz <jon@joncruz.org>
   7  *   Abhishek Sharma
   8  *
   9  * Copyright (C) 1999-2003 Authors
  10  * Copyright (C) 2001-2002 Ximian, Inc.
  11  *
  12  * Released under GNU GPL, read the file 'COPYING' for more information
  13  */
  14
  15 #include "sp-object-group.h"
  16 #include "xml/repr.h"
  17 #include "document.h"
  18
  19 SPObjectClass * SPObjectGroupClass::static_parent_class = 0;
  20
  21 GType SPObjectGroup::sp_objectgroup_get_type(void)
  22 {
  23     static GType objectgroup_type = 0;
  24     if (!objectgroup_type) {
  25         GTypeInfo objectgroup_info = {
  26             sizeof(SPObjectGroupClass),
  27             NULL,   /* base_init */
  28             NULL,   /* base_finalize */
  29             (GClassInitFunc) SPObjectGroupClass::sp_objectgroup_class_init,
  30             NULL,   /* class_finalize */
  31             NULL,   /* class_data */
  32             sizeof(SPObjectGroup),
  33             16,     /* n_preallocs */
  34             (GInstanceInitFunc) init,
  35             NULL,   /* value_table */
  36         };
  37         objectgroup_type = g_type_register_static(SP_TYPE_OBJECT, "SPObjectGroup", &objectgroup_info, (GTypeFlags)0);
  38     }
  39     return objectgroup_type;
  40 }
  41
  42 void SPObjectGroupClass::sp_objectgroup_class_init(SPObjectGroupClass *klass)
  43 {
  44     GObjectClass * object_class = (GObjectClass *) klass;
  45     SPObjectClass * sp_object_class = (SPObjectClass *) klass;
  46
  47     static_parent_class = (SPObjectClass *)g_type_class_ref(SP_TYPE_OBJECT);
  48
  49     sp_object_class->child_added = SPObjectGroup::childAdded;
  50     sp_object_class->remove_child = SPObjectGroup::removeChild;
  51     sp_object_class->order_changed = SPObjectGroup::orderChanged;
  52     sp_object_class->write = SPObjectGroup::write;
  53 }
  54
  55 void SPObjectGroup::init(SPObjectGroup * /*objectgroup*/)
  56 {
  57 }
  58
  59 void SPObjectGroup::childAdded(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
  60 {
  61     if (((SPObjectClass *) (SPObjectGroupClass::static_parent_class))->child_added) {
  62         (* ((SPObjectClass *) (SPObjectGroupClass::static_parent_class))->child_added)(object, child, ref);
  63     }
  64
  65     object->requestModified(SP_OBJECT_MODIFIED_FLAG);
  66 }
  67
  68 void SPObjectGroup::removeChild(SPObject *object, Inkscape::XML::Node *child)
  69 {
  70     if (((SPObjectClass *) (SPObjectGroupClass::static_parent_class))->remove_child) {
  71         (* ((SPObjectClass *) (SPObjectGroupClass::static_parent_class))->remove_child)(object, child);
  72     }
  73
  74     object->requestModified(SP_OBJECT_MODIFIED_FLAG);
  75 }
  76
  77 void SPObjectGroup::orderChanged(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
  78 {
  79     if (((SPObjectClass *) (SPObjectGroupClass::static_parent_class))->order_changed) {
  80         (* ((SPObjectClass *) (SPObjectGroupClass::static_parent_class))->order_changed)(object, child, old_ref, new_ref);
  81     }
  82
  83     object->requestModified(SP_OBJECT_MODIFIED_FLAG);
  84 }
  85
  86 Inkscape::XML::Node *SPObjectGroup::write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
  87 {
  88     SP_OBJECTGROUP(object); // Ensure we have the right type of SPObject
  89
  90     if (flags & SP_OBJECT_WRITE_BUILD) {
  91         if (!repr) {
  92             repr = xml_doc->createElement("svg:g");
  93         }
  94         GSList *l = 0;
  95         for ( SPObject *child = object->firstChild() ; child ; child = child->getNext() ) {
  96             Inkscape::XML::Node *crepr = child->updateRepr(xml_doc, NULL, flags);
  97             if (crepr) {
  98                 l = g_slist_prepend(l, crepr);
  99             }
 100         }
 101         while (l) {
 102             repr->addChild((Inkscape::XML::Node *) l->data, NULL);
 103             Inkscape::GC::release((Inkscape::XML::Node *) l->data);
 104             l = g_slist_remove(l, l->data);
 105         }
 106     } else {
 107         for ( SPObject *child = object->firstChild() ; child ; child = child->getNext() ) {
 108             child->updateRepr(flags);
 109         }
 110     }
 111
 112     if (((SPObjectClass *) (SPObjectGroupClass::static_parent_class))->write) {
 113         ((SPObjectClass *) (SPObjectGroupClass::static_parent_class))->write(object, xml_doc, repr, flags);
 114     }
 115
 116     return repr;
 117 }
 118
 119 /*
 120   Local Variables:
 121   mode:c++
 122   c-file-style:"stroustrup"
 123   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 124   indent-tabs-mode:nil
 125   fill-column:99
 126   End:
 127 */
 128 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :