src/live_effects/lpeobject.cpp

   1 #define INKSCAPE_LIVEPATHEFFECT_OBJECT_CPP\r
   2 \r
   3 /*\r
   4  * Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>\r
   5  *\r
   6  * Released under GNU GPL, read the file 'COPYING' for more information\r
   7  */\r
   8 \r
   9 #include "xml/repr.h"\r
  10 #include "xml/node-event-vector.h"\r
  11 #include "sp-object.h"\r
  12 #include "attributes.h"\r
  13 \r
  14 #include "document.h"\r
  15 #include <glibmm/i18n.h>\r
  16 \r
  17 #include "live_effects/lpeobject.h"\r
  18 #include "live_effects/effect.h"\r
  19 \r
  20 //#define LIVEPATHEFFECT_VERBOSE\r
  21 \r
  22 static void livepatheffect_class_init(LivePathEffectObjectClass *klass);\r
  23 static void livepatheffect_init(LivePathEffectObject *stop);\r
  24 \r
  25 static void livepatheffect_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);\r
  26 static void livepatheffect_release(SPObject *object);\r
  27 \r
  28 static void livepatheffect_set(SPObject *object, unsigned key, gchar const *value);\r
  29 static Inkscape::XML::Node *livepatheffect_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);\r
  30 \r
  31 static void livepatheffect_on_repr_attr_changed (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive, void * data);\r
  32 \r
  33 static SPObjectClass *livepatheffect_parent_class;\r
  34 /**\r
  35  * Registers the LivePathEffect class with Gdk and returns its type number.\r
  36  */\r
  37 GType\r
  38 livepatheffect_get_type ()\r
  39 {\r
  40     static GType livepatheffect_type = 0;\r
  41 \r
  42     if (!livepatheffect_type) {\r
  43         GTypeInfo livepatheffect_info = {\r
  44             sizeof (LivePathEffectObjectClass),\r
  45             NULL, NULL,\r
  46             (GClassInitFunc) livepatheffect_class_init,\r
  47             NULL, NULL,\r
  48             sizeof (LivePathEffectObject),\r
  49             16,\r
  50             (GInstanceInitFunc) livepatheffect_init,\r
  51             NULL,\r
  52         };\r
  53         livepatheffect_type = g_type_register_static (SP_TYPE_OBJECT, "LivePathEffectObject", &livepatheffect_info, (GTypeFlags)0);\r
  54     }\r
  55     return livepatheffect_type;\r
  56 }\r
  57 \r
  58 static Inkscape::XML::NodeEventVector const livepatheffect_repr_events = {\r
  59     NULL, /* child_added */\r
  60     NULL, /* child_removed */\r
  61     livepatheffect_on_repr_attr_changed,\r
  62     NULL, /* content_changed */\r
  63     NULL  /* order_changed */\r
  64 };\r
  65 \r
  66 \r
  67 /**\r
  68  * Callback to initialize livepatheffect vtable.\r
  69  */\r
  70 static void \r
  71 livepatheffect_class_init(LivePathEffectObjectClass *klass)\r
  72 {\r
  73     SPObjectClass *sp_object_class = (SPObjectClass *) klass;\r
  74 \r
  75     livepatheffect_parent_class = (SPObjectClass *) g_type_class_ref(SP_TYPE_OBJECT);\r
  76 \r
  77     sp_object_class->build = livepatheffect_build;\r
  78     sp_object_class->release = livepatheffect_release;\r
  79 \r
  80     sp_object_class->set = livepatheffect_set;\r
  81     sp_object_class->write = livepatheffect_write;\r
  82 }\r
  83 \r
  84 /**\r
  85  * Callback to initialize livepatheffect object.\r
  86  */\r
  87 static void\r
  88 livepatheffect_init(LivePathEffectObject *lpeobj)\r
  89 {\r
  90 #ifdef LIVEPATHEFFECT_VERBOSE\r
  91     g_message("Init livepatheffectobject");\r
  92 #endif\r
  93     lpeobj->effecttype = Inkscape::LivePathEffect::INVALID_LPE;\r
  94     lpeobj->lpe = NULL;\r
  95 \r
  96     lpeobj->effecttype_set = false;\r
  97 }\r
  98 \r
  99 /**\r
 100  * Virtual build: set livepatheffect attributes from its associated XML node.\r
 101  */\r
 102 static void \r
 103 livepatheffect_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)\r
 104 {\r
 105 #ifdef LIVEPATHEFFECT_VERBOSE\r
 106     g_message("Build livepatheffect");\r
 107 #endif\r
 108     g_assert(object != NULL);\r
 109     g_assert(SP_IS_OBJECT(object));\r
 110 \r
 111     if (((SPObjectClass *) livepatheffect_parent_class)->build)\r
 112         (* ((SPObjectClass *) livepatheffect_parent_class)->build)(object, document, repr);\r
 113 \r
 114     sp_object_read_attr(object, "effect");\r
 115 \r
 116     if (repr) {\r
 117         repr->addListener (&livepatheffect_repr_events, object);\r
 118     }\r
 119 \r
 120     /* Register ourselves, is this necessary? */\r
 121 //    sp_document_add_resource(document, "path-effect", object);\r
 122 }\r
 123 \r
 124 /**\r
 125  * Virtual release of livepatheffect members before destruction.\r
 126  */\r
 127 static void\r
 128 livepatheffect_release(SPObject *object)\r
 129 {\r
 130 #ifdef LIVEPATHEFFECT_VERBOSE\r
 131     g_print("Releasing livepatheffect");\r
 132 #endif\r
 133 \r
 134     LivePathEffectObject *lpeobj = LIVEPATHEFFECT(object);\r
 135 \r
 136     SP_OBJECT_REPR(object)->removeListenerByData(object);\r
 137 \r
 138 \r
 139 /*\r
 140     if (SP_OBJECT_DOCUMENT(object)) {\r
 141         // Unregister ourselves\r
 142         sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "livepatheffect", SP_OBJECT(object));\r
 143     }\r
 144 \r
 145     if (gradient->ref) {\r
 146         gradient->modified_connection.disconnect();\r
 147         gradient->ref->detach();\r
 148         delete gradient->ref;\r
 149         gradient->ref = NULL;\r
 150     }\r
 151 \r
 152     gradient->modified_connection.~connection();\r
 153 \r
 154 */\r
 155 \r
 156     if (lpeobj->lpe) {\r
 157         delete lpeobj->lpe;\r
 158         lpeobj->lpe = NULL;\r
 159     }\r
 160     lpeobj->effecttype = Inkscape::LivePathEffect::INVALID_LPE;\r
 161 \r
 162     if (((SPObjectClass *) livepatheffect_parent_class)->release)\r
 163         ((SPObjectClass *) livepatheffect_parent_class)->release(object);\r
 164 }\r
 165 \r
 166 /**\r
 167  * Virtual set: set attribute to value.\r
 168  */\r
 169 static void\r
 170 livepatheffect_set(SPObject *object, unsigned key, gchar const *value)\r
 171 {\r
 172     LivePathEffectObject *lpeobj = LIVEPATHEFFECT(object);\r
 173 #ifdef LIVEPATHEFFECT_VERBOSE\r
 174     g_print("Set livepatheffect");\r
 175 #endif\r
 176     switch (key) {\r
 177         case SP_PROP_PATH_EFFECT:\r
 178             if (lpeobj->lpe) {\r
 179                 delete lpeobj->lpe;\r
 180                 lpeobj->lpe = NULL;\r
 181             }\r
 182 \r
 183             if (value) {\r
 184                 lpeobj->effecttype = Inkscape::LivePathEffect::LPETypeConverter.get_id_from_key(value);\r
 185                 if (lpeobj->effecttype != Inkscape::LivePathEffect::INVALID_LPE) {\r
 186                     lpeobj->lpe = Inkscape::LivePathEffect::Effect::New(lpeobj->effecttype, lpeobj);\r
 187                 }\r
 188                 lpeobj->effecttype_set = true;\r
 189             } else {\r
 190                 lpeobj->effecttype = Inkscape::LivePathEffect::INVALID_LPE;\r
 191                 lpeobj->effecttype_set = false;\r
 192             }\r
 193             object->requestModified(SP_OBJECT_MODIFIED_FLAG);\r
 194             break;\r
 195     }\r
 196 \r
 197     if (((SPObjectClass *) livepatheffect_parent_class)->set) {\r
 198         ((SPObjectClass *) livepatheffect_parent_class)->set(object, key, value);\r
 199     }\r
 200 }\r
 201 \r
 202 /**\r
 203  * Virtual write: write object attributes to repr.\r
 204  */\r
 205 static Inkscape::XML::Node *\r
 206 livepatheffect_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)\r
 207 {\r
 208 #ifdef LIVEPATHEFFECT_VERBOSE\r
 209     g_print("Write livepatheffect");\r
 210 #endif\r
 211 \r
 212     LivePathEffectObject *lpeobj = LIVEPATHEFFECT(object);\r
 213 \r
 214     if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {\r
 215         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));\r
 216         repr = xml_doc->createElement("inkscape:path-effect");\r
 217     }\r
 218 \r
 219     if ((flags & SP_OBJECT_WRITE_ALL) || lpeobj->effecttype_set)\r
 220         repr->setAttribute("effect", Inkscape::LivePathEffect::LPETypeConverter.get_key(lpeobj->effecttype).c_str());\r
 221 \r
 222 //    lpeobj->lpe->write(repr); something like this.\r
 223 \r
 224     if (((SPObjectClass *) livepatheffect_parent_class)->write)\r
 225         (* ((SPObjectClass *) livepatheffect_parent_class)->write)(object, repr, flags);\r
 226 \r
 227     return repr;\r
 228 }\r
 229 \r
 230 static void \r
 231 livepatheffect_on_repr_attr_changed ( Inkscape::XML::Node * repr, \r
 232                                       const gchar *key, \r
 233                                       const gchar *oldval, \r
 234                                       const gchar *newval, \r
 235                                       bool is_interactive, \r
 236                                       void * data )\r
 237 {\r
 238 #ifdef LIVEPATHEFFECT_VERBOSE\r
 239     g_print("livepatheffect_on_repr_attr_changed");\r
 240 #endif\r
 241 \r
 242     if (!data)\r
 243         return;\r
 244 \r
 245     LivePathEffectObject *lpeobj = (LivePathEffectObject*) data;\r
 246     if (!lpeobj->lpe) \r
 247         return;\r
 248 \r
 249     lpeobj->lpe->setParameter(repr, key, oldval, newval);\r
 250 \r
 251     lpeobj->requestModified(SP_OBJECT_MODIFIED_FLAG);\r
 252 }\r
 253 \r
 254 \r
 255 /*\r
 256   Local Variables:\r
 257   mode:c++\r
 258   c-file-style:"stroustrup"\r
 259   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))\r
 260   indent-tabs-mode:nil\r
 261   fill-column:99\r
 262   End:\r
 263 */\r
 264 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :\r