src/sp-fespotlight.cpp

   1 #define __SP_FESPOTLIGHT_CPP__
   2
   3 /** \file
   4  * SVG <fespotlight> implementation.
   5  */
   6 /*
   7  * Authors:
   8  *   Hugo Rodrigues <haa.rodrigues@gmail.com>
   9  *   Niko Kiirala <niko@kiirala.com>
  10  *   Jean-Rene Reinhard <jr@komite.net>
  11  *
  12  * Copyright (C) 2006,2007 Authors
  13  *
  14  * Released under GNU GPL, read the file 'COPYING' for more information
  15  */
  16
  17 #ifdef HAVE_CONFIG_H
  18 # include "config.h"
  19 #endif
  20
  21 #include <glib.h>
  22
  23 #include "attributes.h"
  24 #include "document.h"
  25 #include "sp-fespotlight.h"
  26 #include "sp-fediffuselighting-fns.h"
  27 #include "sp-fespecularlighting-fns.h"
  28 #include "xml/repr.h"
  29
  30 #define SP_MACROS_SILENT
  31 #include "macros.h"
  32
  33 /* FeSpotLight class */
  34
  35 static void sp_fespotlight_class_init(SPFeSpotLightClass *klass);
  36 static void sp_fespotlight_init(SPFeSpotLight *fespotlight);
  37
  38 static void sp_fespotlight_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
  39 static void sp_fespotlight_release(SPObject *object);
  40 static void sp_fespotlight_set(SPObject *object, unsigned int key, gchar const *value);
  41 static void sp_fespotlight_update(SPObject *object, SPCtx *ctx, guint flags);
  42 static Inkscape::XML::Node *sp_fespotlight_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
  43
  44 static SPObjectClass *feSpotLight_parent_class;
  45
  46 GType
  47 sp_fespotlight_get_type()
  48 {
  49     static GType fespotlight_type = 0;
  50
  51     if (!fespotlight_type) {
  52         GTypeInfo fespotlight_info = {
  53             sizeof(SPFeSpotLightClass),
  54             NULL, NULL,
  55             (GClassInitFunc) sp_fespotlight_class_init,
  56             NULL, NULL,
  57             sizeof(SPFeSpotLight),
  58             16,
  59             (GInstanceInitFunc) sp_fespotlight_init,
  60             NULL,    /* value_table */
  61         };
  62         fespotlight_type = g_type_register_static(SP_TYPE_OBJECT, "SPFeSpotLight", &fespotlight_info, (GTypeFlags)0);
  63     }
  64     return fespotlight_type;
  65 }
  66
  67 static void
  68 sp_fespotlight_class_init(SPFeSpotLightClass *klass)
  69 {
  70
  71     SPObjectClass *sp_object_class = (SPObjectClass *)klass;
  72
  73     feSpotLight_parent_class = (SPObjectClass*)g_type_class_peek_parent(klass);
  74
  75     sp_object_class->build = sp_fespotlight_build;
  76     sp_object_class->release = sp_fespotlight_release;
  77     sp_object_class->write = sp_fespotlight_write;
  78     sp_object_class->set = sp_fespotlight_set;
  79     sp_object_class->update = sp_fespotlight_update;
  80 }
  81
  82 static void
  83 sp_fespotlight_init(SPFeSpotLight *fespotlight)
  84 {
  85     fespotlight->x = 0;
  86     fespotlight->y = 0;
  87     fespotlight->z = 0;
  88     fespotlight->pointsAtX = 0;
  89     fespotlight->pointsAtY = 0;
  90     fespotlight->pointsAtZ = 0;
  91     fespotlight->specularExponent = 1;
  92     fespotlight->limitingConeAngle = 90;
  93 }
  94
  95 /**
  96  * Reads the Inkscape::XML::Node, and initializes SPPointLight variables.  For this to get called,
  97  * our name must be associated with a repr via "sp_object_type_register".  Best done through
  98  * sp-object-repr.cpp's repr_name_entries array.
  99  */
 100 static void
 101 sp_fespotlight_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
 102 {
 103     if (((SPObjectClass *) feSpotLight_parent_class)->build) {
 104         ((SPObjectClass *) feSpotLight_parent_class)->build(object, document, repr);
 105     }
 106
 107     //Read values of key attributes from XML nodes into object.
 108     sp_object_read_attr(object, "x");
 109     sp_object_read_attr(object, "y");
 110     sp_object_read_attr(object, "z");
 111     sp_object_read_attr(object, "pointsAtX");
 112     sp_object_read_attr(object, "pointsAtY");
 113     sp_object_read_attr(object, "pointsAtZ");
 114     sp_object_read_attr(object, "specularExponent");
 115     sp_object_read_attr(object, "limitingConeAngle");
 116
 117 //is this necessary?
 118     sp_document_add_resource(document, "fespotlight", object);
 119 }
 120
 121 /**
 122  * Drops any allocated memory.
 123  */
 124 static void
 125 sp_fespotlight_release(SPObject *object)
 126 {
 127     //SPFeSpotLight *fespotlight = SP_FESPOTLIGHT(object);
 128
 129     if (SP_OBJECT_DOCUMENT(object)) {
 130         /* Unregister ourselves */
 131         sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "fespotlight", SP_OBJECT(object));
 132     }
 133
 134 //TODO: release resources here
 135 }
 136
 137 /**
 138  * Sets a specific value in the SPFeSpotLight.
 139  */
 140 static void
 141 sp_fespotlight_set(SPObject *object, unsigned int key, gchar const *value)
 142 {
 143     SPFeSpotLight *fespotlight = SP_FESPOTLIGHT(object);
 144
 145     switch (key) {
 146     case SP_ATTR_X:
 147         fespotlight->x = g_ascii_strtod(value, NULL);
 148         if (object->parent &&
 149                 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
 150                  SP_IS_FESPECULARLIGHTING(object->parent))) {
 151             object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 152         }
 153         break;
 154     case SP_ATTR_Y:
 155         fespotlight->y = g_ascii_strtod(value, NULL);
 156         if (object->parent &&
 157                 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
 158                  SP_IS_FESPECULARLIGHTING(object->parent))) {
 159             object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 160         }
 161         break;
 162     case SP_ATTR_Z:
 163         fespotlight->z = g_ascii_strtod(value, NULL);
 164         if (object->parent &&
 165                 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
 166                  SP_IS_FESPECULARLIGHTING(object->parent))) {
 167             object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 168         }
 169         break;
 170     case SP_ATTR_POINTSATX:
 171         fespotlight->pointsAtX = g_ascii_strtod(value, NULL);
 172         if (object->parent &&
 173                 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
 174                  SP_IS_FESPECULARLIGHTING(object->parent))) {
 175             object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 176         }
 177         break;
 178     case SP_ATTR_POINTSATY:
 179         fespotlight->pointsAtY = g_ascii_strtod(value, NULL);
 180         if (object->parent &&
 181                 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
 182                  SP_IS_FESPECULARLIGHTING(object->parent))) {
 183             object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 184         }
 185         break;
 186     case SP_ATTR_POINTSATZ:
 187         fespotlight->pointsAtZ = g_ascii_strtod(value, NULL);
 188         if (object->parent &&
 189                 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
 190                  SP_IS_FESPECULARLIGHTING(object->parent))) {
 191             object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 192         }
 193         break;
 194     case SP_ATTR_SPECULAREXPONENT:
 195         fespotlight->specularExponent = g_ascii_strtod(value, NULL);
 196         if (object->parent &&
 197                 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
 198                  SP_IS_FESPECULARLIGHTING(object->parent))) {
 199             object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 200         }
 201         break;
 202     case SP_ATTR_LIMITINGCONEANGLE:
 203         fespotlight->limitingConeAngle = g_ascii_strtod(value, NULL);
 204         if (object->parent &&
 205                 (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
 206                  SP_IS_FESPECULARLIGHTING(object->parent))) {
 207             object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 208         }
 209         break;
 210     default:
 211         // See if any parents need this value.
 212         if (((SPObjectClass *) feSpotLight_parent_class)->set) {
 213             ((SPObjectClass *) feSpotLight_parent_class)->set(object, key, value);
 214         }
 215         break;
 216     }
 217 }
 218
 219 /**
 220  *  * Receives update notifications.
 221  *   */
 222 static void
 223 sp_fespotlight_update(SPObject *object, SPCtx *ctx, guint flags)
 224 {
 225     SPFeSpotLight *feSpotLight = SP_FESPOTLIGHT(object);
 226
 227     if (flags & SP_OBJECT_MODIFIED_FLAG) {
 228         /* do something to trigger redisplay, updates? */
 229         sp_object_read_attr(object, "x");
 230         sp_object_read_attr(object, "y");
 231         sp_object_read_attr(object, "z");
 232         sp_object_read_attr(object, "pointsAtX");
 233         sp_object_read_attr(object, "pointsAtY");
 234         sp_object_read_attr(object, "pointsAtZ");
 235         sp_object_read_attr(object, "specularExponent");
 236         sp_object_read_attr(object, "limitingConeAngle");
 237     }
 238
 239     if (((SPObjectClass *) feSpotLight_parent_class)->update) {
 240         ((SPObjectClass *) feSpotLight_parent_class)->update(object, ctx, flags);
 241     }
 242 }
 243
 244 /**
 245  * Writes its settings to an incoming repr object, if any.
 246  */
 247 static Inkscape::XML::Node *
 248 sp_fespotlight_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
 249 {
 250     SPFeSpotLight *fespotlight = SP_FESPOTLIGHT(object);
 251
 252     if (!repr) {
 253         repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
 254     }
 255
 256     sp_repr_set_css_double(repr, "x", fespotlight->x);
 257     sp_repr_set_css_double(repr, "y", fespotlight->y);
 258     sp_repr_set_css_double(repr, "z", fespotlight->z);
 259     sp_repr_set_css_double(repr, "pointsAtX", fespotlight->pointsAtX);
 260     sp_repr_set_css_double(repr, "pointsAtY", fespotlight->pointsAtY);
 261     sp_repr_set_css_double(repr, "pointsAtZ", fespotlight->pointsAtZ);
 262     sp_repr_set_css_double(repr, "specularExponent", fespotlight->specularExponent);
 263     sp_repr_set_css_double(repr, "limitingConeAngle", fespotlight->limitingConeAngle);
 264
 265     if (((SPObjectClass *) feSpotLight_parent_class)->write) {
 266         ((SPObjectClass *) feSpotLight_parent_class)->write(object, repr, flags);
 267     }
 268
 269     return repr;
 270 }
 271
 272 /*
 273   Local Variables:
 274   mode:c++
 275   c-file-style:"stroustrup"
 276   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 277   indent-tabs-mode:nil
 278   fill-column:99
 279   End:
 280 */
 281 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :