#define __SP_FEDISPLACEMENTMAP_CPP__ /** \file * SVG <feDisplacementMap> implementation. * */ /* * Authors: * hugo Rodrigues <haa.rodrigues@gmail.com> * * Copyright (C) 2006 Hugo Rodrigues * * Released under GNU GPL, read the file 'COPYING' for more information */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "attributes.h" #include "svg/svg.h" #include "sp-fedisplacementmap.h" #include "xml/repr.h" #include "display/nr-filter-displacement-map.h" #include "helper-fns.h" /* FeDisplacementMap base class */ static void sp_feDisplacementMap_class_init(SPFeDisplacementMapClass *klass); static void sp_feDisplacementMap_init(SPFeDisplacementMap *feDisplacementMap); static void sp_feDisplacementMap_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr); static void sp_feDisplacementMap_release(SPObject *object); static void sp_feDisplacementMap_set(SPObject *object, unsigned int key, gchar const *value); static void sp_feDisplacementMap_update(SPObject *object, SPCtx *ctx, guint flags); static void sp_feDisplacementMap_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter); static Inkscape::XML::Node *sp_feDisplacementMap_write(SPObject *object, Inkscape::XML::Node *repr, guint flags); static SPFilterPrimitiveClass *feDisplacementMap_parent_class; GType sp_feDisplacementMap_get_type() { static GType feDisplacementMap_type = 0; if (!feDisplacementMap_type) { GTypeInfo feDisplacementMap_info = { sizeof(SPFeDisplacementMapClass), NULL, NULL, (GClassInitFunc) sp_feDisplacementMap_class_init, NULL, NULL, sizeof(SPFeDisplacementMap), 16, (GInstanceInitFunc) sp_feDisplacementMap_init, NULL, /* value_table */ }; feDisplacementMap_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeDisplacementMap", &feDisplacementMap_info, (GTypeFlags)0); } return feDisplacementMap_type; } static void sp_feDisplacementMap_class_init(SPFeDisplacementMapClass *klass) { SPObjectClass *sp_object_class = (SPObjectClass *)klass; SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass; feDisplacementMap_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass); sp_object_class->build = sp_feDisplacementMap_build; sp_object_class->release = sp_feDisplacementMap_release; sp_object_class->write = sp_feDisplacementMap_write; sp_object_class->set = sp_feDisplacementMap_set; sp_object_class->update = sp_feDisplacementMap_update; sp_primitive_class->build_renderer = sp_feDisplacementMap_build_renderer; } static void sp_feDisplacementMap_init(SPFeDisplacementMap *feDisplacementMap) { feDisplacementMap->scale=0; feDisplacementMap->xChannelSelector = DISPLACEMENTMAP_CHANNEL_ALPHA; feDisplacementMap->yChannelSelector = DISPLACEMENTMAP_CHANNEL_ALPHA; feDisplacementMap->in2 = NR::NR_FILTER_SLOT_NOT_SET; } /** * Reads the Inkscape::XML::Node, and initializes SPFeDisplacementMap variables. For this to get called, * our name must be associated with a repr via "sp_object_type_register". Best done through * sp-object-repr.cpp's repr_name_entries array. */ static void 00093 sp_feDisplacementMap_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr) { if (((SPObjectClass *) feDisplacementMap_parent_class)->build) { ((SPObjectClass *) feDisplacementMap_parent_class)->build(object, document, repr); } /*LOAD ATTRIBUTES FROM REPR HERE*/ sp_object_read_attr(object, "scale"); sp_object_read_attr(object, "in2"); sp_object_read_attr(object, "xChannelSelector"); sp_object_read_attr(object, "yChannelSelector"); } /** * Drops any allocated memory. */ static void 00110 sp_feDisplacementMap_release(SPObject *object) { if (((SPObjectClass *) feDisplacementMap_parent_class)->release) ((SPObjectClass *) feDisplacementMap_parent_class)->release(object); } static FilterDisplacementMapChannelSelector sp_feDisplacementMap_readChannelSelector(gchar const *value) { if (!value) return DISPLACEMENTMAP_CHANNEL_ALPHA; switch (value[0]) { case 'R': return DISPLACEMENTMAP_CHANNEL_RED; break; case 'G': return DISPLACEMENTMAP_CHANNEL_GREEN; break; case 'B': return DISPLACEMENTMAP_CHANNEL_BLUE; break; case 'A': return DISPLACEMENTMAP_CHANNEL_ALPHA; break; default: // error g_warning("Invalid attribute for Channel Selector. Valid modes are 'R', 'G', 'B' or 'A'"); break; } return DISPLACEMENTMAP_CHANNEL_ALPHA; //default is Alpha Channel } /** * Sets a specific value in the SPFeDisplacementMap. */ static void 00144 sp_feDisplacementMap_set(SPObject *object, unsigned int key, gchar const *value) { SPFeDisplacementMap *feDisplacementMap = SP_FEDISPLACEMENTMAP(object); (void)feDisplacementMap; int input; double read_num; FilterDisplacementMapChannelSelector read_selector; switch(key) { /*DEAL WITH SETTING ATTRIBUTES HERE*/ case SP_ATTR_XCHANNELSELECTOR: read_selector = sp_feDisplacementMap_readChannelSelector(value); if (read_selector != feDisplacementMap->xChannelSelector){ feDisplacementMap->xChannelSelector = read_selector; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } break; case SP_ATTR_YCHANNELSELECTOR: read_selector = sp_feDisplacementMap_readChannelSelector(value); if (read_selector != feDisplacementMap->yChannelSelector){ feDisplacementMap->yChannelSelector = read_selector; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } break; case SP_ATTR_SCALE: read_num = helperfns_read_number(value); if (read_num != feDisplacementMap->scale) { feDisplacementMap->scale = read_num; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } break; case SP_ATTR_IN2: input = sp_filter_primitive_read_in(feDisplacementMap, value); if (input != feDisplacementMap->in2) { feDisplacementMap->in2 = input; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } break; default: if (((SPObjectClass *) feDisplacementMap_parent_class)->set) ((SPObjectClass *) feDisplacementMap_parent_class)->set(object, key, value); break; } } /** * Receives update notifications. */ static void 00193 sp_feDisplacementMap_update(SPObject *object, SPCtx *ctx, guint flags) { if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) { /* do something to trigger redisplay, updates? */ } if (((SPObjectClass *) feDisplacementMap_parent_class)->update) { ((SPObjectClass *) feDisplacementMap_parent_class)->update(object, ctx, flags); } } /** * Writes its settings to an incoming repr object, if any. */ static Inkscape::XML::Node * 00211 sp_feDisplacementMap_write(SPObject *object, Inkscape::XML::Node *repr, guint flags) { // Inkscape-only object, not copied during an "plain SVG" dump: if (flags & SP_OBJECT_WRITE_EXT) { if (repr) { // is this sane? //repr->mergeFrom(SP_OBJECT_REPR(object), "id"); } else { repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME } } if (((SPObjectClass *) feDisplacementMap_parent_class)->write) { ((SPObjectClass *) feDisplacementMap_parent_class)->write(object, repr, flags); } return repr; } static void sp_feDisplacementMap_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) { g_assert(primitive != NULL); g_assert(filter != NULL); SPFeDisplacementMap *sp_displacement_map = SP_FEDISPLACEMENTMAP(primitive); int primitive_n = filter->add_primitive(NR::NR_FILTER_DISPLACEMENTMAP); NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n); NR::FilterDisplacementMap *nr_displacement_map = dynamic_cast<NR::FilterDisplacementMap*>(nr_primitive); g_assert(nr_displacement_map != NULL); sp_filter_primitive_renderer_common(primitive, nr_primitive); nr_displacement_map->set_input(1, sp_displacement_map->in2); nr_displacement_map->set_scale(sp_displacement_map->scale); nr_displacement_map->set_channel_selector(0, sp_displacement_map->xChannelSelector); nr_displacement_map->set_channel_selector(1, sp_displacement_map->yChannelSelector); } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :