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#define __SP_FECOMPOSITE_CPP__
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* SVG <feComposite> implementation.
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* hugo Rodrigues <haa.rodrigues@gmail.com>
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* Copyright (C) 2006 Hugo Rodrigues
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* Released under GNU GPL, read the file 'COPYING' for more information
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#include "attributes.h"
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#include "sp-fecomposite.h"
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#include "helper-fns.h"
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#include "display/nr-filter-composite.h"
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/* FeComposite base class */
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static void sp_feComposite_class_init(SPFeCompositeClass *klass);
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static void sp_feComposite_init(SPFeComposite *feComposite);
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static void sp_feComposite_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
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static void sp_feComposite_release(SPObject *object);
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static void sp_feComposite_set(SPObject *object, unsigned int key, gchar const *value);
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static void sp_feComposite_update(SPObject *object, SPCtx *ctx, guint flags);
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static Inkscape::XML::Node *sp_feComposite_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
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static void sp_feComposite_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
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static SPFilterPrimitiveClass *feComposite_parent_class;
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sp_feComposite_get_type()
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static GType feComposite_type = 0;
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if (!feComposite_type) {
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GTypeInfo feComposite_info = {
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sizeof(SPFeCompositeClass),
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(GClassInitFunc) sp_feComposite_class_init,
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sizeof(SPFeComposite),
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(GInstanceInitFunc) sp_feComposite_init,
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NULL, /* value_table */
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feComposite_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeComposite", &feComposite_info, (GTypeFlags)0);
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return feComposite_type;
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sp_feComposite_class_init(SPFeCompositeClass *klass)
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SPObjectClass *sp_object_class = (SPObjectClass *)klass;
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SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
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feComposite_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
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sp_object_class->build = sp_feComposite_build;
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sp_object_class->release = sp_feComposite_release;
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sp_object_class->write = sp_feComposite_write;
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sp_object_class->set = sp_feComposite_set;
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sp_object_class->update = sp_feComposite_update;
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sp_primitive_class->build_renderer = sp_feComposite_build_renderer;
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sp_feComposite_init(SPFeComposite *feComposite)
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feComposite->composite_operator = COMPOSITE_DEFAULT;
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feComposite->in2 = NR::NR_FILTER_SLOT_NOT_SET;
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* Reads the Inkscape::XML::Node, and initializes SPFeComposite variables. For this to get called,
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* our name must be associated with a repr via "sp_object_type_register". Best done through
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* sp-object-repr.cpp's repr_name_entries array.
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sp_feComposite_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
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if (((SPObjectClass *) feComposite_parent_class)->build) {
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((SPObjectClass *) feComposite_parent_class)->build(object, document, repr);
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SPFeComposite *composite = SP_FECOMPOSITE(object);
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sp_object_read_attr(object, "operator");
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if (composite->composite_operator == COMPOSITE_ARITHMETIC) {
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sp_object_read_attr(object, "k1");
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sp_object_read_attr(object, "k2");
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sp_object_read_attr(object, "k3");
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sp_object_read_attr(object, "k4");
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sp_object_read_attr(object, "in2");
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* Drops any allocated memory.
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sp_feComposite_release(SPObject *object)
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if (((SPObjectClass *) feComposite_parent_class)->release)
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((SPObjectClass *) feComposite_parent_class)->release(object);
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static FeCompositeOperator
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sp_feComposite_read_operator(gchar const *value) {
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if (!value) return COMPOSITE_DEFAULT;
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if (strcmp(value, "over") == 0) return COMPOSITE_OVER;
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else if (strcmp(value, "in") == 0) return COMPOSITE_IN;
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else if (strcmp(value, "out") == 0) return COMPOSITE_OUT;
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else if (strcmp(value, "atop") == 0) return COMPOSITE_ATOP;
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else if (strcmp(value, "xor") == 0) return COMPOSITE_XOR;
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else if (strcmp(value, "arithmetic") == 0) return COMPOSITE_ARITHMETIC;
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return COMPOSITE_DEFAULT;
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* Sets a specific value in the SPFeComposite.
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sp_feComposite_set(SPObject *object, unsigned int key, gchar const *value)
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SPFeComposite *feComposite = SP_FECOMPOSITE(object);
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FeCompositeOperator op;
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/*DEAL WITH SETTING ATTRIBUTES HERE*/
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case SP_ATTR_OPERATOR:
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op = sp_feComposite_read_operator(value);
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if (op != feComposite->composite_operator) {
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feComposite->composite_operator = op;
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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k_n = helperfns_read_number(value);
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if (k_n != feComposite->k1) {
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feComposite->k1 = k_n;
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if (feComposite->composite_operator == COMPOSITE_ARITHMETIC)
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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k_n = helperfns_read_number(value);
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if (k_n != feComposite->k2) {
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feComposite->k2 = k_n;
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if (feComposite->composite_operator == COMPOSITE_ARITHMETIC)
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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k_n = helperfns_read_number(value);
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if (k_n != feComposite->k3) {
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feComposite->k3 = k_n;
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if (feComposite->composite_operator == COMPOSITE_ARITHMETIC)
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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k_n = helperfns_read_number(value);
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if (k_n != feComposite->k4) {
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feComposite->k4 = k_n;
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if (feComposite->composite_operator == COMPOSITE_ARITHMETIC)
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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input = sp_filter_primitive_read_in(feComposite, value);
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if (input != feComposite->in2) {
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feComposite->in2 = input;
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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if (((SPObjectClass *) feComposite_parent_class)->set)
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((SPObjectClass *) feComposite_parent_class)->set(object, key, value);
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* Receives update notifications.
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sp_feComposite_update(SPObject *object, SPCtx *ctx, guint flags)
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if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
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SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
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/* do something to trigger redisplay, updates? */
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if (((SPObjectClass *) feComposite_parent_class)->update) {
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((SPObjectClass *) feComposite_parent_class)->update(object, ctx, flags);
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* Writes its settings to an incoming repr object, if any.
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static Inkscape::XML::Node *
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sp_feComposite_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
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// Inkscape-only object, not copied during an "plain SVG" dump:
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if (flags & SP_OBJECT_WRITE_EXT) {
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//repr->mergeFrom(SP_OBJECT_REPR(object), "id");
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repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
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if (((SPObjectClass *) feComposite_parent_class)->write) {
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((SPObjectClass *) feComposite_parent_class)->write(object, repr, flags);
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static void sp_feComposite_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) {
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g_assert(primitive != NULL);
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g_assert(filter != NULL);
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SPFeComposite *sp_composite = SP_FECOMPOSITE(primitive);
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int primitive_n = filter->add_primitive(NR::NR_FILTER_COMPOSITE);
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NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
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NR::FilterComposite *nr_composite = dynamic_cast<NR::FilterComposite*>(nr_primitive);
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g_assert(nr_composite != NULL);
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sp_filter_primitive_renderer_common(primitive, nr_primitive);
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nr_composite->set_operator(sp_composite->composite_operator);
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nr_composite->set_input(1, sp_composite->in2);
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if (sp_composite->composite_operator == COMPOSITE_ARITHMETIC) {
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nr_composite->set_arithmetic(sp_composite->k1, sp_composite->k2,
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sp_composite->k3, sp_composite->k4);
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c-file-style:"stroustrup"
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c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
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// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :