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#define __SP_FECONVOLVEMATRIX_CPP__
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* SVG <feConvolveMatrix> implementation.
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* Felipe Corrêa da Silva Sanches <felipe.sanches@gmail.com>
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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-feconvolvematrix.h"
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#include "helper-fns.h"
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#include "display/nr-filter-convolve-matrix.h"
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/* FeConvolveMatrix base class */
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static void sp_feConvolveMatrix_class_init(SPFeConvolveMatrixClass *klass);
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static void sp_feConvolveMatrix_init(SPFeConvolveMatrix *feConvolveMatrix);
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static void sp_feConvolveMatrix_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
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static void sp_feConvolveMatrix_release(SPObject *object);
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static void sp_feConvolveMatrix_set(SPObject *object, unsigned int key, gchar const *value);
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static void sp_feConvolveMatrix_update(SPObject *object, SPCtx *ctx, guint flags);
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static Inkscape::XML::Node *sp_feConvolveMatrix_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
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static void sp_feConvolveMatrix_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
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static SPFilterPrimitiveClass *feConvolveMatrix_parent_class;
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sp_feConvolveMatrix_get_type()
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static GType feConvolveMatrix_type = 0;
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if (!feConvolveMatrix_type) {
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GTypeInfo feConvolveMatrix_info = {
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sizeof(SPFeConvolveMatrixClass),
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(GClassInitFunc) sp_feConvolveMatrix_class_init,
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sizeof(SPFeConvolveMatrix),
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(GInstanceInitFunc) sp_feConvolveMatrix_init,
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NULL, /* value_table */
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feConvolveMatrix_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeConvolveMatrix", &feConvolveMatrix_info, (GTypeFlags)0);
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return feConvolveMatrix_type;
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sp_feConvolveMatrix_class_init(SPFeConvolveMatrixClass *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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feConvolveMatrix_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
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sp_object_class->build = sp_feConvolveMatrix_build;
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sp_object_class->release = sp_feConvolveMatrix_release;
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sp_object_class->write = sp_feConvolveMatrix_write;
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sp_object_class->set = sp_feConvolveMatrix_set;
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sp_object_class->update = sp_feConvolveMatrix_update;
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sp_primitive_class->build_renderer = sp_feConvolveMatrix_build_renderer;
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sp_feConvolveMatrix_init(SPFeConvolveMatrix *feConvolveMatrix)
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//Setting default values:
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feConvolveMatrix->order.set("3 3");
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feConvolveMatrix->targetX = 1;
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feConvolveMatrix->targetY = 1;
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feConvolveMatrix->edgeMode = NR::CONVOLVEMATRIX_EDGEMODE_DUPLICATE;
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feConvolveMatrix->preserveAlpha = false;
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//some helper variables:
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feConvolveMatrix->targetXIsSet = false;
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feConvolveMatrix->targetYIsSet = false;
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feConvolveMatrix->kernelMatrixIsSet = false;
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* Reads the Inkscape::XML::Node, and initializes SPFeConvolveMatrix 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_feConvolveMatrix_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
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if (((SPObjectClass *) feConvolveMatrix_parent_class)->build) {
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((SPObjectClass *) feConvolveMatrix_parent_class)->build(object, document, repr);
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/*LOAD ATTRIBUTES FROM REPR HERE*/
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sp_object_read_attr(object, "order");
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sp_object_read_attr(object, "kernelMatrix");
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sp_object_read_attr(object, "divisor");
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sp_object_read_attr(object, "bias");
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sp_object_read_attr(object, "targetX");
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sp_object_read_attr(object, "targetY");
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sp_object_read_attr(object, "edgeMode");
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sp_object_read_attr(object, "kernelUnitLength");
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sp_object_read_attr(object, "preserveAlpha");
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* Drops any allocated memory.
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sp_feConvolveMatrix_release(SPObject *object)
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if (((SPObjectClass *) feConvolveMatrix_parent_class)->release)
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((SPObjectClass *) feConvolveMatrix_parent_class)->release(object);
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static NR::FilterConvolveMatrixEdgeMode sp_feConvolveMatrix_read_edgeMode(gchar const *value){
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if (!value) return NR::CONVOLVEMATRIX_EDGEMODE_DUPLICATE; //duplicate is default
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if (strncmp(value, "duplicate", 9) == 0) return NR::CONVOLVEMATRIX_EDGEMODE_DUPLICATE;
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if (strncmp(value, "wrap", 4) == 0) return NR::CONVOLVEMATRIX_EDGEMODE_WRAP;
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if (strncmp(value, "none", 4) == 0) return NR::CONVOLVEMATRIX_EDGEMODE_NONE;
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return NR::CONVOLVEMATRIX_EDGEMODE_DUPLICATE; //duplicate is default
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* Sets a specific value in the SPFeConvolveMatrix.
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sp_feConvolveMatrix_set(SPObject *object, unsigned int key, gchar const *value)
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SPFeConvolveMatrix *feConvolveMatrix = SP_FECONVOLVEMATRIX(object);
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(void)feConvolveMatrix;
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NR::FilterConvolveMatrixEdgeMode read_mode;
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/*DEAL WITH SETTING ATTRIBUTES HERE*/
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feConvolveMatrix->order.set(value);
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//From SVG spec: If <orderY> is not provided, it defaults to <orderX>.
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if (feConvolveMatrix->order.optNumIsSet() == false)
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feConvolveMatrix->order.setOptNumber(feConvolveMatrix->order.getNumber());
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if (feConvolveMatrix->targetXIsSet == false) feConvolveMatrix->targetX = (int) floor(feConvolveMatrix->order.getNumber()/2);
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if (feConvolveMatrix->targetYIsSet == false) feConvolveMatrix->targetY = (int) floor(feConvolveMatrix->order.getOptNumber()/2);
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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case SP_ATTR_KERNELMATRIX:
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feConvolveMatrix->kernelMatrixIsSet = true;
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feConvolveMatrix->kernelMatrix = helperfns_read_vector(value, (int) (feConvolveMatrix->order.getNumber() * feConvolveMatrix->order.getOptNumber()));
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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g_warning("For feConvolveMatrix you MUST pass a kernelMatrix parameter!");
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case SP_ATTR_DIVISOR:
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read_num = helperfns_read_number(value);
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if (feConvolveMatrix->kernelMatrixIsSet){
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g_warning("You shouldn't pass a divisor value equal to 0! Assuming the sum of all values in kernelMatrix as the default value.");
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for (unsigned int i = 0; i< feConvolveMatrix->kernelMatrix.size(); i++)
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read_num += feConvolveMatrix->kernelMatrix[i];
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g_warning("You shouldn't pass a divisor value equal to 0! Assuming 1 as the default value.");
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if (read_num != feConvolveMatrix->divisor){
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feConvolveMatrix->divisor = read_num;
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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if (value) read_num = helperfns_read_number(value);
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if (read_num != feConvolveMatrix->bias){
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feConvolveMatrix->bias = read_num;
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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case SP_ATTR_TARGETX:
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read_int = (int) helperfns_read_number(value);
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if (read_int < 0 || read_int > feConvolveMatrix->order.getNumber()){
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g_warning("targetX must be a value between 0 and orderX! Assuming orderX as default value.");
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read_int = (int) feConvolveMatrix->order.getNumber();
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feConvolveMatrix->targetXIsSet = true;
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if (read_int != feConvolveMatrix->targetX){
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feConvolveMatrix->targetX = read_int;
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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case SP_ATTR_TARGETY:
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read_int = (int) helperfns_read_number(value);
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if (read_int < 0 || read_int > feConvolveMatrix->order.getOptNumber()){
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g_warning("targetY must be a value between 0 and orderY! Assuming orderY as default value.");
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read_int = (int) feConvolveMatrix->order.getOptNumber();
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feConvolveMatrix->targetYIsSet = true;
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if (read_int != feConvolveMatrix->targetY){
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feConvolveMatrix->targetY = read_int;
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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case SP_ATTR_EDGEMODE:
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read_mode = sp_feConvolveMatrix_read_edgeMode(value);
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if (read_mode != feConvolveMatrix->edgeMode){
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feConvolveMatrix->edgeMode = read_mode;
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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case SP_ATTR_KERNELUNITLENGTH:
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feConvolveMatrix->kernelUnitLength.set(value);
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//From SVG spec: If the <dy> value is not specified, it defaults to the same value as <dx>.
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if (feConvolveMatrix->kernelUnitLength.optNumIsSet() == false)
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feConvolveMatrix->kernelUnitLength.setOptNumber(feConvolveMatrix->kernelUnitLength.getNumber());
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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case SP_ATTR_PRESERVEALPHA:
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read_bool = helperfns_read_bool(value, false);
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if (read_bool != feConvolveMatrix->preserveAlpha){
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feConvolveMatrix->preserveAlpha = read_bool;
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object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
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if (((SPObjectClass *) feConvolveMatrix_parent_class)->set)
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((SPObjectClass *) feConvolveMatrix_parent_class)->set(object, key, value);
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* Receives update notifications.
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sp_feConvolveMatrix_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 *) feConvolveMatrix_parent_class)->update) {
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((SPObjectClass *) feConvolveMatrix_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_feConvolveMatrix_write(SPObject *object, Inkscape::XML::Document *doc, 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(doc);
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if (((SPObjectClass *) feConvolveMatrix_parent_class)->write) {
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((SPObjectClass *) feConvolveMatrix_parent_class)->write(object, doc, repr, flags);
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static void sp_feConvolveMatrix_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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SPFeConvolveMatrix *sp_convolve = SP_FECONVOLVEMATRIX(primitive);
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int primitive_n = filter->add_primitive(NR::NR_FILTER_CONVOLVEMATRIX);
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NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
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NR::FilterConvolveMatrix *nr_convolve = dynamic_cast<NR::FilterConvolveMatrix*>(nr_primitive);
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g_assert(nr_convolve != NULL);
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sp_filter_primitive_renderer_common(primitive, nr_primitive);
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nr_convolve->set_targetX(sp_convolve->targetX);
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nr_convolve->set_targetY(sp_convolve->targetY);
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nr_convolve->set_orderX( (int)sp_convolve->order.getNumber() );
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nr_convolve->set_orderY( (int)sp_convolve->order.getOptNumber() );
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nr_convolve->set_kernelMatrix(sp_convolve->kernelMatrix);
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nr_convolve->set_divisor(sp_convolve->divisor);
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nr_convolve->set_bias(sp_convolve->bias);
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nr_convolve->set_preserveAlpha(sp_convolve->preserveAlpha);
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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 :
added
removed
src/sp-feconvolvematrix.cpp
