#define __SP_FECONVOLVEMATRIX_CPP__ /** \file * SVG <feConvolveMatrix> implementation. * */ /* * Authors: * Felipe CorrĂȘa da Silva Sanches <felipe.sanches@gmail.com> * 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 <string.h> #include <vector> #include "attributes.h" #include "svg/svg.h" #include "convolvematrix.h" #include "helper-fns.h" #include "xml/repr.h" #include "display/nr-filter-convolve-matrix.h" #include <math.h> /* FeConvolveMatrix base class */ static void sp_feConvolveMatrix_class_init(SPFeConvolveMatrixClass *klass); static void sp_feConvolveMatrix_init(SPFeConvolveMatrix *feConvolveMatrix); static void sp_feConvolveMatrix_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr); static void sp_feConvolveMatrix_release(SPObject *object); static void sp_feConvolveMatrix_set(SPObject *object, unsigned int key, gchar const *value); static void sp_feConvolveMatrix_update(SPObject *object, SPCtx *ctx, guint flags); static Inkscape::XML::Node *sp_feConvolveMatrix_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags); static void sp_feConvolveMatrix_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter); static SPFilterPrimitiveClass *feConvolveMatrix_parent_class; GType sp_feConvolveMatrix_get_type() { static GType feConvolveMatrix_type = 0; if (!feConvolveMatrix_type) { GTypeInfo feConvolveMatrix_info = { sizeof(SPFeConvolveMatrixClass), NULL, NULL, (GClassInitFunc) sp_feConvolveMatrix_class_init, NULL, NULL, sizeof(SPFeConvolveMatrix), 16, (GInstanceInitFunc) sp_feConvolveMatrix_init, NULL, /* value_table */ }; feConvolveMatrix_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeConvolveMatrix", &feConvolveMatrix_info, (GTypeFlags)0); } return feConvolveMatrix_type; } static void sp_feConvolveMatrix_class_init(SPFeConvolveMatrixClass *klass) { SPObjectClass *sp_object_class = (SPObjectClass *)klass; SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass; feConvolveMatrix_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass); sp_object_class->build = sp_feConvolveMatrix_build; sp_object_class->release = sp_feConvolveMatrix_release; sp_object_class->write = sp_feConvolveMatrix_write; sp_object_class->set = sp_feConvolveMatrix_set; sp_object_class->update = sp_feConvolveMatrix_update; sp_primitive_class->build_renderer = sp_feConvolveMatrix_build_renderer; } static void sp_feConvolveMatrix_init(SPFeConvolveMatrix *feConvolveMatrix) { //Setting default values: feConvolveMatrix->order.set("3 3"); feConvolveMatrix->targetX = 1; feConvolveMatrix->targetY = 1; feConvolveMatrix->edgeMode = Inkscape::Filters::CONVOLVEMATRIX_EDGEMODE_DUPLICATE; feConvolveMatrix->preserveAlpha = false; //some helper variables: feConvolveMatrix->targetXIsSet = false; feConvolveMatrix->targetYIsSet = false; feConvolveMatrix->kernelMatrixIsSet = false; } /** * Reads the Inkscape::XML::Node, and initializes SPFeConvolveMatrix 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 00106 sp_feConvolveMatrix_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr) { if (((SPObjectClass *) feConvolveMatrix_parent_class)->build) { ((SPObjectClass *) feConvolveMatrix_parent_class)->build(object, document, repr); } /*LOAD ATTRIBUTES FROM REPR HERE*/ sp_object_read_attr(object, "order"); sp_object_read_attr(object, "kernelMatrix"); sp_object_read_attr(object, "divisor"); sp_object_read_attr(object, "bias"); sp_object_read_attr(object, "targetX"); sp_object_read_attr(object, "targetY"); sp_object_read_attr(object, "edgeMode"); sp_object_read_attr(object, "kernelUnitLength"); sp_object_read_attr(object, "preserveAlpha"); } /** * Drops any allocated memory. */ static void 00128 sp_feConvolveMatrix_release(SPObject *object) { if (((SPObjectClass *) feConvolveMatrix_parent_class)->release) ((SPObjectClass *) feConvolveMatrix_parent_class)->release(object); } static Inkscape::Filters::FilterConvolveMatrixEdgeMode sp_feConvolveMatrix_read_edgeMode(gchar const *value){ if (!value) return Inkscape::Filters::CONVOLVEMATRIX_EDGEMODE_DUPLICATE; //duplicate is default switch(value[0]){ case 'd': if (strncmp(value, "duplicate", 9) == 0) return Inkscape::Filters::CONVOLVEMATRIX_EDGEMODE_DUPLICATE; break; case 'w': if (strncmp(value, "wrap", 4) == 0) return Inkscape::Filters::CONVOLVEMATRIX_EDGEMODE_WRAP; break; case 'n': if (strncmp(value, "none", 4) == 0) return Inkscape::Filters::CONVOLVEMATRIX_EDGEMODE_NONE; break; } return Inkscape::Filters::CONVOLVEMATRIX_EDGEMODE_DUPLICATE; //duplicate is default } /** * Sets a specific value in the SPFeConvolveMatrix. */ static void 00154 sp_feConvolveMatrix_set(SPObject *object, unsigned int key, gchar const *value) { SPFeConvolveMatrix *feConvolveMatrix = SP_FECONVOLVEMATRIX(object); (void)feConvolveMatrix; double read_num; int read_int; bool read_bool; Inkscape::Filters::FilterConvolveMatrixEdgeMode read_mode; switch(key) { /*DEAL WITH SETTING ATTRIBUTES HERE*/ case SP_ATTR_ORDER: feConvolveMatrix->order.set(value); //From SVG spec: If <orderY> is not provided, it defaults to <orderX>. if (feConvolveMatrix->order.optNumIsSet() == false) feConvolveMatrix->order.setOptNumber(feConvolveMatrix->order.getNumber()); if (feConvolveMatrix->targetXIsSet == false) feConvolveMatrix->targetX = (int) floor(feConvolveMatrix->order.getNumber()/2); if (feConvolveMatrix->targetYIsSet == false) feConvolveMatrix->targetY = (int) floor(feConvolveMatrix->order.getOptNumber()/2); object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); break; case SP_ATTR_KERNELMATRIX: if (value){ feConvolveMatrix->kernelMatrixIsSet = true; feConvolveMatrix->kernelMatrix = helperfns_read_vector(value, (int) (feConvolveMatrix->order.getNumber() * feConvolveMatrix->order.getOptNumber())); if (! feConvolveMatrix->divisorIsSet) { feConvolveMatrix->divisor = 0; for (unsigned int i = 0; i< feConvolveMatrix->kernelMatrix.size(); i++) feConvolveMatrix->divisor += feConvolveMatrix->kernelMatrix[i]; if (feConvolveMatrix->divisor == 0) feConvolveMatrix->divisor = 1; } object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } else { g_warning("For feConvolveMatrix you MUST pass a kernelMatrix parameter!"); } break; case SP_ATTR_DIVISOR: if (value) { read_num = helperfns_read_number(value); if (read_num == 0) { // This should actually be an error, but given our UI it is more useful to simply set divisor to the default. if (feConvolveMatrix->kernelMatrixIsSet) { for (unsigned int i = 0; i< feConvolveMatrix->kernelMatrix.size(); i++) read_num += feConvolveMatrix->kernelMatrix[i]; } if (read_num == 0) read_num = 1; if (feConvolveMatrix->divisorIsSet || feConvolveMatrix->divisor!=read_num) { feConvolveMatrix->divisorIsSet = false; feConvolveMatrix->divisor = read_num; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } } else if (!feConvolveMatrix->divisorIsSet || feConvolveMatrix->divisor!=read_num) { feConvolveMatrix->divisorIsSet = true; feConvolveMatrix->divisor = read_num; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } } break; case SP_ATTR_BIAS: read_num = 0; if (value) read_num = helperfns_read_number(value); if (read_num != feConvolveMatrix->bias){ feConvolveMatrix->bias = read_num; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } break; case SP_ATTR_TARGETX: if (value) { read_int = (int) helperfns_read_number(value); if (read_int < 0 || read_int > feConvolveMatrix->order.getNumber()){ g_warning("targetX must be a value between 0 and orderX! Assuming floor(orderX/2) as default value."); read_int = (int) floor(feConvolveMatrix->order.getNumber()/2.0); } feConvolveMatrix->targetXIsSet = true; if (read_int != feConvolveMatrix->targetX){ feConvolveMatrix->targetX = read_int; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } } break; case SP_ATTR_TARGETY: if (value) { read_int = (int) helperfns_read_number(value); if (read_int < 0 || read_int > feConvolveMatrix->order.getOptNumber()){ g_warning("targetY must be a value between 0 and orderY! Assuming floor(orderY/2) as default value."); read_int = (int) floor(feConvolveMatrix->order.getOptNumber()/2.0); } feConvolveMatrix->targetYIsSet = true; if (read_int != feConvolveMatrix->targetY){ feConvolveMatrix->targetY = read_int; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } } break; case SP_ATTR_EDGEMODE: read_mode = sp_feConvolveMatrix_read_edgeMode(value); if (read_mode != feConvolveMatrix->edgeMode){ feConvolveMatrix->edgeMode = read_mode; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } break; case SP_ATTR_KERNELUNITLENGTH: feConvolveMatrix->kernelUnitLength.set(value); //From SVG spec: If the <dy> value is not specified, it defaults to the same value as <dx>. if (feConvolveMatrix->kernelUnitLength.optNumIsSet() == false) feConvolveMatrix->kernelUnitLength.setOptNumber(feConvolveMatrix->kernelUnitLength.getNumber()); object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); break; case SP_ATTR_PRESERVEALPHA: read_bool = helperfns_read_bool(value, false); if (read_bool != feConvolveMatrix->preserveAlpha){ feConvolveMatrix->preserveAlpha = read_bool; object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG); } break; default: if (((SPObjectClass *) feConvolveMatrix_parent_class)->set) ((SPObjectClass *) feConvolveMatrix_parent_class)->set(object, key, value); break; } } /** * Receives update notifications. */ static void 00280 sp_feConvolveMatrix_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 *) feConvolveMatrix_parent_class)->update) { ((SPObjectClass *) feConvolveMatrix_parent_class)->update(object, ctx, flags); } } /** * Writes its settings to an incoming repr object, if any. */ static Inkscape::XML::Node * 00298 sp_feConvolveMatrix_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags) { /* TODO: Don't just clone, but create a new repr node and write all * relevant values into it */ if (!repr) { repr = SP_OBJECT_REPR(object)->duplicate(doc); } if (((SPObjectClass *) feConvolveMatrix_parent_class)->write) { ((SPObjectClass *) feConvolveMatrix_parent_class)->write(object, doc, repr, flags); } return repr; } static void sp_feConvolveMatrix_build_renderer(SPFilterPrimitive *primitive, Inkscape::Filters::Filter *filter) { g_assert(primitive != NULL); g_assert(filter != NULL); SPFeConvolveMatrix *sp_convolve = SP_FECONVOLVEMATRIX(primitive); int primitive_n = filter->add_primitive(Inkscape::Filters::NR_FILTER_CONVOLVEMATRIX); Inkscape::Filters::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n); Inkscape::Filters::FilterConvolveMatrix *nr_convolve = dynamic_cast<Inkscape::Filters::FilterConvolveMatrix*>(nr_primitive); g_assert(nr_convolve != NULL); sp_filter_primitive_renderer_common(primitive, nr_primitive); nr_convolve->set_targetX(sp_convolve->targetX); nr_convolve->set_targetY(sp_convolve->targetY); nr_convolve->set_orderX( (int)sp_convolve->order.getNumber() ); nr_convolve->set_orderY( (int)sp_convolve->order.getOptNumber() ); nr_convolve->set_kernelMatrix(sp_convolve->kernelMatrix); nr_convolve->set_divisor(sp_convolve->divisor); nr_convolve->set_bias(sp_convolve->bias); nr_convolve->set_preserveAlpha(sp_convolve->preserveAlpha); } /* 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 :