#ifdef HAVE_CONFIG_H

# include "config.h"

#endif

#include <string.h>

#include <math.h>

#include <vector>

#include "attributes.h"

#include "svg/svg.h"

#include "filters/convolvematrix.h"

#include "helper-fns.h"

#include "xml/repr.h"

#include "display/nr-filter.h"

#include "display/nr-filter-convolve-matrix.h"

G_DEFINE_TYPE(SPFeConvolveMatrix, sp_feConvolveMatrix, G_TYPE_OBJECT);

static void

sp_feConvolveMatrix_class_init(SPFeConvolveMatrixClass *klass)

{

}

CFeConvolveMatrix::CFeConvolveMatrix(SPFeConvolveMatrix* matrix) : CFilterPrimitive(matrix) {

this->spfeconvolvematrix = matrix;

}

CFeConvolveMatrix::~CFeConvolveMatrix() {

}

SPFeConvolveMatrix::SPFeConvolveMatrix() : SPFilterPrimitive() {

SPFeConvolveMatrix* feConvolveMatrix = this;

feConvolveMatrix->cfeconvolvematrix = new CFeConvolveMatrix(feConvolveMatrix);

feConvolveMatrix->typeHierarchy.insert(typeid(SPFeConvolveMatrix));

delete feConvolveMatrix->cfilterprimitive;

feConvolveMatrix->cfilterprimitive = feConvolveMatrix->cfeconvolvematrix;

feConvolveMatrix->cobject = feConvolveMatrix->cfeconvolvematrix;

feConvolveMatrix->bias = 0;

feConvolveMatrix->divisorIsSet = 0;

feConvolveMatrix->divisor = 0;

//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;

}

static void

sp_feConvolveMatrix_init(SPFeConvolveMatrix *feConvolveMatrix)

{

new (feConvolveMatrix) SPFeConvolveMatrix();

}

void CFeConvolveMatrix::build(SPDocument *document, Inkscape::XML::Node *repr) {

CFilterPrimitive::build(document, repr);

SPFeConvolveMatrix* object = this->spfeconvolvematrix;

/*LOAD ATTRIBUTES FROM REPR HERE*/

object->readAttr( "order" );

object->readAttr( "kernelMatrix" );

object->readAttr( "divisor" );

object->readAttr( "bias" );

object->readAttr( "targetX" );

object->readAttr( "targetY" );

object->readAttr( "edgeMode" );

object->readAttr( "kernelUnitLength" );

object->readAttr( "preserveAlpha" );

}

void CFeConvolveMatrix::release() {

CFilterPrimitive::release();

}

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

}

void CFeConvolveMatrix::set(unsigned int key, gchar const *value) {

SPFeConvolveMatrix* object = this->spfeconvolvematrix;

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);

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:

CFilterPrimitive::set(key, value);

break;

}

}

void CFeConvolveMatrix::update(SPCtx *ctx, guint flags) {

SPFeConvolveMatrix* object = this->spfeconvolvematrix;

if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |

SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {

/* do something to trigger redisplay, updates? */

}

CFilterPrimitive::update(ctx, flags);

}

Inkscape::XML::Node* CFeConvolveMatrix::write(Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags) {

SPFeConvolveMatrix* object = this->spfeconvolvematrix;

/* TODO: Don't just clone, but create a new repr node and write all

if (!repr) {

repr = object->getRepr()->duplicate(doc);

}

CFilterPrimitive::write(doc, repr, flags);

return repr;

}

void CFeConvolveMatrix::build_renderer(Inkscape::Filters::Filter* filter) {

SPFeConvolveMatrix* primitive = this->spfeconvolvematrix;

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);

}