#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <gtkmm/box.h>

#include <gtkmm/adjustment.h>

#include <gtkmm/spinbutton.h>

#include "desktop.h"

#include "document.h"

#include "selection.h"

#include "sp-object.h"

#include "2geom/geom.h"

#include "svg/path-string.h"

#include "extension/effect.h"

#include "extension/system.h"

#include "util/units.h"

#include "grid.h"

namespace Inkscape {

namespace Extension {

namespace Internal {

Grid::load (Inkscape::Extension::Extension */*module*/)

{

// std::cout << "Hey, I'm Grid, I'm loading!" << std::endl;

return TRUE;

}

namespace {

Glib::ustring build_lines(Geom::Rect bounding_area,

Geom::Point const &offset, Geom::Point const &spacing)

{

Geom::Point point_offset(0.0, 0.0);

SVG::PathString path_data;

for ( int axis = Geom::X ; axis <= Geom::Y ; ++axis ) {

point_offset[axis] = offset[axis];

for (Geom::Point start_point = bounding_area.min();

start_point[axis] + offset[axis] <= (bounding_area.max())[axis];

start_point[axis] += spacing[axis]) {

Geom::Point end_point = start_point;

end_point[1-axis] = (bounding_area.max())[1-axis];

path_data.moveTo(start_point + point_offset)

.lineTo(end_point + point_offset);

}

}

// std::cout << "Path data:" << path_data.c_str() << std::endl;

return path_data;

}

} // namespace

Grid::effect (Inkscape::Extension::Effect *module, Inkscape::UI::View::View *document, Inkscape::Extension::Implementation::ImplementationDocumentCache * /*docCache*/)

{

Inkscape::Selection * selection = ((SPDesktop *)document)->selection;

Geom::Rect bounding_area = Geom::Rect(Geom::Point(0,0), Geom::Point(100,100));

if (selection->isEmpty()) {

/* get page size */

SPDocument * doc = document->doc();

bounding_area = Geom::Rect( Geom::Point(0,0),

Geom::Point(doc->getWidth().value("px"), doc->getHeight().value("px")) );

} else {

Geom::OptRect bounds = selection->visualBounds();

if (bounds) {

bounding_area = *bounds;

}

gdouble doc_height = (document->doc())->getHeight().value("px");

Geom::Rect temprec = Geom::Rect(Geom::Point(bounding_area.min()[Geom::X], doc_height - bounding_area.min()[Geom::Y]),

Geom::Point(bounding_area.max()[Geom::X], doc_height - bounding_area.max()[Geom::Y]));

bounding_area = temprec;

}

gdouble scale = Inkscape::Util::Quantity::convert(1, "px", &document->doc()->getSVGUnit());

bounding_area *= Geom::Scale(scale);

Geom::Point spacings( scale * module->get_param_float("xspacing"),

scale * module->get_param_float("yspacing") );

gdouble line_width = scale * module->get_param_float("lineWidth");

Geom::Point offsets( scale * module->get_param_float("xoffset"),

scale * module->get_param_float("yoffset") );

Glib::ustring path_data("");

path_data = build_lines(bounding_area, offsets, spacings);

Inkscape::XML::Document * xml_doc = document->doc()->getReprDoc();

//XML Tree being used directly here while it shouldn't be.

Inkscape::XML::Node * current_layer = static_cast<SPDesktop *>(document)->currentLayer()->getRepr();

Inkscape::XML::Node * path = xml_doc->createElement("svg:path");

path->setAttribute("d", path_data.c_str());

Glib::ustring style("fill:none;fill-opacity:0.75000000;fill-rule:evenodd;stroke:#000000;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1.0000000");

style += ";stroke-width:";

gchar floatstring[64];

std::ostringstream stringstream;

stringstream << line_width;

sprintf(floatstring, "%s", stringstream.str().c_str());

style += floatstring;

style += "pt";

path->setAttribute("style", style.c_str());

current_layer->appendChild(path);

Inkscape::GC::release(path);

}

class PrefAdjustment : public Gtk::Adjustment {

/** Extension that this relates to */

Inkscape::Extension::Extension * _ext;

/** The string which represents the parameter */

char * _pref;

public:

/** \brief Make the adjustment using an extension and the string

PrefAdjustment(Inkscape::Extension::Extension * ext, char * pref) :

Gtk::Adjustment(0.0, 0.0, 10.0, 0.1), _ext(ext), _pref(pref) {

this->set_value(_ext->get_param_float(_pref));

this->signal_value_changed().connect(sigc::mem_fun(this, &PrefAdjustment::val_changed));

return;

};

void val_changed (void);

}; /* class PrefAdjustment */

PrefAdjustment::val_changed (void)

{

// std::cout << "Value Changed to: " << this->get_value() << std::endl;

_ext->set_param_float(_pref, this->get_value());

return;

}

Gtk::Widget *

Grid::prefs_effect(Inkscape::Extension::Effect *module, Inkscape::UI::View::View * view, sigc::signal<void> * changeSignal, Inkscape::Extension::Implementation::ImplementationDocumentCache * /*docCache*/)

{

SPDocument * current_document = view->doc();

std::vector<SPItem*> selected = ((SPDesktop *)view)->getSelection()->itemList();

Inkscape::XML::Node * first_select = NULL;

if (!selected.empty()) {

first_select = selected[0]->getRepr();

}

return module->autogui(current_document, first_select, changeSignal);

}

#include "clear-n_.h"

Grid::init (void)

{

Inkscape::Extension::build_from_mem(

"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"

"<name>" N_("Grid") "</name>\n"

"<id>org.inkscape.effect.grid</id>\n"

"<param name=\"lineWidth\" gui-text=\"" N_("Line Width:") "\" type=\"float\">1.0</param>\n"

"<param name=\"xspacing\" gui-text=\"" N_("Horizontal Spacing:") "\" type=\"float\" min=\"0.1\" max=\"1000\">10.0</param>\n"

"<param name=\"yspacing\" gui-text=\"" N_("Vertical Spacing:") "\" type=\"float\" min=\"0.1\" max=\"1000\">10.0</param>\n"

"<param name=\"xoffset\" gui-text=\"" N_("Horizontal Offset:") "\" type=\"float\" min=\"0.0\" max=\"1000\">0.0</param>\n"

"<param name=\"yoffset\" gui-text=\"" N_("Vertical Offset:") "\" type=\"float\" min=\"0.0\" max=\"1000\">0.0</param>\n"

"<effect>\n"

"<object-type>all</object-type>\n"

"<effects-menu>\n"

"<submenu name=\"" N_("Render") "\">\n"

"<submenu name=\"" N_("Grids") "\" />\n"

"</submenu>\n"

"</effects-menu>\n"

"<menu-tip>" N_("Draw a path which is a grid") "</menu-tip>\n"

"</effect>\n"

"</inkscape-extension>\n", new Grid());

return;

}

}; /* namespace Internal */

}; /* namespace Extension */

}; /* namespace Inkscape */