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/**
\file bluredge.cpp
A plug-in to add an effect to blur the edges of an object.
*/
/*
* Authors:
* Ted Gould <ted@gould.cx>
*
* Copyright (C) 2005 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "desktop.h"
#include "selection.h"
#include "helper/action.h"
#include "prefs-utils.h"
#include "path-chemistry.h"
#include "sp-item.h"
#include "util/glib-list-iterators.h"
#include "extension/effect.h"
#include "extension/system.h"
#include "bluredge.h"
namespace Inkscape {
namespace Extension {
namespace Internal {
/**
\brief A function to allocated anything -- just an example here
\param module Unused
\return Whether the load was sucessful
*/
bool
BlurEdge::load (Inkscape::Extension::Extension *module)
{
// std::cout << "Hey, I'm Blur Edge, I'm loading!" << std::endl;
return TRUE;
}
/**
\brief This actually blurs the edge.
\param module The effect that was called (unused)
\param document What should be edited.
*/
void
BlurEdge::effect (Inkscape::Extension::Effect *module, Inkscape::UI::View::View *document)
{
Inkscape::Selection * selection = ((SPDesktop *)document)->selection;
float width = module->get_param_float("blur-width");
int steps = module->get_param_int("num-steps");
double old_offset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
using Inkscape::Util::GSListConstIterator;
// TODO need to properly refcount the items, at least
std::list<SPItem *> items;
items.insert<GSListConstIterator<SPItem *> >(items.end(), selection->itemList(), NULL);
selection->clear();
std::list<SPItem *> new_items;
for(std::list<SPItem *>::iterator item = items.begin();
item != items.end(); item++) {
SPItem * spitem = *item;
Inkscape::XML::Node * new_items[steps];
Inkscape::XML::Node * new_group = sp_repr_new("svg:g");
(SP_OBJECT_REPR(spitem)->parent())->appendChild(new_group);
/** \todo Need to figure out how to get from XML::Node to SPItem */
/* new_items.push_back(); */
double orig_opacity = sp_repr_css_double_property(sp_repr_css_attr(SP_OBJECT_REPR(spitem), "style"), "opacity", 1.0);
char opacity_string[64];
g_ascii_formatd(opacity_string, sizeof(opacity_string), "%f",
orig_opacity / (steps));
for (int i = 0; i < steps; i++) {
double offset = (width / (float)(steps - 1) * (float)i) - (width / 2.0);
new_items[i] = (SP_OBJECT_REPR(spitem))->duplicate();
SPCSSAttr * css = sp_repr_css_attr(new_items[i], "style");
sp_repr_css_set_property(css, "opacity", opacity_string);
sp_repr_css_change(new_items[i], css, "style");
new_group->appendChild(new_items[i]);
selection->add(new_items[i]);
sp_selected_path_to_curves();
if (offset < 0.0) {
/* Doing an inset here folks */
offset *= -1.0;
prefs_set_double_attribute("options.defaultoffsetwidth", "value", offset);
sp_action_perform(Inkscape::Verb::get(SP_VERB_SELECTION_INSET)->get_action(document), NULL);
} else if (offset == 0.0) {
} else {
prefs_set_double_attribute("options.defaultoffsetwidth", "value", offset);
sp_action_perform(Inkscape::Verb::get(SP_VERB_SELECTION_OFFSET)->get_action(document), NULL);
}
selection->clear();
}
}
prefs_set_double_attribute("options.defaultoffsetwidth", "value", old_offset);
selection->clear();
selection->add(items.begin(), items.end());
selection->add(new_items.begin(), new_items.end());
return;
}
Gtk::Widget *
BlurEdge::prefs_effect(Inkscape::Extension::Effect * module, Inkscape::UI::View::View * view)
{
return module->autogui();
}
void
BlurEdge::init (void)
{
Inkscape::Extension::build_from_mem(
"<inkscape-extension>\n"
"<name>Blur Edge</name>\n"
"<id>org.inkscape.effect.bluredge</id>\n"
"<param name=\"blur-width\" gui-text=\"Blur Width\" type=\"float\" min=\"1.0\" max=\"50.0\">1.0</param>\n"
"<param name=\"num-steps\" gui-text=\"Number of Steps\" type=\"int\" min=\"5\" max=\"100\">11</param>\n"
"<effect>\n"
"<object-type>all</object-type>\n"
"</effect>\n"
"</inkscape-extension>\n" , new BlurEdge());
return;
}
}; /* namespace Internal */
}; /* namespace Extension */
}; /* namespace Inkscape */
/*
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 :
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