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#define INKSCAPE_LPE_POINTPARAM_KNOTHOLDER_C
/*
* Container for PointParamKnotHolder visual handles
*
* Authors:
* Johan Engelen <goejendaagh@zonnet.nl>
*
* Copyright (C) 2008 authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "live_effects/parameter/pointparam-knotholder.h"
#include "live_effects/lpeobject.h"
#include "document.h"
#include "sp-shape.h"
#include "knot.h"
#include "knotholder.h"
#include "knot-holder-entity.h"
#include <libnr/nr-matrix-div.h>
#include <glibmm/i18n.h>
#include <2geom/point.h>
#include <2geom/matrix.h>
#include "svg/stringstream.h"
#include "xml/repr.h"
class SPDesktop;
namespace Inkscape {
static void pointparam_knot_clicked_handler (SPKnot *knot, guint state, PointParamKnotHolder *kh);
static void pointparam_knot_moved_handler(SPKnot *knot, NR::Point const *p, guint state, PointParamKnotHolder *kh);
static void pointparam_knot_ungrabbed_handler (SPKnot *knot, unsigned int state, PointParamKnotHolder *kh);
static void pointparam_knot_holder_class_init(PointParamKnotHolderClass *klass);
void pointparam_knot_holder_dispose(GObject *object);
static SPKnotHolderClass *parent_class;
/**
* Registers PointParamKnotHolder class and returns its type number.
*/
GType pointparam_knot_holder_get_type()
{
static GType type = 0;
if (!type) {
GTypeInfo info = {
sizeof(PointParamKnotHolderClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) pointparam_knot_holder_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (PointParamKnotHolder),
16, /* n_preallocs */
NULL,
NULL
};
type = g_type_register_static (G_TYPE_OBJECT, "InkscapePointParamKnotHolder", &info, (GTypeFlags) 0);
}
return type;
}
/**
* PointParamKnotHolder vtable initialization.
*/
static void pointparam_knot_holder_class_init(PointParamKnotHolderClass *klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
parent_class = (SPKnotHolderClass*) g_type_class_peek_parent(klass);
gobject_class->dispose = pointparam_knot_holder_dispose;
}
PointParamKnotHolder *pointparam_knot_holder_new(SPDesktop *desktop, SPObject *lpeobject, const gchar * key, SPItem *item)
{
g_return_val_if_fail(desktop != NULL, NULL);
g_return_val_if_fail(item != NULL, NULL);
g_return_val_if_fail(SP_IS_ITEM(item), NULL);
PointParamKnotHolder *knot_holder = (PointParamKnotHolder*)g_object_new (INKSCAPE_TYPE_POINTPARAM_KNOT_HOLDER, 0);
knot_holder->desktop = desktop;
knot_holder->item = item;
knot_holder->lpeobject = LIVEPATHEFFECT(lpeobject);
g_object_ref(G_OBJECT(item));
g_object_ref(G_OBJECT(lpeobject));
knot_holder->entity = NULL;
knot_holder->released = NULL;
knot_holder->repr = lpeobject->repr;
knot_holder->repr_key = key;
knot_holder->local_change = FALSE;
return knot_holder;
}
void pointparam_knot_holder_dispose(GObject *object) {
PointParamKnotHolder *kh = G_TYPE_CHECK_INSTANCE_CAST((object), INKSCAPE_TYPE_POINTPARAM_KNOT_HOLDER, PointParamKnotHolder);
g_object_unref(G_OBJECT(kh->item));
g_object_unref(G_OBJECT(kh->lpeobject));
while (kh->entity) {
SPKnotHolderEntity *e = (SPKnotHolderEntity *) kh->entity->data;
g_signal_handler_disconnect(e->knot, e->_click_handler_id);
g_signal_handler_disconnect(e->knot, e->_ungrab_handler_id);
/* unref should call destroy */
g_object_unref(e->knot);
g_free(e);
kh->entity = g_slist_remove(kh->entity, e);
}
}
void
PointParamKnotHolder::add_knot (
Geom::Point & p,
PointParamKnotHolderClickedFunc knot_click,
SPKnotShapeType shape,
SPKnotModeType mode,
guint32 color,
const gchar *tip )
{
/* create new SPKnotHolderEntry */
SPKnotHolderEntity *e = g_new(SPKnotHolderEntity, 1);
e->knot = sp_knot_new(desktop, tip);
e->knot_set = NULL;
e->knot_get = NULL;
if (knot_click) {
e->knot_click = knot_click;
} else {
e->knot_click = NULL;
}
g_object_set(G_OBJECT (e->knot->item), "shape", shape, NULL);
g_object_set(G_OBJECT (e->knot->item), "mode", mode, NULL);
e->knot->fill [SP_KNOT_STATE_NORMAL] = color;
g_object_set (G_OBJECT (e->knot->item), "fill_color", color, NULL);
entity = g_slist_append(entity, e);
/* Move to current point. */
NR::Point dp = p * sp_item_i2d_affine(item);
sp_knot_set_position(e->knot, &dp, SP_KNOT_STATE_NORMAL);
e->handler_id = g_signal_connect(e->knot, "moved", G_CALLBACK(pointparam_knot_moved_handler), this);
e->_click_handler_id = g_signal_connect(e->knot, "clicked", G_CALLBACK(pointparam_knot_clicked_handler), this);
e->_ungrab_handler_id = g_signal_connect(e->knot, "ungrabbed", G_CALLBACK(pointparam_knot_ungrabbed_handler), this);
sp_knot_show(e->knot);
}
static void pointparam_knot_clicked_handler(SPKnot */*knot*/, guint /*state*/, PointParamKnotHolder */*kh*/)
{
}
/**
* \param p In desktop coordinates.
* This function does not write to XML, but tries to write directly to the PointParam to quickly live update the effect
*/
static void pointparam_knot_moved_handler(SPKnot */*knot*/, NR::Point const *p, guint /*state*/, PointParamKnotHolder *kh)
{
NR::Matrix const i2d(sp_item_i2d_affine(kh->item));
NR::Point pos = (*p) / i2d;
Inkscape::SVGOStringStream os;
os << pos.to_2geom();
kh->lpeobject->lpe->setParameter(kh->repr_key, os.str().c_str());
}
static void pointparam_knot_ungrabbed_handler(SPKnot *knot, unsigned int /*state*/, PointParamKnotHolder *kh)
{
NR::Matrix const i2d(sp_item_i2d_affine(kh->item));
NR::Point pos = sp_knot_position(knot) / i2d;
Inkscape::SVGOStringStream os;
os << pos.to_2geom();
kh->repr->setAttribute(kh->repr_key , os.str().c_str());
sp_document_done(SP_OBJECT_DOCUMENT (kh->lpeobject), SP_VERB_CONTEXT_LPE, _("Change LPE point parameter"));
}
} // 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:encoding=utf-8:textwidth=99 :
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