inkscape/src/sp-polyline.cpp

	sp-polyline.cpp revision 094dc7c249a0253b9bbed67205e341a05b59eca7
#define __SP_POLYLINE_C__

/*
 * SVG <polyline> implementation
 *
 * Authors:
 *   Lauris Kaplinski <lauris@kaplinski.com>
 *
 * Copyright (C) 1999-2002 Lauris Kaplinski
 *
 * Released under GNU GPL, read the file 'COPYING' for more information
 */

#include "config.h"

#include "attributes.h"
#include "sp-polyline.h"
#include "display/curve.h"
#include <glibmm/i18n.h>
#include "xml/repr.h"
#include "document.h"

//static void sp_polyline_class_init (SPPolyLineClass *klass);
//static void sp_polyline_init (SPPolyLine *polyline);

//static void sp_polyline_build (SPObject * object, SPDocument * document, Inkscape::XML::Node * repr);
//static void sp_polyline_set (SPObject *object, unsigned int key, const gchar *value);
//static Inkscape::XML::Node *sp_polyline_write (SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);

//static gchar * sp_polyline_description (SPItem * item);

//static SPShapeClass *parent_class;

SPShapeClass * SPPolyLineClass::static_parent_class=0;

GType
SPPolyLine::sp_polyline_get_type (void)
{
    static GType polyline_type = 0;

    if (!polyline_type) {
        GTypeInfo polyline_info = {
            sizeof (SPPolyLineClass),
            NULL,   /* base_init */
            NULL,   /* base_finalize */
            (GClassInitFunc) SPPolyLineClass::sp_polyline_class_init,
            NULL,   /* klass_finalize */
            NULL,   /* klass_data */
            sizeof (SPPolyLine),
            16, /* n_preallocs */
            (GInstanceInitFunc) sp_polyline_init,
            NULL,   /* value_table */
        };
        polyline_type = g_type_register_static (SP_TYPE_SHAPE, "SPPolyLine", &polyline_info, (GTypeFlags)0);
    }
    return polyline_type;
}

void
SPPolyLineClass::sp_polyline_class_init (SPPolyLineClass *klass)
{
    GObjectClass * gobject_class;
    SPObjectClass * sp_object_class;
    SPItemClass * item_class;

    gobject_class = (GObjectClass *) klass;
    sp_object_class = (SPObjectClass *) klass;
    item_class = (SPItemClass *) klass;

    static_parent_class = (SPShapeClass *)g_type_class_ref (SP_TYPE_SHAPE);

    sp_object_class->build = SPPolyLine::sp_polyline_build;
    sp_object_class->set = SPPolyLine::sp_polyline_set;
    sp_object_class->write = SPPolyLine::sp_polyline_write;

    item_class->description = SPPolyLine::sp_polyline_description;
}

void
SPPolyLine::sp_polyline_init (SPPolyLine * /*polyline*/)
{
    /* Nothing here */
}

void
SPPolyLine::sp_polyline_build (SPObject * object, SPDocument * document, Inkscape::XML::Node * repr)
{

    if (((SPObjectClass *) SPPolyLineClass::static_parent_class)->build)
        ((SPObjectClass *) SPPolyLineClass::static_parent_class)->build (object, document, repr);

    object->readAttr( "points");
}

void
SPPolyLine::sp_polyline_set (SPObject *object, unsigned int key, const gchar *value)
{
    SPPolyLine *polyline;

    polyline = SP_POLYLINE (object);

    switch (key) {
    case SP_ATTR_POINTS: {
        SPCurve * curve;
        const gchar * cptr;
        char * eptr;
        gboolean hascpt;

        if (!value) break;
        curve = new SPCurve ();
        hascpt = FALSE;

        cptr = value;
        eptr = NULL;

        while (TRUE) {
            gdouble x, y;

            while (*cptr != '\0' && (*cptr == ',' || *cptr == '\x20' || *cptr == '\x9' || *cptr == '\xD' || *cptr == '\xA')) {
                cptr++;
            }
            if (!*cptr) break;

            x = g_ascii_strtod (cptr, &eptr);
            if (eptr == cptr) break;
            cptr = eptr;

            while (*cptr != '\0' && (*cptr == ',' || *cptr == '\x20' || *cptr == '\x9' || *cptr == '\xD' || *cptr == '\xA')) {
                cptr++;
            }
            if (!*cptr) break;

            y = g_ascii_strtod (cptr, &eptr);
            if (eptr == cptr) break;
            cptr = eptr;
            if (hascpt) {
                curve->lineto(x, y);
            } else {
                curve->moveto(x, y);
                hascpt = TRUE;
            }
        }

        sp_shape_set_curve (SP_SHAPE (polyline), curve, TRUE);
        curve->unref();
        break;
    }
    default:
        if (((SPObjectClass *) SPPolyLineClass::static_parent_class)->set)
            ((SPObjectClass *) SPPolyLineClass::static_parent_class)->set (object, key, value);
        break;
    }
}

Inkscape::XML::Node *
SPPolyLine::sp_polyline_write (SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
{
    SPPolyLine *polyline;

    polyline = SP_POLYLINE (object);

    if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
        repr = xml_doc->createElement("svg:polyline");
    }

    if (repr != SP_OBJECT_REPR (object)) {
        repr->mergeFrom(SP_OBJECT_REPR (object), "id");
    }

    if (((SPObjectClass *) (SPPolyLineClass::static_parent_class))->write)
        ((SPObjectClass *) (SPPolyLineClass::static_parent_class))->write (object, xml_doc, repr, flags);

    return repr;
}

gchar *
SPPolyLine::sp_polyline_description(SPItem */*item*/)
{
    return g_strdup(_("<b>Polyline</b>"));
}