1 #define INKSCAPE_LPE_TEXT_LABEL_CPP
2 /** \file
3 * LPE <text_label> implementation
4 */
5 /*
6 * Authors:
7 * Maximilian Albert
8 * Johan Engelen
9 *
10 * Copyright (C) Maximilian Albert 2008 <maximilian.albert@gmail.com>
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 #include "live_effects/lpe-text_label.h"
17 namespace Inkscape {
18 namespace LivePathEffect {
20 LPETextLabel::LPETextLabel(LivePathEffectObject *lpeobject) :
21 Effect(lpeobject),
22 label(_("Label"), _("Text label attached to the path"), "label", &wr, this, "This is a label")
23 {
24 registerParameter( dynamic_cast<Parameter *>(&label) );
25 }
27 LPETextLabel::~LPETextLabel()
28 {
30 }
32 Geom::Piecewise<Geom::D2<Geom::SBasis> >
33 LPETextLabel::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in)
34 {
35 using namespace Geom;
37 double t = (pwd2_in.cuts.front() + pwd2_in.cuts.back()) / 2;
38 Point pos(pwd2_in.valueAt(t));
39 Point dir(unit_vector(derivative(pwd2_in).valueAt(t)));
40 Point n(-rot90(dir) * 30);
42 double angle = angle_between(dir, Point(1,0));
43 label.setPos(pos + n);
44 label.setAnchor(std::sin(angle), -std::cos(angle));
46 return pwd2_in;
47 }
49 } //namespace LivePathEffect
50 } /* namespace Inkscape */
52 /*
53 Local Variables:
54 mode:c++
55 c-file-style:"stroustrup"
56 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
57 indent-tabs-mode:nil
58 fill-column:99
59 End:
60 */
61 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :