void
StarKnotHolderEntity1::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint state)
{
SPStar *star = SP_STAR(item);
Geom::Point const s = snap_knot_position(p, state);
Geom::Point d = s - star->center;
double arg1 = atan2(d);
double darg1 = arg1 - star->arg[0];
if (state & GDK_MOD1_MASK) {
star->randomized = darg1/(star->arg[0] - star->arg[1]);
} else if (state & GDK_SHIFT_MASK) {
star->rounded = darg1/(star->arg[0] - star->arg[1]);
} else if (state & GDK_CONTROL_MASK) {
star->r[0] = L2(d);
} else {
star->r[0] = L2(d);
star->arg[0] = arg1;
star->arg[1] += darg1;
}
(static_cast<SPObject *>(star))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
Geom::Point
StarKnotHolderEntity2::knot_get() const
{
g_assert(item != NULL);
SPStar const *star = SP_STAR(item);
return sp_star_get_xy(star, SP_STAR_POINT_KNOT2, 0);
}
static void
sp_star_knot_click(SPItem *item, guint state)
{
SPStar *star = SP_STAR(item);
if (state & GDK_MOD1_MASK) {
star->randomized = 0;
(static_cast<SPObject *>(star))->updateRepr();
} else if (state & GDK_SHIFT_MASK) {
star->rounded = 0;
(static_cast<SPObject *>(star))->updateRepr();
} else if (state & GDK_CONTROL_MASK) {
star->arg[1] = star->arg[0] + M_PI / star->sides;
(static_cast<SPObject *>(star))->updateRepr();
}
}
StarKnotHolder::StarKnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler) :
KnotHolder(desktop, item, relhandler)
{
SPStar *star = SP_STAR(item);
StarKnotHolderEntity1 *entity1 = new StarKnotHolderEntity1();
entity1->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER,
_("Adjust the <b>tip radius</b> of the star or polygon; "
"with <b>Shift</b> to round; with <b>Alt</b> to randomize"));
entity.push_back(entity1);
if (star->flatsided == false) {
StarKnotHolderEntity2 *entity2 = new StarKnotHolderEntity2();
entity2->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER,
_("Adjust the <b>base radius</b> of the star; with <b>Ctrl</b> to keep star rays "
"radial (no skew); with <b>Shift</b> to round; with <b>Alt</b> to randomize"));
entity.push_back(entity2);
}
add_pattern_knotholder();
}
static void
sp_star_drag (SPStarContext * sc, double x, double y, guint state)
{
SPStar *star;
SPDesktop * desktop;
NRPointF p0, p1;
gdouble sides, dx, dy, r1, arg1;
GString * xs, * ys;
gchar status[80];
NRPointF fp;
desktop = SP_EVENT_CONTEXT (sc)->desktop;
if (!sc->item) {
SPRepr * repr, * style;
SPCSSAttr * css;
/* Create object */
repr = sp_repr_new ("polygon");
sp_repr_set_attr (repr, "sodipodi:type", "star");
/* Set style */
style = inkscape_get_repr (INKSCAPE, "tools.shapes.star");
if (style) {
css = sp_repr_css_attr_inherited (style, "style");
sp_repr_css_set (repr, css, "style");
sp_repr_css_attr_unref (css);
}
sc->item = (SPItem *) sp_document_add_repr (SP_DT_DOCUMENT (desktop), repr);
sp_repr_unref (repr);
}
/* This is bit ugly, but so we are */
/* if (state & GDK_CONTROL_MASK) { */
/* } else if (state & GDK_SHIFT_MASK) { */
/* Free movement for corner point */
sp_desktop_dt2root_xy_point (desktop, &fp, sc->center.x, sc->center.y);
p0.x = fp.x;
p0.y = fp.y;
sp_desktop_dt2root_xy_point (desktop, &fp, x, y);
p1.x = fp.x;
p1.y = fp.y;
sp_desktop_free_snap (desktop, &p1);
star = SP_STAR(sc->item);
sides = (gdouble) sc->magnitude;
dx = p1.x - p0.x;
dy = p1.y - p0.y;
r1 = hypot (dx, dy);
arg1 = atan2 (dy, dx);
#if 0
sp_star_set (star, sc->magnitude, p0.x, p0.y, r1, r1 * (sides-2.0)/sides, arg1, arg1 + M_PI/sides);
#else
sp_star_position_set (star, sc->magnitude, p0.x, p0.y, r1, r1 * sc->proportion, arg1, arg1 + M_PI / sides);
#endif
/* status text */
xs = SP_PT_TO_METRIC_STRING (fabs(p0.x), SP_DEFAULT_METRIC);
ys = SP_PT_TO_METRIC_STRING (fabs(p0.y), SP_DEFAULT_METRIC);
sprintf (status, "Draw star at (%s,%s)", xs->str, ys->str);
sp_view_set_status (SP_VIEW (desktop), status, FALSE);
g_string_free (xs, FALSE);
g_string_free (ys, FALSE);
}
