void SPLine::set(SPObject *object, unsigned int key, const gchar *value)
{
SPLine * line = SP_LINE(object);
/* fixme: we should really collect updates */
switch (key) {
case SP_ATTR_X1:
line->x1.readOrUnset(value);
object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_Y1:
line->y1.readOrUnset(value);
object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_X2:
line->x2.readOrUnset(value);
object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_Y2:
line->y2.readOrUnset(value);
object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
break;
default:
if (((SPObjectClass *) SPLineClass::static_parent_class)->set) {
((SPObjectClass *) SPLineClass::static_parent_class)->set(object, key, value);
}
break;
}
}
void SPLine::convertToGuides(SPItem *item)
{
SPLine *line = SP_LINE(item);
Geom::Point points[2];
Geom::Affine const i2dt(item->i2dt_affine());
points[0] = Geom::Point(line->x1.computed, line->y1.computed)*i2dt;
points[1] = Geom::Point(line->x2.computed, line->y2.computed)*i2dt;
SPGuide::createSPGuide(item->document, points[0], points[1]);
}
static void
sp_line_set_shape (SPShape *shape)
{
SPLine *line = SP_LINE (shape);
SPCurve *c = new SPCurve ();
c->moveto(line->x1.computed, line->y1.computed);
c->lineto(line->x2.computed, line->y2.computed);
sp_shape_set_curve_insync (shape, c, TRUE); // *_insync does not call update, avoiding infinite recursion when set_shape is called by update
c->unref();
}
void SPLine::setShape(SPShape *shape)
{
SPLine *line = SP_LINE(shape);
SPCurve *c = new SPCurve();
c->moveto(line->x1.computed, line->y1.computed);
c->lineto(line->x2.computed, line->y2.computed);
shape->setCurveInsync(c, TRUE); // *_insync does not call update, avoiding infinite recursion when set_shape is called by update
shape->setCurveBeforeLPE(c);
// LPE's cannot be applied to lines. (the result can (generally) not be represented as SPLine)
c->unref();
}
static void
sp_line_update (SPObject *object, SPCtx *ctx, guint flags)
{
if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
SPLine *line = SP_LINE (object);
SPStyle const *style = object->style;
double const d = 1.0 / NR::expansion(((SPItemCtx const *) ctx)->i2vp);
double const em = style->font_size.computed;
double const ex = em * 0.5; // fixme: get from pango or libnrtype.
line->x1.update(em, ex, d);
line->x2.update(em, ex, d);
line->y1.update(em, ex, d);
line->y2.update(em, ex, d);
sp_shape_set_shape ((SPShape *) object);
}
if (((SPObjectClass *) parent_class)->update)
((SPObjectClass *) parent_class)->update (object, ctx, flags);
}
Geom::Affine SPLine::setTransform(SPItem *item, Geom::Affine const &xform)
{
SPLine *line = SP_LINE(item);
Geom::Point points[2];
points[0] = Geom::Point(line->x1.computed, line->y1.computed);
points[1] = Geom::Point(line->x2.computed, line->y2.computed);
points[0] *= xform;
points[1] *= xform;
line->x1.computed = points[0][Geom::X];
line->y1.computed = points[0][Geom::Y];
line->x2.computed = points[1][Geom::X];
line->y2.computed = points[1][Geom::Y];
item->adjust_stroke(xform.descrim());
SP_OBJECT(item)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
return Geom::identity();
}
Inkscape::XML::Node * SPLine::write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
{
SPLine *line = SP_LINE(object);
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("svg:line");
}
if (repr != object->getRepr()) {
repr->mergeFrom(object->getRepr(), "id");
}
sp_repr_set_svg_double(repr, "x1", line->x1.computed);
sp_repr_set_svg_double(repr, "y1", line->y1.computed);
sp_repr_set_svg_double(repr, "x2", line->x2.computed);
sp_repr_set_svg_double(repr, "y2", line->y2.computed);
if (((SPObjectClass *) (SPLineClass::static_parent_class))->write) {
((SPObjectClass *) (SPLineClass::static_parent_class))->write(object, xml_doc, repr, flags);
}
return repr;
}
void SPLine::update(SPObject *object, SPCtx *ctx, guint flags)
{
if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
SPLine *line = SP_LINE(object);
SPStyle const *style = object->style;
SPItemCtx const *ictx = (SPItemCtx const *) ctx;
double const w = ictx->viewport.width();
double const h = ictx->viewport.height();
double const em = style->font_size.computed;
double const ex = em * 0.5; // fixme: get from pango or libnrtype.
line->x1.update(em, ex, w);
line->x2.update(em, ex, w);
line->y1.update(em, ex, h);
line->y2.update(em, ex, h);
((SPShape *) object)->setShape();
}
if (((SPObjectClass *) SPLineClass::static_parent_class)->update) {
((SPObjectClass *) SPLineClass::static_parent_class)->update(object, ctx, flags);
}
}
static Geom::Matrix
sp_line_set_transform (SPItem *item, Geom::Matrix const &xform)
{
SPLine *line = SP_LINE (item);
Geom::Point points[2];
points[0] = Geom::Point(line->x1.computed, line->y1.computed);
points[1] = Geom::Point(line->x2.computed, line->y2.computed);
points[0] *= xform;
points[1] *= xform;
line->x1.computed = points[0][Geom::X];
line->y1.computed = points[0][Geom::Y];
line->x2.computed = points[1][Geom::X];
line->y2.computed = points[1][Geom::Y];
sp_item_adjust_stroke(item, xform.descrim());
SP_OBJECT (item)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
return Geom::identity();
}