void
LPESimplify::doEffect(SPCurve *curve)
{
Geom::PathVector const original_pathv = pathv_to_linear_and_cubic_beziers(curve->get_pathvector());
gdouble size = Geom::L2(bbox->dimensions());
//size /= Geom::Affine(0,0,0,0,0,0).descrim();
Path* pathliv = Path_for_pathvector(original_pathv);
if(simplify_individual_paths) {
size = Geom::L2(Geom::bounds_fast(original_pathv)->dimensions());
}
size /= sp_lpe_item->i2doc_affine().descrim();
for (int unsigned i = 0; i < steps; i++) {
if ( simplify_just_coalesce ) {
pathliv->Coalesce(threshold * size);
} else {
pathliv->ConvertEvenLines(threshold * size);
pathliv->Simplify(threshold * size);
}
}
Geom::PathVector result = Geom::parse_svg_path(pathliv->svg_dump_path());
generateHelperPathAndSmooth(result);
curve->set_pathvector(result);
SPDesktop* desktop = SP_ACTIVE_DESKTOP;
if(desktop && INK_IS_NODE_TOOL(desktop->event_context)) {
Inkscape::UI::Tools::NodeTool *nt = static_cast<Inkscape::UI::Tools::NodeTool*>(desktop->event_context);
nt->update_helperpath();
}
}
/**
* Called to handle events on knots.
*/
static int sp_knot_handler(SPCanvasItem */*item*/, GdkEvent *event, SPKnot *knot)
{
g_assert(knot != NULL);
g_assert(SP_IS_KNOT(knot));
/* Run client universal event handler, if present */
bool consumed = knot->event_signal.emit(knot, event);
if (consumed) {
return true;
}
knot_ref(knot);
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
switch (event->type) {
case GDK_2BUTTON_PRESS:
if (event->button.button == 1) {
knot->doubleclicked_signal.emit(knot, event->button.state);
grabbed = FALSE;
moved = FALSE;
consumed = TRUE;
}
break;
case GDK_BUTTON_PRESS:
if ((event->button.button == 1) && knot->desktop && knot->desktop->event_context && !knot->desktop->event_context->space_panning) {
Geom::Point const p = knot->desktop->w2d(Geom::Point(event->button.x, event->button.y));
knot->startDragging(p, (gint) event->button.x, (gint) event->button.y, event->button.time);
consumed = TRUE;
}
break;
case GDK_BUTTON_RELEASE:
if (event->button.button == 1 && knot->desktop && knot->desktop->event_context && !knot->desktop->event_context->space_panning) {
// If we have any pending snap event, then invoke it now
if (knot->desktop->event_context->_delayed_snap_event) {
sp_event_context_snap_watchdog_callback(knot->desktop->event_context->_delayed_snap_event);
}
sp_event_context_discard_delayed_snap_event(knot->desktop->event_context);
knot->pressure = 0;
if (transform_escaped) {
transform_escaped = false;
consumed = TRUE;
} else {
knot->setFlag(SP_KNOT_GRABBED, FALSE);
if (!nograb) {
sp_canvas_item_ungrab(knot->item, event->button.time);
}
if (moved) {
knot->setFlag(SP_KNOT_DRAGGING, FALSE);
knot->ungrabbed_signal.emit(knot, event->button.state);
} else {
knot->click_signal.emit(knot, event->button.state);
}
grabbed = FALSE;
moved = FALSE;
consumed = TRUE;
}
}
if (tools_isactive(knot->desktop, TOOLS_NODES)) {
Inkscape::UI::Tools::NodeTool *nt = static_cast<Inkscape::UI::Tools::NodeTool*>(knot->desktop->event_context);
nt->update_helperpath();
}
break;
case GDK_MOTION_NOTIFY:
if (grabbed && knot->desktop && knot->desktop->event_context && !knot->desktop->event_context->space_panning) {
consumed = TRUE;
if ( within_tolerance
&& ( abs( (gint) event->motion.x - xp ) < tolerance )
&& ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
break; // do not drag if we're within tolerance from origin
}
// Once the user has moved farther than tolerance from the original location
// (indicating they intend to move the object, not click), then always process the
// motion notify coordinates as given (no snapping back to origin)
within_tolerance = false;
if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &knot->pressure)) {
knot->pressure = CLAMP (knot->pressure, 0, 1);
} else {
knot->pressure = 0.5;
}
if (!moved) {
knot->grabbed_signal.emit(knot, event->motion.state);
knot->setFlag(SP_KNOT_DRAGGING, TRUE);
}
sp_event_context_snap_delay_handler(knot->desktop->event_context, NULL, knot, (GdkEventMotion *)event, Inkscape::UI::Tools::DelayedSnapEvent::KNOT_HANDLER);
sp_knot_handler_request_position(event, knot);
moved = TRUE;
}
if (tools_isactive(knot->desktop, TOOLS_NODES)) {
Inkscape::UI::Tools::NodeTool *nt = static_cast<Inkscape::UI::Tools::NodeTool*>(knot->desktop->event_context);
nt->update_helperpath();
}
break;
case GDK_ENTER_NOTIFY:
knot->setFlag(SP_KNOT_MOUSEOVER, TRUE);
knot->setFlag(SP_KNOT_GRABBED, FALSE);
if (knot->tip && knot->desktop && knot->desktop->event_context) {
knot->desktop->event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, knot->tip);
}
grabbed = FALSE;
moved = FALSE;
consumed = TRUE;
break;
case GDK_LEAVE_NOTIFY:
knot->setFlag(SP_KNOT_MOUSEOVER, FALSE);
knot->setFlag(SP_KNOT_GRABBED, FALSE);
if (knot->tip && knot->desktop && knot->desktop->event_context) {
knot->desktop->event_context->defaultMessageContext()->clear();
}
grabbed = FALSE;
moved = FALSE;
consumed = TRUE;
break;
case GDK_KEY_PRESS: // keybindings for knot
switch (Inkscape::UI::Tools::get_group0_keyval(&event->key)) {
case GDK_KEY_Escape:
knot->setFlag(SP_KNOT_GRABBED, FALSE);
if (!nograb) {
sp_canvas_item_ungrab(knot->item, event->button.time);
}
if (moved) {
knot->setFlag(SP_KNOT_DRAGGING, FALSE);
knot->ungrabbed_signal.emit(knot, event->button.state);
DocumentUndo::undo(knot->desktop->getDocument());
knot->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Node or handle drag canceled."));
transform_escaped = true;
consumed = TRUE;
}
grabbed = FALSE;
moved = FALSE;
sp_event_context_discard_delayed_snap_event(knot->desktop->event_context);
break;
default:
consumed = FALSE;
break;
}
break;
default:
break;
}
knot_unref(knot);
return consumed || grabbed;
}