void SPLPEItem::addPathEffect(gchar *value, bool reset)
{
if (value) {
// Apply the path effects here because in the casse of a group, lpe->resetDefaults
// needs that all the subitems have their effects applied
sp_lpe_item_update_patheffect(this, false, true);
// Disable the path effects while preparing the new lpe
sp_lpe_item_enable_path_effects(this, false);
// Add the new reference to the list of LPE references
HRefList hreflist;
for (PathEffectList::const_iterator it = this->path_effect_list->begin(); it != this->path_effect_list->end(); ++it)
{
hreflist.push_back( std::string((*it)->lpeobject_href) );
}
hreflist.push_back( std::string(value) );
std::string hrefs = hreflist_write_svg(hreflist);
this->getRepr()->setAttribute("inkscape:path-effect", hrefs.c_str());
// Make sure that ellipse is stored as <svg:path>
if( SP_IS_GENERICELLIPSE(this)) {
SP_GENERICELLIPSE(this)->write( this->getRepr()->document(), this->getRepr(), SP_OBJECT_WRITE_EXT );
}
// make sure there is an original-d for paths!!!
sp_lpe_item_create_original_path_recursive(this);
LivePathEffectObject *lpeobj = this->path_effect_list->back()->lpeobject;
if (lpeobj && lpeobj->get_lpe()) {
Inkscape::LivePathEffect::Effect *lpe = lpeobj->get_lpe();
// Ask the path effect to reset itself if it doesn't have parameters yet
if (reset) {
// has to be called when all the subitems have their lpes applied
lpe->resetDefaults(this);
}
// perform this once when the effect is applied
lpe->doOnApply(this);
// indicate that all necessary preparations are done and the effect can be performed
lpe->setReady();
}
//Enable the path effects now that everything is ready to apply the new path effect
sp_lpe_item_enable_path_effects(this, true);
// Apply the path effect
sp_lpe_item_update_patheffect(this, true, true);
//fix bug 1219324
if (SP_ACTIVE_DESKTOP ) {
Inkscape::UI::Tools::ToolBase *ec = SP_ACTIVE_DESKTOP->event_context;
if (INK_IS_NODE_TOOL(ec)) {
tools_switch(SP_ACTIVE_DESKTOP, TOOLS_LPETOOL); //mhh
tools_switch(SP_ACTIVE_DESKTOP, TOOLS_NODES);
}
}
}
}
static void sp_simplify_flatten(GtkWidget * /*widget*/, GObject *obj)
{
SPDesktop *desktop = static_cast<SPDesktop *>(g_object_get_data(obj, "desktop"));
std::vector<SPItem *> selected = desktop->getSelection()->itemList();
for (std::vector<SPItem *>::iterator it(selected.begin()); it != selected.end(); ++it){
SPLPEItem* lpeitem = dynamic_cast<SPLPEItem*>(*it);
if (lpeitem && lpeitem->hasPathEffect()){
PathEffectList lpelist = lpeitem->getEffectList();
std::list<Inkscape::LivePathEffect::LPEObjectReference *>::iterator i;
for (i = lpelist.begin(); i != lpelist.end(); ++i) {
LivePathEffectObject *lpeobj = (*i)->lpeobject;
if (lpeobj) {
Inkscape::LivePathEffect::Effect *lpe = lpeobj->get_lpe();
if (dynamic_cast<Inkscape::LivePathEffect::LPESimplify *>(lpe)) {
SPShape * shape = dynamic_cast<SPShape *>(lpeitem);
if(shape){
SPCurve * c = shape->getCurveBeforeLPE();
lpe->doEffect(c);
lpeitem->setCurrentPathEffect(*i);
if (lpelist.size() > 1){
lpeitem->removeCurrentPathEffect(true);
shape->setCurveBeforeLPE(c);
} else {
lpeitem->removeCurrentPathEffect(false);
shape->setCurve(c,0);
}
break;
}
}
}
}
}
}
}
static void sp_pencil_tb_tolerance_value_changed(GtkAdjustment *adj, GObject *tbl)
{
// quit if run by the attr_changed listener
if (g_object_get_data( tbl, "freeze" )) {
return;
}
// in turn, prevent listener from responding
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
g_object_set_data( tbl, "freeze", GINT_TO_POINTER(TRUE) );
prefs->setDouble("/tools/freehand/pencil/tolerance",
gtk_adjustment_get_value(adj));
g_object_set_data( tbl, "freeze", GINT_TO_POINTER(FALSE) );
SPDesktop *desktop = static_cast<SPDesktop *>(g_object_get_data(tbl, "desktop"));
std::vector<SPItem *> selected = desktop->getSelection()->itemList();
for (std::vector<SPItem *>::iterator it(selected.begin()); it != selected.end(); ++it){
SPLPEItem* lpeitem = dynamic_cast<SPLPEItem*>(*it);
if (lpeitem && lpeitem->hasPathEffect()){
Inkscape::LivePathEffect::Effect* simplify = lpeitem->getPathEffectOfType(Inkscape::LivePathEffect::SIMPLIFY);
if(simplify){
Inkscape::LivePathEffect::LPESimplify *lpe_simplify = dynamic_cast<Inkscape::LivePathEffect::LPESimplify*>(simplify->getLPEObj()->get_lpe());
if (lpe_simplify) {
double tol = prefs->getDoubleLimited("/tools/freehand/pencil/tolerance", 10.0, 1.0, 100.0);
tol = tol/(100.0*(102.0-tol));
std::ostringstream ss;
ss << tol;
Inkscape::LivePathEffect::Effect* powerstroke = lpeitem->getPathEffectOfType(Inkscape::LivePathEffect::POWERSTROKE);
bool simplified = false;
if(powerstroke){
Inkscape::LivePathEffect::LPEPowerStroke *lpe_powerstroke = dynamic_cast<Inkscape::LivePathEffect::LPEPowerStroke*>(powerstroke->getLPEObj()->get_lpe());
if(lpe_powerstroke){
lpe_powerstroke->getRepr()->setAttribute("is_visible", "false");
sp_lpe_item_update_patheffect(lpeitem, false, false);
SPShape *sp_shape = dynamic_cast<SPShape *>(lpeitem);
if (sp_shape) {
guint previous_curve_length = sp_shape->getCurve()->get_segment_count();
lpe_simplify->getRepr()->setAttribute("threshold", ss.str());
sp_lpe_item_update_patheffect(lpeitem, false, false);
simplified = true;
guint curve_length = sp_shape->getCurve()->get_segment_count();
std::vector<Geom::Point> ts = lpe_powerstroke->offset_points.data();
double factor = (double)curve_length/ (double)previous_curve_length;
for (size_t i = 0; i < ts.size(); i++) {
ts[i][Geom::X] = ts[i][Geom::X] * factor;
}
lpe_powerstroke->offset_points.param_setValue(ts);
}
lpe_powerstroke->getRepr()->setAttribute("is_visible", "true");
sp_lpe_item_update_patheffect(lpeitem, false, false);
}
}
if(!simplified){
lpe_simplify->getRepr()->setAttribute("threshold", ss.str());
}
}
}
}
}
}
/*
* Checks whether an item has a construction applied as LPE and if so returns the index in
* lpesubtools of this construction
*/
int lpetool_item_has_construction(LpeTool */*lc*/, SPItem *item)
{
if (!SP_IS_LPE_ITEM(item)) {
return -1;
}
Inkscape::LivePathEffect::Effect* lpe = SP_LPE_ITEM(item)->getCurrentLPE();
if (!lpe) {
return -1;
}
return lpetool_mode_to_index(lpe->effectType());
}
/*
* Checks whether an item has a construction applied as LPE and if so returns the index in
* lpesubtools of this construction
*/
int lpetool_item_has_construction(SPLPEToolContext */*lc*/, SPItem *item)
{
if (!SP_IS_LPE_ITEM(item)) {
return -1;
}
Inkscape::LivePathEffect::Effect* lpe = sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item));
if (!lpe) {
return -1;
}
return lpetool_mode_to_index(lpe->effectType());
}
Inkscape::LivePathEffect::Effect*
SPLPEItem::getPathEffectOfType(int type)
{
std::list<Inkscape::LivePathEffect::LPEObjectReference *>::iterator i;
for (i = path_effect_list->begin(); i != path_effect_list->end(); ++i) {
LivePathEffectObject *lpeobj = (*i)->lpeobject;
if (lpeobj) {
Inkscape::LivePathEffect::Effect* lpe = lpeobj->get_lpe();
if (lpe && (lpe->effectType() == type)) {
return lpe;
}
}
}
return NULL;
}
/**
* Calls any registered handlers for the update_patheffect action
*/
void
sp_lpe_item_update_patheffect (SPLPEItem *lpeitem, bool wholetree, bool write)
{
#ifdef SHAPE_VERBOSE
g_message("sp_lpe_item_update_patheffect: %p\n", lpeitem);
#endif
g_return_if_fail (lpeitem != NULL);
g_return_if_fail (SP_IS_LPE_ITEM (lpeitem));
if (!lpeitem->pathEffectsEnabled())
return;
// TODO: hack! this will be removed when path length measuring is reimplemented in a better way
PathEffectList lpelist = lpeitem->getEffectList();
std::list<Inkscape::LivePathEffect::LPEObjectReference *>::iterator i;
for (i = lpelist.begin(); i != lpelist.end(); ++i) {
if ((*i)->lpeobject) {
Inkscape::LivePathEffect::Effect *lpe = (*i)->lpeobject->get_lpe();
if (dynamic_cast<Inkscape::LivePathEffect::LPEPathLength *>(lpe)) {
if (!lpe->isVisible()) {
// we manually disable text for LPEPathLength
// use static_cast, because we already checked for the right type above
static_cast<Inkscape::LivePathEffect::LPEPathLength *>(lpe)->hideCanvasText();
}
}
}
}
SPLPEItem *top = NULL;
if (wholetree) {
SPLPEItem *prev_parent = lpeitem;
SPLPEItem *parent = dynamic_cast<SPLPEItem*>(prev_parent->parent);
while (parent && parent->hasPathEffectRecursive()) {
prev_parent = parent;
parent = dynamic_cast<SPLPEItem*>(prev_parent->parent);
}
top = prev_parent;
}
else {
top = lpeitem;
}
top->update_patheffect(write);
}
/**
* returns true when LPE was successful.
*/
bool SPLPEItem::performPathEffect(SPCurve *curve) {
if (!this) {
return false;
}
if (!curve) {
return false;
}
if (this->hasPathEffect() && this->pathEffectsEnabled()) {
for (PathEffectList::iterator it = this->path_effect_list->begin(); it != this->path_effect_list->end(); ++it)
{
LivePathEffectObject *lpeobj = (*it)->lpeobject;
if (!lpeobj) {
/** \todo Investigate the cause of this.
* For example, this happens when copy pasting an object with LPE applied. Probably because the object is pasted while the effect is not yet pasted to defs, and cannot be found.
*/
g_warning("SPLPEItem::performPathEffect - NULL lpeobj in list!");
return false;
}
Inkscape::LivePathEffect::Effect *lpe = lpeobj->get_lpe();
if (!lpe) {
/** \todo Investigate the cause of this.
* Not sure, but I think this can happen when an unknown effect type is specified...
*/
g_warning("SPLPEItem::performPathEffect - lpeobj with invalid lpe in the stack!");
return false;
}
if (lpe->isVisible()) {
if (lpe->acceptsNumClicks() > 0 && !lpe->isReady()) {
// if the effect expects mouse input before being applied and the input is not finished
// yet, we don't alter the path
return false;
}
// Groups have their doBeforeEffect called elsewhere
if (!SP_IS_GROUP(this)) {
lpe->doBeforeEffect_impl(this);
}
try {
lpe->doEffect(curve);
}
catch (std::exception & e) {
g_warning("Exception during LPE %s execution. \n %s", lpe->getName().c_str(), e.what());
if (SP_ACTIVE_DESKTOP && SP_ACTIVE_DESKTOP->messageStack()) {
SP_ACTIVE_DESKTOP->messageStack()->flash( Inkscape::WARNING_MESSAGE,
_("An exception occurred during execution of the Path Effect.") );
}
return false;
}
if (!SP_IS_GROUP(this)) {
lpe->doAfterEffect(this);
}
}
}
}
return true;
}