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diff --git a/src/sp-lpe-item.cpp b/src/sp-lpe-item.cpp
index eaf92704c4aaa856e5a2f64c8d43494a709c4309..afd36d2ddef30cf1a68293cd86112984c86cf416 100644 (file)
--- a/src/sp-lpe-item.cpp
+++ b/src/sp-lpe-item.cpp
-#define __SP_LPE_ITEM_CPP__
-
/** \file
* Base class for live path effect items
*/
* Authors:
* Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
* Bastien Bouclet <bgkweb@gmail.com>
+ * Abhishek Sharma
*
* Copyright (C) 2008 authors
*
#endif
#include "live_effects/effect.h"
+#include "live_effects/lpe-path_length.h"
#include "live_effects/lpeobject.h"
#include "live_effects/lpeobject-reference.h"
#include "sp-lpe-item.h"
#include "xml/repr.h"
#include "uri.h"
+#include "message-stack.h"
+#include "inkscape.h"
+#include "desktop.h"
+#include "shape-editor.h"
+
+#include <algorithm>
/* LPEItem base class */
static void sp_lpe_item_set(SPObject *object, unsigned int key, gchar const *value);
static void sp_lpe_item_update(SPObject *object, SPCtx *ctx, guint flags);
static void sp_lpe_item_modified (SPObject *object, unsigned int flags);
-static Inkscape::XML::Node *sp_lpe_item_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
+static Inkscape::XML::Node *sp_lpe_item_write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags);
static void sp_lpe_item_child_added (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * ref);
static void sp_lpe_item_remove_child (SPObject * object, Inkscape::XML::Node * child);
-static void lpeobject_ref_changed(SPObject *old_ref, SPObject *ref, SPLPEItem *lpeitem);
+static void sp_lpe_item_enable_path_effects(SPLPEItem *lpeitem, bool enable);
+
static void lpeobject_ref_modified(SPObject *href, guint flags, SPLPEItem *lpeitem);
static void sp_lpe_item_create_original_path_recursive(SPLPEItem *lpeitem);
static void sp_lpe_item_cleanup_original_path_recursive(SPLPEItem *lpeitem);
+typedef std::list<std::string> HRefList;
+static std::string patheffectlist_write_svg(PathEffectList const & list);
+static std::string hreflist_write_svg(HRefList const & list);
static SPItemClass *parent_class;
static void
sp_lpe_item_class_init(SPLPEItemClass *klass)
-{
+{
GObjectClass *gobject_class;
SPObjectClass *sp_object_class;
sp_object_class->write = sp_lpe_item_write;
sp_object_class->child_added = sp_lpe_item_child_added;
sp_object_class->remove_child = sp_lpe_item_remove_child;
-
+
klass->update_patheffect = NULL;
}
static void
sp_lpe_item_init(SPLPEItem *lpeitem)
{
- lpeitem->path_effect_ref = new Inkscape::LivePathEffect::LPEObjectReference(SP_OBJECT(lpeitem));
- new (&lpeitem->lpe_modified_connection) sigc::connection();
+ lpeitem->path_effects_enabled = 1;
+
+ lpeitem->path_effect_list = new PathEffectList();
+ lpeitem->current_path_effect = NULL;
+
+ lpeitem->lpe_modified_connection_list = new std::list<sigc::connection>();
}
static void
static void
sp_lpe_item_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
{
- SP_LPE_ITEM(object)->path_effect_ref->changedSignal().connect(sigc::bind(sigc::ptr_fun(lpeobject_ref_changed), SP_LPE_ITEM(object)));
+ object->readAttr( "inkscape:path-effect" );
- sp_object_read_attr(object, "inkscape:path-effect");
-
if (((SPObjectClass *) parent_class)->build) {
((SPObjectClass *) parent_class)->build(object, document, repr);
}
@@ -137,13 +149,27 @@ sp_lpe_item_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *r
static void
sp_lpe_item_release(SPObject *object)
{
- SPLPEItem *lpeitem;
- lpeitem = (SPLPEItem *) object;
-
- lpeitem->path_effect_ref->detach();
+ SPLPEItem *lpeitem = (SPLPEItem *) object;
- lpeitem->lpe_modified_connection.disconnect();
- lpeitem->lpe_modified_connection.~connection();
+ // disconnect all modified listeners:
+ for (std::list<sigc::connection>::iterator mod_it = lpeitem->lpe_modified_connection_list->begin();
+ mod_it != lpeitem->lpe_modified_connection_list->end(); ++mod_it)
+ {
+ mod_it->disconnect();
+ }
+ delete lpeitem->lpe_modified_connection_list;
+ lpeitem->lpe_modified_connection_list = NULL;
+
+ PathEffectList::iterator it = lpeitem->path_effect_list->begin();
+ while ( it != lpeitem->path_effect_list->end() ) {
+ // unlink and delete all references in the list
+ (*it)->unlink();
+ delete *it;
+ it = lpeitem->path_effect_list->erase(it);
+ }
+ // delete the list itself
+ delete lpeitem->path_effect_list;
+ lpeitem->path_effect_list = NULL;
if (((SPObjectClass *) parent_class)->release)
((SPObjectClass *) parent_class)->release(object);
switch (key) {
case SP_ATTR_INKSCAPE_PATH_EFFECT:
- if ( value && lpeitem->path_effect_ref->lpeobject_href
- && streq(value, lpeitem->path_effect_ref->lpeobject_href) ) {
- /* No change, do nothing. */
- } else {
- if (value) {
- // Now do the attaching, which emits the changed signal.
- try {
- lpeitem->path_effect_ref->link((gchar*)value);
- } catch (Inkscape::BadURIException &e) {
- g_warning("%s", e.what());
- lpeitem->path_effect_ref->detach();
+ {
+ lpeitem->current_path_effect = NULL;
+
+ // Disable the path effects while populating the LPE list
+ sp_lpe_item_enable_path_effects(lpeitem, false);
+
+ // disconnect all modified listeners:
+ for ( std::list<sigc::connection>::iterator mod_it = lpeitem->lpe_modified_connection_list->begin();
+ mod_it != lpeitem->lpe_modified_connection_list->end();
+ ++mod_it)
+ {
+ mod_it->disconnect();
+ }
+ lpeitem->lpe_modified_connection_list->clear();
+ // Clear the path effect list
+ PathEffectList::iterator it = lpeitem->path_effect_list->begin();
+ while ( it != lpeitem->path_effect_list->end() )
+ {
+ (*it)->unlink();
+ delete *it;
+ it = lpeitem->path_effect_list->erase(it);
+ }
+
+ // Parse the contents of "value" to rebuild the path effect reference list
+ if ( value ) {
+ std::istringstream iss(value);
+ std::string href;
+ while (std::getline(iss, href, ';'))
+ {
+ Inkscape::LivePathEffect::LPEObjectReference *path_effect_ref = new Inkscape::LivePathEffect::LPEObjectReference(object);
+ try {
+ path_effect_ref->link(href.c_str());
+ } catch (Inkscape::BadURIException e) {
+ g_warning("BadURIException when trying to find LPE: %s", e.what());
+ path_effect_ref->unlink();
+ delete path_effect_ref;
+ path_effect_ref = NULL;
+ }
+
+ lpeitem->path_effect_list->push_back(path_effect_ref);
+ if ( path_effect_ref->lpeobject && path_effect_ref->lpeobject->get_lpe() ) {
+ // connect modified-listener
+ lpeitem->lpe_modified_connection_list->push_back(
+ path_effect_ref->lpeobject->connectModified(sigc::bind(sigc::ptr_fun(&lpeobject_ref_modified), lpeitem)) );
+ } else {
+ // something has gone wrong in finding the right patheffect.
+ g_warning("Unknown LPE type specified, LPE stack effectively disabled");
+ // keep the effect in the lpestack, so the whole stack is effectively disabled but maintained
+ }
}
- } else {
- // Detach, which emits the changed signal.
- lpeitem->path_effect_ref->detach();
}
+
+ sp_lpe_item_enable_path_effects(lpeitem, true);
}
break;
default:
if (((SPObjectClass *) parent_class)->update) {
((SPObjectClass *) parent_class)->update(object, ctx, flags);
}
+
+ // update the helperpaths of all LPEs applied to the item
+ // TODO: re-add for the new node tool
}
/**
static void
sp_lpe_item_modified (SPObject *object, unsigned int flags)
{
- if (((SPObjectClass *) (parent_class))->modified) {
- (* ((SPObjectClass *) (parent_class))->modified) (object, flags);
- }
+ if (SP_IS_GROUP(object) && (flags & SP_OBJECT_MODIFIED_FLAG) && (flags & SP_OBJECT_USER_MODIFIED_FLAG_B)) {
+ sp_lpe_item_update_patheffect(SP_LPE_ITEM(object), true, true);
+ }
+
+ if (((SPObjectClass *) (parent_class))->modified) {
+ (* ((SPObjectClass *) (parent_class))->modified) (object, flags);
+ }
}
/**
* Writes its settings to an incoming repr object, if any.
*/
static Inkscape::XML::Node *
-sp_lpe_item_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
+sp_lpe_item_write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
{
SPLPEItem *lpeitem = (SPLPEItem *) object;
- if ( sp_lpe_item_has_path_effect(lpeitem) ) {
- repr->setAttribute("inkscape:path-effect", lpeitem->path_effect_ref->lpeobject_href);
- } else {
- repr->setAttribute("inkscape:path-effect", NULL);
+ if (flags & SP_OBJECT_WRITE_EXT) {
+ if ( sp_lpe_item_has_path_effect(lpeitem) ) {
+ std::string href = patheffectlist_write_svg(*lpeitem->path_effect_list);
+ repr->setAttribute("inkscape:path-effect", href.c_str());
+ } else {
+ repr->setAttribute("inkscape:path-effect", NULL);
+ }
}
if (((SPObjectClass *)(parent_class))->write) {
- ((SPObjectClass *)(parent_class))->write(object, repr, flags);
+ ((SPObjectClass *)(parent_class))->write(object, xml_doc, repr, flags);
}
return repr;
}
+/**
+ * returns true when LPE was successful.
+ */
+bool sp_lpe_item_perform_path_effect(SPLPEItem *lpeitem, SPCurve *curve) {
+ if (!lpeitem) return false;
+ if (!curve) return false;
+
+ if (sp_lpe_item_has_path_effect(lpeitem) && sp_lpe_item_path_effects_enabled(lpeitem)) {
+ for (PathEffectList::iterator it = lpeitem->path_effect_list->begin(); it != lpeitem->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("sp_lpe_item_perform_path_effect - 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("sp_lpe_item_perform_path_effect - lpeobj with invalid lpe in the stack!");
+ return false;
+ }
-LivePathEffectObject *
-sp_lpe_item_get_livepatheffectobject(SPLPEItem *lpeitem) {
- if (!lpeitem) return NULL;
-
- if (sp_lpe_item_has_path_effect(lpeitem)) {
- return lpeitem->path_effect_ref->lpeobject;
- } else {
- return NULL;
- }
-}
-
-Inkscape::LivePathEffect::Effect *
-sp_lpe_item_get_livepatheffect(SPLPEItem *lpeitem) {
- if (!lpeitem) return NULL;
-
- LivePathEffectObject * lpeobj = sp_lpe_item_get_livepatheffectobject(lpeitem);
- if (lpeobj)
- return lpeobj->lpe;
- else
- return NULL;
-}
+ 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;
+ }
-void sp_lpe_item_perform_path_effect(SPLPEItem *lpeitem, SPCurve *curve) {
- if (!lpeitem) return;
- if (!curve) return;
+ // Groups have their doBeforeEffect called elsewhere
+ if (!SP_IS_GROUP(lpeitem)) {
+ lpe->doBeforeEffect(lpeitem);
+ }
- if (sp_lpe_item_has_path_effect(lpeitem)) {
- LivePathEffectObject *lpeobj = sp_lpe_item_get_livepatheffectobject(lpeitem);
- lpeobj->lpe->doEffect(curve);
+ 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;
+ }
+ }
+ }
}
-
- SPObject *parent = lpeitem->parent;
- if (parent && SP_IS_LPE_ITEM(parent))
- sp_lpe_item_perform_path_effect(SP_LPE_ITEM(parent), curve);
+
+ return true;
}
/**
* Calls any registered handlers for the update_patheffect action
*/
void
-sp_lpe_item_update_patheffect (SPLPEItem *lpeitem, bool write)
+sp_lpe_item_update_patheffect (SPLPEItem *lpeitem, bool wholetree, bool write)
{
#ifdef SHAPE_VERBOSE
g_message("sp_lpe_item_update_patheffect: %p\n", lpeitem);
g_return_if_fail (lpeitem != NULL);
g_return_if_fail (SP_IS_LPE_ITEM (lpeitem));
- if (sp_lpe_item_has_path_effect(lpeitem)) {
- LivePathEffectObject *lpeobj = sp_lpe_item_get_livepatheffectobject(lpeitem);
- lpeobj->lpe->doBeforeEffect(lpeitem);
+ if (!sp_lpe_item_path_effects_enabled(lpeitem))
+ return;
+
+ // TODO: hack! this will be removed when path length measuring is reimplemented in a better way
+ PathEffectList lpelist = sp_lpe_item_get_effect_list(lpeitem);
+ 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();
+ }
+ }
+ }
}
- if (SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (lpeitem))->update_patheffect) {
- SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (lpeitem))->update_patheffect (lpeitem, write);
- }
-}
+ SPLPEItem *top;
-/**
- * Gets called when (re)attached to another lpeobject.
- */
-static void
-lpeobject_ref_changed(SPObject *old_ref, SPObject *ref, SPLPEItem *lpeitem)
-{
- if (old_ref) {
- sp_signal_disconnect_by_data(old_ref, lpeitem);
+ if (wholetree) {
+ SPObject *prev_parent = lpeitem;
+ SPObject *parent = prev_parent->parent;
+ while (parent && SP_IS_LPE_ITEM(parent) && sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(parent))) {
+ prev_parent = parent;
+ parent = prev_parent->parent;
+ }
+ top = SP_LPE_ITEM(prev_parent);
}
- if ( IS_LIVEPATHEFFECT(ref) && ref != lpeitem )
- {
- lpeitem->lpe_modified_connection.disconnect();
- lpeitem->lpe_modified_connection = ref->connectModified(sigc::bind(sigc::ptr_fun(&lpeobject_ref_modified), lpeitem));
- lpeobject_ref_modified(ref, 0, lpeitem);
+ else {
+ top = lpeitem;
+ }
+
+ if (SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (top))->update_patheffect) {
+ SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (top))->update_patheffect (top, write);
}
}
/**
- * Gets called when lpeobject repr contents change: i.e. parameter change.
+ * Gets called when any of the lpestack's lpeobject repr contents change: i.e. parameter change in any of the stacked LPEs
*/
static void
lpeobject_ref_modified(SPObject */*href*/, guint /*flags*/, SPLPEItem *lpeitem)
{
- sp_lpe_item_update_patheffect (lpeitem, true);
+#ifdef SHAPE_VERBOSE
+ g_message("lpeobject_ref_modified");
+#endif
+ sp_lpe_item_update_patheffect (lpeitem, true, true);
}
static void
}
else if (SP_IS_PATH(lpeitem)) {
Inkscape::XML::Node *repr = SP_OBJECT_REPR(lpeitem);
- if (!sp_lpe_item_has_path_effect_recursive(lpeitem)
+ if (!sp_lpe_item_has_path_effect_recursive(lpeitem)
&& repr->attribute("inkscape:original-d")) {
repr->setAttribute("d", repr->attribute("inkscape:original-d"));
repr->setAttribute("inkscape:original-d", NULL);
}
else {
- sp_lpe_item_update_patheffect(lpeitem, true);
+ sp_lpe_item_update_patheffect(lpeitem, true, true);
}
}
}
-void sp_lpe_item_set_path_effect(SPLPEItem *lpeitem, gchar *value)
+void sp_lpe_item_add_path_effect(SPLPEItem *lpeitem, gchar *value, bool reset)
{
- if (!value) {
- sp_lpe_item_remove_path_effect(lpeitem, false);
- } else {
- SP_OBJECT_REPR(lpeitem)->setAttribute("inkscape:path-effect", value);
-
+ 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(lpeitem, false, true);
+
+ // Disable the path effects while preparing the new lpe
+ sp_lpe_item_enable_path_effects(lpeitem, false);
+
+ // Add the new reference to the list of LPE references
+ HRefList hreflist;
+ for (PathEffectList::const_iterator it = lpeitem->path_effect_list->begin(); it != lpeitem->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);
+
+ SP_OBJECT_REPR(lpeitem)->setAttribute("inkscape:path-effect", hrefs.c_str());
+
// make sure there is an original-d for paths!!!
sp_lpe_item_create_original_path_recursive(lpeitem);
+
+ LivePathEffectObject *lpeobj = lpeitem->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(lpeitem);
+ }
+
+ // perform this once when the effect is applied
+ lpe->doOnApply(SP_LPE_ITEM(lpeitem));
+
+ // 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(lpeitem, true);
+
+ // Apply the path effect
+ sp_lpe_item_update_patheffect(lpeitem, true, true);
}
}
-void sp_lpe_item_set_path_effect(SPLPEItem *lpeitem, LivePathEffectObject * new_lpeobj)
+void sp_lpe_item_add_path_effect(SPLPEItem *lpeitem, LivePathEffectObject * new_lpeobj)
{
const gchar * repr_id = SP_OBJECT_REPR(new_lpeobj)->attribute("id");
gchar *hrefstr = g_strdup_printf("#%s", repr_id);
- sp_lpe_item_set_path_effect(lpeitem, hrefstr);
+ sp_lpe_item_add_path_effect(lpeitem, hrefstr, false);
g_free(hrefstr);
}
-void sp_lpe_item_remove_path_effect(SPLPEItem *lpeitem, bool keep_paths)
+void sp_lpe_item_remove_current_path_effect(SPLPEItem *lpeitem, bool keep_paths)
{
- Inkscape::XML::Node *repr = SP_OBJECT_REPR(lpeitem);
- repr->setAttribute("inkscape:path-effect", NULL);
-
+ Inkscape::LivePathEffect::LPEObjectReference* lperef = sp_lpe_item_get_current_lpereference(lpeitem);
+ if (!lperef)
+ return;
+
+ PathEffectList new_list = *lpeitem->path_effect_list;
+ new_list.remove(lperef); //current lpe ref is always our 'own' pointer from the path_effect_list
+ std::string r = patheffectlist_write_svg(new_list);
+
+ if (!r.empty()) {
+ SP_OBJECT_REPR(lpeitem)->setAttribute("inkscape:path-effect", r.c_str());
+ } else {
+ SP_OBJECT_REPR(lpeitem)->setAttribute("inkscape:path-effect", NULL);
+ }
+
if (!keep_paths) {
sp_lpe_item_cleanup_original_path_recursive(lpeitem);
}
}
+void sp_lpe_item_remove_all_path_effects(SPLPEItem *lpeitem, bool keep_paths)
+{
+ SP_OBJECT_REPR(lpeitem)->setAttribute("inkscape:path-effect", NULL);
+
+ if (!keep_paths) {
+ sp_lpe_item_cleanup_original_path_recursive(lpeitem);
+ }
+}
+
+void sp_lpe_item_down_current_path_effect(SPLPEItem *lpeitem)
+{
+ Inkscape::LivePathEffect::LPEObjectReference* lperef = sp_lpe_item_get_current_lpereference(lpeitem);
+ if (!lperef)
+ return;
+
+ PathEffectList new_list = *lpeitem->path_effect_list;
+ PathEffectList::iterator cur_it = find( new_list.begin(), new_list.end(), lperef );
+ if (cur_it != new_list.end()) {
+ PathEffectList::iterator down_it = cur_it;
+ down_it++;
+ if (down_it != new_list.end()) { // perhaps current effect is already last effect
+ std::iter_swap(cur_it, down_it);
+ }
+ }
+ std::string r = patheffectlist_write_svg(new_list);
+ SP_OBJECT_REPR(lpeitem)->setAttribute("inkscape:path-effect", r.c_str());
+
+ sp_lpe_item_cleanup_original_path_recursive(lpeitem);
+}
+
+void sp_lpe_item_up_current_path_effect(SPLPEItem *lpeitem)
+{
+ Inkscape::LivePathEffect::LPEObjectReference* lperef = sp_lpe_item_get_current_lpereference(lpeitem);
+ if (!lperef)
+ return;
+
+ PathEffectList new_list = *lpeitem->path_effect_list;
+ PathEffectList::iterator cur_it = find( new_list.begin(), new_list.end(), lperef );
+ if (cur_it != new_list.end() && cur_it != new_list.begin()) {
+ PathEffectList::iterator up_it = cur_it;
+ up_it--;
+ std::iter_swap(cur_it, up_it);
+ }
+ std::string r = patheffectlist_write_svg(new_list);
+
+ SP_OBJECT_REPR(lpeitem)->setAttribute("inkscape:path-effect", r.c_str());
+
+ sp_lpe_item_cleanup_original_path_recursive(lpeitem);
+}
+
+/** used for shapes so they can see if they should also disable shape calculation and read from d= */
+bool sp_lpe_item_has_broken_path_effect(SPLPEItem *lpeitem)
+{
+ if (lpeitem->path_effect_list->empty())
+ return false;
+
+ // go through the list; if some are unknown or invalid, return true
+ PathEffectList effect_list = sp_lpe_item_get_effect_list(lpeitem);
+ for (PathEffectList::iterator it = effect_list.begin(); it != effect_list.end(); it++)
+ {
+ LivePathEffectObject *lpeobj = (*it)->lpeobject;
+ if (!lpeobj || !lpeobj->get_lpe())
+ return true;
+ }
+
+ return false;
+}
+
+
bool sp_lpe_item_has_path_effect(SPLPEItem *lpeitem)
{
- return lpeitem->path_effect_ref && lpeitem->path_effect_ref->lpeobject;
+ if (lpeitem->path_effect_list->empty())
+ return false;
+
+ // go through the list; if some are unknown or invalid, we are not an LPE item!
+ PathEffectList effect_list = sp_lpe_item_get_effect_list(lpeitem);
+ for (PathEffectList::iterator it = effect_list.begin(); it != effect_list.end(); it++)
+ {
+ LivePathEffectObject *lpeobj = (*it)->lpeobject;
+ if (!lpeobj || !lpeobj->get_lpe())
+ return false;
+ }
+
+ return true;
}
bool sp_lpe_item_has_path_effect_recursive(SPLPEItem *lpeitem)
}
}
+Inkscape::LivePathEffect::Effect*
+sp_lpe_item_has_path_effect_of_type(SPLPEItem *lpeitem, int type)
+{
+ std::list<Inkscape::LivePathEffect::LPEObjectReference *>::iterator i;
+ for (i = lpeitem->path_effect_list->begin(); i != lpeitem->path_effect_list->end(); ++i) {
+ Inkscape::LivePathEffect::Effect* lpe = (*i)->lpeobject->get_lpe();
+ if (lpe && (lpe->effectType() == type)) {
+ return lpe;
+ }
+ }
+ return NULL;
+}
+
+/* Return false if the item is not a path or already has a shape applied */
+bool sp_lpe_item_can_accept_freehand_shape(SPLPEItem *lpeitem)
+{
+ if (!SP_IS_PATH(lpeitem))
+ return false;
+
+ if (sp_lpe_item_has_path_effect_of_type(lpeitem, Inkscape::LivePathEffect::FREEHAND_SHAPE))
+ return false;
+
+ return true;
+}
+
void sp_lpe_item_edit_next_param_oncanvas(SPLPEItem *lpeitem, SPDesktop *dt)
{
- LivePathEffectObject *lpeobj = sp_lpe_item_get_livepatheffectobject(lpeitem);
- if (lpeobj && lpeobj->lpe) {
- lpeobj->lpe->editNextParamOncanvas(SP_ITEM(lpeitem), dt);
+ Inkscape::LivePathEffect::LPEObjectReference *lperef = sp_lpe_item_get_current_lpereference(lpeitem);
+ if (lperef && lperef->lpeobject && lperef->lpeobject->get_lpe()) {
+ lperef->lpeobject->get_lpe()->editNextParamOncanvas(SP_ITEM(lpeitem), dt);
}
}
@@ -417,9 +678,9 @@ sp_lpe_item_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape:
{
if (((SPObjectClass *) (parent_class))->child_added)
(* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
-
+
if (SP_IS_LPE_ITEM(object) && sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(object))) {
- SPObject *ochild = sp_object_get_child_by_repr(object, child);
+ SPObject *ochild = object->get_child_by_repr(child);
if ( ochild && SP_IS_LPE_ITEM(ochild) ) {
sp_lpe_item_create_original_path_recursive(SP_LPE_ITEM(ochild));
}
sp_lpe_item_remove_child (SPObject * object, Inkscape::XML::Node * child)
{
if (SP_IS_LPE_ITEM(object) && sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(object))) {
- SPObject *ochild = sp_object_get_child_by_repr(object, child);
+ SPObject *ochild = object->get_child_by_repr(child);
if ( ochild && SP_IS_LPE_ITEM(ochild) ) {
sp_lpe_item_cleanup_original_path_recursive(SP_LPE_ITEM(ochild));
}
(* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
}
+static std::string patheffectlist_write_svg(PathEffectList const & list)
+{
+ HRefList hreflist;
+ for (PathEffectList::const_iterator it = list.begin(); it != list.end(); ++it)
+ {
+ hreflist.push_back( std::string((*it)->lpeobject_href) );
+ }
+ return hreflist_write_svg(hreflist);
+}
+
+/**
+ * THE function that should be used to generate any patheffectlist string.
+ * one of the methods to change the effect list:
+ * - create temporary href list
+ * - populate the templist with the effects from the old list that you want to have and their order
+ * - call this function with temp list as param
+ */
+static std::string hreflist_write_svg(HRefList const & list)
+{
+ std::string r;
+ bool semicolon_first = false;
+ for (HRefList::const_iterator it = list.begin(); it != list.end(); ++it)
+ {
+ if (semicolon_first) {
+ r += ';';
+ }
+ semicolon_first = true;
+
+ r += (*it);
+ }
+ return r;
+}
+
+// Return a copy of the effect list
+PathEffectList sp_lpe_item_get_effect_list(SPLPEItem *lpeitem)
+{
+ return *lpeitem->path_effect_list;
+}
+
+Inkscape::LivePathEffect::LPEObjectReference* sp_lpe_item_get_current_lpereference(SPLPEItem *lpeitem)
+{
+ if (!lpeitem->current_path_effect && !lpeitem->path_effect_list->empty()) {
+ sp_lpe_item_set_current_path_effect(lpeitem, lpeitem->path_effect_list->back());
+ }
+
+ return lpeitem->current_path_effect;
+}
+
+Inkscape::LivePathEffect::Effect* sp_lpe_item_get_current_lpe(SPLPEItem *lpeitem)
+{
+ Inkscape::LivePathEffect::LPEObjectReference* lperef = sp_lpe_item_get_current_lpereference(lpeitem);
+
+ if (lperef && lperef->lpeobject)
+ return lperef->lpeobject->get_lpe();
+ else
+ return NULL;
+}
+
+bool sp_lpe_item_set_current_path_effect(SPLPEItem *lpeitem, Inkscape::LivePathEffect::LPEObjectReference* lperef)
+{
+ for (PathEffectList::iterator it = lpeitem->path_effect_list->begin(); it != lpeitem->path_effect_list->end(); it++) {
+ if ((*it)->lpeobject_repr == lperef->lpeobject_repr) {
+ lpeitem->current_path_effect = (*it); // current_path_effect should always be a pointer from the path_effect_list !
+ return true;
+ }
+ }
+
+ return false;
+}
+
+/**
+ * Writes a new "inkscape:path-effect" string to xml, where the old_lpeobjects are substituted by the new ones.
+ * Note that this method messes up the item's \c PathEffectList.
+ */
+void SPLPEItem::replacePathEffects( std::vector<LivePathEffectObject const *> const old_lpeobjs,
+ std::vector<LivePathEffectObject const *> const new_lpeobjs )
+{
+ HRefList hreflist;
+ for (PathEffectList::const_iterator it = this->path_effect_list->begin(); it != this->path_effect_list->end(); ++it)
+ {
+ LivePathEffectObject const * current_lpeobj = (*it)->lpeobject;
+ std::vector<LivePathEffectObject const *>::const_iterator found_it(std::find(old_lpeobjs.begin(), old_lpeobjs.end(), current_lpeobj));
+ if ( found_it != old_lpeobjs.end() ) {
+ std::vector<LivePathEffectObject const *>::difference_type found_index = std::distance (old_lpeobjs.begin(), found_it);
+ const gchar * repr_id = SP_OBJECT_REPR(new_lpeobjs[found_index])->attribute("id");
+ gchar *hrefstr = g_strdup_printf("#%s", repr_id);
+ hreflist.push_back( std::string(hrefstr) );
+ g_free(hrefstr);
+ }
+ else {
+ hreflist.push_back( std::string((*it)->lpeobject_href) );
+ }
+ }
+ std::string r = hreflist_write_svg(hreflist);
+ SP_OBJECT_REPR(this)->setAttribute("inkscape:path-effect", r.c_str());
+}
+
+/**
+ * Check all effects in the stack if they are used by other items, and fork them if so.
+ * It is not recommended to fork the effects by yourself calling LivePathEffectObject::fork_private_if_necessary,
+ * use this method instead.
+ * Returns true if one or more effects were forked; returns false if nothing was done.
+ */
+bool sp_lpe_item_fork_path_effects_if_necessary(SPLPEItem *lpeitem, unsigned int nr_of_allowed_users)
+{
+ bool forked = false;
+
+ if ( sp_lpe_item_has_path_effect(lpeitem) ) {
+ // If one of the path effects is used by 2 or more items, fork it
+ // so that each object has its own independent copy of the effect.
+ // Note: replacing path effects messes up the path effect list
+
+ // Clones of the LPEItem will increase the refcount of the lpeobjects.
+ // Therefore, nr_of_allowed_users should be increased with the number of clones (i.e. refs to the lpeitem)
+ nr_of_allowed_users += SP_OBJECT(lpeitem)->hrefcount;
+
+ std::vector<LivePathEffectObject const *> old_lpeobjs, new_lpeobjs;
+ PathEffectList effect_list = sp_lpe_item_get_effect_list(lpeitem);
+ for (PathEffectList::iterator it = effect_list.begin(); it != effect_list.end(); it++)
+ {
+ LivePathEffectObject *lpeobj = (*it)->lpeobject;
+ if (lpeobj) {
+ LivePathEffectObject *forked_lpeobj = lpeobj->fork_private_if_necessary(nr_of_allowed_users);
+ if (forked_lpeobj != lpeobj) {
+ forked = true;
+ old_lpeobjs.push_back(lpeobj);
+ new_lpeobjs.push_back(forked_lpeobj);
+ }
+ }
+ }
+
+ if (forked) {
+ lpeitem->replacePathEffects(old_lpeobjs, new_lpeobjs);
+ }
+ }
+
+ return forked;
+}
+
+// Enable or disable the path effects of the item.
+// The counter allows nested calls
+static void sp_lpe_item_enable_path_effects(SPLPEItem *lpeitem, bool enable)
+{
+ if (enable) {
+ lpeitem->path_effects_enabled++;
+ }
+ else {
+ lpeitem->path_effects_enabled--;
+ }
+}
+
+// Are the path effects enabled on this item ?
+bool sp_lpe_item_path_effects_enabled(SPLPEItem *lpeitem)
+{
+ return lpeitem->path_effects_enabled > 0;
+}
+
/*
Local Variables:
mode:c++
fill-column:99
End:
*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :