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| author | Johan B. C. Engelen <jbc.engelen@swissonline.ch> | 2007-08-14 20:54:48 +0000 |
|---|---|---|
| committer | johanengelen <johanengelen@users.sourceforge.net> | 2007-08-14 20:54:48 +0000 |
| commit | 55d43e4e27e0ba58a47fad70957dfa989aa173ad (patch) | |
| tree | 2ccfbac1c50023d08ae32975c876fa2478c1ad2a /src/live_effects/lpeobject-reference.cpp | |
| parent | Fix for bug #1752113; added set_preview_widget_active(false) to FileSaveDialo... (diff) | |
| download | inkscape-55d43e4e27e0ba58a47fad70957dfa989aa173ad.tar.gz inkscape-55d43e4e27e0ba58a47fad70957dfa989aa173ad.zip | |
Commit LivePathEffect branch to trunk!
(disabled extension/internal/bitmap/*.* in build.xml to fix compilation)
(bzr r3472)
Diffstat (limited to 'src/live_effects/lpeobject-reference.cpp')
| -rw-r--r-- | src/live_effects/lpeobject-reference.cpp | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/live_effects/lpeobject-reference.cpp b/src/live_effects/lpeobject-reference.cpp new file mode 100644 index 000000000..a5392ef90 --- /dev/null +++ b/src/live_effects/lpeobject-reference.cpp @@ -0,0 +1,161 @@ +/*
+ * The reference corresponding to the inkscape:live-effect attribute
+ *
+ * Copyright (C) 2007 Johan Engelen
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information.
+ */
+
+#include "enums.h"
+#include "live_effects/lpeobject-reference.h"
+#include "live_effects/lpeobject.h"
+
+#include "prefs-utils.h"
+#include "uri.h"
+
+namespace Inkscape {
+
+namespace LivePathEffect {
+
+static void lpeobjectreference_href_changed(SPObject *old_ref, SPObject *ref, LPEObjectReference *lpeobjref);
+static void lpeobjectreference_delete_self(SPObject *deleted, LPEObjectReference *lpeobjref);
+static void lpeobjectreference_source_modified(SPObject *iSource, guint flags, LPEObjectReference *lpeobjref);
+
+LPEObjectReference::LPEObjectReference(SPObject* i_owner) : URIReference(i_owner)
+{
+ owner=i_owner;
+ lpeobject_href = NULL;
+ lpeobject_repr = NULL;
+ lpeobject = NULL;
+ _changed_connection = changedSignal().connect(sigc::bind(sigc::ptr_fun(lpeobjectreference_href_changed), this)); // listening to myself, this should be virtual instead
+
+ user_unlink = NULL;
+}
+
+LPEObjectReference::~LPEObjectReference(void)
+{
+ _changed_connection.disconnect(); // to do before unlinking
+
+ quit_listening();
+ unlink();
+}
+
+bool LPEObjectReference::_acceptObject(SPObject * const obj) const
+{
+ if (IS_LIVEPATHEFFECT(obj)) {
+ SPObject * const owner = getOwner();
+ /* Refuse references to us or to an ancestor. */
+ for ( SPObject *iter = owner ; iter ; iter = SP_OBJECT_PARENT(iter) ) {
+ if ( iter == obj ) {
+ return false;
+ }
+ }
+ return true;
+ } else {
+ return false;
+ }
+}
+
+void
+LPEObjectReference::link(char *to)
+{
+ if ( to == NULL ) {
+ quit_listening();
+ unlink();
+ } else {
+ if ( !lpeobject_href || ( strcmp(to, lpeobject_href) != 0 ) ) {
+ g_free(lpeobject_href);
+ lpeobject_href = g_strdup(to);
+ try {
+ attach(Inkscape::URI(to));
+ } catch (Inkscape::BadURIException &e) {
+ /* TODO: Proper error handling as per
+ * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing.
+ */
+ g_warning("%s", e.what());
+ detach();
+ }
+ }
+ }
+}
+
+void
+LPEObjectReference::unlink(void)
+{
+ g_free(lpeobject_href);
+ lpeobject_href = NULL;
+ detach();
+}
+
+void
+LPEObjectReference::start_listening(LivePathEffectObject* to)
+{
+ if ( to == NULL ) {
+ return;
+ }
+ lpeobject = to;
+ lpeobject_repr = SP_OBJECT_REPR(to);
+ _delete_connection = to->connectDelete(sigc::bind(sigc::ptr_fun(&lpeobjectreference_delete_self), this));
+ _modified_connection = to->connectModified(sigc::bind<2>(sigc::ptr_fun(&lpeobjectreference_source_modified), this));
+}
+
+void
+LPEObjectReference::quit_listening(void)
+{
+ if ( lpeobject == NULL ) {
+ return;
+ }
+ _modified_connection.disconnect();
+ _delete_connection.disconnect();
+ lpeobject_repr = NULL;
+ lpeobject = NULL;
+}
+
+static void
+lpeobjectreference_href_changed(SPObject */*old_ref*/, SPObject */*ref*/, LPEObjectReference *lpeobjref)
+{
+ lpeobjref->quit_listening();
+ LivePathEffectObject *refobj = LIVEPATHEFFECT( lpeobjref->getObject() );
+ if ( refobj ) {
+ lpeobjref->start_listening(refobj);
+ }
+
+ lpeobjref->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+}
+
+static void
+lpeobjectreference_delete_self(SPObject */*deleted*/, LPEObjectReference *lpeobjref)
+{
+ guint const mode = prefs_get_int_attribute("options.cloneorphans", "value", SP_CLONE_ORPHANS_UNLINK);
+
+ if (mode == SP_CLONE_ORPHANS_UNLINK) {
+ // leave it be. just forget about the source
+ lpeobjref->quit_listening();
+ lpeobjref->unlink();
+ if (lpeobjref->user_unlink)
+ lpeobjref->user_unlink(lpeobjref->owner);
+ } else if (mode == SP_CLONE_ORPHANS_DELETE) {
+ lpeobjref->owner->deleteObject();
+ }
+}
+
+static void
+lpeobjectreference_source_modified(SPObject *iSource, guint flags, LPEObjectReference *lpeobjref)
+{
+ lpeobjref->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+}
+
+}; //namespace LivePathEffect
+
+}; // namespace inkscape
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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