C++ (Cpp) SP_IS_FLOWPARA Examples

Example #1

static Inkscape::XML::Node *
sp_flowpara_write (SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
{
	//	SPFlowpara *group = SP_FLOWPARA (object);

	if ( flags&SP_OBJECT_WRITE_BUILD ) {
		if ( repr == NULL ) repr = xml_doc->createElement("svg:flowPara");
		GSList *l = NULL;
		for (SPObject* child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
			Inkscape::XML::Node* c_repr=NULL;
			if ( SP_IS_FLOWTSPAN (child) ) {
				c_repr = child->updateRepr(xml_doc, NULL, flags);
			} else if ( SP_IS_FLOWPARA (child) ) {
				c_repr = child->updateRepr(xml_doc, NULL, flags);
			} else if ( SP_IS_STRING(child) ) {
				c_repr = xml_doc->createTextNode(SP_STRING(child)->string.c_str());
			}
			if ( c_repr ) l = g_slist_prepend (l, c_repr);
		}
		while ( l ) {
			repr->addChild((Inkscape::XML::Node *) l->data, NULL);
			Inkscape::GC::release((Inkscape::XML::Node *) l->data);
			l = g_slist_remove (l, l->data);
		}
	} else {
		for (SPObject* child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
			if ( SP_IS_FLOWTSPAN (child) ) {
				child->updateRepr(flags);
			} else if ( SP_IS_FLOWPARA (child) ) {
				child->updateRepr(flags);
			} else if ( SP_IS_STRING(child) ) {
				SP_OBJECT_REPR (child)->setContent(SP_STRING(child)->string.c_str());
			}
		}
	}

	if (((SPObjectClass *) (flowpara_parent_class))->write)
		((SPObjectClass *) (flowpara_parent_class))->write (object, xml_doc, repr, flags);

	return repr;
}

Example #2

void
text_flow_into_shape()
{
    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
    if (!desktop)
        return;

    SPDocument *doc = sp_desktop_document (desktop);
    Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);

    Inkscape::Selection *selection = sp_desktop_selection(desktop);

    SPItem *text = text_or_flowtext_in_selection(selection);
    SPItem *shape = shape_in_selection(selection);

    if (!text || !shape || g_slist_length((GSList *) selection->itemList()) < 2) {
        sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>a text</b> and one or more <b>paths or shapes</b> to flow text into frame."));
        return;
    }

    if (SP_IS_TEXT(text)) {
      // remove transform from text, but recursively scale text's fontsize by the expansion
      SP_TEXT(text)->_adjustFontsizeRecursive(text, NR::expansion(SP_ITEM(text)->transform));
      SP_OBJECT_REPR(text)->setAttribute("transform", NULL);
    }

    Inkscape::XML::Node *root_repr = xml_doc->createElement("svg:flowRoot");
    root_repr->setAttribute("xml:space", "preserve"); // we preserve spaces in the text objects we create
    root_repr->setAttribute("style", SP_OBJECT_REPR(text)->attribute("style")); // fixme: transfer style attrs too
    SP_OBJECT_REPR(SP_OBJECT_PARENT(shape))->appendChild(root_repr);
    SPObject *root_object = doc->getObjectByRepr(root_repr);
    g_return_if_fail(SP_IS_FLOWTEXT(root_object));

    Inkscape::XML::Node *region_repr = xml_doc->createElement("svg:flowRegion");
    root_repr->appendChild(region_repr);
    SPObject *object = doc->getObjectByRepr(region_repr);
    g_return_if_fail(SP_IS_FLOWREGION(object));

    /* Add clones */
    for (GSList *items = (GSList *) selection->itemList();
         items != NULL;
         items = items->next) {
        SPItem *item = SP_ITEM(items->data);
        if (SP_IS_SHAPE(item)){
            Inkscape::XML::Node *clone = xml_doc->createElement("svg:use");
            clone->setAttribute("x", "0");
            clone->setAttribute("y", "0");
            clone->setAttribute("xlink:href", g_strdup_printf("#%s", SP_OBJECT_REPR(item)->attribute("id")));

            // add the new clone to the region
            region_repr->appendChild(clone);
        }
    }

    if (SP_IS_TEXT(text)) { // flow from text, as string
        Inkscape::XML::Node *para_repr = xml_doc->createElement("svg:flowPara");
        root_repr->appendChild(para_repr);
        object = doc->getObjectByRepr(para_repr);
        g_return_if_fail(SP_IS_FLOWPARA(object));

        Inkscape::Text::Layout const *layout = te_get_layout(text);
        Glib::ustring text_ustring = sp_te_get_string_multiline(text, layout->begin(), layout->end());

        Inkscape::XML::Node *text_repr = xml_doc->createTextNode(text_ustring.c_str()); // FIXME: transfer all formatting! and convert newlines into flowParas!
        para_repr->appendChild(text_repr);

        Inkscape::GC::release(para_repr);
        Inkscape::GC::release(text_repr);

    } else { // reflow an already flowed text, preserving paras
        for (SPObject *o = SP_OBJECT(text)->children; o != NULL; o = o->next) {
            if (SP_IS_FLOWPARA(o)) {
                Inkscape::XML::Node *para_repr = SP_OBJECT_REPR(o)->duplicate(xml_doc);
                root_repr->appendChild(para_repr);
                object = doc->getObjectByRepr(para_repr);
                g_return_if_fail(SP_IS_FLOWPARA(object));
                Inkscape::GC::release(para_repr);
            }
        }
    }

    SP_OBJECT(text)->deleteObject (true);

    sp_document_done(doc, SP_VERB_CONTEXT_TEXT,
                     _("Flow text into shape"));

    sp_desktop_selection(desktop)->set(SP_ITEM(root_object));

    Inkscape::GC::release(root_repr);
    Inkscape::GC::release(region_repr);
}