C++ SPDocument::getReprDoc方法代码示例

Inkscape::XML::Node *box3d_side_convert_to_path(Box3DSide *side) {
    // TODO: Copy over all important attributes (see sp_selected_item_to_curved_repr() for an example)
    SPDocument *doc = side->document;
    Inkscape::XML::Document *xml_doc = doc->getReprDoc();

    Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
    repr->setAttribute("d", side->getAttribute("d"));
    repr->setAttribute("style", side->getAttribute("style"));

    return repr;
}

SPItem *create_flowtext_with_internal_frame (SPDesktop *desktop, Geom::Point p0, Geom::Point p1)
{
    SPDocument *doc = sp_desktop_document (desktop);

    Inkscape::XML::Document *xml_doc = doc->getReprDoc();
    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
    SPItem *ft_item = SP_ITEM(desktop->currentLayer()->appendChildRepr(root_repr));
    SPObject *root_object = doc->getObjectByRepr(root_repr);
    g_assert(SP_IS_FLOWTEXT(root_object));

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

    Inkscape::XML::Node *rect_repr = xml_doc->createElement("svg:rect"); // FIXME: use path!!! after rects are converted to use path
    region_repr->appendChild(rect_repr);

    SPRect *rect = SP_RECT(doc->getObjectByRepr(rect_repr));

    p0 *= desktop->dt2doc();
    p1 *= desktop->dt2doc();
    using Geom::X;
    using Geom::Y;
    Geom::Coord const x0 = MIN(p0[X], p1[X]);
    Geom::Coord const y0 = MIN(p0[Y], p1[Y]);
    Geom::Coord const x1 = MAX(p0[X], p1[X]);
    Geom::Coord const y1 = MAX(p0[Y], p1[Y]);
    Geom::Coord const w  = x1 - x0;
    Geom::Coord const h  = y1 - y0;

    rect->setPosition(x0, y0, w, h);
    rect->updateRepr();

    Inkscape::XML::Node *para_repr = xml_doc->createElement("svg:flowPara");
    root_repr->appendChild(para_repr);
    SPObject *para_object = doc->getObjectByRepr(para_repr);
    g_assert(SP_IS_FLOWPARA(para_object));

    Inkscape::XML::Node *text = xml_doc->createTextNode("");
    para_repr->appendChild(text);

    Inkscape::GC::release(root_repr);
    Inkscape::GC::release(region_repr);
    Inkscape::GC::release(para_repr);
    Inkscape::GC::release(rect_repr);

    ft_item->transform = SP_ITEM(desktop->currentLayer())->i2doc_affine().inverse();

    return ft_item;
}

static void
sp_gradient_selector_add_vector_clicked (GtkWidget */*w*/, SPGradientSelector *sel)
{
    SPDocument *doc = sp_gradient_vector_selector_get_document (SP_GRADIENT_VECTOR_SELECTOR (sel->vectors));

    if (!doc)
        return;

    SPGradient *gr = sp_gradient_vector_selector_get_gradient( SP_GRADIENT_VECTOR_SELECTOR (sel->vectors));
    Inkscape::XML::Document *xml_doc = doc->getReprDoc();

    Inkscape::XML::Node *repr = NULL;

    if (gr) {
        repr = gr->getRepr()->duplicate(xml_doc);
    } else {
        repr = xml_doc->createElement("svg:linearGradient");
        Inkscape::XML::Node *stop = xml_doc->createElement("svg:stop");
        stop->setAttribute("offset", "0");
        stop->setAttribute("style", "stop-color:#000;stop-opacity:1;");
        repr->appendChild(stop);
        Inkscape::GC::release(stop);
        stop = xml_doc->createElement("svg:stop");
        stop->setAttribute("offset", "1");
        stop->setAttribute("style", "stop-color:#fff;stop-opacity:1;");
        repr->appendChild(stop);
        Inkscape::GC::release(stop);
    }

    doc->getDefs()->getRepr()->addChild(repr, NULL);

    Glib::ustring old_id = gr->getId();

    gr = SP_GRADIENT(doc->getObjectByRepr(repr));

    // Rename the new gradients id to be similar to the cloned gradients
    rename_id(gr, old_id);

    sp_gradient_vector_selector_set_gradient( SP_GRADIENT_VECTOR_SELECTOR (sel->vectors), doc, gr);

    sel->selectGradientInTree(gr);

    Inkscape::GC::release(repr);
}

SPDocument *
GdkpixbufInput::open(Inkscape::Extension::Input *mod, char const *uri)
{
    // Determine whether the image should be embedded
    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
    bool ask = prefs->getBool("/dialogs/import/ask");
    Glib::ustring link  = prefs->getString("/dialogs/import/link");
    bool forcexdpi = prefs->getBool("/dialogs/import/forcexdpi");
    Glib::ustring scale = prefs->getString("/dialogs/import/scale");
    // std::cout << "GkdpixbufInput::open: "
    //           << " ask: " << ask
    //           << ", link: " << link
    //           << ", forcexdpi: " << forcexdpi
    //           << ", scale: " << scale << std::endl;
    // std::cout << "     in  preferences: "
    //           << " ask: " << !mod->get_param_bool("do_not_ask")
    //           << ", link: " << mod->get_param_optiongroup("link")
    //           << ", mod_dpi: " << mod->get_param_optiongroup("dpi")
    //           << ", scale: " << mod->get_param_optiongroup("scale") << std::endl;
    if( ask ) {
        Glib::ustring mod_link = mod->get_param_optiongroup("link");
        Glib::ustring mod_dpi = mod->get_param_optiongroup("dpi");
        bool mod_forcexdpi = ( mod_dpi.compare( "from_default" ) == 0 );
        Glib::ustring mod_scale = mod->get_param_optiongroup("scale");
        if( link.compare( mod_link ) != 0 ) {
            link = mod_link;
        }
        prefs->setString("/dialogs/import/link", link );
        if( forcexdpi != mod_forcexdpi ) {
            forcexdpi = mod_forcexdpi;
        }
        prefs->setBool("/dialogs/import/forcexdpi", forcexdpi );
        if( scale.compare( mod_scale ) != 0 ) {
            scale = mod_scale;
        }
        prefs->setString("/dialogs/import/scale", scale );
        prefs->setBool("/dialogs/import/ask", !mod->get_param_bool("do_not_ask") );
    }
    bool embed = ( link.compare( "embed" ) == 0 );

    SPDocument *doc = NULL;
    boost::scoped_ptr<Inkscape::Pixbuf> pb(Inkscape::Pixbuf::create_from_file(uri));

    // TODO: the pixbuf is created again from the base64-encoded attribute in SPImage.
    // Find a way to create the pixbuf only once.

    if (pb) {
        doc = SPDocument::createNewDoc(NULL, TRUE, TRUE);
        bool saved = DocumentUndo::getUndoSensitive(doc);
        DocumentUndo::setUndoSensitive(doc, false); // no need to undo in this temporary document

        double width = pb->width();
        double height = pb->height();
        double defaultxdpi = prefs->getDouble("/dialogs/import/defaultxdpi/value", Inkscape::Util::Quantity::convert(1, "in", "px"));
        //bool forcexdpi = prefs->getBool("/dialogs/import/forcexdpi");
        ImageResolution *ir = 0;
        double xscale = 1;
        double yscale = 1;


        if (!ir && !forcexdpi) {
            ir = new ImageResolution(uri);
        }
        if (ir && ir->ok()) {
            xscale = 900.0 / floor(10.*ir->x() + .5);  // round-off to 0.1 dpi
            yscale = 900.0 / floor(10.*ir->y() + .5);
        } else {
            xscale = 90.0 / defaultxdpi;
            yscale = 90.0 / defaultxdpi;
        }

        width *= xscale;
        height *= yscale;

        delete ir; // deleting NULL is safe

        // Create image node
        Inkscape::XML::Document *xml_doc = doc->getReprDoc();
        Inkscape::XML::Node *image_node = xml_doc->createElement("svg:image");
        sp_repr_set_svg_double(image_node, "width", width);
        sp_repr_set_svg_double(image_node, "height", height);

        // Added 11 Feb 2014 as we now honor "preserveAspectRatio" and this is
        // what Inkscaper's expect.
        image_node->setAttribute("preserveAspectRatio", "none");

        if( scale.compare( "auto" ) != 0 ) {
            SPCSSAttr *css = sp_repr_css_attr_new();
            sp_repr_css_set_property(css, "image-rendering", scale.c_str());
            sp_repr_css_set(image_node, css, "style");
            sp_repr_css_attr_unref( css );
        }

        if (embed) {
            sp_embed_image(image_node, pb.get());
        } else {
            // convert filename to uri
            gchar* _uri = g_filename_to_uri(uri, NULL, NULL);
            if(_uri) {
                image_node->setAttribute("xlink:href", _uri);
//.........这里部分代码省略.........

/**
 * This function will create a new tspan element with the same attributes as
 * the tref had and add the same text as a child.  The tref is replaced in the
 * tree with the new tspan.
 * The code is based partially on sp_use_unlink
 */
SPObject *
sp_tref_convert_to_tspan(SPObject *obj)
{
    SPObject * new_tspan = NULL;

    ////////////////////
    // BASE CASE
    ////////////////////
    if (SP_IS_TREF(obj)) {

        SPTRef *tref = SP_TREF(obj);

        if (tref && tref->stringChild) {
            Inkscape::XML::Node *tref_repr = tref->getRepr();
            Inkscape::XML::Node *tref_parent = tref_repr->parent();

            SPDocument *document = tref->document;
            Inkscape::XML::Document *xml_doc = document->getReprDoc();

            Inkscape::XML::Node *new_tspan_repr = xml_doc->createElement("svg:tspan");

            // Add the new tspan element just after the current tref
            tref_parent->addChild(new_tspan_repr, tref_repr);
            Inkscape::GC::release(new_tspan_repr);

            new_tspan = document->getObjectByRepr(new_tspan_repr);

            // Create a new string child for the tspan
            Inkscape::XML::Node *new_string_repr = tref->stringChild->getRepr()->duplicate(xml_doc);
            new_tspan_repr->addChild(new_string_repr, NULL);

            //SPObject * new_string_child = document->getObjectByRepr(new_string_repr);

            // Merge style from the tref
            SPStyle *new_tspan_sty = new_tspan->style;
            SPStyle const *tref_sty = tref->style;
            sp_style_merge_from_dying_parent(new_tspan_sty, tref_sty);
            sp_style_merge_from_parent(new_tspan_sty, new_tspan->parent->style);


            new_tspan->updateRepr();

            // Hold onto our SPObject and repr for now.
            sp_object_ref(tref, NULL);
            Inkscape::GC::anchor(tref_repr);

            // Remove ourselves, not propagating delete events to avoid a
            // chain-reaction with other elements that might reference us.
            tref->deleteObject(false);

            // Give the copy our old id and let go of our old repr.
            new_tspan_repr->setAttribute("id", tref_repr->attribute("id"));
            Inkscape::GC::release(tref_repr);

            // Establish the succession and let go of our object.
            tref->setSuccessor(new_tspan);
            sp_object_unref(tref, NULL);
        }
    }
    ////////////////////
    // RECURSIVE CASE
    ////////////////////
    else {
        GSList *l = NULL;
        for (SPObject *child = obj->firstChild() ; child != NULL ; child = child->getNext() ) {
            sp_object_ref(child, obj);
            l = g_slist_prepend (l, child);
        }
        l = g_slist_reverse (l);
        while (l) {
            SPObject *child = reinterpret_cast<SPObject *>(l->data); // We just built this list, so cast is safe.
            l = g_slist_remove (l, child);

            // Note that there may be more than one conversion happening here, so if it's not a
            // tref being passed into this function, the returned value can't be specifically known
            new_tspan = sp_tref_convert_to_tspan(child);

            sp_object_unref(child, obj);
        }
    }

    return new_tspan;
}

SPItem *SPUse::unlink() {
    Inkscape::XML::Node *repr = this->getRepr();

    if (!repr) {
        return NULL;
    }

    Inkscape::XML::Node *parent = repr->parent();
    SPDocument *document = this->document;
    Inkscape::XML::Document *xml_doc = document->getReprDoc();

    // Track the ultimate source of a chain of uses.
    SPItem *orig = this->root();

    if (!orig) {
        return NULL;
    }

    // Calculate the accumulated transform, starting from the original.
    Geom::Affine t = this->get_root_transform();

    Inkscape::XML::Node *copy = NULL;

    if (dynamic_cast<SPSymbol *>(orig)) { // make a group, copy children
        copy = xml_doc->createElement("svg:g");

        for (Inkscape::XML::Node *child = orig->getRepr()->firstChild() ; child != NULL; child = child->next()) {
                Inkscape::XML::Node *newchild = child->duplicate(xml_doc);
                copy->appendChild(newchild);
        }
    } else { // just copy
        copy = orig->getRepr()->duplicate(xml_doc);
    }

    // Add the duplicate repr just after the existing one.
    parent->addChild(copy, repr);

    // Retrieve the SPItem of the resulting repr.
    SPObject *unlinked = document->getObjectByRepr(copy);

    // Merge style from the use.
    unlinked->style->merge( this->style );
    unlinked->style->cascade( unlinked->parent->style );
    unlinked->updateRepr();

    // Hold onto our SPObject and repr for now.
    sp_object_ref(this, NULL);
    Inkscape::GC::anchor(repr);

    // Remove ourselves, not propagating delete events to avoid a
    // chain-reaction with other elements that might reference us.
    this->deleteObject(false);

    // Give the copy our old id and let go of our old repr.
    copy->setAttribute("id", repr->attribute("id"));
    Inkscape::GC::release(repr);

    // Remove tiled clone attrs.
    copy->setAttribute("inkscape:tiled-clone-of", NULL);
    copy->setAttribute("inkscape:tile-w", NULL);
    copy->setAttribute("inkscape:tile-h", NULL);
    copy->setAttribute("inkscape:tile-cx", NULL);
    copy->setAttribute("inkscape:tile-cy", NULL);

    // Establish the succession and let go of our object.
    this->setSuccessor(unlinked);
    sp_object_unref(this, NULL);

    SPItem *item = dynamic_cast<SPItem *>(unlinked);
    g_assert(item != NULL);

    // Set the accummulated transform.
    {
        Geom::Affine nomove(Geom::identity());
        // Advertise ourselves as not moving.
        item->doWriteTransform(item->getRepr(), t, &nomove);
    }

    return item;
}

static void spdc_flush_white(FreehandBase *dc, SPCurve *gc)
{
    SPCurve *c;
    if (dc->white_curves) {
        g_assert(dc->white_item);
        c = SPCurve::concat(dc->white_curves);
        g_slist_free(dc->white_curves);
        dc->white_curves = NULL;
        if (gc) {
            c->append(gc, FALSE);
        }
    } else if (gc) {
        c = gc;
        c->ref();
    } else {
        return;
    }

    // Now we have to go back to item coordinates at last
    c->transform( dc->white_item
                            ? (dc->white_item)->dt2i_affine()
                            : dc->desktop->dt2doc() );

    SPDesktop *desktop = dc->desktop;
    SPDocument *doc = desktop->getDocument();
    Inkscape::XML::Document *xml_doc = doc->getReprDoc();

    if ( c && !c->is_empty() ) {
        // We actually have something to write

        bool has_lpe = false;
        Inkscape::XML::Node *repr;

        if (dc->white_item) {
            repr = dc->white_item->getRepr();
            has_lpe = SP_LPE_ITEM(dc->white_item)->hasPathEffectRecursive();
        } else {
            repr = xml_doc->createElement("svg:path");
            // Set style
            sp_desktop_apply_style_tool(desktop, repr, tool_name(dc).data(), false);
        }

        gchar *str = sp_svg_write_path( c->get_pathvector() );
        g_assert( str != NULL );
        if (has_lpe)
            repr->setAttribute("inkscape:original-d", str);
        else
            repr->setAttribute("d", str);
        g_free(str);

        if (!dc->white_item) {
            // Attach repr
            SPItem *item = SP_ITEM(desktop->currentLayer()->appendChildRepr(repr));

            spdc_check_for_and_apply_waiting_LPE(dc, item, c);
            if(previous_shape_type != BEND_CLIPBOARD){
                dc->selection->set(repr);
            }
            Inkscape::GC::release(repr);
            item->transform = SP_ITEM(desktop->currentLayer())->i2doc_affine().inverse();
            item->updateRepr();
            item->doWriteTransform(item->getRepr(), item->transform, NULL, true);
            if(previous_shape_type == BEND_CLIPBOARD){
                repr->parent()->removeChild(repr);
            }
        }

        DocumentUndo::done(doc, SP_IS_PEN_CONTEXT(dc)? SP_VERB_CONTEXT_PEN : SP_VERB_CONTEXT_PENCIL,
                         _("Draw path"));

        // When quickly drawing several subpaths with Shift, the next subpath may be finished and
        // flushed before the selection_modified signal is fired by the previous change, which
        // results in the tool losing all of the selected path's curve except that last subpath. To
        // fix this, we force the selection_modified callback now, to make sure the tool's curve is
        // in sync immediately.
        spdc_selection_modified(desktop->getSelection(), 0, dc);
    }

    c->unref();

    // Flush pending updates
    doc->ensureUpToDate();
}

static bool sp_spray_recursive(SPDesktop *desktop,
                               Inkscape::Selection *selection,
                               SPItem *item,
                               Geom::Point p,
                               Geom::Point /*vector*/,
                               gint mode,
                               double radius,
                               double /*force*/,
                               double population,
                               double &scale,
                               double scale_variation,
                               bool /*reverse*/,
                               double mean,
                               double standard_deviation,
                               double ratio,
                               double tilt,
                               double rotation_variation,
                               gint _distrib)
{
    bool did = false;
    
    if (SP_IS_BOX3D(item) ) {
        // convert 3D boxes to ordinary groups before spraying their shapes
        item = box3d_convert_to_group(SP_BOX3D(item));
        selection->add(item);
    }

    double _fid = g_random_double_range(0, 1);
    double angle = g_random_double_range( - rotation_variation / 100.0 * M_PI , rotation_variation / 100.0 * M_PI );
    double _scale = g_random_double_range( 1.0 - scale_variation / 100.0, 1.0 + scale_variation / 100.0 );
    double dr; double dp;
    random_position( dr, dp, mean, standard_deviation, _distrib );
    dr=dr*radius;

    if (mode == SPRAY_MODE_COPY) {
        Geom::OptRect a = item->documentVisualBounds();
        if (a) {
            SPItem *item_copied;
            if(_fid <= population)
            {
                // duplicate
                SPDocument *doc = item->document;
                Inkscape::XML::Document* xml_doc = doc->getReprDoc();
                Inkscape::XML::Node *old_repr = item->getRepr();
                Inkscape::XML::Node *parent = old_repr->parent();
                Inkscape::XML::Node *copy = old_repr->duplicate(xml_doc);
                parent->appendChild(copy);

                SPObject *new_obj = doc->getObjectByRepr(copy);
                item_copied = (SPItem *) new_obj;   //convertion object->item
                Geom::Point center=item->getCenter();
                sp_spray_scale_rel(center,desktop, item_copied, Geom::Scale(_scale,_scale));
                sp_spray_scale_rel(center,desktop, item_copied, Geom::Scale(scale,scale));

                sp_spray_rotate_rel(center,desktop,item_copied, Geom::Rotate(angle));
                //Move the cursor p
                Geom::Point move = (Geom::Point(cos(tilt)*cos(dp)*dr/(1-ratio)+sin(tilt)*sin(dp)*dr/(1+ratio), -sin(tilt)*cos(dp)*dr/(1-ratio)+cos(tilt)*sin(dp)*dr/(1+ratio)))+(p-a->midpoint());
                sp_item_move_rel(item_copied, Geom::Translate(move[Geom::X], -move[Geom::Y]));
                did = true;
            }
        }
    } else if (mode == SPRAY_MODE_SINGLE_PATH) {

        SPItem *father = NULL;         //initial Object
        SPItem *item_copied = NULL;    //Projected Object
        SPItem *unionResult = NULL;    //previous union
        SPItem *son = NULL;            //father copy

        int i=1;
        for (GSList *items = g_slist_copy((GSList *) selection->itemList());
                items != NULL;
                items = items->next) {

            SPItem *item1 = (SPItem *) items->data;
            if (i == 1) {
                father = item1;
            }
            if (i == 2) {
                unionResult = item1;
            }
            i++;
        }
        SPDocument *doc = father->document;
        Inkscape::XML::Document* xml_doc = doc->getReprDoc();
        Inkscape::XML::Node *old_repr = father->getRepr();
        Inkscape::XML::Node *parent = old_repr->parent();

        Geom::OptRect a = father->documentVisualBounds();
        if (a) {
            if (i == 2) {
                Inkscape::XML::Node *copy1 = old_repr->duplicate(xml_doc);
                parent->appendChild(copy1);
                SPObject *new_obj1 = doc->getObjectByRepr(copy1);
                son = (SPItem *) new_obj1;   // conversion object->item
                unionResult = son;
                Inkscape::GC::release(copy1);
            }

            if (_fid <= population) { // Rules the population of objects sprayed
                // duplicates the father
//.........这里部分代码省略.........