C++ (Cpp) sp_canvas_force_full_redraw_after_interruptions примеры использования

Пример #1

void Inkscape::Rubberband::start(SPDesktop *d, Geom::Point const &p)
{
    _points.clear();
    _touchpath_curve->reset();
    delete_canvas_items();
    _desktop = d;
    _start = p;
    _started = true;
    _points.push_back(_desktop->d2w(p));
    _touchpath_curve->moveto(p);

    sp_canvas_force_full_redraw_after_interruptions(_desktop->canvas, 5);
}

Пример #2

static void
sp_spiral_drag(SPSpiralContext *sc, Geom::Point p, guint state)
{
    SPDesktop *desktop = SP_EVENT_CONTEXT(sc)->desktop;

    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
    int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);

    if (!sc->item) {

        if (Inkscape::have_viable_layer(desktop, sc->_message_context) == false) {
            return;
        }

        /* Create object */
        Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_EVENT_CONTEXT_DOCUMENT(sc));
        Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
        repr->setAttribute("sodipodi:type", "spiral");

        /* Set style */
        sp_desktop_apply_style_tool(desktop, repr, "/tools/shapes/spiral", false);

        sc->item = (SPItem *) desktop->currentLayer()->appendChildRepr(repr);
        Inkscape::GC::release(repr);
        sc->item->transform = sp_item_i2doc_affine(SP_ITEM(desktop->currentLayer())).inverse();
        sc->item->updateRepr();

        sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5);
    }

    SnapManager &m = desktop->namedview->snap_manager;
    m.setup(desktop, true, sc->item);
    Geom::Point pt2g = to_2geom(p);
    m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, pt2g);

    Geom::Point const p0 = to_2geom(sp_desktop_dt2doc_xy_point(desktop, sc->center));
    Geom::Point const p1 = to_2geom(sp_desktop_dt2doc_xy_point(desktop, from_2geom(pt2g)));        
    
    SPSpiral *spiral = SP_SPIRAL(sc->item);

    Geom::Point const delta = p1 - p0;
    gdouble const rad = Geom::L2(delta);

    gdouble arg = Geom::atan2(delta) - 2.0*M_PI*spiral->revo;

    if (state & GDK_CONTROL_MASK) {
        arg = sp_round(arg, M_PI/snaps);
    }

    /* Fixme: these parameters should be got from dialog box */
    sp_spiral_position_set(spiral, p0[Geom::X], p0[Geom::Y],
                           /*expansion*/ sc->exp,
                           /*revolution*/ sc->revo,
                           rad, arg,
                           /*t0*/ sc->t0);

    /* status text */
    GString *rads = SP_PX_TO_METRIC_STRING(rad, desktop->namedview->getDefaultMetric());
    sc->_message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
                               _("<b>Spiral</b>: radius %s, angle %5g&#176;; with <b>Ctrl</b> to snap angle"),
                               rads->str, sp_round((arg + 2.0*M_PI*spiral->revo)*180/M_PI, 0.0001));
    g_string_free(rads, FALSE);
}