Ejemplo n.º 1
0
/**
 * A function called when the window gets focus.
 *
 * This function gets called on a focus event.  It figures out how much
 * time is required for a transition, and the number of steps that'll take,
 * and sets up the _trans_timer function to do the work.  If the transition
 * time is set to 0 ms it just calls _trans_timer once with _steps equal to
 * zero so that the transition happens instantaneously.  This occurs on
 * windows as opacity changes cause flicker there.
 */
void FloatingBehavior::_focus_event (void)
{
    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
    _steps = 0;
    _trans_focus = prefs->getDoubleLimited("/dialogs/transparency/on-focus", 0.95, 0.0, 1.0);
    _trans_blur = prefs->getDoubleLimited("/dialogs/transparency/on-blur", 0.50, 0.0, 1.0);
    _trans_time = prefs->getIntLimited("/dialogs/transparency/animate-time", 100, 0, 5000);

    if (_trans_time != 0) {
        float diff = _trans_focus - _trans_blur;
        if (diff < 0.0) diff *= -1.0;

        while (diff > 0.05) {
            _steps++;
            diff = diff / 2.0;
        }

        if (_steps != 0) {
            Glib::signal_timeout().connect(sigc::mem_fun(this, &FloatingBehavior::_trans_timer), _trans_time / _steps);
        }
    }
    _trans_timer();

    return;
}
Ejemplo n.º 2
0
static void
interpolate(SPPencilContext *pc)
{

    g_assert( pc->ps.size() > 1 );

    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
    double const tol = prefs->getDoubleLimited("/tools/freehand/pencil/tolerance", 10.0, 1.0, 100.0) * 0.4;
    double const tolerance_sq = 0.02 * square( pc->desktop->w2d().descrim() * 
                                               tol) * exp(0.2*tol - 2);

    g_assert(is_zero(pc->req_tangent)
             || is_unit_vector(pc->req_tangent));
    Geom::Point const tHatEnd(0, 0);

    guint n_points  = pc->ps.size();
    pc->green_curve->reset();
    pc->red_curve->reset();
    pc->red_curve_is_valid = false;

    Geom::Point * b = g_new(Geom::Point, 4*n_points);
    Geom::Point * points = g_new(Geom::Point, 4*n_points);
    for (unsigned int i = 0; i < pc->ps.size(); i++) { 
        points[i] = pc->ps[i];
    }

    // worst case gives us a segment per point
    int max_segs = 4*n_points;

    int const n_segs = Geom::bezier_fit_cubic_r(b, points, n_points,
                                             tolerance_sq, max_segs);

    if ( n_segs > 0)
    {
        /* Fit and draw and reset state */
        pc->green_curve->moveto(b[0]);
        for (int c = 0; c < n_segs; c++) { 
            pc->green_curve->curveto(b[4*c+1], b[4*c+2], b[4*c+3]);
        }
        sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), pc->green_curve);

        /* Fit and draw and copy last point */
        g_assert(!pc->green_curve->is_empty());

        /* Set up direction of next curve. */
        {
            Geom::CubicBezier const * last_seg = dynamic_cast<Geom::CubicBezier const *>(pc->green_curve->last_segment());
            g_assert( last_seg );      // Relevance: validity of (*last_seg)[2]
            pc->p[0] = last_seg->finalPoint();
            pc->npoints = 1;
            Geom::Point const req_vec( pc->p[0] - (*last_seg)[2] );
            pc->req_tangent = ( ( Geom::is_zero(req_vec) || !in_svg_plane(req_vec) )
                                ? Geom::Point(0, 0)
                                : Geom::unit_vector(req_vec) );
        }
    }
    g_free(b);
    g_free(points);
    pc->ps.clear();
}
Ejemplo n.º 3
0
static void sp_pencil_tb_tolerance_value_changed(GtkAdjustment *adj, GObject *tbl)
{
    // quit if run by the attr_changed listener
    if (g_object_get_data( tbl, "freeze" )) {
        return;
    }
    // in turn, prevent listener from responding
    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
    g_object_set_data( tbl, "freeze", GINT_TO_POINTER(TRUE) );
    prefs->setDouble("/tools/freehand/pencil/tolerance",
            gtk_adjustment_get_value(adj));
    g_object_set_data( tbl, "freeze", GINT_TO_POINTER(FALSE) );
    SPDesktop *desktop = static_cast<SPDesktop *>(g_object_get_data(tbl, "desktop"));
    std::vector<SPItem *> selected = desktop->getSelection()->itemList();
    for (std::vector<SPItem *>::iterator it(selected.begin()); it != selected.end(); ++it){
        SPLPEItem* lpeitem = dynamic_cast<SPLPEItem*>(*it);
        if (lpeitem && lpeitem->hasPathEffect()){
            Inkscape::LivePathEffect::Effect* simplify = lpeitem->getPathEffectOfType(Inkscape::LivePathEffect::SIMPLIFY);
            if(simplify){
                Inkscape::LivePathEffect::LPESimplify *lpe_simplify = dynamic_cast<Inkscape::LivePathEffect::LPESimplify*>(simplify->getLPEObj()->get_lpe());
                if (lpe_simplify) {
                    double tol = prefs->getDoubleLimited("/tools/freehand/pencil/tolerance", 10.0, 1.0, 100.0);
                    tol = tol/(100.0*(102.0-tol));
                    std::ostringstream ss;
                    ss << tol;
                    Inkscape::LivePathEffect::Effect* powerstroke = lpeitem->getPathEffectOfType(Inkscape::LivePathEffect::POWERSTROKE);
                    bool simplified = false;
                    if(powerstroke){
                        Inkscape::LivePathEffect::LPEPowerStroke *lpe_powerstroke = dynamic_cast<Inkscape::LivePathEffect::LPEPowerStroke*>(powerstroke->getLPEObj()->get_lpe());
                        if(lpe_powerstroke){
                            lpe_powerstroke->getRepr()->setAttribute("is_visible", "false");
                            sp_lpe_item_update_patheffect(lpeitem, false, false);
                            SPShape *sp_shape = dynamic_cast<SPShape *>(lpeitem);
                            if (sp_shape) {
                                guint previous_curve_length = sp_shape->getCurve()->get_segment_count();
                                lpe_simplify->getRepr()->setAttribute("threshold", ss.str());
                                sp_lpe_item_update_patheffect(lpeitem, false, false);
                                simplified = true;
                                guint curve_length = sp_shape->getCurve()->get_segment_count();
                                std::vector<Geom::Point> ts = lpe_powerstroke->offset_points.data();
                                double factor = (double)curve_length/ (double)previous_curve_length;
                                for (size_t i = 0; i < ts.size(); i++) {
                                    ts[i][Geom::X] = ts[i][Geom::X] * factor;
                                }
                                lpe_powerstroke->offset_points.param_setValue(ts);
                            }
                            lpe_powerstroke->getRepr()->setAttribute("is_visible", "true");
                            sp_lpe_item_update_patheffect(lpeitem, false, false);
                        }
                    }
                    if(!simplified){
                        lpe_simplify->getRepr()->setAttribute("threshold", ss.str());
                    }
                }
            }
        }
    }
}
Ejemplo n.º 4
0
bool ZoomTool::root_handler(GdkEvent* event) {
    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
	
    tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
    double const zoom_inc = prefs->getDoubleLimited("/options/zoomincrement/value", M_SQRT2, 1.01, 10);

    bool ret = false;

    switch (event->type) {
        case GDK_BUTTON_PRESS:
        {
            Geom::Point const button_w(event->button.x, event->button.y);
            Geom::Point const button_dt(desktop->w2d(button_w));

            if (event->button.button == 1 && !this->space_panning) {
                // save drag origin
                xp = (gint) event->button.x;
                yp = (gint) event->button.y;
                within_tolerance = true;

                Inkscape::Rubberband::get(desktop)->start(desktop, button_dt);

                escaped = false;

                ret = true;
            } else if (event->button.button == 3) {
                double const zoom_rel( (event->button.state & GDK_SHIFT_MASK)
                                       ? zoom_inc
                                       : 1 / zoom_inc );

                desktop->zoom_relative_keep_point(button_dt, zoom_rel);
                ret = true;
            }
			
			sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
								GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK,
								NULL, event->button.time);

			this->grabbed = SP_CANVAS_ITEM(desktop->acetate);
            break;
        }

	case GDK_MOTION_NOTIFY:
            if ((event->motion.state & GDK_BUTTON1_MASK) && !this->space_panning) {
                ret = true;

                if ( within_tolerance
                     && ( abs( (gint) event->motion.x - xp ) < tolerance )
                     && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
                    break; // do not drag if we're within tolerance from origin
                }
                // Once the user has moved farther than tolerance from the original location
                // (indicating they intend to move the object, not click), then always process the
                // motion notify coordinates as given (no snapping back to origin)
                within_tolerance = false;

                Geom::Point const motion_w(event->motion.x, event->motion.y);
                Geom::Point const motion_dt(desktop->w2d(motion_w));
                Inkscape::Rubberband::get(desktop)->move(motion_dt);
                gobble_motion_events(GDK_BUTTON1_MASK);
            }
            break;

      	case GDK_BUTTON_RELEASE:
        {
            Geom::Point const button_w(event->button.x, event->button.y);
            Geom::Point const button_dt(desktop->w2d(button_w));

            if ( event->button.button == 1  && !this->space_panning) {
                Geom::OptRect const b = Inkscape::Rubberband::get(desktop)->getRectangle();

                if (b && !within_tolerance) {
                    desktop->set_display_area(*b, 10);
                } else if (!escaped) {
                    double const zoom_rel( (event->button.state & GDK_SHIFT_MASK)
                                           ? 1 / zoom_inc
                                           : zoom_inc );

                    desktop->zoom_relative_keep_point(button_dt, zoom_rel);
                }

                ret = true;
            }

            Inkscape::Rubberband::get(desktop)->stop();
			
			if (this->grabbed) {
				sp_canvas_item_ungrab(this->grabbed, event->button.time);
				this->grabbed = NULL;
			}
			
            xp = yp = 0;
            escaped = false;
            break;
        }
        case GDK_KEY_PRESS:
            switch (get_group0_keyval (&event->key)) {
                case GDK_KEY_Escape:
                    if (!Inkscape::Rubberband::get(desktop)->is_started()) {
                        Inkscape::SelectionHelper::selectNone(desktop);
                    }

                    Inkscape::Rubberband::get(desktop)->stop();
                    xp = yp = 0;
                    escaped = true;
                    ret = true;
                    break;

                case GDK_KEY_Up:
                case GDK_KEY_Down:
                case GDK_KEY_KP_Up:
                case GDK_KEY_KP_Down:
                    // prevent the zoom field from activation
                    if (!MOD__CTRL_ONLY(event))
                        ret = true;
                    break;

                case GDK_KEY_Shift_L:
                case GDK_KEY_Shift_R:
                    this->cursor_shape = cursor_zoom_out_xpm;
                    this->sp_event_context_update_cursor();
                    break;

                case GDK_KEY_Delete:
                case GDK_KEY_KP_Delete:
                case GDK_KEY_BackSpace:
                    ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
                    break;

                default:
			break;
		}
		break;
	case GDK_KEY_RELEASE:
            switch (get_group0_keyval (&event->key)) {
            	case GDK_KEY_Shift_L:
            	case GDK_KEY_Shift_R:
                    this->cursor_shape = cursor_zoom_xpm;
                    this->sp_event_context_update_cursor();
                    break;
            	default:
                    break;
            }
            break;
	default:
            break;
    }

    if (!ret) {
    	ret = ToolBase::root_handler(event);
    }

    return ret;
}
Ejemplo n.º 5
0
static gint
sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event)
{
    SPItem *item = NULL;
    SPItem *item_at_point = NULL, *group_at_point = NULL, *item_in_group = NULL;
    gint ret = FALSE;

    SPDesktop *desktop = event_context->desktop;
    SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);
    Inkscape::SelTrans *seltrans = sc->_seltrans;
    Inkscape::Selection *selection = sp_desktop_selection(desktop);
    Inkscape::Preferences *prefs = Inkscape::Preferences::get();

    // make sure we still have valid objects to move around
    if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {
        sp_select_context_abort(event_context);
    }

    switch (event->type) {
        case GDK_2BUTTON_PRESS:
            if (event->button.button == 1) {
                if (!selection->isEmpty()) {
                    SPItem *clicked_item = (SPItem *) selection->itemList()->data;
                    if (SP_IS_GROUP(clicked_item) && !SP_IS_BOX3D(clicked_item)) { // enter group if it's not a 3D box
                        desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
                        sp_desktop_selection(desktop)->clear();
                        sc->dragging = false;
                        sp_event_context_discard_delayed_snap_event(event_context);

                        desktop->canvas->end_forced_full_redraws();
                    } else { // switch tool
                        Geom::Point const button_pt(event->button.x, event->button.y);
                        Geom::Point const p(desktop->w2d(button_pt));
                        tools_switch_by_item (desktop, clicked_item, p);
                    }
                } else {
                    sp_select_context_up_one_layer(desktop);
                }
                ret = TRUE;
            }
            break;
        case GDK_BUTTON_PRESS:
            if (event->button.button == 1 && !event_context->space_panning) {

                // save drag origin
                xp = (gint) event->button.x;
                yp = (gint) event->button.y;
                within_tolerance = true;

                Geom::Point const button_pt(event->button.x, event->button.y);
                Geom::Point const p(desktop->w2d(button_pt));
                if (event->button.state & GDK_MOD1_MASK)
                    Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
                Inkscape::Rubberband::get(desktop)->start(desktop, p);
                if (sc->grabbed) {
                    sp_canvas_item_ungrab(sc->grabbed, event->button.time);
                    sc->grabbed = NULL;
                }
                sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
                                    GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK,
                                    NULL, event->button.time);
                sc->grabbed = SP_CANVAS_ITEM(desktop->acetate);

                // remember what modifiers were on before button press
                sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
                sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
                sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;

                sc->moved = FALSE;

                rb_escaped = drag_escaped = 0;

                ret = TRUE;
            } else if (event->button.button == 3) {
                // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
                sp_select_context_abort(event_context);
            }
            break;

        case GDK_MOTION_NOTIFY:
        	tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
        	if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
                Geom::Point const motion_pt(event->motion.x, event->motion.y);
                Geom::Point const p(desktop->w2d(motion_pt));

                if ( within_tolerance
                     && ( abs( (gint) event->motion.x - xp ) < tolerance )
                     && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
                    break; // do not drag if we're within tolerance from origin
                }
                // Once the user has moved farther than tolerance from the original location
                // (indicating they intend to move the object, not click), then always process the
                // motion notify coordinates as given (no snapping back to origin)
                within_tolerance = false;

                if (sc->button_press_ctrl || (sc->button_press_alt && !sc->button_press_shift && !selection->isEmpty())) {
                    // if it's not click and ctrl or alt was pressed (the latter with some selection
                    // but not with shift) we want to drag rather than rubberband
                  	sc->dragging = TRUE;
                    desktop->setCursor(SP_SELECT_D_CURSOR);
                    
                    desktop->canvas->force_full_redraw_after_interruptions(5);
                }

                if (sc->dragging) {
                    /* User has dragged fast, so we get events on root (lauris)*/
                    // not only that; we will end up here when ctrl-dragging as well
                    // and also when we started within tolerance, but trespassed tolerance outside of item
                    Inkscape::Rubberband::get(desktop)->stop();
                    SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();
                    item_at_point = desktop->item_at_point(Geom::Point(event->button.x, event->button.y), FALSE);
                    if (!item_at_point) // if no item at this point, try at the click point (bug 1012200)
                        item_at_point = desktop->item_at_point(Geom::Point(xp, yp), FALSE);
                    if (item_at_point || sc->moved || sc->button_press_alt) {
                        // drag only if starting from an item, or if something is already grabbed, or if alt-dragging
                        if (!sc->moved) {
                            item_in_group = desktop->item_at_point(Geom::Point(event->button.x, event->button.y), TRUE);
                            group_at_point = desktop->group_at_point(Geom::Point(event->button.x, event->button.y));
                            if (SP_IS_LAYER(selection->single()))
                                group_at_point = SP_GROUP(selection->single());

                            // group-at-point is meant to be topmost item if it's a group,
                            // not topmost group of all items at point
                            if (group_at_point != item_in_group &&
                                !(group_at_point && item_at_point &&
                                  group_at_point->isAncestorOf(item_at_point)))
                                group_at_point = NULL;

                            // if neither a group nor an item (possibly in a group) at point are selected, set selection to the item at point
                            if ((!item_in_group || !selection->includes(item_in_group)) &&
                                (!group_at_point || !selection->includes(group_at_point))
                                && !sc->button_press_alt) {
                                // select what is under cursor
                                if (!seltrans->isEmpty()) {
                                    seltrans->resetState();
                                }
                                // when simply ctrl-dragging, we don't want to go into groups
                                if (item_at_point && !selection->includes(item_at_point))
                                    selection->set(item_at_point);
                            } // otherwise, do not change selection so that dragging selected-within-group items, as well as alt-dragging, is possible
                            seltrans->grab(p, -1, -1, FALSE, TRUE);
                            sc->moved = TRUE;
                        }
                        if (!seltrans->isEmpty())
                            seltrans->moveTo(p, event->button.state);
                        desktop->scroll_to_point(p);
                        gobble_motion_events(GDK_BUTTON1_MASK);
                        ret = TRUE;
                    } else {
                        sc->dragging = FALSE;
                        sp_event_context_discard_delayed_snap_event(event_context);
                        desktop->canvas->end_forced_full_redraws();
                    }
                } else {
                    if (Inkscape::Rubberband::get(desktop)->is_started()) {
                        Inkscape::Rubberband::get(desktop)->move(p);
                        if (Inkscape::Rubberband::get(desktop)->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
                            event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> objects to select them; release <b>Alt</b> to switch to rubberband selection"));
                        } else {
                            event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Drag around</b> objects to select them; press <b>Alt</b> to switch to touch selection"));
                        }
                        gobble_motion_events(GDK_BUTTON1_MASK);
                    }
                }
            }
            break;
        case GDK_BUTTON_RELEASE:
            xp = yp = 0;
            if ((event->button.button == 1) && (sc->grabbed) && !event_context->space_panning) {
                if (sc->dragging) {
                    if (sc->moved) {
                        // item has been moved
                        seltrans->ungrab();
                        sc->moved = FALSE;
                    } else if (sc->item && !drag_escaped) {
                        // item has not been moved -> simply a click, do selecting
                        if (!selection->isEmpty()) {
                            if (event->button.state & GDK_SHIFT_MASK) {
                                // with shift, toggle selection
                                seltrans->resetState();
                                selection->toggle(sc->item);
                            } else {
                                SPObject* single = selection->single();
                                // without shift, increase state (i.e. toggle scale/rotation handles)
                                if (selection->includes(sc->item)) {
                                    seltrans->increaseState();
                                } else if (SP_IS_LAYER(single) && single->isAncestorOf(sc->item)) {
                                    seltrans->increaseState();
                                } else {
                                    seltrans->resetState();
                                    selection->set(sc->item);
                                }
                            }
                        } else { // simple or shift click, no previous selection
                            seltrans->resetState();
                            selection->set(sc->item);
                        }
                    }
                    sc->dragging = FALSE;
                    desktop->setCursor(SP_SELECT_CURSOR);
                    sp_event_context_discard_delayed_snap_event(event_context);
                    desktop->canvas->end_forced_full_redraws();

                    if (sc->item) {
                        sp_object_unref( SP_OBJECT(sc->item), NULL);
                    }
                    sc->item = NULL;
                } else {
                    Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop);
                    if (r->is_started() && !within_tolerance) {
                        // this was a rubberband drag
                        GSList *items = NULL;
                        if (r->getMode() == RUBBERBAND_MODE_RECT) {
                            Geom::OptRect const b = r->getRectangle();
                            items = sp_document_items_in_box(sp_desktop_document(desktop), desktop->dkey, *b);
                        } else if (r->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
                            items = sp_document_items_at_points(sp_desktop_document(desktop), desktop->dkey, r->getPoints());
                        }

                        seltrans->resetState();
                        r->stop();
                        SP_EVENT_CONTEXT(sc)->defaultMessageContext()->clear();

                        if (event->button.state & GDK_SHIFT_MASK) {
                            // with shift, add to selection
                            selection->addList (items);
                        } else {
                            // without shift, simply select anew
                            selection->setList (items);
                        }
                        g_slist_free (items);
                    } else { // it was just a click, or a too small rubberband
                        r->stop();
                        if (sc->button_press_shift && !rb_escaped && !drag_escaped) {
                            // this was a shift+click or alt+shift+click, select what was clicked upon

                            sc->button_press_shift = false;

                            if (sc->button_press_ctrl) {
                                // go into groups, honoring Alt
                                item = sp_event_context_find_item (desktop,
                                                   Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, TRUE);
                                sc->button_press_ctrl = FALSE;
                            } else {
                                // don't go into groups, honoring Alt
                                item = sp_event_context_find_item (desktop,
                                                   Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
                            }

                            if (item) {
                                selection->toggle(item);
                                item = NULL;
                            }

                        } else if ((sc->button_press_ctrl || sc->button_press_alt) && !rb_escaped && !drag_escaped) { // ctrl+click, alt+click

                            item = sp_event_context_find_item (desktop,
                                         Geom::Point(event->button.x, event->button.y), sc->button_press_alt, sc->button_press_ctrl);

                            sc->button_press_ctrl = FALSE;
                            sc->button_press_alt = FALSE;

                            if (item) {
                                if (selection->includes(item)) {
                                    seltrans->increaseState();
                                } else {
                                    seltrans->resetState();
                                    selection->set(item);
                                }
                                item = NULL;
                            }

                        } else { // click without shift, simply deselect, unless with Alt or something was cancelled
                            if (!selection->isEmpty()) {
                                if (!(rb_escaped) && !(drag_escaped) && !(event->button.state & GDK_MOD1_MASK))
                                    selection->clear();
                                rb_escaped = 0;
                                ret = TRUE;
                            }
                        }
                    }
                    ret = TRUE;
                }
                if (sc->grabbed) {
                    sp_canvas_item_ungrab(sc->grabbed, event->button.time);
                    sc->grabbed = NULL;
                }

                desktop->updateNow();
            }
            if (event->button.button == 1) {
                Inkscape::Rubberband::get(desktop)->stop(); // might have been started in another tool!
            }
            sc->button_press_shift = false;
            sc->button_press_ctrl = false;
            sc->button_press_alt = false;
            break;

        case GDK_KEY_PRESS: // keybindings for select context

			{
			{
        	guint keyval = get_group0_keyval(&event->key);
            bool alt = ( MOD__ALT
                                    || (keyval == GDK_Alt_L)
                                    || (keyval == GDK_Alt_R)
                                    || (keyval == GDK_Meta_L)
                                    || (keyval == GDK_Meta_R));

            if (!key_is_a_modifier (keyval)) {
                    event_context->defaultMessageContext()->clear();
            } else if (sc->grabbed || seltrans->isGrabbed()) {
                if (Inkscape::Rubberband::get(desktop)->is_started()) {
                    // if Alt then change cursor to moving cursor:
                    if (alt) {
                        Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
                    }
                } else {
                // do not change the statusbar text when mousekey is down to move or transform the object,
                // because the statusbar text is already updated somewhere else.
                   break;
                }
            } else {
                    sp_event_show_modifier_tip (event_context->defaultMessageContext(), event,
                                                _("<b>Ctrl</b>: click to select in groups; drag to move hor/vert"),
                                                _("<b>Shift</b>: click to toggle select; drag for rubberband selection"),
                                                _("<b>Alt</b>: click to select under; drag to move selected or select by touch"));
                    // if Alt and nonempty selection, show moving cursor ("move selected"):
                    if (alt && !selection->isEmpty() && !desktop->isWaitingCursor()) {
                        desktop->setCursor(SP_SELECT_D_CURSOR);
                    }
                    //*/
                    break;
            }
			}

            gdouble const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px
			gdouble const offset = prefs->getDoubleLimited("/options/defaultscale/value", 2, 0, 1000);
			int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);

			switch (get_group0_keyval (&event->key)) {
                case GDK_Left: // move selection left
                case GDK_KP_Left:
                case GDK_KP_4:
                    if (!MOD__CTRL) { // not ctrl
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        if (MOD__ALT) { // alt
                            if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*-10, 0); // shift
                            else sp_selection_move_screen(desktop, mul*-1, 0); // no shift
                        }
                        else { // no alt
                            if (MOD__SHIFT) sp_selection_move(desktop, mul*-10*nudge, 0); // shift
                            else sp_selection_move(desktop, mul*-nudge, 0); // no shift
                        }
                        ret = TRUE;
                    }
                    break;
                case GDK_Up: // move selection up
                case GDK_KP_Up:
                case GDK_KP_8:
                    if (!MOD__CTRL) { // not ctrl
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        if (MOD__ALT) { // alt
                            if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*10); // shift
                            else sp_selection_move_screen(desktop, 0, mul*1); // no shift
                        }
                        else { // no alt
                            if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*10*nudge); // shift
                            else sp_selection_move(desktop, 0, mul*nudge); // no shift
                        }
                        ret = TRUE;
                    }
                    break;
                case GDK_Right: // move selection right
                case GDK_KP_Right:
                case GDK_KP_6:
                    if (!MOD__CTRL) { // not ctrl
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        if (MOD__ALT) { // alt
                            if (MOD__SHIFT) sp_selection_move_screen(desktop, mul*10, 0); // shift
                            else sp_selection_move_screen(desktop, mul*1, 0); // no shift
                        }
                        else { // no alt
                            if (MOD__SHIFT) sp_selection_move(desktop, mul*10*nudge, 0); // shift
                            else sp_selection_move(desktop, mul*nudge, 0); // no shift
                        }
                        ret = TRUE;
                    }
                    break;
                case GDK_Down: // move selection down
                case GDK_KP_Down:
                case GDK_KP_2:
                    if (!MOD__CTRL) { // not ctrl
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        if (MOD__ALT) { // alt
                            if (MOD__SHIFT) sp_selection_move_screen(desktop, 0, mul*-10); // shift
                            else sp_selection_move_screen(desktop, 0, mul*-1); // no shift
                        }
                        else { // no alt
                            if (MOD__SHIFT) sp_selection_move(desktop, 0, mul*-10*nudge); // shift
                            else sp_selection_move(desktop, 0, mul*-nudge); // no shift
                        }
                        ret = TRUE;
                    }
                    break;
                case GDK_Escape:
                    if (!sp_select_context_abort(event_context))
                        selection->clear();
                    ret = TRUE;
                    break;
                case GDK_a:
                case GDK_A:
                    if (MOD__CTRL_ONLY) {
                        sp_edit_select_all(desktop);
                        ret = TRUE;
                    }
                    break;
                case GDK_space:
                    /* stamping mode: show outline mode moving */
                    /* FIXME: Is next condition ok? (lauris) */
                    if (sc->dragging && sc->grabbed) {
                        seltrans->stamp();
                        ret = TRUE;
                    }
                    break;
                case GDK_x:
                case GDK_X:
                    if (MOD__ALT_ONLY) {
                        desktop->setToolboxFocusTo ("altx");
                        ret = TRUE;
                    }
                    break;
                case GDK_bracketleft:
                    if (MOD__ALT) {
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        sp_selection_rotate_screen(selection, mul*1);
                    } else if (MOD__CTRL) {
                        sp_selection_rotate(selection, 90);
                    } else if (snaps) {
                        sp_selection_rotate(selection, 180.0/snaps);
                    }
                    ret = TRUE;
                    break;
                case GDK_bracketright:
                    if (MOD__ALT) {
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        sp_selection_rotate_screen(selection, -1*mul);
                    } else if (MOD__CTRL) {
                        sp_selection_rotate(selection, -90);
                    } else if (snaps) {
                        sp_selection_rotate(selection, -180.0/snaps);
                    }
                    ret = TRUE;
                    break;
                case GDK_less:
                case GDK_comma:
                    if (MOD__ALT) {
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        sp_selection_scale_screen(selection, -2*mul);
                    } else if (MOD__CTRL) {
                        sp_selection_scale_times(selection, 0.5);
                    } else {
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        sp_selection_scale(selection, -offset*mul);
                    }
                    ret = TRUE;
                    break;
                case GDK_greater:
                case GDK_period:
                    if (MOD__ALT) {
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        sp_selection_scale_screen(selection, 2*mul);
                    } else if (MOD__CTRL) {
                        sp_selection_scale_times(selection, 2);
                    } else {
                        gint mul = 1 + gobble_key_events(
                            get_group0_keyval(&event->key), 0); // with any mask
                        sp_selection_scale(selection, offset*mul);
                    }
                    ret = TRUE;
                    break;
                case GDK_Return:
                    if (MOD__CTRL_ONLY) {
                        if (selection->singleItem()) {
                            SPItem *clicked_item = selection->singleItem();
                            if ( SP_IS_GROUP(clicked_item) ||
                                 SP_IS_BOX3D(clicked_item)) { // enter group or a 3D box
                                desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
                                sp_desktop_selection(desktop)->clear();
                            } else {
                                SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selected object is not a group. Cannot enter."));
                            }
                        }
                        ret = TRUE;
                    }
                    break;
                case GDK_BackSpace:
                    if (MOD__CTRL_ONLY) {
                        sp_select_context_up_one_layer(desktop);
                        ret = TRUE;
                    }
                    break;
                case GDK_s:
                case GDK_S:
                    if (MOD__SHIFT_ONLY) {
                        if (!selection->isEmpty()) {
                            seltrans->increaseState();
                        }
                        ret = TRUE;
                    }
                    break;
                case GDK_g:
                case GDK_G:
                    if (MOD__SHIFT_ONLY) {
                        sp_selection_to_guides(desktop);
                        ret = true;
                    }
                    break;
                default:
                    break;
            }
            break;
			}
        case GDK_KEY_RELEASE:
            {
            guint keyval = get_group0_keyval(&event->key);
            if (key_is_a_modifier (keyval))
                event_context->defaultMessageContext()->clear();

            bool alt = ( MOD__ALT
                         || (keyval == GDK_Alt_L)
                         || (keyval == GDK_Alt_R)
                         || (keyval == GDK_Meta_L)
                         || (keyval == GDK_Meta_R));

            if (Inkscape::Rubberband::get(desktop)->is_started()) {
                // if Alt then change cursor to moving cursor:
                if (alt) {
                    Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_RECT);
                }
            }
            }
            // set cursor to default.
            if (!desktop->isWaitingCursor()) {
                desktop->setCursor(event_context->cursor_shape);
            }
            break;
        default:
            break;
    }

    if (!ret) {
        if (((SPEventContextClass *) parent_class)->root_handler)
            ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
    }

    return ret;
}
static gint
sp_gradient_context_root_handler(SPEventContext *event_context, GdkEvent *event)
{
    static bool dragging;

    SPDesktop *desktop = event_context->desktop;
    Inkscape::Selection *selection = sp_desktop_selection (desktop);
    Inkscape::Preferences *prefs = Inkscape::Preferences::get();

    SPGradientContext *rc = SP_GRADIENT_CONTEXT(event_context);

    event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
    double const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000); // in px

    GrDrag *drag = event_context->_grdrag;
    g_assert (drag);

    gint ret = FALSE;
    switch (event->type) {
    case GDK_2BUTTON_PRESS:
        if ( event->button.button == 1 ) {
            bool over_line = false;
            SPCtrlLine *line = NULL;
            if (drag->lines) {
                for (GSList *l = drag->lines; (l != NULL) && (!over_line); l = l->next) {
                    line = (SPCtrlLine*) l->data;
                    over_line |= sp_gradient_context_is_over_line (rc, (SPItem*) line, Geom::Point(event->motion.x, event->motion.y));
                }
            }
            if (over_line) {
                // we take the first item in selection, because with doubleclick, the first click
                // always resets selection to the single object under cursor
                sp_gradient_context_add_stop_near_point(rc, SP_ITEM(selection->itemList()->data), rc->mousepoint_doc, event->button.time);
            } else {
                for (GSList const* i = selection->itemList(); i != NULL; i = i->next) {
                    SPItem *item = SP_ITEM(i->data);
                    SPGradientType new_type = (SPGradientType) prefs->getInt("/tools/gradient/newgradient", SP_GRADIENT_TYPE_LINEAR);
                    guint new_fill = prefs->getInt("/tools/gradient/newfillorstroke", 1);

                    SPGradient *vector = sp_gradient_vector_for_object(sp_desktop_document(desktop), desktop,                                                                                   SP_OBJECT (item), new_fill);

                    SPGradient *priv = sp_item_set_gradient(item, vector, new_type, new_fill);
                    sp_gradient_reset_to_userspace(priv, item);
                }

                sp_document_done (sp_desktop_document (desktop), SP_VERB_CONTEXT_GRADIENT,
                                  _("Create default gradient"));
            }
            ret = TRUE;
        }
        break;
    case GDK_BUTTON_PRESS:
        if ( event->button.button == 1 && !event_context->space_panning ) {
            Geom::Point button_w(event->button.x, event->button.y);

            // save drag origin
            event_context->xp = (gint) button_w[Geom::X];
            event_context->yp = (gint) button_w[Geom::Y];
            event_context->within_tolerance = true;

            dragging = true;

            Geom::Point button_dt = to_2geom(desktop->w2d(button_w));
            if (event->button.state & GDK_SHIFT_MASK) {
                Inkscape::Rubberband::get(desktop)->start(desktop, from_2geom(button_dt));
            } else {
                // remember clicked item, disregarding groups, honoring Alt; do nothing with Crtl to
                // enable Ctrl+doubleclick of exactly the selected item(s)
                if (!(event->button.state & GDK_CONTROL_MASK))
                    event_context->item_to_select = sp_event_context_find_item (desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE);

                /* Snap center to nearest magnetic point */
                SnapManager &m = desktop->namedview->snap_manager;
                m.setup(desktop);
                m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, button_dt);
                rc->origin = from_2geom(button_dt);
            }

            ret = TRUE;
        }
        break;
    case GDK_MOTION_NOTIFY:
        if ( dragging
             && ( event->motion.state & GDK_BUTTON1_MASK ) && !event_context->space_panning )
        {
            if ( event_context->within_tolerance
                 && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
                 && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
                break; // do not drag if we're within tolerance from origin
            }
            // Once the user has moved farther than tolerance from the original location
            // (indicating they intend to draw, not click), then always process the
            // motion notify coordinates as given (no snapping back to origin)
            event_context->within_tolerance = false;

            Geom::Point const motion_w(event->motion.x,
                                     event->motion.y);
            Geom::Point const motion_dt = event_context->desktop->w2d(motion_w);

            if (Inkscape::Rubberband::get(desktop)->is_started()) {
                Inkscape::Rubberband::get(desktop)->move(motion_dt);
                event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw around</b> handles to select them"));
            } else {
                sp_gradient_drag(*rc, motion_dt, event->motion.state, event->motion.time);
            }
            gobble_motion_events(GDK_BUTTON1_MASK);

            ret = TRUE;
        } else {
            bool over_line = false;
            if (drag->lines) {
                for (GSList *l = drag->lines; l != NULL; l = l->next) {
                    over_line |= sp_gradient_context_is_over_line (rc, (SPItem*) l->data, Geom::Point(event->motion.x, event->motion.y));
                }
            }

            if (rc->cursor_addnode && !over_line) {
                event_context->cursor_shape = cursor_gradient_xpm;
                sp_event_context_update_cursor(event_context);
                rc->cursor_addnode = false;
            } else if (!rc->cursor_addnode && over_line) {
                event_context->cursor_shape = cursor_gradient_add_xpm;
                sp_event_context_update_cursor(event_context);
                rc->cursor_addnode = true;
            }
        }
        break;
    case GDK_BUTTON_RELEASE:
        event_context->xp = event_context->yp = 0;
        if ( event->button.button == 1 && !event_context->space_panning ) {
            if ( (event->button.state & GDK_CONTROL_MASK) && (event->button.state & GDK_MOD1_MASK ) ) {
                bool over_line = false;
                SPCtrlLine *line = NULL;
                if (drag->lines) {
                    for (GSList *l = drag->lines; (l != NULL) && (!over_line); l = l->next) {
                        line = (SPCtrlLine*) l->data;
                        over_line = sp_gradient_context_is_over_line (rc, (SPItem*) line, Geom::Point(event->motion.x, event->motion.y));
                        if (over_line)
                            break;
                    }
                }
                if (over_line && line) {
                    sp_gradient_context_add_stop_near_point(rc, line->item, rc->mousepoint_doc, 0);
                    ret = TRUE;
                }
            } else {
                dragging = false;

                // unless clicked with Ctrl (to enable Ctrl+doubleclick).  
                if (event->button.state & GDK_CONTROL_MASK) {
                    ret = TRUE;
                    break;
                }

                if (!event_context->within_tolerance) {
                    // we've been dragging, either do nothing (grdrag handles that),
                    // or rubberband-select if we have rubberband
                    Inkscape::Rubberband::Rubberband *r = Inkscape::Rubberband::get(desktop);
                    if (r->is_started() && !event_context->within_tolerance) {
                        // this was a rubberband drag
                        if (r->getMode() == RUBBERBAND_MODE_RECT) {
                            Geom::OptRect const b = r->getRectangle();
                            drag->selectRect(*b);
                        }
                    }

                } else if (event_context->item_to_select) {
                    // no dragging, select clicked item if any
                    if (event->button.state & GDK_SHIFT_MASK) {
                        selection->toggle(event_context->item_to_select);
                    } else {
                        selection->set(event_context->item_to_select);
                    }
                } else {
                    // click in an empty space; do the same as Esc
                    if (drag->selected) {
                        drag->deselectAll();
                    } else {
                        selection->clear();
                    }
                }

                event_context->item_to_select = NULL;
                ret = TRUE;
            }
            Inkscape::Rubberband::get(desktop)->stop(); 
        }
        break;
    case GDK_KEY_PRESS:
        switch (get_group0_keyval (&event->key)) {
        case GDK_Alt_L:
        case GDK_Alt_R:
        case GDK_Control_L:
        case GDK_Control_R:
        case GDK_Shift_L:
        case GDK_Shift_R:
        case GDK_Meta_L:  // Meta is when you press Shift+Alt (at least on my machine)
        case GDK_Meta_R:
            sp_event_show_modifier_tip (event_context->defaultMessageContext(), event,
                                        _("<b>Ctrl</b>: snap gradient angle"),
                                        _("<b>Shift</b>: draw gradient around the starting point"),
                                        NULL);
            break;

        case GDK_x:
        case GDK_X:
            if (MOD__ALT_ONLY) {
                desktop->setToolboxFocusTo ("altx-grad");
                ret = TRUE;
            }
            break;

        case GDK_A:
        case GDK_a:
            if (MOD__CTRL_ONLY && drag->isNonEmpty()) {
                drag->selectAll();
                ret = TRUE;
            }
            break;

        case GDK_L:
        case GDK_l:
            if (MOD__CTRL_ONLY && drag->isNonEmpty() && drag->hasSelection()) {
                sp_gradient_simplify(rc, 1e-4);
                ret = TRUE;
            }
            break;

        case GDK_Escape:
            if (drag->selected) {
                drag->deselectAll();
            } else {
                selection->clear();
            }
            ret = TRUE;
            //TODO: make dragging escapable by Esc
            break;

        case GDK_Left: // move handle left
        case GDK_KP_Left:
        case GDK_KP_4:
            if (!MOD__CTRL) { // not ctrl
                gint mul = 1 + gobble_key_events(
                    get_group0_keyval(&event->key), 0); // with any mask
                if (MOD__ALT) { // alt
                    if (MOD__SHIFT) drag->selected_move_screen(mul*-10, 0); // shift
                    else drag->selected_move_screen(mul*-1, 0); // no shift
                }
                else { // no alt
                    if (MOD__SHIFT) drag->selected_move(mul*-10*nudge, 0); // shift
                    else drag->selected_move(mul*-nudge, 0); // no shift
                }
                ret = TRUE;
            }
            break;
        case GDK_Up: // move handle up
        case GDK_KP_Up:
        case GDK_KP_8:
            if (!MOD__CTRL) { // not ctrl
                gint mul = 1 + gobble_key_events(
                    get_group0_keyval(&event->key), 0); // with any mask
                if (MOD__ALT) { // alt
                    if (MOD__SHIFT) drag->selected_move_screen(0, mul*10); // shift
                    else drag->selected_move_screen(0, mul*1); // no shift
                }
                else { // no alt
                    if (MOD__SHIFT) drag->selected_move(0, mul*10*nudge); // shift
                    else drag->selected_move(0, mul*nudge); // no shift
                }
                ret = TRUE;
            }
            break;
        case GDK_Right: // move handle right
        case GDK_KP_Right:
        case GDK_KP_6:
            if (!MOD__CTRL) { // not ctrl
                gint mul = 1 + gobble_key_events(
                    get_group0_keyval(&event->key), 0); // with any mask
                if (MOD__ALT) { // alt
                    if (MOD__SHIFT) drag->selected_move_screen(mul*10, 0); // shift
                    else drag->selected_move_screen(mul*1, 0); // no shift
                }
                else { // no alt
                    if (MOD__SHIFT) drag->selected_move(mul*10*nudge, 0); // shift
                    else drag->selected_move(mul*nudge, 0); // no shift
                }
                ret = TRUE;
            }
            break;
        case GDK_Down: // move handle down
        case GDK_KP_Down:
        case GDK_KP_2:
            if (!MOD__CTRL) { // not ctrl
                gint mul = 1 + gobble_key_events(
                    get_group0_keyval(&event->key), 0); // with any mask
                if (MOD__ALT) { // alt
                    if (MOD__SHIFT) drag->selected_move_screen(0, mul*-10); // shift
                    else drag->selected_move_screen(0, mul*-1); // no shift
                }
                else { // no alt
                    if (MOD__SHIFT) drag->selected_move(0, mul*-10*nudge); // shift
                    else drag->selected_move(0, mul*-nudge); // no shift
                }
                ret = TRUE;
            }
            break;
        case GDK_r:
        case GDK_R:
            if (MOD__SHIFT_ONLY) {
                // First try selected dragger
                if (drag && drag->selected) {
                    drag->selected_reverse_vector();
                } else { // If no drag or no dragger selected, act on selection (both fill and stroke gradients)
                    for (GSList const* i = selection->itemList(); i != NULL; i = i->next) {
                        sp_item_gradient_reverse_vector (SP_ITEM(i->data), true);
                        sp_item_gradient_reverse_vector (SP_ITEM(i->data), false);
                    }
                }
                // we did an undoable action
                sp_document_done (sp_desktop_document (desktop), SP_VERB_CONTEXT_GRADIENT,
                                  _("Invert gradient"));
                ret = TRUE;
            }
            break;

        case GDK_Insert:
        case GDK_KP_Insert:
            // with any modifiers:
            sp_gradient_context_add_stops_between_selected_stops (rc);
            ret = TRUE;
            break;

        case GDK_Delete:
        case GDK_KP_Delete:
        case GDK_BackSpace:
            if ( drag->selected ) {
                drag->deleteSelected(MOD__CTRL_ONLY);
                ret = TRUE;
            }
            break;
        default:
            break;
        }
        break;
    case GDK_KEY_RELEASE:
        switch (get_group0_keyval (&event->key)) {
        case GDK_Alt_L:
        case GDK_Alt_R:
        case GDK_Control_L:
        case GDK_Control_R:
        case GDK_Shift_L:
        case GDK_Shift_R:
        case GDK_Meta_L:  // Meta is when you press Shift+Alt
        case GDK_Meta_R:
            event_context->defaultMessageContext()->clear();
            break;
        default:
            break;
        }
        break;
    default:
        break;
    }

    if (!ret) {
        if (((SPEventContextClass *) parent_class)->root_handler) {
            ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
        }
    }

    return ret;
}
Ejemplo n.º 7
0
static void spdc_check_for_and_apply_waiting_LPE(FreehandBase *dc, SPItem *item, SPCurve *curve)
{
    using namespace Inkscape::LivePathEffect;
    Inkscape::Preferences *prefs = Inkscape::Preferences::get();

    if (item && SP_IS_LPE_ITEM(item)) {
        bool simplify = prefs->getInt(tool_name(dc) + "/simplify", 0);
        if(simplify){
            double tol = prefs->getDoubleLimited("/tools/freehand/pencil/tolerance", 10.0, 1.0, 100.0);
            tol = tol/(100.0*(102.0-tol));
            std::ostringstream ss;
            ss << tol;
            spdc_apply_simplify(ss.str(), dc, item);
            sp_lpe_item_update_patheffect(SP_LPE_ITEM(item), false, false);
        }
        if (prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 1) {
            Effect::createAndApply(SPIRO, dc->desktop->doc(), item);
        }

        if (prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 2) {
            Effect::createAndApply(BSPLINE, dc->desktop->doc(), item);
        }
        SPShape *sp_shape = dynamic_cast<SPShape *>(item);
        if (sp_shape) {
            curve = sp_shape->getCurve();
        }

        //Store the clipboard path to apply in the future without the use of clipboard
        static Geom::PathVector previous_shape_pathv;

        shapeType shape = (shapeType)prefs->getInt(tool_name(dc) + "/shape", 0);
        bool shape_applied = false;
        SPCSSAttr *css_item = sp_css_attr_from_object(item, SP_STYLE_FLAG_ALWAYS);
        const char *cstroke = sp_repr_css_property(css_item, "stroke", "none");
        static SPItem *bend_item;

#define SHAPE_LENGTH 10
#define SHAPE_HEIGHT 10


        if(shape == LAST_APPLIED){

            shape = previous_shape_type;
            if(shape == CLIPBOARD || shape == BEND_CLIPBOARD){
                shape = LAST_APPLIED;
            }
        }

        switch (shape) {
            case NONE:
                // don't apply any shape
                break;
            case TRIANGLE_IN:
            {
                // "triangle in"
                std::vector<Geom::Point> points(1);
                points[0] = Geom::Point(0., SHAPE_HEIGHT/2);
                spdc_apply_powerstroke_shape(points, dc, item);

                shape_applied = true;
                break;
            }
            case TRIANGLE_OUT:
            {
                // "triangle out"
                guint curve_length = curve->get_segment_count();
                std::vector<Geom::Point> points(1);
                points[0] = Geom::Point((double)curve_length, SHAPE_HEIGHT/2);
                spdc_apply_powerstroke_shape(points, dc, item);

                shape_applied = true;
                break;
            }
            case ELLIPSE:
            {
                // "ellipse"
                SPCurve *c = new SPCurve();
                const double C1 = 0.552;
                c->moveto(0, SHAPE_HEIGHT/2);
                c->curveto(0, (1 - C1) * SHAPE_HEIGHT/2, (1 - C1) * SHAPE_LENGTH/2, 0, SHAPE_LENGTH/2, 0);
                c->curveto((1 + C1) * SHAPE_LENGTH/2, 0, SHAPE_LENGTH, (1 - C1) * SHAPE_HEIGHT/2, SHAPE_LENGTH, SHAPE_HEIGHT/2);
                c->curveto(SHAPE_LENGTH, (1 + C1) * SHAPE_HEIGHT/2, (1 + C1) * SHAPE_LENGTH/2, SHAPE_HEIGHT, SHAPE_LENGTH/2, SHAPE_HEIGHT);
                c->curveto((1 - C1) * SHAPE_LENGTH/2, SHAPE_HEIGHT, 0, (1 + C1) * SHAPE_HEIGHT/2, 0, SHAPE_HEIGHT/2);
                c->closepath();
                spdc_paste_curve_as_freehand_shape(c->get_pathvector(), dc, item);
                c->unref();

                shape_applied = true;
                break;
            }
            case CLIPBOARD:
            {
                // take shape from clipboard;
                Inkscape::UI::ClipboardManager *cm = Inkscape::UI::ClipboardManager::get();
                if(cm->paste(SP_ACTIVE_DESKTOP,true) == true){
                    SPItem * pasted_clipboard = dc->selection->singleItem();
                    if(pasted_clipboard){
                        Inkscape::XML::Node *pasted_clipboard_root = pasted_clipboard->getRepr();
                        Inkscape::XML::Node *path = sp_repr_lookup_name(pasted_clipboard_root, "svg:path", -1); // unlimited search depth
                        if ( path != NULL ) {
                            gchar const *svgd = path->attribute("d");
                            dc->selection->remove(SP_OBJECT(pasted_clipboard));
                            previous_shape_pathv =  sp_svg_read_pathv(svgd);
                            previous_shape_pathv *= pasted_clipboard->transform;
                            spdc_paste_curve_as_freehand_shape(previous_shape_pathv, dc, item);

                            shape = CLIPBOARD;
                            shape_applied = true;
                            pasted_clipboard->deleteObject();
                        } else {
                            shape = NONE;
                        }
                    } else {
                        shape = NONE;
                    }
                } else {
                    shape = NONE;
                }
                break;
            }
            case BEND_CLIPBOARD:
            {
                Inkscape::UI::ClipboardManager *cm = Inkscape::UI::ClipboardManager::get();
                if(cm->paste(SP_ACTIVE_DESKTOP,true) == true){
                    gchar const *svgd = item->getRepr()->attribute("d");
                    bend_item = dc->selection->singleItem();
                    if(bend_item){
                        bend_item->moveTo(item,false);
                        bend_item->transform.setTranslation(Geom::Point());
                        spdc_apply_bend_shape(svgd, dc, bend_item);
                        dc->selection->add(SP_OBJECT(bend_item));

                        shape = BEND_CLIPBOARD;
                    } else {
                        shape = NONE;
                    }
                } else {
                    shape = NONE;
                }
                break;
            }
            case LAST_APPLIED:
            {
                if(previous_shape_type == CLIPBOARD){
                    if(previous_shape_pathv.size() != 0){
                        spdc_paste_curve_as_freehand_shape(previous_shape_pathv, dc, item);

                        shape_applied = true;
                        shape = CLIPBOARD;
                    } else{
                        shape = NONE;
                    }
                } else {
                    if(bend_item != NULL && bend_item->getRepr() != NULL){
                        gchar const *svgd = item->getRepr()->attribute("d");
                        dc->selection->add(SP_OBJECT(bend_item));
                        sp_selection_duplicate(dc->desktop);
                        dc->selection->remove(SP_OBJECT(bend_item));
                        bend_item = dc->selection->singleItem();
                        if(bend_item){
                            bend_item->moveTo(item,false);
                            Geom::Coord expansion_X = bend_item->transform.expansionX();
                            Geom::Coord expansion_Y = bend_item->transform.expansionY();
                            bend_item->transform = Geom::Affine(1,0,0,1,0,0);
                            bend_item->transform.setExpansionX(expansion_X);
                            bend_item->transform.setExpansionY(expansion_Y);
                            spdc_apply_bend_shape(svgd, dc, bend_item);
                            dc->selection->add(SP_OBJECT(bend_item));

                            shape = BEND_CLIPBOARD;
                        } else {
                            shape = NONE;
                        }
                    } else {
                        shape = NONE;
                    }
                }
                break;
            }
            default:
                break;
        }
        previous_shape_type = shape;

        if (shape_applied) {
            // apply original stroke color as fill and unset stroke; then return
            SPCSSAttr *css = sp_repr_css_attr_new();

            if (!strcmp(cstroke, "none")){
                sp_repr_css_set_property (css, "fill", "black");
            } else {
                sp_repr_css_set_property (css, "fill", cstroke);
            }
            sp_repr_css_set_property (css, "stroke", "none");
            sp_desktop_apply_css_recursive(item, css, true);
            sp_repr_css_attr_unref(css);
            return;
        }

        if (dc->waiting_LPE_type != INVALID_LPE) {
            Effect::createAndApply(dc->waiting_LPE_type, dc->desktop->doc(), item);
            dc->waiting_LPE_type = INVALID_LPE;

            if (SP_IS_LPETOOL_CONTEXT(dc)) {
                // since a geometric LPE was applied, we switch back to "inactive" mode
                lpetool_context_switch_mode(SP_LPETOOL_CONTEXT(dc), INVALID_LPE);
            }
        }
        if (SP_IS_PEN_CONTEXT(dc)) {
            SP_PEN_CONTEXT(dc)->setPolylineMode();
        }
    }
}
Ejemplo n.º 8
0
static gint sp_zoom_context_root_handler(SPEventContext *event_context, GdkEvent *event)
{
    SPDesktop *desktop = event_context->desktop;
    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
	
	SPZoomContext *zc = SP_ZOOM_CONTEXT(event_context);
    tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
    double const zoom_inc = prefs->getDoubleLimited("/options/zoomincrement/value", M_SQRT2, 1.01, 10);

    gint ret = FALSE;

    switch (event->type) {
        case GDK_BUTTON_PRESS:
        {
            Geom::Point const button_w(event->button.x, event->button.y);
            Geom::Point const button_dt(desktop->w2d(button_w));
            if (event->button.button == 1 && !event_context->space_panning) {
                // save drag origin
                xp = (gint) event->button.x;
                yp = (gint) event->button.y;
                within_tolerance = true;

                Inkscape::Rubberband::get(desktop)->start(desktop, button_dt);

                escaped = false;

                ret = TRUE;
            } else if (event->button.button == 3) {
                double const zoom_rel( (event->button.state & GDK_SHIFT_MASK)
                                       ? zoom_inc
                                       : 1 / zoom_inc );
                desktop->zoom_relative_keep_point(button_dt, zoom_rel);
                ret = TRUE;
            }
			
			sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
								GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK,
								NULL, event->button.time);
			zc->grabbed = SP_CANVAS_ITEM(desktop->acetate);
				
            break;
        }

	case GDK_MOTION_NOTIFY:
            if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {
                ret = TRUE;

                if ( within_tolerance
                     && ( abs( (gint) event->motion.x - xp ) < tolerance )
                     && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
                    break; // do not drag if we're within tolerance from origin
                }
                // Once the user has moved farther than tolerance from the original location
                // (indicating they intend to move the object, not click), then always process the
                // motion notify coordinates as given (no snapping back to origin)
                within_tolerance = false;

                Geom::Point const motion_w(event->motion.x, event->motion.y);
                Geom::Point const motion_dt(desktop->w2d(motion_w));
                Inkscape::Rubberband::get(desktop)->move(motion_dt);
                gobble_motion_events(GDK_BUTTON1_MASK);
            }
            break;

      	case GDK_BUTTON_RELEASE:
        {
            Geom::Point const button_w(event->button.x, event->button.y);
            Geom::Point const button_dt(desktop->w2d(button_w));
            if ( event->button.button == 1  && !event_context->space_panning) {
                Geom::OptRect const b = Inkscape::Rubberband::get(desktop)->getRectangle();
                if (b && !within_tolerance) {
                    desktop->set_display_area(*b, 10);
                } else if (!escaped) {
                    double const zoom_rel( (event->button.state & GDK_SHIFT_MASK)
                                           ? 1 / zoom_inc
                                           : zoom_inc );
                    desktop->zoom_relative_keep_point(button_dt, zoom_rel);
                }
                ret = TRUE;
            } 
            Inkscape::Rubberband::get(desktop)->stop();
			
			if (zc->grabbed) {
				sp_canvas_item_ungrab(zc->grabbed, event->button.time);
				zc->grabbed = NULL;
			}
			
            xp = yp = 0;
            escaped = false;
            break;
        }
        case GDK_KEY_PRESS:
            switch (get_group0_keyval (&event->key)) {
                case GDK_Escape:
                    Inkscape::Rubberband::get(desktop)->stop();
                    xp = yp = 0;
                    escaped = true;
                    ret = TRUE;
                    break;
                case GDK_Up:
                case GDK_Down:
                case GDK_KP_Up:
                case GDK_KP_Down:
                    // prevent the zoom field from activation
                    if (!MOD__CTRL_ONLY)
                        ret = TRUE;
                    break;
                case GDK_Shift_L:
                case GDK_Shift_R:
                    event_context->cursor_shape = SP_ZOOM_OUT_CURSOR;
                    sp_event_context_update_cursor(event_context);
                    break;
                default:
			break;
		}
		break;
	case GDK_KEY_RELEASE:
            switch (get_group0_keyval (&event->key)) {
		case GDK_Shift_L:
		case GDK_Shift_R:
                    event_context->cursor_shape = SP_ZOOM_CURSOR;
                    sp_event_context_update_cursor(event_context);
                    break;
		default:
                    break;
		}
            break;
	default:
            break;
    }

    if (!ret) {
        if (((SPEventContextClass *) parent_class)->root_handler) {
            ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
        }
    }

    return ret;
}
Ejemplo n.º 9
0
/* interpolates the sketched curve and tweaks the current sketch interpolation*/
static void
sketch_interpolate(SPPencilContext *pc)
{
    g_assert( pc->ps.size() > 1 );

    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
    double const tol = prefs->getDoubleLimited("/tools/freehand/pencil/tolerance", 10.0, 1.0, 100.0) * 0.4;
    double const tolerance_sq = 0.02 * square( pc->desktop->w2d().descrim() * 
                                               tol) * exp(0.2*tol - 2);

    bool average_all_sketches = prefs->getBool("/tools/freehand/pencil/average_all_sketches", true);

    g_assert(is_zero(pc->req_tangent)
             || is_unit_vector(pc->req_tangent));
    Geom::Point const tHatEnd(0, 0);

    guint n_points  = pc->ps.size();
    pc->red_curve->reset();
    pc->red_curve_is_valid = false;

    Geom::Point * b = g_new(Geom::Point, 4*n_points);
    Geom::Point * points = g_new(Geom::Point, 4*n_points);
    for (unsigned i = 0; i < pc->ps.size(); i++) { 
        points[i] = pc->ps[i];
    }

    // worst case gives us a segment per point
    int max_segs = 4*n_points;

    int const n_segs = Geom::bezier_fit_cubic_r(b, points, n_points,
                                             tolerance_sq, max_segs);

    if ( n_segs > 0)
    {
        Geom::Path fit(b[0]);
        for (int c = 0; c < n_segs; c++) { 
            fit.appendNew<Geom::CubicBezier>(b[4*c+1], b[4*c+2], b[4*c+3]);
        }
        Geom::Piecewise<Geom::D2<Geom::SBasis> > fit_pwd2 = fit.toPwSb();

        double t =0.;
        if ( pc->sketch_n > 0 ) {
            if (average_all_sketches) {
                // Average = (sum of all) / n
                //         = (sum of all + new one) / n+1
                //         = ((old average)*n + new one) / n+1
                t = pc->sketch_n / (pc->sketch_n + 1.);
            } else {
                t = 0.5;
            }
            pc->sketch_interpolation = Geom::lerp(t, fit_pwd2, pc->sketch_interpolation);
        } else {
            pc->sketch_interpolation = fit_pwd2;
        }
        pc->sketch_n++;

        pc->green_curve->reset();
        pc->green_curve->set_pathvector(Geom::path_from_piecewise(pc->sketch_interpolation, 0.01));
        sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), pc->green_curve);

        /* Fit and draw and copy last point */
        g_assert(!pc->green_curve->is_empty());

        /* Set up direction of next curve. */
        {
            Geom::CubicBezier const * last_seg = dynamic_cast<Geom::CubicBezier const *>(pc->green_curve->last_segment());
            g_assert( last_seg );      // Relevance: validity of (*last_seg)[2]
            pc->p[0] = last_seg->finalPoint();
            pc->npoints = 1;
            Geom::Point const req_vec( pc->p[0] - (*last_seg)[2] );
            pc->req_tangent = ( ( Geom::is_zero(req_vec) || !in_svg_plane(req_vec) )
                                ? Geom::Point(0, 0)
                                : Geom::unit_vector(req_vec) );
        }
    }
    g_free(b);
    g_free(points);
    pc->ps.clear();
}
Ejemplo n.º 10
0
/**
Handles all keyboard and mouse input for meshs.
*/
static gint
sp_mesh_context_root_handler(SPEventContext *event_context, GdkEvent *event)
{
    // static int count = 0;
    // std::cout << "sp_mesh_context_root_handler: " << count++ << std::endl;
    static bool dragging;

    SPDesktop *desktop = event_context->desktop;
    Inkscape::Selection *selection = sp_desktop_selection (desktop);
    Inkscape::Preferences *prefs = Inkscape::Preferences::get();

    SPMeshContext *rc = SP_MESH_CONTEXT(event_context);

    event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
    double const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000, "px"); // in px

    GrDrag *drag = event_context->_grdrag;
    g_assert (drag);

    gint ret = FALSE;
    switch (event->type) {

    case GDK_2BUTTON_PRESS:

#ifdef DEBUG_MESH
        std::cout << "sp_mesh_context_root_handler: GDK_2BUTTON_PRESS" << std::endl;
#endif

        // Double click:
        //  If over a mesh line, divide mesh row/column
        //  If not over a line, create new gradients for selected objects.

        if ( event->button.button == 1 ) {

            // Are we over a mesh line?
            bool over_line = false;
            SPCtrlCurve *line = NULL;
            if (drag->lines) {
                for (GSList *l = drag->lines; (l != NULL) && (!over_line); l = l->next) {
                    line = (SPCtrlCurve*) l->data;
                    over_line |= sp_mesh_context_is_over_line (rc, (SPItem*) line, Geom::Point(event->motion.x, event->motion.y));
                }
            }

            if (over_line) {
                // We take the first item in selection, because with doubleclick, the first click
                // always resets selection to the single object under cursor
                sp_mesh_context_split_near_point(rc, SP_ITEM(selection->itemList()->data), rc->mousepoint_doc, event->button.time);

            } else {
                // Create a new gradient with default coordinates.

                for (GSList const* i = selection->itemList(); i != NULL; i = i->next) {

                    SPItem *item = SP_ITEM(i->data);
                    SPGradientType new_type = SP_GRADIENT_TYPE_MESH;
                    Inkscape::PaintTarget fsmode = (prefs->getInt("/tools/gradient/newfillorstroke", 1) != 0) ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE;

#ifdef DEBUG_MESH
                    std::cout << "sp_mesh_context_root_handler: creating new mesh on: " << (fsmode == Inkscape::FOR_FILL ? "Fill" : "Stroke") << std::endl;
#endif
                    SPGradient *vector = sp_gradient_vector_for_object(sp_desktop_document(desktop), desktop, item, fsmode);

                    SPGradient *priv = sp_item_set_gradient(item, vector, new_type, fsmode);
                    sp_gradient_reset_to_userspace(priv, item);
                }

                DocumentUndo::done(sp_desktop_document (desktop), SP_VERB_CONTEXT_MESH,
                                   _("Create default mesh"));
            }
            ret = TRUE;
        }
        break;

    case GDK_BUTTON_PRESS:

#ifdef DEBUG_MESH
        std::cout << "sp_mesh_context_root_handler: GDK_BUTTON_PRESS" << std::endl;
#endif
        // Button down
        //  If Shift key down: do rubber band selection
        //  Else set origin for drag. A drag creates a new gradient if one does not exist
 
        if ( event->button.button == 1 && !event_context->space_panning ) {
            Geom::Point button_w(event->button.x, event->button.y);

            // save drag origin
            event_context->xp = (gint) button_w[Geom::X];
            event_context->yp = (gint) button_w[Geom::Y];
            event_context->within_tolerance = true;

            dragging = true;

            Geom::Point button_dt = desktop->w2d(button_w);
            if (event->button.state & GDK_SHIFT_MASK) {
                Inkscape::Rubberband::get(desktop)->start(desktop, button_dt);
            } else {
                // remember clicked item, disregarding groups, honoring Alt; do nothing with Crtl to
                // enable Ctrl+doubleclick of exactly the selected item(s)
                if (!(event->button.state & GDK_CONTROL_MASK))
                    event_context->item_to_select = sp_event_context_find_item (desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE);

                if (!selection->isEmpty()) {
                    SnapManager &m = desktop->namedview->snap_manager;
                    m.setup(desktop);
                    m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
                    m.unSetup();
                }
                rc->origin = button_dt;
            }

            ret = TRUE;
        }
        break;

    case GDK_MOTION_NOTIFY:

        // Mouse move

        if ( dragging
             && ( event->motion.state & GDK_BUTTON1_MASK ) && !event_context->space_panning )
        {
 
#ifdef DEBUG_MESH
            std::cout << "sp_mesh_context_root_handler: GDK_MOTION_NOTIFY: Dragging" << std::endl;
#endif
            if ( event_context->within_tolerance
                 && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance )
                 && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) {
                break; // do not drag if we're within tolerance from origin
            }
            // Once the user has moved farther than tolerance from the original location
            // (indicating they intend to draw, not click), then always process the
            // motion notify coordinates as given (no snapping back to origin)
            event_context->within_tolerance = false;

            Geom::Point const motion_w(event->motion.x,
                                     event->motion.y);
            Geom::Point const motion_dt = event_context->desktop->w2d(motion_w);

            if (Inkscape::Rubberband::get(desktop)->is_started()) {
                Inkscape::Rubberband::get(desktop)->move(motion_dt);
                event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw around</b> handles to select them"));
            } else {
                // Create new gradient with coordinates determined by drag.
                sp_mesh_drag(*rc, motion_dt, event->motion.state, event->motion.time);
            }
            gobble_motion_events(GDK_BUTTON1_MASK);

            ret = TRUE;

        } else {
            // Not dragging

            // Do snapping
            if (!drag->mouseOver() && !selection->isEmpty()) {
                SnapManager &m = desktop->namedview->snap_manager;
                m.setup(desktop);

                Geom::Point const motion_w(event->motion.x, event->motion.y);
                Geom::Point const motion_dt = event_context->desktop->w2d(motion_w);

                m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE));
                m.unSetup();
            }

            // Highlight corner node corresponding to side or tensor node
            if( drag->mouseOver() ) {
                // MESH FIXME: Light up corresponding corner node corresponding to node we are over.
                // See "pathflash" in ui/tools/node-tool.cpp for ideas.
                // Use desktop->add_temporary_canvasitem( SPCanvasItem, milliseconds );
            }

            // Change cursor shape if over line
            bool over_line = false;
            if (drag->lines) {
                for (GSList *l = drag->lines; l != NULL; l = l->next) {
                    over_line |= sp_mesh_context_is_over_line (rc, (SPItem*) l->data, Geom::Point(event->motion.x, event->motion.y));
                }
            }

            if (rc->cursor_addnode && !over_line) {
                event_context->cursor_shape = cursor_gradient_xpm;
                sp_event_context_update_cursor(event_context);
                rc->cursor_addnode = false;
            } else if (!rc->cursor_addnode && over_line) {
                event_context->cursor_shape = cursor_gradient_add_xpm;
                sp_event_context_update_cursor(event_context);
                rc->cursor_addnode = true;
            }
        }
        break;

    case GDK_BUTTON_RELEASE:

#ifdef DEBUG_MESH
        std::cout << "sp_mesh_context_root_handler: GDK_BUTTON_RELEASE" << std::endl;
#endif

        event_context->xp = event_context->yp = 0;
        if ( event->button.button == 1 && !event_context->space_panning ) {

            // Check if over line
            bool over_line = false;
            SPCtrlLine *line = NULL;
            if (drag->lines) {
                for (GSList *l = drag->lines; (l != NULL) && (!over_line); l = l->next) {
                    line = (SPCtrlLine*) l->data;
                    over_line = sp_mesh_context_is_over_line (rc, (SPItem*) line, Geom::Point(event->motion.x, event->motion.y));
                    if (over_line)
                        break;
                }
            }

            if ( (event->button.state & GDK_CONTROL_MASK) && (event->button.state & GDK_MOD1_MASK ) ) {
                if (over_line && line) {
                    sp_mesh_context_split_near_point(rc, line->item, rc->mousepoint_doc, 0);
                    ret = TRUE;
                }

            } else {

                dragging = false;

                // unless clicked with Ctrl (to enable Ctrl+doubleclick).
                if (event->button.state & GDK_CONTROL_MASK) {
                    ret = TRUE;
                    break;
                }

                if (!event_context->within_tolerance) {
                    // we've been dragging, either do nothing (grdrag handles that),
                    // or rubberband-select if we have rubberband
                    Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop);
                    if (r->is_started() && !event_context->within_tolerance) {
                        // this was a rubberband drag
                        if (r->getMode() == RUBBERBAND_MODE_RECT) {
                            Geom::OptRect const b = r->getRectangle();
                            drag->selectRect(*b);
                        }
                    }

                } else if (event_context->item_to_select) {
                    if (over_line && line) {
                        // Clicked on an existing mesh line, don't change selection. This stops
                        // possible change in selection during a double click with overlapping objects
                    }
                    else {
                        // no dragging, select clicked item if any
                        if (event->button.state & GDK_SHIFT_MASK) {
                            selection->toggle(event_context->item_to_select);
                        } else {
                            selection->set(event_context->item_to_select);
                        }
                    }
                } else {
                    // click in an empty space; do the same as Esc
                    if (drag->selected) {
                        drag->deselectAll();
                    } else {
                        selection->clear();
                    }
                }

                event_context->item_to_select = NULL;
                ret = TRUE;
            }
            Inkscape::Rubberband::get(desktop)->stop();
        }
        break;

    case GDK_KEY_PRESS:

#ifdef DEBUG_MESH
        std::cout << "sp_mesh_context_root_handler: GDK_KEY_PRESS" << std::endl;
#endif

        // FIXME: tip
        switch (get_group0_keyval (&event->key)) {
        case GDK_KEY_Alt_L:
        case GDK_KEY_Alt_R:
        case GDK_KEY_Control_L:
        case GDK_KEY_Control_R:
        case GDK_KEY_Shift_L:
        case GDK_KEY_Shift_R:
        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt (at least on my machine)
        case GDK_KEY_Meta_R:
            sp_event_show_modifier_tip (event_context->defaultMessageContext(), event,
                                        _("FIXME<b>Ctrl</b>: snap mesh angle"),
                                        _("FIXME<b>Shift</b>: draw mesh around the starting point"),
                                        NULL);
            break;

        case GDK_KEY_A:
        case GDK_KEY_a:
            if (MOD__CTRL_ONLY && drag->isNonEmpty()) {
                drag->selectAll();
                ret = TRUE;
            }
            break;

        case GDK_KEY_Escape:
            if (drag->selected) {
                drag->deselectAll();
            } else {
                selection->clear();
            }
            ret = TRUE;
            //TODO: make dragging escapable by Esc
            break;

        case GDK_KEY_Left: // move handle left
        case GDK_KEY_KP_Left:
        case GDK_KEY_KP_4:
            if (!MOD__CTRL) { // not ctrl
                gint mul = 1 + gobble_key_events(
                    get_group0_keyval(&event->key), 0); // with any mask
                if (MOD__ALT) { // alt
                    if (MOD__SHIFT) drag->selected_move_screen(mul*-10, 0); // shift
                    else drag->selected_move_screen(mul*-1, 0); // no shift
                }
                else { // no alt
                    if (MOD__SHIFT) drag->selected_move(mul*-10*nudge, 0); // shift
                    else drag->selected_move(mul*-nudge, 0); // no shift
                }
                ret = TRUE;
            }
            break;
        case GDK_KEY_Up: // move handle up
        case GDK_KEY_KP_Up:
        case GDK_KEY_KP_8:
            if (!MOD__CTRL) { // not ctrl
                gint mul = 1 + gobble_key_events(
                    get_group0_keyval(&event->key), 0); // with any mask
                if (MOD__ALT) { // alt
                    if (MOD__SHIFT) drag->selected_move_screen(0, mul*10); // shift
                    else drag->selected_move_screen(0, mul*1); // no shift
                }
                else { // no alt
                    if (MOD__SHIFT) drag->selected_move(0, mul*10*nudge); // shift
                    else drag->selected_move(0, mul*nudge); // no shift
                }
                ret = TRUE;
            }
            break;

        case GDK_KEY_Right: // move handle right
        case GDK_KEY_KP_Right:
        case GDK_KEY_KP_6:
            if (!MOD__CTRL) { // not ctrl
                gint mul = 1 + gobble_key_events(
                    get_group0_keyval(&event->key), 0); // with any mask
                if (MOD__ALT) { // alt
                    if (MOD__SHIFT) drag->selected_move_screen(mul*10, 0); // shift
                    else drag->selected_move_screen(mul*1, 0); // no shift
                }
                else { // no alt
                    if (MOD__SHIFT) drag->selected_move(mul*10*nudge, 0); // shift
                    else drag->selected_move(mul*nudge, 0); // no shift
                }
                ret = TRUE;
            }
            break;

        case GDK_KEY_Down: // move handle down
        case GDK_KEY_KP_Down:
        case GDK_KEY_KP_2:
            if (!MOD__CTRL) { // not ctrl
                gint mul = 1 + gobble_key_events(
                    get_group0_keyval(&event->key), 0); // with any mask
                if (MOD__ALT) { // alt
                    if (MOD__SHIFT) drag->selected_move_screen(0, mul*-10); // shift
                    else drag->selected_move_screen(0, mul*-1); // no shift
                }
                else { // no alt
                    if (MOD__SHIFT) drag->selected_move(0, mul*-10*nudge); // shift
                    else drag->selected_move(0, mul*-nudge); // no shift
                }
                ret = TRUE;
            }
            break;

        case GDK_KEY_Insert:
        case GDK_KEY_KP_Insert:
            // with any modifiers:
            //sp_gradient_context_add_stops_between_selected_stops (rc);
            std::cout << "Inserting stops between selected stops not implemented yet" << std::endl;
            ret = TRUE;
            break;

        case GDK_KEY_Delete:
        case GDK_KEY_KP_Delete:
        case GDK_KEY_BackSpace:
            if ( drag->selected ) {
                std::cout << "Deleting mesh stops not implemented yet" << std::endl;
                ret = TRUE;
            }
            break;

        // Mesh Operations --------------------------------------------

        case GDK_KEY_b:  // Toggle mesh side between lineto and curveto.
        case GDK_KEY_B: 
            if (MOD__ALT && drag->isNonEmpty() && drag->hasSelection()) {
                sp_mesh_context_corner_operation ( rc, MG_CORNER_SIDE_TOGGLE );
                ret = TRUE;
            }
            break;

        case GDK_KEY_c:  // Convert mesh side from generic Bezier to Bezier approximating arc,
        case GDK_KEY_C:  // preserving handle direction.
            if (MOD__ALT && drag->isNonEmpty() && drag->hasSelection()) {
                sp_mesh_context_corner_operation ( rc, MG_CORNER_SIDE_ARC );
                ret = TRUE;
            }
            break;

        case GDK_KEY_g:  // Toggle mesh tensor points on/off
        case GDK_KEY_G: 
            if (MOD__ALT && drag->isNonEmpty() && drag->hasSelection()) {
                sp_mesh_context_corner_operation ( rc, MG_CORNER_TENSOR_TOGGLE );
                ret = TRUE;
            }
            break;

        case GDK_KEY_j:  // Smooth corner color
        case GDK_KEY_J:
            if (MOD__ALT && drag->isNonEmpty() && drag->hasSelection()) {
                sp_mesh_context_corner_operation ( rc, MG_CORNER_COLOR_SMOOTH );
                ret = TRUE;
            }
            break;

        case GDK_KEY_k:  // Pick corner color
        case GDK_KEY_K:
            if (MOD__ALT && drag->isNonEmpty() && drag->hasSelection()) {
                sp_mesh_context_corner_operation ( rc, MG_CORNER_COLOR_PICK );
                ret = TRUE;
            }
            break;

        default:
            break;
        }

        break;

    case GDK_KEY_RELEASE:

#ifdef DEBUG_MESH
        std::cout << "sp_mesh_context_root_handler: GDK_KEY_RELEASE" << std::endl;
#endif
        switch (get_group0_keyval (&event->key)) {
        case GDK_KEY_Alt_L:
        case GDK_KEY_Alt_R:
        case GDK_KEY_Control_L:
        case GDK_KEY_Control_R:
        case GDK_KEY_Shift_L:
        case GDK_KEY_Shift_R:
        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt
        case GDK_KEY_Meta_R:
            event_context->defaultMessageContext()->clear();
            break;
        default:
            break;
        }
        break;
    default:
        break;
    }

    if (!ret) {
        if (((SPEventContextClass *) parent_class)->root_handler) {
            ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
        }
    }

    return ret;
}