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Chenwenxuan
340
lib/modification/rs_selection.cpp
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340
lib/modification/rs_selection.cpp
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/****************************************************************************
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**
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** This file is part of the LibreCAD project, a 2D CAD program
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**
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** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
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** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file gpl-2.0.txt included in the
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** packaging of this file.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**
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** This copyright notice MUST APPEAR in all copies of the script!
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**
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**********************************************************************/
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#include "rs_selection.h"
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#include "rs_line.h"
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#include "rs_information.h"
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#include "rs_polyline.h"
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#include "rs_entity.h"
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#include "rs_graphic.h"
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#include "rs_layer.h"
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/**
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* Default constructor.
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*
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* @param container The container to which we will add
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* entities. Usually that's an RS_Graphic entity but
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* it can also be a polyline, text, ...
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*/
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RS_Selection::RS_Selection(RS_EntityContainer& container,
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RS_GraphicView* graphicView) {
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this->container = &container;
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this->graphicView = graphicView;
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graphic = container.getGraphic();
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}
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/**
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* Selects or deselects the given entity.
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*/
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void RS_Selection::selectSingle(RS_Entity* e) {
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if (e && (! (e->getLayer() && e->getLayer()->isLocked()))) {
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if (graphicView) {
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graphicView->deleteEntity(e);
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}
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e->toggleSelected();
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if (graphicView) {
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graphicView->drawEntity(e);
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}
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}
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}
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/**
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* Selects all entities on visible layers.
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*/
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void RS_Selection::selectAll(bool select) {
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if (graphicView) {
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//graphicView->deleteEntity(container);
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}
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//container->setSelected(select);
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for(auto e: *container){
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//for (unsigned i=0; i<container->count(); ++i) {
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//RS_Entity* e = container->entityAt(i);
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if (e && e->isVisible()) {
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e->setSelected(select);
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}
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}
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if (graphicView) {
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//graphicView->drawEntity(container);
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graphicView->redraw();
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}
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}
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/**
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* Selects all entities on visible layers.
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*/
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void RS_Selection::invertSelection() {
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if (graphicView) {
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//graphicView->deleteEntity(container);
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}
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for(auto e: *container){
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//for (unsigned i=0; i<container->count(); ++i) {
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//RS_Entity* e = container->entityAt(i);
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if (e && e->isVisible()) {
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e->toggleSelected();
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}
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}
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if (graphicView) {
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//graphicView->drawEntity(container);
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graphicView->redraw();
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}
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}
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/**
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* Selects all entities that are completely in the given window.
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*
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* @param v1 First corner of the window to select.
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* @param v2 Second corner of the window to select.
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* @param select true: select, false: deselect
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*/
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void RS_Selection::selectWindow(const RS_Vector& v1, const RS_Vector& v2,
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bool select, bool cross) {
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container->selectWindow(v1, v2, select, cross);
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if (graphicView) {
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graphicView->redraw();
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}
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}
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/**
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* Selects all entities that are intersected by the given line.
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*
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* @param v1 Startpoint of line.
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* @param v2 Endpoint of line.
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* @param select true: select, false: deselect
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*/
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void RS_Selection::selectIntersected(const RS_Vector& v1, const RS_Vector& v2,
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bool select) {
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RS_Line line{v1, v2};
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bool inters;
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for(auto e: *container){
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//for (unsigned i=0; i<container->count(); ++i) {
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//RS_Entity* e = container->entityAt(i);
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if (e && e->isVisible()) {
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inters = false;
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// select containers / groups:
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if (e->isContainer()) {
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RS_EntityContainer* ec = (RS_EntityContainer*)e;
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for (RS_Entity* e2=ec->firstEntity(RS2::ResolveAll); e2;
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e2=ec->nextEntity(RS2::ResolveAll)) {
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RS_VectorSolutions sol =
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RS_Information::getIntersection(&line, e2, true);
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if (sol.hasValid()) {
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inters = true;
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}
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}
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} else {
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RS_VectorSolutions sol =
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RS_Information::getIntersection(&line, e, true);
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if (sol.hasValid()) {
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inters = true;
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}
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}
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if (inters) {
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if (graphicView) {
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graphicView->deleteEntity(e);
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}
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e->setSelected(select);
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if (graphicView) {
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graphicView->drawEntity(e);
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}
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}
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}
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}
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}
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/**
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* Selects all entities that are connected to the given entity.
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*
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* @param e The entity where the algorithm starts. Must be an atomic entity.
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*/
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void RS_Selection::selectContour(RS_Entity* e) {
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if (e==NULL) {
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return;
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}
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if (!e->isAtomic()) {
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return;
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}
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bool select = !e->isSelected();
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RS_AtomicEntity* ae = (RS_AtomicEntity*)e;
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RS_Vector p1 = ae->getStartpoint();
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RS_Vector p2 = ae->getEndpoint();
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bool found = false;
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// (de)select 1st entity:
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if (graphicView) {
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graphicView->deleteEntity(e);
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}
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e->setSelected(select);
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if (graphicView) {
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graphicView->drawEntity(e);
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}
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do {
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found = false;
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for(auto en: *container){
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//for (unsigned i=0; i<container->count(); ++i) {
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//RS_Entity* en = container->entityAt(i);
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if (en && en->isVisible() &&
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en->isAtomic() && en->isSelected()!=select &&
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(!(en->getLayer() && en->getLayer()->isLocked()))) {
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ae = (RS_AtomicEntity*)en;
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bool doit = false;
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// startpoint connects to 1st point
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if (ae->getStartpoint().distanceTo(p1)<1.0e-4) {
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doit = true;
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p1 = ae->getEndpoint();
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}
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// endpoint connects to 1st point
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else if (ae->getEndpoint().distanceTo(p1)<1.0e-4) {
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doit = true;
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p1 = ae->getStartpoint();
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}
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// startpoint connects to 2nd point
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else if (ae->getStartpoint().distanceTo(p2)<1.0e-4) {
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doit = true;
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p2 = ae->getEndpoint();
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}
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// endpoint connects to 1st point
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else if (ae->getEndpoint().distanceTo(p2)<1.0e-4) {
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doit = true;
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p2 = ae->getStartpoint();
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}
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if (doit) {
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if (graphicView) {
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graphicView->deleteEntity(ae);
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}
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ae->setSelected(select);
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if (graphicView) {
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graphicView->drawEntity(ae);
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}
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found = true;
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}
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}
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}
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} while(found);
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}
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/**
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* Selects all entities on the given layer.
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*/
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void RS_Selection::selectLayer(RS_Entity* e) {
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if (e==NULL) {
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return;
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}
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bool select = !e->isSelected();
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RS_Layer* layer = e->getLayer(true);
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if (layer==NULL) {
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return;
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}
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QString layerName = layer->getName();
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selectLayer(layerName, select);
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}
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/**
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* Selects all entities on the given layer.
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*/
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void RS_Selection::selectLayer(const QString& layerName, bool select) {
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for(auto en: *container){
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if (en && en->isVisible() &&
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en->isSelected()!=select &&
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(!(en->getLayer() && en->getLayer()->isLocked()))) {
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RS_Layer* l = en->getLayer(true);
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if (l && l->getName()==layerName) {
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if (graphicView) {
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graphicView->deleteEntity(en);
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}
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en->setSelected(select);
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if (graphicView) {
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graphicView->drawEntity(en);
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}
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}
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}
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}
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}
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// EOF
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