Element editor: add polygon is managed by an esevent

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@3466 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/editor/esevent/eseventaddpolygon.cpp

@@ -0,0 +1,117 @@
+/*
+	Copyright 2006-2014 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include <QObject>
+
+#include "eseventaddpolygon.h"
+#include "elementscene.h"
+#include "partpolygon.h"
+#include "editorcommands.h"
+
+/**
+ * @brief ESEventAddPolygon::ESEventAddPolygon
+ * @param scene
+ */
+ESEventAddPolygon::ESEventAddPolygon(ElementScene *scene) :
+	ESEventInterface(scene),
+	m_polygon(nullptr)
+{}
+
+/**
+ * @brief ESEventAddPolygon::~ESEventAddPolygon
+ */
+ESEventAddPolygon::~ESEventAddPolygon() {
+	if (m_running || m_abort)
+		delete m_polygon;
+}
+
+/**
+ * @brief ESEventAddPolygon::mousePressEvent
+ * @param event
+ * @return
+ */
+bool ESEventAddPolygon::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+	if (event -> button() == Qt::LeftButton) {
+		if(!m_running) m_running = true;
+		QPointF pos = m_scene->snapToGrid(event -> scenePos());
+
+		//create new polygon
+		if (!m_polygon) {
+			m_polygon = new PartPolygon(m_editor, 0, m_scene);
+			m_polygon -> addPoint(pos);
+		}
+
+		m_polygon -> addPoint(pos);
+		return true;
+	}
+	return false;
+}
+
+/**
+ * @brief ESEventAddPolygon::mouseMoveEvent
+ * @param event
+ * @return
+ */
+bool ESEventAddPolygon::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+	updateHelpCross(event -> scenePos());
+	if (!m_polygon) return false;
+
+	m_polygon -> setLastPoint(m_scene -> snapToGrid(event -> scenePos()));
+	return true;
+}
+
+/**
+ * @brief ESEventAddPolygon::mouseReleaseEvent
+ * @param event
+ * @return
+ */
+bool ESEventAddPolygon::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
+	if (event -> button() == Qt::RightButton) {
+		if (m_polygon) {
+			m_polygon -> removeLastPoint();
+
+			if (m_polygon -> polygon().size() > 1)
+				{ m_polygon -> setLastPoint(m_scene -> snapToGrid(event -> scenePos())); }
+			else
+				{ delete m_polygon; m_polygon = nullptr; }
+		}
+		else
+			{ m_running = false; }
+
+		return true;
+	}
+	return false;
+}
+
+/**
+ * @brief ESEventAddPolygon::mouseDoubleClickEvent
+ * @param event
+ * @return
+ */
+bool ESEventAddPolygon::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) {
+	if (event -> button() == Qt::LeftButton) {
+		if (m_polygon) {
+			m_polygon -> addPoint(m_scene -> snapToGrid(event -> scenePos()));
+			m_scene   -> undoStack().push(new AddPartCommand(QObject::tr("Polygone"), m_scene, m_polygon));
+
+			//Set m_polygon to nullptr for create new polygon at next mouse press
+			m_polygon = nullptr;
+			return true;
+		}
+	}
+	return false;
+}