From ca4103b75a7090fab7f8438af3b1e75625776c93 Mon Sep 17 00:00:00 2001
From: xavierqet
 <xavierqet@r9  xavierqet  2006-10-30 20:28:16 +0100 (lun. 30 oct. 2006)>
Date: Sat, 15 Sep 2007 23:45:27 +0000
Subject: [PATCH] Il est desormais possible de deplacer les elements d'un
 schema avec les fleches du clavier

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@123 bfdf4180-ca20-0410-9c96-a3a8aa849046
---
 diagram.cpp | 33 ++++++++++++++++++++++++++++++++
 diagram.h   |  2 ++
 element.cpp | 54 +++++++++++++++++++++++++++--------------------------
 element.h   |  1 +
 4 files changed, 64 insertions(+), 26 deletions(-)

diff --git a/diagram.cpp b/diagram.cpp
index 60087ddf7..5483f2dc9 100644
--- a/diagram.cpp
+++ b/diagram.cpp
@@ -70,6 +70,39 @@ void Diagram::drawBackground(QPainter *p, const QRectF &r) {
 	p -> restore();
 }
 
+/**
+	Gere le clavier
+	@param e QKeyEvent decrivant l'evenement clavier
+*/
+void Diagram::keyPressEvent(QKeyEvent *e) {
+	qDebug() << "Diagram::keyPressEvent";
+	QPointF movement;
+	switch(e -> key()) {
+		case Qt::Key_Left:  movement = QPointF(-GRILLE_X, 0.0); break;
+		case Qt::Key_Right: movement = QPointF(+GRILLE_X, 0.0); break;
+		case Qt::Key_Up:    movement = QPointF(0.0, -GRILLE_Y); break;
+		case Qt::Key_Down:  movement = QPointF(0.0, +GRILLE_Y); break;
+	}
+	if (!movement.isNull()) {
+		QSet<Element *> moved_elements = elementsToMove();
+		if (!moved_elements.isEmpty()) {
+			Element *first_elmt;
+			foreach(Element *elmt, moved_elements) {
+				first_elmt = elmt;
+				break;
+			}
+			first_elmt -> setPos(first_elmt -> pos() + movement);
+			first_elmt -> moveOtherElements(movement);
+		}
+	}
+	QGraphicsScene::keyPressEvent(e);
+}
+
+void Diagram::keyReleaseEvent(QKeyEvent *e) {
+	invalidateMovedElements();
+	QGraphicsScene::keyReleaseEvent(e);
+}
+
 /**
 	Exporte le schema vers une image
 	@return Une QImage representant le schema
diff --git a/diagram.h b/diagram.h
index e8945e428..039980063 100644
--- a/diagram.h
+++ b/diagram.h
@@ -38,6 +38,8 @@ class Diagram : public QGraphicsScene {
 	// methodes
 	public:
 	void drawBackground(QPainter *, const QRectF &);
+	void keyPressEvent(QKeyEvent *);
+	void keyReleaseEvent(QKeyEvent *);
 	
 	// fonctions relatives a la pose de conducteurs
 	void setConducer(bool);
diff --git a/element.cpp b/element.cpp
index 7342396e6..1c52995b4 100644
--- a/element.cpp
+++ b/element.cpp
@@ -228,35 +228,37 @@ void Element::mouseMoveEvent(QGraphicsSceneMouseEvent *e) {
 	if (e -> buttons() & Qt::LeftButton) {
 		QPointF oldPos = pos();
 		setPos(mapToParent(e -> pos()) - matrix().map(e -> buttonDownPos(Qt::LeftButton)));
-		QPointF diff = pos() - oldPos;
-		
-		// inutile de deplacer les autres elements s'il n'y a pas eu de mouvement concret
-		if (diff.isNull()) return;
-		
-		// recupere le schema parent
-		if (!scene()) return;
-		Diagram *diagram = qobject_cast<Diagram *>(scene());
-		if (!diagram) return;
-		
-		// deplace les elements selectionnes
-		foreach(Element *element, diagram -> elementsToMove()) {
-			if (element == this) continue;
-			element -> setPos(element -> pos() + diff);
-		};
-		
-		// deplace certains conducteurs
-		foreach(Conducer *conducer, diagram -> conducersToMove()) {
-			conducer -> setPos(conducer -> pos() + diff);
-		}
-		
-		// recalcule les autres conducteurs
-		const QHash<Conducer *, Terminal *> &conducers_modify = diagram -> conducersToUpdate();
-		foreach(Conducer *conducer, conducers_modify.keys()) {
-			conducer -> updateWithNewPos(QRectF(), conducers_modify[conducer], conducers_modify[conducer] -> scenePos());
-		}
+		moveOtherElements(pos() - oldPos);
 	} else e -> ignore();
 }
 
+void Element::moveOtherElements(const QPointF &diff) {
+	// inutile de deplacer les autres elements s'il n'y a pas eu de mouvement concret
+	if (diff.isNull()) return;
+	
+	// recupere le schema parent
+	if (!scene()) return;
+	Diagram *diagram = qobject_cast<Diagram *>(scene());
+	if (!diagram) return;
+	
+	// deplace les elements selectionnes
+	foreach(Element *element, diagram -> elementsToMove()) {
+		if (element == this) continue;
+		element -> setPos(element -> pos() + diff);
+	};
+	
+	// deplace certains conducteurs
+	foreach(Conducer *conducer, diagram -> conducersToMove()) {
+		conducer -> setPos(conducer -> pos() + diff);
+	}
+	
+	// recalcule les autres conducteurs
+	const QHash<Conducer *, Terminal *> &conducers_modify = diagram -> conducersToUpdate();
+	foreach(Conducer *conducer, conducers_modify.keys()) {
+		conducer -> updateWithNewPos(QRectF(), conducers_modify[conducer], conducers_modify[conducer] -> amarrageConducer());
+	}
+}
+
 void Element::mouseReleaseEvent(QGraphicsSceneMouseEvent *e) {
 	if (scene()) {
 		Diagram *diagram = qobject_cast<Diagram *>(scene());
diff --git a/element.h b/element.h
index c544f0453..f46517d7b 100644
--- a/element.h
+++ b/element.h
@@ -60,6 +60,7 @@ class Element : public QGraphicsItem {
 	// methodes relatives a la position
 	void setPos(const QPointF &);
 	void setPos(qreal, qreal);
+	void moveOtherElements(const QPointF &);
 	
 	// methodes relatives aux connexions internes
 	bool connexionsInternesAcceptees();