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machinescene.cpp
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/*!
* \file machinescene.cpp
* \author Simon Coakley
* \date 2012
* \copyright Copyright (c) 2012 University of Sheffield
* \brief Implementation of the graphics Scene for the stategraph
*/
#include <QtGui>
#include "./machinescene.h"
#include "./machine.h"
MachineScene::MachineScene(Machine * m, QObject *parent)
: QGraphicsScene(parent) {
myMode = MoveItem; // InsertItem;
line = 0;
num_states = 0;
num_transitions = 0;
num_messages = 0;
rootMachine = m;
mytype = 0;
zoomOn = false;
myGraphicsView = 0;
scaleFactor = 1.15; // How fast we zoom
selectedFunction = 0;
}
void MachineScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent) {
GraphicsItem * startItem = 0;
GraphicsItem * endItem = 0;
if (line != 0) {
QList<QGraphicsItem *> startItems = items(line->line().p1());
if (startItems.count() && startItems.first() == line)
startItems.removeFirst();
QList<QGraphicsItem *> endItems = items(line->line().p2());
if (endItems.count() && endItems.first() == line)
endItems.removeFirst();
removeItem(line);
delete line;
if (startItems.count() > 0 &&
startItems.first()->type() == GraphicsItem::Type)
startItem = qgraphicsitem_cast<GraphicsItem *>(startItems.first());
if (endItems.count() > 0 &&
endItems.first()->type() == GraphicsItem::Type)
endItem = qgraphicsitem_cast<GraphicsItem *>(endItems.first());
// If start = state and no end item
if (startItem->mytype == 0 && endItem == 0) {
QString s;
s.append("state_");
s.append(QString("%1").arg(num_states));
num_states++;
State * state = machineModel->addState(s);
endItem = new GraphicsItem;
endItem->setState(state);
endItem->agentName = startItem->agentName;
addItem(endItem);
endItem->setPos(mouseEvent->scenePos());
// emit( this->addedState(s) );
statesAndTransitions.append(endItem);
}
// If start = transition and no end item
if (startItem->mytype == 1 && endItem == 0) {
/*endItem = new GraphicsItem;
QString s;
s.append("message_");
s.append(QString("%1").arg(num_messages));
num_messages++;
endItem->mytype = 2;
endItem->setName(s);
//endItem->agentName = startItem->agentName;
addItem(endItem);
endItem->setPos(mouseEvent->scenePos());
messages.append(endItem);*/
}
if (startItem != 0 && endItem != 0 && startItem != endItem) {
// If both states from same agent
if (startItem->mytype == 0 && endItem->mytype == 0 &&
startItem->agentName == endItem->agentName) {
startItem->foreign = false; startItem->update();
endItem->foreign = false; endItem->update();
QString s = "transition_";
s.append(QString("%1").arg(num_transitions));
Transition * t = machineModel->addTransition(s,
startItem->state(), endItem->state());
GraphicsItem * fitem = new GraphicsItem;
fitem->setTransition(t);
fitem->agentName = startItem->agentName;
addTransition(fitem);
fitem->setPos((startItem->x() + endItem->x())/2.0,
(startItem->y() + endItem->y())/2.0);
Arrow * arrow = new Arrow(startItem, fitem);
startItem->addTransitionArrow(arrow);
fitem->addTransitionArrow(arrow);
arrow->drawHead(false);
addArrow(arrow);
arrow->updatePosition();
arrow = new Arrow(fitem, endItem);
fitem->addTransitionArrow(arrow);
endItem->addTransitionArrow(arrow);
addArrow(arrow);
arrow->updatePosition();
// emit( this->addedTransition(fitem) );
}
// If start = transition and end = message
if (startItem->mytype == 1 && endItem->mytype == 2) {
Arrow * arrow = new Arrow(startItem, endItem);
startItem->addMessageArrow(arrow);
endItem->addMessageArrow(arrow);
arrow->isCommunication = true;
addArrow(arrow);
arrow->updatePosition();
machineModel->addMessageToTransition(startItem->transition,
false, endItem->getName());
}
// If start = message and end = transition
if (startItem->mytype == 2 && endItem->mytype == 1) {
Arrow * arrow = new Arrow(startItem, endItem);
startItem->addMessageArrow(arrow);
endItem->addMessageArrow(arrow);
arrow->isCommunication = true;
addArrow(arrow);
arrow->updatePosition();
machineModel->addMessageToTransition(
endItem->transition, true, startItem->getName());
}
}
}
line = 0;
QGraphicsScene::mouseReleaseEvent(mouseEvent);
}
void MachineScene::mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent) {
if (line != 0) {
QLineF newLine(line->line().p1(), mouseEvent->scenePos());
line->setLine(newLine);
/*QGraphicsItem * qitem = itemAt(mouseEvent->scenePos());
if (qitem == 0)
{
GraphicsItem * state = qgraphicsitem_cast<GraphicsItem *>(qitem);
state->setSelected(true);
state->update();
}*/
} else {
QGraphicsScene::mouseMoveEvent(mouseEvent);
}
}
void MachineScene::mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent) {
selectedFunction = 0;
emit(functionSelected(false));
QGraphicsItem * qitem = itemAt(mouseEvent->scenePos());
/* If left mouse click proceed with event,
* which is passed to scene items to select/move them */
if (mouseEvent->button() == Qt::LeftButton) {
if (qitem != 0) {
clearSelection();
qitem->setSelected(true);
if (qgraphicsitem_cast<GraphicsItem *>(qitem)) {
GraphicsItem * sitem =
qgraphicsitem_cast<GraphicsItem *>(qitem);
// if function and not foreign
if (sitem->mytype == 1 && !sitem->foreign) {
selectedFunction = sitem;
emit(functionSelected(true));
}
}
}
QGraphicsScene::mousePressEvent(mouseEvent);
}
/* If right mouse button add state or start line */
if (mouseEvent->button() == Qt::RightButton) {
if (rootMachine->type == 1) { // agent
// qitem = itemAt(mouseEvent->scenePos());
/* If there is no item at mouse position */
if (qitem == 0) {
/* Create new state, add to scene, and set position */
/* GraphicsItem *state = new GraphicsItem;
QString s;
s.append("state_");
s.append(QString("%1").arg(num_states));
num_states++;
state->setName(s);
addItem(state);
state->setPos(mouseEvent->scenePos());
//machine->addState(state);
emit( this->addedState(s, state->getStartState()) );
*/
} else {
// GraphicsItem * state = qgraphicsitem_cast<GraphicsItem *>
// (qitem);
// state->setSelected(true);
// state->update();
/* If graphics item is a state */
if (qgraphicsitem_cast<GraphicsItem *>(qitem)) {
GraphicsItem * sitem =
qgraphicsitem_cast<GraphicsItem *>(qitem);
// if item is a state
// if(sitem->mytype==0)
// {
int count = 0;
for (int i = 0; i < sitem->
getTransitionArrows().size(); i ++) {
Arrow * a = sitem->getTransitionArrows().at(i);
if (a->startItem() == sitem) count++;
}
// if(count < 2)
// {
line = new QGraphicsLineItem(
QLineF(mouseEvent->scenePos(),
mouseEvent->scenePos()));
line->setPen(QPen(Qt::black, 1));
addItem(line);
// }
// else
// {
// emit( updateStatus(
// "States cannot have more than 2 outgoing transitions") );
// }
// }
}
// else qDebug() << "arrow clicked";
}
}
}
}
void MachineScene::wheelEvent(QGraphicsSceneWheelEvent *event) {
// Get the position of the mouse before scaling, in scene coords
// QPointF pointBeforeScale(mapToScene(event->pos()));
// Get the original screen centerpoint
// QPointF screenCenter = GetCenter(); //CurrentCenterPoint;
// (visRect.center());
// Scale the view ie. do the zoom
if (zoomOn) {
if (event->delta() > 0) {
zoomIn();
} else {
zoomOut();
}
}
// Get the position after scaling, in scene coords
// QPointF pointAfterScale(mapToScene(event->pos()));
// Get the offset of how the screen moved
// QPointF offset = pointBeforeScale - pointAfterScale;
// Adjust to the new center for correct zooming
// QPointF newCenter = screenCenter + offset;
// SetCenter(newCenter);
}
void MachineScene::zoomIn() {
if (myGraphicsView) myGraphicsView->scale(scaleFactor, scaleFactor);
}
void MachineScene::zoomOut() {
if (myGraphicsView) myGraphicsView->
scale(1.0 / scaleFactor, 1.0 / scaleFactor);
}
void MachineScene::keyPressEvent(QKeyEvent *event) {
switch (event->key()) {
case Qt::Key_Z:
zoomOn = true;
break;
case Qt::Key_Minus:
zoomOut();
break;
case Qt::Key_Equal:
zoomIn();
break;
default:
event->ignore();
break;
}
}
void MachineScene::keyReleaseEvent(QKeyEvent *event) {
switch (event->key()) {
case Qt::Key_Z:
zoomOn = false;
break;
default:
event->ignore();
break;
}
}
void calcState(GraphicsItem * sitem, QList<int> * layerWidth, int layerHeight) {
// Set state position, width after the current layer width
sitem->setPos(layerWidth->at(sitem->layer)+(sitem->width()/2.0),
20.0 + (sitem->layer*layerHeight));
// Update the layer width to be after the current state
layerWidth->replace(sitem->layer,
(layerWidth->at(sitem->layer) + sitem->width()+10));
// Set layered flag to be 1
sitem->layered = 1;
/*for(int j = 0; j < sitem->getTransitions().size(); j++)
{
Arrow * a = sitem->getTransitions().at(j);
if(sitem->layered < 0) calcState(a->endItem(), layerWidth);
}*/
}
void MachineScene::calcLayers() {
// WARNING: does not currently handle loops
selectedFunction = 0;
int done;
int noLayers;
int noStatesInLayer;
int largestWidth;
int globalLargestWidth = 0;
int globalHighestLayer = 0;
int layerHeight = 80;
QList<int> layerWidth;
QList< QList<GraphicsItem *> > statesLayer;
QList<int> agentWidth;
QList<int> messageWidth;
/* Initialise all graphics items
layer = -1 to show the item has no layerWidth
layered = -1 to show the item has not been layered yet */
for (int i = 0; i < statesAndTransitions.count(); i++) {
statesAndTransitions[i]->layer = -1;
statesAndTransitions[i]->layered = -1;
}
for (int i = 0; i < messages.count(); i++) {
messages[i]->layer = -1;
messages[i]->layered = -1;
}
/* For each agent type */
for (int agent = 0; agent < agentNames.count(); agent++) {
done = 0;
noLayers = 0;
largestWidth = 0;
layerWidth.clear();
statesLayer.clear();
agentWidth.append(0);
int tcount;
int highestn;
/* For each state or transition count the number of arrows
* going to the same state */
for (int i = 0; i < statesAndTransitions.count(); i++) {
GraphicsItem * sitem = statesAndTransitions[i];
if (sitem->agentName == agentNames[agent]) { // If the item is
// from the current agent type
for (int j = 0; j < sitem->
getTransitionArrows().size(); j++) { // for each arrow
tcount = 0;
highestn = 0;
Arrow * a = sitem->getTransitionArrows().at(j);
if (a->startItem() == sitem) { // If the arrow is incoming
for (int k = 0; k < sitem->
getTransitionArrows().size(); k++) {
Arrow * a2 = sitem->getTransitionArrows().at(k);
if (a != a2) {
if (a->endItem() == a2->endItem()) {
tcount++;
if (highestn < a2->number) highestn =
a2->number;
}
}
}
a->total = tcount+1;
a->number = highestn+1;
}
}
}
}
while (done == 0) {
done = 1;
noStatesInLayer = 0;
QList<GraphicsItem*> list;
statesLayer.append(list);
for (int i = 0; i < statesAndTransitions.count(); i++) {
GraphicsItem * sitem = statesAndTransitions[i];
if (sitem->agentName == agentNames[agent]) {
bool include = false;
if (sitem->layer == -1) {
int count_in = 0;
// Find first state
if (noLayers == 0) {
for (int j = 0; j < sitem->
getTransitionArrows().size(); j++) {
Arrow * a = sitem->getTransitionArrows().at(j);
if (a->endItem() == sitem &&
(a->startItem()->layer == -1 ||
a->startItem()->layer == noLayers))
count_in++;
}
if (count_in == 0) {
include = true;
}
} else { // Find next states from current layer
for (int j = 0; j < sitem->
getTransitionArrows().size(); j++) {
Arrow * a =
sitem->getTransitionArrows().at(j);
if (a->endItem() == sitem &&
a->startItem()->layer == noLayers-1) {
include = true;
}
}
}
} else if (sitem->layer == -2) {
include = true;
}
if (include) {
done = 0;
sitem->layer = noLayers;
noStatesInLayer++;
statesLayer[noLayers].append(sitem);
/* Messages */
/* if(sitem->mytype == 0) // if state
{
for(int j = 0; j < sitem->getTransitions().size(); j++)
{
Arrow * a = sitem->getTransitions().at(j);
if(a->endItem()->mytype == 1) // If state next transition
// has incoming message
{
for(int k = 0; k < messages.count(); k++)
{
if(messages[k]->layer == -1)
{
for(int l = 0; l < messages[k]->
getTransitions().size(); l++)
{
Arrow * a2 = messages[k]->getTransitions().at(l);
if(a2->endItem() == a->endItem())
{
messages[k]->layer = noLayers;
noStatesInLayer++;
statesLayer[noLayers].append(messages[k]);
}
}
}
}
}
if(a->startItem()->mytype == 1) // If state before transition
// has outgoing message
{
for(int k = 0; k < messages.count(); k++)
{
for(int l = 0; l < messages[k]->getTransitions().size();
l++)
{
if(messages[k]->layer == -1)
{
Arrow * a2 = messages[k]->getTransitions().at(l);
if(a2->startItem() == a->startItem())
{
messages[k]->layer = noLayers;
noStatesInLayer++;
statesLayer[noLayers].append(messages[k]);
}
}
}
}
}
}
}*/
}
}
}
if (done == 0) {
// Give an order to the states in the same layer
int posCount;
for (int j = 0; j < statesLayer[noLayers].count(); j++) {
statesLayer[noLayers][j]->aveX = 0;
posCount = 0;
for (int k = 0; k <statesLayer[noLayers][j]->
getTransitionArrows().size(); k++) {
Arrow * a = statesLayer[noLayers][j]->
getTransitionArrows().at(k);
// If the end state of the transition is the
// current state
if (a->endItem() == statesLayer[noLayers][j]) {
statesLayer[noLayers][j]->aveX +=
a->startItem()->x();
}
}
if (posCount > 0)
statesLayer[noLayers][j]->aveX =
statesLayer[noLayers][j]->aveX/posCount;
}
// Calculate the x-axis position of the states from left
// side (no centring)
layerWidth.append(0);
// Position states in order that their previous transition
// states were in
GraphicsItem * lowest = 0;
for (int j = 0; j < statesLayer[noLayers].count(); j++) {
int lowestX = -1;
for (int k = 0; k < statesLayer[noLayers].count(); k++) {
if (statesLayer[noLayers][k]->aveX > -1) {
if (lowestX == -1) {
lowestX = statesLayer[noLayers][k]->aveX;
lowest = statesLayer[noLayers][k];
} else if (statesLayer[noLayers][k]->aveX <=
lowestX) {
lowestX = statesLayer[noLayers][k]->aveX;
lowest = statesLayer[noLayers][k];
}
}
}
// Calculate position
calcState(lowest, &layerWidth, layerHeight);
lowest->aveX = -1;
}
// Remove the last gap between states as there is not another
// state to add
layerWidth[noLayers] -= 10.0;
// messageWidth.append(layerWidth[noLayers]);
if (layerWidth[noLayers] > largestWidth)
largestWidth = layerWidth[noLayers];
// If a state has incoming transitions that have not been
// layered
// then remove the state from the current layer and add
// to the next layer
for (int j = 0; j < statesLayer[noLayers].count(); j++) {
bool flag = false;
for (int k = 0; k < statesLayer[noLayers][j]->
getTransitionArrows().size(); k++) {
Arrow * a = statesLayer[noLayers][j]->
getTransitionArrows().at(k);
// If the end state of the transition is the current
// state and
// the start state does not yet have a layer or is
// in the current layer then...
if (a->endItem() == statesLayer[noLayers][j] &&
(a->startItem()->layer == noLayers ||
a->startItem()->layer == -1))
flag = true;
}
if (flag) {
// Add the state to the next layer
statesLayer[noLayers][j]->layer = -2; // noLayers+1;
statesLayer[noLayers][j]->layered = -1;
statesLayer[noLayers].removeAt(j);
j--;
}
}
noLayers++;
}
}
///////////
// qDebug() << largestWidth;
// for(int i = 0; i < noLayers; i++)
// if(messageWidth[i] > largestWidth) largestWidth = messageWidth[i];
// qDebug() << largestWidth;
// largestWidth += 20;
if (largestWidth > globalLargestWidth) globalLargestWidth =
largestWidth;
if (noLayers > globalHighestLayer) globalHighestLayer = noLayers;
agentWidth[agent] = largestWidth;
// nextWidth = largestWidth + ();
// Centre the states
for (int i = 0; i < noLayers; i++) {
for (int j = 0; j < statesLayer[i].count(); j++) {
statesLayer[i][j]->moveBy((largestWidth/2.0) -
(layerWidth[i]/2.0), 0.0);
}
}
}
int rollingWidth = 0;
if (agentNames.count() > 0) rollingWidth = agentWidth[0] + 10;
/* Move agent items so they are separated */
if (agentWidth.count() > 0) {
for (int agent = 1; agent < agentNames.count(); agent++) {
for (int i = 0; i < statesAndTransitions.count(); i++) {
GraphicsItem * sitem = statesAndTransitions[i];
if (sitem->agentName == agentNames[agent]) {
sitem->moveBy(rollingWidth, 0.0);
}
}
rollingWidth += agentWidth[agent] + 10;
}
}
// Handle messages
// if(agentWidth.count() == 1)
// {
for (int i = 0; i < globalHighestLayer; i++)
messageWidth.append(rollingWidth);
/*QList<int> agentMessageCount;
for(int i = 0; i < agentNames.count(); i++)
agentMessageCount.append(0);*/
for (int i = 0; i < messages.count(); i++) {
/*for(int j = 0; j < agentMessageCount.size(); j++)
* agentMessageCount[j] = 0;*/
int lastOutputLayer = -1;
int firstInputLayer = -1;
for (int j = 0; j < messages[i]->getMessageArrows().size(); j++) {
Arrow * a = messages[i]->getMessageArrows().at(j);
if (a->endItem() == messages[i]) {
if (lastOutputLayer == -1 ||
lastOutputLayer < a->startItem()->layer)
lastOutputLayer = a->startItem()->layer;
/*for(int agent = 0; agent < agentNames.count(); agent++)
if(a->startItem()->agentName == agentNames[agent])
agentMessageCount[agent]++;*/
}
if (a->startItem() == messages[i]) {
if (firstInputLayer == -1 ||
firstInputLayer > a->endItem()->layer)
firstInputLayer = a->endItem()->layer;
/*for(int agent = 0; agent < agentNames.count(); agent++)
if(a->endItem()->agentName == agentNames[agent]) agentMessageCount[agent]++;*/
}
}
/*qDebug() << messages[i]->getName();
for(int j = 0; j < agentMessageCount.size(); j++) qDebug() << "\t" << agentNames[j] << agentMessageCount[j];*/
int messageLayer;
if (lastOutputLayer != -1) messageLayer = lastOutputLayer+1;
else
if (firstInputLayer != -1) messageLayer = firstInputLayer-1;
else
messageLayer = 0;
messages[i]->setPos(messageWidth[messageLayer]+10.0+
(messages[i]->width()/2.0), 20.0 +
((messageLayer)*layerHeight));
messageWidth[messageLayer] += 10.0+messages[i]->width();
// statesLayer[messageLayer].append(messages[i]);
if (messageWidth[messageLayer] > rollingWidth)
rollingWidth = messageWidth[messageLayer];
}
// }
setSceneRect(0, 0, rollingWidth, 20.0+(globalHighestLayer*layerHeight));
/* Update line positions with respect to state positions */
for (int i = 0; i < items().size(); i++) {
QGraphicsItem * qitem = items().at(i);
if (qgraphicsitem_cast<Arrow *>(qitem)) {
Arrow * sitem = qgraphicsitem_cast<Arrow *>(qitem);
sitem->updatePosition();
}
}
update();
}
void MachineScene::addMessageCommunication(GraphicsItem *t, MessageComm * m,
bool isInput) {
// Find the associated message state item if not make one
GraphicsItem * message = 0;
for (int j = 0; j < messages.size(); j++) {
GraphicsItem * sitem1 = messages.at(j);
if (sitem1->mytype == 2 && sitem1->getName() == m->messageType)
message = sitem1;
}
if (message == 0) {
message = new GraphicsItem;
message->setMessage(m);
addItem(message);
messages.append(message);
num_messages++;
int shift = 40;
if (isInput) shift *= -1;
message->setPos(t->x(), t->y()+shift);
}
Q_ASSERT(message != 0);
Arrow * arrow;
if (isInput) arrow = new Arrow(message, t);
else
arrow = new Arrow(t, message);
arrow->isCommunication = true;
message->addMessageArrow(arrow);
t->addMessageArrow(arrow);
addArrow(arrow);
}
void MachineScene::addTransitionTransition(QString agentName,
Transition * t, int isForeign) {
GraphicsItem * func = addTransitionString(agentName, t, isForeign);
if (!isForeign) {
Q_ASSERT(func != 0);
// For all input messages
for (int i = 0; i < t->input().messageModel->messages.count(); i++) {
addMessageCommunication(func,
&(t->input().messageModel->messages[i]), true);
}
for (int i = 0; i < t->output().messageModel->messages.count(); i++) {
addMessageCommunication(func,
&(t->output().messageModel->messages[i]), false);
}
}
}
GraphicsItem * MachineScene::addTransitionString(QString agentName,
Transition * t, int flag) {
QString csn = t->currentState()->name();
QString n = t->name();
QString nsn = t->nextState()->name();
GraphicsItem * cs = 0;
GraphicsItem * ns = 0;
GraphicsItem * func = 0;
Arrow * arrow = 0;
// add agent name to list
if (!agentNames.contains(agentName)) agentNames.append(agentName);
for (int j = 0; j < statesAndTransitions.size(); j++) {
GraphicsItem * sitem1 = statesAndTransitions.at(j);
if (sitem1->agentName == agentName) {
if (sitem1->mytype == 0) {
if (sitem1->getName() == csn) cs = sitem1;
if (sitem1->getName() == nsn) ns = sitem1;
} else {
if (sitem1->mytype == 1 && sitem1->getName() == n &&
sitem1->preState == csn && sitem1->postState == nsn)
func = sitem1;
}
}
}
if (cs == 0) {
GraphicsItem *state = new GraphicsItem;
state->setState(t->currentState());
state->agentName = agentName;
cs = state;
addState(state);
if (flag == 1) state->foreign = true;
}
if (ns == 0) {
GraphicsItem *state = new GraphicsItem;
state->setState(t->nextState());
state->agentName = agentName;
ns = state;
addState(state);
if (flag == 1) state->foreign = true;
}
if (func == 0) {
func = new GraphicsItem;
func->setTransition(t);
func->agentName = agentName;
if (flag == 1) func->foreign = true;
addTransition(func);
arrow = new Arrow(cs, func);
cs->addTransitionArrow(arrow);
func->addTransitionArrow(arrow);
if (flag == 1) arrow->foreign = true;
arrow->drawHead(false);
addArrow(arrow);
arrow = new Arrow(func, ns);
func->addTransitionArrow(arrow);
ns->addTransitionArrow(arrow);
if (flag == 1) arrow->foreign = true;
addArrow(arrow);
}
return func;
}
void MachineScene::addState(GraphicsItem * s) {
addItem(s);
statesAndTransitions.append(s);
num_states++;
}
void MachineScene::addTransition(GraphicsItem * t) {
addItem(t);
statesAndTransitions.append(t);
num_transitions++;
}
void MachineScene::addArrow(Arrow * t) {
addItem(t);
t->setZValue(-1.0);
}
void MachineScene::updateStateName(State *s) {
for (int i = 0; i < statesAndTransitions.size(); i++) {
GraphicsItem * sitem1 = statesAndTransitions.at(i);
if (sitem1->state() == s) {
sitem1->nameChanged();
}
}
this->update();
}
void MachineScene::updateTransitionName(Transition * t) {
for (int i = 0; i < statesAndTransitions.size(); i++) {
GraphicsItem * sitem1 = statesAndTransitions.at(i);
if (sitem1->transition == t) {
sitem1->nameChanged();
}
}
this->update();
}
void MachineScene::updateInput(Transition *t) {
// Find the graphics item that corresponds to the transition
for (int i = 0; i < statesAndTransitions.size(); i++) {
GraphicsItem * transitionItem = statesAndTransitions.at(i);
if (transitionItem->transition == t) {
// Add missing arrows
// For each transition input message
for (int k = 0; k < t->input().messageModel->messages.count();
k++) {
MessageComm * message = &(t->input().messageModel->
messages[k]);
// Look to see if it already exists
bool isFound = false;
for (int j = 0; j < transitionItem->getMessageArrows().size();
j++) {
GraphicsItem * messageItem =
transitionItem->getMessageArrows().at(j)->
startItem();
if (messageItem->mytype == 2 &&
messageItem->getName() == message->messageType)
isFound = true;
}
if (!isFound)
addMessageCommunication(transitionItem, message, true);
}
// Remove redundant arrows
QList<Arrow*> arrowsToDelete;
for (int j = 0; j < transitionItem->getMessageArrows().size();
j++) {
Arrow * arrow = transitionItem->getMessageArrows()[j];
GraphicsItem * messageItem = arrow->startItem();
// If the arrow is an input arrow
// I.e. the startItem is a message GraphicsItem
if (messageItem->mytype == 2) {
bool isFound = false;
for (int k = 0; k < t->input().messageModel->
messages.count(); k++) {
MessageComm * message = &(t->input().messageModel->
messages[k]);
if (messageItem->getName() == message->messageType)
isFound = true;
}
if (!isFound) {
arrowsToDelete.append(arrow);
// remove arrow from message
messageItem->removeMessageArrow(arrow);
// Check to see if the message state item is redundant
if (messageItem->getMessageArrows().size() == 0) {
removeItem(messageItem);
messages.removeOne(messageItem);
delete messageItem;
}
}
}
}
// Delete arrows
for (int i = 0; i < arrowsToDelete.size(); i++) {
Arrow * arrow = arrowsToDelete[i];
// Remove arrow
transitionItem->removeMessageArrow(arrow);
removeItem(arrow);
delete arrow;
}
}
}
this->update();
}
void MachineScene::updateOutput(Transition *t) {
for (int i = 0; i < statesAndTransitions.size(); i++) {
GraphicsItem * transitionItem = statesAndTransitions.at(i);
if (transitionItem->transition == t) {
// Add missing arrows
// For each transition input message
for (int k = 0; k < t->output().messageModel->messages.count();
k++) {
MessageComm * message = &(t->output().messageModel->
messages[k]);
// Look to see if it already exists
bool isFound = false;
for (int j = 0; j < transitionItem->getMessageArrows().size();
j++) {
GraphicsItem * messageItem =
transitionItem->getMessageArrows().at(j)
->endItem();
if (messageItem->mytype == 2 &&
messageItem->getName() == message->messageType)
isFound = true;
}
if (!isFound)
addMessageCommunication(transitionItem, message, false);
}
// Remove redundant arrows
QList<Arrow*> arrowsToDelete;
for (int j = 0; j < transitionItem->
getMessageArrows().size(); j++) {
Arrow * arrow = transitionItem->getMessageArrows()[j];
GraphicsItem * messageItem = arrow->endItem();
// If the arrow is an input arrow
// I.e. the startItem is a message GraphicsItem
if (messageItem->mytype == 2) {
bool isFound = false;
for (int k = 0; k < t->output().messageModel->
messages.count(); k++) {
MessageComm * message = &(t->output().messageModel->
messages[k]);
if (messageItem->getName() == message->messageType)
isFound = true;
}
if (!isFound) {
arrowsToDelete.append(arrow);
// remove arrow from message
messageItem->removeMessageArrow(arrow);
// Check to see if the message state item is redundant
if (messageItem->getMessageArrows().size() == 0) {
removeItem(messageItem);
messages.removeOne(messageItem);
delete messageItem;
}
}
}
}
// Delete arrows
for (int i = 0; i < arrowsToDelete.size(); i++) {
Arrow * arrow = arrowsToDelete[i];
// Remove arrow
transitionItem->removeMessageArrow(arrow);
removeItem(arrow);