private void handleMoveDrag(Canvas canvas, int dx, int dy, int modsEx) {
boolean connect = shouldConnect(canvas, modsEx);
drawConnections = connect;
if (connect) {
MoveGesture gesture = moveGesture;
if (gesture == null) {
gesture =
new MoveGesture(
new MoveRequestHandler(canvas),
canvas.getCircuit(),
canvas.getSelection().getAnchoredComponents());
moveGesture = gesture;
}
if (dx != 0 || dy != 0) {
boolean queued = gesture.enqueueRequest(dx, dy);
if (queued) {
canvas.setErrorMessage(new ComputingMessage(dx, dy), COLOR_COMPUTING);
// maybe CPU scheduled led the request to be satisfied
// just before the "if(queued)" statement. In any case, it
// doesn't hurt to check to ensure the message belongs.
if (gesture.findResult(dx, dy) != null) {
clearCanvasMessage(canvas, dx, dy);
}
}
}
}
canvas.repaint();
}
@Override
public Set<Component> getHiddenComponents(Canvas canvas) {
if (state == MOVING) {
int dx = curDx;
int dy = curDy;
if (dx == 0 && dy == 0) {
return null;
}
Set<Component> sel = canvas.getSelection().getComponents();
MoveGesture gesture = moveGesture;
if (gesture != null && drawConnections) {
MoveResult result = gesture.findResult(dx, dy);
if (result != null) {
HashSet<Component> ret = new HashSet<Component>(sel);
ret.addAll(result.getReplacementMap().getRemovals());
return ret;
}
}
return sel;
} else {
return null;
}
}
@Override
public void draw(Canvas canvas, ComponentDrawContext context) {
Project proj = canvas.getProject();
int dx = curDx;
int dy = curDy;
if (state == MOVING) {
proj.getSelection().drawGhostsShifted(context, dx, dy);
MoveGesture gesture = moveGesture;
if (gesture != null && drawConnections && (dx != 0 || dy != 0)) {
MoveResult result = gesture.findResult(dx, dy);
if (result != null) {
Collection<Wire> wiresToAdd = result.getWiresToAdd();
Graphics g = context.getGraphics();
GraphicsUtil.switchToWidth(g, 3);
g.setColor(Color.GRAY);
for (Wire w : wiresToAdd) {
Location loc0 = w.getEnd0();
Location loc1 = w.getEnd1();
g.drawLine(loc0.getX(), loc0.getY(), loc1.getX(), loc1.getY());
}
GraphicsUtil.switchToWidth(g, 1);
g.setColor(COLOR_UNMATCHED);
for (Location conn : result.getUnconnectedLocations()) {
int connX = conn.getX();
int connY = conn.getY();
g.fillOval(connX - 3, connY - 3, 6, 6);
g.fillOval(connX + dx - 3, connY + dy - 3, 6, 6);
}
}
}
} else if (state == RECT_SELECT) {
int left = start.getX();
int right = left + dx;
if (left > right) {
int i = left;
left = right;
right = i;
}
int top = start.getY();
int bot = top + dy;
if (top > bot) {
int i = top;
top = bot;
bot = i;
}
Graphics gBase = context.getGraphics();
int w = right - left - 1;
int h = bot - top - 1;
if (w > 2 && h > 2) {
gBase.setColor(BACKGROUND_RECT_SELECT);
gBase.fillRect(left + 1, top + 1, w - 1, h - 1);
}
Circuit circ = canvas.getCircuit();
Bounds bds = Bounds.create(left, top, right - left, bot - top);
for (Component c : circ.getAllWithin(bds)) {
Location cloc = c.getLocation();
Graphics gDup = gBase.create();
context.setGraphics(gDup);
c.getFactory()
.drawGhost(context, COLOR_RECT_SELECT, cloc.getX(), cloc.getY(), c.getAttributeSet());
gDup.dispose();
}
gBase.setColor(COLOR_RECT_SELECT);
GraphicsUtil.switchToWidth(gBase, 2);
if (w < 0) w = 0;
if (h < 0) h = 0;
gBase.drawRect(left, top, w, h);
}
}