public void draw(ComponentDrawContext context) {
CircuitState state = context.getCircuitState();
Graphics g = context.getGraphics();
GraphicsUtil.switchToWidth(g, WIDTH);
g.setColor(state.getValue(e0).getColor());
g.drawLine(e0.getX(), e0.getY(), e1.getX(), e1.getY());
}
private void computeLabel(Instance instance) {
GateAttributes attrs = (GateAttributes) instance.getAttributeSet();
Direction facing = attrs.facing;
int baseWidth = ((Integer) attrs.size.getValue()).intValue();
int axis = baseWidth / 2 + (negateOutput ? 10 : 0);
int perp = 0;
if (AppPreferences.GATE_SHAPE.get().equals(AppPreferences.SHAPE_RECTANGULAR)) {
perp += 6;
}
Location loc = instance.getLocation();
int cx;
int cy;
if (facing == Direction.NORTH) {
cx = loc.getX() + perp;
cy = loc.getY() + axis;
} else if (facing == Direction.SOUTH) {
cx = loc.getX() - perp;
cy = loc.getY() - axis;
} else if (facing == Direction.WEST) {
cx = loc.getX() + axis;
cy = loc.getY() - perp;
} else {
cx = loc.getX() - axis;
cy = loc.getY() + perp;
}
instance.setTextField(
StdAttr.LABEL, StdAttr.LABEL_FONT, cx, cy, TextField.H_CENTER, TextField.V_CENTER);
}
@Override
public void draw(Canvas canvas, Graphics g) {
if (active) {
Location start = mouseStart;
Location end = mouseEnd;
g.setColor(Color.GRAY);
g.drawLine(start.getX(), start.getY(), end.getX(), end.getY());
}
}
public boolean contains(Location q) {
int qx = q.getX();
int qy = q.getY();
if (is_x_equal) {
int wx = e0.getX();
return qx >= wx - 2 && qx <= wx + 2 && e0.getY() <= qy && qy <= e1.getY();
} else {
int wy = e0.getY();
return qy >= wy - 2 && qy <= wy + 2 && e0.getX() <= qx && qx <= e1.getX();
}
}
private Handle[] getHandleArray(HandleGesture gesture) {
if (gesture == null) {
return new Handle[] { new Handle(this, p0), new Handle(this, p1),
new Handle(this, p2) };
} else {
Handle g = gesture.getHandle();
int gx = g.getX() + gesture.getDeltaX();
int gy = g.getY() + gesture.getDeltaY();
Handle[] ret = { new Handle(this, p0), new Handle(this, p1),
new Handle(this, p2) };
if (g.isAt(p0)) {
if (gesture.isShiftDown()) {
Location p = LineUtil.snapTo8Cardinals(p2, gx, gy);
ret[0] = new Handle(this, p);
} else {
ret[0] = new Handle(this, gx, gy);
}
} else if (g.isAt(p2)) {
if (gesture.isShiftDown()) {
Location p = LineUtil.snapTo8Cardinals(p0, gx, gy);
ret[2] = new Handle(this, p);
} else {
ret[2] = new Handle(this, gx, gy);
}
} else if (g.isAt(p1)) {
if (gesture.isShiftDown()) {
double x0 = p0.getX();
double y0 = p0.getY();
double x1 = p2.getX();
double y1 = p2.getY();
double midx = (x0 + x1) / 2;
double midy = (y0 + y1) / 2;
double dx = x1 - x0;
double dy = y1 - y0;
double[] p = LineUtil.nearestPointInfinite(gx, gy,
midx, midy, midx - dy, midy + dx);
gx = (int) Math.round(p[0]);
gy = (int) Math.round(p[1]);
}
if (gesture.isAltDown()) {
double[] e0 = { p0.getX(), p0.getY() };
double[] e1 = { p2.getX(), p2.getY() };
double[] mid = { gx, gy };
double[] ct = CurveUtil.interpolate(e0, e1, mid);
gx = (int) Math.round(ct[0]);
gy = (int) Math.round(ct[1]);
}
ret[1] = new Handle(this, gx, gy);
}
return ret;
}
}
private void drawInstance(InstancePainter painter, boolean isGhost) {
Graphics2D g = (Graphics2D) painter.getGraphics().create();
Location loc = painter.getLocation();
g.translate(loc.getX(), loc.getY());
Direction from = painter.getAttributeValue(StdAttr.FACING);
int degrees = Direction.EAST.toDegrees() - from.toDegrees();
double radians = Math.toRadians((degrees + 360) % 360);
g.rotate(radians);
GraphicsUtil.switchToWidth(g, Wire.WIDTH);
if (!isGhost && painter.getShowState()) {
g.setColor(painter.getPort(0).getColor());
}
g.drawLine(0, 0, 5, 0);
GraphicsUtil.switchToWidth(g, 1);
if (!isGhost && painter.shouldDrawColor()) {
BitWidth width = painter.getAttributeValue(StdAttr.WIDTH);
g.setColor(Value.repeat(Value.FALSE, width.getWidth()).getColor());
}
g.drawLine(6, -8, 6, 8);
g.drawLine(9, -5, 9, 5);
g.drawLine(12, -2, 12, 2);
g.dispose();
}
private void paintBase(InstancePainter painter) {
Graphics g = painter.getGraphics();
Direction facing = painter.getAttributeValue(StdAttr.FACING);
Location loc = painter.getLocation();
int x = loc.getX();
int y = loc.getY();
g.translate(x, y);
double rotate = 0.0;
if (facing != null && facing != Direction.EAST && g instanceof Graphics2D) {
rotate = -facing.toRadians();
((Graphics2D) g).rotate(rotate);
}
Object shape = painter.getGateShape();
if (shape == AppPreferences.SHAPE_RECTANGULAR) {
paintRectangularBase(g, painter);
} else if (shape == AppPreferences.SHAPE_DIN40700) {
int width = painter.getAttributeValue(ATTR_SIZE) == SIZE_NARROW ? 20 : 30;
PainterDin.paintAnd(painter, width, 18, true);
} else {
PainterShaped.paintNot(painter);
}
if (rotate != 0.0) {
((Graphics2D) g).rotate(-rotate);
}
g.translate(-x, -y);
}
private void updateMouse(Canvas canvas, int mx, int my, int mods) {
if (active) {
boolean shift = (mods & MouseEvent.SHIFT_DOWN_MASK) != 0;
Location newEnd;
if (shift) {
newEnd = LineUtil.snapTo8Cardinals(mouseStart, mx, my);
} else {
newEnd = Location.create(mx, my);
}
if ((mods & InputEvent.CTRL_DOWN_MASK) != 0) {
int x = newEnd.getX();
int y = newEnd.getY();
x = canvas.snapX(x);
y = canvas.snapY(y);
newEnd = Location.create(x, y);
}
if (!newEnd.equals(mouseEnd)) {
mouseEnd = newEnd;
repaintArea(canvas);
}
}
lastMouseX = mx;
lastMouseY = my;
}
public Bounds getOffsetBounds() {
InstanceComponent c = comp;
if (c == null) {
return factory.getOffsetBounds(attrs);
} else {
Location loc = c.getLocation();
return c.getBounds().translate(-loc.getX(), -loc.getY());
}
}
@Override
public void mouseReleased(Canvas canvas, Graphics g, MouseEvent e) {
Project proj = canvas.getProject();
if (state == MOVING) {
setState(proj, IDLE);
computeDxDy(proj, e, g);
int dx = curDx;
int dy = curDy;
if (dx != 0 || dy != 0) {
if (!proj.getLogisimFile().contains(canvas.getCircuit())) {
canvas.setErrorMessage(Strings.getter("cannotModifyError"));
} else if (proj.getSelection().hasConflictWhenMoved(dx, dy)) {
canvas.setErrorMessage(Strings.getter("exclusiveError"));
} else {
boolean connect = shouldConnect(canvas, e.getModifiersEx());
drawConnections = false;
ReplacementMap repl;
if (connect) {
MoveGesture gesture = moveGesture;
if (gesture == null) {
gesture =
new MoveGesture(
new MoveRequestHandler(canvas),
canvas.getCircuit(),
canvas.getSelection().getAnchoredComponents());
}
canvas.setErrorMessage(new ComputingMessage(dx, dy), COLOR_COMPUTING);
MoveResult result = gesture.forceRequest(dx, dy);
clearCanvasMessage(canvas, dx, dy);
repl = result.getReplacementMap();
} else {
repl = null;
}
Selection sel = proj.getSelection();
proj.doAction(SelectionActions.translate(sel, dx, dy, repl));
}
}
moveGesture = null;
proj.repaintCanvas();
} else if (state == RECT_SELECT) {
Bounds bds = Bounds.create(start).add(start.getX() + curDx, start.getY() + curDy);
Circuit circuit = canvas.getCircuit();
Selection sel = proj.getSelection();
Collection<Component> in_sel = sel.getComponentsWithin(bds, g);
for (Component comp : circuit.getAllWithin(bds, g)) {
if (!in_sel.contains(comp)) sel.add(comp);
}
Action act = SelectionActions.drop(sel, in_sel);
if (act != null) {
proj.doAction(act);
}
setState(proj, IDLE);
proj.repaintCanvas();
}
}
private Wire(Location e0, Location e1) {
this.is_x_equal = e0.getX() == e1.getX();
if (is_x_equal) {
if (e0.getY() > e1.getY()) {
this.e0 = e1;
this.e1 = e0;
} else {
this.e0 = e0;
this.e1 = e1;
}
} else {
if (e0.getX() > e1.getX()) {
this.e0 = e1;
this.e1 = e0;
} else {
this.e0 = e0;
this.e1 = e1;
}
}
}
private void computeDxDy(Project proj, MouseEvent e, Graphics g) {
Bounds bds = proj.getSelection().getBounds(g);
int dx;
int dy;
if (bds == Bounds.EMPTY_BOUNDS) {
dx = e.getX() - start.getX();
dy = e.getY() - start.getY();
} else {
dx = Math.max(e.getX() - start.getX(), -bds.getX());
dy = Math.max(e.getY() - start.getY(), -bds.getY());
}
Selection sel = proj.getSelection();
if (sel.shouldSnap()) {
dx = Canvas.snapXToGrid(dx);
dy = Canvas.snapYToGrid(dy);
}
curDx = dx;
curDy = dy;
}
private void configurePorts(Instance instance) {
Object size = instance.getAttributeValue(ATTR_SIZE);
Direction facing = instance.getAttributeValue(StdAttr.FACING);
int dx = size == SIZE_NARROW ? -20 : -30;
Port[] ports = new Port[2];
ports[0] = new Port(0, 0, Port.OUTPUT, StdAttr.WIDTH);
Location out = Location.create(0, 0).translate(facing, dx);
ports[1] = new Port(out.getX(), out.getY(), Port.INPUT, StdAttr.WIDTH);
instance.setPorts(ports);
}
static Location snapTo4Cardinals(Location from, int mx, int my) {
int px = from.getX();
int py = from.getY();
if (mx != px && my != py) {
if (Math.abs(my - py) < Math.abs(mx - px)) {
return Location.create(mx, py);
} else {
return Location.create(px, my);
}
}
return Location.create(mx, my); // should never happen
}
void computePorts(Instance instance) {
GateAttributes attrs = (GateAttributes) instance.getAttributeSet();
int inputs = attrs.inputs;
Port[] ports = new Port[inputs + 1];
ports[0] = new Port(0, 0, Port.OUTPUT, StdAttr.WIDTH);
for (int i = 0; i < inputs; i++) {
Location offs = getInputOffset(attrs, i);
ports[i + 1] = new Port(offs.getX(), offs.getY(), Port.INPUT, StdAttr.WIDTH);
}
instance.setPorts(ports);
}
@Override
public void paintInstance(InstancePainter painter) {
Location loc = painter.getLocation();
int x = loc.getX();
int y = loc.getY();
Graphics g = painter.getGraphics();
g.translate(x, y);
Value pull = getPullValue(painter.getAttributeSet());
Value actual = painter.getPort(0);
paintBase(painter, pull, pull.getColor(), actual.getColor());
g.translate(-x, -y);
painter.drawPorts();
}
@Override
public void mouseDragged(Canvas canvas, Graphics g, MouseEvent e) {
if (state == MOVING) {
Project proj = canvas.getProject();
computeDxDy(proj, e, g);
handleMoveDrag(canvas, curDx, curDy, e.getModifiersEx());
} else if (state == RECT_SELECT) {
Project proj = canvas.getProject();
curDx = e.getX() - start.getX();
curDy = e.getY() - start.getY();
proj.repaintCanvas();
}
}
@Override
public boolean contains(Location loc, AttributeSet attrsBase) {
GateAttributes attrs = (GateAttributes) attrsBase;
if (super.contains(loc, attrs)) {
if (attrs.negated == 0) {
return true;
} else {
Direction facing = attrs.facing;
Bounds bds = getOffsetBounds(attrsBase);
int delt;
if (facing == Direction.NORTH) {
delt = loc.getY() - (bds.getY() + bds.getHeight());
} else if (facing == Direction.SOUTH) {
delt = loc.getY() - bds.getY();
} else if (facing == Direction.WEST) {
delt = loc.getX() - (bds.getX() + bds.getHeight());
} else {
delt = loc.getX() - bds.getX();
}
if (Math.abs(delt) > 5) {
return true;
} else {
int inputs = attrs.inputs;
for (int i = 1; i <= inputs; i++) {
Location offs = getInputOffset(attrs, i);
if (loc.manhattanDistanceTo(offs) <= 5) {
return true;
}
}
return false;
}
}
} else {
return false;
}
}
@Override
public void mousePressed(Canvas canvas, MouseEvent e) {
int x = e.getX();
int y = e.getY();
int mods = e.getModifiersEx();
if ((mods & InputEvent.CTRL_DOWN_MASK) != 0) {
x = canvas.snapX(x);
y = canvas.snapY(y);
}
Location loc = Location.create(x, y);
mouseStart = loc;
mouseEnd = loc;
lastMouseX = loc.getX();
lastMouseY = loc.getY();
active = canvas.getModel() != null;
repaintArea(canvas);
}
static void configureLabel(Instance instance, boolean isRectangular, Location control) {
Object facing = instance.getAttributeValue(StdAttr.FACING);
Bounds bds = instance.getBounds();
int x;
int y;
int halign;
if (facing == Direction.NORTH || facing == Direction.SOUTH) {
x = bds.getX() + bds.getWidth() / 2 + 2;
y = bds.getY() - 2;
halign = TextField.H_LEFT;
} else { // west or east
y = isRectangular ? bds.getY() - 2 : bds.getY();
if (control != null && control.getY() == bds.getY()) {
// the control line will get in the way
x = control.getX() + 2;
halign = TextField.H_LEFT;
} else {
x = bds.getX() + bds.getWidth() / 2;
halign = TextField.H_CENTER;
}
}
instance.setTextField(StdAttr.LABEL, StdAttr.LABEL_FONT, x, y, halign, TextField.V_BASELINE);
}
@Override
public boolean contains(Location loc, boolean assumeFilled) {
Object type = getPaintType();
if (assumeFilled && type == DrawAttr.PAINT_STROKE) {
type = DrawAttr.PAINT_STROKE_FILL;
}
if (type != DrawAttr.PAINT_FILL) {
int stroke = getStrokeWidth();
double[] q = toArray(loc);
double[] p0 = toArray(this.p0);
double[] p1 = toArray(this.p1);
double[] p2 = toArray(this.p2);
double[] p = CurveUtil.findNearestPoint(q, p0, p1, p2);
if (p == null) {
return false;
}
int thr;
if (type == DrawAttr.PAINT_STROKE) {
thr = Math.max(Line.ON_LINE_THRESH, stroke / 2);
} else {
thr = stroke / 2;
}
if (LineUtil.distanceSquared(p[0], p[1], q[0], q[1]) < thr * thr) {
return true;
}
}
if (type != DrawAttr.PAINT_STROKE) {
QuadCurve2D curve = getCurve(null);
if (curve.contains(loc.getX(), loc.getY())) {
return true;
}
}
return false;
}
private static double[] toArray(Location loc) {
return new double[] { loc.getX(), loc.getY() };
}
public Handle(CanvasObject object, Location loc) {
this(object, loc.getX(), loc.getY());
}
public boolean isAt(Location loc) {
return x == loc.getX() && y == loc.getY();
}
public int getLength() {
return (e1.getY() - e0.getY()) + (e1.getX() - e0.getX());
}
private void paintBase(InstancePainter painter) {
GateAttributes attrs = (GateAttributes) painter.getAttributeSet();
Direction facing = attrs.facing;
int inputs = attrs.inputs;
int negated = attrs.negated;
Object shape = painter.getGateShape();
Location loc = painter.getLocation();
Bounds bds = painter.getOffsetBounds();
int width = bds.getWidth();
int height = bds.getHeight();
if (facing == Direction.NORTH || facing == Direction.SOUTH) {
int t = width;
width = height;
height = t;
}
if (negated != 0) {
width -= 10;
}
Graphics g = painter.getGraphics();
Color baseColor = g.getColor();
if (shape == AppPreferences.SHAPE_SHAPED && paintInputLines) {
PainterShaped.paintInputLines(painter, this);
} else if (negated != 0) {
for (int i = 0; i < inputs; i++) {
int negatedBit = (negated >> i) & 1;
if (negatedBit == 1) {
Location in = getInputOffset(attrs, i);
Location cen = in.translate(facing, 5);
painter.drawDongle(loc.getX() + cen.getX(), loc.getY() + cen.getY());
}
}
}
g.setColor(baseColor);
g.translate(loc.getX(), loc.getY());
double rotate = 0.0;
if (facing != Direction.EAST && g instanceof Graphics2D) {
rotate = -facing.toRadians();
Graphics2D g2 = (Graphics2D) g;
g2.rotate(rotate);
}
if (shape == AppPreferences.SHAPE_RECTANGULAR) {
paintRectangular(painter, width, height);
} else if (shape == AppPreferences.SHAPE_DIN40700) {
paintDinShape(painter, width, height, inputs);
// SHAPE_SHAPED
} else {
if (negateOutput) {
g.translate(-10, 0);
paintShape(painter, width - 10, height);
painter.drawDongle(5, 0);
g.translate(10, 0);
} else {
paintShape(painter, width, height);
}
}
if (rotate != 0.0) {
((Graphics2D) g).rotate(-rotate);
}
g.translate(-loc.getX(), -loc.getY());
painter.drawLabel();
}
@Override
public void mousePressed(Canvas canvas, Graphics g, MouseEvent e) {
Project proj = canvas.getProject();
Circuit circ = canvas.getCircuit();
if (!proj.getLogisimFile().contains(circ)) {
if (caret != null) caret.cancelEditing();
canvas.setErrorMessage(Strings.getter("cannotModifyError"));
return;
}
// Maybe user is clicking within the current caret.
if (caret != null) {
if (caret.getBounds(g).contains(e.getX(), e.getY())) { // Yes
caret.mousePressed(e);
proj.repaintCanvas();
return;
} else { // No. End the current caret.
caret.stopEditing();
}
}
// caret will be null at this point
// Otherwise search for a new caret.
int x = e.getX();
int y = e.getY();
Location loc = Location.create(x, y);
ComponentUserEvent event = new ComponentUserEvent(canvas, x, y);
// First search in selection.
for (Component comp : proj.getSelection().getComponentsContaining(loc, g)) {
TextEditable editable = (TextEditable) comp.getFeature(TextEditable.class);
if (editable != null) {
caret = editable.getTextCaret(event);
if (caret != null) {
proj.getFrame().viewComponentAttributes(circ, comp);
caretComponent = comp;
caretCreatingText = false;
break;
}
}
}
// Then search in circuit
if (caret == null) {
for (Component comp : circ.getAllContaining(loc, g)) {
TextEditable editable = (TextEditable) comp.getFeature(TextEditable.class);
if (editable != null) {
caret = editable.getTextCaret(event);
if (caret != null) {
proj.getFrame().viewComponentAttributes(circ, comp);
caretComponent = comp;
caretCreatingText = false;
break;
}
}
}
}
// if nothing found, create a new label
if (caret == null) {
if (loc.getX() < 0 || loc.getY() < 0) return;
AttributeSet copy = (AttributeSet) attrs.clone();
caretComponent = Text.FACTORY.createComponent(loc, copy);
caretCreatingText = true;
TextEditable editable = (TextEditable) caretComponent.getFeature(TextEditable.class);
if (editable != null) {
caret = editable.getTextCaret(event);
proj.getFrame().viewComponentAttributes(circ, caretComponent);
}
}
if (caret != null) {
caretCanvas = canvas;
caretCircuit = canvas.getCircuit();
caret.addCaretListener(listener);
caretCircuit.addCircuitListener(listener);
}
proj.repaintCanvas();
}
private boolean overlaps(Location q0, Location q1, boolean includeEnds) {
if (is_x_equal) {
int x0 = q0.getX();
if (x0 != q1.getX() || x0 != e0.getX()) return false;
if (includeEnds) {
return e1.getY() >= q0.getY() && e0.getY() <= q1.getY();
} else {
return e1.getY() > q0.getY() && e0.getY() < q1.getY();
}
} else {
int y0 = q0.getY();
if (y0 != q1.getY() || y0 != e0.getY()) return false;
if (includeEnds) {
return e1.getX() >= q0.getX() && e0.getX() <= q1.getX();
} else {
return e1.getX() > q0.getX() && e0.getX() < q1.getX();
}
}
}
public QuadCurve2D getCurve2D() {
return new QuadCurve2D.Double(p0.getX(), p0.getY(),
p1.getX(), p1.getY(), p2.getX(), p2.getY());
}
@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);
}
}