/* Copyright (c) 2010, Carl Burch. License information is located in the
* com.cburch.logisim.Main source code and at www.cburch.com/logisim/. */
package com.cburch.logisim.circuit;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import com.cburch.logisim.data.Bounds;
import com.cburch.logisim.gui.main.Canvas;
import com.cburch.logisim.instance.InstancePainter;
import com.cburch.logisim.instance.InstancePoker;
import com.cburch.logisim.instance.InstanceState;
public class SubcircuitPoker extends InstancePoker {
private static final Color MAGNIFYING_INTERIOR = new Color(200, 200, 255, 64);
private static final Color MAGNIFYING_INTERIOR_DOWN = new Color(128, 128, 255, 192);
private boolean mouseDown;
@Override
public Bounds getBounds(InstancePainter painter) {
Bounds bds = painter.getInstance().getBounds();
int cx = bds.getX() + bds.getWidth() / 2;
int cy = bds.getY() + bds.getHeight() / 2;
return Bounds.create(cx - 5, cy - 5, 15, 15);
}
@Override
public void paint(InstancePainter painter) {
if (painter.getDestination() instanceof Canvas
&& painter.getData() instanceof CircuitState) {
Bounds bds = painter.getInstance().getBounds();
int cx = bds.getX() + bds.getWidth() / 2;
int cy = bds.getY() + bds.getHeight() / 2;
int tx = cx + 3;
int ty = cy + 3;
int[] xp = { tx - 1, cx + 8, cx + 10, tx + 1 };
int[] yp = { ty + 1, cy + 10, cy + 8, ty - 1 };
Graphics g = painter.getGraphics();
if (mouseDown) {
g.setColor(MAGNIFYING_INTERIOR_DOWN);
} else {
g.setColor(MAGNIFYING_INTERIOR);
}
g.fillOval(cx - 5, cy - 5, 10, 10);
g.setColor(Color.BLACK);
g.drawOval(cx - 5, cy - 5, 10, 10);
g.fillPolygon(xp, yp, xp.length);
}
}
@Override
public void mousePressed(InstanceState state, MouseEvent e) {
if (isWithin(state, e)) {
mouseDown = true;
state.getInstance().fireInvalidated();
}
}
@Override
public void mouseReleased(InstanceState state, MouseEvent e) {
if (mouseDown) {
mouseDown = false;
Object sub = state.getData();
if (e.getClickCount() == 2 && isWithin(state, e)
&& sub instanceof CircuitState) {
state.getProject().setCircuitState((CircuitState) sub);
} else {
state.getInstance().fireInvalidated();
}
}
}
private boolean isWithin(InstanceState state, MouseEvent e) {
Bounds bds = state.getInstance().getBounds();
int cx = bds.getX() + bds.getWidth() / 2;
int cy = bds.getY() + bds.getHeight() / 2;
int dx = e.getX() - cx;
int dy = e.getY() - cy;
return dx * dx + dy * dy <= 60;
}
}