/* 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.std.memory;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import com.cburch.logisim.data.Bounds;
import com.cburch.logisim.instance.InstancePainter;
import com.cburch.logisim.instance.InstancePoker;
import com.cburch.logisim.instance.InstanceState;
import com.cburch.logisim.proj.Project;
public class MemPoker extends InstancePoker {
private MemPoker sub;
@Override
public boolean init(InstanceState state, MouseEvent event) {
Bounds bds = state.getInstance().getBounds();
MemState data = (MemState) state.getData();
long addr = data.getAddressAt(event.getX() - bds.getX(),
event.getY() - bds.getY());
// See if outside box
if (addr < 0) {
sub = new AddrPoker();
} else {
sub = new DataPoker(state, data, addr);
}
return true;
}
@Override
public Bounds getBounds(InstancePainter state) {
return sub.getBounds(state);
}
@Override
public void paint(InstancePainter painter) {
sub.paint(painter);
}
@Override
public void keyTyped(InstanceState state, KeyEvent e) {
sub.keyTyped(state, e);
}
private static class DataPoker extends MemPoker {
int initValue;
int curValue;
private DataPoker(InstanceState state, MemState data, long addr) {
data.setCursor(addr);
initValue = data.getContents().get(data.getCursor());
curValue = initValue;
Object attrs = state.getInstance().getAttributeSet();
if (attrs instanceof RomAttributes) {
Project proj = state.getProject();
if (proj != null) {
((RomAttributes) attrs).setProject(proj);
}
}
}
@Override
public Bounds getBounds(InstancePainter painter) {
MemState data = (MemState) painter.getData();
Bounds inBounds = painter.getInstance().getBounds();
return data.getBounds(data.getCursor(), inBounds);
}
@Override
public void paint(InstancePainter painter) {
Bounds bds = getBounds(painter);
Graphics g = painter.getGraphics();
g.setColor(Color.RED);
g.drawRect(bds.getX(), bds.getY(), bds.getWidth(), bds.getHeight());
g.setColor(Color.BLACK);
}
@Override
public void stopEditing(InstanceState state) {
MemState data = (MemState) state.getData();
data.setCursor(-1);
}
@Override
public void keyTyped(InstanceState state, KeyEvent e) {
char c = e.getKeyChar();
int val = Character.digit(e.getKeyChar(), 16);
MemState data = (MemState) state.getData();
if (val >= 0) {
curValue = curValue * 16 + val;
data.getContents().set(data.getCursor(), curValue);
state.fireInvalidated();
} else if (c == ' ' || c == '\t') {
moveTo(data, data.getCursor() + 1);
} else if (c == '\r' || c == '\n') {
moveTo(data, data.getCursor() + data.getColumns());
} else if (c == '\u0008' || c == '\u007f') {
moveTo(data, data.getCursor() - 1);
}
}
private void moveTo(MemState data, long addr) {
if (data.isValidAddr(addr)) {
data.setCursor(addr);
data.scrollToShow(addr);
initValue = data.getContents().get(addr);
curValue = initValue;
}
}
}
private static class AddrPoker extends MemPoker {
@Override
public Bounds getBounds(InstancePainter painter) {
MemState data = (MemState) painter.getData();
return data.getBounds(-1, painter.getBounds());
}
@Override
public void paint(InstancePainter painter) {
Bounds bds = getBounds(painter);
Graphics g = painter.getGraphics();
g.setColor(Color.RED);
g.drawRect(bds.getX(), bds.getY(), bds.getWidth(), bds.getHeight());
g.setColor(Color.BLACK);
}
@Override
public void keyTyped(InstanceState state, KeyEvent e) {
char c = e.getKeyChar();
int val = Character.digit(e.getKeyChar(), 16);
MemState data = (MemState) state.getData();
if (val >= 0) {
long newScroll = (data.getScroll() * 16 + val) & (data.getLastAddress());
data.setScroll(newScroll);
} else if (c == ' ') {
data.setScroll(data.getScroll() + (data.getRows() - 1) * data.getColumns());
} else if (c == '\r' || c == '\n') {
data.setScroll(data.getScroll() + data.getColumns());
} else if (c == '\u0008' || c == '\u007f') {
data.setScroll(data.getScroll() - data.getColumns());
}
}
}
}