public void paint(Graphics g) {
if (big == null) {
return;
}
big.setBackground(getBackground());
big.clearRect(0, 0, w, h);
float freeMemory = (float) r.freeMemory();
float totalMemory = (float) r.totalMemory();
// .. Draw allocated and used strings ..
big.setColor(GREEN);
big.drawString(
String.valueOf((int) totalMemory / 1024) + "K allocated", 4.0f, (float) ascent + 0.5f);
usedStr = String.valueOf(((int) (totalMemory - freeMemory)) / 1024) + "K used";
big.drawString(usedStr, 4, h - descent);
// Calculate remaining size
float ssH = ascent + descent;
float remainingHeight = (float) (h - (ssH * 2) - 0.5f);
float blockHeight = remainingHeight / 10;
float blockWidth = 20.0f;
float remainingWidth = (float) (w - blockWidth - 10);
// .. Memory Free ..
big.setColor(mfColor);
int MemUsage = (int) ((freeMemory / totalMemory) * 10);
int i = 0;
for (; i < MemUsage; i++) {
mfRect.setRect(5, (float) ssH + i * blockHeight, blockWidth, (float) blockHeight - 1);
big.fill(mfRect);
}
// .. Memory Used ..
big.setColor(GREEN);
for (; i < 10; i++) {
muRect.setRect(5, (float) ssH + i * blockHeight, blockWidth, (float) blockHeight - 1);
big.fill(muRect);
}
// .. Draw History Graph ..
big.setColor(graphColor);
int graphX = 30;
int graphY = (int) ssH;
int graphW = w - graphX - 5;
int graphH = (int) remainingHeight;
graphOutlineRect.setRect(graphX, graphY, graphW, graphH);
big.draw(graphOutlineRect);
int graphRow = graphH / 10;
// .. Draw row ..
for (int j = graphY; j <= graphH + graphY; j += graphRow) {
graphLine.setLine(graphX, j, graphX + graphW, j);
big.draw(graphLine);
}
// .. Draw animated column movement ..
int graphColumn = graphW / 15;
if (columnInc == 0) {
columnInc = graphColumn;
}
for (int j = graphX + columnInc; j < graphW + graphX; j += graphColumn) {
graphLine.setLine(j, graphY, j, graphY + graphH);
big.draw(graphLine);
}
--columnInc;
if (pts == null) {
pts = new int[graphW];
ptNum = 0;
} else if (pts.length != graphW) {
int tmp[] = null;
if (ptNum < graphW) {
tmp = new int[ptNum];
System.arraycopy(pts, 0, tmp, 0, tmp.length);
} else {
tmp = new int[graphW];
System.arraycopy(pts, pts.length - tmp.length, tmp, 0, tmp.length);
ptNum = tmp.length - 2;
}
pts = new int[graphW];
System.arraycopy(tmp, 0, pts, 0, tmp.length);
} else {
big.setColor(YELLOW);
pts[ptNum] = (int) (graphY + graphH * (freeMemory / totalMemory));
for (int j = graphX + graphW - ptNum, k = 0; k < ptNum; k++, j++) {
if (k != 0) {
if (pts[k] != pts[k - 1]) {
big.drawLine(j - 1, pts[k - 1], j, pts[k]);
} else {
big.fillRect(j, pts[k], 1, 1);
}
}
}
if (ptNum + 2 == pts.length) {
// throw out oldest point
for (int j = 1; j < ptNum; j++) {
pts[j - 1] = pts[j];
}
--ptNum;
} else {
ptNum++;
}
}
g.drawImage(bimg, 0, 0, this);
}
public class Surface extends JPanel implements Runnable {
public Thread thread;
public long sleepAmount = 1000;
private int w, h;
private BufferedImage bimg;
private Graphics2D big;
private Font font = new Font("Times New Roman", Font.PLAIN, 11);
private Runtime r = Runtime.getRuntime();
private int columnInc;
private int pts[];
private int ptNum;
private int ascent, descent;
private float freeMemory, totalMemory;
private Rectangle graphOutlineRect = new Rectangle();
private Rectangle2D mfRect = new Rectangle2D.Float();
private Rectangle2D muRect = new Rectangle2D.Float();
private Line2D graphLine = new Line2D.Float();
private Color graphColor = new Color(46, 139, 87);
private Color mfColor = new Color(0, 100, 0);
private String usedStr;
public Surface() {
setBackground(BLACK);
addMouseListener(
new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
if (thread == null) start();
else stop();
}
});
}
public Dimension getMinimumSize() {
return getPreferredSize();
}
public Dimension getMaximumSize() {
return getPreferredSize();
}
public Dimension getPreferredSize() {
return new Dimension(135, 80);
}
public void paint(Graphics g) {
if (big == null) {
return;
}
big.setBackground(getBackground());
big.clearRect(0, 0, w, h);
float freeMemory = (float) r.freeMemory();
float totalMemory = (float) r.totalMemory();
// .. Draw allocated and used strings ..
big.setColor(GREEN);
big.drawString(
String.valueOf((int) totalMemory / 1024) + "K allocated", 4.0f, (float) ascent + 0.5f);
usedStr = String.valueOf(((int) (totalMemory - freeMemory)) / 1024) + "K used";
big.drawString(usedStr, 4, h - descent);
// Calculate remaining size
float ssH = ascent + descent;
float remainingHeight = (float) (h - (ssH * 2) - 0.5f);
float blockHeight = remainingHeight / 10;
float blockWidth = 20.0f;
float remainingWidth = (float) (w - blockWidth - 10);
// .. Memory Free ..
big.setColor(mfColor);
int MemUsage = (int) ((freeMemory / totalMemory) * 10);
int i = 0;
for (; i < MemUsage; i++) {
mfRect.setRect(5, (float) ssH + i * blockHeight, blockWidth, (float) blockHeight - 1);
big.fill(mfRect);
}
// .. Memory Used ..
big.setColor(GREEN);
for (; i < 10; i++) {
muRect.setRect(5, (float) ssH + i * blockHeight, blockWidth, (float) blockHeight - 1);
big.fill(muRect);
}
// .. Draw History Graph ..
big.setColor(graphColor);
int graphX = 30;
int graphY = (int) ssH;
int graphW = w - graphX - 5;
int graphH = (int) remainingHeight;
graphOutlineRect.setRect(graphX, graphY, graphW, graphH);
big.draw(graphOutlineRect);
int graphRow = graphH / 10;
// .. Draw row ..
for (int j = graphY; j <= graphH + graphY; j += graphRow) {
graphLine.setLine(graphX, j, graphX + graphW, j);
big.draw(graphLine);
}
// .. Draw animated column movement ..
int graphColumn = graphW / 15;
if (columnInc == 0) {
columnInc = graphColumn;
}
for (int j = graphX + columnInc; j < graphW + graphX; j += graphColumn) {
graphLine.setLine(j, graphY, j, graphY + graphH);
big.draw(graphLine);
}
--columnInc;
if (pts == null) {
pts = new int[graphW];
ptNum = 0;
} else if (pts.length != graphW) {
int tmp[] = null;
if (ptNum < graphW) {
tmp = new int[ptNum];
System.arraycopy(pts, 0, tmp, 0, tmp.length);
} else {
tmp = new int[graphW];
System.arraycopy(pts, pts.length - tmp.length, tmp, 0, tmp.length);
ptNum = tmp.length - 2;
}
pts = new int[graphW];
System.arraycopy(tmp, 0, pts, 0, tmp.length);
} else {
big.setColor(YELLOW);
pts[ptNum] = (int) (graphY + graphH * (freeMemory / totalMemory));
for (int j = graphX + graphW - ptNum, k = 0; k < ptNum; k++, j++) {
if (k != 0) {
if (pts[k] != pts[k - 1]) {
big.drawLine(j - 1, pts[k - 1], j, pts[k]);
} else {
big.fillRect(j, pts[k], 1, 1);
}
}
}
if (ptNum + 2 == pts.length) {
// throw out oldest point
for (int j = 1; j < ptNum; j++) {
pts[j - 1] = pts[j];
}
--ptNum;
} else {
ptNum++;
}
}
g.drawImage(bimg, 0, 0, this);
}
public void start() {
thread = new Thread(this);
thread.setPriority(Thread.MIN_PRIORITY);
thread.setName("MemoryMonitor");
thread.start();
}
public synchronized void stop() {
thread = null;
notify();
}
public void run() {
Thread me = Thread.currentThread();
while (thread == me && !isShowing() || getSize().width == 0) {
try {
thread.sleep(500);
} catch (InterruptedException e) {
return;
}
}
while (thread == me && isShowing()) {
Dimension d = getSize();
if (d.width != w || d.height != h) {
w = d.width;
h = d.height;
bimg = (BufferedImage) createImage(w, h);
big = bimg.createGraphics();
big.setFont(font);
FontMetrics fm = big.getFontMetrics(font);
ascent = (int) fm.getAscent();
descent = (int) fm.getDescent();
}
repaint();
try {
thread.sleep(sleepAmount);
} catch (InterruptedException e) {
break;
}
if (MemoryMonitor.dateStampCB.isSelected()) {
System.out.println(new Date().toString() + " " + usedStr);
}
}
thread = null;
}
}
