private void updatePointerRect() {
if (seq == null || seq.getLength() == 0) {
ptrRect.x = 0;
} else {
ptrRect.x = (int) (getWidth() * seq.getThumbPosition() / seq.getLength() - PTR_WIDTH / 2);
}
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
int ptrPos;
if (seq == null || seq.getLength() == 0) {
ptrPos = 0;
} else {
ptrPos =
(int) (SIDE_PAD + (getWidth() - 2 * SIDE_PAD) * seq.getThumbPosition() / seq.getLength());
}
final int x = SIDE_PAD;
final int y = (PTR_HEIGHT - BAR_HEIGHT) / 2;
int right = getWidth() - SIDE_PAD;
g2.setClip(new RoundRectangle2D.Float(x, y, right - x, BAR_HEIGHT, ROUND, ROUND));
g2.setPaint(new GradientPaint(0, y, Color.DARK_GRAY, 0, y + BAR_HEIGHT, Color.GRAY));
g2.fillRect(x, y, ptrPos - x, BAR_HEIGHT);
g2.setPaint(new GradientPaint(0, y, Color.LIGHT_GRAY, 0, y + BAR_HEIGHT, Color.WHITE));
g2.fillRect(ptrPos, y, right - ptrPos, BAR_HEIGHT);
g2.setClip(null);
g2.setColor(Color.BLACK);
g2.drawRoundRect(x, y, right - x - 1, BAR_HEIGHT, ROUND, ROUND);
if ((mouseHovering || seq.isDragging()) && this.isEnabled()) {
int left = ptrPos - PTR_WIDTH / 2;
final Color PTR_COLOR_1 = Color.WHITE;
final Color PTR_COLOR_2 = Color.LIGHT_GRAY;
g2.setPaint(new GradientPaint(left, 0, PTR_COLOR_1, left + PTR_WIDTH, 0, PTR_COLOR_2));
g2.fillOval(left, 0, PTR_WIDTH, PTR_HEIGHT);
g2.setColor(Color.BLACK);
g2.drawOval(left, 0, PTR_WIDTH - 1, PTR_HEIGHT - 1);
}
}
public PlayControlPanel(
SequencerWrapper seq, String playIconName, String pauseIconName, String stopIconName) {
super(
new TableLayout(
new double[] {4, 0.50, PREFERRED, PREFERRED, 0.50, 4, PREFERRED, 4},
new double[] {4, PREFERRED, 4, PREFERRED, 4}));
this.sequencer = seq;
this.playIcon = new ImageIcon(IconLoader.class.getResource(playIconName + ".png"));
this.pauseIcon = new ImageIcon(IconLoader.class.getResource(pauseIconName + ".png"));
Icon stopIcon = new ImageIcon(IconLoader.class.getResource(stopIconName + ".png"));
songPositionBar = new SongPositionBar(seq);
songPositionLabel = new SongPositionLabel(seq);
playButton = new JButton(playIcon);
playButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
sequencer.setRunning(!sequencer.isRunning());
}
});
stopButton = new JButton(stopIcon);
stopButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
sequencer.reset(false);
}
});
sequencer.addChangeListener(
new SequencerListener() {
public void propertyChanged(SequencerEvent evt) {
updateButtonStates();
}
});
updateButtonStates();
add(songPositionBar, "1, 1, 4, 1");
add(songPositionLabel, "6, 1");
add(playButton, "2, 3");
add(stopButton, "3, 3");
}
private void updateButtonStates() {
playButton.setIcon(sequencer.isRunning() ? pauseIcon : playIcon);
playButton.setEnabled(sequencer.isLoaded());
stopButton.setEnabled(
sequencer.isLoaded() && (sequencer.isRunning() || sequencer.getPosition() != 0));
}