public void mouseWheelMoved(MouseWheelEvent e) {
int notches = e.getWheelRotation();
int sign = 1;
if (notches > 0) {
sign = -1;
}
if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
int numClicks = e.getScrollAmount();
scale = scale + (numClicks * 0.1f) * sign;
if (scale <= 0) scale = 0.1f;
}
TheDisplayPanel.initDisplay();
TheDisplayPanel.repaint();
JScrollBar verticalScrollBar = TheScrollPane.getVerticalScrollBar();
JScrollBar horizScrollBar = TheScrollPane.getHorizontalScrollBar();
// Point pInImage = new
// Point((int)(mouseMovePoint.x+lastScrollValueX),
// (int)(mouseMovePoint.y+lastScrollValueY));
verticalScrollBar.setValue((int) (lastScrollValueY + mouseMovePoint.y));
horizScrollBar.setValue((int) (lastScrollValueX + mouseMovePoint.x));
lastScrollValueX = horizScrollBar.getValue();
lastScrollValueY = verticalScrollBar.getValue();
TheFrame.validate();
TheFrame.repaint();
}
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
Dragging = true;
startPoint = e.getPoint();
JScrollBar verticalScrollBar = TheScrollPane.getVerticalScrollBar();
JScrollBar horizScrollBar = TheScrollPane.getHorizontalScrollBar();
lastScrollValueX = horizScrollBar.getValue();
lastScrollValueY = verticalScrollBar.getValue();
}
public void mouseDragged(MouseEvent e) {
JScrollBar verticalScrollBar = TheScrollPane.getVerticalScrollBar();
JScrollBar horizScrollBar = TheScrollPane.getHorizontalScrollBar();
verticalScrollBar.setValue((int) (lastScrollValueY + startPoint.y - e.getPoint().y));
horizScrollBar.setValue((int) (lastScrollValueX + startPoint.x - e.getPoint().x));
lastScrollValueX = horizScrollBar.getValue();
lastScrollValueY = verticalScrollBar.getValue();
}
