/**
* Zooms in and out the image if the <code>Shift</code> key is down, pans if the <code>Alt</code>
* key is down. Selects a new z-section and time-point otherwise.
*
* @see MouseMotionListener#mouseDragged(MouseEvent)
*/
public void mouseDragged(MouseEvent e) {
Point p = e.getPoint();
if (handleKeyDown) {
if (e.isShiftDown()) {
if (model.isBigImage()) {
pan(p, false);
return;
}
if (p.y < pressedPoint.y) model.zoom(true);
else if (p.y > pressedPoint.y) model.zoom(false);
pressedPoint = p;
return;
} else if (e.isAltDown()) {
pan(p, false);
return;
}
}
if (model.isBigImage()) { // panning
pan(p, false);
return;
}
int maxZ = model.getMaxZ();
int maxT = model.getMaxT();
if (maxZ <= 0 && maxT <= 0) return;
int pressedZ = -1;
int pressedT = -1;
pressedZ = (p.y * maxZ) / area.height;
if (pressedZ < 0) return;
pressedZ = maxZ - pressedZ;
if (pressedZ > maxZ) pressedZ = -1;
pressedT = (p.x * maxT) / area.width;
if (pressedT < 0) return;
if (pressedT > maxT) return;
model.setSelectedXYPlane(pressedZ, pressedT);
if (canvas instanceof BrowserBICanvas)
((BrowserBICanvas) canvas).setPaintedString(pressedZ, pressedT);
}
/**
* Determines the value of the z-section.
*
* @see MouseWheelListener#mouseWheelMoved(MouseWheelEvent)
*/
public void mouseWheelMoved(MouseWheelEvent e) {
if (model.isBigImage()) return;
if (e.isAltDown() || e.isShiftDown() || e.isControlDown()) { // zooming
if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
int v = e.getWheelRotation();
model.zoom(v < 0); // zoom in and out.
}
return;
}
// change the z-section.
int maxZ = model.getMaxZ();
int maxT = model.getMaxT();
if (maxZ <= 0 && maxT <= 0) return;
boolean up = true;
if (e.getWheelRotation() > 0) up = false;
if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
int v = model.getDefaultZ() - e.getWheelRotation();
if (up) {
if (v <= maxZ) {
model.setSelectedXYPlane(v, -1);
if (canvas instanceof BrowserBICanvas)
((BrowserBICanvas) canvas).setPaintedString(v, model.getDefaultT());
} else {
if (canvas instanceof BrowserBICanvas)
((BrowserBICanvas) canvas).setPaintedString(-1, -1);
}
} else { // moving down
if (v >= 0) {
model.setSelectedXYPlane(v, -1);
if (canvas instanceof BrowserBICanvas)
((BrowserBICanvas) canvas).setPaintedString(v, model.getDefaultT());
} else {
if (canvas instanceof BrowserBICanvas)
((BrowserBICanvas) canvas).setPaintedString(-1, -1);
}
}
}
}