private void updateMouse(Canvas canvas, int mx, int my, int mods) {
if (active) {
boolean shift = (mods & MouseEvent.SHIFT_DOWN_MASK) != 0;
Location newEnd;
if (shift) {
newEnd = LineUtil.snapTo8Cardinals(mouseStart, mx, my);
} else {
newEnd = Location.create(mx, my);
}
if ((mods & InputEvent.CTRL_DOWN_MASK) != 0) {
int x = newEnd.getX();
int y = newEnd.getY();
x = canvas.snapX(x);
y = canvas.snapY(y);
newEnd = Location.create(x, y);
}
if (!newEnd.equals(mouseEnd)) {
mouseEnd = newEnd;
repaintArea(canvas);
}
}
lastMouseX = mx;
lastMouseY = my;
}
@Override
public void mousePressed(Canvas canvas, MouseEvent e) {
int x = e.getX();
int y = e.getY();
int mods = e.getModifiersEx();
if ((mods & InputEvent.CTRL_DOWN_MASK) != 0) {
x = canvas.snapX(x);
y = canvas.snapY(y);
}
Location loc = Location.create(x, y);
mouseStart = loc;
mouseEnd = loc;
lastMouseX = loc.getX();
lastMouseY = loc.getY();
active = canvas.getModel() != null;
repaintArea(canvas);
}
@Override
protected void paintForeground(Graphics g) {
double zoom = grid.getZoomFactor();
Graphics gScaled = g.create();
if (zoom != 1.0 && zoom != 0.0 && gScaled instanceof Graphics2D) {
((Graphics2D) gScaled).scale(zoom, zoom);
}
super.paintForeground(gScaled);
gScaled.dispose();
}
@Override
public void repaintCanvasCoords(int x, int y, int width, int height) {
double zoom = grid.getZoomFactor();
if (zoom != 1.0) {
x = (int) (x * zoom - 1);
y = (int) (y * zoom - 1);
width = (int) (width * zoom + 4);
height = (int) (height * zoom + 4);
}
super.repaintCanvasCoords(x, y, width, height);
}
@Override
public void setModel(CanvasModel value, ActionDispatcher dispatcher) {
CanvasModel oldModel = super.getModel();
if (oldModel != null) {
oldModel.removeCanvasModelListener(listener);
}
super.setModel(value, dispatcher);
if (value != null) {
value.addCanvasModelListener(listener);
}
}
@Override
public void mouseReleased(Canvas canvas, MouseEvent e) {
if (active) {
updateMouse(canvas, e.getX(), e.getY(), e.getModifiersEx());
Location start = mouseStart;
Location end = mouseEnd;
CanvasObject add = null;
if (!start.equals(end)) {
active = false;
CanvasModel model = canvas.getModel();
Location[] ends = {start, end};
List<Location> locs = UnmodifiableList.create(ends);
add = attrs.applyTo(new Poly(false, locs));
add.setValue(DrawAttr.PAINT_TYPE, DrawAttr.PAINT_STROKE);
canvas.doAction(new ModelAddAction(model, add));
repaintArea(canvas);
}
canvas.toolGestureComplete(this, add);
}
}
@Override
public void setTool(CanvasTool value) {
hidePopup();
super.setTool(value);
}
@Override
protected void processMouseMotionEvent(MouseEvent e) {
repairEvent(e, grid.getZoomFactor());
super.processMouseMotionEvent(e);
}
@Override
protected void paintBackground(Graphics g) {
super.paintBackground(g);
grid.paintGrid(g);
}
private void repaintArea(Canvas canvas) {
canvas.repaint();
}