package nodebox.handle;

import nodebox.graphics.GraphicsContext;

import nodebox.graphics.Point;

import nodebox.node.Node;

import nodebox.node.Parameter;

import java.util.Locale;

/**

* Handle for the freehand node.

*/

public class FreehandHandle extends AbstractHandle {

private final String pathParameterName;

private final Parameter parameter;

private boolean newPath = true;

private Point currentPoint;

public FreehandHandle(Node node, String pathParameterName) {

super(node);

this.pathParameterName = pathParameterName;

this.parameter = node.getParameter(pathParameterName);

}

public void draw(GraphicsContext ctx) {

if (currentPoint == null) return;

ctx.nofill();

ctx.stroke(0.5f);

ctx.ellipse(currentPoint.x - 5, currentPoint.y - 5, 10, 10);

}

@Override

public boolean mousePressed(Point pt) {

newPath = true;

return true;

}

@Override

public boolean mouseMoved(Point pt) {

currentPoint = pt;

updateHandle();

return true;

}

@Override

public boolean mouseDragged(Point pt) {

// Note that the freehand handle is not concerned with parsing the actual path.

// All it does is append new points to the string.

// The actual path parsing is done by the freehand node code.

currentPoint = pt;

String pathString = parameter.asString();

if (newPath) {

if (pathString.isEmpty()) {

pathString = " ";

}

pathString += "M ";

newPath = false;

}

// Use US locale, otherwise the code might generate a "," instead of a "." as the floating point.

pathString += String.format(Locale.US, "%.2f %.2f ", pt.getX(), pt.getY());

silentSet(pathParameterName, pathString);

updateHandle();

return true;

}

@Override

public boolean mouseReleased(Point pt) {

stopCombiningEdits();

return true;

}

}