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/**
* Copyright (c) 2011 Bernhard Pauler, Tim Molderez.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the 3-Clause BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/BSD-3-Clause
*/
package net.java.balloontip.styles;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.RenderingHints;
import java.awt.geom.GeneralPath;
/**
* A minimal anti-aliased balloon tip style with no border and rounded corners
* @author Tim Molderez
*/
public class MinimalBalloonStyle extends BalloonTipStyle {
private final int arcWidth;
private final Color fillColor;
/**
* Constructor
* @param fillColor fill color (transparent colors are allowed)
* @param arcWidth the radius of a rounded corner
*/
public MinimalBalloonStyle(Color fillColor, int arcWidth) {
super();
this.fillColor = fillColor;
this.arcWidth = arcWidth;
}
public Insets getBorderInsets(Component c) {
if (flipY) {
return new Insets(verticalOffset+arcWidth, arcWidth, arcWidth, arcWidth);
}
return new Insets(arcWidth, arcWidth, arcWidth+verticalOffset, arcWidth);
}
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
int yTop; // Y-coordinate of the top side of the balloon
int yBottom; // Y-coordinate of the bottom side of the balloon
if (flipY) {
yTop = y + verticalOffset;
yBottom = y + height;
} else {
yTop = y;
yBottom = y + height - verticalOffset;
}
// Draw the outline of the balloon
GeneralPath outline = new GeneralPath();
outline.moveTo(x + arcWidth, yTop);
// Top left corner
outline.quadTo(x, yTop, x, yTop + arcWidth);
// Left side
outline.lineTo(x, yBottom - arcWidth);
// Bottom left corner
outline.quadTo(x, yBottom, x + arcWidth, yBottom);
// Bottom side
if (!flipX && !flipY) {
outline.lineTo(x + horizontalOffset - verticalOffset, yBottom);
outline.lineTo(x + horizontalOffset, yBottom + verticalOffset);
outline.lineTo(x + horizontalOffset + verticalOffset, yBottom);
} else if (flipX && !flipY) {
outline.lineTo(x + width - horizontalOffset - verticalOffset, yBottom);
outline.lineTo(x + width - horizontalOffset, yBottom + verticalOffset);
outline.lineTo(x + width - horizontalOffset + verticalOffset, yBottom);
}
outline.lineTo(x + width - arcWidth, yBottom);
// Bottom right corner
outline.quadTo(x + width, yBottom, x + width, yBottom - arcWidth);
// Right side
outline.lineTo(x + width, yTop + arcWidth);
// Top right corner
outline.quadTo(x + width, yTop, x + width - arcWidth, yTop);
// Top side
if (!flipX && flipY) {
outline.lineTo(x + horizontalOffset + verticalOffset, yTop);
outline.lineTo(x + horizontalOffset, yTop - verticalOffset);
outline.lineTo(x + horizontalOffset - verticalOffset, yTop);
} else if (flipX && flipY) {
outline.lineTo(x + width - horizontalOffset + verticalOffset, yTop);
outline.lineTo(x + width - horizontalOffset, yTop - verticalOffset);
outline.lineTo(x + width - horizontalOffset - verticalOffset, yTop);
}
outline.closePath();
g2d.setPaint(fillColor);
g2d.fill(outline);
}
public int getMinimalHorizontalOffset() {
return arcWidth + verticalOffset;
}
public boolean isBorderOpaque() {
return fillColor.getAlpha()==255;
}
}
