package edu.mit.blocks.codeblockutil;
import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Transparency;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.ConvolveOp;
import java.awt.image.Kernel;
public class CRadioactiveButton extends CButton {
private static final long serialVersionUID = 328149080258L;
//To get the shadow effect the text must be displayed multiple times at
//multiple locations. x represents the center, white label.
// o is color values (0,0,0,0.5f) and b is black.
// o o
// o x b o
// o b o
// o
//offsetArrays representing the translation movement needed to get from
// the center location to a specific offset location given in {{x,y},{x,y}....}
//..........................................grey points.............................................black points
private final int[][] shadowPositionArray = {{0, -1}, {1, -1}, {-1, 0}, {2, 0}, {-1, 1}, {1, 1}, {0, 2}, {1, 0}, {0, 1}};
private final float[] shadowColorArray = {0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0, 0};
private double offsetSize = 1;
public CRadioactiveButton(Color buttonColor, Color selectedColor, String text) {
super(buttonColor, selectedColor, text);
}
@Override
public void paint(Graphics g) {
// Set up graphics and buffer
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
BufferedImage buffer = GraphicsManager.gc.createCompatibleImage(this.getWidth(), this.getHeight(), Transparency.TRANSLUCENT);
Graphics2D gb = buffer.createGraphics();
gb.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// Set up first layer
int buttonHeight = this.getHeight() - INSET * 2;
int buttonWidth = this.getWidth() - INSET * 2;
int arc = buttonHeight;
if (this.pressed || this.selected) {
g2.setPaint(new GradientPaint(0, -buttonHeight, Color.darkGray, 0, buttonHeight, buttonColor, false));
g2.fillRoundRect(INSET, INSET, buttonWidth, buttonHeight, arc, arc);
g2.setColor(Color.darkGray);
g2.drawRoundRect(INSET, INSET, buttonWidth, buttonHeight, arc, arc);
} else {
//paint highlightlayer
if (this.focus) {
gb.setColor(Color.yellow);
gb.setStroke(new BasicStroke(3));
gb.drawRoundRect(INSET, INSET, buttonWidth, buttonHeight, arc, arc);
gb.setStroke(new BasicStroke(1));
}
// Paint the first layer
gb.setColor(buttonColor.darker());
gb.fillRoundRect(INSET, INSET, buttonWidth, buttonHeight, arc, arc);
gb.setColor(Color.darkGray);
gb.drawRoundRect(INSET, INSET, buttonWidth, buttonHeight, arc, arc);
// set up paint data fields for second layer
int highlightHeight = buttonHeight * 2 / 3;
int highlightWidth = buttonWidth;
int highlightArc = highlightHeight;
// Paint the second layer
gb.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, .8f));
gb.setColor(buttonColor);
gb.setClip(new RoundRectangle2D.Float(INSET, INSET, highlightWidth, highlightHeight, highlightArc, highlightArc));
gb.fillRoundRect(INSET, INSET, buttonWidth, buttonHeight, arc, arc);
// Blur
ConvolveOp blurOp = new ConvolveOp(new Kernel(3, 3, BLUR));
BufferedImage blurredImage = blurOp.filter(buffer, null);
// Draw button
g2.drawImage(blurredImage, 1, 1, null);
}
// Draw the text (if any)
String text = this.getText();
if (text != null && buttonHeight > 4) {
//Font font = g2.getFont().deriveFont((float)(((float)this.getHeight()) * .6));
Font font = g2.getFont().deriveFont((float) (this.getHeight() - INSET * 2 - 2) * .7f);
g2.setFont(font);
FontMetrics metrics = g2.getFontMetrics();
Rectangle2D textBounds = metrics.getStringBounds(this.getText(), g2);
float x = (float) ((this.getWidth() / 2) - (textBounds.getWidth() / 2));
float y = (float) ((this.getHeight() / 2) + (textBounds.getHeight() / 2)) - metrics.getDescent();
g.setColor(Color.black);
for (int i = 0; i < shadowPositionArray.length; i++) {
int dx = shadowPositionArray[i][0];
int dy = shadowPositionArray[i][1];
g2.setColor(new Color(0, 0, 0, shadowColorArray[i]));
g2.drawString(text, x + (int) ((dx) * offsetSize), y + (int) ((dy) * offsetSize));
}
g2.setColor(Color.white);
g2.drawString(text, x, y);
}
}
}