/usr/share/doc/openjdk-11-jre-headless/demo/applets/BarChart/BarChart.java is in openjdk-11-demo 10.0.1+10-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 | /*
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This source code is provided to illustrate the usage of a given feature
* or technique and has been deliberately simplified. Additional steps
* required for a production-quality application, such as security checks,
* input validation and proper error handling, might not be present in
* this sample code.
*/
import java.awt.*;
/**
* A simple bar chart demo
* @author Sami Shaio
* @modified 06/21/00 Daniel Peek : refactored, comments
*/
@SuppressWarnings("serial")
public class BarChart extends java.applet.Applet {
private static final int VERTICAL = 0;
private static final int HORIZONTAL = 1;
private static final int SOLID = 0;
private static final int STRIPED = 1;
private int orientation;
private String title;
private Font font;
private FontMetrics metrics;
private int columns;
private int values[];
private Color colors[];
private String labels[];
private int styles[];
private int scale = 10;
private int maxLabelWidth = 0;
private int barSpacing = 10;
private int maxValue = 0;
@Override
public void init() {
getSettings();
values = new int[columns];
labels = new String[columns];
styles = new int[columns];
colors = new Color[columns];
for (int i = 0; i < columns; i++) {
parseValue(i);
parseLabel(i);
parseStyle(i);
parseColor(i);
}
}
private void getSettings() {
font = new java.awt.Font("Monospaced", Font.BOLD, 12);
metrics = getFontMetrics(font);
title = getParameter("title");
if (title == null) {
title = "Chart";
}
String temp = getParameter("columns");
if (temp == null) {
columns = 5;
} else {
columns = Integer.parseInt(temp);
}
temp = getParameter("scale");
if (temp == null) {
scale = 10;
} else {
scale = Integer.parseInt(temp);
}
temp = getParameter("orientation");
if (temp == null) {
orientation = VERTICAL;
} else if (temp.equalsIgnoreCase("horizontal")) {
orientation = HORIZONTAL;
} else {
orientation = VERTICAL;
}
}
private void parseValue(int i) {
String temp = getParameter("C" + (i + 1));
try {
values[i] = Integer.parseInt(temp);
} catch (NumberFormatException e) {
values[i] = 0;
} catch (NullPointerException e) {
values[i] = 0;
}
maxValue = Math.max(maxValue, values[i]);
}
private void parseLabel(int i) {
String temp = getParameter("C" + (i + 1) + "_label");
if (temp == null) {
labels[i] = "";
} else {
labels[i] = temp;
}
maxLabelWidth = Math.max(metrics.stringWidth(labels[i]), maxLabelWidth);
}
private void parseStyle(int i) {
String temp = getParameter("C" + (i + 1) + "_style");
if (temp == null || temp.equalsIgnoreCase("solid")) {
styles[i] = SOLID;
} else if (temp.equalsIgnoreCase("striped")) {
styles[i] = STRIPED;
} else {
styles[i] = SOLID;
}
}
private void parseColor(int i) {
String temp = getParameter("C" + (i + 1) + "_color");
if (temp != null) {
temp = temp.toLowerCase();
if (temp.equals("red")) {
colors[i] = Color.red;
} else if (temp.equals("green")) {
colors[i] = Color.green;
} else if (temp.equals("blue")) {
colors[i] = Color.blue;
} else if (temp.equals("pink")) {
colors[i] = Color.pink;
} else if (temp.equals("orange")) {
colors[i] = Color.orange;
} else if (temp.equals("magenta")) {
colors[i] = Color.magenta;
} else if (temp.equals("cyan")) {
colors[i] = Color.cyan;
} else if (temp.equals("white")) {
colors[i] = Color.white;
} else if (temp.equals("yellow")) {
colors[i] = Color.yellow;
} else if (temp.equals("gray")) {
colors[i] = Color.gray;
} else if (temp.equals("darkgray")) {
colors[i] = Color.darkGray;
} else {
colors[i] = Color.gray;
}
} else {
colors[i] = Color.gray;
}
}
@Override
public void paint(Graphics g) {
// draw the title centered at the bottom of the bar graph
g.setColor(Color.black);
g.setFont(font);
g.drawRect(0, 0, getSize().width - 1, getSize().height - 1);
int titleWidth = metrics.stringWidth(title);
int cx = Math.max((getSize().width - titleWidth) / 2, 0);
int cy = getSize().height - metrics.getDescent();
g.drawString(title, cx, cy);
// draw the bars and their titles
if (orientation == HORIZONTAL) {
paintHorizontal(g);
} else { // VERTICAL
paintVertical(g);
}
}
private void paintHorizontal(Graphics g) {
// x and y coordinates to draw/write to
int cx, cy;
int barHeight = metrics.getHeight();
for (int i = 0; i < columns; i++) {
// set the X coordinate for this bar and label and center it
int widthOfItems = maxLabelWidth + 3 + (maxValue * scale) + 5
+ metrics.stringWidth(Integer.toString(maxValue));
cx = Math.max((getSize().width - widthOfItems) / 2, 0);
// set the Y coordinate for this bar and label
cy = getSize().height - metrics.getDescent() - metrics.getHeight()
- barSpacing
- ((columns - i - 1) * (barSpacing + barHeight));
// draw the label
g.setColor(Color.black);
g.drawString(labels[i], cx, cy);
cx += maxLabelWidth + 3;
// draw the shadow
g.fillRect(cx + 4, cy - barHeight + 4,
(values[i] * scale), barHeight);
// draw the bar
g.setColor(colors[i]);
if (styles[i] == STRIPED) {
for (int k = 0; k <= values[i] * scale; k += 2) {
g.drawLine(cx + k, cy - barHeight, cx + k, cy);
}
} else { // SOLID
g.fillRect(cx, cy - barHeight,
(values[i] * scale) + 1, barHeight + 1);
}
cx += (values[i] * scale) + 4;
// draw the value at the end of the bar
g.setColor(g.getColor().darker());
g.drawString(Integer.toString(values[i]), cx, cy);
}
}
private void paintVertical(Graphics g) {
int barWidth = maxLabelWidth;
for (int i = 0; i < columns; i++) {
// X coordinate for this label and bar (centered)
int widthOfItems = (barWidth + barSpacing) * columns - barSpacing;
int cx = Math.max((getSize().width - widthOfItems) / 2, 0);
cx += (maxLabelWidth + barSpacing) * i;
// Y coordinate for this label and bar
int cy = getSize().height - metrics.getHeight()
- metrics.getDescent() - 4;
// draw the label
g.setColor(Color.black);
g.drawString(labels[i], cx, cy);
cy -= metrics.getHeight() - 3;
// draw the shadow
g.fillRect(cx + 4, cy - (values[i] * scale) - 4,
barWidth, (values[i] * scale));
// draw the bar
g.setColor(colors[i]);
if (styles[i] == STRIPED) {
for (int k = 0; k <= values[i] * scale; k += 2) {
g.drawLine(cx, cy - k,
cx + barWidth, cy - k);
}
} else {
g.fillRect(cx, cy - (values[i] * scale),
barWidth + 1, (values[i] * scale) + 1);
}
cy -= (values[i] * scale) + 5;
// draw the value on top of the bar
g.setColor(g.getColor().darker());
g.drawString(Integer.toString(values[i]), cx, cy);
}
}
@Override
public String getAppletInfo() {
return "Title: Bar Chart \n"
+ "Author: Sami Shaio \n"
+ "A simple bar chart demo.";
}
@Override
public String[][] getParameterInfo() {
String[][] info = {
{ "title", "string", "The title of bar graph. Default is 'Chart'" },
{ "scale", "int", "The scale of the bar graph. Default is 10." },
{ "columns", "int", "The number of columns/rows. Default is 5." },
{ "orientation", "{VERTICAL, HORIZONTAL}",
"The orienation of the bar graph. Default is VERTICAL." },
{ "c#", "int", "Subsitute a number for #. "
+ "The value/size of bar #. Default is 0." },
{ "c#_label", "string", "The label for bar #. "
+ "Default is an empty label." },
{ "c#_style", "{SOLID, STRIPED}", "The style of bar #. "
+ "Default is SOLID." },
{ "c#_color", "{RED, GREEN, BLUE, PINK, ORANGE, MAGENTA, CYAN, "
+ "WHITE, YELLOW, GRAY, DARKGRAY}",
"The color of bar #. Default is GRAY." }
};
return info;
}
}
|