Java Programming Code Examples
Java > Java AWT Code Examples
Paint Shapes and Text of different colors and fonts
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
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
Paint Shapes and Text of different colors and fonts
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class Painter2 extends JFrame {
private int topX, topY, width, fontSize,
height, bottomX, bottomY, shape;
private boolean clear, textOn, filled;
private Color drawingColor;
private String font;
private JTextField text;
private JPanel panel1, panel2, panel3, panel4;
private JRadioButton ovalBox, rectBox, lineBox;
private ButtonGroup shapeGroup;
private JCheckBox fillBox;
private JComboBox colorList, fontList, sizeList;
private JButton clearButton;
private String colorNames[] = { "Black", "Green", "Blue",
"Red", "Cyan" };
private Color colors[] = { Color.black, Color.green, Color.blue,
Color.red, Color.cyan };
private String fontNames[] = { "Serif", "SansSerif", "Monospaced" };
private String sizeNames[] = { "9", "10", "22", "72" };
private int sizes[] = { 9, 10, 22, 72 };
private final int OVAL = 1, LINE = 2, RECT = 3;
private ToolWindow tools;
// Painter2 constructor
public Painter2()
{
super( "Painting Window" );
addMouseListener( new MouseHandler() );
// set defaults for painting
drawingColor = Color.black;
shape = OVAL;
font = "Serif";
fontSize = 9;
setDefaultCloseOperation( EXIT_ON_CLOSE );
setBackground( Color.white );
setSize( 300, 300 );
show();
// create new ToolWindow
tools = new ToolWindow();
} // end constructor
// paint the new window. super is not called so
// that the previous images will not be erased.
public void paint( Graphics g )
{
g.setColor( drawingColor );
// draw text
if ( textOn ) {
g.setFont( new Font( font, Font.PLAIN, fontSize ) );
g.drawString( text.getText(), topX, topY );
textOn = false;
return;
} // end if statement
// set shape's top left coordinates
if ( shape != LINE ) {
topX = Math.min( topX, bottomX );
topY = Math.min( topY, bottomY );
} // end if statement
// draw filled shape
if ( filled && shape != LINE )
switch ( shape ) {
case OVAL:
g.fillOval( topX, topY, width, height );
break;
case RECT:
g.fillRect( topX, topY, width, height );
break;
} // end switch statement
// draw unfilled shapes
else
switch ( shape ) {
case OVAL:
g.drawOval( topX, topY, width, height );
break;
case LINE:
g.drawLine( topX, topY, bottomX, bottomY );
break;
case RECT:
g.drawRect( topX, topY, width, height );
break;
} // ens switch statement
// clear background
if ( clear == true ) {
g.setColor( Color.white );
g.fillRect( 0, 0, getSize().width, getSize().height );
clear = false;
} // end if statement
} // end method paint
// inner class for window containing GUI
private class ToolWindow extends JFrame {
// ToolWindow constructor
public ToolWindow()
{
super( "Tool Window" );
// set up to edit text
text = new JTextField( "Text", 25 );
text.addActionListener(
// anonymous inner class to handle text drawing
new ActionListener () {
public void actionPerformed( ActionEvent event )
{
textOn = true;
repaint();
} // end actionPerformed method
} // end anonymous inner class
); // end call to addActionListener
// set up to choose font
fontList = new JComboBox( fontNames );
fontList.setMaximumRowCount( 3 );
fontList.addItemListener(
// anonymous inner class to select font
new ItemListener() {
// change font
public void itemStateChanged( ItemEvent event )
{
font =
fontNames[ fontList.getSelectedIndex() ];
} // end itemStateChanged method
} // end anonymous inner class
); // end call to addItemListener
// set up to choose font size
sizeList = new JComboBox( sizeNames );
sizeList.setMaximumRowCount( 3 );
sizeList.addItemListener(
// anonymous inner class to select font size
new ItemListener() {
// change font size
public void itemStateChanged( ItemEvent event )
{
fontSize =
sizes[ sizeList.getSelectedIndex() ];
} // end itemStateChanged method
} // end anonymous inner class
); // end call to addItemListener
// set up to choose color
colorList = new JComboBox( colorNames );
colorList.setMaximumRowCount( 3 );
colorList.addItemListener(
// anonymous inner class to select color
new ItemListener() {
// change color
public void itemStateChanged( ItemEvent event )
{
drawingColor =
colors[ colorList.getSelectedIndex() ];
} // end itemStateChanged method
} // end anonymous inner class
); // end call to addItemListener
// set up clear button
clearButton = new JButton( "Clear" );
clearButton.addActionListener(
new ClearButtonHandler() );
// set up to choose filled
fillBox = new JCheckBox( "Filled" );
FillBoxHandler fillHandle = new FillBoxHandler();
fillBox.addItemListener( fillHandle );
// set up to choose shapes
ovalBox = new JRadioButton( "Oval", true );
lineBox = new JRadioButton( "Line", false );
rectBox = new JRadioButton( "Rectangle", false );
RadioButtonHandler handler = new RadioButtonHandler();
ovalBox.addItemListener( handler );
lineBox.addItemListener( handler );
rectBox.addItemListener( handler );
shapeGroup = new ButtonGroup();
shapeGroup.add(ovalBox);
shapeGroup.add(lineBox);
shapeGroup.add(rectBox);
// set up GUI layout
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
panel1.setLayout( new GridLayout( 1, 4 ) );
panel2.setLayout( new GridLayout( 1, 3 ) );
panel3.setLayout( new FlowLayout() );
panel4.setLayout( new FlowLayout() );
panel1.add( ovalBox );
panel1.add( lineBox );
panel1.add( rectBox );
panel1.add( fillBox );
panel2.add( new JScrollPane( colorList ) );
panel2.add( new JScrollPane( fontList ) );
panel2.add( new JScrollPane( sizeList ) );
panel3.add( text );
panel4.add( clearButton );
Container container = getContentPane();
container.setLayout( new FlowLayout() );
container.add( panel1 );
container.add( panel2 );
container.add( panel3 );
container.add( panel4 );
setDefaultCloseOperation( EXIT_ON_CLOSE );
setSize( 350, 175 );
setLocation( 300, 0 );
setVisible( true );
} // end ToolWindow constructor
} // end inner class ToolWindow
// set coordinate and dimension values
private class MouseHandler extends MouseAdapter {
public void mousePressed( MouseEvent event )
{
topX = event.getX();
topY = event.getY();
} // end mousePressed method
public void mouseReleased( MouseEvent event )
{
bottomX = event.getX();
bottomY = event.getY();
width = Math.abs( topX - bottomX );
height = Math.abs( topY - bottomY );
repaint();
} // end mouseReleased method
} // end inner class MouseHandler
// clear background
private class ClearButtonHandler implements ActionListener {
public void actionPerformed( ActionEvent event )
{
clear = true;
repaint();
} // end actionPerformed method
} // end inner class ClearButtonHandler
// determine which type of shape to draw
private class RadioButtonHandler implements ItemListener {
public void itemStateChanged( ItemEvent event )
{
if ( event.getSource() == ovalBox )
shape = OVAL;
else if ( event.getSource() == lineBox )
shape = LINE;
else if ( event.getSource() == rectBox )
shape = RECT;
} // end itemStateChanged method
} // end inner class RadioButtonHandler
// determine if shape should be filled
private class FillBoxHandler implements ItemListener {
public void itemStateChanged( ItemEvent event )
{
if ( event.getStateChange() == ItemEvent.SELECTED )
filled = true;
else
filled = false;
} // end ItemStateChanged method
} // end inner class FillBoxHandler
// execute application
public static void main( String args[] )
{
Painter2 application = new Painter2();
application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
} // end main method
} // end class Painter2